CN220581550U - Transmission shaft sheath - Google Patents
Transmission shaft sheath Download PDFInfo
- Publication number
- CN220581550U CN220581550U CN202322130673.6U CN202322130673U CN220581550U CN 220581550 U CN220581550 U CN 220581550U CN 202322130673 U CN202322130673 U CN 202322130673U CN 220581550 U CN220581550 U CN 220581550U
- Authority
- CN
- China
- Prior art keywords
- sheath
- transmission shaft
- shaft sheath
- pressure
- drive shaft
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- 230000005540 biological transmission Effects 0.000 title claims abstract description 65
- 230000006835 compression Effects 0.000 claims description 29
- 238000007906 compression Methods 0.000 claims description 29
- 238000000071 blow moulding Methods 0.000 claims description 7
- 239000004429 Calibre Substances 0.000 claims description 6
- 238000005299 abrasion Methods 0.000 abstract description 5
- 230000002035 prolonged effect Effects 0.000 abstract description 2
- 239000004519 grease Substances 0.000 description 5
- 230000001050 lubricating effect Effects 0.000 description 5
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
Landscapes
- Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)
Abstract
The utility model discloses a transmission shaft sheath, which comprises a large-caliber end connected with a high-speed universal joint, a small-caliber end connected with a transmission shaft and a sheath main body, wherein the sheath main body is provided with a through hole which penetrates through, the axial section of the sheath main body along the transmission shaft sheath is in a corrugated shape, the corrugated shape is provided with a plurality of wave crests and a plurality of wave troughs, a first wave trough near one side of the large-caliber end is formed by a structure formed by two side walls and a bottom wall, the two side walls and the bottom wall encircle to form a deformation space which is open outwards, and the sheath main body is provided with a pressure resisting piece in the deformation space. According to the utility model, the structural strength of the transmission shaft sheath at the first trough is enhanced by arranging the pressure resisting piece in the deformation space so as to resist the pressure from the inside of the transmission shaft sheath, so that the degree that the transmission shaft sheath is spread by the internal pressure at the first trough is effectively reduced, the abrasion of the transmission shaft sheath at the first trough and even at the second trough is reduced, and the service life of a product is prolonged.
Description
[ field of technology ]
The utility model relates to a transmission shaft sheath, in particular to a transmission shaft sheath with a corrugated axial section.
[ background Art ]
With the continuous development of society, vehicles become an integral part of people's lives as vehicles. In a motor vehicle drive train system, a universal joint is an essential component for transmitting torque with an angle between the input and output. The universal joint is a part for realizing variable-angle power transmission, is used for changing the position of the transmission axis direction, and is a joint part of a universal transmission device of an automobile driving system. The universal joint is combined with a drive shaft, known as a universal joint drive. On a front engine rear wheel drive vehicle, a universal joint transmission device is arranged between a transmission and a rear differential; on a front engine four-wheel drive vehicle, a universal joint transmission device is arranged between a transfer case and a front differential and between the transfer case and a rear differential; in a front engine front wheel driven vehicle, the drive shaft is omitted, and the universal joint is mounted between the front axle half shaft and the wheels, which are responsible for both driving and steering. Typically, the rotational speed of the propeller shaft is higher than the rotational speed of the front axle half shaft, and therefore, the universal joint for mating with the propeller shaft is referred to as a high speed universal joint.
Referring to fig. 1, in order to prevent leakage of lubricating grease in a universal joint transmission 200 'and contamination of the lubricating grease by external dust, a boot 100' is generally installed at the junction of a high-speed universal joint 201 'and a transmission shaft 202'. The sheath 100' has a corrugated shape in its axial cross section, the corrugated shape having a plurality of peaks and a plurality of valleys. However, during operation of the vehicle, heat transfer from the vehicle engine and high speed rotation of the high speed universal joint 201' cause high temperatures to be generated within the high speed universal joint 201', the high temperatures cause the portions of the lubricating grease within the high speed universal joint 201', at the torque transfer between the high speed universal joint 201' and the propeller shaft 202', and moving into the sheath 100' to evaporate, and the evaporation of the lubricating grease causes the pressure within the sheath 100' to increase; at the same time, the lubricating grease inside the sheath 100 'generates centrifugal force during high-speed rotation, and also generates outward pressure on the sheath 100'. The internal pressure can prop open the sheath 100 'at the first trough R1' near the side of the high-speed universal joint 201', and at the same time, the second trough R2' loses the original structural form, when the sheath 100 'swings along with the swing of the transmission shaft 202', the abrasion of the sheath 100 'at the first trough R1' and the second trough R2 'is larger, so that the sheath 100' is easy to crack, and the service life of the product is seriously affected.
