JP2008020833A - Television lens cover - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a simply constituted television lens cover whose body is hardly affected by force applied when holding a handle and lifting the television lens. <P>SOLUTION: The television lens cover includes: the cover body fitted to the television lens having a first engagement part while surrounding the television lens; the handle part disposed on the cover body. The handle part includes a first hook part that is engaged with the first engagement part of the television lens. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a television lens cover, and more particularly to a television lens cover having a cover body attached to a television lens and surrounding the television lens.

2. Description of the Related Art Conventionally, a television lens cover that has a cover body that is attached to a television lens and surrounds the television lens is known. For example, Patent Document 1 describes a television lens cover 12 ′ having a handle 13 ′ that fits into a guide rail 11 ′ provided on the television lens 10 ′, as shown in FIG. According to the television lens cover 12 ′ described in Patent Document 1, the force applied when the handle 13 ′ is gripped and lifted directly acts on the television lens 10 ′ via the guide rail 11 ′. Almost no effect on 12 '. This eliminates the need for a structure for reinforcing the cover 12 'body.
JP 2000-206588 A

  However, in the television lens cover 12 ′ described in Patent Document 1, a guide rail 11 ′ is provided on the television lens 10 ′ side, and a handle 13 ′ that is fitted on the guide rail 11 ′ is provided on the cover 12 ′ side. Therefore, there is a problem that the structure becomes relatively complicated.

  The present invention has been made in view of such circumstances, and it is an object of the present invention to provide a TV lens cover with a simple configuration in which the force applied when gripping and lifting the handle hardly acts on the cover body. And

  The invention according to claim 1 includes a cover body that is attached to a television lens having a first engagement portion and surrounds the television lens, and a handle portion that is provided on the cover body. A first hook portion that engages with the first engagement portion of the television lens is included.

  According to the first aspect of the present invention, since the handle portion provided on the cover body includes the first hook portion that engages with the first engagement portion of the television lens, when gripping and lifting the handle, The force applied to the lens directly acts on the TV lens main body via the first hook portion and hardly acts on the cover main body. Further, as compared with the conventional case, the guide rail and the handle fitted to the guide rail are unnecessary, so that the configuration becomes extremely simple.

  According to a second aspect of the present invention, in the first aspect of the present invention, the television lens is provided with a rear cover that constitutes a rear surface of the cover main body and has a second engaging portion, and the handle portion. Includes a second hook portion that engages with the second engagement portion of the rear cover.

  According to the second aspect of the present invention, since the second hook portion that engages with the second engagement portion of the rear cover is further included, the force applied when gripping and lifting the handle is the first hook. Directly acts on the TV lens via the part and the second hook part, and hardly acts on the cover body.

  According to a third aspect of the present invention, in the second aspect of the present invention, the first engagement portion is a bracket with which the first hook portion is engaged, and the second engagement portion is the second engagement portion. The opening is engaged with a hook portion, and the second hook portion is attached to the bracket when the cover body is attached to the television lens while the cover body is moved relative to the television lens. It is characterized in that a cut-out for passing is formed.

  According to the third aspect of the present invention, the bracket that is the first engaging portion is formed with a notch for allowing the second hook portion to pass therethrough, so that the cover body is moved relative to the television lens. The bracket does not get in the way when the cover body is attached to the TV lens.

  According to a fourth aspect of the present invention, in the second aspect of the present invention, the first engagement portion is a bracket with which the first hook portion is engaged, and the second engagement portion is the second engagement portion. The opening is engaged with a hook portion, and the first hook portion and the second hook portion attach the cover body to the television lens while moving the cover body relative to the television lens. In this case, the second hook portion is disposed so as to pass through a side of the bracket.

  According to the invention described in claim 4, since the first hook portion and the second hook portion are arranged so that the second hook portion passes the side of the first engaging portion, the cover main body is set to the television. The bracket does not get in the way when the cover body is attached to the television lens while being moved relative to the lens.

  ADVANTAGE OF THE INVENTION According to this invention, it becomes possible to provide with a simple structure the cover for television lenses in which the force applied when grasping and lifting a handle hardly acts on a cover main body.

  Hereinafter, a television lens cover according to an embodiment of the present invention will be described with reference to the drawings.

  First, a structure for attaching the TV lens cover 10 to the TV lens 20 will be described. FIG. 1 is a perspective view of a TV lens cover 10 and a TV lens 20 to which the TV lens cover 10 is attached. FIG. 2 is a cross-sectional view of the television lens cover 10 attached to the television lens 20.

  As shown in FIGS. 1 and 2, the TV lens cover 10 (hereinafter also referred to as the cover 10) includes a cover body 11, a front plate 12, a handle 13, and the like.

  The cover body 11 is a cylindrical cover body that is attached to the TV lens 20 and surrounds the TV lens 20. The front surface of the cover body 11 is formed with an opening 12 a into which the tip of the TV lens 20 is inserted and protrudes. A plate 12 is provided.

