Quasi-constant-speed transmission shaft assembly and automobile

By designing specific transmission shaft members and support structures, the quasi-constant speed movement of the dual transmission shaft is achieved, which solves the problem that the quasi-constant speed cannot be achieved in the prior art, and improves the dynamic balance performance of the transmission shaft.

CN222229225UActive Publication Date: 2024-12-24FAWER AUTOMOTIVE PARTS LIMITED COMPARTY +1
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Patent Information

Application Number
CN202420700962.7
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-04-08
Publication Date
2024-12-24
Estimated Expiration
2034-04-08

AI Technical Summary

Technical Problem

The existing dual-connected transmission shaft structure cannot achieve quasi-constant velocity movement because when arranged at large angles, the degrees of freedom of the universal joints are not limited, resulting in the inability to achieve approximately equal angular velocity movement at different angles.

Method used

A quasi-constant speed transmission shaft assembly is designed, including a first shaft member, a second shaft member, a connecting member and a bearing support member. The two ends of the double-connected structure are connected by a specific mounting part and a support part to realize the movement of the universal joint at both ends of the double-connected structure. The linkage, control the degree of freedom, and meet the requirements of quasi-constant speed. Specific implementations include the use of ball bearings, inner and outer ball head support and sealing members, and dynamic linkage is achieved through bolts and sealing sleeves.

Benefits of technology

The linkage and freedom control of the dual-structure universal joints are realized when moving, and the requirements of quasi-constant speed can be met to a certain extent, improving the dynamic balance performance of the transmission shaft.

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Abstract

The utility model provides a quasi-constant-speed transmission shaft assembly and an automobile. The quasi-constant-speed transmission shaft assembly comprises a first shaft component, a second shaft component, a connecting component and a bearing supporting component. Each of the first shaft component and the second shaft component is provided with four mounting parts; a connecting component is arranged between the first shaft component and the second shaft component, two mounting parts of the first shaft component are connected to a first end face of the connecting component, and two mounting parts of the second shaft component are connected to a second end face, opposite to the first end face, of the connecting component; the bearing supporting component is provided with a first supporting part and a second supporting part connected with the first supporting part through a bearing; the end, away from the bearing, of the first supporting part is connected with the other two installation parts of the first shaft component bearing, and the end, away from the bearing, of the second supporting part is connected with the other two installation parts of the second shaft component bearing. In conclusion, the quasi-constant-speed transmission shaft assembly realizes linkage when the universal joints at the two ends of the duplex structure move, and the degree of freedom is controlled.
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Description

Technical Field

[0001] The present application relates to the field of automobile technology, and in particular to a quasi-constant velocity transmission shaft assembly and an automobile. Background Art

[0002] The drive shaft is an important component for transmitting power in the automobile transmission system. The dynamic balance of the drive shaft is also important for the automobile. Generally, a dynamic balance test is carried out before leaving the factory and it is adjusted on a balancing machine. Its function is to transmit the power of the engine to the wheels together with the gearbox and drive axle to generate driving force for the car.

[0003] Combination Figure 1 As shown, a structure of a double-coupled transmission shaft in the prior art is disclosed, which is composed of two cross-axis universal joints. In order to ensure that the rotational speeds of the two universal joints of the transmission shaft are close, the cross-axis eccentricity is used to adjust; however, when arranged at a large angle, since the two universal joints do not restrict each other, only approximately equal angular velocity motion can be achieved at different rotation angles, that is, the existing structure cannot meet the quasi-constant speed requirements.

[0004] Therefore, there is an urgent need for a quasi-constant velocity transmission shaft assembly and a vehicle to solve the technical problems existing in the prior art to a certain extent. Utility Model Content

[0005] The purpose of the present application is to provide a quasi-constant speed transmission shaft assembly and a vehicle, so as to solve the technical problem that the structure of the double-coupled transmission shaft in the prior art cannot meet the quasi-constant speed requirement to a certain extent.

