JP2002180658A - Worktable - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an easy-to-manufacture worktable allowing extension of legs by easy operation. SOLUTION: In this worktable, a leg extending/retracting device 40 has plural positioning holes 41 vertically formed in the retractable leg 7 side by side at prescribed intervals; a retractable leg stopper 45 provided in an lower end part of a post 5 turnably around an axis forward and rearward; a protrusion 47 provided in the retractable leg stopper 45, fitted in a prescribed positioning hole 41; and an elastic member 48 energizing the retractable leg stopper 45 to the direction to which the protrusion 47 is fitted in the positioning hole 41.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a work table,
In particular, the present invention relates to a worktable (including a stepladder) including a pair of front and rear legs having a pair of right and left columns, and a leg length can be adjusted for each column.

[0002]

2. Description of the Related Art A worktable in which a telescopic leg is slidably fitted in a lower portion of a column and whose leg length can be adjusted for each column is conventionally known. This has been done by forming a rack on the telescopic legs and engaging a stopper having a plurality of teeth with the rack.

[0003] In this type of work table, the length of the top plate and the length of the legs are almost the same so that a wide work space is secured on the top plate during use, and the front and rear legs are separated from each other during storage. There is also a folding type that can be folded in a state substantially parallel to the top plate and can be fixed in the folded state. Conventionally, in such a work table, stoppers are provided on the left and right of each leg, and when each leg is folded or extended, the left stopper is moved to the right and the right stopper is moved to the left, The leg is rotated while maintaining this state.

[0004]

In the above-mentioned conventional work table, there is a problem that it is difficult to manufacture a telescopic leg having a rack, and a problem is to simplify the operation for expanding and contracting.

Further, according to the above-mentioned conventional folding work table, when folding or extending each leg, it is necessary to move the left and right stoppers, respectively, and to rotate the leg while maintaining this state. Therefore, there is a problem that the operation is troublesome.

An object of the present invention is to provide a work table which can be easily manufactured and whose legs can be extended by a simple operation.

Another object of the present invention is to provide a work table which can be easily folded or extended by a simple operation.

[0008]

Means for Solving the Problems and Effects of the Invention A work table according to the present invention comprises an inwardly opened left and right column having a U-shaped cross section, a step crossed between the left and right columns, and a lower portion of each column. A pair of front and rear legs composed of movably fitted telescopic legs, a top plate passed over the upper ends of the front and rear legs, and projection of the telescopic legs from the columns by allowing or preventing sliding of the telescopic legs on the columns. In a workbench provided with a leg extension device for setting the amount to a required value, the leg extension device is provided with a plurality of positioning holes vertically arranged at predetermined intervals on the extension leg, A telescopic leg stopper rotatably provided on the telescopic leg, a projection provided on the telescopic leg stopper and fitted in a predetermined positioning hole, and an elasticity for urging the telescopic leg stopper in a direction in which the projection is fitted into the positioning hole. Characterized by having a member Is shall.

According to the workbench of the present invention, when the telescopic leg stopper is held and rotated against the elastic member, the projection retreats from the positioning hole, and the telescopic strut can slide.
In this state, after the telescopic strut is slid to the required length and then the hand holding the telescopic leg stopper is released, the telescopic leg stopper is urged by the elastic member and fitted into a predetermined positioning hole. Therefore, it can be used with any leg length by a simple operation. The telescopic legs can be obtained simply by post-working holes in the extruded profile, and are easy to manufacture.

The leg extension device has a stopper storage bracket which is substantially U-shaped and is fixed to the lower end of the column below the lowermost step with the openings facing each other, and penetrates the bracket in the front-rear direction. A stopper support shaft that rotatably supports the telescopic leg stopper, and a push-up lever that rotates the telescopic stopper to separate the protrusion from the positioning hole, the elastic member includes a lowermost step rail and There is a case where the coil spring is received by a spring receiver provided on the telescopic leg stopper and urges the telescopic leg stopper downward. In this case, when the push-up lever is pushed up, the extensible leg stopper rotates, and the projection is separated from the positioning hole, so that the extensible leg can slide on the support, and the extensible leg is moved to the predetermined position. Thereafter, when the push-up lever is released and the telescopic leg is slightly moved, the projection is fitted into the positioning hole and the telescopic leg is locked. Thus, adjustment and locking of the telescopic legs can be performed with a simple operation.

