JP2008091152A - Lifting device for illumination - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a lifting device for illumination capable of containing a manufacturing cost by reducing the number of recessed grooves provided in a rotary drum and downsizing the lifting device. <P>SOLUTION: The lifting device for the illumination includes a lifting device body 1 installed in a ceiling, a rotary drum 2 supported rotatably by the lifting device body 1, a drive motor 5 for rotation driving the rotary drum 2, a wire 6 wound around the outer circumference part of the rotation drum 2, and a luminaire 8 installed at one end of the wire 6. The luminaire 8 is lifted and declined freely by winding the wire 6 to the rotary drum 2 or by being sent from the rotary drum 2 by the rotation of the rotary drum 2. The wire 6 is made of a plurality of pieces, and a line of recessed groove 20 is provided at the outer circumference part of the rotary drum 2 in parallel with the rotation face and throughout the whole circumference, and the plurality of wires 6 are wound around and housed in the recessed groove 20 so as to be in swirl shape in a plan view in the nearly plane face including the recessed groove 20. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a lighting lifting device attached to a ceiling.

  2. Description of the Related Art Conventionally, lighting lifting devices that lift and lower a lighting fixture suspended from a ceiling have been used (see, for example, Patent Document 1). The lighting lifting device includes a lifting device body attached to the ceiling, a rotating drum rotatably supported by the lifting device body, a driving motor for rotating the rotating drum, and an outer peripheral portion of the rotating drum. And a lighting fixture is attached to one end of the wire. Then, the wire can be raised and lowered by winding / sending the wire to / from the rotating drum by the rotation of the rotating drum.

  In such a conventional lighting lifting device, a plurality of wires, one end of which is attached to a lighting fixture, are wound / sent out to / from a rotating drum. Are provided separately, and each wire is wound around each of the concave grooves. That is, the groove for winding each wire in the direction of the rotation axis of the rotary drum is arranged in parallel, and each wire is wound in the groove formed in parallel at a position shifted in the direction of the rotation axis of the rotation drum.

However, in this case, since the concave grooves for winding the wires in the direction of the rotation axis of the rotating drum are arranged in parallel by the number of wires, the length of the rotating drum in the direction of the rotation axis is increased, and the lifting device is increased in size. There was a problem. Further, when a rotating drum provided with a concave groove is formed as a single component, the concave groove is formed, which makes the mold structure complicated and expensive. Also, use a complicated mold. In the case of forming with a plurality of parts so as to be omitted, there is a problem that the number of parts increases as the number of concave grooves increases, resulting in an increase in manufacturing cost.
JP-A-7-288026

  The present invention has been made in view of the above points, and an object of the present invention is to reduce the number of concave grooves provided in the rotating drum, thereby reducing the size of the lifting device and reducing the manufacturing cost. An object of the present invention is to provide an illumination lifting device that can be used.

  In order to solve the above-mentioned problem, in the invention according to claim 1, the lifting device main body 1 attached to the ceiling, the rotating drum 2 rotatably supported by the lifting device main body 1, and the rotating drum 2 are provided. A driving motor 5 for rotational driving, a wire 6 wound around the outer periphery of the rotating drum 2, and a lighting fixture 8 are attached to one end of the wire 6, and the lighting fixture 8 is connected to the rotating drum 2. Is a lighting lifting / lowering device that is freely lifted / lowered by winding the wire 6 around the rotating drum 2 or sending it out of the rotating drum 2 by the rotation of The outer periphery of the drum 2 is provided with a single groove 20 parallel to the rotation surface and extending over the entire circumference, and the plurality of wires 6 are formed in a substantially planar shape including the groove 20 so as to have a bowl shape in a plan view. In the groove 20 It is characterized in that formed by come up storing.

  By adopting such a configuration, the groove 20 formed in the rotating drum 2 can be completed by one line, the width of the groove 20 formed in the rotating drum 2 can be shortened, and the length of the rotating drum 2 in the direction of the rotation axis. Can be shortened.

  The invention according to claim 2 is characterized in that, in the invention according to claim 1, the substantially flat surface including the concave groove 20 of the rotary drum 2 is disposed so as to be horizontal. is there.

