JP4405409B2 - Oscillating angle detecting device of oscillating member - Google Patents

Description

According to the present invention, a drive shaft movable in the axial direction is connected to a swing member that is swingably supported by a fulcrum arranged on a straight line perpendicular to the axis of the drive shaft, and the drive shaft is related to the fulcrum. on coupled to said swing member, the guide holes provided in the support member of fixed so as to extend in parallel to the drive shaft as a possible one end swing of the operating shaft which is arranged on the straight line opposite the A detection rod of a sensor fixed to the support member is connected to the operation shaft that is slidably inserted so as to detect the swing angle of the swing member according to the axial position of the operation shaft. The present invention relates to a swing angle detection device for a swing member.

For a vehicle in which a detection rod of a sensor fixed to a support member is connected to an operating shaft attached to one end of the mirror holder, and the swing angle of the mirror holder is detected by detecting the axial position of the operating shaft. A mirror device is disclosed in Patent Document 1, for example.
US Pat. No. 6,094,027

  However, in the one disclosed in Patent Document 1, the posture is inclined 45 degrees with respect to a straight line connecting the connecting portion of the drive shaft to the mirror holder, the fulcrum of the mirror holder, and the connecting portion of the operating shaft to the mirror holder. The sensor is fixedly arranged. On the other hand, the connecting portion of the operating shaft to the mirror holder moves in the direction along the straight line as much as allowed by the gap between the inner surface of the guide hole and the outer surface of the operating shaft according to the swing of the swing member. Yes, the operating shaft swings in the guide hole accordingly, so in the structure where the sensor is fixedly arranged at an angle of 45 ° with respect to the straight line as in the conventional case, the detection rod in the sensor is Since the force acts from the direction inclined 45 degrees, the position of the detection rod becomes an uneasy point, and consequently the accuracy of detecting the axial position of the operating shaft by the sensor becomes unstable. Leads to.

  The present invention has been made in view of such circumstances, and an object of the present invention is to provide a swing angle detecting device for a swing member that can detect the swing angle of the swing member with high accuracy.

In order to achieve the above object, the present invention is such that a drive shaft that is movable in the axial direction is coupled to a swing member that is swingably supported by a fulcrum arranged on a straight line perpendicular to the axis of the drive shaft. is, above said drive shaft with respect to the fulcrum end portion of the actuating shaft arranged on the straight line on the opposite side is connected to the rocking member as swingably, fixed so as to extend parallel to the drive shaft A detection rod of a sensor fixed to the support member is slidably inserted into a guide hole provided in the support member, and the swinging member swings according to the axial position of the operation shaft. In the swing angle detecting device for swing members connected so as to detect an angle, the operating shaft swings about a swing axis perpendicular to a plane including the straight line and the axis of the operating shaft. Can be supported by the support member One said is inserted into the guide hole to the detection rod having said pivot axis coaxial with the axis of the actuating shaft is coupled to the actuating shaft the actuating shaft about its axis as possible to swing It is characterized by.

According to the above configuration of the present invention, the connecting portion of the operating shaft to the swing member is connected to the swing member of the drive shaft according to the swing of the swing member, the fulcrum of the swing member, and the operating shaft. By moving in the direction along the straight line connecting the connecting portions to the swing member, the operating shaft swings about the swing axis perpendicular to the plane including the straight line, but the detection rod swings the operating shaft. Since it has an axis that is coaxial with the dynamic axis and is connected to the operating shaft so that the operating shaft can be swung around the axis, the position of the detection rod can be adjusted regardless of the swinging of the operating shaft in the guide hole. Can be stably maintained at a position corresponding to the axial position of the operating shaft, so that the accuracy of detecting the axial position of the operating shaft by the sensor is stabilized, and the accuracy of detecting the swing angle of the swing member by the sensor is increased. be able to.

  DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below based on one embodiment of the present invention shown in the accompanying drawings.

