JP2010174526A - Footstool for work in shared corridor - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a footstool for work in a shared corridor, which undergoes the application of such a means as to prevent a worker on the footstool from falling from a balustrade in the shared corridor, when the worker performs the work, for example, for replacing a fluorescent tube of a fluorescent light in the shared corridor of an apartment house. <P>SOLUTION: A ladder-like front leg body 3 is provided at a front end of a working top board 2; a rear frame body 6, which comprises a rear leg body 4 and a safe balustrade portion 5 integrally elongated above the rear leg body 4 and becoming higher than the balustrade C of the shared corridor in use in the shared corridor, is mounted on the rear end of the working top board 2; and a gripping fixing implement 7, which can be fixed to a top portion Co of the balustrade C of the shared corridor, is mounted on the rear frame body 6 via a mounting means 8 height-adjustable with respect to the rear frame body 6. <P>COPYRIGHT: (C)2010,JPO&amp;INPIT

Description

  The present invention relates to a common corridor work platform used for work in a common corridor such as an apartment, in particular, an external corridor (open corridor) type common corridor.

  Currently, when replacing fluorescent tubes installed on the ceiling of a common hall in a condominium, a stepladder, a platform, etc. are used. Becomes lower than the waist height of the worker, and there is a risk that the worker falls from the handrail.

  The present invention avoids the risk that an operator riding on a platform will fall from a handrail in the common corridor when performing fluorescent tube replacement work in the common corridor of the apartment as described above. The purpose is to provide a platform.

  Means for solving the above problems will be described with reference numerals in the embodiments described later. The invention according to claim 1 is a platform used for work in a shared hallway, and includes a work top plate. 2 is provided with a ladder-like front leg body 3, and the rear end portion of the work top plate 2 is integrated with the rear leg portion 4 so that the hand of the common hallway can be used when used in the common hallway. A rear frame 6 comprising a safety handrail portion 5 having a height higher than that of the slide C is attached, and a grip fixture 7 that can be fixed to the top Co of the handrail C in the shared hallway is attached to the rear frame 6. It is characterized by being attached to the rear frame body 6 through attachment means 8 capable of adjusting the height.

  Claim 2 is a common hallway work platform according to claim 1, wherein the front leg 3 is connected to the front end of the work top plate 2 via the rotary connection fitting 9 and the use position and the work top plate 2. The rear end of the work top plate 2 is folded to the use position and the front side of the rear frame 6 with respect to the rear frame 6. It is characterized in that it is pivotally mounted between the folding position.

  Claim 3 is a common hallway work platform according to claim 1 or 2, wherein the holding fixture 7 includes a downward U-shaped metal fitting body 17 composed of an upper plate portion 17a and both end plate portions 17b and 17b, The bracket main body 17 comprises a fastening screw shaft 18 threaded through one end plate portion 17b of the metal fitting body 17 and a presser piece 7a attached to the tip of the screw shaft 18. The metal fitting body 17 is fixed to the handrail top portion Co of the common hallway by rotating the tightening screw shaft 18 so as to straddle the top portion Co.

  According to a fourth aspect of the present invention, in the shared corridor work platform according to the third aspect, the attachment means 8 includes an attachment base frame 21 attached to the rear frame body 6 so that the height can be adjusted, and one end portion of the attachment base frame 21. The pivot frame 23 is pivotally attached, and the other end is fixed to the upper plate portion 17a of the metal fitting body 17 of the gripping fixture 7, and includes an attachment base frame 21 and a connecting frame 22 for connecting the gripping fixture 7. The connecting frame 22 is rotatable with respect to the mounting base frame 21 between a horizontal position where the gripping fixture 7 is held at the use position and a folding position where the connecting frame 22 is folded so as to follow the rear frame body 6. It can be fixed at the position and the folding position.

