JPH11152893A - Hand hold mounting device for folding working table - Google Patents

Abstract

PROBLEM TO BE SOLVED: To store a working table together with a handhold in a compact manner by mounting the handhold rising on the side edge of a top plate for the folding working table with sufficient mounting strength to ensure support of a worker, if holding the handhold, with high safety and holding the hand hold in a falling condition at the side edge of the top plate with simple operation when the working table folds. SOLUTION: A handhold mounting setting 20 with a vertical engagement recess 21 and a horizontal engagement recess 22 is mounted at the side edge of a working top plate 2 for a folding working table 1 and a handhold mounting cylinder 30 with an engagement protrusion 31 is applied and locked to the lower end 11a of a handhold 11 so that the setting 20 and the handhold 11 with the mounting cylinder 30 can be joined together via a screw rod 35 with a handle. The engagement protrusion 31 of the mounting cylinder 30 is fitted to the vertical engagement recess 21 of the setting 20 in the condition that the handhold 11 rises and the engagement protrusion 31 is fitted into the horizontal engagement recess 22 of the setting 20 in the condition that the handhold 11 falls along the side edge of the top plate.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a handlebar mounting device for a folding workbench.

[0002]

2. Description of the Related Art Conventionally, in a folding work table, a pole-like gripping bar (cue bar) which is gripped by an operator to support the body is erected on a side edge of a scaffold plate at the top of the work table, that is, a work top plate. The mounting in the form has already been done. When the workbench was folded, the handle was removed from the top of the workbench in order to store it compactly.

[0003]

However, in the case of the foldable work table, when the work table is folded, the gripping bar must be removed from the work top plate, which is troublesome and troublesome. There was a problem that the grip bar had to be stored together with the work table, and its management was troublesome. In addition, since the gripping rod is gripped by the worker to support the body, it must have sufficient mounting strength when standing upright on the side edge of the top plate. Increasing the degree of tightening of the rod caused a contradictory problem that the removal operation became difficult.

SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned problems of the prior art, and when the gripping rod stands upright on the side edge of the tabletop of the worktable, its mounting strength is sufficiently large, and the operator can use the gripping rod. It is very safe because it can support the body even if it is grasped, and when folding the work table, it is easy to hold the grip bar on the side edge of the top plate with a simple operation An object of the present invention is to provide a handlebar mounting device for a foldable worktable which can be stored in a compact manner together with a handlebar, and which has a simple structure and can be manufactured at low cost.

[0005]

Means for Solving the Problems and Effects of the Invention In order to achieve the above object, a gripping bar mounting device in a foldable worktable according to the present invention is provided on a side edge of a work top plate of the foldable worktable. A gripping bar to be mounted, a gripping bar mounting base fixed to a side edge of the top plate and having at least one vertical engagement recess and one horizontal engagement recess, and a lower end of the gripping bar. A gripping rod mounting cylinder having at least one engaging projection protruding toward the pedestal side and a threaded rod with a handle connecting the pedestal and the gripping rod with the mounting cylinder to each other; In the upright state, the engaging projection of the mounting cylinder is fitted into the vertical engagement recess of the pedestal, and in the falling state along the top plate side edge of the grip bar, the engaging projection of the mounting cylinder is horizontal to the pedestal. That is to be fitted into the It is characterized in.

According to the gripping rod mounting device of the present invention, when the gripping rod stands on the side edge of the work top plate, the engaging projection of the mounting cylinder at the lower end of the gripping rod has the vertical engagement on the pedestal side. The mounting cylinder at the lower end of the gripping rod is fixed to the pedestal by being screwed into the mating recess and being screwed in the forward direction (for example, clockwise) of the threaded rod with the handle, and the gripping rod with the mounting cylinder is inserted through the pedestal. It is firmly attached to the top plate side edge in an upright state.

Therefore, in this state, since the engaging projection of the mounting cylinder at the lower end of the gripping bar and the pedestal are firmly engaged with each other, the mounting strength of the gripping bar is extremely high, and the worker supports the body. Even if you grab, the grip stick does not shake,
It can fully fulfill its function.

