JP2005290763A - Handrail member for portable work bench - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a convenient handrail member easily mounted to an existing work bench while easily opening/closing an open face on the lifting side in either case of a portable work bench of a type with a top plate extending between facing main legs of ladder shape or a type with a footboard provided at the upper parts of main legs facing inclined in truncated chevron shape, or in the case of being used independently or used in combination with a plurality of members. <P>SOLUTION: This handrail member is mounted to the portable work bench, wherein the top plate 2 is provided at the upper parts of the main legs 1, and a lifting face 9 to the top plate 2 is formed as an open face, while a projecting member such as an auxiliary handrail 3 is provided on the non-lifting face side. The handrail member 6 is formed in bar shape and mounted to the projecting member rotatably in a horizontal direction to open/close the lifting face 9 to the top plate 2. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a portable work table used for construction work sites, interior / exterior work such as ceilings and wall surfaces of buildings, electrical wiring work, and the like.

  There are various types of such portable worktables. For example, as shown in FIG. 10, there is one in which a top plate 2 is spanned between opposing ladder-shaped main legs 1, and this type is shown in FIG. As shown in FIG. 11, a plurality can be connected in the vertical and horizontal directions to form a stage.

  When such a portable worktable is used, a rectangular frame-shaped auxiliary handrail 3 is attached to the side portion in the length direction of the top plate 2 in order to prevent falling when working on the top plate 2. Yes. However, since the elevating surface side from the main leg 1 which is the wife side of the top plate 2 hinders elevating, usually no fall prevention means such as a handrail is provided.

  In addition, when using as a stage as shown in FIG. 12, the frame-shaped auxiliary handrails 21 and 22 may be attached to the end part of the wife side where a big open surface is formed as needed. The auxiliary handrail 21 has a gate shape, and the auxiliary handrail 22 has a square shape.

  In addition, as shown in FIG. 13, there is a portable work table in which the main leg 1 is inclined and opposed to a C shape, and a tread plate 4 is provided on the upper part of the main leg 1, and two portable work tables are provided at intervals. In some cases, the top plate 2 is disposed between them so that they face each other.

  Also in the portable work table of the type as shown in FIG. 13, in order to prevent the top plate 2 from falling from the side in the length direction, the same as that shown in FIGS. However, in this case, since the main leg 1 is inclined, a gap is generated between the main leg 1 and the auxiliary handrail 3, and from this gap, the main leg 1 is inclined. There is a risk of falling.

  Therefore, in the case of the portable work table of the type shown in FIG. 13, the side bars are attached obliquely corresponding to the inclination of the main leg 1 without using the rectangular frame-shaped auxiliary handrail 3. An auxiliary handrail 23 formed in a trapezoidal frame is separately prepared and attached.

  The prior art is generally performed by those skilled in the art, and is not related to a known invention.

  As shown in FIGS. 10 and 11, when the handrail is not attached to the lifting surface side, the risk of falling is naturally large. In addition, if the auxiliary handrails 21 and 22 are attached to the open surface side as shown in FIG. 12, the fall can be prevented. However, in order to close the large open surface, two different types of auxiliary handrails 21 and 22 are required, and the attachment work is performed. Has time and effort. For this reason, it is difficult to use the auxiliary handrails 21 and 22 as open surfaces on the lifting surface side.

  Further, separately preparing a special auxiliary handrail 23 as shown in FIG. 13 is costly and inventory management is not easy.

  The object of the present invention is to eliminate the disadvantages of the conventional example described above, such as a type in which a top plate is spanned between opposing ladder-shaped main legs, or by tilting the main legs so that they face each other in a C shape. Easily open and close the open side on the lift side for any type of portable workbench with a treadle on the top, whether used alone or in combination. It is possible to provide a handrail member for a portable work table that can be easily attached to an existing work table and is easy to use.

