JPH0259722B2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] This invention relates to a keyboard work desk in which a keyboard desk and a display (hereinafter referred to as CRT) desk are movable within a predetermined range. .

[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
is a desk board, and 18 is a keyboard console.

[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
The vertical height and angle of 6 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 are generally adjustable 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 does not allow the lower body to sit in an uncomfortable position. This caused the problem of causing 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 these problems, and an object of the present invention is to provide a desk for keyboard work that can simultaneously move a keyboard desk and a CRT desk vertically, and also move the CRT desk further up and down. shall be.

[Means for solving problems]

The keyboard work desk according to this invention includes:
This device is equipped with a vertical movement mechanism that can simultaneously move the keyboard console and CRT console vertically within a predetermined range, and a CRT vertical mechanism that can move the CRT console vertically within a predetermined range.

[Effect]

In this invention, the height of the keyboard console and furthermore the height of the CRT console changes to follow the height of the keyboard console, and the height of the CRT console can be independently moved up and down within a predetermined range. , even very tall or very short workers can adjust the height of the keyboard desk to suit their height.
The height of the CRT desk can be adjusted over a wide range, reducing fatigue when working on the keyboard.

〔Example〕

Hereinafter, one embodiment of the present invention will be described based on the drawings. Fig. 1 is a front view showing an embodiment of the present invention, Fig. 2 is a plan view, Fig. 3 is a side view, and Fig. 4 is a front view showing an embodiment of the present invention.
The figure is a control circuit diagram, and FIG. 6 is a perspective view.

