Installation structure of compressor and bracket assembly supporting compressor

Abstract

The present invention relates to an installation structure of a compressor and a bracket assembly supporting the compressor, and comprises: a plurality of fastening parts arranged along the longitudinal direction (X) on the compressor; a plurality of support parts arranged on the bracket assembly supporting the compressor, the support parts being arranged at positions corresponding to the plurality of fastening parts; connection members connecting the fastening parts and the support parts; and a plurality of vibration-isolating members that are respectively disposed between the plurality of fastening parts and the plurality of support parts and absorb vibrations of the compressor. The elastic modulus of the plurality of vibration-isolating members may be configured differently depending on the distance from the center of gravity (W) of the compressor, and thus the present invention has the effect of effectively absorbing and attenuating vibrations of the compressor.

Description

Compressor installation structure and bracket assembly supporting the compressor

[0001] The present invention relates to an installation structure of a compressor and a bracket assembly for supporting the compressor, and more specifically, to an installation structure of a compressor and a bracket assembly for supporting the compressor that can effectively absorb and alleviate vibration of the compressor.

[0002] Typically, automobiles are equipped with air conditioning (A / C) systems to cool and heat the interior. These A / C systems, as a component of the cooling system, include a compressor that compresses low-temperature, low-pressure gaseous refrigerant drawn from the evaporator into high-temperature, high-pressure gaseous refrigerant and sends it to the condenser.

[0003] Compressors can be divided into reciprocating types, which compress refrigerant through the reciprocating motion of a piston, and rotary types, which compress through a rotary motion. Reciprocating types, depending on the method of transmission of the drive source, include crank types, which transmit refrigerant to multiple pistons using a crank, and swash plate types, which transmit refrigerant through a rotating shaft with a swash plate installed. Rotary types include vane rotary types, which use a rotating rotary shaft and vanes, and scroll types, which use an orbiting scroll and a fixed scroll.

[0004] Scroll compressors are widely used for refrigerant compression in air conditioning systems because they can achieve a relatively high compression ratio compared to other types of compressors, and because the suction, compression, and discharge cycles of the refrigerant are smoothly connected to obtain stable torque.

[0005] Scroll compressors may be implemented as electric compressors, in which case they may be named electric compressors and fall under the category of scroll compressors.

[0006] In the case of an electric scroll compressor, the refrigerant is compressed through the interaction between the orbiting scroll and the fixed scroll. At this time, the orbiting scroll is connected to an eccentric bush located at the end of a drive shaft connected to a motor, and as the drive shaft rotates, the rotational force transmitted by the eccentric bush forms a compression region with the fixed scroll. The compressed refrigerant is then discharged through a discharge port formed in the fixed scroll.

[0007] Recently, as electric vehicles powered by secondary batteries have become more widespread, electric compressors are becoming more preferred.

[0008] Meanwhile, FIGS. 1 and 2 disclose a bracket assembly (20) supporting a conventional compressor (10).

[0009] Referring to FIGS. 1 and 2, one form of a conventional compressor (10) may include a motor housing (11), an inverter housing (12), and a rear housing (13). A motor, etc. may be placed inside the motor housing (11), an inverter, etc. may be placed inside the inverter housing (12), and a discharge chamber is generally formed inside the rear housing (13), and a compression mechanism such as a rotating scroll and a fixed scroll may be placed together.

[0010] Typically, in a conventional compressor (10), a motor, etc. is built into the inside of the motor housing (11), so the motor housing (11) and inverter housing (12) are relatively heavier than the rear housing (13).

[0011] Therefore, the center of gravity (W) of the conventional compressor (10) is formed on the motor housing (11).

[0012]

[0013] Meanwhile, a bracket assembly (20) is used to mount a conventional compressor (10) on a vehicle. First, a pair of fastening parts (14) are arranged on both sides of a motor housing (11) in a conventional compressor (10), and one fastening part (15) is arranged on the front of a rear housing (13).

[0014] The bracket assembly (20) includes a bracket body (21), a plurality of support parts (22, 23) positioned at positions corresponding to the fastening parts (14, 15) on the bracket body (21), and a plurality of fixing parts (24) for fixing the bracket body (21) to the vehicle.

[0015] Each fastening member (14, 15) is connected to a corresponding support member (22, 23) by a fastening member (25).

[0016] And, inside each support member (22, 23), a rubber bush (27a, 27b) made of rubber is arranged. The rubber bush (27a, 27b) absorbs and alleviates vibrations generated in the compressor (10) by elasticity.

[0017] Referring to Fig. 2, for example, when yawing vibration (arrow Y) occurs in the longitudinal direction (X) of the compressor (10), the rubber bushes (27a, 27b) absorb the yawing vibration (V) in the up-and-down direction (P) to alleviate the vibration of the compressor (10) and prevent damage from occurring due to malfunction or excessive vibration.

[0018]

[0019] Generally, vibration is applied more strongly to the support (22) located closer to the center of gravity (W) of the compressor (10) than to the support (23) located farther away.

[0020] However, in the case of the conventional bracket assembly (20), the elastic modulus of each rubber bush (27a, 27b) placed on each support member (22, 23) was all the same.

[0021] Accordingly, a relatively larger yawing vibration is applied to the rubber bush (27a) arranged on the support (22), and a relatively smaller yawing vibration is applied to the rubber bush (27b) arranged on the support (23).

[0022] This causes an imbalance in the vibration isolation function, weakening the vibration isolation function of the compressor (10) and causing a problem of more rapidly deteriorating the durability of the rubber bush (27a) of the support (22) located close to the center of gravity (W) of the compressor.

[0023] The present invention has been devised to solve the problems in the related technical field as described above, and the purpose of the present invention is to provide an installation structure for a compressor and a bracket assembly for supporting the compressor that can effectively absorb and alleviate vibration of the compressor.

