JP6097811B1 - Shutter device, imaging device, and assembly structure - Google Patents

Abstract

A shutter device and the like that can easily determine an assembly error visually.
SOLUTION: A base plate (10) and a back plate (20) each having an opening (1) for an optical path are movably disposed between the base plate and the back plate, and the opening / closing state of the opening by movement is achieved. And a plurality of shutter blades (41, 42) configured to be changeable, and the back plate is formed with a first hole (21) through which all of the plurality of shutter blades can be visually recognized. Adopting a shutter device.
[Selection] Figure 1

Description

  One embodiment of the present invention relates to an assembly structure such as a shutter device used in an imaging device such as a camera.

  2. Description of the Related Art Conventionally, there is a blade driving device in which blades (shutter blades, filter blades, or diaphragm blades) are disposed between a base plate and a back plate, which are used in cameras and the like. In such a blade drive device, the base plate, the back plate, and the plurality of blades are formed and assembled as separate members. In this regard, Patent Document 1 and Patent Document 2 disclose such blade driving devices.

Japanese Patent Laying-Open No. 2015-106031 JP, 2015-106016, A

  However, since the blade driving device such as the conventional camera shutter device includes many turret members, and these members have similar members, an assembly error may occur. If an assembly error occurs, the device may not operate normally. In such a case, it has been difficult to confirm whether or not there is an assembly error unless the assembled device is disassembled. However, it took considerable time to disassemble the assembled device. Further, when the assembled device is reassembled, due to screw tightening or the like, the same operation as before the device disassembly is not necessarily performed, and it may be difficult to identify the cause of the failure.

  The present invention adopts the following means in order to solve the above problems. In the following description, in order to facilitate understanding of the invention, reference numerals and the like in the drawings are appended in parentheses, but each component of the present invention is not limited to these appendices. It should be construed broadly to the extent that contractors can technically understand.

One means of the present invention is to
A base plate (10) and a back plate (20) each having an opening (1) for an optical path;
A plurality of shutter blades (41, 42) arranged movably between the base plate and the back plate, and configured to change the open / closed state of the opening by movement;
The back plate is formed with a first hole (21) that can visually recognize all of the plurality of shutter blades.
This is a shutter device.

  According to the shutter device having the above configuration, it is possible to visually check whether the plurality of shutter blades are appropriately assembled from the back plate side, and it is possible to easily determine whether there is an assembly error. Further, if the periphery of the first hole is imaged by an imaging device such as a monitoring camera and image processing is performed, it is possible to automatically perform whether or not the shutter device has an assembly error in an assembly inspection process.

In the shutter device, preferably,
One of the plurality of shutter blades (41) is formed with a second hole portion through which the other plurality of shutter blades can be viewed from the back plate side.

  According to the shutter device having the above configuration, a plurality of shutter blades can be visually recognized from the first hole portion of the back plate, and the second hole portions of the other shutter blades can be visually recognized from the hole portion of one shutter blade. Thereby, it is possible to easily confirm whether or not the plurality of shutter blades are appropriately assembled from the back plate side.

In the shutter device, preferably,
The first term part is larger than the second hole part,
The first hole and the second hole are concentric.

  According to the shutter device having the above-described configuration, it is possible to determine whether or not each member is appropriately arranged without being displaced in the horizontal direction. Alternatively, by continuously leaving an image around the first hole during inspection, it is possible to detect deformation of the mold for molding each member.

  According to another aspect of the present invention, there is provided an imaging apparatus including any one of the shutter devices described above.

  According to the imaging apparatus having the above configuration, it is possible to easily determine an assembly error of the shutter device portion.

Another means of the present invention is as follows:
An assembly structure in which a first structure (back plate 20), a second structure (shutter blade 41), and a third structure (such as shutter blade 42 or partition plate 31) are sequentially stacked,
The first structure (back plate 20) is formed with a first hole portion through which the second structure and the third structure can be visually recognized.
The second structure (shutter blade 41) is formed with a second hole portion through which the third structure can be visually recognized from the first structure side.
It is an assembly structure.

  According to the assembly structure having the above-described configuration, an assembly error can be visually recognized from the first hole, and thus, a structure in which the assembly error can be easily determined can be obtained.

The 1st exploded perspective view of a shutter device. The 2nd exploded perspective view of a shutter device. The figure which looked at the shutter device of an embodiment from the back board side. The figure which shows the hole of the assembled shutter apparatus of embodiment. The figure which looked at the shutter apparatus of the modification from the back plate side. The figure which shows the hole of the assembled shutter apparatus of a modification.

