JP2882621B2 - Fixing device for reflector - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for fixing a reflecting mirror in an optical device.

[0002]

2. Description of the Related Art In most cases, a glass mirror is used as a reflecting mirror for turning a light beam to approximately 90 degrees.
In recent years, in order to reduce the weight of an apparatus to be used as a whole, a mirror is often formed by metal plating using a plate made of a synthetic resin instead of the glass of the reflector. When the reflector configured as described above is mounted on the support frame member of the apparatus to be used and used, the mounting of the reflector tends to be unstable due to its light weight. Therefore, the mounting of the reflector has been stabilized by abutting a metal spring on the rear surface of the reflector having the above-described configuration.

FIG. 4 is a perspective view showing the positional relationship between a reflecting mirror and a leaf spring in the prior art. In FIG. 4, the back side of the reflecting mirror 1 is supported by a leaf spring 2. Leaf spring 2
Is provided with a screw hole 3 for attaching a leaf spring at a distal end thereof, and is attached to a case (not shown) by a screw (not shown) through the screw hole 3.

[0004] Regarding the reflecting mirror 1 and the leaf spring 2 shown in FIG.
FIG. 5 is a side cross-sectional view of the reflecting mirror 1 taken through the screw hole 3 in a longitudinal direction and viewed from the side. In FIG. 5, a light ray incident as L1 from the left side of the figure is reflected by the reflecting mirror 1 and exits as L2 downward in FIG.

In FIG. 5, when the initial adjustment is completed, it is ideal that the reflecting mirror 1 and the leaf spring 2 are kept in contact with each other through the point P by a lateral tangent line on the back surface of the reflecting mirror 1. However, when the leaf spring 2 is screw-fixed, the reflecting mirror 1 and the leaf spring 2
Was fixed. That is, when the material forming the reflector 1 is hard and heavy like metal, the reflection of light does not take an unexpected direction even when the contact point is fixed,
If the reflector 1 is made of a weak material and is lightweight, the light is reflected in an unintended direction, so that the device needs to be adjusted again.

SUMMARY OF THE INVENTION An object of the present invention is to provide a fixing device for a reflector in which the above-mentioned drawbacks are improved, the structure of which is simple, and the contact point between the reflector and the leaf spring is not one.

[0007]

According to the present invention, there is provided an apparatus for fixing a reflecting mirror, comprising: mounting a reflecting mirror formed by plating a material other than metal on a metal case; In a fixing device for a reflecting mirror, wherein the reflecting mirror is fixed from the back side by a holding member, the case includes:
A through-hole for guiding light from a light source, a recess provided at a position facing the through-hole, and a support frame member provided in the recess and mounting the reflecting mirror at a position facing the through-hole. An opening provided on the bottom side of the recess and guiding light reflected by the reflecting mirror; a leaf spring mounting portion provided at an opening end of the recess opposite to the opening; of and a projection for the leaf spring mounting provided on the end face contiguous to the open end of the recess in the upper side, the metal retainer is a metal retainer that consists in a rectangular leaf spring
A main body, a hole provided at the center of one end of the metal presser main body , a bent portion obtained by bending the other end of the metal presser main body on the opposite side of the hole at a substantially right angle; toward the bent portion side via a folding line portion provided on the hole side between the bent portion and the
From the main body of the metal retainer
And a reflector holder having its tip bent in an arc shape toward the metal retainer body side to form a reflector abutting portion, and located on both sides of the hole and in the same direction as the bent portion.
A projection that projects, and the metal retainer with respect to the case fits the hole into the leaf spring mounting projection ,
The protrusion is in contact with the end surface of the case, the bent portion is disposed in the recess, the reflector holder is in contact with the rear surface of the reflector, and a side portion is held by the leaf spring attachment portion, and The case is mounted so as to rotate through the hole using the leaf spring mounting projection of the case as a rotation axis and to slide the projection during rotation.

