JP5720469B2 - Attachment mounting apparatus, attachment mounting system, and attachment mounting method - Google Patents

Description

  The present invention relates to a device for mounting an attachment, a mounting system including an attachment corresponding to the mounting device, and a method for mounting the attachment.

For example, a screw-type mount, bayonet-type mount, spigot type, or the like is generally used as a structure in which an optical component such as a lens barrel or a conversion lens can be attached to and detached from the camera body.
On the other hand, as an attachment for changing the focal length of a lens in an imaging apparatus such as a digital camera, a wide conversion lens and a teleconversion lens are known, and a fisheye lens and a 3D lens are provided as additional functions.
When these conversion lenses are attached to the imaging apparatus, focus control, image processing, or the like may need to be changed. For this reason, an imaging device is often provided with a mechanism for detecting whether or not a conversion lens is attached.
There are a mechanical method and an electrical method for detecting the wearing of the conversion lens.
As a mechanical method, there is a method in which when a conversion lens is attached to the imaging apparatus, a detection claw provided in the imaging apparatus is pressed.
As an electrical method, there is a method of automatically detecting the wearing of a telecon by detecting the occurrence of vignetting based on the luminance of pixels at the four corners of the imaging screen.

A method of mounting an interchangeable lens with a magnet in a camera is proposed in Patent Document 1.
Also, Patent Document 2 proposes a method of attaching attachments such as an interchangeable lens and various filters with a magnet in a mobile phone camera.

JP-A-8-227096 JP 2007-206137 A

  However, all of the conventional techniques are based on the premise that the entire optical unit (lens) is replaced from the camera body, and the body structure with the optical unit removed is not considered in appearance.

  The subject of this invention is making the external appearance property of an apparatus in the state which removed the attachment favorable.

  In order to solve the above problems, the present invention comprises a mounting hole for mounting an attachment containing a magnetic body, and a magnetic body for fixing the attachment mounted in the mounting hole, or has a built-in magnetic body. A hook that is movable in a direction intersecting the mounting direction, and an adsorbent that adsorbs the hook to the outside of the mounting hole, and when the attachment is not mounted in the mounting hole, While the hook is adsorbed to the outside of the attachment hole, the hook is adsorbed to the magnetic body built in the attachment in a state where the attachment is attached to the attachment hole, and the groove is formed in the attachment. An attachment mounting device with which the hook is engaged is characterized.

  ADVANTAGE OF THE INVENTION According to this invention, the external appearance property of the apparatus in the state which removed the attachment can be made favorable.

It is a perspective view which shows the structure of one Embodiment of the attachment mounting apparatus to which this invention is applied. It is a figure which shows mounting | wearing of the attachment with respect to the attachment mounting apparatus of FIG. The state which attached the attachment to the attachment mounting apparatus is shown, and it is a top view (a) and a side view (b) (c). The attachment detachable part with which an attachment mounting apparatus is provided is shown, the top view (a) of the state where the built-in part was hidden by the front case, the enlarged view (b) and the perspective view of the state where the built-in part can be seen through the front case ( c). The external structure of an attachment is shown, and it is a perspective view (a), a side view (b), and a bottom view (c). FIG. 6 is an enlarged view of a groove portion and a magnet portion in FIG. 5, and is a bottom view (a) and a cross-sectional view (b). The locking method at the time of mounting an attachment to an attachment mounting apparatus is demonstrated, The principal part top view (a) which shows a rotation direction, The figure (b) which shows a rotation process, The figure (c) of a locked state. It is an expansion perspective view which shows the relationship between the hook of an attachment mounting apparatus, and a detection switch. It is a principal part top view which shows the difference in the kind of groove part of an attachment, and is the figure (a) which shows the kind 1, the figure (b) which shows the kind 2, and the figure (c) which shows the kind 3.

DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments for carrying out the present invention will be described in detail with reference to the drawings.
(Embodiment)
FIG. 1 shows a camera 1 as an attachment mounting apparatus. A mounting hole 13 for mounting an attachment is formed around a lens 12 in a front case 11 of the camera 1 as shown in the figure.

  FIG. 2 shows the mounting of the conversion lens 2 as an attachment to the camera 1, and the mounting direction is indicated by an arrow.