  1 to 11 show an embodiment of the present invention, and FIG. 1 is a partially cutaway front view of a vehicle door mirror to which the present invention is applied, taken along line 1-1 in FIG. 2 is a cross-sectional view taken along line 2-2 of FIG. 1, FIG. 3 is an enlarged front view of a part of the actuator case, FIG. 4 is an exploded perspective view of the actuator case, drive means connector, and sensor connector, and FIG. 5 is an enlarged sectional view taken along line 5-5, FIG. 6 is an enlarged sectional view taken along line 6-6 in FIG. 3, FIG. 7 is an enlarged front view of the second housing portion, and FIG. 8 is an enlarged sectional view taken along line 8-8 in FIG. 9 is a cross-sectional view for explaining the movement of the operating shaft in response to the swing of the mirror holder, FIG. 10 is a view taken in the direction of arrow 10 in FIG. 8, and FIG. 11 is an explanation for application to an actuator case that does not require a sensor. FIG.

  First, in FIGS. 1 and 2, a base body 15 is attached to a side door of a vehicle, and a housing 16 made of synthetic resin can be rotated back and forth of the vehicle so that the base body 15 can be rotated. It is supported by.

  A bracket 17 made of synthetic resin is rotatably supported by the base body 15, and the housing 16 covering the bracket 17 is attached to the bracket 17 by a plurality of screw members 18. The peripheral edge of a visor 19 that extends into the housing 16 and is attached to the housing 16 is connected to the opening edge of the housing 16, and a mirror 23 held by a mirror holder 20 that is a swinging member is connected to the vehicle. It is arranged in the visor 19 so that the rear side can be visually recognized.

  The mirror holder 20 includes a holder main portion 21 to which the mirror 23 is attached on the outer surface side, and an inner holder 22 fixed to the inner surface side of the holder main portion 21, and the mirror holder 20 is fixed to the bracket 17. The actuator case 24 is supported so that it can swing back and forth and from side to side.

  The mirror holder 20 is swingably supported by the actuator case 24 at an intersection point P of the first straight line LA extending in the vertical direction and the second straight line LB extending in the horizontal direction. A pair of first and second drive shafts 25 </ b> A and 25 </ b> B to be driven are allowed to move in the axial direction and protrude from the actuator case 24, and the pair of first and second operation shafts 26 </ b> A and 26 </ b> B are coupled to the mirror holder 20.

  The first drive shaft 25A has an axis perpendicular to the first straight line LA and is disposed below the intersection point P, and one end of the first drive shaft 25A includes a plane including the first straight line LA. The second drive shaft 25B is arranged on the outer side of the intersection point P with an axis perpendicular to the second straight line LB, and is connected to the mirror holder 20 so as to be able to swing inside. One end of the second drive shaft 25B is connected to the mirror holder 20 so as to be able to swing in a plane including the second straight line LB. The first operating shaft 26A is disposed on the first straight line LA on the side opposite to the first drive shaft 25A with respect to the intersection point P, and one end portion of the first operating shaft 26A has the first straight line LA. The second operating shaft 26B is arranged on the second straight line LB on the opposite side to the second drive shaft 25B with respect to the intersection point P. Yes, one end of the second operating shaft 26B is connected to the mirror holder 20 so as to be able to swing in a plane including the second straight line LB.

  The distance between the connecting portion of the first drive shaft 25A to the mirror holder 20 and the intersection point P and the distance between the connecting portion of the second drive shaft 25B to the mirror holder 20 and the intersection point P are set to be the same. The distance between the connecting portion of the shaft 26A to the mirror holder 20 and the intersection point P and the distance between the connecting portion of the second operating shaft 26B to the mirror holder 20 and the intersection point P are set to be the same. In addition, in this embodiment, the connecting portion of the first drive shaft 25A to the mirror holder 20, the connecting portion of the second drive shaft 25B to the mirror holder 20, the connecting portion of the first operating shaft 26A to the mirror holder 20, and the second The distance between the connecting portion of the operating shaft 26B to the mirror holder 20 and the intersection point P is set to be the same, so that the inner holder 22 in the mirror holder 20 can be used on both sides.

  The actuator case 24 includes first drive means 27A for driving the first drive shaft 25A in the axial direction, second drive means 27B for driving the second drive shaft 25B in the axial direction, and axial positions of the first working shaft 26A. Accordingly, the first sensor 28A for detecting the swing angle of the mirror holder 20 and the mirror 23 in the plane including the first straight line LA, and the second straight line LB according to the axial position of the second operating shaft 26B. A second sensor 28 </ b> B for detecting the swing angle of the mirror holder 20 and the mirror 23 in the plane that includes it is incorporated.

