Motor device and oil pump device

Abstract

To provide a motor device with which a connector unit is downsized.SOLUTION: A motor device comprises: a first terminal part in which respective one ends of a pair of power supply lines and a pair of signal lines are arranged in a first direction with a space therebetween, and are exposed from a circuit connection part; a second terminal part in which respective other ends of the pair of power supply lines and the pair of signal lines are arranged in a layout differing from a layout of the first terminal part, and are exposed from external connection part; and a terminal connector that includes a parallel part in which the pair of power supply lines and the pair of signal lines, respectively, extend in a second direction that is orthogonal to the first direction by being spaced by a given interval in the first direction, at a position adjacent to the first terminal part, and a bent part in which the pair of power supply lines and the pair of signal lines, respectively, are bent between the second terminal part and the parallel part within a width range of the parallel part in the first direction, so as to convert the layouts of the first and second terminal parts.SELECTED DRAWING: Figure 3

Description

Technical Field

[0001] The present invention relates to a motor device and an oil pump device equipped with the same.

Background Art

[0002] In recent years, efforts have been made to promote the Sustainable Development Goals (2030 Agenda for Sustainable Development, adopted at the United Nations Summit on September 25, 2015, hereinafter referred to as "SDGs"). Along with this, technologies are known that aim to prevent the generation of waste, reduce waste, and significantly reduce the generation of waste through the recycling and reuse of products in order to ensure sustainable production and consumption patterns.

[0004] Conventionally, an oil pump device in which an oil pump for pumping hydraulic oil and a motor device for driving the oil pump are integrated has been known (see, for example, Patent Document 1). And for a motor device used in such applications, an electromechanical integrated type including an electric motor, a control circuit for controlling the operation of the electric motor, and a connector unit for connecting the control circuit to an external device (for example, a power source) is generally adopted.

[0004] The connector unit includes a pair of power lines through which a drive current for driving the electric motor flows and a pair of signal lines through which a control signal for controlling the control circuit flows. And the layout of the pair of power lines and the pair of signal lines is different between the first terminal portion connected to the control circuit and the second terminal portion connected to the external device. Therefore, the pair of power lines and the pair of signal lines are bent within the connector unit in order to convert the layout between the first terminal portion and the second terminal portion.

Prior Art Documents

Patent Documents

[0005]

Patent Document 1

[0006] In the connector unit with the above configuration, it is common practice to bend each wire so that it protrudes in the width direction in order to prevent short circuits between the pair of power lines and the pair of signal lines. As a result, there is a problem in that the connector unit becomes larger in the width direction.

[0007] Therefore, the object of the present invention is to provide a motor device with a miniaturized connector unit. [Means for solving the problem]

[0008] To achieve the above objective, the present invention provides a motor device comprising an electric motor, a control circuit for controlling the operation of the electric motor, and a connector unit for connecting the control circuit to an external device, wherein the connector unit comprises a terminal connector including a pair of power lines through which a drive current for driving the electric motor flows, and a pair of signal lines through which a control signal for controlling the control circuit flows, an inner molded body covering the terminal connector such that the pair of power lines and the pair of signal lines are arranged at a predetermined interval, and an outer molded body covering the inner molded body and having a circuit connection portion connected to the control circuit and an external connection portion connected to the external device, wherein the terminal connector comprises a pair of the power lines A first terminal portion is provided, in which one end of each of the power line and the pair of signal lines is arranged at a predetermined distance in the first direction and is exposed from the circuit connection portion; a second terminal portion is provided, in which the other ends of each of the pair of power lines and the pair of signal lines are arranged in a different layout from the first terminal portion and is exposed from the external connection portion; a parallel portion is provided adjacent to the first terminal portion, in which each of the pair of power lines and the pair of signal lines extends parallel to a second direction perpendicular to the first direction at a predetermined distance in the first direction; and between the second terminal portion and the parallel portion, each of the pair of power lines and the pair of signal lines bends within the width of the parallel portion in the first direction so as to change the layout of the first terminal portion and the second terminal portion. Furthermore, when the bent portion is viewed from a third direction perpendicular to the first and second directions, the pair of power lines and the pair of signal lines include an overlapping portion arranged to overlap each other and a non-overlapping portion arranged offset in the first or second direction, and the inner molded body has a first opening formed at a position facing the non-overlapping portion in the third direction, extending from the outer surface toward each of the pair of power lines and the pair of signal lines. It is characterized by the following: [Effects of the Invention]

