JP6769804B2 - Camera mounting structure for intercom equipment - Google Patents

Description

The present invention relates to an intercom device provided with a camera, and more particularly to a camera mounting structure thereof.

Intercom devices such as entrance slave units and collective entrance units for calling residents are widely equipped with a camera that captures visitors. Since the camera used in this intercom device preferably has no blind spots that cannot be imaged, it is preferable to image a wide-angle area such as 180 degrees, and in that case, the lens of the camera has a shape protruding from the front surface of the case.
In the case of an intercom device equipped with such a camera, if a suspicious person maliciously hits the lens part of the intercom device to break the camera, the camera mounting part will be destroyed even if the camera itself is not broken. In some cases, the camera got inside the case and could not capture the area to be imaged. Therefore, for example, the measures described in Patent Document 1 have been taken.

In Patent Document 1, a coil spring is arranged on a screw that fixes a camera with an integrated lens to a case, and the camera is maintained in a state of being urged forward with play in the front-rear direction, and a hammer from the front. When a destruction operation such as being hit by a lens or the like is performed, the elasticity of the coil spring prevents the camera from being destroyed by moving into the case, enabling the continuation of imaging.

JP 2015-185924

The structure with play in mounting the camera was able to prevent the camera and its mounting part from being destroyed, but it requires multiple coil springs and the structure of the fitting part to be screwed is also complicated. As a result, the structure was expensive.

Therefore, in view of these problems, the present invention has a camera mounting structure of an intercom device having a simple structure capable of continuously performing imaging even if an impact is applied to the lens of the camera and the fixed portion of the camera is destroyed. Is intended to provide.

In order to solve the above problems, the invention of claim 1 is to mount a camera of an interphone device in which a camera is fixed around the camera window of the case in a state where the camera lens is exposed to a camera window opened on the front surface of the case. In the structure, screw insertion portions for inserting screws for fixing the camera to the case are provided at a plurality of places around the camera lens, while holes for screwing the screws are provided on the inner surface of the case around the camera window. The screw receiving member to be provided is provided in accordance with the screw insertion portion, and the screw receiving member is formed in a tubular shape and protrudes rearward from the inner surface of the case, and only one of the plurality of screw receiving members is provided. , In addition to the base end where the bottom of the hole is located and becomes the base, a part of the side that is continuous with the base and beyond the bottom of the hole is also formed integrally with the case. The other screw receiving member is a single-connecting screw receiving member in which only the base end portion is integrally formed with the case.
According to this configuration, when an impact such as hitting the lens from the front is applied and the lens is pressurized toward the inside of the case, stress is concentrated on the base of the screw receiving member and the base of the screw receiving member is peeled off from the case. Stress is generated in the lens, and the screw receiving member and the case are broken and peeled off from the weakly connected part. However, since one of the plurality of screw receiving members provided is a double-connecting screw receiving member in which a part of the side portion continuous with the base end portion is integrally formed with the case in addition to the base end portion, the connection is strong. Yes The connected state is maintained until the end, and when the other screw receiving members are peeled off, the camera tilts and the lens enters the camera window to prevent it from completely peeling off and falling off. This is because even if the impact on the camera is continued after that, the impact is absorbed by the case around the lens and the stress on the lens is reduced.
Therefore, by using a double-connecting screw receiving member that connects only one side to the case, it is configured so that it will not be peeled off until the end, or conversely, another screw receiving member can be easily peeled off from the case. It is possible to continue imaging even after that without dropping the camera, and it is possible to continue imaging with a simple structure without using an elastic member or the like.

According to the second aspect of the present invention, in the configuration according to the first aspect, among the plurality of screw receiving members, the screw receiving member arranged at the uppermost portion when the case is installed on the wall surface is the double connecting screw receiving member. Moreover, the side portion integrally formed with the case of the double connecting screw receiving portion is the side portion that is the farthest portion with respect to the lens.
According to this configuration, the screw receiving member on the top of the camera is the most difficult to peel off, and even if the other screw receiving member is peeled off from the case, the camera only needs to face slightly downward due to the weight of the camera, and the image of the visitor continues. It will be possible. Since the side portion connected to the case of the double-connecting screw receiving member is the farthest part from the lens, even if the other screw receiving member is peeled off from the case and the camera is tilted, the part where stress is most unlikely to be applied. Is connected to the case, so the connected state can be maintained and complete separation can be avoided.