Here, the camera 1 has a function as a camera even without a conversion lens, and has another optical function such as fisheye or 3D by wearing the conversion lens 2.
Therefore, the camera 1 has a finished appearance and shape that is a product even when the conversion lens 2 is not attached.

  FIG. 3 shows a state in which the conversion lens 2 is attached to the camera 1, FIG. 3 (a) is a plan view, and FIGS. 3 (b) and 3 (c) are side views.

  As shown in the drawing, the conversion lens 2 is covered with a case 21 around the lens 22.

  4 shows attachment / detachment parts provided in the camera 1, FIG. 4 (a) shows a state in which the built-in parts are hidden by the front case 11, and FIGS. 4 (b) and 4 (c) show the front case 11 as a watermark. The built-in parts are visible.

As shown in the drawing, a hook 14 that rotates around one end as a fulcrum is mounted around the mounting hole 13 inside the camera 1. The hook 14 is made of a magnetic material (such as iron or SUS) whose material is attracted to the magnet.
Furthermore, a magnet 15 that is a magnetic body as an adsorbent located outside the hook 14 is mounted inside the camera 1.
As a result, the hook 14 is normally attracted to and pulled by the outer magnet 15 with the shaft portion 141 at one end as a fulcrum, and is not visible from the exterior as shown in FIG. Yes.
In the illustrated example, three hooks 14 and three magnets 15 are mounted in pairs.

  FIG. 5 shows an external structure of the conversion lens 2, FIG. 5 (a) is a perspective view, FIG. 5 (b) is a side view, and FIG. 5 (c) is a bottom view.

  As shown in the drawing, the base end portion around the lens 22 of the case 21 of the conversion lens 2 is an insertion portion 23 that is inserted into the mounting hole 13 of the camera 1. On the outer periphery of the insertion portion 23, groove portions 24 are formed at three locations at equal intervals in the circumferential direction, and a magnet 25 that is a magnetic body is mounted so as to be paired with the groove portion 24 on the inner peripheral side. Yes.

  FIG. 6 is an enlarged view of the groove 24 and the magnet 25 described above. FIG. 6A is a bottom view and FIG. 6B is a cross-sectional view.

  FIG. 7 is a diagram for explaining a locking method when the conversion lens 2 is mounted on the camera 1.

Here, the relationship between the attractive force of the magnet 15 of the camera 1 and the magnet 25 of the conversion lens 2 is such that magnet 15 <magnet 25.
Note that the attractive force may be adjusted not only by the magnetic force of the magnet but also by the distance from the hook 14.

  Therefore, as shown by the arrow in FIG. 7A, when the insertion portion 23 of the conversion lens 2 is inserted into the mounting hole 13 of the camera 1 and abuts and rotates counterclockwise, the arrow in FIG. As shown in FIG. 7, the hook 14 of the camera 1 is attracted to the magnet 25 of the conversion lens 2 and is locked to engage with the groove portion 24 of the case 21 of the conversion lens 2 as shown in FIG.

  When the conversion lens 2 is removed, if it is rotated counterclockwise, the hook 14 is removed from the groove 24 and the state shown in FIG. 7A is restored, so that the lock is released.

Next, as shown in FIG. 8, one of the three hooks 14 mounted on the camera 1 has a projection 142 formed at the end opposite to the shaft 141.
The protrusion 142 is in a position where the detection switch 16 disposed in the vicinity of the hook 14 can be pressed.
The detection switch 16 can detect multiple stages.

Here, in the groove 24 of the case 21 of the conversion lens 2, as shown in FIGS. 9A, 9B, and 9C, the depth of the grooves 24a, 24b, and 24c depends on the types 1, 2, and 3 of the conversion lens 2. Are different.
Examples of the type of conversion lens 2 include type 1: fisheye lens, type 2: 3D lens, and type 3: macro lens.

  As described above, since the depths of the grooves 24a, 24b, and 24c are different depending on the types 1, 2, and 3 of the conversion lens 2, the amount of rotation with the shaft portion 141 of the hook 14 as a fulcrum changes, and the detection switch 16 by the projection 142 changes. The angle at which is pushed also changes, and the types 1, 2, and 3 of the conversion lens 2 can be specified based on the angle.

