JPH076517U - Inertial mass addition structure in vehicle drive system - Google Patents

Abstract

(57) [Abstract] [Purpose] The purpose is to respond to resonance in the drive system of a vehicle with good applicability by adding an inertial mass to the propeller shaft side of the vehicle. [Structure] Driven by connecting one or more inertial masses 15 for adding inertial mass to a connecting portion between a companion flange portion 3 on the side of a drive pinion end 2 and a companion flange portion 11 on a side of a flange yoke 10. Appropriate measures corresponding to system resonance can be taken, and it is possible to implement without changing the structure of the connecting portion between both companion flange portions 11 and 3.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an inertial mass adding structure for a drive system of a vehicle, and more particularly to a mounting structure for an inertial mass for adding an inertial mass.

[0002]

[Prior art]

 Generally, in a vehicle, there is a problem that the drive system resonates due to the fluctuation of the angular acceleration generated by the engine, and abnormal vibration or noise is generated, which causes discomfort.

[0003]

[Problems to be solved by the device]

 Conventionally, in order to deal with this problem, the mass of the flywheel of the engine is increased and the diameter of the propeller shaft is changed. However, such a measure had a problem that the applicability was lacking because the design of each engine part and the drive system had to be changed drastically.

The present invention has been made in view of the above circumstances, and has a configuration in which an inertial mass is added to the propeller shaft side of a vehicle, and it is possible to cope with resonance in a drive system of the vehicle with good applicability. Incidentally, as a technique relating to a propeller shaft, there is a technique disclosed in Japanese Utility Model Laid-Open No. 57-33322 and Japanese Utility Model Laid-Open No. 61-142922.

[0005]

[Means for Solving the Problems]

 In the present invention, one or more inertial masses for adding an inertial mass are attached to a connecting portion between a companion flange portion of a differential carrier of a vehicle and a companion flange portion of a propeller shaft.

[0006]

[Action]

 In such a configuration, by installing the inertial mass by the number corresponding to the drive system resonance, it is possible to take appropriate measures corresponding to the drive system resonance, and the companion flange part of the differential carrier and the companion flange of the propeller shaft can be taken. It is excellent in applicability because it can be performed without changing the structure of the connecting part and the like, or by very simple changes.

[0007]

【Example】

 Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. In FIG. 1, an axle housing 1 of a vehicle is equipped with a differential carrier (not shown) including a final gear (final reduction gear) and a differential gear (differential gear). A companion flange 3 is provided at the drive pinion end 2 of the final gear.

The propeller shaft 4 connected to the drive pinion end portion 2 via the companion flange portion 3 has a tube 5 and a spline joint portion including a spline shaft 6 and a spline yoke 7 provided on the tube 5. 8 and a universal joint 9 provided at the end of the tube 5 and the end of the spline yoke 7. The flange yoke 10 of the universal joint portion 9 is provided with a companion flange portion 11.

A mounting bolt insertion hole 12 is formed in each of the companion flange portion 3 on the side of the drive pinion end 2 and the companion flange portion 11 on the side of the flange yoke 10, and the companion flange portions 3 and 11 are connected to each other. The nuts 14 are connected to each other by fitting and tightening the nuts 14 into the mounting bolts 13 inserted into the respective mounting bolt insertion holes 12.

Here, one or more inertial masses 15 for adding an inertial mass are interposed and connected to a connecting portion between the companion flange portion 3 on the side of the drive pinion end 2 and the companion flange portion 11 on the side of the flange yoke 10. To be done. As shown in FIG. 2, the inertial mass 15 is formed in a disc shape having a predetermined wall thickness (for example, 30 mm), and some edge portions 15a having a ring shape are provided on the outer peripheral edge portions of both end surfaces. Has been. Further, the inertial mass 15 is provided with a mounting bolt insertion hole 16 penetrating between both end surfaces.

A plurality of inertial masses 15 having the above configuration are prepared, and the number to be used is selected in accordance with the resonance of the drive system. In this embodiment, four inertial masses 15 are selected and attached as follows. That is, the inertial mass 15 is interposed and superposed on the connecting portion between the companion flange portion 11 and the companion flange portion 3, respectively, and is fastened together by the mounting bolt 13 and the nut 14 that fasten the companion flange portions 11 and 3 together. To be done.

