JP2019194406A - Workbench - Google Patents

Abstract

To provide a structure in which support columns of a base and leg members of a tread are mutually reinforced in both a contracted state and an extended state, and which also can be simplified for size and weight reductions.SOLUTION: A workbench includes: a base B in which support columns 3 are arranged at four corners, respectively, and concurrently the four support columns 3 are connected by connecting members 4; and a tread F in which leg members 5 inserted inside the four support columns 3 of the base B in a vertically telescopic manner are provided at four corners of a tread plate 6. Between the support column 3 of the base B and the leg member 5 of the tread F, there are provided: contraction means α by which the four leg members 5 can be inserted to the lower parts of the four support columns 3 in a first posture S1 in which the four leg members 5 of the tread F correspond to the four support columns 3 of the base B; and extending means β which allows the lower portions of the four leg members 5 to be held in an inserted state on the upper portions of the corresponding four support columns 3 in a second posture S2 in which the tread F is separated upward from the base B from the first posture S1 and undergone horizontal rotation.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a workbench in which the height of a footboard can be changed.

There is one described in Patent Document 1 as a work table from which one work height can be obtained in two steps.
The working platform includes an upper table and a lower table each having a top plate portion, and a connecting means for rotating the upper table around a vertical axis and ascending / descending along the axis. On the other hand, it is a stepping pedestal that holds the top plate at different heights H1 and H2 (where H1 <H2) by moving the upper base, and is located around the axis and spaced apart from the upper base. In addition to providing an upper leg portion, a plurality of lower leg portions are provided at intervals in the lower base, the upper leg portion is stored between adjacent lower leg portions, and the lower leg portion is stored between adjacent upper leg portions. By forming a first height step having a height from the lower end of the step to the upper surface of the top plate portion as the height H1, and supporting the upper leg portion on the lower leg portion, The second height with the height from the lower end to the top surface of the top plate as the height H2 Constituting the platform (Japanese claim 1).

Japanese Patent No. 5400752

In the prior art, the top plate portion can be arranged in two steps, but when the step is made high, the upper leg portion rests on the lower leg portion, so the shape of the placement surface must be increased. In order to connect the lower leg part and the upper leg part, it requires a connecting means that allows the upper base to rotate around the vertical axis and move up and down along the axis, and is a complicated, large and heavy work. It is a stepping board.
An object of the present invention is to provide a workbench that can solve such problems of the prior art.

  SUMMARY OF THE INVENTION An object of the present invention is to provide a work table that can reinforce each other in both a contracted state and an extended state, and can be reduced in size and weight with a simple structure.

Specific means for solving the problems in the present invention are as follows.
First, the base B in which the pillars 3 are arranged at the four corners and the four pillars 3 are connected by the connecting material 4, and is inserted into the four pillars 3 of the base B so as to be movable up and down. And a footrest F provided with the leg material 5 provided at the four corners of the footboard 6,
In the first posture S1 in which the four legs 5 of the platform F correspond to the four columns 3 of the platform B between the columns 3 of the platform B and the legs 5 of the platform F, four The contraction means α that allows the legs 5 to be inserted to the lower part of the four columns 3, and the four in the second posture S <b> 2 in which the step F is detached from the base B from the first posture S <b> 1 and rotated horizontally. It has the extending means β which makes it possible to hold the lower part of the leg member 5 in the inserted state on the upper part of the corresponding four columns 3.

Secondly, the four struts 3 of the base B are formed of an angle material having two orthogonal side walls and are arranged in a regular square shape in plan view, and the four legs 5 of the step F have a cross section. The first posture S1 and the second posture S2 are formed by rectangular square pipes and arranged in a regular square in plan view, and the horizontal rotation angle is 90 degrees.
Thirdly, the extension means β has a positioning member 7 that is provided on the upper part of the column 3 of the base B and contacts the lower part of the leg material 5 of the step F in the second posture S2.
The contraction means α has a gap 8 formed between the side wall of the column 3 of the base B and the positioning member 7 and allowing the leg material 5 of the step F in the first posture S1 to be inserted. And

