JPH11271841A - View finder device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To strengthen the attaching strength of an eye cap and a diopter adjusting case by providing a sheet metal having a 1st aperture part on a principal plane and an elastic member having a 2nd aperture part nearly aligned with the 1st aperture part on the sheet metal and insert-molding the elastic member and the sheet metal. SOLUTION: By casting viscous elastic material in a metallic mold having the shape of the outside appearance of the eye cap 4 and pressuring it after installing the sheet metal in the metallic mold, the sheet metal and the elastic member 15 are insert-molded. In the molded eye cap 4, a fixed part 5a being one part of the sheet metal is exposed without being covered with the member 15. The aperture part 16 is formed nearly in the center of the eye cap 4 and two hole parts through which a screw is inserted in the case of fixing the eye cap 4 on the view finder are formed at the lower part of the eye cap 4. The 1st aperture part is worked in the center of the sheet metal and positionally aligned with the 2nd aperture part formed on the member 15 in the case of insert-molding. Then, the screw for fixing the eye cap 4 and the diopter adjusting case is inserted through the aperture.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a viewfinder device provided in a video camera or the like.

[0002]

2. Description of the Related Art A conventional viewfinder device will be described below with reference to the drawings.

FIG. 10 is a perspective view showing a configuration of a video camera using a conventional viewfinder device, and FIG.
Shows a state in which the viewfinder is stored, FIG. 4B shows a state in which the viewfinder is pulled out, and FIG. 4C shows a state in which the viewfinder is rotated. 11 is an exploded perspective view of a conventional viewfinder device, FIG. 12 is an exploded sectional view of an eye cap and a diopter adjustment case in the device, and FIG. 13 shows a state where the eye cap and the diopter adjustment case in the device are fitted. FIG. 14 is a cross-sectional view of a main part of an eye cap in the apparatus.

In FIG. 10, reference numeral 101 denotes a video camera main body; 102, a camera unit on which a subject image is incident;
Is a liquid crystal display capable of displaying an image of a subject being photographed by the camera unit 102 or an image reproduced from a magnetic tape (not shown), and an eyepiece lens for enlarging and displaying the image displayed on the liquid crystal display. With a view finder equipped with
It can be pulled out in the direction of arrow D as shown in FIG. 2B from the storage state shown in FIG. 2A, and can be stored in the direction of arrow G after use. Further, as shown in FIG. 3 (c), it is rotatable in directions indicated by arrows H and I. Further, the user uses the camera by looking in the direction of arrow A. The viewfinder 103 is provided rotatably with respect to the video camera main body 101 as shown by an arrow D. Reference numeral 104 denotes an eye cap attached to the tip of the viewfinder 103. The eye cap 104 is made of an elastic material such as rubber to protect the eyeball and the periocular skin when the user looks into the viewfinder 103.

In FIG. 11, reference numeral 105 denotes a diopter adjustment case which can be adjusted to a diopter corresponding to the user's visual acuity, and 106 denotes an adhesive applied to a portion of the diopter adjustment case 105 where the eye cap 104 is mounted. 1 for joining the eye cap 104 and the diopter adjustment case 105, and FIG.
1 is indicated by hatching to clarify the application position. 107 is a screw for fixing the diopter adjustment case 105 to the viewfinder 103; 108 is a rib provided on the diopter adjustment case 105;
The screw 107 is screwed into a screw hole provided in the screw hole 8 and having a screw groove therein. 110 is a viewfinder 103
A hole 111 through which the screw 107 is inserted is provided in the first opening 111 provided substantially in the center of the eye cap 104.
Reference numeral 2 denotes a second opening provided substantially at the center of the diopter adjustment case 105.
Are provided so as to substantially coincide with the first opening 111 when they are joined.

In FIGS. 12 and 13, reference numeral 113 denotes a projection provided at a lower portion of the side face of the eye cap 104,
Reference numeral 114 denotes a groove provided on the opposite side surface of the diopter adjustment case 105 and a projection 113 is engaged with the same.
04, extending downward and projecting inward at the lower end 11
Reference numeral 3 denotes a leg provided.

[0007] The operation of the viewfinder device configured as described above will be described below.

A video camera converts an optical signal of a subject incident from a camera unit 102 into an electric signal in a video camera main body 101 and displays the electric signal on a liquid crystal display unit provided in a viewfinder 103, or a loaded magnetic tape. Or recorded in To check the image being photographed or the image reproduced from the magnetic tape, pull out the viewfinder 103 in the direction of arrow D from the state shown in FIG. 10A, and then move the arrow H as shown in FIG. Rotate in the direction. Then, the user changes the image displayed on the liquid crystal display unit in the viewfinder 103 to the viewfinder 103.
Can be confirmed by visually observing from the direction of arrow A. Here, an eye cap made of an elastic material is attached to the tip of the viewfinder 103 to protect the user's eyeballs and periocular skin.

