Electric compressor for vehicles

Abstract

The present invention relates to a vehicle electric compressor, and provides a vehicle electric compressor structure that can improve the assembly of a product by improving the electrical connection structure between a sealing terminal connecting an inverter unit and an electric motor and a winding coil of the electric motor, and thereby reduce the production cost of the product. To this end, the vehicle electric compressor of the present invention is characterized by including: an electric motor provided with a stator, a rotor, and a rotating shaft; a compression part that compresses a refrigerant according to the rotation of the rotating shaft; an inverter unit that controls the driving of the electric motor; a sealing terminal that electrically connects between the electric motor and the inverter unit; and a busbar member that is formed in one body with the stator part and internally provided with a plurality of connection terminals for electrically connecting a coil wound around the stator and a plurality of connection pins provided to the sealing terminal.

Description

TECHNICAL FIELD

[0001] The present application relates to an electric compressor for a vehicle, and more particularly, to an electric compressor for a vehicle that improves the assembly of a product by improving the electrical connection structure between a sealing terminal connected between an inverter and an electric motor and a winding coil of the electric motor, and thereby reduces the production cost of the product. BACKGROUND

[0002] Generally, a compressor provided in an air conditioning device for a vehicle is a device that compresses and delivers a refrigerant, which is evaporated, to a condenser in a high-temperature and high-pressure state to be easily liquefied.

[0003] As described above, the compressor is classified into a reciprocating type that performs compression while performing reciprocating motion and a rotary type that performs compression while performing rotary motion according to a method of compressing a refrigerant, and the rotary type compressor includes a mechanical type that rotates using an engine as a driving source and an electric type that rotates using a motor as a driving source.

[0004] Here, the electric type compressor is a method of driving the compressor by an electric motor provided inside, and the electric motor adjusts a rotational speed thereof by an inverter provided in the electric type compressor.

[0005] As one example of the electric type compressor as described above, Japanese Laid-Open Patent Publication No. 2000-291557 discloses an electric compressor having a structure in which a compression mechanism portion, an electric motor, and an inverter are sequentially arranged in an axial direction. The inside of a housing of the electric compressor disclosed in the patent publication is divided into two spaces by a partition, and the electric motor is accommodated in one side space and the inverter is accommodated in the other side space. In addition, a sealing terminal (air-tight terminal) for electrically connecting the electric motor and the inverter is installed in the partition, thereby forming a structure in which the electric motor and the inverter are electrically connected through the sealing terminal.

[0006] The electric type compressor having the structure as described above applies the sealing terminal in order to electrically connect the electric motor and the inverter, and the reason for this is that a high pressure difference is generated between the space in which the electric motor is located and the space in which the inverter is located. Therefore, in an environment in which such a high pressure difference is generated, the air-tightness between the two spaces is maintained by the sealing terminal.

[0007] In addition, in the case of the sealed terminal described above, a male terminal in the shape of a pin is provided at the portion connected to the electric motor side, and a female terminal corresponding to the shape of the male terminal of the sealed terminal and a fixing mechanism in the shape of a terminal platform for fixing the female terminal are provided at the portion of the electric motor side connected to the sealed terminal. In this case, the female terminal provided at the electric motor side is soldered to one end of the lead wire by soldering, and the other end of the lead wire and the stripped winding coil of the electric motor are soldered by soldering, thereby forming a structure in which the sealed terminal and the electric motor are electrically connected.

[0008] However, the conventional electric compressor having the connection structure described above requires one of the following complicated and cumbersome operations in order to electrically connect the inverter and the electric motor through the sealed terminal: after stripping the end portion of the winding coil of the electric motor, the one end of the lead wire is soldered to the female terminal provided at the electric motor side by soldering, and the other end is soldered to the female terminal by soldering to connect, in addition, in view of the flow environment, vibration environment, etc. of the refrigerant and oil inside the electric compressor, in order to stably combine the winding coil of the electric motor and the lead wire, the lead wire and the female terminal, additional processes such as impregnation or lacing of the winding coil of the electric motor can be accompanied, and therefore, the problem is that a large number of operation man-hours and operation time are required when assembling the electric compressor, and therefore, the problem is that the productivity of the electric compressor product is reduced, and the production cost is increased.

