Anti-loose half shaft structure and vehicle

Abstract

The utility model relates to vehicle transmission technical field especially, relates to a kind of anti-loosening half shaft structure and vehicle, anti-loosening half shaft structure includes transmission shaft, its end portion is inserted in transmission case, the end portion of transmission shaft is arranged in half shaft gear;Positioning assembly is installed in the end portion of transmission shaft;Baffle piece, the first end of baffle piece is pivotably installed in positioning assembly;And elastic member, it is installed in positioning assembly, and the second end of baffle piece is connected with elastic member;Under the condition that transmission shaft rotates, baffle piece pivots to unfolded state under the action of centrifugal force, the edge diameter of baffle piece is greater than the inner diameter of half shaft gear;Under the condition that transmission shaft stops rotating, baffle piece pivots to fold state under the action of elastic member, and the edge diameter of baffle piece is less than the inner diameter of half shaft gear.The anti-loosening half shaft structure and vehicle can solve the problem of how to prevent vehicle from half shaft loosening phenomenon.

Description

Technical Field

[0001] This application relates to the field of vehicle transmission technology, and in particular to an anti-loosening half-shaft structure and vehicle. Background Technology

[0002] With the continuous growth of car ownership, the number of vehicles on the road has increased significantly. During the use of cars, the phenomenon of half-shaft loosening due to collisions or mechanical failures is becoming increasingly frequent, posing a serious threat to driving safety.

[0003] In automotive transmission systems, the driveshaft extends into the transmission housing and passes through a half-shaft gear mounted within the housing. Currently, the industry commonly uses a retaining ring at the front of the driveshaft to prevent it from disengaging from the half-shaft gear. However, this solution still has significant drawbacks. When the vehicle is running, the retaining ring will move irregularly around the axis of the driveshaft as it rotates. Once the retaining ring shifts to the center position, there is still a risk that the driveshaft will disengage from the half-shaft gear. Utility Model Content

[0004] In view of this, the purpose of this application is to provide an anti-loosening half-shaft structure and vehicle to solve the problem of how to prevent the half-shaft from becoming loose in a vehicle.

[0005] According to a first aspect of this utility model, an anti-loosening half-shaft structure is provided, wherein the anti-loosening half-shaft structure includes: a drive shaft, the end of which is inserted into the transmission box, and the end of the drive shaft passes through the half-shaft gear; a positioning assembly installed at the end of the drive shaft; a baffle member, the first end of which is pivotally mounted to the positioning assembly; and an elastic member installed on the positioning assembly, the elastic member being connected to the second end of the baffle member; when the drive shaft rotates, the baffle member pivots to an unfolded state under the action of centrifugal force, and the edge diameter of the baffle member is larger than the inner diameter of the half-shaft gear; when the drive shaft stops rotating, the baffle member pivots to a folded state under the action of the elastic member, and the edge diameter of the baffle member is smaller than the inner diameter of the half-shaft gear.

[0006] Preferably, the positioning assembly includes: a locking stud, axially mounted on the end of the drive shaft, a baffle disposed between the locking stud and the end of the drive shaft, and an elastic element mounted on the locking stud; and a positioning bolt, axially mounted on the end of the drive shaft, the positioning bolt passing through the first end of the locking stud and the baffle, the baffle pivoting about the axis of the positioning bolt.

[0007] Preferably, the locking stud includes: a cap portion, with a baffle disposed between the cap portion and the end of the drive shaft, and the positioning bolt passing through the cap portion; a boss portion connected to the cap portion, the boss portion being sandwiched between the cap portion and the end of the drive shaft, the baffle disposed on the outer periphery of the boss portion, and the elastic element disposed on the boss portion; and a screw portion connected to the boss portion, the end of the drive shaft being provided with a central threaded hole extending axially, and the screw portion being threadedly connected to the central threaded hole.

[0008] Preferably, the first end of the positioning bolt is threaded, the second end of the positioning bolt is a smooth rod structure, the end of the drive shaft is provided with a peripheral threaded hole extending axially, the first end of the positioning bolt is threadedly connected to the peripheral threaded hole, and the baffle piece pivots around the second end of the positioning bolt.

