JPS60193741A - Car outer mirror - Google Patents

Abstract

PURPOSE:To effectively relieve the occurrence of a chattering phenomenon and to perform smooth and quiet inclining operation of a mirror, by a method wherein a mirror retainer body is supported to a mirror case at 4 points of up, down, right, and left based on a central rotary part. CONSTITUTION:A casing 4, containing 2 driving systems, including electric motors 5a and 5b, is located to the back of a mirror retainer body 3 in a mirror case and is secured thereto. By means of the power of the driving system, the mirror 2 is rotated around a longitudinal axis Y-Y and a lateral axis X-X togetherwise the retainer body 3. A pair of guide rollers 10a and 11a, and a pair of 10b and 11b, located centering around a coupling part 4a and one at each side thereof, are rotatably mounted to the casing 4 along the lateral axis X-X and the longitudinal axis Y-Y. The guide belts 10a, 11a, 10b, and 11b are brought into frictional contact with belts 14a and 14b, respectively, and thereby no clearance is produced therebetween, the chattering is prevented from occurring, resulting in film constitution.

Description

[Detailed Description of the Invention] The present invention relates to so-called outer mirrors such as fender mirrors and door mirrors of automobiles. Specifically, the present invention relates to so-called outer mirrors such as fender mirrors and door mirrors of automobiles. The present invention relates to an outer mirror designed to prevent chattering of the mirror due to driving vibrations and wind pressure.

The structure of this type of outer mirror is generally as follows. That is, the approximately central part of the back of the mirror support is rotatably connected to a predetermined location on the outer surface of this drive system storage casing using a universal joint method, and the mirror is attached to either the top or bottom of the connection part on the back of the mirror. One end of one mirror push/pull operation shaft for tilting the mirror in the vertical direction, and one end of one mirror push/pull operation shaft for tilting the mirror left or right in the left/right direction are each attached to a universal joint system. while their respective other ends are introduced into the casing. The other end of each mirror push/pull operation shaft is provided with an outer circumferential screw, and a rotary tube that cannot be moved in the axial direction is screwed onto the outer circumference of this screw, and is housed in the casing. The motor drive mechanism rotates this rotation direction to move the mirror push/pull operation shaft in the axial direction, thereby tilting the mirror.

However, in the outer mirror configured as above,
Due to the vibrations and wind pressure that occur when a car is running,
There was a problem in that a slight vibration, or chatter phenomenon, occurred in the mirror, making the image reflected on the mirror unclear.

The above-mentioned problem lies in the method of supporting the mirror support body 31 in the drive system housing casing. In other words, there is a certain amount of clearance in the center rotating part using the universal joint system, and there is also backlash between the outer circumferential screw of each mirror push/pull operation shaft and the inner circumferential screw in the rotating direction that is screwed into it. This causes the above-mentioned microvibration, that is, the chatter phenomenon. Another reason is that the mirror is fixed to the casing by a total of two mirror push/pull operation shafts, one up or down and one left or right with respect to the medium heat rotation part. The mirror is not supported by the casing on either the upper or lower side or the left or right side of the rotating portion, and therefore, the mirror is likely to vibrate.

Therefore, this J5 light is one of the causes of the chatter phenomenon.
If you replace the 14M screw feed of the mirror push/pull operation shaft with a rotating cylinder and adopt a friction feed mechanism that does not cause backlash or clearance between the drive side and the non-drive side, the result will be 11.1.
The purpose is to have a structure in which the mirror support body is supported against the mirror case at a total of four points on the upper, lower, and right sides of the medium-heat rotating part, thereby effectively alleviating or preventing the chattering phenomenon of the mirror. shall be.

Book 1 is missing! 1- In order to achieve the above object, the present invention was constructed as follows.

