JPH07315128A - Tiltable door mirror - Google Patents

Abstract

PURPOSE:To reduce the number of assembling steps and the number of component parts so as to reduce the cost of a tiltable door mirror, by providing a positioning member or the like having a face-mating structure in the tiltable door mirror. CONSTITUTION:A shaft 10 is secured to a mirror base 3, and a shaft 10 has a shaft base 10b from which a pair of tapered positioning members 14 are projected, a peripheral wall 13 which defines a slide surface for a frame 2 and from which a stopper 10c is projected outward. Further, a peripheral wall which abuts against and slides along the peripheral wall 3 are formed at the lower surface of a frame 2 for holding a mirror body 1, and a pair of tapered positioning members are projected in this peripheral wall. Further, a coil spring 30 which is retained at its upper and lower ends to a rotation checking member 40 which is secured to the upper end part of the shaft 10 by means of a plate 50, and a locking member 15 at the bottom surface of the frame, and the frame 2 is pressed against and secured to the shaft base 10b.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a retractable door mirror in which a mirror body can be rotated in the front and rear of a vehicle.

[0002]

2. Description of the Related Art FIG. 10 is an exploded view showing a conventional example, and is an exploded view showing a structure of a rotating portion such as a ball and a plate stopper. The mirror base 90 is fixed to a side panel such as a triangular window portion of a vehicle through a gasket, and a shaft 92 is screwed to an arm portion 91 of the mirror base 90.

A circular step 92b is formed integrally with the base 92a of the shaft 92.

A mirror body 96 is held on a frame 95 rotatably supported on the shaft 92, while a plate stopper 97 having a recess 97a and a hole 98a are formed on the frame 95. The ball guide 98 is fixed.

On the other hand, at the base portion 92a of the shaft 92, the frame 9 is provided further outside the outer edge of the step 92b.
A stopper 97c is formed with which one end of 5 abuts.

Further, on the outer periphery of the shaft 92, the lower end is in contact with a washer 101 disposed on a ball guide 98, and the upper end is a washer 9 disposed below the plate 102.
The coil spring 100 abutting on 9 is suspended.

The conventional example having the above-mentioned structure is the coil spring 1
When the mirror body 96 is rotated electrically or manually against the elasticity of 00, one end of the frame 95 is stopped by the stopper 97.
It contacts with c and regulates its rotation angle.

Further, the shaft 92 and the frame 95 have a surface contact structure, and a plurality of spheres 93 are arranged in a ball guide 98 which is prevented from rotating by the shaft 92.
Washer 101, coil spring 100, washer 9
The frame 95 is pressed against the shaft base portion 92a by sequentially connecting the plate 9 and the plate 102.

The sphere 93 rides on the concave portion 97a of the plate stopper 97 and rolls on its flat surface when it can be folded forward or backward. As a result, the position clutch is avoided and the mirror body 96 becomes in a foldable state. Also, the sphere 93
When the frame 95 is rotated to the neutral or rearward inclinable position, falls into the recess 97a of the plate stopper 97, and the frame 95 is fixed.

[0010]

However, the above-mentioned conventional example has the following problems, and the solution is desired. That is, since the number of parts such as small balls is large, the number of assembling steps cannot be omitted, and the cost is high.

Further, since many parts must be press-fitted, strong ones must be used, and therefore expensive materials are required.

Furthermore, it is necessary to improve the precision of the parts for the ball to slide in the ball guide hole, to increase the spring load so as not to loosen the front and rear of the mirror, and to further increase the spring load. It is difficult to reduce the cost because, for example, the strength of parts must be increased in order to increase

[0013]

According to the present invention, a mirror base fixed to a side panel of a vehicle body, a screw to the mirror base, a tapered positioning member protruding from the shaft base, and a sliding surface of a frame are provided. And a stopper is provided on the outer side of the peripheral wall, and a peripheral wall that contacts and slides on the peripheral wall is formed on the lower surface of the frame that holds the mirror body, and a pair of tapers is formed in the peripheral wall. Further, a positioning member is provided so as to project, and further, a rotation preventing member fixed to the upper end portion of the shaft by a plate and a coil spring having upper and lower end portions locked to a locking member on the bottom surface of the frame are provided, and a shaft base portion is provided. A retractable door mirror characterized by pressing and fixing a frame.

Further, the coil spring has an upper end bent in the thrust direction or the radial direction and a lower end bent in the radial direction or the thrust direction, and the lower end is pressed by the locking member when the mirror body is rotated. Further, according to the present invention, the tapered positioning member on the frame side can ride on the tapered positioning member on the shaft side when the mirror body is tilted backward.

[0015]

According to the present invention, the number of parts is reduced by arranging the taper positioning member which can be integrally molded on the shaft base and the lower surface of the frame to form the surface-contacting structure, and the number of assembling steps is greatly reduced. Realized and reduced cost.

