JP5511298B2 - Portable worktable - Google Patents

Description

  The present invention relates to a work table used when working in a relatively high place such as interior finishing of a ceiling, wiring in a ceiling, piping, etc. in a construction site of a building, and in particular, legs on both front and rear ends of a top plate. Each leg is composed of a pair of left and right pedestals and a step pedestal horizontally mounted between both pedestals, and a cue bar is attached to the top of the pedestal via a cue bar mounting bracket. The present invention relates to a portable work table that is pivotally mounted so as to be able to change its posture between a standing posture protruding upward from a plate and a folding posture folded along a pedestal.

  Conventionally, as this type of work table, there is one described in Patent Document 1 below. In this workbench, the clue bar pivots at the upper end of the pedestal so that the posture can be changed between a standing posture protruding upward from the top plate and a folding posture folded along the pedestal via a mounting bracket. While being worn, it is pivotally attached so that the posture can be changed in a standing posture and a folded posture.

JP 2002-129744 A

  As described above, legs are provided at both ends of the top plate, and a clue bar is folded at the upper end of the pedestal on each leg, along a standing posture protruding above the top plate and along the pedestal. In a portable work table of a type that can be changed to a folded posture, the work table is often rolled over to the ground or floor. When the work table is turned over in this way, the left and right end surfaces of the clue bar and the top plate directly abut against the ground and the like, and the clue bar and the top plate may be damaged.

  In view of the above problems, an object of the present invention is to provide a portable work table that can prevent or reduce damage to a clue bar and a work table body when the work table rolls over.

Means for solving the above problems will be described with reference numerals in the embodiments described later. The portable work table according to the first aspect of the present invention has legs 2, 2 at both front and rear ends of the top plate 1. Each leg is composed of a pair of left and right limbs 2a, 2a and a step rail 2b horizontally mounted between the two limbs 2a, 2a, and a clasp bar mounting bracket 6 is provided at the upper end of the pedestal 2a. In the portable worktable in which the clue bar 5 is pivotally mounted so that the posture can be changed between a standing posture protruding upward from the top plate 1 and a folding posture folded along the pedestal 2a. 6 is a portable work table in which a cushion member 17 for absorbing an impact received by the work table body T and the clue bar 5 when the work table rolls over is projected on the outer surface of the work table . Inner and outer side plates 6a, 6b forming the clasp bar mounting bracket 6 Characterized in that mounted to project outwardly plate 6b outer surface.

According to claim 2 , legs 2, 2 are provided at both front and rear ends of the top board 1, and each leg is composed of a pair of left and right leg posts 2a, 2a and a traverse 2b horizontally placed between the two leg posts 2a, 2a. At the upper end of the pedestal 2a, the clasp bar 5 is placed in a standing posture in which the clasp bar 5 projects upward from the top plate 1 and a folding posture in which the clasp bar 5 is folded along the pedestal 2a. In the portable worktable pivotably mounted, a cushion member 17 for absorbing the impact received by the worktable body T and the clue bar 5 when the work table rolls over is provided on the outer surface of the clasp bar mounting bracket 6. The cushioning member 17 is a projecting portable work table, and the cushion member 17 protrudes from the outer plate 6b of the handle bar pivot shaft 11 penetrating the inner and outer side plates 6a, 6b forming the handle bar mounting bracket 6 in the left-right direction. It is attached to the part.

  The effect of the invention by the above-described solution means will be described with reference numerals in the embodiments described later. According to the work table of the invention according to claim 1, when the work table rolls over, the pedestal of each leg 2 is provided. The cushion member 17 protruding from the outer surface of the clasp bar mounting bracket 6 attached to the upper end of 2a hits the ground or floor surface, so that the impact at the time of this work table rollover is absorbed and alleviated by this cushion member 17. Thus, damage to the clue bar 5 and the workbench main body T can be avoided or reduced as much as possible.

Further, according to the present invention , the cushion member 17 can be attached to any location on the outer surface of the outer side plate 6b of the inner and outer side plates 6a, 6b forming the clue bar mounting bracket 6.