A mark pin urged outward in the front-rear direction is supported by the telescopic leg stopper so as to be movable in the front-rear direction, and the projection of the telescopic leg stopper is fitted into the positioning hole on the side wall of the bracket. In some cases, a through-hole that matches the position of the mark pin is provided, and it may be possible to determine whether the protrusion is just fitted into the positioning hole based on whether or not the mark pin is visible. In this case, it is difficult to see directly whether the stopper is locked because the stopper is housed in the bracket, but it is easy to check whether the mark pin is visible by checking whether the mark pin is visible You can know.

The length of the top plate is equal to or greater than the length of the column when the telescopic legs are most contracted, and the front and rear legs are foldable. The left and right ends of the column stoppers extending left and right are fitted in the long holes of the fixed side connection members corresponding to the left and right movably in the longitudinal direction of the long holes, and each leg has A movable connection member rotatably connected to each of the fixed connection members is provided at the upper left and right ends. Each of the movable connection members has a use state fixing notch that overlaps the elongated hole in the use state and a length in the folded state. The folded state fixing notch which overlaps the hole may be provided. By doing so, the front and rear legs are compactly folded such that their lower parts are overlapped with each other and substantially parallel to the top plate, and transport and storage are facilitated. Then, when changing from the use state to the folded state, pull the front support stopper with one hand to release the lock, and rotate the front leg with the other hand, so that the long hole of the fixed side connection member and the movable side The notch of the connecting member overlaps,
The pillar stoppers fit into these, and the front legs are locked. Similarly, by simply pulling the rear support stopper and rotating the rear leg, the rear leg is locked, and the work table can be easily folded and locked.

[0013] In this case, the front and rear ends of the top plate are covered with caps, and the long holes of the fixed-side connecting members are elongated vertically, and the column stoppers are directed upward between the lower wall of the cap and the column stoppers. It is preferable that a coil spring that urges the support is suspended, and the movement of the column stopper in the front-rear direction is regulated. In order to regulate the movement of the column stopper in the front-rear direction, for example, the column stopper is formed in a U-shape having a protruding edge extending left and right, and the side of the column stopper is inserted into the lower wall of the cap. Notch, at least one of the notches is L-shaped,
The side portion of the column stopper is housed in the deepened portion. This facilitates the manufacture and the folding operation.

Also, a cue bar receiver provided at the top of at least one support column and having a vertical opposing wall, a fixed horizontal shaft extending between the opposing walls of the cue bar receiver, and a lower end opposed to the cue bar receiver. A storable cue bar that is rotatably supported on a fixed horizontal axis and is housed between walls, a movable horizontal shaft that penetrates near the lower end of the cue bar, and urges the horizontal axes toward each other. An elastic member is further provided, and a notch is provided at the upper end of the clue bar receiving opposed wall at the upper end of the clue bar receiving opposing wall so as to be fitted to the movable horizontal shaft when the clue bar is used to prevent rotation of the clue bar. The lower end of the wall may be provided with a notch at the time of storage, which is fitted to the movable horizontal shaft when the cue bar is stored and prevents rotation of the cue bar. By doing so, the cue bar can be rotated by pulling the cue bar in the direction of the tip of the cue bar against the elastic force of the elastic member, and the movable horizontal shaft can be cut out when used and when it is stored. Can be used or stored. As a result, the cue rod can be used and safety can be improved, and the cue rod can be stored compactly so as not to hinder the transportation and storage of the work table.

[0015]

Embodiments of the present invention will be described below with reference to the drawings. In this specification, the front means the left of FIG. 1, the rear means the right of the figure, and the left and right refer to the rear. The upper and lower sides also refer to the use state of FIG.

The work table (1) according to the present invention comprises a top plate (2) that is long in front and back, and a pair of foldable front and rear legs (3) and (4) provided at both front and rear ends of the top plate (2). The front and rear legs (3) and (4) can be fixed in the use state shown in FIG. 1 and the folded state shown in FIG. 2, respectively.

