JPH02198508A - Display-containing type desk - Google Patents

Abstract

PURPOSE:To make it possible to widely use the surface of a desk even in using a display and simply put the display in and out, by a method a lifting stand is provided in a holding part on the rear side under a top board, and a cover plate is provided, which becomes on the same level with the surface of the top board when closed and is opened or closed by being lifted or lowered together with the lifting stand. CONSTITUTION:When a display 11 is held under a top board on the rear side of a desk, a holding part 12 is closed by a cover plate 14 and its upper surface 14a becomes on the same level with the surface 1 of the desk. When a lifting stand 16 is raised and the display 11 is put out, a supporting part 18 for the display is fitted to an opening. A lifting stand-detecting sensor 51a is also provided in order to lift or lower the lifting stand 16 safely and surely, and controls the releasing operation of securing mechanism 52a, 52b. In this way, putting the display in and out can be operated for a short time and the surface of the top board of the desk can be widely used when the display is put out.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a desk in which a display of an OA device is mounted on a top plate so as to be retractable.

(Prior Art) In order to smoothly perform both customary office work that uses paper as an information medium and office work that uses OA equipment, and to save installation space for OA equipment, the display of OA equipment is placed on the desk top. Various types of desks have been proposed that are attached to a board so that they can appear and disappear at will.

For example, Japanese Unexamined Patent Publication No. 118416/1983 discloses a structure in which a display is installed in the center of a desk so that it can be raised and lowered freely, and a structure in which the display is balanced with a fixed pulley and weight so that it can be easily raised and lowered is disclosed. Disclosed. In addition, Japanese Patent Application Laid-open No. 63-43607 discloses the following: 1. A display is mounted on an elevating platform provided at the back of the desk so that it can be moved in and out by driving an electric motor, and the back top plate with its rear edge pivoted can be opened rearward. A desk has been disclosed in which the front top plate is slid under the platform after the platform is moved up, and the keyboard is pulled out from underneath.
Publication No. 3-116802 discloses that a display is provided on the rear edge of a recess provided in the top plate of a desk so as to be rotatable around a horizontal axis in the left-right direction, and when the display is pushed into the recess, the back of the display is rotated. A desk having a structure that serves as a top plate surface of the desk is disclosed.

(Problem to be solved by the invention) In actual office work, even in office work using OA equipment, it is essential to take notes and confirm input data by referring to documents. Writing utensils and paper clips are constantly being put in and taken out of the desk. However, with the conventional structure as described above, when the display appears, gaps and depressions are created between the keyboard and the display and between the display and the top of the desk. There is a problem in which staplers and the like fall and impede smooth office work, and in particular, when the display is stored without noticing that stationery has fallen into the display storage section, there is a problem in which the display surface and lifting device are damaged. Ta.

Furthermore, for example, in the first conventional structure described above, the lifting and lowering of the display is balanced using weights, which makes the desk very heavy and sensitive to vibrations. There is a problem that the elevating structure becomes very complicated.

Therefore, this invention allows a wide desk surface to be used even when using a display, and eliminates the formation of gaps or recesses on the desk surface.
The object of the present invention is to provide a desk with a built-in display that allows the display to be put in and taken out with a simple operation, has a simple structure, and can be provided at low cost.

(Means for Solving the Problems) The desk of this invention has a display 11 on the back side of the desk.
It is designed to be able to be raised and lowered. The display 11 is mounted on a lifting platform 16.16a attached to a storage section 12.12a provided at the back under the desk top plate. The storage portion 12.12a may be formed in the shape of a vertical hole inside the back plate 1c of the desk, or may be formed along the back of the back plate 1c of the desk as shown in FIG. The lifting platform 16.16a is
It is attached so that it can be raised and lowered vertically or rotated around the horizontal axis in the front and back direction of the desk. At the upper end of the storage section 12.12a,
Top surface 14a that becomes the same surface as the top plate surface 1a of the desk when closed
A lid plate 14.14b is provided having a. This cover plate is
Although it is possible to have a structure in which the lifting table 16 and the lifting table 16a are raised and lowered together to open and close, it is more preferable to use a separate member from the lifting table 16 when the lifting table 16 is vertically raised and lowered. By making the lifting platform 16 and the lid body 14 separate members, the inertia and operating space of the lifting and opening/closing members can be reduced, and the good adhesion between the lid plate 14 and the desk top plate 1 when the lid plate is closed can be improved. It can be easily realized.

