JPH049041B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a camera case, and more particularly to a case manufactured by welding a plurality of artificial leather sheets.

Leather cases for single-lens reflex cameras, etc.
It is made by sewing multiple sheets of natural or artificial leather. From an aesthetic point of view, it is necessary to sew beading material together at the seam of two leather sheets to form a bevel, and to give the leather sheet near the seam a plump curved surface. In order to create this curved surface, the inside of the case, that is, the back side of the leather, was pressed with a trowel or the like.

As described above, conventional camera cases and the like have had the disadvantage that a special bead material is required to form the bead, and that sewing and ironing require time and skill.

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a camera case that does not require sewing or a special beading material, and can be formed in the vicinity of the welded portion to be thick without any particular ironing.

The present invention will be explained below with reference to drawings showing examples.

FIG. 1 is a perspective view of the crown of a case for a single-lens reflex camera according to an embodiment, and FIG. 2 is an exploded view of the camera case crown disassembled into its constituent artificial leather sheets.

The lens sheet 1 covers the front end surface of the photographic lens and the left and right side surfaces of the photographic lens.

Its developed shape is approximately rectangular as shown in FIG.

The upper sheet 2 covers the upper surface of the camera and the upper side surface of the photographic lens.

The edge portion 2A is a bead edge 2a, as will be explained in detail later.
(FIG. 1), it is folded back to the back side and welded to the upper edge 1A of the lens sheet 1.

The bottom sheet 3 covers the bottom surface of the camera, the lower back surface of the camera, and the lower side surface of the photographic lens.

The edge portion 3A is folded back to the back side so as to form a beaded edge in exactly the same way as the edge portion 2A, and is welded to the lower edge portion 1B of the lens sheet 1.

The back sheet 4 covers the upper part of the back of the camera including the camera eyepiece.

The edge portion 4A is welded to the edge portion 2B of the upper sheet 2.

Next, the method of welding the lens sheet 1 and the upper sheet 2 will be explained in detail.

Figure 3 is a perspective view. FIG. 4 is a sectional view.

A lining material 5 made of fiber or other material is adhered to the back surface of the lens sheet 1. Similar lining materials are bonded to other sheets.

As shown in FIG. 3, the lens sheet 1 is bent into a "U" shape at two places in the center so that it can cover the photographic lens. In particular, as shown in FIG. 4, the upper edge portion 1A has a bent portion 1a bent toward the back side with respect to the center portion 1C of the lens sheet 1, and this bent portion 1a.
It has an upright portion 1b that extends from the center portion 1C so as to be substantially parallel to the center portion 1C. The lining material 5 covers the tip of the raised portion 1b and reaches the surface of the lens sheet 1. The high frequency electrode 6 has a shape corresponding to the shape of the upper edge portion 1A.

The end edge portion 2A is folded back to the back side so that its tip forms a beaded edge 2a. The backing material 7 of the upper sheet 2 is designed so as not to line the folded portion 2b of the edge portion 2A. The upper sheet 2 is placed on the lens sheet 1 so that the folded portion 2b is in contact with the bent portion 1a. The high-frequency electrode 8 having a sharp tip applies high-frequency voltage and current while sandwiching and pressing the bent portion 1a and the folded portion 2b together with the electrode 6. As a result, the folded parts 2b are welded together and the folded parts 2b are welded together.
b and the bent portion 1a are welded together. At this time, as described above, since the backing material 7 is not present in the folded portion 2b, the above-mentioned welding can be achieved extremely firmly.

The high frequency electrodes 6 and 8 extend along the U-shape of the upper edge portion 1A, and due to the pressure of the electrodes 6 and 8, the upper edge portion 1A and the edge portion 2A
The whole can be welded at the same time. This simultaneous welding can be achieved after the bead is formed on the edge 2A of the top sheet 2. Specifically, the electrode needs to be pressed almost perpendicularly to the welding location of the sheet. When a bead is formed on the edge portion 2A, as shown in FIG. 3, the pressing direction of the electrode 8 is the same direction as shown by arrow A along the entire length of the folded portion 2b. Therefore, the entirety of the upper edge 1A and the edge 2A can be simultaneously welded by the electrode 8 having a shape corresponding to the U-shape of the upper edge 1A. However, if a bead is formed on the upper edge 1A, the upper edge 1A
Since the perpendicular directions are different as shown by arrows B, C, and D, it is difficult or impossible to press simultaneously with a single electrode.

