JPH0732228Y2 - Propeller shaft mounting structure - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention relates to a propeller shaft mounting structure, and in particular, can be improved in versatility and mountability, can be downsized, and can improve sealability. In addition, the present invention relates to a propeller shaft mounting structure capable of improving mounting accuracy.

[Conventional technology]

Among automobiles, for example, an automobile with a front-mounted internal combustion engine rear wheel drive system transmits the driving force of the internal combustion engine from a transmission to a rear final reduction gear via a propeller shaft to drive wheels mounted on a drive axle. To do. In such automobiles, the drive axle is supported by the vehicle body via the rear final reduction gear, which causes vertical movements caused by changes in the loading load and road surface conditions, forward / backward movements during acceleration / deceleration traveling, and front / rear movements due to driving reaction force. Oscillation or movement on the internal combustion engine side causes a change in the angle (axis crossing angle) and the distance between the transmission and the final reduction gear. Therefore, the propeller shaft provided between the transmission and the final reduction gear needs to be mounted so as to absorb and compensate for the change in the angle and the distance and ensure the smoothness of these behaviors. Therefore, by adopting a structure in which joints are respectively mounted between the transmission side output shaft and the final reduction gear side input shaft and the propeller shaft, the changes in the angle and the distance are absorbed and compensated.

Such propeller shaft mounting structures are disclosed in Japanese Utility Model Publication No. 61-34906 and Japanese Utility Model Publication No. 61-24728.

Examples of the conventional propeller shaft mounting structure include, for example, an inner ring of a joint including an inner ring and an outer ring and balls held by a cage between the inner ring and the outer ring at the input end and the output end of the propeller shaft, respectively. At the same time, there is a structure in which mounting flanges are integrally projected in the radial direction of the outer rings of these joints, and a mounting member for the transmission-side output shaft and a mounting member for the final reduction gear-side input shaft are respectively mounted on these flanges. Alternatively, an inner ring of a joint including an inner ring and an outer ring and balls held by a cage between the inner ring and the outer ring is attached to the input end and the output end of the propeller shaft, and the transmission side output shaft is attached to the outer ring of these joints. There is a case where the mounting member and the mounting member of the final reduction gear side input shaft are directly brought into contact with each other.

[Problems to be solved by the invention]

However, as in the former case, if a flange for mounting is integrally projected in the radial direction on the outer ring of the joint, it cannot be used for other models, and thus there is an inconvenience that the versatility is deteriorated and the mounting workability is deteriorated. However, there is a disadvantage that the outer diameter is large and the size is large. Further, like the latter case, if the mounting member for the output shaft of the transmission and the mounting member for the input shaft of the final reduction gear are directly brought into contact with the outer ring of the joint to mount them, it is inconvenient to inject the lubricant such as grease. At the same time, there was an inconvenience that the sealability was impaired. Furthermore, in the conventional mounting structure, when mounting the outer ring of the joint to the mounting member of the transmission side output shaft and the mounting member of the final reduction gear side input shaft,
Since there is no reference for the mounting position, there is the inconvenience of lowering the mounting accuracy.

[Purpose of device]

Therefore, an object of the present invention is to realize a propeller shaft mounting structure that can improve versatility and mounting property, can be downsized, and can improve sealing property and mounting accuracy. It is in.

[Means for solving problems]

In order to achieve this object, the present invention comprises a propeller shaft that connects an output shaft of a transmission and an input shaft of a final reduction gear with an inner ring and an outer ring, and a ball held by a cage between the inner ring and the outer ring. In a propeller shaft mounting structure to be mounted on the mounting member of each shaft by each joint, a fitting member that fits between the outer ring of each joint and the mounting member of each shaft and that fits to the outer ring and the mounting member, respectively. And a fitting member to be fitted into the mounting member is provided to protrude from the fitting member.

