JP7219138B2 - Motor and valve drive - Google Patents

Description

TECHNICAL FIELD The present invention relates to a motor having terminal housing grooves formed in a terminal block, and a valve body driving device.

2. Description of the Related Art As a motor used in a valve driving device or the like, there has been proposed a structure in which a terminal block is provided so as to overlap an open end of a motor case covering a stator and a terminal pin is held (see Patent Document 1).
In the motor described in Patent Document 1, the terminal pin has two ends protruding from the terminal block, one of which is connected to the coil wire, and the other of which is used for electrical connection with the outside. Here, the terminal pin has a first portion linearly extending along the bottom of the terminal block and a second portion bent from the first portion to one side in the axial direction.

JP 2005-253136 A

In the motor disclosed in Patent Document 1, in order to hold the terminal pin on the terminal block, a structure is conceivable in which the terminal block is provided with terminal receiving grooves for receiving the first portion and the second portion of the terminal pin inside. At this time, in order to securely hold the terminal pin in the terminal accommodating groove, it is preferable to hold the terminal pin by the terminal accommodating groove by matching the groove width of the terminal accommodating groove to the thickness of the terminal pin. However, when the terminal pin is bent, the width of the bent portion is widened, and there is a problem that the terminal pin cannot be smoothly inserted into the terminal receiving groove.

In view of the above problems, it is an object of the present invention to provide a motor and a valve drive device that can smoothly insert a bent terminal pin, including the bent portion, into a terminal accommodating groove of a terminal block. be.

In order to solve the above problems, a motor according to an aspect of the present invention includes a stator, a rotor that faces the stator and is rotatable about an axis, and a motor case that covers the stator from one side in the axial direction. , a first portion linearly extending in the first direction intersecting the axial direction, a second portion bending at an end of the first portion and extending to the one side in the axial direction, and the a terminal pin having a third portion bent at the one end of the second portion in the axial direction and extending in the first direction opposite to the first portion; A first groove that overlaps from the other side of the direction and holds the first portion inside with a bottom located on the other side of the axial direction, and holds the second portion inside with a side surface facing the first direction. and a terminal block formed with a terminal receiving groove including a second groove portion formed with a bent portion between the first portion and the second portion between the first groove portion and the second groove portion. The accommodating portion is characterized by an enlarged groove width.

In the present invention, the terminal pin includes a first portion linearly extending in the first direction and a second portion bending at an end of the first portion and extending to the one side in the axial direction. Corresponding to this structure, the bottom of the terminal block is formed with a first groove for holding the first portion inside, and the side surface of the terminal block in the first direction is formed with a second groove holding the second portion inside. Two grooves are formed. Here, in the terminal pin, the bent portion between the first portion and the second portion swells when bent and the width is partially widened. The portion in which the bent portion is accommodated is an extended portion with a wider groove width. Therefore, the width of the portion of the first groove or the like that holds the portion other than the bent portion of the terminal pin is matched to the thickness of the portion of the terminal pin other than the bent portion, thereby retaining the terminal pin in the terminal receiving groove. The terminal pin can be smoothly inserted into the terminal receiving groove even when the terminal is closed.

In the present invention, it is possible to employ a mode in which a portion of the first groove portion that accommodates a portion adjacent to the bent portion in the first portion to the second groove portion is the expanded portion. According to such a configuration, the terminal pin can be smoothly inserted into the terminal receiving groove.

In the present invention, it is possible to employ an aspect in which the entire second groove portion serves as the extension portion. According to this aspect, even when the bent portion between the second portion and the third portion is thick, the terminal pin can be smoothly inserted into the terminal accommodating groove.

In the present invention, it is possible to employ a mode in which the extension portion reaches from the opening edge of the terminal receiving groove or the vicinity of the opening edge to the groove bottom portion of the terminal receiving groove. According to this aspect, the terminal pin can be smoothly inserted deep into the terminal receiving groove.