  Referring also to FIG. 4, the actuator case 24 has a first housing 31 for housing the first and second driving means 27A and 27B and a second housing for housing the first and second sensors 28A and 28B. A case main body 34, which is a synthetic resin support member formed by integrally connecting a portion 32 via a connecting portion 33, and the mirror holder 20 are supported in a swingable manner, and the first and second drive shafts 25A, 25B. The first housing member 31 that covers the first housing portion 31 from the mirror holder 20 side and the first and second operating shafts 26A and 26B can be inserted into the second housing. The second cover member 36 made of synthetic resin covers the part 32 from the mirror holder 20 side.

  Referring also to FIG. 5, a cylindrical support shaft 37 protrudes integrally on the outer surface of the first lid member 35 so as to place an axis line at the intersection point P of the first and second straight lines LA and LB. A support seat surface 38 that faces the mirror holder 20 and has a circular arc cross section is provided so as to surround the support shaft 37. On the other hand, the inner holder 22 of the mirror holder 20 has a receiving portion 39 on which an outer surface and an inner surface are formed so as to have an arcuate cross-sectional shape having the same center as the support seat surface 38 having an arcuate cross-section. Are integrally provided, and the outer surface of the receiving portion 39 is in sliding contact with the support seat surface 38. Further, a holding member 40 having an outer surface with an arc-shaped cross section that is in sliding contact with the inner surface of the receiving portion 39 is attached to the supporting shaft 37 that enters the receiving portion 39 so as to be movable in the axial direction. A spring 43 that biases the clamping member 40 in a direction in which the receiving portion 39 is sandwiched between the support seat surface 38 and the clamping member 40 is contracted between the retainer 42 and the clamping member 40 that are fixed to the tip by the screw member 41. .

  In this way, the inner holder 22 constituting a part of the mirror holder 20 is supported by the first lid member 35 of the actuator case 24 so as to be swingable so that the receiving portion 39 is slidably contacted with the support seat surface 38. Will be.

  The first drive means 27A includes an electric motor 45A, a worm gear 46A provided on the output shaft of the electric motor 45A, and a worm wheel 47A meshing with the worm gear 46A and screwing with the first drive shaft 25A. .

  The worm wheel 47A is formed so as to surround the first drive shaft 25A coaxially and is rotatably supported by the first housing portion 31. On the other hand, a male screw 48 is engraved on the outer surface of the first drive shaft 25A, and a plurality of, for example, five arm portions 50 having inner teeth 49 to be screwed into the male screw 48 at the tip are provided in the circumferential direction or the like. It is integrally connected to the worm wheel 47A at an interval. Further, of the respective arm portions 50..., Projecting portions 51... Projecting outward are projected at the tips of some of the arm portions 50, and projecting outwardly on the outer surfaces of the remaining arm portions 50. Projections 52 are projected, and springs 53 are wound around all the arm portions 50 so as to prevent axial movement between the projections 51... 52. Due to this spring force, the inner teeth 49 at the tip of each arm 50 are screwed into the male screw 48 of the first drive shaft 25A.

  A spherical head 54 is integrally provided at one end of the first drive shaft 25A, and this spherical head 54 is fitted to a bearing portion 55 provided in the inner holder 22 of the mirror holder 20 so as to be able to swing. Combined. Moreover, the spherical head 54 is provided with an engaging protrusion 56 extending along the first straight line LA so that the engaging protrusion 56 is engaged with a locking slit 57 provided in the bearing portion 55. Thus, the spherical head 54 is fitted into the bearing portion 55. As a result, one end of the first drive shaft 25A is coupled to the inner holder 22 of the mirror holder 20 while preventing rotation about the axis and allowing the head to swing in a plane including the first straight line LA. become.

  The second drive means 27B has an electric motor 45B, a worm gear 46B provided on the output shaft of the electric motor 45B, and a worm wheel 47B that meshes with the worm gear 46B and is screwed with the second drive shaft 25B. The first drive means 27A is configured in the same manner, and one end portion of the second drive shaft 25B is prevented from rotating around its axis and swings in a plane including the second straight line LB. As possible, it is connected to the inner holder 22 of the mirror holder 20.

  The first and second drive means 27A and 27B pass through the intersection point P of the first and second straight lines LA and LB and pass through the center between the first and second drive shafts 25A and 25B (see FIG. 3). And are accommodated in the first accommodating portion 31.