The front and rear legs (3) and (4) have the same configuration, and include a pair of right and left columns (5), a four-step step (6) suspended between the left and right columns (5), and each column. The telescopic leg (7) is slidably fitted to the lower portion of (5), and the leg end (8) is fitted to the lower end of the telescopic leg (7). The length of the front and rear legs (3) and (4) can be adjusted for each column (5) by adjusting the amount of extension of each telescopic leg (7) as shown by the chain line in FIG. This allows the use of the workbench (1) on slopes, uneven ground, roofs, stairs, and the like. In use, the front and rear legs (3) and (4) have an opening angle greater than a right angle to the top plate (2), and the length of the front and rear legs (3) and (4) when contracted is , Which is larger than half of the front and rear length of the top plate (2). The worktable (1) is, as shown in FIG.
The front and rear legs (3) and (4) are folded so as to be substantially parallel to the top plate (2), and a plurality of worktables (1) can be stacked and stored.

Between the top plate (2) and the uppermost step (6), there is provided an opening stopper (31) that can be folded in an inverted V-shape.
The left and right supports (5) of the front legs (3) have clue bar receivers (33).
And a cue rod (32) is rotatably attached thereto. The cue bar (32) can be switched between an upright state shown by a chain line in FIGS. 1 and 3 and a stored state shown by a solid line in the same figure.

Plate-shaped fixing brackets (fixed-side connecting members) (9) and (10) are provided outside the front and rear ends of the top plate (2), and the front and rear legs (3) and (4) are provided.
At the upper end of the column (5), there are provided plate-shaped movable brackets (movable-side connecting members) (11) and (12) that are stacked on the outside of the fixing brackets (9) and (10) and are connected rotatably. Have been. As described below,
The fixed fittings (9) (10) and the movable fittings (11) (12) have slightly changed shapes before and after.

The front and rear legs (3) and (4) are adapted to be fixed both in use and in a folded state. This will be described in detail with reference to FIGS.

Each of the fixing brackets (9) and (10) has a substantially rectangular shape, and is riveted to the top plate (2) with its lower part protruding downward from the top plate (2). At the outer end of each fixing bracket (9) (10), a vertically long slot (17) (18) is provided to support the left and right extending column stoppers (13) (14) urged downward. The left and right ends are vertically movably fitted into the long holes (17) and (18) of the fixing brackets (9) and (10) corresponding to the left and right.

The front movable bracket (11) has a front part supported by a front leg (3).
The rear movable bracket (12) has a rear portion protruding forward from the column (5) of the rear leg (4) so as to protrude further rearward and is riveted to the column (5). Has been riveted.
The front movable bracket (11) is connected to the front fixing bracket (9) by a connecting pin (23) having a left-right axis so that the front movable bracket (11) can rotate around the lower protruding portion (9a) of the front fixing bracket (9). Are linked. Similarly, the rear movable bracket (12) is rotated by a connecting pin (24) having a left-right axis so that the rear movable bracket (12) is rotatable around a lower protruding portion (10a) of the rear fixed bracket (10). Connected to (10). Each of the movable brackets (11) and (12) has a notch (19) (20) for use condition fixing that overlaps the long holes (17) and (18) in the use state, and a long hole (17) (18) in the folded state. Overlapping folding state fixing notches (21) and (22) are provided.

The lower protruding portion (9a) of the front fixing bracket (9) is formed in such a size that the connecting pin (23) can be inserted therethrough. Lower protrusion (1
0a) is relatively large, and the rear connecting pin (24) is located below and relatively inward of the front connecting pin (23). Correspondingly, the forward projecting amount of the rear movable bracket (12) is made larger than the rear projecting amount of the front movable bracket (11).

