End face tooth connection structure and vehicle

Abstract

The utility model discloses a kind of end face tooth connection structure and vehicle, including being set to the first flange of first to be connected piece circumferential, first flange is equipped with the distribution of several first connecting parts along its circumferential;First end face tooth is set to the axial one end of first to be connected piece;Second flange is set to the second to be connected piece circumferential, second flange is equipped with the distribution of several second connecting parts along its circumferential, second connecting part and first connecting part one-to-one corresponding connection;And second end face tooth is set to the axial one end of second to be connected piece, second end face tooth is suitable for with first end face tooth meshing;With one group of first connecting part and second connecting part as positioning part, in circumferential direction, positioning part and the first end face tooth tooth groove have first included angle, and with the second end face tooth addendum have second included angle equal with first included angle.The utility model can realize the effective positioning of end face tooth in circumferential direction, guarantee the accurate meshing of end face tooth between first to be connected piece and second to be connected piece.

Description

Technical Field

[0001] This utility model relates to the field of transmission connection structure technology, specifically to an end face tooth connection structure and a vehicle. Background Technology

[0002] Traditional transmission structures typically use bolts or keyways to connect the connection surfaces to transmit torque. However, these are prone to deformation and failure under high torque. Therefore, existing transmission structures are increasingly employing end-face gear connections to meet the ever-increasing torque demands. Taking the transmission connection between the wheel hub bearing and the drive shaft in automobiles as an example, because the motor torque of new energy vehicles is large and the response is fast during start-up, traditional internal and external spline bearings cannot withstand the significant impact, easily leading to abnormal noises during start-up. Therefore, the industry has begun to adopt end-face gear hub bearings that can withstand greater impacts.

[0003] However, during the assembly process of the end face gear hub bearing and the drive shaft, due to the obstruction of the view by the sealing ring of the connecting surface, it is impossible to accurately determine whether the drive shaft and the end face gear hub bearing are properly assembled. This can easily lead to incorrect assembly of the top teeth, that is, the top teeth of the end face of the hub bearing and the top teeth of the end face of the drive shaft outer ball cage are in contact but are not properly meshed, resulting in the motor torque not being transmitted to the wheel end. Utility Model Content

[0004] In view of the above problems, the present invention provides an end face tooth connection structure and vehicle, which can effectively position the end face teeth in the circumferential direction and ensure accurate meshing of the end face teeth between the parts to be connected.

[0005] According to one aspect of the present invention, an end face tooth connection structure is provided, comprising: a first flange disposed circumferentially on a first member to be connected, the first flange having a plurality of first connecting portions distributed circumferentially thereon; a first end face tooth disposed at one axial end of the first member to be connected; a second flange disposed circumferentially on a second member to be connected, the second flange having a plurality of second connecting portions distributed circumferentially thereon, the second connecting portions being connected one-to-one with the first connecting portions; and a second end face tooth disposed at one axial end of the second member to be connected, the second end face tooth being adapted to mesh with the first end face tooth; wherein a set of correspondingly connected first connecting portions and second connecting portions constitutes a positioning portion, the positioning portion having a first included angle with one tooth groove of the first end face tooth in the circumferential direction, and the positioning portion having a second included angle with one tooth tip of the second end face tooth in the circumferential direction, the second included angle being equal to the first included angle.

[0006] In an exemplary embodiment of this utility model, the outer circumferential edge of the first component to be connected is provided with a first connecting key, and the first connecting key and one of the tooth grooves of the first end face tooth are aligned with the axis in the circumferential direction; the inner circumferential edge of the first flange is provided with a first keyway corresponding to the first connecting key, and the first keyway is connected to the first connecting key; the positioning part and the first keyway have a third included angle in the circumferential direction, the difference between the third included angle and the first included angle is a1, and the included angle between two adjacent tooth grooves of the first end face tooth in the circumferential direction is b1, and the two satisfy the following relationship: a1 / b1=n, where n is a natural number.

