JP2585913Y2 - Automotive differential support device - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a supporting device for a vehicle differential which supports a differential (differential device) with sufficient strength while avoiding interference with a steering rack gear.

[0002]

2. Description of the Related Art As a first conventional example, there is an automobile in which a steering rack gear case extending left and right is supported on a cross member provided on left and right side frames.

[0003] Separately, as a second conventional example,
There is one in which a differential located behind the above-mentioned cross member is supported by the above-mentioned cross member by supporting means (Japanese Utility Model Laid-Open No. 61-73427).

[0004]

By the way, when the second conventional example is applied to the first conventional example, that is, an attempt is made to support the differential by the support means on the cross member supporting the rack gear case. Then, the rack gear case and the supporting means interfere with each other around the cross member, and there is a problem that it is difficult to support the differential.

[0005] Further, since the differential is heavy, it is desired to further improve the supporting strength of the differential.

[0006]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned circumstances, and makes it possible to easily support a differential on a cross member supporting a rack gear case, and to improve the supporting strength of the differential. The purpose is to let them.

[0007]

The feature of the present invention to achieve the above object is that the cross member supports the rack gear case and the cross member supports the differential by the supporting means. A support arm extending forward and upward from the front of the differential ;
It extends downward and its lower part is supported by the cross member.
Support body, and the support arm above the support body.
And a connector for connecting the protruding ends of the
Is positioned above the rack gear case and the cross
In the vicinity of the support portion of the member below the support body,
That is, the rack gear case is supported by the upper cross member .

[0008]

[Operation] The operation of the above configuration is as follows.

The rack gear case 7 is supported by the cross member 3, and the differential 12 is supported by the cross member 3
When the support means 22 is supported by the support arm 23, the support means
And the lower part of the cross member 3
A support body 24 to be supported and an upper part of the support body 24
On the other hand, a connector 2 for connecting the protruding end of the support arm 23
6 and 27, and this connecting tool is connected to the rack gear case.
The upper part of the cross member 3
In the vicinity of the lower support portion of the support body 24,
The rack gear case 7 is supported by the bar 3 .

That is, as described above, the connecting tool is
These rack gears are located above the case 7.
Interference between the case 7 and the connector is avoided, and
Of the supporting body 24 connected by this connecting tool.
The upper part and the protruding end of the support arm 23 are also the rack gear case.
7 are prevented from interfering with each other.

Therefore, the rack gear case 7 and the support
Interference with the holding means 22 is suppressed.

Also, as described above, the connecting tool is
These rack gears are located above the case 7.
The case 7 and the connector are compactly arranged in the front-rear direction.
The Rukoto.

Further , as described above, the cross member 3
In the vicinity of the lower support portion of the support body 24
The rack gear case 7 is supported by the cross member 3.
The cross member 3 and the rack gear case 7
Will also approach each other.

That is, the cross member 3 and the rack gear
The assembly constituted by the yam case 7 and the connecting tool
With each other in the direction
Press the differential 12 against the cross member 3 while avoiding interference.
The cross member 3
Before and after supporting means 22 supporting differential 12 with respect to
The dimension in the direction can be made shorter.

Therefore, the support means for supporting the differential 12
22 to reduce the load (bending moment)
Can be.

Moreover, as described above, the cross member 3
In the vicinity of the lower support portion of the support body 24
The rack gear case 7 is supported by the cross member 3.
Therefore, the following operation occurs.

That is, the cross member 3 is placed under the support main body 24.
Support the cross member 3
In the support portion of the main body 24, these two 3 and 24 complement each other.
By strengthening each other, the rigidity is improved. Because of this,
Near the support portion of the support body 24 in the cross member 3
At the same time, the above-mentioned steering
When the gear case 7 is supported, the rigidity of the support portion is improved.
Due to the above, the rigidity of the rack gear case 7 is improved.
It is.

[0018]

Embodiments of the present invention will be described below with reference to the drawings.

Reference numeral 1 in the figure denotes a vehicle body frame.
The arrow Fr indicates the front.

The vehicle body frame 1 has left and right side frames 2 and 2 extending in the front-rear direction. A cross member 3 is mounted on each of the front portions of the side frames 2, 2, and each end of the cross member 3 is fixed to the lower surface of the side frames 2, 2 by a bolt 4. The cross member 3 has a box-shaped cross section and has sufficient strength.

The steering apparatus of the automobile is of a rack and pinion link type, and has a rack gear case 7 supported on a support member 6 on the cross member 3. Have been. Left and right ends of the rack gear 8 are connected to corresponding left and right front wheels via tie rods and knuckle arms, respectively.

A rack and pinion 9 that meshes with the rack gear 8 and a pinion case 10 that supports the rack and pinion 9 are provided. The pinion case 10 is connected to the upper right surface of the rack gear case 7.

The input shaft of the rack and pinion 9 extends forward from the pinion case 10, and its front end is connected to a steering shaft located behind the pinion case 10 via a gear type interlocking means or the like.

The left and right front wheels are interlocked with the operation of the steering wheel attached to the steering shaft via the rack pinion 9 and the rack gear 8, so that steering in a desired direction can be performed.

A front differential 12 is provided between the side frames 2 and 2 behind the cross member 3. The differential 12 includes a differential carrier 13, an input shaft 14, and left and right output shafts 15, 15. The input shaft 14 is connected to the engine side, and each output shaft 15 is connected to a corresponding axle of the front wheel. ing.

A pair of left and right rear support means 17, 17 for supporting the rear portion of the differential 12 on the side frames 2, 2 are provided.
Is provided. Each of these support means 17 includes a sheet metal bracket 18 extending to the left and right.
One end of 8 is screwed to the differential carrier 13 by a bolt 19, and the other end is screwed to the cross member 3 by a bolt 21 via a buffer 20.