Next, the eye cap 104 shown in FIG.
The configuration of the viewfinder 103 will be described in detail with reference to FIGS.

First, the eye cap 104 is moved in the direction of arrow B in FIGS. Here, the interval X between the protrusions 113 provided at both ends of the eye cap 104 is
Since the width Y of the upper end portion 105a of the diopter adjustment case 105 is shorter than the width Y, when the eye cap 104 is attached to the diopter adjustment case 105, the interval X between the protrusions 113 at both ends is increased to at least the same dimension as the width Y. For this purpose, the leg 115 is bent in the direction of the arrow E. When the eye cap 104 is further moved in the direction of arrow B after the upper end 105a is sandwiched by the protrusion 113, the tip 113a of the protrusion 113 slides on the side surface of the upper end 105a of the diopter adjustment case 105. When the protrusion 113 slides to the groove 114, the bending of the leg 115 is eliminated as shown in FIG. 13, and the protrusion 113 and the groove 114 are engaged. At the time of such engagement, the eye cap 104 and the diopter adjustment case 105 are
6 and fixed by adhesion. At this time, eye cap 10
4 provided in the first opening 111 and the diopter adjustment case 1
The position of the second opening 112 provided at the position 05 substantially coincides with the position of the second opening 112.

Next, the diopter adjustment case 105 to which the eye cap 104 is attached is moved in the direction of arrow C and stored in the viewfinder 103 as shown in FIG. Then, the screw 107 is inserted through the hole 110 provided in the viewfinder 103, and the diopter adjustment case 105 is inserted.
The fixing of the eye cap 104, the diopter adjustment case 105, and the viewfinder 103 is completed by screwing into the screw holes 109 provided in the ribs 108.

[0012]

However, the above-described conventional configuration has the following problems. The problem will be described with reference to FIGS.

In FIG. 13, D represents an eye cap 104.
Is the effective opening width of the first opening 111. FIG. 14 is an enlarged sectional view of a main part of the eye cap 104, wherein A is the amount of protrusion of the protrusion 113, B is the thickness of the protrusion 113, C is the width of the leg 115, and E is the eye cap 1
04 is the overall height dimension.

The adhesive 106 has a tendency to decrease in adhesive force due to aging. As the adhesive force decreases, the possibility that the eye cap 104 is detached from the diopter adjustment case 105 increases. To prevent this detachment, use an eye cap 1
04 and the groove 114 of the diopter adjustment case 105
It is necessary to increase the engagement force with the. To increase the engagement force, it is necessary to increase the protrusion amount A and the thickness B of the protrusion 113. However, the effective opening width Z of the first opening 111
In consideration of this, the dimension of the protrusion amount A is limited in the inward direction (the direction toward the first opening), and must be increased in the outward direction, and the overall width dimension D of the eye cap 104 is reduced. It gets bigger.

The strength of the eye cap 104 attached to the diopter adjustment case 105, that is, the arrow F of the leg 115
In order to suppress the bending force in the direction, the width C of the leg 115 is required.
However, in order to secure the above-mentioned protrusion amount A, the width C must be increased in the outward direction.
The overall width dimension D of the eye cap 104 becomes large, and the eye cap 104 becomes large.

As described above, in the conventional configuration, if an attempt is made to secure the mounting strength of the eye cap 104 with respect to the diopter adjustment case 105, the size of the eye cap 104 increases, and the size of the video camera body also increases. There was a problem that.

[0017] In view of the above problems, the present invention can increase the mounting strength between the eye cap and the diopter adjustment case, and
Since the eye cap can be made thin, it can be downsized,
It is another object of the present invention to provide a viewfinder device capable of reducing the size of a video camera body.

[0018]

In order to achieve the above object, a view finder device according to the present invention comprises a sheet metal having a first opening in a main plane, and a sheet metal having a first opening substantially coincident with the first opening of the sheet metal. An elastic member having two openings, and the elastic member and the sheet metal are insert-molded.

Also, a viewfinder body having a liquid crystal display section and an eyepiece, a sheet metal having a first opening in a main plane, and a second metal sheet substantially matching the first opening of the sheet metal.
And a fixing portion for fixing the viewfinder body to the sheet metal, and insert-molding the elastic member and the sheet metal.