[0009] Preferably, the number of positioning bolts is several, the number of peripheral screw holes and the number of baffles are equal to the number of positioning bolts, and the cap of the locking stud is provided with multiple through holes extending axially, the number of through holes being greater than the number of positioning bolts.

[0010] Preferably, the positioning component further includes a rotating pin, which is sleeved on the second end of the positioning bolt and passes through the shaft hole at the first end of the baffle.

[0011] Preferably, the two ends of the rotating pin protrude from the baffle member in the axial direction, a first annular countersunk is provided on the cap of the locking stud, a second annular countersunk is provided at the peripheral screw hole, and the two ends of the rotating pin are respectively inserted into the first annular countersunk and the second annular countersunk.

[0012] Preferably, the baffle extends in an arc shape, and a clearance portion is provided at the second end of the baffle, the clearance portion being recessed into the baffle.

[0013] Preferably, the elastic element is a spring, and the elastic element is connected to the clearance portion of the baffle.

[0014] According to a second aspect of the present invention, a vehicle is provided, wherein the vehicle includes the anti-loosening half-shaft structure as described above.

[0015] This utility model discloses an anti-loosening half-shaft structure and vehicle, in which the end of the drive shaft is inserted into the transmission box and passes through the half-shaft gear. A positioning assembly is installed at the end of the drive shaft. The first end of a baffle is pivotally mounted to the positioning assembly. An elastic member is installed on the positioning assembly and is connected to the second end of the baffle. With this configuration, when the drive shaft rotates, the baffle can pivot to an unfolded state under centrifugal force, making the edge diameter of the baffle larger than the inner diameter of the half-shaft gear, thus preventing the end of the drive shaft from dislodging from the half-shaft gear. When the drive shaft stops rotating, the baffle pivots to a folded state under the action of the elastic member, at which point the edge diameter of the baffle is smaller than the inner diameter of the half-shaft gear, making it easy for the operator to remove the drive shaft as needed. This effectively solves the problem of preventing half-shaft loosening in vehicles.

[0016] To make the above-mentioned objectives, features and advantages of this application more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is an exploded view of the anti-loosening half-shaft structure according to this utility model.

[0019] Figure 2 This is a schematic diagram of the baffle component of the anti-loosening half-shaft structure according to this utility model in the unfolded state.

[0020] Figure 3 This is a schematic diagram of the baffle component of the anti-loosening half-shaft structure according to this utility model in the folded state.

[0021] Reference numerals: 1-Drive shaft; 11-Central screw hole; 12-Peripheral screw hole; 13-Spline; 2-Positioning assembly; 21-Locking stud; 210-Through hole; 211-Cap; 212-Boss; 213-Screw; 22-Positioning bolt; 23-Rotating pin; 3-Baffle; 30-Shaft hole; 31-Allowing part; 4-Elastic element; 5-Transmission box; 51-Half-shaft gear. Detailed Implementation

[0022] The following detailed embodiments are provided to help the reader gain a comprehensive understanding of the methods, apparatus, and / or systems described herein. However, various changes, modifications, and equivalents of the methods, apparatus, and / or systems described herein will be apparent after understanding the disclosure of this application. For example, the order of operations described herein is merely illustrative and is not limited to the order set forth herein; changes that will be apparent after understanding the disclosure of this application are possible, except for operations that must occur in a specific order. Furthermore, for clarity and brevity, descriptions of features known in the art may be omitted.

[0023] The features described herein may be implemented in different forms and should not be construed as being limited to the examples described herein. Rather, the examples described herein have been provided merely to illustrate some of the many feasible ways of implementing the methods, apparatus, and / or systems described herein that will be apparent upon understanding the disclosure of this application.

