JP5519476B2 - Actuator - Google Patents

Description

  The present invention relates to an actuator, for example, an actuator that can be incorporated in a door latch device.

  A door latch device in which an actuator is incorporated is known. This door latch device is used for a trunk door or a hatchback door of a vehicle. The door latch device includes a hook (fork) for holding a striker provided on the vehicle body side, a ratchet (claw) that engages with the hook and holds the striker in a locked state, and the ratchet by the driving force of the motor. And an actuator to be operated.

  The actuator includes a motor, a worm wheel that is rotated by the motor, and a cam that is provided on the worm wheel. When the motor operates and the output shaft of the motor rotates, the worm wheel and the cam formed on the worm wheel rotate. The cam then operates the ratchet to release the engagement with the hook. As a result, the holding of the striker by the hook is released, and the door can be opened.

  In the door lock device shown in Patent Document 1, a method of integrally molding a motor motor terminal of an actuator into a case by insert molding is employed. However, when the terminal is attached to the case by insert molding, an operation member such as a pin for pressing the terminal is required for the mold for molding the case, and the manufacturing cost is increased due to an increase in the mold cost.

Japanese Utility Model Publication No. 06-066555

  An object of the present invention is to provide an actuator capable of easily fixing a terminal to a case and reducing manufacturing costs.

  As means for solving the above problems, the actuator of the present invention includes a motor casing, a power supply terminal, a motor including a rotating shaft protruding from a front end portion of the motor casing, and one end connected to the power supply terminal of the motor. A terminal provided with a first tab-like portion provided at the other end and extending in a direction opposite to the protruding direction of the rotating shaft, and a step portion extending in a direction intersecting with the extending direction of the first tab-like portion And a motor housing portion housing the motor casing, and a connector provided with an insertion hole through which the tip of the first tab-shaped portion of the terminal is inserted in the closing portion opposite to the opening to which the counterpart connector is connected The terminal is fixed by sandwiching the step portion between a case comprising a portion and a part of the case and the motor casing housed in the motor housing portion. And so and a Minaru clamping unit.

  According to this configuration, the first tab-like portion of the terminal is inserted into the insertion hole from the motor housing portion side, and the terminal step portion is sandwiched between the terminal pinching portion of the case and the motor casing, whereby the power feeding terminal of the motor The terminal connected to can be easily fixed to the case.

  The motor casing is accommodated in the motor accommodating portion in a posture in which the rotating shaft protrudes in a direction away from the closing portion, and the terminal holding portion is located between the rear end portion of the motor casing and the step of the terminal. It is preferable to sandwich the part.

  According to this configuration, by pinching the stepped portion of the terminal between the rear end portion of the motor housed in the motor housing portion and the terminal holding portion in a posture in which the rotation shaft protrudes in a direction away from the closing portion, The terminal connected to the power supply terminal of the motor can be easily fixed to the case.

  The terminal includes, at one end, a second tab-shaped portion that extends in the extending direction of the step portion and is connected to the power supply terminal of the motor, and includes the second tab-shaped portion and one end of the step portion. It is preferable that the base part of the said 1st tab-like part is connected to the other end of the said step part.

  According to this configuration, the first tab-like portion is inserted into the insertion hole of the closing portion, the base portion is disposed so as to extend in the extending direction of the first tab-like portion, and the second portion extending in the extending direction of the step portion. With the tab-shaped portion connected to the power supply terminal of the motor, the stepped portion can be brought into contact with the terminal holding portion. Thereby, the step part of a terminal can be clamped between a motor casing and a terminal clamping part, and the terminal connected with the electric power feeding terminal of the motor can be easily fixed to a case.

  It is preferable that a concave portion for accommodating the base portion of the terminal is formed in the bottom wall of the motor accommodating portion.

  According to this configuration, the first tab-like portion of the terminal can be easily inserted into the motor accommodating portion so as to correspond to the insertion hole. Further, even in the assembled state, it is possible to prevent the motor and the base of the terminal accommodated in the recess from interfering with each other, and the motor can be reliably accommodated in the motor accommodating portion. Therefore, the terminal can be fixed to the case easily and reliably.

  The case is in contact with the front end portion of the motor casing housed in the motor housing portion, and maintains the state where the rear end portion of the motor casing holds the stepped portion between the terminal holding portion and the case. As described above, it is preferable to include a restricting portion for restricting the displacement of the motor casing.

  According to this structure, the state which clamped the step part between the rear-end part of the motor casing and the terminal clamping part can be maintained. Therefore, the terminal can be fixed to the case easily and reliably.

