JP2002188285A - Workbench - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a workbench which is easy to fold, and excellent in workability and safety. SOLUTION: The workbench is formed of front and rear legs 1 and 2, a top board 5, top board bearing crosspieces 6, connecting fixtures 7, and a pair of braces 8. The top board 5 can be folded in two like an inverted V letter. The top board bearing crosspieces 6 bear front and rear ends of the top board 5. The connecting fixtures 7 connect upper ends of right and left supports 3 to the front and rear ends of the top board 5, respectively, in a mutually rotatable manner. The braces 8 are obliquely stretched over an interval between a stepping crosspiece 4 of the front leg 1 and the rear top board bearing crosspiece 6, and an interval between the stepping crosspiece 4 of the rear leg 2 and the front top board bearing crosspiece 6, and have their lower ends rotatably supported by the stepping crosspieces 4 and their upper ends by the top board bearing crosspieces 6, respectively. Each brace 8 is formed of a long portion 21 and a short portion 22 which are connected together in a manner being foldable in two like an inverted V letter, and a difference between a distance from an upper rotation center of each brace 8 to a connection center and a distance from a lower rotation center to the connection center is equal to a distance from the upper rotation center of one of the braces 8 to the lower rotation center of the other brace 8. Further, both the long portions 21 of the respective braces are rotatably connected together.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a foldable work table.

[0002]

2. Description of the Related Art As a foldable work table, a stepladder is generally used.

[0003]

Although the conventional stepladder has the convenience of being easily folded, it has problems such as a small working space and a prohibited work on the top plate. There is a need for improvements.

An object of the present invention is to provide a work table which can be easily folded and has excellent workability and safety.

[0005]

According to a first aspect of the present invention, there is provided a work table comprising a pair of front and rear legs including left and right columns and at least one step crossed between them, and upper ends of the front and rear legs. A top plate that can be folded in two in an inverted V-shape with the front and rear ends rotatably supported by the upper ends of the front and rear legs that are passed between the front and rear sections, ensuring stability during work and folding after work is completed The front and rear leg connecting means is provided between the front and rear legs in an X-shape to prevent the front and rear legs from opening when the work table is used, and Is provided with a pair of oblique members that move so that the front and rear legs come closer to each other when folded into an inverted V-shape.

The respective oblique members may be provided so as to connect right and left central portions of the front and rear legs, or may be provided so as to connect left and right side portions of the front and rear legs.

According to the work table of the first invention, a wide work place is secured on the top plate, and the rotation of the top plate with respect to the front and rear legs is prevented by the front and rear leg connecting means. And
After the work is completed, the top plate is folded in an inverted V-shape so that the oblique members move so that the front and rear legs approach each other, and the entire worktable is folded compactly.

The structure of the connecting portion between each of the oblique members and the front and rear legs,
Various configurations are possible for the configuration of each oblique member so that the top plate is prevented from rotating during use and compactly folded at the time of folding.

In the first invention, each of the oblique members is
For example, a long portion and a short portion are connected in a V-shape so as to be able to be folded in two, and upper and lower ends thereof are rotatably supported by corresponding front and rear legs, respectively. May be rotatably connected to each other.

In this case, the difference between the distance from the center of rotation of the upper end of each oblique member to the center of the connecting portion and the distance from the center of rotation of the lower end to the center of the connecting portion is determined by the upper end rotation of one of the oblique members. The distance is substantially equal to the distance from the moving center to the center of rotation of the lower end of the other oblique member. In this way, when the top plate is folded in two after the work is completed, the lower end of each oblique member rotates with respect to the tread of the front and rear legs, and the upper end thereof rotates with respect to the top receiving tray. At the same time, the short part of each oblique member rotates with respect to the long part, and the entire worktable is folded compactly.

Here, the difference between the distance from the center of rotation of the upper end of each of the oblique members to the center of the connecting portion and the distance from the center of rotation of the lower end to the center of the connecting portion is determined by the upper end of one of the oblique members. It is equal to the distance from the center to the center of rotation of the lower end of the other oblique member. "Means that AB = CE-BE and CD = AF-DF in FIG. And
"Substantially" means that along the folding center plane of each line, considering that the distances of the points A, B, C, D, E and F from the folding center plane are not the same in FIG. This means that the length of each line segment is finely adjusted so that the distances become equal.

In this specification, “=” means
The term "substantially equal" shall be used.

In this specification, "can be folded in a V-shape" means that it can be folded in a V-shape at an intermediate portion and cannot be folded in a reverse V-shape. This means that “invertible V-shape can be folded in two” means that the middle part can be folded in an inverted V-shape and cannot be folded in a V-shape. . These terms are used not only for horizontal members, but also for diagonal members, and when the two-folded part moves upward (directly or obliquely upward), the phrase "inverted V-shape" is used. It is called “two-fold”, and when moving downward (directly or diagonally downward), “V
"Fold it in the shape of a letter." A member that can be folded in a V-shape can be obtained, for example, by abutting two members and connecting them rotatably to each other at the upper edge of the abutting portion. Possible members can be obtained, for example, by abutting two members and pivotally connecting them at the lower edge of the abutment.

In the workbench of the first aspect,
Each diagonal member is made impossible to fold, and its upper end is rotatably supported by the corresponding front and rear legs,
The lower end may be slidably supported by a guide member provided on the corresponding front and rear legs and regulating the upper and lower ends of the moving distance of the oblique member. Here, in order for the workbench to be compactly folded, the connection center between the upper end of the oblique member and the top plate receiving bar is A and C, and the upper end position of the guide member = the lower end position of the oblique member when the worktable is used. B
And D, the lower end position of the guide member = the lower end position of the oblique member when the workbench is folded, M and N, and the following conditions are required: AD = AM and CB = CN.

In the work table of the first invention, each of the oblique members can be folded in two and the lower end is rotatably supported by the front and rear legs. Then, one of the front and rear ends of the top plate is rotatably supported by the upper ends of the corresponding front and rear legs, while the other end is free, and the free end side of the top plate At the upper ends of the front and rear legs, one end of a pair of left and right top plate supporting horizontal members is rotatably supported, and the other end of this horizontal member is rotatable to the front and rear central portions of the top plate. It can also be supported by. The conditions for compactly folding this worktable are the same as those in which each diagonal member can be folded in two and the lower end is rotatably supported by the front and rear legs.