  In order to achieve the above object, the present invention is characterized in that the top plate of the main leg is provided with a top plate, a lift surface to the top plate is formed as an open surface, and a handrail is provided on the non-lift surface side. A handrail member attached to a portable work bench provided with a projecting member, wherein the handrail member is formed in a bar shape, and the handrail member can be rotated in a horizontal direction so as to open and close a lifting surface to the top plate. The gist is that it is attached to the protruding member.

  According to a second aspect of the present invention, the handrail member is rotatably attached to an angle setting bracket that is fixed to a mounting bracket that can be attached to a protruding portion such as an existing handrail disposed on the non-elevating surface side. This is the gist.

  The gist of the invention described in claim 3 is that the angle setting metal fitting includes a locking pin capable of fixing the handrail member at a predetermined angle and a plurality of notches formed at different angles.

  According to the first aspect of the present invention, since the bar-shaped handrail member is rotatably attached to the protruding member such as the handrail on the non-elevating / lowering surface side provided in the existing portable workbench, it is rotated. Thus, the lifting surface can be easily opened and closed, and the danger of falling from the lifting surface side can be easily avoided with a simple structure and operation.

  According to the second aspect of the present invention, the handrail member can be easily attached to the existing protruding member by the mounting bracket, and the mounting angle can be easily changed by the angle fixing bracket, so that the lifting surface can be easily opened and closed. .

  According to the third aspect of the present invention, a handrail member is desired by a simple operation of selecting any one of a plurality of notches formed at different angles and locking a locking pin in the notches. Can be fixed at any angular position.

  As described above, the handrail member of the portable workbench of the present invention is of a type in which a top plate is spanned between opposing ladder-shaped main legs, or the main legs are inclined to face each other in a C shape, A portable workbench of the type that has a footboard on the upper part of the main leg 1, which can be easily used as a projecting member in either case, when used alone, or when used in combination. It can be easily opened and closed to open and close the open surface, prevent falling from the open surface and improve safety, and can be easily mounted on an existing work table.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 is a perspective view showing an embodiment of a handrail member of a portable workbench according to the present invention. The portable workbench has a structure between ladder-shaped main legs 1 and 1 arranged facing each other with a gap therebetween. A rectangular frame-shaped auxiliary handrail 3 formed by a combination of a horizontal beam 3a and a vertical beam 3b is erected on the side of the top plate 2 in the longitudinal direction. A handle bar 5 is erected on both sides of the top side of the top plate 2, which is the side of the ascending / descending surface to the top plate 2.

  In the portable work table having such a structure, the bar-shaped handrail member 6 is attached to the upper corner of the auxiliary handrail 3, that is, the intersection of the horizontal beam 3a and the vertical beam 3b so as to be rotatable in the horizontal direction. The length of the bar-shaped handrail member 6 is substantially equal to the length of the top plate 2 in the width direction, that is, the opening width of the elevating surface 9 from the main leg 1 to the top plate 2.

  The means for attaching the handrail member 6 to the opening surface 9 includes an attachment fitting 8 for fixing an upper corner portion of the auxiliary handrail 3 and an angle setting fitting 7 attached to the upper portion of the attachment fitting 8.

  As shown in FIGS. 3 to 6, the angle setting metal fitting 7 includes planar semicircular angle setting plates 10 a and 10 b arranged at intervals above and below the width of the bar-shaped handrail member 6. And three slits 11a, 11b, and 11c are formed at intervals of 90 degrees on the periphery of the arc-shaped portions of the angle setting plates 10a and 10b.

  Then, the end of the bar-shaped handrail member 6 is inserted between the upper and lower angle setting plates 10a and 10b so as to be rotatable in the horizontal direction.

  Further, a fixing pin 12 is erected between the upper and lower angle setting plates 10a and 10b near the linear portions of the angle setting plates 10a and 10b, while the handrail member 6 is selected as the slits 11a, 11b and 11c. A locking pin 13 that is detachably inserted is erected, a long hole 14 through which the fixing pin 12 is inserted in the vertical direction is formed, and a spring 15 is provided between the fixing pin 12 and the locking pin 13. Armed. The length of the long hole 14 is formed substantially equal to the length of the slits 11a to 11c.

