JPS6219110A - Desk for keyboard work - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] [Industrial application field] This invention is a keyboard desk and a display.

The present invention relates to a keyboard work desk in which a desk (hereinafter referred to as a CRT) is 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 (top and bottom sticks, +61
11CRT, (7) is the keyboard, (8I is the equipment upper and lower stick holder, H is the equipment mounting plate, (C) is the movable screw,
(IT) is a desk board.

(1111&2 keyboard desk.

[Problem that the invention seeks to solve]

The conventional keyboard work desk is constructed as described above, and by placing the CRT+61 on the equipment mounting plate 03, moving the six equipment upper and lower sticks (4) up and down, and rotating it around the movable screw a1, the 0RT (6 ) could be adjusted in vertical height and angle.

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 workers who are tall or small are unable to adjust the height of the keyboard and are forced to work on the keyboard in an extremely awkward position. Chairs can generally be adjusted vertically, so 9 workers can adjust the height of the chair to suit their height, making it easier to work on the keyboard. It becomes a posture,
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 CRT desk, but K, which allows very tall workers to work on the keyboard in a comfortable posture, is It is necessary to make the vertical movable range of the CRT desk extremely large, and this requires a vertical movement mechanism with a large movable range, resulting in a problem that the structure is complicated and the desk becomes expensive.

This invention was made to solve such 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 in the vertical direction, and further move the CRT desk in the vertical direction. do.

[Means for solving problems]

A keyboard work desk according to this invention.

It 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 KCRT console vertically within a predetermined range.

[Action to solve the problem]

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

[Leprosy case]

Hereinafter, one embodiment of the present invention will be described based on 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 frame, (2142 lower play),
131)'! Upper plate, +41 is fixed shirt)
, (51 is the sliding shaft holder, (6) is the sliding shaft, (7)
is the sliding bearing, (8: is the sliding shaft upper holder 1 (9) is the bearing for the ball screw 1, Q is the ball screw 1, (11)
is bevel gear 1. A3 is a horizontal shaft bearing.

61 is the horizontal axis bracket), (14 is the horizontal axis 1, (I
! 9 is horizontal axis 2, 6102 keyboard car motor bracket, OD is keyboard motor coupling, a
s+'z keyboard motor, aS is keyboard top and bottom plate, cn is spacer block, C1'1fjCR
T car bracket II (2) if CRT table bracket 21 (to) C20RT table bracket) 3, (
ltc RT shaft lower holder, (E) is CRT sliding shaft,
(2) is the CRT sliding bearing, @ is the 0RT sliding shaft upper holder, and (2) is the CRT horizontal shaft bearing.

OI is Polneji 2. On is ball screw 2 bearing, 0υ is spacer 1, (J2 helical gear 1. (to) is washer,
(b)%'1 CRT horizontal shaft bearing 2. Bracket 4 for C'l pull 10RT, (G) is CRT horizontal axis 1. (l is CR
T-table motor.

@ is CRT horizontal shaft 2, 6I is CRT horizontal shaft coupling, 2 is CRT car motor coupling, 1iottCR
T bracket 5. Gla&'! CRT bracket 6
, +40 words (3RT desk frame, f44 & 2 front and rear sliding axis brackets 1, Is is front and rear sliding axis bracket)
2, (48 is the 'X front and rear sliding shaft holder, 0η is the front and rear sliding shaft, hlI is the front and rear sliding shaft bearing, (4I is the front and rear sliding shaft bracket a, 61 is the front and rear ball screw 1 bearing) 1. (51 ) Ball screw bracket around 42) 2.
(52) is the front and rear ball screw bearings.

(53) is the front and rear ball screw, (54) is the front and rear ball screw bracket 3. (55) is the front and rear plate, (5
6) is the front and rear motor bracket, (57) is the front and rear motor coupling, (58)) 20RT bracket 7° (5
9) is a CRT plate, (60) &l OR,
T bracket 8. (61) is the CRT support plate, (<52) is the rotating shaft, (63) is the rotating shaft bearing,
(64)&j tilt bevel gear 1. (65) is the gear guide, (66) is the tilt bevel gear 2, (67)
) is a stroke screw, (68) kj tilt bracket) 1, (69) tj thrust spacer.

