KR20060039509A - A structure for fixing filter unit of car air-conditioner - Google Patents

Abstract

The present invention relates to a filter unit fixing structure for an automobile air conditioner, which prevents the fixing means for fixing the filter unit in the air conditioner from being deformed or damaged, thereby improving the productability of the product and maintaining the filter when the filter is maintained. The aim is to improve the

To this end, the present invention, the upper and lower fixing means bent from the upper and lower ends of the filter case member 12 of the filter unit (10) that is fixedly installed in the filter storage chamber 21 of the air conditioning case 20. In the filter unit fixing structure for a vehicle air conditioner provided with (F1, F2), the upper and lower fixing means (F1, F2) are formed horizontally at the upper and lower ends of the filter case member 12, respectively, The upper and lower hook parts having upper and lower hook portions 18a and 18b protruding in a direction facing each other to be locked to the locking grooves 22 formed on the upper and lower sides of the air conditioning case 20 are provided. Horizontal parts 14a and 14b, upper and lower elastic parts 15a and 15b formed by bending at predetermined intervals from the upper and lower horizontal parts 14a and 14b, and the upper and lower elastic parts 15a and 15b. The upper and lower handle portions 16a and 16b formed at the end portions of the upper and lower elastic portions 15a and 15b and the upper and lower horizontal portions 14a and 14b are connected to each other. And ribs (Rib, 17a, 17b).

Automotive, air conditioner, filter unit, filtration member, elastic part, hook part, rib, air conditioner case

Description

{A Structure for Fixing Filter Unit of Car Air-Conditioner}

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is an exploded perspective view showing a state in which a filter unit according to a conventional example is installed in a blower unit of a vehicle air conditioner;

Figure 2 is a block diagram of a handle portion provided in the filter unit in FIG.

3 is an exploded perspective view of a filter case member and a filtration member of a filter unit according to another conventional example.

4 is a cross-sectional view showing a state in which the filter unit shown in FIG. 3 is mounted in an air conditioning case of an automobile air conditioner.

5 is an exploded perspective view of the filter case member and the filtration member of the filter unit according to the present invention.

Figure 6 is a perspective view of the air conditioning case of the vehicle air conditioner for installing the filter unit shown in FIG.

Fig. 7A is a cross-sectional view showing a state in which the filter unit shown in Fig. 5 is mounted in an air conditioning case of an automobile air conditioner.

7B is a cross-sectional view showing a state in which the filter unit shown in FIG. 5 is removed from the air conditioning case of the vehicle air conditioner.                 

** Explanation of symbols for main parts of drawings **

10 ... Filter Unit 11 ... Filter Element

12 ... filter case members 14a, 14b ... horizontal

15a, 15b ... elastic part 16a, 16b ... handle

17a, 17b ... Rib 18a, 18b ... Hook

20 ... air-conditioning case 21 ... filter storage room

22 ... hanging groove 23 ... guide wall

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure of a filter unit for an automobile air conditioner, and more particularly, to prevent the fixing means for fixing the filter unit in the air conditioner from being deformed or damaged by frequent external force, thereby making it possible to obtain product characteristics. In addition, the present invention relates to a filter unit structure for an automobile air conditioner that improves and improves maintainability in filter maintenance.

In general, the automotive air conditioner selectively heats an external air introduced into a vehicle by a blower unit having a blower fan through an evaporator through which a refrigerant flows or a heater through which a coolant of a vehicle engine flows and heat-exchanges. A device for cooling and heating a vehicle interior by distributing it in various directions of the vehicle interior in a cold or warm state through a duct communicating with the discharge port.                         

Such an air conditioning apparatus is equipped with a filter unit provided with a filtration member in order to adsorb and remove dust, harmful components, odor components, etc. contained in the air introduced into the air conditioning case by the blower fan to provide comfortable air to the occupants. . The filter unit is mainly installed between the vehicle cowl and the blower unit, between the internal and external air switching doors of the blower unit and the blowing fan, or between the blower unit and the evaporator unit. The filter member provided in the filter unit accumulates impurities on its surface after a certain period of use, thereby deteriorating the air-conditioning function while lowering the air permeability, and thus should be regularly replaced with a new filter member.