[0009]

Prior Art Documents

[0010]

Patent Documents

[0011] (Patent Document 1) Japanese Patent Publication No. 2000-291557 (October 17, 2000) SUMMARY

[0012] The present application is proposed to solve the above problems, and provides a structure of an electric compressor for a vehicle in which the sealed terminal connecting between the inverter and the electric motor is configured to be directly connected to the winding coil of the electric motor through the connection terminal, thereby omitting and reducing processes such as stripping of the winding coil, wiring of the winding coil and the lead wire, wiring between the lead wire and the terminal, impregnation of the winding coil, lacing, etc. as in the past, and improving the assembly of the product, thereby improving the production efficiency of the product and reducing the production cost.

[0013] An electric compressor according to the present application for solving the above technical problems, characterized by comprising: an electric motor provided with a stator, a rotor, and a rotating shaft; a compression part compressing a refrigerant according to the rotation of the rotating shaft; an inverter unit controlling the driving of the electric motor; a sealing terminal electrically connecting between the electric motor and the inverter unit; and a cluster formed in an integrated form at a stator part and internally provided with a plurality of connection terminals for electrically connecting a coil wound around the stator and a plurality of connection pins provided at the sealing terminal.

[0014] Here, the stator includes a stator core; insulators coupled to both ends of the stator core, respectively, and wound with the coil, and the cluster can be formed in an integrated form at the insulator at a position adjacent to the inverter unit.

[0015] In this case, the cluster can include a connection terminal fixing part protruded in a radial direction at an outer circumferential surface side of the insulator and internally formed with a plurality of fixing grooves capable of fixing a part of the connection terminal; and a connection terminal covering part surrounding the other part of the connection terminal while being coupled to the connection terminal fixing part.

[0016] In addition, the connection terminal can include a male terminal fixed to the fixing groove part and connected to an end of the coil in a state that a part thereof is introduced into the inside of the insulator; and a female terminal coupled to the male terminal and engaged with and connected to the connection pin of the sealing terminal.

[0017] In addition, a female terminal accommodation groove accommodating a part of the female terminal is formed at the inside of the connection terminal covering part, and the connection pin of the sealing terminal can be engaged with the female terminal in a state that it is introduced into the inside of the female terminal accommodation groove to achieve electrical connection.

[0018] Further, an insertion groove communicating with the fixing groove can be formed at the insulator so that a part of the male terminal can be introduced into the inside of the insulator.

[0019] In addition, the end of the coil connected to the end of the male terminal can be arranged in parallel with the rotating shaft inside the insulator.

[0020] At this time, the end of the male terminal can be formed in a hook shape to surround and engage the end of the coil.

[0021] In addition, the end of the male terminal can be arranged between adjacent coils in a circumferential direction.

[0022] In this case, the end of the male terminal engaged with the end of the coil can be in contact with and supported by the inner circumferential surface of the insulator.

[0023] On the other hand, the connection terminal covering part can be coupled to the connection terminal fixing part in a detachable form.

[0024] In this case, the connection terminal cover portion can include a female terminal housing portion formed with a female terminal housing groove housing a portion of the female terminal, a male terminal shielding portion formed at one side of the female terminal housing portion and shielding a portion of the male terminal fixed to the fixing groove, and a fastening connection portion protruding from one side of the male terminal shielding portion and fasteningly connected with the connection terminal fixing portion.

[0025] At this time, the connection terminal cover portion can further include a coupling portion protruding from one side of the female terminal housing portion and formed with a coupling hole at the inner side, a guide groove formed at the connection terminal fixing portion and guiding movement of the coupling portion when the connection terminal cover portion is coupled, and a coupling protrusion protruding from the inner side of the guide groove and coupled with the coupling hole.

[0026] In this case, the guide groove and the coupling protrusion portion initially contacted with the coupling portion can be formed with a curved surface having a gentle curved surface shape.

