JP2007205009A - Workbench - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a foldable and height adjustable workbench that can be built up in a reliable manner with extremely simple operation. <P>SOLUTION: The workbench having a lateral pair of top plates 1 with the tips connected to each other is provided with a base 2 in a facing manner below the connected position of the top plates 1. Vertical pipes 4 are mounted on the base 2, and upper pipes 5 are liftably fitted in the vertical pipes 4 to form a post frame 6. An upper end 7 of the post frame 6 and side parts 8 of the top plates 1 are provided with connecting metal fittings 9 for stopping the pair of top plates 1 in a folded position and a horizontal position, while the base ends of lower frames 15 of opening/closing leg frames 14 laterally opened/closed around the post frame 6 serving as an axis are turnably pivoted to the right and left of the base 2, and the base ends of upper frames 16 of the opening/closing leg frames 14 are turnably pivoted to the right and left of the upper end 7 of the post frame 6. Upper pipes 18 of the upper frames 16 are liftably fitted in vertical pipes 17 mounted to the lower frames 15. Connecting frames 20 are provided for mutual connection between the upper pipes 5 and the upper pipes 18, and stoppers 22 are provided for the respective upper pipes 5, 18. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a workbench that can be reliably assembled by an extremely simple operation and can be adjusted in height.

  Conventional work tables that can be folded and adjusted in height are disclosed in Japanese Patent Laid-Open Nos. 9-137599, 2003-41767, 2004-116263, 2004-190354, and the like.

On the other hand, it has a pair of left and right top plates to which the tips are connected, and a substrate is provided in an opposing manner below the connection position of the top plate, and a vertical pipe of a support frame is attached on the substrate. A work table having a structure in which the base end portions of the lower frame frames of the left and right open / close leg frames to which the standing pipes are attached is pivotably mounted, and slide pipes are inserted into the standing pipes.
JP-A-9-137599, JP-A-2003-41767, JP-A-2004-116263, JP-A-2004-190354

  The above-mentioned commercially available worktable opens the folded left and right top plates in the horizontal direction, raises the slide pipes inserted into the respective standing pipes to an appropriate height, and provides the tip on the back of the top plate It is assembled by inserting it into the engaging part.

  However, since the slide pipes inserted into the plurality of standing pipes are pulled up one by one and the tip portions thereof are inserted into the engaging portions provided on the back surface of the top plate, this work table is not suitable for assembly at the work site. There are disadvantages such as.

  Therefore, an object of the present invention is to provide a work table that can be easily assembled at a work site and can be adjusted in height.

  In order to meet the above-mentioned purpose, the present invention has a pair of left and right top plates to which the tips are connected, and a substrate is provided oppositely below the connection position of the top plate, and a standing pipe is provided on the substrate. Attach the upper pipe to the upright pipe so that it can move up and down to form a column frame, and fold the pair of top plates to the upper end of the column frame and the side of the pair of top plates facing this Connecting brackets that stop at horizontal and horizontal positions are provided, while the lower frame frame of the open / close leg frame that opens and closes to the left and right with the support frame as an axis pivots at the base end so that the base end can be pivoted to the left and right of the board. The upper frame frame of the open / close leg frame is pivotally attached at its base end to the left and right of the upper end of the support frame, and the upper pipe of the upper frame frame is attached to the standing pipe attached to the lower frame frame. Are inserted in such a way that they can be moved up and down, and there is a connection frame between each upper pipe In connecting, even out those we propose a workbench workbench having a stopper pipe on each said.

  In this invention, one of the top plates in the folded state is opened in the horizontal direction, then the open / close leg frame is opened in the opposite direction, the upper pipe is pulled up by the connecting frame, and the upper end of the upper frame frame is connected to the back surface of the top plate. The upper pipe is fixed by a stopper, the other top plate is opened in the horizontal direction in the same manner, and then the opening / closing leg frame is opened in the opposite direction. The upper end of the upper frame frame is engaged with the engaging portion provided on the back surface of the top plate, and the upper pipe is fixed by the stopper to assemble the work table.

  That is, according to the present invention, the upper pipes of the respective opening and closing leg frames can be pulled up simultaneously by the connecting frames, so that a robust work table can be assembled by an extremely simple operation.

  In the present invention, a shock absorber may be interposed between the connecting frame and the lower frame frame in order to reduce the impact when the connecting frame is raised and lowered.

  Further, in the present invention, a first pin and a second pin projecting from the side of the top plate as connecting metal fittings, a guide hole provided at the upper end of the column frame and the first pin inserted therein, and an arcuate guide portion, If the guide groove of the second pin having a horizontal stop portion is used, the left and right top plates at the folding position can be reliably fixed to the horizontal position by an extremely simple operation.

  Further, according to the present invention, the upper pipe is provided with a locking hole at a predetermined interval as the stopper, the standing pipe is provided with an insertion hole, and the outer periphery of the insertion hole is provided with a cylinder having a lid at its tip. A lock pin having a grip portion at the tip is inserted from a key hole provided in the lid portion, a guide member is provided on the outer periphery of the lock pin, a push spring is interposed between the guide member and the lid portion, and Providing a protrusion on the outer periphery of the lock pin and using a keyhole with a keyway for the protrusion, the upper pipe that is lifted and lowered by an extremely simple operation It can be locked, and the lock can be reliably released by an extremely simple operation.

