JPH09150628A - Air filter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent rattling in up-and-down directions by a simple structure. SOLUTION: A pair of filter guides 62 whose height becomes gradually large from both sides to a center are formed on the upper surface of an air filter 6. Since the center of the filter guide 62 formed on the upper surface of the air filter 6 is higher than the air filter 6 when it is mounted, the center of the air filter 6 is deflected toward the inside of the air filter 6. Since restoring force of the air filter 6 itself to the deflection is applied in up-and-down directions, the holding force of the air filter 6 is increased.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air filter which is arranged in a vehicle air conditioner by stacking at least two layers.

[0002]

2. Description of the Related Art As a conventional air purifying device, an actual flatbed 6
-78026 has a thing disclosed. This air purification device (in the case of this reference, a filter) is arranged in the vicinity of the upstream side of the evaporator so as to be vertically stacked with respect to the air passage. In order to fix the two filters arranged above and below. It uses a lever.

When an air purifying device (filter or electric air purifying device) is attached to the evaporator unit,
Due to layout restrictions during assembly work, such as the presence of a steering member (a member that penetrates the inside of the instrument panel perpendicularly to the direction of travel of the vehicle and that supports a steering device such as a steering wheel), it is divided into two parts. As a general rule, the evaporator unit is generally inserted from the lateral direction (Japanese Patent Application No. 9-9 filed by the present applicant).
No. 7792).

[0004]

However, the one disclosed in Japanese Utility Model Laid-Open No. 6-78026 described above has a good filter fixing property, but the structure of the lever for holding the filter is complicated, and the assembling work is therefore difficult. However, there is a problem that work is difficult due to layout restrictions.

Further, in the case of the filter disclosed in Japanese Patent Application No. 9-97792, it is intended to form a concavo-convex portion in the joint portion of the two parts to improve the mountability of the divided parts. Since the uneven portion is a portion that does not collect dust, it is desirable to make it as thin as possible, and it is usually set to about 3 mm. However, this thickness causes a problem of rattling due to vibration or the like when mounted on a vehicle.

Therefore, it is an object of the present invention to provide an air filter having a simple structure and capable of preventing rattling in the vertical direction.

[0007]

SUMMARY OF THE INVENTION Therefore, the present invention provides an air filter which is inserted along a mounting guide from a mounting hole opened in an air conditioning duct and which is arranged perpendicular to an air flow path of the air conditioning duct. On the upper surface of the air filter, parallel to the insertion direction of the air filter,
A pair of filter guides whose height gradually increases from both ends toward the central portion are formed, and the height of the central portion of the air filter is higher than the height of the air filter when mounted (claim 1). .

As a result, when the air filter is attached,
Since the central portion of the filter guide formed on the upper surface of the air filter is formed to be wider than the width between the air filters when mounted, the central portion of the air filter should be bent inward of the air filter. Becomes Since the restoring force of the air filter itself against this bending is applied in the vertical direction, the holding force of the air filter increases, and the above-mentioned problem can be achieved.

According to the present invention, the air filter is
At least two upper and lower layers are stacked vertically to the air flow path (claim 2). by this,
According to this invention, under the air filter arranged above,
When another air filter is attached, the central portion of the filter guide formed on the upper surface of the air filter is formed to be wider than the width between the air filters when it is attached. It will bend inward. Since the restoring force of the air filter itself against this bending is applied in the vertical direction, the holding force of the air filter increases, and the above-mentioned problem can be achieved.

Further, the present invention is to form the filter guide by a plurality of blocks (claim 3). As a result, the deformation of the filter guide can be absorbed by the gaps between the blocks, so that the air filter is easily bent.

Further, according to the present invention, guide ridges to be inserted between the pair of filter guides are formed on the lower surface of the air filter, and at least two guide ridges are provided.
It is divided into two parts (Claim 4). Accordingly, when the air filter arranged above is urged upward by the filter guide of the air filter arranged below, the lower side of the air filter arranged above can be easily bent.

[0012]

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

FIG. 1 shows a cooling unit 1 for a vehicle air conditioner, which constitutes an air conditioning duct 2 together with a blower unit and a heater unit (not shown). Air flowing along the direction shown by the arrow in the figure. The flow path 3 is formed. At the center of the cooling unit 1, an evaporator 4 as a heat exchanger for cooling which is erected perpendicularly to the air passage 3 is mounted, and an air purifying device 5 is arranged on the upstream side of the evaporator 4. It is something. In the present embodiment, the air purifying device 5 is composed of a pair of air filters 6 and 6 which are inserted from a mounting hole 9 opened at a side portion of a case 8 of a cooling unit 1 constituting an air conditioning duct 2. The following is an explanation of the pair of air filters 6 and 6. Reference numeral 7 is a mounting guide for the air filter 6 formed on the case 8.

The air filter 6 has a rectangular frame body 61, a filter guide 62 formed on the upper surface of the frame body 61, and a ridge 63 formed on the lower surface of the frame body 61.
And the air filter 6 formed on one side of the frame 61.
And a frame body 6 for closing the mounting hole 9 when mounting
It is constituted by the air purifying unit 65 arranged in the inside 1. Further, the lid 64 has a meshing claw 66 used at the time of mounting work.
Is formed on the upper end side thereof, and a fixing projection 67 for fixing the air filter is formed on the lower end side thereof. A seal member 68 made of urethane or the like is mounted inside the lid 64 of the air filter 6.

