CN116181808B - Driving shaft structure and automobile - Google Patents
Driving shaft structure and automobile Download PDFInfo
- Publication number
- CN116181808B CN116181808B CN202310132834.7A CN202310132834A CN116181808B CN 116181808 B CN116181808 B CN 116181808B CN 202310132834 A CN202310132834 A CN 202310132834A CN 116181808 B CN116181808 B CN 116181808B
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- China
- Prior art keywords
- claw
- shaft
- boss
- half shaft
- 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
- 210000000078 claw Anatomy 0.000 claims abstract description 50
- 238000013016 damping Methods 0.000 claims description 15
- 230000002093 peripheral effect Effects 0.000 claims description 2
- 230000009471 action Effects 0.000 abstract description 3
- 230000005540 biological transmission Effects 0.000 description 13
- 230000001133 acceleration Effects 0.000 description 8
- 238000010586 diagram Methods 0.000 description 6
- 230000007246 mechanism Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 230000003139 buffering effect Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000004073 vulcanization Methods 0.000 description 2
- 229920000297 Rayon Polymers 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000008447 perception Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D3/00—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive
- F16D3/50—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive with the coupling parts connected by one or more intermediate members
- F16D3/72—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive with the coupling parts connected by one or more intermediate members with axially-spaced attachments to the coupling parts
- F16D3/74—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive with the coupling parts connected by one or more intermediate members with axially-spaced attachments to the coupling parts the intermediate member or members being made of rubber or other rubber-like flexible material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
- B60B35/00—Axle units; Parts thereof ; Arrangements for lubrication of axles
- B60B35/12—Torque-transmitting axles
- B60B35/14—Torque-transmitting axles composite or split, e.g. half- axles; Couplings between axle parts or sections
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/80—Technologies aiming to reduce greenhouse gasses emissions common to all road transportation technologies
- Y02T10/86—Optimisation of rolling resistance, e.g. weight reduction
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)
- Motor Power Transmission Devices (AREA)
Abstract
The invention relates to a driving shaft structure and an automobile, which comprise a fixed half shaft connected to a wheel end and a movable half shaft connected to a gearbox end, wherein the fixed half shaft is provided with a first claw, the movable half shaft is provided with a second claw, when the fixed half shaft is connected with the movable half shaft, a boss of the first claw is inserted into a corresponding claw groove of the second claw, a gap is arranged between a boss of the first claw and a boss of an adjacent second claw in the circumferential direction, and an elastic piece is arranged in the gap and is connected with the boss of the first claw and the boss of the second claw. According to the invention, the elastic piece is arranged in the gap, so that the impact torsion is buffered, the energy of the gear in the impact action can be reduced, the noise generated by knocking teeth is effectively reduced, and the experience of the gear is improved; meanwhile, the clamping jaws are matched and connected with the clamping springs, so that the power can still be effectively transmitted under the condition of rubber damage, and the reliability is high.
Description
Technical Field
The invention relates to the technical field of speed variators, in particular to a driving shaft of an automobile.
Background
The driving shaft is one of the key transmission components in the automobile transmission system, as shown in fig. 1, in the whole automobile state, the working torque of the engine 3 is transmitted to the wheel end 2 through the driving shaft 1 by the gearbox 4 to drive the whole automobile to run, and the torque transmission mechanisms of the driving shaft 1 and the gearbox 4 are in clearance fit as the gear fit structure or the roller and ball fit structure. As shown in fig. 2, under the working conditions of forward and reverse direction switching, rapid acceleration in sliding, fast accelerator loosening in running and the like, when the stress direction of the driving shaft is switched, the fit clearance of the power transmission system is changed from one side of the transmission fit mechanism to the other side, and at the moment of eliminating the fit clearance of the transmission system, the inertia impact generated under the fluctuation effect of the rotating speed can generate knocking sound, and the driving comfort is influenced by the perception of drivers when the sound is loud.
The prior art is to reduce the knocking inertia during the conversion of the stress direction and reduce the knocking sound by reducing the fit clearance between the driving shaft 1 and the internal torque transmission mechanism of the gearbox 4. However, when the engine torque is large or the whole vehicle mass is large and the inertial energy is large, even a small fit clearance can generate obvious knocking sound, so that the comfort feeling of drivers and passengers is affected.
