JP2541270Y2 - Aperture device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to an aperture device such as a video camera.

[Conventional technology]

Conventionally, in an aperture device such as a video camera, a plurality of aperture blades are opened and closed by a driving device as shown in FIGS. 21 and 22.

The driving device includes an operating lever 300 that transmits a drive to the aperture blade, a mounting cover 303 having columns 301 and 302,
A magnet having a rotating shaft 304 attached to the operating lever 300
305, a pair of coil frames 308, 309 that form the insertion grooves 306, 307 of the columns 301, 302 and have the element mounting groove 310, and cover the magnet 305, coils 311, 312 wound around these coil frames 308, 309, and the element mounting groove 310. Mounted magnet 30
Hall element 313 for detecting the amount of rotation of 5, coil frames 308, 30
9, a printed circuit board 315, 316 having terminals 322, 323 to which the coils 311, 312 are connected, and lead terminals 324, 325, and screws 317, 318 on the columns 301, 302.
Press cover 319 that can be attached with the printed circuit board 31
5,316 lead wire terminals 324,325 and four lead wires 320,321 connected to the Hall element 313, respectively.

In assembling this drive, the coil frames 308, 309
Coil 311, 312, printed circuit board 315, 316, lead wire 320
Prepare coil frame units with each attached,
After these pair of coil frame units are connected so as to sandwich the magnet 305, they are mounted on the mounting cover 303, the yoke 314 is inserted, and fixed with the holding cover 319.

By doing so, even if the coils 311, 312, the printed circuit boards 315, 316, and the lead wires 320 are attached to the coil frames 308, 309 to form a complicated configuration, these are already attached and unitized.
5. When combined with the mounting cover 303, the yoke 314, and the holding cover 319, it is easy to assemble.

[Problems to be solved by the invention]

However, when assembling the coil frame unit,
First, the coils 311 and 312 are wound around the two coil frames 308 and 309, respectively, and there is no place to stop the coil ends before flowing in the next manufacturing process. I have to stop it.

After that, two lead wires 320
The separate printed circuit boards 315 and 316 connected to the coil frames 308 and 3
The coil ends temporarily fixed must be soldered to the printed circuit boards 315 and 316 after individually adhering to the end faces of 09.

Further, when connecting the coils 311, 312 and the lead wires 320, the printed circuit boards 315, 316 are connected to the coils 311, 312 and the lead wires 32.
0 must be connected, and it takes time to connect both.

As described above, in the conventional structure, the workability of assembling the coil frame unit is very poor.

[Purpose of the invention]

This invention makes it easy to process the coil end after winding the coil around the coil frame and to electrically connect the coil to the cable.
An object of the present invention is to obtain a diaphragm device with good workability.

〔Example〕

An embodiment of the present invention will be described below with reference to FIGS. 1 to 20.

<Structure> As shown in FIGS. 1 to 5, the diaphragm device of this embodiment has a substrate, for example, a ground plate 1, two diaphragm blades 3, 5 mounted on the ground plate 1, and these diaphragm blades 3, 5. A holding plate 7 covering 5;
And a drive device 9 for driving the aperture blades 3,5.

As shown in FIG. 6, the base plate 1 has a connector mounting portion 11, a light receiving opening 12 provided in the center, side walls 13 and 14 provided on both sides of the light receiving opening 12, and arc-shaped operation holes 15 and 16. , An arc-shaped projection 17 provided at the tip, and mounting holes 18 and 19
, Insertion hole 20, fixing hole 21, tip projections 22, 23, side wall 1
Two guide parts provided on the 3, 14 side, for example, guide pins
24, 25, 26, 27 and ribs 2 provided outside working holes 15, 16
8, 29, ribs 30, 31 provided in the outer peripheral direction of the light receiving opening 12 from the inside of the working holes 15, 16, ribs 32, 33 provided near the side walls 13, 14, and the side walls 13, 14 Rib provided in the center between
34 and protective projections 35, 36 around the operating holes 15, 16 as shown in FIG.
And

As shown in FIG. 6, the pin hole 4
1, 42, fixing holes 43, mounting holes 44, and mounting pins 45 shown in FIG.

 The light receiving opening 12 is provided with a notch 46.

The guide pins 25 and 27 are, as shown in FIG.
It is located more inside.

