JPH0728153A - Anti-shock photographing device - Google Patents

Abstract

PURPOSE:To provide an anti-shock photographing device with which impact does not influence the inner structural member without requiring large-size construction of the device by furnishing the first resilient member around a locational member between the inner structural member and the exterior components enclosing them. CONSTITUTION:When assembled completely, an anti-shock photographing device concerned is in a waterproof structure besides holes in the upper and lower exterior component parts 1a, 1b where screws 4 pass, and an inner structural member 2 is supported afloat by resilient members 3a-3d in a box formed from these exterior components 1a, 1b. Screws 4 are engaged by screw holes 2a provided in the inner structural member 2, and a specified space is produced between the flanges of the screws 4 and the inner structural member 2. An impact applied to the exterior component 1a in parallel with the screw inserting direction is borne by the resilient members 3a-3d, while impact in other directions causes deformation of the exterior component 1a or generates friction with the exterior component 1b, and the residual force is transmitted to the resilient members 3a-3d. It is preferred that the second resilient member is installed in the screw holes in the exterior components 1, 1b where the screws pass.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a shock-resistant photographing device having a structure divided into an inside and an outside.

[0002]

2. Description of the Related Art Conventionally, in order to protect the internal structure against external force applied to a photographing device, the thickness of the exterior parts is increased, rubber or the like is attached to the surfaces of the exterior parts, or projections are provided, or In addition to taking measures such as strengthening the material, a separate cover for covering the entire image capturing device was provided in addition to the image capturing device itself as currently seen in VTR cameras.

[0003]

By the way, in the above-mentioned conventional example, damage to the exterior parts can be prevented simply by increasing the thickness of the exterior parts or by strengthening the material of the exterior parts.
There is no difference in that the impact force from the outside of the imaging device is directly propagated to the internal structural parts through the exterior parts.For example, the autofocus element etc. that is finely adjusted and fixed when the imaging device is assembled may move. Then, the distance measuring performance was adversely affected.

Further, it is not preferable to attach an elastic member or to provide a protrusion on the surface of the exterior component, since this will limit the design of the camera. If the elastic member is simply provided in the space between the internal structural component and the external component of the image capturing apparatus, the internal structural component and the external component may be displaced from each other by a plurality of external impacts. Alternatively, if a separate cover for covering the entire image capturing apparatus is provided in addition to the image capturing apparatus itself, a considerable increase in cost and an increase in size of the image capturing apparatus cannot be avoided.

SUMMARY OF THE INVENTION In view of the above-mentioned problems of the conventional example, it is an object of the present invention to provide a shock-resistant photographing device which does not increase the size of the device and does not affect internal structural parts against a shock.

[0006]

In order to achieve the above-mentioned object, the shock-resistant photographing apparatus of the present invention is provided with a first elastic member in a space between an internal structural component and an exterior component covering the internal structural component, The interior structural component is fixed to the exterior component, and a fixing component for substantially positioning both components is provided. Further, a second elastic member may be provided around the fixed component. Further, the first part is provided in the hole of the exterior part through which the fixed part passes.
The elastic member may be attached. Further, it is preferable that at least one of the internal structural component and the exterior component is provided with a replaceable convex portion that can be damaged by an impact.

[0007]

In the shock-resistant photographing device having the above-described structure, the internal structural parts are supported by the elastic members in a floating manner with respect to the exterior parts, or by the convex portions that are easily broken by the shock, so that the shock force is reduced and dispersed or absorbed. It is possible to reduce the influence on the internal structural parts and to make it relatively waterproof.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention will be described below with reference to FIGS. FIG. 1 is an exploded perspective view of this embodiment, and FIG.
FIG. 4 is a cross-sectional view of an essential part of the assembly fixing part. In FIG. 1, 1a and 1b are upper and lower exterior parts, and 2 is an internal structural part, and a connector switch that is turned on by pressing a screw hole 2a screwed with a screw 4 described later and a switch lever 7 described later on its upper surface 2b is provided. 3a, 3b
3c and 3d are annular first elastic members made of, for example, butyl rubber, which are interposed near the positioning portions between the upper exterior component 1a, the lower exterior component 1b and the internal structural component 2, respectively.
Is the elastic member 3 for the exterior parts 1a and 1b and the internal structural part 2.
A screw with a flange for position-fixing and fixing via a to 3d, 5 is an O-ring attached to a joint between the upper exterior component 1a and the lower exterior component 1b, and 6 is a switch welded to the upper exterior component 4a. A rubber, 7 is a switch lever, which is urged upward by a spring 8 between the switch rubber 6 and the connector switch 2b of the internal structural component 2 so that the upper exterior component 4a.
It is held by a switch retainer 9 attached to the inner surface of the. Further, a waterproof ring 1c having a waterproof effect is formed on the front surface side of the lower exterior component 1b by a shooting lens barrel housed in the internal structural component 2 during assembly being pushed out after assembly and lightly press-fitted.