[0024] Throughout the specification, when an element (such as a layer, region, or substrate) is described as being "on" another element, "connected to" another element, "bonded to" another element, "on" another element, or "covering" another element, it may be directly "on" another element, "connected to" another element, "bonded to" another element, "on" another element, or "covering" another element, or there may be one or more other elements in between. In contrast, when an element is described as being "directly on" another element, "directly connected to" another element, "directly bonded to" another element, "directly on" another element, or "directly covering" another element, there may be no other elements in between.

[0025] As used herein, the term “and / or” includes any one of the relevant items listed and any combination of any two or more items.

[0026] Although terms such as “first,” “second,” and “third” may be used herein to describe individual components, assemblies, regions, layers, or parts, these components, assemblies, regions, layers, or parts are not limited by these terms. Rather, these terms are used only to distinguish one component, assembly, region, layer, or part from another. Therefore, without departing from the teachings of the examples described herein, the first component, assembly, region, layer, or part referred to as the second component, assembly, region, layer, or part may also be referred to as the second component, assembly, region, layer, or part.

[0027] For ease of description, spatial relation terms such as “above,” “upper,” “below,” and “lower” are used herein to describe the relationship between one element and another, as shown in the accompanying drawings. Such spatial relation terms are intended to include not only the orientation depicted in the drawings but also different orientations of the device during use or operation. For example, if the device in the drawings is flipped, an element described as being “above” or “upper” relative to another element will subsequently be “below” or “lower” relative to that 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 relation terms used herein will be interpreted accordingly.

[0028] The terminology used herein is for the purpose of describing various examples only and is not intended to limit the examples. Unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. The terms “comprising,” “including,” and “having” enumerate the stated features, quantities, operations, components, elements, and / or combinations thereof, but do not exclude the presence or addition of one or more other features, quantities, operations, components, elements, and / or combinations thereof.

[0029] Variations in the shapes shown in the accompanying 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 accompanying drawings, but include changes in shape that may occur during manufacturing.

[0030] The features of the examples described herein can be combined in various ways that will be apparent upon understanding the disclosure of this application. Furthermore, although the examples described herein have a wide variety of constructions, other constructions are possible, as will be apparent upon understanding the disclosure of this application.

[0031] like Figures 1 to 3 As shown, according to the first aspect of the present invention, an anti-loosening half-shaft structure is provided, which includes a transmission shaft 1, a positioning component 2, a baffle 3, and an elastic component 4.

[0032] In the following description, reference will be made to Figures 1 to 3 The specific structure of the aforementioned components and their connection relationships in the anti-loosening half-shaft structure are described in detail.

[0033] like Figures 1 to 3As shown, in this embodiment, the end of the drive shaft 1 can be inserted into the transmission housing 5 and pass through the half-shaft gear 51. The positioning assembly 2 can be installed at the end of the drive shaft 1. The first end of the baffle 3 is pivotally mounted to the positioning assembly 2. The elastic member 4 can be connected to the positioning assembly 2, and simultaneously connected to the second end of the baffle 3. With this configuration, when the drive shaft 1 rotates, the baffle 3 can pivot to an unfolded state under centrifugal force, making the edge diameter of the baffle 3 larger than the inner diameter of the half-shaft gear 51, thus preventing the end of the drive shaft 1 from dislodging from the half-shaft gear 51. When the drive shaft 1 stops rotating, the baffle 3 can pivot to a folded state under the action of the elastic member 4. At this time, the edge diameter of the baffle 3 is smaller than the inner diameter of the half-shaft gear 51, making it easier for the operator to remove the drive shaft 1 as needed.

[0034] Preferred, such as Figures 1 to 3 As shown, in this embodiment, the positioning component 2 may include a locking stud 21 and a positioning bolt 22. The locking stud 21 may be axially mounted to the end of the drive shaft 1 (i.e., the locking stud 21 is mounted on the axial end face of the drive shaft 1). A baffle 3 may be disposed between the locking stud 21 and the end of the drive shaft 1. An elastic member 4 may be fixedly mounted to the locking stud 21. The positioning bolt 22 may be axially mounted to the end of the drive shaft 1 (i.e., the positioning bolt 22 is also mounted on the axial end face of the drive shaft 1). The positioning bolt 22 passes through the first end of the locking stud 21 and the baffle 3, forming a pivot for the baffle 3, allowing the baffle 3 to pivot about the axis of the positioning bolt 22.

