JP5551989B2 - Linear actuator - Google Patents

Description

  The present invention relates to a linear actuator suitable for a continuously variable transmission, particularly a belt type continuously variable transmission for a vehicle.

  A vehicle belt-type continuously variable transmission (also called a V-belt continuously variable transmission) has a belt (V-belt) wound around an input-side drive pulley and an output-side driven pulley to change the groove width of the pulley. To change the contact radius of the belt and pulley, thereby changing the gear ratio (reduction ratio) steplessly. In order to make the groove width of the pulley variable, the pulley is a combination of a fixed sheave and a movable sheave, and the pulley groove width is changed by moving the movable sheave in the pulley axial direction. An electric actuator is used to move the movable sheave. However, when the electric actuator is housed in the engine housing (transmission housing), there are many problems in terms of heat reception and heat dissipation. Therefore, the present applicant has proposed a continuously variable transmission shown in Patent Document 1 below. In this continuously variable transmission, one end of a swing member is connected to the movable sheave, and the other end of the swing member is moved in a linear direction by an electric linear actuator to move the movable sheave and change the groove width. However, this makes it possible to dispose the linear actuator outside the engine housing (transmission housing), thereby avoiding problems of heat reception and heat dissipation.

  Further, the present applicant has proposed an intermediate terminal suitable for the linear actuator for continuously variable transmission shown in Patent Document 1 in Patent Document 2 below. In this linear actuator, an electric motor is attached to the actuator housing side, and an external connection terminal (coupler) is attached to an actuator cover that covers the actuator housing. For example, to supply power to the electric motor, the actuator cover and the electric motor, Wiring is required between the actuator housing. In order to electrically connect the actuator housing and the actuator cover, the actuator cover is provided with a cover-side male terminal, and the actuator housing is provided with a motor-side male terminal directly on the electric motor. When the actuator cover is attached to the actuator housing, the cover-side male terminal and the motor-side male terminal protrude in opposite directions at positions close to each other. At this close position, the male terminals protruding in opposite directions are connected to each other by an intermediate terminal to which the opposite female terminals are connected, thereby electrically connecting the actuator cover and the actuator housing, that is, the electric motor. Can do. The intermediate terminal is formed by bending a thin metal plate and forming two female terminal portions with opposite openings. Two female terminals are provided at each position of the female terminal portion so that the male terminal is sandwiched from both sides. The female terminal is pressed against the male terminal by the elasticity of the metal thin plate. That is, the female terminal is formed by bending a metal thin plate. The intermediate terminal is housed in the recess of the actuator cover, and is covered with a resin cap after the housing.

JP 2009-79759 A JP 2009-278774 A

However, in the linear actuator provided with the intermediate terminal described in Patent Document 2, since the female terminal is simply formed by bending a metal thin plate, the elastic force of the female terminal is reduced during assembly with the male terminal. As a result, it may become so-called sagging and may not be sufficiently pressed against the male terminal, resulting in poor contact.
The present invention has been made paying attention to the above problems, and an object of the present invention is to provide a linear actuator capable of suppressing and preventing the female terminal from sag during assembly of the intermediate terminal. It is.

  In order to solve the above problems, a linear actuator according to the present invention is a linear actuator that varies a pulley groove width of a belt-type continuously variable transmission, and includes an actuator housing, an actuator cover that covers the actuator housing, and the actuator housing An electric motor attached to the motor, a speed reduction mechanism that transmits the rotational force generated by the electric motor, a rotational element that inputs the rotational force of the electric motor via the speed reduction mechanism, and an axis line according to the amount of rotation of the rotational element A drive mechanism including an axially displacing element that is displaced in a direction, and is connected to a cover-side male terminal provided in the actuator cover in a state of being stored in the recess of the actuator cover and in the recess. When the actuator housing is covered with An intermediate terminal connected to a motor-side male terminal provided in the electric motor or actuator housing, the intermediate terminal including two side wall portions that restrict deformation in the width direction of the recess, and the recess A cover-side female terminal that elastically deforms in the width direction and contacts the cover-side male terminal and a motor-side female terminal that contacts the motor-side male terminal are provided.

In addition, the intermediate terminal includes a cover-side female terminal stopper and a motor-side female terminal stopper that restrict elastic deformation amounts of the cover-side female terminal and the motor-side female terminal.
Further, the intermediate terminal is formed by bending a single metal plate, and the cover-side female terminal and the motor-side female terminal are arranged in parallel.