That is, the mirror case is aligned with the internal position on both sides along each of the vertical and horizontal axes, centering on the rotation center of the mirror support.
Four belt guide rollers are arranged, and the bell 1 is wrapped around a pair of rollers along the vertical axis and a pair of rollers along the horizontal axis, and both ends of each belt are fixed to the back surface of the mirror support body, At least one roller of each pair of rollers was connected to the drive system and was configured to be rotationally driven.

According to the above configuration, in a normal state, the pair of belts is stretched with a constant tension between the fixed points on the mirror support and through each pair of belt guide rollers.
The mirror or mirror support body is supported with respect to the mirror case using a four-point support structure. Therefore, compared to the conventional example which had a two-point support structure, the mirror and the mirror support plate are firmly held against the mirror case. The chatter phenomenon during driving of a car is effectively alleviated or prevented.

In the above configuration, when the drive system is driven 1, a desired belt guide roller is rotated, and the belt is forcibly moved in a predetermined direction due to the friction between the roller and the belt. The mirror rotates together with the mirror support, thereby obtaining the desired mirror angular position. In this way, since the power transmission method between each belt guide roller and each belt is a friction method, there is no clearance between the two, and therefore, as long as the belt is stretched with sufficient tension,
The belt does not rattle against the roller, that is, the drive system storage casing or mirror case to which the roller is fixed, and therefore the mirror chattering phenomenon is effectively prevented.

As described above, the intended object of the present invention is achieved by the above structure.

BACKGROUND 1U1 A preferred embodiment of the present invention will be described in detail below.

Figs. 1 and 2 show a schematic configuration of an outer secondary mirror for an automobile, and Fig. 3 shows an exploded state of the main parts. In the illustrated embodiment, the mirror 2 is supported from its back side! The mirror support 3 is disposed and supported on the front of the mirror case 1 so as to be tiltable, and a casing 4 housing two drive systems including electric motors 5a and 5b is installed behind the mirror support 3 inside the mirror case. The mirror 2 is arranged and fixed, and the mirror 2 is rotated together with the mirror support 3 around the vertical axis Y-Y and around the horizontal axis X-X by the power of the drive system. The mirror support 3 is a casing 4
It is connected to the front surface of the head in the form of a universal diagonal, which is substantially the same as a conventionally known structure. 1. That is, a spherical portion 3a is formed approximately at the center of the rear surface of the mirror support 3, and a bearing connecting portion 4a rotatably supports the spherical portion 3a at approximately the center of the front surface of the casing 4. is forming. Thus, the mirror 2 can be tilted together with the mirror support 3 within a certain range about the vertical axes YY and XX.

As mentioned above, the casing 4 fixed at 161 to the mirror case 1 (this fixing structure is not shown in detail) has a first
, As shown in Figure 2, the horizontal axis X-X and the vertical axis Y-Y
A pair of belt guide rollers 10a, 11, a are provided on both sides of the connecting portion 4a along the connecting portion 4a: 1011
, 11b are rotatably mounted. As clearly shown in FIG. 2, these rollers are arranged in such a way that a portion of each of them protrudes outward from the casing 4 and extends through its central axes 9a, 12a; 9b, 12b. It is rotatably attached to a predetermined position of the casing 4. , and each belt guide roller 10a, 10b; 11a, 11
A flange 13 is provided on both sides of the rim, and worm gears 8a and 8b are provided on the sides of the flange.

a pair of guide rollers 10a along the pair of horizontal axes XX;
A belt 14a passing through the back side of the casing 4 is passed over the lla (both ends 14c of the belt 14a are connected to belt stoppers 15a and 1t3 formed on the back side of the mirror support 3).
J is fixed on a, and it is fixed on a. Similarly, the belt 14 is attached to a pair of guide rollers iob and 1ib along the vertical axis.
Another belt 14b passing through the outside of the mirror support 3 is looped around, and both ends of the belt are fixed to belt stoppers 15b and 16b formed on the back surface of the mirror support 3, respectively. Note that the material of each of the belts is not particularly limited, but each of the guide rollers 1
0a, 11a; A material having a large coefficient of friction with respect to 1011, 1111 is preferable.