The workbench according to the second aspect of the present invention comprises a pair of front and rear legs comprising left and right columns and at least one step crossed between them, and a front and rear end portion which is passed between upper ends of the front and rear legs. A worktable provided with a foldable top plate that is rotatably supported at the upper ends of the front and rear legs, and front and rear leg connecting means that ensures stability during work and enables folding after work is completed. The front and rear leg connecting means is horizontally passed between the front leg and the rear leg, the front and rear ends are rotatably supported by the corresponding front and rear legs, and a foldable horizontal member, and the lower end is horizontal. A vertical member rotatably connected to the two bent portions of the member, and an upper end rotatably connected to the two bent portions of the top plate, and one of the upper and lower ends of the vertical member and the front and rear legs; When it is passed diagonally between and the top plate is folded in two, the front and rear legs And it is characterized in that it has a pair of oblique members moving to characterize.

Each member of the front and rear leg connecting means may be provided so as to be located at the left and right central portions of the front and rear legs, or may be provided at the left and right side portions of the front and rear legs.

According to the work table of the second invention, a wide work place is secured on the top plate, and the rotation of the top plate with respect to the front and rear legs is prevented by the front and rear leg connecting means. And
After the work is completed, the top plate is folded in an inverted V-shape, whereby the members of the front and rear leg connecting means move so that the front and rear legs are close to each other, and the entire worktable is folded compactly.

Various configurations are possible for the configuration of the connecting portion of each member, the configuration of each diagonal member, and the like so that the top plate is prevented from rotating when used and compactly folded when folded.

In the work table according to the second aspect of the present invention, at the lower end of the vertical member, the connecting portion between the vertical member and the two bent portions of the horizontal member is vertically movably guided and both ends of the movement are regulated by the vertical guide. Preferably, a member is provided.
By doing so, the opening is prevented from being opened at the time of work, and the movement of each member at the time of folding is smoothly performed, and the rattling in the folded state is also prevented.

In the work table of the second aspect, each of the oblique members is, for example, foldably folded in an inverted V-shape between the upper end of the vertical member and the front and rear ends of the horizontal member. In some cases, the top plate and the horizontal member can be folded in two in a V shape.

In this case, the center of rotation of the front end of the horizontal member =
The center of rotation of the lower end of the front oblique member is B, the center of rotation of the rear end of the horizontal member is D, the center of rotation of the lower end of the rear oblique member is D, and the upper end position of the guide member is two horizontal members when the workbench is used. The bent portion is H, the upper end rotation center of the vertical member = the upper end rotation center of the front oblique member = the upper end rotation center of the rear oblique member = G is the bifold portion of the top plate, and the front oblique member is G. BI + B where I is the folded portion, J is the folded portion of the rear oblique member, and K is the folded portion of the horizontal member when the workbench is folded.
K = IG + GK and DJ + DK = JG + GK, AG
The center of rotation of each member is determined so that + GK = AB + BK and CG + GK = CD + DK.

In the workbench of the second aspect,
Each diagonal member is made extendable and contractible, and the upper end is rotatably connected to the upper end of the vertical member, and the lower end is rotatably connected to the front and rear ends of the horizontal member, respectively. In some cases, it can be folded in an inverted V-shape.

In this case, the center of rotation of the front end of the horizontal member =
The center of rotation of the lower end of the front oblique member is B, the center of rotation of the rear end of the horizontal member is D, the center of rotation of the lower end of the rear oblique member is D, and the center of rotation of the vertical member is the upper end of the front oblique member. Rotation center =
Center of rotation of upper end portion of rear oblique member = G for two folded portions of top plate, upper end position of guide member = H for two folded portions of horizontal member when folding work table, lower end position of guide member = work table When the horizontal part of the horizontal member at the time of use is K, BA + AG = GH
The center of rotation of each member is determined so that + HB and DC + CG = GH + HD hold.

Further, in the work table according to the second aspect of the present invention, each of the oblique members is provided so as to be folded in an inverted V-shape between the lower end of the vertical member and the upper ends of the front and rear legs. In some cases, the top plate and the horizontal member can each be folded in an inverted V-shape.

In this case, B is the center of rotation of the front end of the horizontal member, D is the center of rotation of the rear end of the horizontal member, G is the center of rotation of the upper end of the vertical member = G is the bent portion of the top plate, and I is the center of the two folds of the oblique member, J is the center of the two folds of the rear oblique member,
The upper end position of the guide member = H is a two-folded portion of the horizontal member when the workbench is folded, and the lower end position of the guide member is the two-folded portion of the horizontal member when the workbench is used = the center of rotation of the lower end of the front oblique member = K is the center of rotation of the lower end of the rear oblique member, and BA + AI
= IH + HB and DC + CJ = JH + HD, BA +
The rotation center and the like of each member are determined so that AG = GH + HB and DC + CG = GH + HD.

A work table according to a third aspect of the present invention is a workbench comprising a pair of front and rear legs including left and right columns and at least one step crossed therebetween, and a pair of front and rear ends crossed between upper ends of the front and rear legs. Work comprising a non-foldable top plate that is rotatably supported at the upper ends of the front and rear legs, and front and rear leg connecting means that ensures stability during the work and enables folding after the work is completed. In the table, the front and rear leg connecting means is composed of a first diagonal member and a second diagonal member provided in an X-shape between the front and rear legs, and the first diagonal member can be folded in two in a V-shape.
The oblique member is not allowed to be folded in two, and the folded portion of the first oblique member and the lower end of the second oblique member approach each other when the top plate is rotated with respect to the front and rear legs. It is characterized by having.

In this case, the rotation center of the front end of the top plate is A, the rotation center of the rear end is C, the rotation center of the upper end of the first oblique member is B, and the rotation center of the lower end is the same. Q, the center of the two bent portions is R, the center of rotation of the upper end of the second oblique member is D, and the center of rotation of the lower end is P, and the center of rotation of the oblique member and the center of rotation of the second oblique member are defined as AC + AP = CD + DP. A two-fold joint is determined.

Each diagonal member may be provided so as to connect the left and right central portions of the front and rear legs, or may be provided so as to connect the left and right side portions of the front and rear legs.

[0030] In the work tables of the first to third inventions, the front and rear top plate receiving bars provided at the upper end of each leg to receive the front and rear ends of the top plate are further provided. The contour of the section is a convex arc shape when viewed from the left and right directions, and the upper surface of the top plate receiving bar is formed into a concave arc shape when viewed from the left and right directions. In some cases, the guide is guided by a plate receiving bar. With this configuration, the load applied to the top plate is supported by the top plate receiving bar, the folding can be performed smoothly, and the hand scissors when the work table is opened and closed can be prevented.

