JPH115491A - Device for detecting inclination angle of mirror in back mirror for vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a device for detecting an inclination angle of a mirror in a back mirror for vehicle, which can make defective operations due to rain water minimum. SOLUTION: This device for detecting an inclination angle of a mirror is formed out of a plug electrically connecting its mirror unit with external electrical equipment, an actuator 20, a spring 27 bringing the actuator 20 into contact with the mirror unit, a sliding element 32 located over the actuator 20, a film resistor 31 that is disposed along the moving direction of the sliding element 32 so as to be brought into contact with the sliding element 32, a supporting body 30 for the film resistor 31, a socket to be electrically connected with the aforesaid plug electrically connected with the sliding element 32 and the film resistor 31, and of a case which can be mounted/demounted, and is composed of two portions interposing a packing 17 therebetween. In this case, one end of the portion of the actuator 23 exposed out of the case is blocked, the other end is covered with a bellows 28, and the socket is formed out of a hole 45 provided for the case in a shape capable of being closely adhered to the insulating body 41 of the plug, and of contacts 37 which are positioned at the hole 45 at their one portion so as to be packaged onto the supporting body 30, and are brought into contact with the contacts of the plug.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for detecting a tilt angle of a mirror in a vehicle rearview mirror.

[0002]

2. Description of the Related Art An after-photograph in which an optimum tilt angle of a mirror is electrically detected, and this detection signal is stored, so that even if the tilt angle is changed later, it is possible to easily return to an optimum position. Mirrors are known. Such a rearview mirror is described, for example, in Japanese Utility Model Application Laid-Open No. S60-148144.

In this rearview mirror, a mirror unit having a mirror is supported by a tilt unit via a ball joint, and is tilted about the ball joint by a drive mechanism in the tilt unit moving the mirror unit. ing. There are two devices for detecting the tilt angle of the mirror.Each device is installed in the tilt unit orthogonal to each other around the ball joint so as to detect the vertical tilt and the horizontal tilt of the mirror unit. ing.

[0004] Each of the devices for detecting the tilt angle of the mirror includes:
The actuator, a spring for bringing the actuator into contact with the back of the mirror unit, a slider held by the actuator, a film resistor arranged along the direction of movement of the slider, a support for the film resistor, and a case for accommodating them. Have. The actuator is composed of a rod and a support in the form of a substantially cube having a size larger than the rod.The rod is projected from a hole in the case to the outside, and is slidably held in the case, and The tip of the rod is brought into contact with the rear surface of the mirror unit by a spring disposed between the mirror unit and the mirror unit. The support is made of a printed wiring board on which a film resistor is mounted, and is disposed inside the case and incorporated in the case so that the film resistance is along the moving direction of the support of the actuator. The slider contacts the film resistance,
Attached to the support.

[0005] The tilt of the mirror unit in the vertical direction is determined by pushing the actuator of one of the devices by the mirror unit, moving the slider through the film resistance, and adjusting the output voltage of the potentiometer composed of the slider and the film resistance. By changing, the inclination in the left-right direction is detected by pushing the actuator of the other device by the mirror unit and changing the output voltage of the potentiometer in this device.

[0006]

However, in such a rearview mirror, when the vehicle on which the rearview mirror is installed travels in the rain, rainwater may enter the device for detecting the mirror tilt angle, resulting in malfunction. is there. That is, in the above-described device, there is a gap between the actuator and the hole in the case in order to move the actuator, and the hole is incorporated in the tilt unit toward the mirror unit. For this reason, when the vehicle runs, rainwater is pushed into the mirror housing from the gap between the mirror unit and the mirror housing, and penetrates into the device from the gap between the rod and the hole in the case, thereby reducing the film resistance. Wet,
It loses its function as a potentiometer.

SUMMARY OF THE INVENTION It is an object of the present invention to provide an improved apparatus for detecting a mirror tilt angle in a rearview mirror for a vehicle, which can prevent malfunction due to rainwater.

