JPH08188086A - Rear view mirror for vehicle - Google Patents

Abstract

PURPOSE: To improve assembling property of a wire spring. CONSTITUTION: A wire spring 9 is respectively provided with an elastic engaging part 90 and a detent part 91 formed by bending the end part on the first end part side, and an end engaging part 7 is respectively provided with an engaging part elastically engaged with the elastically engaging part 90 and a contact part 72 with which the detent part 91 is contacted so as to prevent rotation of the wire spring 9. As a result of this, when the detent part 91 of the wire spring 9 is contacted with the contact part 72 of the end engaging part 7, the wire spring 9 can be prevented from rotating, hence the wire spring 9 can be assembled easily and surely, and the assembling property of the wire spring 9 is further improved.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rear-view mirror for a vehicle such as a remote control mirror, and more particularly to a rear-view mirror for a vehicle in which the wire spring is more easily assembled.

[0002]

2. Description of the Related Art A conventional rearview mirror for a vehicle of this type will be described with reference to FIGS. In FIG. 8, 1 is a mirror. The mirror 1 has a plate shape whose surface is slightly convex. The surface of the mirror 1 may be flat. The edge of a mirror base 2 described later is fixed to the edge of the mirror 1, and the mirror base 2 is arranged on the back side of the mirror 1. In addition, this mirror 1 and mirror base 2
The fixing work of and is performed after the mirror base 2 is attached to the power unit 3 described later.

In FIG. 8, reference numeral 2 is a plate-shaped mirror base to which the mirror 1 is fixed. This mirror base 2
As shown in FIGS. 8 and 9, the main body portion 20 in the central portion,
An edge portion 2 which is a peripheral portion and which fixes the edge of the mirror 1.
It consists of 1. As shown in the figure, the body portion 20 has a shape in which a space portion for stealing meat to prevent sink marks and a rib for reinforcement are appropriately combined. A central portion of the main body portion 20 of the mirror base 2 is integrally projected rearward in the shape of a spherical convex portion, and a spherical concave-convex surface 22 is formed in the central portion of the mirror base 2. A through hole 23 is provided at the center of the spherical uneven surface 22. The center of the spherical concavo-convex surface 22 is located on an axis OO that is substantially orthogonal to the planes of the mirror 1 and the mirror base 2. The spherical uneven surface 2 of the main body 20 of the mirror base
The window portions 26 are provided on both sides of the shaft 2, and the shaft portions 24 are provided on the window portions 26, respectively. The axis O'-O 'of the shaft portion 24 is substantially orthogonal to the axis O-O passing through the center of the spherical uneven surface 22. Main body 20 of the mirror base 2
To the right side (or left side) and the lower side (or upper side) of the spherical uneven surface 22 of the above, that is, on the axis O′-O ′ and the axis O−.
A spherical concave pivot receiving portion 25 is provided on each of O and an axis orthogonal to the axis O′-O ′.

In FIGS. 8 and 9, 3 is the mirror 1
And a mirror drive unit, which is a so-called power unit, as a holder that holds a mirror base 2 (hereinafter, simply referred to as the mirror 1 and the like) in a tiltable manner. The power unit 3 includes, for example, left and right motors (not shown) and up and down motors (not shown) in the two-divided housings 30 and 31, respectively. The power unit 3
A spherical concave surface 32 is provided at the center of the housing 30 on the front side (mirror 1 side) of the boss portion 3 at the center of the spherical concave surface 32.
3 is projected integrally. Bearing portions 34 are provided on both sides of the spherical concave surface 32 of the front housing 30 of the power unit 3 in correspondence with the shaft 24. The power unit 3
Advancing / retreating through holes 35 are provided on the right side (or left side) and the lower side (or upper side) of the spherical concave surface 32 of the front housing 30 in correspondence with the pivot receiving portion 25. The boss portion 33 of the power unit 3 is inserted into the through hole 23 of the spherical uneven surface 22 of the mirror base 2 and the spherical concave surface 32 of the mirror base 2 is inserted into the spherical concave surface 32 of the power unit 3.
The spherical convex surface on the outside of the
The shaft 24 of the mirror base 2 is set in the bearing portion 34 of the power unit 3, and the forward / backward through hole 35 of the power unit 3 and the pivot receiving portion 25 of the mirror base 2 are opposed to each other, and the spherical concave surface 32 of the power unit 3 is Mirror base 2
The spherical concave-convex surface 22 is attached so as to be tiltable by attaching means described later.

