Electric compressor

Abstract

An electric compressor according to one embodiment of the present invention comprises: a housing; a compression unit for compressing a refrigerant; a motor unit which is provided in the housing and drives the compression unit; an inverter unit disposed on one side of the housing; a printed circuit board disposed in an open side portion of the housing; and a connector module which includes an inverter cover coupled to the housing to cover the printed circuit board, and is coupled to the housing in a state in which a high voltage connector unit and a low voltage connector unit are installed.

Description

electric compressor

[0001] The present invention relates to an electric compressor in which a high-voltage connector section and a low-voltage connector section are integrated by a connector module.

[0002] Generally, a compressor is a device that compresses fluids such as refrigerant gas, and is applied in building air conditioning systems, vehicle air conditioning systems, and the like.

[0003] The above compressors are classified according to the compression method into reciprocating compressors, which compress the refrigerant through the reciprocating motion of a piston, and rotary compressors, which perform compression through rotational motion.

[0004] The above-mentioned reciprocating compressors are classified according to the power transmission method into crank-type compressors that transmit power to multiple pistons using a crank, swashplate-type compressors that transmit power to a rotating shaft equipped with a swashplate, and the above-mentioned rotary compressors can be classified into vane rotary compressors that use a rotating rotary shaft and vanes, and scroll compressors that use a slewing scroll and a fixed scroll.

[0005] In addition, the above compressor may be classified into a mechanical compressor using an engine and an electric compressor using a motor (hereinafter referred to as an electric compressor) depending on the driving method.

[0006] Here, an inverter that controls the motor is applied to the electric compressor to regulate the compression capacity.

[0007] FIG. 1 is a cross-sectional view illustrating a conventional electric compressor, FIG. 2 is an exploded perspective view illustrating the inverter side of the electric compressor of FIG. 1, and FIG. 3 is a right side view illustrating the connectors of the electric compressor of FIG. 1.

[0008] Referring to FIGS. 1 to 3, a conventional electric compressor includes a housing (10a), a compression mechanism (20) that compresses a refrigerant inside the housing (10a), a motor (30) that generates power required to drive the compression mechanism (20), and an inverter (40) that controls the motor (30).

[0009] The housing (10a) includes an integrated motor-inverter body (12a) having a motor receiving space for accommodating the motor (30) and an inverter receiving space for accommodating the inverter (40). The inverter (40) includes a printed circuit board (41) and a connector (43, 44) (see FIG. 3) for connecting the printed circuit board (41) to an external device, and the connector (43, 44) is secured by a fastening member (72, 74) (see FIG. 3) that passes through the connector (43, 44) and is fastened to the integrated motor-inverter body (12).

[0010] Here, the connectors (43, 44) include a high-voltage connector (43) connected to a high-voltage power supply unit to supply power to the inverter (40) and a low-voltage connector (44) connected to a low-voltage power supply unit to communicate with the inverter (40).

[0011] As the high-voltage connector (43) is fixed by the fastening member (72) and the low-voltage connector (44) is fixed by the fastening member (74), the assembly work and the number of parts increase, causing problems and increasing the manufacturing cost.

[0012] In addition, the low-voltage connector (44) is not equipped with a separate electromagnetic shielding filter, which causes a problem in that the design of the printed circuit board (41) becomes complicated.

[0013] And, the housing (10a) further includes an inverter cover (15) that covers the inverter receiving space, and the inverter cover (15) is fixed by a fastening member (50) that penetrates the inverter cover (15) and is fastened to the integrated motor-inverter body (12a), and the printed circuit board (41) is fixed by a fastening member (80) that penetrates the printed circuit board (41) and is fastened to the integrated motor-inverter body (12).

[0014] In this case, the conventional electric compressor caused problems such as increased cost and increased time required to assemble the inverter (40), and reduced assembly efficiency.

[0015] Embodiments of the present invention aim to provide an electric compressor that can be installed in an inverter body in a single step by integrally molding a high-voltage connector part and a low-voltage connector part into a single connector module using an injection molding method.

