KR20230000957A - Mass damper for vehicle air conditioning system - Google Patents

Abstract

The present invention relates to a mass damper for refrigerant piping for isolating vibration and noise of piping for the flow of refrigerant circulating in a vehicle air conditioner system. An objective of the present invention is to provide a mass damper for a vehicle air conditioner system configured to prevent cracks due to thermal deformation on an outer circumferential surface of a casing.

Description

Mass damper for vehicle air conditioning system}

The present invention relates to a mass damper for a vehicle air conditioner system, and more particularly, to a mass damper for a refrigerant pipe for isolating vibration and noise of a pipe for the flow of a refrigerant circulating in an air conditioner system.

BACKGROUND ART In general, an air conditioner system for a vehicle is a system that maintains a pleasant indoor environment by adjusting temperature and humidity of the interior of a vehicle.

The air conditioning system controls the temperature and humidity inside the vehicle through compression, condensation, expansion, and evaporation of refrigerant, and the air conditioning system includes a compressor, a condenser, an expansion valve, and an evaporator connected through refrigerant pipes.

In general, the air conditioner system vibrates according to the air flow of the refrigerant. In the case of the compressor, vibration and noise are induced in the process of compressing the refrigerant, and the vibration of the compressor is transmitted to the refrigerant pipe.

Conventionally, in order to reduce vibration and noise of the refrigerant pipe, a mass damper is separately installed in the refrigerant pipe.

A conventional mass damper is composed of a mass and a casing formed outside the mass, and the mass and the casing are made of different materials.

Conventional mass dampers have a problem in that cracks occur on the outer circumferential surface of the casing due to a difference in expansion rate according to the material of the mass body and casing when exposed to rapid temperature change conditions. In addition, the conventional mass damper has problems in that moisture and foreign substances are introduced into the casing through cracks in the casing and durability is deteriorated.

In order to improve this problem, conventionally, a thermal shock pad is covered on the casing to prevent the occurrence of crabs in the casing, or a thermal shock absorption hole is formed on the outer circumferential surface of the casing, and the mass body is exposed through the absorption hole. Painting was performed to prevent moisture and foreign substances from entering the casing.

However, there is a problem of incurring additional cost of the mass damper when the disused paint and the heat shield pad are applied.

Patent Publication No. 2015-0043157

The present invention was devised in view of the above points, and a mass damper for a vehicle air conditioner system configured to prevent cracks due to thermal deformation on the outer circumferential surface of the casing due to the difference in the material and expansion rate of the mass body and the casing. It aims to provide

The object of the present invention is not limited to the above-mentioned object, and other objects of the present invention not mentioned above can be understood by the following description and can be more clearly understood by the examples of the present invention. Also, the objects of the present invention may be realized by the means and combinations indicated in the claims.

In order to achieve the above object of the present invention, the mass damper of the vehicle air conditioner system is a vibration isolator that is mounted on a refrigerant pipe for refrigerant flow in the vehicle air conditioner system to reduce vibration generated in the refrigerant pipe, and has the following configuration include

A mass damper of an air conditioner system according to the present invention includes: a mass body configured to have a predetermined mass; a casing injection-molded on the outside of the mass body and mounted at a predetermined position of the refrigerant pipe in a form surrounding the refrigerant pipe; A fixing jig insertion hole formed on an inner circumferential surface of the casing facing the refrigerant pipe to expose the mass body to the outside; includes.

According to an embodiment of the present invention, the mass damper may further include a sealing rib provided on an inner circumferential surface of the casing and disposed in a closed loop shape around an outer circumference of the fixing jig insertion hole.

In addition, according to an embodiment of the present invention, when the casing is mounted on the refrigerant pipe, the sealing rib is characterized in that it makes airtight contact with the outer circumferential surface of the refrigerant pipe, and when the casing is mounted on the refrigerant pipe, the sealing rib It is characterized in that the peripheral space of the fixing jig insertion hole is sealed together with the refrigerant pipe.