Iζ belt stopper portions 15a, 16a shown in FIG. 3: 1
5b and 16b show the simplest structure, each consisting of an L-shaped protrusion A and a stopper protrusion B placed a little apart from the free end of the L-shaped protrusion. On the other hand, each belt 1
Each end 14cμ of 4a and 14b is folded back to form a ring. Thus, each ring-shaped end 14c of each belt 14a, 14b is inserted from between the free end of each belt stopper into the 1-shaped protrusion and the 6-shaped protrusion At.
-It is attached by inserting it into the ring of the first part 14c. In this way, when each end 14C of each bell I 14a, 14b is attached to the L-shaped protrusion A, the stopper protrusion B is adjacent to the L-shaped protrusion A, so that the number can be easily removed. There isn't.

On the other hand, there are two drive systems within the casing 4, namely, a drive system for driving the belt 14a along the horizontal axis XX, and a drive system for driving the belt 14b along the vertical axis Y-Y. is located. That is, each drive system is a reversibly rotatable electric motor 5a.

51), and worms 7a and 7b are mounted on the outer periphery of the output shafts 6a and 6b of the motor, and each worm 7a is
.

7b is engaged with the A-mom 1-wheels 8a and 8b.

In addition, each of the above-mentioned belts 14a, 14b G, L each guide 0-ra 10a.

11a: 10b and jib are stretched with sufficient tension of 1 fJ and not too strong.

In the embodiment with the above configuration, when the mirror 2 is not tilted in the normal state, the mirror support 2 supporting the mirror 2 is connected to the connecting portion 4a of the casing 4, and the connecting portion The guide rollers 10a, lla: 10b, 11b, and therefore the casing 4 and mirror case 1, are firmly and stably supported with appropriate tension via belts 14a, 14b at four points on the top, bottom, left and right of the This means that And also each guide belt 10a, 11a; 10b, 11b and each belt 1
Since 4a and 14b are in contact with each other so as to rub against each other, no clearance occurs between them. Therefore, the mirror support body 3 is firmly positioned with respect to the mirror case 1 with almost no wobbling, and minute vibrations 1, that is, chatter phenomenon of the mirror are less likely to occur while the automobile is running.

When adjusting the angle of the mirror 2, a mirror control switch installed in the vehicle is operated to drive the desired motor 5a or 5b. For example, by rotating the motor 5a in the normal or reverse direction, the guide roller 10a is rotated in the normal or reverse direction via the worm 7a and the A-me gear 8a, thereby moving the belt 14a in either direction by friction. In this case, the other guide roller 11a serves as a driven roller and the belt 14
It rotates as a moves. In this way, the belt 14a
If the rotation shifts, the mirror support 3 and therefore the mirror 2 will move together by 1", which allows the mirror 2 to rotate in the left-right direction, that is, around the vertical axis Y-Y. This causes the mirror to tilt in the left-right direction. The angle is adjusted.

Furthermore, when one motor 5b is driven, the guide roller 10b rotates, and the other guide roller 11b rotates as a result, so that the belt 14b is rotated.
is moved in a desired direction, thereby allowing the mirror support 3 to rotate together with the mirror in the vertical direction, that is, around the horizontal axis X-X, thereby adjusting the angle of the mirror in the top-h direction. can be done.

According to the above drive method, each guide roller 10a, Ila
: Since the motion horn transmission method between the belts 10b and llb and each of the belts 14a and 14b is a friction method, the belts move extremely quietly and smoothly. Furthermore, according to the embodiment described above, a portion of each guide roller 10a, Ila; Even if abrasion powder of the bell 1- is generated due to this contact, it will enter the casing 4 and, therefore, failure of the drive system will be effectively prevented.

By the way, in this second automobile outer mirror, it is necessary to be able to manually adjust the angle of the mirror in case, for example, the drive IJ system breaks down. When the belts 14a and 14b are forcibly rotated around the horizontal axis X-x or the vertical axis Y-Y by placing a hand on the belts 14a and 14b, the guide rollers 10a, 11a; 11b, the angle can be easily adjusted manually.