Next, for example, when the workbench is folded down, the grip bar is turned down along the side edge of the top plate, and the screw bar with the handle is turned in the opposite direction to attach the lower end of the grip bar to the pedestal. Once the fixing of the cylinder is released, the screw rod is loosened until the engaging projection of the mounting cylinder can escape from the vertical engaging recess on the pedestal side. In this state, the gripping rod with the mounting cylinder is tilted in the horizontal direction, and then the engaging projection of the mounting cylinder is fitted into the horizontal engaging recess on the pedestal side, and then the screw rod with the handle is again moved in the forward direction. To fix the grip bar with the mounting cylinder to the pedestal. Thus, the grip bar is held in a laid state along the side edge of the top plate, and the work table can be compactly stored together with the grip bar.

As described above, the operation of raising and lowering the grip bar with respect to the side edge of the tabletop of the work table is very easy, and the mounting strength of the grip bar in the standing state can be greatly increased. It is highly secure. Besides,
Since the handlebar mounting device has a simple structure, the manufacturing cost is reduced.

[0010]

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

In this specification, front and rear, left and right, and up and down are based on FIG. 2, the front means the left side of FIG. 2, the rear means the right side, and the left and right refer to the rear.
The upper part means the upper side of the figure, and the lower part means the lower side.

Referring first to FIGS. 1 and 2, the foldable work table is made of an aluminum alloy, and the work table (1) has a top plate.
(2) The side frame members having a substantially U-shaped cross section are provided on the left and right sides of the aluminum plate
(3) is attached.

A pair of gripping rods (11) are mounted on the left and right side frame members (3) of the top plate (2) by the mounting device according to the present invention.

The front edge of the top plate (2) of the work table (1) is supported by left and right inclined front supports (4) formed of rectangular pipes having a rectangular cross section, and the rear edge of the top plate (2) is It is supported by left and right inclined rear struts (5) formed of rectangular pipes having a rectangular cross section.

The left and right front supports (4) have four steps
(6) is stopped, and a top crossbar (7) is stopped between the upper ends of both front columns (4). The front support columns (4) are swingably attached to the front ends of the left and right side frame members (3) of the top plate (2) via a pair of left and right hinges (8). In addition, auxiliary legs (9) are freely connected to the lower ends of the left and right front columns (4), respectively, and these auxiliary legs (9) are attached to the lower ends of both front columns (4). The height adjustment mechanism (10) is adapted to be fixed in a state of protruding a predetermined length. Similarly, the left and right rear struts (5) are stopped by four steps of treads (6), and both rear struts (5) are
The top crosspiece (7) is suspended between the upper ends of (5). The two rear supports (5) are swingably attached to the front ends of the left and right side frame members (3) of the top plate (2) via a pair of left and right hinges (8). In addition, auxiliary legs (9) are connected to the lower ends of the left and right rear columns (5) so that they can be freely moved in and out, respectively.These auxiliary legs (9) are attached to the lower ends of both rear columns (5). The height adjusting mechanism (10) is configured to be fixed in a state of protruding a predetermined length.

A bendable connecting member (18) is provided between the uppermost step beam (6) of the left and right front supports (4) and the top plate body (2a).
Is passed, and the left and right rear struts (5) are at the top step (6)
A bendable connecting member (18) is passed between the table and the top plate body (2a) .When the work table (1) is folded, the left and right front struts (4) and the left and right rear struts ( 5) can be folded under the top plate (2).

Next, the grip bar attaching device in the folding work table according to the present invention will be described in detail with reference to FIGS.

The grip bar mounting device comprises a pair of grip bars (1) attached to the left and right side edges of the work table (2) of the work table (1).
1) and a grip that is fixed to the left and right side edges of the top plate (2) and has a vertical engagement recess (21) and two horizontal engagement recesses (22). A gripping rod mounting cylinder having a rod mounting pedestal (20) and two engaging projections (31) which are put on the lower end (11a) of the gripping rod (11) and project toward the pedestal (20).
(30) and grip bar (11) with each pedestal (20) and mounting cylinder (30)
And a threaded rod (35) with a handle for connecting them to each other.