According to the second aspect of the present invention, when the work table rolls over, the cushion member 17 protruding from the outer surface of the clasp bar mounting bracket 6 attached to the upper end portion of the leg column 2a of each leg 2 is provided on the ground or By striking against the floor surface, the impact when the work table rolls over is absorbed and alleviated by the cushion member 17, and damage to the clue bar 5 and work table body T can be avoided or reduced as much as possible. When attaching the member 17 to the outer protruding end portion of the clasp bar pivot shaft 11 penetrating the both side plates 6a, 6b forming the clasp rod mounting bracket 6 in the left-right direction, the clue bar pivot shaft 11 is used. Mounting of the cushion member 17 is simple and easy.

It is a front view of the work table concerning the present invention. It is a side view of the work bench. It is a perspective view which shows the state by which the clue stick is being fixed to the standing posture. It is a perspective view which shows the state by which the clue stick is being fixed to the folding posture. It is an enlarged side view of the attachment part of the clue bar lower end part by an attachment metal fitting. It is an enlarged front view of the attachment part of the clue bar lower end part by an attachment metal fitting. (a) is a plan view showing a state where the lock pin is locked, and (b) is a plan view showing a state where the lock pin is unlocked. (a) is a front view of a mounting bracket showing another embodiment of the cushion member, (b) is a side view, (c) is an explanatory diagram for explaining a method of mounting the cushion member, and (d) is a mounting of the cushion member. It is sectional drawing which shows a state. (a) is a front view of a mounting bracket showing still another embodiment of the cushion member, and (b) is a side view. (a) is a partial plan view of a work table showing still another embodiment of the cushion member, and (b) is a front view thereof. (a) is a side view in a state where the clue bar of the workbench shown in FIG. 3 to FIG. 9 is in the folding position, and (b) is a side view showing a state in which the workbench rolls over. (a) is a side view in the state in which the clue bar of the workbench shown in FIG. 10 is in the folding position, and (b) is a side view showing the rollover of the workbench.

  A preferred embodiment of the present invention will be described below with reference to the drawings. In the workbench shown in FIGS. 1 and 2, T is a workbench main body, and ladder-like legs 2 are provided at the left and right ends of the top plate 1. , 2 are not shown in the figure through the rotary fitting 3, but are closed so that they are parallel to the lower surface of the top plate 1, and are in a stand-up state in which they stand up as if they are inclined downwardly as shown in FIG. A stay 4 is provided between the top plate 1 and each leg 2 so as to be able to be bent. As shown in FIG. 2, each leg 2 is composed of a pair of left and right leg pillars 2a and 2a arranged in a downwardly extending manner, and a step rail 2b horizontally mounted in a plurality of stages between both leg pillars 2a and 2a. The clasp bar mounting bracket 6 fixed to the upper end of each pedestal 2a via a spacer bracket has a standing posture in which the clasp bar 5 projects upward from the top plate, and a folding posture in which the clasp bar 5 is folded along the pedestal. It is pivotally attached so that the posture can be changed.

  As shown in FIGS. 2 to 5, the clasp bar mounting bracket 6 is fixed to the upper end portion of the pedestal 2 a via a spacer bracket 7. In this case, the left and right pedestals 2a, 2a forming the leg 2 are arranged so as to extend downward, and the respective pedestals 2a are inclined at a certain angle. Therefore, as shown in FIG. The clue bar mounting bracket 6 is attached to the pedestal column 2a at a predetermined angle via the pin 7, and the lower end portion 5a of the clue bar 5 is formed to be inclined at a predetermined angle with respect to the upper part thereof. 5 can be projected and extended in an upright position above the top plate 1.