  The cover main body 11 includes a handle 13, a first hook portion 14, a second hook portion 15, and the like. The handle portion 13 is disposed on the outer surface of the cover body 11, and the hook portions 14 and 15 are disposed on the inner surface of the cover body 11. Both end portions 13 a and 13 b of the handle 13 and the hook portions 14 and 15 are fastened through screw holes formed in the top plate 11 a of the cover main body 11. Thereby, the handle 13 and the hook parts 14 and 15 are integrated (equivalent to the handle part of this invention).

  The cover body 11 includes fixing screws N and N on the side plates 11b and 11b. The cover 10 can be fixed to the TV lens 20 side by screwing the fixing screws N, N to the rear cover 23 attached to the TV lens 20.

  As shown in FIGS. 1 and 2, the television lens 20 includes a lens barrel 21. The lens barrel 21 is provided with a bracket 22 with which the first hook portion 14 is engaged. Further, a rear cover 23 constituting the back surface of the cover main body 11 is attached to the base end portion of the television lens 20, and an opening 23 a for engaging the second hook portion 15 is formed in the rear cover 23. Yes. As shown in FIG. 3, the bracket 22 is formed with a notch 22 a having a width h <b> 2 larger than the width h <b> 1 of the second hook portion 15, and the second hook portion 15 is notched of the bracket 22 when the cover body 11 is attached. Pass 22a. Therefore, the bracket 22 does not get in the way when the cover body 11 is mounted.

  Next, an operation for attaching the cover 10 to the television lens 20 will be briefly described.

  While moving the cover 10 relative to the television lens 20, the first hook portion 14 and the second hook portion 15 of the cover body 11 are engaged with the bracket 22 and the opening 23a on the television lens 20 side, respectively. Tighten the fixing screws N, N. As described above, the cover 10 is attached to the TV lens 20 side. Thereby, the handle 13, the hook parts 14 and 15, and the TV lens 20 side are integrated.

  As described above, according to the television lens cover 10 of this embodiment and the television lens 20 to which the television lens cover 10 is attached, when the cover 10 is attached to the television lens 20 side, the handle 13 is attached. And the hook parts 14 and 15 and the TV lens 20 side are integrated. When the handle portion 13 or the like is integrated, the force applied when the handle 13 is gripped and lifted directly acts on the TV lens 20 via the hook portions 14 and 15, and the cover main body 11 has almost no force. Does not work. For this reason, a structure for reinforcing the cover body is not necessary. Further, as compared with the conventional case, the guide rail and the handle fitted to the guide rail are unnecessary, so that the configuration becomes very simple.

  Next, a structure for attaching the hood 30 to the TV lens cover 10 will be described. FIG. 4 is a perspective view of the TV lens cover 10 and the hood 30 attached to the TV lens cover. FIG. 5 is a diagram for explaining the configuration of the convex portion 32 and the opening 12b. FIG. 6 is a diagram for explaining the configuration of the opening 12b.

  As shown in FIGS. 4 and 5, the hood 30 includes a convex portion 32 having a large diameter portion 32 a and a small diameter portion 32 b (in FIG. 4, four convex portions 32 are illustrated). As shown in FIG. 6, the front plate 12 of the cover 10 is formed with an opening 12b into which the convex portion 32 of the hood 30 is inserted and a groove 12c continuous with the opening 12b (in FIG. 4, four openings 12b). For example). The groove 12 c extends in the circumferential direction of a circle having a center at the approximate center of the front plate 12, and the width of the groove 12 c is set smaller than the diameter of the small diameter portion 32 b of the convex portion 32. As shown in FIG. 5, the opening 12b and the groove 12c are closed from the back side by a leaf spring B fixed at one end to the back side of the front plate 12 by screws or the like.

  Next, an operation for attaching the hood 30 to the cover 10 will be briefly described.

  First, each convex portion 32 of the hood 30 is inserted into each opening 12 b provided in the front plate 12. Then, as shown in FIG. 7, the large diameter portion 32a of the convex portion 32 enters the cover 10 and elastically deforms the leaf spring B, and the small diameter portion 32b of the convex portion 32 is positioned in the opening 12b. In this state, the hood 30 is rotated by a predetermined amount (in FIG. 4, it is rotated counterclockwise).

  Then, as shown in FIG. 8, the small diameter portion 32b of the convex portion 32 moves in the groove 12c and is positioned at the end of the groove 12c. At this position, the hood 30 is in an appropriate posture with respect to the cover 10. That is, the length of the groove 12c is set to a length that allows the hood 30 to have an appropriate posture when the small-diameter portion 32b of the convex portion 32 is positioned at the end of the groove 12c. Further, at this position, the convex portion 32 is sandwiched between the leaf spring B and the front plate 12 by the action of the leaf spring B trying to return to the original shape. As described above, the hood 30 is attached to the cover 10 in an appropriate posture.

  Note that the hood 30 can be removed from the cover 10 by rotating the hood 30 reversely by a predetermined amount (in FIG. 4, rotating clockwise). When the hood 30 is removed from the cover 10, as shown in FIG. 5, the leaf spring B returns to its original shape and closes the opening 12b and the groove 12c. Therefore, dust, dust, or the like does not enter the cover 10 from the opening 12b and the groove 12c.

  As described above, according to the television lens cover 10 of the present embodiment and the hood 30 attached to the television lens cover 10, the convex portion 32 of the hood 30 is inserted into the opening 12 of the cover 10. The hood 30 can be attached to the cover 10 simply by rotating the hood 30 by a predetermined amount. Further, the hood 30 can be detached from the cover 10 only by rotating the hood 30 in a reverse direction by a predetermined amount. In addition, when the hood 30 is removed from the cover 10, the leaf spring B closes the opening 12 b and the like, so that dust, dust, and the like do not enter the cover 10 from the opening 12 b and the like.

  Next, a modified example will be described.

  In the above embodiment, as shown in FIG. 3, the cover body 11 is provided with the second hook portion 15 and the rear cover 23 is provided with the opening 23a with which the hook portion 15 is engaged. It is not limited to this.

  For example, as shown in FIG. 9, when the cover body 11 is attached to the television lens 20, the first hook portion 14 and the second hook 15 portion so that the second hook portion 15 passes the side of the bracket 22. May be arranged. Although FIG. 9 shows two second hook portions 15 and two openings 23a with which the second hook portions 15 are engaged, the second hook portion 15 and the second hook portions 15 are engaged with each other. There may be one opening 23a, or three or more openings 23a.

  Moreover, in the said embodiment, as shown in FIG. 3 etc., it demonstrated that the cover main body 11 was provided with the 1st hook part 14 and the 2nd hook part 15, and provided the bracket 22 and the opening part 23a in the TV lens 20 side. However, the present invention is not limited to this.

  For example, the cover body 11 may be provided with the bracket 22 and the opening 23a, and the first hook portion 14 and the second hook portion 15 may be provided on the TV lens 20 side.

  Moreover, in the said embodiment, as shown in FIG. 2, both ends 13a and 13b of the handle 13 and each hook part 14 and 15 are each tightened, and both are integrated and the handle part of this invention is made. Although described as configured, the present invention is not limited to this.

  For example, as shown in FIG. 10, the handle 13 and the hook portions 14 and 15 may be integrally formed of plastic or metal material. In this case, as shown in FIG. 11, it is conceivable that an opening 11c is formed by inserting the central portion of the handle 13 into the top plate 11a of the cover main body 11 and is fixed by screwing or the like.

  The above embodiment is merely an example in all respects. The present invention is not construed as being limited to these descriptions. The present invention can be implemented in various other forms without departing from the spirit or main features thereof.

1 is a perspective view of a TV lens cover 10 and a TV lens 20 to which the TV lens cover 10 is attached. FIG. FIG. 2 is a cross-sectional view of a state in which the TV lens cover 10 is attached to the TV lens 20. It is a figure for demonstrating the positional relationship of the 1st hook part 14 of the cover 10, the 2nd hook part 15, the bracket 22 by the side of the television lens 20, and the opening part 23a. 1 is a perspective view of a TV lens cover 10 and a hood 30 attached to the TV lens cover. FIG. It is a figure for demonstrating the structure of the convex part 32 and the opening 12b. It is a figure for demonstrating the structure of the opening 12b. It is a figure for demonstrating the state which inserted the convex part 32 in the opening 12b. It is a figure for demonstrating the state which rotated the hood 30 predetermined amount after inserting the convex part 32 in the opening 12b. It is a figure for demonstrating a modification. It is a figure for demonstrating a modification. It is a figure for demonstrating a modification. It is a figure for demonstrating a prior art example.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 ... TV lens cover, 11 ... Cover main body, 11a ... Top plate, 11b ... Side plate, 11c ... Opening, 12 ... Front plate, 12a ... Opening, 12b ... Opening, 12c ... Groove, 13 ... Handle, 13a ... End , 14 ... 1st hook part, 15 ... 2nd hook part, 20 ... Television lens, 21 ... Lens barrel, 22 ... Bracket, 22a ... Notch, 23 ... Cover, 23a ... Opening part, 30 ... Hood, 32 ... Convex Part, 32a ... large diameter part, 32b ... small diameter part, B ... leaf spring, N ... fixing screw

Claims (4)

A cover body attached to and surrounding the television lens having a first engagement portion;
A handle provided on the cover body,
The cover for a television lens, wherein the handle portion includes a first hook portion that engages with the first engagement portion of the television lens. The television lens is mounted with a rear cover that constitutes the back surface of the cover body and has a second engagement portion,
2. The television lens cover according to claim 1, wherein the handle portion includes a second hook portion that engages with the second engagement portion of the rear cover. The first engagement portion is a bracket with which the first hook portion is engaged,
The second engagement portion is an opening with which the second hook portion is engaged,
The bracket is formed with a notch through which the second hook portion passes when the cover body is attached to the television lens while the cover body is moved relative to the television lens. The television lens cover according to claim 2. The first engagement portion is a bracket with which the first hook portion is engaged,
The second engagement portion is an opening with which the second hook portion is engaged,
The first hook portion and the second hook portion are arranged so that the second hook portion is attached to the bracket when the cover main body is attached to the television lens while the cover main body is moved relative to the television lens. The TV lens cover according to claim 2, wherein the TV lens cover is disposed so as to pass through the side of the TV lens.

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