JP3194021U - Lens barrel protective cap - Google Patents

Abstract

Provided is a lens barrel protective cap that provides a constant feeling of wearing regardless of the presence or type of a lens accessory member. A cap main body 11 having a main body bottom surface portion 11a and a main body peripheral surface portion 11b, a bottom surface abutting on the main body bottom surface portion 11a, and an outer peripheral surface abutting on a bottom inner peripheral surface of the main body peripheral surface portion 11b. A ring member 12 having a ring peripheral surface portion 12b fixed in the cap main body 11 and having a length in the thrust direction shorter than that of the main body peripheral surface portion 11b. The front end surface 12b1 of the ring peripheral surface portion 12b is the front end of the lens barrel 20. The lens barrel protective cap 10 is in contact with the peripheral edge portion 20a1 of the surface 20a, the main body bottom surface portion 11a covers the tip surface 20a in a non-contact manner, and the main body peripheral surface portion 11b contacts and covers the outer peripheral surface of the lens barrel 20. . [Selection] Figure 1

Description

  The present invention relates to a lens barrel protective cap for covering and protecting a lens barrel.

  Various lens barrel protection caps for covering and protecting the lens barrel of a camera have been proposed.

  As a lens barrel protective cap, for example, a leather lens barrel protective cap made by molding leather (including artificial leather) has been commercialized. Such a leather lens barrel protective cap has a high-class feeling and excellent fashionability.

  This lens barrel protective cap generally has a bottomed cylindrical shape including a bottom surface that protects the distal end surface of the lens barrel and a circumferential surface that protects at least the distal end side of the outer peripheral surface of the lens barrel. More specifically, the opening side has a truncated cone shape slightly smaller in diameter than the bottom surface side so as not to be naturally detached from the lens barrel. The lens barrel protective cap is mounted on the lens barrel by moving in the thrust direction with the opening side facing the tip of the lens barrel. At this time, the amount of attaching / detaching force is generated by the fitting of the inner peripheral surface of the lens barrel protection cap and the outer peripheral surface of the lens barrel, giving the user a suitable wearing feeling.

  By the way, the interchangeable lens barrel of the single-lens camera is provided with a female screw on the inner peripheral surface of the barrel main body in the vicinity of the first lens disposed at the tip, and a lens filter, a lens cap ( In many cases, a lens barrier that protects the surface of the first lens disposed at the tip of the lens barrel and a lens barrier that automatically opens and closes (hereinafter referred to as a lens accessory member) are mounted.

  When such a lens accessory member is already attached to the lens barrel, it is troublesome to remove the lens accessory member when attaching the lens barrel protective cap. It is preferable that a lens barrel protection cap is attached to the cylinder.

  However, when the lens accessory member is attached or not attached, the attachment position of the lens barrel protection cap with respect to the lens barrel changes by the length in the thrust direction of the lens accessory member. Ability changes, and a feeling of wearing will be spoiled.

  The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a lens barrel protective cap that can give a certain feeling of wearing regardless of the presence or type of a lens accessory member.

  A lens barrel protection cap according to an aspect of the present invention is a lens barrel protection cap for covering and protecting a lens barrel. The lens barrel protection cap is formed on the bottom surface of the main body from the bottom surface of the main body and the periphery of the bottom surface of the main body. A main body peripheral surface portion erected in a vertical thrust direction; a bottom surface abutting on the main body bottom surface portion; and an outer peripheral surface abutting on a bottom inner peripheral surface of the main body peripheral surface portion. A ring member having a ring peripheral surface portion fixed in the cap main body and having a length in the thrust direction shorter than that of the main body peripheral surface portion, and a front end surface of the ring peripheral surface portion is a peripheral portion of a front end surface of the lens barrel The main body bottom surface portion covers the tip end surface of the lens barrel in a non-contact manner, and the main body peripheral surface portion contacts the outer peripheral surface of the lens barrel and covers the outer peripheral surface of the lens barrel .

  According to the lens barrel protective cap of the present invention, it is possible to give a certain wearing feeling regardless of the presence or type of the lens accessory member.

In Embodiment 1 of this invention, the figure which shows the mode of the lens-barrel protective cap with which the lens barrel with which the lens barrier was attached was mounted | worn. In the said Embodiment 1, the figure which shows the mode of the lens-barrel protective cap with which the lens barrel to which the lens cap was attached was mounted | worn. In the said Embodiment 1, the figure which shows the mode of the lens-barrel protective cap with which the lens barrel to which the lens filter was attached was mounted | worn. In Embodiment 2 of this invention, the figure which shows the mode of the lens-barrel protective cap with which the lens barrel with which the lens barrier was attached was mounted | worn.