Also, two connecting wall portions that connect between the two side wall portions, and a bottom wall portion that covers one open end portion of the rectangular tube portion including the two side wall portions and the two connecting wall portions, The end of the two connecting wall portions opposite to the bottom wall portion is bent to the inside of the rectangular tube portion to form two opposing cover-side female terminals and two opposing motor-side female terminals, The bottom wall is formed with an insertion hole into which either the cover-side male terminal or the motor-side male terminal is inserted.
Further, after the intermediate terminal is housed in the recess, the recess is covered with a resin cap, and the resin cap is fixed to the actuator cover.

  Thus, according to the linear actuator of the present invention, for example, when the swinging member connected to the movable sheave is swung to move the movable sheave in the pulley axial direction, the rotational force of the electric motor is transmitted via the speed reduction mechanism. Then, the axial displacement element is displaced in the axial direction according to the rotation amount of the rotation element, the swinging member is swung according to the displacement amount, and the inside of the recess of the actuator cover is The motor-side male provided in the electric motor or the actuator housing when the actuator housing is covered with the actuator-side cover connected to the cover-side male terminal provided in the actuator cover in a state of being housed in the recess. The intermediate terminal connected to the terminal includes a cover-side female terminal that contacts the cover-side male terminal by elastic deformation in the width direction of the recess and a mode. By forming the motor-side female terminal that contacts the side male terminal and the two side walls that restrict the deformation of the recess in the width direction, the cover-side female terminal of the intermediate terminal and the motor-side female terminal are restrained from sagging. Can be prevented.

In addition, the intermediate terminal is provided with a cover-side female terminal stopper and a motor-side female terminal stopper that regulate the elastic deformation amount of the cover-side female terminal and the motor-side female terminal. Can be further suppressed and prevented.
Also, by bending one metal plate material to form an intermediate terminal and arranging the cover-side female terminal and the motor-side female terminal in parallel, the cover-side male terminal and the motor-side male terminal can be easily connected, Easy to manufacture and manage intermediate terminals.

Further, one open end portion of the rectangular tube portion including the two side wall portions and the two connecting wall portions is covered with the bottom wall portion, and the end portion on the opposite side to the bottom wall portion of the two connecting wall portions is covered with the rectangular tube portion. Bending inward to form two opposing cover-side female terminals and two opposing motor-side female terminals, and either the cover-side male terminal or the motor-side male terminal is inserted into the bottom wall portion By forming the hole, the cover-side male terminal and the motor-side male terminal that are close to each other can be easily connected even in the opposite direction, and the intermediate terminal can be easily manufactured and managed.
In addition, since the intermediate terminal is accommodated in the recess, the recess is covered with a resin cap, and the resin cap is fixed to the actuator cover. Therefore, the intermediate terminal can be assembled to the actuator cover, and the assemblability is improved. .

It is a skeleton figure showing one embodiment of continuously variable transmission using the linear actuator of the present invention. It is a longitudinal cross-sectional view explaining the effect | action of the linear actuator of FIG. It is explanatory drawing of the drive mechanism by the side of the actuator housing in the linear actuator of FIG. It is explanatory drawing of the actuator cover which covers the actuator housing of FIG. It is explanatory drawing of the sensor of FIG. FIG. 6 is an explanatory diagram of a state in which the sensor of FIG. 5 is fixed to the actuator cover of FIG. It is explanatory drawing of the state which attached the actuator cover of FIG. 6 to the actuator housing of FIG. It is explanatory drawing of the position of a sensor and an arm in the state of FIG. FIG. 7 is a development view of the intermediate terminal shown in FIG. 6. It is a five-sided view of an intermediate terminal. (A) is AA sectional drawing of FIG. 10, (b) is BB sectional drawing of FIG. It is a perspective view of an intermediate terminal. It is a perspective view of the female terminal formed in the intermediate terminal. It is explanatory drawing of the state which attached the intermediate terminal to the actuator cover. It is explanatory drawing of the state which attaches an intermediate terminal to an actuator cover. It is CC sectional drawing of FIG. It is DD sectional drawing of FIG.

