JP2011112116A - Adjuster and projector - Google Patents

Abstract

The present invention provides a technique for realizing a desired height adjustment function while reducing the number of parts with a simple structure in an apparatus having height adjustment such as a projector.
When a user pulls up a lever operation part 32, the lever part 30 rotates around the lever rotation shaft 31 in the clockwise direction in the figure. Along with this operation, the locking rib 37 moves in a direction away from the leg screw portion 41. As a result, the lever lock groove portion 33 and the leg screw portion 41 are separated from each other, and the screwed state, that is, the locked state is released. In order to re-lock the lever, the lever 30 is rotated about the lever rotation shaft 31 counterclockwise by the elastic return operation of the lever hinge 34 by releasing the lever operating portion 32. Along with the rotation, the locking rib 37 moves until it abuts on the leg screw portion 41 of the leg portion 40, and the lever lock groove portion 33 and the leg screw portion 41 are screwed to be in a locked state.
[Selection] Figure 4

Description

  The present invention relates to an adjuster and a projector, for example, an adjuster used for height adjustment of a projector or the like, and a projector provided with such an adjuster.

  In general, projectors are provided with legs that also function as adjusters (hereinafter simply referred to as “adjusters”) in order to adjust the height and the vertical direction of projection. There are various forms of this adjuster. One of the commonly used forms is a unitized structure in which the adjuster is fixed to a product (projector) with screws, claws or the like (for example, see Patent Document 1). As specific means for adjusting the height, there are both a lifting and lowering means using a screw structure as a means for fine adjustment, and a means for releasing the screw fitting state in the screw structure as a relatively large adjusting means. Structure is used.

JP 2005-291458 A

  By the way, the adjustment function is most important as a function required for the adjuster, but on the other hand, a simple structure is required from the viewpoint of simplification of the manufacturing process and cost reduction. In the technique disclosed in Patent Document 1, in order to reduce the number of parts, the main body of the adjuster and the height adjusting lever are integrated into one body. However, although the number of parts themselves can be reduced, the structure is complicated and the manufacturing cost is not necessarily reduced, and another technique is difficult to adopt as an actual product. In this technique, the adjuster is fixed to the exterior of a predetermined object by a bolt, a nut, or the like from the outside. Such a structure is often not preferable for a projector, and is not suitable for realizing a compact projector as a whole by minimizing the protruding shape from the exterior part. It was sought after.

  In view of the above problems, an object of the present invention is to provide a technique for realizing a desired height adjustment function while reducing the number of parts with a simple structure in an apparatus with height adjustment such as a projector. .

An apparatus according to the present invention is an adjuster that supports a height of a support object so that the height of the support object can be adjusted by screwing a leg portion having a threaded shaft portion, and is integrally formed with an exterior of the support object. And a leg holding part that is inserted and held through the shaft part of the leg part, and is pivotally attached to the cylindrical inside of the leg holding part, and in the attached state, the shaft part of the leg part And a lock operation portion that releases the screw engagement by a rotation operation, and the lock operation portion has a bending amount when the rotation operation to release the screw engagement is performed. The hinge part which elastically deforms so that it may increase is provided.
Further, the hinge portion may bend in a locked state where the lock operation portion is not operated, and may act to strengthen the screw fitting.
Further, when a predetermined force or more is applied to the leg portion in the pulling direction, the screw fitting is released, and when a force is applied to the leg portion to be pushed, the screw fitting is performed. The match may not be released.
The lock operation unit may be attached to the leg holding unit so as to be rotatable in the vertical direction, and the screw fitting may be released when the lock operation unit is rotated upward.
The leg holding portion is a box-like body, and includes a bottom surface that constitutes a part of the exterior bottom surface of the support object, an opening in which a front surface exposes the inside of the exterior front surface, and the lock on the upper side surface A concave-shaped or communication hole-shaped mounting portion that rotatably mounts the operation portion, and the lock operation portion includes a rotation shaft portion that is attached to the mounting portion at an upper portion of the side surface. The position of the moving shaft portion may be at a position closer to the opening side than the shaft portion of the leg portion in a state where the lock operation portion is attached.
Further, the hinge portion of the leg holding portion extends from a position on the opening side with respect to the shaft portion of the leg portion in a state where the lock operation portion is attached to the attachment portion, and more than the shaft portion. You may contact | abut to the said bottom face in the position which reached to the back side.
Another apparatus of the present invention is a projector and includes the above-described adjuster.

  ADVANTAGE OF THE INVENTION According to this invention, in the apparatus provided with height adjustment like a projector etc., the technique which implement | achieves a desired height adjustment function can be provided, reducing a number of parts with a simple structure.

It is a perspective view of the projector based on this embodiment. It is a disassembled perspective view of the adjuster provided in the cabinet lower part based on this embodiment. It is the perspective view which looked at the adjuster based on this embodiment from the top. It is sectional drawing of the adjuster based on this embodiment. It is the perspective view which showed the lever part and leg part based on this embodiment. It is a perspective view of the lever part based on this embodiment.

  Next, modes for carrying out the present invention (hereinafter, simply referred to as “embodiments”) will be specifically described with reference to the drawings.

  FIG. 1 is a perspective view of the projector 100 according to the present embodiment as viewed from the front lower side. The projector 100 includes a cabinet that can be divided into an upper part and a lower part of the cabinet upper part 10 and the cabinet lower part 20. The cabinet upper part 10 and the cabinet lower part 20 are, for example, resin molded products. In the cabinet (10, 20), there are a light projecting lens 12 that exposes a part of the lens from the front of the cabinet, an optical system such as a drive circuit unit, a DMD system, and an LCD system, a cooling fan unit, and the like. And a power circuit. Hereinafter, the side where the light projection lens 12 is exposed will be described as the front.

  Rear rubber legs 25 are attached to the cabinet lower portion 20 on both sides of the rear surface of the bottom surface 22. Further, an adjuster 90 for adjusting the height is attached to the front center of the bottom surface 22 and the lower center of the front surface 21. The adjuster 90 includes a leg portion 40, a leg holding portion 50, and a lever portion 30.

  Although details will be described later, the leg portion 40 is inserted into the leg holding portion 50 through a lower insertion hole 54 provided in the bottom surface 22 and is screwed into the lever portion 30 inside. Then, by rotating the leg portion 40 and performing a screw tightening operation, the leg portion 40 moves up and down, so that the leg portion 40 can be adjusted to a desired height. In addition, the front height of the projector 100 is the lowest in the state where FIG. Further, in FIG. 1B, the height in front of the projector 100 is the highest when the leg portion 40 is pulled out most. In addition, a lever operation portion 32 (see FIGS. 3 and 4) of the lever portion 30 is exposed at an opening portion of the leg holding portion 50 in the front surface 21 of the cabinet lower portion 20, and can be operated with one touch by operating the lever operation portion 32. The screw fitting state is released, that is, the locked state is released, and the leg portion 40 can be moved greatly up and down. Hereinafter, the structure of the adjuster 90 will be described in detail.

  FIG. 2 is an exploded perspective view of the adjuster 90 provided in the cabinet lower part 20. FIG. 3 is a perspective view of the adjuster 90 as viewed from above. Further, FIG. 4 is a cross-sectional view of the adjuster 90. FIG. 5 is a perspective view in which the lever portion 30 and the leg portion 40 of the adjuster 90 are extracted and the leg holding portion 50 is omitted. Further, FIG. 6 is a perspective view of the lever portion 30. For example, as shown in FIG. 2, the adjuster 90 includes a leg holding part 50 formed integrally with the cabinet lower part 20, a leg part 40 attached to the leg holding part 50, and a lever part 30.

  The leg holding part 50 is provided at the front center of the bottom surface 22 of the cabinet lower part 20 and the lower center of the front face 21. Specifically, the leg holding part 50 is integrated with the cabinet lower part 20 and has a box-like shape inside. This leg holding part 50 has a rectangular front opening 51 at the center bottom of the front face 21 of the cabinet lower part 20, and can accommodate and arrange the lever part 30. The lever portion 30 is attached to the inside of the leg holding portion 50 from the front opening 51. The front opening 51 has a shape that enables movement associated with the operation of the lever portion 30. In other words, the dimension is such that the upper side of the outer peripheral portion is stepped so as to allow a lifting operation.

  Further, as shown in FIG. 4, the bottom surface 52 of the leg holding part 50 constitutes a part of the bottom surface 22 of the cabinet lower part 20, and a lower insertion hole 54 whose periphery is slightly convex is formed at a predetermined position. Has been. Further, an upper insertion hole 53 having a convex shape around the lower insertion hole 54 is formed on the upper surface 56 just above the lower insertion hole 54. The upper insertion hole 53 and the lower insertion hole 54 are circular openings having dimensions that substantially coincide with the outer diameter of a leg shaft portion 46 of the leg portion 40, which will be described later, and the lifting and lowering operation of the leg portion 40 can be smoothly performed in the unlocked state. It has become. In addition, although the back surface 57 is provided in the box shape, the opening may be the same as the front opening 51. As shown in FIG. 3, a rotation shaft holding portion 59 for rotatably mounting the lever rotation shaft 31 of the lever portion 30 is formed as a communication hole on the upper front side of the side surface 55.

  The leg portion 40 includes a leg shaft portion 46 inserted into the upper insertion hole 53 and the lower insertion hole 54 of the above-described leg holding portion 50, and a thick and substantially disc-shaped leg ground contact portion 45 to which the leg shaft portion 46 is attached. Is provided.

  Further, the leg shaft portion 46 is threaded except for a part of both end portions, and is screwed into a lever lock groove portion 33 provided in the lever portion 30 and is screwed by rotating the leg grounding portion 45. Move. The lower end portion of the leg shaft portion 46 is attached to the leg grounding portion 45.

  Further, the upper end portion of the leg shaft portion 46 is divided into four in the vertical direction and is provided with a locking piece facing outward, and when inserted into the upper insertion hole 53 and the lower insertion hole 54, Even when elastically deformed and elastically restored after insertion, the leg 40 can be engaged with the upper surface 56 (the outer peripheral portion of the upper insertion hole 53) and the lock by the lever lock groove 33 is released. Has a structure that does not fall out of the leg holder 50.

  The lever part 30 is a resin molded part, and is accommodated in the leg holding part 50. The lever part 30 locks the raising / lowering operation of the leg part 40 and is screwed at a predetermined pitch to increase the height of the lever part 30. Adjustment is possible. Furthermore, a large adjustment is possible by releasing the lock.

  As shown in FIG. 4 to FIG. 6, the lever portion 30 includes a lever front surface 38 formed in a substantially rectangular shape with a predetermined thickness on the front side and a rear surface from the back surface of the lever front surface 38. A lever bottom surface 36 and a lever side surface 35 formed to extend are provided. In addition, a lever hinge portion 34 extending from the lever side surface 35 and a locking rib 37 extending from the lever side surface 35 and the lever bottom surface 36 are provided at positions facing the lever front surface 38.

  The lever front surface 38 includes a lever operation portion 32 that extends forward in a plate-like body having a predetermined thickness at a substantially central position in the height direction. Further, the lever side surface 35 extending rearward from the rear surface of the lever front surface 38 is provided such that the distance between both lever side surfaces 35 is larger than the diameter of the leg shaft portion 46, for example, when attached to the leg holding portion 50. As shown in FIG. 5, the leg shaft portion 46 extends to the vicinity of the axial center so as to hold the leg shaft portion 46.

  A cylindrical lever rotation shaft 31 that protrudes by a predetermined length in the outer direction is provided at the substantially upper center of the lever side surface 35. As described above, the lever rotation shaft 31 is rotatably attached to the rotation shaft holding portion 59 of the leg holding portion 50, and arranges the lever portion 30 at a desired position. At this time, the lever front surface 38 is arranged at a position that is coincident with or slightly recessed from the front surface 21 of the cabinet lower portion 20, and the lever operation portion 32 slightly protrudes from the front opening 51 so as to be easily operated. Yes.

  Further, in each of the lever side surfaces 35, a lever hinge portion that extends slightly rearward and further rearward from a substantially lower central portion of the lever side surface 35, which is a region below the formation position of the lever rotation shaft 31. 34 is formed. The lever hinge part 34 is comprised from the hinge main body 34a and the hinge action | operation edge part 34b. The hinge body 34 a is an arm-shaped part extending from the lever side surface 35. Moreover, the hinge action | operation edge part 34b is a site | part which protruded in the semicircle at the rear end part lower side of the hinge main body 34a. As shown in FIG. 4, when the lever portion 30 is accommodated in the leg holding portion 50, the hinge action end portion 34 b just comes into contact with the inner surface position of the bottom surface 52 beyond the leg shaft portion 46. . Further, when the lever operating portion 32 is operated and pivoted about the lever rotation shaft 31, the height position of the hinge action end portion 34b is fixed, so that the hinge body 34a is bent. The movement of each component accompanying the operation of the lever unit 30 will be described later.

  The lever bottom surface 36 extending from the rear surface of the lever front surface 38 extends from a position slightly lower than the approximate center in the height direction, that is, from a position corresponding to the lower position of the lever side surface 35. This corresponds to the shape of the lever hinge 34 described above. The extension length is such that the rear end of the lever bottom surface 36 reaches just the outer periphery of the lower insertion hole 54. Here, the lever hinge 34 extends slightly rearward from the extension start position. The locking rib 37 extends upward from the rear end portion by a predetermined length. A lever lock groove 33 is formed on the rear side surface of the locking rib 37, and has a shape that fits into the screw formed on the leg screw portion 41 of the leg portion 40. Further, the upper portion of the locking rib 37 is made to correspond to the outer diameter of the leg shaft portion 46 so as not to hinder the operation when the lever portion 30 is operated and the lever lock groove portion 33 is tilted and released. Part has been removed.

The operation and action of each element of the adjuster 90 configured as described above will be briefly described.
In a normal state in which the leg portion 40 and the lever portion 30 are attached to the leg holding portion 50 and the lever portion 30 is not operated, the locking rib 37 of the leg portion 40 is connected to the outer periphery of the leg screw portion 41 of the leg portion 40. Touch the surface. More specifically, the lever lock groove portion 33 of the lock rib 37 is screwed into the leg screw portion 41 and is locked. At this time, the hinge action end portion 34b of the lever hinge portion 34 abuts against the inner surface of the bottom surface 52, and further, the lever hinge portion 34 is slightly bent so that an urging force acts. Therefore, even if the leg portion 40 tries to move downward with respect to the cabinet lower portion 20 (leg holding portion 50), unless the user performs an operation such as pulling, the screw fitting between the lever lock groove portion 33 and the leg screw portion 41 and the above-described operation are performed. The urging force strengthens the screw-fitted state and prevents movement. However, when the user pulls the leg portion 40 with a force greater than or equal to a predetermined force, it is possible to disengage the screw and move even when there is no operation on the lever portion 30.

  On the other hand, if it is desired to adjust the height of the leg portion 40, if the fine adjustment is made, the user rotates the leg grounding portion 45 as described above to screw the leg portion 40 to a desired height. adjust. When adjusting by moving a large amount, the user needs to operate the lever portion 30 to release the locked state. Specifically, when the user pulls up the lever operation unit 32, the lever unit 30 rotates about the lever rotation shaft 31 in the clockwise direction in FIG. 4. At this time, since the hinge main body 34a of the lever hinge portion 34 is bent, the lever portion 30 can be rotated even if the hinge action end portion 34b abuts against the bottom surface 52 and the movement is restricted. In accordance with the operation, the locking rib 37 moves in a direction away from the leg screw portion 41. As a result, the lever lock groove portion 33 and the leg screw portion 41 are separated from each other, and the screwed state, that is, the locked state is released. In a state where the lock is released, the user can largely move the leg portion 40 to a desired position. In order to re-lock the lever, the lever 30 is rotated counterclockwise in the figure around the lever rotation shaft 31 by releasing the lever operating portion 32 and elastically returning the lever hinge 34. . Along with the rotation, the locking rib 37 moves until it abuts on the leg screw portion 41 of the leg portion 40, and the lever lock groove portion 33 and the leg screw portion 41 are screwed to be in a locked state.

  According to this embodiment, the adjuster 90 can be realized with a very small number of parts and a simple configuration, so that the assembly process can be simplified and the cost can be reduced. Further, the position of the leg portion 40 of the adjuster 90 is not only simply fixed by screw fitting, but also strengthened by the elastic force of the lever hinge portion 34, so that the lock state is reinforced with a simple configuration. Can do. Further, since the lever unit 30 is lifted to be in the unlocked state, when the unlocking is performed, the projector 100 is pressed down and the leg unit 40 is inserted into the interior, and the projector 100 is dropped on the ground plane. The height adjustment can be performed very efficiently. Further, the length of the lever hinge portion 34 can be appropriately set according to the required amount of deflection, the magnitude of the urging force, and the like, and the hinge action end portion 34 b may be positioned before the leg shaft portion 46. However, from the viewpoint of the amount of rotation of the lever operation portion 32 and the force applied by the user, the hinge action end portion 34b is preferably located behind the leg shaft portion 46 as in the above embodiment. Further, in order to adjust the rotation amount, that is, the operation amount of the lever portion 30, the positions where the rotation shaft holding portion 59 and the lever rotation shaft 31 are formed may be shifted to the leg shaft portion 46 side.

  The present invention has been described based on the embodiments. This embodiment is an exemplification, and it will be understood by those skilled in the art that various modifications can be made to combinations of these components, and such modifications are also within the scope of the present invention. The adjuster 90 can be applied not only to the projector 100 but also to various measuring devices and tables.

DESCRIPTION OF SYMBOLS 10 Cabinet upper part 20 Cabinet lower part 30 Lever part 31 Lever rotating shaft 32 Lever operation part 33 Lever lock groove part 34 Lever hinge part 34a Hinge main body 34b Hinge action | operation edge part 35 Lever side surface 37 Locking rib 38 Lever front 40 Leg part 41 Leg screw part 46 Leg shaft portion 50 Leg holding portion 59 Rotating shaft holding portion 90 Adjuster 100 Projector

Claims (7)

An adjuster that supports a height of a support object by adjusting a height of a support object by screwing a leg portion having a threaded shaft portion,
A leg holding part that is integrally formed with the exterior of the support object and that is inserted into and held by the shaft part of the leg part; and
A lock operating portion that is rotatably attached to the inside of the cylindrical shape of the leg holding portion, and that is screwed with the shaft portion of the leg portion in the attached state and releases the screw fitting by a turning operation; ,
With
The adjuster is characterized in that it includes a hinge part that elastically deforms so as to increase the amount of bending when a turning operation for releasing screw fitting is performed.   2. The adjuster according to claim 1, wherein in a locked state in which the lock operation unit is not operated, the hinge portion bends and acts to strengthen the screw fitting.   The screw fitting is released when a predetermined force or more is applied in the pulling direction to the leg portion, and the screw fitting is released when a force is applied in the pushing direction to the leg portion. The adjuster according to claim 2, wherein the adjuster is not released.   The lock operation unit is attached to the leg holding unit so as to be rotatable in the vertical direction, and the screw fitting is released when the lock operation unit is rotated upward. The adjuster according to any one of the above. The leg holding portion is a box-shaped body, and includes a bottom surface that constitutes a part of the exterior bottom surface of the support object, an opening in which a front surface exposes the inside of the front surface of the exterior, and the lock operation unit at an upper side surface. And a mounting portion of a concave shape or a communication hole shape that is rotatably attached,
The lock operation part has a rotation shaft part that is attached to the attachment part at the upper part of the side surface,
The position of the attachment portion and the rotation shaft portion is located on the opening side of the shaft portion of the leg portion when the lock operation portion is attached to the attachment portion. 4. The adjuster according to 4.   The hinge part of the leg holding part is a position that extends from the position on the opening side of the shaft part of the leg part and reaches the rear side of the shaft part when the lock operation part is attached. The adjuster according to claim 5, wherein the adjuster is in contact with the bottom surface.   A projector comprising the adjuster according to claim 1.

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