[0009] According to the present invention, a motor device with a miniaturized connector unit can be obtained. Problems, configurations, and effects other than those described above will be clarified by the following description of embodiments. [Brief explanation of the drawing]

[0010] [Figure 1] This is an external perspective view of the oil pump device according to this embodiment. [Figure 2] This is a disassembled perspective view of the connector unit. [Figure 3]These are front, rear, top, side, and bottom views of the terminal connector. [Figure 4] These are the front view, top view, side view, and bottom view of the connector subunit. [Figure 5] This is a perspective view of the connector unit. [Figure 6] This is a perspective view of the main parts around the cylindrical body. [Modes for carrying out the invention]

[0011] Hereinafter, an oil pump device 1 according to an embodiment of the present invention will be described with reference to the drawings. Figure 1 is an external perspective view of the oil pump device 1 according to this embodiment.

[0012] The oil pump device 1 according to this embodiment supplies oil (e.g., lubricating oil) to, for example, an engine clutch or transmission mechanism clutch mounted in an automobile. However, the application of the oil pump device 1 is not limited to this. As shown in Figure 1, the oil pump device 1 is a so-called "electric oil pump" comprising a motor device 2 and an oil pump 3.

[0013] Motor device 2 generates the driving force to rotate the oil pump 3. The oil pump 3 rotates when the driving force from motor device 2 is transmitted to it, compressing and pumping the oil (hereinafter referred to as "pressure pumping"). The configuration of the oil pump 3 is already well known, so a detailed explanation will be omitted.

[0014] The motor device 2 is a so-called "mechatronics-integrated" motor, comprising an electric motor 4, a control circuit 5 that controls the operation of the electric motor 4, and a connector unit 6 that connects the control circuit 5 to an external device (not shown, for example, a power supply). The electric motor 4 is, for example, a brushless motor. The configuration of the electric motor 4 and the control circuit 5 is already well known, so a detailed explanation will be omitted.

[0015] Figure 2 is an exploded perspective view of the connector unit 6. As shown in Figure 2, the connector unit 6 mainly comprises a terminal connector 10, an inner molded body 20, and an outer molded body 30. The terminal connector 10 is a conductive component through which drive current and control signals flow. The inner molded body 20 is an insulating material that covers (moldes) the terminal connector 10. Hereinafter, the part in which the terminal connector 10 is molded with the inner molded body 20 will be referred to as the "connector subunit 10&20". The outer molded body 30 is an insulating material that further covers (moldes) the connector subunit 10&20.

[0016] Figure 3 shows the front view (left), rear view (right), top view (top), side view (middle), and bottom view (bottom) of the terminal connector 10. As shown in Figures 2 and 3, the terminal connector 10 consists of a pair of power lines 11a and 11b and a pair of signal lines 12a and 12b. The pair of power lines 11a and 11b carry the drive current for driving the electric motor 4. The pair of signal lines 12a and 12b carry the control signals for controlling the control circuit 5.

[0017] The pair of power lines 11a, 11b and the pair of signal lines 12a, 12b extend generally in the front-to-back direction, each bending along the way. Furthermore, the pair of power lines 11a, 11b and the pair of signal lines 12a, 12b are divided in the front-to-back direction into a first terminal section 13, a second terminal section 14, a parallel section 15, and a bent section 16. In this specification, the left-to-right direction is referred to as the first direction, the front-to-back direction as the second direction, and the up-to-down direction as the third direction. However, the first, second, and third directions are relative and are not limited to the above example (i.e., they do not limit the orientation in which the oil pump device 1 is installed).