[0024] The present invention for achieving the above objects relates to a compressor installation structure, comprising: a plurality of fastening parts arranged along a longitudinal direction (X) of a compressor; a plurality of support parts arranged at positions corresponding to the plurality of fastening parts on a bracket assembly that supports the compressor; a fastening member connecting the fastening parts and the support parts; and a plurality of vibration isolation members arranged between the plurality of fastening parts and the plurality of support parts, respectively, and absorbing vibration of the compressor; wherein elastic moduli of the plurality of vibration isolation members may differ depending on a distance from a center of gravity point (W) of the compressor.

[0025] Additionally, in an embodiment of the present invention, the elasticity coefficient of a vibration isolation member arranged on a support portion that is relatively close to the center of gravity point (W) of the compressor may be formed to be greater than the elasticity coefficient of a vibration isolation member arranged on a support portion that is relatively far from the center of gravity point (W) of the compressor.

[0026] Additionally, in an embodiment of the present invention, the elastic coefficient of the plurality of vibration insulating members may be inversely proportional to the distance between the center of gravity point (W) of the compressor and the support member.

[0027] Additionally, in an embodiment of the present invention, the center of gravity point (W) of the compressor can be located between the plurality of support parts based on the longitudinal direction (X) of the bracket assembly.

[0028] In addition, in an embodiment of the present invention, the plurality of fastening parts may be arranged at positions symmetrical to each other with respect to the width direction (Y) of the compressor, and the plurality of support parts may be arranged at positions symmetrical to each other with respect to the width direction (Y) of the bracket assembly.

[0029] In addition, in an embodiment of the present invention, the fastening portion, the support portion, and the vibration isolation member may be arranged to be inclined at a predetermined angle (θ) with respect to the vertical direction (Z) of the compressor.

[0030] In addition, in an embodiment of the present invention, the plurality of fastening parts may be arranged at angles opposite to each other at positions corresponding to each other on both sides of the compressor based on the width direction (Y) of the compressor, and the plurality of support parts may be arranged at angles opposite to each other at positions corresponding to the plurality of fastening parts based on the width direction (Y) of the bracket assembly.

[0031] In addition, in an embodiment of the present invention, some of the fastening parts among the plurality of fastening parts are arranged on both sides of the compressor based on the width direction (Y) of the compressor, some of the fastening parts other than some of the fastening parts among the plurality of fastening parts are arranged on the front side of the compressor based on the length direction (X) of the compressor, some of the support parts among the plurality of support parts are arranged on both sides of the bracket assembly based on the width direction (Y) of the bracket assembly, and some of the support parts other than some of the support parts among the plurality of support parts may be arranged at positions corresponding to the other part of the fastening parts on the front side of the compressor based on the length direction (X) of the bracket assembly.

[0032] Additionally, in an embodiment of the present invention, the other part of the fastening portion and the other part of the support portion may be arranged on an extension line (W1) of the center of gravity (W) of the compressor.

[0033] Additionally, in an embodiment of the present invention, the plurality of fastening parts may be formed at the same position based on the vertical direction (Z).

[0034] In addition, in an embodiment of the present invention, the vibration isolation member is made of a rubber material, and the elastic coefficient of the vibration isolation member can be determined by setting at least one of the hardness, component, or thickness of the rubber material.

[0035] The present invention relates to a bracket assembly, and in a compressor having a plurality of fastening portions arranged along a longitudinal direction (X), the bracket assembly comprises: a support frame including an upper body having a plurality of support portions arranged at positions corresponding to the plurality of fastening portions, and a lower body connected to a lower portion of the upper body and fixing the upper body to a vehicle; a plurality of vibration-isolating members arranged in insertion grooves formed in the plurality of support portions and absorbing vibration of the compressor; and a fastening member arranged to penetrate the vibration-isolating members and connecting the fastening portions and the support portion; wherein elastic moduli of the plurality of vibration-isolating members may differ depending on a distance from a center of gravity point (W) of the compressor.

[0036] Additionally, in an embodiment of the present invention, the elastic coefficient of the plurality of vibration insulating members may be inversely proportional to the distance between the center of gravity point (W) of the compressor and the support member.

[0037] Additionally, in an embodiment of the present invention, the center of gravity point (W) of the compressor may be located between the plurality of support members.

[0038] Additionally, in an embodiment of the present invention, the plurality of fastening parts may be arranged at positions symmetrical to each other with respect to the width direction (Y) of the compressor, and the plurality of support parts may be arranged at positions symmetrical to each other with respect to the width direction (Y) of the bracket assembly.

[0039] In addition, in an embodiment of the present invention, some of the fastening parts among the plurality of fastening parts are disposed on both sides of the compressor based on the width direction (Y) of the compressor, some of the fastening parts other than some of the fastening parts among the plurality of fastening parts are disposed on the front side of the compressor based on the longitudinal direction (X) of the compressor, some of the support parts among the plurality of support parts are disposed on both sides of the bracket assembly based on the width direction (Y) of the bracket assembly, and some of the support parts other than some of the support parts among the plurality of support parts may be disposed at positions corresponding to the other part of the fastening parts on the front side of the compressor based on the longitudinal direction (X) of the bracket assembly.

[0040] According to the present invention, by applying vibration insulating members having different elastic coefficients in consideration of the distance between the center of gravity of the compressor and the support portion of the bracket assembly, vibration generated in the compressor can be effectively absorbed and alleviated.

[0041] This can prevent performance degradation or damage to the compressor due to vibration and improve vehicle mountability.

[0042] In addition, the durability of the vibration isolation member close to the center of gravity of the compressor can be prevented from being relatively weakened, thereby uniformizing or improving the overall service life of the vibration isolation member.

[0043] Fig. 1 is a plan view showing a bracket assembly supporting a conventional compressor.

