JP2539312Y2 - Removable filter structure for vehicle air conditioner - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a filter disposed in a duct of an air conditioner, and relates to a detachable filter structure of a vehicle air conditioner which is inserted into the duct from a filter insertion opening of a duct opened to a vehicle compartment. .

[0002]

2. Description of the Related Art Conventionally, as a detachable filter structure of such a vehicle air conditioner, for example, a duct for guiding air taken in from an air inlet to an air outlet, and a blower inserted in the duct are provided. A fan and a temperature adjustment unit for adjusting the temperature of the air guided in the duct, and an air filter is provided in the duct, and the air filter is detachably attached to the duct. An opening formed so that the air filter can be inserted into the side wall portion of the duct, and an opening closing member that closes the opening when the air filter is inserted into the opening is provided. An air conditioner with a removable air filter is known (for example,
(Japanese Utility Model Application Laid-Open No. 63-13320).

[0003]

However, in the above prior art, a filter member having a rectangular air filter held by a frame body is inserted as it is into an opening formed in a side wall of a duct. Since the filter member is mounted on the duct, it is necessary to make the height dimension of the opening slightly larger than the height dimension of the filter member. It is practically difficult to expose the space below the glove box in the front of the vehicle compartment, which is the mounting space for the filter member, that is, a very narrow space near the feet of the passenger on the passenger seat. Therefore, there is a problem that it is difficult to insert the filter member into the opening of the duct in the same shape.

Further, in the above-mentioned prior art, since the filter member is inserted into the opening of the duct in the same shape, the filter member is mounted on the duct.
In the state where the filter member is mounted on the duct, there is a problem that play is likely to occur in the filter member due to a manufacturing error or the like, and the filter member may generate abnormal noise during traveling of the vehicle.

[0005] The present invention has been made in view of such conventional problems, and the filter mounting work can be easily performed even in a narrow work space, and generation of abnormal noise from the filter is prevented. It is an object of the present invention to provide a removable filter structure for a vehicle air conditioner.

[0006]

In order to achieve the above object, the present invention provides a filter disposed in a duct of an air conditioner, which is inserted into the duct from a filter insertion opening of the duct opened to the vehicle compartment. In a detachable filter structure of a vehicle air conditioner, a filter portion which is bent and stretched in a bellows shape, upper and lower frame portions fixed to upper and lower ends of the filter portion, and one end of each of the frame portions And an elastically deformable curved front and rear support portion for connecting the side and each other end, respectively, and in a state where the filter is inserted into the duct from the filter insertion port by the elastic force of the two support portions. The upper portion and the lower frame portion are configured so as to abut on the upper surface and the lower surface of the duct, respectively.

[0007]

In the above-mentioned filter structure, since the front and rear support portions can be elastically deformed to make the filter portion in a contracted state, even if the filter insertion opening of the duct has a small dimension in the height direction, the filter can be used as a filter. It can be easily inserted into the duct from the insertion opening. In addition, when the filter is inserted into the duct, the filter portion extends due to the elastic force of the front and rear support portions, and the upper and lower frame portions abut the upper and lower surfaces of the duct, respectively. Not stick.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to the drawings.

In the description of each embodiment, the same parts are denoted by the same reference numerals, and redundant description will be omitted.

FIG. 1 is a perspective view showing a removable filter structure of a vehicle air conditioner according to a first embodiment of the present invention.

The detachable filter 10 shown in FIG. 1 is provided in an evaporator case 21 constituting a duct of a cooling unit of a vehicle air conditioner 20 shown in FIG.
Are arranged as shown in FIG.

As shown in FIG. 3, the evaporator case 21 has a joint 21a with a blower unit (not shown).
Air inlet 21 into which air from this blower unit flows
b and a filter insertion port 21c are provided. As shown in FIG. 3, the filter 10 is disposed immediately after the air inlet 21b in the evaporator case 21 so as to cut off dust and the like in the air flowing from the air inlet 21b.

As shown in FIG. 2, the evaporator case 21 has a side wall 21 on which a filter insertion port 21c is formed.
g face toward the compartment of the automobile 22 and the filter insertion port 21c is located on the front left side of the compartment.
It is arranged so as to face the space below 2a, that is, the space 22b near the feet of the passenger in the passenger seat.