[0027] According to the electric compressor for a vehicle having the above structure, the wire collecting member provided with the connection terminal is formed in one body with the insulator portion of the stator in which the coil is wound, and the other end of the connection terminal fixed to the wire collecting member is directly connected with the connection pin of the sealing terminal while the one end of the connection terminal is coupled with the end portion of the coil inside the insulator, so that the electrical connection between the sealing terminal and the electric motor can be maintained only by a simple operation of engaging and connecting the connection pin of the sealing terminal with the connection terminal portion provided at the wire collecting member, and thus, as in the prior art, the complicated and tedious processes such as peeling of the motor winding coil, wiring of the motor winding coil and the lead wire, and wiring between the lead wire and the terminal can be omitted, and in particular, the additional processes such as impregnation and lacing of the existing winding coil for stable coupling in a vibration environment can be omitted and reduced, and thus, it is advantageous in that the assembly of the product can be improved, and as a result, the production cost of the product can be greatly reduced. BRIEF DESCRIPTION OF DRAWINGS

[0028] Figure 1 FIG. 1 is a sectional view showing a sectional structure of an electric compressor for a vehicle according to one embodiment of the present application.

[0029] Figure 2 FIG. 2 is an exploded perspective view showing a main portion configuration of the electric compressor according to the present application.

[0030] Figure 3 FIG. 3 is an exploded perspective view showing a pattern of coupling the wire collecting member provided with the connection terminal to the insulator portion of the stator.

[0031] Figure 4 FIG. 4 is a detailed view showing a detailed structure of the connection terminal according to the present application.

[0032] Figure 5 is a portion-enlarged perspective view showing a state in which the connection terminal is combined with the connection terminal fixing portion of the insulator portion of the stator.

[0033] Figure 6 is a perspective view showing a state in which the connection terminal covering portion is fastened to the connection terminal fixing portion.

[0034] Figure 7 is a perspective view showing a state in which the hub member is combined with the insulator portion of the stator.

[0035] Figure 8 is a plan view as viewed from the upper portion. Figure 7

[0036] Explanation of Reference Numerals

[0037] 100: electric compressor 110: motor housing

[0038] 120: electric motor 121: stator core

[0039] 122: first insulator 123: second insulator

[0040] 124: stator 126: rotor

[0041] 128: rotating shaft 129: coil

[0042] 130: compression portion 131: fixed scroll

[0043] 132: compression chamber 133: movable scroll

[0044] 140: inverter unit 142: inverter

[0045] 144: inverter housing 150: sealed terminal

[0046] 160: connection terminal 161: male terminal

[0047] 165: female terminal 170: hub member

[0048] 171: fixing groove 172: fastening connection groove

[0049] 173: guide groove 174: connection terminal fixing portion

[0050] 175: female terminal housing portion 176: male terminal shielding portion

[0051] 177: fastening connection portion 178: connection terminal covering portion

[0052] 178a: combination portion 178b: combination hole ​

[0053] 174a: coupling protrusion 173a, 174b: curved surface DETAILED DESCRIPTION

[0054] Hereinafter, embodiments of the present application will be described in detail with reference to the accompanying drawings so that those skilled in the art to which the present application pertains can easily practice the present application.

[0055] However, the present application can be implemented in various different forms, and is not limited to the embodiments described herein. In addition, throughout the detailed description, portions marked with the same reference numerals represent the same constituent elements.

[0056] Hereinafter, a vehicle electric compressor according to an embodiment of the present application will be described in detail.

[0057] Figure 1 is a sectional view showing the overall sectional structure of a vehicle electric compressor according to one embodiment of the present application, Figure 2 is a separated perspective view showing the main part configuration of the electric compressor according to the present application.