An embodiment according to the present invention will be specifically described according to the following configuration with reference to the drawings. However, the embodiments described below are merely examples of the present invention, and do not limit the technical scope of the present invention. In addition, in each drawing, the same code | symbol is attached | subjected to the same component and the description may be abbreviate | omitted.
1. Embodiment 2. FIG. Modified example 2. Supplementary matter

<1. Embodiment>
One of the features of the shutter device applied to the camera of this embodiment is that the shutter blades and the partition plate can be visually recognized from the holes formed in the back plate. Hereinafter, the shutter device of the present embodiment will be specifically described with reference to the drawings.

  FIG. 1 is an exploded perspective view of the shutter device of the present embodiment. FIG. 2 is an exploded perspective view of the shutter device (the back side portion of the main plate) of the present embodiment, viewed from the side opposite to the side of FIG.

  As shown in FIG. 1, the shutter device of the present embodiment includes a base plate 10, a back plate 20, partition plates 31 and 32, and shutter blades 41 and 42. These members are assembled in the order of the base plate 10, the partition plate 32, the shutter blade 42, the partition plate 31, the shutter blade 41, and the back plate 20. Each of these members is assembled by screws 51. A blade chamber is formed between the partition plate 32 and the partition plate 31, and between the partition plate 31 and the back plate 20, and a shutter blade 42 and a shutter blade 41 are disposed in each blade chamber.

  As shown in FIG. 2, a concave portion is formed on the surface of the main plate 10 opposite to the surface on which the shutter blades 41 and 42 are disposed, and the rotor 60, the yoke 70, and the bobbin integrated type are formed in this concave portion. The pressing plate 80 and the electrode plate 90 are arranged. Each of these members is assembled by screws 52 and 53. When actually assembled, the yoke 70 is inserted into the bobbin portion of the presser plate 80 integrated with the bobbin.

<Ground plate 10>
The base plate 10 is formed in a circular shape with an opening at the center thereof, and is configured to support each configuration of the shutter device including the shutter blades 41 and 42 on the first surface side. On the first surface side of the main plate 10, for example, a screw hole into which a screw 51 can be inserted is formed.

<Back plate 20>
Similar to the base plate 10, the back plate 20 is formed in a circular shape with an opening at the center. The back plate 20 is disposed at a position facing the base plate 10 on the first surface side. As described above, the partition plates 31 and 32 and the shutter blades 41 and 42 are disposed between the base plate 10 and the back plate 20. The back plate 20 is fixed to the base plate 10 with screws 51. Further, a hole 21 is formed in the back plate 20. In a state where the shutter device is assembled, at least some of the shutter blade 41, the partition plate 31, the shutter blade 42, and the partition plate 32 are formed from the hole portion 21 of the back plate 20 on the side opposite to the base plate 10. The configuration is visible. The hole 21 is an example of the first hole in the present invention.

<Partition plates 31 and 32>
The partition plates 31 and 32 are disposed between the main plate 10 and the back plate 20. The partition plates 31 and 32 are formed in a circular shape, and an opening is formed at the center thereof. A blade chamber in which the shutter blades 41 are disposed is formed between the partition plate 31 and the back plate 20, and a blade chamber in which the shutter blades 42 are disposed is formed between the partition plate 31 and the partition plate 32. . The partition plates 31 and 32 are arranged to prevent the shutter blades 41 and 42 from being worn or damaged due to contact with each other. If the shutter blades are not easily in contact with each other, the partition plates 31 and 32 may be unnecessary. Further, depending on the shape of the main plate 10, the partition plate 32 may not be provided between the main plate and the shutter blade 42.

<Shutter blades 41 and 42>
The shutter blades 41 and 42 are disposed in a blade chamber between the back plate 20 and the partition plate 31 and in a blade chamber between the partition plate 31 and the partition plate 32, respectively. The shutter blades 41 and 42 operate to open and close the optical path openings formed in the base plate 10, the back plate 20, and the partition plates 31 and 32, respectively. The shutter blades 41 and 42 are respectively connected to the rotor 60 and are operated by rotating the rotor 60. Although detailed description will be given later, the partition plate 31, the shutter blade 41, and the shutter blade 42 are each provided with a hole at a position corresponding to the hole 21 (overlapping position) in the assembled state. Yes. Moreover, the hole provided in these members is an example of the 2nd hole in this invention.