[0035] Furthermore, preferably, such as Figures 1 to 3 As shown, in this embodiment, the locking stud 21 can be coaxially arranged with the drive shaft 1. The locking stud 21 may include a cap 211, a boss 212, and a screw 213. The cap 211 can be formed as a circular plate. A baffle 3 can be clamped between the cap 211 and the end of the drive shaft 1. The positioning bolt 22 passes through and connects the cap 211 and the end of the drive shaft 1. The boss 212 is formed on the side of the cap 211 near the end of the drive shaft 1. The boss 212 can be formed as a cylindrical boss. The boss 212 is clamped between the cap 211 and the end of the drive shaft 1. The baffle 3 can be disposed on the outer periphery of the boss 212. An elastic member 4 can be connected to the circumferential surface of the boss 212. The screw 213 is disposed on the side of the boss 212 near the end of the drive shaft 1. The end of the drive shaft 1 may be provided with a central threaded hole 11 extending axially. The screw 213 may be threadedly connected to the central threaded hole 11, thereby fixing the locking stud 21 to the drive shaft 1.

[0036] Preferably, the cap 211, the boss 212, and the screw 213 can be integrally formed and arranged coaxially. A hexagonal countersunk edge can also be provided on the side of the cap 211 away from the drive shaft 1 to facilitate tightening with an Allen wrench. The locking stud 21 can be made of high-strength threaded steel and tightened using a cornering method to ensure that the locking stud 21 is coaxial with the central screw hole 11 within the tightening force range. A fastening adhesive can also be provided between the locking stud 21 and the central screw hole 11 to ensure the connection strength between the locking stud 21 and the drive shaft 1.

[0037] Further optimized, such as Figures 1 to 3 As shown, in this embodiment, the first end of the positioning bolt 22 may be threaded, and the second end of the positioning bolt 22 may be a smooth rod structure. The end of the drive shaft 1 may also have a peripheral threaded hole 12 extending axially. The first end of the positioning bolt 22 may be threaded into the peripheral threaded hole 12, thereby fixing the positioning bolt 22 to the end of the drive shaft 1. The first end of the baffle 3 may pivot around the second end of the positioning bolt 22 to reduce resistance during rotation.

[0038] Preferred, such as Figures 1 to 3 As shown, in this embodiment, the number of positioning bolts 22 can be several. The number of peripheral screw holes 12 and the number of baffle members 3 can be equal to the number of positioning bolts 22, so that the positioning bolts 22, baffle members 3, and peripheral screw holes 12 can be correspondingly set. Specifically, as shown... Figure 1 As shown in the embodiment, the number of positioning bolts 22 can be four. In this case, the number of baffle members 3 is also four, and the four baffle members 3 can be evenly arranged on the outer periphery of the boss portion 212. The number of peripheral screw holes 12 can also be four, and the four peripheral screw holes 12 can be evenly arranged on the outer periphery of the central screw hole 11. Correspondingly, a plurality of axially extending through holes 210 can be provided on the cap portion 211 of the locking stud 21 for the positioning bolts 22 to pass through. The number of through holes 210 can be greater than the number of positioning bolts 22, so that after the locking bolt is tightened, the position of its through hole 210 can correspond to the position of the peripheral screw hole 12, making it easy for the operator to install the positioning bolt 22.

[0039] Preferred, such as Figures 1 to 3 As shown, in this embodiment, the baffle member 3 can extend in an arc shape, so that the baffle member 3 is formed as an arc-shaped plate. Specifically, as... Figure 1 As shown, the baffle member 3 can extend into a 1 / 4 circular arc. Further, preferably, the second end of the baffle member 3 may also be provided with a relief portion 31, which is located on the side of the baffle member 3 near the boss portion 212. The relief portion 31 is recessed into the baffle member 3 to accommodate the installation of the elastic member 4.

