JP3628574B2 - desk - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a desk suitable for installation and use in a computer room or the like in an educational institution.
[0002]
[Prior art]
Recently, as a desk of this type, a lower top plate that can support a keyboard and an upper top that can be opened and closed between a closed position that covers the top of the lower top plate and a standing position that allows the user to face the inner surface. A liquid crystal monitor device has been developed that can be mounted on the inner surface of the upper top plate.
[0003]
Thus, in the case of not performing work by a computer or the like, the upper top plate is brought down to the closed position, and the keyboard and the above-described storage space formed between the upper top plate and the lower top plate are placed. A liquid crystal monitor device can be accommodated.
[0004]
[Problems to be solved by the invention]
As described above, in this type of desk, the keyboard and the monitor device are accommodated in the storage space in a posture in which they are close to each other in the vertical direction. Therefore, in order to accommodate a thick monitor device while avoiding interference with the keyboard, it is necessary to increase the upper top plate or lower the lower top plate.
[0005]
However, this type of desk may use the top plate surface of the upper top plate that is tilted to the closed position in the same manner as a normal fixed top plate. Therefore, if the upper top plate is set too high, the top plate surface becomes difficult to use. On the other hand, when the height position of the lower top plate is set low, not only the operability with respect to the keyboard is impaired, but also the problem that the leg space is unduly narrowed occurs.
[0006]
In such a desk, when the upper top plate is used while standing, the upper top plate may fall into the closed position due to unexpected external force, and some measures are desired.
[0007]
[Means for Solving the Problems]
In order to solve the above-described problems, the present invention is configured to restrict the return of the upper top plate to the closed position by the action of the closing control mechanism when the upper top plate is opened and used. When the keyboard on the lower top plate is moved to a retracted position that does not interfere with the monitor device, the restriction state can be released by the action of the restriction release mechanism, and the upper top plate can be returned to the closed position. It is comprised as follows.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
The desk according to the present invention includes a lower top plate that can support the keyboard, and an upper top plate that can be opened and closed between a closed position that covers the lower top plate and a standing position that allows the user to face the inner surface. A desk configured to allow a monitor device to be mounted on the inner surface of the upper top plate, and restricts the upper top plate from returning to the closed position when the upper top plate is opened. When the keyboard placed at the use position of the closing control mechanism and the lower top plate is moved to the retracted position that does not interfere with the monitor device, it is detected that the keyboard has been moved to the retracted position and is controlled by the closing control mechanism. And a restriction release mechanism for releasing the.
[0009]
According to such a configuration, the upper top plate can be returned to the closed position only after the keyboard in the use position is moved to the retracted position. In other words, the upper top plate cannot be returned to the closed position while the keyboard is in the use position on the lower top plate. Therefore, it is possible to use a relatively thick monitor device without enlarging the storage space formed between the upper top plate and the lower top plate. In other words, it is possible to avoid storing the keyboard and the monitor device facing each other, so that the height position of the upper top plate is set to be unreasonably high, and the usability of the top plate surface is deteriorated, or the lower top plate is used. Thus, a thick monitor device can be installed without causing a problem that the operability of the keyboard is deteriorated by setting the height position of the display panel to be unduly low and the space of the lower limbs is narrowed.
[0010]
Of course, the position where the keyboard is retracted is not limited to the lower top plate, but in order to be able to retract the keyboard smoothly without narrowing the leg space, use the back area of the lower top plate. It is desirable to keep the keyboard lower than the end side area so that the keyboard used in the use end side area can be retracted to the back side area when the upper top plate is closed.
[0011]
As a specific mode of the closing control mechanism, the locking claw provided on one of the fixing member and the upper top plate is engaged with the claw receiving element provided on the other, and the operation of opening the upper top plate is used. And what comprised the said locking claw so that it might engage with the said claw receiving element can be mentioned. More specifically, a holder is provided on the desk side plate, which is a fixing member, and the lock claw is elastically retractable in the holder, and a receiving hole is provided on the upper top plate so that the upper top plate stands up. It is preferable that the lock claw be engaged with the receiving hole through a temporary elastic retraction operation when reaching the position.