(70) is a sliding bearing, (71) is a gear shaft, (7
2) is a sliding bearing. (73) is tilt plate 1,
(75) is the cam floor, <76) kX tilt spacer, (77)) 2 tilt bracket 2. (7B)
is tilt plate 2, (79) is tilt plate 3
, (80) &2 slide plates.

(81) k"! slide guide, (82) kl keyboard position detection bracket), (83) keyboard detection rotating worm foil, (84) Mituta bracket as long as above keyboard, (85) !2 keyboard limiter, (86) Hakiboard lower limit Mituta bracket, (
87) k”X keyboard lower limiter, (8B)
&2 limiter dock, (89) is CRT desk position detection bracket), (90) k'[R'r upper limit Mituta bracket, (91) is CRT lower limit Mituta bracket, (92)
) is CRT upper limiter, (93) is CRT limiter dock, (94) is front and rear position detection bracket, (9
5) f'! Potentiometer bracket.

(96) is a potentiometer, (97) is a position detection spur gear, (98) is a rack, (99) &'!
Front and rear limiter brackets, (102) are tilt limiter brackets.

(104)&″ss level foot (105)&2 cover 1, (106) is cover frame, (107
) is the electrical component mounting frame, (108) is the plate for electrical component mounting, (109) is the front cover frame, (110) is the front cover, (111) is the back cover, (112) is both the armrests, (113) is the
) is the bellows, (114) is the main body leg cover, (
1t5) is the back cover of the foot, (116) is the force bar for both sole arms, (117) is the back cover of both sole arms.
(118) is the back cover of both armrests, (119)
(120) is the keyboard plate, (121) is the caster, (122) is the mechanical part support, (124) is the keyboard drive mechanism, (125)
) is the mechanism frame, (12S) is the keyboard drive im
.

(127) is ball nut 1, (128) is keyboard bevel gear i, (i29)! 2 Keyboard bevel gear 2° ([0) k''!!Keyboard bevel gear 3151) is keyboard bevel gear 4. (132
)&'! 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) k”X CRT front and back sliding mechanism, (1
! 19) is the CR7 front and rear motor, (140) is the front and rear bevel gear 1. (141) is the front and rear bevel gear 2, (
142) is Paul Nut 3. (143) is a CRT tilt drive mechanism, (144) is a tilt motor bracket,
(145) is the tilt motor, (146) is the tilt motor coupling, (147) &! Keyboard bevel gear 5. (148) is a CRT vertical drive mechanism, (1
49) is a helical gear 2. (150) is the No. 1 helical gear 3.
(151) is helical gear 4. (152) is the 71 ring gear 5.

The configuration of the main points of this invention will be described below. Main body frame (1) Level hoods (104) on both sides
and a foot portion (122) having casters (121), a mechanism receiving portion (123) that supports a keyboard sliding mechanism (L126) at the rear of this foot portion, a keyboard drive mechanism (124) that connects both foot portions (122), and a keyboard drive mechanism (124). It consists of a mechanism frame (125) that supports the.

The keyboard sliding ie A structure (126) is located between the mechanism receiving part (123) on both sides of the K lower plate (2) and the upper plate (3) which is firmly fixed by the fixed shaft (41) above this lower plate. the sliding shaft holder (5) in the vertical direction.
), the sliding shaft (6) K is fitted with the sliding shaft (6), which is fitted with the keyboard upper and lower play) (143), and the sliding bearing (7) is firmly attached to the keyboard. The keyboard drive mechanism (124) has a structure in which the keyboard upper and lower plates 0 move smoothly KM in the vertical direction.

Mechanism receiving parts (123) on both sides above K Ball screw 1 bearing (9) parallel to the above keyboard sliding mechanism (126)
The keyboard ball screw Q1 is rotatably supported by the keyboard ball screw Q1. This ball screw OIK is screwed in and is fixed to the keyboard upper and lower plate shafts (127), and the mechanism frame (125) is connected to the keyboard motor bracket 0I.
) Keyboard motor Q supported by K, keyboard bevel gear 1 (128) fixed to the output shaft end of keyboard motor αB via keyboard motor coupling (Iη), keyboard bevel gear 1 (128) fixed to the output shaft end of this keyboard motor αB, keyboard bevel gear 2 (129), keyboard bevel gear 3 (130) at each shaft end, keyboard bevel gear (137), keyboard bevel gear 5 at the other end.
(147) is fixed and is rotatably supported by the mechanism frame with a horizontal axis bracket 0:1 horizontal axis 1a4° horizontal axis 2a! 9. Keyboard bevel gear 4 (151) and bevel gear 5 (14) are fixed to the lower end of the keyboard pole screw.
7) Consisting of K meshing bevel gear + Ill, the rotational movement of the keyboard motor is transferred to the keyboard ball screw α.
IK is transmitted and the keyboard vertical play 1-Q9i is made into a linear movement in the vertical direction.