[0016] An electric compressor according to one embodiment of the present invention comprises: a housing; a compression unit for compressing a refrigerant; a motor unit provided within the housing for driving the compression unit; an inverter unit disposed on one side of the housing; a printed circuit board disposed within an open side of the housing; and an inverter cover coupled to the housing to cover the printed circuit board, and a connector module coupled to the housing with a high-voltage connector unit and a low-voltage connector unit installed therein.

[0017] The connector module comprises: a first insertion portion opened on one side of a connector plate formed of a predetermined size for inserting the low-voltage connector portion; and a second insertion portion opened for inserting the high-voltage connector portion at a position spaced apart from the first insertion portion by a predetermined distance in the horizontal direction.

[0018] The connector module is formed on both the left and right sides of the connector plate and further includes a fastening portion for installing the connector module on the inverter body.

[0019] A bent portion is formed on at least a part of the outer perimeter of the connector plate, which is bent and extended relative to the connector plate.

[0020] The above connector module is integrally injection molded with the high-voltage connector part and the low-voltage connector part.

[0021] The high-voltage connector portion includes a high-voltage terminal provided to transmit high-voltage power to the printed circuit board; and a high-voltage housing that surrounds the outer side of the high-voltage terminal and forms the outer shape.

[0022] The high-voltage connector portion is positioned to surround the high-voltage terminal and further includes a high-voltage shield portion electrically connected to the connector plate.

[0023] The high-voltage connector portion further includes a high-voltage sealing member that is in close contact with the outer side of the high-voltage housing and simultaneously holds with a predetermined tension from the outer surface of the high-voltage housing toward the inner surface to prevent detachment.

[0024] The high-voltage shield portion further includes an extension portion extending toward the outer front of the connector plate for electrical grounding with the connector plate prior to the injection molding of the high-voltage housing.

[0025] A shield groove is formed in the connector plate into which the extension is inserted.

[0026] When the above extension is inserted into the shield groove, it is maintained in a state protruding toward the outside of the connector plate with a predetermined thickness.

[0027] The above low-voltage connector part includes a low-voltage terminal provided to transmit a low-voltage power supply and a communication signal to the printed circuit board; and a low-voltage housing coupled to the low-voltage terminal and forming an external shape.

[0028] The above low-voltage connector portion further includes a noise reduction member provided to prevent electromagnetic interference, which surrounds the outer side of the low-voltage housing.

[0029] The above low-voltage connector part includes a low-voltage sealing member that is in close contact with the outer side of the noise reduction member and simultaneously holds the noise reduction member from the outer side toward the inner side with a predetermined tension to prevent detachment.

[0030] The above noise reduction member uses a ferrite magnet.

[0031] The above noise reduction member is formed in a cylindrical shape that surrounds the outer side of the low-voltage housing.

[0032] The low-voltage sealing member comprises: a first sealing portion in close contact with one surface of the low-voltage housing; a second sealing portion extending along the longitudinal direction of the noise reduction member from the first sealing portion; and a third sealing portion bent radially inward from the extended end of the second sealing portion, wrapping the extended end of the noise reduction member and extending toward the low-voltage housing.

[0033] The above noise reduction member is integrally injection-molded together with the above low-voltage housing when the housing is injection-molded.

[0034] Embodiments of the present invention allow for the integrated installation of a high-voltage connector section and a low-voltage connector section in a single connector module, thereby simultaneously improving the workability and work efficiency of a worker assembling an electric compressor.

[0035] The embodiments of the present invention improve the electrical grounding stability of the high-voltage connector section and prevent problems caused by electromagnetic waves in the low-voltage connector section, thereby enabling stable operation of the electric compressor.

[0036] Embodiments of the present invention can ensure stable sealing of the high-voltage connector part and the low-voltage connector part.

[0037] Embodiments of the present invention can enable various modified designs by improving the design freedom for the high-voltage connector part and the low-voltage connector part.

[0038] FIG. 1 is a cross-sectional view illustrating a conventional electric compressor,

[0039] FIG. 2 is an exploded perspective view showing the inverter side of the electric compressor of FIG. 1.