[0018] The first terminal portion 13 is one end (the end on the back side) of the terminal connector 10 and is connected to the control circuit 5. The pair of power lines 11a, 11b and the pair of signal lines 12a, 12b are arranged (laid out) at a predetermined interval in the left-right direction in the first terminal portion 13. The layout of the first terminal portion 13 is appropriately changed by the control circuit 5.

[0019] The second terminal portion 14 is the other end (the end on the front side) of the terminal connector 10 and is connected to an external device. The pair of power lines 11a, 11b and the pair of signal lines 12a, 12b are arranged (laid out) so as to be separated in the left-right direction and the front-back direction in the second terminal portion 14. More specifically, the pair of power lines 11a, 11b are arranged at a predetermined interval in the left-right direction above the pair of signal lines 12a, 12b. Also, the pair of signal lines 12a, 12b are arranged at a predetermined interval in the left-right direction below the pair of power lines 11a, 11b. The layout of the second terminal portion 14 is appropriately changed by the interface of the external device. That is, the second terminal portion 14 may have any layout as long as it is different from the first terminal portion 13.

[0020] The parallel portion 15 is located between the first terminal portion 13 and the bent portion 16 in the front-back direction (that is, at a position adjacent to the first terminal portion 13). The pair of power lines 11a, 11b and the pair of signal lines 12a, 12b extend parallel to each other in the front-back direction at a predetermined interval in the left-right direction in the parallel portion 15.

[0021] The bent section 16 is located between the second terminal section 14 and the parallel section 15 in the front-rear direction. The pair of power lines 11a, 11b and the pair of signal lines 12a, 12b are bent at the bent section 16 in such a way as to change the layout of the first terminal section 13 and the second terminal section 14. Furthermore, the pair of power lines 11a, 11b and the pair of signal lines 12a, 12b are bent at the bent section 16 in such a way that they do not come into contact (short circuit) with each other (i.e., they are separated by a predetermined distance). In other words, how the pair of power lines 11a, 11b and the pair of signal lines 12a, 12b are bent at the bent section 16 varies appropriately depending on the layout of the first terminal section 13 and the second terminal section 14.

[0022] However, the pair of power lines 11a, 11b and the pair of signal lines 12a, 12b are bent at the bent portion 16 within the range of the parallel portion 15 in the left-right direction. In other words, the pair of power lines 11a, 11b and the pair of signal lines 12a, 12b do not protrude beyond the width of the parallel portion 15 in the left-right direction at the bent portion 16. To put it another way, the maximum width of the terminal connector 10 in the left-right direction is equal to the width of the parallel portion 15.

[0023] Furthermore, in the parallel section 15, the power line 11a and signal line 12a have protrusions 17a and 18a formed on them at positions facing each other. The protrusions 17a and 18a project in directions that are close to each other. The power line 11a and signal line 12a are integrally molded by press working. Therefore, the power line 11a and signal line 12a are connected by a bridge (not shown) formed at the positions of the protrusions 17a and 18a. Then, as will be described later, after the terminal connector 10 is molded in the inner mold body 20, the bridge is removed (i.e., the power line 11a and signal line 12a are cut). In other words, the protrusions 17a and 18a are traces of where the bridge was cut (the ends of the bridge). Similarly, the power line 11b and signal line 12b in the parallel section 15 have protrusions 17b and 18b formed on them.

[0024] Furthermore, when the bent portion 16 is viewed from above and below, the pair of power lines 11a, 11b and the pair of signal lines 12a, 12b include an overlapping portion where they are arranged to overlap each other and a non-overlapping portion where they are arranged not to overlap (i.e., offset in the left-right and front-back directions). In the overlapping portion, the power lines 11a and signal lines 12a are located below the power lines 11b and signal lines 12b. The pair of power lines 11a, 11b and the pair of signal lines 12a, 12b are also arranged at a predetermined distance apart in the vertical direction even in the overlapping portion. In other words, the pair of power lines 11a, 11b and the pair of signal lines 12a, 12b do not come into contact throughout the entire area of ​​the terminal connector 10.