  The case preferably includes a pair of holding plate portions that sandwich a cylindrical portion provided at the rear end portion of the motor casing.

  According to this configuration, since the cylindrical portion of the rear end portion of the motor casing can be sandwiched between the pair of holding plate portions without rattling, the motor can be reliably fixed to the motor housing portion. Therefore, the terminal can be fixed to the case easily and reliably.

  The case preferably includes a terminal guide portion extending in a protruding direction of the rotary shaft from a hole edge of the insertion hole on the motor housing portion side of the closing portion.

  According to this configuration, the first tab-like portion extending in the direction opposite to the protruding direction of the rotating shaft can be easily and reliably guided to the insertion hole by the terminal guide portion.

  It is preferable that the terminal guide part is connected to the terminal holding part.

  According to this structure, a terminal guide part and a terminal clamping part can be formed integrally and compactly.

  The motor casing includes a barrel whose one end is an open end and an end bell cap that closes the open end of the barrel, and the stepped portion of the terminal is sandwiched between the end bell cap and the terminal clamping portion, The case and the end bell cap are preferably made of an insulating material.

  According to this structure, the step part of a terminal can be clamped between an end bell cap and a terminal clamping part. Therefore, the terminal connected to the power supply terminal of the motor can be easily fixed to the case. Moreover, since the case and the end bell cap are made of an insulating material, it is possible to prevent a short circuit between the terminal and the case or the end bell cap.

  According to the present invention, the first tab-like portion of the terminal is inserted into the insertion hole from the motor housing portion side, and the terminal step portion is sandwiched between the terminal sandwiching portion of the case and the motor casing, whereby the power feeding terminal of the motor The terminal connected to can be easily fixed to the case. Therefore, a dedicated separate member for fixing the terminal 31 is not required, and the terminal 31 can be fixed to the case easily and at low cost. Further, when the mating connector is connected to the connector portion, the terminal can be prevented from moving backward in the connector portion.

The figure which shows the latch apparatus with which the actuator concerning this invention was integrated. The figure which shows the latch apparatus with which the actuator concerning this invention which does not illustrate the case and the cover was incorporated. The top view which shows the actuator concerning this invention. IV-IV sectional view taken on the line of FIG. VV sectional view taken on the line of FIG. The figure which shows the motor of the actuator concerning this invention. The top view which shows the case of the actuator concerning this invention. VIII-VIII sectional view taken on the line of FIG. Side view of the terminal. The top view of a terminal. Front view of the terminal. The figure which shows the assembly | attachment procedure to the case of a terminal. The figure which shows the assembly | attachment procedure to the case of a terminal. The figure which shows the assembly | attachment procedure to the case of a terminal. The figure which shows the assembly | attachment procedure of the motor to the case with which the terminal was mounted | worn in the predetermined position. The figure which shows the assembly | attachment procedure of the motor to the case with which the terminal was mounted | worn in the predetermined position. The figure which shows the assembly | attachment procedure of the motor to the case with which the terminal was mounted | worn in the predetermined position. The figure which shows the insulating sheet pinched | interposed between the terminal and the end bell cap.

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

  FIG. 1 shows a latch device 11 incorporating an actuator 10 according to the present invention. The latch device 11 is attached to one of an opening / closing body such as a trunk door or a hatch back door and a vehicle body, and a striker (not shown) disposed on the other is detachably locked, thereby closing the door. Is to maintain.

  The latch device 11 includes a casing 15 in which an opening of a base 12 is covered with a cover 13 and a case 14.

  As shown in FIG. 2, a latch mechanism 18 having a fork 16 and a claw 17 is provided on the base 12 portion covered with the cover 13.

  As shown in FIG. 1, the base 10 covered with the case 14 is detachably mounted with an actuator 10 that can be pressed by an operation receiving portion 28 of another member by an operation portion 23 described later. FIG. 3 shows an actuator 10 according to the present invention. In this actuator 10, a case 19 contains a motor 19 and a worm wheel 22 that meshes with a worm 21 attached to a rotating shaft 20 of the motor 19. On the outer periphery of the worm wheel 22, a cam portion (operation portion) 23 that protrudes radially outward is provided. The actuator 10 will be described in detail later.

  In the latch device 11, when the door is closed, the striker enters the locking groove 24 of the fork 16, and the fork 16 rotates counterclockwise. As shown in FIG. 2, when the locking groove 24 of the fork 16 is positioned substantially perpendicular to the insertion groove 25 of the base 12, the locking portion 27 of the claw 17 is engaged with the locking step portion 26 of the fork 16. Match. Thereby, the fork 16 is maintained in the latch position.