In addition, the sealing rib is characterized in that it protrudes from the inner circumferential surface of the casing.

In addition, according to another embodiment of the present invention, the sealing rib is composed of a casing and a separate material, characterized in that mounted and fixed to the inner circumferential surface of the casing.

In addition, the casing is configured to include a first casing portion and a second casing portion coupled to the first casing portion, wherein at least one of the first casing portion and the second casing portion has a mass body therein. do.

In addition, the sealing rib is selectively provided on the inner circumferential surface of the casing part having the mass body among the first casing part and the second casing part, and a plurality of fixing jig insertion holes are formed on the inner circumferential surface of the casing part having the mass body and are spaced apart from each other In this case, the sealing rib is characterized in that it is configured to simultaneously surround the outer circumference of the plurality of fixing jig insertion holes in a closed loop form.

In addition, according to another embodiment of the present invention, the mass body is made of a zinc material, and the casing is characterized in that it is made of a plastic material.

In addition, the casing is characterized in that a thermal deformation space portion formed to expose at least a part of the mass body is provided on the outer side thereof.

According to the means for solving the above problems, the mass damper of the present invention provides the following effects.

First, by locating the fixing jig insertion hole exposing the mass body to the outside on the inner circumferential side of the casing that comes into contact with the refrigerant pipe, when the casing is placed outside the refrigerant pipe, the surrounding space of the fixing jig insertion hole is sealed, and thus the rapid external It is possible to prevent cracks from occurring in the casing in a situation where a temperature change occurs, or a phenomenon in which moisture and foreign substances are introduced into the casing through cracks generated in the casing.

Second, by surrounding the outer circumference of the fixing jig insertion hole with a sealing rib, when the casing is mounted on the refrigerant pipe, the sealing rib tightly adheres to the outer circumferential surface of the refrigerant pipe, and the surrounding space of the fixing jig insertion hole is more effectively sealed. It is possible to more effectively prevent cracks from occurring on the outer circumferential surface of the casing when the temperature changes and the phenomenon that moisture and foreign substances are introduced into the casing through the cracks.

Third, since moisture and foreign substances are prevented from entering the casing without applying a conventional disused painting process or a heat shield pad, it is possible to reduce costs due to the deletion of the unused paint or heat shield pad.

Fourth, since the mass body is made of zinc, an oxide film is formed on the entire surface of the mass body, and thus, even when the mass body is exposed to the outside through the fixing jig insertion hole, corrosion by moisture and foreign substances can be prevented. In addition, deformation of the casing due to corrosion of the mass body can be prevented.

Fifth, by forming a thermal deformation space in the casing separately from the fixing jig insertion hole, a space corresponding to thermal expansion of the casing may be additionally secured.

1 shows the configuration of an air conditioning system to which a mass damper according to the present invention is applied,
2 is a view of a mass damper according to an embodiment of the present invention from the outside,
3 is an unfolded view of a mass damper according to an embodiment of the present invention;
4 is a cross-sectional view seen from AA of FIG. 3;
5 is a view of the mass damper of FIG. 3 from the inner circumferential side of the casing;
6 is a view of the mass damper of FIG. 3 from the outer circumferential side of the casing;
7 is a view of a mass damper according to an embodiment of the present invention from the bottom side,
8 shows a fixing jig supporting a mass body when injection molding a casing of a mass damper according to an embodiment of the present invention;
9 shows a form in which a mass damper according to an embodiment of the present invention is assembled to a refrigerant pipe,
Figure 10 is a view from BB in Figure 9;
11 is a view from CC of FIG. 9,
12 is a cross-sectional view showing a mass damper according to another embodiment of the present invention;
13 shows an exploded state of a mass damper according to another embodiment of the present invention,
14 shows a coupled state of a mass damper according to another embodiment of the present invention,
15 is a view from DD of FIG. 14,
16 is an unfolded view of a mass damper according to another embodiment of the present invention;
17 is a cross-sectional view seen from EE of FIG. 16;
18 is a view of the mass damper of FIG. 16 from the inner circumferential side of the casing;
19 is a view of the mass damper of FIG. 16 from the outer circumferential side of the casing;
20 illustrates a fixing jig for supporting a mass body when injection molding a casing of a mass damper according to an embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. Matters represented in the accompanying drawings may be different from those actually implemented in the drawings schematically illustrated to easily explain the embodiments of the present invention.