In the above embodiment, a special mechanism for adjusting the tension of the belts 14a and 14b is not shown, but a belt tension adjustment mechanism as shown in FIG. 16a, and one of the pair of belt stoppers 15b, 16b along the vertical axis.
A belt tension adjustment mechanism as shown in Fig. 4.5 may be adopted for b.

In FIGS. 4 and 5, reference numeral 15c denotes a reel for stopping the ends 14c of the belts 14a and 14b and for winding the belts. It is rotatably supported in shaft holes 3d of bearing protrusions 3b and 3c. This reel 15c is shaped like a round bar and has a slit 15d extending in the axial direction formed in its center, and the end portion 14c of each belt is inserted into the slit 15d and folded to one side to form a ring. The ends are fastened. As clearly shown in FIG. 5, a part of the outer surface of the end 15c of the belt wound around the reel 15c is attached to each of the other protrusions 3e and 31 protruding from the back surface of the mirror support 3. F.J.
Bite into your face!'t! I try to do that. To adjust the tension of the belt, insert a screwdriver (not shown) into the groove 150 formed at one end of the reel 15c and turn
°Do it by doing it. The reel 15c is located at the end 1 of the belt.
Since the reel 40 is bitten into the protrusion 3e or 3[, a strong frictional force acts thereon, and the reel 15c stops at the rotated position.

As detailed above, according to the above embodiment, the chattering phenomenon of the mirror can be effectively alleviated or prevented, and
It is possible to perform a large and quiet mirror tilting operation, and furthermore, manual angle adjustment of the mirror can be easily performed without any trouble.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, and FIG. 1 does not show the drive system storage casing 4 cut away, but shows the rear surface lIi of the outer mirror.
2 is a cross-sectional view taken along line Y--Y in FIG. 1, and FIG.
2 is an exploded perspective view of the main parts of the mirror, FIG. 4 is a cross-sectional view showing the belt tension adjustment mechanism, and FIG. 5 is FIG. 4 IV-I.
It is a sectional view taken along the V line. DESCRIPTION OF SYMBOLS 1... Mirror case, 2... Mirror, 3... Mirror support body, 3a... Spherical part, 3b, 3c... Bearing protrusion, 3d... Shaft hole, 30.3 (...・Protruding part, 3g・
...I! ! Friction surface, 4... Drive system storage casing, 4a
...Connection portion, 5a, 5b...Electric motor, 6a. 6 b...Output shaft, ? a, 7b--warm, 8
a, 8b...A-me gear, 9a, 9b...
Shaft, 10a, 10b...belt guide roller, lla,
111+...Belt guide roller, 12a, 12b
・°・Axis, 13...Flange, 14a, 14b...
Belt, 14c... end, 15a, 15b... belt stopper, 16a, 16b... belt stopper, 15
c...Reel, 15d...Slit, 15e...
Groove, A...1-shaped protrusion, B...stopper protrusion. Patent applicant: Tokai Rika Denki Seisakusho Co., Ltd.

Claims (1)

[Claims] (1) A mirror support that supports the mirror from the rear side is arranged and supported on the front of the mirror case so as to be tiltable, and a drive system including an electric motor is arranged inside the mirror case, and the power of the drive system is used to In an automobile mirror in which the mirror is rotated around both longitudinal and lateral wheels together with a mirror support, a total of four belts are provided on both sides along each of the longitudinal and transverse axes with the rotation center of the mirror support as the center of rotation within the mirror case. Arranging guide rollers and wrapping belts around a pair of rollers along the vertical axis and a pair of rollers along the horizontal axis, fixing both ends of each belt to the back surface of the mirror support, and at least one of the pair of rollers. An outer gear for an automobile, characterized in that the roller is connected to the drive system and driven to rotate.