[0031] Further, there is further provided a connecting fitting for rotatably connecting the upper ends of the left and right supports and the front and rear ends of the top plate, and the connecting fitting is attached to the support fixed to the upper end of the support. Part, a cover part connected to the mounting part to the support and covering the upper end surface of the support, and a mounting part to the top plate connected to the cover part and rotatably mounted on the left and right side parts of the top plate. is there. In this case, the connecting metal covers the upper end surface of the column, so that a cover for covering the upper end of the column is not required, and the number of components can be reduced.

Further, the top plate receiving bar and the predetermined step bar may be provided with storage fittings with which front and rear corresponding members are engaged when folding is completed. The storage fitting can have various configurations.For example, the storage fitting is formed in a substantially U-shape with an opening facing outward in the front-rear direction, and horizontally projecting engagement claws are provided on the upper edge and the lower edge of the bottom wall thereof. The engaging claws intersect in a sliding manner with the workbench folded. This prevents the legs from moving and rattling in the left and right directions in the folded state (lateral displacement phenomenon), and can be easily transported and stored. In addition, the storage metal fitting is formed such that the columns are exactly parallel to each other when the storage metal fitting is folded, so that even if a large number of worktables are placed side by side, they do not collapse.

[0033]

Embodiments of the present invention will be described below with reference to the drawings.

In this specification, for the front and rear, the right in FIG. 2 is referred to as front, the left as rear, and the left and right are referred to rear.

FIGS. 1 to 12 show the first embodiment of the first invention.
1 shows an embodiment.

The work table according to the first aspect of the present invention comprises a left and right support (3)
And a pair of front and rear legs (1) and (2) consisting of four steps of stairs (4) suspended between the struts (3) and a top plate (5) that can be folded in two in an inverted V shape, The front and rear top receiving bars (6) provided at the upper ends of the legs (1) and (2) to receive the front and rear ends of the top (5), and the upper and lower supports (3) and the top (5) A connecting bracket (7) for rotatably connecting the front and rear ends to each other, a step (4) of the front leg (1), and a rear baking tray (6).
And the oblique member (8), which is passed diagonally between the step (4) of the rear leg (2) and the front top receiving tray (6), the top receiving tray (6) and the predetermined A storage bracket (9) provided on each of the step rails (4) (in this example, at the bottom) is provided so that it can be folded from the use state shown in FIG. 2 to the storage state shown in FIG. ing.

Each of the columns (3) and the step (4) is made of an extruded aluminum material. Each pillar (3) is formed in a U-shape in cross section, and has an opening facing inward. Each step
(4) is formed in a substantially trapezoidal cross section, and its upper wall (described only in a large view) protrudes inward. The front and rear legs (1) and (2) are slightly widened downward, and the angle between each of the columns (3) and the ground is about 83 °.

As shown in detail in FIGS. 4 to 7, the top plate (5) includes a pair of front and rear scaffold plates (11) and (12) and a front scaffold plate (11).
Fixing brackets (13) and (14) fixed to the connection side end (rear end) of the vehicle and the connection side end (front end) of the rear scaffold plate (12), respectively.
And a movable bracket (15) for connecting the fixing brackets (13) and (14) so as to be relatively rotatable, and fixed to a front end of the front scaffold plate (11) and a rear end of the rear scaffold plate (12). The front and rear covers (16) and the left and right covers (17) attached to the fixing brackets (13) and (14) with tapping screws (18) so as to cover the left and right ends of the movable bracket (15). Consisting of

The front and rear scaffolding plates (11) and (12) are made of an aluminum extruded material whose extrusion direction is the front and rear direction.
(14) The movable bracket (15) and the front and rear cover portions (16) are formed by extruding aluminum in a lateral direction.

The front and rear scaffolding plates (11) and (12) include an upper wall serving as a tread portion, left and right walls with inwardly projecting edges, and an intermediate reinforcing wall.

Each of the fixing brackets (13) and (14) is formed in a substantially U-shape in cross section. The fixing brackets (13) and (14) close the opening on the connecting end side of the front and rear scaffolding plates (11) and (12), and have the movable brackets (15). ) Combined with top plate
It also has the function of constituting hinge means for folding (5) in half.

As shown in detail in FIG. 4 and FIG. 5, a front scaffold plate having a concave groove (32) opened rearward is provided on a lower wall portion of a fixing bracket (13) fixed to the front scaffold plate (11). Side hinge component (3
On the lower wall of the fixing bracket (14) fixed to the rear scaffold plate (12), a rear scaffold plate side hinge component (33) having a concave groove (34) opened forward is provided. Have been. Movable metal fittings (15)
The front hinge component (35) rotatably fitted in the concave groove (32) of the front scaffold plate-side hinge component (31) and the concave portion of the rear scaffold plate-side hinge component (33). A rear hinge component (36) rotatably fitted in the groove (34).

The lower wall portion of the concave groove (32) of the front scaffold plate side hinge constituting portion (31) is flat, and an engaging portion (37) extending upward is provided at the rear edge thereof. Similarly, the lower wall of the concave groove (34) of the rear scaffold plate-side hinge component (33) is flat, and its front edge is provided with an engaging portion (38) extending upward. . Inside the concave groove (32) of the front scaffold plate side hinge component (31), there is a cross-section arc-shaped guide of a quarter circle from the middle of the upper wall to the front edge of the lower wall. A surface is provided, and a concave groove (34) of the rear scaffold plate side hinge component (33) has a size of a quarter circle from the middle of the upper wall to the rear edge of the lower wall. An arcuate guide surface in cross section is provided. The front hinge portion (35) of the movable bracket (15) has a bent portion (39) having a substantially circular arc cross section having an outer peripheral surface along the circular arc guide surface of the corresponding concave groove (32), and a lower edge thereof. And a rearward-facing engagement portion (40) connected to the movable portion (40), and the rear hinge component (36) of the movable bracket (15) has a corresponding concave groove (3).
It comprises a bent portion (41) having a substantially arc-shaped cross section having an outer peripheral surface along the arc-shaped guide surface of (4), and a forward folded engaging portion (42) connected to a lower edge portion thereof. The distal end of each of the folded engagement portions (40) and (42) is formed in an arc shape with a cross section having a size of a half circle, and the engagement portion ( At the base of (37) and (38), a guide surface having an arc shape in cross section is provided.