[0044] Fig. 2 is a side view showing a bracket assembly supporting a conventional compressor.

[0045] Figure 3 is a plan view showing a compressor structure to which the first embodiment of the present invention is applied.

[0046] Fig. 4 is a side view showing a compressor structure to which the first embodiment of the present invention is applied.

[0047] Figure 5 is a plan view showing a compressor support structure and bracket assembly of the first embodiment of the present invention.

[0048] Figure 6 is a side view showing a compressor support structure and bracket assembly according to the first embodiment of the present invention.

[0049] Figure 7 is a plan view showing a compressor structure to which the second embodiment of the present invention is applied.

[0050] Fig. 8 is a side view showing a compressor structure to which the second embodiment of the present invention is applied.

[0051] Figure 9 is a plan view showing a compressor support structure and bracket assembly of the second embodiment of the present invention.

[0052] Fig. 10 is a side view showing a compressor support structure and bracket assembly according to a second embodiment of the present invention.

[0053] Fig. 11 is a front view showing a compressor support structure and bracket assembly according to a third embodiment of the present invention.

[0054] Fig. 12 is a side cross-sectional view showing the internal structure of a compressor according to an embodiment of the present invention.

[0055] The advantages and features of the present invention, and the methods for achieving them, will become clearer with reference to the embodiments described in detail below together with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but may be implemented in various different forms. These embodiments are provided solely to ensure that the disclosure of the present invention is complete and to fully inform those skilled in the art of the scope of the invention, and the present invention is defined solely by the scope of the claims.

[0056] The shapes, sizes, ratios, angles, numbers, etc. disclosed in the drawings for explaining embodiments of the present invention are illustrative and are not limited to the matters illustrated in the drawings. Like reference numerals refer to like components throughout the specification. In addition, in describing the present invention, if a detailed description of a related known technology is judged to unnecessarily obscure the gist of the present invention, the detailed description thereof will be omitted. When the terms “includes,” “has,” and “consists of” are used in this specification, other parts may be added unless “only” is used. When a component is expressed in the singular, it includes a case where the plural is included unless there is a specifically explicit description.

[0057] When interpreting a component, it is interpreted as including the error range even if there is no separate explicit description.

[0058] When describing a positional relationship, for example, when the positional relationship between two parts is described as 'on top of', 'upper part of', 'lower part of', 'next to', etc., one or more other parts may be located between the two parts, unless 'right away' or 'directly' is used.

[0059] Although terms like "first" and "second" are used to describe various components, these components are not limited by these terms. These terms are used merely to distinguish one component from another. Therefore, a "first" component referred to below may also be a "second" component within the technical scope of the present invention.

[0060] Identical reference numerals throughout the specification refer to identical components.

[0061] The size and thickness of each component shown in the drawing are shown for convenience of explanation, and the present invention is not necessarily limited to the size and thickness of the component shown.

[0062] The individual features of the various embodiments of the present invention can be partially or wholly combined or combined with each other, and as can be fully understood by those skilled in the art, various technical connections and operations are possible, and each embodiment can be implemented independently of each other or can be implemented together in a related relationship.

[0063] Hereinafter, embodiments of the present invention will be described in detail with reference to the attached drawings. The multiple embodiments described below may be applied in duplicate as long as they do not conflict with each other.

[0064]

[0065] First, referring to Fig. 12, the compressor to which the present invention is applied may be an electric compressor or a scroll compressor. The structure of the electric compressor or scroll compressor will be examined below. However, it is not necessarily limited to the above-mentioned types of compressors.

[0066] Referring to FIG. 12, an electric compressor or scroll compressor to which the present invention is applied may include a casing (110), a driving unit (120) that generates driving force inside the casing (110), a rotating shaft (130) that is rotated by the driving unit (120), and a compression mechanism (140) that is driven by the rotating shaft (130) to compress refrigerant.

[0067] The casing (110) may include a motor housing (111) that accommodates the driving unit (120), an inverter housing (112) that accommodates an inverter (150) that controls the driving unit (120), a compression mechanism (140) including a rotating scroll (142) coupled to a rotating shaft (130) and a fixed scroll (141) that compresses refrigerant by engaging the rotating scroll (142), and a rear housing (113) coupled to the fixed scroll (141) of the compression mechanism (140) and forming a discharge chamber (T).

[0068] The rotary scroll (142) of the compression mechanism (140) may be connected to the rotation shaft (130) by an eccentric bush (149), and the rear housing (113) may be fastened to the fixed scroll (141). However, this is not limited to the above, and the rear housing (113) may accommodate the compression mechanism (140) and be fastened to the motor housing (111).

[0069] The above driving unit (120) may include a stator (122) fixed to the motor housing (111) and a rotor (121) that rotates by interaction with the stator (122) inside the stator (122).

[0070] One end of the above-described rotary shaft (130) may be rotatably supported on a first bearing (171). The other end of the above-described rotary shaft (130) may be rotatably supported on a second bearing (172) and may be connected to the compression mechanism (140) by an eccentric bush (149).

[0071] In addition, the eccentric bush (149) can be rotatably supported on the third bearing (173) provided in the compression mechanism (140). And, in conjunction with the third bearing (173), it transmits rotational force to the rotating scroll (142).

[0072] The above compression mechanism (140) may include a fixed scroll (141) arranged on the opposite side of the driving unit (120) and a rotating scroll (142) that is engaged with the fixed scroll (141) to form a compression chamber (C) and rotates by the rotating shaft (130).

[0073] A discharge port (141d) for discharging the refrigerant compressed in the compression chamber (C) may be formed on the central side of the fixed scroll (141). Here, the discharge port (141d) may be communicated with a discharge chamber (T) formed between the fixed scroll (141) and the rear housing (113). In addition, an opening / closing valve (141a) for opening / closing the discharge port (141d) according to the discharge pressure may be arranged on the fixed scroll (141).