  The effect of the invention by the above-described solution means will be described with reference numerals of embodiments to be described later. According to the step of the invention according to claim 1, the rear frame body 6 is integrally formed above the rear leg portion 4. By having the safety handrail portion 5 that is higher than the handrail C in the common hallway, the handrail C in the common hallway can move the waist height of the worker M when the worker M rises on the work top 2. The safety handrail 5 of the rear frame 6 is located higher than the handrail C in the common corridor even if the height of the rear hand frame 6 is lowered. It is possible to avoid the risk of accidentally falling from the handrail C in the common corridor during the pipe replacement work. Further, since the rear frame 6 is fixed to the handrail C in the shared hallway by the gripping fixture 7 through the attachment means 8, the step 1 is prevented from falling down, and the operator M can operate on the work top plate 2. Can be done safely. Moreover, even if the height of the handrail C of a common hallway changes, the grip fixing tool 7 attached to the rear part frame body 6 can be accurately fixed to the top part Co.

  According to the second aspect of the present invention, the front leg body 3 is folded at the front end of the work top plate 2 through the rotary connecting bracket 9 to the use position and the lower surface side of the work top plate 2. The rear end of the work top 2 is pivoted between the use position and the folding position where it is folded to the front side of the rear frame 6. If the platform 1 is in the way when the residents of the dwelling unit open the door or the person walks through the common corridor while using the platform 1, the work top 2 and the front leg body 3 can be easily folded to the front side of the rear frame 6.

  According to the third aspect of the present invention, the holding fixture 7 includes the downwardly U-shaped metal fitting body 17 composed of the upper plate portion 17 a and the both end plate portions 17 b and 17 b, and one end plate portion 17 b of the metal fitting body 17. And a presser piece 7a attached to the tip of the screw shaft 18, and the metal fitting body 17 is fitted over the top Co of the handrail C for tightening. By rotating the screw shaft 18, the metal fitting body 17 can be easily fixed to the handrail top Co of the common hallway.

  According to the fourth aspect of the present invention, the attachment means 8 includes the attachment base frame 21 attached to the rear frame 6 so that the height can be adjusted, and one end of the attachment means 8 is pivotally attached to the attachment base frame 21 by the pivot shaft 23. The other end portion is fixed to the upper plate portion 17a of the metal fitting body 17 of the holding fixture 7, and includes an attachment base frame 21 and a connection frame 22 for connecting the holding fixture 7. The connection frame 22 is connected to the attachment base frame 21. On the other hand, it is possible to rotate between the horizontal position where the holding fixture 7 is held at the use position and the folding position where the gripping fixture 7 is folded so as to follow the rear frame 6 and can be fixed at the horizontal position and the folding position, respectively. When moving the place of the platform 1, the bracket body 17 of the grip fixture 7 is removed from the handrail top Co, and the grip fixture 7 and the connecting frame 22 are rotated upward about the pivot shaft 23. By moving it and folding it to the back side of the rear frame 6, It can be quickly and easily moved to.

It is a side view which shows the use condition of the common corridor work platform based on this invention. (a) is a plan view of the step shown in FIG. 1, (b) is a view of the use state of the step viewed from the front side, and (c) is a rear view of the use state of the step from the outside of the common hallway. FIG. It is a side view which shows the state which folded the same platform. It is a side view which shows the locus | trajectory when the same platform is folded. It is an enlarged view which shows a rotation coupling metal fitting in detail. (a) is an enlarged front view of the grip fixture and attachment means, (b) is a plan view, (c) is a cross-sectional view along line YY of (a), and (d) and (e) are attachment means. 8 is a front view showing a part of FIG. (a) is a partially enlarged front view indicated by an arrow Z in FIG. 1, (b) is an enlarged left side view of the same part, and (c) is an enlarged plan view of the same part.

  A preferred embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a side view showing a use state of a shared corridor work platform according to the present invention, and FIG. FIG. 2B is a plan view of the platform shown from the front side, and FIG. 3C is a rear view of the platform from the outside of the common corridor. In these drawings, A is the floor of the common hall of the apartment, B is the ceiling of the common hall, C is the railing of the common hall, for example, a handrail made of PC (precast concrete), and D is the outer wall of the dwelling unit. Reference numeral 1 denotes a common corridor work platform according to the present invention. In this embodiment, concrete handrails are illustrated as handrails in the common hallway, but metal rail type handrails may be used, and concrete handrails and metal railing handrails may be used in combination. A handrail may be used.