Each of the fixtures (13) and (14) has a movable fixture.
(15) The left and right cover parts (1
Tapping screw insertion portions (43) and (44) having a C-shaped cross section for attaching 7) with tapping screws (18) are formed.

The top plate receiving bar (6) is made of an extruded aluminum material and has a substantially rectangular cross section. Top plate receiving bar (6)
Is crossed between the left and right columns (3) in the same manner as the step (4), but has a cross-sectional shape different from that of the step (4). That is, as shown in FIG. 6, the upper wall of the top plate receiving bar (6) is formed to have an arc-shaped upper surface (6a) having a concave cross section. This shape is for guiding the front and rear ends of the top plate (5) when folded, and correspondingly, the front and rear ends of the top plate (5), that is, the front and rear cover portions (5) of the top plate (5). 16) is formed as follows.

Since the cover (16) of the top plate (5) has the same shape before and after, the front cover (16) will be described with reference to FIG. 6 and FIG.

The front cover part (16) of the top plate (5) is connected to the front scaffold plate (1).
1) A sliding wall (51) formed in a semicircular cross section from the end of the upper wall to the vicinity of the end of the lower wall, and a front scaffold plate (11) connected to the upper end of the sliding wall (51). ), An upper rivet stop wall (52) extending along the upper wall, and a front scaffold plate (1) connected to the lower end of the sliding wall (51).
1) A lower rivet stopping wall (53) extending along the lower wall, and a closing wall (54) connected to the upper end of the sliding wall (51) and extending downward to close the end opening of the front scaffold plate (11). ) And a positioning wall (55) extending from the lower end of the closing wall (54) along the lower wall of the front scaffold plate (11).

A connecting fitting (7) for connecting the left and right columns (3) and the top plate (5) has a mounting portion (61) to the column (61) fixed to the upper end of the outer wall of the column (3) by rivets. ), A cover (62) connected to the mounting part (61) to the column and covering the upper end surface of the column (3), and a shoulder bolt (64) connected to the cover (62) and attached to the side of the top plate (5). ) And a mounting portion (63) to a top plate rotatably mounted by a nut (65). As shown in FIG.
Attachment part (63) to top plate (7) and front scaffold plate (11) for top plate (5)
The stepped shaft portion (64a) of the stepped bolt (64) having a shaft in the left-right direction is loosely inserted into the bolt shaft portion insertion hole drilled.

As shown in FIG. 7, the concave arc-shaped upper surface (6a) of the top plate receiving bar (6) has a radius substantially equal to the radius of the sliding wall (51) of the front cover portion (16) and substantially equal to one. / 4 circle arc,
When the workbench is in use, the lower surface portion of the sliding wall (51) of the front cover (16) is placed on the top receiving tray (6). Therefore,
The front scaffold plate (11) of the top plate (5) can rotate clockwise in FIG. 6 around the axis of the stepped bolt (64), and the support (3)
The top plate (5) can be rotated with respect to.

Each diagonal member (8) is composed of a long part (21) and a short part (22) which are connected in a V-shape so that they can be folded in two. The intermediate portions of the long portions (21) of the two oblique members (8) are connected to each other by a connecting pin (23) in an X shape and rotatable with respect to each other.

At substantially the center of the third step from the bottom, a lower support (19) for rotatably supporting the lower end of the short portion (22) of each oblique member (8) is attached. At the corresponding position of the plate receiving bar (6), an upper support (20) for rotatably supporting the upper end of the long part (21) of each oblique member (8) is attached.

A long portion (21) of each oblique member (8) includes a long square pipe (24), and an end connecting fitting (25) fitted to the upper end of the square pipe (24). It consists of a butt connection fitting (26) fitted to the lower end of the square pipe (24), and similarly, the short part (22) has a short square pipe (27) and a square pipe (2).
A butt connection fitting (28) fitted to the upper end of (7) and rotatably connected by a butt connection fitting (26) of a long part (21) and a connecting pin (30), and a square pipe ( An end connection fitting (29) fitted to the lower end of (27).

Each of the butting portion connection fittings (26) of the long portion (21) and the butting portion connection fitting (28) of the short portion (22) has a rectangular cylindrical main body portion. They are connected so that they can be folded in two only in the direction of the butted and inverted V-shape. That is, the butt connecting metal fitting (26) of the long part (21) is provided with an ear part (26a) extending upward from the inner wall of the main body part, and the butt connecting metal fitting (28) of the short part (22) is provided. The ears (28a) extending upward from the outer wall of the main body portion are provided in opposition, and these ears (26a) (28
a) The pins are rotatably connected to each other by a pin (30) having an axis at the upper edge of the butting surface.

The end fittings (2) of the long part (21) and the short part (22)
5) (29) is made of an extruded material extending in the left-right direction, and has cylindrical portions (25a) (29a) formed at its ends.

The upper support bracket (20) provided on the top plate receiving bar (6) has a U-shaped mounting portion (71) fitted to the top plate receiving bar (6) from below, and a mounting portion. The supporting portion (72) includes left and right opposing walls provided on the inner side wall of the (71) so as to protrude inward. The mounting part (71) consists of the mounting part (71) and the top plate receiving bar (6).
The nut is fastened to a bolt (73) penetrating through the base plate, thereby being fixed to the top plate receiving bar (6). And the cylindrical part (25a) of the end fitting (25) of the long part (21) of each oblique member (8)
The bolt (74) penetrating the opposing wall of the support portion (72) of the upper support fitting (20) is loosely inserted into the oblique member (8).
Is rotatable with respect to the top plate receiving bar (6).

The lower support (19) provided on the step (4) includes a U-shaped mounting part (75) fitted to the step (4) from below, and a mounting part (75). ) And a support portion (76) formed of left and right opposed walls provided on the lower wall so as to protrude downward. The mounting portion (75) is provided with a nut which is fastened to a bolt (77) penetrating the mounting portion (75) and the step (4).
Fixed to (4). And the short part of each oblique member (8)
The lower support bracket (19) is attached to the cylindrical portion (29a) of the end bracket (29) of (22).
By loosely inserting a bolt (78) penetrating the opposing wall of the support portion (76), the lower end of the diagonal member (8) is rotatable with respect to the step rail (4).