[0008]

In order to achieve the above object, the present invention includes a plug for electrically connecting a mirror unit and an external device, an actuator, a spring for bringing the actuator into contact with the mirror unit, and a spring on the actuator. A slider, a film resistor arranged along the moving direction of the slider, and a film resistor in contact with the slider, a support of the film resistor, and electrically connected to the slider and the film resistor;
A socket that is connected to the plug, and a case that includes a detachable two part, in which a part of the actuator projects outside and the socket is exposed on the surface to incorporate these elements, One part forming is attached to the other part with packing interposed,
A portion of the actuator that is exposed from the case is closed at one end, and an open end at the other end is covered by a bellows connected to the case, and the socket is provided in a case having a shape that closely fits into the insulator of the plug. And a device for detecting the angle of inclination of the mirror in the vehicular rearview mirror, comprising a contact mounted on the support with a part positioned in the hole, the contact being in contact with a contact of a plug. To provide.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS In a device for detecting a mirror inclination angle in a vehicular rearview mirror according to the present invention, a vehicle having a rearview mirror incorporating the same runs in the rain, and rainwater flows through a mirror of a mirror unit. Even if it is pushed from between the housing,
Since the part of the actuator that is exposed to the outside of the case is sealed with a bellow, not only does rainwater enter the inside of the device, but also the plug for connecting to the controller etc. on the vehicle body fits tightly in the case. Rainwater does not enter inside. And
Since the part forming the case is detachably attached via packing, not only does rainwater enter the inside of the case, but also incorporates actuators, springs, supports with film resistance mounted, etc. In addition, it is easy to access the inside of the case for adjustment and maintenance after assembly.

An embodiment of an apparatus for detecting a mirror inclination angle in a vehicle rearview mirror according to the present invention will be described below with reference to the drawings.

The device for detecting the tilt angle of the mirror is for a rearview mirror for an automobile, and is incorporated in a mirror housing. When the mirror unit is tilted up and down and left and right, an electric signal corresponding to the tilt angle is provided. Is output.
The device itself includes an actuator, a spring for bringing the actuator into contact with the back surface of the mirror unit, a slider on the actuator, and a film resistor arranged along the moving direction of the slider, and the actuator is a mirror unit. When the slider moves along with the inclination of the slider, the slider moves on the film resistor to change the output voltage of the potentiometer constituted by the slider and the film resistor.

1 to 5, reference numeral 10 denotes a case, and an actuator 20, a spring 27,
An element such as a printed wiring board 30 that supports the film resistor 31 is housed and held. The case itself has a substantially hollow box shape having a case upper part 11 and a case lower part 12. The case upper part 11 is provided with an opening 45 on the side surface, substantially corresponds to the width of the case upper part 11, and is provided with a rectangular protrusion 13 on the lower surface that is shorter than the entire length of the case upper part 11. The protrusion 13 has a square opening 14 communicating with the internal space of the case upper part 11 at the center, and is provided with a packing groove 13a on the entire side surface. Further, depressions 15 are provided on both side surfaces of the case upper part 11. The depression 15 has a substantially square shape, and the bottom thereof has a protrusion 1.
The case 3 is provided on the case upper part 11 so as to be on the same plane as the side surface. The case lower part 12 has an internal space of a size related to the protrusion 13 of the case upper part 11 and has a substantially box-like shape with an open upper surface. It is growing. The attachment to the case upper part 11 is performed by fitting the arm 16 to the recess 15 in the case upper part 11 and fitting it into the protrusion 13 of the case upper part 11.
Is sealed with the case upper part 11 by a packing 17 fitted in the packing groove 13a. An opening 19 is provided in the arm 16 of the case lower part 12, and a projection 18 is provided on the bottom surface of the recess 15 of the case upper part 11 as well shown in FIGS. When the 12 is inserted into the upper case 11, the tip of the arm 16 bends over the protrusion 18, and then the upper edge of the opening 19 contacts the protrusion 18 to prevent the lower case 12 from coming out of the upper case 11. doing.

