KR102586951B1 - Lower case - Google Patents

Abstract

The embodiment includes a case body with a drain port formed thereon; a plurality of protrusions protruding from the lower surface of the case body; and a heat insulating member disposed on the inner bottom of the case body, wherein the heat insulating member is fixed to the bottom of the case body when heat is applied to the protrusion. At this time, the lower case attaches an insulating member using a heat fusion method, thereby reducing parts and assembly man-hours and improving productivity.

Description

Lower case {LOWER CASE}

The example relates to the lower case. In detail, it relates to a lower case disposed in a vehicle air conditioning system to discharge condensate generated when the refrigerant in the evaporator changes phase.

Cars are equipped with an air conditioning system to control the indoor air temperature. The air conditioning system generates warmth in the winter to keep the vehicle's interior warm, and generates cold air to keep the vehicle's interior cool in the summer.

1 is a diagram showing an air conditioning system for a vehicle.

Referring to FIG. 1, the vehicle air conditioning system may include an air conditioning case 10, a blower 20, and an evaporator 30 disposed inside the air conditioning case 10. Additionally, the vehicle air conditioning system may include a drainage device 40 configured to discharge moisture.

The air conditioning case 10 is composed of an upper case 12 and a lower case 14, and a blower 20 may be installed in the air conditioning case 10.

The blower 20 includes a blower fan 22 and a blower motor 24 that drives the blower fan 22, sucks in outside air or internal air, and then blows the sucked inside and outside air into the air conditioning case 10. It blows into the passage (16).

The evaporator 30 may be installed in the cooling chamber 17 formed on the internal passage 16 of the air conditioning case 10.

The evaporator 30 has a plurality of tubes (not shown) through which refrigerant flows, and cools the air blown into the cooling chamber 17. Accordingly, the evaporator 30 allows cooled air to be introduced into the interior of the vehicle.

The drain device 40 can discharge condensed water generated on the surface of the evaporator 30.

As shown in FIG. 1, the drainage device 40 includes a hopper-type bottom surface 17a of the cooling chamber 17 that receives condensed water falling from the surface of the evaporator 30, and a bottom surface 17a. ) includes a drain passage 42 that collects the condensate that has fallen by guiding it in the direction of gravity, and a drain 44 that discharges the collected condensate.

In particular, the drain passage 42 is formed inclined along the hopper-type bottom surface 17a, and guides condensed water that falls on the bottom surface 17a to the drain hole 44 on the lower side. And the drain hole 44 discharges condensed water transported along the drain passage 42 to the outside of the air conditioning case 10.

Meanwhile, an insulator may be placed below the evaporator 30. The insulator can shield the space between the bottom surface 17a of the lower case 14 and the evaporator 30.

At this time, by attaching the insulator to the lower case 14 using double-sided adhesive tape, movement of the insulator can be prevented.

However, when using the adhesive tape, the assembly time increases due to a separate process in which the worker attaches the adhesive tape, and the cost increases due to the increase in the number of parts due to the use of the adhesive tape.

The embodiment provides a lower case that can improve productivity by reducing parts and assembly man-hours by attaching an insulation member using a heat fusion method.

Additionally, a lower case including protrusions is provided to prevent damage or thermal deformation caused by heat fusion.

The problem to be solved by the present invention is not limited to the problems mentioned above, and other problems not mentioned here will be clearly understood by those skilled in the art from the description below.

The above problem is to provide a lower case of a vehicle air conditioning system according to an embodiment, including a case body having a drain port formed thereon; and a heat insulating member disposed on the inner bottom of the case body, wherein the heat insulating member is achieved by a lower case fixed to the bottom of the case body by heat fusion.

Here, the lower case further includes a plurality of protrusions protruding from the lower surface of the case body, and the protrusions may be arranged to overlap the insulation member with the case body interposed therebetween.

Accordingly, when heat is applied to the protrusion, the heat may be transferred to the case body through the protrusion to attach the heat insulating member to the case body.

At this time, a boss may be further formed at the end of the protrusion formed in a cylindrical shape.

Additionally, the protrusion may increase in width toward the case body. Here, a concave groove may be formed at the end of the protrusion.

Additionally, the protrusion height (H) of the protrusion may be greater than the thickness (T) of the case body.

Additionally, an evaporator is disposed on top of the insulation member, and one side of the evaporator may be in close contact with the insulation member due to the evaporator's own weight.