The air purifying section 65 is generally made of an air purifying member such as non-woven fabric, activated carbon or net, but may be equipped with an electric air purifying device such as an electrostatic precipitator. Is. In this case, it is necessary to form an electric terminal on the lid 64.

The filter guide 62 is shown in FIG.
As shown by (b) and (c), a block 62a having a height corresponding to a gap between the upper and lower air filters 6 and 6 when the air filter 6 is mounted and a frame body located at the rear end in the mounting direction. Blocks 62b having upper surfaces that gradually incline from the end of 61 to the same height as the block 62a are provided at both ends, and from the blocks 62a, 62b at both ends,
The block is formed so that the central block 62c located at the center and higher than the gap between the air filters 6 and 6 gradually increases in height toward the central block 62c.

A pair of the guide blocks 62 are formed in parallel with the inserting direction of the air filter 6, but in this embodiment, as shown in FIG. 6 (a),
Each block was arranged alternately. by this,
It is possible to easily perform die cutting when the frame body 61 of the filter is formed.

The ridge 63 formed on the lower surface of the air filter 6 is inserted between the pair of filter guides 62, and is divided in order to make the lower portion of the frame 61 of the air filter 6 bend easily. To be formed.

As a result, the filter guide 62 of the air filter 6 is divided into small blocks, and the ridge 63 formed on the lower surface of the air filter 6 is divided, so that the air filter 6 can be easily bent. be able to.

As shown in FIG. 3, in the air filter 6 having the above-described structure, first, the engagement claw 66 is inserted into the mounting guide 7, and the air filter 6 is rotated with this as a fulcrum to rotate one air filter 6 into one. It is placed at a predetermined position above it. While pressing this air filter 6 with your finger to maintain it in place,
Below this air filter 6, another air filter 6
Is slid along the mounting guide 11 formed on the case 8 and mounted. At this time, as shown in FIG. 4, the filter guide 62 of the lower air filter 6 urges the upper air filter 6 upward, and the reaction thereof also urges the upper air filter 6 from the upper and lower sides. The air filters 6 and 6 are slightly bent. The air filters 6 and 6 are sufficiently held by the restoring force against this bending.

Thereafter, as shown in FIG. 5, the clip 10 sandwiches the fixing protrusion 67 of the air filter 6 arranged below and the fixing protrusion 81 formed on the case 8 to thereby fix the air filter. It is possible to securely fix 6,6.

In the above embodiment, the air purifying device 5 is constructed by laminating a pair of air filters 6 and 6. However, in the case where it can be constructed by one air filter, the air purifying device can be used from both ends. The air purifying device 5 may be configured by mounting an air filter having a filter guide formed on the upper surface and gradually increasing toward the center. In some cases, the air purification device 5 may be composed of three or more air filters.

[0023]

As described above, according to the present invention, the filter guide formed on the upper surface of the air filter is formed so as to gradually become higher from both sides toward the central portion, and the air filter is mounted when the air filter is mounted. Since the air filter can be held by its restoring force by bending the
The rattling of the filter can be prevented, and the generation of abnormal noise can be prevented.

[Brief description of the drawings]

FIG. 1 is a side view showing a cooling unit to which an air filter according to the present invention is attached.

FIG. 2A is a plan view of an air filter, and FIG.
Is a front view thereof, and (c) is a side view thereof.

FIG. 3 is an explanatory diagram for explaining mounting of an air filter.

FIG. 4 is an explanatory view showing a state when an air filter is attached.

FIG. 5 is a partial perspective view of the outside of the case when the air filter is attached.

[Explanation of symbols]

 1 Cooling Unit 2 Air Conditioning Duct 3 Air Flow Path 4 Cooling Heat Exchanger (Evaporator) 5 Air Purifier 6 Air Filter 7 Mounting Guide 8 Case 9 Mounting Hole 10 Clip 61 Frame 62 Filter Guide 63 Convex Strip 64 Lid 65 Air Purification unit 66 Engaging claw 67 Fixed protrusion 68 Sealing member

Claims (4)

[Claims] 1. An air filter, which is inserted along a mounting guide from a mounting hole opened in an air conditioning duct and is arranged perpendicularly to an air flow path of the air conditioning duct, wherein the air filter is provided on an upper surface of the air filter. A pair of filter guides which are parallel to the insertion direction of the air filter and whose height gradually increases from both ends toward the central portion, and the height of the central portion of the air filter is higher than the height of the air filter when mounted. An air filter characterized by high price. 2. The air filter according to claim 1, wherein at least two upper and lower air filters are stacked. 3. The air filter according to claim 1, wherein the filter guide is formed by a plurality of blocks. 4. The guide ridge that is inserted between the pair of filter guides is formed on the lower surface of the air filter, and the guide ridge is divided into at least two parts. Alternatively, the air filter according to item 3.