The actuator 20 comprises a rod 21 and a support 22. The rod 21 has a substantially cylindrical shape. The support 22 is substantially in the form of a rectangular parallelepiped having a width corresponding to the diameter of the rod 21, and is disposed at a lower portion of the rod 21 while being offset from or parallel to the longitudinal center axis of the rod 21. 2
1 is coupled to a neck 21a extending horizontally from the lower end of the first. The actuator 20 passes the rod 21 through a through hole 11a formed in the upper wall of the case upper part 11, and connects the neck 21a between the rod 21 and the support 22 to the case upper part 11.
1, the end face of the support 22 is placed on the guide 24 extending downward from the upper wall of the case upper part 11, and the side face of the support 22 is placed on the case upper part 11.
The two guides 25 on one side wall are respectively brought into contact with each other and incorporated into the case 10. A spring receiver is provided on the inner bottom surface of the case lower part 12. The spring receiver is a spring guide 26 in the form of a conical pillar with a rounded tip.
And an annular groove 26 a provided around the spring guide 26 on the inner bottom surface of the case lower part 12. The coil spring 27 is connected to the rod 2 at the support neck 21a.
1 is located on the lower end of the case 1 and on the inner bottom surface of the case lower part 21, and the lower end is seated in the annular groove 26 a of the spring receiver and fitted in the spring guide 26.
The actuator 20 is pushed up by the coil spring 27 so that the tip of the rod 21 constantly projects outside the case 10, and is guided by the through holes 11a, the guides 23, 23a, the guide 24, and the guide 25. The coil spring 27 is held by the spring guide 26, is positioned by being fitted into the annular groove 26a, and moves smoothly because the fall is small. Here, only the lower end of the coil spring 27 is held by the spring guide 26 and the annular groove to achieve both the positioning and the assembling property. A spring receiver in which the upper end fits may be provided. Also,
When the actuator 20 moves to a position where the lower surface of the support 22 contacts the inner bottom surface of the case lower portion 12, the support 22 of the actuator 20 is displaced from the central axis in the longitudinal direction of the rod 21, and the lower surface of the neck 21a and the support 22 are displaced. The distance G from the lower surface of the
Is longer than the distance F between the apex of the case and the inner bottom surface of the case lower part 12, so that the spring guide 26 can enter the space between the lower surface of the neck 21a and the side surface of the support 22. For this reason, the effective movement length J of the actuator 20
Is large, the height H of the case 10 is small.

The bellows 28 are closed at one end and open at the other end. The bellows 28 cover the region of the rod 21 protruding from the case 10 and the upper part 11 of the case.
Is fitted in a protrusion 29 around the hole 11a passing therethrough. The connection with the case upper part 11 is made by fitting the projection on the inner surface of the bellows 28 into the annular groove on the outer surface of the projection 29. Rod 2
The front end of the bellows 28 fits into a concave portion on the inner surface of the closed end of the bellows 28 to prevent the bellows 28 from falling down.

As shown in FIG. 4, the printed wiring board 30 includes guides 23a and 23b on the side facing the side having the guide 25 on the upper case 11 and the lower case 12 on the case.
Are held by the guides 12a and 12b on the bottom surface and are pressed by the guide 24. The guide 23a has an L-shaped cross section and is the same length as the guide 23. Guides 12a and 12b are guides 2
It has the same L-shaped cross section as 3a and 23b, and is provided on the lower surface of the case lower portion 12 so that the L-shaped groove faces the guides 23a and 23b and is connected to the guides 23a and 23b. The printed wiring board 30 is a guide 23
a, 23b and guides 12a, 12b hold four side edges. There are two carbon film resistors 31 and are formed on the surface of the printed wiring board 30 along the moving direction of the support 22. As shown in FIG. 5, the slider 32 has a flat back plate 33 and two brushes 34 extending substantially in an inverted U shape from the upper edge of the back plate. , Each of the brushes 34 is fitted to the support 22 so as to straddle the upper portion of the support 22. When fitted, the brush 34 becomes the carbon film resistor 31.
, The opening 35 of the back plate 33 fits into the protrusion 36 of the support 22, and the slider 32 is positioned. The contact 37 has a flat Z-shape as shown in FIG. 4, and has one end fixed to the printed wiring board 30 and a free end extending toward the side opening 45 of the case upper part 11. Are mounted on the printed wiring board, and the middle is pressed by a projection 38 extending from the guide 24. This contact 37 is formed around the contact 37 on the upper part 11 of the case,
It constitutes a socket for a plug in a wire harness that makes electrical connections to external devices.

