JP2587730B2 - Rotating irradiation unit - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a novel rotary irradiation unit. More specifically, the present invention facilitates the support of a rotating plate supporting a reflecting mirror and a light bulb, and ensures the support.

[0002]

2. Description of the Related Art FIG. 7 shows an example of a conventional rotary irradiation unit a.
Is shown.

[0003] Reference numeral b denotes a base, on which a mounting hole c is formed.

A rotary plate d has a boss e projecting downward from the center thereof, and the boss e has a supported hole f formed therethrough. A concave portion g is formed in the center of the upper surface of the rotating plate d so as to surround the supported hole f. Further, the concave portion g is formed in the concave portion g in an annular shape close to the opening edge of the supported hole f. A ridge h is formed, the amount of extension of which is smaller than the depth of the recess g.

Reference numeral i denotes a socket, and a mounting hole j is formed in the center of the bottom surface.

[0006] k is a pipe-shaped metal shaft.

Thus, the lower end of the shaft k is connected to the base b
, The shaft k is inserted into the supported hole f of the rotating plate d, and the upper end of the shaft k is inserted through the mounted hole j of the socket i. The portion protruding below the base b and the portion protruding upward from the bottom of the socket i are both swaged together, thereby rotatably supporting the rotating plate d on the base b.

The rotating plate d supports a not-shown reflecting mirror, and the socket i supports an unillustrated light bulb in a detachable manner.

[0009]

However, in the above-described conventional rotary irradiation unit, since the upper and lower ends of the shaft k are crimped together and the rotary plate d and the socket i are simultaneously mounted, the upper and lower crimping points are required. If the caulking is not constant and the caulking is too strong, there is a risk that the member, especially the center part of the rotating plate d, may be damaged. Despite the difficulty in managing the caulking force in the caulking process, there is a problem that the incidence of defects is high.

[0010]

In order to solve the above-mentioned problems, a rotary irradiation unit according to the present invention comprises: a cylindrical collar having a flange erected from a base and having a lower end;
A cylindrical shaft that supports the lower end of a socket that detachably supports a light bulb, and a rotating plate that has a cylindrical supported portion at the center and has a reflecting mirror supported on the upper surface thereof. Part is rotatably fitted to the collar, the upper end of the collar is fitted to the shaft, and a set spring made of a wire spring material is engaged with a notch formed at a position corresponding to the shaft and the collar. The two parts are combined, and the supported portion of the rotary plate is supported between the flange of the collar and the lower end of the shaft in a sandwiched manner.

[0011]

According to the rotary irradiation unit of the present invention,
If the dimensional accuracy of the shaft, the collar, and the supported part of the rotating plate is precisely accurate, the distance between the flange of the collar and the lower end of the shaft is always constant, so the rotating plate has no backlash and tightness. Without being too much, it is rotatably supported by the collar in the best condition.

Further, since the connection between the shaft and the collar is made by engaging the set spring with the notch formed in both the shaft and the collar, the operation for connecting the two is easy.

[0013]

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 arranged and used in a colorless transparent or colored transparent glove (not shown).

Reference numeral 2 denotes a metal 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 formed of metal, for example, 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.

Furthermore, cutout holes 7, 7 reaching the central hole are provided in a portion located on a side substantially opposite to a position near the upper end of the peripheral wall of the collar 4.
Are formed.

A portion of the collar 4 below the flange 5 is inserted into the mounting hole 3 of the chassis 2 from above.
The portion 4a projecting downward from the chassis 2 is swaged and fixed to the chassis 2 so as to sandwich the opening edge of the mounting hole 3 by the swaged portion and the flange 5.

Reference numeral 8 denotes a rotating plate, which is formed of a suitable synthetic resin.

A large recess 9 is formed at the center of the rotating plate 8, and a cylindrically supported portion 10 is integrally formed at the center of the recess 9.

The rotating plate 8 is supported by the supported portion 10.
The collar 4 is inserted through the collar and is rotatably supported.
Before that, the slide washer 11 is fitted over the collar 4,
The lower end of the supported part 10 is connected to the collar 4 via the washer 11.
Is seated on the flange 5. The groove 6 of the collar 4 is opposed to substantially the center of the inner peripheral surface of the supported portion 10 in the vertical direction, and the groove 6 is filled with grease (not shown).