The top plate (2) is made of an extruded member extending in the front-rear direction, and has upper and lower horizontal walls (25a) (25a) at the front and rear ends of the top plate (2).
U-shaped cap (25) consisting of b) and vertical wall (25c)
However, it is fixed so as to leave a gap between the front and rear ends of the top plate (2) and the cap vertical wall (25c). The gap between the front and rear ends of the top plate (2) and the cap vertical wall (25c) is covered by the outer ends of the fixing brackets (9) and (10), and the slots of the fixing brackets (9) and (10) are elongated. (17) and (18) are provided in portions that cover the gaps between the fixing brackets (9) and (10). Each of the pillar stoppers (13) (14) is formed in a U-shape having left and right protruding edges (13a) (14a), and the left and right protruding edges (13a) (14a) have fixing brackets (9) (14). 10) Slot (17)
(18). The lower portions of the column stoppers (13) and (14) are located below the lower horizontal wall (25b) of the cap (25), and the column stopper (13) is positioned on the lower horizontal wall (25b) of the cap (25). (14) Notch (26) (2
7) is provided. At the left and right ends of the lower horizontal wall (25b) of the cap (25), notches for forming a spring hook (28) are provided, and this spring hook (28) and each pillar stopper (13 A pair of left and right coil springs (15) and (16) are stretched between the left and right edges of the () and (14). In this way, each of the column stoppers (13) can move up and down without being interfered with the top plate (2) and constantly urged upward.

One of the notches into which the side portions of the column stoppers (13) and (14) are inserted (the left one) (27) is L
One of the side portions of the column stoppers (13) and (14) is inserted through the deepened portion of the L-shaped notch (27), so that the column stoppers (13) and (14) Movement in the front-rear direction is restricted. The pillar stoppers (13) and (14) are two rods
(29) are formed by connecting the channel members (30) with each other. In this case, the connection by the channel members (30) is performed by forming the portions corresponding to the side portions of the column stoppers (13) and (14) into an L-shape. This is performed after the notch (27) is inserted through the widened portion.

Notch for fixing use condition in front leg part
(19) is provided on the upper surface of the column (5) of the front movable bracket (11) slightly behind the upper end, and the notch (21) for fixing the folded state is the front movable bracket (11). Is provided on the rear surface of the lower part. The bottom surfaces of these notches (19) and (21) are located on the same circumference around the axis of the connecting pin (23), and the angle formed by these notches (19) and (21) is open. Adjusted to the leg angle. The surface (11a) of the front movable bracket (11) between the notches (19) and (21) has an arc shape centered on the axis of the connecting pin (23). Similarly, in the rear leg portion, the use state fixing notch (20) is provided on the upper surface of the rear movable bracket (12) slightly forward from the upper end of the column (5), and is in the folded state. The fixing notch (22) is provided on the lower front surface of the rear movable bracket (12). These notches (20) (22)
Are positioned on the same circumference around the axis of the connecting pin (24), and the angles formed by the notches (20) and (22) are adjusted to the leg opening angle. And both notches (20) (22)
The surface (12a) of the rear movable metal fitting (12) between them has an arc shape centered on the axis of the connecting pin (24).

In the use state shown in FIG. 5, the front fixing bracket (9)
Notch (1) for fixing the use condition of the long hole (17) and the front movable bracket (11).
9) and the rear end of the slot (17) and the notch (1
When the end (projecting edge) of the front support stopper (13) fits into the bottom of 9), the front movable bracket (11) becomes the front fixing bracket (9).
A locked state that does not rotate in the clockwise or counterclockwise direction is secured. Similarly, the long hole of the rear fixing bracket (10)
(18) and the notch (20) for fixing the use state of the rear movable bracket (12) overlap, and the front support stopper (14) is provided at the front end of the slot (18) and the bottom of the notch (20). The engagement of the ends ensures a locked state in which the rear movable metal fitting (12) does not rotate clockwise or counterclockwise with respect to the rear fixed metal fitting (10).

When the support stoppers (13) and (14) are moved to the upper ends of the long holes (17) and (18) from the use state shown in FIG.
The movable brackets (11) and (12) can rotate. Therefore, FIG.
As shown in, the front leg stopper (13) is pushed upward with one hand, and the front leg (3) is easily folded by turning the front leg (3) in the direction of the arrow with the other hand. Similarly, when the rear support stopper (14) is moved to the upper end of the long hole (18), the rear support stopper (14) is turned outward with one hand capable of rotating the rear movable bracket (12). To the rear leg with the other hand
By rotating (4) in the direction of the arrow, the rear leg (4) can be easily folded.