[0025] Figure 4 shows the front view (left), top view (top), side view (middle), and bottom view (bottom) of the connector subunits 10 and 20. In Figure 4, the terminal connector 10 is shown with shading. The connector subunits 10 and 20 are injection molded by filling a mold that opens and closes vertically with resin material while the terminal connector 10 is inserted inside. In this way, the terminal connector 10 is molded in the inner mold body 20, and the connector subunits 10 and 20 are formed.

[0026] As shown in Figure 4, the first terminal portion 13 and the second terminal portion 14 of the terminal connector 10 are exposed from the inner molded body 20. Also, as shown in Figures 2 and 4, the inner molded body 20 has a plurality of first openings 21a, 21b, 21c, 21d, 21e, 21f, 21g, and 21h, a plurality of protrusions 22a and 22b, a plurality of second openings 23a, 23b, 23c, and 23d, a flange portion 24, and a plurality of positioning portions 25a and 25b.

[0027] The first openings 21a to 21d extend downward from the upper surface (outer peripheral surface) of the inner mold body 20 toward the terminal connector 10. Furthermore, the first openings 21a to 21d are formed facing the bent portion 16 of the terminal connector 10 in the vertical direction. More specifically, the first openings 21a to 21d are formed facing the non-overlapping portions of the power line 11a and signal line 12a in the vertical direction.

[0028] The first openings 21e to 21h extend upward from the lower surface (outer peripheral surface) of the inner mold body 20 toward the terminal connector 10. Furthermore, the first openings 21e to 21h are formed facing the bent portion 16 of the terminal connector 10 in the vertical direction. More specifically, the first openings 21e to 21h are formed facing the non-overlapping portions of the power line 11b and signal line 12b in the vertical direction.

[0029] When the connector subunits 10 and 20 are injection molded, pins (not shown) are placed at positions corresponding to the first openings 21a to 21h. As shown by dot hatching in Figure 3, the pins placed at positions corresponding to the first openings 21a to 21d contact the power line 11a and signal line 12a from above, restricting their upward movement. Similarly, the pins placed at positions corresponding to the first openings 21e to 21h contact the power line 11b and signal line 12b from below, restricting their downward movement. After injection molding, the pins are removed to form the first openings 21a to 21h. This prevents the power lines 11a, 11b and signal lines 12a, 12b from moving (contacting) due to the pressure of the resin material filling the mold.

[0030] Specifically, the first openings 21a to 21d are positioned on one side of the inner mold body 20 in the first direction (i.e., the upper side), facing the power line 11a and signal line 12a located on the other side in the third direction (i.e., the lower side) in the overlapping portion. The first openings 21e to 21h are positioned on the other side of the inner mold body 20 in the first direction (i.e., the lower side), facing the power line 11b and signal line 12b located on one side in the third direction (i.e., the upper side) in the overlapping portion.

[0031] As shown by the hatched lines in Figure 3, the protrusions 22a and 22b extend downward from the upper surface (outer surface) of the inner mold body 20 toward the bent portion 16 of the terminal connector 10. Protrusion 22a contacts the power line 11a from the rear (second direction) and the signal line 12b from the right (third direction). Protrusion 22b contacts the power line 11b from the left (third direction) and the signal line 12a from the front (second direction).

[0032] When the connector subunits 10 and 20 are injection molded, pins (not shown) are placed at positions corresponding to the protrusions 22a and 22b. This restricts the position of the power lines 11a and 11b and the signal lines 12a and 12b in the left-right and front-back directions. The pins placed at positions corresponding to the protrusions 22a and 22b are positioned at a predetermined distance from the power lines 11a and 11b and the signal lines 12a and 12b. As a result, when the resin material is filled into the mold, the resin material also enters the space between the power lines 11a and 11b and the signal lines 12a and 12b and the pins. Consequently, the protrusions 22a and 22b are formed.

[0033] In other words, the protrusions 22a and 22b extend in a third direction toward the bent portion 16 of the terminal connector 10 and contact at least one of the power lines 11a and 11b and the signal lines 12a and 12b from a first or second direction.