As shown in detail in FIGS. 2, 3 and 5, the two vertical engaging recesses (21) and the two horizontal engaging recesses (22) of the pedestal (20) are viewed from the side. The pedestal (20) has a square projection (17) at the center of the pedestal (20) when viewed from the side. The peripheral side surface (17a) of the projection (17) is formed as a tapered surface tapering toward the top surface (17b).

The facing surface (31a) of the two engaging projections (31) of the gripping rod mounting cylinder (30) gradually becomes closer from the tip of the projection (31) toward the mounting cylinder (30). The slope is approaching.

As shown in detail in FIG. 6, each grip bar (1
At the lower end (11a) of (1), a pair of threaded rod insertion holes (12) that open toward the left or right edge of the top plate (2) is provided, A pair of rivet insertion holes (13) is provided on both upper and lower sides of the screw rod insertion hole (12).

Two engaging projections (31) of the gripping rod mounting cylinder (30)
The pedestal (20) extends in the longitudinal direction of the cylindrical body (30).
Side, and the cylindrical body (3
A flat surface (32) extending in the longitudinal direction of (0) is provided. A pair of threaded rod insertion holes (33) are provided between the two engaging projections (31) at the middle part of the height of the cylindrical body (30) and on the flat surface (32) opposed thereto. A pair of rivet insertion holes (34) on the upper and lower sides of the screw rod insertion holes (33) on the flat surface (32).
Is provided.

The lower end portion (11a) of the gripping rod (11) is fitted with a gripping rod mounting cylinder (30), and the threaded rod insertion hole (33) of the cylindrical body (30) and the lower end of the gripping rod (11). With the threaded rod insertion holes (12) of (11a) aligned with each other, the rivet insertion hole (1) of the grip bar lower end (11a) is inserted through the pair of rivet insertion holes (34) on the cylinder (30) side.
The blind rivet (38) is inserted through 3) and its tip is enlarged and deformed, so that the lower end of the gripping rod (11a)
A gripping rod mounting cylinder (30) is fixed to the arm.

A grip bar mounting pedestal (20) is fixed to left and right side frame members (3) of the top plate (2), and a grip bar mounting pedestal mounted on one of the right frame members (3) is provided. The pedestal (20) will be described below. That is, a screw rod insertion hole (1) is formed in a portion near the front end of the vertical wall (3a) of the right side frame member (3) having a substantially
6) are provided, and four rivet insertion holes (15) are provided at an angle of 45 ° up, down, left and right with respect to the screw rod insertion hole (16).

Correspondingly, a screw rod insertion hole (23) is provided in the center of the grip bar mounting pedestal (20) which is rectangular as viewed from the side. A nut receiving recess (24) is provided in the center rear surface of the pedestal (20), and the nut (37) is non-rotatably stored in the recess (24). On both upper and lower edges of the pedestal (20),
A projecting edge (25) is provided on the side of the side plate member (3) of the top plate (2), and rivet insertion holes (26) are provided at four corners of the pedestal (20).

On the outer surface of the vertical wall portion (3a) of the right side frame member (3) near the front end, a gripping bar mounting pedestal (20) is attached to the upper and lower convex edges (25) of the side frame member (3). ), So that the screw rod insertion hole (23) in the center of the pedestal (20)
Are inserted into the screw rod insertion holes (17) on the side of the side frame member vertical wall (3a), and rivet insertion holes (26) at the four corners of the pedestal (20) are inserted into the side frame member vertical wall (3).
The four blind rivets (14) with countersunk heads, which are aligned with the four rivet insertion holes (15) on the a) side and inserted from the four rivet insertion holes (26) on the pedestal (20) side, are perpendicular to the side frame member. The pedestal (20) is firmly fixed to the side frame member (3) by being inserted into the rivet insertion holes (15) on the wall portion (3a) side and the tip portions thereof being enlarged and deformed.