[0058] Referring to Figure 1 and Figure 2 , the electric compressor 100 according to one embodiment of the present application includes: an electric motor 120 having a stator 124, a rotor 126, and a rotating shaft 128; a compression part 130 compressing a refrigerant according to the rotation of the rotating shaft 128; an inverter unit 140 controlling the driving of the electric motor 120; a hermetic terminal 150 electrically connecting between the electric motor 120 and the inverter unit 140; a cluster 170 formed in one body at one side end of the stator 124, and having a plurality of connection terminals 160 electrically connecting the winding coil 129 of the stator 124 and a connection pin 154 of the hermetic terminal 150 inside, and the compression part 130 having the refrigerant accommodated inside the motor housing 110 and the electric motor 120 driving the compression part 130 accommodated inside the motor housing 110.

[0059] An installation part 112 constituting an end wall for installing the inverter unit 140 is formed at one side end of the motor housing 110, and the inverter unit 140 controlling the driving of the electric motor 120 is combined at the installation part 112 part.

[0060] The inverter unit 140 includes: an inverter 142 having a circuit board 141 constituting a circuit of various driving elements for driving the electric motor 120; an inverter housing 144 accommodating the inverter 142.

[0061] The inverter 142 converts a direct current (DC) supplied from the outside into an alternating current (AC) form and applies it to the electric motor 120, thereby controlling the operation and output of the electric motor 120.

[0062] The electric motor 120 includes a stator 124 fixed to the inner circumferential surface of the motor housing 110, and a rotor 126 combined in one body with a rotating shaft 128 and rotating together with the rotating shaft 128 inside the stator 124.

[0063] The stator 124 includes a stator core 121 formed by laminating a plurality of magnetic plates having a ring shape, first and second insulators 122 and 123 coupled to both side end portions of the stator core 121, respectively, and a plurality of coils 129 wound around the inner circumferential portions of the first and second insulators 122 and 123.

[0064] The first and second insulators 122 and 123 are composed of a non-conductive material such as an uncharged synthetic resin and are inserted into both side end portions of the stator core 121 along the axial direction S and coupled to both ends of the stator core 121, respectively.

[0065] In addition, the inner circumferential portions of the first and second insulators 122 and 123 coupled to both ends of the stator core 121 are repeatedly wound with the coils 129 along the axial direction, thereby maintaining a fixed state of the wound coils 129 with the stator core 121 in a state in which the first and second insulators 122 and 123 are inserted into both ends of the stator core 121.

[0066] The compression portion 130 includes a fixed scroll 131 fixed to the motor housing 110, a movable scroll 133 engaged with the fixed scroll 131, and a compression chamber 132 for compressing refrigerant formed between the fixed scroll 131 and the movable scroll 133.

[0067] The movable scroll 133 is coupled at a position eccentric to the rotating shaft 128 of the electric motor 120 and, as the rotating shaft 128 rotates, the fixed scroll 131 eccentrically rotates while the volume of the compression chamber 132 formed between the fixed scroll 131 and the movable scroll 133 changes, thereby compressing the refrigerant.

[0068] The sealing terminal 150 is installed on the installation portion 112 of the motor housing 110 between the electric motor 120 and the inverter 142, and the through hole 115 through which the connection pin 154 of the sealing terminal 150 is provided is formed in the installation portion 112, the connection pin 154 of the sealing terminal 150 penetrates the through hole 115 and is engaged and connected with the connection terminal 160 inside the terminal collecting member 170 formed in the first insulator 122 portion of the stator 124, thereby the inverter 142 and the electric motor 120 can be electrically connected to each other through the connection terminal 160.

[0069] In another aspect, Figure 3 is a separate perspective view showing a detailed configuration of the collection member 170 provided at the end portion side of the stator 124 according to the present application, Figure 4 is a detailed view showing a detailed configuration of the connection terminal 160 installed inside the collection member 170.

[0070] In addition, Figure 5 is a perspective view showing a model in which the connection terminal 160 is combined at the connection terminal fixing portion 174 portion formed at one side of the first insulator 122, Figure 6 is a perspective view showing a model in which the connection terminal cover portion 178 is fastened at the connection terminal fixing portion 174 portion from the back portion.