Next, an embodiment of the linear actuator of the present invention will be described with reference to the drawings.
FIG. 1 is a skeleton diagram of a continuously variable transmission using the linear actuator of the present embodiment. In the present embodiment, the vehicle driving force transmitted from the crankshaft 2 of the engine 1 to the drive pulley 3 in the continuously variable transmission is transmitted to the driven pulley 5 via the belt (V belt) 4 and further from the final gear 6. It is transmitted to the drive wheel. Both the driving pulley 3 and the driven pulley 5 are composed of a combination of fixed sheaves 3a, 5a and movable sheaves 3b, 5b. In this embodiment, the movable sheave 3b of the driving pulley 3 is moved in the pulley axial direction by the linear actuator 7. To change the groove width. A spring 201 and a centrifugal clutch 202 are attached to the movable sheave 5 b of the driven pulley 5. When the contact radius of the belt 4 changes as the groove width of the driving pulley 3 changes, the movable sheave 5 b moves as the belt 4 moves. The groove width is automatically changed by moving the sheave 5b in the pulley axial direction. A return spring 203 is also attached to the movable sheave 3 b of the drive pulley 3. In addition, although sheave has the meaning of the pulley which ropes itself, in this embodiment, it means any one cone which forms the groove | channel of a pulley.

  One end of the swing member 8 is connected to the movable sheave 3 b of the drive pulley 3. The central portion of the swing member 8 is slidably connected to, for example, a transmission housing by a swing coupling structure 9 such as a pin. Therefore, in this embodiment, if the other end of the swinging member 8 is moved in a linear direction parallel to the pulley axis by the linear actuator 7, the movable sheave 3b of the driving pulley 3 is moved in the pulley axial direction, and the driving pulley The groove width of 3 can be changed. The movable sheave 3 b of the drive pulley 3 and the movable sheave 5 b of the driven pulley 5 are connected to the return spring 203, the swing member 8, the spring 201, and the centrifugal clutch 202 via the bearing 204 and the bearing holder 205. Specifically, the inner ring of the bearing 204 is fitted to the movable sheaves 3 b and 5 b, and the outer ring is fitted to the bearing holder 205. Therefore, the inner ring of the bearing 204 rotates together with the movable sheaves 3b and 5b, but the outer ring and the bearing holder 205 do not rotate.

  As will be described later, the power transmission structure inside the linear actuator 7 will be described later. FIG. 2 shows an axial displacement element that drives the rocking member 8 and a rotation element that moves the axial displacement element in the axial direction. . As is apparent from the figure, the rotating element and the axial displacement element are composed of a ball screw mechanism, the rotating element is composed of a ball screw nut 11, and the axial displacement element is composed of a ball screw shaft 12. The ball screw nut 11 and the ball screw shaft 12 are accommodated in an actuator housing 13 made of aluminum, and the actuator housing 13 is attached to the outside of a transmission housing (not shown). The opening end on the left side of the actuator housing 13 is covered with a resin actuator cover 14.

  The ball screw groove of the ball screw shaft 12 is formed only in the left half of FIG. 2, and the right half is a round bar without a groove. The round bar portion of the ball screw shaft 12 is smaller than the outer diameter of the ball screw groove portion. A round bar portion of the ball screw shaft 12 protrudes from the actuator housing 13 to the right in the figure via a seal member 15, and the seal member 15 seals the round bar portion of the ball screw shaft 12 so as to be slidable. The round bar portion of the ball screw shaft 12 is housed in a circular hole of the actuator housing 13 having a slightly larger diameter than the round bar portion. On the other hand, the ball screw groove portion of the ball screw shaft 12 is housed in the housing portion 17 of the actuator housing 13 communicating with the circular hole, and the ball screw nut 11 screwed into the ball screw groove portion is also housed in this housing portion. The protruding end portion of the ball screw shaft 12 is connected to the other end portion of the rocking member 8 via a link mechanism (not shown), and the link mechanism is engaged with a hole at the tip of the ball screw shaft 12 with a pin. This restricts the rotation of the ball screw shaft 12 itself. In addition, the ball screw nut 11 of the present embodiment has three rows (three circuits) of ball grooves, and the ball circulates in the circulating portion 11a formed by cold forging on the inner peripheral surface of the ball screw nut 11. Yes.

  The ball screw nut 11 is rotatably attached to the actuator housing 13 via a bearing 16. As a result, the movement of the ball screw nut 11 in the axial direction is restricted. A final gear 18 of a speed reduction mechanism, which will be described later, is attached to the outer periphery of the ball screw nut 11 via a key 21. The key 21 is integrally formed with the final gear 18. Accordingly, when the final gear 18 rotates, the ball screw nut 11 as a rotating element rotates. However, since the movement of the ball screw nut 11 itself in the axial direction is restricted, the ball screw shaft 12 as the axial direction displacement element moves in the axial direction. Moving. FIG. 2a shows a state in which the ball screw shaft 12 is at the leftmost position in the drawing, that is, the protrusion amount from the actuator housing 13 is minimum, and FIG. 2b is a drawing in which the ball screw shaft 12 is at the rightmost position in the drawing. This indicates a state in which the amount of protrusion is maximum.