[Action]

According to the configuration of the present invention, each joint of an inner ring and an outer ring of a propeller shaft that connects the transmission-side output shaft and the final reduction gear-side input shaft and a ball held by a cage between the inner ring and the outer ring is connected. The fitting member provided between the outer ring and the mounting member of each shaft may be fitted to the outer ring and the mounting member to facilitate the mounting, and the mounting flange may be protruded. No, it can also be used for other models. In addition, since the fitting member is provided without directly mounting the mounting member for each shaft on the outer ring of each joint, there is no risk of lubricant such as grease leaking,
The sealing property can be improved. Further, since the fitting member is provided so as to be fitted into the mounting member of each shaft, the rotation direction and the rotation center of each shaft and the propeller shaft can be easily and surely matched.

〔Example〕

 Next, an embodiment of the present invention will be described in detail with reference to the drawings.

1 to 6 show an embodiment of the present invention. In FIG. 6, 2 is a transmission, 4 is a front final reduction gear, 6 is a power distribution device, 8 is a propeller shaft, and 10 is a rear final reduction gear. The driving force of the internal combustion engine (not shown) is input to the input shaft 12 of the transmission 2, and the transmission gear train 14 produces a desired torque.
It is converted into rotation speed and taken out from the output shaft 16. The driving force extracted from the output shaft 16 is transmitted to the front drive axles 18 of the front final reduction gear 4 to drive the front wheels (not shown).

The driving force extracted from the output shaft 16 of the transmission 2 is distributed and input to the input shaft 20 of the power distribution device 6,
It is taken out from the output shaft 22. The driving force extracted from the output shaft 22 is input to the propeller shaft 8 via the front joint 24. In this embodiment, the propeller shaft 8
The front propeller shaft 8-1 and the rear propeller shaft 8-2
It is divided into two and are connected by an intermediate joint 26.

The driving force transmitted from the front propeller shaft 8-1 via the intermediate joint 26 to the rear propeller shaft 8-2 is applied to the rear joint 2
It is transmitted to the input shaft 30 of the rear final reduction gear 10 via 8 and drives rear wheels (not shown) via the rear drive axles 32.
That is, the vehicle of this embodiment is a four-wheel drive vehicle in which all front wheels and rear wheels are driven. Reference numeral 34 is an intermediate bearing of the propeller shaft 8, and reference numeral 36 is a viscous joint (viscus coupling). Further, the joints 24 to 28 interposed at the respective connecting portions of the propeller shaft 8 have the same configuration, and the inner ring 24-1, 26-1, 28-1 and the outer ring 24-2, respectively.
26-2 / 28-2 and inner ring 24-1, 26-1, 28-1 and outer ring 24
It consists of balls 24-4, 26-4, 28-4 held by cages 24-3, 26-3, 28-3 between -2, 26-2, 28-2.

In this way, the propeller shaft 8 that connects the output shaft 22 of the power distribution device 6 which is the transmission side output shaft and the input shaft 30 of the rear final reduction gear 10 which is the final reduction gear side input shaft includes the front and rear portions. The joints 24 and 28 are attached to the attachment members 38 and 40 of the shafts 22 and 30, respectively.

In such a propeller shaft 8 mounting structure, the outer rings 24-2 and 28-2 of the front and rear joints 24 and 28 and the shafts 22 are
・ The outer ring 24-2, 28-2 is between the mounting members 38, 40 of 30.
And fitting members 42 and 44 that fit into the mounting members 38 and 40, respectively.
In addition, the fitting members 42 and 44 are provided with fitting members 46 and 48 which are fitted into the mounting members 38 and 40, respectively.

Since the front joint 24 and the rear joint 28 have the same configuration, the front joint 24 will be described.

As shown in FIGS. 1 to 5, the inner ring 24-1 of the front joint 24 is attached to the input end 50 of the front propeller shaft 8-1. The end face 51 of the outer ring 24-2 of this front joint 24 is
A plurality of bolt through holes 54 through which the mounting bolts 52 are inserted when the 24-2 is attached to the mounting member 38 are formed at equal intervals in the circumferential direction, and will be described later at the radially opposing positions between the bolt through holes 54. A pair of screw holes 58 into which countersunk screws 56 are screwed when fixing the fitting member 42 are formed.

