JP3006017U - Waterproof structure of camera - Google Patents

Abstract

(57) [Abstract] [Purpose] The camera's drip-proof, which can maintain the drip-proof and waterproof property over the entire circumference of the lid and opening, and has little deterioration over time,
Providing a waterproof structure. A waterproof and waterproof structure for a camera in which a waterproof seal is provided between the back lid 31 and a sealed surface 12 of the camera body by an annular waterproof sealing member 51 attached to the back lid 31. When the sealing member 51 is closed, the inclined sealing surface 52 that contacts the sealed surface 12 in a watertight manner due to the elastic deformation of the annular prevention sealing member 51 itself, and the inclined sealing surface 52 that contacts the lid 31 and seals the inclined sealing surface 52. The bulging portion 53 that urges toward the surface 12 is formed in the annular waterproof seal member 51.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a drip-proof waterproof structure of a camera, and more specifically to a drip-proof waterproof structure of an opening / closing part such as a back cover of a camera.

[0002]

[Prior art and its problems]

 In recent years, drip-proof waterproof cameras are used as a waterproof body that provides a waterproof seal between the back cover and the camera body when the back cover is closed. A seal member such as packing is used. This packing is made of elastic material, and when the back cover is closed and locked, the elastic restoring force that separates the back cover from the opening edge causes water-tight contact with the opening edge and the back cover. are doing.

However, the elastic restoring force of the packing is considerably large in the entire circumference even if the packing has a weak unit length. As a result, the elastic back of the packing causes the back cover to warp, or the packing itself to become wavy, and the contact force between the packing and the opening edge becomes weak at the part where the back cover is warped or at the wavy part. There is a risk that the waterproofness will deteriorate. For example, in the case where one short side of the back lid is pivotally attached to the camera body with a hinge and a lock member is provided on the other short side, the warpage of the back lid occurs at the center of the long side of the back lid. It was remarkable.

[0004]

[The purpose of the device]

 The present invention has been made in view of the above-mentioned conventional problems, and is capable of maintaining drip-proof and waterproof properties over the lid and the entire circumference of the opening, and is a drip-proof and waterproof camera with little deterioration over time. It is intended to provide a structure.

[0005]

[Outline of the device]

 The present invention that achieves this object is provided with an endless elastic seal member attached to an opening edge portion that forms an opening portion of a camera body or a lid body that closes the opening portion, and the lid body is closed. The elastic seal member has a waterproof structure in which the elastic seal member comes into water-tight contact with the opening edge portion or the sealed surface of the lid to seal between the lid and the opening. When the sealing member is closed, the tongue piece that comes into water-tight contact with the surface to be sealed due to the elastic deformation of the sealing member itself and one of the members on the side where the elastic sealing member is mounted are also accompanied by the elastic deformation. And a pressing portion for pressing the elastic seal member in the direction of the seal surface.

[0006]

【Example】

 The present invention will be described below with reference to illustrated embodiments. First, an outline of a lens shutter type camera to which the drip-proof and waterproof structure of the present invention is applied will be described with reference to FIG.

The external appearance of the camera 10 is composed of a watertight body shell 11 and a back cover 31 that opens and closes an opening 13 formed on the back surface of the body shell 11. The opening 13 is regulated by the sealed surface 12 formed by a flat continuous surface.

An aperture frame 15 for restricting the photographing aperture 14 is provided in the opening 13 substantially at the center, and a spool chamber 17 and a cartridge chamber 19 are provided on both outer sides of the aperture frame 15. A viewfinder eyepiece 21 is provided above the aperture frame 15. The aperture frame 15, the spool chamber 17, the cartridge chamber 19 and the eyepiece 21 are located inside the sealed surface 12.

A back cover 31 is pivotally supported on one side of the rear part of the body shell 11 so as to be rotatable via a hinge 23 attached to the outside of the sealed surface 12 and to be able to open and close the back cover 31. Has been done. The back cover 31 is provided with a pressure plate 41, a finder waterproof window 43 facing the eyepiece 21, and a DX waterproof window 45 facing the patrone (not shown) so that the DX information can be visually recognized. Light-shielding pads 44 and 46 that surround the finder waterproof window 43 and the DX waterproof window 45 are attached to the inner surface of the back cover 31 (the surface on the body shell 11 side). The light-shielding pads 44 and 46 respectively contact the peripheral surface 22 of the eyepiece and the surface of the cartridge when the case back 31 is closed, and shield the space surrounded by the light-shielding pads 44 and 46 from the surroundings.

