JPS5935504Y2 - elevator - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an elevator, and includes a fixed drum supported vertically on a fixed part having a spiral groove formed on its outer periphery, and a spiral groove having the same pitch as the pitch of the spiral groove of the fixed drum. A guide post having a groove formed thereon is screwed into each spiral groove of the fixed drum and the guide post, and a wire outlet is formed at a position corresponding to the spiral groove of the fixed drum,
A wire guide that moves up and down as the guide post rotates; a rotating means that rotates and drives the guide post to revolve around the fixed drum; and a wire guide that has one end fixed to the fixed part and is wound around the fixed drum. The wire is rotated and the other end is taken out from the wire take-out port of the wire guide, and the wire taken out from the wire take-out port is guided under the fixed drum, and the wire is made to hang down. , the object attached to one end of the wire can be moved up and down smoothly, the object attached to the wire will not be displaced from side to side when going up and down, and the microphone wire can be used as a wire when suspending a microphone etc. To provide an elevator that does not require sliding electronics, does not generate noise, is small and lightweight, and is easy to install.

Conventionally, as shown in Fig. 1, an elevator for a microphone, etc. is attached so that a drum 2 rotates in conjunction with the rotating shaft of a motor 1, and a microphone wire 3 is wound around the surface of this drum 2. The microphone 4 is raised or lowered depending on the amount of wrapping.

In addition, 5 is a sliding electronic part, one end of the microphone wire 3 is connected to this sliding electronic part, and is taken out from the sliding electronic part.

However, an elevator having such a structure has a drawback that the position of the microphone changes from side to side depending on the amount of winding of the microphone wire, that is, as the microphone moves up and down.

Furthermore, since a slider must be used to take out the microphone wire to the outside, there is a fatal drawback in that poor contact occurs in this part, resulting in noise.

In addition, since the motor and drum are installed separately, the size of the elevator is increased accordingly, and installation of the elevator is troublesome and costly, and it is also heavy, for example, 150 kg.
g, so sufficient safety must be ensured during installation.

The present invention eliminates the above-mentioned drawbacks and will be described below with reference to its embodiments.

FIG. 2 is a side view of the elevator according to the present invention, and FIG. 3 is a partially sectional view of the elevator.

In the figure, numeral 11 is a vertically elongated hollow drum made of a relatively lightweight and durable resin such as terrylin, and a spiral groove 12 is formed on the outer surface of the drum.

A motor 13 is built inside the drum 11, and the motor 13 is attached to a motor frame 14, which is attached to the bottom base 11' of the drum 11.

Further, the rotation shaft 13' of the motor 13 is connected to the bottom base 11'.
The motor 13 is connected to a rotary frame 15 attached to the lower end of the drum so as to be rotatable relative to the drum.
When the rotary frame 15 is driven, the rotary frame 15 rotates.

A guide post 16 having threaded grooves of the same pitch as the grooves 12 of the drum 11 is attached to the rotary frame 15 using a bearing so as to be rotatable relative to the rotary frame 15.

A chain sprocket 17 is fixedly attached to this guide post 16, and a chain 19 is disposed between this chain sprocket 17 and a chain sprocket 18 fixed to the bottom base 11'. , the guide post 16 is configured to rotate around the axis as the rotary frame 15 rotates.

A cylindrical wire guide 21 having a screw hole 20 that is screwed into a screw groove of the guide post 16 is disposed on the guide post, and a wire outlet 22 is formed on the side of the wire guide 21.

This wire outlet 22 is formed at a position where it is always on the groove of the drum 11.

The wire guide 21 has a pulley 2 made of Dellys etc.
3 is attached to the rotary frame 15, and a pulley 24 made of Delrin or the like is also attached to the rotary frame 15, and a pulley 24 made of Delrin or the like is attached so that the microphone wire 25 is brought over the approximate center of the rotary frame. pulleys 26 and 27 are attached.

This pulley 26 is attached to a fixed rotating shaft,
The pulley 27 has a rotating shaft that can be moved in position in accordance with the size of the microphone wire 25, and the position can be changed by, for example, an adjustment screw 28.

Although pulleys 23, 24, and 27 are not equipped with a special drive mechanism to rotate these pulleys themselves,
The pulley 26 is provided with a rotation transmission mechanism that rotates the pulley 26 itself in conjunction with the rotation of the guide post 16 and the like.

For example, this rotation transmission mechanism includes a chain sprocket 29 that rotates as the chain 19 rotates, a gear 30 attached to the rotation shaft of this chain sprocket, a gear 31 that meshes with this gear. A rotating shaft 32 to which this gear 31 is attached, a gear 33 attached to the other end of this rotating shaft 32, a gear 34 meshing with this gear 33, and a rotating shaft 35 to which this gear 34 is attached. The pulley 26 is fixed to the rotating shaft 35, and as the chain sprocket 29 rotates, the pulley 26 is rotationally driven.

