JP2000283178A - Clutch booster mounting structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a clutch booster mounting structure capable of corresponding to production in small quantities. SOLUTION: This mounting structure is furnished with a bracket 40 to be fastened on a clutch housing, a flange 50 to be fixed on a side surface 42 of the bracket 40 and to which a clutch booster is fastened and a reinforcing plate 60 fixed on an end surface of the bracket 40, the reinforcing plate 60 is extended toward a back surface 50b of the flange 50, and an end surface of the reinforcing plate 60 is fixed on the back surface 50b of the flange 50.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improved clutch booster mounting structure.

[0002]

2. Description of the Related Art In a truck or the like, a clutch booster for driving a clutch by hydraulic pressure is provided outside a clutch housing (see Japanese Utility Model Laid-Open No. 6-54925).

Conventionally, there has been a bracket provided with a bracket for supporting a clutch booster in a clutch housing, and the bracket is integrally formed by press molding.

[0004]

However, when the bracket is integrally formed by press molding, there is a problem that it is difficult to reduce the weight. In addition, the initial cost is required to manufacture the press die, and the production of a small amount is required. There was a problem that it could not be handled.

[0005] The present invention has been made in view of the above problems, and has as its object to provide a clutch booster mounting structure that can cope with small-scale production.

[0006]

According to a first aspect of the present invention, there is provided a clutch housing for accommodating a clutch, a clutch booster for driving the clutch, a bracket fastened to the clutch housing, and a clutch booster fixed to a side surface of the bracket. And a reinforcing plate fixed to the end surface of the bracket, the reinforcing plate is extended toward the rear surface of the flange, and the end surface of the reinforcing plate is fixed to the rear surface of the flange.

According to a second aspect of the present invention, in the first aspect, a support portion is formed on the flange by bending an end of the flange to abut on the bracket.

According to a third aspect of the present invention, in the first or second aspect, a notch is formed at an intersection of the reinforcing plate and the bracket, and the reinforcing plate is in contact with an end portion and a side surface of the bracket with the notch therebetween. And

According to a fourth aspect of the present invention, in the vehicle according to any one of the first to third aspects, the shift linkage for transmitting the operation force of the change lever to the transmission is arranged around the clutch housing. And a second rod, and a relay lever that connects the first rod and the second rod is provided, and the relay lever is swingably connected to the bracket.

[0010]

In the first aspect of the present invention, the reinforcing plate functions to increase the rigidity of the bracket itself and to increase the coupling rigidity of the flange to the bracket. Therefore, the supporting rigidity of the clutch booster is sufficiently ensured, and The weight is reduced.

Since the bracket is provided with the reinforcing plate divided, the press working is facilitated, and the bracket can be adapted to small-quantity production.

In the second aspect of the present invention, by forming a support portion for bending the end portion of the flange to abut on the bracket, the rigidity of the connection of the flange to the bracket can be effectively increased, and the weight of each member can be reduced.

In the third aspect of the present invention, a notch is formed at the intersection of the reinforcing plate and the bracket, so that the reinforcing plate is brought into close contact with the bracket, the coupling rigidity of the reinforcing plate to the bracket is effectively increased, and the weight of each member is reduced. To be changed.

According to the fourth aspect of the present invention, the structure in which the first rod and the second rod are connected via the relay lever connected to the bracket increases the mounting position of the clutch booster and bypasses the shift linkage around the clutch housing. It becomes possible to arrange, for example, the air release work of the clutch booster becomes easy, and the productivity and the maintainability can be improved.

[0015]

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

1 and 2, reference numeral 8 denotes a right frame (side member) extending in the front-rear direction of the truck.
An engine (not shown) and a transmission (not shown) are provided side by side between frames 8 provided as a pair of left and right sides.
A driver's cab is provided above these.

In FIG. 1, reference numeral 1 denotes a clutch housing, and the clutch housing 1 is interposed between an engine and a transmission. A flywheel coupled to the output shaft of the engine is housed in the clutch housing 1 having a substantially cylindrical shape, and a clutch for connecting and disconnecting the output shaft of the engine and the input shaft of the transmission is housed therein.

A clutch booster 2 for driving a clutch is mounted outside the clutch housing 1. The clutch booster 2 causes the rod 11 to protrude by the hydraulic pressure guided thereto, whereby the lever 12 rotates and the clutch is disengaged.

In the figure, a line A connects an output portion of a change lever (not shown) and an input portion of the transmission, and 4 is a control-side shift linkage for transmitting the operation force of the change lever to the transmission.
Reference numeral 3 denotes a select-side shift linkage for transmitting the operation force of the change lever to the transmission. Each shift linkage 3, 4 is moved by operating a shift lever provided in the operator's cab, and the gear position of the transmission is changed. The control side shift linkage 4 is arranged on the left side of the clutch housing 1, and the select side shift linkage 3 is arranged on the right side of the clutch housing 1.

The clutch booster 2 is located on the line A on the right side of the clutch housing 1, and the select side shift linkage 3 also located on the right side of the clutch housing 1 is divided into a first rod 31 and a second rod 32. To bypass the clutch booster 2. The first rod 31 and the second rod 32 are connected via the relay lever 5. Then, a bracket 40 for supporting the clutch booster 2 is provided on the clutch housing 1, and the relay lever 5 is swingably connected to the bracket 40.

As shown in FIG. 3, four mounting seats 13 are formed at the upper, lower, left and right sides of the clutch housing 1 having a substantially cylindrical shape. The bracket 40 is fastened to the right upper mounting seat 13. Brackets (not shown) are fastened to the left and right lower mounting seats 13, respectively, and the brackets are supported by the vehicle body side cross member via an engine mount.

As shown in FIG. 4, the bracket 40 includes a housing-side connecting portion 41 fastened to the mounting seat 13, a booster support portion 42 to which the mounting flange 50 for the clutch booster 2 is fixed, and a housing-side connecting portion 41. Connecting portion 44 for connecting the relay lever 5 to the booster support portion 42;
And a lever support portion 43 that supports the rotation fulcrum of the above, and these are integrally formed by press working.

The housing-side connecting portion 41 comes into contact with the mounting seat 13 of the clutch housing 1 and is fastened via four bolts (not shown) screwed to the clutch housing 1.

The booster supporting portion 42 projects forward from the housing side connecting portion 41 via the connecting portion 44, and a flange 50 for the clutch booster 2 is fixed to the right side surface thereof by welding. A lightening hole 45 is opened at the front of the flange 50.

The flange 50 has a contact portion 51 with the clutch booster 2, and has a support portion 52 with both ends bent, and is fixed to the right side surface of the bracket 40 by welding from each support portion 52 to the contact portion 51. Is done.

The bracket 40 is connected to the housing side connecting portion 4.
1 and the connecting portion 44 and the booster supporting portion 42 are bent in a crank shape.

The reinforcing plate 60 is fixed by welding to the lower end surface of the housing side connecting portion 41, the lower end surface of the connecting portion 44, the right side surface of the booster support portion 42 and the back surface 50b of the flange 50.

A notch 47 is formed in the lower end surface of the bracket 40 at a position where the reinforcing plate 60 intersects. The notch 47 is formed at the lower end of the bent portion between the connecting portion 44 and the booster support portion 42, and connects the reinforcing plate 60 to the bracket 40.
It is designed to adhere to.

The operation is described below, with the above configuration.

When the clutch booster 2 is operated, the flange 5
A load is applied to 0 to try to defeat it, and the bracket 40
Is subjected to a load to bend this. Reinforcement plate 6
Since 0 serves to increase the rigidity of the bracket 40 itself and increase the coupling rigidity of the flange 50 to the bracket 40, these deformations can be sufficiently suppressed.

The flange 50 has a contact portion 51 for the clutch booster 2 and a pair of support portions 52 that are bent orthogonally from both ends of the contact portion 51.

Since the bracket 40 is provided with the reinforcing plate 60 divided, the press working becomes easy, and it is possible to cope with small-quantity production.

Since the flange 50 has the support portion 52 whose end is bent, the support portion 52 can also increase the coupling rigidity to the bracket 40.

The clutch linkage 2 is divided into a first rod 31 and a second rod 32, and the first and second rods 31 and 32 are connected via the relay lever 5 connected to the bracket 40. The shift linkage 3 can be arranged so as to bypass the clutch housing 1 while being arranged on the shortest path A on the right side of the clutch housing 1. By raising the mounting position of the clutch booster 2 in this manner, for example, the air bleeding operation of the clutch booster 2 becomes easy, and the productivity and the maintainability can be improved.

The second rod 3 with respect to the relay lever 5
By changing the connection position of 2, the vehicle can be used for a right-hand drive vehicle and a left-hand drive vehicle, and parts can be shared between the two vehicles.

[Brief description of the drawings]

FIG. 1 is a side view showing an embodiment of the present invention.

FIG. 2 is a perspective view of the same.

FIG. 3 is a perspective view of the same.

FIG. 4 is a perspective view of the same bracket.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Clutch housing 3 Shift linkage 5 Relay lever 8 Frame 10 Clutch booster 31 First rod 32 Second rod 40 Bracket 47 Notch 50 Flange 52 Support part 60 Reinforcement plate

Claims (4)

[Claims] 1. A clutch housing for accommodating a clutch, a clutch booster for driving the clutch, a bracket fastened to the clutch housing, a flange fixed to a side of the bracket and fastened to the clutch booster, and an end face of the bracket A clutch booster mounting structure, comprising: a reinforcing plate that is fixed to the flange, the reinforcing plate extending toward the rear surface of the flange, and the end surface of the reinforcing plate fixed to the rear surface of the flange. 2. The clutch booster mounting structure according to claim 1, wherein a support portion is formed on the flange by bending an end thereof to abut on the bracket. 3. The bracket according to claim 1, wherein a notch is formed at an intersection between the reinforcing plate and the bracket, and the reinforcing plate is in contact with an end and a side surface of the bracket with the notch therebetween. Clutch booster mounting structure. 4. A vehicle in which a shift linkage for transmitting an operating force of a change lever to a transmission is disposed around a clutch housing, wherein the shift linkage is divided into a first rod and a second rod, and the first rod and the second rod are connected. 4. The clutch booster mounting structure according to claim 1, further comprising a relay lever, wherein the relay lever is swingably connected to the bracket.