[0034] The second openings 23a and 23b extend downward from the upper surface (outer surface) of the inner mold body 20 toward the terminal connector 10. The second openings 23c and 23d extend upward from the lower surface (outer surface) of the inner mold body 20 toward the terminal connector 10. The second openings 23a to 23d are formed facing the parallel portion 15 of the terminal connector 10 in the vertical direction. More specifically, the second openings 23a to 23d are formed in the vertical direction facing the protrusions 17a, 17b, 18a, and 18b of the power lines 11a, 11b and signal lines 12a, 12b.

[0035] When the connector subunits 10 and 20 are injection molded, a portion of the mold is positioned at the locations corresponding to the second openings 23a to 23d. This portion of the mold contacts the power lines 11a and 11b and the signal lines 12a and 12b in the upward and left-right directions. This restricts the vertical and left-right positions of the power lines 11a and 11b and the signal lines 12a and 12b in the parallel section 15. When the connector subunits 10 and 20 are removed from the mold, the second openings 23a to 23d are formed. Furthermore, the bridge is removed through the second openings 23a to 23d, forming protrusions 17a, 17b, 18a, and 18b on the terminal connector 10.

[0036] The flange portion 24 is a part that protrudes radially outward from approximately the center in the front-rear direction of the inner mold body 20 and is continuous in the circumferential direction. The flange portion 24 serves to restrict the front-rear position of the connector subunits 10 and 20 when molded with the outer mold body 30, and also prevents the outer mold body 30 from having parts with extremely thick walls (i.e., uneven wall thickness).

[0037] The positioning portions 25a and 25b are provided on the front side of the inner mold body 20 (more specifically, in front of the flange portion 24). Furthermore, the positioning portions 25a and 25b protrude radially outward from the outer circumferential surface of the inner mold body 20. In this embodiment, the positioning portion 25a protrudes to the right from the lower right corner of the inner mold body 20 and extends in the front-rear direction. The positioning portion 25b protrudes to the left from the upper left corner of the inner mold body 20 and extends in the front-rear direction. As will be described later, the positioning portions 25a and 25b play a role in preventing the connector subunits 10 and 20 from rotating within the mold when molding the connector unit 6.

[0038] Figure 5 is a perspective view of the connector unit 6. The connector unit 6 is injection molded by filling a mold that opens and closes in the left-right direction with resin material while the connector subunits 10 and 20 are inserted into the mold. As a result, the connector subunits 10 and 20 are molded in the outer mold body 30, forming the connector unit 6. As shown in Figures 2 and 5, the connector unit 6 mainly comprises a circuit connection part 31 and an external connection part 32.

[0039] The circuit connection section 31 is an interface that connects the first terminal section 13 to the control circuit 5. The circuit connection section 31 exposes the first terminal section 13 to the outside (back) of the connector unit 6. By fixing the circuit connection section 31 to the case of the control circuit 5 with bolts or the like, the first terminal sections 13 of the power lines 11a, 11b and signal lines 12a, 12b are electrically connected to the control circuit 5.

[0040] The external connection section 32 is an interface for connecting the second terminal section 14 to an external device. The external connection section 32 comprises a cylindrical body 33. The cylindrical body 33 has a cylindrical outer shape that protrudes forward (in the second direction) so as to surround the inner molded body 20. The protruding end (front end) of the cylindrical body 33 is open. Furthermore, the external connection section 32 (cylindrical body 33) exposes the second terminal section 14 to the outside (front) of the connector unit 6. When the external connection section 32 (cylindrical body 33) is inserted into the interface of the external device, the second terminal sections 14 of the power lines 11a, 11b and signal lines 12a, 12b are electrically connected to the external device.

[0041] Figure 6 is a perspective view of the main parts around the cylindrical body 33. In Figure 6, the inner mold body 20 is shown with shading. As shown in Figure 6, recesses 34a and 34b are formed in the outer mold body 30. The recesses 34a and 34b are formed inside the cylindrical body 33 and outside the inner mold body 20. More specifically, the recesses 34a and 34b are formed adjacent to the inner mold body 20 in the left-right direction. Furthermore, the recesses 34a and 34b are recessed from the front to the rear (second direction) of the outer mold body 30.

