JP2016065993A - Operation mechanism and projector device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an operation mechanism and a projector device that can have a complete sealed structure by enabling an operation ring arranged rotatably relative to a casing to be operated from outside the casing.SOLUTION: A projector device has a focus adjusting ring (30), comprising a magnetic member (31), arranged rotatably in an operation ring cover (11) forming part of a casing. On an outer peripheral surface of the operation ring cover (11), a focus adjusting operation lever (50) comprising a magnetic member (53) is mounted detachably. At least one of the magnetic member (31) and the magnetic member (53) is formed of a magnet, and the focus adjusting operation lever (50) is moved along an operation ring cover (11) to let the focus adjusting ring (30) rotate following it.SELECTED DRAWING: Figure 7

Description

  The present invention relates to an operation mechanism and a projector apparatus, and more particularly to an operation mechanism and a projector apparatus suitable for dustproof and drip-proof.

  An optical device such as a projector device or a camera is provided with an operation ring for zoom or focus adjustment, and the user can shift the lens in the optical axis direction by rotating the operation ring. For example, in the projector device, a gap is provided between the operation ring and the appearance cabinet (housing) in order to allow rotation of the operation ring.

  On the other hand, if dust or water droplets enter the projector device, the dust may adhere to the lamp portion of the projector device, resulting in a decrease in luminance or a leakage of water due to water droplets. As a dustproof and drip-proof structure of the projector device, for example, in a projector device having a large gap between the projection lens and the front cover, as disclosed in Patent Document 1, a rubber-like member is provided on the body portion of the projection lens. A dust-proof plate made of a plastic member is externally fitted to prevent dust from entering the projector device. Conventionally, when an operation ring is provided, an attempt has been made to seal the inside of the projector apparatus by providing a stretchable material such as sponge or rubber in the gap between the operation ring and the external cabinet.

JP 2005-55643 A

  However, the projector device disclosed in Patent Document 1 does not disclose prevention of dust intrusion into the operation ring. Also, even when a stretchable material such as sponge or rubber is provided in the gap between the operation ring and the external cabinet, it is necessary to leave a slight gap between the two in order to move the operation ring relative to the housing. For this reason, it is difficult to completely seal the gap between the operation ring and the appearance cabinet, which causes intrusion of fine dust and water droplets into the projector apparatus.

  The present invention has been made in view of these circumstances, and a complete sealing structure can be realized by enabling an operation ring disposed rotatably inside the housing to be operated from the outside of the housing. It is an object of the present invention to provide a possible operation mechanism and projector apparatus.

  In order to solve the above-described problem, a first technical means of the present invention is an operation mechanism, which is a housing, an operation ring rotatably disposed inside the housing, and a first provided in the operation ring. A first magnetic member, and a second magnetic member that can be opposed to the first magnetic member via the casing, and an operation lever that is movable along the casing, and the first magnetic member At least one of the member and the second magnetic member is a magnet.

  According to a second technical means, in the first technical means, the first magnetic member is provided so as to be movable in a radial direction of the operation ring.

  According to a third technical means, in the first or second technical means, a part of the casing is made of a transparent body, and the position of the operation ring disposed inside the casing is visible. It is a feature.

  According to a fourth technical means, in any one of the first to third technical means, the operation lever is detachable from the housing.

  According to a fifth technical means, in any one of the first to fourth technical means, the operation ring is a zoom adjustment ring or a focus adjustment ring of a lens.

  A sixth technical means is a projector device, characterized in that it comprises any one of the first to fifth technical means.

  According to the present invention, since the operation ring provided inside the housing can be operated by the operation lever provided outside the housing, there is no need to provide a gap between the housing and the operation ring portion. In addition, it is possible to realize a complete dustproof and splashproof structure that can prevent the entry of dust and water droplets from the outside.

It is an external view which shows the example of 1 structure which concerns on the projector apparatus of this invention. It is the enlarged view to which the part of the operation mechanism of the projector apparatus shown in FIG. 1 was expanded. It is sectional drawing which shows the XX cross section of the operation mechanism shown in FIG. It is a figure at the time of removing the operation lever from the operation mechanism shown in FIG. It is a figure which shows the operation ring of the operation mechanism shown in FIG. It is a figure which shows the operation lever of the operation mechanism shown in FIG. It is a figure for demonstrating the mounting method of the operation lever of the operation mechanism shown in FIG. It is a figure which shows the other structural example which concerns on the operation mechanism of this invention. It is a figure which shows the further another structural example which concerns on the operation mechanism of this invention.

  DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, preferred embodiments according to an operation mechanism and a projector device of the invention will be described with reference to the drawings. The operation mechanism and the projector device of the present invention can operate an operation ring provided inside the housing by an operation lever provided outside the housing. In the following description, an example in which the operation mechanism according to the present invention is applied to a projector apparatus will be described. However, the same reference numerals are used in different drawings, and the description thereof may be omitted. is there.

(First embodiment)
FIG. 1 is an external view showing a configuration example according to the projector apparatus of the present invention, and FIG. 2 is an enlarged view of an operation mechanism portion of the projector apparatus shown in FIG. 3 is a cross-sectional view showing an XX cross section of the operation mechanism shown in FIG. 4 is a view when the operation lever is removed from the operation mechanism shown in FIG. 2, and FIGS. 5 and 6 are views showing the operation ring and the operation lever of the operation mechanism shown in FIG. 2, respectively.

As shown in FIGS. 1, 2, and 3, the projector device 1 according to the present embodiment includes a housing 10, a lens unit 20, an operation ring cover 11, a lens cover 12, an operation switch unit 13, a light emitting unit 14, and a lens. Unit 20, focus adjustment ring 30, zoom adjustment ring 40,
A focus adjustment operation lever 50 and a zoom adjustment operation lever 60 are provided.

  The operation switch unit 13 is a part that receives user operations such as an operation of turning on / off the power of the projector device 1 and an operation of switching images, and various operation buttons are arranged. The light emitting unit 14 includes a gas discharge lamp therein, and light from the gas discharge lamp is projected from the lens unit 20 onto an external screen via a transmissive liquid crystal element, a reflecting mirror, and the like. As an optical element for obtaining a projected image, a reflective liquid crystal element or DMD (Digital Micromirror Device) may be used instead of the transmissive liquid crystal element.

  The lens unit 20 of the projector device 1 has a plurality of lenses that can move along the optical axis in order to adjust the focus of the image projected on the external screen and the size of the projected image. A rotatable focus adjustment ring 30 and a zoom adjustment ring 40 are provided on the outer peripheral portion of the lens unit 20, and each of the focus adjustment ring 30 and the zoom adjustment ring 40 is rotated so as to be predetermined. The lens can be moved in the optical axis direction to adjust the focus and size of the image. The focus adjustment ring 30 and the zoom adjustment ring 40 correspond to the operation ring of the present invention, and are made of a nonmagnetic material such as an aluminum alloy, a magnesium alloy, or a synthetic resin so that the outer diameters are equal. Yes.

  An operation ring cover 11 having an arcuate cross section is coaxially provided on the outer periphery of the focus adjustment ring 30 and the zoom adjustment ring 40 with a predetermined gap from the focus adjustment ring 30 and the zoom adjustment ring 40. Yes. As will be described later, the outer peripheral surface of the operation ring cover 11 is a mounting surface for mounting the focus adjustment operation lever 50 and the zoom adjustment operation lever 60. A transparent lens cover 12 for allowing the projection light from the lens unit 20 to pass through is provided on the front surface of the lens unit 20. The lens unit 20, the focus adjustment ring 30, and the zoom adjustment ring 40 can be completely sealed by the housing 10, the operation ring cover 11, and the lens cover 12. The operation ring cover 11 and the lens cover 12 constitute a part of the housing 10. The operation ring cover 11 may be made of a nonmagnetic material such as a synthetic resin material, and may be configured separately or integrally with the housing 10.

  In the present invention, an operation ring provided inside the housing can be operated by an operation lever provided outside the housing. For this purpose, magnetic members 31 and 41 are provided on the outer peripheral sides of the focus adjustment ring 30 and the zoom adjustment ring 40, respectively. The magnetic members 31 and 41 correspond to the first magnetic member of the present invention. The magnetic members 31 and 41 are fixed to the focus adjustment ring 30 and the zoom adjustment ring 40, respectively, with a predetermined gap so as not to contact the operation ring cover 11.

  A focus adjustment operation lever 50 and a zoom adjustment operation lever 60 are detachably mounted on the outer peripheral surface of the operation ring cover 11. The focus adjustment operation lever 50 is for rotating the focus adjustment ring 30, and the zoom adjustment operation lever 60 is for rotating the zoom adjustment ring 40. As shown in FIG. 6, the focus adjustment operation lever 50 has a sliding surface 51 having an arc cross section that is the same as the outer peripheral surface of the operation ring cover 11, and a knob portion 52 that can be operated by the user.