[0006] The present application provides a quasi-constant velocity transmission shaft assembly, comprising a first shaft component, a second shaft component, a connecting component, and a bearing support component;

[0007] The first shaft member and the second shaft member each have four mounting portions;

[0008] The connecting member is disposed between the first shaft member and the second shaft member, and two of the mounting portions of the first shaft member are connected to a first end surface of the connecting member, and two of the mounting portions of the second shaft member are connected to a second end surface of the connecting member opposite to the first end surface;

[0009] The bearing support member has a first support portion and a second support portion connected to the first support portion through a bearing;

[0010] One end of the first support portion facing away from the bearing is connected to the other two mounting portions of the first shaft bearing, and one end of the second support portion facing away from the bearing is connected to the other two mounting portions of the second shaft bearing.

[0011] In the above technical solution, further, the first shaft component includes a first connecting shaft and a second connecting shaft vertically connected to the first connecting shaft, the first connecting shaft is vertically connected to the second connecting shaft, so that the end of the first connecting shaft is formed with a first mounting portion and a second mounting portion, and the end of the second connecting shaft is formed with a third mounting portion and a fourth mounting portion;

[0012] The second shaft component includes a third connecting shaft and a fourth connecting shaft vertically connected to the third connecting shaft, so that the end of the third connecting shaft is formed with a fifth mounting portion and a sixth mounting portion, and the end of the fourth connecting shaft is formed with a seventh mounting portion and an eighth mounting portion;

[0013] The first connecting axis is parallel to the third connecting axis, the second connecting axis and the fourth connecting axis, so that the first mounting portion corresponds to the fifth mounting portion, the second mounting portion corresponds to the sixth mounting portion, the third mounting portion corresponds to the fourth mounting portion, and the fourth mounting portion corresponds to the seventh mounting portion.

[0014] In the above technical solution, further, the connecting member includes a connecting ring and a protruding portion;

[0015] The side walls of the connecting ring along the axial direction are respectively provided with two protrusions; and the two protrusions on one side wall correspond to the first mounting portion and the second mounting portion respectively, and the two protrusions on the other side wall correspond to the fifth mounting portion and the sixth mounting portion respectively.

[0016] In the above technical solution, further, the bearing support member includes an inner ball head support that can serve as the first support portion and an outer ball head support that can serve as the second support portion;

[0017] The bearing passes through the connecting ring and its two ends are respectively connected to the inner ball head support and the outer ball head support;

[0018] The inner ball head support has a ninth mounting portion corresponding to the third mounting portion and a tenth mounting portion corresponding to the fourth mounting portion;

[0019] The outer ball head support has an eleventh mounting portion corresponding to the seventh mounting portion and a twelfth mounting portion corresponding to the eighth mounting portion.

[0020] In the above technical solution, further, the quasi-constant velocity transmission shaft assembly also includes a sealing component; the sealing component is sleeved on the bearing.

[0021] In the above technical solution, further, the sealing component includes a sealing sleeve and a hoop;

[0022] The sealing sleeve is sleeved on the bearing through a hoop.

[0023] In the above technical solution, further, the sealing sleeve is bent toward the outer ball head support.

[0024] In the above technical solution, further, the bearing is a ball bearing.

[0025] In the above technical solution, further, the third mounting portion and the ninth mounting portion, the fourth mounting portion and the tenth mounting portion, the seventh mounting portion and the eleventh mounting portion, and the eighth mounting portion and the twelfth mounting portion are all connected by bolts;

[0026] The first mounting portion, the second mounting portion, the fifth mounting portion, and the sixth mounting portion are respectively connected to the raised portion by bolts.

[0027] The present application also provides an automobile, comprising the above-mentioned quasi-constant velocity transmission shaft assembly.

[0028] Compared with the prior art, the beneficial effects of this application are:

[0029] The present application provides a quasi-constant velocity transmission shaft assembly, comprising a first shaft component, a second shaft component, a connecting component, and a bearing support component;

[0030] The first shaft member and the second shaft member each have four mounting portions;

[0031] The connecting member is disposed between the first shaft member and the second shaft member, and two of the mounting portions of the first shaft member are connected to a first end surface of the connecting member, and two of the mounting portions of the second shaft member are connected to a second end surface of the connecting member opposite to the first end surface;

[0032] The bearing support member has a first support portion and a second support portion connected to the first support portion through a bearing;

[0033] One end of the first support portion facing away from the bearing is connected to the other two mounting portions of the first shaft bearing, and one end of the second support portion facing away from the bearing is connected to the other two mounting portions of the second shaft bearing.