Accordingly, most filter units are detachably installed in the air conditioning apparatus so as to easily replace the filtration members.

As an example, Japanese Patent Laid-Open No. Hei 11-170840 discloses a filter unit that is elastically detachably mounted to a blower unit of a vehicle air conditioner as shown in FIG.

As shown in FIG. 1, the blower unit 100 includes an internal air inlet 101 and an external air inlet 102 connected to the flow passages of the internal air and the external air of the vehicle, and the internal air inlet 101 and the internal air inlet 101. An air intake case 110 having internal and external air conversion doors (not shown) for selectively opening and closing the internal air inlet 101 and the external air inlet 102 while rotating between the external air inlets 102; A scroll case (120) installed below the air intake case (110) and having a blowing fan (not shown) therein; The electric motor 121 is installed to penetrate the bottom of the scroll case 120 to drive the blowing fan. In the blower unit having such a structure, the air filtration filter unit 140 is installed in the opening 130 formed between the internal and external air conversion doors and the blowing fan.

The filter unit 140 includes a filtration member 141 for removing foreign substances such as pollen, and a case member 142 supporting the filtration member 141 to surround it.

On both sides of the case member 142, a handle portion 143 is integrally formed to pull out the filter unit 140 from the opening 130 of the blower unit, and the handle portion 143 is shown in FIG. As shown in FIG. 2, a pair of handles 143a and a pair of fitting protrusions 143b extending to the handle 143a and fitted to the fitting accommodation portion 131 formed at both sides of the air intake case 110 are provided. ) Here, the fitting protrusion 143b and the handle 143a are integrally formed, and the connecting portion 143c is integrally connected therebetween.

In addition, the fitting protrusion 143b is configured to elastically move around the connection points P1 and P2 at the connection portion 143c by applying an external force to the handle 143a.

Conventionally, when the filter unit 140 having such a structure is mounted in the opening 130 of the blower unit, the filter unit 140 is inserted into the opening 130 of the blower unit, and then a pair of handles 143a are provided. After the external force was applied to the fitting protrusions 143b to be separated from each other, by removing the external force applied to the handle 143a, the fitting protrusions 143b were fixed to the fitting accommodation part 103 while being returned to its original state.                         

In this state, when the filter unit 140 is removed from the opening 130 of the blower unit for replacing the filtration member 141, the fitting protrusion 143b is opened by applying an external force to the pair of handles 143a. After the filter unit 120 was removed, the filter unit 120 was removed from the opening 130.

However, when an external force is applied to the handle 143a in the process of mounting and removing the conventional filter unit as described above, the fitting protrusion 143b moves elastically based on the connection part 143c, and in this process, the connection part 143c. ) And the connection points (P1, P2) between the fitting protrusion (143b) is often broken, there is a defect that does not perform any elastic function. Thus, a problem arises in that the replacement cost such as the case member 122 should be replaced together when the filtration member 121 is replaced.

Further, in order to form the handle portion 143 for fixing to the fitting receiving portion 131, the length of both side ends of the case member 142 of the filter unit 140 is larger than the width of the blower unit 100. Since it should be formed slightly longer, there was a problem of causing unnecessary occupied space as much as the length of the formation.

In order to solve this problem, the present applicant has disclosed in the domestic utility model registration No. 333188, a filter unit fixing structure that can prevent the damage of the fixing means when mounting and removing the filter unit.

That is, the filter unit fixing structure, as shown in Figure 3 and 4, the filter unit consisting of a filter member 221 for filtering air, and a filter case member 222 on which the filtration member 221 is seated. In (200), upper and lower extension ribs (223a, 223b) are formed on the upper and lower sides of the front part of the filter case member 222, respectively, and zigzag at the end portions of the upper and lower extension ribs (223a, 223b). The upper and lower elastic parts 226a and 226b that are bent into a shape are formed, and the upper and lower handle parts 227a and 227b are formed at the end portions of the upper and lower elastic parts 226a and 226b, respectively. have.

