JPH0544200Y2 - - Google Patents

Description

[Detailed Description of the Invention] <<Industrial Application Field>> The present invention relates to a prism-type anti-glare inside mirror that is shiftable between at least a full-reflection daytime position and a reduced-reflection nighttime position.

<Prior Art> As disclosed in Japanese Utility Model Publication No. 58-26202, a conventional inside mirror of this type is a bracket (toggle type actuator) with a pivot attached by switching the knob. by shaking the
An inside mirror is disclosed in which the mirror body is tilted to adjust the angle of a prism reflecting surface. In this inside mirror, the bracket is provided with a pivot receiving part, and the pivot at the tip of the stay is rotatably fitted into the pivot receiving part by passing through a hole provided in the mirror body.

[Problem to be solved by the invention] However, in the conventional example, the pivot at the tip of the stay was rotatably fitted through a hole provided in the mirror body through the pivot receiving part of the bracket. , it was not possible to adjust the pivot tightening torque.

In addition, in conventional inside mirrors, the pivot at the tip of the stay is inserted between the hemispherical receiving part provided on the surface of the bracket and the receiving part of the pressing piece formed on the bracket inside the mirror body. There is a device in which the pressing piece and the bracket are tightened using a screw, and the pivot tightening torque is maintained by tightening the screw, but this requires disassembling the device each time to adjust the pivot tightening torque. There was a problem that maintenance and inspection were not easy.

The present invention was developed by focusing on the above-mentioned problems, and its purpose is to simplify maintenance and inspection by eliminating the need to disassemble the device each time the pivot tightening torque is adjusted. The purpose is to provide an inside mirror.

<Means for Solving the Problems> In order to solve the above problems, the present invention tilts the mirror body by swinging the bracket to which the pivot is attached by switching the knob part, and the prism In the inside mirror for adjusting the angle of the reflective surface, upper bearing parts are formed on the left and right sides of the upper center of the inner surface of the mirror body, and lower bearing parts are formed on the lower left and right sides of the center, and the upper part of the bracket is An upper support shaft portion and a pivot mounting portion having left and right support shafts are provided at the bottom of the bracket, and a lower support shaft portion and a knob portion having a hinge portion and left and right support portions are provided at the bottom of the bracket. The support shaft is rotatably fitted to the upper bearing part of the mirror body, and the left and right support parts of the lower support shaft part are rotatably fitted to the lower bearing part to attach the bracket to the mirror body, and the bracket is attached to the mirror body. Attach the pivot mounting part of the bracket.
A hemispherical receiving part is provided on the surface of this bracket, and a receiving part opposite to the receiving part is formed at the other end of the pressing piece whose one end is integrally formed with the bracket.Both receiving parts of the pivot mounting part In between, insert the pivot at the tip of the stay inserted through the insertion hole formed in the upper part of the mirror body, and screw the screw into the female screw member provided at the other end of the pressing piece from the bracket side. The pivot tightening torque is maintained by tightening, and a screw operation hole is provided on the opposite side of the mirror body from the prism reflective surface.
An axis line A passing through the center of the upper support shaft of the bracket
is located above the straight line B passing through the center of the pivot and parallel to the axis A, and an axis C passing through the center of the lower support shaft is located below the straight line B and passing through the center of the pivot. It is characterized in that the center P1 of the upper support shaft portion and the center P2 of the hinge portion are located approximately on the perpendicular line D.

<<Operation>> With this configuration, the pivot tightening torque can be adjusted by inserting a screwdriver through the screw operation hole provided in the mirror body and rotating the tightening screw with this driver. in this way,
Since the pivot tightening torque can be adjusted from the outside, there is no need to disassemble the device each time the pivot tightening torque is adjusted, making maintenance and inspection easier.

<<Example>> An example of the present invention will be described below based on the drawings. FIG. 1 is a partially exploded perspective view of an inside mirror according to the present invention, FIG. 2 is a partially exploded front view of the same mirror, and FIG. 3 is a sectional view taken along the line shown in FIG. 2.

