JPH0259721B2 - - Google Patents

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention enables a keyboard plate and a disk plate (hereinafter referred to as CRT) to be moved up and down within a predetermined range, and the CRT plate can be moved forward and backward. This invention relates to a keyboard work desk that is tiltable.

[Conventional technology]

FIG. 6 is a perspective view of a conventional keyboard work desk disclosed in, for example, Japanese Utility Model Application Publication No. 59-160330, with a personal computer set on the desk.

In Figure 6, 4 is the equipment's upper and lower steps;
CRT, 7 is a keyboard, 8 is a device upper and lower stick holder, 12 is a device mounting plate, 15 is a movable screw, 17
18 is a desk plate, and 18 is a keyboard plate.

[Problem that the invention seeks to solve]

A conventional keyboard work desk is constructed as described above, with the CRT 16 placed on the equipment mounting plate 12,
By moving the device vertical stick 4 up and down and rotating it around the movable screw 15, the CRT
6's vertical height and the angle of the CRT screen could be adjusted.

Therefore, in conventional keyboard work desks, the height of the keyboard desk is fixed at a certain predetermined value.
Only the top, bottom and angle of the CRT can be adjusted to the keyboard operator's preference. Therefore, there is a problem in that a worker who is tall or short cannot adjust the height of the keyboard and is forced to work on the keyboard in an extremely uncomfortable position. Chairs can generally be adjusted vertically, so workers can adjust the height of the chair to suit their height to make it easier to work on the keyboard, but this method puts the lower body in an uncomfortable position.
The problem was that it caused fatigue.

Recently, there are keyboard work desks on the market that can independently adjust the height of the keyboard desk and the height of the CRT desk, but in order to allow very tall workers to work on the keyboard in a comfortable position, it is necessary to The CRT desk had to have a very large vertical movable range, and had to have a vertical movement mechanism with a large movable range, resulting in a complicated structure and high cost for the desk.

This invention was made to solve such problems, and includes keyboard plates and CRTs.
The CRT plate can be moved up and down at the same time, and the CRT plate can be moved up and down and back and forth independently of the keyboard plate.
To obtain a desk for keyboard work whose plate can be tilted.

[Means for solving problems]

The keyboard work desk according to this invention includes:
It is equipped with a vertical movement mechanism that can simultaneously move the keyboard plate and CRT plate vertically within a predetermined range, a mechanism that can move the CRT plate vertically and longitudinally within a predetermined range, and a mechanism that can adjust the screen angle of the CRT.

[Effect]

In this invention, the height of the keyboard plate and further the height of the CRT plate can be changed at the same time, and the height of the CRT plate, the front-rear direction, and the angle of the CRT plate can be changed independently of the keyboard plate, Even for very tall or very short workers,
Adjust the height of the keyboard plate according to your height, sitting height, footwear height, etc.
The height of the CRT plate can be continuously set to a desired position over a wide range, and the forward and backward position of the CRT plate as well as the angle of inclination of the CRT plate can be continuously changed to improve visual acuity and surrounding brightness. Since the CRT screen can be set at a position and angle that is easy to see, judging from the appearance, keyboard workers can reduce fatigue when working on the keyboard.

〔Example〕

An embodiment of the present invention will be described below with reference to the drawings. 1 is a front view showing an embodiment of the present invention, FIG. 2 is a plan view, FIG. 3 is a side view, FIG. 4 is a control circuit diagram, and FIG. 6 is a perspective view.