Lifting and lowering of the lifting platform 16.16a is easily carried out by a biasing spring 24 that urges the lifting platform 16.16a upward and by a push-down action by the operator. In this case, storage section 1
2.12a is provided with an automatic locking mechanism 25 for locking the lifting platform 16.16a in its lowered position, and a release mechanism 30 for releasing the locking mechanism. When the lid body 14 is provided separately from the lifting platform 16, the lid body 14 is also provided with a biasing spring that biases it in the opening direction and an automatic locking mechanism 29 that locks it in the closed state, and the release mechanism 30 It is convenient that the lifting platform locking mechanism 25 and the lid locking mechanism 29 are opened at the same time. The automatic locking mechanism referred to here refers to the lifting platform 16.1.
The locking protrusion is automatically pushed in by the lowering or closing operation of 6a or the cover plate 14 or 14b, and then protrudes again by a spring or the like at the lowering end or closing end to lock the elevator platform or the cover plate. Yes, various structures are known.

As a structure that allows the lifting platform 16.16a to be raised and lowered more safely and reliably, a structure in which the lifting table detection sensors 51a, 51b and the lifting table locking mechanisms 52a, 52b are provided at the rising and lowering positions of the lifting table can be adopted, The locking mechanism 52a, 5
When the operator gives a release signal to 2b, it is possible to perform control such as executing a release operation of the locking mechanisms 52a and 52b by referring to the output signal of the sensor 51a151b and the operating state of the OA filling device.

When the lifting platform 16.16a is raised, the storage section 12.12
Display support part 1 that fits into the opening 13 of a without a gap
It is equipped with 8. Display 11 is preferably mounted on display support 18 via tilt mechanism 22 .

If the desk also has a built-in computer and storage device, as shown in Figure 3, the main body 5 equipped with an external storage device such as a flexible disk device is stored in the sleeve part of the desk, and the drawers above and below the main body 5 are stored. Each section has a tray 6 for storing small items.
It is convenient to have a storage shelf 7 and a file storage shelf 7.

(Function) When the display is not in use, the display 11
is stored under the top plate on the back side of the desk. At this time, the display storage section 12.12a is closed with a cover plate 14.14b, and the upper surface 14a of the cover plate is flush with the desk top surface 1a.

When the cover plate 14.14b is opened and the elevator platform 16.16a is raised, the display 11 is pulled out onto the desk top plate. Storage part 12.1 after lid plate 14.14b is opened
The opening 13 of 2a is closed by fitting the display support part 18 of the elevated platform. At this time, the upper surface 18a of the display support member 8 is at a position that is the same as or higher than the top surface of the desk. Opening 1 of storage part 12.12a
Although the display support stand fitted to the display support stand 3 cannot be tilted or rotated by itself, if the display 11 is mounted on it via the tilt mechanism 22, the display 11 can be adjusted in the direction of the illumination light or the physique of the operator. You can freely point it in any direction according to your preference.

The keyboard 4 is operated in a pulled out state by removing the top plate, pulling out the keyboard, or reversing the keyboard.

The display 1 is equipped with a biasing spring 24 and an automatic locking mechanism 25 for raising the lifting platform 16.16a.
1 by hand, the display 11 is stored in the storage part 12.12a and is automatically locked, and by releasing the automatic locking mechanism 25 with the release device 25, the lifting platform 16.16a is released from the spring 24. It rises due to the biasing force. The cover plate 14 is made separate from the lifting table, and is provided with an urging spring that urges it in the opening direction and its automatic locking mechanism 29, and the locking mechanism is connected to the locking mechanism 25 of the lifting table 16 by a release device 30. In the case where the display 11 is released at the same time, the display 1 is released by pressing down the display 11 by hand and then closing the cover plate 14.
1 is retracted and the automatic locking mechanism 25 is activated with the release ff30.
．． 29 at the same time, the cover plate 14 having a small mass is first opened, and then the lifting platform 16 is raised.