[0042] Furthermore, parts of the sides of recesses 34a and 34b are cut out. As a result, a portion of the inner mold body 20 is exposed to the interior of recesses 34a and 34b through the cut-out sides of recesses 34a and 34b. More specifically, as shown in Figure 6(A), the upper surface of the positioning portion 25a and the right side of the inner mold body 20 connected thereto are exposed to the interior of recess 34a. Also, as shown in Figure 6(B), the lower surface of the positioning portion 25b and the left side of the inner mold body 20 connected thereto are exposed to the interior of recess 34b.

[0043] When the connector unit 6 is injection molded, a portion of the mold is positioned in the locations corresponding to the recesses 34a and 34b. This portion of the mold contacts the positioning portions 25a and 25b and the side surface of the inner mold body 20 in the upward and left-right directions. This prevents the connector subunits 10 and 20 from rotating due to the pressure of the resin material filling the mold. Furthermore, the resin material does not enter the contact surface between the connector subunits 10 and 20 and the mold. As a result, when the connector unit 6 is removed from the mold, the portion of the inner mold body 20 that was in contact with the mold is exposed inside the recesses 34a and 34b.

[0044] According to the above embodiment, for example, the following effects are achieved.

[0045] According to the above embodiment, in the bent portion 16 of the terminal connector 10, the power lines 11a, 11b and signal lines 12a, 12b are bent within the range of the parallel portion 15 in the left-right direction, so that the terminal connector 10 can be made smaller in the width direction. As a result, a motor device 2 and an oil pump device 1 equipped with a small connector unit 6 can be obtained.

[0046] Furthermore, according to the above embodiment, when the connector subunits 10 and 20 are injection molded, the vertical position of the power lines 11a and 11b and the signal lines 12a and 12b is restricted by arranging pins at positions corresponding to the first openings 21a to 21h. As a result, even if the spacing between the power lines 11a and 11b and the signal lines 12a and 12b is set small, short circuits can be prevented, and the connector unit 6 can be made smaller.

[0047] Furthermore, according to the above embodiment, by providing projections 22a and 22b on the inner molded body 20 that contact at least one of the power lines 11a and 11b and the signal lines 12a and 12b from the left-right or front-back direction, the positions of the power lines 11a and 11b and the signal lines 12a and 12b in the left-right and front-back directions are restricted. As a result, even if the spacing between the power lines 11a and 11b and the signal lines 12a and 12b is set small, short circuits can be prevented, and the connector unit 6 can be made smaller.

[0048] Furthermore, according to the above embodiment, when injection molding the connector subunits 10 and 20, the vertical and horizontal positions of the power lines 11a and 11b and signal lines 12a and 12b are restricted by positioning a part of the mold at a location corresponding to the second openings 23a to 23d. As a result, even if the spacing between the power lines 11a and 11b and signal lines 12a and 12b is set small, short circuits can be prevented, and the connector unit 6 can be made smaller.

[0049] Furthermore, according to the above embodiment, by providing second openings 23a to 23b at positions facing the bridge connecting adjacent power lines 11a, 11b and signal lines 12a, 12b, the bridge can be cut after the terminal connector 10 has been molded with the inner mold body 20. As a result, the positional accuracy of the power lines 11a, 11b and signal lines 12a, 12b can be easily improved.

[0050] Furthermore, according to the above embodiment, when injection molding the connector unit 6, by positioning a part of the mold at the positions corresponding to the recesses 34a and 34b, it is possible to prevent the connector subunits 10 and 20 from rotating within the connector unit 6. In addition, by miniaturizing the terminal connector 10 in the left-right direction, the positioning portions 25a and 25b formed on the outer circumferential surface of the inner mold body 20 can be housed inside the cylindrical body 33. As a result, the connector unit 6 can be miniaturized.

[0051] Furthermore, as in the embodiment described above, by miniaturizing the connector unit 6, the amount of resin used in the inner mold body 20 and the outer mold body 30 can be reduced. In addition, by employing the various positioning methods described above, a reduction in defective products can be expected. These contribute to ensuring sustainable production and consumption patterns in line with the SDGs.