The inside mirror has a mirror part 20 and a stay 21
This mirror part 20 is made up of a mirror body 1.
The mirror body 1 has an insertion hole 2 in the upper center and a knob protrusion hole 2 in the lower part.
Furthermore, a screw operation hole 3 is formed on the right side of the mirror body 1 opposite to the prism reflecting surface 28. Upper bearing portions 4 are located on the left and right sides of the upper center of the inner surface of the mirror body 1.
Further, a lower bearing portion 5' and a stopper piece 23 are formed on the left and right sides of the lower side, respectively.

Reference numeral 5 designates a bracket, and as shown in FIGS. 4 to 7, this bracket 5 has an upper support shaft portion 6 and a pivot mounting portion 7 at its upper portion, and a hinge portion 14 and a lower support shaft portion 8 at its lower portion. and a knob portion 9' are integrally formed. That is, the upper support shaft portion 6 is formed by providing left and right support shafts 10' projecting from the upper left and right sides of the bracket main body 5a.

Further, the pivot mounting portion 7 is attached to the bracket body 5.
A hemispherical receiving part 8' formed on the surface part a, a pressing piece 9 having one end formed integrally with this surface part, and a pressing piece 9 formed at the other end of the pressing piece 9 so as to face the receiving part 8'. The bracket main body 5a has a hemispherical receiving part 10, and a receiving seat 12 consisting of a hole 11 and a rectangular recess is formed on the tip side of the pressing piece 9. A hole 13 facing the hole 11 and a seat 13a made of a rectangular recess are formed.

The hinge portion 14 is integrally formed between the lower end portion of the bracket body 5a and the lower support shaft portion 8, extends over the entire lower end portion of the bracket body 5a, and is a kind of constriction portion. be. Such a hinge portion 14 can be molded by using polypropylene resin as the material for the bracket 5. The lower support shaft 8 includes a support shaft 17 in which a spring pin 16 is inserted into an outer shaft 15 made of polypropylene resin, and a support portion 18 and a stopper portion 19 are formed at the left and right ends of the support shaft 17. It has been done. The stopper portion 19 has a fan shape, and both end surfaces thereof are formed into stoppers 19a and 19b.
Furthermore, the knob part 9' is located at the lower part of the lower support shaft part 8.
It is formed integrally with this.

Then, the left and right support shafts 10 of the upper support shaft portion 6
is rotatably fitted into the upper bearing part 4 of the mirror body 1, and the support part 18 of the lower support shaft part 8 is rotatably fitted into the lower bearing part 5' to form the bracket 5.
is attached to mirror body 1. in this case,
The knob part 9' is a knob protruding hole 2 of the mirror body 1.
It protrudes outward from 2.

Also, the stay 21 has a pivot 24 at its tip.
The base is provided with a mounting seat 25.

The pivot 24 of the stay 21 is inserted into the mirror body 1 through the insertion hole 2 of the mirror body 1, and this pivot 24 is inserted between the hemispherical receiving parts 8' and 10 of the pivot mounting part 7 of the bracket 5. Then, attach the square nut 26, which is a female screw member, to the catch seat 12, insert the screw 27 through the hole 13 of the mirror body 1, screw the screw 27 into the square nut 26, and screw it. By tightening the bracket, the pressing piece 9 is drawn toward the surface of the bracket body 5a, thereby securing the pivot tightening torque.

In addition, a stopper portion 1 provided on the lower support shaft portion 8
The peripheral portion of 9 is in sliding contact with the stopper piece 23 of the mirror body 1.

The inside mirror configured in this manner is attached to the ceiling of the vehicle interior at the attachment seat 25 of the stay 21.

In the inside mirror configured as described above, as shown in FIGS. 4 and 5, the axis passing through the center of the left and right support shafts 10' of the upper support shaft portion 6 of the bracket main body 5a is designated as A, and the axis of the pivot 24 is designated as A. A straight line passing through the center and parallel to the axis A is B, the lower support shaft portion 8
When the axis passing through the center of the left and right support portions 18 is C, the axis A is located above the straight line B, and the axis C
is located below straight line B.