[0012]
As a specific mode of the restriction release mechanism, there can be mentioned one in which the closed restriction state by the close restriction mechanism is released using gravity acting on the keyboard placed in the retracted position. More specifically, a movable plate is provided corresponding to the retracted position, and the movable plate is configured to drop elastically by gravity acting on a keyboard placed on the movable plate, and the movable plate is lowered. Is used to release the closing restriction state by the closing restriction mechanism.
[0013]
【Example】
Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
As shown in FIGS. 1 to 5, the desk 1 in this embodiment spans a lower connecting member 3 and a back plate 4 between left and right desk side plates 2, and a partition plate 5 in the center. A lower top plate 6 and an upper top plate 7 are provided between the side plate 2 and the partition plate 5, respectively.
[0014]
Each desk side plate 2 is provided horizontally on a side plate main body 22 made of sheet metal having a certain thickness, a base 23 having an adjuster 24 provided at the lower end portion of the side plate main body 22, and an upper end portion of the side plate main body 22. Further, the side plate main body 22 has an inverted L shape in side view with the upper end protruding to the use end side.
The partition plate 5 is made of sheet metal, and has a partition main body 52 that looks like the upper shape of the side plate 2 and extends downward from the rear edge of the partition main body 52 and is fixed on the lower connecting member 3. And the upper edge reinforcing portion 53 provided horizontally on the upper end portion of the partition main body 52.
[0015]
The back plate 4 is made of sheet metal, and includes a back plate main body 42 having a bent portion 45 that bends toward the use end at the upper end, a reinforcing member 43 that reinforces the upper end inner corner of the back plate main body 42, a back plate 4. A crosspiece 44 is provided to reinforce an intermediate portion of the face plate main body 42, and mounting flanges 41 are provided at both left and right ends of the back plate main body 42. And the collar part 41 is attached to the inner surface of the desk side board 2 using a pin or a screw so that attachment or detachment is possible.
[0016]
The lower top plate 6 has the back side region 63 lower than the use end side region 64, and the keyboard KY used in the use end side region 64 when the upper top plate 7 is closed is replaced with the back side region 63. It can be evacuated. Specifically, the lower top plate 6 is made of sheet metal, and includes a front half portion 61 that forms a use end side region 64 and a rear half portion 62 that forms a back side region 63. The front half 61 has a flange 67 at the front edge and a hanging wall 66 at the rear edge, and the side pieces 65 provided at the left and right ends are attached to the desk side plate 2 and the partition plate 5 using screws. is there. The rear half 62 has a standing wall 68 at the front edge and a reinforcing bar 69 in the middle, and its upper surface is constituted by a movable plate 81 described later. And the side piece 65 provided in the both left and right ends is attached to the desk side plate 2 and the partition plate 5 with screws while the upright wall 68 is superposed on the front side of the hanging wall 66 of the front half 61. The movable plate 81 is a flat plate having a lateral width from the vicinity of the desk side plate 2 to the vicinity of the partition plate 5, and the front edge side is supported by the hanging wall 66 of the front half 61 via a hinge 83. . A torsion spring 84 is provided on the reinforcing bar 69, and the movable plate 81 is elastically pressed upward by a pressing member 85 provided at the tip of the torsion spring 84. The force of the torsion spring 84 is set to such a value that when the keyboard KY is placed on the movable plate 81, the movable plate 81 can be lowered by gravity acting on the keyboard KY.
[0017]
The upper top plate 7 is made of a sheet metal material with a flat top plate main body 72 that can be used with the outer surface as a top plate surface, and a front wall portion 73 bent from the front edge portion of the top plate main body 72 to the inner surface side. A structure in which the top plate main body 72 and the front wall portion 73 are provided with a front-end-side reinforcing frame 74 at the inner-surface boundary portion, and a base-end-side reinforcing frame 75 is provided at the inner-surface base end portion of the top plate main body 72. It is. Then, brackets 76 projecting inwardly are provided at both left and right end portions of the base end side reinforcing frame 75, and tip portions of the brackets 76 are respectively provided on the inner side surfaces of the desk side plate 2 and the partition plate 5 via the support shaft 88. A fixed bracket 86 is supported. That is, the upper top plate 7 can be opened / closed around the support shaft 88, and is opened / closed from a closed position P covering the lower top plate 6 to a standing position Q where the user can face the inner surface. It is supposed to work. For example, a liquid crystal type monitor device M can be mounted on the inner surface of the upper top plate. Specifically, slits 78 for attachment are provided in the base end side reinforcing frame 75, and the end portions of the bracket M1 provided on the back surface of the monitor device M are inserted into the slits 78, and the insertion end portions thereof are inserted. The monitor device M can be installed on the inner surface of the upper top plate 7 so as not to drop off by being secured to the proximal end side reinforcing frame 75 using screws. The bracket M1 in this embodiment has a hinge 89 in the middle, and the mounting angle of the monitor device M can be changed around the hinge 89. Further, tip end side brackets 77 projecting inward are provided at the left and right end portions of the tip end side reinforcing frame 74 of the upper top plate 7, and the tip end side bracket 77, the desk side plate 2, and the inner surface of the partition plate 5 are provided. A damper device D is interposed between the fixed bracket 87 provided. The damper device D is for preventing the upper top plate 7 from returning to the closing position P at a stroke by applying braking to the movement of the upper top plate 7.
[0018]
When the upper top plate 7 is opened on the desk 1 having the above-described configuration, the closing control mechanism 9 that restricts the upper top plate 7 from returning to the closed position P, and the use position S of the lower top plate 6. A restriction release mechanism 8 is provided that releases the restriction state by the closing restriction mechanism 9 when the keyboard KY placed on is moved to a retracted position T that does not interfere with the monitor device M.
[0019]
The closing restriction mechanism 9 is provided with a holder H on the desk side plate 2 as a fixing member, and holds the lock claw 91 in an elastically retractable manner on the holder H, and a receiving hole 92 as a claw receiving element on the base end surface 71 of the upper top plate 7. The lock claw 91 is configured to engage with the receiving hole 92 through a temporary elastic retraction operation when the upper top plate 7 reaches the standing position Q. Specifically, for example, as schematically shown in FIGS. 6 and 7, the lock claw 91 is accommodated in the holder H in a state where the protruding and retracting operation is restricted to an integral range by the stopper ST. A spring SP, which is an elastic body, is provided between the lock claw 91 and an elastic force in a direction protruding upward from the lock claw 91 by the spring SP. A guide surface 93 that gradually rises forward is formed on the rear surface side of the distal end of the lock claw 91, and the base end portion of the upper top plate 7 that is standing up comes into contact with and slides on the guide surface 93. Thus, the lock claw 91 is retracted downward against the elastic force of the spring SP. Then, as shown in FIG. 7, when the upper top plate 7 reaches the predetermined standing position Q, the lock claw 91 is aligned with the receiving hole 92 of the upper top plate 7, and the lock claw 91 is again turned on. It protrudes and engages with the receiving hole 92.
[0020]
On the other hand, the restriction release mechanism 8 uses the gravity acting on the keyboard KY placed at the retracted position T, for example, to release the closing restriction state by the closing restriction mechanism 9. Specifically, the restriction release mechanism 8 includes the movable plate 81 provided corresponding to the retracted position T, and a conversion element 82 that converts the lowering operation of the movable plate 81 into the immersion operation of the lock claw 91. It has. As an example of the conversion element 82, a wire WA as shown in FIGS. 3, 4, and 5 can be cited. That is, one end of the wire WA is attached to the lock claw 91 and the other end is attached to an intermediate position in the front-rear direction of the movable plate 81, and when the movable plate 81 is lowered, the lock is caused by the pulling action of the wire WA. As shown in FIG. 8, the nail 91 can be immersed downward.
[0021]
In this embodiment, the lower top plate 6 and the upper top plate 7 having the above-described structure are respectively arranged on both sides of the partition plate 5. A wagon for storing a computer main body or the like is provided at the boundary between the lower limb space F formed below the right lower top plate 6 and the lower limb space F formed below the left lower top plate 6. W is arranged.
Next, the operation of the desk 1 will be described. First, when the upper top plate 7 is closed at the closed position P as shown in the right side of FIG. 1 and FIG. 3, the upper top plate 7 covers the lower top plate 6. 7 is accommodated between the upper top plate 7 and the lower top plate 6. If necessary, the upper top plate 7 may be locked so as not to be opened in this state to prevent theft. When the upper top plate 7 is opened to the standing position Q as shown in the left side of FIG. 1, FIG. 2 and FIG. 4 from such a closed state, the monitor device M mounted on the inner surface of the upper top plate 7 is used. Will face the person. Therefore, by moving the keyboard KY and the mouse from the retracted position T on the lower top plate 6 to the use position S, it is possible to perform appropriate work and learning using the computer. At this time, when the keyboard KY is moved from the retracted position T to the use position S with the upper top plate 7 opened to the upright position Q, the upper top plate 7 stopped at the upright position Q is received. The lock claw 91 that has been immersed in the hole 92 rises and engages. On the other hand, when the keyboard KY is moved from the retracted position T to the transition position while the upper top plate 7 has not completely reached the standing position Q, the lock claw 91 is not engaged with the receiving hole 92, It will protrude upward. Therefore, when the upper top plate 7 is subsequently opened to the standing position Q, the base end portion of the upper top plate 7 comes into contact with the guide surface 93 of the lock claw 91 and slides as shown in FIG. The lock claw 91 is engaged with the receiving hole 92 after being forcedly immersed. In either case, when the locking claw 91 is engaged with the receiving hole 92, the upper top plate 7 is locked at the standing position Q, and the upper top plate 7 may be accidentally tilted to the user side together with the monitor device M. Disappears. Further, according to such a configuration, it is impossible to close the upper top plate 7 while leaving the keyboard KY at the use position S, so that the monitor device M and the keyboard KY interfere with each other to damage the liquid crystal screen or the like. Such an accident can be prevented.
[0022]
When the upper top plate 7 is closed at the closing position P at the user's will, first, the keyboard KY at the use position S is moved to the retreat position T set at a low position. As a result, the movable plate 81 provided at the retracted position T descends due to the gravity acting on the keyboard KY, and the lock claw 91 is pulled downward via the wire WA as shown in FIG. I will be immersed. Therefore, the engagement between the lock claw 91 and the receiving hole 92 is released, and the upper top plate 7 can be opened and closed. When the upper top plate 7 is closed to the closing position P in this state, the keyboard KY does not exist at the use position S, so that the monitor device M and the keyboard KY cannot interfere with each other.
[0023]
The closing restriction mechanism in the embodiment described above locks the upper top plate in the upright position, but the closing restriction mechanism of the present invention is not necessarily limited to this, for example, The movement of the upper top plate in the direction of the closing position may be restricted at an intermediate position between the closing position and the standing position.
Further, the configuration of the restriction release mechanism is not limited to that of the above-described embodiment. For example, it is detected that the keyboard is moved to the retracted position by an infrared ray or a tactile sensor, and the upper top plate is based on the signal. It is also conceivable to electromagnetically switch the lock state. However, if the locked state is released by using the gravity acting on the keyboard as described above, it is easy to simplify the configuration and it does not consume extra energy.
[0024]
Further, the retracted position of the keyboard is not necessarily limited to the back side of the lower top plate, but if the embodiment is used as described above, an effect that a leg space can be reasonably secured can be obtained.
[0025]
【The invention's effect】
As described above in detail, the desk according to the present invention opens and closes between a lower top plate that can support the keyboard and a standing position that covers the top of the lower top plate to a standing position that allows the user to face the inner surface. A desk that is configured so that a monitor device can be attached to the inner surface of the upper top plate, and when the upper top plate is opened, the upper top plate is in the closed position. A closing control mechanism for restricting the return, and detecting that the keyboard is moved to the retracted position when the keyboard placed at the use position of the lower top plate is moved to the retracted position that does not interfere with the monitor device. And a restriction releasing mechanism for releasing the closing restriction state by the closing restriction mechanism. Therefore, according to such a configuration, the upper top plate can be returned to the closed position only after the keyboard in the use position is moved to the retracted position. In other words, the upper top plate cannot be returned to the closed position while the keyboard is in the use position on the lower top plate. Therefore, it is possible to use a relatively thick monitor device without enlarging the storage space formed between the upper top plate and the lower top plate. In other words, it is possible to avoid storing the keyboard and the monitor device facing each other, so that the height position of the upper top plate is set to be unreasonably high, and the usability of the top plate surface is deteriorated, or the lower top plate is used. Thus, a thick monitor device can be installed without causing a problem that the operability of the keyboard is deteriorated by setting the height position of the display panel to be unduly low and the space of the lower limbs is narrowed.
[0026]
The back side area of the lower top plate is set lower than the use end side area, and the keyboard used in the use end side area can be retracted to the back side area when the upper top plate is closed. If it is a thing, a keyboard can be smoothly evacuated, without narrowing a leg space.