The lower case according to the embodiment can improve productivity by attaching an insulation member using a heat fusion method, thereby reducing parts and assembly man-hours. That is, the lower case is provided with an insulation member attached through a heat fusion method, thereby simplifying the manufacturing process of the vehicle air conditioning system. Additionally, since the insulating member can be attached without using double-sided adhesive tape, the number of parts can be reduced.

Additionally, by forming a protrusion that partially increases the thickness of the lower case, damage or thermal deformation due to heat fusion can be prevented.

The various and beneficial advantages and effects of the embodiments are not limited to the above-described content, and may be more easily understood through description of specific embodiments of the embodiments.

1 is a diagram showing a vehicle air conditioning system,
Figure 2 is a perspective view showing a lower case according to an embodiment;
Figure 3 is an exploded perspective view showing a lower case according to an embodiment;
4 is a cross-sectional view showing a lower case according to an embodiment,
Figure 5 is a view showing another example of the protrusion of the lower case according to the embodiment;
Figure 6 is a view showing another example of the protrusion of the lower case according to the embodiment;
Figure 7 is a diagram showing an evaporator disposed in the lower case according to an embodiment.

Since the present invention can be subject to various changes and can have various embodiments, specific embodiments will be illustrated and described in the drawings. However, this is not intended to limit the present invention to specific embodiments, and should be understood to include all changes, equivalents, and substitutes included in the spirit and technical scope of the present invention.

Terms containing ordinal numbers, such as second, first, etc., may be used to describe various components, but the components are not limited by the terms. The above terms are used only for the purpose of distinguishing one component from another. For example, the second component may be referred to as the first component without departing from the scope of the present invention, and similarly, the first component may also be referred to as the second component. The term and/or includes any of a plurality of related stated items or a combination of a plurality of related stated items.

When a component is said to be "connected" or "connected" to another component, it is understood that it may be directly connected to or connected to the other component, but that other components may exist in between. It should be. On the other hand, when it is mentioned that a component is “directly connected” or “directly connected” to another component, it should be understood that there are no other components in between.

In the description of the embodiment, in the case where one component is described as being formed “on or under” another component, (on or under) includes both components that are in direct contact with each other or one or more other components that are formed (indirectly) between the two components. Additionally, when expressed as 'on or under', it can include not only the upward direction but also the downward direction based on one component.

The terms used in this application are only used to describe specific embodiments and are not intended to limit the invention. Singular expressions include plural expressions unless the context clearly dictates otherwise. In this application, terms such as “comprise” or “have” are intended to designate the presence of features, numbers, steps, operations, components, parts, or combinations thereof described in the specification, but are not intended to indicate the presence of one or more other features. It should be understood that this does not exclude in advance the possibility of the existence or addition of elements, numbers, steps, operations, components, parts, or combinations thereof.

Unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by a person of ordinary skill in the technical field to which the present invention pertains. Terms defined in commonly used dictionaries should be interpreted as having a meaning consistent with the meaning in the context of the related technology, and unless clearly defined in the present application, should not be interpreted in an ideal or excessively formal sense. No.

Hereinafter, embodiments will be described in detail with reference to the attached drawings, but identical or corresponding components will be assigned the same reference numbers regardless of reference numerals, and duplicate descriptions thereof will be omitted.

The lower case according to an embodiment of the present invention can be used as a lower case of a vehicle air conditioning system.

FIG. 2 is a perspective view showing a lower case according to an embodiment, FIG. 3 is an exploded perspective view showing a lower case according to an embodiment, and FIG. 4 is a cross-sectional view showing a lower case according to an embodiment. Here, FIG. 4 is a cross-sectional view taken along line A-A of FIG. 2.

2 to 4, the lower case 1 according to the embodiment includes a case body 100, a plurality of protrusions 200 protruding from the lower surface 110 of the case body 100, and a case body 100. ) may include an insulation member 300 disposed on the inner bottom surface 120.

Additionally, the insulation member 300 may be fixed to the bottom surface 120 of the case body 100 by heat fusion. For example, by applying heat to the case body 100 or the insulation member 300, the insulation member 300 can be attached to the inner bottom surface 120 of the case body 100. However, when the heat is applied to the case body 100 through the heat fusion method, damage or thermal deformation of the case body 100 may occur due to the heat, so the lower case 1 has a protrusion 200. Damage to the case body 100 can be prevented or minimized using . Here, since the insulation member 300 can serve as an insulation or shielding means for shielding between the case body 100 and the evaporator 30, it may be called an insulation or shielding means.