Throughout this specification, when a certain component is said to "include", it means that it may further include other components without excluding other components unless otherwise stated.

In addition, in this specification, the division of the names of components into "first", "second", etc. is only for distinguishing components having the same name, but does not limit the order thereof.

The present invention relates to a mass damper mounted on a refrigerant pipe for refrigerant flow in a vehicle air conditioner system to reduce vibration and noise generated in the refrigerant pipe, wherein the mass damper generates cracks due to thermal deformation on the outer circumferential surface of a casing It is configured to block the inflow of moisture and foreign substances into the casing while preventing it in advance, thereby enabling cost reduction compared to the conventional mass damper.

1 schematically shows the configuration of an air conditioner system to which a mass damper according to the present invention is applied, FIG. 2 is a view of a mass damper according to an embodiment of the present invention viewed from the outside, and FIG. 3 is one of the present invention The mass damper according to the embodiment is shown unfolded, FIG. 4 is a cross-sectional view viewed from A-A in FIG. 3, FIG. 5 is a view of the mass damper of FIG. 3 from the inner circumferential side of the casing, and FIG. 6 is the mass damper of FIG. 7 is a view from the bottom side of the mass damper according to an embodiment of the present invention, and FIG. 8 is a fixing for supporting the mass body when injection molding the casing of the mass damper according to an embodiment of the present invention A jig is shown, and FIG. 9 shows a form in which a mass damper according to an embodiment of the present invention is assembled to a refrigerant pipe, FIG. 10 is a view from B-B in FIG. 9, and FIG. 11 is a view from C-C in FIG. 12 is a cross-sectional view showing a mass damper according to another embodiment of the present invention. In addition, FIG. 13 shows a disassembled state of a mass damper according to another embodiment of the present invention, FIG. 14 shows a coupled state of a mass damper according to another embodiment of the present invention, and FIG. It is shown as seen from 14 D-D.

As shown in FIG. 1, the vehicle air conditioning system includes a compressor 1, a condenser 2, an expansion valve 3, and an evaporator 4. The compressor 1 and the condenser 2 are connected to allow refrigerant flow through a discharge pipe 11, and the condenser 2 and expansion valve 3 are connected to allow refrigerant flow through a liquid pipe 12 And, the evaporator 4 and the compressor 1 are connected through a suction pipe 13 so that the refrigerant can flow.

The discharge pipe 11, the liquid pipe 12, and the suction pipe 13 are refrigerant pipes for refrigerant flow in the air conditioning system, and the mass damper of the present invention may be mounted at a predetermined position in the refrigerant pipe.

As shown in FIGS. 2 to 4 , the mass damper 100 of the present invention includes a mass body 110 and a casing 120 .

The mass body 110 is configured to have a predetermined mass to reduce vibration of the refrigerant pipe 10, and the mass body 110 is made of a metal material having a relatively high density. For example, the mass body 110 is made of steel.

The weight and number of the mass body 110 may be changed in order to tune the vibration reduction performance of the mass damper 100 .

As shown in FIGS. 3 to 7 , the casing 120 is injection molded to the outside of the mass body 110 so as to entirely surround the mass body 110 . The casing 120 is made of a plastic material having relatively high elasticity.

The casing 120 is formed in a cylindrical shape that can be mounted on the outer circumferential surface of the refrigerant pipe 10, and the casing 120 is mounted at a predetermined position of the refrigerant pipe 10 in a form surrounding the outer circumferential surface of the refrigerant pipe 10.

