JP6687945B2 - desk - Google Patents

Description

  The present invention relates to a desk that can lift wheels.

  When a desk is moved, the caster is lowered to bring the caster into a grounded state, and when the desk is used, a desk with an elevating caster is proposed to raise the caster so that the desk does not move freely. For example, in the desk disclosed in Patent Document 1, in adjusting the position of the desk, the caster is lowered to facilitate the movement of the desk in conjunction with the operation of bringing the deck of the desk into a substantially vertical state. When using, return the deck of the desk to the horizontal state to raise the casters and ground the desk to prevent it from moving.

JP2011-244845A

  However, in order to move the desk from the grounded state to the movable state in conjunction with changing the deck from the horizontal state to the vertical state, the work of changing the deck from the horizontal state to the almost vertical state is performed by a user, for example, a desk. For elementary school students who do this, it is not easy and complicated.

  The present invention has been made in view of the above, and an object thereof is to easily move from a non-movable state to a movable state by grounding the desk when moving the desk without changing the state of the deck. It is to provide a desk that can be changed to.

  In order to achieve the above object, the desk according to claim 1 includes a deck, support legs that support the deck, wheels provided on the support legs and grounded to a floor, an operation unit, and the operation. By lowering the wheel of the support leg toward the floor surface by operating a section, the support leg is lifted from the floor surface to enable the support leg to be moved by the wheel, and And a lifting mechanism section that lowers the support leg to the floor surface and grounds the support leg to the floor surface by raising the wheels of the support leg by releasing the support leg.

  In the desk according to claim 1, the elevator mechanism of the desk lowers the wheels of the support legs toward the floor surface by operating the operation unit, thereby raising the support legs from the floor surface and moving the support legs by the wheels. It is movable. Moreover, by lifting the wheels of the support legs by releasing the operation of the operation unit, the support legs are lowered to the floor surface and the support legs are grounded to the floor surface. Therefore, unlike the prior art, when the desk is moved, it is possible to easily change the immovable state from the immovable state to the movable state without changing the state of the deck.

  The desk according to claim 2, wherein the operation portion is arranged on a lower surface side of the deck so as to be manually operable from a front portion on a front side of the deck and a side portion of the deck. Characterize.

  In the desk according to the second aspect, the operation portion can be manually operated from both the front portion on the front side of the deck and the side portion of the deck, and the desk can be easily moved.

  The desk according to claim 3, wherein the support leg includes a leg portion and a column that supports the deck with respect to the leg portion, and the elevating mechanism portion supports the wheel so as to be capable of ascending and descending. And the support member is disposed in the leg, the wheel is supported by the support member in the leg, and the wheel allows the support leg to move on the floor surface. Therefore, the wheel can rotate about a rotation axis, and the wheel can turn about a turning axis to change a moving direction on the floor surface.

  In the desk according to claim 3, since the wheels are in the legs, the wheels do not hit the foot of the user, and the wheels can rotate around the rotation axis, so that the desk can move on the floor surface. The table can be swiveled around the swivel axis, so the desk can swivel on the floor. Therefore, when trying to move the desk, the desk can be moved in a desired direction.

  In the desk according to claim 4, by the operation of the operation unit, the lifting mechanism unit pushes down the support member supporting the wheels in an obliquely downward direction with respect to the floor surface, thereby supporting the support member. It is characterized in that the legs are raised from the floor surface and the supporting legs are movable by the wheels.

  In the desk according to the fourth aspect, by operating the operation unit, the elevating mechanism unit can push down the support member and the wheel diagonally downward with respect to the floor surface. Therefore, compared to pushing down the wheels vertically to the floor surface, when you try to move the desk, the wheels rotate on the floor surface, allowing you to lift and move the desk with a lighter force. It can be in a different state.

  The desk according to claim 5, wherein the elevating / lowering mechanism portion has a vertically interlocking member that is disposed in the column, has an upper end portion connected to the operation portion, and a lower end portion connected to the support member, The leg portion has an inclined guide portion that guides the support member in the obliquely downward direction by lowering the vertical interlocking member by the operation of the operation unit.

  In the desk according to the fifth aspect, the tilt guide portion can surely guide the support member and the wheel diagonally downward by operating the operation portion to lower the vertical interlocking member in the support column.

  The desk according to claim 6 is characterized in that the leg portion has a bulge portion for accommodating the wheel supported by the support member in the leg portion.

  In the desk according to the sixth aspect, when it is desired to secure the inner size of the desk as much as possible, the wheels capable of turning 360 degrees can be housed in the legs. Even if the desk is a large wheel, for example, a twin-wheel type wheel, the wheel can be accommodated in the leg portion due to the bulged portion. By using these large wheels, it is possible to stably run and change the direction of the desk and easily adjust the position of the desk according to the layout of the desk.

  According to the present invention, it is possible to provide a desk that can be easily changed from a non-movable state to a movable state by moving the desk while moving the desk without changing the state of the deck.

It is a perspective view which shows the preferable embodiment of the desk of this invention. FIG. 3 is a left side view showing an internal structure example of the desk shown in FIG. 1 and showing a state in which the desk is grounded on a floor surface F and cannot move. FIG. 4 is a left side view showing a state where the caster of the desk shown in FIG. 2 is pushed down and the desk is movable. It is a bottom view of a desk which shows the lower side of a support leg and a deck. FIG. 6 is a side view showing a structural example of a lifting mechanism section and showing a state in which a desk is grounded on a floor surface F and cannot move. It is a figure which shows the caster support member for upper and lower and the caster C arrange | positioned in the leg part on either side.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

(Overall structure of desk 1)
FIG. 1 is a perspective view showing a preferred embodiment of the desk of the present invention. FIG. 2 is a left side view showing an example of the internal structure of the desk 1 shown in FIG. 1 and showing a state in which the desk 1 is grounded on the floor surface F and cannot move. FIG. 3 is a left side view showing a state in which the casters C of the desk 1 shown in FIG. 2 are pushed down and the desk 1 can be moved by the casters C. The right side of the desk 1 shown in FIGS. 1 to 3 is the user's right hand side with respect to the direction T in which the user of the desk 1 sits on a chair and uses the desk 1, and the left side of the desk 1 is the desk 1 It is the left hand side of the user in the direction T in which the user sits on the chair and uses the desk 1.

  The desk 1 shown in FIGS. 1 to 3 is a learning desk used in, for example, a classroom of a school. When the user is using the desk 1, the desk 1 is installed so as not to move with respect to the floor surface F of the classroom. However, in the classroom, in order to cope with a new learning mode in which the layout of the desks 1 is frequently changed, the desks 1 may be moved and rearranged to have a predetermined layout, for example, a circular layout. In this case, each desk 1 can be changed from a state in which it cannot move on the floor F to a state in which it can move on the floor F using a plurality of casters C as wheels.

  As shown in FIGS. 1 to 3, the desk 1 has, for example, a rectangular deck 2 and support legs 3. The deck 2 is also called a top plate, and is, for example, a metal plate or a wooden plate. The support legs 3 fix the lower surface 2M of the deck 2 and support the deck 2 at a predetermined height position with respect to the floor surface F, and are preferably made of metal. As shown in FIGS. 2 and 3, a metal shelf 4 for storing teaching materials and the like is fixed to the lower surface 2M of the deck 2 with screws or the like. The shelf 4 has, for example, hooks 5 on both sides thereof for suspending a bag or the like. As shown in FIG. 1, the left and right columns 21 of the support leg 3 are fixed by screws or the like using the horizontal rail 6.

(Support leg 3)
Next, a preferred structure example of the support leg 3 will be described with reference to FIGS. 1 to 4.

  FIG. 4 is a bottom view of the desk 1 showing the support legs 3 and the lower surface 2M side of the deck 2, and shows the shelves 4, the horizontal rails 6, and the like.

  As shown in FIG. 1, the support leg 3 supports the deck 2 in a fixed state. The support leg 3 has left and right support portions 11. The left and right support portions 11 are bilaterally symmetrical. The left and right support portions 11 of the support leg 3 have a total of four casters C for movement.

  As shown in FIG. 2, the left and right support portions 11 each include a deck receiver 20, a column 21, and a leg portion 22. The columns 21 of the right support portion 11 are inclined at an acute angle θ with respect to the Z direction which is a vertical line of the floor surface F. One end of the deck receiver 20 is fixed near the upper end of the column 21. One end of a leg 22 is fixed near the lower end of the column 21. The lower surface 2M side of the deck 2 is fixed to the upper surface of the deck receiver 20 by, for example, a screw while being placed on the upper surface of the deck receiver 20. The structure of the right side support portion 11 and the left side support portion 11 have a symmetrical shape, and the structures are the same.

  As shown in FIG. 2, the left and right deck receivers 20 are parallel to each other along the X direction. Each deck receiver 20 is provided so as to project from the upper ends of the columns 21 along the X direction, and the lower surface 2M of the deck 2 is fixed by the left and right deck receivers 20 in a horizontal state along the X direction, for example.

  The left and right leg portions 22 shown in FIGS. 1 and 2 are arranged in parallel at intervals along the X direction. The left and right columns 21 are hollow metal pipe members. Further, as will be described later with reference to FIG. 6, the left and right leg portions 22 are, for example, hollow members made of metal and having a substantially inverted U-shaped cross section. The X direction (front-back direction), the Y direction (horizontal direction), and the Z direction (vertical direction) shown in FIGS. 2 and 3 are orthogonal to each other.

  Next, the operation unit 40 and the lifting mechanism unit 50 will be described with reference to FIGS. 2 to 4.

(Operation unit 40)
First, the operation unit 40 will be described.

  As shown in FIG. 2, the operation unit 40 includes left and right handles 41, left and right handle frames 43, and one handle joint pipe 45. The handle 41 is fixed to the front end of the handle frame 43. The left and right handles 41 are bilaterally symmetrical, and the left and right handle frames 43 are also bilaterally symmetrical.

  As illustrated in FIG. 1, the left and right handles 41 are portions that a user of the desk 1 directly operates with fingers HD, and are preferably made of resin. The left and right handles 41 are lifting levers that are lifted up in the R direction by using the user's fingers HD when lifting the desk 1.

  The left and right handles 41 shown in FIGS. 1 and 2 are arranged at the right side position and the left side position of the deck 2 on the lower surface 2M side of the deck 2. As a result, in order to operate the left and right handles 41, the user brings the fingers HD close to the left and right handles 41 from the front side portion 2A side of the deck 2 and either of the left and right side portions 2B and 2B sides. be able to. Therefore, when moving the desk 1, the user can easily change the desk 1 from a non-movable state to a movable state by easily grasping the left and right handles 41 directly and performing a lift-up operation. can do. Further, since the left and right handles 41 are arranged on the lower surface 2M side of the deck 2 and are not exposed on the side or upper surface side of the deck 2, the left and right handles 41 are used when learning is performed using the desk 1. The presence of the handle 41 does not hinder the appearance and the appearance can be secured.

  As shown in FIGS. 2 and 3, the left and right handle frames 43 are arranged in parallel along the X direction on the lower surface 2M side of the deck 2. One end portion and the other end portion of one handle joint pipe 45 are fixed to the left and right handle frames 43, respectively. The handle joint pipe 45 is rotatably attached to the left and right deck receivers 20. As a result, the left and right handle frames 43 can be rotated about the handle joint pipe 45 with respect to the deck receiver 20 by the manual operation of the left and right handles 41 by the user's fingers HD.

  As shown in FIG. 2, the left and right handle frames 43 have a linear portion 43A, a mounting portion 46 of the handle 41, a rear connecting portion 47, and a bent portion 49. In this handle frame 43, the distance S1 of the straight portion 43A from the attachment portion 46 of the handle 41 to the handle joint pipe 45 is larger than the distance S2 from the handle joint pipe 45 to the pin 60P of the joint portion 60 of the rear joint portion 47. , Is set large.

  As a result, as shown in FIGS. 2 to 3, the user directly grips the left and right handles 41 and lifts them in the R direction, so that the left and right handle frames 43 receive the deck receiving plate as a fixing portion. With respect to 20, the handle joint pipe 45 can be rotated and lifted against the weight of the desk 1 with a comparatively small force by using the "lever principle" with the rotation center as the center of rotation.

(Elevation mechanism part 50)
Next, the elevating mechanism section 50 will be described with reference to FIGS. 2 to 5.

  FIG. 5 is a side view showing a structural example of the elevating mechanism section 50 and showing a state in which the desk 1 is grounded on the floor surface F and cannot move.

  As shown in FIGS. 2 to 3, the lifting mechanism unit 50 connects the support member 52 of the caster C and the handle frame 43 of the operation unit 40. By operating the left and right handles 41 in the R direction by the user's fingers HD, the elevating mechanism section 50 is operated, and the plurality of casters C of the support leg 3 are lowered in the diagonal downward direction G. As a result, the support leg 3 is lifted from a state in which the support leg 3 is in contact with the floor surface F and cannot move, thereby making the support leg 3 movable. The user can freely move the position of the desk 1 using the plurality of casters C to adjust or finely adjust the position of the desk 1, and the rearrangement of the desk 1 can be easily performed.

  The elevating mechanism section 50 shown in FIG. 2 is disposed inside the columns 21 of the left and right support portions 11 and inside the left and right legs 22. The lifting mechanism unit 50 corresponds to the left and right handle frames 43 of the operation unit 4, the left and right vertical interlocking members 51, the left and right caster supporting members 52 for supporting the casters C, and the first left and right members. The guide member 53, the left and right second guide members 54, a total of four casters C, the left and right adjusters 55, and the left and right ground portions 64 are provided.

  As shown in FIG. 2, the vertical interlocking member 51 passes through the inside of the column 21 along the longitudinal direction. The vertical interlocking member 51 is, for example, a steel pipe having excellent strength. As shown in FIG. 2, a coupling tool 60 is inserted and fixed to the upper end portion 51A of the vertical interlocking member 51. The pin 60P of the connecting portion 60 rotatably connects the upper end portion 51A of the vertical interlocking member 51 and the rear connecting portion 47 of the handle frame 43. A link component 61 is fitted and fixed to the lower end portion 51B of the vertical interlocking member 51.

  As shown in FIG. 5, the link component 61 has a hook 62 having a substantially C shape. As shown in FIG. 2, the first guide member 53 is fixed to the lower end of the column 21. Returning to FIG. 5, the first guide member 53 has a first inclined guide portion 65, and the first inclined guide portion 65 guides the hook 62 of the link component 61 at an angle of 45 degrees, for example. Have a function.

  Further, as shown in FIG. 5, the first guide member 53 is integrally formed with the ground contact portion 64. The grounding portion 64 is a stopper placed on the floor surface F when the desk 1 is installed on the floor surface F so as not to move. The first guide member 53 is preferably made of resin so that the desk 1 does not move with respect to the floor surface F and does not damage the floor surface F. The first inclined guide portion 65 of the first guide member 53 shown in FIG. 5 is inclined with respect to the floor surface F by an angle P. The most preferable angle P is 45 degrees.

  On the other hand, the adjuster 55 shown in FIG. 5 is also a stopper for finely adjusting the height level and placing it on the floor F when the desk 1 is installed on the floor F so as not to move. The adjuster 55 is preferably made of resin so that the desk 1 does not move with respect to the floor surface F and does not damage the floor surface F.

  The upper part of the adjuster 55 shown in FIG. 5 serves as a second guide member 54. The second guide member 54 has a second inclined guide portion 70. The second inclined guide portion 70 is inclined with respect to the floor surface F by an angle Q. As with the angle P, the most preferable angle Q is 45 degrees.

  The most preferable angles P and Q are 45 degrees. Since the four casters C are pushed down with respect to the floor surface F along the pushing direction G at an angle of 45 degrees, the casters C rotate on the floor surface F as compared with the case where the casters C are pushed vertically downward. The desk 1 can be lifted with a lighter force.

  However, the angles P and Q are not limited to 45 degrees, and may be, for example, preferably in the range of 20 degrees to 60 degrees. Preferably, when the angle P and the angle Q are less than 20 degrees, when the user lifts up the handle 41 in the R direction, the push-up amount D for lifting the desk 1 shown in FIG. 3 cannot be secured up to about 10 mm. It is not preferable. Further, if the angle P and the angle Q exceed 60 degrees, the push-up amount D by which each caster C lifts the desk 1 becomes undesirably larger than about 10 mm.

  Next, the upper and lower caster support members 52 shown in FIGS. 2 and 5 will be described.

  The upper and lower caster support members 52 are respectively housed inside the leg portions 22 as shown in FIGS. 2 and 4. The caster support member 52 for up and down shown in FIG. 5 is a metallic plate-like member such as a steel plate. The up-down caster support member 52 is a support member of the caster C that is pushed down in the obliquely downward direction G together with the caster C.

  As shown in FIG. 5, the upper and lower caster support members 52 have a first end 81 and a second end 82. A caster C is attached near the first end 81 of the up / down caster support member 52, and another caster C is attached near the second end 82 of the up / down caster support member 52. ing. The two casters C are rotatable about the swing axis LL with respect to the upper and lower caster support members 52. In addition, the caster C is rotatable about the rotation axis RL with respect to the upper and lower caster support members 52. The casters C are made of, for example, resin so as not to damage the floor surface F.

  As shown in FIG. 5, an engagement pin 81P is provided on the first end 81 of the caster support member 52 for vertical movement. The engagement pin 81P engages with the hook 62 of the link component 61. Therefore, the lower end portion 51B of the vertical interlocking member 51 and the first end portion 81 of the leg portion 22 are rotatably connected by the engagement pin 81P and the hook 62 of the link component 61.

  On the other hand, an engagement pin 82P is provided on the second end portion 82 of the caster support member 52 for vertical movement. The engagement pin 82P fits in the guide groove portion 70A of the second inclined guide portion 70.

  As a result, when the vertical interlocking member 51 shown in FIG. 5 is pushed down in the H direction, which is the pushing down direction, the engagement pin 81P of the first end portion 81 of the vertical caster support member 52 and the hook 62 of the link component 61 are connected. The body is pushed down along the first tilt guide portion 65 in the pushing direction G at an angle of 45 degrees, and the engagement pin 82P of the second end portion 82 of the up-and-down caster support member 52 is also tilted to the second tilt. It is pushed down along the guide portion 70 along the pushing direction G of 45 degrees diagonally.

  Therefore, when the casters C are pushed down along the pushing direction G, the entire desk 1 is relatively pushed up by the pushing amount D as shown in FIG. The push-up amount D is, for example, about 10 mm so that the desk 1 can easily move on the floor surface F. In this state, the ground portion 64 and the adjuster 55 are separated from the floor surface F, so that the desk 1 can be moved using the four casters C.

  FIG. 6 is a diagram showing caster support members 52 and casters C for up and down arranged in the left and right legs 22.

  As shown in FIG. 6, the left and right leg portions 22 are bilaterally symmetrical. Each leg 22 has a substantially inverted U-shaped cross section. The leg portion 22 has a flat inner portion 22A, an upper portion 22B having a semicircular cross section, and a bulged outer bulged portion 22C. The lower surface side of each leg portion 22 is an open portion 22R for the casters C to be taken in and out. The plate-shaped upper and lower caster support members 52 and the casters C are housed in the left and right leg portions 22, respectively.

  As shown in FIG. 6, in the leg portion 22, the upper and lower caster support members 52 are arranged in the Z direction (vertical direction) along substantially the center line of the upper portion 22B having a semicircular cross section. In each leg portion 22, the turning axis LL of the caster C is located on the side of the bulging portion 22C outside the caster supporting member 52 for vertical movement.

The inner dimension L1 of the left and right legs 22 shown in FIG. 6 is defined by the standard when the desk 1 is used in a school. Also, I want to secure the inner dimension L1 as wide as possible so that the chair can be put under the desk even when it is used outside the school. In this way, when it is desired to secure the inner dimension L1 and a caster capable of turning 360 degrees is used, the turning axis LL of the caster C is arranged outside the caster support member 52. That is, the turning axis LL of the caster C is offset to the outside. By providing the outer bulging portion 22C on the leg portion 22, it is possible to store the caster C capable of turning 360 degrees in the leg portion 22 while ensuring the inner dimension L1.
Further, as the casters C, twin-wheel type wheels are used. Even if the caster C, which is a twin-wheel type wheel, is used, it can be housed in the leg portion 22 by the bulging portion 22C. Therefore, the caster C, which is a twin-wheel type wheel, can stably perform the traveling and the direction change of the desk 1, and adjust the position of the desk 1 according to the arrangement form of the desk 1, particularly the position of the desk 1. Easy fine adjustment.

(Example of using desk 1)
Next, a usage example of the desk 1 having the above-described structure will be described.

  As shown in FIG. 1 and FIG. 2, when the user does not operate the left and right handles 41 of the desk 1, the casters C in the legs 22 are placed on the floor surface F when the desk 1 is not movable. It is grounded, and each grounding portion 64 of the leg portion 22 and each adjuster 55 are grounded to the floor surface F. Since the ground contact portion 64 and the adjuster 55 are grounded to the floor surface F in this manner, the position of the desk 1 is fixed so as not to move with respect to the floor surface F.

  In this fixed state of the desk 1, if the desk 1 rattles against the floor F due to the unevenness of the floor F or the like, the adjuster 55 is rotated to finely adjust the height level of the adjuster 55. To do. Thereby, the desk 1 can be fixed to the floor surface F in a stable state.

  Next, when the user wants to move the desk 1 to change the layout of the desk 1, the user is positioned on the lower surface 2M side of the deck 2 using the left and right fingers HD as illustrated in FIG. The left and right handles 41 for lifting up are lifted up in the R direction.

  The user lifts the left and right handles 41 with the fingers HD shown in FIG. 1 in order to lift the fingers HD from either the front end side portion 2A side of the deck 2 or the left and right side portions 2B, 2B side. Also, the left and right handles 41 can be lifted up by bringing them closer to the left and right handles 41. Therefore, even if the user is, for example, a child or elementary school student, the left and right handles 41 can be easily grasped and operated, and the left and right handles 41 can be lifted up in the R direction and kept grasped. In the state, the desk 1 can be pushed to move.

  When the user directly grips the left and right handles 41 and lifts them in the R direction with the force of both hands, the handle frame 43 compares the left and right up and down interlocking members 51 with the handle joint pipe 45 as the center of rotation. Large power can be given with a small power. Therefore, the desk 1 can be lifted from the floor surface F against the weight of the desk 1.

  In this way, when the left and right handle frames 43 rotate in the R direction with the handle joint pipe 45 as the center of rotation, the vertical interlocking member 51 shown in FIG. 5 is pushed down in the H direction. As a result, the coupling body of the engagement pin 81P of the first end 81 of the caster support member 52 for up and down and the hook 62 of the link component 61 is pushed along the first inclined guide portion 65 in the downward direction G of 45 degrees. Is pushed down along. At the same time, the engagement pin 82P of the second end portion 82 of the caster support member 52 for vertical movement is pushed down along the second inclined guide portion 70 along the pushing direction G of 45 degrees obliquely. That is, the four casters C in total on the left and right are simultaneously pushed down to the floor F along the pushing direction G of 45 degrees diagonally.

  Thus, when the casters C are pushed down along the pushing-down direction G, the entire desk 1 is relatively pushed up from the floor surface F by the pushing-up amount D, as shown in FIGS. 2 to 3. When the desk 1 is pushed up, the ground contact portion 64 and the adjuster 55 are completely separated from the floor surface F. Therefore, the user can move the desk 1 by using the four casters C.

  As described above, since the four casters C are pushed down with respect to the floor surface F along the pushing direction G of 45 degrees diagonally, the desk 1 is lifted with a lighter force as compared with the case where the casters are pushed vertically. be able to. By pushing the casters C downward by 45 degrees with respect to the floor surface F, the rotation of the two-wheel casters C is promoted, the rotation of the casters C is prevented from being caught, and the desk 1 can be lifted with a light force.

  A total of four casters C of the leg portion 22 shown in FIG. 1 are attached to the upper and lower caster support members 52 which are support members so as to be accommodated in the leg portion 22 as already described. As shown in FIG. 6, the caster C is rotatable about the rotation axis RL in order to make the support leg 3 movable, and the caster C is rotated around the rotation axis LL in order to change the moving direction of the support leg 3. It is possible to turn around. Therefore, the user can not only move the desk 1 forward and backward but also turn the desk 1 and easily move the desk 1 to a desired position.

  Next, when the user finishes moving the desk 1 according to the layout of the desk 1, the user releases the left and right handles 41 from the state in which the desk 1 is held, so that the desk 1 can be moved as shown in FIGS. The four casters C move up into the left and right leg portions 22 due to their own weight, and the desk 1 lowers. That is, since the entire desk 1 is relatively lowered by the push-up amount D shown in FIG. 3, the engaging pin 81P of the first end portion 81 of the up and down caster support member 52 and the hook of the link component 61 shown in FIG. The connecting body of 62 is pushed up along the first inclined guide portion 65 in the direction opposite to the pushing direction G of 45 degrees obliquely, and the second end portion 82 of the caster supporting member 52 for up and down engagement. The pin 82P is pushed up along the second inclined guide portion 70 in a direction opposite to the pushing direction G inclined 45 degrees.

  Therefore, as shown in FIGS. 3 to 2, the left and right handle frames 43 rotate in the R1 direction around the handle joint pipe 45 as a rotation center, and the left and right handles 41 return to the original positions shown in FIG. When the user releases the left and right handles 41, the casters C are lifted together with the upper and lower caster support members 52 in the direction opposite to the downward pressing direction G. At this time, each caster C 1 is guided by the leg portion 22 serving as a caster cover so as to be in the same direction as shown in FIGS. 1 and 2, and is stored in the leg portion 22.

  In a state in which the desk 1 cannot be moved, as shown in FIGS. 2 and 5, each caster C in the leg portion 22 is grounded to the floor surface F, and each ground portion 64 in the leg portion 22 and each Since the adjuster 55 is grounded on the floor surface F, the desk 1 is fixed to the floor surface F so as not to move.

  The desk 1 of the embodiment of the present invention, unlike the conventional one, does not require the work of moving the top plate from the horizontal state to the substantially vertical state in order to finely adjust the position of the desk, and the deck 2 is kept in the horizontal state. Thus, the desk 1 can be easily moved on the floor surface F by using the casters C, and the desk 1 can be easily fixed on the floor surface F. Regardless of the state of the top plate 2, the desk 1 allows the user to operate the handle 41 to control the raising and lowering of the plurality of casters C, thereby reducing the complicated operation of placing the top plate 2 in a substantially vertical state. Therefore, even a user such as an elementary school student can easily move the desk 1.

  In order to cope with a new learning mode in which the layout of the desk 1 is frequently changed, the desk 1 is preferably a stable caster C that can move forward / backward or rotate 360 degrees as illustrated in FIG. As you can see, it uses twin-wheel casters.

  As described above, the desk 1 according to the embodiment of the present invention includes the deck 2, the support legs 3 that support the deck 2, the casters C as wheels that are provided on the support legs 3 and are grounded to the floor surface F, By operating the operation unit 40 and the casters C as wheels of the support leg 3 being lowered toward the floor surface F by operating the operation unit 40, the support leg 3 is raised from the floor surface F and the support leg 3 is used as a wheel. The casters C are made movable, and the casters C as wheels of the support legs 3 are lifted by releasing the operation of the operation unit 40, so that the support legs 3 are lowered to the floor surface F and the support legs 3 are grounded to the floor surface F. An elevating mechanism section 50 is provided.

  As a result, the lift mechanism 50 of the desk 1 lowers the casters C as wheels toward the floor surface F to raise the support legs 3 from the floor surface and move the support legs 3 by the casters C as wheels. to enable. Moreover, by releasing the operation of the operation unit 40 to raise the casters C as wheels, the supporting legs 3 can be lowered to the floor surface F and the supporting legs 3 can be grounded to the floor surface F. Therefore, in the desk 1 of the embodiment of the present invention, unlike the conventional case, when the desk 1 is moved without changing the state of the deck 2, the desk 1 is grounded to be movable from the immovable state. Can be easily changed to.

  The operation unit 40 is arranged on the lower surface side of the deck 2 so that the operation unit 40 can be manually operated from the front portion on the front side of the deck 2 and from the side portion of the deck 2. This allows the user to easily move the desk 1.

  The support leg 3 includes a leg portion 22 and a column 21 that supports the deck 2 with respect to the leg portion 22, and the elevating mechanism portion 50 includes a support member 52 that supports the caster C as a wheel so that the caster C can be raised and lowered. The support member 52 is arranged in the leg portion 22, and the caster C as a wheel is supported by the support member 52 in the leg portion 22. The caster C as a wheel is rotatable around the rotation axis RL so that the support leg 3 can be moved on the floor F, and the caster C as a wheel changes its moving direction on the floor F. Therefore, it is possible to turn around the turning axis LL.

  As a result, the casters C as wheels do not hit the feet of the user, and the casters C as wheels can rotate around the rotation axis RL, so that the desk 1 can move on the floor surface F and casters as wheels. Since C can swivel around the swivel axis LL, the desk 1 can swivel on the floor surface F. Therefore, when trying to move the desk 1, the desk 1 can be moved in a desired direction.

  By operating the operation unit 40, the elevating mechanism unit 50 pushes down the support member 52 supporting the casters C as wheels in the diagonal downward direction G with respect to the floor surface F, so that the support legs 3 are moved to the floor surface F. And the supporting legs 3 are made movable by the casters C as wheels. As a result, as compared to pushing down the casters in the vertical direction with respect to the floor surface F, when the desks 1 are to be moved, the casters rotate on the floor surfaces, so that the desks 1 can be lowered with a lighter force. It can be lifted from the surface F to be movable.

  The elevating mechanism section 50 has an up-and-down interlocking member 51 which is arranged in the support column 21 and whose upper end is connected to the operating section 40 and whose lower end is connected to the supporting member 52. The leg section 22 is connected to the operating section 40. When the vertical interlocking member 51 is lowered by the operation of, the inclined guide portion (for example, the first inclined guide portion 65 and the second inclined guide portion 70) that guides the support member 52 in the oblique downward direction G is provided. As a result, by operating the operation unit 40 to lower the vertical interlocking member 51 in the support column 21, the inclined guide portions (65, 70) cause the support member 22 and the casters C as wheels to move in the oblique downward direction G. You can be sure to guide.