  In this latched state, when an opening operation is performed by an in-vehicle switch that is a latch opening operation member, the controller detects the switch operation, and the controller energizes the motor 19 of the actuator 10 to rotate it. If it does so, the worm wheel 22 will rotate counterclockwise, the cam part 23 will press the operation receiving part 28 of the claw 17, and the claw 17 will rotate clockwise. As a result, the locking between the locking step portion 26 of the fork 16 and the locking portion 27 of the claw 17 is released. Then, when the fork 16 rotates clockwise, the striker can be unlatched. Note that the controller releases the power supply to the motor 19 when a predetermined time has elapsed. Then, the worm wheel 22 rotates clockwise by the restoring force of an internal return spring (not shown) and returns to the initial position before the rotation.

  The latch device 11 further includes an open lever 29 that manually releases the latch mechanism 18. The open lever 29 is also attached so as to be coaxial with the worm wheel 22. An operation handle (not shown) is provided at one end of the open lever 29, and an operation unit 30 is provided at the other end. When the operation handle is opened, the open lever 29 is rotated counterclockwise, and the operation unit 30 presses the operation receiving unit 28 of the claw 17. As a result, the latch mechanism 18 is released in the same manner as the actuator 10.

  The actuator 10 according to the present invention will be described. In the following description, as shown in FIG. 3, when the opening of the case 14 of the actuator 10 is viewed from the front, the length direction is a direction parallel to the rotating shaft 20 of the motor 19. The width direction is a direction orthogonal to the rotation axis 20 of the motor 19 on the paper surface. The height (depth) direction is a direction orthogonal to the paper surface, and the front side of the paper surface is up and the paper surface side is down.

  As shown in FIG. 3, the actuator 10 includes a motor 19, a case 14, a pair of terminals 31 </ b> A and 31 </ b> B, and a worm gear 32 including a worm 21 and a worm wheel 22. 4 is a cross-sectional view taken along line IV-IV in FIG. 5 is a cross-sectional view taken along line VV in FIG.

  As shown in FIG. 6, the motor 19 includes a motor casing 35 and a rotating shaft 20.

  The motor casing 35 has a barrel 33 whose one end is an opening end 33 a and a cylindrical end bell cap 34 having one end opening for closing the opening end 33 a of the barrel 33. The end bell cap 34 is made of an insulating material. As shown in FIG. 4, the motor casing 35 includes two flat surfaces 36 and 37 that are parallel to the rotation shaft 20 and substantially parallel to each other. The two flat surfaces 36 and 37 are formed in the entire axial direction in the motor casing 35. A front end side cylindrical portion 39 is provided at substantially the center of the closing surface (front end portion) 38 facing the opening end 33a of the barrel 33 so as to protrude outward. In addition, a rear end side cylindrical portion 41 is provided at substantially the center of the closing surface (rear end portion) 40 of the end bell cap 34 facing the opening end 33a so as to protrude outward. As shown in FIG. 5, the length from the front end part 38 of the motor casing 35 to the rear end part 40 is L1. The barrel 33 accommodates a stator (not shown) and a rotor (not shown) integrated with the rotary shaft 20.

  As shown in FIG. 6, the flat surface 36 of the end bell cap 34 is provided with a pair of through holes 42 </ b> A and 42 </ b> B that penetrate between the inside and the outside of the end bell cap 34. A pair of power supply terminals 43A and 43B are provided on the inner surface of the end bell cap 34 adjacent to the through holes 42A and 42B. The power feeding terminal 43 is electrically connected to a motor connecting portion 81 of the terminal 31 (described later) inserted through the through hole 42.

  The rotating shaft 20 is rotatably supported by a front end side cylindrical portion 39 and a rear end side cylindrical portion 41 each having a bearing therein. One end of the rotary shaft 20 protrudes from the front end side cylindrical portion 39 of the barrel 33. The other end of the rotating shaft 20 only extends slightly outward from the rear end side cylindrical portion 41 of the end bell cap 34.

  A worm 21 is attached to the tip of the rotating shaft 20 extending outward from the front end side cylindrical portion 39. The worm 21 has a tip 45 at the tip.

  As shown in FIG. 7, the case 14 has a box shape with one end opening. The case 14 is made of an insulating material. The case 14 has a regulation wall (regulation part) 51 provided therein, and a motor housing part 52 and a cam arrangement part 53 are partitioned. The case 14 is provided with a connector portion 57 adjacent to the motor housing portion 52 on the side opposite to the cam arrangement portion 53.

