JPH10245976A - Working table - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a working table which can be installed and removed quickly owing to incorporation of as well the folding type structure as the expansion/ contraction type structure, has merits such as easy to make maintenance owing to its capability of being deformed in a compact shape at normal time, allows a reduction of the total weight, and excels in the handling easiness. SOLUTION: A working table 1 is equipped with a lower frame 2 and upper frame 3, which are coupled together slidably, and a scaffold plate 4. The lower frame 2 includes column members 5A-5D, lower horizontal muntin members 6A-6D, and upper horizontal muntin members 7A-7D, and the upper frame 3 is equipped with four column members 8A-8D and four upper horizontal muntin members 9A-9D. The lower horizontal muntin members 6A and 6C are accomplished in a flex structure while the upper horizontal muntin members 7A and 7C are embodied in a swinging structure, and the upper horizontal muntin members 9A and 9C are formed in the swinging structure.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a workbench serving as a scaffold for use in, for example, interior work in a room, work on a high ceiling or a wall of a construction site, and more particularly, to a folding structure. The present invention relates to a work table that employs a telescopic structure.

[0002]

2. Description of the Related Art Conventionally, when performing interior decoration of a room of a building, a workbench serving as a scaffold is installed in the room, and an operator rides on the workbench, puts wallpaper, decorates the interior, or the like. To do. Conventional worktables are often of the assembly type, and carry multiple members into the room,
In a room, these components are assembled to form a work table having a configuration in which a base plate is placed on the upper surface of a frame member constructed from a plurality of horizontal rails, vertical rails, and the like. For example, a temporary moving scaffold used in construction work, etc., is made by combining frames made of a combination of a support member and a horizontal member with a gap therebetween, and connecting a strut or a scaffold plate to these facing frame members facing each other. It is a configuration that is assembled by frame.

[0003] On the other hand, there is also known a worktable configured to be able to expand and contract a frame body in a height direction and a width direction in order to freely change the height and width of a work floor. For example, as such a work table, Japanese Patent Laid-Open No. 8-28
No. 030 discloses a rolling tower in which first frames are opposed to each other with a space therebetween, and one side of the first frames is connected to each other by a horizontal member, and a frame of three sides is surrounded. As a pair,
A second frame, which expands freely in the width direction, with respect to the first frame.
One side of the opposed second frame body is connected by a horizontal member, and the remaining surfaces of the frame body surrounding the three sides are bent to form the first frame body and the second frame body. A third frame and a fourth frame are provided so as to be expandable upwardly with respect to the second frame, and further, a third frame and a fourth frame are provided so as to be expandable upward with respect to the third frame and the fourth frame. The fifth frame and the sixth frame are provided.

[0004]

The work table described above is a temporary work, and it is necessary to quickly install and remove the work table at the start and end of the work. However, the worktable of the assembling type described above requires a troublesome assembling work at the start of the work and a troublesome dismantling work at the end of the work, so that there is a problem that it takes time to install and remove the worktable. In addition, in such a worktable of an assembling type, since it is disassembled into a plurality of members such as a frame, a scaffold, and a brace, it is necessary to store these members individually, and a wide accommodation space is secured. There are also problems, such as the need to perform such tasks, and the need for management.

[0005] On the other hand, in a worktable constructed so that the above-mentioned frame body can be expanded and contracted in the height direction and the width direction, a troublesome assembling work is not required at the start of work and a troublesome dismantling work at the end of work. In order to expand and contract the frame body in the height direction and the width direction, it is necessary to provide a telescopic horizontal member or a telescopic strut. In the prior art, since these are a slide structure of the inner pipe and the outer pipe, However, there is a problem in that the weight is considerably large, heavy labor is required for carrying, and handling is inferior.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and can be quickly installed and removed by employing both a foldable structure and a telescopic structure. In addition, an object of the present invention is to provide a worktable which has advantages such as easy management and the like which can be deformed into a compact shape at all times, can reduce the overall weight, and is excellent in handleability.

[0007]

For this reason, the present invention according to claim 1 is characterized in that four strut members which are arranged in four directions and are spaced apart from each other so as to form a square shape, and a lower portion between adjacent strut members. Four lower cross members each extending and connecting the lower part of the support member, and four upper cross members connecting the upper parts of the support members to each other between upper portions of the adjacent support members And a lower frame body comprising: four pillar members spaced apart from each other to form a square shape; An upper frame body comprising: four upper horizontal rail members interconnecting the upper part; and at least an upper frame member among the upper horizontal rail members of the lower frame body and the upper horizontal rail members of the upper frame body. A scaffold plate of a predetermined area which is mounted on the upper cross member and is detachably connected to the upper cross member. Made is, two lower horizontal crosspiece member which faces the one side of the lower frame part, together with respective both ends are flexibly connected to the inner to the lower of the lower frame,
Each of the lower frame members is provided with a holding means configured to be bent inward at a substantially middle portion in the longitudinal direction and holding the bendable lower cross member in an extended state. One of the two upper cross members is rotatably connected to the upper part of the lower frame, and the other end is detachable from the upper part of the lower frame. Are connected to each other, and two upper cross members facing each other on the same side as the one side of the lower frame of the upper frame, one end thereof is rotatable with respect to the upper portion of the upper frame. And the other end is detachably connected to the upper part of the upper frame, and the four support members of the lower frame and the four pillars of the upper frame are connected to each other.
The first and second support members are connected to each other in a slidable manner, and a fixing means for fixing the first and second support members to each other at a predetermined slide position is provided.