The keyboard plate (120) is mounted horizontally on both armrests (112) K, which are fixed to the upper and lower keyboard plates 09.

The keyboard upper and lower plates a9 fix the CRT vertical sliding mechanism (1!3) and the CRT vertical drive mechanism a (148) via a spacer block.

The CRT vertical sliding mechanism (133) connects the keyboard vertical plate (I) via a symmetrical VC spacer block (E).
KCRT sliding between the IK-fixed CRT bracket (lυ) and the CRT bracket 2) and the L-shaped CRT bracket 604 attached to the KFG assembly and the 0RT bracket 3 (to) attached to the upper end of the FC7. CR firmly fixed between shaft lower holder Q4 and CRT sliding upper holder (5)
T sliding shaft (c), CRT frame bracket (135)
K is fixed to smooth the upward and downward rectilinear movement of the CRT table frame (43) fixed to the upper part of the CRT frame bracket (135).

CRT vertical drive mechanism is CRT bra bracket 6G4
'Bra bracket 3c for IJRT! A CRT upper and lower ball screw (c) rotatably supported by a ball screw bearing (7) etc. between 3 is screwed into this CRT upper and lower ball screw holder,
CRT frame bracket (135) K Fixed pole nut 2 (134), CRT upper and lower ball screws (
C) Helical gear 1433 fixed to the lower end. CRT desk motor I connected to ICI'υ
3n, output terminal VCC of this OR' T single use motor 6n
The helical gear 2 (149) is fixed via the RT vehicle motor coupling 01, and this helical gear 2 (1
Fix the helical gear 3 (150) that meshes with 49),
At the other end are helical gears 4 (151) that mesh with the helical gears 103, respectively.

The helical gear 5 (152) is fixed, and the CRT horizontal shaft (to) is connected in a straight line and rotationally supported by the CRT horizontal shaft coupling (to) and the CRT horizontal shaft bearing (c).

The rotational movement of the CRT table motor (b) is controlled by the left and right CRT upper and lower ball screws C1'lK.
The ball nut 2 (134) is then moved in a straight line in the vertical direction.

CRT desk frame OII complete, approximate center position KOR'l'
It is equipped with a longitudinal drive mechanism (137) and a symmetrical KCRT longitudinal sliding mechanism (138). The CRT front and rear drive mechanism (137) has a front and rear ball screw bracket 1@1 front and rear pole screw bracket) 2 (51) arranged at the front and rear of the CRT desk frame 03, and is rotatable via a front and rear ball screw bearing (52). Front and rear ball screws (53)
, CRT desk frame θ] Front and rear motor brackets (
The front and rear bevel gear 1 (140) is fixed to the output shaft of the CRT front and rear motor (139) via the front and rear motor coupling (57). Front and rear bevel gears 2 (
141). CRT front and back sliding mechanism (13
7) is the front and rear sliding shaft bracket 1 (44) and front and rear sliding shaft bracket 2 (4!9) on the front and back of the CRT desk frame (4!
Front and rear sliding bearings 1 front and rear brackets (41K) fixed with
It is constructed of two fixed front and rear sliding shafts (front and rear sliding bearings fitted to A), allowing for smooth movement in the front and rear directions.

Further [CRT front and rear drive mechanism (137) K is front and rear ball screw (55) K screwed in pole nut) 3 (1
42) is included. This ball oak) 3 (142)
front and rear pole screw brackets) 3 (54) to which are fixed,
Front and rear plates (55) to which two left and right front and rear sliding shaft brackets 3 (C) are fixed; K is a CRT tilt drive mechanism (
143) is provided.