[0074] In addition, an oil recovery unit may be formed that is connected to the discharge chamber (T) and penetrates the fixed scroll (141) and the motor housing (111). A pressure reducing device (160) including a primary pressure reducing valve (161) and a secondary pressure reducing valve (152) may be arranged in the oil recovery unit. Oil recovered from the discharge chamber (T) may be supplied to the back pressure chamber after passing through the primary pressure reducing valve (161), and may be supplied to the drive unit receiving space after passing through the secondary pressure reducing valve (162).

[0075] A scroll compressor according to this configuration can transmit rotational force to the orbiting scroll (142) when power is applied to the driving unit (120) so that the rotating shaft (130) rotates together with the rotor (121). Then, the orbiting scroll (142) performs a rotational movement by the rotating shaft (130), so that the compression chamber (C) can continuously move toward the center and reduce its volume. Then, the refrigerant can be introduced into the driving unit receiving space through the refrigerant inlet (not shown) formed in the motor housing (111). Then, the refrigerant in the driving unit receiving space can be sucked into the compression chamber (C) through the refrigerant passage hole (not shown) formed in the motor housing (111). Then, the refrigerant sucked into the compression chamber (C) can be compressed and discharged to the discharge chamber (T) through the discharge port (141d) while moving toward the center along the movement path of the compression chamber (C). A series of processes are repeated in which the refrigerant discharged to the discharge chamber (T) is discharged to the outside of the scroll compressor through the refrigerant discharge port (113a) formed in the rear housing (113).

[0076] In this process, the rotary shaft (130) is rotatably supported by the first bearing (171) and the second bearing (172), and the orbiting scroll (142) is rotatably supported with respect to the rotary shaft (130) by the third bearing (173). The third bearing (173) may be formed as a bearing different from the first bearing (171) and the second bearing (172) in order to reduce the weight and size of the assembly (hereinafter, the orbiting body) of the third bearing (173) and the orbiting scroll (142).

[0077] Specifically, the first bearing (171) and the second bearing (172) fixed to the casing (110) may each be formed as ball bearings to minimize friction loss.

[0078] On the other hand, the third bearing (173) which is proportional to the weight and size of the rotating body as it rotates together with the rotating scroll (142) may be formed as a needle roller bearing or slide bush bearing which is smaller in weight and size and cheaper than a ball bearing.

[0079]

[0080] Referring to FIGS. 3 to 6, the installation structure of the compressor (100) according to the first embodiment of the present invention may include a fastening portion (115), a support portion (220), a fastening member (240), and a vibration isolation member (230).

[0081] The compressor (100) according to the first embodiment of the present invention may have a four-point support structure. That is, the structure may have four fastening members (155) and four support members (220) arranged and coupled to each other to support the compressor.

[0082] First, the compressor (100) to which the first embodiment of the present invention is applied may be the above-described electric compressor or scroll compressor, but is not necessarily limited thereto.

[0083] Referring to FIGS. 3 and 4, the compressor (100) may include a motor housing (111) in which a driving unit is accommodated inside, a rear housing (113) in which a compression mechanism (140) and a discharge chamber (T) are disposed inside, and an inverter housing (112) in which an inverter (150) is disposed inside.

[0084] Here, the driving unit (120) may be a motor composed of a rotor (121) and a stator (122), and the driving unit (120) may be heavier than other parts.

[0085] Additionally, the motor housing (111) and the inverter housing (112) may be made of iron, and the rear housing (113) may be made of aluminum.

[0086] When the motor housing (111) and inverter housing (112) portions of the compressor (100) are divided into a first region (A) and the rear housing (113) portion is divided into a second region (B), the first region (A) is relatively heavier than the second region (B), and accordingly, the center of gravity point (W) can be located in the first region (A).

[0087]

[0088] The above fastening portions (115) may be arranged in multiple numbers along the longitudinal direction (X) of the compressor (100) on the side of the compressor (100). In addition, the multiple fastening portions (115) may be arranged at the same position based on the vertical direction (Z) of the compressor.

[0089] In an embodiment of the present invention, the fastening portion (115) may include a first fastening portion (116) and a second fastening portion (117).

[0090] At this time, the first and second fastening parts (116, 117) can be arranged on the front and rear sides of the center of gravity (W) of the compressor (100) along the longitudinal direction (X) of the compressor (100) on the side of the compressor (100). That is, the first fastening part (116) can be arranged on the side of the motor housing (111) and the second fastening part (117) can be arranged on the front and rear sides based on the center of gravity (W) of the compressor (100) while being arranged on the side of the rear housing (113).

[0091] However, it is not necessarily limited to this, and the first and second fastening parts (116, 117) may be arranged to one side with respect to the center of gravity (W) of the compressor (100) along the longitudinal direction (X) of the compressor (100).

[0092] Additionally, a pair of fastening parts (115) may be formed protrudingly on each of the width direction (Y) sides of the motor housing (111) and the rear housing (113).

[0093] Specifically, the fastening parts (115) may be arranged at positions corresponding to each other on both sides of the compressor (100) based on the width direction (Y) of the compressor (100). That is, a pair of first fastening parts (116) may be arranged to protrude on both sides of the motor housing (111), and a pair of second fastening parts (117) may be arranged to protrude on both sides of the rear housing (113). However, the present invention is not limited thereto, and the first and second fastening parts (116, 117) may be arranged at positions that do not correspond to each other based on the width direction (Y) of the compressor (100).

[0094] In the first embodiment of the present invention, the center of gravity point (W) and at least two fastening parts (115) can be placed / formed in the motor housing (111).