The plug is, as shown in FIG.
Is provided. One end of the insulator 41 has a contact 37
A hole 42 is provided in the insulator, and a contact holding a contact 37 (not shown) is incorporated in the insulator with a part thereof positioned in the hole 42. The wire harness 40 is drawn into the insulator 41 from the opposite end of the insulator 41 and is connected to a contact. The insulator itself is composed of two substantially rectangular portions having different cross-sectional sizes. A triangular groove 43 is provided in the upper and lower walls of the front part, and a groove 44 having one end opened at the end face of the insulator is provided on one side surface of the front part.

The socket for this plug is formed in the area around the contact 37 in the upper part 11 of the case, as described above. 3 to 5, the side opening 45 of the case lower part 12 in the case upper part 11 also forms a part of the socket. The outer portion 46 of the opening 45 is formed of a square hole having a shape and a size corresponding to the rear portion of the insulator 41 of the plug. The inner portion 47 corresponds to a front portion of the plug insulator 41 in which a projection 48 that fits into the groove 43 of the plug is formed on the upper and lower side walls, and a protrusion 49 that fits into the groove 44 of the plug is formed on the side wall. It has a square hole having a shape and a size.

The device for detecting the tilt angle of the mirror is incorporated in a rearview mirror of an automobile, for example, as shown in FIGS.

This rearview mirror has a mirror housing 60, a mirror unit 61, a positioning unit 62, a tilt unit 63, and a mirror base 64. The positioning unit 62 projects the mirror housing 60 from the side of the vehicle body. The tilt unit 63 tilts the mirror unit 61 up and down and right and left by rotating between a use position that gives the driver a rear view and a storage position where the driver falls down along the side of the vehicle body.

The positioning unit 62 has a known structure. The rotating side portion is fixed to the mirror housing 60, the non-rotating side portion is exposed to an opening on the lower surface of the mirror housing 60, and the exposed portion is a mirror base. 64. The tilt unit 63 is incorporated into the mirror housing 60 adjacent to the positioning unit 62, and is fixed to the mirror housing 60. The mirror unit 61 has a mirror 65 and a holder 66 for supporting the mirror. The sphere on the back of the mirror holder 66 is held by a ball seat 67 on the tilt unit 63, and the back of the mirror holder 66 is tilted. The two rods 68 and 69 of the unit 63 are connected via ball joints, and the rod 68 moves in front and back of the plane of the drawing to tilt left and right. By moving toward the front and back of the paper, the vertical inclination can be performed about the ball joint.

An apparatus for detecting the tilt angle of a mirror according to the present invention is indicated generally by the reference numeral 50 and is arranged around the tilt unit 63 at an angle of 90 ° to each other, and the mirror The two boxes 51 provided in the housing 60 are fitted into each of the two boxes 51 to be incorporated into a rearview mirror, and each of them detects a vertical tilt angle and a horizontal tilt angle of the mirror 65.