[0040] FIG. 3 is a right side view illustrating the connectors of the electric compressor of FIG. 1.

[0041] FIG. 4 is a perspective view showing the state in which a high-voltage connector part and a low-voltage connector part are installed in a connector module according to the present embodiment.

[0042] Fig. 5 is a rear perspective view of Fig. 4.

[0043] FIG. 6 is a perspective view illustrating a connector module according to the present embodiment.

[0044] FIG. 7 is a drawing showing a connector module with a shield groove formed according to the present embodiment.

[0045] FIG. 8 is a perspective view showing the state in which an extension formed in the high-voltage connector portion of the connector module according to the present embodiment is seated in the shield groove portion.

[0046] FIG. 9 is a drawing illustrating the state in which a high-voltage connector part is installed in a connector module according to the present embodiment.

[0047] FIG. 10 is a perspective view showing a state in which a low-voltage housing is formed in a connector module according to the present embodiment.

[0048] FIG. 11 is a perspective view illustrating the state in which a noise reduction member and a low-voltage sealing member are installed in a low-voltage connector part according to the present embodiment.

[0049] FIGS. 12 and 13 are drawings illustrating a noise reduction member and a low-voltage housing according to another embodiment of the present invention.

[0050] The advantages and features of the present disclosure and the methods for achieving them will become clear by referring to the embodiments described below in detail together with the accompanying drawings. However, the present disclosure is not limited to the embodiments disclosed below but may be implemented in various different forms. These embodiments are provided merely to ensure that the disclosure of the present disclosure is complete and to fully inform those skilled in the art of the scope of the disclosure, and the present disclosure is defined only by the scope of the claims. Throughout the specification, like reference numerals refer to like components.

[0051] When one component is referred to as being "connected to" or "coupled to" another component, it includes cases where it is directly connected or coupled to the other component, or cases where another component is interposed. Conversely, when one component is referred to as being "directly connected to" or "directly coupled to" another component, it indicates that no other component is interposed. "And / or" includes each of the mentioned items and all combinations of one or more of them.

[0052] The terms used herein are for describing embodiments and are not intended to limit the disclosure. In this specification, the singular form includes the plural form unless specifically stated otherwise in the text. As used herein, "comprises" and / or "comprising" do not exclude the presence or addition of one or more other components, steps, actions, and / or elements to the mentioned components, steps, actions, and / or elements.

[0053] Although terms such as "first," "second," etc., are used to describe various components, it goes without saying that these components are not limited by these terms. These terms are used merely to distinguish one component from another.

[0054]

[0055] An electric compressor according to one embodiment of the present invention will be described with reference to the drawings. The attached FIG. 4 is a perspective view showing a state in which a high-voltage connector part and a low-voltage connector part are installed in a connector module according to the present embodiment; FIG. 5 is a rear perspective view of FIG. 4; FIG. 6 is a perspective view showing a connector module according to the present embodiment; FIG. 7 is a drawing showing a connector module with a shield groove part formed according to the present embodiment; FIG. 8 is a perspective view showing a state in which an extension part formed in the high-voltage connector part of the connector module according to the present embodiment is seated in the shield groove part; and FIG. 9 is a drawing showing a state in which a high-voltage connector part is installed in a connector module according to the present embodiment.

[0056]

[0057] Referring to the attached FIGS. 4 to 9, the electric compressor according to the present embodiment comprises a housing (not shown) formed to a predetermined size, a compression unit (not shown) for compressing a refrigerant, a motor unit (not shown) provided within the housing (not shown) for driving the compression unit (not shown), an inverter unit (not shown) disposed on one side of the housing (not shown), a printed circuit board (not shown) disposed within an open side of the housing, and an inverter cover coupled to the housing to cover the printed circuit board, and a connector module (200) coupled to the housing with a high-voltage connector unit (300) and a low-voltage connector unit (400) installed therein.

[0058]

[0059] In particular, in this embodiment, when the high-voltage connector part (300) and the low-voltage connector part (400) are installed on the inverter body, they are not installed with separate brackets, but are injection molded together as a single unit in the connector module (200) to be described later, after which they are coupled to the housing. This improves the workability of the operator, reduces the number of assembly steps, and simultaneously improves grounding performance.