Reference numeral 12 denotes a substantially cylindrical shaft having a stopper edge 13 projecting inward from the upper end thereof, and a caulking piece 14 projecting upward from the inner peripheral edge of the stopper edge 13. Are integrally formed of metal, for example, stainless steel.

Further, a notch hole 1 reaching a central hole is formed in a portion of the shaft 12 which is located on the opposite side of the position near the upper end.
5 and 15 are formed.

Reference numeral 16 denotes a socket, and 17 denotes a tube. A mounting hole 18 is formed in a bottom wall of the tube 17. Reference numeral 19 denotes an insulator slidably disposed in the cylindrical metal 17 in a vertical direction, and reference numeral 20 denotes an insulator 19.
Contact 21 supported at the center of the contact 2
The code connected to 0.

The crimping piece 14 of the shaft 12 is inserted from below into the mounting hole 18 of the socket sleeve 17, and the portion of the crimping piece 14 protruding into the sleeve 17 is swaged to thereby secure the upper end of the shaft 12. Is fixed to the socket 16.

The shaft 12 is fitted to the collar 4 from above. The outer diameter of the collar 4 and the inner diameter of the shaft 12 are set such that they are fitted almost exactly. Then, the shaft 12 is externally fitted to the upper end of the collar 4, and when the stopper edge 13 of the shaft 12 abuts on the upper end of the collar 4, the notch holes 7, 7, and 15 of both
15 are located at the same height as each other.

Reference numeral 22 denotes a washer having good sliding properties inserted between the upper end of the supported portion 10 of the rotating plate 8 and the lower end of the shaft 12.

Reference numeral 23 denotes a set spring formed by bending a wire spring material into a substantially "U" shape, and both ends are bent so as to approach each other. The interval between the portions 23a, 23a (hereinafter, referred to as "engaging portions") extending in parallel with each other is slightly smaller than the inner diameter of the collar 4.

Then, the set spring 23 is positioned so as to sandwich the shaft 12 with the space between the engagement portions 23a, 23a slightly widened, and the engagement portions 23a, 23a are inserted through the cutout holes 15, 15 of the shaft 12. The collar 4 is engaged with the cutout holes 7, 7.

Thus, the shaft 12 is externally fitted to the upper end of the collar 4.

In this manner, the rotating plate 8 is rotatably supported by the collar 4 between the flange 5 and the lower end of the shaft 12. The dimensions of the collar 4, particularly the distance from the upper surface of the flange 5 to the upper end of the collar 4, the distance from the lower surface of the stopper edge 13 of the shaft 12 to the lower end of the shaft 12, and even the length of the supported portion 10 of the rotating plate 8. If formed accurately, the rotating plate 8 is not tight and is rotatably supported by the collar 4 in an optimal state in which it is not loosened.

Reference numeral 24 denotes a motor, which is fixed to the upper surface of the chassis 2 so that its rotation shaft 24a projects upward. A cylindrical transmission roller 25 is fixed to a rotating shaft 24 a of the motor 24, and a knurl extending in the axial direction is formed on an outer peripheral surface of the transmission roller 25.

Reference numeral 26 denotes a friction belt made of rubber or the like fixed to the outer peripheral surface of the rotary plate 8.
The transmission roller 25 is pressed into contact with the transmission roller 25. Therefore, when the motor 24 rotates, the rotation is transmitted to the rotating plate 8 via the transmission roller 25 and the friction belt 26, and the rotating plate 8 rotates.

Reference numeral 27 denotes a reflecting mirror, which has a shape in which two rotating parabolic reflectors 28, 28 are connected back to back and their respective focal points are made common. An insertion hole 29 is formed in the lower surface of the portion.

Both ends in the optical axis direction of the bottom surface of the reflecting mirror 27 are flat portions 30, 30.
Positioning protruding portions 31, 31 are provided protruding slightly inward from the ends of 0, 30. Furthermore, the engagement pieces 32, 3
2 are projected downward, and the engagement pieces 32, 32
Engaging claws 32a, 32a protrude from the inner surface of the lower end portion of the.