Meanwhile, a drain port 130 through which condensed water can be discharged may be formed in the case body 100. At this time, the case body 100, drain port 130, and protrusion 200 may be formed of a synthetic resin material and may be formed as one piece. For example, the case body 100, drain port 130, and protrusion 200 may be formed integrally through injection molding.

The case body 100 forms the outer shape of the lower case 1. At this time, a receiving space (S) may be formed in the case body 100 so that the evaporator 30 can be placed therein.

The case body 100 may have a vertical cross section formed in a U-shape or U-shape so that the opening is formed at the top, but is not necessarily limited thereto. For example, the case body 100 with the opening may be formed in various shapes in consideration of the structure of the object (vehicle) on which the lower case 1 is installed.

The drain port 130 may be formed on one side of the case body 100 to communicate with the receiving space (S) formed in the case body 100. In addition, condensate formed by heat exchange in the evaporator 30 may be discharged to the outside through the drain port 130.

The protrusion 200 may be formed to protrude from the case body 100 . As shown in FIG. 4 , the protrusion 200 may be formed to protrude from the lower surface 110 of the case body 100 to the lower side, outside of the case body 100 . At this time, the width of the protrusion 200 may be formed to be larger than the width of the end of the fusing device 400.

The protrusion 200 partially increases the thickness T of the case body 100. For example, the protrusion 200 increases the thickness T of a portion of the case body 100 downward. Accordingly, when heat is applied to the protrusion 200, the heat is first applied to the protrusion 200 and then transferred to the case body 100, thereby preventing damage or thermal deformation of the case body 100 due to the heat. can do.

For example, when heat is applied to the lower surface 110 of the case body 100 with the protrusion 200 removed from the case body 100, fusion occurs in contact with the lower surface 110 of the case body 100. With respect to the end of the device 400, a portion of the case body 100 corresponding to the end may be damaged or thermally deformed by heat. Accordingly, durability of the case body 100 may be reduced due to the heat.

However, since the lower case 1 according to the embodiment can buffer the heat applied to the case body 100 through the end of the fusing device 400 using the protrusion 200, the case body (100) caused by the heat The insulation member 300 can be attached to the bottom surface 120 of the case body 100 without damaging the 100.

The protrusion 200 may be formed in a cylindrical shape. At this time, the protrusion height (H) of the protrusion 200 is formed to be greater than the thickness (T) of the case body 100 to prevent or minimize damage or thermal deformation of the case body 100 due to the heat.

When looking at the bottom surface 120 of the case body 100 with reference to FIG. 2, the protrusion 200 and a portion of the insulation member 300 disposed across the case body 100 may be arranged to overlap. . That is, the protrusion 200 and a portion of the insulation member 300 disposed across the case body 100 may be arranged to overlap in the vertical direction. For example, the insulation member 300 may be disposed on an imaginary line (L) passing perpendicularly through the center (C) of the protrusion. Accordingly, the protrusion 200 and the insulation member 300 may be arranged to overlap in the vertical direction.

As shown in FIG. 2, the bottom surface 120 of the case body 100 and the insulation member 300 may be fused by heat applied to the protrusion 200 at the four heat fusion points P. Alternatively, the bottom surface 120 of the case body 100 and the insulation member 300 may be fused by heat applied to the insulation member 300 at the four heat fusion points P. Here, as an example, four heat fusion points (P) are provided, but this is not necessarily limited. For example, considering the fixing force of the insulation member 300 to the case body 100, it is of course possible to provide more than or less than four heat fusion points (P).

Figure 5 is a diagram showing another example of a protrusion of a lower case according to an embodiment.

Referring to FIG. 5, the protrusion 200 is a protrusion body 210 that protrudes downward from the lower surface 110 of the case body 100 and a protrusion body 210 on the end surface 211 of the protrusion body 210. It may include a boss 220 protruding in the protruding direction. That is, the protrusion 200 may be disposed on the case body 100 in a structure in which a boss 220 is further formed at the end of the protrusion 200.

The protruding body 210 may be formed in a cylindrical shape. Here, the protruding body 210 is formed in a cylindrical shape as an example, but is not limited thereto. For example, in consideration of thermal damage or thermal deformation, it may be formed into various shapes such as square pillars or hexagonal pillars.

The boss 220 guides one side of the fusion device 400 so that the fusion device 400 can apply heat to the end surface 211 of the protruding body 210.

At this time, the boss 220 may be formed in a cylindrical shape with a space formed therein. Here, the boss 220 is formed in a cylindrical shape as an example, but is not limited thereto. For example, it may be formed in various shapes depending on the shape of the fusing device 400 that applies heat to the protruding body 210.