  In the state in which the ball screw shaft 12 is at the rightmost side in the drawing, the ball screw groove portion of the ball screw shaft 12 abuts on the end surface of the storage portion of the actuator housing 13, and further movement of the ball screw shaft 12 to the right is restricted. . On the other hand, when the ball screw shaft 12 is at the leftmost position in the drawing, the left end surface of the ball screw shaft 12 is in contact with the end surface of the storage portion 20 of the actuator cover 14, and the ball screw shaft 12 moves further to the left. Is regulated. In addition, the code | symbol 19 in a figure is a sensor which contact | abuts directly to the illustration left end surface of the ball screw shaft 12 which is the said axial direction displacement element, and detects the displacement amount to the axial direction of the said ball screw shaft 12. FIG.

  FIG. 3 is an explanatory view of the electric motor 22 and the speed reduction mechanism attached to the actuator housing 13, FIG. 3a is a front view, and FIG. 3b is a bottom view. The electric motor 22 is separate from the actuator housing 13 and is fixed to the actuator housing 13 by a fixture 24 such as a hexagon socket bolt. Reference numeral 23 in the figure is a motor-side motor power male terminal. A drive pinion 25 is press-fitted and fixed to the rotating shaft of the electric motor 22. An intermediate gear 26 that meshes with the drive pinion 25 is rotatably engaged with the intermediate shaft 28, and an intermediate pinion 27 that is integral with the intermediate gear 26 meshes with the final gear 18. The intermediate shaft 28 is press-fitted and fixed to the actuator housing 13. Accordingly, the rotational force of the electric motor 22 is transmitted from the drive pinion 25 to the intermediate gear 26, the intermediate shaft 28, and the intermediate pinion 27 in this order, and finally transmitted to the final gear 18, and after rotating the ball screw nut 11, the ball screw shaft 12 is moved. Displacement in the axial direction.

  FIG. 4 is a front view of the actuator cover 14 in a state where various components are not attached. Reference numeral 29 in the drawing denotes a positioning engagement claw projecting in the direction perpendicular to the drawing sheet, and engages and positions the peripheral edge of the final gear 18 of the actuator housing 13 in FIG. Reference numeral 30 denotes a cover-side motor power supply male terminal connected to the motor-side motor power supply male terminal 23, which is insert-molded into the resin-made actuator cover 14. A thin wiring from the cover-side motor power supply male terminal 30 to a coupler to be described later is also insert-molded in the resin actuator cover 14. Reference numeral 41 in the figure denotes a breather attached to the through hole of the actuator cover 14. The breather 41 is a cap body in which a porous film is stretched in the center, and the pressure inside the actuator cover 14 can be adjusted through the porous film.

  Reference numeral 31 in FIG. 4 denotes a sensor storage unit in which the sensor 19 is stored. FIG. 5 shows details of the sensor 19 that detects the amount of displacement in the axial direction of the ball screw shaft 12 that is the axial direction displacement element. 5a is a perspective view of the sensor 19, FIG. 5b is a front view of the sensor 19, FIG. 5c is a bottom view of the sensor 19, and FIG. The sensor 19 is a rotary potentiometer, and a sensor power supply terminal 32, a sensor ground (ground) terminal 33, and a sensor output terminal 34 are provided on the lower surface side of FIG. An arm 35 is fixed to the rotation shaft of the sensor 19 composed of this rotary potentiometer, and the tip of the arm 35 is brought into direct contact with the end of the ball screw shaft 12. When the ball screw shaft 12 is displaced in the axial direction, as shown in FIG. 2, the arm 35 of the sensor 19 comes into contact with the illustrated left end surface of the ball screw shaft 12, that is, the shaft end surface, and rotates while sliding. As a result, the rotation shaft of the sensor 19 composed of a rotary potentiometer is rotated, and the output signal of the sensor 19 changes. A change in the output signal is detected by a control device (not shown), and the rotation state of the electric motor 22 is feedback-controlled. Incidentally, in the state in which the ball screw shaft 12 shown in FIG. 2A is at the leftmost side in the drawing, the left end surface of the ball screw shaft 12 is in contact with the end surface of the storage portion 20 of the actuator cover 14 as described above. The arm 35 is set so as not to interfere with the actuator cover 14.