In FIG. 8, reference numeral 4 designates a left and right advancing / retreating rod and a vertical advancing / retreating rod having a pivot end. The left and right advancing and retracting rods and the up and down advancing and retracting rods 4 are connected to the power unit 3
And the pivots at the tips of the left and right advancing and retracting rods 4 and the up and down advancing and retracting rods 4 are respectively rotatably fitted to the pivot receiving portions 25 of the mirror base 2. The base ends of the left and right advancing and retracting rods and the up and down advancing and retracting rods 4 are respectively connected to the motor. Only one of the above-mentioned left and right advancing / retreating rods and the up / down advancing / retreating rod 4 is shown in the drawing.

8 and 9, 5 and 50 and 5
Reference numerals 1 and 52 denote attachment means for attaching the mirror base 2 to the power unit 3 so as to be tiltable. This attachment means is composed of a hemispherical washer 5, a coil spring 50, a flat washer 51, and a screw 52. The hemispherical washer 5 is made of synthetic resin. A through hole 53 is provided at the center of the hemispherical washer 5. The hemispherical washer 5 has a through hole 53, and the power unit 3 has the through hole 53.
This semi-spherical washer 5 is fitted onto the boss 33 of the
The spherical convex surface on the outside of is set to the concave surface on the inside of the spherical concave and convex surface 22 of the mirror base 2. The coil spring 5 is provided between the inside of the semicircular washer 5 and the flat washer 51.
0 in the compressed state, and in that state, the flat washer 5
1 is fixed to the top end surface of the boss portion 33 of the power unit 3 by the screw 52. As a result, the hemispherical washer 5, the coil spring 50, and the flat washer 5 are
The mirror base 2 is attached to the power unit 3 so as to be tiltable by the attachment means composed of 1 and the screw 52. That is, the coil spring 5 in a compressed state between the hemispherical washer 5 and the flat washer 51.
With a spring return force of 0, the spherical convex surface outside the spherical concave and convex surface 22 of the mirror base 2 is pressed against the spherical concave surface 32 of the power unit 3 via the semicircular spherical washer 5.
The mirror base 2 is tiltably attached to the power unit 3.

The power unit 3 and the like are built in a mirror housing (not shown) whose front side is open, and the mirror 1 is arranged in the front opening of the mirror housing.

Next, the tilting movement of the mirror 1 etc. of the vehicle rearview mirror constructed as described above will be explained. First, for example, when the left and right motors are driven, the left and right moving rods 4
Moves back and forth, and accordingly, the spherical uneven surface 22 and the spherical concave surface 32
And the center of the hemispherical washer 5, that is, the point at which the axis O-O and the axis O'-O 'are orthogonal to each other, the mirror 1 or the like is moved in the left-right direction, for example, the axis O-O and the axis O'-O. It tilts around an axis orthogonal to ′. When the vertical motor is driven, the vertical moving rod 4 moves back and forth, and the mirror 1 and the like move up and down around the centers of the spherical concave and convex surface 22, the spherical concave surface 32 and the hemispherical washer 5. It tilts in a direction such as the axis O'-O '. It should be noted that the mirror 1 or the like is rotated relative to the power unit 3 by the contact between the inner side surface of the window portion 26 of the mirror base 2 and the outer side surface of the bearing portion 34 of the power unit 3 so that the mirror 1 or the like rotates with respect to the power unit 3 along the axis OO.
It is possible to prevent rotation around (the axis of the boss portion 33 and the screw 52).

[0009]

However, in the above-described conventional vehicle rearview mirror, the mounting means is a hemispherical washer 5.
Since the coil spring 50, the flat washer 51, and the screw 52 are included, the number of parts is large. Therefore, the cost is high. Further, since the number of parts is large, the number of assembling steps is large and the assembling time is long.