Disclosure of Invention
One of the purposes of the present invention is to provide a driving shaft to solve the problem that the comfort of drivers and passengers is affected by the obvious impact sound generated by the structure in the prior art; the second purpose is to provide an automobile.
In order to achieve the above purpose, the technical scheme adopted by the invention is as follows:
The utility model provides a drive shaft structure, includes the fixed semi-axis that is connected to the wheel end and is connected to the removal semi-axis of gearbox end, the fixed semi-axis has first jack catch, it has the second jack catch to remove the semi-axis, when fixed semi-axis is connected with removing the semi-axis, in the jack catch groove that corresponds of second jack catch is inserted to the boss of first jack catch, in circumferential direction, have the clearance between the boss of first jack catch and the boss of adjacent second jack catch, be equipped with the elastic component in the clearance, the elastic component is all connected with the boss of first jack catch and the boss of second jack catch.
According to the technical means, when the movable half shaft is connected with the fixed half shaft, the first claw and the second claw are in cross fit, so that a gap is formed between the boss of the first claw and the boss of the adjacent second claw, and the elastic piece is arranged in the gap and is connected with the boss of the first claw and the boss of the second claw, therefore, when the gear is subjected to inertial impact due to working conditions such as switching of the running direction of an automobile and rapid acceleration, the elastic piece is under the action of torsion, and meanwhile, the elastic piece is driven to deform due to the influence of the inertial impact, the elastic piece can generate a reset trend, the impact effect is hindered, the impact energy of the gear is further reduced, the impact sound generated by the inertial impact is finally weakened, and the experience of a user is improved.
Further, the damping of the gap is related to the value and direction of the torsion force applied to the corresponding bosses of the first jaw and the second jaw.
According to the technical means, because the frequency and the torque value of the torque direction (clockwise/anticlockwise) are different, the damping required by a single gap is not the same, for example, when a vehicle runs, most of the time is forward running, namely the frequency of forward running is higher, in the process of rapid acceleration of forward running, the damping required by a plurality of gaps is higher, and in addition, the damping of the gaps is smaller, so that the damping of each gap can be set according to the direction and the frequency, and the direction buffer performance with larger stress and more frequency is better.
Further, the value of the damping is changed by: the length/width of the gap is varied, or the spring rate of the spring is varied, or a combination of both.
Further, the radial middle part of first jack catch is equipped with the axostylus axostyle, the middle part of second jack catch is equipped with the shrinkage pool, fixed semi-axis and removal semi-axis pass through axostylus axostyle and shrinkage pool shaft hole complex mode is connected.
Further, the elastic piece is in a block shape, and after the fixed half shaft is connected with the movable half shaft, gaps between the first clamping jaw and the second clamping jaw are respectively provided with the elastic piece.
Further, the elastic members are configured in a block shape and the same number as the gaps, the elastic members are circumferentially arranged on the outer peripheral surface of the ring member, and the shaft rod passes through the ring member so that the elastic members are located in the corresponding gaps.
Further, the elastic piece is made of rubber.
Further, the clamping springs are sleeved on the shaft rod, so that the shaft rod is fixedly connected with the concave holes when the shaft rod is matched with the concave hole shaft holes.
Further, when the torque applied to the movable half shaft reaches the preset torque, the movable half shaft and the fixed half shaft rotate relatively.
Further, the shaft is detachably connected with the first claw.
Further, a groove is formed in the shaft rod, and the clamp spring is assembled on the groove.
Further, the elastic member is bonded to the first jaw or the second jaw.
An automobile comprises the driving shaft structure.
The invention has the beneficial effects that:
According to the invention, the elastic piece is arranged in the gap, so that the impact torsion generated under the fluctuation of the rotating speed is buffered, the energy of the gear in the impact action can be reduced, the noise generated by knocking teeth is effectively reduced, and the experience of the gear is improved; meanwhile, the clamping jaws are matched and connected with the clamping springs, so that the power can still be effectively transmitted under the condition of rubber damage, and the reliability is high.