  By setting it as such a structure, the up-down length of the rotating drum 2 can be shortened and the up-down length of the lighting lifting apparatus can be shortened.

  In the invention according to claim 3, in the invention according to claim 1 or 2, the wire 6 is equidistantly spaced from the rotary drum 2 by 360 ° / n (n is the number of the wires 6). And is led out in a substantially tangential direction of the outer periphery of the rotary drum 2.

  With such a configuration, when the lighting fixture 8 (particularly the round lighting fixture 8) is suspended, the locking position of the wire 6 on the side of the lighting fixture 8 can be arranged in a regular polygon shape (ie, point-symmetric). Therefore, it is easy to suspend in a well-balanced manner.

  Further, in the invention according to claim 4, in the invention according to claims 1 to 3, the rotating drum 2 is provided with a drum main body 3 having a wall portion which is one inner wall of the recessed groove 20, and a recessed portion. The main body is constituted by the wire pressing portion 4 having the wall portion which becomes the other inner wall of the groove 20, and a wall portion which becomes the bottom surface 20 a of the concave groove 20 is formed in at least one of the drum body 3 and the wire pressing portion 4. Then, the wire retainer 4 is arranged such that both the drum body 3 and the inner wall of the concave groove 20 of the wire retainer 4 are opposed to each other through a gap S that is substantially the same as or slightly larger than the thickness of the wire 6. It is characterized by being fixed to the drum body 3.

  By adopting such a configuration, the drum body 3 and the wire presser 4 are made as separate members, and a recess such as the groove 20 is formed in one member, and a slide mold is required, and the mold structure There is no such a thing that the manufacturing cost becomes high due to the complexity.

  Moreover, in the invention which concerns on Claim 5, in the invention which concerns on Claim 4, the clearance gap S of the both wall parts used as the inner wall of the said recessed groove 20 of the said drum main body 3 part and the wire pressing part 4 is made variable. It is characterized by comprising.

  By setting it as such a structure, according to the hanging load requested | required, a groove width can be easily set corresponding to the wire 6 of a different diameter.

  In the present invention, since a plurality of wires are wound around a single groove formed on the outer periphery of the rotating drum, the number of grooves provided in the rotating drum is reduced, and the rotating drum is rotated. The width of the groove in the axial direction can be shortened, the lighting lifting device can be reduced in size and space, and the manufacturing cost can be reduced.

  Hereinafter, the present invention will be described based on the embodiment shown in FIGS. 1 is a perspective view of the present invention, FIG. 2 is an overall exploded perspective view, FIGS. 3 and 4 are perspective views and side sectional views of a rotating drum, FIG. 5 is a perspective view of engagement between a drive motor and the rotating drum, FIG. 7 is a side sectional view mainly illustrating the ball bearing, FIG. 8 is a bottom view of a portion excluding the wire pressing portion in a state where the wire is wound around the rotating drum, and FIG. 9 is a perspective view of the state where the lighting fixture is suspended. FIG.

  The lighting lifting device includes a main body casing 10 that forms an outer shell of the lifting device main body 1, a rotating drum 2 that is rotatably supported in the main body casing 10, and a drive motor 5 that rotationally drives the rotating drum 2. The main body is composed of the wire 6 wound around the outer peripheral portion of the rotating drum 2.

The main body casing 10 is attached to the ceiling and includes an upper case 10a and a lower case 10b.
The upper case 10 a is configured by a substantially cylindrical side wall portion 11, a top plate portion 12 provided at the upper end opening of the side wall portion 11, and a rotating drum housing portion 14 provided at the center portion of the top plate portion 12. . The top plate portion 12 has a substantially circular opening 13 formed in the central portion thereof, and a substantially cylindrical accommodating portion side wall 14a is continuously provided below the inner edge of the opening 13, and the accommodating portion side wall 14a The rotating drum storage part 14 which is provided with the storage part bottom wall 14b at the lower end and opens upward is formed.

  A device such as a drive motor 5 and a pulley 7 around which a wire 6 is wound, which will be described later, are attached to the top plate portion 12. The rotating drum accommodating portion 14 has a substantially bottomed cylindrical shape that opens upward as described above, and accommodates the support shaft 16 that supports the rotating drum 2 in the inside thereof.