In the present invention, the terminal pin has a first end, which is the end opposite to the third portion of the terminal pin, for coil wire connection, and a second end, which is the end of the third portion. A mode in which the part is for external connection can be adopted. According to this aspect, the second end portion for external connection is positioned on one side in the axial direction from the bottom portion of the terminal block. Therefore, the second end can be electrically connected to the outside on one side in the axial direction from the bottom of the terminal block.

In the present invention, a cover arranged so as to cover the first end, and a side surface of the motor case provided so as to cover the terminal block and the cover from the other side in the axial direction, the second and a sealing resin body having a wall surface from which the end protrudes. According to this aspect, the motor case can be sealed from the other side in the axial direction.

The motor according to the present invention can be used in a valve drive device. In this case, the valve drive device includes a rotating shaft provided in the rotor and having a spiral groove formed on the outer peripheral surface, a valve body, and the rotating shaft. and a feed screw mechanism for converting the rotation of the shaft into a force for linearly moving the valve body.

In the present invention, the terminal pin includes a first portion linearly extending in the first direction and a second portion bending at an end of the first portion and extending to the one side in the axial direction. Corresponding to this structure, the bottom of the terminal block is formed with a first groove for holding the first portion inside, and the side surface of the terminal block in the first direction is formed with a second groove holding the second portion inside. Two grooves are formed. Here, in the terminal pin, the bent portion between the first portion and the second portion swells when bent and the width is partially widened. The portion in which the bent portion is accommodated is an extended portion with a wider groove width. Therefore, the width of the portion of the first groove or the like that holds the portion other than the bent portion of the terminal pin is matched to the thickness of the portion of the terminal pin other than the bent portion, thereby retaining the terminal pin in the terminal accommodating groove. The terminal pin can be smoothly inserted into the terminal receiving groove even when the terminal is closed.

FIG. 2 is a perspective view of the valve body driving device to which the present invention is applied, viewed from the side where the valve body is located; FIG. 2 is an exploded perspective view of the valve body driving device shown in FIG. 1 as seen from the side opposite to the side where the valve body is located; Sectional drawing of the valve body drive device shown in FIG. FIG. 2 is an exploded perspective view of the motor shown in FIG. 1; The perspective view which looked at the terminal block etc. which are shown in FIG. 4 from the other side of an axial direction. The bottom view which looked at the terminal block etc. which are shown in FIG. 4 from the other side of an axial direction. The side view which looked at the terminal block etc. which are shown in FIG. 4 from the 2nd end part side. Sectional drawing when cut|disconnecting the terminal block etc. which are shown in FIG. 4 in the position which passes a terminal pin.

An embodiment of the present invention will be described below with reference to the drawings.

(Overall configuration of motor)
FIG. 1 is a perspective view of a valve body drive device 100 to which the present invention is applied, viewed from the side where a valve body 50 is located. FIG. 2 is an exploded perspective view of the valve body driving device 100 shown in FIG. 1 as viewed from the side opposite to the side where the valve body 50 is located. FIG. 3 is a cross-sectional view of the valve body driving device 100 shown in FIG. 4 is an exploded perspective view of the motor 1 shown in FIG. 2. FIG. The valve body driving device 100 shown in FIG. 1 has a valve body 50 and a motor 1. The motor 1 includes a motor case 10 and a stator 20 as described below with reference to FIGS. , a rotor 30, a bobbin 40 having a terminal block 45, a cover 60, a sealing resin body 70, and the like. The valve body driving device 100 drives, for example, a valve body of an air-fuel mixture flow control device for a gasoline engine. For this reason, the motor 1 is required to be highly airtight when attached to the air-fuel mixture flow control device, so the motor 1 is configured as a closed motor.

As shown in FIGS. 2, 3 and 4, the motor case 10 is formed in a cup shape from a magnetic metal such as iron so as to cover the stator 20 from one side La in the axis L direction. More specifically, the motor case 10 includes a body portion 11 cylindrically extending in the direction of the axis L, and an end plate portion formed to close an opening on one side La of the body portion 11 in the direction of the axis L. 12. The motor case 10 has an opening 111 on the other side Lb of the body portion 11 in the direction of the axis L, and the opening 111 is formed with a flange portion 13 protruding radially outward.