The invention according to claim 2 is characterized in that the lower frame and the upper frame are each formed of a cylindrical member or a substantially L-shaped angle member.

According to a third aspect of the present invention, in the lower frame, a pillar member is connected to one of the lower horizontal rail members adjacent to each other, and the ends of the adjacent lower horizontal rail members are mutually connected. It is characterized by being connected via a hinge.

According to a fourth aspect of the present invention, the two lower cross members facing each other on one side of the lower frame are divided at a substantially middle portion in the longitudinal direction, and the dividing members are fixedly attached to the outer surface side. Characterized in that they are connected via a hinge that is provided.

According to a fifth aspect of the present invention, an engaging lever having a hook portion is rotatably connected to a distal end of the one dividing member, and an engaging lever is connected to a distal end of the other dividing member. There is provided an engagement pin with which the hook portion can be engaged,
The holding means for holding the bendable lower horizontal rail member in an extended state is constituted by an engagement lever and an engagement pin.

According to a sixth aspect of the present invention, one end of each of the two upper cross members opposing one side of the lower frame and the upper frame is fixedly attached to the upper end of the corresponding support member. And the other end is detachably connected to an upper portion of each of the lower frame and the upper frame by a connecting means.

According to a seventh aspect of the present invention, the connecting means includes:
A lock pin device is provided inside the other end of the upper cross member. The lock pin device is slidably supported in the device main body and the device main body. A lock pin that can be inserted into the formed lock hole, and a lever that is fixed to the outer peripheral portion of the lock pin, and that is slidably inserted into a substantially L-shaped groove formed in an end wall of the upper horizontal rail member. And a push spring that elastically urges the lock pin in a direction to normally push the lock pin forward.

The invention according to claim 8 is characterized in that a caster for movement is attached to the bottom of the lower frame.

According to a ninth aspect of the present invention, the fixing means for fixing the two support members to each other at the predetermined slide position comprises a lock pin device built inside the end of the upper horizontal rail member of the lower frame. The lock pin device includes a device main body, a lock pin slidably supported in the device main body, and a tip end of which can be inserted into a lock hole formed in a freely slidable support member side wall of the upper frame. An operating lever slidably inserted into a substantially L-shaped groove formed in an end wall of the upper horizontal rail member, the lever being fixed to an outer peripheral portion of the pin; And a pressing spring that elastically biases in a pressing direction.

According to a tenth aspect of the present invention, a lock hole is provided at each of a plurality of different height positions of each freely slidable support member of the upper frame body, and the height position of the upper frame body with respect to the lower frame body. Is adjusted in a plurality of stages.

According to an eleventh aspect of the present invention, the scaffold plate is
It is configured of a plate member having a predetermined area which is mounted on at least the upper horizontal rail member of the upper frame body and is detachably connected to the upper horizontal rail member of the lower frame body and the upper horizontal rail member of the upper frame body. It is characterized by.

According to a twelfth aspect of the present invention, the scaffold plate comprises:
An adjacent work table is installed in a state of being bridged to an adjacent work table among a plurality of work tables arranged in front, rear, left and right, and engaging both ends of the work table with an upper horizontal rail member of each of the adjacent work tables. It is characterized in that it is used as a workbench connecting plate for connecting each other.

According to a thirteenth aspect of the present invention, a ladder for climbing up to a scaffold used selectively mounted on the upper cross member of the lower frame and the upper cross member of the upper frame is integrated. The ladder is divided into a lower ladder and an upper ladder that is freely slidably assembled inside the lower ladder, and the lower ladder has one of its side back surfaces provided on the front side of the lower frame. The other side is connected to the lower cross member of the lower frame in a state where the work table is expanded, and one side of the upper ladder extended upward with the work table expanded. Is coupled to the upper horizontal rail member of the upper frame.

According to a fourteenth aspect of the present invention, when the workbench is folded, the lower part of the lower ladder is connected to the lower part of the support member to which the lower ladder is not fixed. The work table is maintained in a folded state.

According to a fifteenth aspect of the present invention, there is provided a workbench connecting means for connecting adjacent worktables among a plurality of worktables arranged in front, rear, left and right, wherein one of the adjacent worktables has one of the worktables. An engagement piece having an engagement groove rotatably coupled to the side surface of the support member, and an engagement protrudingly provided on the side surface of the support member of the other work table and engaged with the engagement groove of the engagement piece And a work table connecting means including a pin.

[0022]

Embodiments of the present invention will be described below in detail with reference to the accompanying drawings. 1 to 5,
The work table 1 according to the present invention includes a lower frame 2, an upper frame 3, and a scaffold plate 4. The lower frame 2 includes four support members 5A to 5D spaced apart in four directions so as to form a square shape and adjacent support members 5A, 5B, 5B,
5C, 5C, 5D, 5D, and 5A, four lower cross members 6A to 6D which are respectively inserted between lower portions of the support members 5A to 5D and interconnect the lower portions thereof, and adjacent support members 5A, 5A.
B, 5B, 5C, 5C, 5D, 5D, 5A, respectively, and four upper cross members 7A to 7D which are connected to the upper portions of the support members 5A to 5D, respectively. You.

