JP3224328U - Baton lifting device - Google Patents

Abstract

Provided is a low-cost baton elevating device in which the baton does not move in accordance with the elevating motion without any increase in complexity and size, there is no accident of disconnection of a wire, and the device is downsized. A baton elevating device comprises wires 2a, 2b connected to the baton, pulleys 3a, 3b for turning the wires inward in the length direction of the baton, and turning horizontally and perpendicular to the length direction of the baton. A drive pulley 4 having a shaft and a wire connected to the inside of two grooves 5a and 5b, a motor 6 for rotating the drive pulley in the normal and reverse directions, and a case 8 for fixing and surrounding the pulley, the drive pulley and the motor Consists of [Selection diagram] FIG.

Description

  The present invention relates to a baton lifting device that lifts and lowers various suspended objects such as various panels, posters, and production devices in conference rooms, banquet halls, gymnasiums, theaters, and the like. More specifically, it is compact and manufactured at a low cost. The present invention relates to a lifting and lowering device for a baton.

  The baton device is composed of a long baton maintained in a horizontal state for fixing various suspended objects, and an elevating device that is fixed to a ceiling or the like at a position where the baton is to be installed, and elevates and lowers the baton. It is connected by a string such as a wire or belt and hangs the baton under the lifting device, and the lifting device moves the baton up and down by extending or contracting the string. It was.

  As a principle of raising and lowering the baton by the string-like body, for example, there is a method in which the baton is moved up and down by directly pulling up or stretching the wire, and the wire driving means is performed by manually winding or returning the wire. Some (for example, refer patent document 1), and others using mechanical means, such as an electric hoist (for example, refer patent document 2).

  In addition, a pulley is provided on the rotating body of the lifting device, and a string-like body such as a belt or a wire is wound around this pulley, and the rotating body is driven to rotate forward and reverse by a drive motor or the like, whereby the string-like wound around the pulley One that rolls up and down the body and moves the baton up and down (for example, see Patent Document 3), and one that uses cloth fabrics such as screen fabrics for lifting and lowering the baton without using a string-like body such as a wire. Yes (see, for example, Patent Document 4).

JP-A-8-245185 (FIG. 1) Utility model registration No. 3064484 (Fig. 1) Utility Model Registration No. 3038934 (FIGS. 1, 2, 13, and 14) Utility Model Registration No. 3130688 (FIGS. 1 and 3)

  By the way, a mechanism for raising and lowering a wire or the like that suspends a baton usually transmits a motor-driven or manual rotational force to the take-up drum, and the take-up drum rotates forward and backward to take up the string-like body. Or by pulling out.

  This take-up drum has a spiral groove in the drum, and there is a method in which the wire is moved in the lateral direction of the drum along with the take-up, and the wire is wound up in a spiral form. The baton also moves sideways.

  On the other hand, a side plate is provided on both sides of the rotating drum with a wire width therebetween, and the wire is wound in such a manner that the wires are sequentially stacked in the both side plates (for example, FIG. 14)), this method has the advantage that the baton does not move laterally depending on the vertical position of the baton because the wire is taken in and out of the drum at substantially the same position on the left and right. For this reason, at the beginning of winding of the wire and at the end of winding, the position where the wire hangs moves in the front-back direction. This also has a problem that the baton moves slightly back and forth strictly in the case of Patent Document 4 which uses cloth cloth instead of wire.

  If the wire for hanging the baton is hung from the fixed pulley (branch pulley 8) and the wire is wound up at another part as in the above-mentioned Patent Document 1, the baton accompanying the up-and-down movement of the baton is obtained. There is an advantage that there is no movement back and forth and left and right.

  However, in this case, if the pulling of the left and right wires is not synchronized well, the baton may tilt as the elevator moves up and down, the wire path becomes complicated and repair at the time of failure becomes difficult, and the mechanism itself is complicated and expensive. It will be a lifting device.

  FIG. 5 shows a system in which a fixed pulley 12 is provided on the winding drum 11, and the wire 13 from the baton is temporarily received by the fixed pulley 12, and then wound around the winding drum 11. ing.

  However, while the fixed pulley 12 hangs the wire 13 at the same place and feeds it to the winding drum 11, the winding drum 11 changes the winding position of the wire 13 as described above. Depending on the winding position of the wire 13 of the drum 11, for example, the wire 13 at the winding start position (solid line) and the wire 13 at the winding end position (dotted line) are inclined with a large angle of the wire 13 sent from the fixed pulley 12. In this case, however, the angle of the wire 13 may be too large and may come off the fixed pulley 12.

  In order to prevent this, if the distance between the take-up drum 11 and the fixed pulley 12 is increased, the wire 13 will not have an angle, but this will increase the size of the lifting device itself.

  The object of the present invention is to solve the above-described problems in the lifting device of the baton, without causing the baton to move due to the lifting and lowering movement of the baton without complicating and increasing the size of the device. The object is to provide a baton lifting device that is free from accidents and is small in size and low in cost.