  The rotating drum 2 has a substantially cylindrical shape composed of two members, that is, a drum main body 3 and a wire presser portion 4 attached to the drum main body 3. The outer peripheral portion is parallel to the rotating surface and has an entire circumference. A single groove 20 in which the wire 6 is wound and stored is formed. In the present embodiment, the rotary drum 2 is arranged so that the rotation axis thereof is vertical (vertical) and the substantially plane including the concave groove 20 is in the horizontal direction. The drum body 3 is made of a resin composed of a substantially cylindrical main body 31 and a main body bottom 32 provided at the lower end of the main body 31, and the main body 32 has a substantially circular shape at the center. An opening 32a is formed. The main body barrel 31 is accommodated in the rotary drum accommodating portion 14, is formed to have a smaller diameter than the inner diameter of the accommodating portion side wall 14 a, a gear portion 31 a is formed on the outer periphery of the upper end portion, and the drive motor 5. The gear portion 51 of the output shaft 50 is engaged with the gear portion 51. The drive motor 5 is attached to the lower surface of the top plate so as to be adjacent to the side of the rotary drum housing portion 14, and an opening (not shown) is formed in a portion of the rotary drum housing portion 14 adjacent to the drive motor 5. Through this opening, the gear portion 51 of the output shaft 50 of the drive motor 5 and the gear portion 31a of the main body trunk portion 31 are engaged with each other.

  On the lower surface of the main body bottom portion 32, a convex step portion 33 having a substantially circular shape in plan view for projecting the bottom portion of the concave groove 20 is projected downward. In this embodiment, the convex step portion 33 is divided into three equal parts in the circumferential direction, a gap S is formed between the adjacent convex step portions 33, and the end of the wire 6 is fixed to this portion. I will explain later. The shape of the lower surface of the main body bottom portion 32 is a circular shape that overlaps with the main body barrel portion 31 in plan view, but the outer diameter of the convex step portion 33 is smaller than the lower surface of the main body bottom portion 32 and the diameter of the main body barrel portion 31. The outer peripheral side surface 33a of the convex step portion 33 is the bottom surface 20a of the concave groove 20. The wire pressing portion 4 is attached to the lower surface of the convex step portion 33. The wire pressing portion 4 is made of a plate-like metal having an annular shape in plan view, and the shape in plan view is formed substantially the same as the main body bottom portion 32 of the drum main body 3. When the wire pressing portion 4 is attached to a convex stepped portion 33 projecting on the lower surface of the main body bottom portion 32 so as to overlap the main body bottom portion 32 in plan view, the upper surface of the wire pressing portion 4 is attached to the main body bottom portion 32 of the drum main body 3. It will be arranged at a distance from the lower surface, and will be a groove 20 in which the wire 6 is wound up and stored. The width of the groove 20 is substantially the same as or slightly longer than the diameter of the wire 6. For example, the width of the groove 20 is about 1.2 mm with respect to the diameter φ1.05 mm of the wire 6. In the present embodiment, the width of the groove 20, that is, the distance between the upper surface of the wire pressing portion 4 and the main body bottom portion 32 of the drum main body 3 can be adjusted. In attaching the wire pressing part 4 to the main body bottom part 32 of the drum main body 3, in this embodiment, the screw hole 42 for fixing is drilled in the wire pressing part 4 at nine places in the circumferential direction, and the screw of the main body bottom part 32 is provided. A through hole 36 is formed in a portion corresponding to the hole 42, and an adjustment screw 43 is inserted into the through hole 36 from the upper surface side of the main body bottom 32 and screwed into the screw hole 42. When the screw 43 is rotated, the adjustment screw 43 is idled with respect to the main body bottom 32 and the relative position does not change, the screwing position with the wire presser 4 is changed, and the distance between the wire presser 4 and the main body bottom 32 is changed. The width of the groove 20 will change. A spring 44 is compressed and fitted between the wire pressing portion 4 and the main body bottom portion 32 on the adjustment screw 43.