  The motor accommodating portion 52 has a substantially rectangular parallelepiped space that can accommodate the motor casing 35. The motor housing portion 52 includes a regulation wall 51, a blocking wall (blocking portion) 54 that faces the regulation wall 51, two side walls 55 and 55 that connect the regulation wall 51 and the blocking wall 54, and the four walls 51 and 54. , 55, 55 and a bottom wall 56 that is continuous. As shown in FIG. 5, the length L <b> 2 between the regulating wall 51 and the blocking wall 54 is such that the blocking surface 38 on the radially outer side from the front end side cylindrical portion 39 of the barrel 33 and the rear end side of the end bell cap 34. It is longer than the length L3 between the end of the rotating shaft 20 supported by the cylindrical portion 41. As shown in FIG. 3, the width between one side wall 55 and the other side wall 55 is substantially the same as the outer diameter of the motor casing 35. As shown in FIG. 4, the height H1 of the four walls 51, 54, 55, 55 is such that a distance H2 between one flat surface 36 and the other flat surface 37 of the motor 19 and a recess 66 described later. It is higher than the depth H3 combined. The base 12 assembled to the case 14 is provided with a motor pressing portion 77 that contacts the flat surface 37 of the motor 19 at a position corresponding to the motor housing portion 52.

  As shown in FIGS. 7 and 8, a terminal fixing portion 59 is provided on the bottom wall 56 of the motor accommodating portion 52 so as to be continuous with the blocking wall 54. The terminal fixing part 59 has a terminal clamping surface (terminal clamping part) 60 and a terminal guide surface (terminal guide part) 61. The terminal fixing portion 59 has the same width as the interval between a pair of motor holding plate portions 63 described later.

  The terminal clamping surface 60 is spaced from the regulating wall 51 to the closing wall 54 by a length L4 obtained by adding the thickness d of the terminal 31 to the length L1 from the front end 38 to the rear end 40 of the motor casing 35. Is located. The terminal clamping surface 60 is substantially orthogonal to the rotating shaft 20.

  As shown in FIG. 8, the terminal guide surface 61 extends in the protruding direction of the rotary shaft 20 from the respective hole edges of a pair of insertion holes 70 </ b> A and 70 </ b> B described later on the motor housing portion 52 side of the blocking wall 54. As shown in FIG. 4, the terminal guide surface 61 has a height at which the terminal 31 does not interfere with the rear end side cylindrical portion 41 of the motor 19 in a state where the terminal 31 having a thickness d is disposed on the terminal guide surface 61. Is formed. The terminal guide surface 61 is connected so as to be substantially orthogonal to the terminal clamping surface 60. An auxiliary guide portion 62 is provided on the terminal guide surface 61 so as to extend in the axial direction. In the width direction, it is located at the center between the insertion hole 70A and the insertion hole 70B. The auxiliary guide portion 62 is formed at a height that does not interfere with the rear end side cylindrical portion 41 of the motor 19. The auxiliary guide portion 62 is preferably not less than the same height as the thickness d of the terminal 31, but if it has a height that can guide the terminal 31 to the insertion hole 70, it is not more than the thickness d of the terminal 31. May be. The auxiliary guide portion 62 guides the terminals 31A and 31B to the corresponding insertion holes 70A and 70B, respectively, and prevents the terminals 31A and 31B attached to the case 14 from contacting each other.

  A pair of motor holding plates (motor holding plate portions) 63 </ b> A and 63 </ b> B protrude from the closing wall 54 of the motor housing portion 52. The motor holding plate 63 is rectangular. The motor holding plates 63A and 63B extend in a range from the blocking wall 54 of the motor accommodating portion 52 to the rear end portion 40 of the motor 19 in the length direction with the rear end side cylindrical portion 41 of the motor 19 interposed therebetween. ing. As shown in FIG. 4, the pair of motor holding plates 63 </ b> A and 63 </ b> B are disposed at the same interval as the outer diameter of the rear end side cylindrical portion 41 of the motor 19 on both sides of the rotating shaft 20 in the width direction. In the present embodiment, each motor holding plate 63 </ b> A, 63 </ b> B has an upper end located above the rear end side cylindrical portion 41 of the motor 19 and a lower end connected to the terminal fixing portion 59. The motor holding plate 63 sandwiches the rear end side cylindrical portion 41 provided on the closing surface 40 of the motor casing 35.

