JPS637535Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to an improvement in a differential mounting structure for attaching a differential to an automobile body.

FIG. 1 shows the installed state of the differential (differential unit), and 1 is the differential main body. The differential main body 1 is provided with a connecting portion 3 with the propeller shaft 2 at one end in the longitudinal direction of the vehicle, and connecting portions 4 and 5 with the axle on both sides of the other end in the longitudinal direction of the vehicle. An outer tube 6 that covers the axle is connected to the left side of the axle connection part 4 in FIG. Further, a first mounting portion 7 is integrally provided on one end side of the differential main body 1 in the longitudinal direction of the vehicle body. Furthermore, a first bracket 8 is attached to the tip of the outer tube 6, and a second bracket 9 is attached to the end of the differential main body 1 in the other direction in the longitudinal direction of the vehicle body, on the side opposite to the outer tube 6 side. The first bracket 8 has a second mounting part 10 extending from the tip of the outer tube 6 in the other direction in the longitudinal direction of the vehicle body, and the second bracket 9 has a differential main body 1 mounted at a height position corresponding to the second mounting part 10. A third mounting portion 11 is provided that extends in the other direction in the longitudinal direction of the vehicle body from the other axle coupling portion 5 side on the other end side in the longitudinal direction of the vehicle body. And, the differential main body 1 has these first,
It is attached to first and second cross members 12 and 13 on the vehicle body side by means of second and third attachment portions 7, 10 and 11 via rubber mounts.

However, in the case of the above-mentioned conventional configuration, a large reaction torque acts on the differential main body 1 during sudden starting or sudden braking, so when increasing the output of the engine, the first There was a problem in which the thickness of the second brackets 8, 9, etc. had to be increased, or the rigidity of the mount rubber had to be increased.

Therefore, as shown in Figure 2, the outer tube 6
A third bracket 1 extends from a position corresponding to one end side of the differential main body 1 in the vehicle longitudinal direction to a position corresponding to the other end side in the vehicle longitudinal direction.
4, and the third bracket 14 is provided with a second mounting portion 15 which is spaced apart from the third mounting portion 11 of the second bracket 9 along the vehicle width direction, and a differential main body. A fourth mounting portion 16 is provided in a spaced manner corresponding to the first mounting portion 7 of the first mounting portion 7 along the vehicle width direction, and each of these first, second, third, and fourth mounting portions 7,15,1
It is also conceivable to attach the differential main body 1 to each of the first and second cross members 12 and 13 by means of rubber mounts 1 and 16 to increase the support strength of the differential main body 1. However, in this case, the third bracket 14 interferes with each of the first and second cross members 12 and 13 when the differential main body 1 is attached or detached from below the vehicle body, making it difficult to attach or detach the differential main body 1. In addition, as shown in FIG.
, the fourth mounting portion 16 and the first cross member 12
Since the distances b between the two were different from each other, there was a problem in that when a large reaction torque was applied to the differential main body 1, the differential main body was likely to be twisted.

This idea was made in consideration of the above circumstances, and its purpose is to easily reinforce the support strength of the differential gear body when increasing the engine output, and to make it easy to attach and detach the differential gear body. Another object of the present invention is to provide a differential mounting structure that can prevent the differential main body from twisting even when a large external force is applied to the differential main body.

An embodiment of this invention will be described below with reference to FIGS. 4 to 7. Note that the same parts in FIGS. 4 to 7 as in FIGS. 1 to 3 are given the same reference numerals, and their explanations will be omitted. That is, this invention attaches an additional bracket 26 of a simple configuration to the existing three-point support type differential main body 1 as shown in FIG. This realizes a point support structure. This additional bracket 26 is provided with first and second structural members 23 and 24, as shown in FIGS. 5 and 6. In this case, the first component 23 has a pair of bent pieces 21a, 21 bent into a substantially L-shape.
b is formed, and the second component 2
Similarly, a pair of bent pieces 22a and 22b which are bent into a substantially L-shape are also formed on the side of the cover 4. Then, as shown in FIG. 6, the bent pieces 21b and 22b of one of the first and second structural members 23 and 24 are joined by means such as welding while facing each other to form a fourth member. A mounting portion 25 is formed. Further, the bent pieces 21a and 22a forming the base end of the additional bracket 26 position the fourth mounting portion 25 on one side in the longitudinal direction of the vehicle body, and at the same height as the first mounting portion 7. They are each removably attached to the outer tube 6 together with the second attachment portion 10 in a matched state. The differential main body 1 is attached to each of these first, second, third, and fourth mounting portions 7, 10, 1.
It is attached to the vehicle body side via 1 and 25. Further, the flange portion 6a of the outer tube 6 has four mounting holes 2 for mounting the first bracket 8.
7, 28, 29, and 30 are provided, respectively. Further, the bent piece 21a of the first component 23 of the additional bracket 26 has a mounting hole corresponding to the mounting hole 27 of the flange portion 6a, and the second component 2
The mounting hole 2 of the flange portion 6a is provided in the bent piece 22a of No. 4.
Mounting holes 8 and 29 are provided respectively, and the mounting holes 27, 28, 29 of the flange portion 6a
The first bracket 8, the flange portion 6a of the outer tube 6, and the additional bracket 2 are connected by bolts 31 and nuts 32 at corresponding locations.
6 are connected to each other. .

