JPH084341Y2 - Reinforcement structure of transmission case - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of use] The present invention relates to a structure for reinforcing a coupling portion with a clutch case in a transmission case mounted on an automobile or the like.

[Conventional technology]

Generally, the transmission case as described above is often connected to an engine through a clutch case, and these are often integrally supported by a vehicle body (frame). In such a structure, since the joint portion between the transmission case and the clutch case receives a bending load and is easily bent and causes vibration, noise, etc., it is necessary to reinforce this portion. It

As a means for carrying out such a reinforcement, for example, in Japanese Utility Model Publication No. 54-
Japanese Patent No. 85625 discloses a structure in which a transmission case and a clutch case are connected by a supporting member having a shape bridging these, and an intermediate portion of the supporting member is fixed to a vehicle body constituent member via a mount rubber. Has been done. According to such a structure, it is possible to reinforce the connecting portion with a small number of parts.

[Problems to be solved by the device]

However, in the case of the above structure, since the intermediate portion of the support member having a shape bridging the clutch case and the transmission case is fixed to the vehicle body, the distance between the attachment portion to the vehicle body and the transmission case is relatively large. The support member and the transmission case are separated from each other and are connected to each other only at one place. Therefore, although the clutch case and the transmission case are connected and reinforced, there is a disadvantage in terms of strength in connection with the relatively heavy transmission case and the vehicle body.

In view of such circumstances, the present invention provides a transmission case reinforcement structure that can reinforce the joint portion between the clutch case and the transmission case with a simple structure and further enhance the connection strength between the vehicle body and the transmission case. The purpose is to provide.

[Means for solving the problem]

A reinforcing structure for a transmission case, which has a built-in transmission and is integrally joined to a clutch case, comprises a mount bracket extending in the axial direction of the transmission, and a reinforcing member, and is provided in the axial direction of the mount bracket. Both ends are joined and attached to a plurality of places on the outer surface of the transmission case at intervals in the axial direction, the mount bracket is fixed to a part of the vehicle body, and a reinforcing material attachment portion is formed on the mount bracket. One end of the reinforcing material is fixed to the reinforcing material mounting portion, and the other end of the reinforcing material is fixed to the clutch case by a connecting bolt between the clutch case and the engine, so that the reinforcing material and the mount bracket are interposed. The transmission case and the clutch case are connected.

[Action]

According to the above configuration, the transmission case is attached to the vehicle body via the mount bracket, and the transmission case is connected to the clutch case with a simple structure by using the mount bracket.

〔Example〕

 An embodiment of the present invention will be described with reference to the drawings.

In the figure, 1 is a transmission case, 2 is a clutch case, and the transmission case 1 is integrally joined to the clutch case 2 by bolts. The clutch case 2 is integrally connected to an engine body (not shown), and these three members are supported on a body frame (not shown) via mount rubbers.

A mount bracket 3 is attached to a predetermined portion of the transmission case 1. This mount bracket 3
Both ends thereof are bolted to a plurality of positions in the transmission case 1 at intervals in the axial direction of the transmission (vertical direction in FIG. 2). This mount bracket 3
Has horizontal plane mount mounting portions 3a, 3b, 3c, which are fixed to a part of the vehicle body through a mount rubber.

Further, in the middle portion of the mount bracket 3, a reinforcing material mounting portion that extends horizontally toward the clutch case 2 from substantially the same surface as the mount mounting portions 3a to 3c.
3d is integrally formed, and the reinforcing material mounting portion 3d and the clutch case 2 are connected by a reinforcing material 4. Specifically, one end of the reinforcing member 4 is fixed to the upper surface of the reinforcing member mounting portion 3d with a bolt 5, and the other end is fixed to the upper portion of the clutch case 2 with a bolt 6. A mountain-shaped rib 4a is formed on the portion for reinforcement.

Moreover, as the bolt 6, a bolt for connecting the clutch case 2 and the engine body is used. Therefore, the engine body, the clutch case 2, and the reinforcing member 4 are integrally fixed by the same bolt 6. It is in a state of

According to this structure, the transmission case 1 and the clutch case 2 are connected to each other via the mount bracket 3 and the reinforcing member 4, and the transmission case 1 is attached to the vehicle body via the mount bracket 3. With such a structure, the joint portion between the transmission case 1 and the clutch case 2 can be reinforced.

Moreover, by fixing the transmission case 1 to the vehicle body with the mount bracket 3, the reinforcing member 4 can be fixed as in the conventional case.
Compared with the structure in which the middle part of the
The strength of the connection between the car and the car body is even better. Further, since both ends of the mount bracket 3 are connected to the transmission case 1 at a plurality of places spaced apart in the axial direction of the transmission, the reinforcing material mounting portion 3d is provided in the middle portion of the mount bracket 3. In particular, it has a strength superior to the bending load applied to the joint between the transmission case 1 and the clutch case 2. In addition, the clutch case 2 and the engine body 1 are connected to the reinforcing member 4 and the clutch case 2.
Since the bolt 6 for connecting and is also used, the structure can be further simplified.

In the present invention, the shapes of the reinforcing material mounting portion 3d and the reinforcing material 4 may be appropriately set depending on the mounting location, the structure of the transmission case 1 and the clutch case 2, and the like.

[Effect of device]

As described above, according to the present invention, a mount bracket fixed to a part of a vehicle body is attached to a transmission case joined to a clutch case, and a reinforcing material attachment portion is provided on the mount bracket. Since the transmission case and the clutch case are connected by fixing both ends of the reinforcing material to the clutch case, the joint portion between the transmission case and the clutch case can be reinforced with a simple structure.

Moreover, by fixing the transmission case to the vehicle body via the mount bracket, the coupling strength between the transmission case and the vehicle body is superior to the conventional structure.
Further, since both ends of the mount bracket are connected to the transmission case at a plurality of positions spaced apart in the axial direction of the transmission, excellent strength can be obtained especially against bending load. Further, since the connecting bolt for connecting the clutch case and the engine is also used as the bolt for connecting the reinforcing member and the clutch case, the structure can be further simplified.

[Brief description of drawings]

FIG. 1 is a front view of a transmission case and a clutch case according to an embodiment of the present invention, and FIG. 2 is a plan view of the transmission case and the clutch case. 1 ... Transmission case, 2 ... Clutch case, 3 ... Mount bracket, 3d ... Reinforcing material mounting portion, 4 ... Reinforcing material, 6 ... Connecting bolt between clutch case and engine.

 ─────────────────────────────────────────────────── ─── Continuation of front page (72) Inventor Michito Maedo 3-1, Shinchi, Fuchu-cho, Aki-gun, Hiroshima Mazda Co., Ltd. (56) Bibliographic references Sho 54-85625 (JP, U) 60-79035 (JP, U)

Claims (1)

[Scope of utility model registration request] 1. A reinforcing structure for a transmission case, which has a built-in transmission and is integrally joined to a clutch case, comprising: a mount bracket extending in the axial direction of the transmission; and a reinforcing member. Both ends in the axial direction of the above are joined and attached to a plurality of places on the outer surface of the transmission case at intervals in the axial direction, the mount bracket is fixed to a part of the vehicle body, and a reinforcing material is attached to the mount bracket. A part is formed, one end of the reinforcing material is fixed to the reinforcing material mounting portion, and the other end of the reinforcing material is fixed to the clutch case by a connecting bolt between the clutch case and the engine. A reinforcement structure for a transmission case, characterized in that the transmission case and the clutch case are connected via a mount bracket.