JP2563853B2 - Rotating irradiation unit - Google Patents

Description

Detailed Description of the Invention

[0001]

FIELD OF THE INVENTION The present invention relates to a novel rotary irradiation unit. More specifically, it is intended to simplify the attachment of the reflecting mirror to the rotating plate and reduce the number of parts.

[0002]

2. Description of the Related Art FIG. 6 shows an example of a conventional rotary irradiation unit a.
Indicates. This rotary irradiation unit a is disclosed, for example, in JP-A-63-
This is disclosed in Japanese Patent No. 138602.

Reference numeral b is a chassis, and a rotating plate c is rotatably supported on the chassis b.

Reference numeral d denotes a reflecting mirror, which is fixed to the rotating plate c with screws e and e.

Reference numeral f denotes a light bulb which is fixedly supported by the chassis b and is arranged at the center of the reflecting mirror through an insertion hole g formed at the center of the lower surface of the reflecting mirror d.

[0006]

However, in the above-mentioned conventional rotary irradiation unit a, since the reflecting mirror d is attached to the rotary plate c by the screws e and e, the number of parts is increased and the attachment is increased. There is a problem that the work is complicated.

[0007]

In order to solve the above-mentioned problems, the rotary irradiation unit of the present invention forms an engaging hole and a positioning hole in a rotary plate rotatably supported with respect to a base, 2 rotations with flexible synthetic resin
A flat surface is formed at both ends of the lower surface of the reflecting mirror formed in a shape in which parabolic reflectors are connected back to back.
Positioning protrusions are formed on the lower surface of the
An engaging piece projecting on the upper surface of the rotating plate.
Place it and engage the positioning protrusion with the positioning hole,
Engage the engaging pieces by pressing the reflector toward the rotating plate
It is locked in the hole .

[0008]

According to the rotary irradiation unit of the present invention,
No screws are required to attach the reflector, and the number of parts is reduced accordingly. Also, when attaching the reflector, align the reflector with the rotating plate and press the reflector toward the rotating plate. The installation work is easy because all you have to do is

[0009]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a rotary irradiation unit according to the present invention.

In FIG. 1, reference numeral 1 denotes a rotary irradiation unit, which is usually used by being arranged in a colorless and transparent or colored transparent globe (not shown).

Reference numeral 2 is a metallic chassis, and the chassis 2 is fixed in the glove. A mounting hole 3 is formed substantially at the center of the chassis 2.

Reference numeral 4 denotes a cylindrical collar, which is made of metal such as stainless steel. A flange 5 protrudes slightly above the lower end of the collar 4. Further, a groove 6 extending annularly over the entire circumference is formed on the outer peripheral surface above the flange 5.

A portion of the collar 4 below the flange 5 is inserted into the mounting hole 3 of the chassis 2 from above,
A portion 4a protruding downward from the chassis 2 is swaged and fixed to the chassis 2.

Reference numeral 7 denotes a rotary plate, which is made of a suitable synthetic resin.

A large recess 8 is formed in the center of the rotary plate 7, and a cylindrical supported portion 9 is integrally formed in the center of the recess 8.

The collar 4 is inserted into the supported portion 9 of the rotary plate 7 to be rotatably supported.
In addition, before that, the sliding washer 10 is fitted on the collar 4,
The lower end of the supported portion 9 is seated on the flange 5 of the collar 4 via the washer 10. Further, the groove 6 of the collar 4 faces the substantially center of the inner peripheral surface of the supported portion 9 in the vertical direction, and the groove 6 is filled with grease (not shown).

Reference numeral 11 denotes a substantially cylindrical shaft having a stopper edge 12 projecting inward from its upper end, and a caulking piece 13 projecting upward from the inner peripheral edge of the stopper edge 12 is formed. , These are integrally formed of metal, for example, stainless steel.

Reference numeral 14 is a socket, and 15 is its barrel. An attachment hole 16 is formed in the bottom wall of the barrel 15. Reference numeral 17 is an insulator that is slidably arranged in the cylinder 15 in the vertical direction, and 18 is an insulator 17
Contact supported in the center of the, 19 is contact 1
It is a cord connected to 8.

The caulking piece 13 of the shaft 11 is inserted into the mounting hole 16 of the socket tube 15 from below, and the portion of the caulking piece 13 projecting into the tube 15 is caulked to upper end of the shaft 11. The socket 14 is fixed to.

The shaft 11 is fitted onto the collar 4 from above. The outer diameter of the collar 4 and the inner diameter of the shaft 11 are set so that both are press-fitted. Therefore, by fitting the shaft 11 onto the collar 4, the shaft 11 is fixed to the upper end of the collar 4. . Also,
The shaft 11 is externally fitted until its stopper edge 12 abuts on the upper end of the collar 4.

Reference numeral 20 is a washer having a good slipperiness, which is inserted between the upper end of the supported portion 9 of the rotary plate 7 and the lower end of the shaft 11.

In this way, the rotary plate 7 is rotatably supported by the collar 4 between the flange 5 and the lower end of the shaft 11. The collar 4, in particular, the dimension from the upper surface of the flange 5 to the upper end of the collar 4, the dimension from the lower surface of the stopper edge 12 of the shaft 11 to the lower end of the shaft 11, and even the length dimension of the supported portion 9 of the rotary plate 7. If accurately formed, the rotary plate 7 is rotatably supported by the collar 4 in an optimal state in which it is not tight and does not come loose.

Reference numeral 21 is a motor, which is fixed to the upper surface of the chassis 2 with its rotating shaft 21a projecting upward. A cylindrical transmission roller 22 is fixed to the rotary shaft 21a of the motor 21, and a knurl extending in the axial direction is formed on the outer peripheral surface of the transmission roller 22.