  As shown in FIGS. 7 and 8, the bottom wall 56 of the motor housing portion 52 is provided with a recess 66 having an approximately rectangular opening surface. As shown in FIG. 5, in the recess 66, one end edge of the opening surface orthogonal to the axial direction is located in the region of the barrel 33 of the motor 19. As shown in FIG. 7, the other end edge 69 of the opening surface orthogonal to the rotating shaft 20 is adjacent to the end surfaces 64A and 64B of the motor holding plates 63A and 63B. The recess 66 is extended at the central portion of the edge 69 so as to be adjacent to both the motor holding plates 63A and 63B and the terminal holding surface 60 of the terminal fixing portion 59. The expansion area 67 is an area in which step portions 83A and 83B of terminals 31A and 31B described later are accommodated. The interval in the width direction of the recess 66 is wider than between the pair of motor holding plates 63A and 63B. The recess 66 has a pair of terminals 31A in the height direction to a position where connector connecting portions (first tab-like portions) 84A and 84B of a pair of terminals 31A and 31B, which will be described later, face the pair of insertion holes 70A and 70B, respectively. , 31B are formed to have a depth capable of moving, and a bottom wall 68 is formed. The recess 66 is sized to accommodate the bases 82A and 82B of the pair of terminals 31A and 31B in the assembled state, and the bases 82A and 82B and the motor 19 do not interfere with each other.

  The blocking wall 54 is provided with a pair of insertion holes 70 </ b> A and 70 </ b> B that communicate the inside of the motor housing portion 52 and the inside of the connector portion 57. The terminal 31A is inserted through the insertion hole 70A. The terminal 31B is inserted through the insertion hole 70B. The insertion holes 70A and 70B are through holes having substantially the same cross-sectional shape as the cross-sectional shapes of the connector connecting portions 84A and 84B of the terminals 31A and 31B, respectively. The insertion hole 70A is arranged between the motor holding plate 63A and the auxiliary guide portion 62 in the width direction. The insertion hole 70B is disposed between the motor holding plate 63B and the auxiliary guide part 62 in the width direction. The pair of insertion holes 70 </ b> A and 70 </ b> B are located at an equal distance from the auxiliary guide part 62.

  An intermediate support portion 71 that supports the front end side cylindrical portion 39 of the motor 19 is provided at the upper end edge of the restriction wall 51. The intermediate support portion 71 is an edge surface of a portion in which a substantially lower half region of a virtual circle arranged coaxially with the rotation shaft 20 is cut out. The diameter of the imaginary circle is substantially the same as the outer diameter of the front end side cylindrical portion 39. The restriction wall 51 abuts on the closing surface 38 of the motor casing 35 housed in the motor housing portion 52. The restriction wall 51 restricts the displacement of the motor casing 35 so as to maintain the state in which the rear end portion 40 of the motor casing 35 sandwiches the stepped portion 83 with the terminal clamping surface 60.

  The restriction wall 51 is provided with a positioning portion 78 at an end portion on the shaft portion 75 side described later with respect to the axis. The positioning part 78 positions the cam part 23 at the initial position in the non-operating state. At the initial position of the cam portion 23, the positioning portion 78 abuts against the cam portion 23 of the worm wheel 22 biased by a return spring (not shown).

  The motor housing portion 52 is provided with screw holes 72 and 72 so as to be positioned substantially diagonally. Screws are inserted into the screw holes 72 and 72 to attach the actuator 10 to the base 12.

  The cam arrangement portion 53 includes a bearing portion 73 provided on the axis of the motor 19. The bearing 73 supports the tip 45 of the worm 21 attached to the rotating shaft 20 of the motor 19. Further, on the bottom wall 74 of the cam arrangement portion 53, a shaft portion 75 for attaching and supporting the worm wheel 22 that meshes with the worm 21 and the open lever 29 protrudes in the height direction. The shaft portion 75 is located on the same side as the position restricting portion 78 with respect to the rotating shaft 20 of the motor 19. The shaft portion 75 is fitted in a mounting hole (not shown) provided in the base 12 at the tip.

  The closing wall 54 of the motor housing portion 52 is provided with a connector portion 57 that is connected to the counterpart connector. The connector part 57 protrudes from the motor housing part 52 to the side opposite to the cam arrangement part 53. The connector portion 57 has a rectangular tube shape with an open end. As shown in FIG. 3, a connector connecting portion 84 that is an end portion of the pair of terminals 31 </ b> A and 31 </ b> B is disposed inside the connector portion 57. The connector portion 57 includes a locking claw 76 that locks the mating connector.

  The terminals 31A and 31B are made of metal and have a rectangular cross section. The terminals 31A and 31B supply driving power to the motor 19. The terminals 31A and 31B are composed of a pair of a plus terminal and a minus terminal.