When the casing 120 is mounted on the refrigerant pipe 10, the inner circumferential surface of the casing 120 faces the outer circumferential surface of the refrigerant pipe 10. A fixing jig insertion hole 121 is provided on the inner circumferential surface of the casing 120 .

During injection molding of the casing 120, a fixing jig 20 is used to fix the mass body 110 to a predetermined position in the mold. Referring to FIG. 8, the mass body 110 supported by the fixing jig 20 A fixing jig insertion hole 121 is formed in the casing 120 by injection molding the casing 120 to the outside of the.

The fixing jig insertion hole 121 is formed to extend from the inner circumferential surface of the casing 120 toward the outer circumferential surface of the casing 120. A portion is exposed to the outside of the casing 120. The mass body 110 is not exposed to the outside of the casing 120 except for the fixing jig insertion hole 121 .

The fixing jig insertion hole 121 may extend in a straight line according to the shape of the fixing jig 20, and the mass body 110 is exposed to the outside of the casing 120 by the fixing jig insertion hole 121.

The fixing jig insertion hole 121 provides a space for deformation of the casing 120 when the mass body 110 and the casing 120 undergo thermal deformation.

In addition, in order to prevent moisture or foreign matter from being introduced into the casing 120 through the fixing jig insertion hole 121, a sealing rib 122 is provided on an inner circumferential surface of the casing 120.

As shown in FIG. 5 , the sealing rib 122 is arranged in a closed loop around the outer circumference of the fixing jig insertion hole 121 to entirely surround the fixing jig insertion hole 121 . The sealing rib 122 may be applied in various loop shapes such as a rectangle or an ellipse.

The sealing rib 122 may be integrally molded with the casing 120 during injection molding of the casing 120, and in this case, the sealing rib 122 may be formed in a protruding form on an inner circumferential surface of the casing 120. In addition, the sealing rib 122 may be configured separately from the casing 120 and mounted and fixed to the inner circumferential surface of the casing 120 .

9 to 11, when the casing 120 is mounted on the outer circumferential surface of the refrigerant pipe 10, that is, the refrigerant pipe 10 penetrates the casing 120 to the inside of the casing 120. When placed, the sealing rib 122 comes into airtight contact with the outer circumferential surface of the refrigerant pipe 10 while being compressed by the refrigerant pipe 10 .

The sealing rib 122 contacts the outer circumferential surface of the refrigerant pipe 10 without a gap, thereby sealing the space around the fixing jig insertion hole 121 together with the refrigerant pipe 10 . That is, the space around the fixing jig insertion hole 121 is sealed by the sealing rib 122 and the refrigerant pipe 10 .

The sealing rib 122 seals the space around the fixing jig insertion hole 121 to prevent moisture or foreign substances from entering the casing 120 through the fixing jig insertion hole 121, and as a result The sealing rib 122 can prevent the mass damper 100 from being corroded or deformed due to the inflow of moisture or foreign substances.

In addition, as shown in FIG. 5, when a plurality of fixing jig insertion holes 121 are formed on the inner circumferential surface of the casing 120 and are spaced apart from each other, the sealing rib 122 is formed on the outer circumference of the plurality of fixing jig insertion holes 121 It may be configured to simultaneously surround in a closed loop form.

Although not shown in the drawings, when a plurality of fixing jig insertion holes 121 are provided on the inner circumferential surface of the casing 120, it is also possible to place sealing ribs 122 on the outer circumference of each fixing jig insertion hole 121 Do.

Meanwhile, as shown in FIGS. 2 to 5 , the casing 120 includes a first casing part 123 and a second casing part 126 in order to secure injection moldability and mounting assembly to the refrigerant pipe 10. ) may be configured to include.

The first casing part 123 and the second casing part 126 may be integrally connected through a hinge part 129, and the first casing part 123 and the second casing part 126 are hooks 124 and can be coupled through the hooking unit 127 and the like.