Drawings
FIG. 1 is a schematic view of the position of a drive shaft;
FIG. 2 is a schematic diagram of the principle of the clicking sound;
FIG. 3 is a schematic view (exploded view) of the structure of the present invention;
FIG. 4 is a schematic diagram of the structure of the present invention;
Fig. 5 is a schematic diagram of the working principle of the present invention, wherein a represents a schematic diagram of a matching mode of the first claw, the second claw and the elastic member when the whole vehicle is in a static state, i.e. the driving shaft is not subjected to torsion; b represents a schematic diagram of a matching mode of the first claw, the second claw and the elastic piece when the whole vehicle is in a rapid acceleration or reverse sliding state under the working condition of forward driving and sliding forward driving of the engine; and c, when the whole vehicle is in the working condition that the engine drives back, the driving shaft is in the working condition that the driving shaft is in opposite impact torsion such as the working condition of sliding back, rapid acceleration or forward sliding, and the like, the first clamping jaw, the second clamping jaw and the elastic piece are matched in a schematic diagram.
The device comprises a 1-driving shaft, 2-wheels, a 3-engine, a 4-gearbox, a 5-driving shaft, a 51-fixed half shaft, a 52-movable half shaft, a 53-first claw, a 54-second claw and a 55-elastic piece, wherein the first claw is arranged on the first side of the device; 56-snap springs; 57-shaft lever; 58-concave holes; 59-grooves.
Detailed Description
Further advantages and effects of the present invention will become readily apparent to those skilled in the art from the disclosure herein, by referring to the following description of the embodiments of the present invention with reference to the accompanying drawings and preferred examples. The invention may be practiced or carried out in other embodiments that depart from the specific details, and the details of the present description may be modified or varied from the spirit and scope of the present invention. It should be understood that the preferred embodiments are presented by way of illustration only and not by way of limitation.
It should be noted that the illustrations provided in the following embodiments merely illustrate the basic concept of the present invention by way of illustration, and only the components related to the present invention are shown in the drawings and are not drawn according to the number, shape and size of the components in actual implementation, and the form, number and proportion of the components in actual implementation may be arbitrarily changed, and the layout of the components may be more complicated.
The present embodiment proposes a drive shaft, as shown in fig. 3-4, comprising a fixed half-shaft 51 and a mobile half-shaft 52, the fixed half-shaft 51 being connected to the wheel 2 and the mobile half-shaft 52 being connected to the gearbox 4, in gear engagement with the gearbox 4.
The fixed half shaft 51 is provided with a first claw 53, a shaft lever 57 is arranged at the radial center of the first claw 53, the movable half shaft 52 is provided with a second claw 54, a concave hole 58 is arranged at the radial center of the second claw 54, and when the shaft lever 57 is matched with the concave hole 58 in a shaft hole, the fixed half shaft 51 is connected with the movable half shaft 52, so that torque output by the gearbox 4 can be transmitted to the wheels 2. Meanwhile, the first claw 53 is matched with the second claw 54 in the following specific matching mode: each boss of the first jaw 53 is inserted into a corresponding jaw groove of the second jaw 54, and in the circumferential direction, a gap is provided between the boss of the first jaw 53 and an adjacent boss of the second jaw 54, and an elastic member 55 is provided at the position of the gap, and the elastic member 55 is connected with the boss of the first jaw 53 and the boss of the corresponding second jaw 54, and the elastic member 55 enables damping to be generated by the elastic member 55 when the fixed half shaft 51 and the movable half shaft 52 relatively rotate so that the boss of the first jaw 53 and the boss of the corresponding second jaw 54 are close to or far from each other.
As shown in a of fig. 5, the first jaw 53 and the second jaw 54 are not moved while the automobile is stationary, and the amount of extension or compression of the elastic member 55 is not changed; as shown in fig. 5 b, when the whole vehicle is in a state of rapid acceleration or reverse sliding under the forward and sliding forward working conditions of engine driving, the fit clearance of the power transmission system is turned from one side of the transmission fit mechanism to the other side, and when the fit clearance of the transmission system is eliminated, a larger inertia energy impact torque force is generated, the boss of the second claw 54 rotates clockwise to apply the impact torque force transmitted from the power transmission system to the elastic member 55, and then the elastic member 55 transmits the torque force to the boss of the adjacent first claw 53, so that the transmission of the impact torque force is realized. In this process, part of the elastic member 55 is pulled, and the other part of the elastic member 55 is pressed, buffering the impact torque and relieving the striking sound. At this time, the elastic member 55 has a tendency to return, which can apply a reaction force in the rotation direction of the striking gear, reducing transient energy when the gear rotates, and thus reducing the striking sound.