[0071] In addition, Figure 7 is a combined perspective view showing a model in which the collection member 170 is combined at the first insulator 122 portion of the stator 124, Figure 8 is a plan view showing a model in which the collection member 170 is combined at the first insulator 122 portion of the stator 124 from the upper portion, Figure 7

[0072] Referring to Figures 3 to 8 , the collection member 170 is provided at the end portion side of the stator 124 disposed at a position adjacent to the inverter 142, that is, one side of the first insulator 122, and the collection member 170 is provided with the connection terminal 160 that can electrically connect the connection pin 154 of the sealing terminal 150 and the winding coil 129 inside the stator 124.

[0073] The collection member 170 is configured of the same non-conductive material (for example, synthetic resin) as the first insulator 122 and the second insulator 123, and includes the connection terminal fixing portion 174 formed in an integrated form at the outer circumferential surface side of the first insulator 122 and fixing the connection terminal 160, and the connection terminal cover portion 178 surrounding the connection terminal 160 and combined with the connection terminal fixing portion 174.

[0074] The connection terminal fixing portion 174 is formed in a structure protruding in the outer side direction at the outer circumferential surface side of the first insulator 122, and a plurality of fixing grooves 171 into which a portion of the connection terminal 160 is inserted to be fixed are formed at the inner side.

[0075] In this case, the fixing groove 171 is formed to have a groove shape corresponding to the shape of the connection terminal 160, and the connection terminal 160 in the state of being inserted into the fixing groove 171 portion can be maintained in a fixed state on the connection terminal fixing portion 174 by the shape of the fixing groove 171.

[0076] At this time, the connection terminal fixing portion 174 can be manufactured to be integrated (Body) with the first insulator 122. ​

[0077] In addition, the connection terminal cover portion 178 surrounds another portion of the connection terminal 160 fixed to the fixing groove 171 of the connection terminal fixing portion 174, and is combined with the connection terminal fixing portion 174, thereby forming a structure of the connection terminal 170 for electrically connecting with the sealing terminal 150.

[0078] On the other hand, the connection terminal 160 includes a male terminal 161 connected with the electric motor 120 side, and a female terminal 165 connected with the sealing terminal 150 side, and the male terminal 161 and the female terminal 165 are engaged with each other to form one connection terminal 160.

[0079] In other words, the connection terminal 160 is fixed to the fixing groove 171 portion of the connection terminal fixing portion 174, and has the male terminal 161 connected with the end portion of the coil 129 and the female terminal 165 engaged with the male terminal 161 and connected by engaging with the connection pin 154 of the sealing terminal 150 in a state that a portion thereof is introduced inside the first insulator 122.

[0080] The male terminal 161 is formed by bending a thin and long bar-shaped conductive body one or more times, and as shown in the embodiment, in the case of the three-phase electric motor 120 in which three connection terminals 160 are mounted, the end portion of each male terminal 161 fixed to the fixing groove 171 of the connection terminal fixing portion 174 is connected with the end portion of the coil 129 in a state that it is introduced into the space between the coils 129 arranged in the circumferential direction inside the stator 124.

[0081] In correspondence thereto, the fixing groove 171 of the connection terminal fixing portion 174 fixing the male terminal 161 is formed to have a narrow and long curved groove shape corresponding to the shape of the male terminal 161.

[0082] The male terminal 161 fixed in the fixing groove 171 is connected with the end portion of the coil 129 in a state that a portion of the end portion thereof is introduced into the inner circumferential portion space of the first insulator 122, and for this, the first insulator 122 is formed with a insertion groove 122a communicating with the fixing groove 171 so that a portion of the end portion of the male terminal 161 penetrates the first insulator 122 and is introduced into the inside space of the first insulator 122.

[0083] The end portion of the male terminal 161 introduced into the inner circumferential portion space of the first insulator 122 is disposed between the adjacent coils 129 arranged in the circumferential direction inside the first insulator 122, and in this case, the length of the male terminal 161 located in the center of the three male terminals 161 is formed shorter than the length of the male terminals 161 located on both sides thereof, and thereby as shown in the embodiment, the end portion portions of the three male terminals 161 are arranged in order between the coils 129 in the circumferential direction inside the first insulator 122.