It is therefore desirable to propose a new solution to at least one of the above mentioned technical problems.
[ utility model ]
The technical problems to be solved by the utility model are as follows: the utility model provides a transmission shaft sheath, its life of product is longer.
In order to solve the technical problems, the utility model adopts the following technical scheme: the utility model provides a transmission shaft sheath, its includes the heavy-calibre end that is connected with a high-speed universal joint, the small-bore end that is connected with a transmission shaft and be located the heavy-calibre end with sheath main part between the small-bore end, sheath main part has the through-hole that runs through, the sheath main part is along the axial cross-section of transmission shaft sheath is the ripple shape, and this ripple shape has a plurality of wave crests and a plurality of trough, and the first trough that is close to heavy-calibre end one side is by the structure formation that two lateral walls and a diapire formed, two lateral walls with the diapire surrounds and forms the deformation space of outside opening, sheath main part is provided with the pressure-resistant piece in the deformation space.
In a preferred embodiment, the transmission shaft sheath is formed by a blow molding process, and the structure formed by the two side walls and the bottom wall is V-shaped along the axial cross section of the transmission shaft sheath.
In a preferred embodiment, the pressure-resistant member is integrally connected to the two side walls, and the pressure-resistant member is integrally connected to the bottom wall.
In a preferred embodiment, the compression member is rib-shaped.
In a preferred embodiment, the compression member has an inverted trapezoid shape along an axial section of the transmission shaft sheath, and has a trapezoid shape along a circumferential section of the transmission shaft sheath.
In a preferred embodiment, the compression member has an outer surface that is lower than adjacent peaks.
In a preferred embodiment, the sheath body is provided with a plurality of pressure-resistant pieces, and the pressure-resistant pieces are equidistantly arranged in the deformation space along the circumferential direction of the transmission shaft sheath.
In a preferred embodiment, the bottom wall has an inner surface, and the bottom wall is recessed from the inner surface corresponding to the pressure-resistant member.
In a preferred embodiment, the compression member has an outer surface and a boss projecting outwardly from the outer surface.
In a preferred embodiment, the projection of the pressure-resistant member is located within the large caliber end along the axial direction of the drive shaft sheath.
Compared with the prior art, the utility model has the following beneficial effects: the structural strength of the transmission shaft sheath at the first trough is enhanced by arranging the pressure-resistant piece in the deformation space so as to resist the pressure from the inside of the transmission shaft sheath, the degree that the transmission shaft sheath is stretched by the internal pressure at the first trough is effectively reduced, and the abrasion of the transmission shaft sheath at the first trough and even at the second trough is reduced, so that the transmission shaft sheath can be effectively prevented from cracking, and the service life of a product is prolonged.
[ description of the drawings ]
Fig. 1 is a cross-sectional view of a prior art drive shaft boot mounted to a universal joint drive, in an inactive state, and including a partial enlarged view.
Fig. 2 is a cross-sectional view of a prior art drive shaft boot as installed in a universal joint drive, in operation, and including a partial enlarged view.
Fig. 3 is a perspective view of a propeller shaft sheath according to a preferred embodiment of the present utility model, including a partially enlarged view.
Fig. 4 is an axial cross-sectional view of the drive shaft jacket of fig. 3, without the pressure resistant member.
Fig. 5 is an enlarged view of a portion of the drive shaft sheath of fig. 4.
Fig. 6 is another axial cross-sectional view of the drive shaft sheath of fig. 3, through the compression resistor.
Fig. 7 is an enlarged view of a portion of the drive shaft sheath of fig. 6.
Fig. 8 is a circumferential cross-sectional view of the drive shaft jacket of fig. 3, through the compression resistor.
Fig. 9 is a cross-sectional view of the drive shaft boot of fig. 3 mounted to a universal joint drive, shown in an inactive state, and including a partial enlarged view.
[ detailed description ] of the utility model
The technical solutions of the embodiments of the present utility model will be explained and illustrated below with reference to the drawings of the embodiments of the present utility model, but the following embodiments are only preferred embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, other embodiments that may be obtained by those skilled in the art without making any inventive effort are within the scope of the present utility model.