Therefore, in the case of the above structure, an additional bracket 26 is attached to the inside of the flange portion 6a of the outer tube 6, and the differential main body 1 is attached to each of the first, second, third, and fourth mounting portions 7, 10, 11. , 25, the support strength of the differential main body 1 can be increased compared to a three-point mount support structure. Furthermore, additional bracket 26
are a pair of bent pieces 21a, 2 bent into a substantially L-shape.
1b and 22a, 22b are formed by the first and second component members 23 and 24, which are easy to manufacture, low cost, and can increase the output of the engine body. In this case, the support strength of the differential main body 1 can be easily reinforced. Furthermore, the additional bracket 26 has one bent piece 21b, 2 of both the first and second structural members 23, 24.
Since the fourth mounting portion 25 with the brackets 2b facing each other is provided and is fixed to the outer tube 6 by the remaining bent pieces 21a and 22a, the rigidity of the additional bracket 26 as a whole can be increased. Also,
Since the fourth mounting part 25 of the additional bracket 26 is installed in a state corresponding to the height position of the first mounting part 7, there is no possibility that a large reaction force will be applied to the differential main body 1 during a sudden start or sudden braking. Even when torque is applied, the load distribution between the first and fourth mounting portions 7 and 25 and between the second and third mounting portions 10 and 11 can be made substantially uniform, and the differential main body It is possible to reliably prevent the twisting described in step 1. Further, since the additional bracket 26 can be easily attached to and detached from the flange portion 6a of the outer tube 6, the existing support structure can be easily reinforced when increasing the engine output, and the It is also possible to facilitate attachment/detachment work. Furthermore, as shown by the imaginary line in FIG.
Even when the additional bracket 26 is disposed above the additional bracket 26, the additional bracket 26 can be easily removed from the flange portion 6a of the outer tube 6, so that maintenance of the engine 33 can be performed easily.

It should be noted that this invention is not limited to the above-mentioned embodiments, and it goes without saying that various modifications can be made without departing from the gist of this invention.

As explained above, according to this invention, the first and second structural members are formed by bending a pair of bent pieces into a substantially L-shape. An additional bracket for reinforcement is provided with a fourth mounting portion formed by joining one bent piece of both structural members facing each other, and a base end portion formed by the other bent piece. With the fourth mounting part of the additional bracket located on one side in the longitudinal direction of the vehicle and corresponding to the height position of the first mounting part, the base end of the additional bracket is attached together with the second mounting part. The two bent pieces that form the outer tube are each removably attached to the outer tube, forming a four-point support structure that supports the differential body at four points, making it easy to increase the support strength of the differential body when increasing engine output. It has various effects such as being able to strengthen the differential body, making it easier to attach and detach the differential body, and preventing the differential body from becoming twisted even when a large external force is applied to the differential body. play.

[Brief explanation of the drawing]

Fig. 1 is a plan view of the main part showing a conventional example, Figs. 2 and 3 show a conventional example different from Fig. 1, Fig. 2 is a plan view of the main part, and Fig. 3 is a plan view of the main part. Figure 2 is a sectional view taken along the - line, and Figures 4 to 7 show an embodiment of this invention. Figure 4 is a plan view of the main part, and Figure 5 explains the installation work of the additional bracket. FIG. 6 is a perspective view showing an additional bracket, and FIG. 7 is a side view showing an attached state of the additional bracket. 1...Differential main body, 2...Propeller shaft,
6... Outer tube, 7... First mounting part, 1
0...Second attachment part, 11...Third attachment part, 2
1a, 21b, 22a, 22b... bending piece, 23
...first component, 24...second component,
25...Fourth mounting part, 26...Additional bracket.

Claims (1)

[Scope of utility model registration request] A connecting portion with the propeller shaft is provided at one end in the longitudinal direction of the vehicle body, and a connecting portion with the axle is provided on both sides of the other end in the longitudinal direction of the vehicle body, and an outer tube that covers the axle is provided on the one axle connecting portion side. The connected differential body is connected to a first attachment part provided at the end of the differential body on the propeller shaft side, and a second attachment part provided extending from the tip of the outer tube in the other direction in the longitudinal direction of the vehicle body.
and a third mounting portion extending in the other direction in the longitudinal direction of the vehicle body from the other axle coupling portion side on the other end of the differential main body at a height corresponding to the mounting portion and the second mounting portion. Therefore, in the mounting structure of the differential to be mounted on the vehicle body side, the first and second structural members are each formed by a pair of bent pieces bent into a substantially L-shape, and these first, An additional reinforcement provided with a fourth attachment part formed by joining one bent piece of the second two structural members facing each other, and a base end part formed by the other bent piece. A bracket is provided, and the fourth mounting part of the additional bracket is located on one side in the longitudinal direction of the vehicle body, and is attached to the additional mounting part together with the second mounting part in a state corresponding to the height position of the first mounting part. Both bent pieces forming the base end of the bracket are removably attached to the outer tube, and the differential main body is attached to the first and second bent pieces.
A mounting structure for a differential, characterized in that the differential is mounted on a vehicle body side via second, third, and fourth mounting portions.