  A ball bearing 35 is provided on the bottom of the rotating drum 2 at a portion that contacts the housing bottom wall 14b of the rotating drum housing 14 on which the rotating drum 2 is placed. This is one in which cylindrical ball accommodating portions 35a are formed at six locations in the circumferential direction of the lower surface of the main body bottom portion 32 of the drum body 3 of the rotary drum 2, and the balls 35b are accommodated therein, and the ball accommodating portion 35a. The inner diameter of the ball housing 35a is larger than the diameter of the ball 35b, and the inner diameter of the lower end opening of the ball housing portion 35a is smaller than the diameter of the ball 35b. A presser part that restricts the upward movement of the ball 35b is provided in the upper part of the ball storage part 35a, and the ball 35b received in the ball storage part 35a protrudes downward from the lower end opening of the ball storage part 35a. It can be exposed and rotated freely. Further, the wire presser portion 4 attached to the lower surface of the drum main body 3 has an insertion hole 41 formed in a portion corresponding to the ball storage portion 35 a, and a cylindrical ball storage portion through the insertion hole 41. 35a protrudes downward. As a result, the rotatable ball 35b is positioned at the lowermost end of the rotary drum 2.

  The rotating drum 2 rotates while being fitted to the support shaft 16. The support shaft 16 has a cylindrical body 16a having a substantially cylindrical shape that is fitted into the body body 31 of the drum body 3 of the rotating drum 2, and the rotating shaft of the rotating drum 2 is rotated by the cylindrical body 16a. The shaft 16 is guided so as not to be displaced, and is attached to the upper case 10a by fixing a flange 16b provided continuously from the upper end of the cylindrical body 16a to the outside in the horizontal direction.

  The wire 6 wound and accommodated in the rotary drum 2 has one end fixed to the rotary drum 2 and the other end fixed to the lighting fixture 8 (see FIG. 8). In the present invention, the wire 6 is There are a plurality of wires, and the plurality of wires 6 are wound and housed in the single groove 20. In FIG. 8, reference numeral 81 denotes a power cord, and reference numeral 82 denotes a cord reel housed in the lighting fixture 8. In the present embodiment, there are three wires 6, and each wire 6 is fixed to the bottom of the groove 20 at equal intervals (120 ° intervals in the present embodiment). That is, as described above, when inserted into the inside of the convex step portion 33 through the gap S between the convex step portions 33 divided into three equal parts in the circumferential direction, the main body bottom portion 32 or the wire pressing portion 4 is fixed.

  Here, when the rotating drum 2 is rotated, the wires 6 are arranged in a direction substantially tangential to the outer periphery of the rotating drum 2 (specifically, the outermost winding wound in the concave groove 20 of the rotating drum 2). The wire 6 is wound / delivered while being stretched in the tangential direction of the wire 6. However, since a plurality of wires 6 are wound / delivered in the same concave groove 20, these wires 6 are viewed in plan view as shown in the figure. Is wound / delivered in a bowl shape. The wire 6 led out from the rotating drum 2 changes in the direction in which it is stretched by the pulley 7 described above and extends downward. The accommodating portion side wall 14a located on a straight line connecting the portion where the wire 6 is wound around the outermost wire 6 of the concave groove 20 of the rotating drum 2 and the pulley 7 around which the wire 6 is wound The wire insertion hole 15 is formed, and interference between the wire 6 and the accommodating portion side wall 14a is avoided. Thereby, the lighting fixture 8 is suspended by the wire 6, and the wire 6 is wound and delivered by the rotation (forward rotation and reverse rotation) of the rotary drum 2, and the lighting fixture 8 is moved up and down.

  As described above, in the present invention, in the case where the lighting fixture 8 is suspended by the plurality of wires 6, all the plurality of wires 6 are wound and housed in the groove 20 of one line of the rotary drum 2. Thus, the groove 20 formed on the rotating drum 2 can be completed with one line, the width of the groove 20 formed on the rotating drum 2 can be shortened, and the length of the rotating drum 2 in the direction of the rotation axis can be shortened. The lifting device can be reduced in size and space.

  In addition, since the substantially flat surface including the concave groove 20 of the rotating drum 2 is disposed horizontally, the vertical length of the rotating drum 2 can be shortened and the vertical length of the lighting lifting device can be shortened. .

