JPH08210201A - Air cleaner box with built-in electric equipment - Google Patents

Abstract

PURPOSE: To effectively cool whole electric equipment by a draft passing through inside an air cleaner by forming in an air cleaner case a double wall structure with built-in electric equipment. CONSTITUTION: A lower case 12 is provided with an electrical part storage unit 18 for storing electric equipment 17. A partition plate 23 partitioning the electric equipment storage unit 18 and a draft passage 24 is mounted inside the electric equipment storage unit 18 and the electric equipment 17 are fitted into the electric equipment storage unit 18. Thus because most of the circumferential surface of the electric equipment 17 stored inside the electric equipment storage unit 18 are exposed into the air current passed through a filter 22, sufficient cooling effect of electric equipment 17 by such air can be expected. Besides, because a space 21 is formed by the double wall around the electric equipment storage unit 18 storing the electric equipment 17, radiation heat of an engine, for example, in the exterior of an air cleaner box 30 is not easily propagated to the interior of the electric equipment storage unit 18 and, consequently, the heating of the electric equipment 17 can be effectively prevented.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air cleaner box with a built-in electrical component that is installed in the intake system of an automobile engine.

[0002]

2. Description of the Related Art As a conventional air cleaner box structure with a built-in electrical component, there is a structure as shown in FIGS. 5 and 6, for example.

To describe its specific structure, reference numeral 1 is an air cleaner box having an outside air intake port 2 and an exhaust port 3 to the engine. An air cleaner 4 is installed near the internal exhaust port 3 of the air cleaner box 1. ing. Further, on the bottom surface of the intake passage 5 formed between the outside air intake port 2 and the air cleaner 4 in the air cleaner box 1, for example, an electrical component 6 incorporating an electronic component having a large heat generation amount is attached, The electric component 6 is cooled by the air passing through the intake passage 5. The electrical component 6 is wired to various engine control detection sensors, actuators, etc. in the engine room.

[0004]

However, in such a conventional air cleaner with a built-in electrical component, the electrical component 6 attached to the intake passage 5 is exposed to the outside from the bottom surface of the intake passage 5. Therefore, the electric component 6 directly receives the high temperature engine radiant heat generated in the engine room, and due to this, the cooling effect of the electric component 6 is insufficient, and conversely, it is heated. There are problems that the quality is deteriorated by heating and the reliability of the operation is deteriorated.

The present invention has been made by paying attention to such a conventional problem, and an object thereof is to effectively cool the whole electric component by ventilation passing through the air cleaner. Aims to provide an air cleaner with a built-in electrical component, which has a structure that is highly waterproof and shock resistant.

[0006]

The present invention has been made in view of the above problems, and the present invention described in claim 1 is exposed to a filter and a ventilation passage in an engine intake system to be cooled. In the air cleaner box with a built-in electrical component having the electrical component, the air cleaner box with a built-in electrical component is configured by combining an upper case and a lower case, and the inside of the lower case has a double wall forming a space. By this, at least three front and left and right sides are surrounded, and a rear side is formed in the downstream air passage of the filter, and an electrical component storage portion is formed, and a part of the rear opening of the electrical component storage portion is formed. A displacement force generated on the inner wall forming the electrical component storage portion by the impact force from the front of the lower case, which faces the rear surface of the electrical component storage portion accommodated in the electrical component storage portion. It is broken and is characterized in electrical components internal of the air cleaner box provided with a shock absorbing plate portion having left and right sides a pair of brittle grooves allow rearward movement of the electrical components housed in the electric equipment housing portion.

According to a second aspect of the present invention, there is provided an electric component built-in air cleaner box having a filter and an electric component which is exposed to a ventilation passage in an engine intake system to be cooled. The box is configured by combining the upper case and the lower case,
Inside the lower case, a double wall forming a space is formed to surround at least the front and left and right sides in three directions, and the rear is opened to a downstream air passage of the filter. At the same time, a part of the rear opening of the electrical component housing is made to face the rear surface of the electrical component housed in the electrical component housing, and the electrical component housing is formed by the impact force from the lower case front thereof. A shock absorbing plate portion having a pair of left and right fragile grooves that breaks due to a displacement force generated in the inner wall and allows rearward movement of the electrical component housed in the electrical component housing portion is further provided. Inside the case, there is provided a wire harness outlet for drawing out a wire harness connected to electrical components to the outside of the air cleaner box, and the wire harness outlet is provided in the wire harness outlet. Electric components built in the air cleaner box provided with a guide wall forming the loosened portion of the V-shape wire harness is guided to the pull-out mouth is characterized.

[0008]

According to the first aspect of the present invention, a double-walled electric component built-in portion is formed in the case of the air cleaner, and the outside air is circulated in the electric component built-in portion. Therefore, the double wall structure of the case enhances the heat insulating effect of the electric component built-in portion, and further, the ventilation flowing in the electric component built-in portion can effectively cool the electric component. .