Accordingly, the welding device 400 guided by the boss 220 contacts the end surface 211 and then applies heat to weld the bottom surface 120 of the case body 100 and the insulation member 300.

Figure 6 is a diagram showing another example of the protrusion of the lower case according to the embodiment.

Referring to FIG. 6, the protrusion 200a may be formed in a shape whose width (W) increases toward the case body 100. For example, the protrusion 200a may be formed in the shape of upper and lower beams, and as shown in FIG. 6, the protrusion 200a may be formed in a trapezoidal cross-section. Accordingly, since the width W of the protrusion 200a on the side of the case body 100 is relatively larger than the end portion, even if the heat is applied to the protrusion 200a, the case body 100 is damaged or thermally deformed by the heat. can be further minimized.

Meanwhile, a groove 230 may be formed concavely at the end of the protrusion 200a. In addition, the groove 230 guides one side of the fusing device 400 so that heat can be applied to the end surface 211 of the protrusion 200a.

The insulation member 300 may be fixed to the bottom surface 120 of the case body 200 through a heat fusion method. Here, the insulation member 300 may be formed of an elastic material. At this time, the insulation member 300 may be called an insulation pad or lower insulation.

As shown in Figures 2 and 3, the insulation member 300 may be formed in a 'ㄷ' shape, but is not necessarily limited thereto.

Figure 7 is a diagram showing an evaporator disposed in the lower case according to an embodiment.

Referring to FIG. 7 , the insulation member 300 is disposed between the lower portion of the evaporator 30 and the bottom surface 120 of the case body 200 to shield the space between the evaporator 30 and the case body 200. Accordingly, the evaporator 30 is disposed on the upper part of the insulation member 300, and the lower part of one side of the evaporator 30 may be in close contact with the insulation member 300 due to the self-weight of the evaporator 30.

Accordingly, a temperature difference may occur inside the vehicle air conditioning system based on one side and the other side disposed adjacent to the drain port 130 of the evaporator 30. Accordingly, when condensate is generated, the condensate can be discharged to the outside through the drain port 130.

In summary, the lower case 1 can secure the insulation member 300 to the inner bottom surface 120 of the case body 100 through a heat fusion method. At this time, the thickness (T) of the case body 100 is partially increased using the protrusions (200, 200a) and the heat application point of the fusion device 400 is limited, thereby preventing damage or thermal deformation due to heat application. It can be prevented. Furthermore, the accuracy of the thermal fusion process can be improved by guiding the fusion device 400 through the boss 220 or groove 230 formed on the protrusions 200 and 200a.

Accordingly, the lower case 1 secures the insulation member 300 to the case body 100 without a separate means (double-sided adhesive tape) or structure for fixing the insulation member 300 to the case body 100. It can be fixed properly.

And, since the insulation member 300 is fixed to the case body 100 by heat fusion, the lower case 1 can be provided as a single part in the manufacturing process of the vehicle air conditioning system.

Although the present invention has been described above with reference to embodiments, those skilled in the art can make various modifications and modifications to the present invention without departing from the spirit and scope of the present invention as set forth in the claims below. You will understand that you can change it. And, the differences related to these modifications and changes should be construed as being included in the scope of the present invention as defined in the appended claims.

1: Lower case
30: Evaporator
100: case body 130: drain port
200: protrusion
300: insulation member

Claims (8)

In the lower case of a vehicle air conditioning system,
A case body with a drain port formed thereon;
a heat insulating member disposed on the inner bottom of the case body; and
It includes a plurality of protrusions formed to protrude from the case body,
A boss is further formed at an end of the protrusion disposed to overlap the insulation member with the case body in between,
A lower case in which the insulation member is fixed to the bottom of the case body by heat fusion. delete According to paragraph 1,
When heat is applied to the protrusion, the heat is transferred to the case body through the protrusion to attach the insulation member to the case body. delete According to paragraph 1,
The protrusion is a lower case whose width increases toward the case body. In the lower case of a vehicle air conditioning system,
A case body with a drain port formed thereon;
a heat insulating member disposed on the inner bottom of the case body; and
It includes a plurality of protrusions formed to protrude from the case body,
A lower case in which a concave groove is formed at an end of the protrusion disposed to overlap the insulation member with the case body in between. According to paragraph 1,
A lower case in which the protrusion height (H) of the protrusion is greater than the thickness (T) of the case body. According to paragraph 1,
A lower case in which an evaporator is disposed on top of the insulation member, and one side of the evaporator is in close contact with the insulation member due to the evaporator's own weight.

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