  A common corridor work platform 1 according to the present invention is provided with a ladder-like front leg 3 at the front end of a work top 2, and a rear leg 4 and a rear leg 4 at the rear end of the work top 2. A ladder-like rear frame 6 is attached, which extends integrally above the rear leg 4 and includes a safety handrail portion 5 that is higher than the handrail C in the common hallway when used in the common hallway. A grip fixture 7 that can be fixed to the top Co of the handrail C in the common hallway is attached to the frame body 6 via attachment means 8.

  If the structure of the said platform 1 is demonstrated in more detail, the front leg 3 will be the use position as shown as the continuous line of FIG.1 and FIG.4 through the rotation connection metal fitting 9 in the front-end part of the work top plate 2. As shown by a solid line in FIG. 3, the work top plate 2 is pivotably pivoted to a folding position where the work top plate 2 is folded to the lower surface side. Rotate between the use position of the horizontal posture as shown by the solid line in FIG. 1 with respect to the rear frame body 6 and the folding position at which it is folded to the front side of the rear frame body 6 as shown by the solid line in FIG. A brace 11 is pivotally connected between the front leg 3 and the rear leg 4 of the rear frame 6 so that the work top plate 2, the front leg 3 and the brace 11 are rear parts. The frame 6 is folded as shown by the solid line in FIG.

  As shown in FIGS. 2 (a) and 2 (b), the front leg body 3 is formed by horizontally placing a step rail 13 between a pair of left and right leg columns 12, and the upper end of the outer surface of each leg column 12. Rotation coupling metal fitting 9 is interposed between the front end portion of the left and right side end surfaces of work top plate 2. Further, as shown in FIG. 2 (c), the rear frame 6 is formed by horizontally extending horizontal frames 15 and 16 between the left and right vertical frames 14 and 14, and the lower side from the work top plate 2 is the rear side. A leg portion 4 is formed, and an upper side thereof forms a safety handrail portion 5.

  As shown in FIG. 5, the rotary connecting bracket 9 that pivots the front leg 3 on the front end of the work top 2 so as to be rotatable between the use position and the folding position is fixed to the work top 2 side. A connecting plate 36 fixed to the front leg 3 is connected to the outside of the mounting plate 35. More specifically, a contact surface 31 is formed on a lower end edge of the attachment portion 35a of the attachment plate 35 with respect to the work top plate 2 over an appropriate range from a side end of the work top plate 2, and a lower end portion of the attachment portion 35a. A pivot protrusion 35b through which the pivot shaft 37 passes is formed at the center. A fan-shaped connecting portion 36b is formed obliquely upward from one side of the upper end portion of the attaching portion 36a with respect to the front leg 3 of the connecting plate 36, and the other side is bent in an L shape so that the mounting plate 35 is in an open leg state. A contact surface 32 that abuts the contact surface 31 at the lower end and prevents further rotation is formed, and the pivot shaft 37 penetrates the lower end portion of the connecting portion 36b. A pin hole 40 is formed in the lower part of the mounting portion 35a of the mounting plate 35, and a pin 34 for urging a compression spring (not shown) is provided so as to protrude from the pin hole 40 toward the connecting plate 36. In the connecting portion 36b of the plate 36, engagement pin holes 42a and 42b are formed which are fitted in and engaged with the pin holes 40 in the open leg state and the closed leg state of the front leg body 3, respectively.

  When the front leg 3 is in the folded position, the pin 34 penetrating the pin hole 40 of the mounting plate 35 is projected and urged by a compression spring (not shown) as shown in phantom lines in FIG. 6 is engaged with the engaging pin hole 42b, and the front leg 3 is locked in this folding position. When the step 1 is used, the pin 34 is detached from the engaging pin hole 42b of the connecting plate 34, and the front leg 3 is turned forward by turning the front leg 3 forward. When in the use position, the projectingly biased pin 34 is fitted into and engaged with the engagement pin hole 42a of the connecting plate 36, and is locked at the use position indicated by the solid line in FIG.

  A pivot fitting 10 for pivotally attaching the rear end of the work top 2 to the rear frame 6 has one end and one end of an attachment member 10a having one end fixed to the rear end of the work top 2. 5 is formed by pivotally connecting the other end of the mounting member 10b, which is fixed to the rear frame 6 side, by the pivot shaft 30. The work top plate 2 is connected to the rear frame 6 in FIG. It can be rotated between a use position as shown by a solid line and a folding position as shown by a virtual line.