Embodiments of the present invention will be described below with reference to the drawings.
[Embodiment 1]

  FIGS. 1 to 3 show Embodiment 1 of the present invention, and FIG. 1 is a view showing a state of a lens barrel protective cap 10 attached to a lens barrel 20 to which a lens barrier 30 is attached. FIG. 2 is a diagram showing a state of the lens barrel protection cap 10 attached to the lens barrel 20 to which the lens cap 40 is attached, and FIG. 3 is attached to the lens barrel 20 to which the lens filter 50 is attached. FIG. 2 is a diagram illustrating a state of a lens barrel protection cap 10.

  First, the lens barrel 20 is assumed to be a lens barrel that is replaceably attached to a single-lens camera (single-lens reflex camera, single-lens mirrorless camera, etc.), for example, but a lens mirror fixed to the camera body. It may be a cylinder.

  Such a lens barrel 20 generally incorporates an optical system in which a plurality of lenses are combined. However, an internal thread is provided on the inner peripheral surface of the barrel main body in the vicinity of the first lens disposed at the most distal end. It has been.

  Then, with respect to the female screw at the tip of the lens barrel, an automatic opening / closing lens barrier 30 as shown in FIG. 1, a lens cap 40 as shown in FIG. 2, a lens filter 50 as shown in FIG. A lens accessory member) is detachably mounted.

  Here, the lens barrier 30 is, for example, a type of barrier in which a plurality of blades are automatically opened and closed in conjunction with a camera power source.

  The lens cap 40 protects the first lens of the lens barrel 20 from being exposed to the outside by being attached to the female screw at the tip of the barrel, and is formed of a material such as plastic or metal. Has been.

  Further, the lens filter 50 includes various optical filters such as a protection filter for protecting the first lens, a UV cut filter for cutting ultraviolet rays, a polarization filter used for removing reflected light, an ND filter for reducing the amount of light, and the like. is there.

  The lens barrel protective cap 10 can be detachably attached to the lens barrel 20 to which such a lens accessory member is attached or to the lens barrel 20 to which no lens accessory member is attached.

  The lens barrel protection cap 10 is for covering and protecting the lens barrel 20 and includes a cap body 11 and a ring member 12.

  The cap main body 11 includes a circular main body bottom surface portion 11a, and a cylindrical main body peripheral surface portion 11b erected in the thrust direction perpendicular to the main body bottom surface portion 11a from the periphery of the main body bottom surface portion 11a. . Here, the body peripheral surface portion 11b has a truncated cone shape whose opening side is slightly smaller in diameter than the bottom surface side, for example, so that the lens barrel protection cap 10 does not naturally come off from the lens barrel 20. The cap body 11 maintains its shape if there is no stress, but is formed of a material that can be deformed when stress is applied. As a suitable example, molded leather (including artificial leather) is used. It is comprised by.

  The ring member 12 is fixed in the cap main body 11 described above. In the configuration example of the present embodiment, a circular ring bottom surface portion 12a that abuts on the main body bottom surface portion 11a, and the ring. Standing in the thrust direction from the peripheral edge of the bottom surface portion 12a, the bottom surface is in contact with the main body bottom surface portion 11a integrally with the ring bottom surface portion 12a, and the bottom inner peripheral surface (the inner peripheral surface on the bottom surface side) of the main body peripheral surface portion 11b. And a short cylindrical ring peripheral surface portion 12b with which the outer peripheral surface abuts.

  Here, the length in the thrust direction of the ring peripheral surface portion 12b is shorter than the length in the thrust direction of the main body peripheral surface portion 11b. However, the lens accessory member (that is, the lens barrier 30, the lens cap 40, and the lens filter) described above is used. 50) is formed longer than the length in the thrust direction protruding from the front end surface of the lens barrel 20 when the lens barrel 20 is attached. Furthermore, the inner diameter of the ring peripheral surface portion 12b is formed to be larger than the outer diameter of the lens accessory member. That is, the thrust direction length and the inner diameter of the ring peripheral surface portion 12b are longer / larger than the thrust direction length and the outer diameter protruding from the front end surface of the lens barrel 20 of the lens accessory member that is often used. Designed.