The ribs 29, 33, 34 are formed higher than the other ribs 28, 30, 31, 32.

The aperture blade 3 engages with the guide pins 24 and 25 as shown in FIG. 9 and guides parallel to the side edges, for example, guide holes (long holes) 51 and 52.
And a guide, for example, a long hole 53 provided in a direction perpendicular to the moving direction of the diaphragm blade 3, a diaphragm opening edge 54 having an obtuse angle portion 60, and a triangular filter 55. When the diaphragm blade 3 is mounted on the main plate 1 as shown in FIG. 7, the width of the end portion facing the guide holes 51 and 52 is set so as not to contact the side wall 14.

The filter 55 has an engagement portion with the diaphragm blade 5 cut linearly, has a mounting hole 62 as shown in FIG. 3, and is fixed to the diaphragm blade 3 with an adhesive.

The aperture blade 5 is an obtuse angle provided at the center as shown in FIG.
A diaphragm opening 56 having a guide 61, guides engaged with the guide pins 26, 27 and parallel to the side edges, for example, guide holes (long holes) 57, 58, are provided in a direction perpendicular to the moving direction of the diaphragm blade 5. For example, a long guide 59 is provided. When the diaphragm blade 5 is mounted on the main plate 1 as shown in FIG. 7, the width of the end portion facing the guide holes 57, 58 is set so as not to contact the side wall 13.

The holding plate 7 has an opening 70 facing the light receiving opening 12 of the base plate 1 and operating holes 71 and 72 facing the operating holes 15 and 16 as shown in FIG.
And holes 73, 74, 75, 76 facing the holes 18, 19, 20, 21; pin holes 77, 78, 79, 80 facing the guide pins 24, 25, 26, 27; and operating holes 71, Ribs 81, 82 protruding toward the aperture blades 3, 5 provided on the periphery of 72, and ribs 83, 84 provided inside the operation holes 71, 72.
And ribs 85, 86 provided on the side between the opening 70 and the operation holes 71, 72, and ribs 87, 88 provided on the tip side from the opening 70.
And engaging portions 89 and 90 having holes (not shown) for engaging with the tip protrusions 22 and 23.

The holding plate 7 configured as described above engages the engaging portions 89 and 90 with the tip protrusions 22 and 23 of the base plate 1 as shown in FIG.
The screw 91 is screwed into the hole 21 and attached.

As shown in FIG. 11, the driving device 9 includes a magnet having an operating portion, for example, an operating lever 100, a spring 101, an attaching cover 102 (attaching portion) attached to the main plate 1, a cylindrical yoke 103, and a rotating shaft 104. 105, and a rotating shaft 1 having shaft holes 113 and 114.
A pair of bearing washers 106 and 107 supporting both sides of 04, a pair of coil frames 108 and 109 covering the magnet 105, a flexible cable 110 for wiring a magnetic sensing element (for example, a flat wiring sheet), and a flexible cable 111 for coil wiring
(For example, a flat wiring sheet) and the holding cover 112
And

The operating lever 100 includes a mounting portion 120 to which the rotating shaft 104 is mounted, engaging portions such as driving pins 121 and 122 respectively engaging with the elongated holes 53 and 59 of the aperture blades 3 and 5, and a holding portion for holding one end of the spring 101. 123,124.

As shown in FIGS. 17A and 17B, the mounting cover 102 has mounting holes 125 and 126 opposed to the mounting holes 18 and 19 in FIG.
And insertion holes 129 opposed to the insertion holes 20
And a pair of hooks 130 for supporting one end side of the inserted coil frames 108, 109 in the rotation axis direction.
As shown in the figure, it is fixed to the main plate 1 by screws 147 and 148.

The distal end of the rotating shaft 104 has a partly cut peripheral surface and a D-shaped cross section. On the end face of the magnet 105, a pair of magnetic field processing display grooves 132 are provided as shown in FIG.

The coil frames 108 and 109 have the same configuration, and include a housing groove 133 for the magnet 105, a window 134 provided in the housing groove 133, and a housing groove 1.
The shaft groove 135 provided at both ends of the shaft 33, the mounting groove 136 for mounting the washers 106 and 107 provided in the shaft groove 135, the engagement hole 137, the engagement protrusion 138, and the hook 130 or a hook 172 described later are provided. 15 and FIG.
As shown in FIG. 16, an inner flange 140, an outer flange 141 having a pair of pin mounting holes 143 on both side end surfaces, a coil winding portion 142 provided between the inner flange 140 and the outer flange 141, and FIG. And a housing portion 144 for mounting the magnetic sensing element wiring flexible cable 110 provided on the outer flange 141 so that the coil 145 is wound around the coil winding portion 142 and connection protrusions such as metal Terminal pin 146 is attached, and the end of the coil 145 is wound around the terminal pin 146 and soldered.