According to the grip bar mounting device of the present invention,
In a state in which the grip bar (11) stands upright on the side edge of the work top plate (2) (see FIG. 1), as shown in FIGS. The engagement projection (31) of the base (30) is fitted into the vertical engagement recess (21) on the pedestal (20) side. At this time, the inclined opposing surfaces (31a) of the two engaging projections (31) of the mounting cylinder (30) correspond to the tapered peripheral side surfaces (1) of the projection (17) at the center of the pedestal (20).
7a) and the top surface of the convex part (17) in the center of the pedestal (20)
(17b) is not in contact with the outer wall surface of the mounting cylinder (30) facing the same (see FIG. 5).

In this state, a screw rod (35) with a handle (36)
By screwing in the positive direction of (for example, clockwise), the tip (35a) of the screw rod (35) is screwed into the nut (37) of the recess (24) on the back of the center of the pedestal (20), Mounting cylinder (3
0) is fixed to the base (20). The tip of the threaded rod (35a)
By screwing the nut and nut (37) together,
The inclined facing surface (31a) of the two engaging projections (31) is pressed against the tapered peripheral side surface (17a) of the projection (17) at the center of the pedestal (20), but the outer surface of the mounting cylinder (30) is pressed. The wall surface does not come into contact with the top surface (17b) of the projection (17) at the center of the pedestal (20), and therefore, the mounting cylinder (30) is fixed to the pedestal (20) without rattling, and the mounting cylinder ( The grip bar (11) with 30) is firmly attached to the side edge of the top plate (2) in an upright state via the pedestal (20).

Therefore, in this state, the lower end of the gripping rod (11a)
The mounting cylinder (30) is firmly connected to the pedestal (20), so the mounting strength of the grip bar (11) is very large, and even if the operator grips to support the body, the grip bar (11) Can fully perform its function without shaking.

Then, for example, when the work table is folded, as shown by a two-dot chain line in FIG.
Turn the screw bar (35) with the handle (36) in the opposite direction so that the handle bar (36)
(11) The fixing of the mounting cylinder (30) at the lower end is once released, and the engaging projection (31) of the mounting cylinder (30) is turned into the vertical engagement recess (2) on the pedestal (20) side.
1) Loosen the screw rod (35) until it can escape. In this state, the engaging projection (31) of the mounting cylinder (30) is disengaged from the vertical engagement recess (21) on the pedestal (20) side, and the gripping rod with the mounting cylinder (30) is
(11) is tilted in the horizontal direction, and then the engaging projection (31) of the mounting cylinder (30) is fitted into the horizontal engaging recess (22) on the pedestal (20) side, and then the handle ( 36) Turn the threaded rod (35) in the forward direction to fix the mounting cylinder (30) at the lower end of the gripping rod (11a) to the pedestal (20), and then use the gripping rod (11) with the mounting cylinder (30). ) Is fixed via the pedestal (20) in a lying state along the side edge of the top plate (2). Thereby, the work table (1) can be stored compactly together with the grip bar (11).

When the screw rod (35) is loosened, the length of the screw rod (35) must be sufficiently long so that the tip (35a) does not fall off the nut (37) on the back of the pedestal (20). It is desirable to be.

When the work table (1) is reused, the grip bar (1
In order to raise 1), the operation may be performed in the reverse order of the above. That is, the threaded rod (3
5) is turned in the opposite direction to once release the fixation of the gripping rod (11) with the mounting cylinder (30) to the pedestal (20), and the engaging projection (31) of the mounting cylinder (30) is Loosen the screw rod (35) until it can escape from the horizontal engagement recess (22) on the 20) side. In this state, the mounting cylinder
Raise the grip bar (11) with the (30), and this time, the mounting cylinder (30)
Into the vertical engagement recess (21) on the pedestal (20) side, and then turn the screw rod (35) with the handle (36) in the forward direction again to attach the mounting cylinder. The grip bar (11) with (30) is fixed to the side edge of the top plate via the pedestal (20) in an upright state.