In this embodiment having the above construction, the upper and lower exterior parts 1a, 1 through which the screw 4 passes in the completely assembled state.
The inner structural part 2 is floatingly supported by the support of elastic members 3a to 3d inside the box body made of the exterior parts 1a and 1b, except for the hole b. Then, by screwing the screw 4 into the screw hole 2a of the internal structural component 2, a prescribed space is created between the flange portion of the screw 4 and the internal structural component 2, as shown in FIG. Exterior parts 1a, 1 stopped by the flange portion of the screw 4
Numeral b is a screw-shaft hole fit, and the position is regulated in the left-right direction with respect to the screw insertion direction. If the screw-shaft hole cannot be fitted, a similar function can be obtained by providing uneven fitting portions on the inner surfaces of the exterior components 1a and 1b and the outer surface of the internal structural component 2. In addition, the internal structural component 2 and the exterior components 1a and 1b
Elastic member 3 provided around the screw shaft that is lightly compressed by
The exterior parts 1a and 1b are further restricted in position in the screw insertion direction by a to 3d.

Next, as shown in FIG. 2B, the exterior component 1
When an impact force F parallel to the screw insertion direction is applied to a, the flange portion of the screw 4 is lower than the surface of the exterior component 1a so that the impact force does not transmit the force directly to the internal structural component 2. . Since the impact force other than the impact force parallel to the screw insertion direction is stopped by the screw shaft hole fitting portion, the screw shaft portion, the screw hole portion of the exterior component 1a and the screw hole portion 2a of the internal structural component 2 are provided. Needs to be strong,
When an impact force parallel to the screw insertion direction is transmitted to the exterior component 1a as shown in the figure, the impact force causes a part of the energy to be converted into sound, deformation of the exterior component, friction between the exterior components, and the like. The remaining force is transmitted to the elastic members 3a to 3d. The force transmitted to the elastic members 3a to 3d is transmitted to the internal structural component 2 after a part of the energy is converted into deformation of the elastic member and accompanying heat energy. After that, the above-described series of transmissions, transmission of force in the opposite direction, and vice versa, in a state similar to so-called simple vibration, and the vibration ends with the passage of time. At this time, the positional relationship between the exterior components 1a and 1b and the internal structural component 2 is restricted by the screw shaft hole fitting and the pressing force of the elastic members 3a to 3d, and does not substantially change before and after the impact.

As described above, the time required for the impact force to propagate from the exterior parts 1a and 1b to the internal structural part 2 via the elastic members 3a to 3d is longer than that required for direct connection without using the elastic members. And the force applied per unit time is reduced. In other words, the impact force that a large amount of force is momentarily applied is converted into a small force with a certain amount of time. As a result, it is possible to prevent the internal structural parts from being damaged or out of step due to the impact.

FIG. 3 shows a second embodiment of the present invention. For simplification of description, the same parts as those in the first embodiment are designated by the same reference numerals, and only different points will be described. In this embodiment, an S-shaped leaf spring 11 is used instead of the elastic member 3 in the first embodiment. The other structure is similar to that of the first embodiment. Even in this case, the same effect as that of the elastic member 3 can be obtained with respect to the impact force.

FIG. 4 shows a third embodiment of the present invention. In this embodiment, an O-ring packing 12 is installed in a part of the screw hole through which the screw 4 of the upper exterior component 1a passes. Further, the screw hole through which the screw 4 of the lower exterior component 1b passes has the same configuration. The other structure is the first described above.
It is similar to the embodiment. In the present embodiment having the above-mentioned configuration, the shafts of the exterior parts 1a and 1b and the screw 4 are positionally regulated in a fitted state, and the packing 12 is constantly crimped, so that the exterior parts 1a and 1b vibrate vertically due to an external force. Even so, airtightness is maintained. As a result, the photographing apparatus main body can be almost completely waterproofed.

FIG. 5 shows a fourth embodiment of the present invention. In this embodiment, the second elastic member 21 is mounted on the entire inner peripheral surface of the screw hole through which the screw 4 of the upper exterior component 1a passes. Further, the screw hole through which the screw 4 of the lower exterior component 1b passes has the same configuration. The other structure is similar to that of the first embodiment.

In the present embodiment having the above structure, the third
The difference from the embodiment is that the position of the exterior parts 1a and 1b in the direction orthogonal to the screw insertion direction is restricted by the screw 4 and the exterior part 1.
By providing only the second elastic member 21 through the screw holes a and 1b, the external force in the direction orthogonal to the screw insertion direction shown in the first embodiment is also applied to the screw shaft and the screw hole of the exterior component, It is possible to expect the effect of mitigating the impact force in all directions where the impact force is applied without directly receiving it with the screw holes of the internal structural parts.

FIG. 6 shows a fifth embodiment of the present invention. In the present embodiment, the elastic member 31 with the second elastic member 31a is formed by integrating the first elastic members 3a to 3d and the second elastic member 21 in the fourth embodiment. The other structure is similar to that of the first embodiment. In this embodiment having the above-described structure, the manufacturing cost of the elastic member 31 can be reduced and the assembling thereof can be facilitated, and further, the effect of alleviating the impact force from the outside can be expected.