  On the peripheral edge of the first accommodating portion 31, a fitting wall portion 58 that is connected in an endless manner so as to surround the first and second driving means 27A, 27B is provided so as to protrude toward the first lid member 35, and A fitting groove 59 that is endlessly connected so as to fit the fitting wall portion 58 is provided in the peripheral portion of the one lid member 35. Thus, the first lid member 35 covering the first housing part 31 so as to fit the fitting wall 58 in the fitting groove 59 is elastically applied to the first housing part 31 at a plurality of circumferential positions, for example, four places. Engaged. That is, as shown in FIG. 6, engaging claws 60 are projected at a plurality of, for example, four places spaced apart in the circumferential direction of the first lid member 35, and the respective engagements of the first housing portion 31. A portion corresponding to the claw 60 is integrally provided with a locking portion 62 formed in a gate shape so as to form a locking hole 61 for elastically engaging the engaging claw 60. .

  The first lid member 35 is integrally provided with cylindrical portions 63A and 63B for projecting the first and second drive shafts 25A and 25B toward the mirror holder 20 side. The cylindrical portions 63A and 63B Both ends of the boots 64A and 64B surrounding the first and second drive shafts 25A and 25B are attached to the outer periphery and the outer periphery near one end of the first and second drive shafts 25A and 25B.

  In the outer peripheral portion of the first accommodating portion 31, a flange portion 65 is provided on the first and second drive means 27A, 27B, which is located between the worm wheels 47A, 47B. In the driving means 27A and 27B, flange portions 66 and 67 are provided at portions located outside the electric motors 45A and 45B, respectively. On the other hand, the first lid member 35 is provided with flanges 68, 69, and 70 that overlap with the flanges 65 to 67, respectively, and the flanges 65 to 67 and 68 to 70 that overlap each other are screw members 71. Are fastened to the brackets 17 respectively.

  Further, corresponding to the connecting portion 33 that connects the first and second accommodating portions 31 and 32, the first lid member 35 is integrally provided with a flange 72 that overlaps the connecting portion 33 and overlaps with each other. The flange 72 and the connecting portion 33 are fastened to the bracket 17 by a screw member 73.

  7 and 8, the second housing portion 32 has bottomed guide holes 75A and 75B having a right-angled quadrilateral cross-sectional shape and closed at the end opposite to the second lid member 36. The first and second operating shafts 26A and 26B are provided so as to be slidably inserted, and have a bottomed mounting hole having a right-angled square cross-sectional shape and closed on the opposite side to the second lid member 36. 76A and 76B are provided at positions adjacent to the guide holes 75A and 75B so as to insert and fix the first and second sensors 28A and 28B.

  A fitting wall portion 77 connected in an endless manner is provided at the peripheral portion of the second housing portion 32 so as to protrude toward the second lid member 36, and the fitting portion is provided at the peripheral portion of the second lid member 36. A fitting groove 78 that is endlessly connected so as to fit the wall portion 77 is provided. Thus, the second lid member 36 covering the second housing portion 32 so as to fit the fitting wall 77 in the fitting groove 78 is elastically applied to the second housing portion 32 at a plurality of circumferential positions, for example, five locations. Engaged.

  That is, on the side surface of the second lid member 36 opposite to the first lid member 35, a plurality of, for example, three engaging claws 79 are projected from the side surface of the second housing portion 32 with a space therebetween. Locks formed in a gate shape so as to form locking holes 80 (see FIG. 4) for elastically engaging the engaging claws 79 are formed in portions corresponding to the respective engaging claws 79. ... Are provided integrally.

  In the second lid member 36, a plurality of, for example, two engaging claws 82... Are integrally formed on the side surface on the first lid member 35 side so that the tip portion is bifurcated and extends to the second housing portion 32 side. These engaging claws 82 are inserted into locking holes 83 provided in the connecting portion 33 and are elastically engaged with the connecting portion 33.

  The first operating shaft 26 </ b> A is basically a right-angled quadrilateral but has a cross-sectional shape in which each corner is rounded, and a neck 85 at one end of the operating shaft main portion 84. Between the spherical head 86 connected through the first straight line LA and the other end of the operating shaft main portion 84 in a plane including the first straight line LA. A pair of curved sliding contact portions 87 and 87 formed so as to be curved, and a pair of leg portions 88 which are bifurcated in a plane orthogonal to the first straight line LA and continue to the other end side of the operating shaft main portion 84. And 89.