1 is the main 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 sliding bearing, 8 is the sliding shaft upper holder, 9 is the ball screw 1 bearing, 10 is ball screw 1, 11 is bevel gear 1, 12 is horizontal axis bearing, 13 is horizontal axis bracket, 14 is horizontal axis 1, 15 is horizontal axis 2, 16 is motor bracket for keyboard desk, 17 is for keyboard Motor coupling, 18 is the keyboard motor, 19 is the keyboard upper and lower plate, 20 is the spacer block,
21 is CRT table bracket 1, 22 is CRT table bracket 2, 23 is CRT table bracket 3,
24 is a CRT shaft lower holder, 25 is a CRT sliding shaft, 26 is a CRT sliding bearing, 27 is a CRT sliding shaft upper holder, 28 is a CRT horizontal shaft bearing, 29 is a ball screw 2, 30 is a ball screw 2 bearing, 31 is a Spacers 1 and 32 are helical gears 1, 33 are washers,
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 cup. Ring, 41 is CRT bracket 5, 42 is
CRT brackets 6 and 43 are CRT desk frames,
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, 4
7 is a front and rear sliding shaft, 48 is a front and rear sliding shaft bearing, 49 is a front and rear sliding shaft bracket 3, 50 is a front and rear ball screw bracket 1, 51 is a front and rear ball screw bracket 2, 52 is a front and rear ball screw bearing, 53 is a front and rear ball screw, 54 are front and rear ball screw brackets 3 and 5
5 is the front and rear plate, 56 is the front and rear motor bracket, 57 is the front and rear motor coupling, and 58 is the front and rear motor bracket.
CRT brackets 7 and 59 are CRT plates,
60 is a CRT bracket 8, 61 is a CRT support plate, 62 is a rotating shaft, 63 is a rotating shaft bearing, 64
is tilt bevel gear 1, 65 is gear guide, 66
is tilt bevel gear 2, 67 is stroke screw,
68 is the tilt bracket 1, 69 is the thrust spacer, 70 is the sliding bearing, 71 is the gear shaft, 72 is the sliding bearing 2, 73 is the tilt plate 1, 75 is the cam floor, 76 is the tilt spacer, 77 is the tilt bracket 2, 78 is tilt plate 2, 79
is tilt plate 3, 80 is slide plate,
81 is a slide guide, 82 is a keyboard position detection bracket, 83 is a keyboard detection rotation worm foil, 84 is a keyboard upper limiter bracket, 85 is a keyboard limiter, 86 is a keyboard lower limiter bracket, 87 is a keyboard lower limiter, and 88 is a keyboard lower limiter. Limittadock, 89
CRT desk position detection bracket, 90 is CRT upper limiter bracket, 91 is CRT lower limiter bracket, 92 is CRT upper limiter, 93 is CRT upper limiter bracket.
CRT limiter dot, 94 is front and rear position detection bracket, 95 is 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 is a tilt limiter 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 armrests, 113 is a bellows, 114 is a foot cover for the main body, 115 is a foot rear cover, and 116 is both armrests. Cover, 117 is the back cover of both the slide arms, 118 is the back cover of both the slide arms, 119 is the CRT plate, 120 is the keyboard plate, 121 is the caster, 122 is the mechanism part holder, 124 is the keyboard drive mechanism, 125
is a mechanism frame, 126 is a keyboard sliding mechanism,
127 is ball nut 1, 128 is keyboard bevel gear 1, 129 is keyboard bevel gear 2,
130 is the keyboard bevel gear 3, 131 is the keyboard bevel gear 4, 132 is the arm plate,
133 is the CRT vertical sliding mechanism, 134 is the ball nut 2, 135 is the CRT frame bracket, 1
36 is a frame bracket, 136 is a frame spacer, 137 is a CRT front and rear drive mechanism, and 138 is a
CRT front and rear sliding mechanism, 139 is CRT front and rear motor,
140 is the front and rear bevel gear 1, 141 is the front and rear bevel gear 2, 142 is the ball nut 3, and 143 is the front and rear bevel gear 2.
CRT tilt drive mechanism, 144 is a tilt motor bracket, 145 is a tilt motor, 146 is a tilt motor coupling, 147 is a keyboard bevel gear 5, 148 is a CRT vertical drive mechanism, 149
is helical gear 2, 150 is 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 lower plate 2 and the upper plate 3 firmly fixed above the lower plate by the fixed shaft 4 on the mechanism receiving portions 123 on both sides. It consists of a fixed sliding shaft 6 and a sliding bearing 7 that is fitted onto the sliding shaft 6 and firmly attached to the keyboard upper and lower plates 19, allowing the keyboard upper and lower plates 19 to smoothly move linearly in the vertical direction. The structure is such that Keyboard drive mechanism 124
is a ball screw 1 bearing 9 parallel to 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 1 screwed into this ball screw 10 and fixed to the keyboard upper and lower plates 19;
127, a keyboard motor 18 supported on the mechanism frame 125 by a keyboard motor bracket 16, a keyboard bevel gear 1,128 fixed to the output shaft end of this keyboard motor 18 via a keyboard motor coupling 17, this bevel gear Keyboard bevel gear 2, 129 on the left and right meshing with 1, keyboard bevel gear 3,
A keyboard bevel gear 137 and a keyboard bevel gear 5, 147 are fixed to one end of the shaft, respectively, and horizontal shafts 1, 14, horizontal shafts 2, 15, and keyboard ball screws are rotatably supported by a mechanism frame by a horizontal shaft bracket 13. It is composed of a keyboard bevel gear 4, 131 fixed to the lower end and a bevel gear 11 meshing with a bevel gear 5, 147, transmits the rotational motion of a keyboard motor to a keyboard ball screw 10, and causes 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 consists of CRT brackets 1 and 21 that are symmetrically fixed to the keyboard upper and lower plates 19 via spacer blocks 20.
and the CRT brackets 2 and 22.
A CRT sliding shaft is firmly fixed between the CRT sliding shaft lower holder 24 and the CRT sliding upper holder 27 between the letter-shaped CRT brackets 6 and 42 and the CRT brackets 3 and 23 fixed to the upper ends thereof. moving axis 25,
Fixed to the CRT frame bracket 135,
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 consists of CRT bracket 6,
42 and the CRT brackets 3 and 23, the CRT is rotatably supported by a ball screw bearing 30, etc.
The upper and lower ball screws 29 are screwed into the CRT upper and lower ball screws 29, and the CRT frame bracket 1
ball nut 2,134 fixed to 35;
Helical gears 1, 32 fixed to the lower ends of the CRT upper and lower ball screws 29, CRT brackets 1, 21
A CRT table motor 37 is coupled to the CRT table motor 37, and helical gears 2, 1 are fixed to the output end of the CRT table motor 37 via a CRT table motor coupling 40.
49. A helical gear 3,150 that meshes with the helical gear 2,149 is fixed, and a helical gear 4,15 that meshes with the helical gear 1,32 is attached to the other end.
1. Fix the helical gear 5, 152, and connect the CRT horizontal shaft coupling 39 and the CRT horizontal shaft bearing 28, 2.
Connected in a straight line and rotatably supported by 9
Consists of CRT horizontal shaft 36, CRT2, 38,
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 ball nuts 2, 13
4 is moved in a straight line 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 and rear drive mechanism 137 includes a front and rear ball screw bracket 150 and front and rear ball screw brackets 2 and 51 disposed at the front and rear of the CRT desk frame 43, and a front and rear ball screw 53 rotatably provided via front and rear ball screw bearings 52, and a CRT table 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 1,140 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 front and rear bevel gears 2, 141 fixed to the front ends of front and rear ball screws 53 meshing with this.
The CRT front and rear sliding mechanism 137 is the CRT desk frame 43
The front and rear sliding shafts 4 are fixed to the front and rear sides by front and rear sliding shaft brackets 144 and 245, respectively.
7. It is composed of a front and rear sliding bearing 48 that is fixed to a front and rear bracket 49 and fitted to a front and rear sliding shaft 47, and has a structure that allows smooth movement in the front and rear direction.

