JPS61172126A - Image pickup device - Google Patents

Abstract

PURPOSE:To reduce the moving space of a shutter body by constituting the shutter body of plural shutter pieces, connecting a drive body to at least one shutter piece and installing a part engaged with other shutter pieces on some part of these shutter pieces. CONSTITUTION:The shutter pieces 10 and 11 of the shutter body 7 disconnect an optical path. When a motor 12 is driven by an action signal, the shutter piece 10 starts its upward moving, and is engaged with the engaged part of the shutter piece 11, which moves in the same direction. Then they abut on the projection 13a of a substrate 13 to stop, and at this time the optical path is in the completely opened state. Due to the termination of the action, the shutter piece 10 starts its downward moving by a spring 15 installed on a motor spindle 14, and is engaged with the engaged part of the shutter piece 11, which moves in the same direction. They abut on the projection 13b of the substrate 13 to stop and return to the state where they are inoperable.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to an imaging device used for monitoring purposes.

2. Description of the Related Art A conventional imaging device of this type has a structure as shown in FIG. 4 and as shown in FIG. 6. That is, it consists of an imaging body 1, a shutter body 3 on the optical path of the imaging surface 2 of the imaging body 1, and the shutter body 3 includes one shutter piece 4 located in front of the imaging surface 2 of the imaging body 1; It consists of a driver 6 that drives the shutter piece 4 and a substrate 6 to which the driver 6 is attached. Note that 7 is a balancer and 8 is a spring.

Problems to be Solved by the Invention However, in the imaging device configured as described above, in order to open and close the optical path by driving one shutter piece 4, this shutter piece 4 must be moved a large distance, which takes up a lot of space. , which increases the overall size and tends to impose restrictions on installation.

An object of the present invention is to reduce the movement space of the shutter body, thereby reducing the size of the entire shutter body and making it less likely to be subject to restrictions on installation.

In order to solve the problems and achieve the above object, the present invention consists of a plurality of shutter pieces of a shutter body, a driving body is connected to at least one of the shutter pieces, and these shutter pieces are connected to at least one of the shutter pieces. A part of the shutter piece has an engaging part with another shutter piece.

Operation With the above structure, when a shutter piece is driven by the drive body, other shutter pieces can be driven in the same way by engagement of the engaging portion.

At this time, if a mechanism is provided to stop the shutter pieces depending on the state of use, the shutter pieces will sequentially overlap and stop at that position. In other words, the amount of movement can be made much smaller than that of a shutter made of a single shutter piece, so the structure is simple, the overall size can be made smaller, and there are fewer restrictions on installation.

Embodiment Hereinafter, one embodiment of the present invention will be described based on the accompanying drawings. In FIGS. 1 and 2, the shutter body 7 is the image pickup body 8.
It is attached to the front surface of the imaging surface 9, that is, on the optical path to the imaging surface 9. The shutter body 7 includes a shutter piece 10 and a shutter piece 11 for blocking the optical path to the imaging surface 9, a motor 12 used as a driving body for driving the shutter pieces 1o and 11, and a motor 12. It is composed of a board 13 on which it is mounted.

The shutter piece 11 has an engaging portion 11 that engages with the shutter piece 1o.
a and 11b are provided, and the substrate 13 has a protrusion 1 for stopping the shutter pieces 10 and 11.
3a and 13b are produced.

The shutter piece 1o is connected to a motor 12, and the shutter piece 11 is connected to a motor shaft 14, which is a connection part of the shutter piece 1o to the motor 12, and a protrusion 13a on a substrate 13.
13b. and shutter piece 10
The optical path blocking portions 11 and 11 have a circular shape having the same shape as the cross section of the optical path, and are divided into two so that the optical path is not obstructed with a minimum movement space during operation. Further, the engaging portions 11a and 11b of the shutter piece 11 are cut and bent so that they are interlocked when the shutter piece 1o moves. Note that 16 is a balancer and 17 is a motor mounting portion.

The operation of the imaging apparatus configured as described above will be described below with reference to FIGS. 1, 2, and 3.

First, FIG. 2 shows the entire device, and FIG. 1 shows its main parts. Furthermore, FIG. 3 shows the state after operation. First, in FIG. 1, when the imaging device is not operating, the shutter pieces 1o and 11 of the shutter body 7 block the optical path. Next, when the motor 12 is driven by the operation signal, the connected shutter piece 1o begins to move upward and engages with the engaging portion 11a of the shutter piece 11.
The shutter piece 11 is also moved in the same direction. and board 1
It hits the protrusion 13a of No. 3 and stops. At this time, the optical path becomes completely open as shown in FIG.

Next, upon completion of the operation, the shutter piece 10 begins to move downward by the spring 16 attached to the motor shaft 14, engaging with the engaging portion 11b of the shutter piece 11, and the shutter piece 11 also moves in the same direction.

Then, it hits the protrusion 13b of the substrate 13 and stops.

At this time, the state returns to the non-operating state shown in FIG. 1 described above.

As another embodiment, the shutter can be made smaller by forming three or more shutter pieces and providing an engaging portion having the same function.

Further, the same effect can be obtained even if the substrate 13 is eliminated and a structure on the optical path has a function of stopping the shutter piece.

Effects of the Invention In the present invention, the shutter body provided on the light entrance side of the imaging body is composed of a plurality of shutter pieces, so the optical path can be opened and closed with a much smaller amount of movement than when the shutter body is made up of a single piece. can be done.

Therefore, according to the present invention, the entire image pickup device can be made smaller with a simple structure, so that if the image pickup device of the present invention is used, the entire product can be made smaller, and furthermore, the installation of the product is less subject to restrictions.

[Brief explanation of drawings]

FIG. 1 is an enlarged front view of essential parts of an imaging device according to an embodiment of the present invention, FIG. 2 is an overall perspective view of the imaging device, and FIG. 3 is an enlarged front view of essential parts of the imaging device during operation. FIG. 4 is an overall perspective view of a conventional imaging device, and FIG. 5 is an enlarged front view of main parts of the conventional imaging device. 8... Imaging body, 10.11... Shutter piece, 11a, 11b... Engaging portion, 12...
...Motor (driver). Name of agent: Patent attorney Toshio Nakao and 1 other person No. 4
Figure 5 Figure 1 Be smart

Claims (1)

[Claims] It consists of an imaging body and a shutter body provided on the light entrance side of the imaging body, and the shutter body includes a plurality of shutter pieces and a driving body for driving at least one of the shutter pieces, and the shutter body includes a plurality of shutter pieces and a driving body for driving at least one of the shutter pieces. An imaging device that has an engaging part on one side that connects to another shutter piece.