In addition, upper and lower hook portions 228a and 228b are formed on outer surfaces of the end portions of the upper and lower elastic portions 226a and 226b so as to be locked to the inner surface of the air conditioning case 300.

In the filter unit 200 having such a fixed structure, when the operator grips the upper and lower handle portions 227a and 227b and applies an external force to approach each other, the upper and lower elastic portions 226a and 226b flow elastically. While the upper and lower hook portions 228a and 228b are coupled to and released from the filter storage chamber 210 formed in the air conditioning case 300 to be mounted or removed. Therefore, when the filter unit 200 is mounted or removed, the fracture stress generated by bending the bending parts 224a and 224b of the upper and lower elastic parts 226a and 226b elastically be immediately adjacent to the bending part. Since it serves to disperse the one horizontal portion (223a, 223b), the upper and lower elastic portion (226a, 226b) when mounting or removing the filter unit 200 to the filter storage chamber 310 formed in the air conditioning case 300 Will not be broken.

However, the filter unit fixing structure, as shown in FIG. 4, has a constant gap between the upper and lower elastic parts 226a and 226b and the horizontal parts 223a and 223b that are elastically flown. Due to this, when frequent external force is applied to the upper and lower elastic parts 226a and 226b made of a soft material, the upper and lower elastic parts 226a and 226b sag toward the horizontal parts 223a and 223b. By deforming, the elastic restoring force restored to its original state becomes weak.

Accordingly, when the filter unit 200 is mounted in the filter storage chamber 310 formed in the air conditioning case 300, the hook portions 228a and 228b are not locked to the inner surface of the filter storage chamber 310 at one time. As a result, the filter maintenance is deteriorated overall, such as the installation time is considerably delayed. In addition, when the filter unit 200 is mounted or removed due to the excessive work of the operator, the elastic action parts, that is, the elastic parts 226a and 226b or the hook parts 228a and 228b may be damaged. In this case, As in the conventional example, the filter case member 222 also had to be replaced together when the filtration member 221 was replaced.

In addition, in order to lock the hook portions 228a and 228b to the inner surface of the air conditioning case 300, grooves corresponding to the hook portions 228a and 228b should be formed on the inner surface of the air conditioning case 300. When the side wall of the air conditioning case 300 itself is thin, it was difficult to mold injection of the air conditioning case having such a groove.

Accordingly, the present invention is made in order to solve the above-mentioned problems, and the fixing means for fixing the filter unit in the air conditioning case is prevented from being deformed or damaged by frequent external force to improve the productability of the product, It is an object of the present invention to provide a filter unit fixing structure for an automobile air conditioner that can improve its maintainability during filter maintenance.

In order to achieve the above object, the present invention is a filter unit fixing structure for a vehicle air conditioner having upper and lower fixing means bent from the upper and lower ends of the filter case member of the filter unit which is fixedly installed in the filter storage chamber of the air conditioning case. To

The upper and lower fixing means, each of which is formed horizontally on the upper and lower end portions of the filter case member, the upper having a hook portion protruding in a direction facing each other so as to be locked to the locking groove formed on the upper and lower sides of the air conditioning case Lower horizontal section,

Upper and lower elastic parts bent at a predetermined distance from the upper and lower horizontal parts,

Upper and lower handle portions formed at ends of the upper and lower elastic portions,

It characterized in that it comprises a rib formed between the upper and lower elastic portion and the upper, lower horizontal portion.

In the present invention, a guide wall for guiding the engaging position of the upper and lower hook portions and the locking groove is formed in a portion where the locking groove is formed.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

5 is an exploded perspective view of the filter case member and the filtration member of the filter unit according to the present invention, Figure 6 is a perspective view of the air conditioner for installing the filter unit shown in Figure 5, Figure 7 is a filter unit shown in Figure 5 Is a cross-sectional view showing the state in which the air conditioner is mounted and removed.