Furthermore, the CRT front and rear drive mechanism 137 has ball nuts 3 and 14 screwed into the front and rear ball screws 53.
2 is included. Front and rear ball screw brackets 3,54 to which the ball nuts 3,142 are fixed;
A CRT tilt drive mechanism 143 is disposed on a front and rear plate 55 to which two left and right front and rear sliding shaft brackets 3 and 49 are fixed.

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.
Tilt bevel gear 1, 64 fixed via 6
Tilt bevel gears 2 and 66 meshed with these tilt bevel gears 1 and 64, this tilt bevel gear 2
It consists of a stroke screw 67 that is screwed into the nut of the central shaft and moves up and down within the gear guide, and cam floors 75 provided at both ends of a tilt plate 73 fixed to the upper end of the stroke screw 67.

The cam floor 75 has tilt plates 2, 78,
It is slidably and rotatably attached to a square hole provided on the back center rear surface of the CRT plate 119 by means of tilt plates 3 and 79. Further, the tilt bevel gears 2 and 66 are rotatably disposed on the tort 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 brackets 8 and 60 are CRT plate 5
9. Combined with CRT bracket 7, 58
It is fixed to the upper end of a front-back sliding bracket 49 connected to the CRT front-back sliding mechanism 138.

Note that the keyboard motor 18, CRT table motor 37, CRT front/rear motor 139, and tilt motor 145 all have control circuits that can switch between forward and reverse rotation, and these forward and reverse rotations , keyboard drive mechanism 124 and CRT
The vertical drive mechanism 148 changes the direction of linear movement upwards and downwards, the CRT longitudinal drive mechanism 137 moves forwards and backwards, and the CRT tilt drive mechanism 143 moves linearly.
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 also equipped with a detection mechanism that detects the 19 inclination angles and their respective states. Descriptions of the configurations of the safety mechanism and position detection mechanism will be omitted.

The general 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 causes the keyboard ball screw 10 supported by the mechanism receiving parts 123 on both sides of the main body frame 1 to be connected to the keyboard bevel gears 1 and 1.
28, the horizontal shafts 1, 14, horizontal shafts 2, 15, bevel gear 11, etc. transmit power, and the keyboard ball screws 10 on both sides rotate, so the ball nuts 1, 127 fixed to the keyboard top and bottom plates 19 move upward. start moving. 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. If the forward/reverse changeover switch 156 continues to be turned ON to the forward rotation contact 159 side, the keyboard plate 120 continues to rise, and when the forward/reverse changeover switch 156 is turned OFF at a height desired by the keyboard operator, it stops at that height. If the forward/reverse selector switch 156 is kept turned ON to the forward rotation contact 159 side, the keyboard plate 120 reaches the upper limit height, the upper limiter 157 is turned OFF, and the power to the keyboard motor 18 is turned OFF. 1
20 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. To 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 caused by the helical gear 2,149, the helical gear 3,150, the helical gear 4,151, the helical gear 5,152, the CRT horizontal shaft 1,36,
The signal is transmitted to the CRT upper and lower ball screws 29 on both sides supported between the CRT brackets 6 and 42 and the CRT brackets 3 and 23 through the CRT horizontal shafts 2 and 38.
causes the ball nut 2,134 to move straight upward. CRT sliding shaft 25 fixed between CRT brackets 3 and 23 and CRT brackets 6 and 42
The sliding bearing 26 and ball nuts 2, 1 fitted in
CRT frame bracket 135 with 34 fixed
move upward smoothly. Therefore,
Fixed to CRT frame bracket 135
The CRT plate 119 supported on the CRT table frame 43 smoothly moves the CRT up and down by the vertical sliding mechanism 148.
You will be guided upwards. Similar to the operation of the keyboard plate 120, the CRT plate 119 can be operated by switching the forward/reverse switch 156 to allow the keyboard operator 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. CRT plate 1
The operation of cutting off the power to the CRT desk motor 37 at the upper and lower limits of 19 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 caused by the front and rear bevel gears 1,140,
The front and rear plates 55 are rotated by 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 2,141.
The ball nut 3,142 fixed to 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 left and right front and rear sliding shaft brackets 3 and 4 are attached to the front and rear plates 55.
9. The CRT plate 119 supported by the CRT brackets 7 and 58, the CRT brackets 8 and 60, and the CRT tilt drive mechanism 143 is guided by the CRT front and back sliding mechanism 138 and moves smoothly forward.

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 controlled by the tilt bevel gears 2, 66 by the tilt bevel gears 1, 64.
The stroke screw 67 screwed into the nut portion of the tilt bevel gears 2, 66 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,
Set the CRT screen in a position that is easy to see. Therefore, the height of the CRT plate 119 can be moved at the same time as the keyboard plate 120, and the CRT plate 119 can also be moved independently, so even if the height is the same, the position of the CRT screen can be changed depending on the difference in sitting height.
That is, by slightly moving the height of the CRT plate 119, the CRT screen can be set at a desired position.

Regardless of whether the person is short or tall, the keyboard operator can simply set the keyboard plate 120 to the desired position and then move the CRT plate 119 a short distance to easily and quickly find the desired CRT screen position. Can be set to Also, when the keyboard plate 120 is adjusted, the CRT plate 1
19 also moves together, so when changing the height of the chair, simply adjust the keyboard plate 120 to match the height of the chair, and you can adjust the positional relationship between the keyboard and CRT according to your physique. While holding them, you can adjust them to the height of the chair.

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

〔Effect of the invention〕

As explained above, this invention has a simple structure in which the keyboard plate is driven in the vertical direction, and at the same time, the CRT plate disposed behind the keyboard plate is moved, and the CRT plate can also be moved in the vertical direction independently of the keyboard plate. By adjusting the height of the keyboard plate first and then slightly adjusting the height of the CRT plate, both tall and short people can work on the keyboard in their preferred posture without causing fatigue. It is also easy to set the height while maintaining the positional relationship between the CRT and keyboard, and it is a low-cost keyboard with a simple and easy structure that requires less movement of the CRT plate. This has the effect of providing desks.

[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 bearing, 29 is the CRT
Upper and lower ball screws, 37 is CRT desk motor, 47
are front and rear sliding shafts, 48 are front and rear sliding bearings, 53 are front and rear ball screws, 112 are both armrests, 119 is
CRT plate, 120 is keyboard plate,
124 is a keyboard drive mechanism, 126 is a keyboard vertical sliding mechanism, 127 is a ball nut 1, 13
3 is a CRT vertical sliding mechanism, 134 is a ball nut 2, 139 is a CRT front and rear motor, 142 is a ball nut 3, 143 is a CRT tilt drive mechanism, 14
5 is a tilt motor, 148 is a CRT vertical drive mechanism,
67 is a stroke screw, and 153 is a forward/reverse changeover switch. Note that the same reference numerals in each figure indicate the same or corresponding parts.

Claims (1)

[Claims] 1. A main body frame, a keyboard sliding mechanism provided on this main body frame, a keyboard driving mechanism that drives this keyboard sliding mechanism, a keyboard upper and lower plate that is attached to the keyboard sliding mechanism and moves linearly in the vertical direction, and this keyboard upper and lower plate. A keyboard plate fixed to the above, a CRT sliding mechanism fixed to the upper and lower keyboard plates,
This is fixed to the top and bottom plates of the keyboard above.
A CRT vertical drive mechanism that drives the CRT sliding mechanism up and down, a CRT desk frame that is attached to the CRT sliding mechanism and moves linearly in the up and down direction, and a CRT mounted on the CRT desk frame located behind the keyboard plate. It is composed of a plate that drives the above keyboard plate in the vertical direction and simultaneously drives the above keyboard plate in the vertical direction.
A keyboard work desk characterized in that the CRT plate also moves and the CRT plate can be driven vertically independently of the keyboard plate.