  As shown in FIGS. 9 to 11, the terminal 31 </ b> A includes a motor connection part (second tab-like part) 81, a base part 82, a step part 83, and a connector connection part (first tab-like part) 84. Yes.

  The motor connection part 81 is formed at one end of the plus terminal 31A. As shown in FIG. 5, the motor connecting portion 81 is long enough to be inserted into the through hole 42 of the motor 19 and connected to the power supply terminal 43 inside the end bell cap 34 with the base portion 82 in contact with the bottom wall 68 of the recess 66. That's it. The motor connection portion 81 extends in the extending direction of the step portion 83.

  The base portion 82 is a portion bent in an L shape on the same plane connecting the motor connection portion 81 and the step portion 83. The base portion 82 is continuous at one end so as to be orthogonal to the motor connection portion 81. In the base portion 82, the stepped portion 83 side of the portion bent in the L shape extends in the extending direction of the connector connecting portion 84. As shown in FIG. 5, the base 82 is disposed so as to contact the bottom wall 68 of the recess 66 in a state where the motor 19 is mounted on the case 14. The length of the L-shaped portion of the base portion 82 on the motor connecting portion 81 side is the same as the interval in the width direction between the through hole 42A and the insertion hole 70A of the motor 19. The length of the L-shaped portion of the base portion 82 on the side of the step portion 83 is the same as the axial distance between the through hole 42 </ b> A of the motor 19 and the terminal clamping surface 60.

  The step portion 83 is provided so as to extend in a direction substantially perpendicular to the extending direction of the connector connecting portion 84. The step portion 83 is continuous at the other end of the base portion 82 so as to extend in the same direction as the motor connection portion 81. The step portion 83 has the same length as the height from the bottom wall 68 of the recess 66 to the insertion hole 70.

  The connector connection portion 84 has a proximal end connected to the other end of the step portion 83. The connector connecting portion 84 extends in the same direction as the extending direction of the base portion 82 on the stepped portion 83 side, that is, in the opposite direction to the protruding direction of the rotating shaft 20 of the motor 19 when mounted on the actuator 10. The connector connecting portion 84 has a length that can be connected to a mating connector inserted into the connector portion 57 in a state where the step portion 83 is in contact with the terminal clamping surface 60.

  In short, the terminal 31A is bent at a right angle from the base portion 82 to form a stepped portion 83, and the tip of the stepped portion 83 is bent at a right angle to form a connector connecting portion 84.

  The terminal 31 </ b> B is symmetrical to the terminal 31 </ b> A with respect to a surface that passes through the rotary shaft 20 and extends in the height direction in a state where the terminal 31 </ b> B is attached to the actuator 10.

  As shown in FIG. 3, the worm gear 32 includes a worm 21 and a worm wheel 22 that meshes with the worm 21. The worm 21 is attached to the rotating shaft 20 of the motor 19. The worm wheel 22 is provided with a shaft insertion hole 85 through which the shaft portion 75 of the case 14 is inserted. The worm wheel 22 is rotatably arranged in the cam arrangement portion 53 through the shaft portion 75. Inside the worm wheel 22, a return spring (not shown) is provided for returning the cam portion 23 to the non-opening operation position where the cam portion 23 is not in contact with the operation receiving portion 28. The cam portion 23 is formed in a shape that can be operated by pressing the operation receiving portion of the device to be assembled.

  A procedure for assembling the actuator 10 to the latch device 11 according to the present invention will be described.

  As shown in FIG. 12, the case 14 of the actuator 10 is placed with the opening facing upward. The terminal 31A is positioned so that the base 82 faces the bottom wall 68 of the recess 66 and the connector connection 84 faces the connector 57, and the tip of the connector connection 84 faces the insertion hole 70A. The terminal 31 is moved from above the wall 68 to the bottom wall 68 side. Then, as shown in FIG. 13, the base 82 is brought into contact with the bottom wall 68, and a part of the tip of the connector connecting portion 84 is brought into contact with the terminal guide surface 61 between the motor holding plate 63 </ b> A and the auxiliary guide portion 62. Let

  Next, the terminal 31A is moved to the left side in FIG. 14 until the step portion 83 contacts the terminal holding surface 60 of the terminal fixing portion 59, and the connector connecting portion 84 of the terminal 31A is inserted into the insertion hole 70A.

  The terminal 31B is assembled in the same procedure as the terminal 31A.