The CRT tilt drive mechanism (143) has two front and rear plates (5
5) K tilt motor bracket (144) Telt motor (145) fixed by FC, chilled motor coupling (
Tilt bevel gear 1 (64) fixed via
) Tilt bevel gear 2 (56) engaged with this tilt bevel gear 1 (64) K, a stroke screw (67) that is screwed into the nut of the center shaft of this tilt bevel gear 2 and moves up and down within the gear guide, this stroke screw (67) ) Tilt plate (73) fixed to the upper end of the
It consists of cam floors (75) provided at both ends.

Cam floor (75) is tilt play) 2 (78).

Tilt plate 3L79)K
19) is rotatably attached to the square hole provided in the center back side. Also, tilt bevel gear 2 (
66) is rotatably provided on the tilt bracket IK by means of a thrust spacer (69)K.

The CRT plate (119) is a part of the cam floor (75) of the above-mentioned CRT tilt drive unit 4# (143).

CRT bracket 8 (6
0) The rotating shaft (62) and the rotating shaft bearing (63) are connected to the upper part of the CRT support plate (61) which is fixed to the K.

A rotating shaft (62) is supported to serve as a tilting fulcrum. CRT bracket) 8 (60) is a CRT plate (59), CRT bracket nut (58) K-connected to the CRT front and rear sliders! 1t (138) K-connected front and rear sliding platen) (49) is fixed to the upper end.

In addition, keyboard motor (II), CRT table motor (
371, the CRT front and rear motor (139) and the tilt motor (145) both have a control circuit that can switch between forward and reverse rotation, and by these forward and reverse rotations, the keyboard drive mechanism (124) and the CRT The vertical drive mechanism (148) changes the direction of linear motion upward and downward, and the CRT longitudinal drive mechanism (137) moves forward and backward.
The CRT tilt drive mechanism (143) is
119) is configured to slope downward from the front and downward from the horizontal.

In addition, the keyboard drive mechanism (124,), CRT vertical drive mechanism (148), CRT front and back drive mechanism (1!+
7), CRT tilt drive mechanism (143) K has 0 keyboard motors at the upper and lower limits of the movable range, respectively.

CRT desk motor C371, CRT front d motor p (
139).

A safety mechanism is installed to cut off the control circuit of the tilt motor (145).

In addition, the vertical position of the keyboard plate (120), CRT plate (119), the longitudinal position of the CRT plate (119), and the CRT plate (
119) and a detection mechanism for detecting the respective states. Descriptions of the configurations of the safety mechanism and position detection mechanism will be omitted.

The schematic configuration of the control circuit for each motor is as shown in Figure 1. The control circuits for each motor, 0η, (139), and (145) have the same circuit configuration, and each circuit corresponds to each motor. is configured. For example, (153) is the motor, (154) is the capacitor, and (155) is the power supply.

(156) is a forward/reverse switch, (157) is an upper limiter, (158) is a lower limiter, (15)
9) is a forward rotating contact.

(160) is a counter-rotating contact.

In the keyboard work desk configured as described above, when the forward/reverse switch (156) of the control circuit of the keyboard motor Ql is turned to the forward rotation contact (159) side KOH, the keyboard motor brocade rotates in the forward rotation direction. do. This rotation is caused by the mechanism receivers (12) on both sides of the main body frame (1).
3) supported by the keyboard ball screw HK, the keyboard bevel gear 1 (128), and the horizontal shaft 1a4. As the horizontal axis 20 and the keyboard ball screws (Illk2) on both sides are rotated by transmission through bevel gears (111, etc.), the ball nuts t' 1 (127) fixed to the keyboard upper and lower plates 09 begin to move upward. Keyboard top and bottom play) (19 is main body frame +
Keyboard sliding mechanism on both sides of 11 (1215)
, that is, the sliding shaft (6) and the keyboard upper and lower plates Q!
Since it is supported by the sliding bearing (7) attached to 1Vc, the keyboard moves up and down (19 moves upward very smoothly. Therefore, it is fixed to the keyboard top and bottom plate A9 via both arms < 112). The keyboard plate (120) Fj starts to move upward smoothly. If you continue to KOH the forward/reverse selector switch (156) to the forward rotation contact (159) side, the keyboard will play)
(120) continues to rise, and when the keyboard operator turns off the forward/reverse selector switch (155) at a desired height, it stops at that height. When the forward/reverse selector switch (156) is turned ON and ON to the forward rotation contact (159) side, the keyboard play (120) reaches the upper limit height and the upper limiter (15
7) is OFF'L, and the power to the keyboard motor is turned off, so the keyboard player (120) stops at the upper limit height. Reverse forward/reverse switch (155)
When the reverse rotation contact (160) side is KO'kJ, the keyboard plate (12 [)) 12 moves downward.