In the same principle, when the whole vehicle is in the reverse working condition of impact torsion of the driving shaft such as engine driving reversing, rapid acceleration under the sliding reversing working condition or forward sliding state, and the like, as shown in fig. 5 c, the elastic force of the elastic piece 55 is also utilized to buffer the reverse impact torsion, so that the knocking sound is relieved.
The damping of the gap is related to the magnitude and direction of the torque applied, which acts on the corresponding bosses of the first jaw 53 and the bosses of the second jaw 54.
Because the stress and the frequency of the driving shaft 5 are not identical in the two torsion directions (clockwise/anticlockwise), the assembled first claw 53 and the assembled second claw 54 can be arranged in a different way or the elastic coefficients of the elastic pieces 55 can be different, so that the frequency difference of torsion directions (clockwise/anticlockwise) of the whole vehicle is met, the single gap is not identical in required damping, for example, when the vehicle runs, most of the time is forward running, namely the frequency of forward running is higher, in the process of rapid acceleration of forward running, the damping of a certain gap is larger, and in addition, the damping of each gap is smaller, therefore, the damping of each gap can be set according to the direction and the frequency, and the direction with larger stress and more frequency has better buffering performance.
In this embodiment, the value of the damping may be changed by: the length/width of the gap is varied, or the spring rate of the spring is varied, or a combination of both.
In an extreme case, the elastic member 55 may be torn or fall off, and since the fixed half shaft 51 and the movable half shaft 52 are already connected together, the torsion force can be directly transmitted through the first claw 53 and the second claw 54, and finally, the vehicle can safely travel to the 4S shop for inspection and maintenance.
The elastic member 55 may be a spring, and in this embodiment, the elastic member 55 is rubber, and the rubber is adhered to the first claw 53 or the second claw 54 by vulcanization, where the rubber has a sound absorption function, so that the knocking sound can be further relieved, and the experience of passengers in the passenger cabin is improved.
Namely, the assembled first clamping jaw 53 and the assembled second clamping jaw 54 are in cross fit, a fit gap is reserved between the clamping jaws, rubber is assembled between the clamping jaws to fill the fit gap between the clamping jaws, the sizes and the numbers of the clamping jaws and the rubber blocks can be designed according to the torque required to be transmitted by the driving shaft, and the rubber is adhered to the first clamping jaw 53 and the second clamping jaw 54 into a whole in a viscose or vulcanization mode, so that the structure is compact. The hardness of the rubber can be adjusted by adopting different rubber formulas according to the requirement.
In this embodiment, the snap spring 56 is assembled on the groove 59 of the shaft lever 57, after the shaft lever 57 is inserted into the concave hole 58, the shaft lever 57 and the concave hole 58 are in transition fit or interference fit in the radial direction through the snap spring 56, the axial direction has enough fit length, the assembled fixed half shaft 51 and the assembled movable half shaft 52 can rotate relatively when reaching the torque threshold, meanwhile, the driving shaft 5 is ensured to have enough straightness, flexible deformation cannot occur in the process of high rotation speed and torque transmission, and the risk that the fixed half shaft 51 and the movable half shaft 52 are separated from the assembling part and are separated into two sections is avoided.
The shaft may be designed to be integral with the first jaw 53 or to be removably assembled (threaded, plugged, etc.) depending on the manufacturing, assembly convenience requirements.
In one embodiment, the elastic members 55 are rubber blocks, and after the movable half shaft 52 and the fixed half shaft 51 are connected, the elastic members 55 are arranged in gaps between the first claw 53 and the second claw 54.