[0007] In an exemplary embodiment of this utility model, the outer circumferential edge of the second component to be connected is provided with a second connecting key, and the second connecting key and one of the tooth tips of the second end face tooth are aligned with the axis in the circumferential direction; the inner circumferential edge of the second flange is provided with a second keyway corresponding to the second connecting key, and the second keyway is connected to the second connecting key; the positioning part and the second keyway have a fourth included angle in the circumferential direction, the difference between the fourth included angle and the second included angle is a2, and the included angle between two adjacent tooth tips of the second end face tooth in the circumferential direction is b2, and the two satisfy the following relationship: a2 / b2=n, where n is a natural number.

[0008] In an exemplary embodiment of this utility model, the fourth included angle is equal to the third included angle.

[0009] In an exemplary embodiment of the present invention, the first keyway is disposed near the positioning part in the circumferential direction, and the second keyway is disposed near the positioning part in the circumferential direction.

[0010] In an exemplary embodiment of the present invention, the included angle between two adjacent first connecting portions in the circumferential direction is less than or equal to 180 degrees.

[0011] In an exemplary embodiment of the present invention, a plurality of first connecting portions are arranged symmetrically along the circumferential direction.

[0012] In an exemplary embodiment of the present invention, the first connecting part includes a connector and a first mounting hole, and the second connecting part includes a second mounting hole. The connector passes through the first mounting hole and the second mounting hole, and the first connecting part and the second connecting part are fixedly connected to each other.

[0013] In an exemplary embodiment of the present invention, the inner circumferential edge of the first flange is provided with a plurality of first welding notches, which are evenly distributed along the circumferential direction; the inner circumferential edge of the second flange is provided with a plurality of second welding notches, which are evenly distributed along the circumferential direction.

[0014] According to a second aspect of the present invention, a vehicle is provided, including the above-described end face tooth connection structure; wherein the first component to be connected is an outer ball cage of a drive shaft, and the second component to be connected is a wheel hub bearing.

[0015] This invention provides a first flange and a second flange in the circumferential direction of the first and second parts to be connected, respectively. By connecting the corresponding first and second connecting parts on the first and second flanges, the first and second parts to be connected can be fixed in the circumferential direction, resulting in more balanced force distribution and the ability to withstand greater torque transmission, making it suitable for complex working conditions such as high torque. At the same time, by using one set of the first and second connecting parts as positioning parts, and designing the position of the positioning parts in the circumferential direction to have an equal angle with the tooth groove of the first end face tooth and the tooth tip of the second end face tooth, since the first and second connecting parts belonging to the positioning parts correspond to each other in the axial direction, the tooth groove of the first end face tooth and the tooth tip of the second end face tooth will also correspond to each other in the axial direction, thereby achieving effective positioning of the end face teeth in the circumferential direction and ensuring accurate meshing of the end face teeth between the first and second parts to be connected.

[0016] The above description is merely an overview of the technical solutions of the present utility model embodiments. In order to better understand the technical means of the present utility model embodiments and to implement them in accordance with the contents of the specification, and to make the above and other objects, features and advantages of the present utility model embodiments more obvious and understandable, specific embodiments of the present utility model are described below. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0018] Figure 1 A schematic diagram of the end face tooth connection structure of this embodiment is shown;

[0019] Figure 2 A cross-sectional view of the end face tooth connection structure of this embodiment is shown;

[0020] Figure 3 A schematic diagram of the structure of the first component to be connected in this embodiment is shown;

[0021] Figure 4 A schematic diagram of the end face of the first component to be connected in this embodiment is shown;

[0022] Figure 5 A schematic diagram of the structure of the second component to be connected in this embodiment is shown;

[0023] Figure 6A schematic diagram of the end face of the second component to be connected in this embodiment is shown.

[0024] Explanation of icon numbers:

[0025] 1-First component to be connected, 11-First end face tooth, 12-First flange, 121-First connecting part, 1211-First mounting hole, 1212-Connecting component, 122-First keyway, 123-First welding notch, 13-First connecting key.

[0026] 2-Second component to be connected, 21-Second end face tooth, 22-Second flange, 221-Second connecting part, 2211-Second mounting hole, 222-Second keyway, 223-Second welding notch, 23-Second connecting key.