When the mirror body is in the neutral position, a twisting reaction force is generated by the coil spring, but the tapered surface of the tapered positioning member comes into contact with the clutch and the clutch operates. Alternatively, when the rearward folding is possible, the torsional reaction force disappears, but the sliding resistance is caused by the sliding resistance due to the compressive load generated in the thrust direction by riding on the tapered positioning member. Further, at the time of tilting forward, the lower end of the coil spring is locked by the locking member and turns while twisting the spring, but since the spring is not held at the tiltable position, it returns to the neutral position by the twisting reaction force.

[0017]

FIG. 1 is an exploded perspective view showing an embodiment of the present invention, FIG. 2A is an exploded perspective view showing an essential part of the present invention, and FIGS. Fig. 3 to Fig. 5 are explanatory views showing a rearward foldable state and a front foldable state, Fig. 3 to Fig. 5 are explanatory diagrams showing the relationship between the frame and the tapered positioning member of the shaft, and Fig. 6 to Fig. 9 are explanations showing the relationship between the frame and the coil spring. It is a figure.

According to the invention of the present application, a frame 3 fixed to a mirror body 1 is fixed to a side surface of a mirror base 3 holding a frame 4 with a gasket 4 on a triangular window portion of a vehicle body (not shown).
It is a retractable door mirror M that rotates the mirror body 1 manually or electrically.

The shaft 10 has a chamfer 11 at its upper end 10a and a locking groove 12 formed therein.
A peripheral wall 13 that slides on the peripheral wall of the lower surface of the frame is formed at 0b, and a taper surface 14 is formed at the end inside the peripheral wall 13.
A pair of positioning members 14 having a formed therein are provided so as to project at the axially symmetrical positions.

On the other hand, the frame has a plate portion 23 for holding the socket 21 and the mirror holder 22,
A shaft hole 24 through which the shaft 10 is inserted is formed on the other side of the plate portion 23. Further, a peripheral wall 25 (FIG. 2) that slides with the peripheral wall 13 is formed on the lower surface of the frame 2 in which the shaft hole 24 is formed, and a tapered positioning having a tapered surface 26a with an inclined end portion is formed in the peripheral wall. A member 26 is provided so as to project in an axially symmetrical manner, and this tapered positioning member 26 can be fitted to or slidable on the tapered surface 14a of the tapered positioning member 14 provided on the shaft base 10b.

Further, the coil spring 30 presses the shaft 10 and the frame 2 by its repulsive force and also has a function of rotating the mirror body 1 in a radial (circumferential) direction around the shaft 10 and a play in the radial direction. It has a function to exclude it, and its details will be described later.

The upper end 30a of the coil spring 30 is bent in the thrust (vertical) direction and inserted into the small hole 41 of the detent member 40 such as a washer, while the lower end 30b is radial (circular). Bend in the direction, frame 2
One end is locked to a locking member 15 such as a stopper that is provided protrudingly.

Further, the rotation preventing member 40 is provided with a long hole 42 into which the upper end portion 10a of the shaft 10 is inserted. Although not shown, the coil spring 30 may have an upper end bent in the radial direction and one end fixed to the rotation preventing member, and a lower end bent in the thrust direction to fix one end thereof. It may be hooked on the locking member.

Further, the plate 50 is substantially U-shaped in a plane, and the coil spring 10 is inserted by inserting the rotation stopping member 40 into the locking groove 12 of the shaft 10.
Is pressed and fixed between the rotation preventing member 40 and the frame bottom surface.

The present invention, as shown, includes a shaft base 1
0b and a lower surface of the frame 2 are provided with a pair of tapered positioning members 14 and 26 projecting at symmetrical positions, and the tapered surfaces 14a and 26a are arranged so as to abut each other.

That is, the tapered positioning member 14 of the shaft 10 has the tapered surfaces 14a arranged axially symmetrically with respect to the shaft 10 as shown in the figure, and the frame 2
The tapered positioning member 26 and the tapered surface 26a thereof are also arranged in the same manner so that they are always interlocked when the frame 2 rotates.

At the neutral position of the mirror, as shown in FIG. 7, the coil spring 30 is set so as to generate a twisting reaction force by an angle θ, and the coil spring 30 exerts a force to return in the opposite direction. Because the compressive load of the shaft is set larger than the torsional reaction force,
The tapered positioning members 14 and 26 of the frame 2 and the frame 2 have tapered surfaces (FIG. 2B), and the clutch is in the activated state, so that the mirror maintains neutrality.

That is, according to the present invention, the coil spring 3 is used.
The frame 2 is pressed against the shaft 10 in the radial direction and the thrust direction by a twisting reaction force of 0 in the circumferential direction and a compressive load in the vertical direction.

Further, when it is tilted backward (FIG. 6), the twisting reaction force becomes "0" when it is rotated from the neutral position by an angle θ1.
After that, it rotates only by the sliding resistance due to the compressive load (Fig. 8). That is, the tapered positioning member 26 on the frame 2 side rides on the tapered positioning member 14 of the shaft 10 (FIG. 2C) and rotates while applying a compressive load in the thrust direction of the shaft 10.