According to the above configuration, the mounting strength between the eye cap and the diopter adjustment case can be increased, and the eye cap can be made thinner so that the size can be reduced. A device is obtained.

[0021]

DESCRIPTION OF THE PREFERRED EMBODIMENTS According to the first aspect of the present invention, a sheet metal having a first opening in a main plane and a second opening substantially matching the first opening of the sheet metal are provided. An elastic member having the above configuration, wherein the elastic member and the sheet metal are insert-molded, and the above configuration has an effect of increasing the mounting strength between the eye cap and the diopter adjustment case.

The invention according to claims 2 and 3 of the present invention
A viewfinder body having a liquid crystal display unit and an eyepiece, a sheet metal having a first opening in a main plane, an elastic member having a second opening substantially coinciding with the first opening of the sheet metal, A fixing portion for fixing the viewfinder body is provided on the sheet metal, and the elastic member and the sheet metal are insert-molded. With the above-described configuration, the eye cap can be made thinner, so that the size can be reduced, and This has the effect that the size of the video camera body can be reduced.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. (Embodiment 1) FIG. 1 is a perspective view showing a configuration of a video camera using a viewfinder device of the present embodiment.
5A shows a state where the viewfinder is stored, FIG. 5B shows a state where the viewfinder is pulled out, and FIG. 5C shows a state where the viewfinder is rotated.
FIG. 2 is a cross-sectional view of an essential part schematically showing an internal configuration of the viewfinder device according to the present embodiment, FIG. 3 is a perspective view showing a configuration of an eye cap in the viewfinder device of the present embodiment, and FIG. AA sectional view in 3;
FIG. 5 is a perspective view showing a configuration in which the eye cap of the present embodiment is mounted on a slide case, FIG. 6 is a perspective view showing a configuration of a sheet metal in the present embodiment, and FIG. 7 is a diagram in which the eye cap and the slide case are mounted. It is sectional drawing which shows a state.

In FIG. 1, reference numeral 1 denotes a video camera, 2 denotes a camera unit into which a subject image is incident, and 3 denotes an image of the subject being photographed by the camera unit 2 and an image when a magnetic tape (not shown) is reproduced. A viewfinder equipped with a possible liquid crystal display unit and an eyepiece so that the display image of the liquid crystal display unit can be viewed in an enlarged manner, as shown in FIG. Can be pulled out in the direction of arrow D, and can be stored in the direction of arrow G after use.
Further, as shown in FIG. 3 (c), it is rotatable in directions indicated by arrows H and I. Further, the user uses the camera by looking in the direction of arrow A. The viewfinder 3 is provided rotatably with respect to the video camera body 1 as shown by an arrow D. Reference numeral 4 denotes an eye cap attached to the tip of the viewfinder 3, which is made of an elastic material to protect the eyeball and the periocular skin when a user looks into the viewfinder 3, and the material of the elastic material is, for example, silicon rubber. Consists of

In FIG. 2, reference numeral 15 denotes a main part of the eye cap 4, which is an elastic member made of an elastic material such as silicone rubber or a compound, which protects the eyeball and the periocular skin when the user looks in the direction of arrow A. It is. Reference numeral 5 denotes a thin sheet metal that is insert-molded together with the elastic member 15.
The insert molding of the sheet metal 5 and the elastic member 15 is performed by, for example,
After placing the processed sheet metal in a mold having the external shape of the eye cap 4 shown in FIG. 1, a viscous elastic material is poured into the mold held in a high temperature state by a piston or the like, and the elastic material is pressurized. It is obtained by holding for a certain time. 5
Reference numeral a denotes a fixing portion which is a first engaging means provided on a part of the sheet metal 5 and is bent in one direction to have a claw shape. Reference numeral 6 denotes a first slide case to which the eye cap 4 composed of the metal plate 5 and the elastic member 15 is fixed, and 7 denotes a second slide case slidable in the first slide case 6. Some have been fixed. Reference numeral 8 denotes a case which is an outer shell of the viewfinder 3, 9 denotes an eyepiece for enlarging an image displayed on the liquid crystal display unit 13, 10 denotes a lens which holds the eyepiece 9 and can slide on the guide pole 11 in the direction of arrow J or K. Lens holder, 11 is lens holder 1
Reference numeral 0 denotes a sliding guide pole, 13 denotes a liquid crystal display on which an image being photographed or an image being reproduced on a magnetic tape is projected, 12 denotes a protective film for protecting the surface of the liquid crystal display 13, and 14 denotes a liquid crystal display 13. And a protective film 12 and an LCD holder mounted on the guide pole 11.

