JPH056169B2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field]

This invention relates to a focusing lid for a camera that includes a cover that folds over the camera body and a back piece and side pieces attached thereto. Each side piece is divided into front and rear side piece portions that are hinged to each other.

[Prior art and problems to be solved by the invention]

The focus hood is located close to the back piece of the focus hood to secure it in the folded position so that it does not swing freely around the bottom edge of the cover that is hinged to the camera box, and to guide the opening and closing movement of the focus hood. It is known to provide a hinged guide plate at the location of the outer camera box and at half the height of the back piece. This means that during opening and closing operations, the lower end of the back piece follows a downwardly directed arc in movement. In addition to the normal overall height of the closed focusing hood, free space is required for the lower rear edge of the hood when folded. This in turn requires that the frame overlying the camera box, which supports the focusing hood and hides portions of the hood in the folded state, must have a height that exceeds the height determined solely by said total height. do. The present invention has been made in view of the above points,
It is an object of the present invention to provide a camera focus hood that prevents any part of the focus hood from moving beneath the lower boundary surface of the hood during folding.

[Means to solve the problem]

To achieve the above object, a camera focal point hood according to the present invention comprises a cover hinged to the camera box for folding, and a camera focal point hood that includes a back piece and a side piece attached to the cover. It is a hood,
In the focusing hood of the camera, each side piece is divided into a front side piece portion and a rear side piece portion, and the back piece is connected to the box by a box and a link hinged to the back piece. , the first link is hinged to the box.
and a second section hinged to the backpiece, the second section being mounted at a vertical level below the center of the backpiece in the open focal hood, and generally at the first section. mounted at half-height level of said backpiece, the first portion of the link extending adjacent and parallel to the backpiece in the open focal hood;
The second part has a free end part on the outside of the attachment part of the first part, and the tip of the free end part forms a support part, and the support part abuts against the back piece when opening and closing the focusing lid. It is characterized by: With the above arrangement, the invention makes it possible in a focus hood of the above type to maintain a frame height that depends only on the total height of the parts of the focus hood. Furthermore, according to the invention, it is possible in a convenient manner to provide in the cover an exchangeable magnifying glass which can be opened in the focusing hood if necessary.

【Example】

Next, embodiments of the present invention will be described with reference to the drawings. Referring to FIG. 1, the focus hood and its parts are illustrated by reference numeral 1, a mounting frame which is attached to the camera box in the conventional manner and surrounds the focus screen (box and screen not shown). The cover is marked 2 and the back piece is marked 3. A side piece is hinged between the cover 2 and the back piece 3, each side piece being indirectly divided in the center into side piece parts 4 and 5. The design and the pivoting of the cover to the mounting frame are of the conventional design of focus hoods, which is otherwise clear from the drawings. Reference numeral 7 denotes a torsion spring, which acts to open the side pieces with respect to the back piece. To facilitate understanding of the present invention, known technology will be described with respect to FIG. 3b. At half the height of the backpiece 3, a guide plate 88 is hinged at 111, the other end of the guide plate being pivoted to the frame 1 at 9. The pivot axis 9 is located just outside the plane of the backpiece, as seen in the folded focus hood, and the guide plate 8
8 has a length approximately equal to half the height of the back piece. The position of the pivot axis 9 and the position of the pivot axis 111 and thus the length of the guide plate 88 are such that the guide plate is hidden by the cover 2 in the folded position of the focusing lid and that it is in the two outer positions.
That is, it is determined by the fact that in the folded state the parts have a particular orientation in the substantially vertically folded focal hood which is substantially horizontal. This geometrically defined relationship is evident from Figure 3b, which is shown in the "intermediate position", so that in the folded or stacked condition the lower end of the back piece 3 extends a distance a below the underside of the frame. It is meant to move along a downwardly directed arc, in which case it is drawn and directed towards the focal point according to the invention. According to the invention, as is clear from FIGS. 2, 3a and 4, the guide plate is located at the first link portion 8.
and a second link portion 10. The link part 8 is hingedly attached at 9 and the pivot axis is in the folded focus hood.
Located just outside the surface of back piece 3. See, for example, FIG. The free end of the link part 8 is divided into two support surfaces 8'. At a distance below half the height of the back piece 3, a second link part 10 is hinged at 11. At the other end, link section 10 is hinged to link section 8 about a pivot axis 12. Said pivot axis 12 is located between the joint 9 and the free end of the link part 8, at the same level as the half height of the back piece 3, as seen in the folded focus hood. For example, as shown in FIGS. 2, 3a and 4, in the folding procedure, the link 8 pivots to the left and the cover 2 simultaneously pivots to the right, as seen in those figures. Rotate. Therefore, the back piece 3 is moved to the cover in a parallel movement,
The side pieces 4, 5 are folded together as seen in FIG. During this folding movement, the support surface 8' slides along the backpiece 3 and moves it to the left (according to the figure). A link part 10, which is hingedly connected to the back piece 3 and to the link part 8, lifts the back piece and with it the focal foot in each position with respect to the back piece distance from the cover and in the angular position of the link part 8 and substantially vertically Guide its movement along a straight path. From a direct comparison with FIG. 3b, it can be seen that with the invention the height of the frame 1 can be made considerably lower with respect to what is possible with conventional focusing hoods of this type. A characteristic feature of the invention is that it allows the magnifying glass to be incorporated into the cover of the focusing hood in a convenient manner, as shown in FIGS. 5-7. A mounting plate 13 is installed inside the cover of the side piece. This plate is hinged to a pair of flanges 14 installed on the cover. A torsion spring 15 of conventional type is attached to the mounting plate 13 in a position substantially perpendicular to the cover 2 and mounted on the axis of the plate.
There is a tendency to oscillate. The plate 13 is provided with a pin 16 having a conical head 17 on the outside and, at opposite edges, a pair of guides 18 in the form of bent sheet metal material. Reference numeral 19 designates a holder with a magnifying glass, which holder has a notch 20 and is moved between the guides 18 for frictional engagement. The cover 2 is furthermore provided with a control button 21, which is not shown but is guided in the cover in a manner suitable to the skilled person and is stopped by a spring (not shown), and is connected to a seventh
Pushed to the right in the figure. The control button includes a part 22 on the shoulder, which part is such that when the mounting plate 13 with the magnifying glass 19 is pivoted onto the cover 2, it catches by a snap action the rear part of the edge or back of the head 17. Hold the magnifying glass in the folded position. By moving the control button 21 to the left (FIG. 7), the shouldered part 22 is released from the edge of the head 17, so that the mounting plate 13 with the magnifying glass 19 is brought into focus by the spring 15. Rotated into horizontal position within the hood. As can be seen, it is very easy to replace the holder with the magnifying glass if desired, for example due to lack of vision of the user.