Lifting table detection sensors 51a, 51b and lifting table locking mechanisms 528.52b are installed at the rising and lowering positions of the lifting table 16.16a.
For example, when the operator gives a release signal while the display is in the retracted state, the control power of the device is turned on and the lower end locking mechanism 52b is released, the lifting table 16 rises and the upper end sensor 51a is activated. is detected, the upper end locking mechanism 52a is operated to lock the lifting platform 16 at the raised position, and then the display 11 is made ready to be powered on.Also, when the operator gives a release signal while the display is pulled out, The lifting platform 16 is raised and lowered by controlling the display 11 to be powered off, releasing the upper end locking mechanism 52a, and operating the lower end locking mechanism 52b when the lower end detection sensor 51b detects the lowered lifting table 16. Operation can be controlled more safely and reliably.

In the case where the platform 16 is guided by the rail 15 on one side of the rail 15, the shaking of the platform 16 during elevation can be effectively prevented by providing anti-shake wheels 38 above the opposite side.

(Embodiment) In Figures 1 to 4 showing an embodiment of the present invention, 1 is the top plate of the desk, 2 is the oil part of the desk, 3 is a drawer plate provided under the top plate on the front side of the desk, 4 is a keyboard placed on a drawer board, 5 is a computer body stored in the center of the oil section of the desk, 6 is a pull-out tray installed above the oil section, and 7 is a drawer-type file installed at the bottom of the sleeve. It is a storage shelf.

The drawer plate 3 is guided by a rail (not shown) and is slidably attached to the desk in the front and rear directions, and when pulled out from the front edge 1b of the top plate, the keyboard 4 mounted thereon can be operated. The keyboard 4 is stored by pushing it under the top plate.

11 is a display, 12 is a storage hole for the display 11 provided at the back of the desk, 13 is an opening of the storage hole, 14 is a cover plate for closing the opening 13, and 15 is a vertical hole provided at the back of the storage hole 12. A rail 16 is an elevating platform that is supported by the rail 15 with a slide guide 17 so as to be able to rise and fall freely. It is installed on 18.

23 is a winding roller rotatably attached to the bracket 19 of the lifting platform; 24 is a coiled spring whose base end is wound around the winding roller 23 by its own elasticity and whose upper end is engaged with a stationary member;
Both constitute a constant force spring device 32. 25 is a bottom latch attached to an immovable member so that it can move forward and backward; 26 is a locking piece formed on the bracket 19 of the lifting platform; 27 is a release button; 28 is a latch rod; and 29 is an upper latch for locking the cover plate 14. It is. The upper latch 29 and the bottom latch 25 are connected by a latch rod 28 and released simultaneously by a release button 27, and the entire structure constitutes a release mechanism 30.

The lid plate 14 is pivotally connected to the top plate l by a hinge 31, is biased in the opening direction by a coiled spring (not shown) around the hinge 31, and is held in the closed state by the upper latch 29. When the release button 27 is pressed down, the upper latch 29 is released and the cover plate 14 is opened. When the lid plate 14 is closed, the opening 13 of the display storage hole is closed without any gap, and its upper surface 14a is flush with the top plate surface 1a.

The constant force spring device 32 biases the lifting platform 16 upward by the force of the winding spring 24 trying to wrap around the take-up roller 23, and when the lifting platform 16 is located at the lower end, the locking piece 26
engages with the bottom latch 25 to lock the lifting platform 16. When the release button 27 is pressed, the bottom latch 2
5 is retracted, the elevating table 16 is unlocked, and the display 11 is pulled out onto the top plate 1 by the biasing force of the constant force spring device 32. When the display is pulled out,
The display support part 18 of the elevator platform fits into the opening l3 without a gap, and its upper surface 18a is flush with the top plate surface la.

A latch 29 that locks the lid plate 14 and a latch 25 that locks the elevator platform 16 are simultaneously opened by a single release button 27. When the latches 29 and 25 are opened at the same time, the M plate 14 having a small mass opens quickly, and the display 11 slowly rises from the opening 13 after opening. The relationship between the operations of the cover plate 14 and the lifting platform 16 can be easily set by selecting the strength of the spring that biases both.

It is preferred that the display 11 be raised slowly and smoothly, and this requirement can be met by using a constant force spring device 32 of the construction shown in the illustrated embodiment.

The tilt mechanism 22 is composed of an arcuate guide 35 on the upper surface of the display support part 18 and a rocking table 36 guided by the guide, and can freely set the elevation angle of the drawn display 11.

The display 11 in the pulled out state is pushed into the storage hole 12 by pushing it down by hand, and the lifting platform 16 is locked with the bottom latch 25 at the lower end and stored. After that, by pressing down IHff14 by hand in the same way, opening 1 is opened.
3 is closed, and the cover plate 14 is locked with the amber latch 29. The bottom latch 25 and the upper latch 29 have a structure in which the locking protrusion is urged in the protruding direction by a spring, and the upper surface of the locking protrusion is slanted, so that the lifting platform 16 and the closed lid reach the lower end. The plate 14 is automatically locked. Various types of automatic locking mechanisms are known, so any type of automatic locking mechanism may be used.Alternatively, a solenoid or the like may be used to release the launch 25.29 using an electric signal. You can also do it.

In the embodiment shown in FIGS. 1 to 4, the rail 15 is arranged at the back of the storage hole 12, and the lifting platform 16 tends to move downward due to the weight of the display 11. Therefore, wheels 38 that move on auxiliary rails 37 provided vertically in front of the storage hole 12 are provided at the front upper part of the lifting platform 16, and the wheels support the moment in the forward tilting direction of the lifting platform 16. It has a structure that prevents it from wobbling in the forward and downward direction when going up and down.

5 and 6 are diagrams showing other examples of storage structures for the keyboard 4. FIG. The figure shows a removable top plate structure in which a part 43 of the top plate located above the keyboard 4 is removed and dropped into the back side.

FIG. 7 shows another example of an elevating device for the elevating table 16, which has a structure in which a ball screw 45 driven by an electric motor 44 is screwed into a pole nut 46 attached to the elevating table 16. In this structure, the power switch 30 of the electric motor 44
a is the release mechanism of the lifting metalwork 6, and the power switch 3
By turning 0a on in the forward or reverse direction, the display device is pulled out and stored.

In addition, in the one shown in FIG. 7, a tilt mechanism 22 is provided on a turntable 34 that is rotatably fitted to the display support part 18 of the elevator platform, and the elevation angle tilt mechanism 22 of the display 11 allows the display 11 to be tilted within the horizontal plane. The direction can be freely set using the turntable 34.

FIG. 8 is a perspective view showing an example in which the lifting table is of a rotary lifting type. Constant force spring device 32
It is biased in the upward direction, that is, counterclockwise in the figure. Reference numeral 21 in the figure is an arc-shaped guide plate fixed to the lifting table 16a to receive the coiled spring 24. The tip of the coiled spring 24 is fixed to the tip of the guide plate 21, and the winding roller 23 is attached to the desk side. It is pivoted to a stationary member. The cover plate 14b is the lifting platform 1
6a, and the whole is formed into an L shape. The display 11 is mounted on a lifting platform 16a via a tilt mechanism 22 and a turntable 34, similar to the one shown in FIG.

The display housing part formed on the desk can also be formed along the outside of the back plate 1c of the desk, as shown in FIG. In the one shown in FIG. 9, a vertical recess is formed in the back plate 1c to serve as a storage section 12a, and a lifting platform 16 is provided in the storage recess.
are provided on the left and right wall surfaces of the storage recess 12a, and the cover plate 14 is opened laterally. If the display 11 is to be made even thinner, a display housing portion can be formed by leaving the back plate 1c as a flat plate and making the rear edge of the desk top plate 1 protrude a little further rearward. In addition, if the display 11 is thin, the height of the cover plate 14 when opened can be set to a height that hides the support part of the display.
The structure may be such that it opens toward the front, which can more reliably prevent stationery and the like from falling into the storage section without impairing the visibility of the display.

