JPS60154932A - Drive unit for motor mirror device - Google Patents

Abstract

PURPOSE:To improve the strength at the supporting section and the vibration resistance at the mirror section by arranging the motor shaft while directing the leading edge toward the supporting section to bring the motor nearest to the supporting section thereby thinning the drive unit. CONSTITUTION:A drive unit 6 is contained in a case 11 to be supported on the supporting section 12 while rollably on the rear face of mirror section 13. A working rod 14 for regulating the view angle of mirror section 13 in the left/ right direction is provided while a motor 30 is arranged at the space side to be partitioned by the supporting section 12 and a pair of working rods 14, 15 to direct the leading edge of shaft 30a of motor 30 toward the supporting section 12. Since supporting section 12, working rods 14, 15 and motor 30 are contained respectively in small rectangular partitions P1-P4, they can be contained in the minimum area without overlapping.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a drive unit for an electric mirror device in a vehicle or the like in which the angle of a portion of the mirror can be adjusted by remote control.

(Prior art) Conventionally, a mirror is provided with a support part that swingably supports a part of the mirror, and the angle of the part of the mirror is adjusted by a pair of operating rods that are arranged at right angles to each other and retract from the support part. The drive unit of the electric mirror device has a structure in which the support portion is provided on the outer surface of the case of the drive unit, and a motor and gear mechanism for moving the pair of operating rods in and out are housed inside the case.

Therefore, necessary parts such as the motor are present inside the outer surface of the case where the support portion is provided, and the support portion must be provided only on the outer surface of the case. For this reason, the structure of the support part is also made smaller to prevent the unit from becoming thicker, and because the support area is small, it is not possible to provide sufficient support strength for a part of the mirror, and it is also difficult to add a function for attaching and detaching it from the mirror part, for example. It was difficult. For this reason, in this type of conventional electric mirror device, the support part and the motor inside the case overlap, and due to the thickness limit of the drive unit including the support part, the support part and a part of the mirror do not come into contact with each other. The area had to be small, and as a result, there was a problem in that the supporting force for a part of the mirror was not sufficient and it was susceptible to vibration.

In addition, it can also be used when a part of the mirror is easily removed due to mischief, or if the motor breaks down or a part of the mirror is damaged, or if you want to replace it with a different type of mirror, such as one with a heater or color. There were problems such as the need to replace the entire device including the unit and mirror holder.

(Object of the Invention) The object of the present invention is to improve this type of electric mirror device in order to eliminate such problems, and to reduce the thickness of the drive unit, make it smaller and more compact, and at the same time provide support for a part of the mirror. An object of the present invention is to provide a drive unit for an electric mirror device that can dramatically improve the support strength of the mirror part and the vibration resistance of the mirror part.

Another object of the present invention is to be able to configure a part of the mirror to be detachable from the supporting part, thereby preventing unnecessary parts replacement due to failure or damage, reducing replacement costs, and facilitating maintenance. An object of the present invention is to provide a drive unit for an electric mirror device.

(Structure of the Invention) In particular, the present invention includes a support part that swingably supports a part of the mirror, and a pair of actuating rods that are disposed at substantially right angles to each other and retract from the support part are used to control the angle of the part of the mirror. It is applied to the drive unit of an electric mirror device that performs adjustment, and its main component is a motor for driving one of the operating rods located in the space defined by the support section and the pair of operating rods. Further, the tip of the shaft of the motor is arranged so as to substantially face the support part, so that the motor does not overlap the support part, and the motor can be arranged closest to the support part. shall be.

(Example) Below, preferred examples that further embody the present invention will be described in detail with reference to the drawings.

In the drawings, FIG. 1 is a front view with a part of the mirror removed of an electric mirror device equipped with a drive unit according to the present invention, and FIG. 2 is a side view of the vicinity of the drive unit in the direction of arrow A in FIG. show.

First, in order to clarify the present invention, the overall schematic structure of the electric mirror device will be described with reference to FIGS. 1 and 2.

The device indicated by the reference numeral 1 in the figure is a so-called door mirror installed on the side of the door of an automobile. The device 1 consists of a base part 2 which is attached and fixed to the side of the door, and a separate mirror body 3 which is elastically supported and can be tilted back and forth. This mirror main body 3 has a housing 4 formed into a case shape with a front opening, and a drive unit 6 is attached to a central opening 5a of a support plate 5 fixed to the inside of this housing 4. This installation is done by locking the L-shaped locking pieces 5a and 5b provided on the back side end of the drive unit 6 into the locking holes 5b and 5c provided in the support plate 5, and then locking the L-shaped locking pieces 5a and 5b provided at the back side end of the drive unit 6 into the locking holes 5b and 5c provided at the other end. 6C and the upright piece 5d of the support plate 5 are fixed with screws 5e. In addition, the upper and lower parts 5f of the support plate 5,
5 (Hang one end of the coil springs 1 and 8 on ff,
The other end of the spring 7.8 is hooked to both ends of the connecting plate 90. The center of this connecting plate 9 is further swingably connected to the pace member 2 side via a link member 10, so that the mirror main body 3 is moved by the action of the spring 7°80.
is always urged against the base member 2 and is elastically supported.