Further, in the above-mentioned conventional vehicle rearview mirror, the spherical convex surface of the semi-spherical washer 5 is replaced by the spherical concave and convex surface 22 of the mirror base 2.
The spherical concave surface of the mirror base 2 and the spherical convex surface on the outside of the spherical concave and convex surface 2 of the mirror base 2 on the concave spherical surface 32 of the power unit 3.
To attach the mirror base 2 to the power unit 3, that is, to attach the mirror base 2 to the power unit 3 by abutting the four spherical surfaces of the three parts of the mirror base 2, the power unit 3 and the hemispherical washer 5. Therefore, it is difficult to obtain the above-mentioned four spherical surfaces with high accuracy. Therefore, it is difficult to securely hold the mirror base 2 so that it can be tilted without rattling or one-sided contact. If there is rattling or one-sided contact as described above, the mirror 1 or the like chatters due to vibration of the vehicle, etc., and the visibility is lowered, and the tilting of the mirror base 2 is not performed smoothly.

Therefore, the applicant of the present invention intends to reduce the number of parts, and further, the rear-view mirror for a vehicle (Japanese Patent Application No. 6-24293) capable of securely holding the mirror base in a tiltable manner without rattling.
No. 3) was filed first. In this vehicle rearview mirror, a central engaging portion, an end engaging portion, and an end fixing portion are provided on a mirror base and a holding body, respectively, and the central portion of the wire spring in an elastically deformed state is the central engaging portion. Part is elastically engaged, the first end part is elastically engaged with the end engaging part, and the second end part is fixed to the end fixing part with a fixing tool, and the mirror base is held by the elastic force of the wire spring. It is attached to the body so that it can be tilted. As a result, this vehicle rearview mirror is composed of a wire spring that elastically engages the center engaging portion and the end engaging portion, and a fixture that fixes the wire spring to the end fixing portion. Therefore, the number of parts is small. Therefore, the cost can be reduced. Further, the wire base can be elastically engaged with the central engaging portion and the end engaging portion, and the mirror base can be tiltably attached to the holding body only by fixing the wire spring to the end fixing portion with a fixing tool. As a result, the number of assembling steps is small, the assembling time can be shortened accordingly, and the assembling property is improved. Furthermore, since hemispherical washers etc. are not used, the number of spherical surfaces is reduced,
The accuracy of the spherical surface can be obtained with high accuracy, and the mirror base can be securely held in a tiltable manner without rattling or one-sided contact.

The present invention relates to an improvement of the above-mentioned vehicle rearview mirror, and an object of the present invention is to provide a vehicle rearview mirror in which the assembling property of the wire spring is further improved.

[0013]

The present invention is directed to a first wire spring.
An elastic engaging portion and a detent portion formed by bending the end portion are respectively provided on the end side, and the end engaging portion elastically engages with the elastic engaging portion. , And a contact portion that prevents the wire spring from rotating around the axis of the wire spring by contacting the detent portion.

[0014]

According to the present invention, when the detent portion of the wire spring comes into contact with the contact portion of the end engaging portion, the wire spring can be prevented from rotating around the axis of the wire spring. For this,
A first end and a central portion of the wire spring are elastically engaged with the end engaging portion and the central engaging portion, respectively, and a second end of the wire spring is fixed to the end fixing portion with a fixture. In the assembling, the wire spring is prevented from rotating around the axis of the wire spring, so that the above-described assembling is easily and surely performed, and the assembling property of the wire spring is further improved.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a vehicle rearview mirror of the present invention will be described below with reference to FIGS. In the figure, the same reference numerals as those in FIGS. 8 and 9 indicate the same components. In FIGS. 1 to 6, 9
Is the mirror base 2 due to the elastic force of the elastically deformed state.
Is a wire spring in which the power unit 3 and the power unit 3 are in contact with each other so as to be tiltable. The wire spring 9 is made of a round bar-shaped elastic member. An elastic engaging portion 90 is provided on the first end portion side of one end portion of the wire spring 9 via a detent portion 91. That is, a detent portion 91 formed by bending the end portion in a direction opposite to the direction (the arrow A direction in FIG. 5) in which the elastic engaging portion 90 elastically engages the engaging portion 71 described later, and the detent portion 91. An elastic engaging portion 90 formed by bending the tip of the wire spring 9 in the opposite direction to the other end of the wire spring 9 is provided on the first end of the wire spring 9 in a crank shape, for example. A fixing portion 92 is provided at the second end of the other end of the wire spring 9. The fixing portion 92 is formed in an annular shape on a plane substantially perpendicular to the elastic engagement direction of the elastic engagement portion 90.