In this embodiment, the motor 1 is a stepping motor. The stator 20 is a cylindrical body arranged inside the motor case 10, and includes a coil 21, a bobbin 40, a yoke 23 (outer stator core), and a yoke 24 (inner stator core). The yokes 23 and 24 are metal annular plates, and a plurality of pole teeth 25 bent in the direction of the axis L are formed on the inner peripheral edges at equal intervals in the circumferential direction. The yokes 23 and 24 are arranged opposite to each other so that the pole teeth 25 are alternately arranged in the circumferential direction.

The rotor 30 includes a rotating shaft 31 extending in the direction of the axis L, and a cylindrical permanent magnet 32 fixed to the outer peripheral surface of the rotating shaft 31. The outer peripheral surface of the permanent magnet 32 has N poles and S poles are alternately magnetized. The permanent magnets 32 of the rotor 30 face the pole teeth 25 of the stator 20 radially outward.

A hole 120 is formed in the end plate portion 12 of the motor case 10, and a part of the rotary shaft 31 protrudes from the hole 120 toward one side La in the direction of the axis L. A bearing 97 is held in the hole 120 , and a washer 98 is superimposed on the other side Lb of the bearing 97 in the axis L direction. A portion of the rotary shaft 31 that protrudes from the end plate portion 12 of the motor case 10 serves as an output shaft 39 having a spiral groove 310 formed on its outer peripheral surface.

The bobbin 40 is, for example, a resin molded product in which the yokes 23 and 24 are molded with a synthetic resin, and is constructed by insert injection molding in a mold with the yokes 23 and 24 inserted in the mold. The synthetic resin covers the outer peripheral portions of the yokes 23 and 24 and the portions other than the inner peripheral surfaces of the pole teeth 25, and the coil 21 is wound between the portions (flange portions) overlapping the yokes 23 and 24. space is configured. The stator 20 configured as described above is arranged so that the outer peripheral portions of the yokes 23 and 24 are partially in contact with the body portion 11 of the motor case 10 .

A terminal block 45 is integrally formed at the end of the bobbin 40 on the other side Lb in the direction of the axis L, and the terminal block 45 is provided with a lid portion 453 with which the flange portion 13 of the motor case 10 abuts. . The terminal block 45 holds a plurality of terminal pins 80 extending in a first direction X orthogonal to the direction of the axis L so as to be arranged in parallel in the direction of the axis L and the second direction Y orthogonal to the first direction X. ing. A first end portion 81 that is one end of the terminal pin 80 protrudes from one side surface 451 of the terminal block 45 in the first direction X. As shown in FIG. The first end portion 81 is a coil wire connection terminal to which an end portion (not shown) of the coil wire forming the coil 21 is connected by welding, soldering, or the like, and is covered by the cover 60 supported by the bobbin 40 . It is A second end portion 82 that is the other end of the terminal pin 80 is an external connection terminal projecting from the other side surface 452 of the terminal block 45 in the first direction X, and is used for electrical connection with the outside.

A portion of the terminal block 45 adjacent to the lid portion 453 on one side La in the direction of the axis L is a flange portion 456 , and the flange portion 456 overlaps the inner peripheral surface of the body portion 11 of the motor case 10 . A notch 456a is formed on the side of the flange portion 456 where the cover 60 is located. In addition, a concave portion 453a is formed on the surface of one side La in the direction of the axis L of the lid portion 453 on the side where the cover 60 is positioned.