Then, as shown in FIG.
The center P1 of the upper support shaft 6 is on the perpendicular line D passing through the center of
The center P2 of the hinge portion 14 is approximately located.

Next, the operation will be explained. By rotating the knob part 9' in the front-back direction, the bracket 5 is swung at a predetermined angle in the front-rear direction via the hinge part 14 using the upper support shaft part 6 as a fulcrum, and the mirror body 1 is tilted. to adjust the angle of the prism reflecting surface 28. In this case, the lower support shaft part 8 is reinforced by inserting a spring pin 16 into the outer shaft 15 made of polypropylene resin, which improves the click feeling when switching the knob, and also allows it to withstand a constant load. However, it does not deform and is designed to prevent vibration.
Further, the rotation of the knob portion 9' is regulated by the stoppers 19a and 19b at the end of the stopper portion 19 provided on the lower support shaft portion 8 coming into contact with the stopper piece 23 of the mirror body 1. Ru.

Further, the pivot tightening torque is adjusted by inserting a screwdriver into the screw operation hole 3 provided in the mirror body 1 and rotating the tightening screw 27 with the driver.

Furthermore, in the prism-type inside mirror, anti-glare is achieved by switching the knob portion 9' to adjust the prism angle.

In this case, the prerequisite is that the mirror body 1 holding the prism reflecting surface 28 (a triangular prism mirror that is heavier than a normal mirror with a constant thickness) is designed to prevent chattering caused by vehicle vibrations, etc., which can cause image defects. has been done.

Therefore, in the case of the anti-glare inside mirror, the distance between the upper support shaft 6 and the lower support shaft 8 is slightly longer than the distance between the upper and lower bearings 4 and 5' of the mirror body 1. , the support shaft 10' of the upper support shaft part 6 and the support part 18 of the lower support shaft part 8 are forcibly inserted into the upper and lower bearing parts 4, 5' of the bracket 5, and the bracket 5 is attached to the mirror body 1. When assembled, the mirror body 1 is in a tensioned state, and by keeping the mirror body 1 in a tensioned state, the chattering phenomenon is prevented.

Under such circumstances, as shown in FIG. 4, an axis A passing through the center of the left and right support shafts 10' of the upper support shaft portion 6 of the bracket 5 passes through the center of the pivot 24 and is parallel to the axis A. Since it is located above straight line B, by rotating the knob part 9' in the front-back direction, the bracket 5 can be moved in the front-back direction via the hinge part 14 with the upper support shaft part 6 as a fulcrum. When the angle of the prism reflective surface 28 is adjusted by tilting the mirror body 1 by swinging it to a predetermined angle,
As shown by F1 in FIG. 8, the turning operation force of the knob portion 9' can be small, and the torque adjustment force can be small, and the field of view can be adjusted smoothly. Further, since the straight line B passing through the center of the pivot 24 is located between the axis A and the axis C passing through the center of the lower support shaft section 8, the center of the pivot 24 is located at the center of gravity of the mirror section 20. It will be more stable because it will be closer.

Note that if the axis A passing through the center of the left and right support shafts 10' of the upper support shaft part 6 of the bracket 5 is located below the straight line B passing through the center of the pivot 24 and parallel to the axis A, for example, In this case, a large force is required to operate the rotation of the knob portion 9' as shown by F2 in FIG. 8, and the torque adjustment force becomes large, and the field of view cannot be adjusted smoothly.

Furthermore, as shown in FIG. 7, since the center P1 of the upper support shaft 6 of the bracket 5 and the center P2 of the hinge portion 14 are substantially located on the perpendicular line D passing through the center of the pivot 24, the knob portion 9 By rotating the mirror body 1 in the front and back direction, the bracket 5 is swung at a predetermined angle in the front and back direction via the hinge part 14 and the upper support shaft part 6 is used as a fulcrum, and the mirror body 1 is tilted. When adjusting the angle of the surface 28, the angle in the front-rear direction is constant, there is little change in the tension force, and it is easy to prevent chatter.