As shown in FIGS. 10 and 11, the storage metal fitting (9) is a substantially U-shaped metal fitting with an opening facing outward in the front-rear direction. Engaging claw
(9a) and (9b) are provided. The storage brackets (9) are all of the same shape, and the engaging claws (9a) (9b) are fixed to the step (4) of the front leg (1) as shown in FIG. For those that are located on the upper right half of the bottom wall and the lower left half of the bottom wall, and fixed to the step (4) of the rear leg (2), the upper left edge of the bottom wall Part and the lower right half.
Therefore, when the workbench is folded, as shown in FIG. 11, the upper engaging claws (9a) and the lower engaging claws (9a)
b) each other intersects in a rubbing manner,
The front and rear legs (1) and (2) are prevented from shifting left and right. Also, in this folded state, the butting surfaces of the storage fixtures (9) are parallel to the length direction of the column (3). Therefore, in the folded state shown in FIG.
(3) An interval for accommodating the oblique member (8) is maintained between the members, and lateral displacement during transportation and storage is prevented.

When the above work table is in use, the top plate (5)
The front scaffold plate (11) and the rear scaffold plate (12) are abutted, and the long part (21) and the short part (22) of the diagonal member (8) are abutted. As shown in FIG. 5, the top plate (5) is folded in an inverted V-shape with the lower edge portion of the abutting surface of the front scaffold plate (11) and the rear scaffold plate (12) as the center of rotation. It is possible, but it is not possible to fold it into a V shape, and the load on the top plate (5) is firmly secured by the top plate (5), the front and rear legs (1) (2), and the oblique member (8). It is accepted. The force that the front and rear legs (1) and (2) try to spread acts in the direction in which the diagonal member (8) tries to fold the inverted V-shape, so that the diagonal member (8) ) (2)
Perform an opening prevention function, which prevents them from opening each other.

This work table is folded as follows. In the following description, A and C are diagonal members (8)
B and D denote the connection center (the axis of the bolt (74)) between the upper end of the oblique member (8) and the step
The center of connection with (4) (the axis of bolt (78)) is E and F
Indicates the connection center (the axis of the pin (30)) between the long part (21) and the short part (22) of the oblique member.

Since the top plate (5) can be folded in two in an inverted V shape as described above, first, as shown by a solid line in FIG.
Fold the top plate (5) into an inverted V-shape. Each diagonal member (8) can be folded in two in a V-shape with the upper edge of the abutting surface of the long part (21) and the short part (22) as the center of rotation (see FIG. 9). , V-shaped. At this time, the front and rear legs (1) and (2) first move from the chain line in FIG. That is, A and C approach each other and move upward with reference to the connection center (the axis of the connection pin (23)) between the long portions (21) of the oblique member (8),
B and D move away from each other and upward, and E and F move closer to each other and downward. When the top plate (5) is further folded from the state of FIG. 12, the front and rear legs (1)
(2) approach each other, and finally, as shown in FIG. 3, the short part (22) rotates 180 ° with respect to the long part (21),
The short part (22) is accommodated in a position parallel to the strut (3) below the third step from the bottom, and the lower end of the long part (21) overlaps with the short part (22). , The long part (2
1) The left and right legs are superimposed on each other and housed between the front and rear legs (1) and (2). A notch (4a) is provided in a portion of the step (4) that interferes with the oblique member (8) (see FIGS. 1 and 9).

In the above, as shown in FIG. 3, the condition for folding compactly is that the distance (line segment AF and line segment AF) It is the length of the minute AE and the long part (21)
) And the distance from the lower end rotation centers D and B of the oblique members (8) to the connection center F and E (the length of the line segment DF and the line segment BE, (Corresponding to the length of the portion (22)) between the upper end pivot centers A and C of the one oblique member (8) and the lower end pivot center B and the other oblique member (8). The distance to D (the length of the line segment AB and the line segment CD, which corresponds to the length of the entire oblique member (8) along the column (3)) is substantially equal. That is, line segment AB = line segment CD ≒ line segment CE-line segment B
E = line segment AF−line segment DF. Here, point A
And point B are located near the center of symmetry of the folded state, points E and F are located respectively on the rear side of the front strut and the front side of the rear strut slightly outside thereof, and point B and point F E is positioned so as to overlap with the column further outside. The above “substantially equal” means that the points A, B, C, D, E, and F in FIG. The long part (21) and the short part (22) of the diagonal member (8) so that the diagonal member (8) just fits between 2).
Means that the dimensions of are adjusted.

By ensuring such conditions,
At the initial stage of folding, the center of rotation of the lower end of each oblique member moves in the direction away from each other, unless the top plate is folded in two to some extent, the entire folding work table will not be folded and the lock in use Has been fulfilled. Therefore, for example, even when the work table in use is transported while holding the support table sideways, the work table is not inadvertently closed by its own weight.

In the above working table, the front and rear legs (1) and (2) are connected by a pair of oblique members (8).
As shown above, this oblique member (8) is changed to front and rear leg connecting means composed of another member (a combination of an oblique member, a guide member, a horizontal member, a vertical member, etc.), and the same folding characteristics are obtained. The work table having the above can be obtained.

In the following description, the drawings are simplified,
Mainly, the front and rear leg connecting means will be described.

The work table shown in FIG. 13 shows a different embodiment of the work table of the first invention. As shown in the figure, the top plate (5) of the work table is
By (72), the lower edge of the central portion of the top plate (5) can be folded in an inverted V-shape about the center of rotation, and the front and rear leg connecting means is constituted by a pair of oblique members (73). I have.

The diagonal member (73) cannot be folded in two, and its middle part is connected to each other by a connecting pin (23) in an X shape and rotatable with respect to each other.

As in the first embodiment, the upper end of the oblique member (73) is connected to the corresponding front and rear legs (1) via the end connection fitting (25).
It is rotatably attached to the top plate receiving bar (6) of (2).

The lower end of the oblique member (73) is provided on the front and rear legs (1) and (2) with a guide member (74) provided in parallel with the support (3).
It is slidably mounted on. Guide member (74)
Are end connecting brackets (2) provided at the lower end of the oblique member (73).
9), the lower end of which is located near the lower end of the column (3), and the upper end of which is located slightly above the middle of the column (3). The lower end of the oblique member (73) is located at the upper end of the guide member (74) when using the workbench, and at the lower end when folded.

The working table of this embodiment is in
It is not possible to fold the top plate (5) into a V-shape, and the load on the top plate (5) is reduced by the top plate (5), the front and rear legs (1) (2), and the oblique member (73). It is received firmly.

The work table is folded as follows. In the following description, A and C denote the connection center between the upper end of the oblique member (73) and the top plate receiving bar (6) as B,
And D are the upper end position of the guide member (74) = the lower end position of the oblique member (73) when using the workbench, and M and N are the lower end position of the guide member (74) = the oblique member (when the workbench is folded). 73) shows the lower end position.