Each box 51 has a square hole 52 into which the device 50 fits. In these boxes 51, a pair of long side walls 53 facing each other are higher than another pair of side walls 54 arranged orthogonally. Further, a wall 56 is provided at the center of the box 51. This intermediate wall 56 is arranged in parallel with the side wall 53 and is formed integrally with the mirror housing 60. These side walls 53 and 54 and the intermediate wall 56 are such that when the device 50 is fitted into the box 51, the intermediate wall 56 contacts the bottom surface of the case lower part 12 and the side wall 54 overhangs from the case lower part 12 in the case upper part 11. The device 50 is set on the mirror housing 60 at a predetermined height by contacting the lower surfaces of the portions 11b.

On the other hand, a device 50 for detecting the tilt angle of the mirror
Has a leaf spring 57 mounted on the case upper part 11, as shown in FIGS. The leaf spring 57 has a shape that fits into the recesses 15 on both sides of the case upper part 11, has a square opening 58 in the center, and bends the lower edge of the area where the opening 58 is formed outward. Is formed as a projecting piece 59. Before the lower case 12 is fitted into the upper case 11, the lower case 12 is fitted into the recess 15 before the lower case 12 is fitted into the upper case 11. Through the protruding piece 59. At this time, the leaf spring 57
The small semicircular projection 57a on the upper side of the flat plate together with the small semicircular recess 15a on the upper side of the recess 15 regulates the fitting direction of the leaf spring 57.

The mounting of the device 50 on the mirror housing 60 is performed after the positioning unit 62 has been incorporated into the mirror housing 60. The tilt unit 63 is then incorporated into the mirror housing 60, and the mirror unit 61 is subsequently incorporated. The installation of the mirror unit 61
This is performed by holding a ball in the mirror holder 66 on a ball seat 67 in the tilt unit 63.

At this time, the mounting of the device 50 can be performed by simply fitting the case 10 into the box 51 in the mirror housing 60. That is, the device 50
When the case 10 is fitted into the hole 52 of the box 51, the intermediate wall 56 contacts the bottom of the case lower part 12, and
The bottom surface of the part 11b of the case upper part 11 that overhangs from the case lower part 12 contacts the side wall 54, and
0 is set in the mirror housing 60 at a predetermined height,
The tip of the actuator 20 contacts the glass substrate of the mirror 65 through a hole in the mirror holder 66 via the bellows 28. When the device 50 is inserted into the box 51, the projecting piece 59 of the leaf spring 57 is
3, which is pushed back towards the device 50,
When the device 50 is positioned by the side walls 53, 54 and the intermediate wall 56, as shown in FIG. 8, the projecting piece 59 presses against the inner surface of the side wall 53 by the repulsive force, and prevents the device 50 from coming out of the box 51. . At this time, the device 5
The recess 15 for mounting the leaf spring 57 at 0
For example, as shown in FIG. 6, the box 51 located on the right side has a notch for fitting a part of the tilt unit 63 into the left side wall 53, and the box located on the upper side as shown in FIG. Each of the devices 50 is provided with a notch 51 so that a part of the tilt unit 63 can be fitted into the lower side wall 53 and the actuator 20 or the bellows 28 face each other.
1, the leaf spring 57 is attached to the recess 15 on the right side of the device 50 mounted on the box 51 on the right side, and the device 50 mounted on the box 51 on the upper side. Depression 15 on the right
The same device 50 can be mounted on both the boxes 51 by mounting the leaf spring 57 on the both sides.

Installation of the assembled rearview mirror on the automobile is performed by fastening the mirror base 64 to the vehicle body. The device 50 for detecting the tilt angle of the mirror is connected to the controller in the driver's seat of the automobile together with the tilt unit 63 and the positioning unit 62 by the wire harness 40.

The wire harness 40 for the device 50
Is made by aligning the hole 42 of the plug with the contact 37 and fitting the insulator 41 into the opening 45. When fitted, the projection 48 shown in FIG. 3 fits into the groove 43 to prevent the plug from coming out, and the front part of the insulator fits tightly with the inner part 47 of the opening 45, and the rear part is outside the opening 45. Fits snugly in section 46.