<<Effects of the invention>> As explained above, the present invention is an inside system that tilts the mirror body and adjusts the angle of the prism reflecting surface by swinging the bracket to which the pivot is attached by switching the knob part. In the mirror, upper bearing parts are formed on the left and right sides above the center of the inner surface of the mirror body, and lower bearing parts are formed on the left and right sides of the lower part, and an upper support having left and right support shafts is formed on the upper part of the bracket. A shaft portion and a pivot mounting portion are provided at the bottom of the bracket, and a lower support shaft portion and a knob portion each having a hinge portion and left and right support portions are provided at the bottom of the bracket, and the left and right support shafts of the upper support shaft portion are attached to the upper side of the mirror body. The bracket is rotatably fitted to the bearing part, and the left and right bearing parts of the lower support shaft part are rotatably fitted to the lower bearing part to attach the bracket to the mirror body, and the pivot mounting part of the bracket is attached to this part. A hemispherical receiving portion is provided on the surface of the bracket, and
One end of the pressing piece is formed integrally with the bracket, and the other end of the pressing piece is formed with a receiving part opposite to the receiving part,
Insert the pivot at the tip of the stay inserted through the insertion hole formed in the upper part of the mirror body between both receiving parts of the pivot mounting part, and insert the screw from the bracket side into the female screw member provided at the other end of the pressing piece. are screwed together, the pivot tightening torque is maintained by tightening this screw, a screw operation hole is provided on the opposite side of the mirror body from the prism reflecting surface, and the axis A passing through the center of the upper support shaft of the bracket is connected to the pivot. is located above a straight line B passing through the center of the pivot and parallel to the axis A, and an axis C passing through the center of the lower support shaft is located below the straight line B, and above a perpendicular line D passing through the center of the pivot. It is characterized in that the center P1 of the upper support shaft portion and the center P2 of the hinge portion are located approximately at the center P1 of the upper support shaft portion and the center P2 of the hinge portion.

Therefore, adjust the pivot tightening torque.
The pivot tightening torque can be adjusted from the outside by inserting a screwdriver into the screw operation hole provided in the mirror body and rotating the tightening screw with the screwdriver. Therefore, it is not necessary to disassemble the device each time to adjust the pivot tightening torque, making maintenance and inspection easy. Furthermore, since the screw operation hole is provided on the back side of the prism reflection surface of the mirror body, the head of the screw is located on the rear side of the mirror body. As a result, the pivot tightening torque can be easily adjusted without the screwdriver or operator's hands being obstructed by the ceiling of the vehicle body, and moreover, the mirror body can be easily adjusted while the mirror body is attached to the vehicle body.

In addition, since the pivot according to the present invention is inserted and held in both receiving portions of a bracket separate from the mirror body and a pressing piece formed on this bracket, even if the pivot is tightened by both receiving portions, this tightening will not occur. This does not affect the housing itself and does not distort the housing.Therefore, there is no worry that the mirror with the prism reflective surface will come off from the housing due to distortion of the housing, and both receiving parts can be integrated with the housing. The cause of sink marks during housing molding can be reduced compared to when molding the housing. Moreover, as mentioned above, the tightening torque for the pivots of both receivers can be easily adjusted through the operation hole provided on the back side of the mirror body, and the optimum tightening torque can be adjusted without worrying about distortion of the housing. The pivot can be tightened and the angle of the pribum reflective surface can be selected to the best possible angle, contributing to safe driving.

In addition, one end of the pressing piece of the present invention is a cantilever integrally formed with the bracket, and the other end is therefore a free end, so that it cannot be tightened with a large torque against the pivot. is possible,
Further, the torque adjustment range can be widened.