Furthermore, even if the air cleaner in the engine room receives an impact force due to a collision of the vehicle body or the like, it is possible to prevent damage to the electric components installed in the air cleaner.

According to another aspect of the present invention, the wire harness from the electrical component that is pulled out from the air cleaner case to the outside of the case is provided with a slack forming portion that forms a V-shaped slack portion in the air cleaner case. Therefore, it is possible to prevent moisture from entering the air cleaner case through the wire harness, thereby providing an air cleaner box having excellent waterproofness.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail below with reference to embodiments shown in the drawings.

1 to 4, 11 and 12 are
An upper case and a lower case of an air cleaner box that are combined vertically, and an outside air intake port 14 for connecting an outside air introduction duct 13 to a side surface of the upper case 11.
A wire harness outlet 15 is formed. The lower case 12 has an intake port 1 connected to the intake system of the engine.
6 is formed, and further in this lower case 12,
An electrical component housing portion 18 that houses the electrical component 17 is formed. A space 21 formed by a double wall of an inner wall 19 and an outer wall 20 is formed in the front portion and the left and right side portions of the electrical component housing portion 18.

Reference numeral 22 denotes a filter which is airtightly attached so as to close the opening of the lower case 12. Reference numeral 23 denotes a gate-shaped partition plate. The partition plate 23 has a pair of left and right inner edges. A fragile groove 25 is formed, and this pair of fragile grooves 2
The shock absorbing plate portion 31 is provided integrally with the partition plate 23 via the space 5. A slit 32 is provided between the upper end of the shock absorbing plate portion 31 and the upper edge of the partition plate. The rear end face of the inner wall 19, which is pressed to the right by the collision, abuts on the shock absorbing plate portion 31, and the electric component housing portion 1
8 protects the electrical components 17 stored in the vehicle 8 from collisions, and partitions the upper half of the electrical component storage 18 from the ventilation passage 24 to which the filter 22 is attached by the partition plate 23. Has become.

A packing 26, which is in airtight contact with the inner wall 19, is attached to the upper end of the electrical component 17. Reference numeral 27 is a wire harness pulled out from the electrical component 17, 28 is a guide wall provided in the upper case 11, and a V-shaped slack portion is provided in the wire harness 27 guided in the wire harness outlet 15. For forming 29.

The above is a description of the constituent members of the present embodiment. Next, the assembly of the air cleaner box will be described. Inside the electrical component housing portion 18 of the lower case 12 before the upper case 11 is attached, Electrical component storage 18 and air passage 2
A partition plate 23 for partitioning the space between the parts 4 and 4 is mounted, and then the electrical component 17 to which the packing 26 is attached is fitted into the electrical component housing portion 18.

Next, the filter 2 is placed in the opening of the lower case 12.
After attaching 2, the upper case 11 is mounted on the lower case 12, and the wire harness 27 drawn from the electrical component 17 is guided in the wire harness outlet 15 to form the slack portion. Then, the assembly of the air cleaner box 30 is completed.

Next, the operation will be described. The air sucked into the air cleaner box 30 through the outside air introducing duct 13 and the outside air intake port 14 passes through the filter 22 and enters the ventilation passage 24, and from the discharge port 16 of the engine. It is sent to the intake system. Since the air passage 24 is airtightly divided from the outside by the filter 22, the partition plate 23, and the packing 26, the external air that does not pass through the filter 22 is not discharged from the air outlet 16, and the air cleaner is effective. To function.

Further, since most of the outer peripheral surface of the electric component 17 accommodated in the electric component accommodating portion 18 is exposed in the flow of the air passing through the filter 22, the air is sufficient for the electric component 17. A cooling effect can be expected.

The periphery of the electrical component housing portion 18 for housing the electrical component 17 has a double wall structure, and since the space 21 is formed by the double wall, the space 21 forms the outside of the air cleaner box 30. Since the heat insulation between the electric component storage section 18 and the electric component storage section 18 is good, it is difficult for the radiant heat of the engine outside the air cleaner box 30 to propagate into the electric component storage section 18, so that the heating of the electric component is effective. Can be prevented.

Further, in the present embodiment, the storage part 1 for electrical components is
The rear end (right end surface in FIG. 2) of the surrounding inner wall 19 forming 8 is in contact with the shock absorbing plate portion 31 provided on the partition plate 23, and therefore is indicated by, for example, an arrow in FIG. As described above, when the front wall surface of the air cleaner box 30 is deformed by the impact force from the front of the vehicle body, the rear end of the inner wall 19 strongly presses the shock absorbing plate portion 31, and the weak groove 25 Since the electric component 17 can be moved to the position shown by the chain line, the electric component is not crushed by the pressing force (impact force) from the left side to the right side in FIG. 3, and the expensive electric component is damaged. Can be prevented and the repair cost in case of an accident can be reduced.

