JP6817833B2 - Air cleaner mounting structure in the vehicle - Google Patents

Description

The present invention relates to a mounting structure of an air cleaner in a vehicle.

An air cleaner is used as a set in the internal combustion engine, and this air cleaner is generally fixed by being sandwiched between a main body case that opens upward, a cap (lid case) that closes the main body case from above, and a main body case and a cap. It is provided with a filter element and a clip for holding the cap in a closed state, and the cap can be opened and rotated upward with one end thereof as a fulcrum. Therefore, the clip is arranged at the other end of the cap and the main body case.

As a method of rotatably attaching the cap to the main body case, there is also a method of connecting with a pin, but in Patent Document 1, one end of the cap and one end of the main body case are fitted to form a rotation fulcrum. A configuration is disclosed in which a portion is formed and the cap is moved from a direction orthogonal to the rotation axis so that the fitting portions of both are fitted to each other.

JP-A-2016-205356

In Patent Document 1, since a connecting member such as a pin is not required, the labor for assembling the cap can be reduced and the cost can be suppressed. However, as a result of examination by the inventors of the present application, it has been found that, depending on the structure of the vehicle, the cap may easily come off from the main body case when the filter element is replaced, which may make reattachment troublesome.

That is, in Patent Document 1, since the cap can be connected to the main body case by moving it while being overlapped with the main body case, when the filter element is replaced, the cap is pulled from the main body case when the cap is pulled toward you. In this case, if the engine room is large and the area around the air cleaner is open, it is easy to reattach the cap and there is no particular problem, but for example, the engine room is below the seat. If the opening area of the engine room is small and the rotation fulcrum of the cap is blocked by the components of the vehicle, as in the case of being formed in, the fitting portion cannot be visually recognized and the operator's hand. Once the cap was removed, it was very troublesome to reattach it.

When a person opens the cap upward and rotates it, the cap may be pulled unknowingly, but if the opening area of the engine room is small, when opening the cap when replacing the filter element, the cap tends to be pulled toward you. Therefore, the cap was likely to come off.

The present invention has been made in view of such a current situation, and it is intended to prevent the cap from coming off when the filter element is replaced with a simple structure while maintaining the ease of attachment which is an advantage of Patent Document 1. It is a thing.

The present invention is premised on a structure in which an internal combustion engine and an air cleaner are arranged in an engine chamber, and the air cleaner is
A main body case fixed to a vehicle or the internal combustion engine and opened substantially upward, a cap arranged so as to close the main body case from above and capable of opening and rotating upward with one end as a fulcrum, and the main body case. It is said that it is provided with a filter element sandwiched and fixed by a cap and a fixture that holds the cap in a closed state, and the fixture is arranged at a portion away from the rotation fulcrum of the cap. It has a basic configuration.

And in the above basic configuration
" One end of the cap and one end of the main body case are fitted with each other when the fitting portion serving as a rotation fulcrum of the cap is moved from the other end of the main body case to the one end side. , The cap is formed so as to be detached when the cap is moved from one end to the other end of the main body case .
Moreover, the cap and the internal combustion engine are connected by an elastic intake hose so that the intake hose resists the movement of the cap from one end to the other end of the main body case. In the state where the cap is opened and rotated, the elastic restoring force of the intake hose acts to maintain the fitted state of the fitting portion . "
The configuration is added.

In the present invention, the intake hose does not generate an elastic restoring force when the cap is not opened and rotated, and when the cap is pulled when the cap is opened and rotated, it acts as a resistance to the pull. The intake hose is attached in an elastically deformed state, and the cap is urged so as to be strongly fitted to the main body case, but any of these can be adopted.

Further, it is preferable that the intake hose is set so that the cap does not move at all or hardly moves even if the operator pulls the cap away from the main body case 7 with a certain force when replacing the filter element. The cap may be connected to an air cleaner hose that sends purified air to the intake system of the internal combustion engine as an essential intake hose, and another intake hose that returns excess supercharged air or blow-by gas to the air cleaner. In the present invention, at least one intake hose may be used to prevent the cap from coming off.

In the present invention, it is possible to prevent the cap from coming off from the main body case when the filter element is replaced by using an intake hose while using a simple fitting method for connecting the cap and the main body case. Therefore, that deviates cap during replacement of the filter element, it can be prevented without complicating the structure. Therefore, it is particularly beneficial when the air cleaner is placed in a tight space, such as when the engine compartment is formed below the seat.

It is a top view of the embodiment. It is a perspective view of an air cleaner. It is a top view of the air cleaner. It is a side view of an air cleaner.

Next, an embodiment of the present invention will be described with reference to the drawings. In the following embodiments, front-back and left-right wordings are used to specify the direction, and this direction is defined as the direction seen by the driver . The direction is clearly shown in FIG.

