CN201849317U - Driving shaft assembly - Google Patents
Driving shaft assembly Download PDFInfo
- Publication number
- CN201849317U CN201849317U CN2010201597055U CN201020159705U CN201849317U CN 201849317 U CN201849317 U CN 201849317U CN 2010201597055 U CN2010201597055 U CN 2010201597055U CN 201020159705 U CN201020159705 U CN 201020159705U CN 201849317 U CN201849317 U CN 201849317U
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- CN
- China
- Prior art keywords
- transmission roller
- roller section
- joint
- hooke
- bearing
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- 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.)
- Expired - Lifetime
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Abstract
The utility model discloses a driving shaft assembly which comprises a driving shaft formed by connecting at least two driving shaft subsections in sequence, and an intermediate bearing used for supporting one driving shaft subsection of the at least two driving shaft sections; and the driving shaft assembly also comprises an intermediate bearing outer ring, a bearing and an intermediate rubber bearing arranged between the intermediate bearing outer ring and the bearing. When the intermediate bearing is not assembled with the driving shaft subsection supported by the intermediate bearing, the center of the bearing outer ring is lower than that of the bearing; and after the driving shaft assembly is assembled with a speed changing box and a driving axle, the center of the bearing is lowered to be superposed with the center of the bearing outer ring under action of gravity of the driving shaft. The driving shaft assembly has the following advantages: after the driving shaft is installed in place, the axis of the driving shaft and the center of the intermediate bearing are positioned at the same point, so that the mounting accuracy of the driving shaft and the rotating steadiness of the driving shaft in the traveling process of vehicles can be improved, and the service life of the intermediate bearing can be prolonged.
Description
Technical field
The utility model relates to automobile technical field, more particularly, relates to a kind of driving-shaft assembly.
Background technology
In some cases, the transmission shaft of automobile need be taked segmentation structure.For example, in the automobile of engine behind front wheel back-wheel drive, it is longer with the driving-shaft assembly normal length of drive axle to connect change-speed box, thereby often needs transmission shaft is carried out segmentation, and soon transmission shaft is divided into two sections or multistage more.Under situation, need between two transmission shafts, to install center support additional, to provide supplemental support to driving-shaft assembly to the transmission shaft segmentation.
As shown in Figure 1, traditional driving-shaft assembly comprises bonded assembly spline fork 1, Hooke's joint 2, tween drive spindle 3, joint yoke 5, Hooke's joint 6, main driving axle 7, Hooke's joint 8 and flanged yoke 9 successively.Further, described driving-shaft assembly also comprises center support 4 '.Center support 4 ' comprises bearing, rubber bearing and outer ring.Before unassembled, described bearing, rubber bearing, outer ring are in concentric.Thereby, be assembled on the transmission shaft at center support 4 ', and after further being assembled on vehicle body or the vehicle frame, because center support 4 ' provides aiding support to driving-shaft assembly, a part of weight of supporting shaft supporting, so center support 4 ' is subjected to downward pressure, thereby make the distortion of elastic component rubber bearing.The distortion of rubber bearing causes the center of described bearing to move down, thereby makes center (being the center of rubber bearing or the outer ring) decentraction in transmission shaft axle center (being bearing center) and center support after the assembling.
Decentraction state after this kind installation causes the installation of transmission shaft angle direction to produce error, influences the stability of rotation of transmission shaft in the vehicle ' process, and causes the center support life-span to be reduced.So, the decentraction state after wishing have a kind of later-model driving-shaft assembly to alleviate even eliminating this kind installation.
The utility model content
Decentraction state after the purpose of this utility model is to provide a kind of later-model driving-shaft assembly to alleviate even eliminates this kind installation, improve the transmission shaft setting accuracy, improve the stability of rotation that influences transmission shaft in the vehicle ' process, and prolong the work life of center support.
For achieving the above object, comprise according to driving-shaft assembly of the present utility model: the transmission shaft that is connected in sequence by at least two transmission roller sections, described at least two transmission roller sections comprise the first transmission roller section and the second transmission roller section, wherein, the described first transmission roller section is suitable for being connected with change speed gear box, and the described second transmission roller section is suitable for being connected with drive axle; And center support, it is used for a transmission roller section of described at least two transmission roller sections is provided support, and comprise center support outer ring, bearing and be arranged on described center support outer ring and described bearing between the rubber center support, wherein, described supporting outer ring is suitable for being connected with body bottom panel or vehicle frame, and described bearing matches with a described transmission roller section that is supported.When described center support is not assembled together with a described transmission roller section that is supported, the center of described supporting outer ring is lower than the center of described bearing, and after described driving-shaft assembly and described change speed gear box and drive axle are assembled together, under the effect of described transmission shaft gravity, the center of described bearing drops to the center of described supporting outer ring and overlaps.