  The leg portion 22 has a bulge portion 22C for accommodating the caster C as a wheel supported by the support member 52 in the leg portion 22. As a result, when it is desired to secure the inner dimension L1 as much as possible, the caster C capable of turning 360 degrees can be housed in the leg portion 22. Even if the desk 1 uses a large wheel, for example, a caster C as a twin-wheel type wheel, the caster C can be housed in the leg portion 22 by the bulging portion 22C. The large caster C can stably run and change the direction of the desk 1, and can easily adjust the position of the desk 1 according to the layout of the desk 1, and particularly finely adjust the position of the desk 1.

  The present invention has been described above with reference to the embodiments, but each embodiment is an example, and the scope of the invention described in the claims can be variously modified without departing from the gist of the invention. . The respective embodiments of the present invention can be arbitrarily combined.

  The desk of the present invention is not limited to a desk for learning used in a classroom of a school, but may be a desk or a table used in an office or a conference room, for example.

  The handle 41 of the operation unit 40 can be manually operated from the front side of the front side of the deck 2 and the side of the deck 2 by bringing fingers close to each other, and the handle 41 is arranged on the lower surface side of the deck 2. Has been done. However, the present invention is not limited to this, and the operation unit 40 may be provided in another portion of the desk 1, for example, in a portion on the back side of the deck 2.

  The handle 41 shown in FIGS. 2 and 3 is not provided with a stopper or a spring. However, if necessary, a stopper for stopping the rotation of the handle 41 in the R direction can be provided between the handle 41 and the lower surface 2M of the deck 2. A spring may be arranged between the handle 41 and the lower surface 2M of the deck 2 so that the user lifts the handle 41 in the R direction against the force of the spring.

1 desk 2 deck (also called top)
3 Support leg 11 Support part of support leg 20 Deck receiving 21 Strut 22 Leg 40 Operation part 41 Handle of operation part 50 Lifting mechanism part 51 Vertical interlocking member 52 Vertical caster support member (example of caster support member)
53 first guide member 54 second guide member 64 ground contact portion 65 first inclined guide portion (inclined guide portion)
70 Second inclined guide portion (inclined guide portion)
C caster (wheel)

Claims (6)

The deck,
Support legs for supporting the deck,
A support member provided in the support leg,
A wheel provided on the support leg and grounded on the floor,
Operation part,
By lowering the wheel of the support leg toward the floor surface by operating the operation unit, the support leg is lifted from the floor surface to make the support leg movable by the wheel, and By raising the wheels of the supporting legs by releasing the operation, an elevating mechanism unit that lowers the supporting legs to the floor surface and grounds the supporting legs to the floor surface,
Equipped with
The elevating mechanism section includes two pairs of grounding portions provided on the lower portion of the support leg, a first guide member provided on an upper portion of a pair of grounding portions of the two pairs of grounding portions, and A second guide member provided above the pair of grounding portions,
The first guide member has a first inclined guide portion inclined to the floor surface, and the second guide member has a second inclined guide portion inclined to the floor surface,
A desk, wherein an engaging pin provided on the support member moves along the first tilt guide portion and the second tilt guide portion to move the support member up and down.   The said operation part is arrange | positioned at the lower surface side of the said deck so that it can be manually operated also from the front part of the front side of the said deck, and also from the side part of the said deck. desk. The support leg has a leg portion and a column that supports the deck with respect to the leg portion,
The elevating mechanism section has a supporting member that supports the wheel so that the wheel can be moved up and down, and the supporting member is
Located in the leg, the wheel is supported by the support member in the leg,
The wheel is rotatable about an axis of rotation to allow the support leg to move on the floor, and the wheel is centered on a turning axis to change the direction of movement on the floor. The desk according to claim 1 or 2, wherein the desk is rotatable.   By the operation of the operation unit, the elevating mechanism unit pushes down the support member supporting the wheels in a diagonally downward direction with respect to the floor surface, thereby raising the support leg from the floor surface. The desk according to claim 3, wherein the support leg is movable by the wheel. The elevating mechanism section has an up-and-down interlocking member that is disposed in the column and has an upper end portion connected to the operation portion and a lower end portion connected to the support member,
The desk according to claim 4, wherein the leg portion has an inclined guide portion that guides the support member in the obliquely downward direction by lowering the vertical interlocking member by the operation of the operation portion.   The desk according to claim 3, wherein the leg portion has a bulge portion for accommodating the wheel supported by the support member in the leg portion.

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