In the folded state shown in FIG. 6, the elongated hole (17) of the front fixing member (9) and the notch (21) for fixing the folded state of the front movable metal member (11) overlap, and the elongated hole (17) is formed. ) And the bottom of the notch (21) are fitted with the end (projecting edge) of the front support stopper (13), so that the front movable bracket (11) can move with respect to the front fixing bracket (9). A locked state that does not rotate clockwise or counterclockwise is secured, and the rear fixing bracket (10) has a long hole.
(18) and the notch (22) for fixing the folded state of the rear movable bracket (12) overlap, and the front end of the long hole (18) and the end of the rear support stopper (14) are provided at the bottom of the notch (22). The lock state in which the rear movable metal fitting (12) does not rotate clockwise or counterclockwise with respect to the rear fixing metal fitting (10) is secured by fitting.

Each of the notches (19), (20), (21), (22) is formed in a U-shape which can just fit the column stoppers (13, 14). The portions are provided with protruding edges (19a) (20a) (21a) (22a) for preventing the column stoppers (13) (14) from moving further outward. During the rotation of the front support stopper (13), the surface (11a) of the front movable bracket (11) comes into contact with the front support stopper (13) and slides, so that the front support stopper (11) returns to its original position. Since it is prevented from returning, it is not necessary to pull the front support stopper (13), and the notch for fixing the folded state of the long hole (17) of the front fixing bracket (9) and the front movable bracket (11) ( When 21) overlaps, the front support stopper
The further movement of (13) is prevented by the protruding edge, and the front support stopper (13) is automatically moved downward by the urging force of the coil spring (15), and is locked. Thereby, the front support stopper (13) is securely fitted, and rattling after the fitting is prevented. Similarly, during rotation of the rear support stopper (14), the surface (12a) of the rear movable bracket (12) comes into contact with the rear support stopper (14) and slides, so that the rear support stopper (12) returns to its original state. It is not necessary to pull back the rear support stopper (14) because it is prevented from returning to the position of, and it is used for fixing the folded state of the long hole (18) of the rear fixing bracket (10) and the rear movable bracket (12). When the notch (22) overlaps, further movement of the rear support stopper (14) is prevented by the projecting edge, and the rear support stopper (14) is moved by the coil spring (16).
Is automatically moved downward by the urging force, and the lock is applied. Thereby, the rear support stopper (14) is securely fitted, and rattling after fitting is prevented. The same is true when changing from the folded state to the use state.

8 to 11, the sliding of the telescopic leg (7) with respect to the column (5) is allowed or prevented, and the protrusion of the telescopic leg (7) from the column (5) is set to a required value. Leg extension device (40)
It is shown.

The leg extender (40) is provided with a plurality of vertically arranged positioning holes (41) provided at predetermined intervals on the inner wall of the extendable leg (7) exposed from the opening of the column (5). It has an open U-shape, and a column below the bottom step (6)
A bracket (42) fixed to the lower end of the (5) with openings facing each other, a stopper support shaft (43) penetrating the bracket (42) in the front-rear direction, and a stopper housed in the bracket (42). The telescopic leg stopper (45) rotatably attached to the support shaft (43), the push-up lever (46) for rotating the telescopic leg stopper (45) upward, and the telescopic leg stopper (45) are provided. A projection (47) fitted into a predetermined positioning hole (41), and a coil spring (elastic member) (48) for urging the telescopic leg stopper (45) in a downward direction.

The telescopic leg (7) has a shape such that ends of hollow members having a rectangular cross section are connected to each other by a connecting wall, and a positioning hole (41) is provided in the connecting wall. .

The bracket (42) has a bottom wall (42a) inclined so as to approach the telescopic leg (7) as it goes down, and a push-up lever ( A rectangular notch (55) for guiding the 46) in the vertical direction is provided.

The stopper support shaft (43) is formed by a pin with a head. The stopper support shaft (43) is attached to the bracket (42) by fitting a retaining ring (44) to the tip of a pin penetrating the bracket (42). ing.