  As shown in FIGS. 3 to 6, the mounting bracket 6 has a pedestal 2 a so as to form a groove portion 8 extending in the vertical direction in a generally U shape when viewed from the side by the inner and outer side plates 6 a and 6 b and the back plate 6 c. Is attached to the upper end portion of each via a spacer fitting 7. Pin top side lock holes 9a and 9b are provided at the upper and lower ends of the inner side plate 6a (side plate 6a adjacent to the leg column 2a) forming the groove 8, and the outer side plate 6b (from the leg column 2a). A part of the upper end of the far side plate 6b) is cut away (the cut portion is indicated by Sa), and a semicircular pin engaging portion 10a is formed at a portion facing the lock hole 9a. This side plate 6b Similarly, a part of the upper end portion is cut away (the cut portion is indicated by Sb), and a semicircular pin engaging portion 10b is formed at a portion facing the lock hole 9b.

  As shown in FIGS. 3 and 5, the spacer metal fitting 7 includes a back plate portion 7a, an upper plate portion 7b, a lower plate portion 7c, and an upper flange 7d protruding downward from the lower plate portion 7c. The clasp bar mounting bracket 6 is attached to the inner side plate 6a by welding, for example. In order to attach the spacer fitting 7 attached to the attachment fitting 6 to the upper end portion of the pedestal 2a, a nut 22 is attached to a required portion of the back plate portion 7a of the spacer fitting 7 as shown in FIG. The bolt 21 is inserted into the bolt insertion hole 20 penetrating the leg column 2a, the rotary fitting 3 and the spacer fitting 7 from the inside of the pillar 2a, and the bolt 21 is screwed into the nut 22 of the spacer fitting 7 so that the spacer The metal fitting 7 can be attached to the pedestal 2a.

  In the groove portion 8 formed in the mounting bracket 6, the lower end 5 o of the clasp bar 5 is pivotally attached to the center portion in the vertical direction so as to be rotatable in the vertical direction by the pivot shaft 11. The lower end portion 5a of the clasp bar 5 protruding in an upright position above the top plate 1 is fitted as shown in FIGS. 3, 5 and 6, and the lower half B of the groove portion 8 is shown by the solid line in FIG. And the lower end part 5a of the clue bar 5 reversed from the standing posture and folded along the pedestal 2a as shown in phantom lines in FIG. 6 is fitted.

  As shown in FIGS. 3 to 7, a lock pin 12 having a substantially U-shaped handle 23 formed on the proximal end side of the pin forms a rectangular tube-shaped clue bar 5 at the lower end portion 5 a of the clasp bar 5. The lock pin 12 is slidably passed through the left and right side walls m, n. The coil pin 14 is interposed between the lock pin 12 and the clasp bar 5 so that the pin tip portion 12a is a pin at the upper end portion and the lower end portion of the mounting bracket side plate 6a. It is biased in a direction to enter the distal end side lock holes 9a, 9b. Accordingly, with the lower end portion 5a of the clue bar 5 fitted in the upper half A of the groove portion 8 as shown in FIG. 3, the pin tip portion 12a is inserted into the pin tip side lock hole 9a at the upper end portion of the side plate 6a. As a result, the clasp bar 5 is fixed in an upright position, and the lock pin 12 is unlocked by pulling the handle 23 toward the front side against the biasing force of the coil spring 14, and the clasp bar 5 is rotated downward in this state. The lower end portion 5a is fitted into the lower half B of the groove portion 8, and the pin end portion 12a is inserted into the pin end side lock hole 9b at the lower end portion of the side plate 6a to fix the clue bar 5 in the folded position. Can do.

  Further, as shown in FIGS. 3, 4, 6 and 7, pin base end side lock holes 24a and 25a into which the front end portion 12b of the U-shaped handle 23 on the base end side of the lock pin 12 enters are formed. The attached pieces 24 and 25 are attached to the upper and lower ends of the side plate 6 b that forms the groove 8 of the attachment fitting 6. In this case, as can be seen from FIG. 7, the upper and lower mounting pieces 24, 25 are fixed to the upper and lower ends of the back plate 6c by welding, for example, in a state flush with the side plate 6b.

