JPH053812Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a seal plate device which is held between the rear end of an oil pan and the front end of a clutch housing in an engine.

(Prior Art) Generally, in an engine, the center of the crankshaft located above the oil pan and the center of the clutch mechanism located within the clutch housing are located on the same axis, and open toward the front. There is a vertical difference between the lower edge of the approximately circular opening in the clutch housing and the approximately rectangular rear end (on the clutch housing side) of the oil pan, which has a shallow bottom to fully store engine oil. Not only that, but their shapes do not substantially match.

Therefore, as described above, a seal plate having a shape that substantially matches the lower edge of the opening of the clutch housing is sandwiched between the rear end of the oil pan and the front end of the clutch housing, and the seal plate is sandwiched between the rear end of the oil pan and the front end of the clutch housing. A device in which the lower end edge of the opening of the clutch housing located further below is completely covered has been known in the past (see Japanese Utility Model Application No. 60-3120).

In addition, an extending portion that substantially matches the shape of the lower edge of the opening of the clutch housing is formed at the rear end of the oil pan, and this extending portion extends downward from the rear end of the oil pan. There is also a clutch housing in which the front end of the clutch housing is directly attached so that the opening of the clutch housing can be completely covered without using a seal plate as described above (see Japanese Patent Application Laid-Open No. 87904/1983).

(Problem to be solved by the invention) By the way, the clutch mechanism in the clutch housing described above uses the frictional force generated by the pressing load of the spring when the power of the crankshaft is transmitted from the clutch cover to the pressure plate via the strap. After being transmitted to the clutch disc, it is transmitted to the input shaft side of the transmission.
However, in this case, when the clutch disk facings are pressed against the flywheel in order to transmit the power of the crankshaft to the input shaft side of the transmission, the clutch disk facings are worn out. There are problems caused by the main component, asbestos, scattering inside the clutch housing.
In other words, asbestos scattered inside the clutch housing gets entangled with grease, etc., while asbestos floating inside the clutch housing gets caught between the flywheel and the clutch disk. There was a request for a smooth discharge of substances into the atmosphere (outside the clutch housing).

Therefore, it is conceivable to provide a cutout in the lower end of the clutch housing that communicates with the atmosphere, but such a simple cutout would result in direct communication between the atmosphere and the inside of the clutch housing. When driving in the rain, there is a risk that rainwater that bounces back and dust that accompanies the driving wind in the atmosphere may enter the clutch housing through the atmosphere side communication part of the notch.

This invention was made in consideration of these points,
The purpose of this is to make appropriate improvements to the seal plate and the clutch housing or oil pan that faces the lower edge of the seal plate, so that the atmosphere side communication part and the clutch housing side communication part are aligned on a straight line. Provide a notch that does not
The purpose is to prevent dust such as rainwater and dust from entering the clutch housing, and to smoothly discharge dust such as asbestos within the clutch housing into the atmosphere.

(Means for solving the problem) In order to achieve the above object, the solution of the present invention provides a seal plate that is sandwiched between the rear end of the oil pan and the front end of the clutch housing in the engine. As a device, a concave groove is formed in at least one of the clutch housing and the oil pan facing the lower edge of the seal plate. A first notch portion communicating between the concave groove and the inside of the clutch housing is provided at the upper portion of the lower edge of the seal plate, and a second notch portion communicating the concave groove portion with the atmosphere is provided at the lower portion of the lower edge of the seal plate. In addition, the atmosphere side communication portion of the second cutout portion is set at a position where negative pressure generated by running wind acts.

(Function) With the above configuration, in the present invention, the inside of the clutch housing and the atmosphere are connected to the left and right at the top and bottom of the bottom edge of the seal plate, respectively, through the concave groove provided in the area opposite the bottom edge of the seal plate. Because they communicate through the offset first and second notches, the clutch housing side communication part of the first notch and the atmosphere side communication part of the second notch are not located on a straight line and are connected to each other by the crankshaft. Because it becomes a communication path of the shape,
It becomes difficult for rainwater splashed during driving in the rain and dust such as dust accompanying the driving wind in the atmosphere to enter the clutch housing through the atmosphere side communication part of the second notch.