  A magnetic member 53 is provided on the sliding surface 51 side. The focus adjustment operation lever 50 is made of, for example, synthetic resin, and is provided so that the surface of the magnetic member 53 is slightly recessed from the sliding surface 51. This prevents the magnetic ring 53 from scratching the operating ring cover 11 when the focus adjustment operating lever 50 is slid along the operating ring cover 11. The outer surface of the operation ring cover 11 and the sliding surface 51 of the focus adjustment operation lever 50 may be coated with fluororesin in order to reduce the friction coefficient. The zoom adjustment operation lever 60 has substantially the same configuration as the focus adjustment operation lever 50, and a magnetic member 63 is provided on the sliding surface of the zoom adjustment operation lever 60 on the operation ring cover 11 side. Here, the magnetic members 53 and 63 correspond to the second magnetic member of the present invention.

  At least one of the magnetic member 31 of the focus adjustment ring 30 and the magnetic member 53 of the focus adjustment operation lever 50 is composed of a magnet. For this reason, when the magnetic member 53 of the focus adjustment operation lever 50 is brought close to the magnetic member 31 of the focus adjustment ring 30, an attractive force acts between them, and the focus adjustment operation lever 50 is moved to the operation ring cover 11. It is possible to cause the focus adjustment ring 30 to follow and rotate by sliding along. Similarly, at least one of the magnetic member 41 of the zoom adjustment ring 40 and the magnetic member 63 of the zoom adjustment operation lever 60 is composed of a magnet, and the description is omitted because the operation is the same. The magnetic members 31 and 41 and the magnetic members 53 and 63 have a columnar shape in each drawing, but may have a prismatic shape, and various shapes can be used.

  7A and 7B are diagrams for explaining a method of mounting the operation lever of the operation mechanism shown in FIG. 2. FIG. 7A shows a state before the operation lever is mounted, and FIG. 7B shows a state after the operation lever is mounted. ing. Since at least one of the magnetic member 53 of the focus adjustment operation lever 50 and the magnetic member 31 of the focus adjustment ring 30 is composed of a magnet, the magnetic member 53 of the focus adjustment operation lever 50 is provided on the focus adjustment ring 30. When the positions are brought close to each other so as to face the magnetic member 31, the magnetic member 53 of the focus adjusting operation lever 50 and the focus adjusting lever 50 are attracted by the attractive force acting between them as shown in FIG. 7B. The focus adjustment operation lever 50 comes into contact with the operation ring cover 11 at a position facing the magnetic member 31 of the ring 30.

  The focus adjustment ring 30 is moved by the attractive force acting between the magnetic member 31 and the magnetic member 53 by moving the focus adjustment operation lever 50 along the operation ring cover 11 in the A direction or the B direction shown in the figure. Can be rotated. Since the relationship between the zoom adjustment operation lever 60 and the zoom adjustment ring 40 is the same, the description thereof is omitted. As described above, in the present embodiment, the focus adjustment ring 30 and the zoom adjustment ring 40 are located in the space surrounded by the casing 10, the operation ring cover 11, and the lens cover 12. Intrusion of water droplets can be prevented. Further, if the focus adjustment operation lever 50 or the zoom adjustment operation lever 60 is removed, the adjustment of the focus adjustment ring 30 or the zoom adjustment ring 40 becomes impossible, and mischief can be prevented.

  Further, the magnetic member 31 of the focus adjustment ring 30 and the magnetic member 53 of the focus adjustment operation lever 50 may be composed of magnets. In this case, for example, the respective magnetizations of the magnetic member 31 and the magnetic member 53 are magnetized. The direction may be the radial direction, and the different polarities of the magnetic member 31 and the magnetic member 53 may be opposed to each other. In addition, the magnetic member 41 of the zoom adjustment ring 40 and the magnetic member 63 of the zoom adjustment operation lever 60 may each be formed of a magnet. In this case, by adjusting the polarity of the magnetic member 31 of the focus adjustment ring 30 and the polarity of the magnetic member 41 of the zoom adjustment ring 40, the focus adjustment operation lever 50 and the zoom adjustment operation lever 60 are reversed. The mounting mistake can be prevented.

(Second Embodiment)
FIG. 8 is a diagram showing another configuration example according to the operation mechanism of the present invention, and shows the operation mechanism of the second embodiment. In the second embodiment, the attachment structure of the magnetic member 31 and the magnetic member 41 provided on the focus adjustment ring 30 and the zoom adjustment ring 40 is different from that of the first embodiment, and other configurations are the first. This is the same as the embodiment. Hereinafter, the magnetic member 31 of the focus adjustment ring 30 will be described, but the same applies to the magnetic member 41 of the zoom adjustment ring 40.

  As shown in FIG. 8A, in the second embodiment, the focus adjustment ring 30 is provided with a hole 32 for inserting the magnetic member 31, and the magnetic member 31 is inserted into the hole 32. It is inserted so as to be movable in the radial direction. The magnetic member 31 is provided with a flange 34 integrally or separately from the magnetic member 31 on the center side in the radial direction. An opening of the hole 31 is provided with a stopper 33 made of an annular non-magnetic material. When the magnetic member 31 moves radially outward, the flange 34 comes into contact with the stopper 33, so that the magnetic member 31 has a hole. It is designed not to escape from 32.

  As shown in FIG. 8B, when the focus adjustment operation lever 50 is mounted outside the operation ring cover 11, the magnetic member 53 of the focus adjustment operation lever 50 and the magnetic member of the focus adjustment ring 30 are used. Since the attractive force acts between the magnetic member 31 and the magnetic member 53, the magnetic member 31 that is movable in the radial direction is attracted to the magnetic member 53 and faces the magnetic member 53. At this time, the flange 34 of the magnetic member 31 contacts the stopper 33 so that a slight gap remains between the magnetic member 31 and the operation ring cover 11.

  As shown in FIG. 8B, the focus adjustment operation lever 50 is slid along the operation ring cover 11 with the focus adjustment operation lever 50 mounted on the outside of the operation ring cover 11, thereby focusing. The adjustment ring 30 follows and rotates in the same manner as in the first embodiment. In the second embodiment, for example, the radial position of the stopper 33 can be adjusted by cutting screws in the outer peripheral portion of the stopper 33 and the inner peripheral portion of the hole 32. For this reason, it is possible to adjust the gap between the magnetic member 31 and the operation ring cover 11 when the focus adjustment operation lever 50 is mounted, and it is possible to correct an assembly error when each member is assembled. Further, since the projecting portion from the focus adjustment ring 30 can be made small, handling of the focus adjustment ring 30 during assembly is facilitated.

(Third embodiment)
FIG. 9 is a diagram showing still another configuration example according to the operation mechanism of the present invention, and shows one configuration example of the third embodiment. In the present invention, it is necessary to mount the focus adjustment operation lever 50 or the zoom adjustment operation lever 60 in order to rotate the focus adjustment ring 30 or the zoom adjustment ring 40. However, since the position of the focus adjustment ring 30 or the zoom adjustment ring 40 is not always at the same position, when the focus adjustment operation lever 50 or the zoom adjustment operation lever 60 is removed and reattached, The mounting position on the adjustment ring 30 or the zoom adjustment ring 40, that is, the circumferential position of the magnetic member 31 of the focus adjustment ring 30 or the magnetic member 41 of the zoom adjustment ring 40 may not be known.

  For this reason, in the third embodiment, the mark 35 is provided on the outer end surface in the optical axis direction corresponding to the position where the magnetic member 31 of the focus adjustment ring 30 is provided. As a result, the rotational position of the focus adjustment ring 30 can be viewed from the outside through the transparent lens cover 12, so that the focus adjustment operation lever 50 can be easily attached. The mark 35 is particularly effective when the magnetic member 31 is provided so as not to protrude from the outer peripheral surface of the focus adjustment ring 30. Further, by configuring the operation ring cover 11 with a transparent member, the positions of the focus adjustment ring 30 and the zoom adjustment ring 40 may be visible from the outside.

  As described above, the example in which the operation mechanism according to the present invention is applied to the projector apparatus has been described. However, it is obvious that the operation mechanism according to the present invention can be applied to an optical apparatus such as a camera other than the projector apparatus. is there.

DESCRIPTION OF SYMBOLS 1 ... Projector apparatus, 10 ... Housing | casing, 11 ... Operation ring cover, 12 ... Lens cover, 13 ... Operation switch part, 14 ... Light emission unit, 20 ... Lens part, 30 ... Focus adjustment ring, 31 ... Magnetic member, 32 ... Hole, 33 ... Stopper, 34 ... Flange, 35 ... Mark, 40 ... Zoom adjustment ring, 41 ... Magnetic member, 50 ... Focus adjustment operation lever, 51 ... Sliding surface, 52 ... Hook part, 53 ... Magnetic member , 60 ... zoom adjustment operation lever, 63 ... magnetic member.

Claims (6)

  A housing, an operation ring rotatably disposed inside the housing, a first magnetic member provided on the operation ring, and a second that can face the first magnetic member via the housing And an operating lever that is movable along the housing, wherein at least one of the first magnetic member and the second magnetic member is a magnet.   The operation mechanism according to claim 1, wherein the first magnetic member is provided so as to be movable in a radial direction of the operation ring.   3. The operation mechanism according to claim 1, wherein a part of the casing is made of a transparent body, and the position of the operation ring disposed inside the casing is visible.   The operation mechanism according to claim 1, wherein the operation lever is detachable from the housing.   5. The operation mechanism according to claim 1, wherein the operation ring is a zoom adjustment ring or a focus adjustment ring of a lens. A projector apparatus comprising the operation mechanism according to claim 1.

Images