[0008]

In the fixing apparatus for a reflector according to the present invention, the reflector, which is formed by plating a material other than metal and is placed on the support frame member, is pressed from the back by a reflector holder of a metal holder. At the time of supporting, when a pressing force is applied to the reflector by the reflector press of the metal presser, the repelling force tends to ascend upward. Is fixed. The fixing of the reflecting mirror by the metal holding member is facilitated. And
The metal retainer is mounted by fitting a hole into a leaf spring mounting projection of the case. As a result, the metal retainer rotates through the hole around the leaf spring mounting projection of the case as a rotation axis, and slides on the end face of the case during rotation. Therefore, the reflecting mirror is always fixed by the tangential contact with the metal holding member, and it can be prevented from being fixed by only one point.

[0009]

The present invention will be described below with reference to examples. FIG.
FIG. 1 is a diagram showing a configuration of an example of the present invention. FIG. 1 illustrates a metal retainer made of a leaf spring such as that shown in FIG. The dashed line in FIG. 1 indicates the reflecting mirror 1, and the back surface of the reflecting mirror 1 is fixed by a metal retainer 20 (rectangular plate). Therefore, for the reflecting mirror 1, the incident light beam is in the direction of L1, for example, and the outgoing light beam is in the direction of L2. Alternatively, the reverse may be used. Here, the reflecting mirror 1 is formed by plating a metal or a material other than the metal.

As shown in FIG. 3, the case 10 has a through hole 11 for guiding light from a light source (not shown), a recess 12 provided at a position facing the through hole 11, and is provided in the recess 12. At the same time, the reflecting mirror 1 is
, An opening 14 for guiding the light reflected by the reflecting mirror 1, and an opening end of the recess 12 above the through hole 11, and a metal through two protrusions 28. A leaf spring holding portion 15 having an end face on which the holding member 20 is placed; a leaf spring mounting projection 16 provided on the leaf spring holding portion 15; a step portion 17 for regulating the lower limit position of the reflector holder 23; And a stopper 18 comprising a leaf spring mounting portion for preventing the holding member 20 from jumping upward.

[0011] metal retainer 20, as shown in FIGS. 1 and 2, a metal pressing that consists in a rectangular leaf spring
A tool body 20a, a hole 22 provided in the center of one end side of the metal pressing member body 20a, opposite the gold of the hole 22
A position restricting portion 27 composed of a bent portion obtained by bending the other end of the metal retainer main body 20a at a substantially right angle, and a folding line portion 23a provided on the hole 22 side between the hole 22 and the position restricting portion 27. Through
Metal holding member body 20a toward the position regulating portion 27 side
Anti Rutotomoni destination <br/> end cut and bent are cut and raised bifurcated was formed metal retainer body 20a reflector bent in an arc shape toward the side abutment portion 24a, the 25a from <br / > Position and located on both sides of mirror holder 23 and hole 22
It has a projection 28 protruding in the same direction as the regulating portion 23 .

The reflector holder 23 is a metal holder main body.
20a, leaving a folding line portion 23a parallel to the position regulating portion 27.
By providing a substantially U-shaped notch 20b,
It is cut off from the holder 20a
A folding line portion 23 is provided at the center of the separated plate material in the longitudinal center direction.
a with a substantially U-shaped cut 20 leaving a connecting portion 26 between
a substantially U-shaped cut 2 in which an opening is formed in the opposite direction to b.
3b is formed into a forked shape. Follow
On both sides of the connecting portion 26, a metal holding member body 20a is provided.
Two tongue pieces 24 and 25 extending in the longitudinal direction of
I have. On the tip side of the two tongue pieces 24 and 25,
Reflector mirror contact portion 24 bent in an arc shape
a, 25a are formed. And the reflector holder 2
Reference numeral 3 denotes a position regulating portion 2 at the front end side with respect to the folding line portion 23a.
Fold it up to the rising direction of 7
Have been. The metal presser 20 has one end provided with the hole 22 and the two projections 28 as a base, and the hole 22 serves as a rotation reference portion. As shown in FIG. 3, the hole 22 is used to attach the metal holding member 20 to the case 10.
By attaching the metal holding member 20 to the case 10 without using screws, the metal holding member 20 can be fixed to the case 10 by attaching the metal spring 20 to the leaf spring mounting protrusion 16. After fixing, the metal retainer 20 is fixed by the stopper 18 at the upper portion on the back side of the reflecting mirror 1.