  In order to solve the above-described problems, the present invention is directed to a baton elevating device comprising a long baton and an elevating mechanism for elevating and lowering the baton, wherein the elevating mechanism is one of two connecting portions of the baton. Two pulleys that are connected at the ends, two pulleys that redirect two wires extending in the vertical direction with the baton suspended, and the length of the baton in the horizontal direction. A drive pulley having a rotation axis perpendicular to the direction and having the other end of the two wires connected to the inside of two grooves provided on the outer peripheral surface in the direction along the outer periphery; and It consists of a motor that allows forward / reverse rotation, and a pulley, a drive pulley, and a case that surrounds the motor. The drive pulley pulls out and rewinds the two wires from the groove. Like It is the baton of the lifting device.

  According to this device, the two wires that suspend the baton are suspended from two pulleys fixed in the case of the lifting device. The baton does not move back and forth and left and right.

  In addition, the wire drawing and winding has a rotating shaft that is horizontal and perpendicular to the length direction of the baton, and two wires are provided in two grooves provided on the outer peripheral surface in the direction along the outer periphery. This is done by forward and reverse rotation of the drive pulley to which the other end of the wire is connected, so that the depth of the wire at the position where the wire is pulled out from the drive pulley is different at the start of winding of the wire and at the end of winding of the wire. Even in such a case, the winding angle of the wire around the pulley only changes, the wire does not have an angle in the lateral direction with respect to the pulley, and an accident in which the wire comes off hardly occurs.

  In addition, since the wire does not move laterally with respect to the pulley, the distance between the pulley and the drive pulley can be shortened. The distance between the wires can be shortened, and as a result, the case of the lifting device itself can be reduced in size, leading to cost reduction of the device.

It is a partially transparent perspective view which shows an example of the raising / lowering apparatus of the baton of this device. It is a perspective view which shows an example of the raising / lowering apparatus of the baton of this device. (A) is a permeation | transmission front view which shows the other example of the raising / lowering device of the baton of this invention, (B) is the permeation | transmission left side view. It is a permeation | transmission bottom view which shows the other example of the raising / lowering apparatus of the baton of this invention. It is explanatory drawing which shows the relationship between the pulley of an example of the raising / lowering apparatus of the conventional baton, and a wire.

Embodiments of the present invention will be described below with reference to the accompanying drawings.
1 to 4 show an embodiment of the baton lifting device of the present invention. An example of the baton lifting device shown in the perspective views of FIGS. 1 and 2 and the baton lifting device shown in FIGS. 3 and 4 are shown. Other examples of the lifting device are different in the arrangement of details, but the portions denoted by the same reference numerals are portions having similar functions.

  The baton 1 can be fixed at an arbitrary position between the highest position and the lowest position while maintaining the horizontal state, and the material thereof is not particularly limited, but usually, mainly from the balance of rigidity and weight. Metal such as steel is selected, and the shape is a long cylindrical shape or a pipe shape, and if necessary, a long fixture for fixing suspended objects along the length of the baton 1 ( A plurality of (not shown) are provided.

  The baton 1 is moved up and down by moving the wires 2a and 2b connected to the left and right portions of the baton 1 by an elevating mechanism.

  The wires 2a and 2b are made of metal capable of withstanding the weight of the baton 1 and various suspended objects (not shown) attached to the baton 1, but have a strength enough to suspend the baton 1 together with the suspended object. The material is not particularly limited as long as it is a synthetic resin or fiber.

  An elevating device that moves the baton 1 up and down while maintaining the horizontal by moving the two wires 2a and 2b up and down evenly is fixed to the ceiling or the like by an appropriate means, and can store the wires 2a and 2b while maintaining the vertical state. The casing 8 is accommodated in a case 8 having an approximately rectangular shape and having a groove-shaped opening 9 on the lower surface.

  The structure of the lifting mechanism is the same as the distance between the two attachment positions of the wires 2a and 2b attached to the baton 1, and is attached to the vicinity of the ceiling in the case 8 in the horizontal direction of the baton 1. It consists of a pair of pulleys 3 a and 3 b having rotating shafts orthogonal to each other, a driving pulley 4 having a rotating shaft that is horizontal and perpendicular to the length direction of the baton 1, and a motor 6 that drives the driving pulley 4.

  Although the motor 6 itself has the rotation axis as the length direction of the baton 1, the drive pulley 4 is driven by converting the direction of the output shaft into a direction perpendicular to the length direction of the baton 1 by an adjacent well-known conversion mechanism. doing.

  Two grooves 5 a and 5 b are provided on the outer peripheral surface of the drive pulley 4 in a direction along the outer periphery. The opposite ends of the wires 2a and 2b on the side connected to the baton 1 are connected to the bottoms of the grooves 5a and 5b.