  The front leg body 3 is held at the use position in the backward tilted posture as shown in FIG. 1 by the rotary connecting fitting 9, but is more safely held at the use position by the brace 11. The front end of the brace 11 is pivotally attached to the front leg 3 by a pivot shaft 43, and the rear end of the brace 11 is pivoted to the tip of the mounting bracket 44 fixed to the rear leg 4 of the rear frame 6. A pivot 45 is pivotally attached. In this case, the pivot shaft 45 on the rear end side of the brace 11 is positioned forward by a distance e (about the thickness of the work top plate 2) from the pivot shaft 30 on the rear end portion side of the work top plate 2. However, the brace 11 can be folded along the lower surface of the work top 2 (see FIG. 3).

  6A is an enlarged front view of the gripping fixture 7 and the attachment means 8, FIG. 6B is a plan view, FIG. 6C is a cross-sectional view taken along the line Y-Y of FIG. ) Is a front view showing a part of the mounting means 8, FIG. 7 (a) is a partially enlarged front view indicated by an arrow Z in FIG. 1, (b) is an enlarged left side view of the same part, (c) FIG. 3 is an enlarged plan view of the same part. As shown in FIG. 2 (a), a pair of the holding fixture 7 and the attaching means 8 are provided. Each gripping fixture 7 is tightened by being screwed into a downward U-shaped metal fitting body 17 composed of an upper plate portion 17a and both end plate portions 17b and 17b, and one end plate portion 17b of the metal fitting body 17. It consists of a screw shaft 18 and a presser piece 7a attached to the tip of the screw shaft 18. In use, the metal fitting body 17 is straddled over the top Co of the handrail C and is tightened by the knob 18. By rotating the screw shaft 18, the metal fitting body 17 is fixed to the handrail top Co of the common hallway.

  Each attachment means 8 has an upward U-shaped second frame 20 fixed to a rear side wall 19a of a laterally U-shaped first frame 19 fitted to the vertical frame 14 of the rear frame body 6 from the outer side. The mounting base frame 21 and one end of the mounting base 21 are pivotally supported by the pivot shaft 23, and the other end is gripped and fixed to the upper plate portion 17a of the metal fitting body 17 of the fixture 7. The mounting base frame 21 is attached and fixed to the vertical frame 14 of the rear frame body 6 so that the mounting height can be adjusted, and the connection frame 22 is connected to the vertical frame 14 of the rear frame body 6. Is rotatable with respect to the mounting base frame 21 between a horizontal position for holding the holding fixture 7 in the use position and a folding position for folding along the vertical frame 14 of the rear frame body 6. It can be fixed at the position and the folding position.

  The mounting means 8 will be further described. As shown in FIG. 7, the vertical frame 14 of the rear frame body 6 is provided with bolt insertion holes 24 at a constant pitch along the longitudinal direction thereof. The front and rear wall portions 19a and 19b of the U-shaped first frame 19 are provided with bolt insertion holes 25 at positions corresponding to the bolt insertion holes 24 on the vertical frame 14 side at two upper and lower positions. Are fitted into the vertical frame 14, the bolts 26 are inserted from the bolt insertion holes 25 on the first frame 19 side into the bolt insertion holes 24 on the vertical frame 14 side, and tightened with nuts 27, whereby the first frame 19 is It can be attached and fixed at a required height position on the vertical frame 14.

  The U-shaped mounting frame 20 that forms the mounting base frame 21 together with the U-shaped base frame 19 includes, as shown in FIG. 6, a left and right upright piece 20a, 20a and a connecting piece 20b that connects the compatible upper pieces 20a, 20a. It is formed in a downward U shape as shown in (c) of the figure, and one end portion of the connecting frame 22 fitted between the pieces 20a and 20a is U-shaped by a pivot shaft 23 comprising a bolt. It is pivotally attached to the shape mounting frame 20.