[0027] 3-Positioning part, 31-First connecting part of the positioning part, 32-Second connecting part of the positioning part

[0028] x-axis, α-first included angle, β-second included angle, γ-third included angle, δ-fourth included angle.

[0029] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0030] Exemplary embodiments will now be described more fully with reference to the accompanying drawings. However, these exemplary embodiments can be implemented in many forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided to make the present invention more comprehensive and complete, and to fully convey the concept of the exemplary embodiments to those skilled in the art.

[0031] Furthermore, the described features, structures, or characteristics can be combined in any suitable manner in one or more embodiments. Numerous specific details are provided in the following description to give a full understanding of embodiments of the present invention. However, those skilled in the art will recognize that the technical solutions of the present invention can be practiced without one or more of the specific details, or other methods, components, apparatuses, steps, etc., may be employed. In other instances, well-known methods, apparatuses, implementations, or operations are not shown or described in detail to avoid obscuring various aspects of the present invention.

[0032] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0033] Furthermore, in this embodiment of the present invention, the first and second components to be connected can rotate around the same central axis after being connected to each other to achieve torque transmission. The first and second components to be connected have the same axis and axial direction. The circumferential direction mentioned in this embodiment is defined with the central axis as the center. The orientations or positional relationships indicated by "front," "rear," "left," "right," "up," and "down" mentioned in this embodiment are based on the orientations or positional relationships shown in the accompanying drawings. The terms "inner" and "outer" mentioned in this embodiment are defined based on the outline of the corresponding component. It is understood that the above-mentioned terms indicating orientations or positional relationships are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or component 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 invention.

[0034] It is understood that the end-face tooth connection structure provided in this application embodiment is applied to two components to be connected using end-face tooth connection, such as a wheel hub bearing and a drive shaft outer ball cage using end-face tooth connection. In related technologies, two components to be connected using end-face tooth connection each have a number of teeth (i.e., end-face teeth) that are rotationally symmetrical about the axial x-axis on their opposite end faces. The two components to be connected are installed and positioned by the meshing of the tooth tips / grooves of one end tooth with the tooth grooves / tooth tips of the other end tooth, and can rotate about the same axis of rotation to achieve torque transmission.

[0035] like Figures 1 to 6 As shown, this embodiment provides an end face tooth connection structure, including: a first end face tooth 11 disposed at one axial end of a first member to be connected 1; a first flange 12 disposed circumferentially on the first member to be connected 1, the first flange 12 having a plurality of first connecting portions 121 distributed circumferentially thereon; a second end face tooth 21 disposed at one axial end of a second member to be connected 2, the second end face tooth 21 being adapted to mesh with the first end face tooth 11; and a second flange 22 disposed circumferentially on the second member to be connected 2, the second flange 22 having a plurality of second connecting portions 221 distributed circumferentially thereon, the second connecting portions 221 being connected one-to-one with the first connecting portions 121 along the axial x, so that the first member to be connected 1 and the second member to be connected 2 can be connected and fixed circumferentially; taking one set of correspondingly connected first connecting portions 121 and second connecting portions 221 as a positioning part 3, the positioning part 3 (specifically...) Figure 4 The first connecting part 31 of the positioning part and one of the tooth grooves of the first end face tooth 11 have a first included angle α in the circumferential direction, and the positioning part 3 (specifically...) Figure 6The second connecting part 32 of the positioning part has a second included angle β in the circumferential direction with one of the tooth tips of the second end face tooth 21. The second included angle β is equal to the first included angle α. Since the positioning part 3 has an equal included angle with the tooth groove of the first end face tooth 11 and the tooth tip of the second end face tooth 21 in the circumferential direction, and the first connecting part 31 and the second connecting part 32 of the positioning part, which belong to the positioning part 3, correspond to each other in the axial x direction, the tooth groove of the first end face tooth 11 and the tooth tip of the second end face tooth 21 will also correspond to each other in the axial x direction, thereby realizing the effective positioning of the end face tooth in the circumferential direction. In this way, when the first connecting part 31 and the second connecting part 32 of the positioning part are connected in a corresponding manner, it can be ensured that the end face teeth of the second part to be connected 2 and the first part to be connected 1 are accurately meshed.