Fourth, the positioning member 7 is formed by laying a pipe material on top of the two columns 3, and the lower end of the leg member 5 of the step F in the second posture S <b> 2 has a lower end entering the gap 8. An inclined lower edge 5a that is inclined obliquely upward from the lower end and contacts the positioning member 7 is formed.
Fifth, an upper and lower portable part 11 is provided on the upper part of the base B, and a lower and upper portable part 11 is detachably engaged with the upper and lower portable part 11 in the first posture S1 on the lower surface side of the tread plate 6. A portable unit 12 is provided.

Sixth, a connecting projection 13 is provided on the connecting member 4 on two orthogonal sides of the base B, and the connecting protrusion 4 on the other two connecting members 4 on the orthogonal base B is connected with the connecting protrusion 13. The cooperation concave part 14 is provided in the position corresponding to a side surface, and the said cooperation protrusion 13 and the cooperation recessed part 14 are detachable so that one base B and the other base B may cooperate horizontally. It is characterized by that.
Seventh, a locking portion 15 is provided in the lower part of the base B, and a locked portion 16 is provided on the tread plate 6 at a position corresponding to the locking portion 15 in a plan view. The locking portion 15 and the locked portion 16 are detachable in order to place one base B on another step F and restrict horizontal movement.

According to the present invention, the support column of the base and the legs of the step are reinforced with each other in a contracted state or an extended state, and the size and weight can be reduced with a simple structure.
That is, in the invention according to claim 1, the legs 5 of the platform F are inserted into the four pillars 3 of the base B so as to be vertically extendable and movable, and the lower portions of the four legs 5 of the platform F are Since it inserts to the lower part of the four support | pillars 3 by 1st attitude | position S1, and hold | maintains in the insertion state on the upper part of the 4 support | pillars 3 by 2nd attitude | position S2, Even in a contracted state and an extended state, they can reinforce each other and secure a connection, and can be reduced in size and weight with a simple structure.

In the invention according to claim 2, since the four struts 3 are formed of angle members and the four leg members 5 are formed of rectangular pipes having a rectangular cross section, the struts 3 and the leg members 5 are strong and lightweight. Since the long side direction of the leg member 5 is displaced 90 degrees between the first posture S1 and the second posture S2, the contraction means α and the extension means β can be formed with a simple structure. become.
In the invention according to claim 3, the extending means β can be easily constituted by the lower part of the leg member 5 and the positioning member 7 in contact with the leg member 5, and the contracting means α can be easily constituted by the leg member 5 and the gap 8 through which the leg member 5 is inserted. .

In the invention according to claim 4, the positioning member 7 is formed by laying a pipe material on the upper part of the two columns 3, and the inclined lower edge 5 a is formed on the lower part of the leg member 5. Can be configured.
In the invention according to claim 5, since the upper and lower portable parts 11 are provided on the upper part of the base B and the upper and lower portable parts 12 are provided on the lower surface side of the step board 6, the step F is carried on the base B and is in a contracted state. The handling such as transportation between the base B and the step F at the center becomes easy.

In the invention according to claim 6, since the connecting projections 4 are provided on the connecting members 4 on the two sides of the base B and the connecting recesses 14 are provided on the connecting members 4 on the other two sides, When the work tables are arranged, the cooperation protrusions 13 and the cooperation recesses 14 can be engaged with each other for cooperation.
According to the seventh aspect of the present invention, the locking portion 15 is provided at the lower portion of the base B, and the locked portion 16 is provided on the tread plate 6 so that when the two work tables are stacked up and down, the locking portion 15 and the locked part 16 can be engaged, and the horizontal movement of a mounting worktable can be controlled.