A front support means 22 for supporting the front portion of the differential 12 with the cross member 3 is provided. The support means 22 has a support arm 23 extending from a front portion of the differential carrier 13 toward a front upper direction.

On the other hand, a pair of left and right sheet metal support main bodies 24, 24 extending vertically and substantially forming a gate shape in side view are provided.
Have been killed . The front and rear ends of the lower portion of each support body 24 are respectively connected to the front and rear walls of the cross member 3 by bolts 2.
It is supported by the by that screwed to the 5. The above support arm 2
3 of overhangs positioned between the upper portion of each of the support body 24,
Connected to the upper parts of these support bodies 24, 24 by connecting tools
The coupling is constituted by a buffer 26 and a bolt 27.

In the above case, the connecting members 26 and 27 are
It is located above the gear case 7. Also on
The lower part of each support body 24 in the cross member 3
In the vicinity of the support portion of each bolt 25,
On the other hand, the rack gear case 7 is
Supported.

The differential 12 is provided with each of the support means 1 described above.
7 and 22 firmly support the vehicle body frame 1. The power input from the engine to the input shaft 14 is transmitted to the front wheels via the left and right output shafts 15 and 15 under the differential action of the differential 12.

The internal space 29 of each of the support bodies 24
Is a storage space for the rack gear case 7.
For this reason, when trying to support the differential 12 on the cross member 3 supporting the rack gear case 7, the support body 24 of the support means 22 is supported by the cross member 3 so as to fit outside the rack gear case 7. Is done.

In this way, the differential 12 can be supported on the cross member 3 without interfering with the rack gear case 7.

Further, as described above, the support main body 24 has a substantially gate shape in a side view, and has a sufficient strength.
Further, since the support arm 23 extends obliquely upward and forward from the differential 12 and supports the differential 12 in a suspended manner, it is possible to suppress the occurrence of bending stress in the support arm 23. Is done. Thus, the support arm 2
3 is achieved.

That is, the strength of the support means 22 is improved by the support arm 23 and the support main body 24 having the above-described structure, and thus the support strength of the differential 12 is improved.

[0035]

[Effect of the invention] According to the invention, the left and right side frames
A cross member is installed on the cross member.
Support the rack gear case for
The differential located behind the upper cross member is
Supporting device for a vehicle differential to be supported by a support means
At

[0036] The support means may be moved from the front to the front of the differential.
And a support arm extending in the vertical direction.
A supporting body whose lower part is supported by the cross member,
Connect the protruding end of the support arm to the upper part of the support body.
The rack gear case.
Position on the cross member, and
Near the support section at the lower part of the support body,
The rack gear case is supported .

That is, as described above, the connecting tool is
The rack gear case
Interference between the base and the coupling is avoided, and
The upper part of the support body and the support
The protruding end of the holding arm also interferes with the rack gear case
Is prevented.

Accordingly , the rack gear case and the support
The interference with the means is suppressed, and the rack gear case is supported.
The differential is more easily supported by the cross member
Can be

As described above, the connecting tool is
The rack gear case
The base and the coupling should be compactly arranged in the front-rear direction.
And

Moreover, as described above, the cross member
Near the support at the bottom of the support body
Because the rack gear case was supported by the member,
The cross member and the rack gear case are also close to each other.
The Rukoto.

That is, the cross member and the rack gear
The assembly consisting of the case and the coupling is in the front-back direction
, So that interference with this assembly
Keep the differential closer to the cross member while avoiding
The cross member can be diffed accordingly.
The length of the support means supporting the
Can be done.

Therefore, the support means for supporting the differential
Load (bending moment) can be reduced
Therefore, the differential support strength of the cross member
Is improved.

Moreover, as described above, the cross member
Near the support at the bottom of the support body
Make sure that the rack gear case is
Thus, the following effects also occur.

That is, the lower part of the support body is supported by the cross member.
The support body of this cross member.
In the holding part, these two will reinforce each other
Thus, the rigidity is improved. For this reason, the cross member
Near the support part of the support body
Support the rack gear case for steering
And the improvement of the rigidity of the support portion
The rigidity of the base is improved.

Therefore, when the steering operation is performed,
Even if the rack gear case is slightly bent by operating force,
The rattling is further suppressed,
Minute, the operation of the steering and the actual steering
It will be sure that they match,
A favorable operation feeling is improved.

[Brief description of the drawings]

FIG. 1 is a view taken along line 1-1 of FIG. 2;

FIG. 2 is a plan view.

FIG. 3 is a view taken in the direction of arrows 3-3 in FIG. 2;

FIG. 4 is a view taken along line 4-4 in FIG. 2;

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Body frame 2 Side frame 3 Cross member 7 Rack gear case 8 Rack gear 12 Diff 22 Support means 23 Support arm 24 Support main body 26 Buffer (connecting tool) 27 Bolt (connecting tool) 29 Internal space

Claims (1)

(57) [Scope of request for utility model registration] 1. A cross member is provided on left and right side frames, a steering rack gear case extending left and right is supported by the cross member, and a differential located behind the cross member is supported by the cross member by a support means. An apparatus for supporting a vehicle differential, comprising: a support arm extending upward and forward from a front portion of the differential; and a support arm extending vertically and having a lower portion extending downward.
The support body supported by the loss member and the support body
A connecting member for connecting the protruding end of the support arm to the
And place this coupling above the rack gear case.
Positioned below the support body in the cross member
In the vicinity of the support section,
An automotive differential support device that supports a gear case .