5 to 7, the filter unit 10 for a vehicle air conditioner according to the present invention includes a filtration member 11 folded in a zigzag manner and the filtration member so that the filtration member 11 is seated. It consists of the filter case member 12 which supports the periphery of 11.

Further, the front of the filter case member 12, as in the prior art, the upper and lower extension ribs (13a, 13b) on the upper and lower sides so as to serve as a filter cover for sealing the filter storage chamber 21 of the air conditioning case 20. Are respectively formed, and the upper and lower fixing means F1 and F2 elastically flowing are bent in a zigzag shape at the end portions of the upper and lower extension ribs 13a and 13b.

The upper and lower fixing means (F1, F2) is the upper and lower horizontal portion 14a which is formed to extend horizontally in the insertion direction of the filter storage chamber 21 from each end of the upper and lower extension ribs (13a, 13b). , 14b), upper and lower elastic parts 15a and 15b formed at predetermined intervals from the upper and lower horizontal parts 14a and 14b, and end portions of the upper and lower elastic parts 15a and 15b. Upper and lower handle portions 16a and 16b formed. The upper and lower handle portions 16a and 16b may be attached to or removed from the filter storage chamber 21 of the air conditioning case 20 so that an operator can easily grip and apply an external force. It is bent at the ends of the upper and lower elastic parts 15a and 15b.

In the above-described prior art with reference to Figs. 3 and 4, in the structure as described above, when there is a gap between the elastic portion and the horizontal portion, when mounting or removing the filter unit in the filter storage chamber of the air conditioning case When an external force is applied to the handle portion formed at the end of the elastic portion, a bending deformation occurs so that a part of the surface of the elastic portion contacts the end portion of the horizontal portion (more specifically, the connection portion of the extension rib and the horizontal portion). Such bending deformation causes the elastic part to sag toward the horizontal part due to frequent external force, thereby greatly reducing the elastic restoring force to be restored to its original state, and in some cases, causing the elastic part to be damaged.

Therefore, in the present invention, the elastic parts 15a and 15b and the horizontal parts 14a and 14b are provided so as to fundamentally prevent the bending deformation as described above so that the elastic action effects of the elastic parts 15a and 15b can be continuously exerted. Reinforcing ribs (Rib, 17a, 17b) for preventing bending deformation are vertically connected between each other.

Since the reinforcing ribs 17a and 17b serve as posts while maintaining a constant distance between the elastic parts 15a and 15b and the horizontal parts 14a and 14b, the elastic parts 15a and 15b are conventionally used. Does not sag toward the horizontal portions 14a and 14b. Therefore, when the operator attaches or removes the filter unit 10 to the filter storage chamber 21 of the air conditioning case 20, even if only a slight external force is applied to the pair of handle portions 16a and 16b, sufficient elasticity can be exerted. To help.

On the other hand, when the filter unit 10 having such a structure is mounted in the filter storage chamber 21 of the air conditioning case 20, the air conditioning case without flowing the filter unit 10 from the filter storage chamber 21 The upper and lower hook portions 18a and 18b are formed on the upper and lower horizontal portions 14a and 14b so as to be fixed to the 20, and the cross sections protrude in a substantially triangular shape in a direction facing each other.

Correspondingly, on the outer surface of the air conditioning case 20, that is, on the front upper and lower sides of the air conditioning case in which the filter storage chamber 21 is formed, the same positions as those of the upper and lower hook portions 18a and 18b are formed. Locking grooves 22 are formed at positions, respectively. Further, when the filter unit 10 is mounted in the filter storage chamber 21 at the portion where the locking groove 22 is formed, the upper and lower hook portions 18a and 18b are enlarged in a circle in FIG. 6. As described above, guide walls 23 for guiding the engaging positions thereof are formed to protrude in the upward and downward directions so as to be easily coupled to the locking grooves 22.