  Thereby, the handrail member 6 is slidable by the length of the long hole 14, and the angle setting bracket is rotatable along the arcuate portions of the angle setting plates 10a and 10b with the position of the fixed pin 12 as the central axis. 7 is attached. In the example shown in FIG. 5, two slits 11a and 11b are formed at intervals of 90 degrees.

  As shown in FIGS. 5 to 9, the mounting bracket 8 includes a main body portion 16 fixed to the horizontal rail 3 a and the vertical rail 3 b of the auxiliary handrail 3, and a fixing piece 17 fixed to the vertical rail 3 b. As shown in FIGS. 7 to 9, 16 is an L-shaped hook portion 16a that is locked so as to cover the upper surface of the horizontal rail 3a, and is continuously suspended below and fitted into the side portion of the vertical rail 3b. And a U-shaped locking portion 16b.

  The fixed piece 17 is formed in a plane L shape, and is provided on one end of the locking portion 16b so as to be rotatable on a mounting piece 16c projecting at right angles to the outside. Are arranged in parallel with the vertical beam 3b, and this piece is in sliding contact with the side surface of the vertical beam 3b.

  Next, a method of attaching the handrail member 6 to the upper corner portion of the auxiliary handrail 3 using the mounting bracket 8 and the angle setting bracket 7 will be described. First, the mounting bracket 8 is attached to the auxiliary handrail 3. The locking portion 16b is applied to the side of the vertical rail 3b, the hook portion 16a is placed on the upper surface of the horizontal rail 3a, and in this state, the fixing piece 17 is attached to the vertical rail 3b. Rotate in the direction and slidably contact the side of the vertical rail 3b. As a result, the vertical rail 3b is sandwiched between the fixed piece 17 and the locking portion 16b, and at the same time, the upper rail 3a is pressed by the hook portion 16a, and the mounting bracket 8 is attached to the auxiliary handrail 3. Fixed.

  On this mounting bracket 8, the angle setting bracket 7 to which the handrail member 6 is mounted is fixed. Accordingly, the handrail member 6 is attached to the auxiliary handrail 3 so as to be rotatable by 180 degrees, and is disposed on the elevating surface 9 to the top plate 2 so as to be opened and closed.

  And in order to prevent the elevating surface 9 from being closed by the handrail member 6 as shown in FIG. 1 in order to prevent the top plate 2 from falling from the end portion, in FIG. If the state 13 is inserted, the handrail member 6 is arranged in a direction orthogonal to the auxiliary handrail 3 (position of 90 degrees), and the elevation surface 9 is closed.

  In order to pass through the lifting surface 9 when moving up and down to the top plate 2, if the handrail member 6 is held and pulled in the length direction against the elasticity of the spring 15, the locking pin 13 comes out of the slit 11 b. At this time, since the handrail member 6 moves outward by the length of the long hole 14, the locking pin 13 attached to the handrail member 6 also moves outward by that much along the slit 11b.

  Therefore, if the handrail member 6 is rotated in the direction of the slit 11a or the slit 11c with the fixed pin 12 as the central axis and the locking pin 13 is inserted into the slit 11a or the slit 11c using the elasticity of the spring 15, the handrail The member 6 is locked at a position of 0 degrees or 180 degrees with respect to the auxiliary handrail 3 and is superposed inside the auxiliary handrail 3 in parallel, or is disposed on the outer extension of the auxiliary handrail 3. In this state, the lift surface 9 is removed and the lift surface 9 is opened.

  In order to descend from the top plate 2 to the main leg 1 in this manner, the handrail member 6 is rotated by the reverse operation to the above after the handrail member 6 is opened at a position of 180 degrees and passes through the opened lifting surface 9. Then, the handrail member 6 can be returned to the 90 degree position, and the elevating surface 9 can be closed again. Further, when climbing on the top plate 2, the handrail member 6 is rotated to a position of 0 degree or 180 degrees to open the elevating surface 9, and when it is placed on the top plate 2, the handrail member 6 is rotated again. Returning to the 90 degree position, the elevating surface 9 is closed to be a member that prevents the top plate 2 from falling off.