The upper frame 3 has four support members 8A to 8D spaced apart from each other so as to form a square shape and adjacent support members 8A, 8B, 8B, 8C, 8C, 8D, 8
D, 8A, each of which is extended between the upper portions of the support members 8A.
-8D, four upper cross members 9A-9 connecting the upper parts to each other
D. The two lower cross members 6A and 6C opposed to one side of the lower frame 2 have a bent structure. That is, the two lower cross members 6A and 6C are
Both ends thereof are connected to the lower part of the lower frame 2 so as to be able to bend inwardly, respectively, and are formed so as to be inwardly bendable at a substantially middle part in the longitudinal direction, respectively, and the lower horizontal beam members 6A, 6
Holding means for holding C in an extended state is provided.

The two lower cross members 6B and 6D facing the other side of the lower frame 2 have a fixed structure. Two upper horizontal rail members 7 facing one side of the lower frame 2
A and 7C are of a swing structure. That is, each of the two upper cross members 7A and 7C has one end thereof rotatably connected to the upper portion of the lower frame 2 and the other end of the lower frame 2. It is detachably connected to the upper part.

The two upper cross members 7B and 7D facing the other side of the lower frame 2 have a fixed structure. On the other hand, the two upper cross members 9A and 9C facing the same side of the upper frame 3 as one side of the lower frame 2 have a swing structure. That is, the two upper cross members 9A and 9C are
One end of each is rotatably connected to the upper part of the upper frame 3, and the other end is detachably connected to the upper part of the upper frame 3. Further, the two upper horizontal rail members 9B and 9D opposed to the other side of the upper frame 3 have a fixed structure.

The four support members 5A to 5D of the lower frame 2 and the four support members 8A to 8 of the upper frame 3 are provided.
D are connected to each other so as to be freely slidable with each other, and both support members 5A to 5D, 8A to
A fixing means for fixing the 8Ds is provided. To describe this configuration in detail, the lower frame 2 and the upper frame 3 are each formed of a rectangular tube member having a rectangular cross section. And
In the lower frame 2, the pillar members 5B, 5C, 5A, 5D are connected to the lower horizontal rail members 6B, 6D, and the adjacent lower horizontal rail members 6A, 6B, 6B, 6C, 6C, 6D, 6 are adjacent.
The ends of D and 6A are connected via a hinge 10.

The lower horizontal beam members 6A, 6C are divided at an intermediate portion in the longitudinal direction, and the dividing members 6a, 6b, 6
c and 6d are connected via a hinge 11 fixedly mounted on the outer surface side. Also, one of the dividing members 6a, 6c
An engaging lever 12 having a hook portion is rotatably coupled to the tip of the engaging member, and an engaging pin to which the hook of the engaging lever 12 can be engaged is attached to the tip of the other dividing member 6b, 6d. 1
The holding lever 3 and the engaging pin 13 constitute holding means for holding the bendable lower cross rail members 6A and 6C in an extended state.

Further, the upper cross members 7A, 7A of the lower frame 2
One end of C is rotatably connected to a bracket 14 fixedly attached to the upper ends of the corresponding support members 5B and 5D, and the other end is next to the upper part of the lower frame 2. It is detachably connected by a lock pin device as a connecting means as described above.

The structure of the lock pin device will be described with reference to the end structure of the upper cross member 7C (FIG. 1A) as an example. In FIG. 6, inside the end of the upper cross member 7C,
An apparatus main body 15a, a lock pin 15b slidably supported in the apparatus main body 15a, and a tip end of which can be inserted into a lock hole 16 formed in a side wall of the support member 5C, and fixed to an outer peripheral portion of the lock pin 15b. Lever 15c,
An operating lever 15c slidably inserted into a substantially L-shaped groove 17 formed in an end wall of the upper horizontal rail member 7C.
A lock pin device 15 including a lock spring 15d that elastically urges the lock pin 15b forward in a direction to normally push the lock pin 15b forward is incorporated.

The distal end of the lock pin 15b always protrudes from the end face of the upper horizontal rail member 7C. When the operating lever 15c slides along the groove 17, the lock pin 15b moves forward and backward to lock. After the pin 15b is pressed and retracted against the elastic force of the spring 15d, and its tip is aligned with the lock hole 16, the lock pin 1
By pushing the 5b by the elastic force of the spring 15d, the lock pin 15b is inserted into the lock hole 16, and the upper horizontal rail member 7C is connected to the support member 5C.

After the lock pin 15b is pulled out from the lock hole 16, the operating lever 15c is rotated to the base end side of the groove 17 so that the lock pin 15b is held in a retracted state, The connection between the member 5C and the upper horizontal rail member 7C is released. In addition, a rotation connection part (part of the bracket 14) with respect to the upper part of the lower frame 2 of the two upper cross rail members 7A and 7C opposed to one side of the lower frame 2;
The detachable connecting portion (the lock pin device 15 portion) to the upper portion of the lower frame 2 is set in the left and right opposite directions in the upper horizontal rail members 7A and 7C.

A caster 18 with a stopper for movement is attached to the bottom of the lower frame 2 having such a structure, that is, to the bottom surface of the lower horizontal rails 6B and 6D. On the other hand, in the upper frame 3, one ends of the two upper cross members 9A and 9C are rotatably connected to a bracket 19 fixedly attached to upper ends of the corresponding support members 8A and 8C, and the other end. Is detachably connected to the upper portion of the upper frame 3 by a lock pin device similar to the lock pin device 15 used in the lower frame 2.