As a result, the upper and lower hook portions 18a and 18b are easily and firmly coupled to the locking groove 22 by the guide wall 23.

In the present invention, the filter unit 10 having such a structure, as shown in Fig. 6 is an example of installing between the internal and external air conversion door and the blowing fan of the blower unit of the air conditioning case 20, the installation position is As described above, it may be applied between the vehicle cowl and the blower unit or between the blower unit and the evaporator.

Referring to the working relationship of the present invention configured as described above are as follows.

First, when the filter unit 10 is to be mounted in the filter storage chamber 21, the filter unit 10 is inserted into the filter storage chamber 21 to some extent, and then the upper and lower handles 16a and 16b are removed. Holding and applying a predetermined external force to approach each other.

In this state, when the filter unit 10 is completely inserted into the filter storage chamber 21 and then the upper and lower handles 16a and 16b are released, the upper and lower handles 16a and 16b are the upper and lower elastic parts ( 15a, 15b) is separated from each other by returning to the original position is locked in the locking groove 22 formed on the front and top of the air conditioning case 20 is firmly fixed (see Fig. 7a).

On the other hand, in the case of removing the filter unit 10 mounted in the filter housing 21 in this way, as described above, by holding the upper and lower handles 16a and 16b, the filter is applied in a state where external force is applied to approach each other. The unit 10 may be taken out from the filter storage chamber 21 (see FIG. 7B).

As described above, when the filter unit 10 is mounted or removed, the upper and lower elastic parts 15a and 15b are upper and lower unless the operator grips the upper and lower handles 16a and 16b to apply an external force. By the reinforcing ribs 17a and 17b formed between the lower horizontal portions 14a and 14b, the bending deformation does not occur as in the prior art, whereby the elastic return force of the elastic portions 15a and 15b is reduced. You won't be vulnerable.

As a result, the upper and lower elastic parts 15a and 15b are not deformed or damaged even if the external force applied to the handles 16a and 16b becomes frequent, so that the filter case member (for The filter case member 12 can be used for a long time without the need to replace 12), and the filter maintenance work can be easily performed during filter maintenance.

As described above, according to the present invention, by forming a reinforcing rib between the elastic portion and the horizontal portion constituting the fixing means for elastically fixing the filter unit, by forming a hook portion fixed to the outer surface of the air conditioning case Since the elastic part does not sag toward the horizontal part even by frequent external force, it is possible to prevent the elastic part or the hook part from being deformed or damaged, thereby improving the product value of the filter case member, and during filter maintenance. Not only can the maintenance thereof be improved, but also the mold injection structure of the air conditioning case can be made simpler.

Claims (2)

It is provided with upper and lower fixing means (F1, F2) bent from the upper and lower ends of the filter case member 12 of the filter unit (10) fixedly installed in the filter storage chamber (21) of the air conditioning case (20). In the filter unit fixing structure for the automotive air conditioning apparatus, The upper and lower fixing means F1 and F2 are horizontally formed at the upper and lower end portions of the filter case member 12, respectively, and locked in the locking grooves 22 formed at the upper and lower sides of the air conditioning case 20. Upper and lower horizontal portions 14a and 14b having upper and lower hook portions 18a and 18b protruding in a direction opposite to each other so as to be locked. Upper and lower elastic parts 15a and 15b formed by bending at predetermined intervals from the upper and lower horizontal parts 14a and 14b, Upper and lower handle portions 16a and 16b formed at end portions of the upper and lower elastic portions 15a and 15b, And a rib (Rib, 17a, 17b) formed between the upper and lower elastic parts (15a, 15b) and the upper and lower horizontal parts (14a, 14b). The method of claim 1, The vehicle, characterized in that the guide wall 23 for guiding the engaging position of the upper and lower hook portions (18a, 18b) and the locking groove 22 is formed in a portion where the locking groove 22 is formed. Filter unit structure for air conditioner.

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