The first casing part 123 and the second casing part 126 may have a structure in which the cylindrical casing 120 is divided in half. That is, the first casing part 123 and the second casing part 126 may be formed in a semi-cylindrical shape.

The first casing portion 123 may be provided with hooks 124 and fixing pins 125 on both side portions thereof, and the second casing portion 126 may include hooking portions 127 and coupling holes on both side portions thereof. (128) may be provided respectively. The hook 124 is inserted into the hooked portion 127 and fixed, and the fixing pin 125 is press-fitted into the coupling hole 128 and fixed.

The side part of the first casing part 123 and the side part of the second casing part 126 are parts that abut or face each other when the first casing part 123 and the second casing part 126 are combined. , When the hook 124 and the hooked portion 127 and the fixing pin 125 and the coupling hole 128 are fastened, they contact or face each other. When the first casing part 123 and the second casing part 126 are coupled, the hinge part 129 is bent in an arc shape or folded in half.

When the casing 120 is molded using a plastic composite material including glass fiber or the like, there is a possibility that the hinge part 129 may be damaged due to repeated folding or the like.

When the hinge part 129 is deleted, the casing 120' is a first casing part 123' having a first hook 131 and a first hooked part 132, as shown in FIG. and a second casing portion 126' having a second hook 133 and a second hooked portion 134.

The first casing portion 123' may have a first hook 131 and a first hooked portion 132 provided on both side portions thereof, and the second casing portion 126' may have a second hook 131 and a first hooking portion 132 on both side portions thereof. A hook 133 and a second hooked portion 134 may be respectively provided.

14 and 15, when the first casing part 123' and the second casing part 126' are coupled, the first hook 131 is inserted into the second hooked part 134 and caught. and the second hook 133 is hooked while being inserted into the first hooked portion 132 .

As shown in FIGS. 4 and 12, the mass body 110 provided inside the casing 120 is disposed only inside one of the first casing part 123 and the second casing part 126, or Alternatively, it may be disposed inside both the first casing part 123 and the second casing part 126, respectively. In other words, at least one of the first casing part 123 and the second casing part 126 has the mass body 110 therein.

Here, the mass body 110 provided inside the first casing portion 123 may be referred to as a first mass body 110a, and the mass body 110 provided inside the second casing portion 126 may be referred to as a first mass body 110a. It can be called a two-mass body 110b (see FIG. 4).

In addition, the fixing jig insertion hole 121 and the sealing rib 122 may be selectively provided on an inner circumferential surface of the casing part having the mass body 110 among the first casing part 123 and the second casing part 126. .

Referring to FIG. 5, in the case of the fixing jig insertion hole 121 formed on the inner circumferential surface of the first casing portion 123, it may be referred to as the first fixing jig insertion hole 121a, and the second casing portion 126 In the case of the fixing jig insertion hole 121 formed on the inner circumferential surface, it may be referred to as a second fixing jig insertion hole 121b. In addition, the sealing rib 122 formed on the inner circumferential surface of the first casing portion 123 may be referred to as a first sealing rib 122a, and the sealing rib 122 formed on the inner circumferential surface of the second casing portion 126 is It may be referred to as a second sealing rib 122b.

12, when the mass body 110 is provided only in the first casing part 123, in order to increase the contact of the first sealing rib 122a with respect to the refrigerant pipe 10, the second A second sealing rib 122b may also be provided in the casing 126 .

And as shown in FIGS. 4 and 5, a plurality of fixing jig insertion holes 121 are formed on the inner circumferential surface of the casing part equipped with the mass body 110 among the first casing part 123 and the second casing part 126, When spaced apart, the sealing ribs 122 may be configured to simultaneously surround the outer circumferences of the plurality of fixing jig insertion holes 121 in a closed loop form.

