JP2020167826A - Motor, and valve body driving device - Google Patents

Abstract

To provide a motor and a valve body driving device capable of smoothly inserting a bent terminal pin into a terminal storing groove of a terminal block including the bent portion.SOLUTION: In a motor, a terminal pin 80 held in a terminal storing 48 of a terminal block 45 includes a first portion 83 which extends linearly in a first direction X and a second portion 86 that is bent from the first portion 83 toward one side La of an axis L direction, and therefore, a bent portion 836 is included between the first portion 83 and the second portion 86. Although the bent portion 836 has a wide bulge when bent, in the terminal storing groove 48, there is an expansion portion 480 of which groove width is wider between a first groove portion 481 for storing the first portion 83 and a second groove portion 482 for storing the second portion 86. Therefore, even when the groove width of the portion of the first groove portion 481 or the like that holds the portion other than the bent portion 836 of the terminal pin 80 is adjusted to the width of the terminal pin 80, the terminal pin 80 can be smoothly inserted into the terminal storing groove 48.SELECTED DRAWING: Figure 5

Description

The present invention relates to a motor in which a terminal accommodating groove is formed in a terminal block, and a valve body driving device.

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

Japanese Unexamined Patent Publication No. 2005-253136

In the motor described 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 a terminal accommodating groove for accommodating the first portion and the second portion of the terminal pin inside. At that time, in order to surely hold the terminal pin in the terminal accommodating groove, it is preferable to hold the terminal pin by the terminal accommodating groove by making the groove width of the terminal accommodating groove correspond to the thickness of the terminal pin. However, when the terminal pin is bent, there is a problem that the width of the bent portion is widened and the terminal pin cannot be smoothly inserted into the terminal accommodating groove.

In view of the above problems, an object of the present invention is to provide a motor and a valve body drive device capable of smoothly inserting a bent terminal pin into a terminal accommodating groove of a terminal block including a bent portion. is there.

In order to solve the above problems, the motor according to one aspect of the present invention includes a stator, a rotor that faces the stator and can rotate around the axis, and a motor case that covers the stator from one side in the axial direction. A first portion that intersects the axial direction and extends linearly in the first direction, a second portion that bends at the end of the first portion and extends to the one side in the axial direction, and the said. A terminal pin having a third portion that is bent at one end of the second portion in the axial direction and extends on the opposite side of the first portion in the first direction, and the axis on the motor case. A first groove portion that overlaps from the other side in the direction and holds the first portion inward at the bottom portion located on the other side in the axial direction, and a side surface facing the first direction holds the second portion inward. It has a terminal block in which a terminal accommodating groove including a second groove portion is formed, and a bent portion between the first groove portion and the second groove portion is formed between the first portion and the second portion. The accommodating portion is characterized in that it is an expansion portion having a wide groove width.

In the present invention, the terminal pin includes a first portion that extends linearly in the first direction and a second portion that bends at the end of the first portion and extends to the one side in the axial direction. Corresponding to such a structure, a first groove portion for holding the first portion inward is formed on the bottom portion of the terminal block, and a first groove portion for holding the second portion inward is formed on the side surface in the first direction of the terminal block. Two grooves are formed. Here, in the terminal pin, the bent portion between the first portion and the second portion bulges when bent and the width is partially widened, but between the first groove portion and the second groove portion. The portion accommodating the bent portion is an extended portion having a wide groove width. For this reason, the structure is such that the terminal pin is held by the terminal accommodating groove by matching the groove width of the portion of the first groove portion or the like that holds the portion other than the bent portion of the terminal pin to the thickness of the portion other than the bent portion of the terminal pin. Even if this is the case, the terminal pin can be smoothly inserted into the terminal accommodating groove.

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

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

In the present invention, it is possible to adopt an embodiment in which the expansion portion reaches from the opening edge of the terminal accommodating groove or the vicinity of the opening edge to the groove bottom portion of the terminal accommodating groove. According to this aspect, the terminal pin can be smoothly inserted all the way into the terminal accommodating groove.

In the present invention, the terminal pin has a first end, which is an end opposite to the third portion of the terminal pin, for connecting a coil wire, and a second end, which is an end of the third portion. A mode in which the unit is for external connection can be adopted. According to this aspect, the second end portion for external connection is located on one side in the axial direction from the bottom portion of the terminal block. Therefore, since it is possible to electrically connect the second end portion to the second end portion on one side in the axial direction from the bottom portion of the terminal block, the same effect as shortening the axial dimension of the motor can be obtained.