  6A is a front view of the state in which the sensor 19 is fixed to the actuator cover 14, and FIG. 6B is a bottom view of the state in which the coupler 36 is further fixed to the actuator cover 14. The sensor 19 is housed in the sensor housing portion 31 and fixed to the actuator cover 14 with potting (resin pile) or an adhesive. A coupler 36 is integrally formed outside the sensor housing portion 31 of the actuator cover 14, and the inner connection end face of the coupler 36 faces the terminals 32 to 34 of the sensor 19 housed and fixed in the sensor housing portion 31. Therefore, the terminals 32 to 34 of the sensor 19 are inserted into the inner connection end face of the coupler 35, and the terminals 32 to 34 are connected to the internal wiring of the coupler 36 (they are automatically connected only by being inserted). In FIG. 6A, reference numeral 42 denotes an intermediate terminal inserted into the cover-side motor power male terminal 30 on the actuator cover 14 side, and reference numeral 43 denotes a resin cap attached to the intermediate terminal 42. The motor-side motor power male terminal 23 on the actuator housing 13 side is connected to the motor-side motor power male terminal 30 on the actuator cover 14 side via the intermediate terminal 42.

  FIG. 7a is a front view of the actuator cover 14 to which the coupler 36 is attached, which is put on the actuator housing 13 and fixed with a fixing tool 37 such as a screw, and FIG. 7b is a view as seen from the arrow A in FIG. 7a. . When the actuator cover 14 is covered and fixed to the actuator housing 13, as shown in FIGS. 2 and 4, a seal member 39 is inserted into a groove 38 formed in the outer peripheral portion of the mating surface of the actuator cover 14, and the linear actuator 7 is in a liquid-tight state.

  Reference numeral 40 in the figure denotes a thin-plate wiring that is inserted into the inside of the actuator cover 14 and communicates with the cover-side motor power male terminal 30 and extends to the inside of the coupler 36 that is integrally formed with the actuator cover 14 as described above. It is installed. Incidentally, FIG. 7 b shows the layout of the external connection male terminal of the coupler 36. In the present embodiment, of the external connection female terminals in two stages and three rows, the upper right female terminal in the figure is for motor power (−), and the upper left female terminal in the figure is for motor power (+). The lower female terminal is for sensor ground, the lower middle female terminal in the figure is for sensor output signals, and the lower left female terminal in the figure is for sensor power.

  FIG. 8 is a front view of the state in which the actuator cover 14 is seen through in a state where the actuator cover 14 is put on the actuator housing 13 and fixed as shown in FIG. The ball screw shaft 12 is provided with a center hole for processing. The arm 35 of the sensor 19 avoids the center hole of the ball screw shaft 12 and is formed on the axial end surface of the ball screw shaft 12, that is, the shaft end portion. The arm 35 of the sensor 19 is smoothly slidably moved as the ball screw shaft 12 moves in the axial direction.

  FIG. 9 is a development view of the intermediate terminal 42. The intermediate terminal 42 of the present embodiment is formed by bending a thin metal plate, bending a dashed line in the figure into a mountain, and bending between adjacent broken lines. 10 is a five-side view of the intermediate terminal 42 completed by bending, FIG. 11a is a cross-sectional view taken along line AA of FIG. 10, FIG. 11b is a cross-sectional view taken along line BB of FIG. FIG. 13 is a perspective view showing an example of the formed female terminal. The intermediate terminal 42 includes a motor-side motor power female terminal 44 connected to the motor-side motor power male terminal 23 and a cover-side motor power female terminal 45 connected to the cover-side motor power male terminal 30. The motor-side motor power supply female terminal side wall 46 and the cover-side motor power supply female terminal side wall 47 are provided adjacent to each other in parallel, and two connection wall portions 48 for connecting the two are provided. And these two side wall parts 46 and 47 form a rectangular cylinder part, and it covers the one end part of the rectangular cylinder part with the bottom wall part 49, and it becomes a bottomed square cylindrical body. Further, the two side wall portions 46 and 47 are fixed by inserting and fixing the end portion of one connecting wall portion 48 into the insertion hole 50 formed in the other connecting wall portion 48. Deformation, in particular, deformation in the width direction of the concave portion of the actuator cover 14 described later can be suppressed and prevented. The wall surface orthogonal direction of the connecting wall portion 48 is defined as the width direction, the wall surface orthogonal direction of the side wall portions 46 and 47 is defined as the longitudinal direction, and the direction orthogonal to both the width direction and the longitudinal direction is defined as the height direction. The outer peripheral portion of the insertion hole 50 projects outward from the motor-side motor power supply female terminal side wall 46 and the cover-side motor power supply female terminal side wall 47, and is assembled into a recess of the actuator cover 14 described later. It functions as a misassembly prevention nail 59.