3 and 4, reference numeral 16 denotes an opening provided substantially in the center of the eye cap 4, a first opening provided in the sheet metal 5, and a second opening formed in the elastic member 15 by insert molding. The opening is made to coincide with the opening. 1
Reference numeral 7 denotes a hole provided below the eye cap 4 and through which a screw is inserted when the eye cap 4 is fixed to the viewfinder.

In FIG. 5, reference numeral 19 denotes an engagement hole which is a first engaged portion provided on the upper surface of the first slide case 6 and in which the fixing portion 5a is engaged from the inside of the first slide case 6. Reference numeral 18 denotes a screw for fixing the first slide case 6 and the eye cap 4, and reference numeral 20 denotes a screw hole provided on the lower surface of the first slide case 6 and serving as second engagement means to which the screw 18 is screwed. The screw hole 20 has a hole shape but is referred to as an engagement means. Reference numeral 23 denotes a second opening formed at the time of insert molding with the sheet metal 5, which substantially matches the position and size of the first opening 21 provided in the sheet metal 5.

In FIG. 6, reference numeral 21 denotes a first opening provided substantially at the center of the main surface of the sheet metal 5, and a first opening 21 is provided between the sheet metal 5 and the elastic member 15.
When insert molding is performed, the position and the size of the second opening formed in the elastic member 15 are substantially the same as those of the second opening.

In FIG. 7, F is the overall width of the eye cap 4, G and I are the widths of the edges of the elastic member 15, H is the opening width of the elastic member 15, and the edge widths G and I and the opening width. The total dimension with H is the dimension of the entire width F. J is the elastic member 15
The effective opening width of the opening 16 is an area in which the user can see inside the viewfinder, and is also the opening width of the second opening 23.

The operation of the viewfinder device of the present embodiment configured as described above will be described below.

The video camera converts an optical signal of a subject incident from the camera unit 2 into an electric signal in the video camera main body 1 and displays the electric signal on a liquid crystal display unit provided in the viewfinder 3 or a loaded magnetic tape. Or recorded in When confirming the image being photographed or the image reproduced from the magnetic tape, the state shown in FIG.
Then, the viewfinder 3 is pulled out in the direction of arrow D as shown in FIG. 4 and then rotated in the direction of arrow H as shown in FIG. Then, the user can check the image displayed on the liquid crystal display unit in the viewfinder 3 by looking in the direction of arrow A and visually observing the image. Here, an eye cap 4 made of an elastic material is provided at the tip of the viewfinder 3.
Is attached to protect the user's eyeballs and periocular skin.

FIG. 2 is a sectional view of a main part of the viewfinder 3 and the eye cap 4 shown in FIG. Note that FIG.
FIG. 5B shows a state in which the viewfinder 3 is pulled out in the direction of arrow D as shown in FIG. In this state, the second slide case 7 is drawn out of the first slide case 6, and a predetermined distance is provided between the liquid crystal display unit 13 fixed to the second slide case 7 and the eyepiece 9. When the image is viewed from the arrow A side, the image displayed on the liquid crystal display unit 13 appears enlarged by the eyepiece 9. The eyepiece 9 can be slid in the direction of the arrow J or K on the guide pole 11 together with the lens holder 10 by a moving means (not shown) so that the eyepiece 9 can be adjusted in accordance with the user's eyesight.

Also, from the state shown in FIG.
When the viewfinder 3 is stored in the state shown in FIG. 2A, the second slide case 7 shown in FIG.

Next, the configuration of the eye cap 4 will be described in detail. The eye cap of the present embodiment is obtained by completing the sheet metal 5 and the elastic member 15 shown in FIG. 6 by insert molding. FIG. 3 is a perspective view showing the external configuration of the eye cap.
It is exposed to the outside without being covered by. In addition, eye cap 4
An opening 16 is provided at substantially the center of the lens, and two holes are provided at the lower portion through which screws are inserted for fixing to the viewfinder. In addition, as shown in FIG.
A first opening 21 is formed in the center thereof, and a second opening 23 formed in the elastic member 15 during insert molding.
Approximately matches the position. In the sheet metal 5, two holes 22 are provided at ends facing the fixing portion 5a, and screws are inserted when the eye cap 4 and the viewfinder 3 are fixed.

Next, the connection between the eye cap 4 and the viewfinder 3 will be described in detail. As shown in FIG. 5, first, the fixing portion 5 a on the eye cap 4 side is engaged with the engagement hole 19 from inside the first slide case 6. Next, the eye cap 4 is brought into contact with the end of the first slide case 6, and the position of the hole 17 and the position of the screw hole 20 are adjusted.
Then, the screw 18 is inserted through the hole 17 and screwed into the screw hole 20 to obtain a state as shown in FIGS. 7 and 2.