Driving-shaft assembly of the present utility model makes: after transmission shaft is in place, the center of transmission shaft axle center and center support can be in concentric, thereby improve the transmission shaft setting accuracy, improve the stability of rotation that influences transmission shaft in the vehicle ' process, and prolong the work life of center support.Preferably, the quantity of described transmission roller section is two, the described first transmission roller section is suitable for being connected with described change speed gear box in the spline mode, the described second transmission roller section is suitable for being connected with described drive axle with form of flanges, and described center support provides support the described first transmission roller section.Further preferably, described driving-shaft assembly further comprises: the spline fork and first Hooke's joint, and described first Hooke's joint is connected to the described first transmission roller section with described spline fork; The flanged yoke and second Hooke's joint, described second Hooke's joint is connected to the described second transmission roller section with described flanged yoke; And joint yoke and the 3rd Hooke's joint, described joint yoke and the 3rd Hooke's joint link together described first transmission roller section and the described second transmission roller section.
Preferably, described bearing is a deep groove ball bearing.
Preferably, described center support further comprises the center support support, and described center support support is used for described center support outer ring is connected to described body bottom panel or vehicle frame.
Preferably, the quantity of described transmission roller section is two, the described second transmission roller section is suitable for being connected with described change speed gear box in the spline mode, the described first transmission roller section is suitable for being connected with described drive axle with form of flanges, and described center support provides support the described second transmission roller section.Further preferably, described driving-shaft assembly further comprises: the spline fork and first Hooke's joint, and described first Hooke's joint is connected to the described second transmission roller section with described spline fork; The flanged yoke and second Hooke's joint, described second Hooke's joint is connected to the described first transmission roller section with described flanged yoke; And joint yoke and the 3rd Hooke's joint, described joint yoke and the 3rd Hooke's joint link together described second transmission roller section and the described first transmission roller section.
Description of drawings
Fig. 1 is the structural representation of conventional driving-shaft assembly;
Fig. 2 is the structural representation according to the driving-shaft assembly of the utility model one embodiment;
Fig. 3 is the structural representation of the eccentric center support of driving-shaft assembly among Fig. 2; And
Fig. 4 is the scheme drawing that the eccentric state of eccentric center support before not assembling with other member of driving-shaft assembly among Fig. 3 is shown.
The specific embodiment
Driving-shaft assembly according to the utility model one embodiment comprises: (quantity is n by at least two, n is the natural number greater than 2, usually for example be two or three) transmission shaft that is connected in sequence of transmission roller section, described at least two transmission roller sections comprise the first transmission roller section and the second transmission roller section, wherein, the described first transmission roller section is suitable for being connected with change speed gear box, and the described second transmission roller section is suitable for being connected with drive axle; And center support (number of center support is at least one, can not surpass n-1 at the most), it is used for a transmission roller section of described at least two transmission roller sections is provided support, and comprise center support outer ring, bearing and be arranged on described center support outer ring and described bearing between the rubber center support, wherein, described supporting outer ring is suitable for being connected with body bottom panel or vehicle frame, and described bearing matches with a described transmission roller section that is supported.When described center support is not assembled together with a described transmission roller section that is supported, the center of described supporting outer ring is lower than the center of described bearing, and after described driving-shaft assembly and described change speed gear box and drive axle are assembled together, under the effect of described transmission shaft gravity, the center of described bearing drops to the center of described supporting outer ring and overlaps.
Driving-shaft assembly of the present utility model makes: after transmission shaft is in place, the center of transmission shaft axle center and center support can be in concentric, thereby improve the transmission shaft setting accuracy, improve the stability of rotation that influences transmission shaft in the vehicle ' process, and prolong the work life of center support.