[0084] In addition, the end portion 129a of the coil 129 connected to the end portion 162 of the male terminal 161 is arranged in the first insulator 122 in parallel with the rotating shaft 128 and is connected to the end portion of the male terminal 161.

[0085] At this time, the end portion 162 of the male terminal 161 connected to the end portion 129a of the coil 129 is bent in a hook shape, and the hook-shaped end portion 162 of the male terminal 161 is engaged with the coil 129 in a structure surrounding the end portion 129a of the coil 129.

[0086] In this case, when the end portion 129a of the coil 129 is engaged with the end portion 162 of the male terminal 161, the end portion 129 of the coil 129 does not need to pass through a separate peeling (peeling of a porcelain varnish of the coil), but after the end portion 129a of the coil 129 is seated inside the hook-shaped end portion 162 of the male terminal 161, is engaged by a fusing method of melting a portion of a base material, and thus electrical connection can be performed.

[0087] In addition, by fusing, the hook-shaped end portion 162 of the male terminal 161 to which the end portion 129a of the coil 129 is engaged is in contact with and supported by a portion of the inner circumferential surface of the first insulator 122, and thus even in a vibration environment in which the electric motor 120 is driven, a stable fastening connection force and a support force can be secured.

[0088] At this time, the hook-shaped end portions 162 of the three male terminals 161 arranged between the coils 129 arranged in the circumferential direction in the inner circumferential portion space of the first insulator 122 are all arranged in the same direction toward the clockwise direction, and thus can be in contact with and supported by the side surfaces of the adjacent coils 129.

[0089] On the other hand, the female terminal 165 connected to the male terminal 161 is formed in a shape corresponding to the bar-shaped connection pin 154 (a shape bent like a binoculars) so as to be inserted and engaged with the connection pin 154 of the sealing terminal 150 formed in a bar type, as a portion engaged with the connection pin 154 provided to the sealing terminal 150.

[0090] Also, the engaging portion 166 having a "V" shape is formed on one side of the female terminal 165, and in a state in which the one end portion of the male terminal 161 is seated in the engaging portion 166 of the female terminal 165 having the "V" shape, is connected by welding.

[0091] In this case, the male terminal 161 and the female terminal 165 are manufactured in different independent structural forms, and are coupled to each other by welding in the embodiment, but the male terminal 161 and the female terminal 165 can be manufactured in the form of a connection terminal 160 formed in one structure by a certain degree of shape change.

[0092] On the other hand, as described above, the connection terminal fixing part 174 provided at the outer circumferential surface side of the first insulator 122 is formed in one body with the first insulator 122, and an insulating connection terminal covering part 178 for fixing the connection terminal 160 in the fixing groove 171 is assembled to the connection terminal fixing part 174, thereby completing the structure of the hub member 170 for electrical connection with the sealing terminal 150.

[0093] The inner side of the connection terminal covering part 178 is formed with a straight hexahedron space, i.e., a female terminal housing groove 175b, divided by a partition wall 175a, so as to house a portion of the female terminal 165. Therefore, the connection pin 154 of the sealing terminal 150 is introduced into the inside of the female terminal housing groove 175b, and is engaged with the female terminal 165, so as to be connected with the connection terminal 160. Also, the connection terminal covering part 178 is formed of the same material as the connection terminal fixing part 174, and is assembled to the connection terminal fixing part 174 in a detachable form.

[0094] In detail, the connection terminal covering part 178 includes a female terminal housing part 175 formed with a plurality of female terminal housing grooves 175b, a male terminal shielding part 176 formed at one side of the female terminal housing part 175 to shield the male terminal 161 fixed to the fixing groove 171, and a pair of fastening connection parts 177 protruded at one side of the male terminal shielding part 176 and fastened to the connection terminal fixing part 174.