[0040] Further optimized, such as Figure 1 As shown, in this embodiment, the elastic element 4 can be a spring. One end of the elastic element 4 can be welded to the outer periphery of the boss portion 212, and the other end of the elastic element 4 can be welded to the clearance portion 31 of the baffle member 3. This allows the baffle member 3 to accommodate the elastic element 4 between the baffle member 3 and the boss portion 212 when it is pivoted to the folded state.

[0041] In addition, preferred, such as Figure 1 As shown, in this embodiment, the positioning component 2 may further include a rotating pin 23. The rotating pin 23 may be cylindrical. The rotating pin 23 may be sleeved on the second end of the positioning bolt 22 (i.e., sleeved on the smooth rod structure of the positioning bolt 22). Simultaneously, the rotating pin 23 passes through the shaft hole 30 at the first end of the baffle member 3, such that the rotating pin 23 is located between the positioning bolt 22 and the baffle member 3, thereby further reducing the resistance experienced by the baffle member 3 during pivoting.

[0042] Furthermore, preferably, such as Figure 1 As shown, in this embodiment, the thickness of the baffle 3 can be less than the axial length of the rotating pin 23, allowing both ends of the rotating pin 23 to protrude beyond the baffle 3. More preferably, a first annular countersunk (not shown) can be provided on the cap 211 of the locking stud 21. Specifically, the first annular countersunk can be located at the end of the through hole 210 near the drive shaft 1. A second annular countersunk (not shown) can be provided at the peripheral screw hole 12. Both ends of the rotating pin 23 can be inserted into the first and second annular countersunks respectively, thereby axially positioning the rotating pin 23.

[0043] Furthermore, according to a second aspect of the present invention, a vehicle is provided, the vehicle including the anti-loosening half-shaft structure as described above.

[0044] During installation, first, the elastic element 4 is installed on the boss portion 212 of the locking stud 21. Then, the rotating pin 23 is passed through the shaft hole 30 of the baffle 3, and one end of the rotating pin 23 is inserted into the first annular recess. Next, the second end of the baffle 3 is fixed to the elastic element 4, and then the locking stud 21 is screwed into the central threaded hole 11 of the drive shaft 1. During the screwing process, attention should be paid to the tightening speed to ensure that the end of the rotating pin 23 can be inserted into the second annular recess. Finally, the positioning bolt 22 is installed, so that the positioning bolt 22 passes through the through hole 210 of the locking stud 21 and the rotating pin 23, and is threadedly connected to the peripheral threaded hole 12 of the drive shaft 1. After installation, the baffle 3 can pivot around the axis of the positioning bolt 22 and can be reset under the action of the elastic element 4. When the drive shaft 1 rotates, the baffle 3 can pivot to an unfolded state under centrifugal force (i.e., the second end of the baffle 3 pivots to overlap with the half-shaft gear 51), making the edge diameter of the baffle 3 (i.e., the diameter of the circular trajectory formed by the edge of the baffle 3 away from the axis during rotation) larger than the inner diameter of the half-shaft gear 51. The end of the drive shaft 1 can be provided with a spline 13, and the half-shaft gear 51 can be connected to the drive shaft 1 via the spline 13. In this case, the edge diameter of the baffle 3 is larger than the minor diameter of the spline 13 of the drive shaft 1 (i.e., the diameter of the groove bottom of the spline 13) to prevent the end of the drive shaft 1 from disengaging from the half-shaft gear 51. When the drive shaft 1 stops rotating, the baffle 3 can pivot to a folded state under the action of the elastic member 4 (i.e., the second end of the baffle 3 pivots to the position closest to the locking stud 21). At this time, the edge diameter of the baffle 3 is smaller than the inner diameter of the half-shaft gear 51, making it easier for the operator to remove the drive shaft 1 as needed. Therefore, the anti-loosening half-shaft structure effectively prevents the half-shaft from becoming loose while ensuring easy disassembly and assembly.