1 and 2, reference numeral 6 denotes a central engaging portion provided on the mirror base 2. The central engaging portion 6 has a short cylindrical shape integrally provided from the center of the bottom of the spherical concave surface inside the spherical concave and convex surface 22 of the mirror base 2. As shown in FIG. 1, both ends of each of the short cylindrical central engaging portions 6 have a linear shape with their ends widening as seen in a plane.
Further, as shown in FIG. 2, the engaging groove 60 having a V-shaped cross section is formed.
Is provided. Further, a linear fixing groove 61 is provided at the top of the central engaging portion 6 so as to be orthogonal to the engaging groove 60. A pin 62 is fixed in the fixing groove 61. The center portion of the wire spring 9 elastically deformed is elastically engaged with the pin 62 in a point contact state. The contact point between the pin 62 and the wire spring 9 coincides with the center of the spherical convex surface outside the spherical concave and convex surface 22 of the mirror base 2 and the spherical concave surface 32 of the power unit 3.

In FIGS. 1 and 2, reference numeral 63 denotes a reinforcing rib which is integrally provided radially in eight directions from the spherical concave surface inside the spherical concave and convex surface 22 of the mirror base 2 to the central engaging portion 6. is there. Further, in FIG. 2, reference numeral 64 denotes a cut groove provided on the spherical uneven surface 22 of the mirror base 2, and the wire spring 9 is inserted into the cut groove 64.
Further, in the mirror base 2 in this embodiment, a through hole is not provided in the center of the spherical uneven surface 2, but a central engaging portion 6 is provided in the center of the spherical uneven surface 22.

In FIGS. 1 and 2, 7 and 8 are end engaging portions and end fixing portions provided on both sides of the spherical concave surface 32 of the front housing 30 of the power unit 3, respectively. The end engaging portion 7 and the end fixing portion 8 are integrally provided from the front housing 30 of the power unit 3 corresponding to the window portion 26 of the mirror base 2. 3 to 5 and 7
As shown in FIG. 5, the end engaging portion 7 is provided with an insertion hole 70, and the elastic engagement portion 90 of the wire spring 9 in an elastically deformed state is elastically engaged with the upper edge of the insertion hole 70. A mating engaging portion 71 is provided. The lower edge 74 of the insertion hole 70 is inclined so that the engaging portion 90 of the wire spring 9 can be easily inserted into the insertion hole 70, as shown in FIGS. 2 and 5.

The end engaging portion 7 is a contact portion formed of two side walls for preventing the wire spring 9 from rotating around the axis of the wire spring 9 by contacting the detent portion 91 of the wire spring 9. 72 are provided respectively. The space between the two contact portions 72 communicates with the insertion hole 70.

The end engaging portion 7 is opposite to the fixing portion 92 on the second end side of the detent portion 91 of the wire spring 9 (the side on which the elastic engaging portion 90 is provided). The contact portion 73 is provided so as to abut the portion (a) to position the fixing portion 92 and the end fixing portion 8. The contact portion 73 for positioning is composed of a side wall of the engaging portion 71 sandwiched between the two contact portions 72. The power unit 3 in this embodiment does not have the central boss portion of the spherical concave surface 32 of the front housing 30. Further, the housings 30 and 31 divided into two are fixed by a screw 36.

An annular fixing portion 92 of the wire spring 9 in an elastically deformed state is fixed to the top surface of the end fixing portion 8 by a screw 93.

In this way, the central portion of the elastically deformed wire spring 9 is elastically engaged with the pin 62 of the central engaging portion 6 by point contact, and the elastic engaging portion 90 at the first end is the end. The engaging portion 71 of the engaging portion 7 is elastically engaged with the fixing portion 92 at the second end.
Is fixed to the end fixing portion 8 with a screw 93, and the elastic force of the wire spring 9 allows the mirror base 2 and the power unit 3 to be tiltably attached to each other.