[0095] The male terminal shielding part 176 is formed in a circular arc shape corresponding to the circumferential shape of the first insulator 122, and is in contact with the portion of the connection terminal fixing part 174 in which the male terminal 161 is fixed, thereby functioning to shield the male terminal 161 from the outside.

[0096] The pair of fastening connection parts 177 are protruded from the male terminal shielding part 176 in the axial direction of the stator 124, and are engaged with the fastening connection groove 172 portions having a recess structure formed at both sides of the connection terminal fixing part 174, and are elastically fastened in a hook fastening connection manner.

[0097] In other words, the connection terminal covering part 178 can be fastened and assembled to the connection terminal fixing part 174 in a simple manner in which the both-side fastening connection part 177 portions are aligned with the fastening connection groove 172 portions formed at both sides of the connection terminal fixing part 174, and are pushed in the axial direction S.

[0098] At this time, in the connection terminal cover part 178, the female terminal housing part 175 portion located at the opposite side of the male terminal shielding part 176 is provided with a pair of coupling parts 178a protruding in a direction parallel to the pair of fastening coupling parts 177, and a coupling hole 178b having a quadrangular shape is formed inside the coupling part 178a.

[0099] In addition, when the connection terminal cover part 178 is assembled to the connection terminal fixing part 174, a guide groove 173 having a quadrangular slot shape with a stepped structure for guiding the movement of the coupling part 178a is formed in the rear portion of the connection terminal fixing part 174 corresponding to the coupling part 178a. Also, a coupling protrusion 174a having a hexahedral pattern corresponding to the coupling hole 178b is protrudingly formed inside the guide groove 173 so that when the connection terminal cover part 178 is assembled, it can be coupled in a form engaged with the coupling hole 178b of the coupling part 178a.

[0100] Therefore, when the connection terminal cover part 178 is assembled to the connection terminal fixing part 174, the pair of coupling parts 178a formed in the female terminal housing part 175 moves along the inside of the pair of guide grooves 173 formed in the connection terminal fixing part 174, so that the assembly can be achieved by the mutual coupling of the coupling hole 178b and the coupling protrusion 174a.

[0101] At this time, the guide groove 173 and the coupling protrusion 174a portion initially contacted in the coupling of the coupling part 178a is formed with a curved surface 173a, 174b having a gentle curved surface shape, so that the coupling part 178a can be easily introduced into the inside of the guide groove 173 through the curved surface 173a formed in the entrance portion of the guide groove 173, and in addition, the coupling part 178a moves smoothly along the curved surface 174b formed in the coupling protrusion 174a portion and in the assembly direction (axial direction), so that the coupling hole 178b can be engaged and coupled with the coupling protrusion 174a.

[0102] As described above, the connection terminal cover part 178 can be stably fastened and coupled to the connection terminal fixing part 174 in a more robust structure through the pair of fastening coupling parts 177 located in the side surface parts and the pair of coupling parts 178a located in the rear surface part. Therefore, even in various vibration environments generated when the electric motor 120 and the compression part 130 are driven in the electric compressor 100, the junction member 170 can maintain a stable coupling state by securing a firm assembly and fastening coupling force.

[0103] According to the electric compressor structure for vehicle of the present application having the above-described mechanism structure, the first insulator 122 portion of the stator 124 in which the coil 129 is wound is formed in an integrated form with the terminal collecting member 170 provided with the connection terminal 160, and the connection pin 154 of the sealing terminal 150 is directly connected to the other side end of the connection terminal 160 fixed to the terminal collecting member 170 while the one side end of the connection terminal 160 is engaged with the end portion 129a of the coil 129 inside the first insulator 122, so that the electrical connection between the sealing terminal 150 and the electric motor 120 can be maintained only by the simple operation of engaging the connection pin 154 of the sealing terminal 150 with the connection terminal 160 portion provided in the terminal collecting member 170, and therefore, in manufacturing the electric compressor 100 product, the peeling of the motor winding coil, the wiring of the motor winding coil and the lead wire, the wiring between the lead wire and the terminal, and the like complicated and tedious processes can be omitted as in the past, and in particular, the additional processes such as the impregnation, lacing, and the like of the existing winding coil for stable bonding in the vibration environment can be omitted and reduced, and therefore, it is advantageous in that the assembly of the product can be improved, and as a result, the production cost of the product can be greatly reduced.