[0095]

[0096]

[0097] Next, referring to FIGS. 5 and 6, a bracket assembly (200) to which the first embodiment of the present invention is applied may include a support frame (210), a support member (220), a vibration isolation member (230), and a fastening member (240).

[0098] The above support frame (210) may include an upper body (211) and a lower body (213). The upper body (211) may have a beam shape that surrounds the periphery of the compressor (100), and a plurality of support parts (220) may be arranged at positions corresponding to a plurality of fastening parts (115) on the upper body (211). In addition, a concave cylindrical insertion groove (225) may be formed inside each support part (220).

[0099] Accordingly, the center of gravity (W) of the compressor (100) can be located between a plurality of support members (220). When the support members (220) are respectively arranged on the front and rear sides of the center of gravity (W) of the compressor (100) along the longitudinal direction (X) of the bracket assembly (200) (or upper body (211)), the vibration isolation member (230) can more effectively absorb and alleviate the vibration of the compressor (100).

[0100] In the first embodiment of the present invention, the support part (220) may include a first support part (221) and a second support part (223). The first support part (221) may be arranged at a position corresponding to the first fastening part (116) on the upper body (211), and the second support part (223) may be arranged at a position corresponding to the second fastening part (117) on the upper body (211).

[0101] The above vibration isolation member (230) can be placed in an insertion groove (225) formed in a plurality of support members (220) and can absorb vibration of the compressor (100).

[0102] Referring to FIG. 6, in the embodiment of the present invention, the vertical direction (Z) arrangement position of the vibration isolation member (230) may be positioned on the second extension line (W2) of the center of gravity line (W) of the compressor (100). However, the present invention is not limited thereto, and the arrangement stability of the compressor may be improved by positioning the center of gravity point (W) of the compressor (100) lower than the vibration isolation member (230). In this case, the vibration isolation member (230) may be arranged above the second extension line (W2) based on the vertical direction (Z) of the compressor.

[0103] In an embodiment of the present invention, the vibration isolation member (230) may have a cylindrical shape with a central portion that is perforated and may be a rubber bush made of rubber. However, the present invention is not limited thereto and may be composed of other elastic materials.

[0104] The above vibration isolation member (230) may include a first vibration isolation member (231) and a second vibration isolation member (233). The first vibration isolation member (231) may be placed on the first support member (221), and the second vibration isolation member (233) may be placed on the second support member (223).

[0105] The above fastening member (240) can be positioned to penetrate the vibration insulating member (230) and can connect the fastening portion (115) and the support portion (220).

[0106]

[0107] In an embodiment of the present invention, the elastic coefficients of a plurality of vibration isolation members (230) arranged on a plurality of support members (220) may be configured differently depending on the distance from the center of gravity point (W) of the compressor (100).

[0108] Referring to FIG. 6, when yawing vibration (arrow Y) occurs in the longitudinal direction (X) of the compressor (100), the vibration isolation member (230) absorbs the yawing vibration (V) in the up-and-down direction (P) to alleviate the vibration of the compressor (100), thereby preventing damage from occurring due to malfunction or excessive vibration.

[0109]

[0110] In general, the closer the vibration isolation member (230) is positioned to the center of gravity (W) of the compressor (100), the greater the vibration applied.

[0111] For example, a greater vibration is applied to a first vibration isolation member (231) positioned on a first support member (221) located close to the center of gravity point (W) of the compressor (100) than to a second vibration isolation member (233) positioned on a second support member (223) located far from the center of gravity point (W) of the compressor (100).

[0112] That is, a relatively larger yawing vibration is applied to the first vibration isolation member (231) arranged on the first support member (221), and a relatively smaller yawing vibration is applied to the second vibration isolation member (233) arranged on the second support member (223).

[0113]

[0114] In the case of conventional bracket assemblies, rubber bushings having the same elastic coefficient are placed on multiple support members without considering the distance from the center of gravity of the compressor. Accordingly, rubber bushings placed on support members closer to the center of gravity of the compressor are subjected to relatively greater yaw vibration, while rubber bushings placed on support members further from the center of gravity of the compressor are subjected to relatively less yaw vibration.

[0115] As a result, it causes an imbalance in the vibration isolation function, weakens the vibration isolation function of the compressor, and causes the durability of the rubber bush located close to the center of gravity of the compressor to decrease more quickly.

[0116]

[0117] In order to solve this problem, in an embodiment of the present invention, the elasticity coefficient of the vibration isolation member (230) placed on the support member (220) relatively close to the center of gravity point (W) of the compressor (100) can be formed to be greater than the elasticity coefficient of the vibration isolation member (230) placed on the support member (220) relatively far from the center of gravity point (W) of the compressor (100).

[0118] That is, the elastic coefficient of the first vibration isolation member (231) disposed on the first support member (221) close to the center of gravity point (W) of the compressor (100) can be formed to be greater than the elastic coefficient of the second vibration isolation member (233) disposed on the second support member (223) far from the center of gravity point (W) of the compressor (100).

[0119] In this case, since the elastic coefficient of the first vibration isolation member (231) located closer to the center of gravity point (W) of the compressor (100) is greater, the yawing vibration applied relatively greatly to the first vibration isolation member (231) can be effectively absorbed and alleviated.

[0120]

[0121]

[0122] Meanwhile, referring to FIGS. 7 to 10, the installation structure of the compressor (100) according to the second embodiment of the present invention may include a fastening portion (115), a support portion (220), a fastening member (240), and a vibration isolation member (230). The compressor (100) according to the second embodiment of the present invention may have a three-point support structure. That is, the fastening portions (155) and the support portions (220) may be arranged in groups of three and coupled to each other to support the compressor.

[0123] First, the compressor (100) to which the second embodiment of the present invention is applied may be the above-described electric compressor or scroll compressor, but is not necessarily limited thereto.