[0060]

[0061] The above inverter unit is provided to control the above motor unit, and the housing forms the overall exterior of the electric compressor, and in this embodiment, it consists of a center housing, a motor housing, and a rear housing.

[0062] The motor unit is provided within a motor housing, and the compressor unit provides power for compressing the refrigerant. The motor unit includes a rotor coupled to a rotating shaft rotatably installed at the center of the motor housing, and a stator fixed to the motor housing and positioned radially outward from the rotor. The stator includes a stator core and a coil wound on the stator core.

[0063] The above compression unit is provided inside the rear housing and includes a pivot scroll coupled to the rotation shaft through an eccentric bushing, and a fixed scroll fixed between the center housing and the rear housing to form a compression chamber in which the refrigerant is compressed together with the pivot scroll.

[0064] In this way, the above-mentioned compression unit is connected to the motor unit through a rotating shaft, so that the rotational force generated by the motor unit can be transmitted to the rotating scroll of the compression unit by the rotating shaft.

[0065] The inverter unit is provided on the outer side of the housing and is coupled to the opposite side of the compression unit relative to the motor unit. The inverter unit is electrically connected to the motor unit and applies power to the motor unit and controls its operation through power and control signals transmitted from the outside.

[0066] More specifically, the stator forms an electromagnetic field by power applied from the inverter section, and as the rotor rotates by the electromagnetic field formed by the stator, a rotational force is generated to drive the compression section.

[0067] The above inverter unit includes a printed circuit board equipped with switching elements and an inverter cover coupled to a housing to accommodate the printed circuit board.

[0068] The above inverter unit is coupled to one side of the motor housing, and the aforementioned inverter body and inverter cover are sequentially coupled with respect to the motor housing.

[0069] The above inverter unit is electrically connected to the motor unit and applies power to the motor unit and controls its operation through power and control signals transmitted from the outside.

[0070] More specifically, the stator forms an electromagnetic field by power applied from the inverter unit, and as the rotor rotates by the electromagnetic field formed by the stator, a rotational force is generated to drive the compression unit.

[0071] The motor unit and the inverter unit may be electrically connected by a terminal unit. In this embodiment, since a 3-phase motor is used, three connection pins and three terminals (not shown) connected to each of the three phases may be provided on the printed circuit board to supply 3-phase power from the inverter unit to the motor unit.

[0072] The three connecting pins are each connected to the three-phase coils of the stator and protrude through the motor housing to the inside of the inverter section. Each connecting pin protruding into the inside of the inverter section penetrates the printed circuit board of the inverter section and is electrically connected to the printed circuit board through its respective terminal.

[0073]

[0074] The inverter section according to the present embodiment may include an inverter body, an inverter cover, a printed circuit board, a CM choke (not shown in the drawing), a high-voltage connector section (300), a low-voltage connector section (400), and an electromagnetic shielding member (not shown).

[0075] The inverter body is positioned on one side of the motor housing, and a printed circuit board to which switching elements are connected is seated on the inside of the inverter body.

[0076] The above inverter unit includes an inverter cover coupled facing the inverter body, and a sealing member (not shown) integrally formed on one side and the other side of the inverter body.

[0077] The above inverter body has a connector module (200) located on the rear side, and a high-voltage connector part (300) and a low-voltage connector part (400) are integrally formed on the connector module (200) by an injection molding method.

[0078] The above high-voltage connector part (300) is provided to serve the function of supplying power so that the electric compressor can operate, for example, by connecting to the high-voltage battery of a vehicle.

[0079] And the above low-voltage connector part (400) is connected to the low-voltage battery on the vehicle side to enable communication between the vehicle side and the electric compressor, and is provided to transmit and receive interlock signals to and from the electric compressor side.

[0080]

[0081] The above inverter body is molded from plastic material to reduce weight, but it can be manufactured from other materials capable of lightweighting, and can be changed in various ways without being specifically limited to a particular material.