In addition, as mentioned above, the atmosphere side communication part of the second notch is set at a position where the negative pressure generated by the running wind acts, so dust such as asbestos floating in the clutch housing is removed by the negative pressure. Asbestos is actively sucked out from inside the clutch housing into the atmosphere, and asbestos scattered inside the clutch housing gets tangled with grease and accumulates at the lower end of the clutch housing, and asbestos floating inside the clutch housing If it gets between the clutch disk and the clutch disk, the damage will be suppressed as much as possible.

(Example) Hereinafter, an example of the present invention will be described based on the drawings.

FIG. 1 shows an engine 1 to which a seal plate device according to an embodiment of the present invention is applied. The housing 4 is of a horizontal type installed on the right side of the engine 1. An oil pan 3 that opens upward is attached to the lower end of the skirt portion 2a of the cylinder block 2 of the engine 1. The oil pan 3 has a deep bottom part 3a having a predetermined depth formed on the left side in the installation direction, and has a deep bottom part 3a having a predetermined depth on the right side. A shallow bottom portion 3b having a depth approximately half that of the bottom portion 3a is formed. Further, an extending portion 3a extending downward is formed at the right end portion of the shallow bottom portion 3b of the oil pan 3.

Furthermore, a clutch housing 4 is provided at the right end of the cylinder head 2 and oil pan 3, and has a substantially circular opening 4a that opens to the left (towards the shallow bottom 3b). A clutch mechanism (not shown) is disposed within the clutch housing 4, and the clutch mechanism operates after power from a crankshaft (not shown) is transmitted from the clutch cover to the pressure plate via the strap. The friction force generated by the pressing load of the spring is transmitted to the clutch disk and then to the input shaft side of the transmission (not shown). As shown in FIG. 2, the cylinder head 2 is located between the right end (rear end) of the cylinder head 2 and oil pan 3 and the left end (front end) of the clutch housing 4. An annular seal plate 5 having an edge 5a that overlaps each other so that the shape of the right end of the oil pan 3 and the peripheral edge of the front end of the clutch housing 4 substantially match each other is mounted in a sandwiched state. It is being Note that the shape of the extending portion 3a of the oil pan 3 is formed in a semicircular arc shape so as to substantially match the shape of the lower end edge of the edge portion 5a of the seal plate 5.

Furthermore, as shown in FIG. 3, at the lower end of the periphery of the clutch housing 4, which is opposite to the lower end of the edge 5a of the seal plate 5,
A generally U-shaped concave groove 6 extending in the left-right direction is formed. Further, a first notch 7 is formed at the upper part of the lower edge of the seal plate 5 to communicate between one end side (the right side in FIG. 2) of the recessed groove 6 and the inside of the clutch housing 4. Further, at the bottom of the lower edge of the seal plate 5, the other end side (the left side in FIG. 2) of the concave groove 6 and the atmosphere (outward side) are provided.
A second notch 8 is formed that communicates with the two. The first notch 7 and the second notch 8 are provided at the lower end edge of the seal plate 5 so as to be offset from each other in the left and right directions.

Then, the second notch 8 of the seal plate 5
The atmosphere side communication section 8a is provided downstream of the clutch housing side communication section 7a of the first notch 7 with respect to the running wind A (solid line arrow) flowing from the front of the vehicle on the atmosphere side. Negative pressure generated by the above-mentioned traveling wind A acts on the position where the atmosphere side communication part 8a of the two notches 8 is set.

Note that 9 is a bolt insertion hole provided in the edge 5a of the seal plate 5.