The filter 10 is, as shown in FIG.
An elastic filter portion 1 made of a nonwoven fabric folded in a bellows shape, and an upper frame portion 2 and a lower frame portion 3 fixed to an upper end and a lower end of the filter portion 1, respectively.
And elastically deformable front and rear support portions 4 and 5 for connecting the one end sides 2a and 3a and the other end sides 2b and 3b of the two frame portions 2 and 3 respectively. further,
The filter 10 is provided with a grip portion 6 that is gripped by an operator during the mounting operation and the removal operation, and a connecting portion 7 that connects the grip portion 6 and the upper frame portion 5. .

As shown in FIGS. 1 and 4, a pair of the support portions 4 and 5 are provided on both sides of the filter portion 1, respectively. The connecting portion 7 includes a vertical portion 7a extending vertically along the inner surface of the side wall 21d in a state where the filter 10 is mounted in an evaporator case (duct) 21; 21c and a horizontal portion 7b extending horizontally in the interior 21c. A seal member 11 is fixed inside the grip 6.

A set screw 12 is attached to the upper end of the grip 6 (see FIGS. 3 and 4).
After the filter 10 is mounted in the evaporator case 21, the set screw 12 is screwed into the screw hole 21 e of the side wall 21 d and tightened, so that the filter insertion port 21 c is closed by the seal member 11 and gripped. The part 6 is fastened to the side wall 21d.

The upper frame portion 2, the lower frame portion 3, the pair of support portions 4, the pair of support portions 5, the grip portion 6, and the connection portion 7 are integrally formed of, for example, an acrylic resin. In particular, each of the support portions 4 and 5 is curved so that it can be elastically deformed between the extended state shown in FIGS. 1 and 4 and the contracted state shown in FIG. 5C.

Further, as shown in FIG. 4, when the filter 10 is inserted into the evaporator case 21 from the filter insertion port 21c, the filter portion 1 is extended by the elastic force of the support portions 4, 5. The upper frame portion 2 and the lower frame portion 3 are configured to contact the upper surface 21f and the lower surface 21g of the evaporator case 21, respectively.

The filter 10 can be elastically deformed as shown in FIG. 5C so that the filter portion 1 is contracted, so that the height of the filter insertion opening 21 can be reduced. The dimension in the height direction may be as small as about half the dimension in the height direction of the side wall 21d.

Next, a procedure for mounting the detachable filter 10 according to the first embodiment having the above configuration in the evaporator case 21 and a procedure for removing the filter from the case 21 will be described.

In order to mount the removable filter 10 in the evaporator case 21, the filter 1 is gripped in a state where the filter 1 is extended by the elastic force of the support portions 4, 5 as shown in FIG. Hold the part 6, and both frame parts 2,
A force is applied to the gripping portion 6 so that one end 2a, 3a side of 3 enters the filter insertion port 21c of the evaporator case 21, and the supporting portion 4 side is largely elastically deformed (see FIG. 5B), and FIG. And one end 2a, 3a as shown in FIG.
When the side enters the filter insertion opening 21c, the grip portion 6
Then, the entire filter unit 1 is put into the evaporator case 21 by applying a leftward force in the same figure (see FIG. 6A), and the grip unit 6 is pushed obliquely upward from the state of FIG. 6A. The end face of the sealing member 11 is brought into contact with the end face of the filter insertion port 21c, and in this state, the set screw 12 is screwed into the screw hole 21 of the side wall 21d.
Then, the grip portion 6 is fastened to the side wall 21d by screwing it to e (see FIG. 6B). Thereby, the evaporator case (duct) 21 of the filter 10
The installation inside is completed.

In this completed mounting state, the filter unit 1
Is extended by the elastic force of the two support portions 4 and 5 so that the upper frame 2
And the lower frame 3 is an evaporator case 21
Abuts on the upper surface 21f and the lower surface 21g.

In order to remove the filter 10 from the evaporator case 21 after the detachable filter 10 has been used for a certain period of time, the set screw 12 is loosened and the grip portion 6 is gripped in the state shown in FIG. As shown in FIG. 7 (b), the grip portion 6 is pulled obliquely downward so that the other ends 2b and 3b of the two frame portions 2 and 3 are pulled out of the filter insertion port 21c.
In this state, as shown in FIG. 7C, the entire filter unit 1 is pulled out of the grip unit 6 rightward in FIG. Thus, the removal of the filter 10 from the evaporator case 21 is completed.