FIG. 2 is an explanatory perspective view showing an embodiment of the worktable of the present invention and showing three states of a contracted state, an extended state, and a separated state of the base and the platform. It is a front view which shows the side-by-side state and the stacked state of a plurality of work tables. It is a front view of the extension state of a work table. It is a partial cross section front view of the contracted state of a work table. It is a side view of the extended state of a work table. It is a partial cross section side view of the contracted state of a work table. It is a top view of a work table. It is a top view of a base. It is a cross-sectional front view which shows the state which removed the step from the base. It is a cross-sectional side view of the extended state of a work table. It is a section front view of the extension state of a work table.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
1 to 11, a work table 1 is a frame body having a regular square shape in a plan view and a rectangular shape in a side view, and includes a base B and a step F that is inserted into the base B so as to be movable up and down. The base B and the step F are in the contracted state and the low step height is displayed as the work platform 1A, and the base B and the step F are in the extended state and the high step height is the work platform 1B. Displayed, and the one in which the step F is detached upward from the base B is displayed as a work table 1C.

The base B has columns 3 arranged at four corners, and the four columns 3 are connected by a connecting member 4 and a lower connecting member 21. The four struts 3 are formed of an angle material having two orthogonal side walls and are arranged in a regular square shape in plan view, and an L-shaped mounting plate 22 is fixed to the lower part and the installation tool 23 is mounted so that the height can be adjusted. Yes.
The lower connecting member 21 is formed of a plate member (or angle member) bent in an L-shaped cross section, and both ends thereof are fixed to the lower portions of the side walls of the two columns 3 by rivet bonding or welding or the like. Although the connecting member 21 has the same shape, a pin-shaped locking portion 15 is provided at the lower central portion in the longitudinal direction of the two lower connecting members 21 on opposite sides, and the locked portion 16 of the platform F described later. And can be engaged with and disengaged.

Both ends of the connecting member 4 are fixed to the side walls of the two columns 3 by rivet bonding or welding, etc., and the connecting protrusions 4 are provided on the connecting member 4 on two sides of the base B which are orthogonal to each other. A connecting concave portion 14 is provided at a position corresponding to the side of the connecting protrusion 13 in the connecting member 4 on the other two orthogonal sides of the base B.
As shown in FIG. 2, when the two work tables 1A are arranged side by side, the cooperation protrusion 13 of the base B of one work table 1A becomes the cooperation recess 14 of the base B of the other work table 1A. It is intended to be able to engage with and disengage from each other so that they can be linked horizontally. Since one work table 1A has two protrusions 13 and two recesses 14 arranged on each side, the other work tables 1A can be linked to four surfaces of one work table 1A. Further, instead of the work table 1A, the form of the work table 1B or the combination of the work table 1A and the work table 1B can be linked.

In the base B, a positioning member 7 is formed by laying a pipe material on top of two pairs of opposed columns 3. Each positioning member 7 has both ends of the pipe material fixed to the side walls of the two columns 3 facing each other via screws or the like, and there is a gap between the inner surface of the side wall orthogonal to the side wall to be fixed and the positioning member 7. 8 is formed.
Both positioning members 7 are arranged in parallel to each other, and an erection plate 24 is connected to the center in the longitudinal direction, and an upper and lower portable part 11 formed of a C-shaped spring plate is provided at the center of the erection plate 24. It is possible to detachably engage with an upper / lower portable part 12 of a platform F described later.

The step F includes a step plate 6 and four legs 5 fixed to the lower surfaces of the four corners of the step plate 6, and the four legs 5 are inside the four columns 3 of the base B. It is inserted so that it can be vertically expanded and contracted. The arrangement of the four leg members 5 is also a square in a plan view like the support column 3.
The tread plate 6 has a top plate portion 6a serving as a tread surface, and side wall portions 6b descending from four sides of the top plate portion 6a, and the lower portions of the side wall portions 6b are fixed to the leg members 5 so The posture is reinforced.

The leg 5 is formed by a rectangular pipe having a rectangular cross section having a long side and a short side, the long sides of the four legs 5 are arranged in the same direction, and the dimension W1 of the long side is a column. 3 is sufficiently larger than the gap 8 between the side wall 3 and the positioning member 7, and the short side dimension W <b> 2 is set smaller than the gap 8.
In the lower part of the leg member 5, there is formed an inclined lower edge 5a that appears obliquely upward from the lower end and appears on the long side. The inclined lower edge 5 a comes into contact with the positioning member 7 because the long side dimension W 1 is larger than the gap 8.

