JPH0737998Y2 - rearview mirror - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to an electric retractable door mirror capable of adjusting a reflection angle of a mirror and standing up and retracting from a vehicle interior.

[Prior Art] Various types of rearview mirrors are known, which are capable of adjusting the reflection angle of the mirror by remote control in the vehicle compartment and capable of being electrically retracted, but the most widely used one is For example, as shown in FIG. 5, a shaft 62 erected on a base projecting portion 61 provided outside a vehicle door panel or a triangular window, and a frame 63 rotatably fitted to the shaft 62.
And an electric storage unit 64 provided near the rotating part of the frame.
And an electric remote control unit 65 for adjusting the mirror reflection angle provided on the extension of the frame.

The electric storage unit 64 includes a gear box 67 provided in a frame rotating portion around the shaft, a motor 66 fixed to the upper portion of the gear box 67, and a cap 68 attached to cover the motor 66. The gear box 67 has a reduction gear train 69 built in which is connected to a worm gear provided at the output shaft end of the motor 66. An end gear 71 of the reduction gear train 69 meshes with a clutch gear 72 fitted on the shaft 62. The clutch gear 72 is biased by a spring 74 in a direction to engage with a clutch receiver 73 fixed to the upper end of the shaft 62.
The rotation of the motor 66 causes the end gear 71 to pass through the reduction gear train 69.
When is rotated, the mirror body 75 fixed to the extension portion 63 of the frame can be tilted forward or backward around the shaft 62 from the center position.

Further, the electric remote control unit 65 is, for example, Japanese Utility Model Sho 61-18048.
No. 8 (Japanese Utility Model Laid-Open No. Sho 63-85545), a support means 81 provided in a front housing that is substantially in the center of the mirror, and two sets of movable pivots for tilting the mirror horizontally and vertically, respectively. Drive transmissions 89 and 90 that move the movable pivot back and forth with respect to the mirror
And the motors 87 and 88. That is, by simultaneously moving back and forth either or both of the movable pivots provided on the back surface of the mirror at an angle of 90 ° with respect to the support shaft, the mirror is tilted about the support means to reduce the reflection angle. It can be adjusted.

[Problems to be solved by the invention] In the electric retractable door mirror as described above, a frame is formed by fastening an electric retractable unit 64 in which necessary components are incorporated in advance and an electric remote controller unit 65 for adjusting the mirror reflection angle with screws or the like. Since it is attached to the 63, there is a possibility that defective products may come out due to variations in precision of parts and variations in tightening torque.

Further, it is necessary to perform the assembling while centering each of the assembling, and the assembling man-hour becomes large, which causes the increase in the number of parts and the cost.

Further, since the combination of the above-mentioned parts is adopted, the rigidity of the components becomes insufficient, which causes chattering while the mirror is running, and there is a problem that the whole becomes thick and it is difficult to satisfy the legal avoidance requirement. It was

The present invention provides an electric retractable rearview mirror that is easy to secure the rigidity of parts and has a thin and compact overall structure.

[Means for Solving the Problems] In order to achieve the above object, the present invention provides a frame rotatably attached to a shaft erected on a base projecting portion, and a mirror reflection angle provided on a base portion of the frame. An electric retractable vehicle rearview mirror having an electric remote control unit for adjustment; a lower case in the electric retractable unit is integrally molded with the frame base, and is located above the lower case at a position facing the lower bearing portion. An upper case provided with an upper bearing portion is attached; one of a front half housing and a rear half housing forming a housing of the electric remote control unit is integrally formed with an extension portion of the frame.

[Operation] The remote control motor and the dove dive transmission are arranged in the front or rear half housing formed in the extension of the frame, and the rear or front half housing is fitted and the electric remote control unit for adjusting the mirror reflection angle is assembled. In this way, the rotating portion of the frame to which the electric remote control unit is assembled in advance is inserted into the shaft standing on the projecting portion of the base, and then the spring, the clutch gear and the clamp receiver are sequentially attached to the shaft.
Next, the reduction gear train is installed in the lower case, the motor is arranged, the upper case is covered to form the electric storage unit, and the frame is tightened and fixed to the mirror body to complete the assembly.