  Further, in each of the motor-side motor power female terminal portion 44 and the cover-side motor power female terminal portion 45, the respective end portions on the opposite side of the bottom wall portion 49 of the two connecting wall portions 48 are inside the rectangular tube portion. Two motor-side motor power supply female terminals 51 and two cover-side motor power supply female terminals 52 are formed to be opposed to each other. Further, as shown in FIG. 13, the motor-side motor power female terminal 51 and the cover-side motor power female terminal 52 are provided with contact protrusions 53 with their center portions projecting inward in the opposing direction of the female terminals. As a result, contact with the motor-side motor power male terminal 23 and the cover-side motor power male terminal 30 is ensured. Further, the connecting wall portion 48 corresponding to the back side of the motor-side motor power supply female terminal 51 is hollowed in a U shape, and the remaining portion is bent toward the inside of the rectangular tube portion, so that the motor-side motor power supply female terminal 51 A motor-side motor power female terminal stopper 54 that restricts the amount of elastic deformation is formed. Similarly, the cover-side motor power supply female terminal 52 is formed by hollowing out the connecting wall portion 48 corresponding to the back side of the cover-side motor power supply female terminal 52 in a U shape and bending the remaining portion toward the inside of the rectangular tube portion. A cover-side motor power supply female terminal stopper 55 that restricts the amount of elastic deformation of the cover is formed.

  Furthermore, in this embodiment, as will be described later, the motor side motor power male terminal 23 is inserted from the opening side of the motor side motor power female terminal portion 44, and the cover side motor power female terminal portion 45 is connected to the opposite side, that is, the bottom wall. Since the cover side motor power male terminal 30 is inserted from the portion 49 side, a cover side motor power male terminal insertion hole 56 for opening the cover side motor power male terminal 30 is formed in the bottom wall portion 49. Further, the motor side motor power female terminal side wall portion 46 is provided with a motor side motor power source female terminal peep hole 57 for viewing the state of the finished motor side motor power source female terminal 51. 47 is provided with a cover side motor power supply female terminal peephole 58 for viewing the state of the finished cover side motor power supply female terminal 52.

  As clearly shown in FIG. 11, both the motor-side motor power supply female terminal 51 and the cover-side motor power supply female terminal 52 are bent in a square shape, and the contact protrusion 53 is formed in the vicinity of the protruding portion. The square-shaped protrusions of the two motor-side motor power female terminals 51 are in contact with each other, and the motor-side motor power female terminal stopper 54 is positioned on the back side of the two motor-side motor power female terminals 51. The character-shaped protrusions of the female terminals 52 are displaced in the vertical direction, that is, the height direction in the figure, so-called offset, and the cover-side motor power supply female terminal stopper 55 is also opposed to the back side of each of the character-shaped protrusions. positioned. This is because the plate thickness of the cover-side motor power supply male terminal 30 and the motor-side motor power supply male terminal 23 are different, and the displacement amount of the cover-side motor power supply female terminal 52 is increased to cope with this difference in plate thickness. In addition, the protrusions of the two cover-side motor power female terminals 52 are shifted in the height direction.

  As shown in FIGS. 14 and 15, the intermediate terminal 42 is attached in a recess 60 of the actuator cover 14 from which the cover-side motor power male terminal 30 protrudes. At this time, if the intermediate terminal 42 is accommodated in the recess 60 so that the misassembly prevention claw 59 is accommodated in a relief portion (not shown) formed in the recess 60, it is possible to prevent the intermediate terminal 42 from being erroneously assembled. As shown in FIG. 15, when the intermediate terminal 42 is housed in the recess 60 so that the misassembly preventing claw 59 is accommodated in the escape portion, the cover-side motor power male terminal 30 is connected to the cover-side motor power female terminal from the bottom wall 49 side. 16, when the cover side motor power supply male terminal 30 is inserted into the cover side motor power supply male terminal insertion hole 56 and the intermediate terminal 42 is stored in the recess 60, the cover side The motor power male terminal 30 is sandwiched between two cover-side motor power female terminals 52, and both are connected. When the storage of the intermediate terminal 42 in the recess 60 is completed and the cover-side motor power male terminal 30 is connected to the cover-side motor power female terminal 52, the resin cap 43 is inserted into the recess 60 from the outside of the intermediate terminal 42. The resin cap 43 is fixed to the actuator cover 14 by covering, welding or adhesion.