[0034] In summary, the quasi-constant velocity transmission shaft assembly realizes the linkage of the universal joints at both ends of the double-linked structure, and the degree of freedom is controlled to a certain extent, which can meet the quasi-constant velocity requirements.

[0035] The present application also provides an automobile, comprising the above-mentioned quasi-constant velocity transmission shaft assembly, and thus having all the beneficial effects of the quasi-constant velocity transmission shaft assembly, which will not be elaborated in detail here. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] In order to more clearly illustrate the specific implementation methods of the present application or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0037] Figure 1 It is a structural schematic diagram of a transmission shaft assembly in the prior art;

[0038] Figure 2 This is a schematic structural diagram of the quasi-constant velocity transmission shaft assembly provided in Example 1 of the present application;

[0039] Figure 3 This is a schematic structural diagram of a hidden bearing support component of a quasi-constant velocity transmission shaft assembly provided in Example 1 of the present application;

[0040] Figure 4 This is a schematic structural diagram of a bearing support member in a quasi-constant velocity transmission shaft assembly provided in Example 1 of the present application at a first viewing angle;

[0041] Figure 5 This is a schematic structural diagram of a bearing support member in a quasi-constant velocity transmission shaft assembly provided in Example 1 of the present application at a second viewing angle;

[0042] Figure 6 This is a schematic structural diagram of a hidden bearing support component and a sealing component of a quasi-constant velocity transmission shaft assembly provided in Example 1 of the present application;

[0043] Figure 7 This is a schematic structural diagram of the inner ball head support in the quasi-constant velocity transmission shaft assembly provided in the first embodiment of the present application at a first viewing angle;

[0044] Figure 8 This is a schematic structural diagram of the inner ball head support in the quasi-constant velocity transmission shaft assembly provided in the first embodiment of the present application at a second viewing angle;

[0045] Fig. 9 This is a schematic structural diagram of the outer ball head support in the quasi-constant velocity transmission shaft assembly provided in the first embodiment of the present application at a first viewing angle;

[0046] Fig.10 This is a schematic structural diagram of the outer ball head support in the quasi-constant velocity transmission shaft assembly provided in the first embodiment of the present application at a second viewing angle;

[0047] Fig.11 A cross-sectional view of the quasi-constant velocity transmission shaft assembly provided in Example 1 of the present application;

[0048] Fig.12 for Fig.11 A magnified image of point A;

[0049] Fig.13 This is a schematic structural diagram of the first shaft component in the quasi-constant velocity transmission shaft assembly provided in Example 1 of the present application;

[0050] Fig.14 This is a schematic structural diagram of the second shaft component in the quasi-constant velocity transmission shaft assembly provided in Example 1 of the present application.

[0051] Reference numerals:

[0052] 1-first shaft member; 2-second shaft member; 3-connecting member; 4-bearing support member; 5-first connecting shaft; 6-second connecting shaft; 7-first mounting portion; 8-second mounting portion; 10-third mounting portion; 11-fourth mounting portion; 12-third connecting shaft; 13-fourth connecting shaft; 15-fifth mounting portion; 16-sixth mounting portion; 17-seventh mounting portion; 18-eighth mounting portion; 19-connecting ring; 20-raised portion; 22-inner ball head support; 23-outer ball head support; 24-ninth mounting portion; 25-tenth mounting portion; 26-eleventh mounting portion; 27-twelfth mounting portion; 28-sealing member; 29-sealing sleeve; 30-hoop; 31-bolt; 32-bearing; 33-spline shaft fork. DETAILED DESCRIPTION

[0053] The following specific embodiments are provided to help the reader obtain a comprehensive understanding of the methods, devices and / or systems described herein. However, after understanding the disclosure of the present application, various changes, modifications and equivalents of the methods, devices and / or systems described herein will be apparent. For example, the order of operations described herein is merely an example, and is not limited to the order set forth herein, but in addition to the operations that must occur in a particular order, changes that will be apparent after understanding the disclosure of the present application may be made. In addition, in order to improve clarity and brevity, descriptions of features known in the art may be omitted.