When the driver performs the tilting operation of the mirror by the controller, the tilt unit 63 tilts the mirror unit 61 up and down or left and right, and the actuator 22 in each of the devices 50 causes the coil spring 27 to flex while the tilting unit 63 tilts. The slider 32 on the support 22 moves while contacting the carbon film resistor 31, and outputs a voltage related to the tilt angle of the mirror unit 61 to the controller. The controller stores in the memory a signal related to the angle when the mirror 65 is tilted to a position that gives the driver the optimum rear view, and after storing the signal, the mirror unit 61 is tilted to return the mirror 65 to the optimum position at any time. To be able to do.

When the vehicle travels, dust enters the inside of the mirror housing 60 through a gap between the mirror unit 61 and the mirror housing 60, and when the vehicle is driven in rain, rainwater flows between the mirror unit 61 and the mirror housing 60. The air blows into the interior of the mirror housing 60 from a gap between the mirror housings 60, and the device 50 for detecting the mirror tilt angle is exposed to dust and rainwater. Is the actuator 20
The portion protruding from the case 10 is sealed by a bellows 28, and dust and rainwater do not enter between the actuator 20 and the hole of the case 10, so that the actuator 20 can always slide smoothly. Since the plug is sealed and the plug of the wire harness 40 is exactly inserted into the socket of the case 10, dust and rainwater do not enter the inside of the case 10. Therefore, the potentiometer constituted by the carbon film resistor 31 and the slider 32 always operates reliably, and the conduction between the plug and the socket is always ensured.

Further, even after maintenance on the device 50 for detecting the tilt angle of the mirror after installation on the vehicle body, that is, readjustment, repair, replacement, etc. of the actuator 20, the spring 27, and the potentiometer, the plug is required. Can be easily removed to the outside by pulling the device 50 out of the box 51 and pulling the device 50 out of the box 51. In addition, by pulling the bellows 28 out of the case 10 and removing the case lower part 12 from the case upper part 11, the actuator Inside and outside of 20, and
All of the elements or parts inside the case are easily accessible and after processing, the bellows 28
By fitting the case lower part 12 and the plug into the socket, the device 50 is sealed again, and there is no intrusion of dust, rainwater or the like into the inside.

[0031]

As described above, the apparatus for detecting the tilt angle of the mirror according to the present invention does not allow rainwater to enter the inside.
Since reliable operation can always be performed, a highly reliable rearview mirror can be obtained.

[Brief description of the drawings]

FIG. 1 is a front view showing an embodiment of an apparatus for detecting a tilt angle of a mirror in a vehicle rearview mirror according to the present invention.

FIG. 2 is a side view.

FIG. 3 is a sectional view taken along line AA of FIG. 2;

FIG. 4 is a sectional view taken along the line BB of FIG. 3;

FIG. 5 is an exploded perspective view.

FIG. 6 is a front view showing an example of a state in which it is incorporated into a rear-view mirror;

FIG. 7 is a sectional view taken along line CC of FIG. 6;

FIG. 8 is a sectional view taken along line DD of FIG. 6;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 ... Case 11,12 ... The part which forms a case 17 ... Packing 20 ... Actuator 27 ... Spring 28 ... Bellows 32 ... Slider 31 ... Coating resistance 30 ... Supporting body 37 ... Contact 41 ... Plug insulator 45 ... Case Hole 61… Mirror unit

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[Procedure amendment]

[Submission date] July 3, 1997

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] 0005

[Correction method] Change

[Correction contents]

[0005] The vertical tilt of the mirror unit changes the output voltage of a potentiometer consisting of the slider and the film resistor by pushing the actuator of one of the devices by the mirror unit to move the film resistance of the slider. As a result, the tilt in the left-right direction is pushed by the mirror unit of the actuator of the other device,
This is detected by changing the output voltage of a potentiometer in this device.