  The connecting portion of the wire 2a to the groove 5a and the connecting portion of the wire 2b to the groove 5b are symmetrical with respect to the rotational axis at the center of the drive pulley 4, and the wires 2a and 2b are changed to the grooves 5a and 5b. At the time of connection, for example, the connection position of the baton 1 and the wires 2a and 2b is adjusted so that the baton 1 suspended by the wires 2a and 2b via the pulleys 3a and 3b is in a horizontal state.

  The groove 5a and the groove 5b are the same depth, and even if the wires 2a and 2b are wound up to the extent that the baton 1 is lifted, the wires 2a and 2b protrude from the grooves 5a and 5b. Make it deep enough not to be.

  With the wires 2a and 2b connected to the grooves 5a and 5b of the drive pulley 4, the drive pulley 4 is rotated counterclockwise in the front view of FIG. 2a is wound around the drive pulley 4 from below into the groove 5a, and the right wire 2b is wound around the drive pulley 4 from above into the groove 5b.

  At this time, the wires 2a and 2b are wound in a state where they are sequentially overlapped in the grooves 5a and 5b, respectively, but their winding radii are increased almost the same, so that the wires 2a and 2b are driven pulley 4 The baton 1 is lifted up while maintaining the level because it is wound up to a uniform length according to the rotation of.

  The winding position of the wire 2a around the drive pulley 4 is initially close to the center of the drive pulley 4 and approaches the outer periphery of the drive pulley 4 as it is wound, but the wire 2a winds around the pulley 3a. It can be wound up without any problem just by increasing the angle slightly from the beginning.

  On the other hand, the position of the groove 5a with respect to the pulley 3a does not sway from side to side according to winding, and the wire 2a does not have an angle from side to side as in the conventional example shown in FIG. 2a does not come off the pulley 3a.

  On the other hand, the winding position of the wire 2b with respect to the driving pulley 4 is close to the center of the driving pulley 4 at the beginning and approaches the outer periphery of the driving pulley 4 as it is wound, but the wire 2b is a pulley. It is wound up without any problem just by slightly reducing the angle of winding with respect to 3b from the beginning.

  Further, the angle of the wire 2b with respect to the pulley 3b is not changed similarly to the relationship between the pulley 3a and the wire 2a, and the wire 2b is not detached from the pulley 3b.

  When the baton 1 rises to a predetermined maximum rising position due to the rotation of the drive pulley 4, the limit switch 7 counts the number of rotations of the drive pulley 4 and determines that the predetermined number of rotations has been reached, and stops driving the motor 6. Then, the rise of the baton 1 stops.

  Next, when lowering the baton 1, the motor 6 is rotated in the opposite direction to the upward direction, and the drive pulley 4 is rotated clockwise in the front view of FIG. The drive pulley 4 is pulled out from the grooves 5a and 5b and lowered. When the predetermined lowest position or the wires 2a and 2b are pulled out from the grooves 5a and 5b and are fully extended, the limit switch 7 is activated to stop the driving of the motor 6 and the lowering of the baton 1 is stopped.

  It should be noted that the raising and lowering movement is controlled by a control device (not shown) of the motor 6 so that the baton 1 can be stopped at an arbitrary position regardless of whether the baton 1 is raised or lowered.

  As described above, in the lifting device of the above embodiment, even if the distance between the pulleys 3a and 2b for winding the wires 2a and 2b at the fixed position and the drive pulley 4 for winding the wires 2a and 2b is narrow, the wires 2a and 2b are pulleys. 3a and 3b, the distance between the wires 2a and 2b connected to the baton 1 (the distance between the pulleys 3a and 3b) can be reduced to the extent that there is no hindrance to the vertical movement of the baton 1. Can be made compact, leading to cost reduction.

  The embodiment of the baton lifting device of the present invention is as described above, but the baton lifting device of the present invention is not limited to this embodiment, and the scope of the purpose of the present invention Can be implemented with appropriate changes.

1 Baton 2 (2a, 2b) Wire 3 (3a, 3b) Pulley 4 Drive pulley 5 (5a, 5b) Groove 6 Motor 7 Limit switch 8 Case 9 Opening

Claims (1)

In a baton lifting device comprising a long baton and a lifting mechanism for moving the baton up and down,
The lifting mechanism has two wires connected at one end at two connecting portions of the baton;
Two pulleys for redirecting two vertically extending two wires with the baton suspended inward in the baton length direction;
Driving pulley having a rotating shaft that is horizontal and perpendicular to the length direction of the baton, and the other ends of the two wires are connected to the inside of two grooves provided in the direction along the outer periphery on the outer peripheral surface When,
A motor that can freely rotate the drive pulley forward and backward,
It consists of a pulley, a drive pulley and a case that surrounds the motor.
A baton lifting and lowering device characterized in that two wires are pulled out and rewound from a groove by forward rotation and reverse rotation of a drive pulley.

Images