  In addition, a conversion lens is provided inside the camera 1 based on a detection signal of a detection switch 16 that detects a movement state of the hook 14 according to different groove shapes of the three types of grooves 24a, 24b, and 24c with which the hook 14 is engaged. A discriminating unit for discriminating between the two types 1, 2, and 3; and a control unit that performs control according to the types 1, 2, and 3 of the conversion lens 2 discriminated by the discriminating unit

  Therefore, since the rotation amount of the hook 14 of the camera 1 changes when the conversion lens 2 is mounted, the angle at which the detection switch 16 is pressed also changes, and the types 1, 2, and 3 of the mounted conversion lens 2 can be specified. .

As described above, it is possible to provide a coupling structure of the camera 1 and the conversion lens 2 in which the camera 1 and the conversion lens 2 can be easily attached and detached and can be coupled with high accuracy.
In addition, even when the conversion lens 2 is not attached, the camera 1 is not damaged in appearance, so that the product value is not impaired even when the camera 1 is used alone.

  Furthermore, since the types 1, 2, and 3 of the conversion lens 2 are determined by the movement of the structure itself that couples the conversion lens 2 to the camera 1, the number of parts is small, and the appearance of the camera 1 when the conversion lens 2 is not mounted is obtained. There is no damage.

(Modification)
In the embodiment, the hook 14 is attracted by the magnet 15, but the hook 14 may be attracted by a spring instead of the magnet 15.
In this case, the spring sets the attracting force that attracts the hook 14 to be weaker than the magnet 25 built in the conversion lens 2.
In this way, if the adsorbent is a spring, the electronic component built in the camera 1 is not adversely affected by the magnetic force, and the cost can be reduced.

In the embodiment, the hook 14 made of a magnetic material is used. However, the hook 14 may have a built-in magnetic material.
Further, the relationship between the magnet and the magnetic body may be reversed from that in the embodiment.
Furthermore, if it is not necessary to determine the type of the conversion lens 2, it is not necessary to rotate it after insertion.

(Other variations)
In the above embodiment, the camera is used. However, the present invention is not limited to this, and may be another electronic device such as a mobile phone including the camera.
Furthermore, in the embodiment, the conversion lens is used, but other attachments such as a filter may be used.

Further, in the embodiment, the hook and the adsorbent are provided in the attachment mounting device and the groove portion is formed in the attachment. Conversely, the hook and the adsorbing material may be provided in the attachment and the groove portion may be formed in the attachment mounting device. .
Further, the shape of the hook, the adsorbent, the groove, etc. is arbitrary, and it is needless to say that the specific detailed structure can be appropriately changed.

