JP3022165B2 - Folding door mirror - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

This onset Akira BACKGROUND OF THE, concerning the mirror body to the front and rear direction of the vehicle to be rotatable with the retractable door mirrors.

[0002]

2. Description of the Related Art FIG. 10 shows a conventional rearview mirror.
FIG. 2 is an exploded perspective view showing a rotating unit structure including a shaft, a coil spring, a ball, a plate stopper, and the like. The mirror base 90 is fixed to a side panel such as a triangular window of a vehicle via a gasket.
1, a shaft 92 is screwed.

[0003] A circular step 92b is formed integrally with a base 92a of the shaft 92.

Further, holding the mirror body 9 6 Frame 95 is supported rotatably relative to the shaft 92, while the frame 95 has a plate stopper 97 and the hole portion 98a has a recess 97a The ball guide 98 is fixed.

On the other hand, a frame 92 is provided on the base 92a of the shaft 92 further outside the outer edge of the step 92b.
5 forms a stopper 97c with which one end thereof abuts.

Further, a coil is provided on the outer periphery of the shaft 92.
A spring 100 is provided. This spring 1
00, the lower end is To設washer 101 which is disposed on the ball guide 98, the upper end is卷装the contact to a compressed state washer 99 which is disposed on the lower side of the U-shaped plate 102
There Ru.

[0007] The conventional example of the above configuration is a coil spring 1
When the mirror body 98 is rotated electrically or manually against the elasticity of
c and regulates its rotation angle.

The shaft base 92a and the frame 95
Is a surface contact structure, and a plurality of spheres (balls) 93 are arranged in a hole portion 98 a of a ball guide 98 stopped by a shaft 92 . Furthermore, ball guide 9
8 washer 101 from above the shaft periphery, the coil spring 100, washer 99, U-shaped plate 102
Are sequentially inserted to press the frame 95 against the shaft base 92a.

[0009] Incidentally, the ball 93 rides the recess 97a of the plate stopper 97 at the front or rear lodging <br/>, Bo
Slide the hole of the screw guide 98, and the coil spring
The compressed ball 93 rolls on the flat surface of the plate stopper 97 . Whereby the position clutch is avoided mirror body 96 is inclined state. When the frame 95 is rotated to the neutral or rearwardly lying position, the ball 93 falls into the concave portion 97a of the plate stopper 97, and the frame 95 is fixed.

[0010]

However, the conventional example has the following problems, and a 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 inevitable.

In addition, since there are many components that need to be press-fitted, high-strength components must be used, so that expensive materials are required.

Furthermore, ball ball guide hole was well fit portion product precision slides, high order the spring load to the mirror longitudinal direction not issue a play, further, the component strength to increase the spring load It is difficult to reduce costs, such as the need to increase The present invention
Reduces the number of parts, reduces weight, and simplifies assembly.
Back and forth in the mirror in the neutral position
The purpose is to provide a rearview mirror
is there.

[0013]

Means for Solving the Problems To achieve the above object,
According to the first aspect of the present invention, the
The mirror body 1 is rotatably attached to the
Insert the shaft 10 into the frame 2 in the body 1
A shaft hole 24 is provided, and the outer periphery of the shaft hole and the upper end of the shaft are provided.
Of the shaft 10 between the washer 40 fixed near the part.
Press the frame 2 against the shaft base 10b on the outer periphery.
In the door mirror on which the coil spring 30 is wound ,
A peripheral wall 13 is formed on the shaft base 10b,
The peripheral wall 13 is provided on the lower surface of the frame 2 holding the body 1.
And a peripheral wall 25 that abuts with the peripheral walls 13 and 25.
Axial symmetry at the opposing surface between the shaft base and the lower frame
Position, close to each other when the door mirror is in neutral position
And a pair of positioning members 14 and 26 which are separated when falling forward.
And the positioning member is disposed when the door mirror falls down rearward.
The frame is located above the positioning member 14 on the shaft base side.
Tapered surface 14 on which the positioning member 26 on the side rides
a, 26a.

According to a second aspect of the present invention, the coil spring
30 is bent in the thrust or radial direction at the upper end 30a.
And lock the lower end 30b with the washer 40.
Curved in radial or thrust direction, upper surface of frame 2
It is to be locked to.

[0015]

[Action] The onset Ming, the peripheral wall of the shaft base and the frame
With the face bearing structure, in the neutral position state by were provided with tapered positioning member to a position opposite in both the peripheral wall
Holds back and forth in the rearview mirror .

When the mirror body is in the neutral position, a torsional reaction force is generated by the coil spring, but the taper surface of the tapered positioning member comes into contact with the clutch to operate. Alternatively, the rear lodging sometimes but torsion reaction force is eliminated to pivot sliding resistance due to compression loads occurring in the thrust direction by riding onto the positioning member tapered. Further, at the time of forward fall , the lower end of the coil spring is locked by the locking member, and the coil spring rotates while twisting the spring, but returns to the neutral position by the torsional reaction force because there is no holding at the fall position.