The flexible cable 110 for magnetic detection element wiring is formed in a sheet shape, for example, of synthetic resin, and a mounting section 151 in which the magnetic detection element 150 such as a Hall element for detecting the amount of rotation of the magnet 105 is mounted and housed in the housing section 144, Shaft groove 135
18, a connection portion 154 connected to the connector 153 of FIG. 3, and four wires 155 for power output of the magnetic sensing element 150. So that it is attached.

The flexible cable 111 for coil wiring is formed of a synthetic resin sheet like the flexible cable 110 for magnetic detection element wiring, and has a hole 156 and a pin facing the shaft groove 135.
A mounting portion 158 (coupling portion) having four mounting portions facing the 146, for example, a pin hole 157, a connecting portion 160 connected to the connector 159 in FIG. 3, and four connecting portions connected to both ends of the two coils 145. 20, and is mounted on the magnetic sensing element wiring flexible cable 110 in the state of FIG. 18 as shown in FIG.

Then, the flexible cables 110 and 111 are guided to the base plate 1 side along the peripheral surface of the yoke 103, and the tapes as shown in FIG.
Fixed at 165.

The connectors 153 and 159 are connected to the printed circuit board 1 as shown in FIG.
Attached to 62. The printed circuit board 162 has a fixing hole 163 facing the fixing hole 43 in FIG.
And a hole that engages with the mounting pin 45, and is fixed to the connector mounting portion 11 by a screw 164.

The cover 112 includes a hole 170 facing the four pins 146, two round holes 171 and a hook 172 engaging with the hook engaging groove 139, as shown in FIGS. 12 (A) and 12 (B). 3 and 4
They are attached to the coil frames 108 and 109 as shown in the figure.

With the above configuration, the pair of terminal pins 146 are attached to the end faces of the coil frames 108 and 109 on the opposite side to the mounting cover 102 side, so that the coil frames 108 and 109
After winding the 145, the end of the coil 145 can be connected to the terminal pin 146, and the coil end does not need to be temporarily fixed, and workability is good. Further, the terminal pin 146 connected to the coil 145 protrudes, and the flexible cable 111 for coil wiring is protruded.
It is possible to check the operation from the terminal pin 146 with or without attaching, and it is possible to easily confirm the operation.

Furthermore, since the pin hole 157 of the coil wiring flexible cable 111 is fitted to the terminal pin 146 around which the end of the coil 145 is wound and soldered, the coupling between the coil 145 and the coil wiring flexible cable 111 is easy. In addition, automatic assembly is easy and wiring is not bulky. .

Then, connect the flexible cable 111 for coil wiring to 4
Since it is soldered to the two terminal pins 146, the two divided coil frames 108 and 109 can be connected without providing any special connecting means.

Also, by arranging the magnetic sensing element wiring flexible cable 110 below the coil wiring flexible cable 111 connected to the terminal pin 146, the magnetic sensing element wiring flexible cable 110 can be attached without providing a means for fixing the same. In addition, both flexible cables 110 and 111 for coil wiring can be overlapped, and are not bulky.

<Operation> In such a configuration, the aperture device is inserted into the lens barrel of the camera across the optical path, the distal end is positioned by the protrusion 17, and is fixed to the lens barrel via the holes 43 and 163 with screws. .

In such a state, when the aperture is set by a manual operation, the coil 145 is excited so that an output corresponding to the set value is obtained from the magnetic detection element 150.
As a result, the magnet 105 rotates, and the operating lever 100 rotates clockwise in FIG. For this reason, the drive pin shown in FIG.
121 and 122 move in the elongated holes 53 and 59 of the diaphragm blades 3 and 5, the diaphragm blade 3 moves to the right by being guided by the guide pins 24 and 25, and the diaphragm blade 5 is guided by the guide pins 226 and 27. Move to the left to form the set aperture.