<Rotor 60>
The rotor 60 is disposed in a concave portion formed on the second surface side opposite to the first surface side of the base plate 10, and is connected to the shutter blades 41 and 42. The rotor 60 is formed of a permanent magnet at least around the cylindrical portion. A yoke 70 is disposed at a position covering the periphery of the rotor 60, and the rotor 60 rotates when the magnetized state of the yoke 70 changes.

<Yoke 70>
The yoke 70 is disposed in the concave portion of the main plate 10 together with the rotor 60. The yoke 70 is formed in a U shape, and its end portion is formed in a shape lacking in a cylindrical shape. The rotor 60 is disposed in a portion of the yoke 70 that is lacking in a columnar shape, whereby the yoke 70 is disposed so as to cover the periphery of the rotor 60. The yoke 70 is inserted into the bobbin portion of the bobbin integrated presser plate 80. The yoke 70 is excited by energizing a coil formed by winding on the bobbin portion, and the magnetized state changes, thereby rotating the rotor 60.

<Bobbin integrated presser plate 80>
The bobbin integrated presser plate 80 is configured to press and hold the yoke 70 and the rotor 60 in a recess formed in the base plate 10 by being fixed to the base plate 10 with screws 52 and 53. In the assembled state, a winding is formed on the bobbin, thereby forming a coil that covers the yoke 70. Electric power is applied to the coil from the electrode plate 90, so that the yoke 70 can be excited.

<Electrode plate 90>
The electrode plate 90 is formed with wiring for applying electric power applied from the outside to the coil.

  Next, the structure around the hole 21 which is a characteristic part of the present embodiment will be described. FIG. 3 is a plan view of the shutter device during assembly as viewed from the back plate 20 side. In the shutter device, an opening 1 for an optical path is defined by openings formed in the base plate 10, the back plate 20, and the partition plates 31 and 32. As described above, the hole 21 is formed in the back plate 20. From the hole 21, the shutter blade 41, the partition plate 31, the shutter blade 42, and the partition plate 32 disposed in the back are visible. Note that only a part of these configurations may be visible from the hole 21.

  FIG. 4 is a view of the hole 21 in the assembled shutter device. 4A to 4G, at least a part of the shutter blade 41, the partition plate 31, the shutter blade 42, and the partition plate 32 is visually recognized from the hole portion 21 as described above. . 4A to 4C show an example in which the partition plate 32, the shutter blade 41, the partition plate 31, or the shutter blade 42 are visually recognized from the hole 21. FIG. 4D to 4F show an example in which the partition plate 32 and any two of the shutter blade 41, the partition plate 31, and the shutter blade 42 are visually recognized from the hole portion 21. FIG. FIG. 4G shows an example in which the shutter blade 41, the partition plate 31, the shutter blade 42, and the partition plate 42 are visually recognized from the hole 21.

  With reference to FIG. 4G, as described above, the shutter blade 41, the partition plate 31, the shutter blade 42, and the partition plate 32 that are visually recognized from the hole portion 21 of the back plate 20 are more than the hole portion 21. A hole having a small diameter is formed. If these holes are formed so that the diameter becomes smaller in the order of the shutter blade 41, the partition plate 31, the shutter blade 42, and the partition plate 32, all members can be viewed from the hole 21 of the back plate 20. . In a state where these members are visible, it can be determined that the shutter blade 41, the partition plate 31, and the shutter blade 42 are correctly assembled. On the other hand, when the member is visually recognized from the hole portion 21 of the back plate 20 in a state where the shutter blade 41, the partition plate 31 or the shutter blade 42 is not correctly assembled, for example, as shown in FIGS. Each member cannot be visually recognized from the portion 21. In such a case, it can be determined that it is not assembled correctly. Although not shown in FIG. 4, all the configurations of the shutter blade 41, the partition plate 31, the shutter blade 42, and the partition plate 32 and the base plate 10 are visible from the hole portion 21. Is possible.

  According to the shutter device having such a configuration of the hole portion 21 and the like, it is possible to visually check whether the plurality of shutter blades 41 and 42 are appropriately assembled from the back plate 20 side, and whether or not there is an assembly error. It becomes possible to determine easily. Further, if the periphery of the hole 21 is imaged by an imaging device such as a monitoring camera and image processing is performed, it is possible to automatically perform whether or not the shutter device has an assembly error in an assembly inspection process.