Therefore, in the above embodiment, the inside of the clutch housing 4 and the atmosphere are connected to the edge 5 of the seal plate 5.
The seal plate 5 is inserted through the concave groove 6 of the clutch housing 4 facing the lower end position (lower end edge) of a.
The clutch housing side communicating portion 7a of the first notch 7 and the second notch communicate with each other through a first notch 7 and a second notch 8 which are offset from each other to the left and right at the upper and lower lower edges of the first notch 7, respectively. Since it is not located in a straight line with the atmosphere side communication part 8a of No. 8, but is a crank-shaped communication path, rainwater that bounces off when driving in the rain and dust such as dust accompanying the driving wind A in the atmosphere can be absorbed. Second
It is difficult to penetrate into the clutch housing 4 immediately from the atmosphere side communication portion 8a of the notch 8. Furthermore, as mentioned above, since the atmosphere side communication part 8a of the second cutout part 8 is set at a position where the negative pressure generated by the running wind A acts, dust such as asbestos floating in the clutch housing 4 is removed. As shown by the broken line arrow, the negative pressure is actively sucked out from inside the clutch housing 4 into the atmosphere,
Asbestos, etc. scattered inside the clutch housing gets entangled with grease, etc., and the clutch housing 4
This will prevent asbestos from accumulating at the lower end of the clutch housing 4 or floating inside the clutch housing 4 from entering between the flywheel and the clutch disc. As a result, while preventing dust such as rainwater and dust from entering the clutch housing 4, the dust such as asbestos inside the clutch housing 4 is quickly released into the atmosphere by the negative pressure generated by the traveling wind A. It will be discharged.

In the above embodiment, the case where the concave groove 6 is formed in the clutch housing 4 has been described, but the concave groove may be formed in the extending portion of the oil pan facing the lower end position of the edge of the seal plate. or,
Of course, the concave grooves may be formed in both the clutch housing and the oil pan extension.

Further, in the above embodiment, the clutch housing 4
An annular seal plate 5 that covers the entire periphery of the opening 4a is used, but a semicircular seal plate that is held only between the extension of the oil pan and the lower end of the clutch housing is used. The same action and effect can be obtained.

Further, in the above embodiment, the case where the application is applied to a horizontally installed engine is described, but it may also be applied to a horizontally installed engine, and in this case, the position of the atmosphere side communication part of the second notch is It is necessary to set it so that negative pressure is generated depending on the direction of flow.

(Effects of the invention) As described above, according to the engine seal plate device of the present invention, the inside of the clutch housing and the atmosphere are connected to each other through the concave grooves at the upper and lower lower edges of the seal plate, respectively, through the first The notch and the second notch communicate with each other, and the atmosphere side communication part of the second notch is set at a position where the negative pressure generated by the running wind acts.
While making it difficult for dust such as rainwater and dust to enter the clutch housing, the dust such as asbestos in the clutch housing can be quickly discharged by the negative pressure generated by the wind while the vehicle is running.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention; FIG. 1 is a longitudinal sectional side view of an engine, FIG. 2 is a front view of a seal plate, and FIG. 3 is an enlarged view of the main parts of FIG. 1. 3... Oil pan, 4... Clutch housing, 5... Seal plate, 5a... Edge, 6...
...Concave groove, 7...First notch, 8...Second notch, 8a...Atmospheric side communication part, A...Travelling wind.

Claims (1)

[Scope of utility model registration request] A seal plate device in which a seal plate is sandwiched between a rear end of an oil pan and a front end of a clutch housing in an engine, the seal plate being sandwiched between at least one of the clutch housing and the oil pan facing the lower edge of the seal plate. A concave groove is formed in the seal plate, and the seal plate has a first notch at the upper part of the lower edge that communicates the concave groove with the inside of the clutch housing, and a first notch at the lower part of the lower edge that communicates the concave groove with the atmosphere. The vehicle is characterized in that the second notch portions are offset from each other to the left and right, and the atmosphere side communication portion of the second notch portions is set at a position where negative pressure generated by running wind acts. Engine seal plate device.