[0045] Finally, it should be noted that the above-described embodiments are merely specific implementations of this application, used to illustrate the technical solutions of this application, and not to limit them. The scope of protection of this application is not limited thereto. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that any person skilled in the art can still modify or easily conceive of changes to the technical solutions described in the foregoing embodiments, or make equivalent substitutions for some of the technical features, within the scope of the technology disclosed in this application. Such modifications, changes, or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application, and should all be covered within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A non-loosening half-shaft structure, disposed in a transmission box, wherein a half-shaft gear is installed inside the transmission box, characterized in that, The anti-loosening half-shaft structure includes: A drive shaft, the end of which is inserted into the transmission box, and the end of the drive shaft passes through the half-shaft gear; A positioning component is installed at the end of the drive shaft; A baffle member, the first end of which is pivotally mounted to the positioning assembly; and An elastic element is installed on the positioning assembly, and the elastic element is connected to the second end of the baffle member; When the drive shaft rotates, the baffle piece pivots to the unfolded state under the action of centrifugal force, and the edge diameter of the baffle piece is larger than the inner diameter of the half-shaft gear; When the drive shaft stops rotating, the baffle piece pivots to a folded state under the action of the elastic member, and the edge diameter of the baffle piece is smaller than the inner diameter of the half-shaft gear.

2. The anti-loosening half-shaft structure according to claim 1, characterized in that, The positioning component includes: A locking stud is axially mounted to the end of the drive shaft; a baffle is disposed between the locking stud and the end of the drive shaft; and an elastic element is mounted to the locking stud. A positioning bolt is installed axially at the end of the drive shaft. The positioning bolt passes through the locking stud and the first end of the baffle member, and the baffle member pivots about the axis of the positioning bolt.

3. The anti-loosening half-shaft structure according to claim 2, characterized in that, The locking stud includes: The cap portion, wherein the baffle is disposed between the cap portion and the end of the drive shaft, and the positioning bolt passes through the cap portion; A boss portion, connected to the cap portion, is sandwiched between the cap portion and the end of the drive shaft; a baffle member is disposed on the outer periphery of the boss portion; and an elastic member is disposed on the boss portion; and The screw portion is connected to the boss portion, and the end of the drive shaft is provided with a central screw hole extending axially, and the screw portion is threadedly connected to the central screw hole.

4. The anti-loosening half-shaft structure according to claim 3, characterized in that, The first end of the positioning bolt is threaded, the second end of the positioning bolt is a smooth rod structure, the end of the drive shaft is provided with a peripheral threaded hole extending axially, the first end of the positioning bolt is threadedly connected to the peripheral threaded hole, and the baffle piece pivots around the second end of the positioning bolt.

5. The anti-loosening half-shaft structure according to claim 4, characterized in that, The number of positioning bolts is several, the number of peripheral screw holes and the number of baffles are equal to the number of positioning bolts, and the cap of the locking stud has multiple through holes extending axially, the number of which is greater than the number of positioning bolts.

6. The anti-loosening half-shaft structure according to claim 4, characterized in that, The positioning component also includes a rotating pin, which is sleeved on the second end of the positioning bolt and passes through the shaft hole at the first end of the baffle.

7. The anti-loosening half-shaft structure according to claim 6, characterized in that, The two ends of the rotating pin protrude from the baffle member in the axial direction. A first annular countersunk is provided on the cap of the locking stud, and a second annular countersunk is provided at the peripheral screw hole. The two ends of the rotating pin are respectively inserted into the first annular countersunk and the second annular countersunk.

8. The anti-loosening half-shaft structure according to claim 1, characterized in that, The baffle extends in an arc shape, and a clearance portion is provided at the second end of the baffle, which is recessed into the baffle.

9. The anti-loosening half-shaft structure according to claim 8, characterized in that, The elastic element is a spring, and the elastic element is connected to the clearance part of the baffle.

10. A vehicle, characterized in that, The vehicle includes the anti-loosening half-shaft structure as described in any one of claims 1 to 9.

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