[0124] Referring to FIGS. 7 and 8, the compressor (100) may include a motor housing (111) in which a driving unit is accommodated inside, a rear housing (113) in which a compression mechanism (140) and a discharge chamber (T) are disposed inside, and an inverter housing (112) in which an inverter (150) is disposed inside.

[0125] Here, the driving unit (120) may be a motor composed of a rotor (121) and a stator (122), and the driving unit (120) may be heavier than other parts.

[0126] Additionally, the motor housing (111) and the inverter housing (112) may be made of iron, and the rear housing (113) may be made of aluminum.

[0127] When the motor housing (111) and inverter housing (112) portions of the compressor (100) are divided into a first region (A) and the rear housing (113) portion is divided into a second region (B), the first region (A) is relatively heavier than the second region (B), and accordingly, the center of gravity point (W) can be located in the first region (A).

[0128]

[0129] Meanwhile, in the second embodiment of the present invention, some of the plurality of fastening parts (115) may be arranged on both sides of the compressor (100) based on the width direction (Y) of the compressor (100).

[0130] And, among the plurality of fastening parts (115), other fastening parts, excluding some of the fastening parts, can be arranged on the front side of the compressor (100) based on the longitudinal direction (X) of the compressor (100).

[0131] At this time, multiple fastening parts (115) can be arranged at the same position based on the vertical direction (Z) of the compressor.

[0132] In an embodiment of the present invention, the fastening portion (115) may include a first fastening portion (116) and a second fastening portion (117).

[0133] Accordingly, a pair of first fastening portions (116) can be formed protrudingly on both sides of the width direction (Y) of the motor housing (111), and a second fastening portion (117) can be formed protrudingly at the axial direction (X) end of the rear housing (113).

[0134] Additionally, the first fastening portion (116) may be arranged symmetrically in pairs on the side of the compressor (100), and the second fastening portion (117) may be arranged on the front of the compressor (100).

[0135] At this time, the first and second fastening parts (116, 117) can be arranged on both sides of the center of gravity (W) of the compressor (100) on the side of the compressor (100). That is, the first fastening part (116) can be arranged on the side of the motor housing (111) and the second fastening part (117) can be arranged on the front of the rear housing (113), and can be arranged on both sides based on the center of gravity (W) of the compressor (100).

[0136] However, it is not necessarily limited to this, and the first and second fastening parts (116, 117) may be arranged to one side with respect to the center of gravity (W) of the compressor (100) along the longitudinal direction (X) of the compressor (100).

[0137] In the second embodiment of the present invention, the center of gravity point (W) and at least two fastening parts (115) can be placed / formed in the motor housing (111).

[0138]

[0139] Next, referring to FIGS. 9 and 10, a bracket assembly (200) to which the first embodiment of the present invention is applied may include a support frame (210), a support member (220), a vibration isolation member (230), and a fastening member (240).

[0140] The above support frame (210) may include an upper body (211) and a lower body (213). The upper body (211) may have a beam shape that surrounds the periphery of the compressor (100), and a plurality of support parts (220) may be arranged at positions corresponding to a plurality of fastening parts (115) on the upper body (211). In addition, a concave cylindrical insertion groove (225) may be formed inside each support part (220).

[0141] Accordingly, the center of gravity point (W) of the compressor (100) can be located between a plurality of support members (220). When the support members (220) are respectively arranged on the front and rear sides along the longitudinal direction (X) of the compressor (100), the vibration isolation member (230) can more effectively absorb and alleviate the vibration of the compressor (100).

[0142] In a second embodiment of the present invention, the support part (220) may include a first support part (221) and a second support part (223). The first support part (221) may be arranged at a position corresponding to the first fastening part (116) on the upper body (211), and the second support part (223) may be arranged at a position corresponding to the second fastening part (117) on the upper body (211).

[0143] The above vibration isolation member (230) can be placed in an insertion groove (225) formed in a plurality of support members (220) and can absorb vibration of the compressor (100).

[0144] In an embodiment of the present invention, the vibration isolation member (230) may have a cylindrical shape with a central portion that is perforated and may be a rubber bush made of rubber. However, the present invention is not limited thereto and may be composed of other elastic materials.

[0145] The above vibration isolation member (230) may include a first vibration isolation member (231) and a second vibration isolation member (233). The first vibration isolation member (231) may be placed on the first support member (221), and the second vibration isolation member (233) may be placed on the second support member (223).

[0146] The above fastening member (240) can be positioned to penetrate the vibration insulating member (230) and can connect the fastening portion (115) and the support portion (220).

[0147]

[0148] In an embodiment of the present invention, the elastic coefficients of a plurality of vibration isolation members (230) arranged on a plurality of support members (220) may be configured differently depending on the distance from the center of gravity point (W) of the compressor (100).

[0149] Referring to Fig. 10, when yawing vibration (arrow Y) occurs in the longitudinal direction (X) of the compressor (100), the vibration isolation member (230) absorbs the yawing vibration (V) in the up-and-down direction (P) to alleviate the vibration of the compressor (100), thereby preventing damage from occurring due to malfunction or excessive vibration.

[0150] In general, the closer the vibration isolation member (230) is positioned to the center of gravity (W) of the compressor (100), the greater the vibration applied.

[0151] For example, a greater vibration is applied to a first vibration isolation member (231) positioned on a first support member (221) located close to the center of gravity point (W) of the compressor (100) than to a second vibration isolation member (233) positioned on a second support member (223) located far from the center of gravity point (W) of the compressor (100).

[0152] That is, a relatively larger yawing vibration is applied to the first vibration isolation member (231) arranged on the first support member (221), and a relatively smaller yawing vibration is applied to the second vibration isolation member (233) arranged on the second support member (223).