Below in conjunction with a description of drawings preferred embodiment of the present utility model.As shown in Figure 2, comprise the transmission shaft that is connected in sequence by spline fork 1, first Hooke's joint 2, tween drive spindle 3, joint yoke 5, the 3rd Hooke's joint 6, main driving axle 7, second Hooke's joint 8 and flanged yoke 9 according to the driving-shaft assembly of the preferred embodiment, and the eccentric center support 4 that this transmission shaft is provided support.Wherein, spline fork 1 has male splines, and the male splines of spline fork 1 is suitable for being inserted in the female splines of change speed gear box power output member (for example, the output shaft of change speed gear box); Flanged yoke 9 has flange face, and the flange face of flanged yoke 9 be suitable for the power input link of drive axle (for example, the input shaft of drive axle) end face of flange bolted connection, thus power is passed to drive axle from change speed gear box, be used for drive wheels (, driving the trailing wheel rotation) at engine behind front wheel back-wheel drive structure.Eccentric center support 4 is suitable for captiveing joint with body understructure, and driving-shaft assembly is provided support.As shown in Figure 2,4 pairs of middle transmission shafts 3 of eccentric in this embodiment center support provide support.But, in similar embodiment, eccentric center support 4 also can be arranged to main driving axle 7 is supported, in the case, driving-shaft assembly preferably is connected (promptly making tween drive spindle 3 be connected with output shaft of gear-box in the high stiffness mode) in the flange mode with output shaft of gear-box, and is connected (being connected with the drive axle input shaft in the higher flexibility mode even get main driving axle 7) with the input shaft of drive axle with the spline form.
As shown in Figure 3, the eccentric center support 4 of present embodiment comprises center support outer ring 41, rubber center support 42, deep groove ball bearing 43 and center support support 44.Center support support 44 is positioned at the outermost of center support, is used for captiveing joint with body understructure, and is used for middle supporting outer ring 41 is provided support.In this embodiment, center support support 44 has slotted hole (referring to Fig. 2), be used for being fixed to the body understructure (not shown), but also can adopt other suitable mode to realize captiveing joint of center support support 44 and body understructure by the thread connecting mode of for example bolt.Center support outer ring 41 is between rubber center support 42 and center support support 44.The interior week of rubber center support 42 cooperates with the periphery of deep groove ball bearing 43.Tween drive spindle 3 is assembled on the deep groove ball bearing 43.Tween drive spindle 3 and joint yoke 5 spline fitted, fastening with nut.
In a preferred embodiment, the quantity of described transmission roller section is two, the described first transmission roller section 3 is suitable for being connected with described change speed gear box in the spline mode, the described second transmission roller section 7 is suitable for being connected with described drive axle with form of flanges, and described center support provides support the described first transmission roller section.Preferably, described driving-shaft assembly further comprises: the spline fork and first Hooke's joint 2, and described first Hooke's joint 2 is connected to the described first transmission roller section with described spline fork; The flanged yoke and second Hooke's joint 8, described second Hooke's joint 8 is connected to the described second transmission roller section with described flanged yoke; And joint yoke and the 3rd Hooke's joint 6, described joint yoke and the 3rd Hooke's joint 6 link together described first transmission roller section and the described second transmission roller section.
In another preferred embodiment, the quantity of described transmission roller section is two, the described second transmission roller section is suitable for being connected with described change speed gear box in the spline mode, the described first transmission roller section is suitable for being connected with described drive axle with form of flanges, and described center support provides support the described second transmission roller section.Preferably, described driving-shaft assembly further comprises: the spline fork and first Hooke's joint 2, and described first Hooke's joint is connected to the described second transmission roller section with described spline fork; The flanged yoke and second Hooke's joint 8, described second Hooke's joint 8 is connected to the described first transmission roller section with described flanged yoke; And joint yoke and the 3rd Hooke's joint 6, described joint yoke and the 3rd Hooke's joint 6 link together described second transmission roller section and the described first transmission roller section.
Deep groove ball bearing is simple in structure, and is easy to use, is the production lot maximum, the class bearing that field of application is the widest.It mainly in order to bear radial weight, also can bear certain axial load.When the end-play of bearing strengthens, have the function of angular contact bearing, can bear bigger axial load.Thereby be suitable for use as the midship mounting of driving-shaft assembly.But also can adopt for example other bearing of self-aligning ball bearing etc.
Fig. 4 illustrates the eccentric state of eccentric center support 42 before not assembling with other member of driving-shaft assembly (tween drive spindle 3).As shown in Figure 4, eccentric center support 4 is before unassembled, and the center B of the center A of deep groove ball bearing 43 and rubber center support 42 and center support outer ring 41 is in eccentric state.In other words, before unassembled, center B is positioned at center A below.The axle weight of (tween drive spindle 3) that distance between center B and the center A can be supported according to center support 4 and the rigidity of rubber center support 42 design: make after the assembling under the effect of tween drive spindle 3 gravity center B and center A overlap.