<2. Modification>
Next, a modified example of the configuration around the hole 21 which is a characteristic part of the present embodiment will be described. FIG. 5 is a plan view of the shutter device during assembly as viewed from the back plate 20 side. From the hole 21 formed in the back plate 20, the shutter blade 41, the partition plate 31, the shutter blade 42, and the partition plate 32 disposed in the back thereof are visible.

  FIG. 6 is a view of the hole 21 in the assembled shutter device. FIG. 6J shows an example of a state in which the shutter blades 41 and 42 and the partition plates 31 and 32 are correctly assembled. On the other hand, FIGS. 6A to 6I show an example of a state where any one of the shutter blades 41 and 42 and the partition plates 31 and 32 is not assembled correctly. In the state where the shutter blades 41 and 42 and the partition plates 31 and 32 shown in FIG. 6J are correctly assembled, the shutter blades 41 and 42 and the partition plates 31 and 32 are visually recognized in the correct state. . On the other hand, in a state where any of the shutter blades 41 and 42 and the partition plates 31 and 32 shown in FIGS. 6A to 6I is assembled by mistake, the shutter blades 41 and 42 and the partition plate 31 and 32 are visually recognized in an abnormal state.

  As described above, the shutter blade 41, the partition plate 31, the shutter blade 42, and the partition plate 32 that are visually recognized from the hole portion 21 of the back plate 20 can be seen from the hole portion 21 at the back of each configuration. A hole or a notch is formed. Although not shown in FIG. 6, all the configurations of the shutter blade 41, the partition plate 31, the shutter blade 42, and the partition plate 32 and the base plate 10 are made visible from the hole portion 21. Is possible.

<3. Supplementary items>
The specific description of the embodiment of the present invention has been given above. The above description is merely an embodiment, and the scope of the present invention is not limited to this embodiment, but should be broadly interpreted to the extent that a person skilled in the art can grasp.

  In the above embodiment, the shutter device has been described as an example. However, such a configuration is not necessarily limited to the shutter device, and can be applied to various assembly structures. However, such a configuration is particularly useful in a shutter device in which an assembly error is likely to occur because the shutter blades and the partition plate have similar shapes, and it is difficult to check the assembly error after assembly.

  Further, in the shutter device of the above embodiment, the shutter blade 41, the partition plate 31, the shutter blade 42, and the partition plate 32 have holes or notches so that the overlapping state of each configuration can be visually recognized from the hole 21. Preferably it is formed. Thereby, it becomes possible to easily determine whether or not the components are appropriately stacked and assembled.

  In the shutter device of the above embodiment, the partition plate and the shutter blade are visible from the hole 21 of the back plate 20, but a hole is formed in the base plate 10, and the partition plate and It is good also as a structure which can visually recognize a shutter blade | wing. However, the configuration in which the hole is formed in the relatively thin back plate 20 is preferable because the partition plate and the shutter blades behind the hole are easily visible.

  In the above embodiment, the hole portion is formed in a circular shape, but it is not necessarily formed in a circular shape, and may be formed in another shape such as a triangular shape, a quadrangular shape, or an elliptical shape. .

  In the above embodiment, the configuration including two shutter blades and two partition plates has been described as an example, but the number of shutter blades and partition plates can be arbitrarily designed.

  The shutter device of the present invention is suitably applied to a camera or the like.

DESCRIPTION OF SYMBOLS 1 ... Opening part 10 ... Base plate 20 ... Back plate 21 ... Hole part 31, 32 ... Partition plate 41, 42 ... Shutter blade 51, 52, 53 ... Screw 60 ... Rotor 70 ... Yoke 80 ... Bobbin integrated presser plate 90 ... Electrode plate

Claims (4)

A base plate and a back plate each having an opening for an optical path;
A plurality of shutter blades arranged to be movable between the base plate and the back plate, and configured to change the open / closed state of the opening by movement;
The back plate or the base plate is formed with a first hole that can visually recognize all of the plurality of shutter blades.
Shutter device. In the plurality of shutter blades of one, a second hole portion that allows the other plurality of shutter blades to be visually recognized from the back plate side or the base plate side is formed.
The shutter device according to claim 1. The first hole is larger than the second hole,
The first hole and the second hole are concentric,
The shutter device according to claim 2.   An imaging device comprising the shutter device according to any one of claims 1 to 3.

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