A portion of the terminal block 45 located on one side La in the direction of the axis L is formed with a bearing hole 46 recessed on the other side Lb in the direction of the axis L. As shown in FIG. A cylindrical bearing 96 is arranged inside the bearing hole 46 , and the bearing 96 supports the outer peripheral surface of the rotating shaft 31 . A thrust support portion 95 made of a metal ball 950 is supported at the bottom of the bearing hole portion 46, and the end portion of the other side Lb in the direction of the axis L of the rotating shaft 31 is supported from the other side Lb in the direction of the axis L. are doing.

(Configuration of valve body 50 and feed screw mechanism 5)
The valve body 50 is a tubular member disposed radially outward of the rotating shaft 31 and has an end portion on one side La in the direction of the axis L closed. More specifically, the valve body 50 includes a distal end portion 56 having a conical outer peripheral surface, a first cylindrical portion 57 extending from the distal end portion 56 to the other side Lb in the direction of the axis L, and the first cylindrical portion 57. and a second cylindrical portion 58 extending from the tip portion 56 to the other side Lb in the direction of the axis L on the inner side. A female thread 580 is formed on the inner peripheral surface of the second cylindrical portion 58 , and the female thread 580 meshes with the spiral groove 310 of the rotary shaft 31 . Therefore, the valve body 50 is configured as a nut member.

Between the first cylindrical portion 57 and the second cylindrical portion 58, a cylindrical guide member 91 is arranged to guide the valve body 50 in the direction of the axis L while preventing the valve body 50 from co-rotating with the rotating shaft 31. It is The guide member 91 is fixed to the end plate portion 12 of the motor case 10 . A coil spring 92 is arranged between the guide member 91 and the first cylindrical portion 57 to prevent backlash between the spiral groove 310 of the rotating shaft 31 and the female thread 580 of the valve body 50 . In this way, the feed screw mechanism 5 that converts the rotation of the rotating shaft 31 into the linear motion of the valve body 50 is configured. contacts the sheet surface formed in the flow path.

(Structure of sealing resin body 70)
In the motor 1 configured as described above, the opening 111 of the motor case 10 in the direction of the axis L is closed by the lid 453 of the terminal block 45 integrally formed on the bobbin 40 and the cover 60. In this state, the terminals are closed. The base 45 , the cover 60 , and the ends of the motor case 10 in the direction of the axis L are covered with a sealing resin body 70 . The sealing resin body 70 has a bottom wall 73 that covers the terminal block 45 and the cover 60 on the other side Lb in the direction of the axis L, and a body portion 72 that covers the terminal block 45, the cover 60 and the motor case 10 from the sides. there is The bottom wall 73 is provided with a convex portion 75 for positioning the motor 1 by coming into contact with the stepped portion or the wall surface of the hole on the device side when the motor 1 is mounted on the device.

A second end portion 82 of the terminal pin 80 protrudes from the wall surface 76 of the sealing resin body 70 . A cylindrical connector housing 78 is provided in the sealing resin body 70 so as to surround the portion where the terminal pin 80 is arranged (around the wall surface 76). ) is inserted to make an electrical connection between the terminal pin 80 and the terminal of the connector. In this form, the connector is a waterproof connector.

The sealing resin body 70 is a resin portion 71 formed so as to cover the terminal block 45, the cover 60, and the ends of the motor case 10 in the direction of the axis L in the final stage of the assembly process, and is made of thermoplastic resin or thermosetting resin. made of flexible resin. In this embodiment, the resin portion 71 is made of thermoplastic resin such as polybutylene terephthalate (PBT). The sealing resin body 70 is firmly fixed to the motor case 10 while completely sealing the opening 111 and the like of the motor case 10 . In this state, most of the motor case 10 is exposed except for the portion located on the other side Lb in the direction of the axis L. As shown in FIG. Therefore, the heat generated by the coil 21 can be efficiently released to the outside through the motor case 10 made of metal. Therefore, insulation failure, thermal deformation of each member, thermal demagnetization of the permanent magnet 32, etc. due to the melting of the insulating coating of the coil 21 can be suppressed. In addition, since the portion covered with resin is reduced, it is possible to reduce the diameter, weight, and cost.