[0153]

[0154] Therefore, in the second embodiment of the present invention, as described in the first embodiment of the present invention, the elastic modulus of the vibration isolation member (230) disposed on the support member (220) relatively close to the center of gravity point (W) of the compressor (100) can be formed to be greater than the elastic modulus of the vibration isolation member (230) disposed on the support member (220) relatively far from the center of gravity point (W) of the compressor (100).

[0155] That is, the elastic coefficient of the first vibration isolation member (231) disposed on the first support member (221) close to the center of gravity point (W) of the compressor (100) can be formed to be greater than the elastic coefficient of the second vibration isolation member (233) disposed on the second support member (223) far from the center of gravity point (W) of the compressor (100).

[0156] In this case, since the elastic coefficient of the first vibration isolation member (231) located closer to the center of gravity point (W) of the compressor (100) is greater, the yawing vibration applied relatively greatly to the first vibration isolation member (231) can be effectively absorbed and alleviated.

[0157]

[0158] Meanwhile, referring to FIG. 11, in the third embodiment of the present invention, the fastening portion (115), the support portion (220), and the vibration isolation member (230) can be arranged to be inclined at a predetermined angle (θ) with respect to the vertical direction (Z) of the compressor (100).

[0159] Specifically, the plurality of fastening portions (115) may be arranged at angles opposite to each other at positions corresponding to each other on both sides of the compressor (100) based on the width direction (Y) of the compressor (100). In addition, the plurality of support portions (220) may be arranged at angles opposite to each other at positions corresponding to the plurality of fastening portions (115) based on the width direction (Y) of the bracket assembly (200).

[0160] According to this arrangement structure, the vibration isolation member (230) can convert the yawing vibration generated in the compressor (100) into an inclined direction formed at a predetermined angle (θ), thereby alleviating the yawing vibration from being concentrated in the up-down direction (Z) of the compressor (100) and increasing the amplitude of vibration in the up-down direction.

[0161]

[0162]

[0163] Meanwhile, in the embodiments of the present invention disclosed in FIGS. 3 to 6 and 7 to 10, the elastic coefficient of a plurality of vibration isolation members (230) can be configured to be inversely proportional to the distance between the center of gravity point (W) of the compressor (100) and the support member (220).

[0164] When yawing vibration (V) occurs, the relationship related to the vibration moment (M) applied to the support (220) based on the center of gravity (W) may be as follows.

[0165] First relationship: Vibration moment (M) = distance (D) × force (F)

[0166] If the vibration moment (M) applied to the first vibration isolation member (231) and the vibration moment (M) applied to the second vibration isolation member (233) are the same, the force (F1) applied to the first power isolation member located at a first distance (D1) from the center of gravity point (W) becomes greater than the force (F2) applied to the second vibration isolation member (233) located at a second distance (D2) from the center of gravity point (W).

[0167] Here, the first distance (D1) is the distance from the center of gravity (W) to the center of the first vibration isolation member (231). And the second distance (D2) is the distance from the center of gravity (W) to the center of the second vibration isolation member (233).

[0168] Here, the relationship for the elastic coefficient of the vibration insulation member (230) is as follows.

[0169] Second relationship: Force (F) = Elastic modulus (K) × Displacement (H)

[0170] In order to alleviate the yawing vibration (V) of the compressor (100), if the displacement amounts (H1, H2) of the first and second vibration insulating members (231, 233) are relatively the same, the yawing vibration (V) can be alleviated.

[0171] As described above, since the force (F1) applied to the first vibration isolation member (231) is greater than the force (F2) applied to the second vibration isolation member (233), if the elastic moduli (K1, K2) are the same, the displacement amount (H1) of the first vibration isolation member (231) is greater than the displacement amount (H2) of the second vibration isolation member (233), so the yawing vibration (V) cannot be effectively alleviated.

[0172] Therefore, in order to effectively alleviate the yawing vibration (V), the elastic coefficient (K1) of the first vibration isolation member (231) may be set to be greater than the elastic coefficient (K2) of the second vibration isolation member (233), so that the displacement amount (H1) of the first vibration isolation member (231) and the displacement amount (H2) of the second vibration isolation member (233) are relatively equal.

[0173] Combining the first and second relations, the following relation is derived.

[0174] Vibration moment (M) = distance (D) × elastic modulus (K) × displacement (H)

[0175] Here, the vibration moment (M) and displacement (H) are set to the same value, so

[0176] Elastic modulus (K) = 1 / distance (D)

[0177] That is, the elastic modulus (K) and distance (D) are inversely proportional.

[0178] If D2 = 2 × D1, then the relationship K1 = 2 × K2 is established. Or, if D2 = 3 × D1, then the relationship K1 = 3 × K2 is established.

[0179] That is, as described above, by setting the elastic coefficient value of the vibration insulation member (230) according to the distance value, optimal performance can be achieved to alleviate yawing vibration (V).

[0180] Setting the elastic modulus value in this way can mitigate the relatively faster deterioration of the durability of the first vibration isolation member (231) close to the center of gravity point (W) of the compressor (100) compared to the durability of the second vibration isolation member (233) far from the center of gravity point (W) of the compressor (100). This can be expected to have the effect of equalizing or improving the service life among a plurality of vibration isolation members (230).

[0181] In an embodiment of the present invention, when the vibration isolation member (230) is made of rubber material, the elastic coefficient of the vibration isolation member (230) can be determined by setting at least one of the hardness of the rubber material, the component of the rubber material itself, or the thickness of the rubber material different between the first and second vibration isolation members (231, 233).

[0182]

[0183] Meanwhile, when the actual vibration isolation member (230) is installed in a vehicle, the tension of the refrigerant hose pipe connected to the compressor (100) may affect the force (F) applied to the vibration isolation member (230), so when D2 ≥ 2 × D1, it may be effective to set K1 ≥ 2 × K2. That is, when D2 > D1, optimization may be possible with K1 > K2.