Since the top plate (5) can be folded in two in an inverted V shape as described above, as shown in FIG.
When (5) is folded in an inverted V shape, the lower end of each diagonal member (73) moves downward along the guide member (74), and accordingly, the front and rear legs (1) and (2) Are attracted to each other. Here, as a condition that the work table is folded compactly as shown in FIG. 13C, AD = AM and CB = CN, that is, the distance from the center of rotation of the upper end of the oblique member (73) to the center of the lower end guide. And the guide member from the upper end of the oblique member (73)
(74) The distance to the lower end along the front and rear legs (1) and (2) may be equal.

The work table shown in FIG. 14 shows still another embodiment of the work table of the first invention. As shown in the figure, the top plate (75) of the worktable is not foldable, and the front end of the top plate (75) is rotatably supported by the upper end of the front leg (1). However, the rear end is free. The rear end of the horizontal member (76) for supporting the top plate is rotatably supported on the upper end of the rear leg (2).
The other end of 6) is rotatably supported at the front and rear central portions of the top plate (75). Therefore, when using a workbench,
As shown in (a), the horizontal member (76) is the rear half of the top plate (75).
(75b), and when folded, as shown in (b),
The horizontal member (76) and the front half (75a) of the top plate (75) can be folded in two in an inverted V-shape.

According to this work table, the horizontal member (76) and the top plate
The first half (75a) of (75) can be folded in two, and the top plate (75)
The second half (75b) of the top plate (75) is treated as an extension of the first half (75a) of the top plate (75). The same relationship as in the first embodiment holds, AB = CE-BE and CD = AF-D
Under the condition F, the worktable can be folded compactly.

In the above three embodiments, the front and rear legs (1) and (2)
Although the case of using the pair of oblique members (8) and (73) passed between them has been described, as shown in FIGS. 15 to 17,
As the front and rear leg connecting means, while passing a horizontal member (81) (91) (101) foldable at the center between the front and rear legs (1) (2),
Vertical member between horizontal member (81) (91) (101) and top plate (85) (5)
Pass the (82) (92) (102), the oblique member (83) between one of the upper and lower ends of the vertical member (82) (92) (102) and the front and rear legs (1) (2)
(93) and (103) may be passed. In this specification, these are referred to as a second invention.

FIG. 15 shows a first embodiment of the second invention. The front and rear leg connecting means shown in FIG. 15 is horizontally passed between the front leg (1) and the rear leg (2). A horizontal member (81) that can be folded in two into a V-shape that is rotatably supported by the corresponding front and rear legs (1) and (2), and a horizontal member (81) that has a lower end that is folded in two. A vertical member (82), the upper end of which is rotatably connected to the folded portion of the top plate (85), which is rotatably connected to the V-shaped top plate (85), and a vertical member ( (82) and the front and rear legs (1) and (2) are moved diagonally to move the front and rear legs (1) and (2) closer together when the top plate (5) is folded in two A pair of oblique members (83) that can be folded in two in an inverted V-shape, and a two-folded portion of the horizontal member (81) provided at the lower end of the vertical member (82) with respect to the vertical member (82) A guide member (84) that guides up and down movement and regulates both ends of movement. It has.

In this embodiment, the center of rotation of the front end of the horizontal member (81) = B is the center of rotation of the lower end of the front oblique member (83), and the center of rotation of the rear end of the horizontal member (81) is rearward. Side diagonal member (83)
Is the center of rotation of the lower end of D, the upper end position of the guide member (84) is H, the bent portion of the horizontal member (81) is H, and the vertical member is
(82) = rotation center of upper end = rotation center of upper end of front diagonal member (83) = rotation center of upper end of rear diagonal member (83) = G The two bends of the front oblique member (83) are I,
The folded portion of the rear diagonal member (83) is designated as J, the lower end position of the guide member (84) is designated as K, and the folded portion of the horizontal member (81) when the workbench is folded is designated as K. 81) Conditions for folding between (82) and (83) BI + BK = IG + GK and DJ +
DK = JG + GK and conditions for folding including the top plate (85) AG + GK = AB + BK and CG + GK = CD +
Each member (81) (82) (83) (84) (85) so that DK is established
Is determined.

According to this worktable, as shown in FIG. 9B, when the front and rear diagonal members (83) are folded in two, the top plate (85) and the horizontal member (81) Is also folded in two, with the lower half of the oblique member (83) being parallel to the column (2) and the upper half being substantially parallel to the top plate (85). Horizontal member (8
The two bent portions of 1) move downward along the guide member (84). In this state, when the front and rear legs (1) and (2) are brought close to each other, the upper half and the lower half of the oblique member (83) become parallel, and the top plate (85) and the horizontal member (81) are completely Then, it is folded compactly as shown in FIG.

FIG. 16 shows a second embodiment of the second invention. The front and rear leg connecting means shown in FIG. 16 is horizontally passed between the front leg (1) and the rear leg (2). A horizontal member (91) that can be folded in two in an inverted V-shape that is rotatably supported by corresponding front and rear legs (1) and (2);
A vertical member (92) rotatably connected to the two folded portions of the top plate (5) whose upper end portion is rotatably connected to the two folded portions of the top plate (5) that can be folded in an inverted V-shape; The front and rear legs (1) and (2) are brought closer to each other when the top plate (5) is folded in half by being passed diagonally between the upper end of the vertical member (92) and the front and rear legs (1) and (2). And a pair of extendable diagonal members (93), and a horizontal member (91) provided at the lower end of the vertical member (92).
A guide member (94) is provided to guide up and down movement with respect to 2) and to regulate both ends of movement.

In this embodiment, the center of rotation of the front end of the horizontal member (91) = B at the center of rotation of the lower end of the front oblique member (93), and the center of rotation of the rear end of the horizontal member (91) = Back. Side diagonal member (93)
The rotation center of the lower end of the vertical member (92) is D, the rotation center of the upper end of the vertical member (92) = the rotation center of the upper end of the front oblique member (93) = the rear oblique member (9).
Center of rotation of upper end of 3) = G for two folded portions of top plate (5), upper end position of guide member (94) = Horizontal member (91) when workbench is folded
(A), where H is a two-folded portion and K is a two-folded portion of the horizontal member (91) when the work table is used.
BA + AG = GH
The center of rotation of each member (91) (92) (93) (94) is determined so that + HB and DC + CG = GH + HD are satisfied.