[0082] Since a printed circuit board is mounted on the inner side of the inverter body, a sealing member (not shown) is formed along the edge of one side for stable sealing, thereby blocking the ingress of moisture and foreign substances.

[0083]

[0084] In the connector module (200) according to the present embodiment, a connector plate (202) is formed with a predetermined size, and a high-voltage connector part (300) and a low-voltage connector part (400), which will be described later, are integrally injection-molded on the connector plate (202). When installed on an inverter body, the high-voltage connector part (300) and the low-voltage connector part (400) can be integrated and installed in a state where they are integrated with the connector module (200).

[0085] The connector plate (202) is formed with a predetermined thickness and has horizontal and vertical directions formed with lengths and ratios as shown in the drawing, and is made of a metal material for grounding. The connector plate (202) is not limited to specific lengths for horizontal and vertical lengths and can be varied.

[0086] In particular, since the high-voltage connector part (300) and the low-voltage connector part (400) are integrated and installed in one connector module (200), the configuration is simplified and the convenience of electrical connection and installation is simultaneously improved.

[0087]

[0088] The connector plate (202) includes a first insertion part (210) that is opened on one side (left side according to the drawing) to insert a low-voltage connector part (400), a second insertion part (220) that is opened at a position spaced apart from the first insertion part (210) by a predetermined distance in the horizontal direction to insert a high-voltage connector part (300), and fastening parts (230) formed on both the left and right sides of the connector plate (202) for installing the connector module (200) on the inverter body.

[0089] The first insertion part (210) is formed in the same shape as the cross-sectional shape of the low-voltage connector part (400), and is formed as a cylindrical hole, for example. The second insertion part (220) is formed in the same shape as the cross-sectional shape of the high-voltage connector part (300), and is formed as a square hole, for example. For reference, the first insertion part (210) and the second insertion part (220) are not limited to the shapes described above and can be changed in various ways.

[0090] The above fastening portion (230) is formed on both the left and right sides of the connector plate (202) so that the connector plate (202) is fixed to the inverter body. The above fastening portion (230) is formed as a hole to be coupled with an unillustrated fixing member, and the fixing member may be, for example, a screw.

[0091]

[0092] The connector plate (202) has a bent portion (202a) formed on at least a portion of its outer perimeter that is bent and extended relative to the connector plate (202). The bent portion (202a) is formed, for example, on either the upper or lower side, or on both sides, to reinforce rigidity.

[0093] The above-mentioned bending portion (202a) is configured in a shape that prevents interference when the high-voltage connector portion (300) and the low-voltage connector portion (400) are injection molded together, and is not limited to the shape shown in the drawing but can be changed in various ways.

[0094] The above-mentioned bending portion (202a) may be formed extending along the length direction of the upper or lower side of the connector plate (202), for example, and may be formed in a rounded shape facing forward or backward from the upper or lower side of the connector plate (202) and bent at a predetermined angle, but may be varied in other shapes.

[0095] In this embodiment, the high-voltage connector part (300) and the low-voltage connector part (400) are injection-molded together on the aforementioned connector plate (202), making manufacturing convenient and allowing a worker to install them on the inverter body in one go, thereby improving workability.

[0096]

[0097] The high-voltage connector portion (300) according to the present embodiment further includes a high-voltage terminal (310) provided to transmit high-voltage power to the printed circuit board, and a high-voltage shield portion (320) arranged to surround the high-voltage terminal (310) and electrically connected to the connector plate (202). The high-voltage shield portion (320) is provided to reduce electromagnetic waves radiated from the high-voltage terminal (310) and to minimize the impact of electromagnetic waves on peripheral devices or systems.

[0098] When electromagnetic waves are emitted from the high-voltage terminal (310), the electromagnetic waves are absorbed by the high-voltage shield (320) surrounding the high-voltage terminal (310).

[0099] The above high-voltage shield portion (320) is electrically grounded to the connector plate (202), and the connector plate (202) is connected to the housing (motor housing), and the housing is grounded to the vehicle body through a separate grounding means (ground wire or mounting bolt, etc.), thereby improving electrical grounding stability.