  The ring member 12 is made of a rigid material, and the outer peripheral surface of the ring peripheral surface portion 12b is fitted and fixed to the bottom inner peripheral surface of the main body peripheral surface portion 11b. Thereby, the ring peripheral surface part 12b prescribes | regulates the shape of the bottom face side of the main body peripheral surface part 11b, and the shape of the main body peripheral surface part 11b is hold | maintained in a fixed range.

  Thus, in order to stabilize the shape of the main body peripheral surface portion 11b, the lens barrel protection cap 10 is moved in the thrust direction with the opening side of the lens barrel protection cap 10 facing the tip of the lens barrel 20, and the lens When attaching to the lens barrel 20, the amount of detachment force generated by fitting the inner peripheral surface of the main body peripheral surface portion 11b where the ring peripheral surface portion 12b is not disposed to the outer peripheral surface of the lens barrel 20 is maintained constant. .

  When the front end surface 12b1 of the ring peripheral surface portion 12b comes into contact with the peripheral portion 20a1 of the front end surface 20a of the lens barrel 20, the movement of the lens barrel protection cap 10 in the thrust direction with respect to the lens barrel 20 is stopped, and the lens The mounting of the lens barrel protection cap 10 is completed.

  At this time, the main body bottom surface portion 11a and the ring bottom surface portion 12a cover the front end surface 20a of the lens barrel 20 in a non-contact manner, and the main body peripheral surface portion 11b contacts at least the front end side of the outer peripheral surface of the lens barrel 20 The outer peripheral surface of the cylinder 20 is covered.

  In addition, when the lens accessory member is attached to the lens barrel 20, the ring member 12 further covers the lens accessory member in a non-contact manner, and the lens barrel protection cap 10 further non-contacts the lens accessory member. To coat.

  According to the first embodiment, the position where the front end surface 12b1 of the ring peripheral surface portion 12b is in contact with the peripheral edge portion 20a1 of the front end surface 20a of the lens barrel 20 is the mounting position of the lens barrel protection cap 10. In addition, the lens barrel 20 is always inserted into the lens barrel protection cap 10 up to a certain insertion position, and a certain wearing feeling can be given to the user.

  Further, the thrust peripheral length of the ring peripheral surface portion 12b is longer than the thrust direction length of the lens accessory member protruding from the front end surface of the lens barrel 20, and the inner diameter of the ring peripheral surface portion 12b is the outer diameter of the lens accessory member. Since the ring member 12 is formed to be larger than the ring member 12, the ring member 12 covers the lens accessory member in a non-contact manner. Thus, when the lens barrel protection cap 10 is attached to and detached from the lens barrel 20, the lens accessory member is not in contact with the lens barrel protection cap 10, so that it is always constant regardless of the presence or type of the lens accessory member. A feeling of wearing can be given.

  Further, since the outer peripheral surface of the ring peripheral surface portion 12b is fitted and fixed to the bottom inner peripheral surface of the main body peripheral surface portion 11b, the shape of the main body peripheral surface portion 11b is within a certain range even when there is, for example, aged deterioration or individual variation. The attachment / detachment force amount generated by fitting the inner peripheral surface of the main body peripheral surface portion 11b to the outer peripheral surface of the lens barrel 20 can be maintained constant, and an appropriate wearing feeling can always be given.

  And when the cap main body 11 is comprised with the shape | molded leather, high fashionability and a high-class feeling can be given to the lens-barrel protection cap 10. FIG.

  In addition, since the lens barrel protection cap 10 can be attached and detached while the lens accessory member is mounted on the lens barrel 20, usability is improved.

  In this way, the contact portion between the lens barrel protection cap 10 and the lens barrel 20 at the time of mounting is kept constant regardless of the presence or type of the lens accessory member. It becomes possible to give.

[Embodiment 2]
FIG. 4 shows a second embodiment of the present invention, and shows a state of the lens barrel protective cap 10 attached to the lens barrel 20 to which the lens barrier 30 is attached. In the second embodiment, the same parts as those in the first embodiment are denoted by the same reference numerals and the description thereof is omitted as appropriate, and only different points will be mainly described.

  In the first embodiment described above, the ring member 12 has a structure in which the ring peripheral surface portion 12b is erected in the thrust direction from the ring bottom surface portion 12a. On the other hand, the second embodiment has a structure in which the ring bottom surface portion 12a is omitted and the ring member 12 is configured only by the ring peripheral surface portion 12b.