In the present invention, a cover arranged so as to cover the first end portion, and the terminal block and the cover are provided so as to cover the other side in the axial direction to cover the side surface of the motor case, and the second. An embodiment having a sealing resin body having a wall surface having a protruding end portion can be adopted. According to such an 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 for a valve body driving device. In this case, the valve body driving device is provided on the rotor and has a rotating shaft having a spiral groove formed on an outer peripheral surface, a valve body, and the rotation. It is characterized by having a feed screw mechanism that converts the rotation of the shaft into a force that directly moves the valve body.

In the present invention, the terminal pin includes a first portion that extends linearly in the first direction and a second portion that bends at the end of the first portion and extends to the one side in the axial direction. Corresponding to such a structure, a first groove portion for holding the first portion inward is formed on the bottom portion of the terminal block, and a first groove portion for holding the second portion inward is formed on the side surface in the first direction of the terminal block. Two grooves are formed. Here, in the terminal pin, the bent portion between the first portion and the second portion bulges when bent and the width is partially widened, but between the first groove portion and the second groove portion. The portion accommodating the bent portion is an extended portion having a wide groove width. For this reason, the structure is such that the terminal pin is held by the terminal accommodating groove by matching the groove width of the portion of the first groove portion or the like that holds the portion other than the bent portion of the terminal pin to the thickness of the portion other than the bent portion of the terminal pin. Even if this is the case, the terminal pin can be smoothly inserted into the terminal accommodating groove.

The perspective view of the valve body drive device to which this invention is applied seen from the side where the valve body is located. An exploded perspective view of the valve body driving device shown in FIG. 1 as viewed from the side opposite to the side where the valve body is located. FIG. 3 is a cross-sectional view of the valve body driving device shown in FIG. An exploded perspective view of the motor shown in FIG. A perspective view of the terminal block and the like shown in FIG. 4 as viewed from the other side in the axial direction. Bottom view of the terminal block and the like shown in FIG. 4 as viewed from the other side in the axial direction. A side view of the terminal block and the like shown in FIG. 4 as viewed from the side of the second end portion. FIG. 5 is a cross-sectional view when the terminal block or the like shown in FIG. 4 is cut at a position passing through the terminal pin.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

(Overall configuration of motor)
FIG. 1 is a perspective view of a valve body driving device 100 to which the present invention is applied as viewed from the side where the 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. FIG. 4 is an exploded perspective view of the motor 1 shown in FIG. The valve body driving device 100 shown in FIG. 1 includes a valve body 50 and a motor 1, and the motor 1 includes a motor case 10 and a stator 20 as described below with reference to FIGS. 2 to 4. , A bobbin 40 having a rotor 30, a terminal block 45, a cover 60, a sealing resin body 70, and the like. The valve body driving device 100 drives, for example, the valve body of the air-fuel mixture flow rate adjusting device of a gasoline engine. Therefore, since the motor 1 is required to have high airtightness when attached to the air-fuel mixture flow rate adjusting device, 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 by 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 has an end plate portion formed so as to close the opening of the body portion 11 extending cylindrically in the axis L direction and one side La of the body portion 11 in the axis L direction. It has 12 and. In the motor case 10, the other side Lb of the body portion 11 in the axis L direction is an opening 111, and the opening 111 is formed with a flange portion 13 projecting outward in the radial direction.

In this embodiment, the motor 1 is a stepping motor. The stator 20 is a tubular body arranged in 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 plate members, and a plurality of polar teeth 25 bent in the L direction of the axis are formed on the inner peripheral edge at equal intervals in the circumferential direction. The yokes 23 and 24 are arranged so as to face each other so that the polar teeth 25 are alternately arranged in the circumferential direction, and two sets of the yokes 23 and 24 are arranged in the L direction of the axis.

The rotor 30 includes a rotating shaft 31 extending in the L direction of the axis and a cylindrical permanent magnet 32 fixed to the outer peripheral surface of the rotating shaft 31, and the outer peripheral surface of the permanent magnet 32 is provided in the circumferential direction. The north and south poles are magnetized alternately. Of the rotor 30, the permanent magnet 32 faces the pole teeth 25 of the stator 20 on the outer side in the radial direction.