The present embodiment shows an example in which the internal combustion engine 2 is arranged in the engine room 1 formed below the seat. Therefore, the engine room 1 is open only to the front. In FIG. 1, the cylinder head 3 and the head cover 4 of the internal combustion engine 2 are displayed very simply.

The internal combustion engine of the present invention has three cylinders, and is arranged in a vertical posture with the crank axis oriented in the front-rear direction of the vehicle. Further, the cylinder bore axis is greatly inclined to a state close to horizontal. Therefore, the internal combustion engine of the present embodiment is an internal combustion engine of slant, Shirindahe' de 3 includes an intake side 3a having an intake port 5 is turned upward. In the plan view of FIG. 1, the side surface 4a on the intake side of the head cover 4 is displayed large and the top surface 4b is displayed small because of the large slant.

An air cleaner 6 is also arranged in the engine room 1. The air cleaner 6 is roughly arranged on the left side of the internal combustion engine 2. The air cleaner 6 is roughly square (square), and as shown in FIG. 4, the air cleaner 6 has a main body case 7 that opens upward, a cap (lid) 8 that closes the main body case 7 from above, and a main body case 7 and a cap. It is provided with a filter element 9 sandwiched between and held by 8. The filter element 9 has been known conventionally, and has a structure in which a filter medium made of paper or the like is held by a frame.

The main body case 7 and the cap 8 are made of resin, and groove-shaped flanges 10 and 11 are formed on the upper end edge of the main body case 7 and the lower end edge of the cap 8, respectively, and the filter elements 9 are formed by the flanges 10 and 11, respectively. It sandwiches the peripheral part of. Further, the main body case 7 is provided with three brackets 12, 13 and 14 projecting outward, and these brackets 12, 13 and 14 are components of the internal combustion engine 2 and a frame material of a vehicle (all of which are shown in the drawings). Not shown), either directly or via other brackets.

The air cleaner 6 has a substantially rectangular shape that is generally long in the front-rear direction in a plan view, and is fitted to the rear end portion (one end portion), which is a short side portion at the rear, for connecting the cap 8 so as to be rotatable upward. The parts 15 and 16 are formed. That is, as shown in FIG. 4, a pair of groove-shaped female fitting portions 15 opened in the direction of the front end portion (the other end portion) are formed in the rear end portion of the main body case 7, while the cap 8 is formed. A pair of front and rear male fitting portions 16 that fit into the female fitting portion 15 are projected rearward at the rear end portion (one end portion) , and the female fitting portion 15 is a female fitting portion. It fits in 15 so that it cannot move left and right.

The male fitting portion 16 is adapted to fit into the female fitting portion 15 by moving the cap 8 backward. That is, the cap 8 is attached to the main body case 7 by moving from a direction orthogonal to the rotation axis 24. Further, by forming the male fitting portion 16 into a horizontal trapezoidal shape in which the vertical width becomes smaller toward the tip, the cap 8 can be opened and rotated upward with the male fitting portion 16 as a fulcrum. It is allowed. Therefore, the cap 8 can be opened and rotated upward with the rear end as a fulcrum.

The left and right longitudinal side surfaces of the cap 8 are fixed to the main body case 7 by two metal plate clips 17 on the left and right at a portion (the other end) near the front end. The clip 17 is an example of a fixture, and a finger hook portion 17a is integrally provided on the upper end of the C-shaped main body. At the lower end of the clip 17, a lower bearing that fits into the support shaft portion formed in the main body case 7 is formed. Further, a jaw portion that comes into contact with the flange 11 of the cap 8 from above is formed at the upper end portion. After moving the finger hook 17a outward to unlock it, as shown by two points in FIG. 4, when the cap 8 is opened upward to some extent and rotated, the filter element 9 is removed or inserted. Can be (replaceable). Fixtures such as clips 17 can also be provided on the short side portion on the free end side.

An air introduction port 18 is projected downward from the lower surface of the main body case 7, and an air introduction duct 19 is connected to the air introduction port 18. On the other hand, the cap 8 is formed with an intake / discharge port 20 and an air bypass inlet 21 for returning supercharged air, and an air cleaner hose (main intake hose) 22 is connected to the intake / discharge port 20 to provide an air bypass. An air bypass hose 23 is connected to the inlet 21. Both hoses 22 and 23 are included in the intake hose.

The intake / discharge port 20 is provided at the upper corner of one of the longitudinal sides of the cap 8 so as to be inclined outward in a plan view with respect to the rotation axis 24 of the cap 8. Is formed in. Then, the air cleaner hose 22 changes its direction downward and then changes its direction backward, and is fixed by the band 25 to a component (not shown) of the internal combustion engine 2 such as a compressor of a supercharger. There is.