More specifically, as shown in FIG. 4, when the mass body 110 is provided in each of the first casing part 123 and the second casing part 126, as shown in FIG. 5, it is formed on the inner circumferential surface of the first casing part 123. One first sealing rib 122a simultaneously surrounds the outer circumference of the plurality of first fixing jig insertion holes 121a, and the plurality of first fixing jig insertion holes formed on the inner circumferential surface of the second casing portion 126 ( One second sealing rib 122b simultaneously surrounds the outer circumference of 121b).

The mass damper 100 of the present invention can adjust the shape and number of the mass body 110 in order to tune its vibration reduction performance. For example, in the case of using one mass body 110, the mass body 110 may be provided in only one of the first casing part 123 and the second casing part 126 (see FIG. 12), and two In case of using the mass body 110, the mass body 110 may be provided in each of the first casing part 123 and the second casing part 126 (see FIG. 4).

In addition, the mass damper 100 can change the shape and size of the fixing jig insertion hole 121 in various ways in order to secure a thermal deformation space of the casing 120 according to external temperature changes.

The mass damper 100 of the present invention configured as described above is configured by locating the fixing jig insertion hole 121 exposing the mass body 110 to the outside on the inner circumferential side of the casing 120 that comes into contact with the refrigerant pipe 10. When the casing 120 is disposed on the outside of the refrigerant pipe 10, the space around the fixing jig insertion hole 121 is sealed, and thus the casing 120 cracks in a situation where a rapid change in external temperature occurs. It is possible to prevent a phenomenon in which moisture and foreign substances are introduced into the casing 120 through cracks generated in the casing 120 or the casing 120 .

In addition, the mass damper 100 surrounds the outer circumference of the fixing jig insertion hole 121 with a sealing rib 122, so that when the casing 120 is mounted on the refrigerant pipe 10, the sealing rib 122 A phenomenon in which cracks occur on the outer circumferential surface of the casing 120 when the external temperature changes rapidly. In addition, it is possible to effectively prevent the inflow of moisture and foreign substances into the casing 120 through the cracks.

In addition, since the mass damper 100 prevents moisture and foreign substances from entering the casing 120 without applying a conventional disused painting process or a heat shield pad, cost reduction due to the removal of unused paint or heat shield pads is reduced. It is possible.

Meanwhile, a mass damper according to another embodiment of the present invention will be described with reference to FIGS. 16 to 20 attached thereto. In this case, some or all of descriptions of configurations overlapping those of the above-described embodiments may be omitted.

16 is an unfolded view of a mass damper according to another embodiment of the present invention, FIG. 17 is a cross-sectional view seen from E-E of FIG. 16, FIG. 18 is a view of the mass damper of FIG. 16 from the inner circumferential side of the casing, FIG. 19 is a view of the mass damper of FIG. 16 from the outer circumferential side of the casing, and FIG. 20 shows a fixing jig supporting the mass body when injection molding the casing of the mass damper according to an embodiment of the present invention.

16 to 19, a mass damper 200 according to another embodiment of the present invention includes a mass body 210 and a casing 220.

The mass body 210 is formed to have a predetermined mass in order to reduce vibration of the refrigerant pipe (see reference numeral 10 in FIGS. 9 to 11) and is made of a metal material having a relatively high density. Specifically, the mass body 210 is made of a zinc (Zn) material.

Since the mass body 210 is made of a zinc material, its surface is oxidized in the air to generate an oxide film (ie, a zinc oxide layer). The oxide film is densely formed on the surface of the mass body 210 with a very thin thickness (eg, nm unit thickness) to prevent additional corrosion and internal corrosion of the mass body 210 .

That is, the oxide film is formed on the surface of the mass body 210 to prevent the inside of the mass body 210 from being corroded. The oxide film is formed before the casing 220 is injection molded on the surface of the mass body 210 .

The casing 220 is formed of a material having elasticity higher than that of the mass body 210 . Specifically, the casing 220 is made of a plastic material.