Similarly to moving the keyboard plate (120) upward, when the desired height is reached, press the forward/reverse switch (1
56), the keyboard plate (120)
stops 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 five desired positions between the upper and lower height limits. Since the keyboard upper and lower plates (L9KCRT vertical sliding mechanism (133) and CRT vertical drive mechanism (148) are fixed, these also move simultaneously with the vertical movement of the keyboard plate (120)).

Therefore, the CRT vertical sliding mechanism (133), the CRT vertical driving mechanism (14B), the fixed CRT frame bracket (135) Tlr, and the CRT plate (119) supported on the fixed CRT table frame 03 are connected to the keyboard. As the plate (120) moves up and down, it moves down -E. Then, set the forward/reverse selector switch [156] of the control circuit of the CRT desk motor 07) to the forward rotation contact (159) side V.
When cON, the CRT desk motor 0 cover rotates in the forward rotation direction. This rotation is carried out by the No.suba gear 2 (149), No.
Helical gear 3 (150), helical gear 4 (151),
Haspa gear 5 (152) and CRT horizontal axis 1 (to), C!
Transmission is transmitted by the RT horizontal shaft 2 (to) to the CRT upper and lower ball screw brackets on both sides supported between the CRT bracket 6 and the CRT bracket 3), and the CRT upper and lower ball screw brackets are connected to the pole nut 2 ( 134)
to move straight upward. CRT bra bracket 3@
The sliding bearing (G) and ball nut) 2 (
134) fixed to the CRT frame bracket (i35
) move upward smoothly. Therefore, C.R.T.
Frame bracket (j35) Fixed CRT table frame (4) CRT plate supported on top (119)
is smoothly guided by the CRT vertical sliding mechanism (14B) and moves upward. The keyboard operator (119) can change the height of the CRT play (119) by changing the height of the CRT play (119) by switching the forward/reverse changeover switch (156). (CRT, etc.) can be set at a height that is easy to see. The operation of cutting off the power to the CRT desk motor c1η when the upper and lower limits of CRT play (119) is the same as the operation of keyboard play) (120).

Next, when the forward/reverse selector switch (15iS) of the control circuit of the KCRT front edge motor (139) is turned on at the forward rotation contact (159) side, the CRT front and rear motor (139) rotates in the forward rotation direction. This rotation is caused by the front and rear bevel gears 1 (140),
Front and rear bevel gear 2 (141) K Therefore, by rotation of the front and rear ball screw (53) rotatably supported before and after the CRT desk frame θ30, the 1 front and rear plate (55) K
The fixed ball neck) 3 (142) moves straight forward. Front and rear plates (55) ) 20 CRT front and rear sliders fixed to the left and right sides of the RT desk frame θ3 @ (13B) K Therefore, the 1 front and rear plates (55) are guided and move smoothly forward. Therefore, play around 1-
(55) K Left and right front and rear sliding shaft brackets 3 (to).

The CRT plate (119) supported by the CRT bracket (5B), the CRT bracket 8 (60), and the CRT tilt drive mechanism (143) moves forward smoothly while being guided by the CRT front and rear sliding mechanism (138)K.

Keyboard plate (120) and CRT plate (11)
Similar to the vertical movement in 9), the keyboard operator should
Visual acuity [6 points] Forward/reverse switch (15
6), the front/rear direction KCRTOR-to (1
19) can be set. In front of CRT plate (119)
This is the same as the operation of cutting off the power to the CRT front and rear motors (139) and the keyboard plate (120) at the latter limit.

Further, the forward/reverse selector switch (156) of the control circuit of the tilt motor (145) is rotated in the forward rotation contact (159) side of the KOH sult tilt motor (145) +2 forward rotation direction. The rotation of the tilt motor (145) is transmitted to the tilt bevel gear 2 (66) by the tilt bevel gear 1 (<54)K, and the stroke screw (67) screwed into the nut of the tilt bevel gear 2 (66) is rotated upward. Move to.