Further, in this embodiment, the wire harness 27 pulled out from the electric component 17 is desired to be loosened in a V shape by the guide wall 28 provided in the wire harness outlet 15 as shown in FIG. This V-shaped slack part 2
As a result, the moisture that has propagated through the wire harness 27 from the outside does not enter the air cleaner box 30, and the waterproof property is improved.

[0022]

As described above, according to the present invention, since the electric component housing portion 18 surrounded by the double wall forming the space is formed inside the air cleaner box, the electric component housing portion 18 is stored. The electric component 17 has a high heat shielding effect, and since the entire electric component is housed in the air cleaner box, the durability of the electric component is improved by the air-cooling action by the circulation action of the air flowing in the air cleaner box. Operation reliability is improved.

Further, since the partition plate 23 having the shock absorbing plate portion 3 is brought into face-to-face contact with the rear surface (rear surface) of the electric component 17 accommodated in the electric component accommodating portion 18, the electric component is caused by a collision of the vehicle body or the like. Even if an impact force is applied to the partition box, the partition plate will be broken and the electrical components will be air cleaner box 30.
Since it can be moved inward, damage to the electric component can be prevented.

Further, according to the present invention, the wire harness pulled out from the air cleaner box is formed into a V-shaped slack to prevent moisture from being transmitted through the wire harness and entering the air cleaner box. In addition, when the electric component 17 moves during a collision, this V-shaped slack allows the electric component to move and prevents the wire harness from breaking.

[Brief description of drawings]

FIG. 1 is a structural explanatory view showing an internal configuration of an air cleaner box of an embodiment of the present invention.

FIG. 2 is a perspective view showing constituent members of the air cleaner box according to the embodiment of the present invention.

FIG. 3 is an operation explanatory view of the air cleaner box of the embodiment of the present invention.

FIG. 4 is an explanatory view of a main structure of an air cleaner box according to an embodiment of the present invention.

FIG. 5 is a structural explanatory view showing a conventional air cleaner.

FIG. 6 is a partially cut perspective view showing a conventional air cleaner.

[Explanation of symbols]

11 ... Upper case 12 ... Lower case 13 ... Outside air introduction duct 14 ... Outside air intake port 15 ... Wire harness outlet 16 ... Exhaust port 17 ... Electrical component 18 ... Electrical component storage 19 ... Inner wall 20 ... Outer wall 21 ... Space 22 ... Filter 23 ... Partition plate 24 ... Ventilation path 25 ... Perimeter groove 26 ... Packing 27 ... Wire harness 28 ... Guide wall 29 ... Slack part 30 ... Air cleaner box 31 ... Impact absorption plate part 32 ... Slit

Claims (2)

[Claims] 1. An air cleaner box with a built-in electrical component, comprising: a filter and an electrical component exposed to a ventilation passage in an engine intake system to be cooled, wherein the air cleaner box (30) with a built-in electrical component comprises an upper case ( 11) and the lower case (12) are combined, and inside the lower case (12), at least three directions of the front and the left and right sides are surrounded by the double wall forming the space (21), In addition, an electric component storage portion (18) having a rear opening to the downstream air passage of the filter is formed, and the electric component storage portion (18) is formed at a part of the rear opening portion of the electric component storage portion (18). ) It is made to face the rear surface of the electrical component (17) housed in the inside, and its lower case (12).
Due to the impact force from the front, the electrical component storage section (18)
The pair of fragile grooves (2) on both left and right sides, which are broken by the displacement force generated in the inner wall (19) forming the groove and allow rearward movement of the electric component housed in the electric component housing portion (18)
An air cleaner box with a built-in electrical component, characterized in that a shock absorbing plate portion (31) having (5) is provided. 2. An electric component built-in air cleaner box comprising a filter and an electric component exposed to a ventilation passage in an engine intake system to be cooled, wherein the electric component built-in air cleaner box (30) comprises an upper case ( 11) and the lower case (12) are combined, and inside the lower case (12), at least three directions of the front and the left and right sides are surrounded by the double wall forming the space (21), In addition, an electric component storage portion (18) having a rear opening to the downstream air passage of the filter is formed, and the electric component storage portion (18) is formed at a part of the rear opening portion of the electric component storage portion (18). ) It is made to face the rear surface of the electrical component (17) housed in the inside, and its lower case (12).
Due to the impact force from the front, the electrical component storage section (18)
The pair of fragile grooves (2) on both left and right sides, which are broken by the displacement force generated in the inner wall (19) forming the groove and allow rearward movement of the electric component housed in the electric component housing portion (18)
5) is provided with a shock absorbing plate portion (31), and further, inside the upper case (11), a wire harness for connecting a wire harness connected to an electric component (17) to the outside of the air cleaner box. A wire outlet (15) is provided, and a guide wall (28) for forming a V-shaped slack portion (29) in the wire harness guided in the wire harness outlet is provided in the wire harness outlet. An air cleaner box with built-in electrical components.