Under photographing conditions in which the aperture blades 3 and 5 should be fully stopped down, the photographing light is filtered by the aperture
As a result, the amount of light is reduced. Therefore, the filter 55 does not use the aperture device with an extremely small aperture, and hunting of the driving device 9 and diffraction of light are avoided.

When the excitation of the coil 145 is released, the diaphragm blades 3, 5 close to the state shown in FIG.

[Effect of the invention]

In this invention, terminal pins are provided on the end face opposite to the side where the coil frame is attached, so after winding the coil around the coil frame, the coil end can be connected to the terminal pins as it is, Work efficiency is much higher than in the case where the coil ends are temporarily fixed, the printed circuit board is mounted, and the coil ends are connected to the printed circuit board.

In addition, by attaching the coupling part of the flexible cable to the terminal pins provided on each of the two coil frames,
The terminal pins of the two coil frames and the flexible cable can be carried out in the same work process, and two printed boards to which lead wires are attached in advance as in the related art are separately mounted on the two coil frames, and then the coil ends are mounted. Workability is better than that of mounting on each printed circuit board.

Further, since the terminal pins are provided on the end face opposite to the mounting portion side of the coil frame, it is possible to confirm the operation from the terminal pins regardless of whether the wiring flexible cable is connected to the terminal pins. .

[Brief description of the drawings]

1 to 20 show one embodiment of the present invention.
Each figure represents the following: 1 is a front view of the drawing device, FIG. 2 is a bottom view of the drawing device, FIG. 3 is a rear view of the drawing device, FIG. 4 is a left side view of the drawing device, and FIG. 6 shows the structure of the main plate 1, FIG. 7 shows the state where the diaphragm blades 3 and 5 are placed on the main plate 1, and FIG. 8 shows the structure of the holding plate 7. 9 and 10 show the shapes of the two diaphragm blades 3 and 5, FIG. 11 shows the configuration of the driving device 9, and FIGS. 12 (A) and 12 (B) show the cover. 13 shows the structure of 112, FIG. 13 is a front view of the coil frame 108, FIG. 14 is a plan view of the magnet 105, FIG. 15 is a plan view of the coil frame 109, FIG. 16 is a side view of the coil frame 109, 17 (A) and 17 (B) show the structure of the mounting cover 102, and FIG. 18 shows the coil frames 108 and 109.
FIG. 19 shows a state where the flexible cable 110 for wiring the magnetic detection element is attached to
FIG. 20 is a view showing a state in which a mounting portion 151 of a flexible cable 110 for magnetic sensing element wiring is attached, and FIG.
FIG. 10 is a diagram showing a state where a flexible cable 10 and a coil wiring flexible cable 111 are attached. FIG. 21 and FIG. 22 are views for explaining the prior art. 1 ... ground plate 3,5 ... diaphragm blade 7 ... holding plate 9 ... driving device 12 ... light receiving aperture 24-27 ... ... guide pin 51, 52 ... guide hole 53 ... ... elongated hole 55 ... ... filter 57 , 58… Guide hole 59… Elongated hole 100… Actuating lever 110… Flexible cable for magnetic sensing element wiring 111… Flexible cable for coil wiring 108, 109… Coil frame 121, 122… Driving pin 146… Terminal pin 157 ...... Pin hole

Claims (1)

(57) [Scope of request for utility model registration] 1. A semiconductor device comprising: a pair of substrates having a light receiving opening;
A diaphragm device for moving the pair of blades in opposite directions along the substrate to open and close the light-receiving opening, wherein the blade is rotated along a plane close to and parallel to the substrate to move the blades along the substrate. An operating part to be driven; a magnet having a rotation axis mounted orthogonally to the substrate at the center of rotation of the operation part; first and second coils sandwiching the magnet from both sides in a direction orthogonal to the rotation axis A frame, an attachment portion for inserting the first and second coil frames into the operation section, an attachment section for supporting the coil frames with respect to the substrate, and a coil wound around the first and second coil frames, respectively. The first and second coils are provided so as to protrude from end faces of the first and second coil frames opposite to the rotation axis in the rotation axis direction.
A pair of terminal pins to each of which an end of the second coil is electrically connected; and both the terminal pins provided on the first coil frame and the terminal pins provided on the second coil frame. A diaphragm device comprising: a wiring flexible cable having a coupling portion that is coupled to each other.