[0052] Embodiments of the present invention have been described above. It should be noted that the present invention is not limited to the embodiments described above, and various modifications are included. For example, the embodiments described above are described in detail to make the present invention easier to understand, and are not necessarily limited to those having all the described configurations. Furthermore, it is possible to replace some of the configurations of this embodiment with those of other embodiments, and it is also possible to add configurations from other embodiments to the configuration of this embodiment. Moreover, it is possible to add, delete, or replace some of the configurations of this embodiment with those of other embodiments. [Explanation of Symbols]

[0053] 1: Oil pump device 2: Motor device 3: Oil pump 4: Electric motor 5: Control circuits 6: Connector Unit 10: Terminal connector 11a,11b: Power line 12a,12b: Signal line 13: 1st terminal part 14:Second terminal part 15: Parallel section 16: Bending section 17a, 17b, 18a, 18b: convex part 20: Inner mold body 21a~21h: 1st opening 22a, 22b:Protrusion 23a~23d: 2nd opening 24: Flange section 25a, 25b: Positioning section 30: Outer mold body 31: Circuit connection section 32: External connection section 33: Cylindrical body 34a, 34b: recessed

Claims

1. Electric motor and, A control circuit for controlling the operation of the electric motor, A motor device comprising the control circuit and a connector unit for connecting to an external device, The connector unit is A terminal connector including a pair of power lines through which a drive current for driving the electric motor flows, and a pair of signal lines through which a control signal for controlling the control circuit flows, An inner molded body covering the terminal connector is provided such that a pair of power lines and a pair of signal lines are arranged at a predetermined distance apart. The outer mold body covers the inner mold body and has a circuit connection portion connected to the control circuit and an external connection portion connected to the external device, The aforementioned terminal connector is One end of each of the pair of power lines and the pair of signal lines is arranged at a predetermined distance in the first direction, and a first terminal portion is exposed from the circuit connection portion, The other ends of the pair of power lines and the pair of signal lines are arranged in a different layout from the first terminal section, and a second terminal section is exposed from the external connection section, At a position adjacent to the first terminal portion, each of the pair of power lines and the pair of signal lines has a parallel portion that extends parallel to a second direction perpendicular to the first direction, with a predetermined distance between them in the first direction, Between the second terminal portion and the parallel portion, each of the pair of power lines and the pair of signal lines includes a bent portion that is bent within the width of the parallel portion in the first direction so as to change the layout of the first terminal portion and the second terminal portion, When the bent portion is viewed from a third direction perpendicular to the first and second directions, the pair of power lines and the pair of signal lines are, The overlapping parts are arranged so as to overlap each other, Including non-overlapping portions arranged offset in the first or second direction, The motor device is characterized in that the inner mold body has a first opening formed at a position facing the non-overlapping portion in the third direction, extending from the outer surface toward each of the pair of power lines and the pair of signal lines.

2. In the motor device according to claim 1, The motor device is characterized in that the inner molded body has a projection that extends in the third direction toward the bent portion and contacts at least one of the pair of power lines and the pair of signal lines from the first or second direction.

3. In the motor device according to claim 1, The motor device is characterized in that the inner mold body has a second opening formed therein at a position facing the parallel portion in the third direction, extending from the outer circumferential surface toward the terminal connector.

4. In the motor device according to claim 3, A motor device characterized in that, in the parallel portion, the power line and the signal line adjacent to each other in the first direction have protrusions formed at positions facing each other.

5. In the motor device according to claim 1, The aforementioned external connection part is, A cylindrical body that protrudes in the second direction so as to surround the second terminal portion, with the protruding end open, The inside of the cylindrical body is provided with a recess that is recessed in the second direction, The motor device is characterized in that the inner mold body has a positioning portion that protrudes from the inside of the cylindrical body in the first or third direction and is exposed to the inside of the recess through the cut-out side surface of the recess.

6. The motor device according to claim 1, An oil pump device comprising an oil pump that pumps oil by the driving force of the electric motor.

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