According to the present invention, one of the plurality of screw receiving members provided is a double-connecting screw receiving member in which not only the base end portion but also a part of the side portion continuous with the base end portion is integrally formed with the case. Even if an impact such as hitting the lens from the front is applied, the connection is strong and the connection state is maintained until the end, and when the other screw receiving members are peeled off, the camera tilts and the lens enters the camera window and completely peels off. It can prevent falling out.
Therefore, by using a double-connecting screw receiving member that connects only one side to the case, it is configured to remain without peeling until the end, conversely, by forming the other screw receiving member so that it can be easily peeled off from the case. It is possible to continue imaging even after that without dropping the camera, and it is possible to continue imaging with a simple structure without using an elastic member or the like.

An example of a camera mounting structure of an intercom device according to the present invention is shown, and is a perspective explanatory view of a case body in which a back cover is removed and a camera is exposed as viewed from the rear. It is a perspective explanatory view of the case main body which removed the camera in the state of FIG. It is an external view of a case, (a) is a front view, and (b) is a side view. It is a perspective view of a camera. It is a partially enlarged view of the case main body, and is the back explanatory view of the case main body which enlarged the camera mounting part. A partial cross-sectional view of the case body is shown, (a) is a cross-sectional view taken along the line AA of FIG. 5, and (b) is a cross-sectional view taken along the line BB.

Hereinafter, embodiments embodying the present invention will be described in detail with reference to the drawings. 1 to 3 show an example of the camera mounting structure of the intercom device according to the present invention, FIG. 1 is a perspective explanatory view of a case body in which the camera is exposed by removing the back cover, a substrate, etc., and FIG. 2 is a rear view. It shows a state in which the camera is further removed from this state. 3A and 3B show an external view of the case, FIG. 3A shows a front view, and FIG. 2B shows a side view.
The case 1 has a front surface 11 and a peripheral side surface 12, and the back portion is open, and a case main body 1a for storing a camera 2 and a substrate (not shown) and a back cover 1b for closing the opened back portion of the case main body 1a. The camera 2 is arranged on the upper part of the front surface 11 which is the upper part when installed on the wall surface of the case body 1a, the display 4 displaying the callee information and the like is under the camera 2, and the speaker 5 is under the display 4. At the bottom, an operation button 6 such as a numeric keypad for inputting a callee is provided.

As shown in FIG. 2, a circular camera window 14 is opened in the camera mounting portion R of the case body 1a, and the camera 2 is arranged by exposing the lens of the camera 2 to the camera window 14. Then, the camera 2 is fixed by the screws 7 to the screw receiving members 15 provided at three locations around the camera window 14 on the inner surface Q of the case body 1a.
By attaching the camera 2 to the camera mounting portion R, when the case 1 is installed on the wall surface, the camera 2 facing forward is configured to take an image of a visitor who calls and operates.

FIG. 4 is a perspective view of the camera 2. The lens 21 of the camera 2 is attached to the lens holder 22, and the lens holder 22 is fixed to the circuit board 23 on which the image sensor or the like is mounted by screws 25 (shown in FIG. 1). ing.
A fixing piece 24 having a screw insertion hole 24a for attaching the camera 2 to the case body 1a is projected around the lens holder 22. The fixing pieces 24 are formed at three positions around the lens 21, and screw insertion holes 24a are provided at equal intervals around the lens 21.

As shown in FIG. 2, a tubular screw receiving member 15 having a hole 16 for screwing the screw 7 on the central axis is formed inside the corresponding case body 1a. The screw receiving member 15 projects rearward from the inner surface Q of the case body 1a and is integrally formed with the case body 1a.
A screw 7 is screwed into the screw receiving member 15 of the case body 1a via the fixing piece 24, and the camera 2 is connected and fixed at three peripheral points.

5 is an enlarged rear view of a part of the case body 1a shown in FIG. 2, FIG. 6A is a sectional view taken along line AA, and FIG. 6B is a sectional view taken along line BB. FIG. 6A is a view cut along a line passing through the central axis M2 of the screw receiving member 15 arranged at the uppermost portion from the center M1 of the camera window 14, and FIG. 6B is a view from the center M1 of the camera window 14. It is a figure cut by the line passing through the central axis M3 of the screw receiving member 15 arranged at the lowermost part.
For convenience of explanation, among the three screw receiving members 15, the one arranged at the uppermost part is the first screw receiving member 15a, and the one arranged at the lowermost part is the second screw receiving member 15b at the intermediate position. The arranged one will be described as a third screw receiving member 15c.

As shown in FIG. 6A, the first screw receiving member 15a is integrated with the case body 1a by connecting a part P of a side portion continuous with the base end portion in addition to the base end portion in the central axis M2 direction. (The structure connected to this side is hereinafter referred to as "double connection screw receiving member"). A part P of the integrated side portion is a portion that is outside when viewed from the center M1 of the camera window 14, and the farthest portion is integrated.

