JPH0556311A - Fader device - Google Patents

Abstract

PURPOSE:To make the control torque of a fader lever uniform, and to adjust the control torque to match a user. CONSTITUTION:Flat gears 8 and 9 for which a pair of fader levers 14 and 15 which control two kinds of video signals are attached, are attached to the middle part of a fixed shaft 5 while holding a spacer 10 therebetween so as to be freely rotatable, and a fixed collar 6 and a movable color 24 are provided on both edges of the fixed shaft 5. The movable collar 24 is energized with the fixed collar 6 side by a compressing spring 27 whose attaching load can be freely adjusted by an adjusting screw 31 screwed into the edge part of the fixed shaft 5, so that respective fader levels 14 and 15 is in pressurize-contact with the fixed color 6 and the spacer 10, and the holding force of each of fader levers 14 and 15 can be obtained by the friction. Thus, the control torque can be arbitrarily set to match the user by adjusting the attaching load of the compressing spring 27.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fader device installed on a television adjusting table or the like for dissolving or superimposing arbitrary two kinds of video signals.

[0002]

2. Description of the Related Art Conventionally, a fader device installed on a television adjusting table or the like for dissolving or superimposing two kinds of video signals has a structure as shown in FIG. 2, for example. That is, a pair of mounting frames b are fixed to the lower surface of a panel a such as a television adjusting table so that they are opposed to each other, and two variable resistors c are disposed below the mounting frames b so that the rotating shafts d face each other. Installed.

A fixed shaft e is provided between the intermediate portions of the mounting frame b.
Is fixed, and two large spur gears f having a large diameter are rotatably supported on the fixed shaft e. These spur gears f are fixed to the rotary shaft d of the variable resistor c and have a small diameter. It is meshed with the spur gear g. The lower ends of a pair of fader levers h are fixed to the upper portion of a spur gear f having a large diameter, and the upper end side of each fader lever h is projected above the panel a from a slit i formed in the panel a. The handle j is fixed to the upper end of each. A pipe-shaped interlocking member k is fitted on one of the handles j. By moving the interlocking member k toward the other handle j and connecting the respective handles j, the respective fader levers h are moved. It can be operated in conjunction with each other.

On the other hand, a collar n pressed against a spur gear f by a compression spring m is provided at both ends of the fixed shaft e.
The rotation of these collars n is locked by a stopper o screwed into a mounting frame b, and the spur gear f is narrowly attached to a flange p formed at an intermediate portion of a fixed shaft e. Each fader lever h is held in the operating position by a frictional force.

The conventional fader device configured as described above is
By rotating each fader lever h independently in the above direction, the spur gear f to which the fader lever h is fixed is attached.
Rotates the spur gear g attached to the rotary shaft d of the variable resistor c, the two types of video signals can be controlled separately by the variable resistor c, and each fader lever h is interlocked by the interlocking member k. 2 by operating
It is also possible to control different types of signals at the same time.

[0006]

However, in the above-mentioned conventional fader device, the collar n biased by the compression spring m is used.
Since the structure is such that the spur gear f is tightly fitted between the flange p of the fixed shaft e and the operating torque of the fader lever h and the holding force at the operating position, the dimensions of parts such as the collar n vary. However, if there is variation in the mounting load of the compression spring n, variation in the operating torque and holding force of the fader lever h will occur, resulting in poor operability. In addition, when it is desired to adjust the operating torque according to the user, the compression spring m must be replaced, which requires a lot of time and labor for the adjusting work. The present invention has been made to solve the above-mentioned conventional drawbacks, and a fader device that does not cause variations in the operating torque and holding force of the fader lever and that can easily adjust the operating torque to suit the user is provided. It is intended to be provided.

[0007]

In order to achieve the above-mentioned object, the present invention comprises two spur gears rotatably supported on an intermediate portion of a fixed shaft mounted on a panel by a mounting frame,
A spacer is provided between these spur gears so that it cannot rotate and is movable in the axial direction of the fixed shaft, and an adjusting screw that is provided at one end of the fixed shaft and is screwed into the end of the fixed shaft. A movable collar urged toward the fixed collar by an adjustable compression spring, a pair of fader levers respectively attached to the spur gears, and a spur gear attached to a rotary shaft meshes with the spur gears. It is provided with a plurality of variable resistors.

[0008]

With the above structure, the operating torque of the fader lever and the holding force at the operating position can be set arbitrarily by simply adjusting the mounting load of the compression spring via the adjusting member with the adjusting screw, so that the operation feeling of the user can be improved. It is possible to easily set the operating torque according to the above and adjust the variation of the operating torque due to the dimensional variation of the components.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described in detail with reference to the drawing shown in FIG.

FIG. 1 is a sectional view of a fader device. In FIG. 1, reference numeral 1 is a panel of a television adjusting console or the like. On the lower surface of the panel 1, the upper ends of a pair of substantially Z-shaped mounting frames 2 are fixed by a fixing tool 33, and two variable resistors are attached to the outer surface on the lower end side of these mounting frames 2. The rotary shafts 3a and 4a are attached so that the rotary shafts 3 and 4 face each other.

A fixed shaft 5 is horizontally inserted between the intermediate portions of the mounting frame 2, and a flange 5a is projectingly provided at one end of the fixed shaft 5.