Reference numerals 33, 33 denote engagement holes formed at positions close to the recess 9 in a region between the recess 9 and the outer peripheral edge of the rotating plate 8. On the upper surface of the portion between the engaging holes 33, 33 and the outer peripheral edge, there are formed concave portions 34, 34 which are long in the radial direction. , 35 are formed.

Thus, the flat portion 30 of the reflecting mirror 27,
30 is located in the recesses 34, 34 of the rotating plate 8, and the positioning projections 31, 31 are engaged with the positioning holes 35, 35. When the lower ends of the engaging pieces 32 of the reflecting mirror 27 are applied to the engaging holes 33 of the rotating plate 8 and the reflecting mirror 27 is pressed downward in this state, the engaging pieces 32 and 32 become The engaging claws 32a, 32a are bent outward while the engaging claws 32a, 32a
3, the engaging claws 32a, 32a engage the engaging holes 33, 33 on the lower surface. At this time, both ends of the lower end of the reflecting mirror 27 abut against the outer inner surfaces of the recesses 34, 34 of the rotary plate 8, and the positioning projections 31, 31
5 and 35, which come into contact with the outer inner surfaces, and
1 and the gap 3 between the inner surfaces of the positioning holes 35, 35.
6, 36 are formed.

As described above, the reflecting mirror 27 is rotated by the rotating plate 8.
At this time, the socket 16 is located in the insertion hole 29 of the reflecting mirror 27. Reference numeral 37 denotes a light bulb removably attached to the socket 16, and a filament (not shown) is located at a common focal point of the reflectors 28.

[0039]

As is apparent from the above description, the rotary irradiation unit according to the present invention comprises a reflecting mirror rotatable with respect to the base and a bulb fixed to the base and positioned in the reflecting mirror. A rotating irradiation unit with a cylindrical collar having a flange at the lower end erected from the base,
A cylindrical shaft that supports the lower end of a socket that detachably supports a light bulb, and a rotating plate that has a cylindrical supported portion at the center and has a reflecting mirror supported on the upper surface thereof. Part is rotatably fitted to the collar, the upper end of the collar is fitted to the shaft, and a set spring made of a wire spring material is engaged with a notch formed at a position corresponding to the shaft and the collar. The two are combined, and the supported portion of the rotating plate is supported between the flange of the collar and the lower end of the shaft in a sandwiched manner.

Therefore, in the rotary irradiation unit of the present invention, the distance between the flange of the collar and the lower end of the shaft is always constant as long as the dimensional accuracy of the shaft, the collar, and the supported portion of the rotary plate is accurate. Since it is constant, the rotating plate has no play and is not too tight, and is rotatably supported by the collar in the best condition.

Further, since the connection between the shaft and the collar is made by engaging the set spring with the notch formed in both the shaft and the collar, the connection work between the two 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. It is not something to be done.

[Brief description of the 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 the line II-II of FIG.

FIG. 3 is a plan view partially cut away.

FIG. 4 is a schematic perspective view.

FIG. 5 is an enlarged view showing a portion V in FIG. 1;

FIG. 6 is an enlarged perspective view showing a main part in an exploded manner.

FIG. 7 is a 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 4 Collar 5 Flange 7 Collar notch 8 Rotating plate 10 Supported part 12 Shaft 15 Shaft notch 16 Socket 23 Set spring 27 Reflector 37 Light bulb

Claims (1)

(57) [Claims] 1. A rotating irradiation unit comprising: a reflecting mirror rotatable with respect to a base; and a light bulb fixed to the base and positioned in the reflecting mirror. A cylindrical collar having a cylindrical shaft having a lower end of a socket for detachably supporting a light bulb, a rotating plate having a cylindrical supported portion at a central portion and a reflecting mirror supported on an upper surface thereof. The rotatably supported portion of the rotating plate is rotatably fitted to the collar, and the upper end of the collar is fitted to the shaft. A rotating irradiation unit, wherein a set spring is engaged to connect the two, and a supported portion of the rotating plate is supported between the flange of the collar and the lower end of the shaft in a sandwiched manner.