The telescopic leg stopper (45) is substantially U-shaped,
The lower portion of the opposing wall is formed in a tapered shape so as not to interfere with the opposing wall of the bracket (42) when the telescopic leg stopper (45) is rotated. The stopper support shaft (43) that penetrates the bracket (42) also penetrates the upper part of the opposing wall of the telescopic leg stopper (45), so that the telescopic leg stopper (45) can rotate freely on the bracket (42). It is supported by.

The push-up lever (46) is a T-shaped plate when viewed from above, and a portion extending forward and backward is fixed to a step provided in the middle of the opposite wall of the telescopic leg stopper (45). The portion extending left and right is exposed outward from the notch (55) of the bracket (42) in the left and right direction.

A portion extending forward and backward of the lifting lever (46) is provided with a screw hole, into which a bolt (52) is screwed. The end of the step (6) is fitted on the upper part of the bracket (42), and two rivets (53)
Fixed to the bracket (42).

The projection (47) is formed by a stepped pin. The base of the projection (47) is fitted into a through hole provided in the bottom wall of the telescopic leg stopper (45), and the tip of the projection (47) is formed by the telescopic leg (7). ) Side.

The coil spring (48) is received by a hexagonal head of a bolt (52) provided on a push-up lever (46) and a step (6) fixed to a bracket (42).

According to the leg extender (40) configured as described above, when the push-up lever (46) is pushed up, the extendable leg stopper (45) pivots upward, and the projection (47) moves the positioning hole. (41)
, The sliding of the telescopic leg (7) with respect to the column (5) becomes possible. After the telescopic leg (7) is moved to a predetermined position, when the lifting lever (46) is released, the telescopic leg stopper (4
5) is urged by the coil spring (48) to rotate downward. As a result, the projection (47) abuts on the portion of the telescopic leg (7) without the positioning hole (41) or fits into the positioning hole (41). When it comes into contact with the part without the positioning hole (41), by slightly moving the telescopic leg (7), the projection (47) fits into the positioning hole (41), and the telescopic leg (7) is locked. You. Thus, adjustment and locking of the telescopic leg (7) can be performed with a simple operation.

The leg extender (40) includes a mark pin (49) supported by the extendable leg stopper (45) so as to be movable in the front-rear direction, and a coil spring (urging the mark pin (49) outward in the front-rear direction). An elastic member) (50), a through-hole (51) provided on the outer wall of the bracket (42) to make the mark pin (49) visible, and a retaining projection (54) provided at the upper end of the telescopic leg. ).

That is, when the projection (47) is fitted into the positioning hole (41), the position of the mark pin (49) urged by the coil spring (50) is adjusted to the position outside the bracket (42). The position is matched with the position of the hole (51). The mark pin (49) is formed by a stepped pin, and is colored in a color that is easily distinguishable from the color of the bracket (42).

As a result, the stopper (45) is connected to the bracket (4
2) It is difficult to directly see if the telescopic leg (7) is locked because it is stored inside, but by checking whether the marking pin (49) can be seen, it can be securely locked. You can easily know if it is.

The cue bar (32) is attached to the work table (1) as shown in FIGS.

The cue rod (32) has a cylindrical main body, and has a rectangular tube (61) at its lower end. The square tube portion (61) is fixed to the cylindrical body so that a portion larger than half projects downward, and a lower end of the front and rear walls of the square tube portion (61) further has a semicircular shape. Lower protrusion (61a)
Is provided. A vertically long slot (62) is provided in the upper and lower center of the front and rear walls of the square tube portion (61).
2), the front and rear ends of the movable horizontal shaft (63) are rotatably and vertically movably fitted. A round hole (64) for connection with the cue rod receiver (33) is provided at the center of the semicircular lower protruding portion (61a) of the square tube portion (61).