It is to be noted that two upper cross members 9A and 9C opposed to one side of the upper frame 3 are pivotally connected to the upper portion of the upper frame 3 (part of the bracket 19). The upper and lower cross rail members 9A and 9C are set in opposite left and right directions with the detachable connecting portion (lock pin device portion) with respect to the upper portion. In addition, the rotational connection portions and the detachable connection portions of the upper horizontal rail members 7A and 7C of the lower frame member 2 and the rotational connection of the upper horizontal rail members 9A and 9C of the upper frame member 3 located on the same side. The part and the detachable connecting part are set in the left and right opposite directions.

Here, as described above, the lower frame 2 4
The four support members 5A to 5D and the four support members 8A to 8D of the upper frame 3 are connected in a freely slidable relationship with each other, and both support members 5A to 5D, 8A to 8 at a predetermined slide position.
The 8Ds are fixed. To describe this configuration in detail, as described above, the support members 5A of the lower frame 2 and the upper frame 3 respectively.
To 5D and 8A to 8D are each formed of a rectangular tube member having a rectangular cross section. In this case, the column members 5 of the lower frame 2
The inner diameters of A to 5D are slightly larger than the outer diameters of the support members 8A to 8D of the upper frame 3, and the support members 8A to 8D of the upper frame 3 are provided inside the support members 5A to 5D of the lower frame 2. Is freely inserted into the slide.

At a predetermined sliding position, both support members 5A to 5A
As fixing means for fixing D, 8A to 8D mutually, FIG.
The lock pin device similar to the lock pin device 15 shown in FIG. The structure of the lock pin device will be described by taking the end structure (FIG. 1B) of the upper horizontal rail member 7D as an example. In FIG. 7, inside the end of the upper horizontal rail member 7D, a device body 20a is provided. A lock pin 20b which is slidably supported in the apparatus main body 20a and whose tip end can be inserted into a lock hole 21 formed on a side wall 8A of the upper frame 3 which is free to slide, and an outer peripheral portion of the lock pin 20b. A fixed lever, which is an operation lever 20c slidably inserted into a substantially L-shaped groove 22 formed in an end wall of the upper horizontal rail member 7D, and the lock pin 20b which is always forward. Push spring 20d elastically biases in the pushing direction
And a lock pin device 20 configured to include:

In this case, the lock pin 20b is
1 and the support member 8A is
A is fixed so that it cannot slide. Also, lock pin 20b
Is pulled out from the lock hole 21, and the lever 20c is
By rotating the lock pin 20b toward the base end side of the lock member 2, the lock pin 20b is held in a retracted state, the fixing of the support member 8A is released, and the support member 8A becomes slidable.

In the present embodiment, the lock pin device 20 is provided at both ends of the two upper cross members 7B and 7D of the fixing structure of the upper frame 3. Also, upper frame 3
In each of the column members 8A to 8D, lock holes 21 are respectively provided at three different height positions, and the lower frame 2
, That is, the height of the work table 1 can be adjusted in three stages.

The scaffold plate 4 includes upper horizontal rail members 7B and 7D of the lower frame 2 and upper horizontal rail members 9B and 9D of the upper frame body 3.
At least the upper cross members 7B, 7D of the upper frame 3
And a plate member having a predetermined area, which is mounted on and is detachably coupled. That is, in FIG. 8, the scaffold plate 4 is formed of a flat and rectangular hollow body having a predetermined thickness. A large number of circular holes 4A are formed in the upper wall of the scaffold plate 4. A reinforcing member 4B extending in the longitudinal direction is provided inside the hollow body at an intermediate portion in a direction orthogonal to the longitudinal direction. Two engaging pieces 4C are fixedly attached to a pair of opposing side walls of the hollow body so as to be separated from each other left and right.

Each of the engaging pieces 4C is formed in a substantially U-shape, and the scaffold plate 4 is used to connect the left and right upper horizontal rail members 7B and 7D of the upper horizontal rail member lower frame 2 or the upper horizontal rails of the upper frame body 3 to each other. Cross member 9B,
9D, the engaging piece 4C is connected to the upper cross member 7.
B, 7D or the upper horizontal beam members 9B, 9D of the upper frame 3 can be engaged. The scaffold plate 4 is formed to have an area obtained by substantially dividing the plane area of the work table 1 into two,
The upper horizontal rail members 7B and 7D of the lower frame body 2 and the upper horizontal rail members 9B and 9D of the upper frame body 3 are selectively placed and used,
The use of one or two sheets is selected according to the working conditions.

Further, in the present embodiment, the lower frame 2
A ladder 23 for selectively climbing to the scaffold 4 used by being selectively placed on the upper portion of the upper frame 3 and the upper portion of the upper frame 3 is provided integrally. The ladders 23 are respectively provided at side end portions of side surfaces opposite to one side of the worktable 1, and the positions of the two ladders 23 are set at positions shifted on a diagonal of the worktable. Each ladder 2
3 is divided into a lower ladder 24 and an upper ladder 25 that is freely slidably assembled inside the lower ladder 24. The lower ladder 24 includes a frame 24A made of a member having a substantially U-shaped cross section and a plurality of horizontal rails 24B made of bar members. Both ends of each cross rail 24B are fixed to both sides of the frame 24A by welding or the like.

The lower ladder 24 having such a configuration is provided with the frame 2
The back surface of one side member of 4A is fixed to the front surface of the support member 5A of the lower frame 2 by welding. In this case, the other side of the frame 24A of the lower ladder 2 is not always fixed to the side of the lower frame 2 and is connected to the lower cross members 6A and 6C in a state where the work table 1 is deployed. It is supposed to be. That is, a substantially U-shaped connecting piece 26 opened rearward is fixed to the lower back surface of one side of the frame body 24A by welding or the like.
The ladders 23, 23 and the lower horizontal rail members 6A, 6C are connected by fitting the coupling pieces 26 to the lower horizontal rail members 6A, 6C in a state where the work table 1 is deployed.