[0054] The features described herein may be implemented in different forms and should not be interpreted as being limited to the examples described herein. Rather, the examples described herein have been provided only to illustrate some of the many possible ways of implementing the methods, devices and / or systems described herein that will be apparent after understanding the disclosure of the present application.

[0055] Throughout the specification, when an element (such as a layer, a region, or a substrate) is described as being “on”, “connected to”, “bound to”, “over”, or “covering” another element, it may be directly “on”, “connected to”, “bound to”, “over”, or “covering” another element, or one or more other elements may be present between them. In contrast, when an element is described as being “directly on”, “directly connected to”, “directly bound to”, “directly over”, or “directly covering” another element, there may be no other elements present between them.

[0056] As used herein, the term "and / or" includes any one of the associated listed items and any combination of any two or more items.

[0057] Although terms such as "first," "second," and "third" may be used herein to describe various members, components, regions, layers, or portions, these members, components, regions, layers, or portions are not limited by these terms. Rather, these terms are only used to distinguish one member, component, region, layer, or portion from another member, component, region, layer, or portion. Therefore, without departing from the teachings of the examples described herein, the first member, component, region, layer, or portion referred to may also be referred to as the second member, component, region, layer, or portion.

[0058] For ease of description, spatial relational terms such as "above", "upper", "below", and "lower" may be used herein to describe the relationship of one element to another element as shown in the accompanying drawings. Such spatial relational terms are intended to include different orientations of the device in use or operation in addition to the orientation depicted in the accompanying drawings. For example, if the device in the accompanying drawings is turned over, an element described as being "above" or "upper" relative to another element will subsequently be "below" or "lower" relative to the other element. Therefore, the term "above" includes both "above" and "below" orientations depending on the spatial orientation of the device. The device may also be positioned in other ways (e.g., rotated 90 degrees or in other orientations), and the spatial relational terms used herein will be interpreted accordingly.

[0059] The terms used herein are only used to describe various examples and are not used to limit the present disclosure. Unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. The terms "include", "comprise" and "have" list the stated features, quantities, operations, components, elements and / or their combinations that exist, but do not exclude the existence or addition of one or more other features, quantities, operations, components, elements and / or their combinations.

[0060] Variations in the shapes shown in the drawings may occur due to manufacturing techniques and / or tolerances. Therefore, the examples described herein are not limited to the specific shapes shown in the drawings but include variations in shapes that occur during manufacturing.

[0061] The features of the examples described herein may be combined in various ways that will be apparent after understanding the disclosure of the present application. In addition, although the examples described herein have various configurations, other configurations are possible as will be apparent after understanding the disclosure of the present application.

[0062] Embodiment 1

[0063] Combine the following Figure 2-Figure 14 As shown, a quasi-constant velocity transmission shaft assembly provided by the present application is described in detail.

[0064] In this embodiment, a quasi-constant velocity transmission shaft assembly is provided. The quasi-constant velocity transmission shaft assembly includes a first shaft component 1 , a second shaft component 2 , a connecting component 3 and a bearing support component 4 .

[0065] Specifically, the first shaft component 1 and the second shaft component 2 each have four mounting portions.

[0066] Furthermore, combined with Fig.13 and Fig.14 As shown, the first shaft component 1 includes a first connecting shaft 5 and a second connecting shaft 6 vertically connected to the first connecting shaft 5, the first connecting shaft 5 is vertically connected to the second connecting shaft 6, so that the end of the first connecting shaft 5 is formed with a first mounting portion 7 and a second mounting portion 8, and the end of the second connecting shaft 6 is formed with a third mounting portion 10 and a fourth mounting portion 11; the second shaft component 2 includes a third connecting shaft 12 and a fourth connecting shaft 13 vertically connected to the third connecting shaft 12, so that the end of the third connecting shaft 12 is formed with a fifth mounting portion 15 and a sixth mounting portion 16, and the end of the fourth connecting shaft 13 is formed with a seventh mounting portion 17 and an eighth mounting portion 18.

