JP3069261B2 - Vehicle door mirror - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle door mirror provided with a tilting control means.
Regarding technology to bring back.

[0002]

2. Description of the Related Art In recent years, in order to avoid a danger when a shock is applied from a front direction or a rear direction, a door mirror having a tilting means so that the door mirror can be tilted in a front-rear direction is often used. It is supposed to be.
For example, when a person walks on the side of a stopped vehicle and collides with a door mirror, the impact of the collision cannot be absorbed unless the tilting control means is provided, and the door mirror may be damaged, Have the problem of getting injured. Therefore,
Door mirrors with tilting control have attracted attention.

FIG. 5 is an exploded perspective view showing the structure of a conventional door mirror having a tilting control means. As shown in the figure, the overhang portion 5 of the base 50 provided on the right side of the vehicle
1, a shaft base 53 of a shaft member 52 is stored and fixed, and a rotation bearing 60 of a frame 58, which is a mirror frame material, is inserted into a rotating shaft 54 standing upright on the base 53 and provided on the lower surface of the frame base 59. Circular groove type guide 6
1 is loosened by a convex rotation restricting member 57 implanted above the shaft member base 53. Further, a plate stopper 62 having a concave portion 63 for a ball receiving seat of the ball 67 is fitted and fixed in the rotary bearing portion 60, and then a ball guide 64 having a ball guide hole 65 gripped so that the ball 67 can be freely moved up and down. , A washer 68, a compression spring 69, and a washer 70 are inserted into the rotating shaft 54, and finally, the U-shaped retaining ring 71 is inserted into the slit 56 at the top of the rotating shaft 54 in a state where the spring 69 is pressed and compressed. A plate outer 72 is mounted thereon to form a frame assembly 73.

A mirror assembly 75, an actuator unit 76 for tilting the mirror in the left-right and up-down directions, and a body 7 are mounted on the frame assembly 73 constructed as described above.
4 is attached. In the above configuration, the plate stopper 62 is fitted and fixed to the rotation bearing portion 60 of the frame 58, and the rotation of the ball guide 64 having the ball guide hole 65 is regulated by the vertical key 55 of the rotation shaft 54. Further, the four balls 67 gripped by the ball guide holes 65
When the frame 58 and the shaft member 52 are in a positional relationship accommodated in the four ball receiving recesses 63 provided in the plate stopper 62, the frame 58 is located at the upright position, and the convex rotation restricting member is provided. Numeral 57 is substantially in the middle of the arcuate groove type guide 61.

[0005] Therefore, when a large rotational force is applied by an external force to move the mirror in the standing position forward and backward, the plate stopper 62 fixed to the frame 58.
The ball 67 slides in the ball guide hole 65 and rotates against the pressing force of the compression spring 69 (in this case, the ball 67 is disengaged from the engagement by the recess 63 for the ball receiving seat). Thus, the rotation restricting member 57 is rotated until it comes into contact with any end of the arcuate grooved guide 61, and the door mirror is moved forward or backward.

[0006]

However, in such a conventional vehicle rearview mirror having a tilting control means, since the number of components for constituting the frame assembly 73 is large, labor for assembling is increased. There is a disadvantage that the cost is high. In addition, since the spring load must be increased in order to prevent play before and after the door mirror, a strong material and expensive parts are required to withstand this pressure.

Further, the ball 67 is provided with the ball receiving recess 6.
3, the frame 58 can be switched between the upright position, the forwardly inclined position, and the backwardly inclined position by being detached from the frame 3. Therefore, there is a drawback that high component accuracy is required. The present invention has been made to solve such a conventional problem, and the object thereof is to:
An object of the present invention is to provide a vehicular rear-view mirror device that can easily switch between a standing position, a forward position, and a backward position with a simple configuration.