  Then, as shown in FIG. 15, the power supply terminals 43 </ b> A and 43 </ b> B are placed at the bottom of the motor housing 52 in a posture in which the motor 19 with the worm 21 attached to the rotary shaft 20 in advance is projected in a direction away from the closing portion 54. It moves to the upper side of the motor accommodating part 52 so that it may face the wall 56 side. And as shown in FIG. 16, the front-end | tip part 45 of the worm 21 is arrange | positioned at the bearing part 73 in the cam arrangement | positioning part 53, and the rear-end part side cylindrical part 41 of the end bell cap 34 is between motor holding plates 63A and 63B. The motor casing 35 is moved from above the motor housing portion 52 to the inside of the motor housing portion 52 so as to be inserted. Then, while inserting the motor connection portions 81A, 81B of the terminals 31A, 31B into the through holes 42A, 42B of the end bell cap 34, the terminals 31A, 31B are connected by the closing surface 38 of the end bell cap 34 and the terminal clamping surface 60 of the terminal fixing portion 59. The motor casing 35 is pushed into the motor housing portion 52 so as to sandwich the step portions 83A and 83B of 31B. When the barrel 33 of the motor casing 35 is pushed in until it comes into contact with the bottom wall 56 of the motor housing portion 52, the motor connection portions 81 A and 81 B of the terminals 31 A and 31 B are connected to the power supply terminals 43 A and 43 B of the motor 19. 17, the step portions 83A and 83B of the terminals 31A and 31B are clamped by the closing surface 38 of the end bell cap 34 and the terminal clamping surface 60 of the terminal fixing portion 59, and the terminals 31A and 31B are securely attached to the case 14. Fixed to. On the other hand, as shown in FIG. 4, the motor 19 is sandwiched between the motor holding plates 63 </ b> A and 63 </ b> B with the rear end side cylindrical portion 41 of the end bell cap 34 having no gap. Thereby, rattling in the case 14 is prevented and the motor 19 is securely fixed to the case 14.

  The end bell cap 34 holds the rotating shaft 20 of the motor 19 and holds the power supply terminal 43 and the brush (not shown) in the motor 19. However, the end bell cap 34 is made of an insulating material. Even if each terminal 31 is inserted, there is no short circuit.

  However, when the large motor 19 is used, since it is necessary to increase the strength for holding the rotating shaft 20, the end bell cap 34 is composed of a steel plate end bell and a resin brush holder. In this type of motor 19, since the end bell of the steel plate is located at the rear end, if the terminal 31 is pressed directly by the end bell cap 34, a short circuit occurs. For this reason, as shown in FIG. 18, it is necessary to sandwich an insulating sheet (insulating member) 86 between the terminal 31 and the end bell cap 34.

  Finally, the worm wheel 22 and the open lever 29 are inserted through the shaft portion 75 of the case 14. At that time, the cam portion 23 of the worm wheel 22 is brought into contact with the positioning portion 78. Thereafter, the base 12 is fixed to the opening of the case 14 with screws. In this manner, the actuator 10 can be mounted on the latch device 11 while the motor 19 is housed and held in the case 14 without rattling.

  According to the present invention, the connector connecting portion 84 of the terminal 31 is inserted into the insertion hole 70 from the motor accommodating portion 52 side, and the step portion 83 of the terminal 31 is clamped by the terminal clamping surface 60 of the case 14 and the motor casing 35. Thus, the terminal 31 connected to the power supply terminal 43 of the motor 19 can be easily fixed to the case 14. Therefore, a dedicated separate member for fixing the terminal 31 is not required, and the terminal 31 can be fixed to the case easily and at low cost. Further, when the mating connector is connected to the connector portion 57, the terminal 31 can be prevented from moving backward in the connector portion 57.

  By forming the recess 66, the connector connecting portion 84 of the terminal 31 can be easily inserted into the motor accommodating portion 52 so as to correspond to the insertion hole 70. Even in the assembled state, the motor 19 can be prevented from interfering with the base portion 82 of the terminal 31 accommodated in the recess 66, and the motor 19 can be reliably accommodated in the motor accommodating portion 52. Therefore, the terminal 31 can be fixed to the case 14 easily and reliably.

  Since the rear end portion side cylindrical portion 41 of the rear end portion 40 of the motor casing 35 can be sandwiched by the holding plate portion 63 without rattling, the motor 19 can be reliably fixed to the motor housing portion 52. Therefore, the terminal 31 can be fixed to the case 14 easily and reliably.

  The state in which the stepped portion 83 is sandwiched between the rear end portion 40 of the motor casing 35 and the terminal clamping surface 60 can be maintained by the restriction wall 51 of the motor housing portion 52. Therefore, the terminal 31 can be fixed to the case 14 easily and reliably.