On the other hand, the upper ladder 25 is composed of a frame 25A and a plurality of horizontal rails 25B. The frame body 25A is composed of a pair of rectangular tube members that are disposed apart from each other.
Each of the horizontal rails 25B is made of a round bar, and both ends thereof are fixed to the pair of square tube members by welding or the like. The frame 25A of the upper ladder 25 having such a configuration is slidably inserted inside the frame 24A of the lower ladder 24, and extends upward from the lower ladder 24 and is housed in the lower ladder 24. Selected state. In this case, the upper ladder 25 extended upward with the work table 1 expanded.
One side of the frame 25A has upper cross members 9A and 9C.
Is to be combined.

This configuration is applied to the ladder 23 of the upper cross member 9A.
To explain (FIG. 1C), in FIG. 9, an engaging pin 27A protrudes and is attached to a portion corresponding to the upper right end of the ladder 23 in front of the upper horizontal rail member 9A, while the right side of the frame 25A is attached. A substantially U-shaped engaging groove 27B whose upper part is open is formed in the upper back wall of the worktable 1.
When deploying, the frame 25A and the upper horizontal rail member 9A are joined by engaging the engagement pin 27A with the engagement groove 27B while swinging the upper horizontal rail member 9A. I have.

When the work table 1 is folded, the lower part of the lower ladder 24 of each ladder 23 is connected to the lower part of the support members 5B and 5D, thereby maintaining the work table 1 in the folded state. It has a configuration. This structure is used for supporting member 5D.
The connection between the ladder 23 and the ladder 23 (FIG. 1D) will be described.
As shown in FIG. 10, a lock pin device 28 having the same structure as the lock pin device 15 described above is built in the inside of the end of the lower horizontal rail member 6D connected to the lower end of the support member 5D. I have.

The structure of the lock pin device 28 is the same as that of the lock pin device 15 and will not be described. Only the operation will be described. When the lever 28c slides along the groove 29, the lock pin 28b moves forward and backward. After the lock pin 28b is caused to retreat against the elastic force of the spring 28d and its tip is aligned with the lock hole 30 formed in the lower back wall of the frame 24A of the lower ladder 24, the lock pin 28b Is moved forward by the elastic force of the spring 28d, the lock pin 28b is inserted into the lock hole 30, and one side of the frame 24A of the lower ladder 24 is connected to the support member 6C. Further, after the lock pin 28b is pulled out from the lock hole 30, the lever 28c is rotated to the base end side of the groove 29 to thereby lock the lock pin 28b.
b is held in the retracted state, and the connection between the support member 6C and the frame 24A of the lower ladder 24 is released. When the work table 1 is folded, the engagement pin 27C provided at the upper end of the support member 8B shown in FIG.
By engaging with B, the frame 25A and the support member 8B are connected.

A method of using the work table 1 having such a configuration will be described. First, a description will be given of a case where the work table 1 is folded (when not in use) as shown in FIGS. 1 to 4 and then folded (when not in use) as shown in FIG. When the work table 1 is in the expanded state, the upper frame 3 is fixed to the lower frame 2 in a state where the upper frame 3 is slid upward to a predetermined height position and extended.
Further, in the lower frame 2, a lower horizontal beam member 6 having a bent structure is provided.
A, 6C are fixed in an extended state, and upper horizontal rail members 7A, 7C of a swinging structure extend in the horizontal direction and are connected.
Further, in the upper frame body 3, upper horizontal rail members 9A and 9C having a swinging structure extend in the horizontal direction and are connected. Further, the ladder 23 is fixed in a state where the upper ladder 25 slides upward to a predetermined height position and extends with respect to the lower ladder 24.

When the work table 1 is folded, the fixing of the upper frame 3 to the lower frame 2 is released, and the upper frame 3 is slid downward to be in a contracted state. In the body 2 and the upper frame 3, the supporting members 5A, 5C, 8 of the upper cross members 7A, 7C, 9A, 9C having a swinging structure, respectively.
B, 8D is released, and the upper ladder 25 is released from the lower ladder 23 by sliding the upper ladder 25 downward. The state is accommodated in the lower ladder 24.

Then, in the lower frame 2, the lower horizontal rail members 6A, 6C of the bent structure are released from being fixed in the extended state, and are bent inward at their respective intermediate portions. Further, in the ladder 23, the support member 6 by the lock pin device 28 is used.
B, 6D and the frame 24A of the lower ladder 24 are connected.
As shown in FIG. 5, the work table 1 folded as described above has a height substantially equivalent to the height of the lower frame 2, and one lateral width thereof corresponds to the lateral width of the ladder 23. Note that the other width does not change.

Next, a case where the work table 1 is expanded from a folded state will be described. In the case of expanding, the operation reverse to the above-described operation of folding may be performed. In the ladder 23, the connection of the frame 24A of the lower ladder 24 to the support members 6B and 6D by the lock pin device 28 is released. In the frame 2, the lower horizontal rail members 6A and 6C of the bent structure are changed from the bent state to the expanded state, and are fixed in this expanded state. That is, the engagement lever 12 is engaged with the engagement pin 13, and the lower horizontal rail members 6A and 6C are fixed and held in an extended state.