The cue rod receiver (33) is composed of a bottom wall fixed to the bottom wall of the column (5) and a vertical opposed wall (33a) rising from the front and rear edges of the bottom wall. A round hole (66) is provided in the upper and lower center of the opposing wall (33a), and in this round hole (66),
The front and rear ends of a fixed horizontal shaft (65) serving as the center of rotation of the clue bar (32) are fitted. The fixed horizontal shaft (65) is formed by a pin with a head, and the retaining ring (67) is prevented from coming off from the cue rod receiver (33). The lower part of the square tube part (61) of the cue bar (32) is housed between the opposing walls (33a) of the cue bar receiver (33), and the fixed horizontal shaft (65) is the square tube of the cue bar (32). It is also inserted through the round hole (64) provided in the part (61). Thus, the cue bar (32) is supported by the cue bar receiver (33) so as to be rotatable around the front-rear axis. A coil spring (elastic member) (68) extends between the movable horizontal axis (63) attached to the cue rod (32) and the fixed horizontal axis (65) attached to the cue rod receiver (33). Has been
As a result, the two horizontal shafts (63) and (65) are urged in a direction approaching each other. The opposing wall (3
At the upper end of 3a), a movable horizontal shaft (63)
At the time of use, a notch (69) is provided to prevent rotation of the cue bar (32) by being fitted to the movable crawler bar (32). )
A notch (70) at the time of storage is provided to prevent the rotation of the lever.

According to the cue rod (32), the cue rod (32) in the use state shown by the solid line in FIG.
8) Tip direction (upward) of the cue bar (32) against the elastic force of
By pulling the cue bar (32), the cue bar (32) becomes rotatable, so that it is rotated about 180 °, and the movable horizontal shaft (63) is fitted into the notch (70) at the time of storage. 32) can be put into the storage state shown by the chain line in FIG. By performing the reverse operation to fit the movable horizontal shaft (63) into the notch (69) at the time of use, the movable state can be brought into the use state. As a result, the cue rod (32) can be used during work and safety is improved, and the cue rod (32) can be stored compactly, so that it does not obstruct the transportation and storage of the work table (1). .

[Brief description of the drawings]

FIG. 1 is a side view showing a work table according to the present invention.

FIG. 2 is a side view showing a stored state of a work table.

FIG. 3 is a front view showing a use state of a work table.

FIG. 4 is a perspective view showing a configuration for folding legs of a work table.

FIG. 5 is an enlarged side view showing the upper end portion of the work table in use and not shown in the middle.

FIG. 6 is an enlarged side view showing the upper end of the worktable in a folded state, which is omitted on the way.

FIG. 7 is a sectional view taken along the line VII-VII in FIG. 5;

FIG. 8 is an exploded perspective view showing a configuration for extending and retracting a leg of a worktable.

FIG. 9 is an enlarged sectional view of the same.

FIG. 10 is a sectional view taken along line XX of FIG. 9;

FIG. 11 is a sectional view taken along the line XI-XI in FIG. 9;

FIG. 12 is an exploded perspective view showing a configuration for accommodating a cue bar of a worktable.

FIG. 13 is an enlarged sectional view of the same.

14 is a sectional view taken along the line XIV-XIV in FIG.

[Explanation of symbols]

 (1) Work table (2) Top plate (3) (4) Front and rear legs (5) Prop (6) Step (7) Telescopic legs (9) (10) Front and rear fixing bracket (fixed side connecting member) (11) (12) Front and rear movable bracket (movable side connecting member) (13) (14) Front and rear column stopper (15) (16) Spring (17) (18) Slot (19) (20) Notch for fixing operating condition (21 (22) Notch for fixing the folded state (25) Cap (32) Cue rod (33) Cue rod receiver (33a) Opposing wall (40) Leg extender (41) Positioning hole (42) Bracket (43) Stopper support Shaft (45) Telescopic leg stopper (46) Push-up lever (47) Projection (48) Coil spring (elastic member) (49) Marking pin (50) Coil spring (elastic member) (63) Movable horizontal shaft (65) Fixed Horizontal shaft (68) Coil spring (elastic member) (69) Notch when used (70) Notch when retracted

Claims (6)

[Claims] 1. A left and right support having an inward opening and a U-shaped cross section.
(5) A pair of front and rear legs (3) consisting of a step (6) suspended between the left and right columns (5) and telescopic legs (7) slidably fitted under the columns (5). ) (4), the top plate (2) passed over the upper end of the front and rear legs (3) and (4), and the sliding of the telescopic leg (7) with respect to the strut (5) are allowed or prevented. In a workbench provided with a leg extender (40) for setting the amount of protrusion from the support (5) of (7) to a required value, the leg extender (40) is provided at predetermined intervals on the extendable leg (7). A plurality of positioning holes (41) arranged vertically, and a telescopic leg stopper (4) provided at the lower end of the column (5) so as to be rotatable around the front-rear axis.
5), a projection (47) provided on the telescopic leg stopper (45) and fitted in a predetermined positioning hole (41), and a telescopic leg stopper (45) in a direction in which the projection (47) is fitted into the positioning hole. And a resilient member (48) for urging the work table. 2. The leg retracting device (40) has a substantially U-shape and is provided with a stopper housing fixed to a lower end of a column (5) with openings facing each other below a lowermost step (6). Bracket
(42), a stopper support shaft (43) that penetrates the bracket (42) in the front-rear direction and rotatably supports the telescopic leg stopper (45),
Rotate the telescopic stopper (45) to set the protrusion (47) in the positioning hole (4
The elastic member (48) further includes a push-up lever (46) for detaching from the 1), and the elastic member (48) includes a spring support (52) provided on the lowest step (6) and the telescopic leg stopper (45). 2. The worktable according to claim 1, wherein said worktable is a coil spring which is received by said spring and urges said telescopic leg stopper (45) downward. A retractable leg stopper (45) supports a mark pin (49) urged outward in the front-rear direction so as to be movable in the front-rear direction, and has a retractable leg stopper (45) on a side wall of the bracket (42). There is a through hole (51) that matches the position of the marking pin (49) when the projection (47) of the 45) fits into the positioning hole (41), and whether the marking pin (49) is visible The work table according to claim 1, wherein it is possible to determine whether the projection (47) is just fitted in the positioning hole (41). 4. The length of the top plate (2) is longer than the length of the column (5) when the telescopic leg (7) is most contracted, and the front and rear legs (3) and (4) are folded. The fixed-side connecting member (9) which has a long hole (17) (18) outside the front and rear ends of the top plate (2)
(10) are provided, and the left and right ends of the column stoppers (13) and (14) extending left and right extend into the long holes (17) and (18) corresponding to the left and right fixed connection members (9) and (10). The holes (17) and (18) are fitted so as to be freely movable in the longitudinal direction, and rotatably connected to the fixed side connecting members (9) and (10) at the left and right upper ends of the legs (3) and (4). Movable side connecting member (11)
(12) is provided, and each movable side connecting member (11) (12) has a use state fixing notch which overlaps the elongated holes (17) (18) in the use state.
2. The work table according to claim 1, wherein notches (21) and (22) for fixing the folded state are provided so as to overlap the elongated holes (17) and (18) in the folded state. 5. A cap (25) is put on front and rear ends of the top plate (2), and the long holes (17) and (18) of the fixed-side connecting members (9) and (10) are elongated vertically. Lower wall of cap (25) and support stopper
Coil springs (15) and (16) that urge the column stoppers (13) and (14) upward are stretched between the column stoppers (13) and (14). The work table according to claim 2, wherein movement in the direction is restricted. 6. A cue bar receiver (3) provided on top of at least one support (5) and having a vertically opposed wall (33a).
3), the fixed horizontal shaft (65) passed between the opposing walls (33a) of the cue rod receiver (33), and the lower end portion is fixed between the opposing walls (33a) of the cue rod receiver (33). A retractable cue bar (32) rotatably supported on a horizontal shaft (65) and a cue bar (32)
Horizontal axis (63) and horizontal axis (65)
(63) Elastic members (6
8) and a clue bar receiving opposed wall (33a).
A notch (69) is provided at the upper end of the cue bar when the cue bar is used so as to be fitted to the movable horizontal shaft (63) to prevent rotation of the cue bar (32). At the lower end, a notch at the time of storage (70) which is fitted to the movable horizontal shaft (63) during storage of the cue bar to prevent the rotation of the cue bar (32)
The workbench of claim 1, further comprising: