JP5821405B2 - Attachment, attachment mounting system, and attachment mounting method - Google Patents

Description

  The present invention relates to an attachment to be mounted on a camera or the like, a mounting system for the attachment, and a mounting method.

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 camera, a wide conversion lens and a teleconversion lens are known, and a fisheye lens and a 3D lens are provided as additional functions.

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, and the main body structure with the optical unit removed is not considered in appearance.

The screw-type mount needs to rotate the screw when attaching and detaching, and is not a structure that can be easily attached and detached with one touch.
In addition, the bayonet mount has a notch for attaching the conversion lens to the main camera, which gives a great impression on the design of the main camera when the conversion lens is removed.
In addition, the magnet mount is strong against a load that pulls the magnet in the vertical direction with respect to the camera, but weak in the direction of peeling off at an angle, and can be easily detached even with a light impact.

  An object of the present invention is to easily attach and detach an attachment to and from the apparatus main body, and to prevent the attachment from being easily detached when attached to the apparatus main body, and to improve the appearance of the apparatus main body.

In order to solve the above-described problems, the present invention is an attachment that is used by being mounted on an apparatus main body, and is formed by a single metal wire having elasticity, and has a substantially annular portion obtained by bending the metal wire. And a button that is connected to an end of the linear spring and elastically deforms the linear spring when pressed, and the linear spring is elastically deformed by pressing the button. The annular protrusion provided in the apparatus main body is allowed to pass through the inside of the substantially annular portion of the linear spring that is in a state of spreading due to elastic deformation, while the linear spring does not press the button. In a state in which the attachment is not elastically deformed, a substantially annular portion of the linear spring that is not spread is engaged with a groove formed in the annular protrusion, and the attachment is attached to the apparatus main body. Be held in Further features, the present invention provides a attachment designed to be installed in the apparatus main body, is formed by a single metal wire having elasticity, a linear spring having a substantially annular portion by bending the metal wire provided, when mounting push the attachment to the device body, the device is formed in an annular projection provided in the main body and the substantially annular portion of the linear spring is widened by the slope extending in the pushing direction From the engagement, the substantially annular portion that is bent corresponding to the annular groove that continues through the inclined surface that narrows in the subsequent pushing direction is engaged, and the attachment is held in a state of being attached to the apparatus main body, pulling the attachment from the apparatus main body, it is spread the substantially annular portion with inclined surface which narrows from the groove in the push-in direction, the attachment Characterized in that makes it possible to deviate from the apparatus main body.

According to the present invention, the attachment can be easily attached to the apparatus main body, and the attachment does not easily come off when attached to the apparatus main body.
Moreover, the attachment can be easily removed, and the appearance of the apparatus main body with the attachment removed can be improved.

BRIEF DESCRIPTION OF THE DRAWINGS The structure of one Embodiment which mounted | wore the apparatus main body with the attachment to which this invention is applied is shown, a perspective view (a), a top view (b), the side view (c), the side view (d) turned upside down It is. FIG. 2 is an exploded view of FIG. They are the perspective view which looked at the attachment from the bottom, the figure (a) which showed the normal state of a linear spring, and the figure (b) which showed the lock release state of the linear spring. It is a disassembled perspective view of the case of an attachment, a linear spring, and a button. It is a top view of the state which incorporated the linear spring and button in the case. It is a disassembled perspective view of a case incorporating a linear spring and a button, a lid, and a screw. The normal state of a linear spring is enlarged and shown in a plan view (a), a side view (b), and a bottom view (c). It is an enlarged view of the elastic deformation state of the linear spring, and is a plan view (a), a side view (b) and a bottom view (c). It is the top view (a) of the normal state of Fig.3 (a), the center longitudinal cross-sectional view (b), and the enlarged view (c) of the linear spring incorporating part. It is a center longitudinal cross-sectional view of the lock release state of FIG.3 (b). The central longitudinal cross-sectional view showing the process of attaching the attachment to the apparatus main body in a cross section parallel to the linear spring, with the case guided by the protrusion of the apparatus main body (a), and then the linear spring is inclined (B) of the state which began to be elastically deformed by this, and (c) of the state which the linear spring engaged with the groove | channel subsequently. The center longitudinal cross-sectional view which showed the process which attaches an attachment to an apparatus main body with the cross section orthogonal to a linear spring, (a) of the state where a case is guided to the protrusion of an apparatus main body, and then a linear spring is a slope (B) of the state which began to be elastically deformed by this, and (c) of the state which the linear spring engaged with the groove | channel subsequently.

DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments for carrying out the present invention will be described in detail with reference to the drawings.
(Embodiment)
FIGS. 1A to 1D show a state in which a conversion lens 2 as an attachment is attached to a camera 1 as an apparatus main body.

As shown in FIG. 2, the front case 11 of the camera 1 is formed with a mounting groove 13 for mounting an attachment around the lens 12. An annular protrusion 14 is formed on the inner periphery of the mounting groove 13.
The annular protrusion 14 is formed with an annular slope 15 extending along the mounting direction indicated by an arrow at the tip, and a small-diameter annular groove 16 is formed following the annular slope 15 (FIGS. 11 and 11). 12).

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.

As shown, the conversion lens 2 is covered with a case 21 around the lens 22.
Further, the lock release button 3 is assembled on the outer periphery of the case 21.

FIG. 3 is a view of the conversion lens 2 as viewed from the bottom, and a base end portion around the lens 22 of the case 21 is an insertion portion 23 to be inserted into the mounting groove 13 of the camera 1.
A linear spring 4 is incorporated on the bottom surface side of the conversion lens 2.
As shown in FIGS. 4 to 7, the linear spring 4 is formed by bending one elastic metal wire to form a substantially annular portion 41 corresponding to the annular protrusion 14 of the camera 1 at the center. It is a thing.

The substantially annular portion 41 of the linear spring 4 has substantially the same curvature as the annular groove 16 of the annular protrusion 14 and one end portion of the linear spring 4 (in the illustrated example, one metal wire is bent) The lock release button 3 is integrally assembled to the abutting end).

FIG. 4 is an exploded view of the case 21 of the conversion lens 2, the linear spring 4 and the lock release button 3. As shown in FIG. 5, the linear spring 4 is in a state where tension is applied to the free length. It is incorporated in a notch formed in the insertion portion 23.
Thereafter, as shown in FIG. 6, the lid 5 is screwed around the insertion portion 23 of the case 21.

The above linear spring 4 fixes the conversion lens 2 to the camera 1 by fitting the substantially annular portion 41 into the annular groove 16 of the annular protrusion 14 of the camera 1.
When the unlock button 3 is pressed, the substantially annular portion 41 of the linear spring 4 expands in a direction perpendicular to the pushing direction of the unlock button 3, so that the approximately annular portion 41 is removed from the annular groove 16, and the camera 1. The conversion lens 2 can be removed.

  FIGS. 7A to 7C are enlarged views of the normal state of the linear spring 4, and when a load in the compression direction is applied to the linear spring 4 in the longitudinal direction indicated by an arrow, it is shown in FIG. As described above, the substantially annular portion 41 is elastically deformed and spreads in the lateral direction, and at the same time, elastic deformation in the plane direction occurs.

  FIGS. 3A and 9A to 9C show a normal state in which the unlock button 3 is not pressed. When the unlock button 3 is pressed, as shown in FIGS. 3B and 10. Further, the substantially annular portion 41 of the linear spring 4 is elastically deformed and spreads in the lateral direction.

  Next, attachment of the conversion lens 2 to the camera 1 will be described.

  When the conversion lens 2 is attached to the camera 1, the inner periphery of the insertion portion 23 of the case 21 is positioned as a guide with respect to the annular protrusion 14, and the conversion lens 2 is pushed in, so that FIG. As shown in FIG. 12A, the conversion lens 2 is incorporated straight in the vertical direction with respect to the camera 1.

  Then, as shown in FIGS. 11 (b) and 12 (b), the substantially annular portion 41 of the linear spring 4 is elastically brought into contact with the annular inclined surface 15 extending along the mounting direction of the tip of the annular protrusion 14. Deformed and spread outward.

  When the conversion lens 2 is pushed in as it is, the substantially annular portion 41 of the linear spring 4 is elastically deformed into a small-diameter annular groove 16 that continues to the annular inclined surface 15 as shown in FIGS. 11 (c) and 12 (c). The conversion lens 2 is coupled to the camera 1 by the return force due to.

  Thus, in a state where the conversion lens 2 is coupled to the camera 1, the substantially annular portion 41 of the linear spring 4 is pushed outward by the annular inclined surface 15 at the tip of the annular protrusion 14 rather than being assembled into the case 21. In the small-diameter annular groove 16, the tension is applied by the force returning to the inner side of the substantially annular portion 41, so that the conversion lens 2 is held in a state in which it is difficult to come off.

Further, in the annular groove 16, the substantially annular portion 41 of the linear spring 4 is elastically deformed to the upper side in the vertical direction and tension is applied, so that the vertical play of the conversion lens 2 can be suppressed.
As described above, the conversion lens 2 attached to the camera 1 is not rotatable and is difficult to come off.

  When the conversion lens 2 is removed, when the lock release button 3 is pressed, the substantially annular portion 41 of the linear spring 4 is elastically deformed and spreads outward, passes through the annular protrusion 14 of the camera 1 and is converted as it is. The lens 2 can be pulled out.

  Thus, by incorporating the linear spring 4 and the unlock button 3 into the conversion lens 2, the conversion lens 2 can be attached to and detached from the camera 1 with a single touch.

That is, the conversion lens 2 can be attached simply by pushing it into the camera 1.
Then, by simply pulling the conversion lens 2 while pressing the lock release button 3, it can be easily removed from the camera 1.

  Moreover, when the conversion lens 2 is attached to the camera 1, the substantially annular portion 41 of the linear spring 4 is fitted in the annular groove 16. There is no such thing as easy removal.

  Further, since the camera 1 does not affect the design even when the conversion lens 2 is removed, the product value is not impaired even when used alone.

(Modification 1)
In the above embodiment, the linear spring 4 may be processed to prevent slippage of the substantially annular portion 41 that fits into at least the annular groove 16.

  In this way, if at least the substantially annular portion 41 of the linear spring 4 is slip-processed, the conversion lens 2 is further attached to the camera 1 by the anti-slip action on the annular groove 16 into which the substantially annular portion 41 is fitted. Can be firmly fixed.

(Modification 2)
In the embodiment described above, the lock release buttons 3 may be provided at both ends of the linear spring 4.

  In this way, if the lock release buttons 3 are provided at both ends of the linear spring 4, it is possible to release the lock of the conversion lens 2 with respect to the camera 1 by pressing the two lock release buttons 3 with a weaker operating force. it can.

(Modification 3)
In the above-described embodiment, the lock release button 3 may not be provided, and the elasticity of the linear spring 4 may be used to disengage from the annular protrusion 14.
In that case, an annular slope narrowing along the mounting direction is formed between the annular slope 15 and the annular groove 16 extending along the mounting direction of the annular protrusion 14 of the camera 1.

  In this manner, if an annular slope that narrows in the mounting direction is formed between the annular slope 15 that extends in the mounting direction of the annular protrusion 14 of the camera 1 and the annular groove 16, even if the lock release button 3 is not provided, The conversion lens 2 can be removed from the camera 1.

  That is, when the conversion lens 2 attached to the camera 1 is pulled, the substantially annular portion 41 of the linear spring 4 is elastically deformed and pushed out by the inclined surface narrowing from the annular groove 16 in the attaching direction. The conversion lens 2 can be removed from the camera 1 by detaching from the protrusion 14.

  In addition, since there is no need for a button, the linear spring 4 may have a continuous shape by an integrally molded product that does not have a butt end portion obtained by bending one metal wire.

(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.

In the embodiment, the linear spring and the button are built in the attachment side, but the linear spring and the button may be built in the apparatus main body. Then, the attachment can be made small and cheap.
Furthermore, the shape of the linear spring, the button, and the like are arbitrary, and it is needless to say that other specific detailed structures 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>
An attachment to be used by attaching to the device body,
A linear spring formed of a metal wire having elasticity;
A button connected to an end of the linear spring and elastically deforming the linear spring by pressing;
In a state in which the linear spring is elastically deformed by pressing the button, the elastic deformation portion of the linear spring can pass through an annular protrusion provided in the apparatus main body,
In a state where the linear spring is not elastically deformed without pressing the button, the linear spring is engaged with a groove formed in the projecting portion, and the attachment is held in a state of being attached to the apparatus main body. Attachment characterized by being made.
<Claim 2>
The linear spring has a substantially annular portion obtained by bending the metal wire so as to correspond to the groove,
In a state where the substantially annular portion is expanded by elastic deformation by pressing the button, the substantially annular portion can pass through the protrusion,
The attachment according to claim 1, wherein the substantially annular portion is engaged with the groove in a state where the substantially annular portion is not expanded without pressing the button.
<Claim 3>
When the attachment is attached to the apparatus body, the linear spring is engaged with the groove after the linear spring is pushed and spread by an inclined surface formed in the protrusion and extending in the attachment direction. The attachment according to claim 1.
<Claim 4>
2. The attachment according to claim 1, wherein in a state where the linear spring is engaged with the groove, the linear spring is pressure-bonded to the groove with a strength at which the attachment cannot rotate.
<Claim 5>
The attachment according to claim 4, wherein in the state where the linear spring is engaged with the groove, the curvature of the groove and the linear spring are substantially the same.
<Claim 6>
The attachment according to claim 1, wherein a portion that comes into contact with the linear spring when engaged with the groove is anti-slip processed.
<Claim 7>
The attachment according to claim 1, wherein the button is provided at both ends of the linear spring.
<Claim 8>
An attachment to be used by attaching to the device body,
A linear spring formed of a metal wire having elasticity, and having a substantially annular portion obtained by bending the metal wire;
When the attachment is attached to the apparatus main body, the substantially annular portion of the linear spring is formed by a slope formed in the protrusion provided in the apparatus main body and spreads in the attachment direction, and then in the subsequent attachment direction. While the substantially annular portion bent to correspond to the annular groove that continues through the narrowing slope is engaged, the attachment is held attached to the apparatus main body,
When the attachment is pulled from the apparatus main body, the substantially annular portion is pushed out by a slope narrowing in the mounting direction from the groove, and the attachment can be detached from the apparatus main body.
<Claim 9>
The device body is an imaging device,
The attachment according to any one of claims 1 to 8, wherein the attachment is a conversion lens or a filter.
<Claim 10>
The attachment according to any one of claims 1 to 9,
An attachment mounting system comprising: an apparatus main body provided with a protrusion having a groove with which the linear spring engages.
<Claim 11>
The apparatus main body includes an imaging unit having a lens capable of imaging even when the attachment is not attached,
The attachment mounting system according to claim 10, wherein the attachment mounting system is a housing of an imaging apparatus capable of changing optical characteristics of the lens by mounting the attachment.
<Claim 12>
The attachment according to any one of claims 1 to 7 is overlaid on the protrusion of the apparatus main body, the linear spring is engaged with the groove, and the attachment is held in the apparatus main body. An attachment mounting method characterized by the above.
<Claim 13>
In the attachment state of the attachment to the device body,
13. The attachment is detached from the apparatus main body by pressing the button and pulling the attachment with respect to the apparatus main body so that the protrusion passes through the elastically deforming portion of the linear spring. Attachment attachment method as described in 4.
<Claim 14>
The attachment according to claim 8 is overlaid on the projection of the apparatus main body, and the substantially annular portion of the linear spring is pushed and widened by the slope extending in the mounting direction, and then passes through the slope narrowing in the mounting direction. An attachment mounting method, wherein the substantially annular portion engages with the groove to hold the attachment in a mounted state on the apparatus main body.