[0017]

DETAILED DESCRIPTION FIG. 1 is a exploded perspective view showing an embodiment of the present onset bright, FIG. 2, also showing details of the rotation the positioning member of Fig. 1
( A ) is a partial perspective view showing an exploded main part,
(B), (C) and (D) are respectively the neutral, posterior debt
FIG. 4 is an enlarged cross-sectional view of a sliding portion between a shaft and a frame in a state in which the shaft is lying down and forward. FIG. 3 is a rear view of the peripheral wall of the frame as viewed from below, and FIG. 4 is a plan view of the peripheral wall of the shaft as viewed from above. FIG. 5 is an explanatory view showing a state where the peripheral wall portions shown in FIGS. 3 and 4 are overlapped, and FIGS. 6 to 9 are explanatory views showing the relationship between the frame and the coil spring.

[0018] The onset Ming, via the gasket 4 is fixed to the triangular window portion of the vehicle body which is not shown on the side surface of the mirror base 3 holding the frame 2 fixed to the mirror body 1, a mirror body manually or electrically 1 is a retractable door mirror M that rotates.

The shaft 10, a chamfer 11 is provided at its upper end 10a, a U-shaped plate 50 on the chamfered portion
The locking groove 12 to be hooked is cut out (FIG. 1) . Further, with the back surface of the shaft base portion 10b forming a frame lower surface of the peripheral wall abutting the peripheral wall 13, on the inside of the peripheral wall 13, a pair of positioning members 14 forming the tapered surface 14a on the end shaft pair of universal It protrudes at the position (Fig. 4) .

On the other hand, the frame has a plate portion 23 for holding the socket 21 and the mirror holder 22,
On the other side of the plate portion 23, a shaft hole 24 through which the shaft 10 is inserted is formed. On the lower surface of the frame 2 in which the shaft hole 24 is formed, a peripheral wall 25 which slides on the peripheral wall 13 is formed, and a tapered positioning member 26 having a tapered surface 26a having an inclined end in the peripheral wall is formed by a shaft. Protruding symmetrically (Fig.
3) The positioning member 26 with taper matches or can slide on the tapered surface 14a of the positioning member 14 with taper disposed on the shaft base 10b.
(FIG. 2) .

Furthermore, the coil spring 30 has a function to eliminate a radial direction function and radial backlash which a mirror body 1 rotates in direction around the shaft 10 together with the pressing the shaft 10 and the frame 2 at its repulsive force And the like, the details of which will be described later.

The coil spring 30 has its upper end 30a bent in the thrust (vertical) direction so that the shaft
To inserted into the small hole 41 of the detent has been washer 40, while bending the lower end portion 30b in the radial direction, is engaged at one end to the spring stopper 1 5 projecting from the frame 2.

The washer 40 has a shaft 1
Slot for inserting the chamfer 11 near the upper end 10a
(Chamfer hole) 42 is formed. The coil spring 30 has an upper end bent in a thrust direction and a lower end 3.
Instead of bending the 0b in the radial direction, and engaging one end thereof to the locking member the lower end portion fixed to one end thereof the detent member form tracks an upper end in the radial direction to form tracks in the thrust direction (Not shown) .

Furthermore, the plate 50 is co-between the washer 40 and the frame upper surface by inserting and exhibits a flat, substantially U-shape, this engaging groove 12 of the shaft 10
The spring 10 is mounted in a compressed state .

The present onset Ming is projected at symmetrical positions a pair of tapered positioning member 14, 26 on the lower surface of the shaft base portion 10b and the frame 2 as shown in FIG. 2, each of the tapered surfaces 14a, 26a is They are arranged so that they are in a butted state.

More specifically, the tapered positioning member 14 of the shaft 10 is shown in FIGS.
Be so arranged respective tapered surfaces 14a in axial symmetry, moreover frame 2 with tapered positioning member 26 that taper surface 2
6a is also arranged in the same manner so that when the frame 2 rotates, both are always interlocked.

In the neutral position of the mirror, as shown in FIG. 7, the coil spring 30 is set so as to generate a torsional reaction force by an angle θ. Is set to be larger than the torsional reaction force,
The tapered positioning members 14 and 26 of the frame and the frame 2 have the same tapered surfaces (FIG. 2B), and the clutch is in a working state, so that the mirror is kept neutral.

[0028] That is, the present onset Ming, the coil spring 30
The frame 2 is pressed against the shaft 10 in the radial direction and the thrust direction by the torsional reaction force in the circumferential direction and the compressive load in the vertical direction.

Furthermore, the time of the rear lodging (6), twisting is rotated by an angle theta ₁ from the neutral reaction force is "0",
Thereafter, it rotates only by the sliding resistance due to the compressive load (FIG. 8). That is, the tapered positioning member 26 of the frame 2 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 rotating the mirror to the front is rotated while twisting the coil spring 30 to the spring lower end portion 30b of the spring engaging member 15 formed on the frame 2 is engaged, the laid posture 2D), the frame returns to the neutral position due to the circumferential torsion reaction force of the coil spring 30 when the hand is released because there is no holding in the frame (FIG. 2D).