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

The bobbin 40 is, for example, a resin molded product obtained by molding the yokes 23 and 24 with a synthetic resin, and is configured by insert injection molding in the 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 portion excluding the inner peripheral surface of the polar teeth 25, and the coil 21 is wound between the portions (flange portions) overlapping the yokes 23 and 24. The space to be used is configured. The stator 20 configured in this way 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 other side Lb of the bobbin 40 in the axis L direction, and the terminal block 45 is provided with a lid portion 453 with which the flange portion 13 of the motor case 10 abuts. .. A plurality of terminal pins 80 extending in the first direction X orthogonal to the axis L direction are held in the terminal block 45 so as to be parallel to the second direction Y orthogonal to the axis L direction and the first direction X. ing. The first end 81, which is one end of the terminal pin 80, projects from one side surface 451 of the first direction X of the terminal block 45. The first end 81 is a terminal for connecting a coil wire to which the end (not shown) of the coil wire constituting the coil 21 is connected by welding, soldering or the like, and is covered by a cover 60 supported by the bobbin 40. It has been done. The second end 82, which is the other end of the terminal pin 80, is a terminal for external connection protruding from the other side surface 452 of the first direction X of the terminal block 45, and is used for electrical connection with the outside.

In the terminal block 45, a portion adjacent to the lid portion 453 on one side La in the axis L direction 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. Further, a recess 453a is formed on the surface of the lid portion 453 on one side La in the axis L direction on the side where the cover 60 is located.

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

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

A tubular guide member 91 that guides the valve body 50 in the axis L direction is arranged between the first tubular portion 57 and the second tubular portion 58 while preventing the valve body 50 from rotating with the rotating shaft 31. Has been done. The guide member 91 is fixed to the end plate portion 12 of the motor case 10. A coil spring 92 for preventing backlash between the spiral groove 310 of the rotating shaft 31 and the female screw 580 of the valve body 50 is arranged between the guide member 91 and the first tubular portion 57. 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, and when the valve body 50 is moved to one side La in the axis L direction, the tip portion 56 The outer peripheral surface of the surface abuts on the sheet surface formed in the flow path.

(Structure of sealing resin body 70)
In the motor 1 configured in this way, the opening 111 in the axis L direction of the motor case 10 is closed by the lid portion 453 of the terminal block 45 integrally formed with the bobbin 40 and the cover 60, and in this state, the terminals The ends of the base 45, the cover 60, and the motor case 10 in the axis L direction are covered with the 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 axis L direction, and a body portion 72 that covers the terminal block 45, the cover 60, and the motor case 10 from the side surface. There is. The bottom wall 73 is provided with a convex portion 75 that abuts on the wall surface of a step portion or a hole on the device side to position the motor 1 when the motor 1 is mounted on the device.

The second end 82 of the terminal pin 80 projects from the wall surface 76 of the sealing resin body 70. The sealing resin body 70 is provided with a tubular connector housing 78 so as to surround the portion where the terminal pins 80 are arranged (around the wall surface 76), and the connector housing 78 is provided with a connector (not shown). ) Is inserted to make an electrical connection between the terminal pin 80 and the terminal of the connector. In this embodiment, 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 end portion of the motor case 10 in the axis L direction at the final stage of the assembly process, and is a thermoplastic resin or thermosetting. It is made of sex resin. In this embodiment, the resin portion 71 is made of a thermoplastic resin such as polybutylene terephthalate (PBT). The sealing resin body 70 is firmly fixed to the motor case 10 in a state where the opening 111 and the like of the motor case 10 are completely sealed. In this state, most of the motor case 10 is exposed except for the portion located on the other side Lb in the axis L direction. Therefore, the heat generated in the coil 21 can be efficiently released to the outside through the metal motor case 10. Therefore, it is possible to suppress insulation defects caused by melting the insulating coating of the coil 21, thermal deformation of each member, thermal demagnetization of the permanent magnet 32, and the like. Further, since the portion covered with the resin is reduced, the diameter can be reduced, the weight can be reduced, and the cost can be reduced.

In the body portion 72 of the sealing resin body 70, the surface of the motor case 10 facing one side La in the axis L direction is a flange surface 77 for attaching to the air-fuel mixture flow rate adjusting valve. The flange surface 77 is formed by a plane orthogonal to the axial direction of the motor case 10, and the motor case 10 is inserted into, for example, an opening of an air-fuel mixture flow control valve, and is formed on a flat mounting surface on the periphery of the opening. By bringing them into close contact with each other, airtightness is maintained through a sealing member such as an O-ring.