Further, when the mirror is rotated forward, the coil spring 30 is rotated while being twisted because the spring lower end portion 30b is locked to the spring locking member 15 formed on the frame 2, but it can be folded. When the hand is released because there is no holding at the position (FIG. 2D), the frame returns to the neutral position due to the twisting reaction force of the coil spring 30 in the circumferential direction.

As described above, when the frame is rotated by a certain angle, the coil spring generates a compressive load by overcoming the tapered positioning member formed on the frame depending on the rotating direction and a reaction force due to the twist of the coil spring. As a result, the mirror body can be rotated to the front, neutral, and rear positions as in the conventional example.

Further, according to the present invention, at the neutral position when the mirror body is retractable, the upper and lower end portions of the coil spring are locked with respect to the circumferential direction to generate a twist, so that a reaction force for returning is generated. However, since the tapered surfaces of the positioning member come into contact with each other, the clutch mechanism that holds the mirror in the neutral position functions.

Furthermore, when the front of the mirror body is retractable,
Since the end of the coil spring is locked to the locking member of the frame, a reaction force is generated in the coil spring, but since the coil spring is not held in the tilted position, the frame is automatically moved by the torsional reaction force in the circumferential direction. Return to neutral position.

When the frame is tilted rearward, the twisting reaction force becomes "0" when the frame is tilted from the neutral position by an angle of .theta.1, and thereafter, only the sliding resistance due to the compression load (vertical) of the coil spring causes the rotation. Can move. In the present invention, like the conventional example, a part of the frame 2 is abutted by the locking member 10c such as a stopper provided on the shaft base portion 10b so as to restrict the further rotation.

[0035]

According to the present invention, the number of parts is reduced as compared with the prior art by disposing the tapered positioning member which can be integrally formed on the lower surface of the shaft base and the frame, and the small and small parts such as balls are eliminated. As a result, the number of assembly steps has been reduced and the cost has been reduced.

According to the present invention, as described above, the structure for obtaining the torsional reaction force and the spring compression load does not have the complicated structure by the clutch mechanism using the balls as in the prior art, but enables the integral molding of the resin. It was possible to provide a high-quality retractable door mirror, which greatly improved the work efficiency of, and eliminated the occurrence of failures.

[0038]

[Brief description of drawings]

FIG. 1 is an exploded perspective view showing an embodiment of the present invention.

FIG. 2A is a partial perspective view showing a main part in an exploded manner, and FIGS. 2B to 2D are explanatory views of a sliding portion between a shaft and a frame showing a neutral state, a rearward foldable state, and a forward foldable state, respectively.

FIG. 3 is an explanatory view of a state in which the peripheral wall of the frame is viewed from below.

FIG. 4 is an explanatory view of a state in which the peripheral wall of the shaft is viewed from above.

FIG. 5 is an explanatory view of a state in which the same is vertically stacked.

FIG. 6 is an explanatory diagram showing the relationship between the frame and the coil spring of the present invention.

FIG. 7 is an explanatory diagram showing a neutral position of the same.

FIG. 8 is an explanatory diagram showing a rearward folding state of the same.

FIG. 9 is an explanatory view showing a front inclinable state.

FIG. 10 is an exploded perspective view showing a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Mirror body 2 Frame 3 Mirror base 4 Gasket M Mirror 10 Shaft 10a Shaft upper end 10b Shaft base 10c Locking member 11 Chamfer 12 Locking groove 13,25 Circular wall 14,26 Tapered positioning member 14a, 26a Tapered surface 15 Locking Member 22 Mirror holder 23 Plate portion 24 Shaft hole 30 Coil spring 30a Coil spring upper end 30b Coil spring lower end 40 Rotation prevention member 41 Small hole 50 Plate θ, θ1 angle

Claims (3)

[Claims] 1. A mirror base fixed to a side panel of a vehicle body, a shaft fixed to the mirror base, a pair of tapered positioning members projecting from the shaft base, and a peripheral wall serving as a sliding surface for the frame. Further, a stopper is provided on the outer side of the peripheral wall, and on the other hand, a peripheral wall that abuts and slides on the peripheral wall is formed on the lower surface of the frame that holds the mirror body, and a pair of tapered positioning members are provided in the peripheral wall. Furthermore, a coil spring having upper and lower ends locked to a detent member fixed to the upper end of the shaft with a plate and a locking member on the bottom of the frame is arranged to press the frame against the shaft base. A retractable door mirror that is fixed. 2. The coil spring has an upper end bent in the thrust or radial direction and a lower end bent in the radial or thrust direction, respectively, and the locking member presses the lower end when the mirror body rotates. The retractable door mirror according to claim 1. 3. The foldable door mirror according to claim 1, wherein the tapered positioning member is positioned on the other tapered positioning member when the mirror body is rotated rearward.