  It has a pair of left and right top plates to which the tips are connected. A substrate is provided oppositely under the top plate connection position, a vertical pipe is attached on the base plate, and the vertical pipe can be moved up and down. A pipe is inserted to form a column frame, and a connecting bracket for stopping the pair of top plates in the folded position and the horizontal position is provided at the upper end of the column frame and the side portions of the pair of top plates facing the top frame. On the other hand, the lower frame frame of the open / close leg frame that opens and closes to the left and right with the support frame as an axis pivotally attaches its base end portion to the left and right of the board, and the upper frame frame of the open and close leg frame has its base frame. The end is pivotally mounted to the left and right of the upper end of the support frame, and the upper pipe of the upper frame frame is inserted into the vertical pipe attached to the lower frame frame so that it can be raised and lowered. The pipes are connected by a connecting frame, and each upper pipe is connected. A stopper provided workbench by interposing a shock absorber between the coupling frame and the lower frame frame.

  DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail below with reference to the illustrated embodiments. Reference numerals 1, 1 denote a pair of left and right top plates to which the tips are connected, and 2, 2 denotes an opposing shape below the connecting position of the top plates 1, 1. A base plate having casters 3 in the lower portion thereof, and vertical pipes 4 and 4 are attached to the base plate 2 at predetermined intervals, and the upper pipes 5 and 5 are inserted into the vertical pipes 4 and 4 so as to be movable up and down. A support bracket 9 is formed on the upper end portion 7 of the support frame 6 and the side portions 8 and 8 of the top plates 1 and 1 opposite to the support frame 6, and the top plate 1 and 1 are stopped at the folded position and the horizontal position. Provided.

  In this embodiment, the connection fitting 9 is provided with a first pin 10 and a second pin 11 projecting from the side portion 8 and a guide hole 12 comprising a long hole which is provided in the upper end portion 7 and into which the first pin 10 is inserted. And a guide groove 13 of the second pin 11 having an arcuate guide portion 13a and a horizontal stop portion 13b.

  When the top plate 1 is in the folding position, the first pin 10 is located at one end of the guide hole 12 and the second pin 11 is removed from the guide groove 13 when the top plate 1 is in the folded position. The first pin 10 moves to the other end of the guide hole 12, the second pin 11 is guided to the guide portion 13a, and when the top plate 1 is further pushed in the horizontal position, the first pin 10 is moved to the guide hole. The second pin 11 is pushed into the stop portion 13b and the top plate 1 is fixed at the horizontal position.

  On the other hand, 14 is an open / close leg frame that opens and closes in the left-right direction with the support frame 6 as an axis, and the lower frame frame 15 of the open / close leg frame 14 pivotally attaches to the base plate 2 so that the base end portion can pivot. The upper frame frame 16 is pivotally attached at the base end thereof to the left and right of the upper end portion 7 of the support frame 6, and is further attached to the vertical pipe 17 attached to the lower frame frame 15 to the upper pipe of the upper frame frame 16. In the embodiment shown in FIG. 3, the upper pipe 1818 of the upper frame frame 16 is inserted into the upright pipes 17 and 17 attached to the lower frame frame 15 so as to be movable up and down. A caster 19 is provided at the lower end portion of the.

  Further, a connecting frame 20 is provided between the lower pipes of the upper and lower pipes 5,... And the upper pipes 18,. In addition, a buffer device 21 is interposed between the connecting frame 20 and the lower frame frame 17, and stoppers 22,... For the upper pipes 5,.

  On the other hand, in this embodiment, the stopper 22 is formed with locking holes 23,... At predetermined intervals in the upper pipe 5 and the upper pipe 18, and through holes 24 are provided in the standing pipe 4 and the standing pipe 17, respectively. A cylindrical body 26 having a lid portion 25 is provided on the outer periphery thereof, and a lock pin 29 having a gripping portion 28 is inserted into the cylindrical body 26 from a key hole 27 provided in the lid portion 25. A guide member 30 is provided on the outer periphery of the guide member, a pressing spring 31 is interposed between the guide member 30 and the lid 25, a protrusion 32 is provided on the outer periphery of the lock pin 29, and a key groove of the protrusion 32 is provided in the key hole 27. 33 is formed.

  The operation of the stopper 22 will be described. After raising and lowering the upper pipe 5 to the upper pipe 18 to an appropriate height with respect to the standing pipe 4 to the standing pipe 17, the lock pin 29 is pushed into the corresponding locking hole 23 and pushed to the spring 31. Then, the lock pin 29 is rotated 90 degrees to remove the protrusion 32 from the keyway 33 and the lock pin 29 is prevented from returning to lock the upper pipe 5 to the upper pipe 18.

