JP3485100B2 - Moving table - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a moving table which is provided with a moving means such as a caster at a lower portion thereof and is configured to be able to move a heavy object such as a projector.

[0002]

2. Description of the Related Art Generally, a moving table is composed of a base having a caster at the bottom and a table supported above the base via a supporting member. A projector, which is an example of a heavy object, is placed on the upper surface of the moving table configured as described above so that the moving table can be easily moved.

[0003]

In the structure in which the projector is mounted on the upper surface of the table as described above, the upper surface of the table is almost completely filled with the projector, so that the table cannot be used as a table. Other things could not be placed.
In addition, troubles such as contacting another object with the projector placed on the upper surface of the table may occur.

In view of the above situation, what the present invention seeks to solve is that the upper surface of the table can be used,
Moreover, it is a point to provide a moving table that can prevent another object from coming into contact with a heavy object such as a projector.

[0005]

In order to solve the above problems, the present invention provides a base having a moving means at a lower portion and a position holding means for disabling movement by the moving means. And a table supported via a supporting means projecting upward from the base, and a mounting portion suspended and supported from the table for mounting and supporting a heavy object at a lower portion of the table. , The support means is fixed to the base side.
Fixed side fixed cylinder tube and urging means
It is urged upward and at the same time resists the urging force of the urging means.
Attached to the cylinder tube so that
The movable side piston rod and the fixed side cylinder tube.
The movable side piston rod to the desired position
It consists of a gas damper consisting of a fastener to be fixed,
Located above the lower end of the fixed side cylinder tube
The fixed side cylinder
Place the lower flange of the Dar tube on the upper surface of the base.
Place a reinforcement member that has almost the same outer shape as this flange.
The reinforcing member and the flange are brought into contact with the lower surface of the base.
Was connected and fixed via a stopper penetrating the base to form a moving table. By using the space formed below the table as a storage space for heavy objects such as a projector as described above, it is possible to put something other than heavy objects on the upper surface of the table or use it as a table. And the movable side with respect to the fixed side cylinder tube
By adjusting the vertical position of the piston rod , the height of the table can be freely changed. When the projector, which is an example of the heavy object, is mounted on the mounting part and used, as described above, the fixed cylinder tube is used.
By arranging the movable side piston rod at an arbitrary vertical position with respect to the tube , the image from the projector can be reliably displayed on the screen without changing its vertical position. Further, by placing a heavy object on the lower portion of the table, the table serves as a cover member for the heavy object, and it is possible to prevent the heavy object from coming into contact with another object. Also, the weight and weight of the table
Lower part of the fixed side cylinder tube where the weight of the object acts
The flange of the can be securely received on the upper surface of the base.
As well as contacting the flange with the bottom surface of the base.
Connect the stiffened reinforcing member with a stopper that penetrates the base.
By doing so, it is possible to strengthen the base without rattling.
Not only can the flange be attached, but its
The shape retention strength of the base at the part can be increased.
Also, the lower end surface of the fixed side cylinder tube is reinforced with a reinforcing member.
The reinforcement member so that it can be received by the upper surface of the
By acting on the fixed side cylinder tube
Support the weight by distributing it to two places, the base and the reinforcing member.
You can

The position holding means comprises a grounding body provided on the lower surface of the base so as to be movable up and down, and the position holding means is projected below the lower end of the moving means and grounded on the floor surface. The posture is freely changeable between a posture and a retracted posture in which the base is movable by retracting above the lower end of the moving means. In order to disable the movement of the moving table, the grounding body is brought into contact with the floor surface by projecting the grounding body downward so that part or all of the moving means is positioned above the floor surface. The moving table can be held at that position by utilizing the frictional resistance with the floor surface.
The number of the grounding bodies may be one, but the larger the number, the greater the position holding force.

[0007]

[0008]

A movable-side piston that constitutes the gas damper
Make the upper end of the ton rod larger in diameter than the piston rod.
A box-shaped member that is open upward and has a substantially rectangular shape in plan view
Fixed in the state of abutting almost the center of the bottom plate of
Integrated with the cover member fixed to the bottom of the table
The box-shaped part is attached to a horizontal plate part fixed to the lower surface of the table.
Fix the upper end of the material, and from the two positions of the cover member to the front and rear
Suspension that suspends the above-mentioned placement part on the extension part that extends in the direction
The member is attached. By fixing to the lower surface of the table via the box-shaped member having a diameter larger than that of the piston rod as described above, the load applied to the piston rod can be stably and reliably received by the box-shaped member having a large diameter . Teeth may, just equip the extending portion in the cover member, it can be utilized as a support member for hanging the hanging member.

By forming the moving means by the casters whose direction can be changed, not only the table can be moved but also the direction of the table can be easily changed.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows a moving table 2 on which a projector 1 used for illuminating and displaying an image on a screen is mounted. This moving table 2
As shown in FIGS. 1 and 6, is a caster 3 which is rotatable (movable) around a vertical axis X as a moving means at the bottom.
5 and a grounding body 4 as position holding means for disabling movement by the casters 3
A table 7 that is vertically movable via a gas damper 6 as a supporting means that projects upward from the base 5, and the table 7 for mounting and supporting the projector 1 at a position below the table 7. And a mounting portion 8 suspended and supported on the lower surface of 7. Therefore, it is possible to change the direction of the moving table 2 configured as described above,
By pushing and pulling the screen, it is possible to easily and quickly change the screen to an optimum posture and position. By using a caster (general-purpose) capable of running as the moving means, there is an advantage that the direction (posture) of the moving table 2 can be easily and quickly changed, but some or all casters cannot run. May be Also, instead of casters,
You may comprise from the spherical body rotatably supported by the base 5, a rotary body, etc. Further, the number of casters is preferably four in comparison with three in terms of stability, but may be three.
Also, by making all the parts that come in contact with the floor surface rotatable, there is the advantage that it can be moved with a small operating force. For example, it is a fixed spherical body that has a low frictional resistance with the floor surface. However, the specific structure of the moving means can be freely changed.

The base 5 is made of wood, but may be made of metal or the like in addition to synthetic resin having the same strength. Further, the base 5 is plate-shaped having a flat upper surface 5a and is formed in a substantially boat shape in a plan view, and has a size larger than that of the table 7 in order to enhance stability. An object can be placed by constructing the base 5 with a plate whose upper surface 5a is flat. However, the base 5 is made of metal and has a mounting portion to which the caster 3 is mounted. The base 5 may be configured by bending a rectangular or circular hollow frame into a ring shape, and the specific configuration of the base 5 can be freely changed.

The gas damper 6 is a fixed side cylinder tube 6A as a fixed portion fixed to the base 5 side.
And a movable piston rod 6B that is vertically movable in the fixed cylinder tube 6A and that is urged upward by an injected gas (for example, nitrogen gas).
It comprises a rotary fastener 6C which constitutes a stopper portion for fixing the movable piston rod 6B to the fixed cylinder tube 6A at an arbitrary vertical position. Therefore, when the table 7 is moved up and down while the projector 1, which is a heavy object, is placed, the table 7 can be moved at a low speed, which facilitates fine adjustment of the height change as well as the heavy object. It is possible to avoid the trouble that the weight of the table 7 lowers the table 7 to the lowermost end violently, and the impact at that time causes a problem in the projector 1 or disconnects the cable connected to the projector. . It is optimal to use the gas damper 6 to make the moving speed as low as possible, but a spring or the like may be used to reduce the moving speed. Here, the gas damper 6
Although the case where only one is provided is shown, it may be configured such that the vertical movement can be performed more stably by providing two or more (a plurality of).

The mounting structure of the lower end of the gas damper 6 will be described. As shown in FIGS. 2 and 3, the fixed cylinder tube 6 constituting the gas damper 6 is described.
A donut-shaped flange provided with an opening through which the cylinder tube 6A can penetrate at an outer peripheral portion located slightly above the lower end of A, that is, an outer peripheral portion at which the distance from the lower end is substantially equal to the plate thickness of the base 5. The portion 9 is fixed by welding or the like, and the lower end of the cylinder tube 6A is formed on the rear side of the base 5 and at a substantially central position in the left-right direction.
And an annular recess 5B in which the flange portion 9 is formed on the upper surface of the base 5 (the advantage is that the upper surface of the flange portion 9 and the upper surface of the base 5 are flush with each other, but it is not necessary). ) And support it. Then, a doughnut-shaped reinforcing member 10 having substantially the same shape as and substantially the same size as the flange portion 9 is arranged directly below the flange portion 9 while being in contact with the lower surface of the base 5. , A plurality of through holes 9A formed in the flange portion 9, a through hole 5C formed at a predetermined position of the base 5 corresponding thereto, and a through hole 10A formed at a predetermined position of the reinforcing member 10 corresponding thereto (in this order) ( (Or vice versa), a bolt 11 as a stopper is inserted, and a nut 12 is screwed onto the lower end of the bolt 11 protruding downward from the reinforcing member 10, so that the flange portion 9 and the reinforcing member 10 are joined together.
It is connected and fixed by sandwiching. The lower end of the bolt 11 is directly reinforced by forming the thickness of the reinforcing member 10 to be thicker than that shown in the drawing so that the internal thread portion can be formed on the inner surface of the through hole 10A formed in the reinforcing member 10. Alternatively, the member 10 may be screwed and fixed. Further, instead of the bolt, a rod-shaped body may be penetrated and the upper and lower ends of the rod-shaped body may be fixed to the flange portion 9 and the reinforcing member 10 by welding or the like.

As shown in FIGS. 2, 4 and 5, the upper end of the piston rod 6B is an upwardly open type having a diameter larger than that of the piston rod 6B and is substantially rectangular in plan view (circular, elliptical or triangular). Any shape such as a polygonal shape including a shape may be used.) The metal box-shaped member 13 is fixed by welding or the like in contact with almost the center of the bottom plate 13A. Then, the upper end of the box-shaped member 13 is set to 9
Four outer peripheral edge portions 13B formed by bending at 0 degrees are integrated with a cover member 14 described later by welding or the like, and are attached to a horizontal plate portion 15 fixed to a rear lower surface of the table 7 with screws B1.
It is fixed by. The box-shaped member 13 is a mounting member for mounting the piston rod 6B on the table 6, and the shape and the fixing means to the box-shaped member 13 are not limited to those shown in the drawings.

As shown in FIGS. 2, 4 and 5, almost all of the box-shaped member 13 (may be all or a part).
A cover member 14 formed in a substantially trapezoidal shape in plan view for covering so as not to be seen from the horizontal direction is fixed to the lower surface of the table 7 by a bolt B2. And
A metal horizontal plate portion (may be omitted) 15 for covering the opening at the upper end of the cover member 14 is provided.
It is fixed by welding etc. The box-shaped member 13 is composed of a frame member having a rectangular cross-section and an inner hollow (which has an advantage that strength can be increased while reducing weight), but the cross-section may be U-shaped. The specific configuration of the box-shaped member 13 can be freely changed.

As shown in FIGS. 2 to 5, the cover part
A pair of left and right extending portions 16 and 1 are formed by extending a frame member having a rectangular cross-sectional shape in the front-rear direction and a hollow inner portion from two positions of the material 14.
6 is formed, and these extending portions 16 and 16 are connected to the table 7
Is fixed to the lower surface of the with bolts B3 or the like. Then, the mounting portion 8 for mounting the projector 1 on the extending portions 16 and 16 is suspended and supported via a pair of front and rear suspension members 17 and 18. In order to reduce the weight, the mounting part 8 is made of a metal plate material having a large number of holes as shown in FIG. 2, and is also a plate material made of synthetic resin or wood having the same strength. May be. Further, the suspending member 17 located on the front side is formed by bending a metal rod-shaped member, and includes a lower support portion 17A extending in the left-right direction that abuts and supports the lower surface of the mounting portion 8, and A vertical portion 17 that is bent 90 degrees upward from both left and right ends of the lower support portion 17A.
B and 17B, and horizontal portions 17C and 17C that are bent 90 degrees from these vertical portions 17B and 17B and extend inward in the left-right direction, and have their upper ends in contact with the lower surfaces of the extending portions 16 and 16. Inclined portions 17D and 17D extending rearward and obliquely upward from the inner end portions of the horizontal portions 17C and 17C toward the through holes 16A and 16A formed inside the extending portions 16 and 16, and the inclined portions 17D and 17D. Is bent so as to extend from the left to the right in the left-right direction, and the through holes 16A, 16A have a collar 18K (may be omitted).
It is composed of insertion parts 17E and 17E which are inserted through. Similarly, the hanging member 18 located on the rear side is also formed by bending a metal rod-shaped member, and includes a lower support portion 18A extending in the left-right direction that abuts and supports the lower surface of the placing portion 8, Vertical portions 18B and 18B that are bent 90 degrees upward from both left and right ends of the lower support portion 18A,
The vertical portions 18B, 18B are bent at 90 degrees and extend inward in the left-right direction, and the upper end of the extension portion 1 is formed.
Horizontal portions 18C, 1 that come into contact with the lower surfaces of 6, 16
8C and through holes 16B, 1 formed inside the extending portions 16, 16 from the inner ends of the horizontal portions 18C, 18C.
6B, inclined portions 18D, 18 extending obliquely upward and forward
D, bent from the inclined portions 18D, 18D so as to extend outward in the left-right direction, and the through hole 16
B and 16B are provided with insertion portions 18E and 18E which are inserted via a collar 18K (which may be omitted). Even with the rod-shaped hanging members 17 and 18 that can be reduced in weight in this way, by devising the shape, the placing portion 8 is configured so as not to move in the left-right direction and the front-back direction. be able to. That is, the mounting portion 8
That the slanted parts 17D, 17D, 1
8D, 18D and the inner surfaces of the extending portions 16, 16 can be prevented from contacting each other, and the mounting member 8 can be prevented from moving forward by the front horizontal portions 17C, 17C and the extending portions 16, 16.
Of the horizontal portion 18C, 18C on the rear side and the extension portion 1 to prevent the mounting portion 8 from moving rearward.
It can be prevented by contact with the lower surface of 6, 16.

As shown in FIG. 3, FIG. 4, FIG. 6 and FIG. 7, the grounding body 4 has front and left and right end portions on the lower surface of the base 5.
That is, the pair of left and right casters 3, 3 located on the front side
By arranging them at two positions located on the outer side in the left-right direction and on the front side, respectively, it is possible to more stably hold the position of the moving table with a small number, but the number and arrangement position are It is not limited to those shown in the figure. Each of the grounding bodies 4 is a disc-shaped fixing portion 4A made of a synthetic resin (preferably rubber or one having a large friction coefficient) fixed to the lower surface of the base 5 with screws or the like.
The fixing portion 4A is provided with a shaft 4C having a female screw portion (not shown) formed therein and a male screw portion that can be screwed in, and has a disc-shaped synthetic resin (a plurality of protrusions 4a for grounding formed on the lower surface). Moving part 4 made of rubber or a material with a large friction coefficient)
B, and is movable up and down with respect to the base 5 by rotating the movable portion 4B. Therefore, as shown in FIG. 7, by rotating the movable portion 4B to one side, the caster 3 can be positioned below the lower end of the caster 3 to be in a position-holding posture in which it is in contact with the floor surface.
Further, by rotating the movable portion 4B in the opposite direction to the above, the caster 3 can be retracted to a position higher than the lower end of the caster 3 so that the movable table can be moved. By arranging the grounding body 4 to be rotatable, it is possible to take a position holding posture with a small operation force, and it is possible to keep the position holding posture unless the grounding body 4 is rotated, which is highly reliable. However, for example, in addition to the slide type in which the caster 3 can be positioned below the lower end of the caster 3 by sliding it forward using an inclined surface, the slide type can be vertically slid, and The caster may be provided with a friction brake mechanism that prevents rotation of the rotating body, and the grounding body 4 may have any specific configuration.

As shown in FIG. 8, the reinforcing member 10 is formed in a disk shape having no hole at the center, so that not only the upper surface of the base 5 but also the lower end of the gas damper 6 is positioned on the upper surface of the reinforcing member 10. The gas damper 6 can be attached to the base 5 more firmly.

[0020]

According to the first aspect of the present invention, the space formed under the table is used as a storage space for heavy objects such as a projector, so that an object other than heavy objects can be placed on the upper surface of the table, It is possible to provide a convenient moving table that can be used as a table and can exert its original function. Then, the movable piston with respect to the fixed-side cylinder tube
By adjusting the vertical position of the rod , you can freely change the height of the table, not only can you adjust the height of the table according to your physique and taste,
When the projector is provided below the table as described above, there is an advantage that the projector can be quickly and easily positioned at the optimum height with respect to the screen without changing the vertical position of the screen. or,
By placing a heavy object on the lower part of the table, the table serves as a cover member for the heavy object, and it is possible to prevent the heavy object from contacting another object at the table.
Particularly in an expensive projector or the like, troubles such as scratches can be prevented, and the moving table can be optimal in terms of use. Also,
Fixed cylinder on which the weight of the bull and the weight of the heavy object act
-Securely receive the lower flange of the tube on the upper surface of the base.
Not only can it be stopped, but the flange and base
For the stopper that penetrates the base with the reinforcing member that is in contact with the lower surface
By connecting more, there is no backlash to the base
The flange part can be firmly attached in this state
Instead of sandwiching the base with the flange and the reinforcing member
To improve the shape retention strength of the base in that part.
The movable table that can be pulled up and is advantageous in durability
Can be configured into Also, the fixed side cylinder
The lower end surface of the tube can be received by the upper surface of the reinforcement member.
If the reinforcing member is configured so that
The weight that acts on the cable is distributed to the base and the reinforcing member in two places.
It can be supported by making it more advantageous in durability
become.

According to the second aspect of the present invention, in order to disable the movement of the moving table, the grounding body is projected downward without raising the moving table, and a part or all of the moving means is moved from the floor. The moving table can be held at that position by utilizing the frictional resistance between the grounding body and the floor surface simply by positioning it above, and it has excellent operability and, when the moving means is a caster, rotation of the caster. It is possible to configure an excellent moving table that can surely hold the position of the moving table as compared with a body provided with a friction brake.

[0022]

[0023]

According to the invention of claim 3 , by fixing the piston rod to the lower surface of the table via a box-shaped member having a larger diameter than that, the load applied to the piston rod is transferred to the large-diameter box-shaped member . It can be stably and reliably received, and can be configured as a moving table excellent in durability without damage to the piston rod and the mounting portion with the table . Teeth may, just equip the extending portion in the cover member, can be utilized as a support member for hanging the hanging member, it is possible to reduce the unnecessary of special support member, material cost and assembly surface Becomes advantageous.

According to the invention of claim 4 , by configuring the moving means by the casters whose direction can be changed, not only the table can be moved but also the direction of the table can be easily changed, and the handling surface is improved. Be advantageous

[Brief description of drawings]

FIG. 1 is a side view of a moving table.