A surface of the body portion 72 of the sealing resin body 70 facing one side La in the direction of the axis L of the motor case 10 serves as a flange surface 77 for attachment to the air-fuel mixture flow control valve. The flange surface 77 is formed by a plane perpendicular to the axial direction of the motor case 10. The motor case 10 is inserted into, for example, an opening of an air-fuel mixture flow control valve, and is attached to the planar mounting surface on the periphery of the opening. By bringing them into close contact, airtightness is maintained via a sealing member such as an O-ring.

(Structure of terminal pin 80, terminal block 45, etc.)
5 is a perspective view of the terminal block 45 and the like shown in FIG. 4 as viewed from the other side Lb in the direction of the axis L. FIG. 6 is a bottom view of the terminal block 45 and the like shown in FIG. 4 as viewed from the other side Lb in the direction of the axis L. FIG. FIG. 7 is a side view of the terminal block 45 and the like shown in FIG. 4 as viewed from the second end portion 82 side. FIG. 8 is a sectional view of the terminal block 45 and the like shown in FIG. 4 cut at a position passing through the terminal pin 80. FIG.

As shown in FIGS. 5, 6, 7 and 8, the terminal pin 80 is a metal square bar, and the cross section of the terminal pin 80 is square. The terminal pin 80 includes a first portion 83 that extends linearly in the first direction X, a second portion 86 that bends at the end of the first portion 83 and extends to one side La in the direction of the axis L, A third portion 87 is bent at the end of one side La of the second portion 86 in the direction of the axis L and extends in the first direction X in the opposite direction to the first portion 83 . Accordingly, the terminal pin 80 has a bend 836 between the first portion 83 and the second portion 86 and a bend 867 between the second portion 86 and the third portion 87 . In this embodiment, the first portion 83 is formed with a crushed portion 830 that partially increases the thickness of the terminal pin 80, and the crushed portion 830 also has a substantially rectangular cross section.

In this embodiment, the end of the first portion 83 opposite to the second portion 86 is the first end 81 for coil wire connection, and the end of the third portion 87 is the third end for external connection. It has two ends 82 . Therefore, the second end portion 82 for external connection is positioned on one side La in the direction of the axis L from the bottom portion 450 of the terminal block 45 . Therefore, the second end portion 82 can be electrically connected to the outside on one side La in the direction of the axis L from the bottom portion 450 of the terminal block 45, so that the dimension of the motor 1 in the direction of the axis L can be reduced. It has the same effect as

The terminal receiving grooves 48 are arranged in parallel in the second direction Y in the terminal block 45 corresponding to the configuration of the terminal pins 80 . In this embodiment, the terminal accommodating groove 48 is a first groove portion that extends in the first direction X at the bottom portion 450 on the other side Lb of the terminal block 45 in the direction of the axis L and holds the first portion 83 of the terminal pin 80 inside. 481 and a second groove portion 482 for holding the second portion 86 inside on the side surface 452 on the side where the second portion 86 of the terminal pin 80 of the terminal block 45 is located. Therefore, when a connector is connected to the second end 82, even if a force is applied to the second end 82 in the first direction X, the second portion 86 of the terminal pin 80 is supported by the bottom of the second groove 482. Therefore, the movement of the terminal pin 80 in the first direction X can be prevented. A portion of the bottom portion of the first groove portion 481 where the crushed portion 830 of the terminal pin 80 is located forms a recessed portion 481a.

A portion of the bottom portion 450 of the terminal block 45 located between the first groove portions 481 is a rib-shaped convex portion 47 , and the convex portion 47 is formed with a groove-shaped concave portion 470 . The recessed portion 470 is divided into a first recessed portion 471 and a second recessed portion 472 , and a wall portion 473 exists between the first recessed portion 471 and the second recessed portion 472 . The wall portion 473 is provided at a position overlapping the thrust support portion 95 shown in FIG. 3 in the direction of the axis L. As shown in FIG.