In another embodiment, the elastic member 55 is configured as a block-shaped rubber, and the number of blocks is the same as the number of gaps, the elastic member 55 is fitted on the outer circumferential surface of the ring member, and the shaft 57 passes through the ring member so that the elastic member 55 is located in the corresponding gap. The assembly mode when the structure is as follows: the elastic member 55 is first attached to the ring member and then assembled into the gap between the first jaw 53 and the second jaw 54.
The embodiment also provides an automobile provided with the driving shaft.
The above embodiments are merely preferred embodiments for fully explaining the present invention, and the scope of the present invention is not limited thereto. Equivalent substitutions and modifications will occur to those skilled in the art based on the present invention, and are intended to be within the scope of the present invention.
Claims (11)
1. A drive shaft structure, characterized by: the novel bicycle comprises a fixed half shaft connected to a wheel end and a movable half shaft connected to a gearbox end, wherein the fixed half shaft is provided with a first claw, the movable half shaft is provided with a second claw, when the fixed half shaft is connected with the movable half shaft, a boss of the first claw is inserted into a corresponding claw groove of the second claw, a gap is formed between a boss of the first claw and a boss of an adjacent second claw in the circumferential direction, an elastic piece is arranged in the gap, and the elastic piece is connected with the boss of the first claw and the boss of the second claw;
the damping of the gap is related to the value and the direction of the torsion force, and the torsion force acts on the corresponding boss of the first claw and the boss of the second claw;
The value of the damping is changed by: the length/width of the gap is varied, or the spring rate of the spring is varied, or a combination of both.
2. The drive shaft structure according to claim 1, wherein: the radial middle part of first jack catch is equipped with the axostylus axostyle, the middle part of second jack catch is equipped with the shrinkage pool, fixed semi-axis and removal semi-axis pass through axostylus axostyle and shrinkage pool shaft hole complex mode is connected.
3. The drive shaft structure according to claim 1, wherein: the elastic piece is blocky, after the fixed half shaft is connected with the movable half shaft, the elastic piece is arranged in gaps between the first clamping jaw and the second clamping jaw.
4. The drive shaft structure according to claim 2, wherein: the elastic members are configured in a block shape and the same number as the gaps, are circumferentially arranged on the outer peripheral surface of the ring-shaped member, and the shaft rod passes through the ring-shaped member so that the elastic members are located in the corresponding gaps.
5. The drive shaft structure according to claim 3 or 4, characterized in that: the elastic piece is made of rubber.
6. The drive shaft structure according to claim 2, wherein: the clamping springs are sleeved on the shaft rod, so that the shaft rod is fixedly connected with the concave holes when the shaft rod is matched with the concave hole shaft holes.
7. The drive shaft structure according to claim 6, wherein: when the torque applied to the movable half shaft reaches the preset torque, the movable half shaft and the fixed half shaft rotate relatively.
8. The drive shaft structure according to claim 6, wherein: the shaft rod is detachably connected with the first clamping jaw.
9. The drive shaft structure according to claim 6, wherein: the shaft lever is provided with a groove, and the clamp spring is assembled on the groove.
10. A drive shaft arrangement according to claim 2 or 3, characterized in that: the elastic piece is adhered to the first clamping jaw or the second clamping jaw.
11. An automobile, characterized in that: comprising a drive shaft arrangement according to any one of claims 1-10.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310132834.7A CN116181808B (en) | 2023-02-20 | 2023-02-20 | Driving shaft structure and automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310132834.7A CN116181808B (en) | 2023-02-20 | 2023-02-20 | Driving shaft structure and automobile |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN116181808A CN116181808A (en) | 2023-05-30 |
| CN116181808B true CN116181808B (en) | 2024-05-14 |
Family
ID=86450277
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310132834.7A Active CN116181808B (en) | 2023-02-20 | 2023-02-20 | Driving shaft structure and automobile |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116181808B (en) |
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| CN214788919U (en) * | 2021-03-02 | 2021-11-19 | 长城汽车股份有限公司 | Driving shaft assembly and vehicle |
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| JP6131863B2 (en) * | 2014-01-17 | 2017-05-24 | 株式会社デンソー | Power transmission device |
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2023
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Also Published As
| Publication number | Publication date |
|---|---|
| CN116181808A (en) | 2023-05-30 |
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