[0008]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention comprises a shaft member projectingly mounted on a vehicle body, with a rotation shaft implanted on the shaft member being used as a center of rotation. In a rotatable vehicle door mirror, a first rotation restricting member formed on an upper surface side of a shaft member base so as to protrude in an arc shape concentric with the rotation shaft, and having a first tapered surface on one side surface. A rotation stop member formed by projecting radially on the outer peripheral surface of the rotation shaft; and a mirror frame having a first through hole through which the rotation shaft passes, and capable of rotating about the rotation shaft. , May be formed on the lower surface side of the mirror frame so as to project in an arc shape concentric with the rotation shaft, and one side surface may come into surface contact with a first taper surface of the first rotation regulating member . a second rotation restricting member having a second tapered surface, The serial first on the upper surface side of the mirror frame through hole concentric arcuate, and said second rotation restricting member is formed with projections in a staggered manner, the second on one side
A third rotation regulating member having a third tapered surface substantially parallel to the second tapered surface of the rotation regulating member, a second through-hole capable of passing through the rotation shaft, and A plate clutch having a fitting groove on the inner peripheral side of the second through-hole to be fitted with the detent member to prevent rotation; and a circular arc concentric with the second through-hole on the lower surface side of the plate clutch. are formed by projections, and the fourth rotation regulating member having a third tape <br/> tapered surface and the fourth tapered surface capable of surface contact of the third rotation regulating member on one side, said plate has a spring for pressing the clutch to the shaft member proximally, the said Mirafu
When the frame is in the neutral position, the first rotation regulation
The member and the second rotation restricting member have a first tapered surface and a second rotation restricting member.
Surface contact only on the tapered surface of
The fourth rotation regulating member includes a third tapered surface and a fourth tapered surface.
When the mirror frame moves forward only when it comes into surface contact only on the
The first rotation restricting member is provided with the second rotation restricting portion.
The material moves up and turns, and the mirror frame falls backward
In this case, the fourth rotation regulating member is attached to the third rotation regulating member.
It is characterized in that the member rides and turns .

[0009]

According to the present invention constructed as described above, when the mirror is in the upright position, the first rotation restricting member has the first rotation restricting member .
Tapered surface and the second tapered surface of the second rotation restricting member contacts the, and, and a fourth tapered surface of the third tapered surface and the fourth rotation regulating member of the third rotation regulating member Contact. At this time, the component force of the load by the spring acts on the contact surface of each tapered surface, and the balance of these component forces fixes the mirror at the upright position. On the other hand, the addition of rotational force to the forward tilting direction of large force to the mirror, the first tapered surface and the second rotation restricting member of the first rotation restricting member second
Of the first rotation regulating member slides on the second rotation regulating member.
The rotation restricting member rides on. Then, the mirror rotates to a predetermined position and reaches the forward position. Further, the addition of rotational force to the rear losses direction, the fourth tapered surface of the third tapered surface and the fourth rotation regulating member of the third rotation restricting member slides,
The fourth rotation regulating member rides on the third rotation regulating member. Then, the mirror rotates to a predetermined position and reaches the backward position. In this manner, the user can switch between the standing position, the forward leaning, and the backward leaning.

[0010]

An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is an exploded perspective view showing a configuration of a vehicle door mirror to which the present invention is applied. As shown in the figure, this door mirror is a door mirror on the right side of the vehicle, and a shaft member 12 is fixed on a base plate (not shown) which is attached to and protrudes from the side of the vehicle. The frame 2 is rotatably fixed by the plate clutch 15. And
The frame 2 can be turned to the upright position, the forwardly inclined position, and the backwardly inclined position with respect to the shaft member 12.

The shaft member 12 can be fixed to a base plate (not shown) by bolts and nuts or the like using the mounting holes 4, and a rotation shaft 5 is implanted at the center of rotation. . In the vicinity of the joint position of the rotating shaft 5 with the shaft base 1, a plurality of rotation stopping members (vertical keys 6) are implanted radially with respect to the rotating shaft 5. Further, a plurality of (two in the figure) first rotation restricting members 7 protruding in an arc shape concentric with the rotation shaft 5 are formed, and one side surface of the first rotation restriction member 7 is the first side . It has a tapered surface 7a . Further, on the outer peripheral side of the first rotation regulating member 7, the frame sliding surface 8 is also concentric with the rotating shaft 5.
Are protruding.