Further, the upper horizontal beam members 7A, 7C, 9A, 9C of the swinging structure of the lower frame 2 and the upper frame 3, respectively, are fixed to the support members 5A, 5C, 8B, 8D, and are horizontally moved. Make it extended. In the ladder 23, the upper ladder 25 is slid upward with respect to the lower ladder 24 so that the lower ladder 2
4, the ladder 23 is coupled to the upper horizontal rail members 7A, 7C by engaging the engagement pins 27A with the engagement grooves 27B when the upper horizontal rail members 7A, 7C swing. At the same time, the connecting piece 26 at the lower part of the ladder 23 is fitted to the lower horizontal rail members 6A, 6C, and the ladder 23 and the lower horizontal rail member 6A,
And 6C.

The scaffold plate 4 is bridged between the left and right upper horizontal rail members 7B, 7D or 9B, 9D of the work table 1 expanded as described above, and the engaging pieces 4C of the scaffold plate 4 are moved upward. It engages with the crosspiece members 7B, 7D or 9B, 9D. Scaffold board 4
Are upper cross members 7B, 7D of the lower frame 2 and the upper frame 3
Are selectively placed on the upper horizontal rail members 9B and 9D and used, and use of one or two sheets is selected according to work conditions. The height of the work table 1 can be adjusted in three stages,
The caster 18 can be moved to a predetermined position by attaching it to the bottom. The casters 18 are locked when the work table 1 is used. And the worker
Use the ladder 23 to get on the scaffold 4 and
Work on.

According to the work table 1 having such a configuration, there are the following advantages. That is, the work table 1 is a temporary work, and when starting or ending the work, it is necessary to quickly install or remove the work table 1. However, the work table 1 employs a folding structure and a telescopic structure as in this configuration. The table can be easily transformed into a usable state by folding, unfolding, and expanding / contracting the components such as the horizontal rail members, so that complicated assembly work is not required at the start of work and troublesome dismantling work at the end of work. No time is required for installation and removal. Further, in the work table 1 employing the folding structure and the telescopic structure as in the present configuration, it is not necessary to disassemble the components such as the horizontal rail members and store them separately, and the storage space is small. There is no problem that the management is troublesome.

On the other hand, according to the work table 1 of this configuration, as a result of employing the folding structure in addition to the expanding and contracting structure, it is possible to adopt a structure in which the lower frame 2 and the upper frame 3 are expanded and contracted only in the height direction. There is an advantage that it is not necessary to provide a telescopic structure of the inner tube and the outer tube as a whole, the overall weight can be reduced, only light labor is required for carrying, and the handling is excellent. Especially,
In the present embodiment, since the ladder 23 is integrally provided, the ladder 23 can be easily moved up and down to the scaffold plate 4, and further, there is no need to prepare another ladder, and the usability is excellent.

Further, one side of the frame 24A of the lower ladder 24 is connected to the lower cross members 6A and 6C of the lower frame 2 in a state where the workbench is deployed, and is extended upward. Since one side of the frame 25A of the upper ladder 25 is connected to the upper horizontal rail members 9A and 9C of the upper frame 3, the ladder 2
3 is reliably performed, and the worker can stably and safely move up and down the ladder 23. In addition, since the casters 18 are provided at the bottom of the worktable 1, the worktable 1 can be easily moved. By locking the casters 18 during work, the worktable 1 can be installed in a stable state, and the work can be stably performed. You can do it.

Incidentally, there is the following example as an applied method of using the work table 1. That is, when a scaffold having a large area is required, a plurality of work tables 1 are connected to each other and used. That is, as shown in FIG. 11, the plurality of work tables 1 are arranged in front, rear, left and right, and the plurality of work tables 1 are connected to each other using the scaffold plate 4. In this case, the scaffold plate 4 is bridged to the adjacent work table 1, and the engaging pieces 4C are connected to the upper horizontal rail members 7A, 7C, 9A, 9C or 7B, 7D, 9 of the adjacent work table 1, respectively.
B, 9D.

When a plurality of worktables 1 are connected to each other and used, an engagement piece rotatably connected to a side surface of one of the adjacent worktables 1 such as a column member 5A. The engagement grooves 32 of the work table 31 may be engaged with engagement pins 33 protruding from the side surface of the support member 5D or the like of the other work table 1 to connect the adjacent work tables 1 one after another. (See FIGS. 12 and 13).

In this embodiment, each of the frames (post members, cross members) is formed of a rectangular tube member having a rectangular cross section, but may be formed of a cylindrical member.
A substantially L-shaped angle member may be used. When the angle member is used, the weight can be reduced more effectively. Also, in the above embodiment, the lower cross member 6
A and 6C have a bent structure, the upper horizontal rail members 7A and 7C have a swinging structure, and the upper horizontal rail members 9A and 9C have a swinging structure. The upper horizontal rail members 7A, 7C, 9A and 9C also have a lower horizontal rail member. 6A,
As in the case of 6C, a bent structure can be formed by a hinge.

[0058]

As described above, according to the first aspect of the present invention, since the working table employs the folding structure and the expansion and contraction structure, the folding, unfolding, expansion and contraction of the structural members such as the horizontal rail members and the like are possible. Because it can be easily transformed into a usable state by work, troublesome assembling work at the start of work, troublesome dismantling work at the end of work is unnecessary, and installation and removal do not take much time,
Work can be performed efficiently, and there is no need to disassemble and separately store constituent members such as the horizontal rail members, so that there is no problem in that the accommodation space can be reduced and the management thereof is troublesome. Furthermore, there is an advantage that the overall weight can be reduced, only light labor is required for carrying, and the handling is excellent.