Therefore, as shown by the alternate long and short dash line in FIG. 4, the air cleaner hose 22 is bent in a U-shape (or U-shape) with a forward opening when viewed from the side, but the air cleaner hose 22 is made of rubber or resin and is elastic. Since it is bent against it, as shown by the arrows in FIGS. 1 and 4, the elastic restoring force of the air cleaner hose 22 (the restoring force that tries to extend straight) acts to push the cap 8 backward. There is.

Therefore, when the filter element 9 is replaced, even if the operator unknowingly or accidentally pulls the cap 8 toward the front, the male and female fitting portions 15 and 16 between the cap 8 and the main body case 7 will not come off ( The elastic restoring force of the air cleaner hose 22 is set to such a strength that the cap 8 cannot be removed with a light force.) As a result, the cap 8 can be prevented from coming off when the filter element 9 is replaced, and the filter element 9 can be replaced quickly.

When the air cleaner hose 22 is bent into a forward-opening U-shaped posture as in the embodiment, the tip of the cap 8 is pushed upward by the elastic restoring force of the air cleaner hose 22. Therefore, the air cleaner hose 22 is used to push the cap 8 upward. Can be opened and held in a rotating posture. Therefore, the operator does not need to hold the cap 8 in the open state with one hand, and can pull out and fit the filter element 9 by using both hands. Therefore, the replacement work of the filter element 9 can be performed more easily. This point is one of the great advantages of this embodiment.

As shown in FIG. 1, the air bypass inlet 21 projects downward from the overhanging hollow portion 27 provided at the rear portion of the other longitudinal side surface of the cap 8, and the air bypass hose 23 is L so that the lower portion thereof faces toward the front. It is bent in shape. The downstream end of the air bypass hose 23 is connected to an air bypass valve (ABV, not shown). The air bypass hose 23 has a little resistance to the opening rotation of the cap 8, but is not as effective as pushing the cap 8 backward. However, it is possible to push the cap 8 backward by the elastic restoring force of the air bypass hose 23 by bending it like the air cleaner hose 22.

As shown in FIG. 1, a ventilation hose 28 for sending fresh air to the valve chamber and returning blow-by gas to the intake system is connected to the downstream end of the air cleaner hose 22 depending on the presence or absence of supercharging. ing. It is also possible to connect the ventilation hose 28 to the cap 8 and push the cap 8 backward by the elastic restoring force of the ventilation hose 28. Further, it is also possible to push the cap 8 in a direction in which the fitting with the main body case 7 is maintained by a plurality of intake hoses such as the air cleaner hose 22, the air bypass hose 23, and the ventilation hose 28.

As shown in each figure, a chamber 29 for eliminating pulsation in which the intake air of the diaphragm type control device for controlling the wastegate valve of the exhaust turbocharger is collected is provided on the front surface of the main body case 7. Further, as shown in FIG. 2, a holder 30 for holding the air bypass hose 23 is provided at one corner on the front side of the outer circumference of the main body case 7.

In the present embodiment, the male fitting portion 16 is formed on the cap 8 and the female fitting portion 15 is formed on the main body case 7, but the fitting portions may have the opposite relationship. Further, various forms can be adopted for the fitting portion, such as forming the male fitting portion in the shape of a round bar and forming the female fitting portion in a sideways U shape. Further, the fixture can adopt various modes and structures such as one in which a hook is provided on rubber. May I wire-made or resin der.

The invention of the present application can be embodied in an internal combustion engine. Therefore, it can be used industrially.

1 Engine room 2 Internal combustion engine 3 Cylinder head 4 Head cover 6 Air cleaner 7 Main body case 8 Cap 9 Filter element 10, 11 Flange 15 Female fitting part 16 Male fitting part 17 Clip as an example of fixture 20 Intake outlet 21 Air bypass inlet 22 Air cleaner hose as an example of intake hose 23 Air bypass hose 24 Rotation axis of cap

Claims (1)

An internal combustion engine and an air cleaner are placed in the engine room.
The air cleaner includes a main body case fixed to the vehicle or the internal combustion engine and opened substantially upward, a cap arranged so as to close the main body case from above and capable of opening and rotating upward with one end as a fulcrum. It is provided with a filter element sandwiched and fixed between the main body case and the cap, and a fixture for holding the cap in a closed state.
The fixture is configured to be arranged at a portion away from the rotation fulcrum of the cap.
At one end of the cap and one end of the main body case, fitting portions that serve as rotation fulcrums of the cap are fitted to each other when the cap is moved from the other end of the main body case to the one end side. The cap is formed so as to be detached when the cap is moved from one end to the other end of the main body case .
Moreover, the cap and the internal combustion engine are connected by an elastic intake hose so that the intake hose resists the movement of the cap from one end to the other end of the main body case. In the state where the cap is opened and rotated, the elastic restoring force of the intake hose acts to maintain the fitted state of the fitting portion .
Installation structure of the air cleaner in the vehicle.

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