As described above, the operation of raising and lowering the grip bar (11) with respect to the side edge of the top plate (2) of the work table (1) is very simple, and the mounting of the grip bar (11) in the upright state. The strength can be made very high, and it is very safe.

In the illustrated embodiment of the present invention, the grip bar (11) is made of a round pipe.
May have other shapes such as a polygon, an ellipse, etc., and may be solid, not hollow. Correspondingly, the cross-sectional shape of the gripping rod mounting cylinder (30) can also be an appropriate shape that can fit the lower end (11a) of the gripping rod (11).

In the illustrated embodiment, a pair of grip bars (11) are attached to the left and right side edges of the top plate (2).
It is sufficient that at least one (11) is attached to the side edge of the top plate (2). The grip bar mounting pedestal (20), the grip bar mounting cylinder (30), and the threaded bar with handle (35) are provided corresponding to each grip bar (11).

As shown in the drawing, a pedestal (20) for grip bar mounting
The vertical engagement recess (21) and the horizontal engagement recess (22) are provided two by two, and the vertical engagement recess (21) and the horizontal engagement recess (22) are viewed from the side. The convex portion (17) having a tapered peripheral surface (17a) is formed at the center of the pedestal (20) at the positions constituting the four sides of the square, while the grip bar mounting cylinder (30) is formed. ) Are provided with two engaging projections (31) extending in the longitudinal direction of the cylindrical body (30), and the opposing surfaces (31a) of the two engaging projections (31) are formed from the tip of the projection (31). An inclined surface that gradually approaches the mounting cylinder (30) side is provided so that the mounting cylinder (30) at the lower end of the grip bar (11) is fixed to the pedestal (20) without looseness. ,desirable. However, pedestal (20)
At least one vertical engaging recess (21) and one horizontal engaging recess (22) are provided, and at least one engaging protrusion (31) of the gripping rod mounting cylinder (30) is also provided. When the grip bar (11) is in the upright position, the engaging projection (31) of the mounting cylinder (30) is fitted into the vertical engagement recess (21) of the pedestal (20), and the top plate of the grip bar (11) is inserted. In the lying state along the side edge, the engagement projection (31) of the mounting cylinder (30) may be fitted into the horizontal engagement recess (22) of the pedestal (20). .

[Brief description of the drawings]

FIG. 1 is a perspective view of a folding workbench showing an embodiment of the present invention.

FIG. 2 is an enlarged vertical cross-sectional view of a grip bar attaching device attached to the work table.

FIG. 3 is an enlarged sectional view of a main part taken along line AA of FIG. 2;

FIG. 4 is an enlarged sectional view of a main part along line BB in FIG. 2;

FIG. 5 is an enlarged sectional view of a main part of FIG. 3;

FIG. 6 is an exploded perspective view of the grip bar attaching device attached to the work table.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Foldable work table 2 Work top plate 11 Grip bar 11a Lower end 20 Grip bar mounting pedestal 21 Vertical engagement recess 22 Horizontal engagement recess 31 Engagement protrusion 30 Grip bar attachment cylinder 35 Screw rod 36 Handle

Claims (1)

[Claims] 1. A handle bar (11) attached to a side edge of a work top plate (2) of a foldable work table (1), and a vertical and fixed to the side edge of the top plate (2). A grip bar mounting pedestal (20) having at least one engaging recess (21) and at least one horizontal engaging recess (22); and a lower end (11a) of the grip bar (11). At least one engagement projection protruding toward the pedestal (20)
(31), a handlebar mounting cylinder (30) having a handlebar and a threaded rod (35) with a handle connecting the grippers (11) with the pedestal (20) and the mounting cylinder (30) to each other, When the grip bar (11) is in the upright position, the engaging projection (31) of the mounting cylinder (30) is fitted into the vertical engagement recess (21) of the pedestal (20), and the top plate of the grip bar (11) is inserted. In the lying state along the side edge, the engaging projection (31) of the mounting cylinder (30) is
A grip bar mounting device for a folding workbench, which is adapted to be fitted into the horizontal engaging recess (22) of (20).