  When the actuator cover 14 with the intermediate terminal 42 assembled in this way is attached to the actuator housing 13 as shown in FIG. 7, the motor side motor power male terminal 23 is connected to the motor side motor power female terminal portion 44 from the opening side. As shown in FIG. 17, the motor-side motor power male terminal 23 is sandwiched between the two motor-side motor power female terminals 51 and connected to each other. As a result, the cover-side motor power male male is connected via the intermediate terminal 42. Terminal 30 and motor side motor power male terminal 23 are connected.

  As described above, in the linear actuator of the present embodiment, when the swinging member 8 connected to the movable sheave 3b is swung to move the movable sheave 3b in the pulley axial direction, the rotational force of the electric motor 22 causes the deceleration mechanism to move. Then, the ball screw shaft (axial displacement element) 12 is displaced in the axial direction according to the amount of rotation, and the oscillating member 8 is oscillated according to the amount of displacement. At the same time, it is housed in the recess 60 of the actuator cover 14 and connected to the cover-side motor power male terminal 30 provided on the actuator cover 14 in the state of being housed in the recess 60. The intermediate terminal 42 connected to the motor-side motor power male terminal 23 provided in the electric motor 22 when the cover 13 is covered. Includes a cover-side motor power supply female terminal 52 that contacts the cover-side motor power supply male terminal 30 by elastic deformation in the width direction of the recess 60, a motor-side motor power supply female terminal 51 that contacts the motor-side motor power supply male terminal 23, and a recess. By forming the two side wall portions 46 and 47 for restricting the deformation of the 60 in the width direction, it is possible to suppress and prevent the cover-side motor power supply female terminal 52 and the motor-side motor power supply female terminal 51 from slipping over the intermediate terminal 42. Can do.

Further, the intermediate terminal 42 is provided with a cover side motor power supply female terminal stopper 55 and a motor side motor power supply female terminal stopper 54 that regulate the elastic deformation amount of the cover side motor power supply female terminal 52 and the motor side motor power supply female terminal 51. Accordingly, it is possible to further prevent and prevent the cover side motor power supply female terminal 52 and the motor side motor power supply female terminal 51 from slipping.
In addition, the intermediate terminal 42 is formed by bending a single metal plate, and the cover-side motor power supply female terminal 52 and the motor-side motor power supply female terminal 51 are arranged in parallel. It is easy to connect the motor-side motor power male terminal 23 and the intermediate terminal 42 to manufacture and manage.

  Further, one open end portion of the rectangular tube portion including the two side wall portions 46 and 47 and the two connecting wall portions 48 is covered with the bottom wall portion 49, and the two connecting wall portions 48 are opposite to the bottom wall portion 49. The end portion is bent inwardly of the rectangular tube portion to form two opposing cover-side motor power supply female terminals 52 and two opposing motor-side motor power supply female terminals 51, and the bottom wall portion 49 has a cover-side motor power supply. By forming the cover side motor power supply male terminal insertion hole 56 through which the male terminal 30 is inserted, the cover side motor power supply male terminal 30 and the motor side motor power supply male terminal 23 which are adjacent to each other can be easily connected even in the opposite direction, and the middle The terminal 42 is easy to manufacture and manage.

In addition, since the intermediate terminal 42 is housed in the recess 60, the recess 60 is covered with the resin cap 43, and the resin cap 43 is fixed to the actuator cover 14, so that the intermediate terminal 42 is assembled to the actuator cover 14. As a result, assembly is improved.
The motor-side motor power male terminal 23 is not necessarily provided in the electric motor 22, but is provided in the actuator housing 13 that houses the electric motor 22, and the electric motor is provided with individual wiring (including thin plate wiring). 22 may be connected.

  In the embodiment, since the intermediate terminal 42 is inserted into the recess 60 of the actuator cover 14 from the bottom wall 49 side, the cover-side motor power male terminal insertion hole 56 through which the cover-side motor power male terminal 30 is inserted is provided. Although provided on the bottom wall portion, the intermediate terminal 42 may be inserted into the concave portion 60 of the actuator cover 14 from the female terminal portion open side. A motor-side motor power supply male terminal insertion hole for inserting the terminal 23 is formed.