The flange 5a of the fixed shaft 5a is fixed to the mounting frame 2 by a fixing tool 7 for fixing a fixed collar 6 fitted to one end of the fixed shaft 5 to the mounting frame 2 and Two large spur gears 8 and 9 having a large diameter are rotatably attached to an intermediate portion of the fixed shaft 5 with a spacer 10 interposed therebetween.

A set screw 11 is screwed into the spacer 10, and the tip of the set screw 11 is inserted into a groove 5b formed in the outer peripheral surface of the fixed shaft 5 in the axial direction. On the other hand, the spacer 10 can move in the axial direction but cannot rotate.

The lower portions of the spur gears 8 and 9 are meshed with spur gears 12 and 13 having small diameters fixed to the rotary shafts 3a and 4a of the variable resistors 3 and 4, and the spur gears 8 and 9 are also engaged.
The lower ends of the pair of fader levers 14 and 15 are fixed to the upper part of the with a fixing tool 16.

Then, these fader levers 14 and 15
One end side of the is projected to the upper side of the panel 1 by a slit 1a formed in the panel 1, and grips 17 and 18 are fixed to the outer surface of the upper end portion by a fixing tool 19, respectively.

A pipe-shaped interlocking member 20 is movably inserted into one of the handles 17 and 18 toward the other handle 18 side, and by moving the interlocking member 20 toward the handle 18 side, The fader levers 14 and 15 can be interlocked with each other.

On the other hand, a movable collar 24 is provided on the other end of the fixed shaft 5.
Is movably inserted in the axial direction.

In the movable collar 24, a stopper 25 protruding from the mounting frame 2 is fitted in the notch 24a so that the rotation is locked, and the movable collar 24 is fitted in the other end side of the fixed shaft 5. A compression spring 27 is interposed between the spring seats 26, and the movable collar 24 is biased toward the fixed collar 6 by the compression spring 27.

At the other end of the fixed shaft 5, a mounting frame 2 is attached.
The adjusting member 30 is fitted from the outside of the.

The adjusting member 30 has a shape in which a flange 30b is projected from one end of a tubular portion 30a, and a tip of an adjusting screw 31 inserted into the center of the flange 30b is formed at the other end of the fixed shaft 5. While being screwed into the hole 5c, the other end of the tubular portion 30a is in contact with the spring seat 26 by the light transmission 2a formed in the mounting frame 2.

Next, the operation of the fader device constructed as described above will be described. When two types of video signals are produced separately, the fader levers 14 and 15 are individually operated backward in the state shown in FIG.

As a result, each fader lever 14, 1
Since the spur gears 8 and 9 to which 5 is fixed are rotated and the rotary shafts 3a and 4a of the variable resistors 3 and 4 are rotated via the spur gears 12 and 13 meshing with these spur gears 8 and 9, 2 It becomes possible to control each type of video signal separately.

At this time, the fader levers 14 and 15 are pressed against the fixed collar 6, the spacer 10 and the movable collar 24 by the action of the compression spring 27 for urging the movable collar 24. The operation torque can be obtained and the operation position can be maintained.

On the other hand, when controlling two kinds of signals at the same time, the interlocking member 20 is moved to the side of the clap 18 to move the respective handles 17, 18 to each other.
Since the fader levers 14 and 15 are integrally operated in this state by connecting the two, it is possible to simultaneously control two types of video signals by the variable resistors 3 and 4.

Further, when it is desired to adjust the operating torque according to the operation feeling of the user, the adjusting screw 31 is rotated to move and adjust the spring seat 26 in the axial direction of the fixed shaft 5, so that the mounting load of the compression spring 27 is increased. Since it changes, the operation torque can be arbitrarily set according to the user.

Also, when a plurality of sets of fader operations are installed on the panel 1, by performing the above adjustment operation,
The operation torque of each fader device can be set uniformly.

[0027]

As described in detail above, according to the present invention, the operating torque of the fader lever and the holding force at the operating position can be arbitrarily set only by rotating the adjusting screw and adjusting the mounting load of the compression spring. Even if there are dimensional variations in the parts that generate the frictional force, the operating torque and holding force of each fader lever can be adjusted uniformly, and the operating torque can be easily set in a short time according to the operation feeling of the user. You will be able to.

Further, since the operating torques of a plurality of sets of fader devices set on the panel can be set uniformly by the same adjustment, the operability of the television adjusting table can be improved.

[Brief description of drawings]

FIG. 1 is a sectional view of a fader device according to an embodiment of the present invention.

FIG. 2 is a sectional view of a conventional fader device.

[Explanation of symbols]

 1 Panel 2 Mounting Frame 3,4 Variable Resistor 5 Fixed Shaft 6 Fixed Collar 8,9 Spur Gear 10 Spacer 12,13 Spur Gear 14,15 Fader Lever 24 Movable Collar 27 Compression Spring 31 Adjustment Screw

Claims (1)

[Claims] 1. A pair of spur gears rotatably supported on an intermediate portion of a fixed shaft mounted on a panel by a mounting frame and non-rotatably provided between these spur gears, and in the axial direction of the fixed shaft. A movable spacer, a fixed collar fixed to one end of the fixed shaft, and an adjustment screw screwed to the other end of the fixed shaft and screwed to the end of the fixed shaft. A movable collar urged toward the fixed collar by a compression spring whose load is adjustable, a pair of fader levers attached to the spur gear, and a spur gear attached to a rotary shaft mesh with the spur gear. A fader device with two variable resistors.