  That is, the cylindrical ring peripheral surface portion 12b is necessary for the lens barrel 20 to be always inserted into the lens barrel protection cap 10 up to a certain insertion position regardless of the presence of the lens accessory member. The ring bottom surface portion 12a may not be provided. Therefore, in the present embodiment, the ring member 12 is made of a material having sufficient rigidity to clear the strength problem, and the ring member 12 can be only the ring peripheral surface portion 12b. It has become.

  According to the second embodiment, the same effects as those of the first embodiment described above can be achieved, the weight can be further reduced, and the outer shape of the lens barrel protective cap 10 can be increased. It is possible to secure a wider space for housing the lens accessory member.

  Note that the present invention is not limited to the above-described embodiment as it is, and can be embodied by modifying the constituent elements without departing from the scope of the invention in the implementation stage. Moreover, various aspects of the invention can be formed by appropriately combining a plurality of components disclosed in the embodiment. For example, you may delete some components from all the components shown by embodiment. Furthermore, the constituent elements over different embodiments may be appropriately combined. Thus, it goes without saying that various modifications and applications are possible without departing from the spirit of the invention.

DESCRIPTION OF SYMBOLS 10 ... Lens barrel protective cap 11 ... Cap main body 11a ... Main body bottom surface part 11b ... Main body peripheral surface part 12 ... Ring member 12a ... Ring bottom surface part 12b ... Ring peripheral surface part 12b1 ... Front end surface of ring peripheral surface part 20 ... Lens barrel 20a ... Front end surface 20a1 of the lens barrel. Peripheral portion of the front end surface of the lens barrel 30 ... Lens barrier 40 ... Lens cap 50 ... Lens filter

Claims (5)

A lens barrel protective cap for covering and protecting the lens barrel,
A cap main body having a main body bottom surface portion, and a main body peripheral surface portion erected in a thrust direction perpendicular to the main body bottom surface portion from a peripheral edge of the main body bottom surface portion;
The bottom surface is brought into contact with the bottom surface portion of the main body, and the outer peripheral surface is brought into contact with the bottom inner peripheral surface of the main body peripheral surface portion to be fixed in the cap main body. The length in the thrust direction is shorter than the main body peripheral surface portion. A ring member having a ring peripheral surface portion;
With
The front end surface of the ring peripheral surface portion is in contact with the peripheral edge portion of the front end surface of the lens barrel, the main body bottom surface portion covers the front end surface of the lens barrel in a non-contact manner, and the main body peripheral surface portion is the lens mirror. A lens barrel protective cap, wherein the lens barrel protective cap contacts the outer peripheral surface of the tube and covers the outer peripheral surface of the lens barrel. The ring circumferential surface portion has a length in the thrust direction such that a lens accessory member attached to the distal end portion of the lens barrel is longer than a thrust direction length protruding from the distal end surface of the lens barrel. The inner diameter of the lens accessory member is formed to be larger than the outer diameter,
The lens barrel protective cap according to claim 1, wherein the ring member covers the lens accessory member in a non-contact manner with respect to the lens barrel to which the lens accessory member is attached. The cap body is made of a shape-deformable material,
The ring member is formed of a rigid material, and the outer peripheral surface of the ring peripheral surface portion is fitted and fixed to the bottom inner peripheral surface of the main body peripheral surface portion,
The ring peripheral surface portion defines the shape of the bottom surface side of the main body peripheral surface portion, whereby the shape of the main body peripheral surface portion is held in a certain range, and the lens barrel protection cap is in a thrust direction with respect to the lens barrel. The attachment / detachment force amount generated by fitting the inner peripheral surface of the main body peripheral surface portion where the ring peripheral surface portion is not disposed when fitted to the outer peripheral surface of the lens barrel is fixed. The lens barrel protective cap according to claim 1.   The ring member further includes a ring bottom surface portion that is in contact with the bottom surface portion of the main body integrally with the bottom surface of the ring peripheral surface portion, and the ring peripheral surface portion is erected in a thrust direction from a peripheral edge of the ring bottom surface portion. The ring bottom surface portion covers the tip surface of the lens barrel in a non-contact manner when the tip surface of the ring peripheral surface abuts on the peripheral edge of the tip surface of the lens barrel. The lens barrel protective cap according to claim 3.   The lens barrel protective cap according to claim 3, wherein the cap body is made of molded leather.

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