[0100]

[0101] The high-voltage connector part (300) includes a high-voltage housing (330) that surrounds the outer side of the high-voltage shield part (320) and forms an outer shape, and a high-voltage sealing member (340) that is in close contact with the outer side of the high-voltage housing (330) and holds the outer side of the high-voltage housing (330) toward the inner side with a predetermined tension to prevent detachment. In addition, the high-voltage shield part (320) is coupled to and fixed to the high-voltage housing (330).

[0102] In particular, the high-voltage shield portion (320) further includes an extension portion (322) that extends toward the outer front of the connector plate (202) before the high-voltage housing (330) is injection molded.

[0103]

[0104] The extension part (322) is vertically bent toward the outer front surface of the connector plate (202) from the high-voltage shield part (320) and maintained in a surface contact state. When the extension part (322) is maintained in a surface contact state with the connector plate (202), an electrical ground state is maintained with the inverter part combined with the inverter cover.

[0105] The above inverter unit is assembled in an integrated state with the electric compressor, and since the electric compressor is installed on the vehicle chassis, the high-voltage connector unit (300) maintains an electrical connection state through the connector module (200), and the grounding performance can be stably maintained through the chassis of the vehicle in which the electric compressor is installed.

[0106]

[0107] In this embodiment, a shield groove (202b) into which the extension (322) is inserted is formed in the connector plate (202). The shield groove (202b) is formed with a predetermined size and depth to maintain a stable grounding state through surface contact between the extension (322) and the connector plate (202).

[0108] When the extension part (322) is inserted into the shield groove part (202b), the contact area between the connector plate (202) and the extension part (322) is increased, thereby improving electrical grounding performance and contact stability.

[0109] For example, when the extension portion (322) is inserted into the shield groove portion (202b), it may remain in a state where it does not protrude outward from the connector plate (202). That is, the length corresponding to the depth of the shield groove portion (202b) may be configured to be equal to or longer than the length corresponding to the thickness of the extension portion (322).

[0110] When configured in this way, the extension part (322) is not separated from the shield groove part (202b) and is stably maintained in a state of precise face-to-face contact, so that the stability due to contact is always maintained at a constant level and the grounding performance can also be maintained at a constant level.

[0111]

[0112] In another embodiment, the extension portion (322) can be inserted into the shield groove portion (202b) in a state where it protrudes toward the outside of the connector plate (202) with a predetermined thickness.

[0113] It is preferable that the extension part (322) does not protrude outward from the shield groove part (202b) and has the same height, and even if it protrudes, it does not exceed 0.5mm so that a large gap does not occur or interference occurs when assembling the connector plate (202) to the housing, thereby enabling stable assembly.

[0114] In this way, when the extension part (322) protrudes within the aforementioned dimensions from the shield groove part (202b), the extension part (322) can be maintained in a state of constant surface contact without any gap occurring in the inner region of the shield groove part (202b), thereby stably maintaining grounding performance.

[0115]

[0116] The high-voltage sealing member (340) according to the present embodiment serves to prevent leakage when the connector plate (202) is installed on the inverter body.

[0117] The above high-voltage sealing member (340) may be made of elastic rubber, for example, but it may also be changed to a material similar to rubber or a different configuration that implements the function.

[0118]

[0119] Referring to the attached FIGS. 4 to 5 and FIGS. 10 to 11, the low-voltage connector portion (400) according to the present embodiment includes a low-voltage terminal (410) provided to transmit a low-voltage power supply and a communication signal to a printed circuit board, a low-voltage housing (430) coupled to the low-voltage terminal (410) and forming an outer shape, a noise reduction member (420) provided to surround the outer side of the low-voltage housing (430) and prevent electromagnetic interference, and a low-voltage sealing member (440) that is in close contact with the outer side of the noise reduction member (420) and simultaneously holds the noise reduction member (420) from the outer side toward the inner side with a predetermined tension to prevent detachment.

[0120] In the noise reduction member (420) according to the present embodiment, a ferrite magnet is used as an example to minimize electromagnetic interference, but it may be changed to a different configuration.