According to this work table, as shown in FIG. 8B, when the top plate 5 and the horizontal member 91 are folded in two,
The oblique member (93) extends, and the two-folded portion of the horizontal member (91) moves upward along the guide member (94). In this state, when the front and rear legs (1) and (2) are brought closer to each other, the oblique member (93) further extends, and the top plate (5) and the horizontal member (91) are completely folded in two. Length of the slanted member (93) when the workbench is folded = BA +
AG = DC + CG, and the image is folded compactly as shown in FIG.

FIG. 17 shows a third embodiment of the second invention. The front and rear leg connecting means shown in FIG. 17 is horizontally passed between the front leg (1) and the rear leg (2). A horizontal member (101) that can be folded in two in an inverted V-shape rotatably supported by corresponding front and rear legs (1) and (2), and a horizontal member (10
It is rotatably connected to the two bent parts of 1), and the upper end is the top plate
Vertical member (102) rotatably connected to the two folds of (5)
And, when the top plate (5) is folded obliquely between the lower end of the vertical member (102) and the front and rear legs (1) and (2), the front and rear legs (1)
(2) A pair of oblique members (10
3) and a horizontal member (10) provided at the lower end of the vertical member (102).
A guide member (1) that guides the two bent portions of (1) up and down with respect to the vertical member (102) and controls both ends of the movement.
04).

In this embodiment, the horizontal member (101)
B is the center of rotation of the front end of the horizontal member (101), D is the center of rotation of the rear end of the horizontal member (101), G is the center of rotation of the upper end of the vertical member (102) = G is the two-folded portion of the top plate (5). I is the center of the two folds of the diagonal member (103), J is the center of the two folds of the rear diagonal member (103), and the upper end position of the guide member (104) is the horizontal member (101) when the workbench is folded.
Is H, the lower end position of the guide member (104) = the two-folded portion of the horizontal member (101) when using the workbench = the front oblique member
The center of rotation of the lower end of (103) = K, the center of rotation of the lower end of the rear oblique member (103) is K, and the members (101), (102), (10)
3) Conditions for folding between each other BA + AI = IH + HB and DC + CJ = JH + HD, and conditions for folding including the top plate (5) BA + AG = GH + HB and DC + C
Each member (101) (102) so that G = GH + HD holds.
(103) The center of rotation of (104) is determined.

According to this workbench, as shown in FIG. 8B, when the front and rear diagonal members (103) are folded in two, the top plate (5) and the horizontal member (101) are accordingly folded. Is also folded in two, with the lower half of the oblique member (103) being parallel to the vertical member (102) and the upper half thereof being substantially parallel to the top plate (5). The two-folded portion of the horizontal member (101) moves upward along the guide member (104). In this state, when the front and rear legs (1) and (2) are brought close to each other, the upper half and the lower half of the oblique member (103) become parallel, and the top plate (5) and the horizontal member (101) are completely Then, it is folded compactly as shown in FIG.

FIG. 18 shows a workbench according to the third invention. In the figure, the front and rear leg connecting means is passed diagonally between the left and right columns of the front leg (1) and the left and right columns of the rear leg (2), and the front and rear ends correspond to the front and rear legs (1) (2). First diagonal member (111) that is rotatably supported and can be folded in a V-shape
And it is passed diagonally between the left and right struts (3) of the front leg (1) and the left and right struts (4) of the rear leg (2) so as to cross the first diagonal member (111), and the front and rear ends are Non-foldable second oblique member (112) rotatably supported by the corresponding front and rear legs (1) and (2)
And The first oblique member (111) includes a long portion (114) having a lower end connected to the rear leg (2) and a short portion (115) having an upper end connected to the front leg (1). The upper end of the long part (114) and the lower end of the short part (115) are rotatably connected to each other.

The folding conditions on this work table are as follows:
A, the center of rotation of the front end is A, the center of rotation of the rear end is C, the center of rotation of the upper end of the first diagonal member (111) is B, the center of rotation of the lower end is Q, and the two are bent. The center of the part is R, and the second oblique member (1
In (12), the center of rotation of the upper end is D, and the center of rotation of the lower end is P, and AC + AP = CD + DP.

According to the work table, when the rear leg (2) is rotated so that the angle between the rear leg (2) and the top plate (113) becomes small, as shown in FIG. With the first oblique member
(111) is folded in a V-shape, and the rear leg (2) approaches the front leg (1). When the above condition is satisfied, the long part (114) and the short part (115) of the first oblique member (111) overlap, and the top plate (113) and the rear leg (1) overlap, As shown in FIG. 3C, the sheet is folded compactly.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a work table according to a first invention.

FIG. 2 is a side view of the working table according to the first invention in a used state;

FIG. 3 is a side view of the working table according to the first invention in a stored state.

FIG. 4 is an enlarged perspective view showing a main part of a two-fold top plate.

FIG. 5 is an enlarged cross-sectional view showing a state where the top plate is being folded in two.

FIG. 6 is an enlarged perspective view showing a joint portion between a top plate and a support.

FIG. 7 is a sectional view taken along the line VII-VII in FIG. 6;

FIG. 8 is a sectional view taken along line VIII-VIII in FIG.

FIG. 9 is an enlarged perspective view showing a detailed configuration of the oblique member.

FIG. 10 is an enlarged perspective view showing a detailed configuration of a storage fixture.

FIG. 11 is an enlarged sectional view of the same.

FIG. 12 is a side view showing a state where the workbench according to the first invention is being folded;

FIG. 13 is a side view showing another embodiment of the worktable according to the first invention.

FIG. 14 is a side view showing still another embodiment of the work bench according to the first invention.

FIG. 15 is a side view showing the first embodiment of the worktable according to the second invention.

FIG. 16 is a side view showing a second embodiment of the workbench according to the second invention.

FIG. 17 is a side view showing a third embodiment of the workbench according to the second invention.

FIG. 18 is a side view showing an embodiment of a worktable according to the third invention.