[0013] As shown in FIG.
When the reflecting mirror 1 rotates in the M direction about the center of rotation, the projections 28 provided on both sides of the hole 22 slide on the leaf spring holding portion 15, so that the metal presser 20 rotates without moving up, down, left and right. Can be facilitated. The position restricting portion 27 of the metal retainer 20 is set so that when the metal retainer 20 is attached to the case 10, the distal end is located at a small distance from the step 17 of the case 10. The distance S is taken.

As shown in FIG. 3, when the reflector 1 is being pressed by the reflector holder 23, the metal holder 20 is moved in the left-right direction and the reflector holder 2 is displaced by the reflector 1.
When a force is applied to push up the metal retainer 20 upward by the repulsive force of 3, the stopper 18 provided on the case 10
The metal holder 20 contacts the side of the metal holder 20 to prevent its movement, so that the metal holder 20 does not come off the case 10.

As described above, according to the present embodiment, as shown in FIG. 3, when the metal retainer 20 is attached to the case 10, the reflecting mirror 1 is moved by the spring force of the metal retainer 20. Fixed to Youth, metal retainer 2
Even if the relative position between 0 and the reflecting mirror 1 is shifted, as shown in FIG. 3, the metal presser 20 is fixed to the case 10 without using a screw by using the repulsive force of the reflecting mirror presser 23. Therefore, even after fixing, it can be rotated with the hole 22 as a reference portion.
Therefore, the fixed state of only one point which occurs in the case of screw fixing can be prevented, and it can be always supported by a tangent line.

[0016]

As described above, according to the present invention, the reflecting mirror is easily fixed by the leaf spring having a simple structure, and if the adjustment is performed, the fixing state is a tangential contact. Also provides a stable fixation.

[Brief description of the drawings]

FIG. 1 is a diagram showing a configuration of an embodiment of the present invention.

FIG. 2 is a plan view seen from the direction of arrow A in FIG.

FIG. 3 is a diagram showing a configuration corresponding to the related art.

FIG. 4 is a diagram showing a conventional technique.

FIG. 5 is a diagram showing a cross section of FIG. 4;

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Reflecting mirror 10 Case 11 Through-hole 12 Depression 13 Support frame member 14 Opening 15 Leaf spring holding part 16 Leaf spring mounting projection 18 Stopper 20 Metal holder 22 Hole 23 Reflector mirror holder 24, 25 Tongue piece 24a, 25a Reflecting mirror Contact part 28 Projection

Claims (1)

(57) [Claims] 1. A reflecting mirror comprising a reflecting mirror formed by plating a material other than metal and being placed in a case, and fixing the reflecting mirror from the back by a metal retainer attached to the case. In the fixing device, the case has a through hole for guiding light from a light source, a recess provided at a position facing the through hole, and a recess provided at the recess, and the case is provided at a position facing the through hole. A supporting frame member on which the reflecting mirror is mounted, an opening provided on the bottom side of the recess, for guiding the light reflected by the reflecting mirror, and an opening end of the recess opposite to the opening; A leaf spring mounting portion, and a leaf spring mounting projection provided on an end surface connected to an opening end of the concave portion on the upper side of the through hole, wherein the metal holding member is a rectangular leaf spring material. Composed
A metal retainer body that, a hole provided in the center one <br/> end side of the metal retainer body, a metallic push the opposite side of the hole
A bent portion obtained by bending the other end of the holding member body at a substantially right angle, and a bent line portion provided between the hole and the bent portion on the hole side. Bifurcated from the metal holder body
Tip the metal retainer body with the cut and raised to Jo
Bent toward the side to form a reflector abutment
With the reflector holder made, and located on both sides of the hole
A projection protruding in the same direction as the bent portion , wherein the metal presser fits the hole into the leaf spring mounting projection with respect to the case, and abuts the projection with an end surface of the case. Arranging the bent portion in the concave portion, abutting the reflector holder against the back surface of the reflector, holding a side portion by the leaf spring attaching portion, and the leaf spring attaching protrusion of the case. A fixing device for a reflecting mirror, which is mounted so as to rotate through the hole and to slide on the projection during rotation.