As described above, when the frame rotates by a certain angle, the coil spring generates a compressive load due to climbing over the tapered positioning member formed on the frame in the direction of the rotation, and generates a reaction force due to the torsion 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, the onset Ming, in a neutral position when the mirror body collapsed, the reaction force with respect to the circumferential direction of returning by where the structure twisted by locking the upper and lower ends of the coil spring is caused occurs However, since the tapered surfaces of the positioning members come into contact with each other, a clutch mechanism for holding the mirror at the neutral position functions.

[0033] In addition, the front of the mirror body lodging and sometimes,
Although reaction force is generated in the coil spring for the spring stopper 1 5 of the frame 2 end 30b of the coil spring is engaged, the frame automatically by circumferential torsional reaction force because there is no retention in the laid posture To the neutral position.

Further, in the frame at the rear lodging, neutral from an angle θ only ₁ minute lodging Then torsion reaction force becomes "0" after that only the sliding resistance due to the compression load of the coil spring (vertical), rotating it can. The present onset Ming, contact a portion of the frame 2 equivalents are further rotation is restricted by the prior art as well as the shaft base 10b pivot angle restriction-scan <br/> stopper 10c projecting from the .

[0035]

This onset light according to the present invention, to reduce the number of components than the conventional by having disposed integrally moldable tapered positioning member to the lower surface of the shaft base portion and the frame, further, the small fine parts such as ball The elimination has reduced the number of assembly steps and reduced the cost. Also, shuff
The base wall and the peripheral wall of the frame have a surface contact structure,
Neutralized position by positioning tapered positioning member in the surrounding wall
Hold back and forth play in the rearview mirror
Can be .

The present onset Ming, since the possible integral molding of a resin instead of complex structure by the clutch mechanism using the ball as in the conventional a structure to obtain the reaction force and the spring compressive load twisted as described above, The work efficiency at the time of assembly has been greatly improved, and no failure has occurred, and a high-quality folding door mirror can be provided.

[Brief description of the drawings]

Figure 1 is an exploded perspective view showing an embodiment of the present onset bright.

FIG. 2 shows details of a rotation positioning member of FIG . 1;
( A ) is a partial perspective view showing an exploded main part, ( B ),
(C) and (D) is neutral, posterior lodging, forward inclined state
Each expansion of the sliding portion between the definitive shaft and the frame
Sectional view.

FIG. 3 is a rear view of the peripheral wall of the frame as viewed from below.

FIG. 4 is a plan view of the peripheral wall of the shaft as viewed from above.

FIG. 5 is an explanatory view of a state where peripheral wall portions shown in FIGS. 3 and 4 are overlapped.

Figure 6 is an explanatory diagram showing the relationship between frames and the coil spring.

FIG. 7 is an explanatory diagram showing a neutral position according to the first embodiment;

FIG. 8 is an explanatory diagram showing a rearwardly laid-down state of the same.

Figure 9 is an explanatory view showing the same forward inclined 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 10cRotation angle control stopper  11 chamferDepartment  12 Locking groove 13, 25 Peripheral wall 14, 26 Tapered positioning member 14a, 26a Tapered surface 15Spring stopper Reference Signs List 22 mirror holder 23 plate portion 24 shaft hole 30 coil spring 30a upper end of coil spring 30b lower end of coil spring 40Washers  41 Small hole 50U-shapePlate θ, θ ₁  angle

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-1-122746 (JP, A) JP-A-62-161055 (JP, U) JP-A-1-147137 (JP, U) JP-A-3-147 88944 (JP, U) (58) Field surveyed (Int. Cl. ⁷ , DB name) B60R 1/06

Claims (2)

(57) [Claims] (1)For the shaft 10 on the mirror base 3
On the other hand, the mirror body 1 is mounted rotatably,
Shaft hole 24 for inserting the shaft 10 into the frame 2 in the -1
And at the outer periphery of the shaft hole and near the upper end of the shaft.
On the outer periphery of the shaft 10 between the fixed washer 40,
Coil spur for pressing frame 2 against shaft base 10b
In the door mirror on which the ring 30 is wound, The peripheral wall 13 is formed on the shaft base 10b,
The peripheral wall 1 is provided on the lower surface of the frame 2 for holding the body 1.
3 to form a peripheral wall 25 which is in contact with The shaft base in the peripheral walls 13 and 25 and the lower part of the frame
Door mirror in neutral position at axisymmetric position on opposite surface of
A pair of places that are close to each other when they are
Providing the positioning members 14 and 26, The positioning members 14 and 26 are used when the door mirrors fall rearward.
The frame is located above the positioning member 14 on the shaft base side.
Tapered surface 14 on which the positioning member 26 on the side rides
a, 26a Folding door door characterized by the following:
Ra. 2. The coil spring 30 has an upper end 3
0a in the thrust or radial direction, and
While the lower end 30b is radially or
The folding door mirror according to claim 1, wherein the folding door mirror is bent in the last direction and locked on the upper surface of the frame 2 .