Further, the rotating element and the axial displacement element do not necessarily have to be a ball screw mechanism, and may be, for example, an ordinary bolt / nut combination.
The sensor 19 does not necessarily have to be a potentiometer, and various sensors can be applied as long as they detect the displacement in the axial direction of the ball screw shaft, which is an axial displacement element, directly in contact.
Further, the drive mode of the vehicle to which the continuously variable transmission and the linear actuator of the present invention are applied is not limited to the above-described embodiment. For example, it is a so-called hybrid vehicle that uses an engine and a motor together as a vehicle drive source. Also good.

  1 is an engine, 2 is a crankshaft, 3 is a driving pulley, 3a is a fixed sheave, 3b is a movable sheave, 4 is a belt (V-belt), 5 is a driven pulley, 5a is a fixed sheave, 5b is a movable sheave, and 6 is a final Gear, 7 linear actuator, 8 rocking member, 9 rocking connection structure, 10 ball screw mechanism, 11 ball screw nut, 12 ball screw shaft, 13 actuator housing, 14 actuator cover, 15 seal member, 16 is a bearing, 17 is a storage unit, 18 is a final gear, 19 is a sensor, 20 is a storage unit, 21 is a key, 22 is an electric motor, 23 is a motor-side motor power male terminal, 24 is a fixture, and 25 is a drive pinion. , 26 is an intermediate gear, 27 is an intermediate pinion, 28 is an intermediate shaft, 29 is a positioning engagement claw, 30 is a cover-side motor power male terminal, and 31 is a set. 32, a sensor power terminal, 33 a sensor ground terminal, 34 a sensor output terminal, 35 an arm, 36 a coupler, 37 a fixture, 38 a groove, 39 a sealing member, 40 a thin wiring, 41 Is a breather, 42 is an intermediate terminal, 43 is a resin cap, 44 is a motor-side motor power female terminal, 45 is a cover-side motor power female terminal, 46 is a motor-side motor power female terminal side wall, and 47 is a cover-side motor power. Female terminal side wall part, 48 is a connecting wall part, 49 is a bottom wall part, 50 is an insertion hole, 51 is a motor-side motor power female terminal, 52 is a cover-side motor power female terminal, 53 is a contact protrusion, 54 is a motor side Motor power female terminal stopper, 55 is a cover side motor power female terminal stopper, 56 is a cover side motor power male terminal insertion hole, 57 is a motor side motor power female terminal viewing window, and 58 is a cover side Over data supply female terminal peephole, 59 Ayamagumi preventing pawl 60 is concave

Claims (3)

A linear actuator that varies a pulley groove width of a belt-type continuously variable transmission, wherein the actuator housing, an actuator cover that covers the actuator housing, an electric motor attached to the actuator housing, and rotation generated by the electric motor A drive mechanism including a speed reduction mechanism that transmits force, a rotation element that inputs a rotational force of the electric motor via the speed reduction mechanism, and an axial direction displacement element that is displaced in the axial direction according to the amount of rotation of the rotation element; When the electric motor or the actuator housing is accommodated in the concave portion of the actuator cover and connected to the cover-side male terminal provided in the actuator cover in a state of being accommodated in the concave portion and the actuator cover covers the actuator housing. The provided mode An intermediate terminal connected to a side male terminal, wherein the intermediate terminal is elastically deformed in the width direction of the recess and is elastically deformed in the width direction of the recess. A cover-side female terminal that contacts the terminal and a motor-side female terminal that contacts the motor-side male terminal, and the intermediate terminal is formed by bending a single metal plate, and the cover-side female terminal and the motor-side terminal A female terminal is arranged in parallel, and further covers two connection wall portions that connect the two side wall portions, and one open end portion of the rectangular tube portion that includes the two side wall portions and the two connection wall portions. A pair of female terminals facing each other and two opposed motors by bending an end of the two connecting walls opposite to the bottom wall to the inside of the rectangular tube. A side female terminal is formed, and a cover side male terminal is formed on the bottom wall portion. Linear actuator, characterized in that the formation of the insertion hole is either the insertion of the motor-side male terminal.   2. The linear actuator according to claim 1, wherein the intermediate terminal includes a cover-side female terminal stopper and a motor-side female terminal stopper that regulate elastic deformation amounts of the cover-side female terminal and the motor-side female terminal. 3. The linear actuator according to claim 1, wherein after the intermediate terminal is housed in the recess, the recess is covered with a resin cap, and the resin cap is fixed to the actuator cover.

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