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

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 a quadrangle. The terminal pin 80 includes a first portion 83 that extends linearly in the first direction X, and a second portion 86 that bends at the end of the first portion 83 and extends to one side La in the axis L direction. The second portion 86 is provided with a third portion 87 that is bent at the end of one side La in the axis L direction and extends in the first direction X on the side opposite to the first portion 83. Therefore, the terminal pin 80 has a bent portion 836 between the first portion 83 and the second portion 86, and a bent portion 867 between the second portion 86 and the third portion 87. In the present 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 quadrangular 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 first end for external connection. It has two ends 82. Therefore, the second end 82 for external connection is located on one side La in the axis L direction from the bottom 450 of the terminal block 45. Therefore, since it is possible to electrically connect the second end 82 to the outside at one side La in the axis L direction from the bottom 450 of the terminal block 45, the dimension of the motor 1 in the axis L direction is shortened. It has the same effect as.

Corresponding to the configuration of the terminal pin 80, the terminal accommodating groove 48 is parallel to the second direction Y in the terminal block 45. In the present embodiment, the terminal accommodating groove 48 is a first groove portion extending in the first direction X at the bottom portion 450 of the other side Lb of the terminal block 45 in the axis L direction and holding the first portion 83 of the terminal pin 80 inward. It has 481 and a second groove portion 482 that holds the second portion 86 inward 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 connecting the connector to the second end 82, the second portion 86 of the terminal pin 80 is supported by the bottom of the second groove 482 even if a force in the first direction X is applied to the second end 82. Therefore, it is possible to prevent the terminal pin 80 from moving in the first direction X. Of the bottom of the first groove 481, the portion where the crushed portion 830 of the terminal pin 80 is located is a recess 481a.

The 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 recess 470 is divided into a first recess 471 and a second recess 472, and a wall portion 473 exists between the first recess 471 and the second recess 472. The wall portion 473 is provided at a position where it overlaps the thrust support portion 95 shown in FIG. 3 in the axis L direction.

(Structure of cover 60)
Again, in FIG. 4, the cover 60 is a resin molded product, and the facing portion 61 facing the side surface 451 of the terminal block 45 and one side of the facing portion 61 on one side La in the axis L direction to one side in the axis L direction. It has a first protruding portion 62 protruding from La, and a second protruding portion 63 protruding toward the terminal block 45 from the end of the other side Lb of the facing portion 61 in the axis L direction. The first protruding portion 62 has a convex portion 621 protruding on one side La in the axis L direction. Therefore, when the cover 60 is pushed toward the terminal block 45 so that the convex portion 621 is inside the opening 111 of the motor case 10, the convex portion 621 fits into the notch 456a of the flange portion 456 of the terminal block 45. The first protruding portion 62 fits into the recess 453a 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 protruding portion 63 overlaps a part of the bottom portion 450 of the terminal block 45 from the other side Lb in the axis L direction.

The wall surface of the facing portion 61 facing the side surface 451 is formed with recesses 611 into which the first end portions 81 of the four terminal pins 80 are inserted, so that the first end portion 81 does not come into contact with the cover 60. It has become. A plurality of plate portions 64 protruding from one side La in the axis L direction are formed in the second protrusion 63, and the second protrusion 63 is formed from the other side Lb in the axis L direction to the bottom 450 of the terminal block 45. When partially overlapped, the plate portion 64 overlaps the first portion 83 located inside the first groove portion 481. In this state, the other parts of the terminal pin 80 are exposed from the cover 60, but when the sealing resin body 70 is provided, the portion of the terminal pin 80 exposed from the cover 60 is covered with the cover 60. The portion except the second end portion 82 is covered with the sealing resin body 70.

(Detailed configuration of terminal accommodating groove 48)
Again, in FIGS. 5, 6, 7 and 8, the terminal accommodating groove 48 corresponds to the thickness (width) of the terminal pin 80, except for the expansion portion 480 described below, and the terminal accommodating groove 48 When the terminal pin 80 is inserted into the terminal pin 80, the terminal pin 80 is held in the terminal accommodating groove 48.