10 to 14 are diagrams showing an embodiment in which lifting platform detection sensors 51a, 51b and lifting platform locking mechanisms 52a, 52b are provided at the upper and lower portions of the display storage hole 12. The lifting platform locking mechanism 52 has a structure in which the bottom latch 25 of the first embodiment can be released by a solenoid, and as shown in FIG. A spring 55 applies a biasing force in the engagement direction to a lock piece 54 having a toe end 53, and a solenoid 56
5, the lock piece 54 is retractable, and the locking mechanism 29 of the cover plate 14 has a similar structure.

The illustrated elevating table detection sensor 51 is a transmission type photoelectric sensor as shown in FIG. 12, and has a structure in which the elevating table 16 blocks the optical path.

Depending on the mode of control, the locking mechanism 52 may have a structure in which it is released by a manual release mechanism as in the first embodiment, or a structure in which the locking tip 53 is moved back and forth only by the operation of a solenoid. It is also possible to use a microswitch or other sensor as the sensor 51.

FIG. 13 is an electrical wiring diagram of the device having the structure shown in FIG. 10, and 57 is a control device. This control device allows the display 11 to be powered on only when the upper end sensor 51a detects the elevator platform 16, and also controls the elevator platform locking mechanism 52 in accordance with the output signal of the sensor 51.
Further, after the lower end sensor 51b detects the lifting platform 16 or the lower end locking mechanism 5
The control power supply is automatically cut off after 2b is activated.

Next, the above control operation will be explained in detail with reference to the flowchart of FIG. 14. In the display storage state, the power to the control device 57 and the display 11 are turned off, and in particular, the power to the display 11 cannot be turned on in the storage state.

If the release button 27 is pressed in this state, the control power is not turned on, so the control branches to step 5B, and first the control power is turned on. When the power is turned on, the control bag w57 first locks the lower end locking mechanism 52b and the lid plate locking mechanism 2.
9, and after the lid plate 14 is released, the elevating table 16 is raised by the constant force spring device 32 to the opening 13. Wait until the elevating table 16 reaches the rising end and the upper end sensor 51a detects it. When the signal is output, the upper end locking mechanism 52a is activated to prevent the elevator platform 16 from descending, and in this state, the display 1
1 becomes ready to be powered on.

On the other hand, when the display 11 appears on the desk, the control device 57 is powered on, and if the release button 27 is pressed in this state, the control branches to step 59. Release the upper end locking mechanism 522. This action cuts off the power to the display 11, and the control device waits for the display 11 to be pressed.

When the display 11 is pushed down and reaches the lower end, the lower end sensor 51b detects the elevator platform 16, the lower end locking mechanism 52b is advanced to hold the elevator platform 16, and the power to the control device 57 is cut off. Thereafter, the operator closes the lid plate 14 to complete storage of the display.

(Effects of the Invention) The desk of this invention can be used as a regular office desk by storing the display under the top plate, and can be used as a computer operation desk by pulling it out, and the display can be pulled out and stored in an extremely easy and short time. , and can smoothly handle frequent work conversions. Furthermore, when the display drawer is pulled out, the opening of the storage portion is completely closed and no recess or gap is formed in the desk top plate, so there is no risk of dropping writing instruments or the like and damaging the device. Furthermore, the structure is extremely simple, and the desk surface can be used widely even when the display is pulled out, and it is also possible to attach the display via a tilt mechanism or turntable, so that the direction of the screen can be set freely. A more suitable working environment can be provided.