(Configuration of cover 60)
Referring back to FIG. 4, the cover 60 is a resin molded product, and includes a facing portion 61 facing the side surface 451 of the terminal block 45, and one side La of the facing portion 61 in the direction of the axis L. It has a first projecting portion 62 projecting to La and a second projecting portion 63 projecting from the end of the opposing portion 61 on the other side Lb in the direction of the axis L toward the terminal block 45 . The first projecting portion 62 has a projecting portion 621 projecting to one side La in the direction of the axis L. As shown in FIG. Therefore, when the cover 60 is pushed toward the terminal block 45 so that the projection 621 enters the opening 111 of the motor case 10, the projection 621 fits into the notch 456a of the flange portion 456 of the terminal block 45. The first projecting portion 62 fits into the recessed portion 453 a of the lid portion 453 . In this way, the cover 60 is positioned on the motor case 10 and the terminal block 45 . In this state, the second projecting portion 63 overlaps a portion of the bottom portion 450 of the terminal block 45 from the other side Lb in the direction of the axis L. As shown in FIG.

A wall surface facing the side surface 451 of the facing portion 61 is formed with recesses 611 into which the first ends 81 of the four terminal pins 80 are inserted, respectively, so that the first ends 81 do not come into contact with the cover 60 . It's becoming A plurality of plate portions 64 projecting to one side La in the direction of the axis L are formed on the second projecting portion 63, and the second projecting portion 63 protrudes from the other side Lb in the direction of the axis L to the bottom portion 450 of the terminal block 45. When partially overlapping, the plate portion 64 overlaps the first portion 83 located inside the first groove portion 481 . In this state, other portions of the terminal pins 80 are exposed from the cover 60, but when the sealing resin body 70 is provided, the portions of the terminal pins 80 exposed from the cover 60 are covered with the cover 60. The sealing resin body 70 covers the portion other than the end portion 82 and the second end portion 82 .

(Detailed Configuration of Terminal Receiving Groove 48)
5, 6, 7 and 8, terminal receiving groove 48 corresponds to the thickness (width) of terminal pin 80, except for extension 480, which will be described below. When the terminal pin 80 is inserted into the terminal receiving groove 48, the terminal pin 80 is held.

However, if the terminal pin 80 is bent between the first portion 83 and the second portion 86 when the terminal pin 80 is manufactured, the bent portion 836 will swell due to deformation at the time of bending, and the width will be partially reduced. get wider. Therefore, in this embodiment, the portion that accommodates the bent portion 836 between the first groove portion 481 and the second groove portion 482 is an expanded portion 480 with a wider groove width. More specifically, in the extension portion 480 , concave portions 486 a and 487 a are formed in the side walls 486 and 487 facing each other in the terminal receiving groove 48 so as to be recessed in directions away from each other. wider than the rest of the

Therefore, the groove width of the portion of the first groove portion 481 or the like that holds the portion of the terminal pin 80 other than the bent portion 836 is adjusted to match the thickness of the portion of the terminal pin 80 other than the bent portion 836 so that the terminal accommodating groove 48 can be adjusted. Even when a structure for holding the terminal pin 80 is employed, the terminal pin 80 can be smoothly inserted into the terminal receiving groove 48 .

In this embodiment, the portion of the first groove portion 481 that accommodates the portion adjacent to the bent portion 836 in the first portion 83 to the second groove portion 482 forms the expanded portion 480 . Therefore, the terminal pin 80 can be smoothly inserted into the terminal receiving groove 48 . Furthermore, in this embodiment, the entire second groove portion 482 serves as the expanded portion 480 . Therefore, even when the width of the bent portion 867 between the second portion 86 and the third portion 87 is wide, the terminal pin 80 can be smoothly inserted into the terminal accommodating groove 48 .

Further, the extended portion 480 reaches the groove bottom portion 489 from the opening edge 488 of the terminal receiving groove 48 or from the vicinity of the opening edge 488 . Therefore, the terminal pin 80 can be smoothly inserted to the groove bottom 489 of the terminal receiving groove 48 .