In the vehicle rearview mirror according to the present invention in this embodiment, a detent portion 91 formed by bending the end portion of the wire spring 9 is provided on the first end portion side, and the end engaging portion 7 is provided with the detent portion 91. Since the contact portion 72 that prevents the wire spring 9 from rotating around the axis of the wire spring 9 by contacting the rotation stopper portion 91 is provided, the rotation stopper portion 91 of the wire spring 9 contacts the end engaging portion 7. By contacting the contact portion 72, it is possible to prevent the wire spring 9 from rotating around the axis of the wire spring 9. For this reason, in a state where the wire spring 9 is elastically deformed, the elastic engaging portion 90 and the central portion of the first end portion of the wire spring 9 are the engaging portion 71 and the central engaging portion 6 of the end engaging portion 7. Pin 62
When the so-called wire spring 9 is assembled, the wire spring 9 is elastically engaged with each other, and the fixing portion 92 at the second end of the wire spring 9 is fixed to the end fixing portion 8 with the screw 93. Since it is prevented from turning around, the above-mentioned assembling is performed easily and surely, and the assembling property of the wire spring 9 is further improved.

In particular, in this embodiment, the end portion of the wire spring 9 on the side of the first end portion is bent and rotated in a direction opposite to the direction in which the elastic engaging portion 90 elastically engages (the direction of arrow A in FIG. 5). The stopper portion 91 is formed, and the tip end portion of the stopper portion 91 is bent in the opposite direction to the fixing portion 92 on the side of the second end portion so that the elastic engaging portion 90 is formed.
Therefore, the thickness of the engaging portion 71 of the end engaging portion 7 with which the elastic engaging portion 90 elastically engages (in FIG. 5, from the upper surface of the end engaging portion 7 to the insertion hole 70 Upper edge engaging portion 7
Since the thickness B up to 1) B can be increased, the strength (rigidity) of the engaging portion 71 of the end engaging portion 7 with which the elastic engaging portion 90 of the shunt spring 9 elastically engages is increased. be able to.

Further, in this embodiment, the end engaging portion 7 has a portion of the detent portion 91 of the wire spring 9 opposite to the fixed portion 92 (on the side where the elastic engaging portion 90 is provided). Since the abutting portion 73 for contacting and positioning the fixing portion 92 and the end fixing portion 8 is provided, the elastic engaging portion 90 of the wire spring 9 is provided.
5 is inserted into the insertion hole 70 of the end engaging portion 7 and elastically engaged with the engaging portion 71, as shown by a chain double-dashed line in FIG. 5, a fixing portion of the detent portion 91 of the wire spring 9. The side opposite to 92 is the end engaging portion 7
The position of the wire spring 9 in the insertion direction (the direction of arrow C in FIG. 5) can be determined by contacting the contact portion 73 of. As a result,
The positions of the fixing portion 92 of the wire spring 9 and the end fixing portion 8 are easily determined, and the work of fixing the fixing portion 92 of the wire spring 9 to the end fixing portion 8 with the screw 93 can be easily performed.

In the above-described embodiment, the so-called remote control mirror in which the mirror base 2 is tilted by using the power unit 3 is used for a vehicle in which the mirror base 2 is tilted manually without using the power unit 3. It can also be applied to rearview mirrors. In this case, as the holder, not the power unit 3 but a mirror housing or the like that covers the mirror base 2 is used.

In the above-described embodiment, the mirror base 2 is provided with the central engaging portion 6 and the power unit 3 is provided with the end engaging portion 7 and the end fixing portion 8. However, conversely, the mirror base is provided. 2 may be provided with an end engaging portion and an end fixing portion, and the power unit 3 may be provided with a central engaging portion.

Further, in the above-described embodiment, the spherical convex surface on the outer side of the spherical concave and convex surface 22 of the mirror base 2 and the spherical concave surface 32 of the power unit 3 are fitted in a tiltable manner. Concave surface and power unit 3
The spherical convex surface provided in the above may be fitted so as to be tiltable.