1 is the main body frame, 2 is the lower plate, 3 is the upper plate, 4 is the fixed shaft, 5 is the sliding shaft holder, 6 is the sliding shaft, 7 is the bearing, 8 is the sliding shaft upper holder, 9 is for the pole screw 1 Bearing, 10 is pole screw 1, 11 is bevel gear 1, 12 is horizontal shaft bearing, 13 is horizontal shaft bracket, 14 is horizontal shaft 1,
15 is a horizontal shaft 2, 16 is a keyboard desk motor bracket, 17 is a keyboard motor coupling, 18 is a keyboard motor, 19 is a keyboard upper and lower plate, 20 is a spacer block, 21
is CRT table bracket 1, 22 is CRT table bracket 2, 23 is CRT table bracket 3, 24
is the CRT shaft lower holder, 25 is the CRT sliding shaft, 2
6 is a CRT sliding bearing, 27 is a CRT sliding shaft upper holder, 28 is a CRT horizontal axis bearing, 29 is a bolt screw 2, 30 is a pole screw 2 bearing, 31 is a spacer 1, 32 is a Haspa gear 1, 33 is a washer, 34
is CRT horizontal shaft bearing 2, 35 is CRT bracket 4, 36 is CRT horizontal shaft 1, 37 is CRT desk motor, 38 is CRT horizontal shaft 2, 39 is CRT horizontal shaft coupling, 40 is CRT desk motor coupling , 41 is the CRT bracket 5, 42 is the CRT bracket 6, 43 is the CRT desk frame, 44 is the front and rear sliding shaft bracket 1, 45 is the front and rear sliding shaft bracket 2, 46 is the front and rear sliding shaft holder, and 47 is the front and rear sliding shaft. Dynamic shaft, 48 is front and rear sliding shaft bearing, 49 is front and rear sliding shaft bracket 3, 50 is front and rear ball screw bracket 1, 51 is front and rear ball screw bracket 2, 52
are front and rear pole screw bearings, 53 is front and rear pole screw,
54 is the front and rear pole screw bracket 3, 55 is the front and rear plate, 56 is the front and rear motor bracket, 57 is the front and rear motor coupling, 58 is the CRT bracket 7, 59 is the CRT plate, 60 is the CRT bracket 8, and 61 is the CRT support. plate, 62
is a rotating shaft, 63 is a rotating shaft bearing, 64 is a tilt bevel gear 1, 65 is a gear guide, 66 is a tilt bevel gear 2, 67 is a stroke screw, 68 is a tilt bracket 1, 69 is a thrust spacer, 70 is a sliding bearing, 71 is a gear Shaft, 72 is sliding bearing 2, 73 is tilt plate 1, 75 is cam floor, 76 is tilt spacer, 77 is tilt bracket 2, 78 is tilt plate 2, 79 is tilt plate 3, 80 is slide plate, 81 is slide guide, 82 is a keyboard position detection bracket, 83 is a keyboard detection rotating worm foil, 84 is a keyboard upper limiter bracket,
85 is a keyboard limiter, 86 is a keyboard lower limit bracket, 87 is a keyboard lower limit limiter, 88 is a limiter dot, 89 is a CRT desk position detection bracket, 90 is a CRT upper limiter bracket, 91 is a CRT lower limiter bracket, 92 is a CRT lower limiter bracket. CRT upper limit limiter, 93 is CRT limiter dot, 94 is front and rear position detection bracket, 9
5 is a potentiometer bracket, 96 is a potentiometer, 97 is a position detection spur gear, 98 is a rack, 99 is a front and rear limiter bracket, 102
104 is a tilt limit bracket, 104 is a level foot, 105 is a cover 1, 106 is a cover frame, 107 is an electrical component mounting frame, 108 is an electrical component mounting plate, 109 is a front cover frame, 110 is a front cover, 111 is a back cover, 112 is both sode arms, 113 is bellows,
114 is the main body foot cover, 115 is the foot back cover,
Reference numeral 116 indicates both switch arm covers, 117 indicates both switch arm back covers, 118 indicates both switch arm back covers, 119 indicates a CRT plate, 120 indicates a keyboard plate, 121 indicates a caster, 122 indicates a mechanical part holder, 124 indicates a keyboard drive mechanism, and 125 indicates a Mechanism frame, 126, keyboard sliding mechanism, 127
is pole nut 1, 128 is keyboard bevel gear 1, 129 is keyboard bevel gear 2, 130
is keyboard bevel gear 3, 131 is keyboard bevel gear 4, 132 is arm plate, 133
is the CRT vertical sliding mechanism, 134 is the ball nut 2,
135 is a CRT frame bracket, 136 is a frame bracket, 136 is a frame spacer,
137 is a CRT front and rear drive mechanism, 138 is a CRT front and rear sliding mechanism, 139 is a CRT front and rear motor, 140 is a front and rear bevel gear 1, 141 is a front and rear bevel gear 2,
142 is the ball nut 3, 143 is the CRT tilt drive mechanism, 144 is the tilt motor bracket, 1
45 is a tilt motor, 146 is a tilt motor coupling, 147 is a keyboard bevel gear 5, 1
48 is a CRT vertical drive mechanism, 149 is a helical gear 2, 150 is a helical gear 3, 151 is a helical gear 4, and 152 is a helical gear 5.

The configuration of the main points of this invention will be described below. The main body frame 1 includes a foot portion 122 having a level foot 104 and a caster 121 on both sides, a mechanism receiving portion 123 supporting a keyboard sliding mechanism 126 behind the foot portion, and a mechanism receiving portion 123 that connects both foot portions 122 and supports a keyboard drive mechanism 124. It is composed of a mechanical frame 125.

The keyboard sliding mechanism 126 has a sliding shaft holder 5 in the vertical direction between the mechanism receiving parts 123 on both sides, the lower plate 2, and the upper plate 3 which is firmly fixed above the lower plate by the fixed shaft 4. It is composed of a fixed sliding shaft 6 and a sliding bearing 7 coupled to this sliding shaft 6 and firmly attached to the keyboard upper and lower plates 19, so that the keyboard upper and lower plates 19 can smoothly move linearly in the vertical direction. It has a structure. Keyboard drive mechanism 124
A ball screw 1 bearing 9 is provided along with the mechanism receiving portions 123 on both sides and the keyboard sliding mechanism 126.
Keyboard ball screw 1 rotatably supported by
0, a ball nut 11 screwed into this ball screw 10 and fixed to the keyboard upper and lower plates 19;
27. Keyboard motor 18 supported by keyboard motor bracket 16 on mechanism frame 125; keyboard bevel gear 1128 fixed to the output shaft end of keyboard motor 18 via keyboard motor coupling 17; A keyboard bevel gear 2129 and a keyboard bevel gear 3130 are connected to each other on the left and right ends of the shaft, and a keyboard bevel gear 4 is located on the other end.
137, a horizontal shaft 114 to which a keyboard bevel gear 5147 is fixed, and a horizontal shaft 114 rotatably supported on the mechanism frame by a horizontal shaft bracket 13, a horizontal shaft 215;
It is composed of a keyboard bevel gear 4131 fixed to the lower end of the keyboard ball screw, and a bevel gear 11 meshing with a bevel gear 5147, and transmits the rotational motion of a keyboard motor to the keyboard ball screw 10 to cause the keyboard upper and lower plates 19 to move linearly in the vertical direction.

The keyboard plate 120 is horizontally attached to both arm arms 112 fixed to the upper and lower keyboard plates 19.

The keyboard upper and lower plates 19 are connected to the CRT vertical sliding mechanism 133 via the spacer block 20.
A CRT vertical drive mechanism 148 is fixed.

The CRT vertical sliding mechanism 133 is connected to a CRT bracket 121 that is symmetrically fixed to the keyboard upper and lower plates 19 via spacer blocks 20.
The CRT sliding shaft lower holder 24 and the CRT sliding upper holder 27 are connected between the L-shaped CRT bracket 642 connected to the CRT bracket 222 and the CRT bracket 323 fixed to the upper end of the CRT bracket 642.
The CRT sliding shaft 25 is firmly fixed to the CRT frame bracket 135, and the sliding bearing 26 is fixed to the CRT frame bracket 135 and fitted to the CRT sliding shaft 25.
To smooth the vertical movement of a CRT desk frame 43 fixed to the upper part of a CRT frame bracket 135.

The CRT vertical drive mechanism uses the CRT bracket 64.
2 and the CRT bracket 323, the CRT upper and lower ball screws 29 are rotatably supported by ball screw bearings 30, etc.
A ball nut 2134 is screwed into the CRT frame bracket 135 and fixed to the CRT frame bracket 135, and a helical gear 13 is fixed to the lower end of the CRT upper and lower ball screws 29.
2. CRT connected to CRT bracket 121
A table motor 37, a helical gear 2149 fixed to the output end of the CRT table motor 37 via a CRT table motor coupling 40, a helical gear 3150 that meshes with this helical gear 2149, A helical gear 4151 and a helical gear 5152 that mesh with the gear 132 are fixed, and a CRT horizontal shaft 136 and a CRT horizontal shaft 238 are connected in a straight line and rotationally supported by a CRT horizontal shaft coupling 39 and CRT horizontal shaft bearings 28, 29.
The rotational movement of the CRT desk motor 37 is transmitted to the left and right CRT upper and lower ball screws 29, and the pole nut 2134 is moved linearly in the vertical direction.

The CRT desk frame 43 has a CRT at approximately the center position.
A longitudinal drive mechanism 137 and a CRT longitudinal sliding mechanism 138 are installed symmetrically. The CRT front-rear drive mechanism 137 includes a front-rear pole screw bracket 150 and a front-rear pole screw bracket 251 disposed at the front and rear of the CRT desk frame 43, and a front-rear pole screw 53 rotatably provided via a front-rear ball screw bearing 52, and a CRT desk frame. 43. A CRT front and rear motor 139 is fixed to the front with a front and rear motor bracket 56, and a front and rear bevel gear 1140 is fixed to the output shaft of the CRT front and rear motor 139 via a front and rear motor coupling 57. It consists of a front and rear bevel gear 2141 fixed to the front end of the front and rear pole screw 53 meshing with this. The CRT front-rear sliding mechanism 137 is fitted into a front-rear sliding shaft 47 and a front-rear bracket 49 fixed to the front and rear of the CRT desk frame 43 by a front-rear sliding shaft bracket 144 and a front-rear sliding shaft bracket 245. 47 and a front and rear sliding bearing 48 fitted into the shaft 47, it has a structure that allows smooth movement in the front and rear direction.

Furthermore, the CRT front and rear drive mechanism 137 has a pole nut 3142 screwed into the front and rear pole screw 53.
is included. The front and rear ball screw brackets 354 to which this pole nut 3142 is fixed, and the left and right two
The CRT tilt drive mechanism 14 is attached to the front and rear plates 55 to which the front and rear sliding shaft brackets 349 are fixed.
3 are arranged.

The CRT tilt drive mechanism 143 includes a tilt motor 145 fixed to the front and rear plates 55 by a tilt motor bracket 144, and a tilt motor coupling 14 connected to the output shaft of the tilt motor 145.
The tilt bevel gear 266 is engaged with the tilt bevel gear 164 fixed through the tilt bevel gear 2, and the tilt bevel gear 266 is screwed into the nut part of the central shaft of the tilt bevel gear 2.
Stroke screw 6 that moves up and down inside the gear guide
7. It is composed of cam floors 75 provided at both ends of a tilt plate 73 fixed to the upper end of this stroke screw 67.

The cam floor 75 is connected to the CRT plate 119 by the tilt plate 278 and the tilt plate 379.
It is slidably and rotatably attached to a square hole provided on the rear center back surface of the Further, the tilt bevel gear 266 is rotatably disposed on the tilt bracket 1 by a thrust spacer 69.

The CRT plate 119 includes a part of the cam floor 75 of the CRT tilt drive mechanism 143, etc., and a CRT bracket 86 provided at a symmetrical position in the front.
A rotating shaft 62 and a rotating shaft bearing 63 support the rotating shaft 62 at the upper part of the CRT support plate 61 which is fixed to the CRT so that the rotating shaft 62 becomes a fulcrum for tilting.
CRT bracket 860 includes CRT plate 59,
It is fixed to the upper end of a front-rear sliding bracket 49 connected to a CRT bracket 758 and connected to a CRT front-back sliding mechanism 138.

The keyboard motor 18, the CRT table motor 37, the CRT front and rear motor 139, and the tilt motor 145 all have control circuits that can switch between forward and reverse rotation, and by these forward and reverse rotations, The direction of linear movement of the keyboard drive mechanism 124 and the CRT vertical drive mechanism 148 changes upward and downward, the CRT longitudinal drive mechanism 137 moves forward and backward, and the CRT tilt drive mechanism 143 moves in the forward and backward directions.
The CRT plate 119 is configured to tilt downward from the front and downward from the horizontal.

Note that the keyboard drive mechanism 124, CRT vertical drive mechanism 148, CRT front and back drive mechanism 137, CRT
The tilt drive mechanism 143 has a keyboard motor 18 at the upper and lower limits of its movable range, respectively.
CRT table motor 37, CRT front and rear motor 139,
A safety mechanism for interrupting the control circuit of the tilt motor 145 is installed in each case.

In addition, the vertical positions of the keyboard plate 120 and CRT plate 119, and the CRT plate 1
19 longitudinal position, and CRT plate 1
It is equipped with a detection mechanism that detects 19 inclination angles and their respective states. Descriptions of the configurations of the safety mechanism and position detection mechanism will be omitted.

The schematic configuration of the control circuit of each motor is as shown in FIG.
Both control circuits have the same circuit configuration, and each circuit is configured corresponding to each motor. For example 1
53 is a motor, 154 is a capacitor, 155 is a power source, 156 is a forward/reverse switch, 157 is an upper limiter, 158 is a lower limiter, 159 is a forward rotation contact, and 160 is a reverse rotation contact.

In the keyboard work desk configured as described above, the forward/reverse selector switch 156 of the control circuit of the keyboard motor 18 is connected to the forward rotation contact 159.
When turned on to the side, the keyboard motor 18 rotates in the forward rotation direction. This rotation is caused by the keyboard bevel gear 112 being connected to the keyboard ball screw 10 supported by the mechanism receiving parts 123 on both sides of the main body frame 1.
8. The keyboard ball screws 10 on both sides are rotated by the horizontal shaft 114, the horizontal shaft 215, the bevel gear 111, etc., so that the ball nuts 1 fixed to the keyboard upper and lower plates 19 are rotated.
127 starts moving upwards. The keyboard upper and lower plates 19 are supported by the keyboard sliding mechanisms 126 on both sides of the main body frame 1, that is, the sliding shafts 6 and the sliding bearings 7 attached to the keyboard upper and lower plates 19. Moves up very smoothly. Therefore, the keyboard plate 120 fixed to the keyboard upper and lower plates 19 via the two armrest arms 112 starts to smoothly move upward. Forward/reverse switch 156 to forward rotation contact 159
If the keyboard plate 120 continues to be turned on to the side, the keyboard plate 120 continues to rise, and when the forward/reverse switch 156 is turned off at a height desired by the keyboard operator, it stops at that height. Set the forward/reverse switch 156 to forward rotation contact 1.
59 side, the keyboard plate 120 reaches the upper limit height, and the upper limiter 157 is turned on.
Turn OFF, and energize the keyboard motor 18.
Since it is turned OFF, the keyboard plate 120 stops at the upper limit height. Conversely, when the forward/reverse switch 156 is turned on to the reverse rotation contact 160 side, the keyboard plate 120 moves downward.

Similarly to moving the keyboard plate 120 upward, if the forward/reverse switch 156 is turned OFF when the desired height is reached, the keyboard plate 120 will stop at the desired height. Further, if the keyboard plate 120 continues to be moved downward, it will stop at the lower limit height. Therefore, the keyboard operator can continuously set the height of the keyboard plate to a desired position between the upper and lower height limits. on the keyboard upper and lower plates 19
CRT vertical sliding mechanism 133, CRT vertical driving mechanism 1
48 are fixed, these also move simultaneously with the vertical movement of the keyboard plate 120. Therefore, the CRT vertical sliding mechanism 133 and
The CRT plate 119 is supported on the CRT table frame 43 fixed to the CRT frame bracket 135 fixed to the CRT vertical drive mechanism 148.
It moves up and down as the keyboard plate 120 moves up and down. Then, the forward/reverse selector switch 156 of the control circuit of the CRT desk motor 37 is connected to the forward rotation contact 159.
When turned on to the side, the CRT desk motor 37 rotates in the forward rotation direction. This rotation is performed by helical gear 2149, helical gear 3150, helical gear 4151, helical gear 5152, CRT horizontal shaft 136, CRT horizontal shaft 2.
38, CRT bracket 642 and
It is transmitted to the CRT upper and lower ball screws 29 on both sides supported between the CRT bracket 323,
This CRT upper and lower ball screw 29 is the ball nut 2
134 is moved straight upward. The CRT frame bracket 135 to which the sliding bearing 26 fitted to the CRT sliding shaft 25 fixed between the CRT bracket 323 and the CRT bracket 642 and the ball nut 2134 are fixed is smoothly moved upward. Therefore, the CRT plate 119 supported on the CRT desk frame 43 fixed to the CRT frame bracket 135 can smoothly move the CRT
It moves upward guided by the vertical sliding mechanism 148.
Similar to the operation of the keyboard plate 120, the CRT plate 119 can be operated by switching the forward/reverse switch 156 to continuously change the height of the CRT plate 119 to a height where the display (CRT, etc.) can be easily viewed. Can be set. At the upper and lower limits of CRT plate 119
The operation of cutting off the power to the CRT console motor 37 is the same as the operation of the keyboard plate 120.

Next, turn on the forward/reverse switch 156 of the control circuit for the CRT front/rear motor 139 to the forward rotation contact 159 side.
Then, the CRT front and rear motors 139 rotate in the forward rotation direction. This rotation is transmitted to the front and rear ball screws 53 rotatably supported at the front and rear of the CRT desk frame 43 by the front and rear bevel gears 1140 and 2141, and by the rotation of the front and rear ball screws 53, the front and rear plates 55 are fixed. The ball nut 3142 moves straight forward. The front and rear plates 55 are guided by CRT front and rear sliding mechanisms 138 fixed to the left and right sides of the CRT desk frame 43, respectively, and move smoothly forward. Therefore, the CRT plate 11 supported on the front and rear plates 55 by the left and right front and rear sliding shaft brackets 349, CRT brackets 758, CRT brackets 860, and the CRT tilt drive mechanism 143.
9 is guided by the CRT front and rear sliding mechanism 138 and moves forward smoothly.

Keyboard plate 120 or CRT plate 1
19, the keyboard operator can move the keyboard forward and backward by switching the forward/reverse switch 156 to a position that suits his/her eyesight and is easy to see.
CRT plate 119 can be set. The keyboard plate 120 cuts off the power to the CRT front and rear motors 139 when the front and rear limits of the CRT plate 119 are reached.
The operation is the same as that of .

Furthermore, turn on the forward/reverse selector switch 156 of the control circuit of the tilt motor 145 to the forward rotation contact 159 side.
Then, the tilt motor 145 rotates in the forward rotation direction. The rotation of the tilt motor 145 is transmitted to the tilt bevel gear 266 by the tilt bevel gear 164, and the stroke screw 67 screwed into the nut portion of the tilt bevel gear 266 moves upward.

The CRT plate 119 is pushed up by a slidable and rotatable cam floor 75 attached to the upper end of the stroke screw 67 at the rear center back surface thereof.

The CRT plate 119 is fixed to the CRT bracket 860 at two symmetrical locations in front of it.
Since the CRT fulcrum plate 61 is rotatably supported at the upper part of the rotating shaft 62,
19 slopes forward and downward. Conversely, when the forward/reverse changeover switch 156 is turned on to the reverse rotation contact 160 side, the CRT plate 119 tilts backward and downward. Therefore,
The keyboard operator can arbitrarily set the CRT screen mounted on the CRT plate 119 to a desired angle by operating the forward/reverse changeover switch 156. In addition,
The operation of turning off the current to the tilt motor 145 at the upper and lower limits of the tilt angle of the CRT plate 119 is the same as the operation of the keyboard plate 120.

Next, the person working on the keyboard must first set the height of the chair to a comfortable position, taking into account his/her height and the height of his/her footwear, and then set the height of the chair to a comfortable position for hitting the keys on the keyboard. Place the keyboard plate 120 at the desired height that suits your posture.
When the forward/reverse switch 156 for the keyboard plate 120 is operated and set by moving it up or down, the CRT plate 119 is automatically set at the same time as the keyboard plate 120. Then, the height of the CRT plate 119 is changed by operating the forward/reverse switch 156 for the CRT plate 119,
The forward/reverse position of the CRT plate 119 can be changed by operating the forward/reverse switch 156 for the forward/reverse position of the CRT plate 119, and the inclination angle of the CRT plate 119 can be adjusted by operating the forward/reverse switch 156 for tilting. Users can adjust the height, front and back position, and angle of the CRT screen to suit their own preferences, depending on the lighting conditions in the room, and use simple operations to make the screen easier to see.

Note that in the above embodiment, the keyboard plate 12
0. Each drive mechanism of the CRT plate 119 is composed of parts such as a forward and reverse rotation type motor, a ball screw feeding mechanism, etc., but is not limited to these, and may be composed of a hydraulic feeding mechanism or the like. In this case, it is also possible to have a sliding mechanism.

〔Effect of the invention〕

As explained above, this invention is simple in that when the keyboard plate is driven in the vertical direction, the CRT plate also moves at the same time, and furthermore, the CRT plate can be moved in the vertical direction, front and back directions, and the CRT plate can be tilted, independently of the keyboard plate. Depending on the structure, the keyboard height, CRT height, front/back position, and CRT screen angle can be adjusted according to the brightness of the room, regardless of whether you are tall or short, or have good or poor eyesight. The CRT plate moves at the same time as the keyboard plate, allowing you to easily adjust the height of the CRT and the keyboard while maintaining their front-to-back positional relationship. In addition to being easy to set up, the present invention has the effect of providing a low-cost keyboard work desk with a simple structure that requires only a short vertical movement distance of the CRT plate.

[Brief explanation of the drawing]

Fig. 1 is a front view showing an embodiment of the present invention, Fig. 2 is a top view, Fig. 3 is a side view, Fig. 4 is a perspective view, Fig. 5 is a configuration diagram of the control circuit, and Fig. 6 is a diagram. FIG. 2 is a perspective view of a conventional keyboard work desk. In the figure, 1 is the main body frame, 6 is the sliding shaft,
7 is a sliding bearing, 10 is a keyboard ball screw, 1
8 is the motor for the keyboard, 19 is the upper and lower plate for the keyboard, 25 is the CRT sliding shaft, 26 is the CRT sliding bearing, 29 is the CRT upper and lower ball screw, 37 is the
CRT table motor, 47 is the front and rear sliding shaft, 48 is the front and rear sliding bearing, 53 is the front and rear ball screw, 112 is both the arm, 119 is the CRT plate, 120 is the keyboard plate, 124 is the keyboard drive mechanism, 126 is the keyboard vertical slide 127 is the ball nut 1, 133 is the CRT vertical sliding mechanism,
134 is ball nut 2, 139 is CRT front and rear motor, 142 is ball nut 3, 143 is CRT
Tilt drive mechanism, 145 is a tilt motor, 148
is the CRT vertical drive mechanism, 67 is the stroke screw,
153 is a forward/reverse switch. Note that the same reference numerals in each figure indicate the same or corresponding parts.

Claims (1)

[Claims] 1. In a keyboard work desk that has a keyboard plate on the main body frame and a CRT plate behind this keyboard plate, a keyboard sliding mechanism provided on the main body frame, a keyboard drive mechanism that drives this keyboard sliding mechanism,
A keyboard top and bottom plate that is attached to the keyboard sliding mechanism and moves linearly in the vertical direction, a keyboard plate that is fixed to this keyboard top and bottom plate, and a keyboard plate that is fixed to the keyboard top and bottom plate.
The CRT sliding mechanism is fixed to the upper and lower keyboard plates and drives this CRT sliding mechanism up and down.
A CRT vertical drive mechanism, a CRT desk frame that is attached to the CRT sliding mechanism and moves vertically in a straight line, a CRT plate back and forth sliding mechanism provided on this CRT desk frame, and a CRT plate back and forth sliding mechanism that drives the CRT plate back and forth. Front and rear drive mechanism, front and rear plates that are fixed to the above CRT plate front and rear sliding mechanism and move linearly in the front and back direction, fixed to this front and rear plate.
It consists of a CRT tilt drive mechanism and a CRT plate supported by this CRT tilt drive mechanism, and when the keyboard plate is driven vertically,
The CRT plate also moves at the same time, and the CRT plate can be moved up and down independently of the keyboard plate.
A keyboard work desk that can be driven in the front and rear directions, and can also be tilted to move the CRT plate forward and downward relative to a horizontal state.