Effect of the present invention is, the driving-shaft assembly that has eccentric center support 4, after on being assembled to body understructure, because transmission shaft self has constant weight, make rubber center support 42 produce distortion, make the center B of the center A of original deep groove ball bearing 43 and rubber center support 42 and center support outer ring 41 be in the decentraction state and become concentric, the axle center of tween drive spindle 3 and eccentric center support 4 also are in concentric, can absorb vibration like this and reduce noise, more steady in the transmission shaft rotating process, prolong the life-span of each parts of center support assembly, guarantee that the setting angle direction is more accurate.Now usually center support is installed on cross member of frame or the body understructure, with the compensation transmission shafts to the installation error of angle direction and vehicle ' process in because the caused displacements of distortion such as driving engine play or vehicle frames.
The above is preferred embodiment of the present utility model only, is not to be used for limiting protection domain of the present utility model; Protection domain of the present utility model is limited by the claim in claims, and every equivalence variation of doing according to utility model and modification, all within the protection domain of the utility model patent.
Claims (7)
1. driving-shaft assembly comprises:
The transmission shaft that is connected in sequence by at least two transmission roller sections, described at least two transmission roller sections comprise the first transmission roller section (3) and the second transmission roller section (7), wherein, the described first transmission roller section (3) is suitable for being connected with change speed gear box, and the described second transmission roller section (7) is suitable for being connected with drive axle; And
Center support (4), it is used for a transmission roller section of described at least two transmission roller sections is provided support, and comprise center support outer ring (41), bearing (43) and be arranged on described center support outer ring (41) and described bearing (43) between rubber center support (42), wherein, described supporting outer ring (41) is suitable for being connected with body bottom panel or vehicle frame, described bearing (43) matches with a described transmission roller section that is supported
It is characterized in that,
When described center support is not assembled together with a described transmission roller section that is supported, the center of described supporting outer ring (41) is lower than the center of described bearing, and after described driving-shaft assembly and described change speed gear box and drive axle are assembled together, under the effect of described transmission shaft gravity, the center of described bearing drops to the center of described supporting outer ring (41) and overlaps.
2. driving-shaft assembly according to claim 1 is characterized in that, described bearing is a deep groove ball bearing.
3. driving-shaft assembly according to claim 1, it is characterized in that, described center support (4) further comprises center support support (44), and described center support support (44) is used for described center support outer ring (41) is connected to described body bottom panel or vehicle frame.
4. driving-shaft assembly according to claim 1, it is characterized in that, the quantity of described transmission roller section is two, the described first transmission roller section (3) is suitable for being connected with described change speed gear box in the spline mode, the described second transmission roller section is suitable for being connected with described drive axle with form of flanges, and described center support (4) provides support the described first transmission roller section (3).
5. driving-shaft assembly according to claim 4 is characterized in that, further comprises:
Spline fork (1) and first Hooke's joint (2), described first Hooke's joint (2) is pitched (1) with described spline and is connected to the described first transmission roller section (3);
Flanged yoke (9) and second Hooke's joint (8), described second Hooke's joint (8) is connected to the described second transmission roller section (7) with described flanged yoke (9); And
Joint yoke (5) and the 3rd Hooke's joint (6), described joint yoke (5) and the 3rd Hooke's joint (6) link together described first transmission roller section (3) and the described second transmission roller section (7).
6. driving-shaft assembly according to claim 1, it is characterized in that, the quantity of described transmission roller section is two, the described second transmission roller section (7) is suitable for being connected with described change speed gear box in the spline mode, the described first transmission roller section (3) is suitable for being connected with described drive axle with form of flanges, and described center support (4) provides support the described second transmission roller section (7).
7. driving-shaft assembly according to claim 6 is characterized in that, further comprises:
Spline fork (1) and first Hooke's joint (2), described first Hooke's joint (2) is pitched (1) with described spline and is connected to the described second transmission roller section (7);
Flanged yoke (9) and second Hooke's joint (8), described second Hooke's joint (8) is connected to the described first transmission roller section (3) with described flanged yoke (9); And
Joint yoke (5) and the 3rd Hooke's joint (6), described joint yoke (5) and the 3rd Hooke's joint (6) link together described second transmission roller section (7) and the described first transmission roller section (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201597055U CN201849317U (en) | 2010-04-13 | 2010-04-13 | Driving shaft assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201597055U CN201849317U (en) | 2010-04-13 | 2010-04-13 | Driving shaft assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201849317U true CN201849317U (en) | 2011-06-01 |
Family
ID=44091728
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201597055U Expired - Lifetime CN201849317U (en) | 2010-04-13 | 2010-04-13 | Driving shaft assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201849317U (en) |
-
2010
- 2010-04-13 CN CN2010201597055U patent/CN201849317U/en not_active Expired - Lifetime
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110601 |
|
| CX01 | Expiry of patent term |