One end of the microphone wire 25 is fixed to the top base 11'' of the drum 11, and the microphone wire 25 is passed through the inside of the drum 11, wound in order from the lowest groove formed on the drum, and then pulled out from the wire outlet 22. It is inserted between pulleys 26 and 27 via pulleys 23 and 24.

In addition, 36 is a microphone, 37 is a drum mounting tool,
38 is a cord connected to the motor, 39 and 40 are microswitches provided at the upper and lower ends of the drum, and the wire guide 21 is connected to this microswitch.
When one end of the motor comes into contact with the motor, the motor automatically stops.

Next, to explain the operation of the above-mentioned elevator, when the switch is turned on and the motor is driven to rotate its rotating shaft 13' left and right, the rotary frame 15 also rotates to the left, and the guide post 16 moves toward the drum 11. While rotating, the guide post itself rotates to the right.

As a result, the wire guide 21. rotates counterclockwise and descends one pitch per rotation of the guide post.

Then, the microphone wire 25 is unwound from the drum and gradually comes out from the wire outlet.

Further, the pulley 26 is rotated by the drive of the motor, and the microphone wire 25 is held between the pulleys 26 and 27, so that the microphone wire is always pulled out in the direction of the arrow by the rotation of the pulley 26.

Conversely, to raise the microphone, the opposite effect is used.

and to stop the microphone from lowering or raising,
Turn off the switch and stop driving the motor.

Note that even if the microphone wire is completely unwound or wound, the motor is automatically stopped by the microswitch.

In the above operation, the microphone wire is unwound due to the weight of the microphone without having to specifically drive the pulley 26, but if the microphone reaches the ground or the microphone wire is caught on something and loosens. In such a case, the microphone wire can be prevented from fraying in the groove of the drum 11 by specially driving the pulley 26 and pulling the microphone wire by the pulleys 26 and 27 in synchronization with the feeding speed of the microphone wire. As a result, the microphone wire will not be damaged and the microphone wire will be unwound in a good manner.

In addition, since the position between the pulley 26 and the pulley 27 is located approximately at the center of the rotary frame, even if the wire outlet of the wire guide is rotated, the hanging position of the microphone does not change from side to side. This is extremely convenient when using a microphone.

In addition, even when the wire guide rotates, the wire outlet is always located above the groove of the drum, so that the microphone wire will not be pinched and damaged when taking out the microphone wire, and the elevator itself will not be damaged. It never breaks down.

Also, since one end of the microphone wire can be fixed to the drum and there is no need to use a slider as previously described, no noise is generated when the microphone is used.

In addition, since the motor is built inside the drum, the elevator itself can be made smaller, and since the drum and pulley are made of relatively lightweight Delrin, the weight can be reduced. It can be made lighter.

Therefore, since the elevator is small and lightweight, the installation of the elevator is simple, and the installation is also easy in terms of safety.

As described above, the elevator according to the present invention includes a fixed drum having a spiral groove formed on its outer periphery and supported vertically on a fixed part, and a spiral groove having the same pitch as the pitch of the spiral groove of the fixed drum. The guide post is screwed into the respective spiral grooves of the fixed drum and the guide post, and a wire outlet is formed at a position corresponding to the spiral groove of the fixed drum, and the guide post is moved up and down by rotation of the guide post. a wire guide that rotates the guide post with respect to the fixed drum and a rotating means that rotates the guide post, one end of which is fixed to the fixed part and wound around the fixed drum, the other end of which is fixed to the fixed drum; The wire taken out from the wire take-out port of the wire guide and the wire taken out from the wire take-out port are guided under the fixed drum, and the guide means for hanging the wire is attached to one end of the wire when going up and down. It prevents objects from moving left and right, the wire can be unwound from the tram without fraying, and the wire is not damaged or malfunctions, and when using microphone wire as the wire to hang the microphone. Even if there is, there is no need to use sliding electronics, so there is no noise when using the microphone, and furthermore, the microphone can be made light and easy to install, making it easy to install.

[Brief explanation of the drawing]

Figure 1 is an explanatory diagram of a conventional elevator for microphones, etc.;
Figures 3 and 3 are explanatory diagrams of an elevator for microphones, etc., according to the present invention. 11...Drum, 12...Groove, 15...Rotary frame, 16...Guide post, 17.18...
Chain sprocket, 21...Wire guide, 2
2...Wire outlet, 23.24.26.27
...Pulley, 25...Microphone wire

Claims (1)

[Scope of utility model registration request] a fixed drum having a spiral groove formed on its outer periphery and supported vertically on a fixed part; a guide post having a spiral groove having the same pitch as the pitch of the spiral groove of the fixed drum; and the fixed drum and the guide post. a wire guide that is screwed into each spiral groove of the stationary drum, and has a wire outlet formed at a position corresponding to the spiral groove of the fixed drum, and that is raised and lowered by rotation of the guide post; a rotating means for revolving and rotationally driving a fixed drum; and a wire having one end fixed to the fixed part and wound around the fixed drum, and the other end being taken out from a wire outlet of the wire guide. and a guide means for guiding the wire taken out from the wire take-out port below the fixed drum and making the wire hang down.