[0121] The above noise reduction member (420) has the function of reducing EMC, and thereby can increase the design freedom of the printed circuit board by eliminating EMC filter circuits or components that are separately formed on the conventional printed circuit board.

[0122]

[0123] Since the low-voltage housing (430) is configured in a cylindrical shape, the noise reduction member (420) is shown as a cylindrical shape that surrounds the outside of the low-voltage housing (430), but it can be changed to various other shapes.

[0124] The low-voltage connector part (400) is provided to transmit low-voltage power and communication signals to a printed circuit board, but when the low-voltage connector part (400) is used, electromagnetic waves are generated, which may cause unnecessary electromagnetic interference or disturbance to a printed circuit board in which a number of electronic components are installed.

[0125] In order to prevent this, the present embodiment is configured so that a ferrite magnet surrounds the outer side of the low-voltage housing (430), thereby preventing electromagnetic failure and malfunction.

[0126] The above ferrite magnet is not limited to the shape and thickness shown in the drawing and can be varied in many ways, and it may be composed of a single configuration or multiple ferrite magnets.

[0127]

[0128] The low-voltage sealing member (440) according to the present embodiment is coupled to one surface of the connector plate (202) in close contact by being inserted into the outside of the noise reduction member (420). The low-voltage sealing member (440) is composed of rubber or a similar material that generates a certain tension towards the radial inner side to prevent the noise reduction member (420) from detaching, thereby preventing the low-voltage sealing member (440) from detaching and maintaining a stable coupled state.

[0129]

[0130] Referring to the attached FIG. 12, the low-voltage sealing member (440) according to the present embodiment may be configured to prevent the noise reduction member (420) from detaching, unlike the previously described embodiment.

[0131] For example, the low-voltage sealing member (440) may be configured to include a first sealing portion (442) that is in close contact with one surface of the low-voltage housing (430), a second sealing portion (444) that extends along the longitudinal direction of the noise reduction member (420) from the first sealing portion (442), and a third sealing portion (446) that is bent radially inward from the extended end of the second sealing portion (444) to wrap the extended end of the noise reduction member (420) and extend toward the low-voltage housing (430).

[0132] Unlike the previously described embodiment, this embodiment is formed so that the low-voltage sealing member (440) wraps around the extended end of the noise reduction member (420) with a predetermined tension force, so that the noise reduction member (420) is not detached from the low-voltage sealing member (440) and remains in a stably installed state.

[0133] To this end, the first sealing portion (442) is maintained in a state of being in close contact with one surface of the connector plate (202) provided in the connector module (200). The second sealing portion (444) is formed integrally with the first sealing portion (442) and extends in a direction away from the connector plate (202) along the longitudinal direction of the noise reduction member (420), and is maintained in a state of being in close contact with a predetermined tension towards the radial inner side together with the first sealing portion (442).

[0134] In particular, in this embodiment, the third sealing part (446) is formed to wrap around the noise reduction member (420) after being bent toward the extended end of the noise reduction member (420) from the second sealing part (444), so that the state in which the noise reduction member (420) is positioned inside the low-voltage sealing member (440) is stably maintained.

[0135]

[0136] Referring to the attached FIG. 13, the noise reduction member (420) according to the present embodiment may be integrally injection molded together with the low-voltage housing (430) when the low-voltage housing (430) is injection molded. The noise reduction member (420) may be injection molded together with the low-voltage housing (430) in an integral injection molding manner when the low-voltage housing (430) is injection molded in order to more stably block electromagnetic waves and to facilitate installation.

[0137] That is, the noise reduction member (420) is inserted into the inner side of the low-voltage housing (430) and integrally injection molded, thereby increasing the fixing force for the noise reduction member (420).

[0138] In this case, the noise reduction member (420) cannot be detached from the low-voltage housing (430) and remains in a position inside the low-voltage housing (430) at all times, so the occurrence of problems caused by the electronic board can be minimized.

[0139] In addition, when the noise reduction member (420) is positioned as described above, the assembly force due to fixation can be improved.