The leg member 5 has a short side dimension W2 smaller than the gap 8, so that the leg member 5 can be inserted into the gap 8 when the long side direction (direction along the long side) is parallel to the positioning member 7.
When the posture of the step F in which the long side direction of the leg member 5 is parallel to the positioning member 7 is the first posture S1, the four leg members 5 are inserted into the gaps 8 and inserted to the lower portions of the four columns 3. The gap 8 and the rectangular cross section of the legs 5 are the contraction means α, and the work table 1 can be made to take the form of a work table 1A having a low stepping height (FIGS. 1 and 2). 4 and 6).

In the work platform 1A having a low stepping height that is contracted by inserting the lower part of the leg material 5 of the platform F to the lower part of the column 3 of the base B, the lower end of the leg material 5 forms the bottom of the column 3 Abutting on the mounting plate 22 and supporting a load applied to the top plate portion 6 a, the leg member 5 is supported by a bending load by the outer support column 3.
The platform F can be lifted vertically from the form of the work table 1A, and can be lifted up and detached from the base B to form the work table 1C (shown in FIGS. 1 and 9). In this disengaged state, the step F can be rotated horizontally.

If this horizontal rotation is performed 90 degrees, the lower part of one leg 5 will change the correspondence from the corresponding support 3 to the next support 3, and the longer side of the support 5 is parallel to the positioning member 7. The direction changes from the normal direction to the intersecting direction, and the leg 5 cannot be inserted into the gap 8.
When the step F is horizontally rotated 90 degrees from the first posture S1 to the second posture S2, the lower portions of the four legs 5 are formed with the inclined lower edges 5a, so that the lower ends are pointed. Therefore, it is inserted into the gap 8 between the side wall of the support column 3 and the positioning member 7, but since the long side direction is perpendicular to the longitudinal direction of the positioning member 7, the inclined lower edge 5 a comes into contact with the positioning member 7, The above descent is prevented.

  In the step F, the lower end of the leg member 5 enters the gap 8 at the lower end, and the lower inclined edge 5a comes into contact with the positioning member 7, whereby the lower part of the four leg members 5 is inserted into the upper part of the corresponding four columns 3. Thus, the upper part of the support column 3, the positioning member 7, the gap 8 and the like serve as the extension means β, and the work table 1 can take the form of the work table 1B having a high step height ( 1 to 3, 5, 10, and 11).

In a work platform 1B having a high step height in which the leg material 5 of the step F is inserted and held on the upper part of the column 3 of the base B, the lower end of the leg 5 is attached to the inner surface of the side wall of the column 3 and the positioning member 7. It abuts, supports the load applied to the top plate portion 6a, and supports the bending load applied to the legs 5.
Note that when the step F is horizontally rotated 180 degrees from the first posture S1, it does not become the second posture S2, but remains in the first posture S1.

On the lower surface side of the center of the tread plate 6, there is provided an upper / lower portable portion 12 that is detachably engaged with the upper / lower portable portion 11 on the upper portion of the base B in the first posture S1. Due to the engagement of the upper and lower portable parts 11 and the upper and lower portable parts 12, the base B and the platform F are in a portable state and are not inadvertently separated when carrying the work table 1 </ b> A.
The tread plate 6 is provided with a locked portion 16 at a position corresponding to the locking portion 15 in the lower part of the base B in a plan view. As shown in FIG. The base B can be placed on the step F of the other work table 1A to restrict horizontal movement. The locked portions 16 are formed at four locations, and can be stacked on another work table 1A even if the work table 1A is horizontally rotated by 90 degrees.