[0036] It is understandable that, such as Figure 4 As shown, the positional relationship between the positioning part 3 and the tooth groove / tooth tip of the first end face tooth 11 in the circumferential direction can be determined by showing the line connecting the center of the positioning part 3 to the axis and the line connecting the center of the tooth groove / tooth tip of the first end face tooth 11 to the axis (central axis) on a projection plane perpendicular to the axial direction x. In this regard, the first connecting part 31 and the second connecting part 32 of the positioning part correspond to each other in the axial direction x. The line connecting the center of the first connecting part 31 to the axis and the line connecting the center of the second connecting part 32 to the axis can both be used as the line connecting the center of the positioning part 3 to the axis. In this case, the included angle between the line connecting the center of the positioning part 3 to the axis and the line connecting the center of the tooth groove / tooth tip of the first end face tooth 11 to the axis is the first included angle α. Similarly, as... Figure 6 As shown, the positional relationship between the positioning part 3 and the tooth tip / groove of the second end face tooth 21 in the circumferential direction can also be determined by showing the line connecting the center of the positioning part 3 and the axis on a projection plane perpendicular to the axial direction x, and the line connecting the center of the tooth tip / groove of the second end face tooth 21 and the axis, thereby obtaining the second included angle β. In this way, by ensuring that the second included angle β is equal to the first included angle α, it is possible to ensure accurate meshing of the end face teeth of the second member to be connected 2 and the first member to be connected 1 when the first connecting part 31 of the positioning part and the second connecting part 32 of the positioning part are connected accordingly.

[0037] It is also understandable that when the tooth groove of the first end face tooth 11 meshes with the tooth tip of the second end face tooth 21, the tooth tip of the first end face tooth 11 also meshes with the tooth groove of the second end face tooth 21. Therefore, by designing the position of the positioning part 3 in the circumferential direction such that the positioning part 3 and one of the tooth tips of the first end face tooth 11 have a first included angle α in the circumferential direction, and the positioning part 3 and one of the tooth grooves of the second end face tooth 21 have a second included angle β in the circumferential direction that is equal to the first included angle α, it is also possible to achieve mutual correspondence between the first end face tooth 11 and the second end face tooth 21, ensuring that the end face teeth of the second part to be connected 2 and the first part to be connected 1 can accurately mesh.

[0038] Normally, after determining the angle values ​​of the first included angle α and the second included angle β, the corresponding flange needs to be accurately installed on the circumference of the corresponding part to be connected according to the preset first included angle α and the second included angle β, so that the corresponding part to be connected can have equal first included angle α and second included angle β. However, during the flange installation process, there may be installation errors, which may cause the actual first included angle α of the finished product to be unequal to the preset first included angle α or the actual second included angle β to be unequal to the preset second included angle β, resulting in the end face teeth of the corresponding part to be connected not being able to mesh accurately.

[0039] In this regard, taking the installation of the first flange 12 and the first component to be connected 1 as an example, in some embodiments, such as Figure 4 As shown, the outer circumferential edge of the first component to be connected 1 is provided with a first connecting key 13, and the first connecting key 13 is aligned with one of the tooth grooves of the first end face tooth 11 in the circumferential direction relative to the axis. The inner circumferential edge of the first flange 12 is provided with a first keyway 122 corresponding to the first connecting key 13, and the first keyway 122 is connected to the first connecting key 13. The positioning part 3 and the first keyway 122 have a third included angle γ in the circumferential direction. The difference between the third included angle γ and the first included angle α is a1, and the included angle between two adjacent tooth grooves of the first end face tooth 11 in the circumferential direction is b1. The two satisfy the following relationship: a1 / b1=n, where n is a natural number. By connecting the first keyway 122 with the first connecting key 13, the first flange 12 can be conveniently, quickly and accurately positioned in the circumferential direction of the first part to be connected 1, and ensure that the positioning part 3 of the first flange 12 and the first end face tooth 11 of the first part to be connected 1 have a corresponding positional relationship in the circumferential direction (that is, the positioning part 3 and one of the tooth grooves of the first end face tooth 11 have a first included angle α in the circumferential direction), so that the first part to be connected 1 can accurately mesh with the second part to be connected 2 which has a second included angle β.