[Explanation of symbols]

 (1) Front leg (2) Rear leg (3) Left and right support (4) Step bar (5) Top plate (6) Top plate receiving bar (6a) Arc-shaped upper surface (7) Connecting bracket (8) Diagonal member (9) Storage metal fittings (21) Long part (22) Short part (61) Mounting part to column (62) Cover part (63) Mounting part to top plate (73) Diagonal member (74) Guide member (75) Top plate (76) Horizontal member (81) Horizontal member (82) Vertical member (83) Diagonal member (84) Guide member (91) Horizontal member (92) Vertical member (93) Diagonal member (94) Guide member (101) Horizontal member (102) Vertical member (103) Diagonal member (104) Guide member (111) First diagonal member (112) Second diagonal member (113) Top plate

Claims (13)

[Claims] 1. A pair of front and rear legs (1) and (2) each comprising left and right columns (3) and at least one step bar (4) held between them, and a pair of front and rear legs (1) and (2). Inverted V that is passed between the upper ends and the front and rear ends are rotatably supported by the upper ends of the front and rear legs (1) and (2).
In a worktable provided with a top plate (5) that can be folded in two in a character shape and front and rear leg connecting means that secures stability at the time of work and allows folding after work is completed, the front and rear leg connecting means is , It is passed between the front and rear legs (1) and (2) in an X-shape to prevent the front and rear legs (1) and (2) from opening when the workbench is used, and the top plate (5) is inverted V-shaped. A pair of oblique members (8) (73) that move so that the front and rear legs (1) and (2) come closer to each other when folded
A workbench comprising: 2. Each of the diagonal members (8) is composed of a long part (21) and a short part (22) connected in a V-shape so as to be able to be folded in two,
The upper and lower ends thereof are rotatably supported by the corresponding front and rear legs (1) and (2), respectively, and the long portion (21) of each oblique member (8)
The workbench of claim 1, wherein the worktables are rotatably connected to each other. 3. Each diagonal member (73) cannot be folded in two, and its upper end is rotatably supported by the corresponding front and rear legs (1) and (2), and its lower end is , Corresponding front and rear legs
2. The work table according to claim 1, wherein the work table is slidably supported by a guide member (74) provided on (1) and (2) and for regulating the upper and lower ends of the moving distance of the oblique member (73). 4. The top plate (75) cannot be folded in two, and either one of the front and rear ends of the top plate (75) is corresponding to the corresponding front and rear legs (1).
The upper end of (2) is rotatably supported, but the other end is free, and the upper ends of the front and rear legs (1) and (2) on the free end side of the top plate (75) One end of a pair of left and right top plate support horizontal members (76) is rotatably supported by the part, and the other end of the horizontal member (76) is located at the center of the front and back of the top plate (75). 3. The work table of claim 2, wherein the work table is rotatably supported. 5. A pair of front and rear legs (1) and (2) comprising left and right columns (3) and at least one step bar (4) held therebetween, and a pair of front and rear legs (1) and (2). A top and bottom foldable top plate (5) (85) that is passed between the upper ends and is pivotally supported on the upper ends of the front and rear legs (1) and (2). In a worktable provided with front and rear leg connecting means that secures and allows folding after the end of work, the front and rear leg connecting means is horizontally passed between the front leg (1) and the rear leg (2), A bi-foldable horizontal member (81) (91) (101) rotatably supported by corresponding front and rear legs (1) and (2), and a horizontal member (81) (91) at the lower end Vertical members (82), (92), (102) rotatably connected to the two folds of (101) and rotatably connected at the upper end to the two folds of the top plates (5), (85). ) And vertical members (82) (92)
When the top plate (5) (85) is folded in two by being passed diagonally between one of the upper and lower ends of (102) and the front and rear legs (1) (2), the front and rear legs (1) ( 2) A workbench having a pair of oblique members (83), (93), and (103) that move so as to approach each other. 6. At the lower end of the vertical members (82) (92) (102), two bent portions of vertical members (82) (92) (102) and horizontal members (81) (91) (101) are provided. 6. The work table according to claim 5, further comprising vertical guide members (84), (94), and (104) for guiding the connecting portion so as to be vertically movable and restricting both ends of the movement. 7. Each diagonal member (83) is foldably folded in an inverted V-shape between the upper end of the vertical member (82) and the front and rear ends of the horizontal member (81). Board (85) and horizontal member (81)
7. The work table according to claim 5, wherein each of the work tables can be folded in a V-shape. 8. Each of the oblique members (93) is extendable and contractable,
The upper end is rotatably connected to the upper end of the vertical member (92), and the lower end is rotatably connected to the front and rear ends of the horizontal member (91) .The top plate (5) and the horizontal member (91) 7. The work table according to claim 5, wherein the work table can be folded in an inverted V-shape. 9. Each of the oblique members (103) is foldably folded in an inverted V-shape between the lower end of the vertical member (102) and the upper ends of the front and rear legs (1) and (2). , Top plate (5) and horizontal member (101)
7. The work table according to claim 5, wherein each of the work tables can be folded in an inverted V-shape. 10. A pair of front and rear legs (1) and (2) comprising left and right columns (3) and at least one step bar (4) held therebetween, and a pair of front and rear legs (1) and (2). Non-foldable top plate (113) that is passed between the upper ends and is rotatably supported on the upper ends of the front and rear legs (1) and (2), and ensures stability during work And a front and rear leg connecting means for enabling folding after the work is completed, wherein the front and rear leg connecting means comprises a first oblique member which is extended in an X-shape between the front and rear legs (1) and (2). (1
11) and a second oblique member (112). The first oblique member (111) can be folded in two in a V shape, and the second oblique member (112).
It is said that it is impossible to fold it in two, and the top plate (113) is
(2) The work characterized in that the two bent portions of the first diagonal member (111) and the lower end of the second diagonal member (112) approach each other when rotated with respect to (2). Stand. 11. A top plate provided at the upper end of each leg (1) (2)
The front and rear top plate receiving bar (6) for receiving the front and rear end portions of (5) is further provided, and the contour shape of the front and rear end portions of the top plate (5) has a convex arc shape when viewed from the left and right directions, Top surface of the baking tray (6)
(6a) is formed in a concave arc shape when viewed from the left and right directions, and the front and rear ends of the top plate (5) are guided to the top plate receiving bar (6) when folded. 10 workbench. 12. A connecting bracket (7) for rotatably connecting the upper ends of the left and right columns (3) and the front and rear ends of the top plate (5) to each other, wherein the connecting bracket (7) comprises: A mounting part (61) for the support fixed to the upper end of the support (3), a cover (62) connected to the mounting part (61) for the support and covering the upper end surface of the support (3), and a cover
A mounting portion (63) for a top plate, which is connected to the left and right sides of the top plate (5) and is rotatably connected to the top plate (5).
Worktable of ~ 10. 13. A top receiving tray (6) and a predetermined step (4).
The storage metal fittings (9) with which the front and rear corresponding ones engage at the end of folding are provided respectively.
Workbench.