In addition, this invention is not limited to the said embodiment, The shape of a member, a structure, a combination, etc. can be changed.
For example, a square pipe may be used for the support column 3, the leg member 5 may be formed of an angle member, and a round bar or a square member having a surface that can be in contact with the inclined lower edge 5a may be used for the positioning member 7. .
Further, the connecting member 4 and the lower connecting member 21 may be shared by a single plate member, or a plurality of sets of the erection plate 24 and the upper and lower portable parts 11 and the upper and lower portable parts 12 may be provided.

  The base B and the step F may be formed in a substantially octagonal shape in plan view, and the columns 3 and the legs 5 may be arranged at four corners at equally spaced positions, respectively.

DESCRIPTION OF SYMBOLS 1 Worktable 3 Support | pillar 4 Connecting material 5 Leg material 5a Inclined lower edge 6 Tread plate 6a Top plate part 6b Side wall part 7 Positioning member 8 Crevice 11 Vertical portable part 12 Vertical portable part 13 Cooperation protrusion 14 Cooperation recessed part 15 Locking part 16 Covered Locking portion 21 Lower connecting material 22 L-shaped mounting plate 23 Installation tool 24 Installation plate α Contracting means β Extending means B Base F Footrest S1 First posture S2 Second posture W1 Long side dimension W2 Short side dimension

Claims (7)

The base (B) in which the pillars (3) are arranged at the four corners and the four pillars (3) are connected by the connecting member (4), and the four pillars (3) of the base (B) A footrest (F) provided on the four corners of the footboard (6) with leg members (5) inserted inwardly in a vertically movable manner;
The four legs (5) of the platform (F) are placed between the support (3) of the platform (B) and the legs (5) of the platform (F). In the first posture (S1) corresponding to the column (3), the contraction means (α) that allows the four legs (5) to be inserted to the lower part of the four columns (3), and the first posture ( The four struts (3) corresponding to the lower parts of the four legs (5) in the second posture (S2) in which the step (F) is separated from the base (B) upward from S1) and horizontally rotated. And a stretching means (β) that can be held in an inserted state at the upper part of the work table.   The four struts (3) of the base (B) are formed of an angle member having two orthogonal side walls and are arranged in a square in plan view, and the four legs (5) of the step (F) ) Is formed by a rectangular pipe having a rectangular cross section and is arranged in a square in plan view, and the first posture (S1) and the second posture (S2) have a horizontal rotation angle of 90 degrees. The workbench according to claim 1. The extension means (β) is a positioning member (provided on the upper part of the column (3) of the base (B) and abutting the lower part of the leg (5) of the step (F) in the second posture (S2). 7)
The contraction means (α) is formed between the side wall of the column (3) of the base (B) and the positioning member (7), and the legs (F) of the step (F) in the first posture (S1) 5. The workbench according to claim 1, further comprising a gap (8) that allows the insertion of 5).   The positioning member (7) is formed by laying a pipe material on top of the two columns (3), and below the leg material (5) of the step (F) in the second posture (S2), The work table according to claim 3, wherein a lower end entering the gap (8) and an inclined lower edge (5a) facing obliquely upward from the lower end and contacting the positioning member (7) are formed. .   An upper and lower portable portion (11) is provided on the upper portion of the base (B), and the lower surface side of the tread plate (6) is freely detachable from the upper and lower portable portion (11) in the first posture (S1). The worktable according to any one of claims 1 to 4, further comprising an upper and lower portable part (12) that engages with the upper and lower parts.   Coupling protrusions (13) are provided on the two orthogonal connecting members (4) of the base (B), and the other two orthogonal connecting members (4) of the base (B) are connected to each other. Is provided with a cooperating recess (14) at a position corresponding to the side of the cooperating protrusion (13), and in order to horizontally coordinate one base (B) with another base (B), The workbench according to any one of claims 1 to 5, wherein the linkage protrusion (13) and the linkage recess (14) are detachable.   The lower part of the base (B) is provided with a locking part (15), and the tread plate (6) has a locked part (16) at a position corresponding to the locking part (15) in a plane. ) And the locking portion (15) and the locked portion (16) in order to place one base (B) on the other step (F) and restrict horizontal movement. The workbench according to claim 1, wherein the work table is freely detachable.

Images