The casing 220 is formed in a cylindrical shape that can be assembled on the outer circumferential surface of the refrigerant pipe 10, and is mounted and disposed at a predetermined position of the refrigerant pipe 10 in a form surrounding the outer circumferential surface of the refrigerant pipe 10.

Referring to FIG. 20 , during injection molding of the casing 220, a fixing jig 20' is used to fix the mass body 210 to a predetermined position in the mold. The fixing jig 20' may be configured to support and fix the inner and outer circumferential surfaces of the mass body 210 in order to stably fix the mass body 210.

Since the casing 220 is molded on the outside of the mass body 210 fixedly supported by the fixing jig 20' as described above, at least one fixing jig insertion hole 221 is provided on the inner and outer sides of the casing 220, respectively. is formed Here, the inner portion of the casing 220 includes an inner circumferential surface of the casing 220 , and the outer portion of the casing 220 includes an outer circumferential surface of the casing 220 .

Although the mass body 210 is exposed to the outside of the casing 220 by the fixing jig insertion holes 221, since an oxide film is formed on its surface, additional corrosion and corrosion due to external moisture and foreign substances may occur. deformation is prevented.

That is, since the casing 220 is injection-molded on the outside of the mass body 210 on which the oxide film is formed, additional corrosion and deformation of the mass body 210 due to the fixing jig insertion holes 221 are prevented.

In other words, even if the mass body 210 is exposed to the outside of the casing 220 through the fixing jig insertion holes 221, the oxide film formed on the surface of the mass body 210 blocks additional corrosion and internal corrosion of the mass body 210. By doing so, deformation and durability deterioration due to corrosion of the mass body 210 can be prevented.

In addition, referring to FIG. 17 , the mass body 210 may be provided with a through hole 211 passed through by the fixing jig 20 ′ during injection molding of the casing 220 . The through hole 211 may be disposed on the same line as the fixing jig insertion hole 221 . The through hole 211 may have a smaller diameter than the fixing jig insertion hole 221 .

In addition, although the casing 220 is provided with a space for thermal deformation by the fixing jig insertion holes 221, the position and size of the fixing jig insertion holes 221 are determined by injection molding of the casing 220. It is determined by the structure of the fixing jig 20 'used during construction.

Accordingly, in order to secure a thermal deformation space of the casing 220 separately from the fixing jig insertion hole 221, the casing 220 may include at least one thermal deformation space portion 222 on its outer side. The thermal deformation space 222 may be formed through an outer portion of the casing 220 to expose at least a portion of the mass body 210 disposed inside the casing 220 .

In addition, the casing 220 has a first casing part 223 and a second casing part 224 coupled to the first casing part 223 in order to secure injection moldability and assemblability to the refrigerant pipe 10. ).

The first casing part 223 and the second casing part 224 are provided with a hook 225, a fixing pin 226, a hooked part 227, and a coupling hole 228 for their coupling. In addition, non-explained reference numeral 229 is formed integrally with the first casing part 223 and the second casing part 224 and connects the first casing part 223 and the second casing part 224. Hinge part 229 )to be.

At least one of the first casing part 223 and the second casing part 224 has a mass body 210 therein. Referring to FIG. 17 , a first mass body 210a and a second mass body 210b are respectively disposed inside the first casing part 223 and the second casing part 224 .

Since the embodiments of the present invention have been described in detail above, the terms or words used in the present specification and claims should not be construed as being limited to ordinary or dictionary meanings, and the scope of the present invention is limited to the above-described embodiments. It is not limited to examples, and various modifications and improvements of those skilled in the art using the basic concepts of the present invention defined in the following claims are also included in the scope of the present invention.