  The other end side of the first operating shaft 26A is inserted into the guide hole 75A, and both the curved sliding contact portions 87... Are spring forces of the leaf springs 90 attached to the inner surfaces of the curved sliding contact portions 87. Thus, the guide holes 75A are elastically slidably brought into contact with the mutually opposing inner surfaces.

  The mounting hole 76A is provided in the second accommodating portion 32 so as to be adjacent to the guide hole 75A on the inner side thereof. The partition hole between the guide hole 75A and the mounting hole 76A has a guide hole 75A and a mounting hole 76A. A slit 91 extending in the longitudinal direction is provided.

  The sensor 28A inserted and fixed in the mounting hole 76A is a linear potentiometer, and is accommodated and fixed in a metal sensor case 92 so that the brush 94 slides on a substrate 93 provided with a resistor. The brush 94 is provided with a detection rod 96A extending in a direction perpendicular to the plane including the first straight line LA and the axis of the first operating shaft 26A, and the detection rod 96A includes the slit. It faces the 91 side and is inserted through an opening 95 provided in the sensor case 92.

  The tip end of the detection rod 96A is connected to the other end portion of the first operation shaft 26A by mutual fitting by pressing the first operation shaft 26A in the axial direction against the detection rod 96A in a stationary state.

  In FIG. 9, in order to connect the tip of the detection rod 96 </ b> A, one leg 88 on the other end side of the first operating shaft 26 </ b> A has a slit-shaped connecting portion extending in a direction along the axis of the first operating shaft 26 </ b> A. 97, and the connecting portion 97 is formed so that the width of the inner end becomes smaller than the diameter of the detection rod 96A, and the width becomes narrower toward the inside, and the outer end is formed. The open guide part 97a, the circular fitting part 97b connected to the inner end of the guide part 97a so as to fit the detection rod 96A, and the fitting having a width narrower than the diameter of the detection rod 96A The groove portion 97c is continuous with the portion 97b.

  On the other hand, a substantially T-shaped dovetail groove 98 opened on the inner surface of the guide hole 75A on the side opposite to the sensor 28A is provided in the second housing portion 32, and is fitted in the fitting portion 97b. A guide protrusion 99 formed in a substantially T shape by a shaft portion 99a coaxial with the detection rod 96A and an engagement portion 99b connected to the tip of the shaft portion 99a is provided on the other end side of the first operating shaft 26A. The leg portion 89 is integrally projected.

  As a result, the first operating shaft 26A swings around the axes of the detection rod 96A and the shaft portion 99a of the guide projection 99 that are orthogonal to and coaxial with the plane including the first straight line LA and the axis of the first operating shaft 26A. The detection rod 96A having an axis coaxial with the swing axis of the first operating shaft 26A is inserted into the guide hole 75A while being supported by the second housing portion 32 so as to be movable. However, the first operating shaft 26A can be swung around its axis, and is connected to the first operating shaft 26A.

  Further, in the second housing portion 32, a stopper 100A that abuts the tip of the detection rod 96A and determines the limit of movement of the detection rod 96A to the side opposite to the mirror holder 20 is provided in the guide portion 97a of the connecting portion 97. And projecting integrally from the closed end of the guide hole 75A.

  The spherical head portion 86 at one end of the first operating shaft 26A is fitted to the bearing portion 101 provided on the inner holder 22 in the mirror holder 20 so as to be able to swing. Moreover, the spherical head 86 is provided with an engaging protrusion 102 extending along the first straight line LA so that the engaging protrusion 102 is engaged with a locking slit 103 provided in the bearing 101. Thus, the spherical head portion 86 is fitted into the bearing portion 101. Accordingly, one end portion of the first operating shaft 26A is connected to the inner holder 22 of the mirror holder 20 so as to be prevented from rotating about its axis and to swing in a plane including the first straight line LA. Become.

  The second operating shaft 26B is configured in the same manner as the first operating shaft 26A and is slidably inserted into the guide hole 75B. The sensor 28B is configured in the same manner as the sensor 28A and is inserted and fixed in the mounting hole 76B. 75B and the mounting hole 76B are symmetrical to the guide hole 75A and the mounting hole 76A with respect to a plane PL passing through the intersection point P of the first and second straight lines LA and LB and passing through the center between the first and second drive shafts 25A and 25B. It is provided in the 2nd accommodating part 32 in the position. Further, one end portion of the second operating shaft 26B is coupled to the inner holder 22 of the mirror holder 20 so as to be prevented from rotating about its axis and to be able to swing in a plane including the second straight line LB. Further, the second operating shaft 26B can swing about an axis perpendicular to the plane including the second straight line LB and the axis of the second operating shaft 26B, and is supported by the second housing portion 32 so as to be supported in the guide hole 75B. The detection rod 96B of the sensor 28B that is inserted is connected to the second operating shaft 26B so that the second operating shaft 26B can be swung around an axis that is coaxial with the swinging axis of the second working shaft 26B. A stopper 100B is provided at the closed end of the guide hole 76B so as to contact the tip of the 96B and determine the limit of movement of the detection rod 96B to the side opposite to the mirror holder 20.

  On the second lid member 36, cylindrical portions 105A, 105B having a quadrangular cross section for projecting the first and second operating shafts 26A, 26B are integrally projected so as to project toward the mirror holder 20, Both ends of the boots 106A and 106B surrounding the first and second operation shafts 26A and 26B are mounted on the outer periphery of the cylinder portions 105A and 105B and the outer periphery near one end of the first and second operation shafts 26A and 26B. Is done.

  By the way, between the sensors 28A and 28B, the second housing portion 32 includes bus bars 107 and 108 connected to the output terminals of the sensors 28A and 28B, a bus bar 109 connected to the power supply terminals of the sensors 28A and 28B, and both sensors 28A. , 28B, a bus bar assembly 112 in which a bus bar 110 connected in common with a ground terminal is covered with a synthetic resin covering portion 111 is disposed. In addition, a recess 113 is provided on the surface of the second housing portion 32 opposite to the second lid member 36, and connection terminals 107 a, 108 a, 109 a, formed by bending a part of the bus bars 107 to 110. 110 a is arranged facing the recess 113.

  Referring also to FIG. 10, a sensor connector 114 having terminals connected to the connection terminals 107 a to 110 a is detachably fitted in the recess 113. In addition, a recess 120 is provided on the surface of the first housing portion 31 opposite to the first lid member 35, and is connected to the pair of connection terminals 115 and 116 to be connected to the electric motor 45A and the electric motor 45B. A drive means connector 119 having a pair of power connection terminals 117 and 118 is detachably fitted to the recess 120.

  Next, the operation of this embodiment will be described. The actuator case 24 includes a case main body 34 in which the first and second storage portions 31 and 32 are integrally connected via the connection portion 33, and the first storage portion 31. The first cover member 35 includes a first cover member 35 and a second cover member 36 that covers the second storage portion 32. The first storage portion 31 has first and second ends connected to the mirror holder 20 in a swingable manner. The first and second drive means 27A and 27B that individually drive the two drive shafts 25A and 25B in the axial direction are accommodated, and one end of the second accommodation portion 32 is coupled to the mirror holder 20 so as to be able to swing. The first and second sensors 28A and 28B for detecting the axial positions of the first and second operating shafts 26A and 26B, that is, the swing angle of the mirror holder 20, are accommodated, and the first lid member 35 is provided with the first and second sensors 35A and 28B. 2 drive shafts 25A, 2 Covering the first housing portion 31 so as to protrude B, second cover member 36 is used as allowing for inserting the first and second actuating shaft 26A, and 26B to cover the second container portion 32.

  By the way, as shown in FIG. 11, the door mirror actuator case 122 having a function of only driving the mirror holder by visual remote operation includes a case main body 121 that accommodates the first and second drive means 27A and 27B, What is necessary is just to be comprised with the cover member 35 which covers the case main body 121, In such an actuator case 122, the 1st cover member 35 in the above-mentioned actuator case 24 can be shared.

  That is, the case main body 121 has the flange portion 123 corresponding to the flange portion 72 of the first lid member 35 and has a shape substantially corresponding to the first housing portion 31, thereby sharing the first lid member 35. And an actuator case 122 of a vehicle mirror device having a function of only driving a mirror holder by visual remote operation as a mold when the first lid member 35 is molded. It can be shared to reduce costs.

  In addition, the first accommodating portion 31 that accommodates the first and second driving means 27A and 27B and the second accommodating portion 32 that accommodates the first and second sensors 28A and 28B are integrally connected via the connecting portion 33. Therefore, it is possible to easily manage and adjust the parts accuracy in increasing the relative dimensional accuracy between the swing fulcrum of the mirror holder 20 and the operating parts of the sensors 28A and 28B, and to reduce the assembly man-hours.

  By the way, the sensors 28A and 28B fixed to the second housing portion 32 of the case main body 34 are provided on the other end sides of the first and second operating shafts 26A and 26B, one end of which is connected to the mirror holder 20 so as to be able to swing. The detection rods 96A and 96B are connected by mutual fitting by pressing the first and second operation shafts 26A and 26B in the axial direction against the detection rods 96A and 96B in a stationary state. The second housing portion 32 is provided with stoppers 100A and 100B that abut the tip portions of the detection rods 96A and 96B and determine the movement limit of the detection rods 96A and 96B to the side opposite to the mirror holder 20.

  Therefore, when the distal ends of the detection rods 96A and 96B are fitted and connected to the other ends of the first and second operating shafts 26A and 26B, the distal ends are brought into contact with the stoppers 100A and 100B to be in a stationary state. The first and second operating shafts 26A and 26B may be pressed in the axial direction with respect to the detection rods 96A and 96B, and the leading ends of the detection rods 96A and 96B are received by the stoppers 100A and 100B. Therefore, bending stress does not act on the detection rods 96A and 96B from the first and second operating shafts 26A and 26B. Further, even when an abnormal external force acts on the mirror holder 20 and the first and second operating shafts 26A and 26B move by a predetermined value or more, the detection rods 96A and 96B are detected by the tips of the stoppers 100A and 100B receiving Bending stress does not act on the rods 96A and 96B. As a result, when the tip ends of the detection rods 96A and 96B are fitted and connected to the other ends of the first and second operating shafts 26A and 26B, the first and second operating shafts 26A and 26B move by more than a specified value. In any of the states, the bending stress is prevented from acting on the detection rods 96A and 96B, the deformation of the detection rods 96A and 96B is surely prevented, and a decrease in detection accuracy of the sensors 28A and 28B can be avoided. it can.

  Moreover, the first and second operating shafts 26A, 26B made of synthetic resin are inwardly provided on the legs 88 provided on the other end side so that the inner end width is smaller than the outer diameter of the detection rods 96A, 96B. A guide portion 97a that is formed to have a width that decreases toward the front and that has an outer end opened; Since a slit-like connecting part 97 having a width narrower than the diameter of the rods 96A and 96B and having a groove part 97c connected to the fitting part 97b is provided, the detection rods 96A and 100B in a state received by the stoppers 100A and 100B are provided. When the first and second operation shafts 26A and 26B are pressed against 96B, the first and second operation shafts 96A and 96B are grooved. 7c can be smoothly guided from the guide portion 97a to the fitting portion 97b to be fitted into the fitting portion 97b while elastically deforming so as to widen the width of 7c, and the detecting rods 96A, 96B can be fitted. The front end of the first and second operating shafts 26A and 26B can be easily fitted and connected to the other end.

  Further, the first and second operating shafts 26A, 26B are swung around an axis perpendicular to a plane including the first and second straight lines LA, LB and the axes of the first and second operating shafts 26A, 26B. A detection rod which is inserted into the guide holes 75A and 75B while being supported by the second housing portion 32 of the case main body 34 as possible, and has an axis coaxial with the swing axis of the first and second operating shafts 26A and 26B. 96A and 96B are connected to the first and second operating shafts 26A and 26B so that the first and second operating shafts 26A and 26B can be swung around their axes.