As described above, according to the first embodiment, the filter 10 is provided with the grip portion 6 which is gripped by the operator during the mounting operation and the removing operation, via the connection portion 7 through the upper frame portion 5. Can be elastically deformed in the front and rear support portions 4 and 5 during the filter attaching and detaching work to make the filter portion 1 in a contracted state, so that the filter is inserted into the evaporator case (duct) 21. Mouth 21
Even if C is small in height, filter 1
0 can be easily attached and detached. That is, the filter 10 can be easily attached and detached even in a very narrow work space such as the space 22b near the feet of the passenger on the passenger seat.

Further, with the filter 10 inserted into the evaporator case 21, the filter portion 1 is extended by the elastic force of the front and rear support portions 4, 5, and the upper frame portion 2 and the lower frame portion 3 are attached to the evaporator case 21. Upper surface 21 of
f and the lower surface 21g, respectively.
0 does not rattle in the evaporator case 21. Therefore, abnormal noise from the filter 10 does not occur during traveling of the vehicle.

FIG. 8 shows a removable filter structure according to a second embodiment of the present invention.

The filter 10 of the second embodiment uses wires 40 and 50 made of a spring material instead of the support portions 4 and 5 of the first embodiment. This is the same as in the first embodiment.

[0028]

[Effect of the Invention] As described in detail above, according to the present invention,
A filter arranged in a duct of an air conditioner, which is a bellows-shaped bendable and extendable filter in a removable filter structure of a vehicle air conditioner inserted into the duct from a filter insertion opening of the duct opened to the vehicle compartment. And upper and lower frame portions respectively fixed to the upper and lower ends of the filter portion, and elastically deformable curved front and rear support portions respectively connecting one end side and each other end side of both frame portions. In the state where the filter portion is inserted into the duct from the filter insertion port, the filter portion extends by the elastic force of the two support portions, and the upper and lower frame portions abut on the upper surface and the lower surface of the duct, respectively. With this configuration, the filter section can be contracted by elastically deforming the front and rear support sections, so that the height of the filter insertion port of the duct is small. Even in the casting, it can be easily inserted a filter from the filter insertion port into the duct. In addition, when the filter is inserted into the duct, the filter portion extends due to the elastic force of the front and rear support portions, and the upper and lower frame portions abut the upper and lower surfaces of the duct, respectively. Not stick. Therefore, the filter mounting operation can be easily performed even in a narrow working space, and the generation of abnormal noise from the filter can be prevented.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a removable filter structure of a vehicle air conditioner according to a first embodiment of the present invention.

FIG. 2 is an explanatory diagram showing a mounting position on a vehicle of an evaporator case to which the filter of FIG. 1 is mounted.

FIG. 3 is a perspective view showing an evaporator case to which the filter of FIG. 1 is attached.

FIG. 4 is a sectional view showing an evaporator case to which the filter of FIG. 1 is attached.

FIGS. 5 (a), (b) and (c) are explanatory views for explaining a filter mounting operation.

FIGS. 6A and 6B are explanatory diagrams for explaining a filter attaching operation.

FIGS. 7A, 7B, and 7C are explanatory diagrams for explaining a filter removing operation. FIG.

FIG. 8 is a perspective view showing a removable filter structure of a vehicle air conditioner according to a second embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Filter part 2 Upper frame part 3 Lower frame part 2a, 3a One end 2b, 3b Other end 4,5 Support part 10 Filter 20 Air conditioner 21 Evaporator case (duct) 21c Filter insertion opening 21f Upper surface 21g Lower surface 40, 50 Support part

Claims (1)

(57) [Scope of request for utility model registration] 1. A filter disposed in a duct of an air conditioner, wherein the filter is folded in a bellows shape in a removable filter structure of a vehicle air conditioner inserted into the duct from a filter insertion opening of the duct opened to the vehicle compartment. Resiliently deformable filter portion, upper and lower frame portions respectively fixed to the upper and lower ends of the filter portion, and one end and the other end of both frame portions, respectively, and an elastically deformable curve. The front and rear support portions are provided, and in a state inserted into the duct from the filter insertion port, the filter portion is extended by the elastic force of the two support portions, and the upper and lower frame portions are formed on the upper surface of the duct and A detachable filter structure for a vehicle air conditioner, wherein the filter structure is configured to be in contact with a lower surface.