7 and 8 show a sixth embodiment of the present invention. FIG. 7 is a vertical cross-sectional view of this embodiment, and FIG. 8 is a top view with its upper exterior part removed. Instead of the elastic members 3a to 3d in the above-described first embodiment, in the present embodiment, the protrusions having an acute angle such that they are in close proximity to the internal structural component 2 when assembled on the inner surface of the upper exterior component 1a and the lower exterior component 1b. The part 41 is provided. The other structure is similar to that of the first embodiment.

In this embodiment having the above construction, the flanged screw 4 is fastened to the screw hole 2a of the internal structural component 2 through the screw hole of the external structural component 1a, 1b, and the external structural component 1a, 1b and internal structural component 2 Pressure contact is made leaving some space between and. Then, when an impact force is applied from the outside, the exterior components 1a and 1b are deformed, the convex portions 41 come into contact with the internal structural component 2, and further deformed to absorb energy at the time of impact. When the impact force is large, the convex portion 41 is naturally destroyed, but the influence on the internal structural parts is small accordingly.
Further, when the exterior parts 1a and 1b are replaced, or when the convex portion 41 is attached to and detached from the exterior parts 1a and 1b, the reproduction can be performed by exchanging only the convex portion.

9 and 10 show a seventh embodiment of the present invention. 9 is a longitudinal sectional view of this embodiment, and FIG. 10 is a perspective view of its internal structural parts. In this embodiment, the convex portion 4
1 is provided on the upper structural part 1a and the lower external part 1b of the sixth embodiment, instead of being mounted on the internal structural part 2 in a detachable manner. The other structure is similar to that of the sixth embodiment. Also in this embodiment having the above-mentioned structure, the convex portion 41 acts as a damper against the impact force from the outside similarly to the sixth embodiment, and when it is destroyed, the convex portion 41 is replaced and regenerated.

[0020]

As described above, according to the present invention, by providing the first elastic member in the vicinity of the positioning portion of the space between the internal structural parts of the photographing apparatus and the exterior parts covering the same,
The internal structural parts can be easily floating-supported in the external parts, or the fragile protrusions can be provided between the external parts and the internal structural parts to easily reduce and disperse the impact force and absorb it to the internal structural parts. The effect of being able to reduce the influence of is also, the manufacturing cost is not high, it is easy to assemble, there is no restriction on the external design, and the device is not upsized.

[Brief description of drawings]

FIG. 1 is an exploded perspective view of a shock-resistant imaging device according to a first embodiment of the present invention.

FIG. 2 is a cross-sectional view of a main part of the screw mounting portion, (a)
Shows a state where no impact force is applied, and (b) shows a state when an impact force is applied.

FIG. 3 is a cross-sectional view of essential parts of a shock-resistant imaging device according to a second embodiment of the present invention.

FIG. 4 is a cross-sectional view of essential parts of a shock-resistant imaging device according to a third embodiment of the present invention.

FIG. 5 is a cross-sectional view of essential parts of a shock-resistant imaging device according to a fourth embodiment of the present invention.

FIG. 6 is a cross-sectional view of essential parts of a shock-resistant photography device according to a fifth embodiment of the present invention.

FIG. 7 is a sectional view of a shock-resistant imaging device according to a sixth embodiment of the present invention.

FIG. 8 is a top view with the upper exterior part removed.

FIG. 9 is a cross-sectional view of a shock-resistant imaging device according to a seventh embodiment of the present invention.

FIG. 10 is a top view with the upper exterior part removed.

[Explanation of symbols]

1a ... upper exterior parts, 1b ... lower exterior parts, 2 ...
Internal structural parts 2a ··· Screw hole 2b · · Connector switch 3a to 3d ··· First elastic member 4 · · Flange screw 5 · · O-ring 6 · · Switch rubber 7
..Switch lever, 8 ... spring, 11 ... S-shaped leaf spring, 12 ... O ring packing, 21 ... second elastic member, 31 ... elastic member, 41 ...

Claims (5)

[Claims] 1. A fixing component, wherein a first elastic member is provided in a space between an internal structural component and an exterior component covering the internal structural component, and the first elastic component is fixed to the external structural component and substantially positions both components. A shock-resistant imaging device characterized by being equipped with. 2. The shock-resistant imaging device according to claim 1, wherein a second elastic member is provided around the fixed component. 3. The first elastic member is attached to a hole portion of an exterior component through which the fixed component passes.
The shock-resistant imaging device described. 4. A space having a space between an internal structural component and an exterior component covering the internal structural component, and at least one of the internal structural component and the external component is provided with a convex portion that can be damaged by impact. Shock-resistant imaging device. 5. The shock-resistant imaging device according to claim 4, wherein the convex portion is replaceable.