Reference numeral 23 is a friction belt made of rubber or the like fixed to the outer peripheral surface of the rotary plate 7.
The transmission roller 22 is pressed against. Therefore, when the motor 21 rotates, the rotation is transmitted to the rotary plate 7 via the transmission roller 22 and the friction belt 23, and the rotary plate 7 rotates.

Reference numeral 24 denotes a reflecting mirror, which has a shape in which two rotating paraboloidal reflectors 25, 25 are connected back to back and so that their respective focal points are common, and the connection is made. An insertion hole 26 is formed in the lower surface of the portion.

Both end portions in the optical axis direction of the bottom surface of the reflecting mirror 24 are flat portions 27, 27.
Positioning projections 28, 28 are provided so as to project from the tips of 7, 27 to the inside of the baffle. Further, from the position closer to the inside than the positioning protrusions 28, 28, the engaging pieces 29, 2
9 is provided so as to project downward, and the engaging pieces 29, 29
Engaging claws 29a, 29a are provided on the inner surface of the lower end of the projecting portion.

Numerals 30 and 30 are engagement holes formed in the rotating plate 7 in the region between the recess 8 and the outer peripheral edge in a position close to the recess 8. Further, recesses 31 and 31 which are long in the radial direction are formed on the upper surface of the portion between the engagement holes 30 and 30 and the outer peripheral edge, and the positioning hole 32 is located at a position near the outer peripheral edge of the recesses 31 and 31. , 32 are formed.

Therefore, the plane portion 27 of the reflecting mirror 24,
27 is positioned in the recesses 31, 31 of the rotary plate 7, and the positioning protrusions 28, 28 are engaged with the positioning holes 32, 32. Further, if the lower ends of the engaging pieces 29, 29 of the reflecting mirror 24 are applied to the engaging holes 30, 30 of the rotary plate 7 and the reflecting mirror 24 is pressed downward in this state, the engaging pieces 29, 29 will be released. The engaging claws 29a and 29a are bent outward while the engaging claws 29a and 29a are engaged.
0 through downward, and the engaging pieces 29a, 29a are locked at the opening edges of the engaging holes 30 , 30 . At this time, the tips 27a, 27a of the flat portions 27, 27 of the reflecting mirror 24 come into contact with the outer inner surfaces 31a, 31a of the recesses 31, 31 of the rotary plate 7, and the positioning projections 28, 28 have positioning holes 32, 32, respectively.
The positioning projection 2 is brought into contact with the outer inner surfaces 32a, 32a.
8, 28 and inner inner surfaces 32b, 3 of the positioning holes 32, 32
Voids 33, 33 are formed between them and 2b.

As described above, the reflecting mirror 24 is attached to the rotating plate 7
Is attached to the upper surface of the reflecting mirror 24, and the socket 14 is positioned in the insertion hole 26 of the reflecting mirror 24. Reference numeral 34 denotes a light bulb detachably attached to the socket 14, and its filament (not shown) is located at a common focal point for the reflectors 25, 25.

[0030]

As is apparent from the above description, the rotary irradiation unit of the present invention has an engaging hole and a positioning hole formed in the rotary plate rotatably supported with respect to the base portion, thereby providing flexibility. Two synthetic paraboloidal anti-paraboloids
A flat surface is formed at both ends of the lower surface of the reflecting mirror in which the projectiles are connected back to back, and the flat surface is formed on the lower surface of the flat surface.
Form the positioning protrusion and attach the engaging piece to the bottom surface of the reflecting mirror.
Positioned by projecting and placing the flat surface of the reflecting mirror on the upper surface of the rotating plate.
Engage the positioning protrusion with the positioning hole and rotate the reflector.
The engagement piece is locked in the engagement hole by pressing it toward the rolling plate.
It is characterized by having been made to let .

Therefore, in the rotary irradiation unit of the present invention, the screw is not required for mounting the reflecting mirror, and the number of parts is reduced accordingly, and the mounting work is performed by mounting the reflecting mirror on the rotating plate. Since it is only necessary to align the positions and press the reflecting mirror toward the rotating plate, the mounting work is easy.

It should be noted that the specific shapes and structures shown in the above embodiments are merely examples for embodying the present invention, and the technical scope of the present invention is limitedly interpreted by these. It is not something that will be done.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing an embodiment of a rotary irradiation unit according to the present invention.

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

FIG. 3 is a plan view partially cut away.

FIG. 4 is a schematic perspective view.

5 is an enlarged view of a V portion of FIG. 1. FIG.

FIG. 6 is a cross-sectional view of a main part showing an example of a conventional rotary irradiation unit.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Rotation irradiation unit 2 Base part 7 Rotating plate 24 Reflecting mirror 25 Reflector 27 Planar part 28 Positioning projection 29 Engaging piece 29a Engaging claw 30 Engaging hole 32 Positioning hole

Claims (2)

(57) [Claims] 1. A rotary plate rotatably supported with respect to a base has an engaging hole and a positioning hole formed therein, and two synthetic parabolic reflectors are back-to-back made of a synthetic resin having flexibility.
A flat portion is formed on both ends of the lower surface of the reflecting mirror formed in a shape connected to each other, a positioning protrusion is formed on the lower surface of the flat portion, and an engaging piece is provided on the lower surface of the reflecting mirror. Of the reflector
Place the flat part on the upper surface of the rotating plate to position the positioning protrusion.
While engaging with the female hole, press the reflecting mirror toward the rotating plate
The rotary irradiation unit is characterized in that the engaging piece is thereby locked in the engaging hole . 2. An engaging claw is projected from an inner surface or an outer surface of a lower end portion of the engaging piece, and the engaging claw is locked to a lower opening edge of the engaging hole. The rotary irradiation unit according to claim 1.