According to such a configuration, by providing the inertial masses 15 by the number corresponding to the drive system resonance, appropriate countermeasures corresponding to the drive system resonance can be taken, and both companion flange portions 11 and 3 are connected to each other. It has excellent applicability because it can be implemented without any change in the structure of the connecting part. In addition, as a result of interposing the inertia mass 15 in the connecting portion between the both companion flange portions 11 and 3, the distance between the transmission and the differential carrier varies depending on the number of use of the inertia mass 15, but the spline joint in the propeller shaft 4 is changed. Since this variation of the distance can be absorbed by the unit 8, there is no problem.

3 and 4 show another embodiment of the present invention. In this embodiment, the inertia mass 18 is attached to the outer peripheral portion of the flange yoke 9 at the connecting portion between the companion flange portion 3 on the differential carrier side and the companion flange portion 17 on the propeller shaft 4 side. The distance between the transmission and the differential carrier does not change depending on the number.

That is, the companion flange portion 17 of the flange yoke 9 is formed in a large-diameter circular plate shape, and the flange portion 9 is integrally formed with a cylindrical portion 19 protruding from the end face of the companion flange portion 17. In the companion flange portion 17, in addition to the mounting bolt insertion hole 20 for fastening the companion flange portions 17 and 3, an insertion hole 21 for a mounting bolt 22 for mounting the inertial mass 18 is formed.

On the other hand, the inertial mass 18 is formed in a circular ring shape having a predetermined wall thickness (for example, 30 mm). Further, the inertial mass 18 is provided with a mounting bolt insertion hole 23 penetrating between both end surfaces. As shown in FIG. 4, the inertial mass 18 is fitted into the outer peripheral portion of the cylindrical portion 19 of the flange yoke 9, and the mounting bolts 22 are attached to the companion flange portion 17 and the inertial mass 15 through the mounting bolt insertion holes 21 and 23. It is attached to the companion flange portion 17 by inserting the nut 24 and fitting and tightening the nut 24.

Further, the companion flange portion 3 is inserted inside the cylindrical portion 19 and abuts against the companion flange portion 17, and the companion flange portions 3 and 17 are inserted into the respective mounting bolt insertion holes 20 and 12. Not connected by fitting a nut to the mounting bolt and tightening. Even in such a configuration, by mounting the inertial mass 18, it is possible to take appropriate measures corresponding to the resonance of the drive system, and it is easy to implement by simply changing the structure of the flange yoke 9. ing.

In this embodiment, a single inertial mass 18 is provided, but a plurality of inertial masses may be prepared and the number to be used may be selected according to the resonance of the drive system. In this case, the cylindrical portion 19 of the flange yoke 9 is set in advance to an axial length such that a plurality of inertial masses can be fitted therein. As described above, the present invention has been described with reference to the specific embodiments. However, the present invention is not limited to this, and a person skilled in the art can register the utility model attached to the present invention. It should be noted that various changes and modifications can be made without departing from the scope of the claims.

[0018]

[Effect of device]

 As described above, according to the present invention, one or more inertia masses for adding an inertial mass are attached to the connecting portion between the companion flange portion of the vehicle differential carrier and the companion flange portion of the propeller shaft. It is possible to take appropriate measures corresponding to the above, without requiring major design changes to the engine parts and drive system, and what is the structure of the connection part between the companion flange part of the differential carrier and the companion flange part of the propeller shaft. Since it can be carried out without modification or by extremely simple modification, it has excellent practical applicability and great practical effect.

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment of an inertial mass adding structure in a drive system of a vehicle according to the present invention.

FIG. 2 is a sectional view of an inertial mass according to the above embodiment.

FIG. 3 is a perspective view showing another embodiment.

FIG. 4 is a sectional view showing a state in which an inertial mass is attached in the embodiment.

[Explanation of symbols]

 1 Axle housing 2 Drive pinion end part 3 Companion flange part 4 Propeller shaft 9 Flange yoke 11 Companion flange part 15 Inertia mass 17 Companion flange part 18 Inertia mass 19 Cylindrical part

Claims (1)

[Scope of utility model registration request] 1. An inertia in a drive system of a vehicle, characterized in that one or more inertia masses for adding an inertial mass are attached to a connecting portion between a companion flange portion of a differential carrier of a vehicle and a companion flange portion of a propeller shaft. Mass addition structure