Further, an annular waterproof seal member 51 is mounted on the inner surface of the back cover 31 as a waterproof seal member that constitutes a waterproof structure which is a feature of the present invention. The annular waterproof seal member 51 surrounds all of the above-mentioned main components such as the pressure plate 41 and the light-shielding pads 44 and 46, and when the back cover 31 is closed, it is in close contact with the sealed surface 12 and the body shell 11 and the back cover 31. Keep the space watertight. The annular waterproof seal member 51 is made of a highly elastic rubber material, synthetic resin material, or the like. Of course, the annular waterproof seal member 51 also has a light shielding property.

Further, in the figure, reference numerals 25 and 47 are lock members for keeping the back lid 31 in a water-tightly closed state. The lock member 47 of the back lid 31 is provided outside the annular waterproof seal member 51, and the lock member 25 is provided outside the sealed surface 12. When the back cover 31 is closed and the annular waterproof seal member 51 is elastically deformed and elastically contacts the sealed surface 12, the locking members 47 and 25 are engaged with each other to lock the back cover 31 so that it cannot be opened and closed. . Although not shown, the lock is released by operating a slide member which is exposed on the surface of the back cover 31 and slides the lock member 47.

Hereinafter, this characteristic part will be described in detail. 1 and 2 are cross-sectional views showing the main part of a first embodiment of the present invention. On the inner surface of the back lid 31, double peripheral walls 33 and 34 for keeping the annular waterproof seal member 51 in a watertight state are provided in a protruding manner. A groove 32 into which the annular waterproof seal member 51 is fitted is formed between the peripheral walls 33 and 34. The outer peripheral wall 34 is higher than the inner peripheral wall 33, and the inner side surface of the peripheral wall 34 has an inclined surface 35 that is inclined in a direction in which the tip portion extends outward.

The annular waterproof seal member 51 is fitted in the groove 32 with the bottom portion thereof elastically compressed. In this embodiment, an adhesive is interposed between the annular waterproof seal member 51 and the groove 32 to enhance waterproofness and fall prevention.

Like the inclined surface 35, the inner surface of the annular waterproof seal member 51 constitutes an inclined seal surface 52 whose tip portion inclines toward the outside. A bulging portion 53 is provided on the outer surface of the annular waterproof seal member 51. The inclined sealing surface 52 and the bulging portion 53 are continuous over the entire circumference of the annular waterproof sealing member 51. The bulging portion 53 does not necessarily have to be continuous, and may be formed of a large number of protrusions.

FIG. 2 shows a state in which the annular waterproof seal member 51 is closed. When the back lid 31 is rotated in the closing direction from the open state of FIG. 1, the inclined sealing surface 52 first comes into contact with the sealed surface 12, but since the inclined sealing surface 52 is inclined outward, the annular waterproofing is performed. The seal member 51 is elastically deformed outward, and the inclined seal surface 52 slides on the surface of the sealed surface 12 and moves outward. Further, when the annular waterproof seal member 51 is closed to the lock position, the inclined surface 35 contacts the bulging portion 53 and presses the annular waterproof seal member 51 toward the sealed surface 12. That is, in the annular waterproof seal member 51, the inclined seal surface 52 is pressed against the sealed surface 12 not only by the restoring force due to the elastic deformation of the annular waterproof seal member 51 itself but also by the biasing force of the inclined surface 35. Therefore, the adhesion between the sealed surface 12 and the inclined sealing surface 52 is increased, so that the drip-proof and waterproof property is further improved. However, even if the elastic restoring force of the annular waterproof seal member 51 is weakened due to deterioration over time, the inclined surface 35 urges the bulging portion 53 to be pressed, so that the inclined seal surface 52 and the sealed surface 12 are separated from each other. The watertightness of is sufficiently maintained.

FIG. 3 shows a second embodiment of the present invention. The second embodiment is characterized in that the sealed surface 12 is not a flat surface, but an inclined sealed surface 12a in which the sealed surface 12 is inclined so as to face the outer circumference. According to the inclined sealed surface 12a, the water droplets attached to the inclined sealed surface 12a are pushed out of the body shell 11 along the inclined sealed surface 12a by the inclined sealed surface 12a when the back cover 41 is closed. Be done. Moreover, since the bulging portion 53 is pressed by the inclined surface 35, the adhesion force between the inclined sealing surface 52 and the inclined sealed surface 12a becomes strong, and is less susceptible to deterioration over time.

4 and 5 show a third embodiment of the present invention. In the third embodiment, the annular waterproof seal member 61 is provided with a double inner peripheral tongue portion 63 and outer peripheral tongue portion 64 projecting toward the body shell 11. The annular waterproof seal member 61 has a U-shaped cross section, and the inner peripheral tongue portion 63 has a sealing surface 63a for contacting and sealing the inclined sealed surface 12a. Is also formed high. The annular waterproof seal member 61 is water-tightly fitted and fixed between the protruding walls 33 a and 34 a formed on the back cover 31. On the other hand, the body shell 11 is provided with an inclined sealed surface 12a similar to that of the second embodiment.