[Brief explanation of the drawing]

1 is a partially cut away perspective view of a focusing hood according to the invention; FIG. 2 is a schematic side view of the hood; FIG. 3a is a view of the hood according to the invention when folded; FIG. 3a shows the hood of the known type in a position corresponding to that of the hood in FIG. 3a; FIG. 4 shows the hood of the invention in the folded position; and FIG. FIG. 6 is an enlarged view showing details;
FIG. 7 is a diagram showing the parts of the cover and the magnifying glass. In the diagram, 2...cover, 3...back piece, 4
...Front side piece part, 5... Rear side piece part, 8... First part of link, 8... Support part, 10... Second part of link, 11, 12...
...Mounting part, 13...Mounting plate, 18...Guide, 1
9... A holder with a magnifying glass, 21... A control button, 22... A part with a shoulder.

Claims (1)

[Scope of Claims] 1. A camera focal point hood comprising a cover 2 hinged to the camera box so as to be foldable, a back piece 3 attached to the cover, and a side piece, each with a lateral side piece. A camera focusing hood in which the side piece is divided into a front side piece part 4 and a rear side piece part 5, and said pack piece 3 is connected to the box by a link hinged to the box and back piece. in which said link comprises a first part 8 hinged to said box and a second part 10 hinged to said backpiece 3, said second part 10 being mounted at a vertical level below the center of said back piece 3 and at a level approximately half the height of said back piece in a first part 8, said first part 8 of said link being open; The focused focus hood extends adjacent and parallel to the back piece 3 and has a free end portion outside the attachment portion 12 of the first portion 8 in the second portion 10; The tip forms a support part 8',
A focusing lid for a camera, characterized in that the supporting portion 8' abuts against the back piece 3 when opening and closing the focusing lid. 2. The focusing hood according to claim 1, characterized in that the mounting portion 11 of the second portion 10 of the back piece 3 is installed at a position approximately one-fourth of the height of the back piece. The focus of the camera. 3. A focusing hood according to claim 1 or 2, further comprising a mounting plate 13, which is mounted on the cover 2 and hinged at its free end. installed,
and comprising means 16, 17 for engaging snap engagement means 21, 22 releasably disposed within said cover for locking said mounting plate 13 in a folded position within said cover. The feature is the camera's focal point. 4. In the focusing hood according to claim 3, the mounting plate includes a holder 1 with a magnifying glass.
9. A camera focusing hood characterized in that it is provided with a guide 18 extending transversely to its pivot axis for releasably mounting the holder 9. 5. A focusing hood according to one of claims 3 or 4, wherein the snap-engaging device comprises a control button 21, said control button being movable along the free end. A focusing hood for a camera, and characterized in that the mounting plate includes a portion 22 with a shoulder adapted for snapping action to engage said devices 16, 17.