  Therefore, in the state where the lower end portion 5a of the clasp bar 5 is fitted in the upper half A of the groove portion 8, the pin tip portion 12a enters the pin tip side lock hole 9a at the upper end portion of the side plate 6a and the U-shaped handle 23 is inserted. By inserting the front end portion 12b into the pin base end side lock hole 24a on the upper end portion side of the side plate 6b, the clue bar 5 can be stably and firmly fixed in a standing posture. In addition, with the lower end portion 5a of the clasp bar 5 fitted into the lower half B of the groove portion 8, the pin tip portion 12a enters the pin tip side lock hole 9b at the lower end portion of the side plate 6a and the U-shaped handle 23 By inserting the distal end portion 12b into the pin base end side lock hole 25a on the lower end portion side of the side plate 6b, the clue bar 5 can be stably and firmly fixed in the upright posture.

  The upper end portion of the side plate 6b forming the groove portion 8 of the mounting bracket 6 is partially cut away, and the cut portion Sa is locked when the lower end portion 5a of the clasp bar 5 is fitted to the upper half A of the groove portion 8. A semi-circular pin engaging portion 10a with which the proximal end side of the pin 12 is engaged is formed, and the upper end portion of the same side plate 6b is also partially cut off in the same manner. A semi-circular pin engaging portion 10b is formed that engages the proximal end side of the lock pin 12 when the portion 5a is fitted into the lower half B of the groove portion 8. In the upper end side cut-off portion Sa, when the clasp bar 5 fitted in the upper half A of the groove 8 is rotated downward, the base end side of the lock pin 12 that pivots together with the clasp bar 5 is smooth from the upper end of the side plate 6b. The bottom cut-out portion Sb is formed so that the base end side of the lock pin 12 is the bottom end of the side plate 6b when the clasp bar 5 fitted to the lower half B of the groove 8 is rotated upward. So that you can get out of it smoothly.

  As shown in FIGS. 7A and 7B, the coil spring 14 is fitted into the lock pin 12 and attached to the distal end side of the lock pin 12, and the side wall m of the clasp bar 5. The lock pin 12 is urged by the urging force of the spring 14 in a direction to enter the pin tip side lock holes 9 a and 9 b of the mounting bracket 6.

  The pivot shaft 11 pivotally attached to the mounting bracket 6 so that the lower end 5o of the clue bar 5 can be rotated in the vertical direction is a bolt. As shown in FIG. , N and through both side plates 6a and 6b of the mounting bracket 6 (through holes of the inner and outer side plates 6a and 6b are indicated by 35 in FIGS. 8 and 9), both inner and outer plates of the mounting bracket 6 are provided. A truncated cone-shaped cushion member 17 is formed on the head 11a of the bolt 11 projecting outside the outer side plate 6b (the side plate 6b opposite to the side plate 6a adjacent to the pillar 2a) of 6a and 6b. The outer end of the pivot shaft 11, that is, the bolt head 11a is attached. The cushion member 17 is for absorbing the impact received by the worktable body T and the clasp bar 5 when the worktable rolls over. The cushion member 17 is covered with the outer end portion of the pivot shaft 11. By attaching to the work table, it is possible to reduce the impact received by the work table body T and the clue bar 5 when the work table rolls over and to prevent the work table body T and the clue bar 5 from being damaged. The cushion member 17 is formed of an elastic material such as natural rubber, synthetic rubber, or other soft synthetic resin material. A nut 18 is screwed to a tip end portion of a pivot shaft (bolt) 11 protruding from the side plate 6a adjacent to the pedestal 2a. The bolt head 1 a which is the pivot shaft 11 is configured to be immersed in a recess 33 provided on the distal end surface of the truncated cone-shaped cushion member 17.