On the other hand, the drive unit 6 is swingably supported by a support portion 12 provided on the outer surface 11a of the case 11 on the back surface of the mirror portion 13 shown by the imaginary line in FIG. Further, a pair of operating rods 14 and 15 are provided at substantially right angles to each other with respect to the supporting portion 12, that is, on the right side and below the supporting portion 12, and are retracted from the case 11 by a motor or the like. Rod 14
．． 15 is connected to the back surface of the mirror part 13 with a swingable ball joint, thereby making it possible to adjust the viewing direction angle of the mirror part 13. Note that the mirror portion 13 is placed in such a manner as to close the opening of the housing 4.

Next, with reference to FIG. 1, as well as FIGS. 3 and 4, the drive unit 6, which is a main component of the present invention, will be specifically described. FIG. 3 is a component layout diagram of the drive unit according to the present invention, and FIG. 4 is a B-B of the drive unit in FIG. 1.
FIG.

The drive unit 6 is housed in the case 11, which has a generally rectangular parallelepiped shape and is relatively thin as a whole.

As shown in Figure 3, the support part 1 is located at the upper center in the width direction when viewed from the front.
2 will be provided. This support portion 12 is the outer surface 11a of the case 11.
It is constructed by a combination of a concave spherical surface part 16 formed in a cylindrical shape, and a support pin 18 that supports the supported part 17 formed on the back surface of the mirror part 13 by sandwiching it between the concave spherical surface part 16 and the concave spherical surface part 16. The support pin 18 consists of a spherical part 18a concentric with the spherical part 16, and a support shaft part 18b protruding from the center thereof, and the support shaft part 18b is formed in the center of the concave spherical part 16 through the front and rear surfaces of the case 110. The spherical part 18a of the support pin 18 is inserted into the concave spherical part 1 by inserting it into the bearing hole 16a and attaching it from the rear surface of the case 11 with the spring 19, washer 20, and screw 21.
6 side and elastically supported in the axial direction.

On the other hand, the supported portion 17 formed on the back surface of the mirror portion 13 is formed in the shape of a spherical plate sandwiched between the spherical surface portion 18a and the concave spherical surface portion 16 in a sandwich shape, and the center of the supported portion 17 is open.

Therefore, when attaching the supported part 17 of the mirror part to the support part 12, first insert the support shaft part of the support bottle from the front side into the center opening of the concave spherical part 16 in the part of the mirror without a mirror (mirror holder). 18b is inserted, and in this state, the mirror holder is heated (in the case of thermoplastic resin), etc., and the mirror is fitted to perform subassembly. After that, by inserting the support shaft portion 18b into the bearing hole 16a of the drive unit 6 from the front and screwing it from the rear side of the unit 6, the supported portion 17 will be connected to the spherical portion 18a and the concave spherical surface as shown in FIG. The mirror portion 13 is supported between the portions 16 under pressure by the biasing action of a spring 19, and due to the spherical shape, the mirror portion 13 is swingably supported with respect to the case 11.

On the other hand, the operating rod 14 for adjusting the viewing angle of the mirror part 13 in the left and right direction is disposed near the right side of the support part 12, and the mirror part 13 is arranged near the lower side of the support part 12.
The operating rod 15 for adjusting the viewing angle in the vertical direction
The operating rod 15 is formed entirely of a screw frame as shown in FIG. 4, and is inserted into a cylindrical driving member 23 having a gear 22 on its outer periphery. The rotation of the operating rod 15 is restricted, and a clutch pin 24, which rotates following the drive member 23, is engaged with the threaded portion, thereby causing the drive member 23 to rotate forward and backward, thereby causing the operating rod 15 to rotate. Case 1
1, so that the viewing angle of the mirror part 13 can be varied in up, down, left and right directions with the support part 12 as the center.

Further, a small gear 25a of a reduction gear 25 is engaged with the gear 22, and a shaft 2 of a motor 26 is engaged with a large gear 25b.
6. Engage the worm gear 27 which is fixed to the shaft a. Here, the motor 26 is arranged so that the axial direction of its shaft 26a is substantially parallel to a straight line Q connecting the center of the support portion 12 and the center of the operating rod 15.