[0040] Specifically, such as Figure 4As shown, the first connecting key 13 is a rectangular boss that protrudes outward from the outer circumferential surface of the first connecting part 1, and the first keyway 122 is a rectangular groove that is recessed inward from the inner circumferential surface of the first flange 12. The width of the first keyway 122 can be designed to be slightly larger than the width of the first connecting key 13, so that the first connecting key 13 can be clearance-fitted with the first keyway 122. Specifically, by showing the line connecting the center of the first connecting key 13 to the axis and the line connecting the center of the tooth groove of the first end face tooth 11 to the axis on a projection plane perpendicular to the x-axis, when the two coincide, the first connecting key 13 and the tooth groove of the first end face tooth 11 are aligned with the axis in the circumferential direction, thus determining the circumferential orientation of the first connecting key 13; by showing the line connecting the center of the first keyway 122 to the axis and the line connecting the center of the positioning part 3 to the axis on a projection plane perpendicular to the x-axis, the included angle between the line connecting the center of the positioning part 3 to the axis and the line connecting the center of the first keyway 122 to the axis is the third included angle γ. The difference between the third included angle γ and the preset first included angle α is set as a1, and the included angle in the circumferential direction between two adjacent tooth grooves of the first end face tooth 11 is set as b1. When the two satisfy the condition a1 / b1=n and n is a natural number, it is determined that the circumferential orientation of the first keyway 122 meets the requirements. For example, such as Figure 4 As shown, the tooth groove in the first end face tooth 11 that is aligned with the first connecting key 13 is used as the tooth groove that forms the first included angle α with the positioning part 3. At this time, the third included angle γ is equal to the first included angle α, and the difference between the third included angle γ and the first included angle α is a1=0, n=a1 / b1=0 / b1=0, that is, n is a natural number 0. Therefore, the setting orientation of the first keyway 122 in the circumferential direction meets the requirements. In this way, the first flange 12 is installed in the circumferential direction of the first part to be connected 1 by the cooperation of the first keyway 122 and the first connecting key 13, that is, the first flange 12 and the first part to be connected 1 are accurately positioned in the circumferential direction, and the first part to be connected 1 is obtained with the actual first included angle α matching the preset first included angle α.

[0041] It is understandable that when the tooth groove of the first end face tooth 11 meshes with the tooth tip of the second end face tooth 21, the tooth tip of the first end face tooth 11 also meshes with the tooth groove of the second end face tooth 21. Therefore, when the angle between the positioning part 3 and one of the tooth grooves of the second end face tooth 21 in the circumferential direction is taken as the second included angle β, the first connecting key 13 can also be aligned with one of the tooth tips of the first end face tooth 11 in the circumferential direction relative to the axis, so as to obtain the first connecting part 1 whose actual first included angle α matches the preset first included angle α.

[0042] In some embodiments, such as Figure 6As shown, the second connecting part 2 has a second connecting key 23 on its outer circumferential edge. The second connecting key 23 and one of the tooth tips of the second end face tooth 21 are aligned with the axis in the circumferential direction. The second flange 22 has a second keyway 222 on its inner circumferential edge corresponding to the second connecting key 23. The second keyway 222 is connected to the second connecting key 23. The positioning part 3 and the second keyway 222 have a fourth included angle δ in the circumferential direction. The difference between the fourth included angle δ and the second included angle β is a2. The included angle between two adjacent tooth tips of the second end face tooth 21 in the circumferential direction is b2. The two satisfy the following relationship: a2 / b2=n, where n is a natural number. By connecting the second keyway 222 with the second connecting key 23, the second flange 22 can be conveniently, quickly and accurately positioned in the circumferential direction of the second part to be connected 2, and ensure that the positioning part 3 of the second flange 22 and the second end face tooth 21 of the second part to be connected 2 have a corresponding positional relationship in the circumferential direction (that is, the positioning part 3 and one of the tooth tips of the second part to be connected 2 have a second included angle β in the circumferential direction), so that the second part to be connected 2 can accurately mesh with the first part to be connected 1 having a first included angle α.