The lower case that forms the gearbox of the electric storage unit and the front or rear half housing of the electric remote control unit are integrally molded with the frame, so it is easy to secure the rigidity of each unit and the mirror body is thin and compact. It is possible to

[Embodiment] Hereinafter, the present invention will be specifically described with reference to the drawings.

FIG. 1 is an exploded perspective view showing the outline of an electric retractable door mirror, FIG. 2 is a plan view of a frame, and FIG. 3 is a vertical sectional front view of the same.

A shaft 2 is erected on a base projecting portion 1 shown by a chain line in FIG. 1, and a frame 3 is rotatably attached to the shaft 2, and a gear box and a front half housing 5b, which will be described later, are integrated with the frame 3. Molded.

An electric storage unit 4 is provided on the rotating portion 3a of the frame 3 arranged around the shaft 2, and an electric remote control unit 5 for adjusting the mirror reflection angle is arranged on the extension portion 3b of the frame 3. An electric storage motor 6 is provided in the motor 5. Further, reduction gear trains are built in the upper and lower cases 4a, 4b of the gear box 7.

Also, a lower case 4b that constitutes the gear box 7,
Front housing 5b that constitutes the electric remote control unit
Are integrally formed with the frame 3. Lower case
Reference numeral 4b includes a socket 10 into which the shaft 2 is inserted, bearings 27 to 30 of the reduction gear train, and screw holes 52 for tightening the upper case 4a.

On the other hand, the front half housing 5b is a recess that accommodates the two tilting motors 31, 32 and the worm wheels 35, 36.
41 to 44, a tubular portion 39 for attaching the central pivot, and tapping screws 46 and 47 inserted through the rear housing 5a.
Through holes 48 and 49.

The gear box 7 can be incorporated with an arbitrary reduction ratio. For example, as shown in FIG. 4, a worm wheel 23 meshed with a worm 22 fixed to a motor output shaft is transmitted to a clutch gear 12 via gear groups A to F. 5 speed reduction (6 speed reduction including worm gear) is adopted. In that case, the lower case 4b is provided with bearings 27 to 30 to support the lower ends of the worm wheel shaft 23a, the intermediate shafts 24 and 25, and the end gear shaft 26, and the upper ends of the shafts are from the upper case 4a side. It is supported by vertically extending bearings 28a, 29a, 30a. However, the reduction gear train and the shaft support portion are not limited to those illustrated.

On the other hand, the electric remote control unit 5 is an extension of the frame.
The front half housing 5b integrally molded with 3b and the front half housing are separate bodies, and the fitting portion 5c on the outer edge thereof
The rear half housing 5a fitted and set by the above, the vertical tilting motor 31, the horizontal tilting motor 32, the vertical tilting drive member 33 including the worm wheel 35 and the adjusting nut 37, the worm wheel 36 and the adjusting nut 38. The left and right tilting drive members 34 including the above and the wire harness 50 for the motor wiring are constituted by electric parts (FIG. 1).

A supporting means is formed by a cylindrical portion 39 fixed to the center of the front half housing, a spherical recess 40 fixed to the rear half housing 5a, and a spherical trapezoidal pivot of a mirror element (not shown). One of the motors is driven to move the movable pobot back and forth to adjust the reflection angle of the mirror at any time.

In order to assemble the above-mentioned mirror, first, as shown in FIG. 1, the motors 31, 32 and the drive members 33, 34 for tilting vertically and horizontally are arranged in the recesses 41 to 44 in the front half housing 5b in the frame extension 3b. , Rear half housing 5a
And the electric remote controller unit 5 is assembled using the tapping screw 46. Front half housing 5b
The cylindrical portion 39 protruding from the side is penetrated into the spherical trapezoidal recess 40 on the shear half housing 5a side, and a pivot (not shown) on the mirror element side is attached to that portion to form a supporting means.