[Brief explanation of the drawing]

1 to 4 are views showing a first embodiment of the present invention, in which FIG. 1 is a cross-sectional side view showing the display in the pulled out state, FIG. 2 is a cross-sectional side view showing the display in the retracted state, and FIG. 3 is a cross-sectional side view showing the display in the retracted state. FIG. 4 is a perspective view showing the support mechanism of the lifting platform. 5 and 6 are cross-sectional side views of essential parts showing another example of the keyboard mounting structure, FIG. 7 is a cross-sectional side view showing another example of the lifting platform drive device, and FIG. 8 is a cross-sectional side view of the lifting platform. FIG. 9 is a perspective view of main parts showing another structure. FIG. 9 is a perspective view showing another structure of the display storage section. 10 to 14 are diagrams showing a second embodiment of the present invention, in which FIG. 10 is a cross-sectional side view showing the display pulled out state, FIG. 11 is a detailed side view of the locking mechanism, and FIG. 12 is a sensor Detailed side view of, No. 13
The figure is a wiring diagram of the control system, and FIG. 14 is a flowchart showing the control operation. In the figure, Engineering: Desk top 4: Keyboard 11: Display 13: Storage opening 16.16a: Lifting platform 22: Tilt mechanism 25: Bottom latch 29 Near shoulder latch 32: Constant force spring device 3rd: Wheel 52 : Elevating table locking mechanism 57: Control device 3: Drawer plate 5: Computer main body 12.12a: Storage section 14.14b: @ plate 18: Display support section 24: Winding spring 27: Release button 30 Release mechanism 37: Auxiliary rail 51: Lifting platform detection sensor 56: Solenoid

Claims (8)

[Claims] (1) A lid plate (14,
14b) is provided;
A direct-acting type or rotating type lifting platform (16, 16a) is installed in the storage section.
) is attached, the lid plate has an upper surface (14a) that is flush with the top plate surface (1a) of the desk when closed, and the elevating platform closes the opening of the storage section (12, 12a) when raised. (
13) A desk with a built-in display, characterized in that it has a display support part (18) that fits exactly into the desk. (2) The lifting platform is biased upward, and locking means (25) automatically locks the lifting platform in the lowered position.
) and a release device (30) of the locking means. Desk with built-in display according to claim 1. (3) A lifting platform (16, 16a) is provided to be biased upward, a lid plate (14, 14a) separate from the lifting platform is provided to be biased in the opening direction, and the lifting platform is biased in the opening direction. locking means (25) for automatically locking the cover plate in the lowered position and locking means (29) for automatically locking the lid plate in the closed position,
3. A desk with a built-in display according to claim 2, further comprising a release device (30) for simultaneously releasing both locking means (25), (29). (4) The display built-in desk according to claim 1, 2 or 3, wherein the display (11) is mounted on the display support section (18) via a tilt mechanism (22). (5) The storage portion (12) is the back plate (1c) of the desk.
Claims 1 and 2, wherein the vertical hole is provided in the inner part of the
The desk with a built-in display as described in 3 or 4. (6) The storage portion (12a) is connected to the back plate (1c) of the desk.
5. The built-in display desk according to claim 1, wherein the desk is provided along the back surface of the desk. (7) The lifting platform (16, 16a) is
Claims 1 and 2, wherein a lifting platform is moved up and down while being guided by a rail (15) provided on the platform, and a lifting platform is provided with a stopper wheel (38) on a side opposite to the side guided by the guide. , 3, 4, 5 or 6, the built-in display desk. (8) A lid plate (14,
14b) is provided;
A direct-acting type or rotating type lifting platform (16, 16a) is installed in the storage section.
) is installed, and the elevating platform is equipped with a storage section (12, 12a
) that fits exactly into the opening (13) of the display support (
18), and the storage section includes an upper end sensor (51a) for detecting the elevator platform (16, 16a) in the raised position and an upper end locking means (52a) for preventing the elevator platform from descending;
A lower end sensor (51b) that detects the elevator platform (16, 16a) in the lowered position, a lower end locking means (52b) that prevents the elevator platform from rising, a release button (27) provided on the desk, and both of the above. A desk with a built-in display, characterized in that it is provided with a control device (57) that controls the operation of both the locking means (52a, 52b) based on the output information of the sensors (51a, 51b).