[0043] Specifically, such as Figure 6 As shown, the second connecting key 23 is a rectangular boss that protrudes outward from the outer circumferential surface of the second part to be connected 2, and the second keyway 222 is a rectangular groove that is recessed inward from the inner circumferential surface of the second flange 22. The width of the second keyway 222 can be designed to be slightly larger than the width of the second connecting key 23 so that the second connecting key 23 can be clearance-fitted with the second keyway 222. Specifically, by showing the line connecting the center of the second connecting key 23 to the axis and the line connecting the center of the tooth tip of the second end face tooth 21 to the axis on a projection plane perpendicular to the x-axis, when the two coincide, the tooth tips of the second connecting key 23 and the second end face tooth 21 are aligned with the axis in the circumferential direction, thus determining the circumferential orientation of the second connecting key 23; by showing the line connecting the center of the second keyway 222 to the axis and the line connecting the center of the positioning part 3 to the axis on a projection plane perpendicular to the x-axis, the included angle between the line connecting the center of the positioning part 3 to the axis and the line connecting the center of the second keyway 222 to the axis is the fourth included angle δ. The difference between the fourth included angle δ and the preset second included angle β is set as a2, and the included angle in the circumferential direction between two adjacent tooth tips of the second end face tooth 21 is set as b2. When both satisfy the condition a2 / b2=n and n is a natural number, it is determined that the circumferential orientation of the second keyway 222 meets the requirements. For example, as Figure 6As shown, the tooth tip of the second end face tooth 21 aligned with the second connecting key 23 is taken as the tooth tip forming the second included angle β with the positioning part 3. At this time, the fourth included angle δ is equal to the second included angle β, and the difference between the fourth included angle δ and the second included angle β is a2=0, n=a2 / b2=0 / b2=0, that is, n is a natural number 0. Therefore, the setting orientation of the second keyway 222 in the circumferential direction meets the requirements. In this way, the second flange 22 is installed in the circumferential direction of the second part to be connected 2 through the cooperation of the second keyway 222 and the second connecting key 23, that is, the second flange 22 and the second part to be connected 2 are accurately positioned in the circumferential direction, and the second part to be connected 2 is obtained with the actual second included angle β matching the preset second included angle β.

[0044] It is understandable that when the tooth tip of the second end face tooth 21 meshes with the tooth groove of the first end face tooth 11, the tooth groove of the second end face tooth 21 also meshes with the tooth tip of the first end face tooth 11. Therefore, when the angle between the positioning part 3 and one of the tooth tips of the first end face tooth 11 in the circumferential direction is taken as the first included angle α, the second connecting key 23 can also be aligned with one of the tooth grooves of the second end face tooth 21 in the circumferential direction relative to the axis, so as to obtain a second connecting member 2 whose actual second included angle β matches the preset second included angle β.

[0045] In some embodiments, such as Figure 4 and Figure 6 As shown, the fourth included angle δ and the third included angle γ can be set to equal angle values, so that the first keyway 122 and the second keyway 222 are in the same position in the circumferential direction. Simultaneously, the first connecting key 13, which mates with the first keyway 122, and the second connecting key 23, which mates with the second keyway 222, are also in the same position in the circumferential direction. Based on this identical positional relationship, on the one hand, installation and alignment are convenient, improving assembly efficiency; on the other hand, when all connecting keys and keyways have the same shape, the connecting keys and keyways can be formed using the same mold, thereby reducing mold development costs.

[0046] In some embodiments, such as Figure 4 and Figure 6 As shown, the first keyway 122 is disposed on the first flange 12 in the circumferential direction near the positioning part 3. When all the first connecting parts 121 have the same shape, the position of the positioning part 3 can be quickly determined by the orientation of the first keyway 122, facilitating alignment and connection of the positioning part 3 and improving assembly efficiency. Similarly, the second keyway 222 is disposed on the second flange 22 in the circumferential direction near the positioning part 3, achieving the same effect as described above when all the second connecting parts 221 have the same shape; further details are omitted here.