Next, the socket 10 of the rotating portion 3a is fitted on the shaft 2 of the base protruding portion 1. After disposing the spring 14 on the shaft 2, the clutch gear 12 and the clutch receiver 13 are sequentially attached. Further, the shafts 23a, 24 to 26 and the gear groups A to F are incorporated in the lower case 4b, and the upper case 4a having the motor 6 attached thereto is covered. The bearings 28a, 29a, 30a of the upper case 4a have shafts 24, 2
It supports the upper ends of 5,26. In this way, the electric storage unit 4 is formed by attaching the upper case 4a to the lower case 4b and then tightening it with the screws 51.

After being assembled in this way, the assembly is dropped into a mirror body (not shown), the tapping screw 47 is passed from the rear half housing 5a side, the assembly is fixed to the mirror body through the frame part, Further, the base plate of the shaft is fixed to the base projecting portion 1 to complete the whole assembly.

In the illustrated example, the front half housing 5b is formed on the extension portion 3b of the frame, but the rear half housing 5a is integrally formed on the extension portion 3b, and a separate front half housing is fitted to this. Good.

[Advantages of the Invention] As described above, according to the present invention, the lower case of the gear box that constitutes the electric storage unit and the front or rear half housing that constitutes the electric remote control unit are integrally molded in the frame, and the electric storage unit is provided in the electric storage unit. By supporting the gears on the bearings of the upper and lower cases, it is easy to directly install the components of each unit, eliminating the lack of rigidity of the main components that has been seen in the past and eliminating the mirror chatter during traveling due to the bulkiness. The occurrence of can be suppressed.

Also, since the extension part of the frame is shared with a part of the housing, the whole structure can be made thin, lightweight and compact, and in particular, the assembling accuracy between the rotating part and the gear box is improved, and the quality is improved. It is possible to provide a stable rearview mirror. Further, there is an advantage that the number of parts and the man-hour for assembly and adjustment can be significantly reduced.

[Brief description of drawings]

FIG. 1 is an exploded perspective view of a rearview mirror of the present invention, FIG. 2 is a plan view showing a part of a frame in a transverse manner, FIG. 3 is a vertical sectional front view, and FIG. 4 is a transmission system diagram of a gearbox. Fifth
The figure is a schematic view of a conventional type rearview mirror. 1 ... Base protrusion, 2 ... Shaft, 3 ... Frame,
3a ... Frame rotating part, 3b ... Frame extension part, 4 ... Electric storage unit, 5 ... Electric remote control unit, 6 ... Electric storage motor, 7 ... Gear box, 10 ... Socket, 11 ... End gear, 12 ... Clutch gear , 13 ... Clutch receiver, 14 ... Spring, 28, 28a, 29, 29a, 30, 30a ... Bearing portion, 31, 32 ... Tilt motor, 39 ... Cylindrical portion, 41-44 ... Recessed portion.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-63-87341 (JP, A) Actually opened 61-70157 (JP, U) Actually opened 62-144746 (JP, U) Actually opened 62- 145848 (JP, U)

Claims (1)

[Scope of utility model registration request] 1. A frame rotatably fitted to a shaft erected on a base projecting portion, an electric storage unit provided at a base portion of the frame, and an electric motor for adjusting a mirror reflection angle provided at an extension portion of the frame. In a rearview mirror for an electric retractable vehicle having a remote control unit, a lower case having a plurality of lower bearing portions for supporting gears in the electric retractable unit is integrally formed on the frame base, and the upper case is formed. Is covered with an upper case having an upper bearing at a position facing the lower bearing, and an extension of the frame is provided with either a front or rear half housing constituting the housing of the electric remote control unit. A rearview mirror characterized by being integrally molded.