On the end surface 62 of the mounting member 38 provided at the output shaft end 60 of the output shaft 22 of the power distribution device 6 which is the transmission side output shaft, a circle is formed at a position corresponding to the bolt through hole 54 of the outer ring 24-2. A plurality of bolt screw holes 64 are formed at equal intervals in the circumferential direction. Also,
A pair of fitting holes 66 are formed in the mounting member 38 at positions radially opposite to each other between the bolt screw holes 64.

An outer ring 24-2 of the front joint 24 and a mounting member 38 for the output shaft 22.
The fitting member 42, which is interposed between the outer ring 24-2 and the mounting member 38, has a flange portion 68 and a web portion 70, and has a T-shaped cross section. ing.

An outer ring fitting portion 72 having a diameter substantially the same as the outer diameter of the outer ring 24-2 is formed on one side of the flange portion 68, and the output shaft is formed on the other side of the flange portion 68. An output shaft fitting portion 74 having a diameter substantially the same as the outer diameter of the mounting member 38 of 22 is formed. Since the flange portion 68 can be formed to have a thickness enough to secure the outer ring fitting portion 72 and the output shaft fitting portion 74, the thickness in the radial direction can be increased as in the conventional case. Can be formed without.

Further, the web portion 70 is formed with a plurality of bolt insertion holes 76 at equal intervals in the circumferential direction at positions corresponding to the bolt through holes 54 of the outer ring 24-2 and the bolt screw holes 64 of the mounting member 38. At the same time, a pair of screw insertion holes 78 are formed at radially opposed positions between the bolt insertion holes 76 at positions corresponding to the screw holes 58 of the outer ring 24-2. Further, in the web portion 70 of the fitting member 42, the fitting member 46 is provided in a pair of mounting holes 46a formed at positions corresponding to the pair of fitting holes 66 formed in the mounting member 38.
Are installed and projecting. An outer peripheral edge 84 of the grease cover 82 is press-fitted to the inner peripheral end 80 of the web portion 70 in order to prevent leakage of grease as a lubricant of the joint 24.

Next, the operation will be described.

When the front propeller shaft 8-1 is attached to the output shaft 22 of the power distribution device 6 which is the transmission side output shaft, the outer ring 24-2 of the front joint 24 is fitted to the outer ring of the flange portion 68 of the fitting member 42. The fitting portion 72 is fitted with the screw insertion hole 78 of the web portion 70 of the fitting member 42.
And then the flat head screw 56 is screwed into the screw hole 58 of the outer ring 24-2 and tightened. At this time, by forming the screw insertion hole 78 of the web portion 70 in the countersink hole as shown in the drawing, the countersunk screw 56 does not protrude from the web portion 70.

Next, the outer peripheral edge 84 of the grease cover 82 is press-fitted into the inner peripheral edge 80 of the web portion 70 of the fitting member 42 and held.

The mounting member 38 of the output shaft 22 is fitted to the output shaft fitting portion 74 of the flange portion 68 of the fitting member 42 mounted on the outer ring 24-2. At this time, while fitting the fitting member 42 protruding from the web portion 70 of the fitting member 42 into the fitting hole 66 formed in the mounting member 38,
The mounting member 38 is fitted to the output shaft fitting portion 74. By this fitting, the bolt through hole 54 of the outer ring 24-2, the bolt insertion hole 76 of the fitting member 42, and the bolt screw hole 64 of the mounting member 38 are aligned,
The mounting bolt 52 can be tightened by inserting the bolt through hole 54 of the outer ring 24-2 and the bolt insertion hole 76 of the fitting member 42 into the bolt screw hole 64 of the mounting member 38.

In this way, the propeller shaft 8 that communicates with the output shaft 22 of the power distribution device 6 that is the transmission-side output shaft is interposed between the outer ring 24-2 of the front joint 24 and the mounting member 38 of the output shaft 22. The provided fitting member 42 can be easily fitted by fitting the fitting member 42 to the outer ring 24-2 and the fitting member 38, respectively. It can also be used for other models. For this reason,
The mountability can be improved and the versatility can be improved, and the size can be reduced.

Further, the fitting member 42 is provided without directly mounting the mounting member 38 of the output shaft 22 to the outer ring 24-2 of the front joint 24, and the grease cover 82 seals the ball 24-4 portion, Lubricant such as grease is unlikely to leak, and the sealability can be improved. Moreover, when the grease is injected, the grease can be injected by removing the fitting member 42, so that the injection work can be easily performed.

Further, the fitting member 42 is provided with the fitting member 46 that is fitted into the fitting hole 66 of the mounting member 38 of the output shaft 22.
The rotation direction and the rotation center of the output shaft 22 and the front propeller shaft 8-1 can be matched. Therefore, the mounting accuracy can be improved. Further, as shown in FIG. 2, by making the rotation direction and the rotation center coincide with each other, as shown in FIG.
The output shaft fitting portion 74 on the other side of the flange portion 68 can be eliminated. As a result, the material can be saved and the weight can be reduced.

In this embodiment, the front propeller shaft 8-
1 has been described as being attached to the output shaft 22 of the power distribution device 6 by the front joint 24, but the same configuration is also applicable when the rear propeller shaft 8-2 is attached to the input shaft 30 of the rear final reduction gear 10 by the rear joint 28. Therefore, the same action and effect can be obtained, and thus the description thereof will be omitted.

[Effect of device]

As described above, according to the present invention, the inner ring and the outer ring of the propeller shaft that connect the transmission-side output shaft and the final reduction gear-side input shaft, and the balls held by the cage between the inner ring and the outer ring are provided. The fitting member interposed between the outer ring of the joint and the mounting member of each shaft may be fitted to the outer ring and the mounting member to facilitate the mounting, and the mounting flange may be protruded from the outside. It can also be used for other models without any problems. Therefore, the mountability can be improved and the versatility can be improved, and the size can be reduced.

Further, since the fitting member is provided on the outer ring of each joint without directly mounting the mounting member for each shaft, the lubricant such as grease is unlikely to leak and the sealing performance can be improved. Further, the grease injection work can be easily performed.

Further, since the fitting member is provided so as to be fitted into the mounting member of each shaft, the rotation direction and the rotation center of each shaft and the propeller shaft can be easily and surely matched. Therefore, the mounting accuracy can be improved.

[Brief description of drawings]

1 to 6 show an embodiment of the present invention, FIG. 1 is a half sectional view of a joint portion, FIG. 2 is a half sectional view of a joint portion showing another embodiment, and FIG. FIG. 4 is a front view of the member, FIG. 4 is a cross-sectional view of a main part of the joint portion, FIG. 5 is a perspective view of the joint portion, and FIG. 6 is a schematic explanatory view of the power transmission system. In the figure, 2 is a transmission, 4 is a front final reduction gear, 6 is a power distribution device, 8 is a propeller shaft, 8-1 is a front propeller shaft, 8-2 is a rear propeller shaft, and 10 is a rear final reduction gear. , 22 is the output shaft of the power distribution device 6, 24 is the front joint,
26 is an intermediate joint, 28 is a rear joint, 24-1, 26-1, 28-1 is an inner ring, 24-2, 26-2, 28-2 is an outer ring, and 24-4, 26-4, 28-4 are Ball, 30 is the input shaft of the rear final reduction gear 10, 38 and 40 are mounting members,
42/44 is a fitting member, 46/48 is a fitting member, 66 is a fitting hole, 68
Is a flange portion, and 70 is a web portion.

Claims (1)

[Scope of utility model registration request] Claim: What is claimed is: 1. A propeller shaft for connecting a transmission-side output shaft and a final reduction gear-side input shaft, wherein each shaft is formed by a joint consisting of an inner ring and an outer ring, and a ball held by a cage between the inner ring and the outer ring. In the propeller shaft mounting structure for mounting the mounting member, a fitting member for fitting the outer ring and the mounting member is provided between the outer ring of each joint and the mounting member of each shaft. A fitting structure for a propeller shaft, wherein a fitting member fitted into the fitting member is provided on the fitting member in a protruding manner.