DESCRIPTION OF SYMBOLS 1 Camera 13 Mounting groove 14 Annular protrusion 15 Annular slope 16 Engagement groove 2 Conversion lens 23 Insertion part 3 Lock release button 4 Linear spring 41 Substantially annular part 5 Lid

Claims (14)

An attachment to be used by attaching to the device body,
Is formed by a single metal wire having elasticity, a linear spring that having a substantially annular portion by bending the metal wire,
A button connected to an end of the linear spring and elastically deforming the linear spring by pressing;
When the linear spring is elastically deformed by pressing the button, the inside of the substantially annular portion of the linear spring passing through the annular protrusion provided in the apparatus main body is passed through the elastic deformation. While allowing
In a state where the linear spring is not elastically deformed without pressing the button, the substantially annular portion of the linear spring that is not spread is engaged with the groove formed in the annular protrusion. The attachment is held in a state of being attached to the apparatus main body. The end of the linear spring to which the button is connected is connected to a butt end obtained by bending the one metal wire, and the other end facing the end is fixed. The attachment according to claim 1, wherein the linear spring is elastically deformed by being pushed. When the attachment is pushed into the apparatus main body and mounted , the substantially annular portion of the linear spring is formed by the inclined surface that is formed in the annular protrusion and spreads in the mounting direction, and then the linear shape is inserted into the groove. the attachment according to claim 1 or 2 springs, characterized in that the engagement. In a state where the linear spring in the groove is engaged, claim 1 in which the attachment is characterized in that substantially annular portion of the linear spring in a strong non-rotatable is is crimped into the groove 4. The attachment according to any one of 3 . The curvature of the said substantially annular part of the said groove | channel and the said linear spring is substantially corresponded in the state which the substantially annular part of the said linear spring is engaging with the said groove | channel. attachment. The attachment according to any one of claims 1 to 3, wherein a portion that comes into contact with the substantially annular portion of the linear spring when engaged with the groove is anti-slip processed.   The attachment according to claim 1, wherein the button is provided at both ends of the linear spring. An attachment to be used by attaching to the device body,
A linear spring formed of a single metal wire having elasticity and having a substantially annular portion formed by bending the metal wire;
When the attachment is pushed into the apparatus main body and attached, the annular protrusion formed in the apparatus main body is formed, and after the substantially annular portion of the linear spring is expanded by the inclined surface extending in the pushing direction, While the substantially annular portion bent to correspond to the annular groove that passes through the slope that narrows in the subsequent pushing direction is engaged, the attachment is held in the state of being attached to the apparatus body,
When the attachment is pulled from the apparatus main body, the substantially annular portion is expanded by an inclined surface that narrows in the pushing direction from the groove, and the attachment can be detached from the apparatus main body. The device body is an imaging device,
The attachment according to any one of claims 1 to 8, wherein the attachment is a conversion lens or a filter. The attachment according to any one of claims 1 to 9,
An attachment body system comprising: an apparatus main body provided with an annular protrusion having a groove with which the substantially annular portion of the linear spring engages. The apparatus main body includes an imaging unit having a lens capable of imaging even when the attachment is not attached,
The attachment mounting system according to claim 10, wherein the attachment mounting system is a housing of an imaging apparatus capable of changing optical characteristics of the lens by mounting the attachment. The apparatus main body engages the substantially annular portion of the linear spring with the groove by overlappingly pushing the attachment according to claim 1 into the annular protrusion of the device main body. And holding the attachment in a mounted state. In the attachment state of the attachment to the device body,
By pulling the attachment with respect to the device main body while pressing the button, the annular protrusion passes through the inside of the substantially annular portion of the linear spring that is spread by elastic deformation , and the device The attachment mounting method according to claim 12, wherein the attachment is detached from a main body. The attachment according to claim 8 is overlapped and pushed into the annular projecting portion of the apparatus main body so that the substantially annular portion of the linear spring is pushed and expanded by the inclined surface spreading in the attachment direction, and then the attachment direction. An attachment mounting method, wherein the substantially annular portion engages with the groove through a narrowed slope to hold the attachment in a mounted state on the apparatus main body.

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