On the other hand, the operating rod 14 is also formed in the same manner as the operating rod 15,
It is driven by a similar gear mechanism. That is, the small gear 29a of the reduction gear 29 is engaged with the gear 28 corresponding to the gear 22, and the worm gear 31 which is fixed to the shaft 30a of the motor 30 is engaged with the large gear 29b. What should be noted here is that the motor 30 is disposed in a space defined by the support section 12 and a pair of operating rods 14 and 15, and that the tip of the shaft 30a of the motor 30 is approximately connected to the support section 12. This is the point that was placed towards the center. That is, as shown in FIG. 3, the rectangular shape is symmetrically divided into approximately equal concave portions p1+P2+P3. The support part 12, the operating rod 14, the operating rod 15, and the motor 30 are housed in P4, respectively, and these parts do not overlap each other (and can be effectively accommodated within the minimum installation area). .Also, attach the tip of the shirt 3Qa to the support part 12.
By arranging the motor 30 toward the support part 12, the motor 30 can be brought as close as possible to the support part 12, and as a result, when the mirror part 13 is tilted, the tilting angle range is not restricted in any way by the presence of the motor 26. There is no.

Therefore, as is clear from FIG. 3, the thickness of the drive unit 6 is minimized so that the parts necessary for the function of the drive unit 60 do not overlap each other and are housed within the minimum space without leaving unnecessary space. Not only can it be made thinner, but it can also be made smaller and more compact. Furthermore, since the support part 12 does not overlap with other parts such as a motor, it can be configured to be sufficiently large in the thickness direction of the drive unit 6, so that the abutment contact area between the support part 12 and the mirror part 13 can be large, and vibrations can occur. It is advantageous for In addition, since the support pin 18 of the support part 12 can be passed through and screwed to the rear surface of the drive unit 6, it is possible to easily configure a structure for attaching and detaching the mirror part 130 from the drive unit 6, and the support strength can be greatly increased. I can do it.

5 and 6 show other embodiments; FIG. 5 is a front view of the drive unit with the drive unit cut away to reveal the inside, and FIG. 6 is a side view in the C direction of FIG. 5.

As is not clear from FIG. 5, the drive unit designated by reference numeral 50 also includes a support portion 52 that swingably supports the mirror portion 51, an operating rod 53 disposed on the left side of the support portion 52, and an operating rod 53 disposed below the support portion 52. One motor 55 is disposed in the space defined by the operating rod 54, and the tip of the motor 55 (55a) is directed toward the support part 52.
The same effects as the embodiment shown in the figure (Jth embodiment) can be obtained.

However, in the case of the first embodiment, the other motor 56 was arranged approximately parallel to the straight line connecting the center of the support part 52 and the center of the left operating rod 53, but in this embodiment, the other motor 56 arranged substantially parallel to the straight line R connecting the centers of the operating rods 54,
Although this point differs from the first embodiment, such an arrangement does not depart from the scope of the present invention.

(Effects of the Invention) As described above, the drive unit of the electric mirror device according to the present invention has an ideal layout of components in the drive unit that does not leave any unnecessary space, so the thickness of the drive unit can be reduced and It can be made smaller and more compact.As a result, the space for the support part that supports the mirror part can be effectively secured, and the abutting contact area of the support part with the mirror part can be made sufficiently large, increasing the support strength and the vibration resistance of the mirror part. It can be improved dramatically.

In addition, a part of the mirror can be configured to be removable from the support part, which prevents unnecessary parts replacement due to failure or damage, reducing replacement costs and simplifying maintenance. obtain.

[Brief explanation of drawings]

Fig. 1 is a front view with a part of the mirror removed of an electric mirror device equipped with a drive unit according to the present invention, Fig. 2 is a side view of the vicinity of the drive unit in the direction of the arrow in Fig. 1, and Fig. 3 is a main FIG. 4 is a sectional view taken along the line B-B of the drive unit in FIG. 1, and FIG. 5 is a cutaway diagram showing the inside of a drive unit according to another embodiment of the invention. The front view and FIG. 6 are side views in the C direction of FIG. 5. In the drawing, 6 and 50 are drive units, 12.52 is a support part, 13.51 is a part of a mirror, 14 and 15 degrees, 53.54 is an operating rod, 30.55 is a motor, and 30a. 55a is the shaft of the motor. Patent applicant: Matsuyama Seisakusho Co., Ltd., Honda Lock Co., Ltd., patent attorney (2) 1) Japan Department, patent attorney: Kuni Ohashi, patent attorney, Department: Yu Koyama

Claims (1)

[Claims] Driving an electric mirror device that includes a support part that swingably supports a part of the mirror, and adjusts the angle of the part of the mirror by a pair of actuating rods that are disposed at substantially right angles to each other and retract and retract from the support part. In the unit, a motor for driving one of the operating rods is disposed in a space defined by the supporting portion and the pair of operating rods, and the tip of the shaft of the motor is arranged approximately toward the supporting portion. A drive unit for an electric mirror device characterized by: