JP2002272539A - Movable table - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a movable table by which the upper surface of the table is used and the contact of a heavy object such as a projector and other objects is evaded. SOLUTION: This movable table is provided with a base 5 having a moving means 3 at a lower part and having a position holding means, the table 7 supported through a supporting means 6 projected upwards from the base 5 and a mounting part 8 suspended and supported from the table 7 so as to mount and support the heavy object 1 at the lower part of the table 7. The supporting means 6 is constituted of a fixed part 6A fixed to a base side, a movable part 6B attached to the fixed part 6A so as to be energized upwards by an energizing means and to be moved downwards against the energizing force of the energizing means and a stopper part 6C for fixing the movable part 6B to the fixed part 6A at an optional vertical position.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

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

[0002]

2. Description of the Related Art Generally, the above-mentioned moving table comprises a base provided with casters at a lower portion thereof, and a table supported above the base via a support member. The projector, which is an example of a heavy object, is placed on the upper surface of the moving table configured as described above and can be easily moved.

[0003]

In the configuration in which the projector is mounted on the upper surface of the table as described above, since the upper surface of the table is almost completely filled with the projector, it cannot be used as a table. He could not put anything else.
In addition, troubles such as bringing another object into contact with the projector placed on the upper surface of the table may occur.

In view of the above situation, the present invention seeks to solve the problem by using the upper surface of a table.
Another object of the present invention is to provide a moving table that can prevent another object from contacting a heavy object such as a projector.

[0005]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention provides a base provided with a moving means at a lower portion and a position holding means for disabling movement by the moving means. A table supported via supporting means projecting upward from the base, and a mounting portion suspended from the table for mounting and supporting a heavy object below the table. A fixing unit fixed to the base, and a support urged upward by the urging means and attached to the fixing part movably downward against the urging force of the urging means. The movable table is constituted by the movable part thus provided and a stopper part for fixing the movable part at an arbitrary vertical position with respect to the fixed part. By using the space formed below the table as a storage space for heavy objects such as projectors as described above, anything other than heavy objects can be placed on the upper surface of the table or used as a table. The height of the table can be freely changed by adjusting the vertical position of the movable part with respect to the fixed part. When a projector, which is an example of the heavy object, is used by being mounted on a mounting portion, the movable portion is positioned at an arbitrary vertical position with respect to the fixed portion as described above, so that the The image can be reliably projected on the screen without changing its vertical position. In addition, by placing a heavy object under the table, the table serves as a cover member for the heavy object, and the table can prevent the heavy object from coming into contact with another object.

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 grounding body protrudes below the lower end of the moving means to hold the position on the floor surface. The base is configured to be 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 projected downward and a part or all of the moving means is positioned above the floor surface, so that the grounding body is in contact with the floor surface. The moving table can be held at that position using the frictional resistance with the floor surface.
The number of the grounding members may be one, but the greater the number, the greater the position holding force.

When the supporting means is constituted by a gas damper, the speed at which the table is moved up and down can be reduced, so that the table on which the heavy object is placed moves up and down sharply in comparison with the case where the table is moved up and down rapidly. It will be advantageous.

A flange portion is provided at an outer peripheral portion located above a lower end of the fixed cylinder tube constituting the gas damper, and a lower flange portion of the fixed cylinder tube is mounted on the upper surface of the base. A reinforcing member having substantially the same outer shape as the flange is brought into contact with the lower surface of the base, and the reinforcing member and the flange are connected and fixed via a stopper penetrating the base. As described above, not only can the lower flange portion of the fixed side cylinder tube on which the weight of the table and the weight of the load acts can be reliably received on the upper surface of the base, but also the lower flange can be brought into contact with the lower surface of the base. By connecting the reinforcing member to the base with a stopper that penetrates the base, not only can the flange be firmly attached to the base without play, but also the base can be maintained at that part. Shape strength can be increased. Also, by configuring the reinforcing member so that the lower end surface of the fixed side cylinder tube can be received on the upper surface of the reinforcing member, the weight acting on the fixed side cylinder tube is distributed to two places of the base and the reinforcing member. Can be supported.

At the upper end of the movable piston rod constituting the gas damper, a mounting portion having a diameter larger than that of the piston rod is fixed to the lower surface of the table, and part or all of the mounting portion is covered in a horizontal direction. A cover member is attached to the lower surface of the table, and a suspending member for suspending the placing portion is attached to an extension from which the cover member extends. By fixing the piston rod to the lower surface of the table via the mounting portion having a larger diameter than the piston rod as described above, the load applied to the piston rod can be stably and reliably received by the large-diameter mounting portion. By covering a part or the entirety of such a large-diameter mounting portion with a cover member, it is possible to obtain a highly completed product.
Moreover, only by providing the cover member with an extending portion,
It can be used as a support member for suspending the suspension member.

By constituting the moving means with 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]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows a moving table 2 on which a projector 1 used for projecting and projecting an image on a screen is mounted. This moving table 2
As shown in FIG. 1 and FIG. 6, a caster 3 rotatable (movable) around a vertical axis X as a moving means is provided at a lower portion.
And a grounding body 4 as a position holding means for disabling movement by the casters 3.
A table 7 movably supported up and down via a gas damper 6 as a support means projecting upward from the base 5; and a table for mounting and supporting the projector 1 below the table 7. And a mounting portion 8 suspended from the lower surface of the mounting member 7. Therefore, the direction of the moving table 2 configured as described above can be changed,
By pushing and pulling, the screen can be easily and quickly changed to an optimum posture and position with respect to the screen. By using a runnable caster (general-purpose type) as the moving means, there is an advantage that the direction (posture) of the moving table 2 can be easily and quickly changed, but a part or all of the casters cannot run. It may be. Also, instead of casters,
It may be composed of a spherical body or a rotating body rotatably supported on the base 5. Further, the number of the casters is more preferably four than three in terms of stability, but may be three.
Also, by making all the portions that are in contact with the floor surface rotatable, there is an advantage that they can be moved with a small operation force. However, for example, a fixed spherical body having little frictional resistance with the floor surface is used. The specific configuration of the moving means may 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. The base 5 is formed in a plate shape having a flat upper surface 5a and substantially in a boat shape in plan view, and is configured to be larger than the table 7 in order to enhance stability. The base 5 is formed of a plate having an upper surface 5a that is flat, so that an object can be placed thereon. However, the base 5 is made of a metal having a mounting portion to which the caster 3 is mounted, and has a cross section. 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 has a fixed cylinder tube 6A as a fixed portion fixed to the base 5 side.
A movable-side piston rod 6B that can move up and down into the fixed-side cylinder tube 6A and is urged upward by an injected gas (eg, nitrogen gas or the like);
The movable side piston rod 6B is fixed to the fixed side cylinder tube 6A at an arbitrary vertical position. Therefore, when the table 7 is moved up and down in a state where the projector 1 which is a heavy object is placed, the moving speed can be set at a low speed, and not only the fine adjustment of the height change can be easily performed, but also the weight of the heavy object can be easily adjusted. With the weight, the table 7 is vigorously lowered to the lowermost end, and it is possible to avoid the occurrence of troubles such as a problem occurring in the projector 1 due to an impact at that time or a disconnection of a cable connected to the projector. . The use of the gas damper 6 is most suitable for making the moving speed as low as possible. However, the moving speed may be made low by using a spring or the like. Here, 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).

The mounting structure of the lower end of the gas damper 6 will be described. As shown in FIGS. 2 and 3, a fixed cylinder tube 6 constituting the gas damper 6 is shown.
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, at an outer peripheral portion whose 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 at the rear side of the base 5 and at a substantially central position in the left-right direction through hole 5A.
And an annular concave portion 5B (the upper surface of the flange portion 9 and the upper surface of the base 5 are formed on the same surface). ). Then, a donut-shaped reinforcing member 10 having substantially the same shape and substantially the same size as the flange portion 9 is arranged in a state of being in contact with the lower surface of the base 5 in a state of being located directly below the flange portion 9. A plurality of through holes 9A formed in the flange portion 9, a through hole 5C formed in a predetermined location of the base 5 corresponding to the plurality of through holes 9A, and a through hole 10A formed in a predetermined location of the reinforcing member 10 corresponding thereto. (Or vice versa), a bolt 11 is inserted as a stopper, and a nut 12 is screwed into a 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 connected to the base 5.
Is fixedly connected. The lower end of the bolt 11 is directly reinforced by forming the reinforcing member 10 thicker than that shown in the drawing so that a female screw portion can be formed on the inner surface of the through hole 10A formed in the reinforcing member 10. You may make it screw into the member 10 and fix it. Instead of the bolts, 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 formed in an upwardly open type having a larger diameter than 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 fixed by welding or the like in a state in which the metal box-shaped member 13 is in contact with a substantially central portion of the bottom plate portion 13A. Then, the upper end of the box-shaped member 13 is set at 9
The four outer peripheral edges 13B formed by being bent by 0 degrees are integrated with a cover member 14 to be described later by welding or the like, and are screwed onto a horizontal plate portion 15 fixed to the lower surface on the rear side of the table 7 by screws B1.
It is fixed by. The box-shaped member 13 is used as an attachment member for attaching the piston rod 6B to 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, substantially all of the box-shaped member 13 (may be all or part).
A cover member 14, which is formed in a substantially trapezoidal shape in a plan view, so as not to be seen from the horizontal direction, is fixed to the lower surface of the table 7 with bolts B2. And
A horizontal metal plate 15 (which may be omitted) for covering the opening at the upper end of the cover member 14 is provided.
Is fixed by welding or the like. The box-shaped member 13 is formed of a frame member having a rectangular cross section and a hollow inside (there is an advantage that the strength can be increased while reducing the weight), but the cross section may be a U-shape. The specific configuration of the box-shaped member 13 can be freely changed.

As shown in FIG. 2 to FIG.
3, a pair of left and right extending portions 16 and 16 is formed by extending a hollow frame member having a rectangular cross section in the front-rear direction and forming a pair of left and right extending portions. It is fixed by B3 or the like. The mounting portion 8 on which the projector 1 is mounted on the extending portions 16, 16 is suspended and supported via a pair of front and rear suspension members 17, 18. The mounting portion 8 is made of a metal plate having a large number of holes as shown in FIG. 2 to reduce the weight, and is made of a synthetic resin or wood having the same strength. You may. Further, the hanging member 17 located on the front side is formed by bending a metal rod-shaped member, and includes a lower supporting portion 17A extending in the left-right direction for supporting and supporting the lower surface of the mounting portion 8 described above. Lower support 17
A vertical portion 17B bent upward by 90 degrees from the left and right ends of A,
17B and a horizontal portion 1 which is bent 90 degrees from these vertical portions 17B, 17B, extends inward and leftward, and has an upper end in contact with the lower surfaces of the extending portions 16, 16.
7C, 17C, and through holes 1 formed inside the extending portions 16, 16 from the inner ends of the horizontal portions 17C, 17C.
Inclined portion 17 extending rearward and obliquely upward toward 6A, 16A
D, 17D, and insertion portions 17E, which are bent from these inclined portions 17D, 17D so as to extend outward in the left-right direction, and are inserted into the through holes 16A, 16A via collars 18K (may be omitted). 17E. Similarly, the hanging member 18 located on the rear side is formed by bending a metal rod-shaped member, and a lower supporting portion 18A extending in the left-right direction for supporting and supporting the lower surface of the mounting portion 8; Vertical portions 18B, 18B bent upward by 90 degrees from the left and right ends of the lower support portion 18A;
It is bent 90 degrees from these vertical portions 18B, 18B and extends inward and leftward toward the inside, and the upper end is formed with the extension portion 1.
Horizontal portions 18C, 1 in contact with 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.
Inclined portions 18D, 18 extending diagonally forward and upward toward 6B
D, and are bent so as to extend outward in the left-right direction from the inclined portions 18D, 18D.
B, 16B, which are inserted portions 18E, 18E which are inserted through a collar 18K (may be omitted). Even the rod-shaped hanging members 17 and 18 that can be reduced in weight as described above are configured so that the mounting portion 8 does not move in the left-right direction and the front-rear direction by devising the shape. be able to. That is, the mounting unit 8
Are moved in the left-right direction.
8D, 18D and the inner surfaces of the extending portions 16, 16 can be prevented from coming into contact with each other, and the forward movement of the mounting member 8 can be prevented by the front horizontal portions 17C, 17C and the extending portions 16, 16.
The lower horizontal portions 18C, 18C and the extending portion 1 prevent the mounting portion 8 from moving backward.
The contact can be prevented by contacting the lower surfaces of 6, 6 with the lower surface.

As shown in FIGS. 3, 4, 6 and 7, the grounding body 4 has front left and right ends on the lower surface of the base 5,
In other words, a 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, 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 what is shown in the figure. Each of the grounding members 4 includes a disk-shaped synthetic resin (preferably rubber or a member having a large coefficient of friction) fixed to the lower surface of the base 5 with screws or the like;
The fixed portion 4A is provided with a shaft 4C having a female screw portion (not shown) formed with a screwable male screw portion, and a disk-shaped synthetic resin having a large number of convex portions 4a for grounding formed on the lower surface thereof ( The movable part 4 is preferably rubber or one having a large friction coefficient.
B, and is configured to be vertically movable with respect to the base 5 by rotating the movable part 4B. Therefore, as shown in FIG. 7, by rotating the movable part 4B to one side, the movable part 4B can be positioned lower than the lower end of the caster 3 to be in a position holding posture in contact with the floor surface,
Further, by rotating the movable portion 4B in the opposite direction to the above, the movable portion 4B is retracted above the lower end of the caster 3 so that the movable table can be set in a retracted posture in which the movable table can be moved. By forming the grounding body 4 in a rotary manner, it is possible to maintain the position holding posture with a small operation force, and to maintain the position holding posture as long as the grounding body 4 is not rotated. There are, for example, a slide type that can be positioned below the lower end of the caster 3 by sliding forward using an inclined surface, and a vertical type that slides up and down. The caster may be provided with a friction brake mechanism for preventing rotation of the rotating body, and the specific configuration of the grounding body 4 may be any 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 placed on the upper surface of the reinforcing member 10. There is an advantage that the gas damper 6 can be more firmly attached to the base 5.

[0020]

According to the first aspect of the present invention, a space formed below the table is used as a storage space for a heavy object such as a projector, so that anything other than a heavy object is 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 exhibit the function of the original table. And, by adjusting the vertical position of the movable part with respect to the fixed part, the height of the table can be freely changed, and not only can the height of the table be adjusted according to the physique and preference, 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. In addition, by placing a heavy object on the lower part of the table, the table becomes a cover member for the heavy object, and it is possible to prevent the other object from coming into contact with the heavy object by the table. In such cases, the occurrence of troubles such as damage can be prevented, and an optimal moving table can be obtained in terms of use.

According to the second aspect of the present invention, in order to disable the movement of the moving table, the grounding body is protruded downward without lifting the moving table, and a part or all of the moving means is moved off the floor. Just by being located above, the moving table can be held at that position by utilizing the frictional resistance between the grounding body and the floor surface, which is excellent in operability and, when the moving means is a caster, rotates the caster. An excellent moving table that can surely maintain the position of the moving table as compared with the one provided with a friction brake on the body can be configured.

According to the third aspect of the present invention, when the support means is constituted by a gas damper, the speed at which the table is moved up and down can be reduced, and the table on which the heavy object is placed moves up and down rapidly. Not only is it advantageous in terms of handling than in the case of performing a fine adjustment of the height of the table, it can be performed accurately and quickly without overrun or the like.

According to the fourth aspect of the present invention, not only can the lower flange portion of the fixed cylinder tube on which the weight of the table and the weight of the load acts can be reliably received on the upper surface of the base but also the flange portion and By connecting the reinforcing member in contact with the lower surface of the base with a stopper penetrating the base, not only can the flange be firmly attached to the base without play, but also the flange By sandwiching the base between the portion and the reinforcing member, the shape retention strength of the base at that portion can be increased, and a moving table that is advantageous in durability can be configured. Further, if the reinforcing member is configured so that the lower end surface of the fixed cylinder tube can be received by the upper surface of the reinforcing member, the weight acting on the fixed cylinder tube is dispersed to two places of the base and the reinforcing member. It can be supported, which is more advantageous in durability.

According to the fifth aspect of the present invention, by fixing the piston rod to the lower surface of the table via the mounting portion having a larger diameter, the load applied to the piston rod can be stabilized by the large-diameter mounting portion. The moving table can be reliably and reliably received, and can be configured as a moving table excellent in durability without being damaged at the mounting portion with the table as well as the piston rod. By covering a part or the entirety of such a large-diameter mounting portion with a cover member, a highly-completed product can be obtained, and a moving table having a product strength capable of enhancing sales promotion can be provided. can do. In addition, only by providing the cover member with the extending portion, it can be used as a support member for suspending the suspension member, and a special support member can be eliminated, thereby reducing material cost and assembly. It will be advantageous.

According to the sixth aspect of the present invention, the moving means is constituted by casters whose direction can be changed, so that not only the table can be moved but also the direction of the table can be easily changed. It will be advantageous.

[Brief description of the 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 the 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 part of the grounding body.

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

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Projector 2 Moving table 3 Caster (moving means) 4 Grounding body (position holding means) 4A Fixed part 4B Movable part 5 Base 5A Through hole 5B Depression 5C Through hole 6 Gas damper (support means) 6A Fixed cylinder tube (fixed) 6B Movable piston rod (movable part) 6C Stopper 7 Table 8 Placement part 9 Flange part 9A Through hole 10 Reinforcement member 10A Through hole 10B Top surface 11 Bolt 12 Nut 13 Box-shaped member 13A Bottom plate portion 13B Peripheral edge 14 Cover member 15 Horizontal plate portion 16 Extension portion 16A, 16B Through hole 17, 18 Hanging member 17A, 18A Lower support member 17B, 18B Vertical portion 17C, 18C Horizontal portion 17D, 18D Inclined portion 17E, 18E Insertion portion 18K Color X vertical axis

Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat II (Reference) B66F 7/28 B66F 7/28 A

Claims (6)

[Claims] 1. A base provided with a moving means at a lower portion and a position holding means for disabling movement by the moving means, and supported via a supporting means protruding upward from the base. And a mounting portion suspended from the table for mounting and supporting a heavy object below the table, wherein the supporting means is fixed to the base side. A movable portion attached to the fixed portion so as to be urged upward by the biasing means and movable downward against the biasing force of the biasing device; and the movable portion with respect to the fixed portion. A moving table consisting of a stopper that is fixed at any vertical position. 2. The apparatus according to claim 1, wherein the position holding means comprises a grounding member provided on the lower surface of the base so as to be movable up and down, and the grounding member is projected below the lower end of the moving means and grounds on the floor surface. 2. The moving table according to claim 1, wherein the moving table is configured to be capable of changing its posture between a position holding posture and a retracting posture in which the base is movable by retracting above a lower end of the moving means. 3. The moving table according to claim 1, wherein said support means is a gas damper. 4. A flange portion is provided at an outer peripheral portion located above a lower end of a fixed cylinder tube constituting the gas damper, and a lower flange portion of the fixed cylinder tube is mounted on an upper surface of the base. 2. A reinforcing member having substantially the same outer shape as the flange is brought into contact with the lower surface of the base, and the reinforcing member and the flange are connected and fixed via a stopper penetrating the base. Or the moving table according to 3. 5. A mounting portion having a larger diameter than the piston rod is fixed to an upper end of a movable piston rod constituting the gas damper on a lower surface of the table, and a part or all of the mounting portion is horizontally moved. The moving table according to claim 1 or 3, wherein a cover member for covering the cover member is attached to a lower surface of the table, and a suspending member for suspending the placing portion is attached to an extending portion where the cover member extends. 6. The moving table according to claim 1, wherein said moving means comprises a caster whose direction can be changed.