The frame 2 is for mounting an actuator unit and a mirror assembly (not shown). The frame base 3 of the frame 2 has an insertion hole 14 through which the rotating shaft 5 is inserted. Further, on the lower surface side of the frame base 3, second rotation restricting members 11 protruding in an arc shape concentric with the insertion hole 14 are formed at two places, and one of the second rotation restricting members is similar to the first rotation restricting member. Side is second
Of the tapered surface 11a . At this time, the tapered surface 7a of the first rotation restricting member 7 and the tapered surface 11a of the second rotation restricting member 11 are opposed and parallel to each other. Further, on the upper surface side of the frame base 3, a third rotation regulating member 13 which is also protruded in an arc shape concentric with the insertion hole 14 is formed. The third rotation regulating member 13 has one side surface formed in a tapered shape similarly to the first and second rotation regulating members 7 and 11, and has a third tapered surface 13a . Further, the second rotation restricting member 11 and the third rotation restricting member 13 are arranged in a staggered manner above and below the frame base 3. That is, the third rotation restricting member 13 does not exist on the back side of the second rotation restricting member 11, and each rotation is performed so that the second rotation restricting member 11 does not exist on the back side of the third rotation restricting member 13. The orientation of the regulating members 11 and 13 is determined.

The plate clutch 15 is formed in an annular shape having an insertion hole 18 formed at the center thereof, and a fourth rotation regulating member 16 is formed on the lower surface of the plate clutch 15 in an arc shape concentric with the insertion hole 18. The protrusion is formed. The fourth rotation regulating member 16 also has a taper on one side surface, similarly to the first to third rotation regulating members 7, 11, 13.
Surface (fourth tapered surface) 16a. In addition, the plate clutch 1 with respect to the rotating shaft 5 is fitted into the insertion hole 18 by fitting the rotation stopping member (vertical key ) 6 of the rotating shaft 5.
5 is formed with a key groove 17 for preventing rotation of the key.
In order to press the plate clutch 15 against the frame base 3 side, a spring 19 is inserted into the rotating shaft 5,
Further, the plate clutch 15 is compression-fixed to the shaft member 12 by fitting the washer 20 and fitting the U-shaped plate 21 into the notch groove 9 of the rotating shaft 5.

The operation of the thus constructed vehicle door mirror according to the present embodiment will be described with reference to FIGS. FIG. 2 shows a state where the frame 2 of the door mirror is in a neutral state, that is, a position when the door mirror is arranged in an upright position. FIG. 3 shows a position where the frame 2 of the door mirror is leaning backward (rearward). Is shown. FIG. 4 shows a position where the door mirror 2 is tilted forward (forward tilt). As shown in FIG. 2, when the frame 2 is in the upright position, the tapered surface 7a of the first rotation restricting member 7 of the shaft member 12 and the second rotation restricting member 11 of the frame base 3
Surface contact with the tapered surface 11a of the
And the tapered surface 13a of the third rotation regulating member 13, the tapered surface 1 of the fourth rotation regulating member 16 of the plate clutch 15
6a makes surface contact. As shown in FIG. 1, the shaft base 1 and the plate clutch 15 are prevented from rotating with each other because the rotation is prevented by the fitting of the vertical key 6 and the key groove 17.

Now, let F be the spring load applied by the spring 19 shown in FIG. 1, and the tapered surfaces 7a, 11a, 13 of the first to fourth rotation regulating members 7, 11, 13, 16 respectively.
a, 16a, and the angle between the three surfaces of the frame base are α,
Assuming that the friction angle between the contacting tapered surfaces is γ, the horizontal component force f with respect to the spring load F is expressed by the following equation (1). f = F * tan (α−γ) (1) and the taper of the first and second rotation regulating members 7 and 11
The horizontal component f generated between the surfaces 7a, 11a and the tapered surfaces 13a, 15 of the third and fourth rotation regulating members 13, 15
Since the directions are opposite to the horizontal component f generated between the points a, the component f in each direction is balanced and fixed at this position. That is, the frame 2 becomes the standing position at this position. At this time, gaps d exist between the shaft member 12 and the frame base 3, and between the frame base 3 and the plate clutch 15, respectively.

Next, in order to move the frame 2 backward, the frame base 3 shown in FIG. 2 is rotated leftward in the figure. Then, the shaft member 12 and the plate clutch 1
5, the taper surfaces 11a and 7a slide against the spring load F as shown in FIG. The rotation restricting member 16 rides on. Then, it is retracted to the position where it comes into contact with the stopper 10 shown in FIG. Meanwhile, frame 2
In order to tilt the frame base 3 forward, the frame base 3 is rotated rightward in the figure from the state of the upright position shown in FIG. As a result, the shaft member 12 and the plate clutch 15 also do not rotate, and as shown in FIG.
The tapered surfaces 13a and 16a slide against the first rotation restriction member 7, and the second rotation restriction member 11 rides on the upper side of the first rotation restriction member 7. Then, it is tilted forward to the position where it comes into contact with the stopper 10 shown in FIG. In this manner, the user can switch between the upright position, the forward position, and the backward position.