[0184]

[0185] As described above, the present invention effectively absorbs and mitigates vibrations generated in a compressor by applying vibration-isolating members with different elastic coefficients, taking into account the distance between the center of gravity of the compressor and the support portion of the bracket assembly. This can prevent performance degradation or damage to the compressor due to vibration, and improve vehicle mountability. In addition, the durability of the vibration-isolating member closer to the center of gravity of the compressor can be prevented from being relatively further weakened, thereby uniformizing or improving the service life.

[0186] The above merely illustrates a specific embodiment of the installation structure of the compressor and the bracket assembly supporting the compressor.

[0187] Accordingly, it is to be made clear that a person having ordinary skill in the art can easily understand that the present invention can be substituted and modified in various forms without departing from the spirit of the present invention described in the claims below.

[0188] These embodiments can be applied and used to minimize vibrations generated during compressor operation.

Claims

1. A plurality of fasteners arranged along the longitudinal direction (X) of the compressor; A plurality of support members arranged at positions corresponding to the plurality of fastening members on the bracket assembly supporting the compressor; A fastening member connecting the above fastening portion and the support portion; and A plurality of vibration insulating members are respectively arranged between the plurality of fastening members and the plurality of support members, and absorb vibration of the compressor; An installation structure of a compressor, characterized in that the elastic coefficients of the plurality of vibration insulating members are different depending on the distance from the center of gravity (W) of the compressor.

2. In paragraph 1, An installation structure of a compressor, characterized in that the elasticity coefficient of a vibration isolation member arranged on a support portion relatively close to the center of gravity point (W) of the compressor is formed to be greater than the elasticity coefficient of a vibration isolation member arranged on a support portion relatively far from the center of gravity point (W) of the compressor.

3. In paragraph 2, An installation structure of a compressor, characterized in that the center of gravity point (W) of the compressor is located between the plurality of support parts based on the longitudinal direction (X) of the bracket assembly.

4. In paragraph 3 The above plurality of fastening parts are arranged at positions symmetrical to each other based on the width direction (Y) of the compressor, An installation structure of a compressor, characterized in that the plurality of support members are arranged at positions symmetrical to each other based on the width direction (Y) of the bracket assembly.

5. In paragraph 4, An installation structure of a compressor, characterized in that the above-mentioned fastening member, the above-mentioned support member, and the above-mentioned vibration isolation member are arranged to be inclined at a predetermined angle (θ) with respect to the vertical direction (Z) of the compressor.

6. In paragraph 4, The above plurality of fastening parts are arranged at opposite angles at corresponding positions on both sides of the compressor based on the width direction (Y) of the compressor, An installation structure of a compressor, characterized in that the plurality of support parts are arranged at an angle opposite to each other at positions corresponding to the plurality of fastening parts based on the width direction (Y) of the bracket assembly.

7. In paragraph 2, Some of the above plurality of fastening parts are arranged on both sides of the compressor based on the width direction (Y) of the compressor, Among the plurality of fastening parts, some of the fastening parts other than some of the fastening parts are arranged on the front side of the compressor based on the longitudinal direction (X) of the compressor, Some of the above multiple supports are arranged on both sides of the bracket assembly based on the width direction (Y) of the bracket assembly, An installation structure of a compressor, characterized in that, among the plurality of support parts, other support parts, excluding some of the support parts, are arranged at positions corresponding to the other fastening parts on the front side of the compressor based on the longitudinal direction (X) of the bracket assembly.

8. In paragraph 7, An installation structure of a compressor, characterized in that the other part of the fastening portion and the other part of the support portion are arranged on a first extension line (W1) of the center of gravity (W) of the compressor.

9. In paragraph 1, An installation structure of a compressor, characterized in that the above plurality of fastening parts are formed at the same position based on the vertical direction (Z).

10. In paragraph 1, The above vibration insulation material is made of rubber, An installation structure of a compressor, characterized in that the elastic coefficient of the vibration insulation member is determined by setting at least one of the hardness, composition, or thickness of the rubber material.

11. In a compressor in which a plurality of fastening parts are arranged along the longitudinal direction (X), A support frame including an upper body having a plurality of support parts arranged at positions corresponding to the plurality of fastening parts and a lower body connected to the lower portion of the upper body and fixing the upper body to a vehicle; A plurality of vibration insulating members arranged in insertion grooves formed in the plurality of support members and absorbing vibration of the compressor; and A fastening member is disposed to penetrate the vibration insulating member and connect the fastening part and the support part; A bracket assembly characterized in that the elastic coefficients of the plurality of vibration insulating members are different depending on the distance from the center of gravity (W) of the compressor.

12. In paragraph 11, A bracket assembly, characterized in that the elastic coefficient of the plurality of vibration insulating members is inversely proportional to the distance between the center of gravity (W) of the compressor and the support.

13. In paragraph 12, A bracket assembly characterized in that the center of gravity (W) of the compressor is located between the plurality of support members.

14. In paragraph 12, The above multiple fastening parts are arranged at positions symmetrical to each other based on the width direction (Y) of the compressor, A bracket assembly characterized in that the plurality of support members are arranged at positions symmetrical to each other with respect to the width direction (Y) of the upper body.

15. In paragraph 12, Some of the above plurality of fastening parts are arranged on both sides of the compressor based on the width direction (Y) of the compressor, Among the plurality of fastening parts, some of the fastening parts other than some of the fastening parts are arranged on the front side of the compressor based on the longitudinal direction (X) of the compressor, Some of the above multiple supports are arranged on both sides of the upper body based on the width direction (Y) of the upper body, A bracket assembly characterized in that, among the plurality of support parts, other support parts, excluding some of the support parts, are arranged at positions corresponding to the other part of the fastening parts on the front side of the compressor based on the longitudinal direction (X) of the upper body.

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