FIG. 2 is an exploded perspective view of a moving table.

FIG. 3 is a front view of a moving table.

FIG. 4 is a vertical sectional side view of a moving table.

FIG. 5 is a bottom view of the table.

FIG. 6 is a bottom view of the base.

FIG. 7 is a side view of a main part showing a mounting portion of a grounding body.

FIG. 8 is a vertical cross-sectional view of a main part to which a reinforcing member having another shape is attached.

[Explanation of symbols]

1 Projector 2 Moving table 3 casters (transportation means) 4 Grounding body (position holding means) 4A fixed part 4B movable part 5 base 5A through hole 5B recess 5C through hole 6 Gas damper (supporting means) 6A Fixed side cylinder tube (fixed part) 6B Movable piston rod (movable part) 6C stop 7 table 8 Mounting part 9 Flange part 9A Through hole 10 Reinforcing member 10A through hole 10B upper surface 11 Volts 12 nuts 13 box-shaped members 13A Bottom plate portion 13B Outer peripheral edge portion 14 Cover member 15 Horizontal plate part 16 extension parts 16A, 16B through holes 17,18 Hanging member 17A, 18A lower support member 17B, 18B vertical section 17C, 18C horizontal part 17D, 18D inclined part 17E, 18E insertion part 18K color X vertical axis

─────────────────────────────────────────────────── ─── Continued Front Page (56) References JP-A-8-117046 (JP, A) JP-A-10-211029 (JP, A) JP-A-63-117335 (JP, A) JP-A-2000-139573 (JP, A) JP 2000-102432 (JP, A) Actual Kaihei 1-121438 (JP, U) (58) Fields investigated (Int.Cl. ⁷ , DB name) A47B 37/02 A47B 9/10 A47B 13/00 A47B 37/00 505 A47B 91/00-91/16

Claims (4)

(57) [Claims] 1. A base provided with a moving means at a lower part thereof and a position holding means for disabling movement by the moving means, and a support provided through a supporting means projecting upward from the base. And a mounting portion suspended and supported from the table for supporting and supporting a heavy object at a lower portion of the table, and the supporting means is provided on the base side.
It is fixed by the fixed side cylinder tube and the biasing means.
Is urged upwards and resists the urging force of the urging means.
Mounted on the cylinder tube so that it can move downward.
The movable side piston rod and the fixed side cylinder rod.
Move the movable side piston rod to the desired vertical position
It consists of a gas damper consisting of a fastener fixed with
Located above the lower end of the fixed cylinder tube
A flange is provided on the outer peripheral part of the
The lower flange of the lower tube on top of the base.
Reinforcement member that is placed and that has approximately the same outer shape as this flange
Abutting on the lower surface of the base, these reinforcing members and flanges
Do not connect and fix and via a stopper that penetrates the base.
Moving table that. 2. The position holding means is composed of a grounding body provided on the lower surface of the base so as to be vertically movable, and the grounding body is projected below the lower end of the moving means to be grounded on the floor surface. 2. The movable table according to claim 1, wherein the movable table is configured so that the position can be changed between a position-holding posture and a retracting posture in which the base is movable by retracting above the lower end of the moving means. 3. A movable-side piston that constitutes the gas damper.
Make the upper end of the ton rod larger in diameter than the piston rod.
A box-shaped member that is open upward and has a substantially rectangular shape in plan view
Fixed in the state of abutting almost the center of the bottom plate of
Integrated with the cover member fixed to the bottom of the table
The box-shaped part is attached to a horizontal plate part fixed to the lower surface of the table.
Fix the upper end of the material, and from the two positions of the cover member to the front and rear
Suspension that suspends the above-mentioned placement part on the extension part that extends in the direction
The moving table according to claim 1, wherein a member is attached . 4. A cassette in which the moving means can change its direction.
The moving table according to claim 1, which comprises a table.