Next, the usage method of the clue bar 5 mentioned above is demonstrated.
First, as shown in FIG. 4, the lock pin 12 resists the urging force of the coil spring 14 from the state in which the clasp bar 5 is fitted into the lower half B of the groove 8 of the mounting bracket 6 and the lock pin 12 is locked. The front end portion 12a of the pin 23a is pulled out from the pin front end side lock hole 9b at the lower end of the side plate 6a, and the front end portion 12b of the handle 23 is pulled out from the pin base end side lock hole 25a. The clasp bar 5 is unlocked, and the clasp bar 5 is rotated upward about the pivot shaft 11 in the unlocked state as shown in FIG.

  In the unlocked state as described above, the lock pin 5 is rotated upward about the pivot shaft 11 and its lower end portion 5a is fitted to the upper half A of the groove portion 8, and then the lock pin that has been pulled up to that point. While loosening the handle 23 of the pin 12, the pin distal end portion 12a is inserted into the pin distal end side lock hole 9a at the upper end portion of the side plate 6a, and the tip end portion 12b of the handle 23 is inserted into the pin proximal end side lock hole at the upper end portion side of the side plate 6b. The clue bar 5 is fixed in an upright posture by rushing into 24a. This state is shown in FIGS.

  When storing the clasp bar 5, the handle 23 of the lock pin 12 is pulled toward the front side against the biasing force of the coil spring 14 from the state shown by the solid lines in FIGS. 3 and 6, and the pin tip 12a is moved to the side plate 6a. Pull out the pin distal end side lock hole 9a at the upper end and pull out the distal end portion 12b of the handle 23 from the pin base end side lock hole 24a to unlock the clasp bar 5 in the upright position. The clasp bar 5 is rotated downward about the shaft 11, the lower end portion 5a is fitted into the lower half B of the groove portion 8, and the pin distal end portion 12a of the side plate 6a is loosened while the handle 23 of the lock pin 12 is loosened. The clasp bar 5 is fixed in an upright position by causing the tip end portion 12b of the handle 23 to enter the pin base end side lock hole 25a on the lower end portion side of the side plate 6b. That.

  FIG. 11A shows a work table in which the clue bar 5 provided on the pedestal 2a of each leg 2 is fixed in the folded position, and FIG. 11B shows the work table in the state shown in FIG. The state of rollover is shown. When the work table rolls over as shown in FIG. 11 (b), the cushion member 17 projecting from the outer surface of the clasp bar mounting bracket 6 attached to the upper end portion of the leg 2a of each leg 2 is the ground GL first. Therefore, the impact at the time of rollover of the work table is absorbed and alleviated by the cushion members 17, thereby avoiding damage to the clue bar 5 and the work table body T, or reducing the damage as much as possible.

  1 to 6, the cushion member 17 is a bolt that is a clasp bar pivot shaft 11 that penetrates the side plates 6 a and 6 b that form the clasp bar mounting bracket 6 in the left-right direction. Since it is used and attached to the outer projecting end of the bolt 11, the cushion member 17 can be easily and easily attached.

  8 and 9 show an embodiment in which a truncated cone-shaped cushion member 17 is attached to another part of the clasp bar mounting bracket 6. First, in the embodiment of FIG. 8, the cushion member 17 is attached to the clasp bar. The side plate 6b outside the both side plates 6a, 6b that form the metal fitting 6 is attached to the outer surface of the clasp bar pivot shaft 11 on the outer surface. When attaching the cushion member 17, as shown in FIG. 8C, a cylindrical female screw member 27 is embedded in the base end portion of the truncated cone-shaped cushion member 17 in advance when the cushion member 17 is formed. Further, a countersunk screw head receiving hole 28 is provided at a predetermined location on the outer side plate 6 b of the mounting bracket 6, and a countersunk head bolt 29 is passed through the mounting bracket 6 through the countersunk head receiving hole 28, so that the inside of the cushion member 17. By screwing and tightening into the female screw member 27, the cushion member 17 can be attached and fixed to the outer surface of the side plate 6b as shown in FIG.

  In the embodiment of FIG. 9, the cushion member 17 is attached to the outer surface of the side plate 6 b outside the side plates 6 a and 6 b forming the clasp bar mounting bracket 6 below the clasp bar pivot shaft 11. The method of attaching the member 17 to the side plate 6b is the same as that of the embodiment shown in FIG.