  In addition, the formation part of a slit is not limited to the above 90 degree | times intervals, It can set to arbitrary angles.

  FIG. 2 also shows a portable work table in which the main leg 1 is inclined and opposed to a C shape, and a tread plate 4 is provided on the upper part of the main leg 1, and the two portable work tables are opposed to each other at intervals. In such a case, the top plate 2 is disposed and used. In such a case, the auxiliary handrail 3 similar to that used in the example of FIG. Further, the handrail member 6 is attached to the auxiliary handrail 3 with the attachment fixing 8 and the corner setting metal fitting 7 in the same manner as described above.

  In this case, since the main leg 1 is inclined, a large gap 18 is formed between the end of the auxiliary handrail 3 and the upper part of the main leg 1, but the handrail member 6 is 180 degrees with respect to the auxiliary handrail 3. The handrail member 6 is interposed in the portion of the gap 18 by disposing it at the position. Therefore, the fall from the gap 18 can be prevented.

It is a perspective view which shows an example of embodiment of the handrail member of the portable worktable of this invention. It is a perspective view which shows the other example of embodiment of the handrail member of the portable worktable of this invention. It is a perspective view of the angle setting metal fitting which is the principal part which shows embodiment of the handrail member of the portable worktable of this invention. It is a top view of the angle setting metal fitting which is the principal part which shows embodiment of the handrail member of the portable worktable of this invention. It is explanatory drawing of the attachment state to the auxiliary handrail of the angle setting metal fitting which is the principal part which shows embodiment of the handrail member of the portable worktable of this invention, and an attachment metal fitting. It is a front view of the attachment state to the auxiliary handrail of the angle setting metal fitting which is the principal part which shows embodiment of the handrail member of the portable worktable of this invention, and an attachment metal fitting. It is a perspective view of the mounting bracket which is the principal part which shows embodiment of the handrail member of the portable worktable of this invention. It is a front view of the attachment state to the auxiliary handrail of the mounting bracket which is the principal part which shows embodiment of the handrail member of the portable worktable of this invention. It is a side view of the attachment state to the auxiliary handrail of the mounting bracket which is the principal part which shows embodiment of the handrail member of the portable worktable of this invention. It is a perspective view which shows an example of the handrail member of the conventional portable worktable. It is a perspective view which shows the other example of the handrail member of the conventional portable worktable. It is a perspective view which shows the further another example of the handrail member of the conventional portable worktable. It is a front view which shows the example of the handrail member at the time of mounting a top plate between the treads of the several portable worktable provided with the conventional tread.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Main leg 2 Top plate 3 Auxiliary handrail 3a Horizontal rail 3b Vertical rail 4 Footboard 5 Hand rod 6 Handrail member 7 Angle setting bracket 8 Mounting bracket 9 Lifting surface 10a, 10b Angle setting plate 11a, 11b, 11c Slit 12 Fixing pin 13 Stop pin 14 Long hole 15 Spring 16 Body portion 16a Hook portion 16b Locking portion 16c Attachment piece 17 Fixed piece 18 Clearance 21, 22, 23 Auxiliary handrail

Claims (3)

  A handrail member attached to a portable work table provided with a top plate on the upper part of the main leg, a lifting surface to the top plate formed on an open surface, and a protruding member such as a handrail provided on the non-lifting surface side, A handrail member for a portable work table, wherein the handrail member is formed in a bar shape, and the handrail member is attached to the projecting member so as to be rotatable in a horizontal direction so as to open and close a lifting surface to the top plate.   2. The handrail member is rotatably attached to an angle setting bracket that is fixed to a mounting bracket that can be attached to a protruding portion such as an existing handrail disposed on the non-elevating surface side. The handrail member of the portable worktable as described.   The said angle setting metal fitting is provided with the some notch formed in the different angle from the latch pin which can fix a handrail member to a predetermined angle, The portable worktable of Claim 1 or Claim 2 characterized by the above-mentioned. Handrail member.

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