[0067] Furthermore, one end of the second shaft member away from the first shaft member is connected to the spline shaft yoke 33 .

[0068] Furthermore, combined with Fig.13 and Fig.14As shown, the first connecting axis 5 is parallel to the third connecting axis 12, and the second connecting axis 6 is parallel to the fourth connecting axis 13, so that the first mounting portion 7 corresponds to the fifth mounting portion 15, the second mounting portion 8 corresponds to the sixth mounting portion 16, the third mounting portion 10 corresponds to the fourth mounting portion 11, and the fourth mounting portion 11 corresponds to the seventh mounting portion 17.

[0069] Specifically, a connecting member 3 is arranged between the first shaft member 1 and the second shaft member 2, and two mounting portions of the first shaft member 1 are connected to a first end face of the connecting member 3, and two mounting portions of the second shaft member 2 are connected to a second end face of the connecting member 3 opposite to the first end face.

[0070] Furthermore, combined with Figure 2 , Figure 4 , Figure 5 as well as Fig.12 As shown, the connecting member 3 includes a connecting ring 19 and a protrusion 20. The connecting ring 19 is provided with two protrusions 20 on its side walls along the axial direction; and the two protrusions 20 on one side wall correspond to the first mounting portion 7 and the second mounting portion 8 respectively, and the two protrusions 20 on the other side wall correspond to the fifth mounting portion 15 and the sixth mounting portion 16 respectively.

[0071] Furthermore, the boss 20 is connected to the first mounting portion 7, the second mounting portion 8, the fifth mounting portion 15 and the sixth mounting portion 16 respectively through bolts 31. That is, the first shaft member 1 and the second shaft member 2 are connected through the connecting member 3.

[0072] Specifically, the bearing support member 4 has a first support portion and a second support portion connected to the first support portion through a bearing 32; one end of the first support portion facing away from the bearing 32 is connected to the other two mounting portions of the first shaft member 1, and the end of the second support portion facing away from the bearing 32 is connected to the other two mounting portions of the second shaft member 2.

[0073] Furthermore, combined with Figure 3 , Figure 6 , Figure 7 , Figure 8 , Fig. 9 and Fig.10 As shown, the bearing support member 4 includes an inner ball head support 22 that can serve as a first support portion and an outer ball head support 23 that can serve as a second support portion; the bearing 32 passes through the connecting ring 19 and its two ends are respectively connected to the inner ball head support 22 and the outer ball head support 23; the inner ball head support 22 has a ninth mounting portion 24 corresponding to the third mounting portion 10 and a tenth mounting portion 25 corresponding to the fourth mounting portion 11; the outer ball head support 23 has an eleventh mounting portion 26 corresponding to the seventh mounting portion 17 and a twelfth mounting portion 27 corresponding to the eighth mounting portion 18.

[0074] Preferably, the bearing 32 is a ball bearing.

[0075] Preferably, the third mounting portion 10 and the ninth mounting portion 24 , the fourth mounting portion 11 and the tenth mounting portion 25 , the seventh mounting portion 17 and the eleventh mounting portion 26 , and the eighth mounting portion 18 and the twelfth mounting portion 27 are all connected by bolts 31 .

[0076] In summary, the quasi-constant velocity transmission shaft assembly realizes the linkage of the universal joints at both ends of the double-linked structure during movement, and the degree of freedom is controlled.

[0077] In this embodiment, combined with Figure 3 , Fig.11 as well as Fig.12 As shown, the quasi-constant velocity transmission shaft assembly further includes a sealing component 28 ; the sealing component 28 is sleeved on the bearing 32 .

[0078] Specifically, the sealing member 28 includes a sealing sleeve 29 and a hoop 30 ; the sealing sleeve 29 is sleeved on the bearing 32 via the hoop 30 .

[0079] Furthermore, the sealing sleeve 29 is bent toward the outer ball head support 23 .

[0080] Embodiment 2

[0081] The present application also provides an automobile, comprising the above-mentioned quasi-constant velocity transmission shaft assembly, and thus having all the beneficial effects of the quasi-constant velocity transmission shaft assembly, which will not be elaborated in detail here.