Referring to fig. 3 and 9, the present utility model provides a drive shaft boot 100 for dust and oil leakage protection of a universal joint drive 200. The universal joint transmission 200 includes a high speed universal joint 201 and a propeller shaft 202 that cooperate with each other. The transmission shaft sheath 100 includes a large caliber end 1 connected with the high speed universal joint 201, a small caliber end 2 connected with the transmission shaft 202, and a sheath body 3 positioned between the large caliber end 1 and the small caliber end 2. The transmission shaft sheath 100 is connected to the high-speed universal joint 201 at the large-caliber end 1 through a clamp 300, and is connected to the transmission shaft 202 at the small-caliber end 2 through another clamp 400. The sheath body 3 has a through hole 30 penetrating therethrough, the through hole 30 passing through the large caliber end 1 and the small caliber end 2 in the axial direction of the transmission shaft sheath 100. Referring to fig. 4, the drive shaft sheath 100 is preferably formed by a blow molding process. The sheath body 3 has a corrugated shape having a plurality of peaks P1, P2, P3, P4, P5, P6 and a plurality of valleys R1, R2, R3, R4, R5, R6 along an axial cross section of the transmission shaft sheath 100.
Referring to fig. 3, 4, 5 and 9, the first trough R1 near the side of the large diameter end 1 is formed by a structure formed by two side walls 31, 32 and a bottom wall 33. The structure formed by the two side walls 31, 32 and the bottom wall 33 is preferably V-shaped in axial section along the drive shaft sheath 100. The two side walls 31, 32 and the bottom wall 33 enclose a deformation space 34 which is open outwards. The deformation space 34 is internally provided with the compression resistant piece 4, and the structural strength of the transmission shaft sheath 100 at the first trough P1 is enhanced by arranging the compression resistant piece 4 in the deformation space 34 so as to resist the pressure from the inside of the transmission shaft sheath 100, so that the degree that the transmission shaft sheath 100 is spread by the internal pressure at the first trough P1 is effectively reduced, the abrasion of the transmission shaft sheath 100 at the first trough P1 and even at the second trough P2 is reduced, and the transmission shaft sheath 100 can be effectively prevented from being cracked, thereby being beneficial to prolonging the service life of products. Further, the sheath main body 3 is provided with a plurality of compression-resistant pieces 4, and the compression-resistant pieces 4 are equidistantly arranged in the deformation space 34 along the circumferential direction of the transmission shaft sheath 100, so that the symmetry of the structure of the transmission shaft sheath 100 and the realization of the functions thereof can be ensured while the compression resistance of the transmission shaft sheath 100 is improved.
Referring to fig. 6 to 8, the compression member 4 is integrally connected to the two side walls 31 and 32, and may be integrally formed by, for example, a blow molding process, so that a triangular supporting structure may be formed with the two side walls 31 and 32 and the bottom wall 33, so as to effectively resist the pressure in the transmission shaft sheath 100. Of course, in other embodiments, the pressure-resistant element 4 may also be connected to the two side walls 31, 32 by means of a mechanical connection. The pressure-resistant element 4 is also integrally connected to the bottom wall 33, which facilitates the production of the product, for example the implementation of a blow-moulding process.
Referring to fig. 3, the compression-resisting member 4 is rib-shaped, so that the compression-resisting member 4 is not too thick in the circumferential direction of the transmission shaft sheath 100, and thus, a cavity can be prevented from being formed in the product, and the compression-resisting capability of the product is affected. Referring to fig. 7 and 8, the compression-resistant member 4 is in an inverted trapezoid along the axial section of the transmission shaft sheath 100, and the compression-resistant member 4 is in a trapezoid along the circumferential section of the transmission shaft sheath 100, so that the compression-resistant effect of the compression-resistant member 4 can be effectively ensured.