However, when the terminal pin 80 is manufactured, if it is bent between the first portion 83 and the second portion 86, the bent portion 836 is bulged due to the deformation at the time of bending, and the width is partially widened. Become wider. Therefore, in the present embodiment, the portion between the first groove portion 481 and the second groove portion 482 that accommodates the bent portion 836 is an expansion portion 480 having a wide groove width. More specifically, in the expansion portion 480, recesses 486a and 487a recessed in the terminal accommodating grooves 48 in the direction of being separated from each other are formed in the side walls 486 and 487 facing each other. It is wider than the other parts.

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 the thickness of the portion of the terminal pin 80 other than the bent portion 836 so that the terminal accommodating groove 48 is formed. Even when a structure for holding the terminal pin 80 is adopted, the terminal pin 80 can be smoothly inserted into the terminal accommodating groove 48.

In the present embodiment, of the first groove portion 481, the portion from the portion accommodating the portion adjacent to the bent portion 836 in the first portion 83 to the second groove portion 482 is the expansion portion 480. Therefore, the terminal pin 80 can be smoothly inserted into the terminal accommodating groove 48. Further, in the present embodiment, the entire second groove portion 482 is an expansion 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 expansion portion 480 reaches from the vicinity of the opening edge 488 or the opening edge 488 of the terminal accommodating groove 48 to the groove bottom portion 489. Therefore, the terminal pin 80 can be smoothly inserted to the groove bottom portion 489 of the terminal accommodating groove 48.

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

Further, a bent portion 836 may be provided on the side of the second end 82 with respect to the first portion 83, and a bent portion 836 may be provided on the side of the first end 81 with respect to the first portion 83. In this case, the extension portion 480 is provided in the portion of the terminal accommodating groove 48 accommodating the bent portion 836 on the side of the first end portion 81 and the bent portion 836 on the side of the second end portion 82.

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

1 ... motor, 5 ... feed screw mechanism, 10 ... motor case, 20 ... stator, 30 ... rotor, 31 ... rotating shaft, 32 ... permanent magnet, 39 ... output shaft, 40 ... bobbin, 45 ... terminal block, 48 ... terminal Accommodating 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 ... 3rd part, 91 ... Guide member, 92 ... Coil spring, 100 ... Valve drive device, 310 ... Spiral groove, 450 ... Bottom, 451, 452 ... Side surface, 480 ... Expansion part, 481 ... 1st groove part, 482 ... 2nd groove, 486, 487 ... Side wall, 488 ... Opening edge, 489 ... Groove bottom, 580 ... Female screw, 836, 867 ... Bending part, X ... 1st direction, Y ... 2nd direction, La ... One side, Lb ... The other side

Claims (7)

With the stator
A rotor that faces the stator and can rotate around the axis,
A motor case that covers the stator from one side in the axial direction,
A first portion that intersects the axial direction and extends linearly in the first direction, a second portion that bends at the end of the first portion and extends to the one side in the axial direction, and the first portion. A terminal pin having a third portion that is bent at one end of the two portions in the axial direction and extends in the first direction to the opposite side of 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 inward at a bottom portion located on the other side in the axial direction, and a side surface facing the first direction. A terminal block with a terminal accommodating groove including a second groove that holds the two parts inside,
Have,
The 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 expansion portion having a wide groove width. motor. In the motor according to claim 1,
A motor characterized in that 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 expansion portion. In the motor according to claim 2,
A motor characterized in that the entire second groove portion is the expansion portion. In the motor according to any one of claims 1 to 3, the motor
The motor is characterized in that the expansion portion reaches from the opening edge of the terminal accommodating groove or the vicinity of the opening edge to the groove bottom portion of the terminal accommodating groove. In the motor according to any one of claims 1 to 4.
In the terminal pin, the first end portion, which is the end portion of the terminal pin opposite to the third portion, is for coil wire connection, and the second end portion, which is the end portion of the third portion, is externally connected. A motor characterized by being for use. In the motor according to claim 5,
A cover arranged so as to cover the first end portion,
A sealing resin body provided so as to cover the terminal block and the cover from the other side in the axial direction, cover the side surface of the motor case, and have a wall surface on which the second end portion protrudes.
A motor characterized by having. A valve body driving device including 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 the outer peripheral surface,
With the valve body
A feed screw mechanism that converts the rotation of the rotating shaft into a force that causes the valve body to move linearly,
A valve body driving device characterized by having.

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