  Pulling the grip portion 28 toward the front, the lock pin 29 is rotated 90 degrees in the reverse direction, and the projection 32 is inserted into the keyway 33, and the lock pin 29 is engaged with the locking hole 23 against the urging force of the push spring 31. The upper pipe 5 through the upper pipe 18 are unlocked by escaping from the insertion hole 24.

  Next, an example of the assembly process of the work table according to the present invention will be described. The lock brackets 34, 34 of the left and right top plates 1, 1 in the folded state are unlocked and the top plates 1, 1 are placed in the opposite direction. Open and lock the tops 1 and 1 in the horizontal direction.

  The right opening and closing leg frames 14 and 14 are opened in the opposite direction with respect to the right top plate 1 locked in the horizontal direction, and the left opening and closing leg frames 14 and 14 are also opened in the opposite direction for the left top plate 1.

  Next, the upper pipe 5 and the upper frame frame 16 and the upper pipe 18 of the support frame 6 are pulled up by the connecting frame 20, and the upper end portion 35 of the upper frame frame 16 is connected to the engaging portion 36 provided on the back surface of the top plate 1. The upper pipe 5 and the upper pipe 18 of the opening / closing leg frame 14 are fixed by the stopper 22.

  In this embodiment, the base end portion of the support 37 is pivotally attached to the inner side of the upper pipe 18 of the upper frame frame 16, and the locking portion 38 is provided on the back surface of the top plate 1, and is assembled as described above. The tip end portion of the support 37 is locked to the locking portion 38 and supported on the work table.

  That is, according to the present invention, since the upper pipe 5 of the left and right column frames 6 and the upper pipe 18 of the open / close leg frame 14 can be pulled up simultaneously by the connecting frame 20, a solid work table can be operated with an extremely simple operation. Can be assembled.

Moreover, in this invention, by using the connection metal fitting 9, the left and right top plates 1 and 1 in the folding position can be reliably fixed to the horizontal position by an extremely simple operation.
Fixed to.

  Furthermore, in the present invention, by using the stopper 22, the upper pipe 5 to the upper pipe 18 that are lifted and lowered by an extremely simple operation can be securely locked to the standing pipe 4 to the standing pipe 17. The lock can be reliably released by operation.

  In short, according to the present invention, a work table that can be folded and adjusted in height can be reliably assembled by an extremely simple operation.

The side view which shows the assembly state of the worktable which shows one Example of this invention Side view of the folded state in the above embodiment The side view of the state which opened the top plate and right-and-left opening-and-closing leg frame in other examples Front view Top view of the top plate used in the above embodiment Front view Side view Enlarged view of the connecting bracket used in the above embodiment Side view (a) and front view (b) of the stopper used in the above embodiment in the locked state Side view (a) and front view (b) in the unlocked state of the stopper as above.

Explanation of symbols

Reference numerals 1 and 1 are a pair of left and right top plates 2 to which the tips are connected, 2 is a base plate 4, 4 is a standing pipe 5, 5 is an upper pipe 6, a column frame 7 is an upper end 8, and 8 is a side 9.
14 is an open / close leg frame
15 is the bottom frame
16 is the upper frame
17 and 17 are vertical pipes
18 and 18 are upper pipes
20, ... are connected frames
21 is a shock absorber
22, ... is a stopper

Claims (4)

It has a pair of left and right top plates to which the tips are connected. A substrate is provided oppositely under the top plate connection position, a vertical pipe is attached on the base plate, and the vertical pipe can be moved up and down. A pipe is inserted to form a column frame, and a connecting bracket for stopping the pair of top plates in the folded position and the horizontal position is provided at the upper end of the column frame and the side portions of the pair of top plates facing the top frame. On the other hand, the lower frame frame of the open / close leg frame that opens and closes to the left and right with the support frame as an axis pivotally attaches its base end portion to the left and right of the board, and the upper frame frame of the open and close leg frame has its base frame. The end is pivotally mounted to the left and right of the upper end of the support frame, and the upper pipe of the upper frame frame is inserted into the vertical pipe attached to the lower frame frame so that it can be raised and lowered. The pipes are connected by a connecting frame, and each upper pipe is connected. Workbench which is characterized in that a stopper. 2. The work table according to claim 1, wherein a shock absorber is interposed between the connection frame and the lower frame frame. Connecting metal fittings are provided at the upper end of the first pin and the second pin and the column frame projecting from the side of the top plate, a guide hole for inserting the first pin, an arcuate guide portion, and a horizontal stop portion. The workbench according to claim 1, comprising a guide groove of a second pin. The stopper has locking holes formed at predetermined intervals in the upper pipe, an insertion hole is provided in the standing pipe, a cylindrical body having a lid portion is provided on the outer periphery of the insertion hole, and a lid portion is provided in the cylindrical body. A lock pin having a grip at the tip is inserted from the provided key hole, a guide member is provided on the outer periphery of the lock pin, a push spring is interposed between the guide member and the lid, and the outer periphery of the lock pin The work table according to claim 1, wherein a projection is provided on the keyhole, and a keyway of the projection is formed in the keyhole.

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