In the third embodiment, the inner tongue piece 63 and the outer tongue piece 64 are separated from each other when the back lid 31 is in the open state, but when the back lid 31 is closed, The sealing surface 63a of the circumferential tongue portion 63 abuts on the inclined sealed surface 12a and comes into sliding contact therewith, and the tip portion is elastically deformed outward. When the back cover 31 is closed, the outer peripheral tongue portion 64 contacts the tip of the inner peripheral tongue portion 63, and the inner peripheral tongue portion 63 is biased toward the inclined sealed surface 12a. The outer peripheral tongue portion 64 is in contact with the peripheral wall 34a and its deformation is restricted.

Due to the contact between the inner peripheral tongue portion 63 and the outer peripheral tongue portion 64, the urging force of the outer peripheral tongue portion 64 is added to the elastic restoring force of the inner peripheral tongue portion 63. Since the adhesiveness with the inclined sealed surface 12a becomes stronger, the waterproof property is improved and is less susceptible to deterioration over time. The tongue pieces 63 and 64 do not have to be double, and may be triple or more.

Although the annular waterproof seal members 51 and 61 have been shown as examples of the seal member in the present embodiment, the shape of the seal member is not limited to this. In short, first, there is a member that comes into close contact with the seal surface by the elastic deformation of the seal member itself, and further contacts the elastically deformed seal member to press the seal member in the elastic restoring direction, that is, the seal surface direction. Good. Further, the seal member need not be attached to the back cover but may be attached to the body shell.

[0021]

[Effect of device]

 As is apparent from the above description, the present invention provides a sealing member that seals the camera body and the lid body in a watertight manner, in addition to the elastic deformation of the sealing member itself, by the additional urging force of the lid body or the camera body. Since the seal surface is elastically biased, the deformation of the seal member is suppressed, the waterproof property is improved, and the deterioration over time is reduced.

[Brief description of drawings]

FIG. 1 is an enlarged cross-sectional view showing a main part of a first embodiment of a camera to which a waterproof structure according to the present invention is applied in an open state.

FIG. 2 is an enlarged cross-sectional view of the same embodiment in a closed state.

FIG. 3 is a cross-sectional view showing an enlarged main part of a second embodiment of the present invention in a closed state.

FIG. 4 is an enlarged sectional view showing an essential part of a third embodiment of the present invention in an open state.

FIG. 5 is a cross-sectional view showing an enlarged main part of the third embodiment in a closed state.

FIG. 6 is a perspective view of a camera to which the waterproof structure of the present invention is applied, viewed from the rear side with the back cover opened.

[Explanation of symbols]

 11 Body Shell 12 Sealed Surface 12a Inclined Sealed Surface 13 Opening 31 Back Lid 32 Annular Groove 33 Inner Wall 33a Inner Wall 34 Outer Wall 34a Outer Wall 35 Inclined Surface 51 Annular Waterproof Seal Member 52 Inclined Seal Surface 53 Swelling Part 61 Annular waterproof seal member 63 Inner peripheral tongue portion 64 Outer peripheral tongue portion

Claims (5)

[Scope of utility model registration request] 1. An endless elastic seal member mounted on an opening edge portion forming an opening portion of a camera body or a lid body closing the opening portion, wherein the elastic body is elastic when the lid body is closed. A waterproof structure in which a sealing member makes a watertight contact with the opening edge portion or a sealed surface of the lid to seal between the lid and the opening, and the elastic sealing member seals when closed. The elastic seal member is sealed by the tongue portion that comes into water-tight contact with the surface to be sealed by the elastic deformation of the member itself and a part of the member on the side where the elastic seal member is attached due to the elastic deformation. A drip-proof waterproof structure for the camera, characterized in that a pressing portion for pressing in the direction is provided. 2. The pressing portion according to claim 1, wherein the pressing portion includes a bulging portion integrally formed with the tongue portion and a contact portion formed on a mounting side member that abuts the bulging portion. The camera's drip-proof and waterproof structure. 3. The tongue piece according to claim 1, wherein the tongue piece is double formed of an inner side portion and an outer side portion, and when the inner side portion contacts the sealed surface and the lid is closed. A drip-proof waterproof structure for a camera, characterized in that the inner part and the outer part are in contact with each other and the inner part is elastically biased toward the sealed surface. 4. The sealed surface according to claim 1, wherein a surface of the tongue piece contacting the sealed surface faces the outside of the opening when the lid is closed. The camera has a drip-proof and waterproof structure that is slanted so that it can be brought into sliding contact with. 5. The drip-proof waterproof structure for a camera according to claim 1, wherein the sealed surface is inclined in a direction facing the outside of the opening.