(Other embodiments)
In the above embodiment, the case where the bent portion 836 is provided on the second end portion 82 side of the first portion 83 is illustrated, but the bent portion 836 is provided on the first end portion 81 side of the first portion 83 . The present invention may be applied when is provided. In this case, an extended portion 480 is provided on the side surface 451 of the terminal receiving groove 48 .

Further, the bent portion 836 may be provided on the second end portion 82 side of the first portion 83, and the bent portion 836 may be provided on the first end portion 81 side of the first portion 83. In this case, an expanded portion 480 is provided in a portion of the terminal accommodating groove 48 that accommodates the bent portion 836 on the first end portion 81 side and the bent portion 836 on the second end portion 82 side.

Although the motor 1 is a stepping motor in the above embodiment, the present invention may be applied to other types of motors. Although the present invention is applied to the motor 1 having the encapsulation resin body 70 in the above embodiment, the present invention may be applied to the motor 1 not provided with the encapsulation resin body 70 .

DESCRIPTION OF SYMBOLS 1... Motor, 5... Feed screw mechanism, 10... Motor case, 20... Stator, 30... Rotor, 31... Rotary shaft, 32... Permanent magnet, 39... Output shaft, 40... Bobbin, 45... Terminal block, 48... Terminal Housing groove 50 Valve body 60 Cover 70 Sealing resin body 80 Terminal pin 81 First end 82 Second end 83 First part 86 Second part 87...Third portion 91...Guide member 92...Coil spring 100...Valve drive device 310...Spiral groove 450...Bottom 451, 452...Side surface 480...Expansion part 481...First groove part 482... Second groove 486, 487 Side wall 488 Opening edge 489 Groove bottom 580 Female thread 836, 867 Bent portion X First direction Y Second direction La One side Lb other side

Claims (7)

a stator;
a rotor facing the stator and rotatable about an axis;
a motor case that covers the stator from one side in the axial direction;
A first portion linearly extending in the first direction intersecting the axial direction, a second portion bending at an end of the first portion and extending to the one side in the axial direction, and the a terminal pin including a third portion that is bent at one end of the two portions in the axial direction and extends in the first direction opposite to the first portion;
A first groove portion that overlaps the motor case from the other side in the axial direction and holds the first portion inside at a bottom located on the other side in the axial direction, and a side surface facing the first direction that holds the first portion. a terminal block formed with a terminal receiving groove including a second groove that holds the two parts inside;
has
A portion between the first groove portion and the second groove portion that accommodates the bent portion between the first portion and the second portion is an expanded portion with a wider groove width. motor. 2. The motor of claim 1, wherein
A motor according to claim 1, wherein a portion of the first groove portion that accommodates a portion adjacent to the bent portion in the first portion to the second groove portion is the expanded portion. 3. The motor of claim 2, wherein
A motor, wherein the entire second groove portion serves as the extension portion. In the motor according to any one of claims 1 to 3,
The motor according to claim 1, wherein the extended portion reaches from an opening edge of the terminal accommodating groove or a vicinity of the opening edge to a groove bottom portion of the terminal accommodating groove. In the motor according to any one of claims 1 to 4,
The terminal pin has a first end, which is the end opposite to the third portion of the terminal pin, for coil wire connection, and a second end, which is the end of the third portion, for external connection. A motor, characterized in that it is for A motor according to claim 5, wherein
a cover arranged to cover the first end;
a sealing resin body provided so as to cover the terminal block and the cover from the other side in the axial direction, covering a side surface of the motor case, and including a wall surface from which the second end protrudes;
A motor comprising: A valve drive device comprising the motor according to any one of claims 1 to 6,
a rotating shaft provided on the rotor and having a spiral groove formed on an outer peripheral surface thereof;
a valve body;
a feed screw mechanism that converts the rotation of the rotary shaft into a force that directly moves the valve body;
A valve body driving device, comprising:

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