In this invention, the pivot provided at the tip of the stay is inserted through the insertion hole formed at the top of the mirror body.
Furthermore, since it is inserted between both receiving parts, the pivot is inserted into both receiving parts that open upward at the top of the mirror body, and the shape of the stay is as follows.
It may be straight, or it may be slightly curved, taking into consideration the positional relationship with the window glass, etc. Therefore, the degree of freedom in designing the shape of the stay is extremely large.

Moreover, the axis A passing through the center of the upper support shaft of the bracket passes through the center of the pivot and the axis A
Because it is located above straight line B parallel to
By rotating the knob part in the front-rear direction, the bracket is swung through the hinge part to a predetermined angle in the front-rear direction using the upper shaft part as a fulcrum, and the mirror body is tilted, so that the prism reflecting surface When adjusting the angle of
As shown by F1 in the figure, a small force is required, the torque adjustment force is small, and visibility adjustment can be performed smoothly. Furthermore, since the straight line B passing through the center of the pivot is located between the axis A and the axis C passing through the center of the lower support shaft, the center of the pivot approaches the center of gravity of the mirror section. So it becomes stable.

Also, on the perpendicular line D passing through the center of the pivot,
Since the center P1 of the upper support shaft and the center P2 of the hinge of the bracket body are approximately located, by rotating the knob in the front and back direction, you can move the bracket and the upper support shaft through the hinge. When adjusting the angle of the prism reflective surface by tilting the mirror body by using it as a fulcrum and swinging it at a predetermined angle in the front-back direction, the angle in the front-back direction is constant, and there is little change in the tension force, making it easier to prevent chatter. .

[Brief explanation of the drawing]

Fig. 1 is a partially exploded perspective view of an inside mirror according to the present invention, Fig. 2 is a partially broken front view of the same mirror, Fig. 3 is a sectional view taken along the line of Fig. 2, and Fig. 4 is a partially exploded perspective view of the inside mirror according to the present invention. A front view of the bracket, FIG. 5 is a plan view, FIG. 6 is a side view, FIG. 7 is a sectional view taken along the line shown in FIG. 4, and FIG. It is a relationship diagram with the amount of movement. 3...screw operation hole, 5...bracket,
8', 10... Receiving portion, 9... Pressing piece, 24... Pivot, 26... Female screw member, 27... Screw, 28... Prism reflecting surface.

Claims (1)

[Scope of utility model registration request] In an inside mirror in which the angle of the prism reflection surface is adjusted by tilting the mirror body by swinging the bracket to which the pivot is attached by switching the knob part, the left and right sides above the center of the inner surface of the mirror body are used. An upper bearing part is formed at the bottom, and lower bearing parts are formed on the left and right sides of the lower part, an upper support shaft part having left and right support shafts and a pivot mounting part are formed at the upper part of the bracket, and a hinge part is formed at the lower part of the bracket. A lower support shaft portion and a knob portion each having left and right support portions are provided, and the left and right support shafts of the upper support shaft portion are rotatably fitted into the upper bearing portion of the mirror body, and the lower support shaft portion is rotatably fitted to the upper bearing portion of the mirror body. The bracket is attached to the mirror body by rotatably fitting the left and right support parts of the bracket into the lower bearing part, and the pivot mounting part of the bracket is provided with a hemispherical receiving part on the surface part of the bracket, and one end is attached to the mirror body. A receiving part opposite to the receiving part is formed at the other end of the pressing piece integrally formed with the bracket, and the pushing piece is inserted between both receiving parts of the pivot mounting part through an insertion hole formed in the upper part of the mirror body. Insert the pivot at the tip of the stay, and screw the screw from the bracket side into the female screw member provided on the other end of the pressing piece, and by tightening this screw, the pivot tightening torque is maintained, and the prism reflection of the mirror body A screw operation hole is provided on the opposite side of the surface, and an axis A passing through the center of the upper support shaft of the bracket is aligned with an axis A passing through the center of the pivot and an axis A.
The axis line C passing through the center of the lower support shaft is located below the straight line B, and the center of the upper support shaft is positioned above a perpendicular line D passing through the center of the pivot. An inside mirror characterized in that P1 and the center P2 of the hinge portion are approximately located.