[Procedure amendment 2]

[Document name to be amended] Statement

[Correction target item name] 0006

[Correction method] Change

[Correction contents]

[0006]

However, in such a rearview mirror, when the vehicle on which the rearview mirror is installed travels in the rain, rainwater may enter the device for detecting the mirror tilt angle, resulting in malfunction. is there. That is, in the above-described device, there is a gap between the actuator and the hole in the case in order to move the actuator, and the hole is incorporated in the tilt unit toward the mirror unit. For this reason, when the vehicle runs, rainwater is pushed into the mirror housing from the gap between the mirror unit and the mirror housing, and penetrates into the device from the gap between the rod and the hole in the case, thereby reducing the film resistance. Wet,
It loses its function as a potentiometer .

[Procedure amendment 3]

[Document name to be amended] Statement

[Correction target item name] 0011

[Correction method] Change

[Correction contents]

The device for detecting the tilt angle of the mirror is for a rearview mirror for an automobile, and is incorporated in a mirror housing. When the mirror unit is tilted up and down and left and right, an electric signal corresponding to the tilt angle is provided. Is output.
The device itself includes an actuator, a spring for bringing the actuator into contact with the back surface of the mirror unit, a slider on the actuator, and a film resistor arranged along the moving direction of the slider, and the actuator is a mirror unit. When the slider moves with the inclination of the slider, the slider moves on the film resistor, and the pot
The output voltage of the shock meter is changed.

[Procedure amendment 4]

[Document name to be amended] Statement

[Correction target item name] 0029

[Correction method] Change

[Correction contents]

When the vehicle travels, dust enters the inside of the mirror housing 60 through a gap between the mirror unit 61 and the mirror housing 60, and when the vehicle is driven in rain, rainwater flows between the mirror unit 61 and the mirror housing 60. The air blows into the interior of the mirror housing 60 from a gap between the mirror housings 60, and the device 50 for detecting the mirror tilt angle is exposed to dust and rainwater. Is the actuator 20
The portion protruding from the case 10 is sealed by a bellows 28, and dust and rainwater do not enter between the actuator 20 and the hole of the case 10, so that the actuator 20 can always slide smoothly. Since the plug is sealed and the plug of the wire harness 40 is exactly inserted into the socket of the case 10, dust and rainwater do not enter the inside of the case 10. Therefore, the potentiometer constituted by the carbon film resistor 31 and the slider 32 always operates reliably, and the conduction between the plug and the socket is always ensured.

[Procedure amendment 5]

[Document name to be amended] Statement

[Correction target item name] 0030

[Correction method] Change

[Correction contents]

Further, even if the maintenance of the device 50 for detecting the tilt angle of the mirror after installation on the vehicle body, that is, readjustment, repair, replacement, etc. of the actuator 20, the spring 27, and the potentiometer are required. By pulling out the plug from the socket of the device 50 and pulling the device 50 out of the box 51, the plug can be easily taken out, and also by removing the bellows 28 from the case 10 and removing the case lower portion 12 from the case upper portion 11. The device 50 can be easily accessed in and out of the actuator 20 and all of the elements or components inside the case, and after processing, by fitting the bellows 28 and the case lower part 12 and plugging in the socket, the device 50 Again sealed, dust and rainwater etc inside Intrusion is not.

Claims (1)

[Claims] An actuator, a spring for bringing the actuator into contact with the mirror unit, a slider on the actuator, and a slider arranged along a moving direction of the slider, the plug including a plug for electrically connecting the mirror unit and an external device. And a film resistor in contact with the slider, a support for the film resistor, and electrically connected to the slider and the film resistor,
A socket that is connected to the plug, and a case that includes a detachable two part, in which a part of the actuator projects outside and the socket is exposed on the surface to incorporate these elements, One part forming is attached to the other part with packing interposed,
A portion of the actuator that is exposed from the case is closed at one end, and an open end at the other end is covered by a bellows connected to the case, and the socket is provided in a case having a shape that closely fits into the insulator of the plug. And a contact which is mounted on the support with a part positioned in the hole and which comes into contact with a contact of a plug. Device to detect.