On the other hand, as shown in FIG. 6B, in the second screw receiving member 15b, only the base end portion in the direction of the central axis M3 is integrally formed with the case body 1a, and the periphery thereof is not connected (only this base end portion). The connected configuration is hereinafter referred to as "single connecting screw receiving member").
Since the remaining third screw receiving member 15c in the intermediate portion has the same configuration as the second screw receiving member 15b and is a simply connected screw receiving member, the description thereof will be omitted.

When the camera 2 is attached to the case body 1a provided with the screw receiving member 15 formed in this way, an impact such as hitting the lens 21 is applied from the front, and the lens 21 is pressurized toward the inside of the case 1. Then, the stress is concentrated on the base of the screw receiving member 15, and the stress is generated in the direction in which the base of the screw receiving member 15 is peeled off from the case 1. As a result, the screw receiving member 15 and the case 1 are broken and peeled off from the weakly connected portion.
However, in addition to the base end portion of the first screw receiving member 15a of the three screw receiving members 15 provided, a part P of the side portion continuous with the base end portion is also formed integrally with the case. Since it is a connecting screw receiving member, the connection is strong and the connected state is maintained until the end, and when the other screw receiving member 15 is peeled off, the camera 2 tilts and the lens 21 enters the camera window 14 and completely peels off. Can be prevented. This is because even if the impact on the camera 2 is continued thereafter, the impact is absorbed by the case body 1a around the lens 21 and the stress on the lens 21 becomes small.
Therefore, by using a double-connecting screw receiving member that connects only one side portion to the case body 1a, the screw receiving member 15 is configured to remain without being peeled off until the end. Conversely, the other screw receiving member 15 is peeled off from the case body 1a. By forming the camera 2 easily, it is possible to continue imaging without dropping the camera 2, and it is possible to continuously perform imaging with a simple structure without using an elastic member or the like.

Then, by using the first screw receiving member 15a on the upper part of the camera 2 as a simply connected screw receiving member, it can be made most difficult to peel off, and the other second and third screw receiving members 15b and 15c are used as a simply connected screw receiving member in the case body 1a. Even if it is peeled off from the camera 2, the camera 2 only needs to face slightly downward due to the weight of the camera 2, and the image of the visitor can be continuously taken.
In addition, since the side portion of the first screw receiving member 15a, which is the double connecting screw receiving member, connected to the case body 1a is the farthest part with respect to the lens 21, the other simply connected screw receiving member is the case 1. Even if the camera 2 is tilted due to peeling from the lens 21, the side portion of the screw receiving member 15 which is farthest from the lens 21 and is less likely to be stressed is connected to the case 1, so that the connected state can be maintained and complete separation can be avoided.

In the above embodiment, the screw receiving members 15 are arranged around the camera window 14 at three places, and the camera 2 is screwed at three places to be connected and fixed to the case body 1a, but there are two screwed places at the top and bottom. It may be only, or it may be screwed in four or more places. In either case, one screw receiving member 15 located at the uppermost portion is used as a simply connected screw receiving member, and the other screw receiving member 15 is used as a simply connected screw receiving member to maintain the connection of the simply connected screw receiving member. This makes it possible to prevent the camera 2 from falling out in the case 1 and to continuously perform imaging of the visitor.

1 ... Case, 1a ... Case body, 2 ... Camera, 7 ... Screw, 14 ... Camera window, 15 ... Screw receiving member, 15a ... 1st screw receiving member (double connecting screw receiving member), 15b ... 2nd screw receiving member (single connecting screw receiving member), 15c ... 3rd screw receiving member (single connecting screw receiving member), 21 ... lens, Q ... inner surface, R ... camera mounting part.

Claims (2)

It is a camera mounting structure of an intercom device in which the camera is fixed around the camera window of the case with the camera lens exposed on the camera window opened on the front of the case.
While the screw insertion portions for inserting the screws for fixing the camera to the case are provided at a plurality of locations around the lens of the camera, while
On the inner surface of the case around the camera window , a screw receiving member having a hole for screwing the screw is provided in accordance with the screw insertion portion.
The screw receiving member is formed in a tubular shape and is formed so as to project rearward from the inner surface of the case.
Only one of the plurality of screw receiving members is a side portion that is continuous with the base end portion and exceeds the bottom portion of the hole , in addition to the base end portion at which the bottom portion of the hole is located and serves as a base . some with also a member receiving multiple connecting screw which is formed integrally with the case, it is the other of the screw receiving member is a single connecting screw receiving member which is formed integrally with the case only the base end portion The camera mounting structure of the intercom device that features. Among the plurality of screw receiving members, the screw receiving member arranged at the uppermost portion when the case is installed on the wall surface is the double connecting screw receiving member.
The camera mounting structure for an intercom device according to claim 1, wherein the side portion of the double-connecting screw receiving portion integrally formed with the case is a side portion that is the farthest portion with respect to the lens.

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