[0140]

[0141] Although an embodiment of the present invention has been described above, those skilled in the art may modify and change the present invention in various ways by adding, changing, deleting, or adding components, etc., without departing from the spirit of the present invention as described in the claims, and such modifications and changes are also to be included within the scope of the rights of the present invention.

[0142] In these embodiments, the high-voltage connector and the low-voltage connector can be used by molding them together in an electric compressor using an integral injection molding method.

Claims

1. Housing; A compression section that compresses the refrigerant; A motor unit provided within the above housing and driving the compression unit; An inverter unit disposed on one side of the above housing; A printed circuit board disposed within an open side of the above housing; and It includes an inverter cover coupled to the housing to cover the printed circuit board, and An electric compressor comprising a connector module coupled to the housing with a high-voltage connector section and a low-voltage connector section installed.

2. In Paragraph 1, The above connector module comprises a first insertion part that is opened on one side of a connector plate formed to a predetermined size for inserting the low-voltage connector part; An electric compressor comprising a second insertion portion that is opened to allow the high-voltage connector portion to be inserted at a position spaced apart from the first insertion portion by a predetermined distance.

3. In Paragraph 2, The above connector module is an electric compressor further comprising a fastening portion for installing the above connector module on the inverter body.

4. In Paragraph 2, An electric compressor having a bent portion formed on at least a portion of the outer perimeter of the connector plate, which is bent and extended relative to the connector plate.

5. In Paragraph 1, The above connector module is an electric compressor in which the high-voltage connector part and the low-voltage connector part are integrally injection molded.

6. In Paragraph 1, The above high-voltage connector portion is a high-voltage terminal provided to transmit high-voltage power to the printed circuit board; An electric compressor comprising a high-voltage housing that surrounds the outer side of the above-mentioned high-voltage terminal and forms the outer shape.

7. In Paragraph 6, An electric compressor comprising a high-voltage connector portion arranged to surround the high-voltage terminal and further including a high-voltage shield portion electrically connected to a connector plate.

8. In Paragraph 6, An electric compressor further comprising a high-voltage sealing member that is in close contact with the outer side of the high-voltage housing and simultaneously holds the outer surface of the high-voltage housing toward the inner surface with a predetermined tension to prevent detachment.

9. In Paragraph 7, The above high-voltage shield portion further includes an extension portion extending toward the outer front of the connector plate for electrical grounding with the connector plate before the high-voltage housing is injection molded, in an electric compressor.

10. In Paragraph 9, An electric compressor having a shield groove formed in the connector plate into which the extension is inserted.

11. In Paragraph 1, The above low-voltage connector portion is a low-voltage terminal provided to transmit a low-voltage power supply and a communication signal to the printed circuit board; An electric compressor comprising a low-voltage housing that is coupled to the above-mentioned low-voltage terminal and forms the external shape.

12. In Paragraph 11, An electric compressor comprising a noise reduction member that surrounds the outer side of the low-voltage housing and is provided to prevent electromagnetic interference, wherein the low-voltage connector portion above surrounds the outer side of the low-voltage housing.

13. In Paragraph 12, An electric compressor comprising a low-voltage sealing member that is in close contact with the outer side of the noise reduction member and simultaneously holds the noise reduction member from the outer side toward the inner side with a predetermined tension to prevent detachment.

14. In Paragraph 12, The above noise reduction member is an electric compressor in which a ferrite magnet is used.

15. In Paragraph 12, The above noise reduction member is an electric compressor formed in a cylindrical shape that surrounds the outer side of the low-voltage housing.

16. In Paragraph 13, The above low-voltage sealing member comprises a first sealing portion in close contact with one surface of the low-voltage housing; A second sealing portion extending along the longitudinal direction of the noise reduction member from the first sealing portion; An electric compressor comprising a third sealing portion that is bent radially inward from the extended end of the second sealing portion, wraps around the extended end of the noise reduction member, and extends toward a low-voltage housing.

17. In Paragraph 12, The above noise reduction member is an electric compressor that is integrally injected together with the above low-voltage housing when the latter is injected.

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