  FIG. 10 shows an embodiment in which a rectangular cushion member 17 is provided on the left and right end faces 1 a of the top plate 1. The cushion member 17 protrudes from at least both ends of the left and right side end faces 1a of the top plate 1, and the cushion member 17 hits the ground GL before anything when the work table rolls over. The protruding length is set so as to be sufficiently longer than the protruding length of the cushion member 17 from the outer surface of the side plate 6b of the clasp bar mounting bracket 6 of each leg 2a. When the cushion member 17 is attached, as shown in FIG. 10A, a plurality of screw insertion holes 30 including screw head insertion hole portions 30a and screw shaft portion insertion hole portions 30b are provided in the cushion member 17 so as to penetrate therethrough. The screw 31 inserted from the screw head insertion hole 30a of the cushion member 17 into the screw shaft insertion hole 30b is inserted into a screw insertion hole (not shown) provided in the side end surface 1a of the top plate 1. The nut 32 can be attached to the insertion end by screwing and tightening the nut 32 from the inside of the top plate 1.

  12 (a) is a work table in which the clue bar 5 provided on the pedestal 2a of each leg 2 is fixed in a folded position, and a cushion member is provided on the left and right end surfaces 1a of the top plate 1. FIG. Reference numeral 17 denotes a projecting work table, and (b) shows a state in which the work table rolls over from the state (a). When the work table rolls over as shown in FIG. 12 (b), the cushion member 17 protruding from the left and right side end surfaces 1a of the top plate 1 hits the ground GL first, so that the impact at the time of the work table roll-over occurs. It is absorbed and alleviated by each cushion member 17, and the damage to the clue bar 5 and the workbench main body T can be avoided or the damage can be reduced as much as possible.

  In the embodiment of the work table shown in FIGS. 1 to 9 described above, the cushion member 17 protrudes from the outer surface of each clasp bar mounting bracket 6, and in the embodiment of the work table shown in FIG. Although the cushion member 17 projects from the end surface 1a, the cushion member 17 may project from either the outer surface of each clasp bar mounting bracket 6 of the work table or the left and right end surfaces 1a of the top plate 1.

T Worktable body 1 Top plate 1a Left and right side end surfaces 2 of the top plate Leg 2a Leg column 5 Catch bar 5a Lower end portion of the handle bar 6 Mounting bracket 6a Side plate 6b inside the mounting bracket Side plate 6c inside the mounting bracket Back plate 11 Pivot shaft 17 Cushion member

Claims (2)

Legs are provided at both the front and rear ends of the top plate, and each leg consists of a pair of left and right pedestals and a step pedestal that lies horizontally between both pedestals, and a clasp stick mounting bracket is attached to the upper end of the pedestal. In the portable worktable that is pivotally mounted so that its posture can be changed between a standing posture that projects upward from the top plate and a folding posture that is folded along the pedestal. A portable work table in which a cushion member for absorbing the impact received by the work table body and the clue bar when the work table rolls over is projected on the side surface ,
The portable work table, wherein the cushion member is attached so as to protrude from the outer surface of the outer side plate of the inner and outer side plates forming the clasp stick mounting bracket. Legs are provided at both the front and rear ends of the top plate, and each leg consists of a pair of left and right pedestals and a step pedestal that lies horizontally between both pedestals, and a clasp stick mounting bracket is attached to the upper end of the pedestal. In the portable worktable that is pivotally mounted so that its posture can be changed between a standing posture that projects upward from the top plate and a folding posture that is folded along the pedestal. A portable work table in which a cushion member for absorbing the impact received by the work table body and the clue bar when the work table rolls over is projected on the side surface,
The portable worktable characterized in that the cushion member is attached to the outer plate protruding end portion of the clasp bar pivot shaft that penetrates the inner and outer side plates forming the clasp bar mounting bracket in the left-right direction.

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