According to the second aspect of the invention, the lower frame and the upper frame are made of a tubular member or a substantially L-shaped angle member, respectively, so that the weight can be reduced.

According to the third aspect of the present invention, it is possible to easily configure a rotating structure between the ends of the adjacent lower cross members.

According to the fourth aspect of the present invention, the bending structure of the two lower horizontal rail members opposed to one side of the lower frame can be easily formed.

According to the fifth aspect of the present invention, with the simple configuration of the engaging lever and the engaging pin, the bendable lower cross member can be reliably fixed and held in the extended state.

According to the sixth aspect of the present invention, the swing structure of the two upper cross members opposing one side of each of the lower frame and the upper frame can be simply configured.

According to the seventh aspect of the present invention, the lock pin device having a simple configuration and excellent operability can be used to lock the two upper horizontal rail members facing one side of each of the lower frame member and the upper frame member. The end can be detachably connected to the upper portions of the lower frame and the upper frame, respectively.

According to the eighth aspect of the present invention, the work table can be easily moved, the work table can be installed in a stable state, and the work can be performed stably.

According to the ninth aspect of the present invention, the structure for fixing the two support members to each other at the predetermined slide position can be configured by the lock pin device having a simple configuration and excellent operability.

According to the tenth aspect, the height of the worktable can be easily adjusted according to the work conditions, and the usability can be improved.

According to the eleventh aspect of the present invention, the scaffold plate can be reliably installed on the upper surface of the worktable, and safe work can be performed.

According to the twelfth and fifteenth aspects,
By using a scaffold plate, adjacent work platforms can be connected to each other, and a wide scaffold can be easily formed by a plurality of work platforms.
Usability can be improved.

According to the thirteenth aspect of the present invention, since the ladder is integrally provided, the ladder can be easily moved up and down to the scaffold, and there is no need to prepare another ladder.
It is excellent in usability, and the ladder can be expanded and contracted when the work table is folded, which contributes to downsizing when the work table is not used. In addition, the side of the lower ladder is connected to the lower cross member of the lower frame in a state where the workbench is deployed, and one side of the upper ladder extended upward is connected to the upper part of the upper frame. Since the ladder is connected to the crosspiece member, the ladder is reliably prevented from swaying, and the safety of the ladder when ascending and descending can be improved.

According to the fourteenth aspect of the present invention, the folded state of the work table can be reliably maintained, and safety during transportation of the work table can be improved.

[0072]

[Brief description of the drawings]

FIG. 1 is a perspective view of an embodiment of a worktable according to the present invention.

FIG. 2 is a front view of the work table according to the first embodiment;

FIG. 3 is a side view of the work table of the above.

FIG. 4 is a plan view of the work table of the above.

FIG. 5 is a plan view showing a state where the work table is folded;

FIGS. 6A and 6B are views showing the structure of a portion A in FIG. 1, wherein FIG. 6A is a plan view and FIG.

FIGS. 7A and 7B are views showing the structure of a portion B in FIG. 1, wherein FIG. 7A is a plan view and FIG.

FIG. 8 is a diagram showing a configuration of a scaffold plate in the embodiment, in which (A) is a plan view and (B) is a front view.

9A and 9B are views showing the structure of a portion C in FIG. 1, wherein FIG. 9A is a plan view and FIG.

FIGS. 10A and 10B are views showing a structure of a portion D in FIG. 1, wherein FIG. 10A is a plan view and FIG.

FIG. 11 is a front view illustrating an example of a method of connecting and using a plurality of work platforms.

FIG. 12 is a front view for explaining another example of the method in the case where a plurality of work tables are connected to each other and used.

FIG. 13 is a front view showing the structure of a portion E in FIG. 12;

[Explanation of symbols]

 Reference Signs List 1 work table 2 lower frame 3 upper frame 4 scaffold plate 5A to 5D support member 6A to 6D lower horizontal rail member 7A to 7D upper horizontal rail member 8A to 8D support member 9A to 9D upper horizontal rail member 10 hinge 11 hinge DESCRIPTION OF SYMBOLS 12 Engagement lever 13 Engagement pin 14 Bracket 15 Lock pin device 18 Caster 19 Bracket 20 Lock pin device 23 Ladder 24 Lower ladder 25 Upper ladder 28 Lock pin device 31 Engagement piece 33 Engagement pin

Continued on the front page (72) Inventor Ansei Fukuyama 262 Shimowada, Yamato-shi, Kanagawa Pref.