According to the present embodiment as described above, FIG.
Since the connection between the eye cap 4 and the slide case 6 is performed by engaging the fixing portion 5a into the engagement hole 19 and fastening by the screw 18, the widths G and I of the edge of the elastic member 15 are set inside. Since the sheet metal 5 and the elastic member 15 are insert-molded, there is no problem in strength. Further, the opening width H of the elastic member 15 can be reduced to substantially the same as the effective opening width J. Also, since the sheet metal 5 and the elastic member 15 are insert-molded, there is no problem in strength. Therefore, since the widths G and I of the edge of the elastic member 15 can be reduced and the opening width H can be reduced, the overall width F of the eye cap 4 can be reduced while securing the mounting strength. It is possible.

In the present embodiment, the eye cap 4 and the viewfinder 3 are fixed with the screw 18, but the fixing means is not limited to a screw as long as it is a fixing means capable of firmly fixing each.

In the present embodiment, the connection between the eye cap 4 and the viewfinder 3 is performed by the fixing portion 5a and the screw 18, but the fixing portion may be provided in two places. FIG. 10 is a cross-sectional view showing a configuration of an eye cap in which two fixing portions are provided on the metal plate 5, and FIG. 9 is a perspective view showing a configuration of the metal plate in the embodiment. In the drawing, reference numeral 5b denotes a first fixing portion, which is a first engagement means provided near an end of the main plane of the sheet metal 5, and 5b denotes a second engagement provided near the other end of the sheet metal. This is a second fixing portion which is a means. As described above, even in a configuration in which the eye cap 4 and the viewfinder 3 are engaged only by the engagement means without using the screw,
It is possible to reduce the overall width of the eye cap 4 while securing the mounting strength.

[0039]

As described above, according to the present invention, the mounting strength between the eye cap and the diopter adjustment case can be increased, and the eye cap can be made thinner so that the size can be reduced. Thus, an excellent effect that the size can be reduced can be obtained.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a configuration of a video camera using a viewfinder device according to an embodiment of the present invention.

FIG. 2 is a sectional view of a main part near a viewfinder and an eye cap according to the embodiment;

FIG. 3 is a perspective view showing a configuration of an eye cap according to the embodiment.

FIG. 4 is a sectional view taken along line AA in FIG. 3, showing a configuration of the eye cap according to the embodiment.

FIG. 5 is an exemplary perspective view showing a connection relationship between the eye cap and the first slide case according to the embodiment;

FIG. 6 is a perspective view showing a configuration of a sheet metal according to the embodiment.

FIG. 7 is an essential part cross-sectional view showing a state where the eye cap and the first slide case in the embodiment are coupled to each other;

FIG. 8 is a sectional view showing another configuration example of the eye cap according to the embodiment.

FIG. 9 is a perspective view showing another configuration example of the sheet metal in the embodiment.

FIG. 10 is a perspective view showing a configuration of a video camera using a conventional viewfinder device.

FIG. 11 is an exploded perspective view of a conventional viewfinder device.

FIG. 12 is an exploded sectional view of an eye cap and a diopter adjustment case in the device.

FIG. 13 is a cross-sectional view of a main part showing a state where the eye cap and the diopter adjustment case are fitted in the same device.

FIG. 14 is a sectional view of a main part of an eye cap in the apparatus.

[Explanation of symbols]

 Reference Signs List 3 viewfinder 4 eye cap 5 sheet metal 5a fixing part 5b first fixing part 5c second fixing part 6 first slide case 7 eyepiece 13 liquid crystal display part 15 elastic member 16 opening 18 screw 19 engaging hole 20 screw Hole 22 First opening 23 Second opening

Claims (3)

[Claims] A sheet metal having a first opening in a main plane;
A viewfinder device comprising: an elastic member having a second opening substantially coinciding with the first opening of the sheet metal, wherein the elastic member and the sheet metal are insert-molded. 2. A viewfinder body having a liquid crystal display section and an eyepiece, a sheet metal having a first opening in a main plane, and a second opening substantially matching the first opening of the sheet metal. A viewfinder device, comprising: an elastic member having a fixing portion for fixing the viewfinder body to the sheet metal; and insert-molding the elastic member and the sheet metal. 3. A viewfinder body having a first engaged portion disposed on one side surface and a second engaged portion disposed on the other side surface, and extends from near an end of a main plane. First and second engaging portions respectively engaged with the first and second engaged portions.
3. The viewfinder device according to claim 2, further comprising: a sheet metal having the engaging means.