1: compressor 2: condenser
3: expansion valve 4: evaporator
10: refrigerant piping 11: discharge piping
12: liquid piping 13: suction piping
20: fixed jig
100: mass damper 110: mass body
110a: first mass body 110b: second mass body
120,120': casing 121: fixing jig insertion hole
121a: first fixing jig insertion hole 121b: second fixing jig insertion hole
122: sealing rib 122a: first sealing rib
122b: second sealing rib 123,123': first casing part
124: hook 125: fixing pin
126,126': second casing part 127: hooking part
128: coupling hole 129: hinge part
131: first hook 132: first hooking unit
133: second hook 134: second hooking unit

Claims (14)

A mass damper mounted on a refrigerant pipe for refrigerant flow in a vehicle air conditioning system to reduce vibration generated in the refrigerant pipe,
a mass body configured to have a predetermined mass;
a casing injection-molded on the outside of the mass body and mounted at a predetermined position of the refrigerant pipe in a form surrounding the refrigerant pipe;
a fixing jig insertion hole formed on an inner circumferential surface of the casing facing the refrigerant pipe to expose the mass body to the outside;
Mass damper of a vehicle air conditioning system comprising a.
The method of claim 1,
The mass damper of the air conditioning system for a vehicle further comprising a sealing rib provided on an inner circumferential surface of the casing and disposed in a closed loop shape around an outer circumference of the fixing jig insertion hole.
The method of claim 2,
When the casing is mounted on the refrigerant pipe, the sealing ribs airtightly contact the outer circumferential surface of the refrigerant pipe.
The method of claim 3,
The mass damper of the vehicle air conditioner system, characterized in that when the casing is mounted on the refrigerant pipe, the sealing rib seals the space around the fixing jig insertion hole together with the refrigerant pipe.
The method of claim 2,
The sealing rib is a mass damper for a vehicle air conditioning system, characterized in that protruded from the inner circumferential surface of the casing.
The method of claim 2,
The sealing rib is a mass damper for a vehicle air conditioning system, characterized in that it is composed of a casing and a separate material and is mounted and fixed on the inner circumferential surface of the casing.
The method of claim 1,
The casing includes a first casing part and a second casing part coupled to the first casing part, and at least one of the first casing part and the second casing part has a mass body therein. Mass damper in vehicle air conditioning system.
The method of claim 1,
The sealing rib is selectively provided on an inner circumferential surface of a casing part having a mass body among the first casing part and the second casing part,
When a plurality of fixing jig insertion holes are formed and spaced apart from each other on the inner circumferential surface of the casing having the mass body, the sealing ribs are configured to simultaneously surround the outer circumferences of the plurality of fixing jig insertion holes in a closed loop form. Mass damper in vehicle air conditioning system.
The method of claim 1,
The mass damper of the vehicle air conditioning system, characterized in that the mass body is made of steel material, and the casing is made of plastic material.
The method of claim 1,
The mass damper of the vehicle air conditioning system, characterized in that the mass body is made of zinc material, and the casing is made of plastic material.
The method of claim 10,
The mass damper of the vehicle air conditioner system, characterized in that the casing further includes a thermal deformation space formed to expose at least a part of the mass body on the outer side thereof.
A mass damper mounted on a refrigerant pipe for refrigerant flow in a vehicle air conditioning system to reduce vibration generated in the refrigerant pipe,
A mass body having a predetermined mass;
a casing that is injection molded outside the mass body and disposed in a form surrounding the refrigerant pipe at a predetermined position of the refrigerant pipe;
a fixing jig insertion hole formed on an inner circumferential surface of the casing facing the refrigerant pipe to expose the mass body to the outside;
A mass damper for a vehicle air conditioning system, characterized in that the mass body is made of zinc, and the casing is made of plastic.
The method of claim 12,
The casing includes a first casing part and a second casing part coupled to the first casing part, and at least one of the first casing part and the second casing part has a mass body therein. Mass damper in vehicle air conditioning system.
The method of claim 12,
The mass damper of the vehicle air conditioner system, characterized in that the casing further includes a thermal deformation space formed to expose at least a part of the mass body on the outer side thereof.

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