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

The CRT plate (119) has two symmetrical plates in front of it.
Since the CRT bracket (60) K is rotatably supported by the rotating shaft (62) at the upper part of the fixed CRT fulcrum plate (61), the CRT plate (11
9) slopes forward and downward. On the other hand, use the forward/reverse switch (15
When 6) is turned KOH on the reverse rotation contact (160) side, the CRT plate (119) is tilted to punch. Therefore, the keyboard operator must place the CR on the CRT plate (119).
The T screen can be set to any desired angle by operating the forward/reverse switch (156).

Note that the operation of cutting off the power 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. Keyboard play at the desired height that suits your posture (120) i.

If you operate the forward/reverse selector switch (156) for keyboard play (120) and move it up or down, this keyboard play (120) and KCRTOR (120) can be set simultaneously.
119) is also automatically set. Then, the height of the CRT plate (119) is changed by operating the forward/reverse changeover switch (156) for the CRT plate (119).

Set the CRT screen to a position where it is easy to see. Therefore, the height of the KCRTOR plate (119) can be moved at the same time as the keyboard play (120), and the height of the CRT plate (119) can be moved simultaneously.
119) can also be moved independently, so even if the height is the same, the position of the CRT screen depending on the difference in sitting height, that is, C
RT Play) By slightly moving the height of (119), you can set the CRT screen to your desired position.

Regardless of whether you are short or tall, the keyboard operator can play the keyboard. can be set easily and in a short time. In the above embodiment, keyboard play) (120).

The drive mechanism of (119) (CRT play) is composed of parts such as a forward/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, etc. 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 it drives the keyboard plate vertically and at the same time moves the CRT plate disposed behind the keyboard plate, and the CRT plate can also move vertically independently. Depending on the structure, it can be used by both tall and short people.
By first adjusting the height of the keyboard plate and then slightly adjusting the height of the CRT plate, you can work on the keyboard in your preferred posture without causing fatigue, and you can reduce the distance the CRT plate must move. This has the effect of providing a low-cost keyboard work desk with a simple and simple structure.

[Brief explanation of drawings]

FIG. 1 is a front view showing an embodiment of the invention, FIG. 2 is a top view, FIG. 3 is a side view, and FIG. 4 is a perspective view. FIG. 5 is a block diagram of a control circuit, and FIG. 6 is a perspective view of a conventional keyboard work desk. In the figure, 1llt'! Main body frame, (6) is the sliding shaft. (7) is a sliding bearing, the main part is a keyboard pole screw, (lI
t2 keyboard motor, Ql is the upper and lower keyboard plate, (c) is the CRT sliding bearing, 翺 is the CRT upper and lower ball screw, (b) G20 R'r desk motor, 0η is the front and rear sliding shaft. (To) is the front and rear sliding bearing, (53) is the front and rear ball screw. (112) & 2 sode arms, (119) is CRT
plate. (120) is a keyboard plate, (124) is a keyboard drive mechanism, and (126) is a keyboard vertical sliding mechanism. (127) is Paul Nut 1, (155) is CRT
Vertical sliding mechanism, (134) is pole nut 2. (13
9) is the 011 front and rear motor, (142) is the pole nut 3. (145) is a CRT tilt drive mechanism, (145
) is a tilt motor. (148) is a CRT vertical drive mechanism, ((S7) is a stroke screw, and (153) is a forward/reverse changeover switch. In each figure, the same reference numerals indicate the same or equivalent parts.

Claims (1)

[Claims] A main body frame, a keyboard sliding mechanism and a keyboard driving mechanism provided on the main body frame, a keyboard upper and lower plate that is attached to the keyboard sliding mechanism and the keyboard driving mechanism and moves linearly in the vertical direction, and a keyboard that is fixed to the keyboard upper and lower plates. a CRT sliding mechanism and a CRT vertical drive mechanism fixed to the keyboard top and bottom plates; a CRT desk frame that is attached to the CRT sliding mechanism and the CRT vertical drive mechanism and moves linearly in the vertical direction;
The CRT table frame is equipped with a CRT plate positioned behind the keyboard plate, and when the keyboard plate is driven in the vertical direction, the CRT plate also moves, and the CRT plate is independent of the keyboard plate. A desk for keyboard work that is characterized by the ability to move vertically.