The closing restriction mechanism is such that the lock claw provided on one of the fixing member and the upper top plate is engaged with the claw receiving element provided on the other, and the operation of opening the upper top plate is used. When the lock claw is configured to be engaged with the claw receiving element, a holder is provided on the desk side plate as a fixing member, and the lock claw is held in the holder so as to be elastically retractable, and the upper top plate receives the claw holder. If a receiving hole is provided as an element and the upper couch reaches the standing position, the lock claw is configured to be engaged with the receiving hole through a temporary elastic retraction operation. Since it is possible to prevent the upper top plate from falling down, the user can operate the keyboard with peace of mind.
[0027]
On the other hand, it is also conceivable that the restriction release mechanism detects that the keyboard has been moved to the retracted position by infrared rays or a tactile sensor, and electromagnetically switches the lock state of the upper top plate based on the signal. However, it is assumed that the restriction release mechanism uses the gravity acting on the keyboard placed at the retracted position to release the closed restriction state by the close restriction mechanism. Specifically, the restriction release mechanism is retracted. A movable plate is provided corresponding to the position, and the movable plate is elastically lowered by the gravity acting on the keyboard placed on the movable plate. As long as the closing restriction state by the mechanism is released, the configuration can be easily simplified and no electric power or the like is required.
[Brief description of the drawings]
FIG. 1 is a perspective view showing a desk according to an embodiment of the present invention.
FIG. 2 is a front view showing a desk according to the embodiment.
FIG. 3 is a cross-sectional view showing the internal structure of the desk according to the embodiment.
FIG. 4 is a partial cross-sectional view showing the internal structure of the desk according to the embodiment.
FIG. 5 is a partial perspective view showing the internal structure of the desk according to the embodiment.
FIG. 6 is a schematic diagram showing the protrusion and subtraction operation of the lock claw of the same embodiment.
FIG. 7 is a schematic diagram showing a lock claw projecting and retracting operation of the embodiment.
FIG. 8 is a schematic diagram showing the protrusion and subtraction operation of the lock claw of the same embodiment.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Desk 2 ... Desk side board 6 ... Lower top plate 63 ... Back side area | region 64 ... Use end side area 7 ... Upper top board 8 ... Restriction release mechanism 81 ... · Movable plate 9 ··· Closed restricting mechanism 91 ··· Lock claw 92 ··· Hole H ··· Holder KY ··· Keyboard M ··· Monitor device P ··· Closed position Q ··· Standing position S ... Use position T ... Retraction position

Claims (6)

A lower top plate that can support the keyboard, and an upper top plate that can be opened and closed between a closed position that covers the lower top plate and a standing position that allows the user to face the inner surface, A desk configured to allow the monitor device to be mounted on the inner surface of the upper top plate, and a lower control mechanism for restricting the upper top plate from returning to the closed position when the upper top plate is opened; A restriction release mechanism for detecting that the keyboard has moved to the retracted position when the keyboard placed at the board use position is moved to a retracted position that does not interfere with the monitor device, and releasing the restriction state by the closing restriction mechanism; The desk characterized by comprising. The back side area of the lower top plate is set lower than the use end side area, and the keyboard used in the use end side area can be retracted to the back side area when the upper top plate is closed. The desk according to claim 1. The closing restriction mechanism is such that the locking claw provided on one of the fixing member and the upper top plate is engaged with the claw receiving element provided on the other, and the operation of opening the upper top plate is used. The desk according to claim 1, wherein the lock claw is configured to be engaged with the claw receiving element. A holder is provided on the desk side plate which is a fixing member, and the lock claw is elastically slidably held in the holder, and a receiving hole which is a claw receiving element is provided in the upper top plate so that the upper top plate reaches the standing position. The desk according to claim 3, wherein the lock claw is configured to engage with the receiving hole through a temporary elastic retraction operation. The desk according to claim 1, 2, 3, or 4, wherein the restriction release mechanism uses the gravity acting on the keyboard placed in the retracted position to release the closed restriction state by the closure restriction mechanism. . A movable plate is provided corresponding to the retracted position, and the movable plate is elastically lowered by gravity acting on the keyboard placed on the movable plate, and is closed using the lowering operation of the movable plate. 6. The desk according to claim 5, wherein the closing restriction state by the restriction mechanism is released.

Images