[0047] In some embodiments, such as Figure 4 and Figure 6As shown, the included angle between two adjacent first connecting parts 121 in the circumferential direction is less than or equal to 180 degrees; similarly, based on the corresponding connection between the second connecting part 221 and the first connecting part 121, the included angle between two adjacent second connecting parts 221 in the circumferential direction is less than or equal to 180 degrees. In this way, it is possible to avoid the connection points of the first flange 12 and the second flange 22 being too concentrated, which could lead to overload or instability in the circumferential direction of their connection.

[0048] Furthermore, such as Figure 4 and Figure 6 As shown, a plurality of first connecting portions 121 are arranged rotationally symmetrically along the circumferential direction on the first flange 12; similarly, based on the corresponding connection between the second connecting portions 221 and the first connecting portions 121, a plurality of second connecting portions 221 are arranged rotationally symmetrically along the circumferential direction on the second flange 22. For example, in this embodiment, the first flange 12 is provided with a total of three first connecting portions 121, which are arranged rotationally symmetrically along the circumferential direction, and the included angle between any two adjacent first connecting portions 121 in the circumferential direction is 120 degrees; similarly, the second flange 22 is provided with three corresponding second connecting portions 221, which are arranged rotationally symmetrically along the circumferential direction, and the included angle between any two adjacent second connecting portions 221 in the circumferential direction is 120 degrees. In this way, the alignment of the connection points between the first flange 12 and the second flange 22 can be improved, and the load can be evenly transmitted along the three sets of connecting portions, avoiding the eccentricity of torque transmission.

[0049] In some embodiments, such as Figure 1 and Figure 2 As shown, the first connecting part 121 includes a connector 1212 and a first mounting hole 1211, and the second connecting part 221 includes a second mounting hole 2211. The connector 1212 passes through the first mounting hole 1211 and the second mounting hole 2211, and fixes the first connecting part 121 and the second connecting part 221 together. Specifically, in this embodiment, the connector 1212 is a threaded fastener, the first mounting hole 1211 is a through hole, and the second mounting hole 2211 is a threaded hole that threadedly engages with the connector 1212. One end of the connector 1212 abuts against the side of the first mounting hole 1211 away from the second mounting hole 2211, and the other end passes through the first mounting hole 1211 and is threadedly connected to the second mounting hole 2211. With the above configuration, the corresponding connection between the first connecting part 121 and the second connecting part 221 can be conveniently and quickly achieved, and the operation is simple and the connection is stable.

[0050] In some embodiments, such as Figure 4 and Figure 6As shown, the first flange 12 has a plurality of first welding notches 123 on its circumferential inner edge, which are evenly distributed along the circumferential direction; the second flange 22 has a plurality of second welding notches 223 on its circumferential inner edge, which are also evenly distributed along the circumferential direction. By setting the welding notches, the flow of the solder and surface tension can be optimized, the effective welding area can be increased, and thus a stable and effective connection between the flange and the corresponding component to be connected can be ensured.

[0051] Furthermore, in another embodiment, a vehicle is provided, including the aforementioned end-face gear connection structure; wherein the first component to be connected 1 is a drive shaft outer CV joint, and the second component to be connected 2 is a wheel hub bearing, that is, the drive shaft outer CV joint and the wheel hub bearing of the vehicle are connected by the end-face gear connection structure in the above embodiment. It is understood that for other structures and working principles of the end-face gear connection structure, please refer to the above description of the embodiments of the end-face gear connection structure; for other structures of the vehicle, please refer to the prior art; since the end-face gear connection structure has the aforementioned technical effects, the vehicle having this end-face gear connection structure should also have corresponding technical effects, which will not be elaborated here.

[0052] It is understood that, in this utility model, unless otherwise explicitly specified and limited, the terms "assembly," "connection," 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 or an electrical connection; 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. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0053] 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 one or more of that feature. "A plurality of" means two or more, unless otherwise explicitly specified. The terms "some embodiments," "exemplarily," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this utility model.