In the above embodiment, as shown in FIG. 1, four advancing / retreating rods 4 are provided, but those having a function of tilting the mirror base 2 and the like in the left and right directions and the up and down directions are adjacent to each other. Two (for example, top and right, top and left, or bottom and right, or bottom and left) advance / retreat rods 4 and other 2
The advancing / retreating rod 4 of the book is a dummy for smoothly tilting the mirror base 2 and the like.

[0030]

As is apparent from the above, in the vehicle rearview mirror of the present invention, the wire spring assembling property is further improved.

[Brief description of drawings]

FIG. 1 is a plan view showing a part of a mirror base and a power unit, showing an embodiment of a vehicle rearview mirror of the present invention.

FIG. 2 is a sectional view taken along line II-II in FIG.

FIG. 3 is a sectional view taken along line III-III in FIG.

FIG. 4 is a view on arrow IV in FIG.

5 is a sectional view taken along line VV in FIG.

FIG. 6A is a plan view of the wire spring, and FIG. 6B is a side view of the wire spring.

FIG. 7 is an enlarged perspective view of an end engaging portion.

FIG. 8 is a partially cutaway side view showing a conventional vehicle rearview mirror.

FIG. 9 is an exploded perspective view of the mirror base, the power unit, and the mounting means.

[Explanation of symbols]

1 ... Mirror, 2 ... Mirror base, 22 ... Spherical surface, 26
... window portion, 3 ... power unit, 32 ... spherical concave surface, 6 ... central engaging portion, 62 ... pin, 7 ... end engaging portion, 70 ... insertion hole, 7
DESCRIPTION OF SYMBOLS 1 ... Engagement part, 72 ... Contact part for rotation stop, 73 ... Contact part for positioning, 8 ... End fixing part, 9 ... Wire spring, 90 ... Elastic engagement part, 91 ... Rotation stop part, 92 ... Fixing part, 93 ... Screw (fixing device).

Claims (6)

[Claims] 1. A mirror, a mirror base to which the mirror is fixed, a holder for holding the mirror base in a tiltable manner, and an end engaging portion provided on one of the mirror base and the holder. And an end fixing portion, a central engaging portion provided on the other of the mirror base or the holding body, and a first end portion of one end elastically engages with the end engaging portion in a state of being elastically deformed. The central portion is elastically engaged with the central engaging portion, the second end portion of the other end portion is fixed to the end fixing portion by a fixing tool, and the elastic force in the elastically deformed state causes the mirror base and A wire spring for press-contacting the holding body with each other so as to be capable of tilting with each other, wherein an elastic engaging portion and an end portion are bent on the first end side of the wire spring. The formed detent portion is provided, and the end engaging portion is provided with An engaging portion for elastically engaging the elastic engaging portion, and an abutting portion for preventing the wire spring from rotating around the axis of the wire spring by abutting the detent portion, are provided respectively. Characteristic vehicle rearview mirror. 2. A wire stopper, which is formed by bending an end of the wire spring in a direction opposite to a direction in which the wire elastically engages, and a tip end of the wire stopper is provided on the first end side of the wire spring. An elastic engaging portion formed by bending in the opposite direction to the side of the portion, and the end engaging portion is in contact with the detent portion, and the wire spring rotates around the axis of the wire spring. The rear-view mirror for a vehicle according to claim 1, further comprising: a contact portion that prevents the occurrence of damage and a thick engagement portion that elastically engages the elastic engagement portion. 3. The end engaging portion is in contact with a side of the wire spring preventing portion of the wire spring opposite to the second end portion side to position the second end portion and the end fixing portion. The vehicle rear-view mirror according to claim 1 or 2, further comprising: a contact portion. 4. The portion in which the mirror base and the holding body are press-contacted with each other so as to be tiltable is composed of a spherical concave surface and a spherical convex surface that are fitted so as to be tiltable with each other. The vehicle rear-view mirror according to 2 or 3. 5. The pin according to claim 1, 2 or 3, wherein the central engaging portion is provided with a pin that elastically engages the central portion of the wire spring in a point contact state. Rear-view mirror for vehicles. 6. The center engaging portion is provided with a pin that elastically engages the center portion of the wire spring in a point contact state, and the contact point between the pin and the center portion of the wire spring is The vehicle rear-view mirror according to claim 4, wherein the spherical concave surface and the spherical convex surface substantially coincide with each other.