As mentioned above, although several embodiment of this invention was described, the scope of the present invention is not limited to the above-mentioned embodiment, The range of the invention described in the claim, and its equivalent range Including.
The invention described in the scope of claims attached to the application of this application will be added below.
The item numbers of the claims described in the appendix are as set forth in the claims attached to the application of this application.
[Appendix]
<Claim 1>
A mounting hole for mounting an attachment containing a magnetic material;
A hook made of a magnetic body for fixing the attachment mounted in the mounting hole or having a built-in magnetic body and movable in a direction crossing the mounting direction of the attachment;
An adsorbent that adsorbs the hook to the outside of the mounting hole,
In a state where the attachment is not attached to the attachment hole, the hook is adsorbed to the outside of the attachment hole by the adsorbent,
In the state where the attachment is mounted in the mounting hole, the hook is attracted to a magnetic body built in the attachment, and the hook is engaged with a groove formed in the attachment. apparatus.
<Claim 2>
The attachment device according to claim 1, wherein the adsorbent is a magnetic body.
<Claim 3>
3. The attachment mounting apparatus according to claim 2, wherein the magnetic material of the adsorbent has a lower magnetic force for adsorbing the hook than the magnetic material incorporated in the attachment.
<Claim 4>
The attachment mounting apparatus according to claim 1, wherein the adsorbent is a spring.
<Claim 5>
The attachment mounting apparatus according to claim 4, wherein the spring has a weaker attracting force for attracting the hook than a magnetic body built in the attachment.
<Claim 6>
2. The attachment mounting apparatus according to claim 1, wherein when the attachment is inserted into the mounting hole and the attachment is rotated in a direction intersecting the insertion direction, the hook is engaged with the groove.
<Claim 7>
A discriminating means for discriminating a type of the attachment based on a moving state according to a different groove shape of the groove portion of the hook engaged with the groove portion;
The attachment mounting apparatus according to claim 6, further comprising a control unit that performs control according to the type of the attachment determined by the determination unit.
<Claim 8>
The attachment mounting device is a housing having an imaging means,
The attachment attachment apparatus according to any one of claims 1 to 7, wherein the attachment is a conversion lens or a filter.
<Claim 9>
The attachment mounting device according to any one of claims 1 to 8,
An attachment mounting system comprising: an attachment having a built-in magnetic body that adsorbs the hook in the vicinity of a mounting surface with the attachment mounting device.
<Claim 10>
The groove part formed in the said attachment by inserting an attachment in the said attachment hole of the attachment mounting apparatus as described in any one of Claim 1 to 8, and making the said hook adsorb | suck to the magnetic body incorporated in the said attachment. An attachment mounting method, wherein the hook is engaged with the attachment mounting device to hold the attachment in a mounted state.
<Claim 11>
In the mounting state of the attachment with respect to the attachment mounting device,
The attachment mounting method according to claim 10, wherein the hook is detached from the groove portion by rotating the attachment with respect to the mounting hole.

DESCRIPTION OF SYMBOLS 1 Camera 13 Mounting hole 14 Hook 141 Shaft part 142 Projection part 15 Magnet 16 Detection switch 2 Conversion lens 23 Insertion part 24 Groove part 25 Magnet

Claims (11)

A mounting hole for mounting an attachment containing a magnetic material;
A hook made of a magnetic body for fixing the attachment mounted in the mounting hole or having a built-in magnetic body and movable in a direction crossing the mounting direction of the attachment;
An adsorbent that adsorbs the hook to the outside of the mounting hole,
In a state where the attachment is not attached to the attachment hole, the hook is adsorbed to the outside of the attachment hole by the adsorbent,
In the state where the attachment is mounted in the mounting hole, the hook is attracted to a magnetic body built in the attachment, and the hook is engaged with a groove formed in the attachment. apparatus.   The attachment device according to claim 1, wherein the adsorbent is a magnetic body.   3. The attachment mounting apparatus according to claim 2, wherein the magnetic material of the adsorbent has a lower magnetic force for adsorbing the hook than the magnetic material incorporated in the attachment.   The attachment mounting apparatus according to claim 1, wherein the adsorbent is a spring.   The attachment mounting apparatus according to claim 4, wherein the spring has a weaker attracting force for attracting the hook than a magnetic body built in the attachment.   2. The attachment mounting apparatus according to claim 1, wherein when the attachment is inserted into the mounting hole and the attachment is rotated in a direction intersecting the insertion direction, the hook is engaged with the groove. A discriminating means for discriminating a type of the attachment based on a moving state according to a different groove shape of the groove portion of the hook engaged with the groove portion;
The attachment mounting apparatus according to claim 6, further comprising a control unit that performs control according to the type of the attachment determined by the determination unit. The attachment mounting device is a housing having an imaging means,
The attachment attachment apparatus according to any one of claims 1 to 7, wherein the attachment is a conversion lens or a filter. The attachment mounting device according to any one of claims 1 to 8,
An attachment mounting system comprising: an attachment having a built-in magnetic body that adsorbs the hook in the vicinity of a mounting surface with the attachment mounting device.   The groove part formed in the said attachment by inserting an attachment in the said attachment hole of the attachment mounting apparatus as described in any one of Claim 1 to 8, and making the said hook adsorb | suck to the magnetic body incorporated in the said attachment. An attachment mounting method, wherein the hook is engaged with the attachment mounting device to hold the attachment in a mounted state. In the mounting state of the attachment with respect to the attachment mounting device,
The attachment mounting method according to claim 10, wherein the hook is detached from the groove portion by rotating the attachment with respect to the mounting hole.

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