[0054] The illustrative expressions of the terms used above do not necessarily refer to the same embodiments or examples. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, those skilled in the art can combine and integrate the different embodiments or examples described herein, as well as the features of those different embodiments or examples, without contradiction.

[0055] Although embodiments of the present invention have been shown and described above, it should be understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make modifications, substitutions and variations to the above embodiments within the scope of the present invention. Therefore, any changes or modifications made in accordance with the claims and description of the present invention should fall within the scope of the patent coverage of the present invention.

Claims

1. A toothed end face connection structure, characterized in that, include: A first flange is disposed on the circumference of the first component to be connected, and the first flange is provided with a plurality of first connecting portions distributed along its circumference; The first end face tooth is provided at one axial end of the first component to be connected; A second flange is disposed circumferentially on the second component to be connected. The second flange has a plurality of second connecting portions distributed circumferentially thereon, and the second connecting portions are connected one-to-one with the first connecting portions; and The second end face tooth is provided at one axial end of the second part to be connected, and the second end face tooth is adapted to mesh with the first end face tooth; One of the corresponding connected first and second connecting parts is a positioning part. The positioning part and one of the tooth grooves of the first end face tooth have a first included angle in the circumferential direction, and the positioning part and one of the tooth tips of the second end face tooth have a second included angle in the circumferential direction. The second included angle is equal to the first included angle.

2. The end-face tooth connection structure according to claim 1, characterized in that, The first connecting part has a first connecting key on its outer circumferential edge, and the first connecting key is aligned with one of the tooth grooves of the first end face tooth in the circumferential direction relative to the axis. The first flange has a first keyway on its inner circumferential edge corresponding to the first connecting key, and the first keyway is connected to the first connecting key. The positioning part and the first keyway have a third angle in the circumferential direction, and the difference between the third angle and the first angle is a1. The angle between two adjacent tooth grooves of the first end face tooth in the circumferential direction is b1. The two satisfy the following relationship: a1 / b1=n, where n is a natural number.

3. The end-face tooth connection structure according to claim 2, characterized in that, The second connecting part has a second connecting key on its outer circumferential edge. The second connecting key and one of the tooth tips of the second end face tooth are aligned with the axis in the circumferential direction. The second flange has a second keyway on its inner circumferential edge corresponding to the second connecting key. The second keyway is connected to the second connecting key. The positioning part and the second keyway have a fourth angle in the circumferential direction. The difference between the fourth angle and the second angle is a2. The angle between two adjacent tooth tips of the second end face tooth in the circumferential direction is b2. The two satisfy the following relationship: a2 / b2=n, where n is a natural number.

4. The end-face tooth connection structure according to claim 3, characterized in that, The fourth included angle is equal to the third included angle.

5. The end-face tooth connection structure according to claim 3 or 4, characterized in that, The first keyway and the second keyway are both located close to the positioning part in the circumferential direction.

6. The end-face tooth connection structure according to any one of claims 1-4, characterized in that, The angle between two adjacent first connecting parts in the circumferential direction is less than or equal to 180 degrees.

7. The end-face tooth connection structure according to claim 6, characterized in that, Several of the first connecting portions are arranged symmetrically along the circumferential direction.

8. The end-face tooth connection structure according to any one of claims 1-4, characterized in that, The first connecting part includes a connector and a first mounting hole, and the second connecting part includes a second mounting hole. The connector passes through the first mounting hole and the second mounting hole and fixes the first connecting part and the second connecting part together.

9. A toothed end face connection structure according to any one of claims 1-4, characterized in that, The first flange has a plurality of first welding notches on its circumferential inner edge, and the plurality of first welding notches are evenly distributed along the circumferential direction; the second flange has a plurality of second welding notches on its circumferential inner edge, and the plurality of second welding notches are evenly distributed along the circumferential direction.

10. A vehicle, characterized in that, It includes the end face tooth connection structure as described in any one of claims 1-9; wherein the first component to be connected is the outer ball cage of the drive shaft, and the second component to be connected is the hub bearing.

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