[0082] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A quasi-constant velocity transmission shaft assembly, characterized in that: comprising a first shaft member, a second shaft member, a connecting member and a bearing support member; The first shaft member and the second shaft member each have four mounting portions; The connecting member is disposed between the first shaft member and the second shaft member, and two of the mounting portions of the first shaft member are connected to a first end surface of the connecting member, and two of the mounting portions of the second shaft member are connected to a second end surface of the connecting member opposite to the first end surface; The bearing support member has a first support portion and a second support portion connected to the first support portion through a bearing; One end of the first support portion facing away from the bearing is connected to the other two mounting portions of the first shaft bearing, and one end of the second support portion facing away from the bearing is connected to the other two mounting portions of the second shaft bearing.

2. The quasi-constant velocity transmission shaft assembly according to claim 1, characterized in that: The first shaft component includes a first connecting shaft and a second connecting shaft vertically connected to the first connecting shaft, the first connecting shaft is vertically connected to the second connecting shaft, so that the end of the first connecting shaft is formed with a first mounting portion and a second mounting portion, and the end of the second connecting shaft is formed with a third mounting portion and a fourth mounting portion; The second shaft component includes a third connecting shaft and a fourth connecting shaft vertically connected to the third connecting shaft, so that the end of the third connecting shaft is formed with a fifth mounting portion and a sixth mounting portion, and the end of the fourth connecting shaft is formed with a seventh mounting portion and an eighth mounting portion; The first connecting axis is parallel to the third connecting axis, and the second connecting axis is parallel to the fourth connecting axis, so that the first mounting portion corresponds to the fifth mounting portion, the second mounting portion corresponds to the sixth mounting portion, the third mounting portion corresponds to the fourth mounting portion, and the fourth mounting portion corresponds to the seventh mounting portion.

3. The quasi-constant velocity transmission shaft assembly according to claim 2, characterized in that: The connecting member comprises a connecting ring and a protruding portion; The side walls of the connecting ring along the axial direction are respectively provided with two protrusions; and the two protrusions on one side wall correspond to the first mounting portion and the second mounting portion respectively, and the two protrusions on the other side wall correspond to the fifth mounting portion and the sixth mounting portion respectively.

4. The quasi-constant velocity transmission shaft assembly according to claim 3, characterized in that: The bearing support member includes an inner ball head support that can serve as the first support portion and an outer ball head support that can serve as the second support portion; The bearing passes through the connecting ring and its two ends are respectively connected to the inner ball head support and the outer ball head support; The inner ball head support has a ninth mounting portion corresponding to the third mounting portion and a tenth mounting portion corresponding to the fourth mounting portion; The outer ball head support has an eleventh mounting portion corresponding to the seventh mounting portion and a twelfth mounting portion corresponding to the eighth mounting portion.

5. The quasi-constant velocity transmission shaft assembly according to claim 4, characterized in that: The quasi-constant velocity transmission shaft assembly further includes a sealing component; The sealing component is sleeved on the bearing.

6. The quasi-constant velocity transmission shaft assembly according to claim 5, characterized in that: The sealing component comprises a sealing sleeve and a hoop; The sealing sleeve is sleeved on the bearing through a hoop.

7. The quasi-constant velocity transmission shaft assembly according to claim 6, characterized in that: The sealing sleeve is bent toward the outer ball head support.

8. The quasi-constant velocity transmission shaft assembly according to claim 6, characterized in that: The bearing is a ball bearing.

9. The quasi-constant velocity transmission shaft assembly according to claim 4, characterized in that: The third mounting portion and the ninth mounting portion, the fourth mounting portion and the tenth mounting portion, the seventh mounting portion and the eleventh mounting portion, and the eighth mounting portion and the twelfth mounting portion are all connected by bolts; The first mounting portion, the second mounting portion, the fifth mounting portion, and the sixth mounting portion are respectively connected to the raised portion by bolts.

10. An automobile, characterized in that: A quasi-constant velocity transmission shaft assembly comprising any one of claims 1-9.