Referring to fig. 6 to 8, the bottom wall 33 has an inner surface 331, and the bottom wall 33 is recessed from the inner surface 331 to form a recess 332 corresponding to the pressure-resistant member 4. The compression-resistant member 4 can be made to have a sufficient radial thickness to satisfy the compression-resistant requirement by forming the concave portion 332 during blow molding. Referring to fig. 3 in combination, the compression member 4 has an outer surface 41, the outer surface 41 is lower than the adjacent peaks P1, where adjacent refers to the peaks on two adjacent sides, but if there is a peak on only one side, it refers to the peak on one side, so that on one hand, the radial thickness of the compression member 4 is not too large, otherwise, during the blow molding process, the compression member 4 is prone to form a cavity, and it is difficult to achieve the best compression effect; on the other hand, it is ensured that the transmission shaft sheath 100 has a certain axial deformation at the pressure-resistant member 4, so that the abrasion to the pressure-resistant member 4 during operation is reduced. It is preferable that the height of the pressure-resistant member 4 in the deformation space 34 is approximately half of the deformation space 34. Further, the projection of the pressure-resistant member 4 is located in the large-caliber end 1 along the axial direction of the transmission shaft sheath 100, so that the axial deformation of the transmission shaft sheath 100 at the pressure-resistant member 4 is also facilitated.
Referring to fig. 3 and 7, the pressure-resistant member 4 has a boss 42 protruding outwardly from the outer surface 41. The boss 42 is formed corresponding to a mold vent hole, and the boss 42 prevents the compression member 4 from directly rubbing with other components when the driving shaft 202 swings too much.
It will be appreciated that the above embodiments of the utility model can be combined with each other to obtain further embodiments without conflict. The individual technical features described in the above embodiments may be combined in any suitable manner without contradiction.
In the description of the present utility model, it should be understood that the terms "center," "upper," "lower," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of the utility model and simplify the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the utility model. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present utility model, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.
In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.
Claims (10)
1. The utility model provides a transmission shaft sheath, its includes the heavy-calibre end that is connected with a high-speed universal joint, the small-bore end that is connected with a transmission shaft and be located the heavy-calibre end with sheath main part between the small-bore end, sheath main part has the through-hole that runs through, sheath main part is followed the axial cross-section of transmission shaft sheath is the ripple shape, and this ripple shape has a plurality of crests and a plurality of trough, is close to the first trough system of heavy-calibre end one side is formed by the structure that two lateral walls and a diapire formed, two lateral walls with the diapire surrounds and forms outside open-ended deformation space, its characterized in that: the sheath body is provided with a pressure-resistant member in the deformation space.
2. The drive shaft sheath of claim 1, wherein: the transmission shaft sheath is formed by a blow molding process, and the structure formed by the two side walls and the bottom wall is V-shaped along the axial section of the transmission shaft sheath.
3. A drive shaft sheath according to claim 1 or 2, wherein: the compression-resistant piece is integrally connected with the two side walls, and the compression-resistant piece is integrally connected with the bottom wall.
4. A drive shaft sheath according to claim 1 or 2, wherein: the pressure-resistant piece is rib-shaped.
5. A drive shaft sheath according to claim 1 or 2, wherein: the compression-resistant piece is in an inverted trapezoid along the axial section of the transmission shaft sheath, and the compression-resistant piece is in a trapezoid along the circumferential section of the transmission shaft sheath.
6. A drive shaft sheath according to claim 1 or 2, wherein: the compression member has an outer surface that is lower than adjacent peaks.
7. A drive shaft sheath according to claim 1 or 2, wherein: the sheath main body is provided with a plurality of pressure-resistant pieces, and a plurality of pressure-resistant pieces are arranged at intervals in the deformation space along the circumferential direction of the transmission shaft sheath at equal intervals.
8. A drive shaft sheath according to claim 1 or 2, wherein: the bottom wall has an inner surface, and the bottom wall is concave from the inner surface corresponding to the pressure-resistant member to form a concave portion.
9. A drive shaft sheath according to claim 1 or 2, wherein: the compression member has an outer surface and a boss projecting outwardly from the outer surface.
10. A drive shaft sheath according to claim 1 or 2, wherein: and along the axial direction of the transmission shaft sheath, the projection of the pressure resisting piece is positioned in the large-caliber end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322130673.6U CN220581550U (en) | 2023-08-09 | 2023-08-09 | Transmission shaft sheath |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322130673.6U CN220581550U (en) | 2023-08-09 | 2023-08-09 | Transmission shaft sheath |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220581550U true CN220581550U (en) | 2024-03-12 |
Family
ID=90108682
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322130673.6U Active CN220581550U (en) | 2023-08-09 | 2023-08-09 | Transmission shaft sheath |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220581550U (en) |
-
2023
- 2023-08-09 CN CN202322130673.6U patent/CN220581550U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |