JP2000001125A - Power unit shifting control device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To satisfy distributability of impact force by disposing a stopper piece integrally provided with a reinforcement member on the rear side of a rigid member of a vehicle, and setting the relative positions of the stopper piece and the rigid member such that the stopper piece is received by the rigid member when a power unit is shifted forward. SOLUTION: A reinforcement member 15 is located substantially directly below a power unit 4, and at substantially a center portion of the power unit 4 in vehicle width direction. The reinforcement member 15 is connected at a substantially horizontal place with respect to a clutch housing 7, and to an inclined position with respect to an engine 5. A stopper piece 25 is disposed in vehicle width direction near a connecting point between the reinforcement member 15 and a change gear unit 6, with a longitudinal direction of the stopper piece 25 being in vehicle width direction. A general shape of the stopper piece 25 is strap-like, half of which is welded to the reinforcement member 15 and is disposed on a rear side of an engine mount member 11 of a vehicle rigid member 15 for controlling the shifting of the power unit 4. Accordingly, the impact force received by the stopper piece 25 is distributed in a wide range including the reinforcement member 15 and each portion of the power unit 4, avoiding local concentration of the impact force.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to suppressing a power unit including an engine and a transmission unit from moving forward when a vehicle collides.

[0002]

2. Description of the Related Art It is known that a power unit including an engine and a transmission unit is prevented from moving forward when a vehicle collides. When the power unit moves forward due to inertia, damage to nearby parts and vehicle body structures increases, and various measures have been taken. A representative example of this is the Shokai 63-18
No. 9721. Here, a hook member is fixed to each of the left and right lateral sides of the engine, while a stopper is fixed to the engine mount cross member, and the hook member is arranged behind the stopper, so that the hook member is provided when a vehicle collides. To prevent the engine from moving forward by being caught by a stopper. Further, it is disclosed that a plate material is protruded from an engine support bracket and a hook member is connected to the plate material. In other words, the hook member is fixed to a single plate material.

[0003]

By the way, in order to achieve such a movement preventing function, the above-mentioned hook member is firmly connected to the engine and the impact force from the hook member to the engine is reduced. Consideration must also be given to dispersibility. For that purpose, the shape and relative positional relationship of the related parts must be more rational. Furthermore, the above-mentioned dispersibility of the impact force must be satisfied by minimizing the number of parts. However, according to the above-mentioned prior art, the hook members are installed on both lateral sides of the engine, and the connecting portion of the hook member to the engine and the engaging portion of the hook member with the stopper are vertically separated. Therefore,
Although the hook members are arranged at two places on both sides, the structure is not satisfactory in terms of dispersibility of impact force. Furthermore, since the engine is stopped vertically, when the engine is stopped, a rotational force acts on the engine, and the engine may be inclined in an inadvertent direction, and the adverse effect on peripheral members is increased. . On the other hand, there are various types of mounting postures of the power unit. However, particularly, it has not been conventionally focused on successfully utilizing the inclination of the power unit.

[0004]

SUMMARY OF THE INVENTION The present invention has been provided to solve the above-mentioned problems. According to the first aspect of the present invention, the connecting portion between the engine and the transmission unit is provided with a reinforcing member. In the above-mentioned type, the stopper piece provided integrally with the reinforcing member is disposed behind the rigid member of the vehicle body, and the stopper piece is received by the rigid member when the power unit moves forward. The relative position between the stopper piece and the rigid member is set so that when the impact inertial force at the time of collision acts on the power unit, the stopper piece hits the rigid member of the vehicle body and the power -Suppress movement of units. At this time,
The impact force is widely distributed from the reinforcing member to each part of the power unit. The invention according to claim 2 is characterized in that, in claim 1, the longitudinal direction of the stopper piece is the same as the width direction of the vehicle body, and the rigid member of the vehicle body is also arranged in the width direction of the vehicle body. By setting such directionality to both members, the impact force can be reliably received.
According to a third aspect of the present invention, in the first aspect, the power unit is inclined and mounted on the vehicle body so that one reinforcing member is located substantially directly below the power unit and substantially in the center of the power unit when viewed in the vehicle width direction. Is characterized in that it is located at Therefore, depending on the installation position of the reinforcing member as described above, it is possible to suppress the movement of the power unit at or near the center of gravity of the power unit at one place, or on or near a line passing the center of gravity in the front-rear direction. Done. According to a fourth aspect of the present invention, in the first aspect, an engaging member is provided to prevent the stopper piece from passing above the rigid member, and the engaging member is fixed to the rigid member and the stopper member has It is characterized by protruding upward, and even if the above-mentioned upper passage is likely to occur, the engaging member functions to receive the stopper piece.

[0005]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail according to the illustrated embodiments of the present invention. The illustrated vehicle body configuration is a cab-over type. Alternatively, although not shown, a van type may be used. A packing box 2 is connected to a cabin 1, and a power unit 4 is arranged below the seat 3. The power unit 4 includes an engine 5 and a transmission unit 6,
The transmission unit 6 includes a clutch 7, a transmission 8, and an extension housing 9. An engine mount member 11 is firmly fixed to the chassis frames 10 and 10 in a state where the engine mount member 11 is installed in the vehicle width direction, and a part of the power unit 4 is mounted on the mount frames 12 and 1.
2 is supported. Engine mount member 1
Reference numeral 1 corresponds to one of the rigid members of the vehicle body. Also,
The rear end of the power unit 4 is supported by a cross member 13 via a mounting rubber 14. The reference numeral 7 indicates a clutch, but is also described as meaning a clutch housing.

In general, the engine 5 and the clutch housing 7 are directly bolted to each other, but a reinforcing member 15 is generally employed to further strengthen the joint. The reinforcing member 15 is provided between both side surfaces of the cylinder block of the engine and the transmission unit.
When the power unit 4 is greatly inclined as shown in FIG. 3, the reinforcing member 15 is located almost directly below the power unit 4 and substantially at the center of the power unit when viewed in the vehicle width direction. As described above, since the reinforcing members are arranged on both lateral side surfaces of the cylinder block, another reinforcing member is arranged at a position indicated by reference numeral 15a in FIG. 3 (not shown).

FIG. 2 and FIG. 4 are views of the automobile from directly above, and therefore, a power unit shown by a two-dot chain line,
In particular, the reinforcing member 15 is disposed below the engine 5, the clutch housing 7, and the like. The reinforcing member 15 is connected to a substantially horizontal portion with respect to the clutch housing 7 and is connected to an inclined portion with respect to the engine 5. Therefore, the reinforcing member 15 has a twisted shape. In FIG. 4, bolts are not shown, but holes for them are shown.

FIG. 5 is a cross section taken along the line (5)-(5) of FIG.
Since the engine 5 is inclined, the side surface of the cylinder block 16 is also inclined as shown in FIG. Bosses 17 are provided in the cylinder block 16 and the boss 1 is inserted through the holes 18.
Bolts 19 and 19 are firmly screwed into 7 and 17, and the front portion of the reinforcing member 15 is connected to the engine 5. The rear part of the reinforcing member 15 is connected to the front part of the clutch housing 7 and is connected to the pressure part 20 of the clutch housing 7. The wall portion 20 is provided to increase the rigidity of the open portion of the clutch housing 7. Holes 21, 2
2, the bolts 23 and 24 are screwed firmly into the wall portion 20, and the rear portion of the reinforcing member 15 is connected to the clutch housing 7.

FIG. 6 is a cross section taken along line (6)-(6) of FIG.
The stopper piece 25 is arranged in the vehicle width direction. The stopper piece 25 is provided near the position where the reinforcing member 15 is coupled to the transmission unit 6, that is, the wall portion 20, and its longitudinal direction is the vehicle width direction. The stopper piece 25 has a substantially strip shape, and approximately half of the stopper piece 25 is welded to the reinforcing member 15 as can be seen from FIGS. Code 35
Indicates this welded portion. As described above, the reinforcing member 15 is located substantially immediately below the power unit and substantially in the center of the power unit when viewed in the vehicle width direction. Therefore, the stopper piece 25 is located at the center of gravity of the power unit. Or near it, or on or near a line passing through the center of gravity.

The stopper piece 25 is arranged on the rear side of the engine mount member 11, which is a rigid member of the vehicle body. In this embodiment, the portions that abut against the engine mount member 11 are the portions indicated as reference portions 26 and 27. FIG. 8 is a section (8)-(8) in FIG. 4. The engine mount member 11 is formed by welding long members 28 and 29 having a substantially U-shaped cross section in a box shape.
The front end surface 31 of the portion 26 is in contact with the rear surface 30. The engagement member 32 made of a thick plate is fixed to the upper surface of the engine mount member 11 by welding, and the stopper piece 25
It protrudes to the upper side of the (hit portion 26) and extends near the hit portion 26. By doing this,
When the hitting portion 26 moves in an abnormal direction such as the arrow 33, the hitting portion 26 hits the lower surface of the engaging member 32, and the front end face 31 is prevented from hitting the rear face 30.

FIGS. 9 and 10 show the relationship between the stopper piece 25 and the engine mount member 11. The front end face 31 of the contact portion 26 is positioned slightly forward of the front end face 34 of the contact portion 27. FIG. It is. As a result, if the engine mount member 11 is deformed near the front end face 31 or the direction of the power unit 4 is slightly changed, the front end face 34 hits the rear face 30 and the movement is suppressed twice.

To understand the present invention more accurately, the following items are listed. The vehicle in this embodiment is a mini vehicle, and the engine is 660 CC. The inclination angle of the engine is 45 to 60 degrees with respect to the vertical line. The cylinder block 16 is made of cast iron, and the clutch housing 7 is made of an aluminum alloy. The reinforcing member 15 and the stopper piece 25 are formed by press-forming a steel plate having a thickness of 6 mm.
Further, it is also possible to make these members into cast products.

Although not described in the claims, the operational effects obtained from the specific configuration of the illustrated embodiment are as follows. That is, in the second aspect, the rigid member of the vehicle body is the engine mount member 11.
It is composed of By doing this,
Since the engine mount member itself is originally a member having extremely high rigidity, suppressing the movement of the power unit by relying on such a member provides a reliable and reliable suppressing function.

[0014]

According to the present invention, since the stopper member is provided integrally with the reinforcing member for reinforcing the connection between the engine and the speed change unit, the impact force received by the stopper member is large from the reinforcing member to each part of the power unit. It is dispersed in the area, and therefore can be dealt with rationally without the localization of the processing of the impact force. On the other hand, since the stopper piece is disposed on the rear side of the rigid member of the vehicle body, it is suitable for increasing the dependence on the rigid member and receiving a large impact force. And, as a component, only a small change of adding a stopper piece to an existing reinforcing member can be realized easily at low cost. At the same time, it is not necessary to make special modifications or the like to the rigid member on the vehicle body side, and the existing structure can be used, which is extremely advantageous in practical use. Since both the longitudinal direction of the stopper piece and the longitudinal direction of the rigid member are arranged in the vehicle width direction, the members for receiving the impact load in the front-rear direction correspond to each other in a long area, and therefore, are good in dealing with the impact force. It is. One of the reinforcing members is arranged so that one of the reinforcing members is positioned almost directly below the power unit and substantially in the center of the power unit when viewed in the vehicle width direction due to the inclined mounting of the power unit. Therefore, it is possible to position the stopper piece at or near the center of gravity of the power unit or on or near a line passing through the center of gravity of the power unit. The unit is not displaced in an abnormal direction, for example, in a direction in which the unit is rotated in a plan view.
Since the engaging member fixed to the rigid member is in a state of protruding above the stopper piece, regardless of the collision direction or the broken state, even if the stopper piece attempts to pass above the rigid member, The engaging member receives the stopper piece. Therefore, it is possible to suppress movement with high reliability only by adding simple small parts.

[Brief description of the drawings]

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

FIG. 2 is a plan view of the one in FIG.

FIG. 3 is a front view of that of FIG.

FIG. 4 is a plan view of a local portion of the present invention as viewed from above a vehicle, in which a power unit and an engine mount member are shown by two-dot chain lines.

FIG. 5 is a sectional view taken along line (5)-(5) of FIG. 4;

FIG. 6 is a sectional view taken along line (6)-(6) of FIG. 4;

FIG. 7 is a sectional view taken along line (7)-(7) of FIG. 4;

FIG. 8 is a sectional view taken along line (8)-(8) of FIG. 4;

FIG. 9 is a plan view showing the relationship between a single stopper piece and an engine mount member.

FIG. 10 is a front view of the one in FIG. 9;

[Explanation of symbols]

 Reference Signs List 5 engine 6 transmission unit 15 reinforcing member 25 stopper piece 11 rigid member, engine mount member 4 power unit 32 engaging member

Claims (4)

[Claims] 1. A vehicle in which a connecting portion between an engine and a transmission unit is reinforced by a reinforcing member, wherein a stopper piece provided integrally with the reinforcing member is disposed on a rear side of a rigid member of the vehicle body. A relative position between the stopper member and the rigid member is set so that the stopper member is received by the rigid member when the unit moves forward; 2. The power unit according to claim 1, wherein the longitudinal direction of the stopper piece is the same as the width direction of the vehicle body, and the rigid member of the vehicle body is also arranged in the width direction of the vehicle body. Movement control device. 3. The power unit according to claim 1, wherein the power unit is tilted and mounted on the vehicle body so that one reinforcing member is located substantially immediately below the power unit and substantially in the center of the power unit when viewed in the vehicle width direction. A power unit movement suppressing device characterized in that it is configured to perform the following. 4. An apparatus according to claim 1, further comprising an engaging member for preventing the stopper piece from passing above the rigid member, the engaging member being fixed to the rigid member and being provided above the stopper member. An apparatus for suppressing movement of a power unit, wherein the apparatus protrudes.