As described above, in the present embodiment, the first rotation regulating member 7 attached to the shaft member 12, the second and third rotation regulating members 11, 13 attached to the frame base 3, and the plate The fourth rotation restricting member 16 attached to the clutch 15 allows the frame 2 to be easily switched between the upright position, the forward position, and the backward position. In this embodiment, the number of components is smaller than in the conventional case, so that the number of assembly steps can be reduced and the cost can be reduced. Also, since there are fewer press-fit parts than before,
Costs can also be reduced in terms of parts and materials. Further, since components requiring high precision, such as a ball and a ball guide hole, are not required, design and assembly are simplified, and failures are reduced. In addition, in any case of the standing position, the forward position, and the backward position,
Since it is fixed by surface contact, there is no play even after long-term use.

[0018]

As described above, according to the present invention,
With a simple configuration, the mirror can be switched between the upright position, the forward position, and the backward position. Therefore, it is possible to solve the conventional problems that the number of parts is increased, the cost is increased, high accuracy is required, and backlash occurs during rotation.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view showing a configuration of a vehicle door mirror according to one embodiment of the present invention.

FIG. 2 is an explanatory diagram showing a state where a door mirror is arranged at a neutral position.

FIG. 3 is an explanatory diagram showing a state in which a door mirror is disposed at a backward position.

FIG. 4 is an explanatory view showing a state in which a door mirror is arranged at a forward position.

FIG. 5 is an exploded perspective view showing a configuration of a conventional door mirror.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Shaft base 2 Frame 3 Frame base 4 Mounting hole 5 Rotating shaft 6 Detent member (vertical key) 7 First rotation restricting member 8 Frame sliding surface 9 Notch groove 11 Second rotation restricting member 12
Shaft member 13 Third rotation regulating member 14 Insertion hole 15
Plate clutch 16 Fourth rotation regulating member 17 Spring

Continuation of front page (58) Field surveyed (Int. Cl. ⁷ , DB name) B60R 1/074-1/076

Claims (1)

(57) [Claims] 1. A system mounted on a vehicle body so as to project from the vehicle body.
Shaft memberComprising, implanted on the shaft memberTimes
For vehicle door mirrors that can rotate with the turning axis as the center of rotation
In addition, on the upper surface side of the shaft member base, an arc concentric with the rotation axis
It is formed by protruding in the shape ofFirstTaper surface
A first rotation restricting member having: a rotation formed by projecting radially on an outer peripheral surface of the rotation shaft;
A stop member, and a first through hole through which the rotating shaft passes.
A mirror frame rotatable as a center; and an arc concentric with the rotation axis on a lower surface side of the mirror frame.
The first rotating ruler is formed on one side surface.
Control memberFirstCan make surface contact with tapered surfaceSecondTapered surface
A second rotation restricting member having the following configuration: concentric with the first through hole on the upper surface side of the mirror frame
And in a staggered manner with the second rotation restricting member.
The second rotation restricting portion is formed on one side surface.
LumberSecondAlmost parallel to the tapered surfaceThirdHas a tapered surface
A third rotation regulating member, a second through-hole capable of penetrating the rotation shaft, and a second through-hole.
On the inner peripheral side of the through holeDetent memberTo prevent rotation
A plate clutch having a fitting groove for stopping; and a second through hole formed on a lower surface side of the plate clutch.
The projection is formed in the shape of a circular arc of the heart, and the third
Of the rotation regulating memberThirdCan make surface contact with tapered surfaceFourth
A fourth rotation restricting member having a tapered surface, and pressing the plate clutch toward the shaft member base.
Spring andHas, If the mirror frame is in the neutral position,
The first rotation regulating member and the second rotation regulating member
Surface contact only with the tapered surface and the second tapered surface, and
The rotation restricting member and the fourth rotation restricting member have a third tapered surface.
Surface contact only with the fourth tapered surface, When the mirror frame moves forward, the first rotation
The second rotation regulating member rides on the regulating member and rotates.
And When the mirror frame falls backward, the third rotation
The fourth rotation regulating member rides on the regulating member and rotates.
That  A vehicle door mirror characterized by the above-mentioned.