Claims (15)

[Claims] 1. Four pillar members, which are arranged in four directions so as to form a square shape and are spaced apart in four directions, and are respectively inserted between lower portions of adjacent pillar members to connect the lower pillar members to each other. A lower frame member comprising: two lower horizontal rail members; and four upper horizontal rail members each extending between the upper portions of the adjacent column members and interconnecting the upper portions of the column members. Four strut members arranged so as to be spaced apart from each other to form a shape, and four upper cross members each extending between upper portions of adjacent strut members and interconnecting the upper strut members. And an upper frame member of the lower frame member and an upper horizontal member member of the upper frame member, which are mounted on at least the upper horizontal member of the upper frame member and are detachably coupled to each other. A scaffold plate having a predetermined area; and two opposing one sides of the lower frame. The lower cross member is configured such that both end portions thereof are connected to the lower portion of the lower frame so as to be bent inwardly, and is formed to be bent inward at a substantially middle portion in the longitudinal direction. A holding means for holding a possible lower horizontal rail member in an extended state is provided, and two upper horizontal rail members opposed to one side of the lower frame body have one end portions respectively at the lower frame body. And the other end is detachably connected to the upper part of the lower frame, and the same side of the upper frame as one side of the lower frame. Each of the two upper cross members facing each other has one end rotatably connected to the upper part of the upper frame, and the other end attached to and detached from the upper part of the upper frame. The four support members of the lower frame and the four support members of the upper frame slide with each other. A work table, wherein the work table is provided with a fixing means for fixing the two support members to each other at a predetermined slide position while being freely connected. 2. The workbench according to claim 1, wherein the lower frame and the upper frame are each formed of a cylindrical member or a substantially L-shaped angle member. 3. In the lower frame, a pillar member is connected to one of the adjacent lower horizontal rail members, and ends of the adjacent lower horizontal rail members are connected to each other via a hinge. The workbench according to claim 1, wherein: 4. The lower cross rail member facing one side of the lower frame body is divided at a substantially middle portion in the longitudinal direction, and the division members are connected via a hinge fixedly attached to the outer surface side. The work table according to any one of claims 1 to 3, wherein the work table is connected. 5. An engaging lever having a hook portion is rotatably coupled to a tip portion of the one dividing member, and a hook portion of the engaging lever is engaged to a tip portion of the other dividing member. 5. An engaging pin is provided, and said holding means for holding the bendable lower cross member in an extended state is constituted by an engaging lever and an engaging pin. Workbench. 6. One end of each of two upper cross members opposing one side of each of the lower frame and the upper frame is pivoted by a bracket fixedly attached to an upper end of a corresponding support member. The other end portion is detachably connected to upper portions of the lower frame member and the upper frame member, respectively, by a connecting means, while being connected as much as possible. The workbench described in. 7. The connecting means comprises a lock pin device incorporated inside the other end of the upper cross member,
The lock pin device includes a device main body, a lock pin slidably supported in the device main body, and having a tip end insertable into a lock hole formed in a side wall of the support member, and a lever fixed to an outer peripheral portion of the lock pin. An operating lever slidably inserted into a substantially L-shaped groove formed in an end wall of the upper horizontal rail member, and a pusher which elastically urges the lock pin in a direction of normally pushing forward. The work table according to claim 6, comprising: a spring. 8. A moving caster is attached to a bottom of the lower frame.
The workbench according to any one of Items 1 to 7, 9. The fixing means for fixing the two support members to each other at the predetermined sliding position comprises a lock pin device built inside the end of the upper horizontal rail member of the lower frame, wherein the lock pin device is provided. A lock pin that is slidably supported in the apparatus main body and has a distal end that can be inserted into a lock hole formed in a freely slidable support member side wall of the upper frame, and fixed to an outer peripheral portion of the lock pin. An operating lever slidably inserted into a substantially L-shaped groove formed in an end wall of an upper horizontal rail member, and an elastic lever in a direction in which the lock pin is normally pushed forward. 2. A biasing push spring, comprising:
The workbench according to any one of-8. 10. A lock hole is provided at each of a plurality of different height positions of each of the freely slidable support members of the upper frame body, and the height position of the upper frame body with respect to the lower frame body is adjusted in a plurality of steps. The work table according to claim 9, wherein: 11. The scaffolding plate is placed on at least the upper horizontal rail member of the upper frame member of the upper horizontal rail member of the lower frame member and the upper horizontal rail member of the upper frame member, and is detachably connected thereto. The work table according to any one of claims 1 to 10, wherein the work table is formed of a plate member having a predetermined area. 12. The scaffold plate is installed in a state of being bridged to an adjacent work table among a plurality of work tables arranged in front, rear, left and right, and both ends of the scaffold plate are connected to upper cross members of each of the adjacent work tables. The work table according to claim 11, wherein the work table is used as a work table connecting plate that connects adjacent work tables by engaging with each other. 13. A ladder for climbing up to a scaffold that is selectively mounted on the upper cross member of the lower frame and the upper cross member of the upper frame, and the ladder is The lower ladder is divided into an upper ladder that is freely slidably assembled inside the lower ladder, and the lower ladder has one of its back surfaces fixed to the front of the support of the lower frame, and the other of the other ladder. One side of the upper ladder, which is coupled to the lower cross member of the lower frame in a state where the workbench is deployed, and is extended upward in a state where the workbench is deployed, is a side of the upper frame. The work table according to any one of claims 1 to 12, wherein the work table is coupled to the upper cross member. 14. When the workbench is in a folded state, the lower ladder is always fixed to the lower part of the support member to which the lower ladder is not fixed.
14. The workbench according to claim 13, wherein the lower part of the lower ladder is coupled to maintain the workbench in a folded state. 15. A workbench connecting means for connecting adjacent worktables among a plurality of worktables arranged in front, rear, left and right directions, and pivots to a side of a support member of one of the adjacent worktables. An engagement piece having an engagement groove that is freely coupled, and an engagement pin that is provided to protrude from the side surface of the support member of the other worktable and is engaged with the engagement groove of the engagement piece. The workbench according to any one of claims 1 to 14, wherein the workbench includes means for connecting the workbench.