  Therefore, as shown in FIG. 9, the connecting portion of the first operating shaft 26 </ b> A to the mirror holder 20 is connected to the mirror holder 20 of the first drive shaft 25 </ b> A according to the swing of the mirror holder 20. And the first operating shaft 26A is moved in a direction along the first straight line LA that connects the connecting portion of the first operating shaft 26A to the mirror holder 20, so that the first operating shaft 26A becomes the first straight shaft LA and the first operating shaft. The detection rod 96A moves in the guide hole 75A while swinging around an axis perpendicular to the plane including the axis of 26A. The detection rod 96A has an axis that is coaxial with the swing axis of the first operating shaft 26A. Since the first operating shaft 26A can be swung to be coupled to the first operating shaft 26A, the position of the detection rod 96A can be determined regardless of the swinging of the first operating shaft 26A in the guide hole 75A. First operating shaft 2 A can be stably maintained at a position corresponding to the axial position of A. Therefore, the accuracy of axial position detection of the first operating shaft 26A by the sensor 28A is stabilized, and the first straight line LA of the mirror holder 20 by the sensor 28A is stabilized. The accuracy of detecting the swing angle within a plane including

  The second operating shaft 26B also moves in the guide hole 75B while swinging around an axis perpendicular to the plane including the second straight line LB and the axis of the second operating shaft 26B in response to the swing of the mirror holder 20. Accordingly, the detection rod 96B has an axis coaxial with the swing axis of the second operating shaft 26B, and is capable of swinging the second operating shaft 26B around the axis and is connected to the second operating shaft 26B. Therefore, the position of the detection rod 96B can be stably maintained at a position corresponding to the axial position of the second operating shaft 26B regardless of the swinging of the second operating shaft 26B in the guide hole 75B. Therefore, the axial position detection accuracy of the second operating shaft 26B by the sensor 28B can be stabilized, and the swing angle detection accuracy in the plane including the second straight line LB of the mirror holder 20 by the sensor 28B can be increased.

  Although the embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments, and various design changes can be made without departing from the present invention described in the claims. It is.

  For example, in the above-described embodiment, the case where the present invention is applied to the detection of the swing angle of the mirror holder 20 in the door mirror has been described, but the present invention can be widely implemented as a device that detects the swing angle of the swing member. .

FIG. 3 is a partially cutaway front view of a vehicle door mirror to which the present invention is applied, and is a view taken along line 1-1 in FIG. 2. FIG. 2 is a sectional view taken along line 2-2 of FIG. It is a partially notched enlarged front view of an actuator case. It is an exploded perspective view of an actuator case, a drive means connector, and a sensor connector. FIG. 5 is an enlarged sectional view taken along line 5-5 of FIG. FIG. 6 is an enlarged sectional view taken along line 6-6 of FIG. It is an enlarged front view of a 2nd accommodating part. FIG. 8 is an enlarged sectional view taken along line 8-8 in FIG. 1. It is sectional drawing for demonstrating the movement of the operating shaft according to rocking | fluctuation of a mirror holder. FIG. 10 is a view taken in the direction of arrow 10 in FIG. 8. It is a perspective view for demonstrating the application to the actuator case which made the sensor unnecessary.

20 ... Mirror holders 25A, 25B as swing members ... Drive shafts 26A, 26B ... Actuating shafts 28A, 28B ... Sensors 34 ... Case main bodies 75A, 75B as support members Guide holes 96A, 96b ... detection rods LA, LB ... straight lines

Claims (1)

A swing in which a drive shaft (25A, 25B) movable in the axial direction is supported so as to be swingable at a fulcrum arranged on a straight line (LA, LB) orthogonal to the axis of the drive shaft (25A, 25B). One end of an operating shaft (26A, 26B) connected to the member (20) and disposed on the straight line (LA, LB) on the opposite side of the drive shaft (25A, 25B) with respect to the fulcrum can swing. coupled to said swing member (20) slidably inserted into said drive shaft (25A, 25B) and extending parallel to manner fixing of the support member (34) provided is the guide hole (75A, 75B) as The detection rods (96A, 96B) of the sensors (28A, 28B) fixed to the support member (34) are positioned on the operation shafts (26A, 26B) in the axial direction of the operation shafts (26A, 26B). According to the rocking member 20), the operating shaft (26A, 26B) is connected to the straight line (LA, LB) and the operating shaft (26A, 26A, 26B). 26b) is inserted into the guide holes (75A, 75B) while being supported by the support member (34) so as to be able to swing around a swing axis perpendicular to a plane including the axis of 26b), and the operating shaft (26A, It said detection rod (96A with the pivot axis coaxial with the axis of the 26B), 96B) is, the actuating shaft as possible to swing the said actuating shaft about the axis of (26A, 26B) (26A, 26B And a swing angle detecting device for a swing member.

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