  The connector connecting portion 84 extending in the direction opposite to the protruding direction of the rotating shaft 20 can be easily and reliably guided to the insertion hole 70 by the terminal guide surface 61.

  The step portion 83 of the terminal 31 can be clamped between the end bell cap 34 and the terminal clamping surface 60. Therefore, the terminal 31 connected to the power supply terminal 43 of the motor 19 can be easily fixed to the case 14. Further, since the case 14 and the end bell cap 34 are made of an insulating material, it is possible to prevent the terminal 31 and the case 14 and the end bell cap 34 from being short-circuited.

  By connecting the terminal guide surface 61 and the terminal clamping surface 60, the terminal guide surface 61 and the terminal clamping surface 60 can be formed integrally and compactly.

DESCRIPTION OF SYMBOLS 10 Actuator 14 Case 19 Motor 20 Rotating shaft 31, 31A, 31B Terminal 33 Barrel 33a Open end 34 End bell cap 35 Motor casing 38 Closed surface (front end)
40 Blocking surface (rear end)
41 Rear end side cylindrical portion 43A, 43B Feed terminal 51 Restriction wall (regulation portion)
52 Motor housing part 54 Blocking wall (blocking part)
56 Bottom wall 57 Connector part 60 Terminal clamping surface (terminal clamping part)
61 Terminal guide surface (terminal guide part)
63A, 63B Motor holding plate (motor holding plate)
66 Concave part 70A, 70B Insertion hole 81 Motor connection part (2nd tab-shaped part)
82 Base part 83 Step part 84, 84A, 84B Connector connection part (1st tab-shaped part)
H1 Height of motor housing wall H2 Distance between one flat surface of motor and other flat surface H3 Depth of recess L1 Length from front end to rear end of motor casing L2 Restriction wall and blocking wall L3 Length between the regulating wall and the end of the rotating shaft supported by the rear end side cylindrical portion L4 Length obtained by adding the terminal thickness d to the length L1 d Terminal thickness

Claims (9)

A motor having a motor casing, a power supply terminal, and a rotating shaft protruding from the front end of the motor casing;
One end connected to the power supply terminal of the motor and provided at the other end and extending in a direction opposite to the protruding direction of the rotating shaft, and an extension direction of the first tab-like portion A terminal having a step extending in the intersecting direction;
A motor housing portion housing the motor casing, and a connector portion provided with an insertion hole through which a tip of the first tab-shaped portion of the terminal is inserted in a closing portion opposite to an opening to which the counterpart connector is connected; A case comprising:
An actuator comprising: a terminal clamping part that constitutes a part of the case and clamps the stepped part between the motor casing and the motor casing accommodated in the motor accommodating part. The motor casing is accommodated in the motor accommodating portion in a posture in which the rotating shaft protrudes in a direction away from the closing portion,
2. The actuator according to claim 1, wherein the terminal clamping portion clamps the stepped portion of the terminal with a rear end portion of the motor casing. The terminal includes, at one end, a second tab-shaped portion that extends in the extending direction of the step portion and is connected to the power supply terminal of the motor, and includes the second tab-shaped portion and one end of the step portion. A base portion extending in an extending direction of the first tab-like portion to be connected,
The actuator according to claim 2, wherein a proximal end of the first tab-like portion is connected to the other end of the stepped portion.   The actuator according to claim 3, wherein a concave portion for accommodating the base portion of the terminal is formed in a bottom wall of the motor accommodating portion.   The case is in contact with the front end portion of the motor casing housed in the motor housing portion, and maintains a state where the rear end portion of the motor casing sandwiches the stepped portion between the terminal sandwiching portion and the case. The actuator according to any one of claims 2 to 4, further comprising a restricting portion that restricts the displacement of the motor casing.   The actuator according to any one of claims 2 to 5, wherein the case includes a pair of holding plate portions that sandwich a cylindrical portion provided at the rear end portion of the motor casing.   The said case is provided with the terminal guide part extended in the protrusion direction of the said rotating shaft from the hole edge of the said insertion hole in the said motor accommodating part side of the said obstruction | occlusion part. Actuator.   The actuator according to claim 7, wherein the terminal guide portion is connected to the terminal holding portion. The motor casing includes a barrel whose one end is an open end, and an end bell cap that closes the open end of the barrel;
The step portion of the terminal is sandwiched between the end bell cap and the terminal clamping portion,
The actuator according to any one of claims 1 to 8, wherein the case and the end bell cap are made of an insulating material.

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