[0104] While the preferred embodiments of the present application have been described above, the scope of the present application is not limited to only such specific embodiments, and those having ordinary knowledge in the art can make appropriate changes within the scope recited in the patent claims of the present application.

Claims

1. An electric compressor, characterized in that, include: An electric motor is equipped with a stator, a rotor, and a rotating shaft; The compression section compresses the refrigerant based on the rotation of the rotating shaft; Inverter unit, which controls the drive of electric motor; Sealed terminals, which provide electrical connection between the electric motor and the inverter unit; as well as The hub component is integrally formed in the stator part and has multiple connecting terminals inside for electrically connecting the coil wound on the stator and multiple connecting pins provided in the sealing terminals. The stator includes: Stator core; Insulators, which are respectively attached to both ends of the stator core and wound with coils, A hub component is integrally formed on the insulator adjacent to the inverter unit; Hub components include: The connecting terminal fixing part is formed radially protruding on one side of the outer peripheral surface of the insulator, and has a plurality of fixing grooves formed on the inner side for fixing a part of the connecting terminal. The connecting terminal cover surrounds another part of the connecting terminal and is combined with the connecting terminal fixing part; The connecting terminal fixing part can be manufactured to be integral with the first insulator; The connection terminals include: The male terminal is fixed to the fixing groove and, with a portion of it introduced into the insulator, is connected to the end of the coil. After the end of the coil is placed inside the hook-shaped end of the male terminal, it is joined by melting a portion of the substrate to achieve an electrical connection. The female terminal is combined with the male terminal and engages with the connecting pin of the sealing terminal for connection; A "V"-shaped joint is formed on one side of the female terminal, and the male terminal is connected by welding while one end of the male terminal is placed in the "V"-shaped joint of the female terminal.

2. The electric compressor according to claim 1, characterized in that, A female terminal receiving groove is formed on the inner side of the connecting terminal cover to receive a portion of the female terminal. The connecting pin of the sealed terminal engages with the female terminal when it is introduced into the receiving groove of the female terminal to achieve electrical connection.

3. The electric compressor according to claim 1, characterized in that, The insulator has a slot that communicates with the fixing groove so that a portion of the male terminal can be introduced into the inside of the insulator.

4. The electric compressor according to claim 1, characterized in that, The end of the coil connected to the end of the male terminal is arranged parallel to the rotation axis within the insulator.

5. The electric compressor according to claim 4, characterized in that, The end of the male terminal is formed into a hook shape to surround and engage the end of the coil.

6. The electric compressor according to claim 4, characterized in that, The ends of the male terminals are arranged circumferentially between adjacent coils.

7. The electric compressor according to claim 5, characterized in that, The end of the male terminal to which the coil ends is engaged contacts and is supported by the inner circumferential surface of the insulator.

8. The electric compressor according to claim 1, characterized in that, The connecting terminal cover is detachably attached to the connecting terminal fixing part.

9. The electric compressor according to claim 8, characterized in that, The connection terminal cover includes: The female terminal receiving section has a female terminal receiving groove that receives a portion of the female terminal; The male terminal shielding portion is formed on one side of the female terminal receiving portion and shields the male terminal portion that is fixed in the fixing groove; The fastening connection portion protrudes from one side of the male terminal shielding portion and is fastened to the connection terminal fixing portion.

10. The electric compressor according to claim 9, characterized in that, include: The connecting portion protrudes from one side of the female terminal receiving portion and has a connecting hole formed on the inner side; A guide groove is formed in the connecting terminal fixing part and guides the movement of the connecting part when it is engaged with the connecting terminal covering part; The protrusion is formed on the inside of the guide groove and engages with the engagement hole.

11. The electric compressor according to claim 10, characterized in that, The guide groove and the joint protrusion that initially come into contact with the joint have a gently curved surface.

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