Also, from the edge portion 2A to the center portion 2 of the upper sheet 2
The part following C comes into contact with the rising part 1b, and the part following the rising part 1
Since it is supported by b, the end edge portion 2A has a swollen shape. When this case crown is viewed from inside, the raised part 1b covers the folded part 2b, the lining material 5 of the lens sheet 1 covers the raised part 1b including its tip surface, and the upper sheet 2 Since the lining material 7 covers the upper sheet 2 at least up to the contact area between the tip of the upright portion 1b and the edge portion 2A, the artificial leather itself is not exposed inside the camera case crown. Aesthetically pleasing.

The same applies to welding of the lower edge part 1B and the edge part 3A, in which bent parts and raised parts such as 1a and 1b are formed on 1B, and beaded edges and folded parts such as 2a and 2b are formed on 3A. , welding is performed using a pair of high-frequency electrodes.

In this example, the artificial leather sheets were bonded to each other by welding by applying high frequency, but the present invention is not limited to this, and any method other than sewing, such as adhesive, may be used. Furthermore, in this specification, eliminating the need for sewing does not mean that the case according to the present invention does not require any sewing at all, but does not mean that sewing is not required for joining the sheets in areas where welding is required. means.

As described above, according to the present invention, the backing material of the second artificial leather sheet is removed to form a folded part, and this and the surface of the first artificial leather sheet are sandwiched between two electrodes to apply a current. Since it is welded by flowing, the second
The two overlapping artificial leather sheets and the first artificial leather sheet can be successfully welded together. In addition, since the first artificial leather sheet is provided with a folded part and the folded part of the second artificial leather sheet is placed on this folded part, the second comparative sheets overlap each other during welding. The two sheets and the first leather sheet can be welded by sandwiching them between the electrodes 8 and 6, and the welding process is simple because the process of welding the three sheets is done only once. Furthermore, in the present invention, a continuous rising part is provided at the tip of the folded part, and the part of the second artificial leather sheet from the folded part to the center is brought into contact with this part, so that the natural part of the center part The bulge can be formed with a simple configuration.

[Brief explanation of drawings]

Fig. 1 is a perspective view of the crown of a single-lens reflex camera case according to an embodiment of the present invention, Fig. 2 is an exploded view of the camera case crown disassembled into the artificial leather sheets that constitute it, and Fig. 3. 4 is a perspective view for explaining how to bond the camera case crown, and FIG. 4 is a sectional view. (Explanation of symbols of main parts), 1...Lens sheet, 2...Top sheet, 3...Bottom sheet, 1
A... Upper edge portion, 1C... Center portion, 1B... Lower edge portion, 1a... Bent portion, 1b... Standing portion, 2
a... Bead edge, 2b... Folded portion, 6, 8... High frequency electrode.

Claims (1)

[Scope of Claims] 1. A camera case formed by welding a plurality of artificial leather sheets, comprising: a first artificial leather sheet for covering the tip and both side surfaces of the photographic lens; and at least the top or bottom surface of the photographic lens. The second artificial leather sheet for covering has a backing material on the back side of each, and the second artificial leather sheet
The edge portion 1A of the artificial leather sheet is a bent portion 1a that is bent toward the back side with respect to the center portion 1C of the sheet.
and a rising part 1b that rises continuously from this bent part, and has an edge part 2A of the second artificial leather sheet.
has a folded part 2b with the backing material removed and folded back to the back side to form a bead 2a, and the back sides of the folded part 2b from which the backing material has been removed are welded to each other, and The surfaces of the folded portion 1a on which the folded portion 2b is placed and the surfaces of the folded portion 2b are welded to each other, and the area continuing from the edge portion 2A of the second artificial leather sheet to its center portion 2C is A camera case, characterized in that the camera case is in contact with an upright portion 1b of a first artificial leather sheet.