  In addition, the rotating drum 2 is made up of separate members of the drum main body 3 and the wire presser 4, and the inner wall of the groove 20 is formed by each member, so that one member (resin in this embodiment) There is no depression such as the groove 20 in the drum body 3), a slide mold is required, the mold structure is complicated, and the manufacturing cost is not increased. Since 20 is one item, the number of components is two, so the number of components is increased and the cost is increased, and the manufacturing cost is not increased.

  Further, since the substantially flat surface including the concave groove 20 of the rotating drum 2 is disposed so as to be horizontal, the vertical length of the rotating drum 2 can be shortened, and the vertical length of the lighting lifting device can be shortened. Further, the mounting height of the pulley 7 can be made the same and the dimensions of the pulley 7 can be made the same, so that the parts can be shared.

  Further, the wire 6 is locked to the rotating drum 2 at an equiangular interval of 360 ° / n (n is the number of the wires 6), and is led out in a substantially tangential direction of the outer periphery of the rotating drum 2. The length of the wire 6 can be the same dimension, the types of parts can be reduced, and when the lighting fixture 8 (particularly the round lighting fixture 8) is suspended, the wire to the side of the lighting fixture 8 is used. 6 can be arranged in a regular polygonal shape, and can be easily suspended in a balanced manner. Further, by making the width of the concave groove 20 adjustable, the groove width can be easily set corresponding to the wire 6 having a different diameter according to the required suspension load.

It is the perspective view seen from the rotating drum of one Embodiment of this invention, the drive motor, and the pulley. It is the whole disassembled perspective view seen from the downward direction of embodiment same as the above. It is a disassembled perspective view of the drum main body and wire press part seen from the downward direction of the state which attached the wire to the rotating drum (drum main body and wire press part) in the same as the above. It is a sectional side view of the rotating drum same as the above. It is the perspective view seen from the upper side of the meshing state of the gear part of a drum main body, and the gear part of a drive motor in the same as the above. It is side sectional drawing of the state which attached the spindle to the drum main body in the same as the above. It is a principal part expanded side sectional view same as the above. It is a bottom view of the part except a wire press part in the state where a wire was wound around the same rotating drum. It is a perspective view of the state which suspended the lighting fixture by the raising / lowering apparatus for illumination of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Lifting device main body 10 Main body casing 14 Rotating drum accommodating part 2 Rotating drum 20 Groove 3 Drum main body 31a Gear part 32 Main part bottom part 33 Convex step part 33a Outer peripheral side surface 35 Ball bearing 4 Wire pressing part 5 Drive motor 51 Gear part 6 Wire 7 Pulley 8 Lighting equipment

Claims (5)

  An elevating device body attached to the ceiling, a rotating drum rotatably supported by the elevating device body, a drive motor for rotating the rotating drum, and a wire wound around an outer peripheral portion of the rotating drum; A lighting fixture is attached to one end of the wire, and the lighting fixture is freely raised and lowered by winding the wire around the rotating drum by the rotation of the rotating drum or sending it from the rotating drum. And a plurality of wires, and an outer peripheral portion of the rotary drum is provided with a single concave groove extending parallel to the rotation surface and extending over the entire circumference. An illuminating lifting device characterized by being wound and housed in the groove so as to have a bowl shape in a plan view in a plane.   2. The lighting lifting device according to claim 1, wherein a substantially flat surface including the concave groove of the rotating drum is disposed so as to be horizontal.   The wire is locked to the rotating drum at an equiangular interval of 360 ° / n (n is the number of wires) and led out in a substantially tangential direction of the outer periphery of the rotating drum. The lighting lifting apparatus according to 2.   The rotating drum is composed mainly of a drum body having a wall portion serving as one inner wall of the groove and a wire pressing portion having a wall portion serving as the other inner wall of the groove, and the drum body portion, A wall portion serving as a bottom surface of the concave groove is formed on at least one of the wire pressing portions, and a gap between both the drum main body portion and the inner wall of the concave groove of the wire pressing portion is substantially the same as or slightly larger than the thickness of the wire. The lighting lifting device according to any one of claims 1 to 3, wherein the wire pressing portion is fixed to the drum main body portion so as to face each other via the wire.   5. The lighting lifting device according to claim 4, wherein a gap between both the wall portions serving as inner walls of the concave groove of the drum main body portion and the wire pressing portion is variable.

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