  Further, one rising piece 20a of the U-shaped mounting frame 20 is provided with an arc-shaped long hole 28 on a radius centered on the pivot shaft 23, and the connecting frame 22 is formed from the arc-shaped long hole 28. When the butterfly bolt 29 is screwed into the nut 46 fixed in one end of the shaft, and the butterfly bolt 29 is loosened, the connecting frame 22 can rotate around the pivot shaft 23. By tightening at the lower end position of the arc-shaped elongated hole 28 as shown in FIG. 6 (a), the connecting frame 22 is fixed to the use position of the holding fixture 7, and the butterfly bolt 29 is attached to (e) of FIG. The connecting frame 22 is fixed at the folding position by tightening at the upper end position of the arc-shaped long hole 28 as shown in FIG. FIG. 6D shows a state in which the butterfly bolt 29 passes through the middle part of the arc-shaped slit 28. The other end portion of the connecting frame 22 is fitted between a pair of attachment pieces 47, 47 provided on the upper plate portion 17 a of the metal fitting body 17 and fixed with a rivet 48.

  When the tube for fluorescent lamp E installed on the ceiling B of the shared hallway is replaced using the shared hallway platform 1 configured as described above, as shown in FIG. Is placed on the floor A with the legs open, and the attachment base frame 21 of the attachment means 8 provided integrally with the grasping fixture 7 is appropriately moved up and down along the vertical frame 14 of the rear frame body 6. The fastening screw shaft 18 is rotated in a state where the metal fitting body 17 of the grip fixture 7 is fitted over the top Co of the handrail C to fix the metal fitting 17 to the handrail top Co, and then the mounting base frame 21 is attached. The first frame 19 is fixed to the required height position on the vertical frame 14 with bolts 26 and nuts 27, and the butterfly bolt 29 of the second frame 20 is tightened to fix the connecting frame 22 in the horizontal position, thereby rear frame body. 6 is fixed to the handrail C.

  Since the rear frame 6 of the platform 1 has a safety handrail portion 5 that extends integrally above the rear leg portion 4 and is higher than the handrail C in the common hallway, as shown in FIG. Even if the handrail C in the common hallway becomes lower than the waist height of the worker M when M rises on the work top 2, the safety handrail part 5 of the rear frame 6 is the handrail C in the common hallway. Since the safety handrail portion 5 is located at a sufficiently high position, it is possible to avoid the danger that the operator M accidentally falls from the handrail C in the common hallway during the replacement work of the fluorescent lamp E tube. . Further, since the rear frame 6 is fixed to the handrail C in the common hallway by the gripping fixture 7 via the attaching means 8, the step 1 is prevented from falling down, and the worker M can move on the work top plate 2. Can be done safely.

  In addition, when the step 1 becomes in the way when the residents of the dwelling unit open the door or the person passes through the common hallway while the step 1 is in use, the work top plate with the rotary coupling 9 unlocked. 3 and 4, the work top 2 rotates about the pivot 30, and the brace 11 rotates about the pivot 45, and the front leg 2. The body 3 moves to the upper folding position in conjunction with the work top plate 2 and the brace 11, so that the work top plate 2, the brace 11 and the front leg 3 are rear parts as shown by the solid lines in FIG. The frame 6 is compactly folded in a sandwich shape on the front side.

  Further, when moving the place of the platform 1, the butterfly bolt 29 of the mounting base frame 21 is loosened, the fastening screw shaft 18 of the grip fixture 7 is loosened, and the metal fitting body 17 of the grip fixture 7 is pulled up. Since the metal fitting body 17 is detached from the handrail top portion Co, the holding fixture 7 and the connecting frame 22 can be folded upward on the pivot shaft 23 and folded to the back side of the rear frame body 6. In this state, the platform 1 may be moved to a predetermined location. When the work is finished, the holding fixture 7 and the connecting frame 22 are folded to the back side of the rear frame 6, and the work top plate 2, the brace 11 and the front leg 3 are moved to the front side of the rear frame 6. By folding, the step 1 can be easily carried and the step 1 can be easily stored.

DESCRIPTION OF SYMBOLS 1 Step 2 Work top board 3 Front leg body 4 Rear leg part 5 Safety handrail part 6 Rear frame body 7 Grasp fixing tool 8 Mounting means 9 Rotating connection metal fitting 17 Metal fitting body 18 Tightening screw shaft

Claims (4)

  A platform used for work in a common hallway, provided with a ladder-like front leg at the front end of the work top, and at the rear end of the work top, a rear leg and above it A rear frame consisting of a safety handrail that extends integrally and is higher than the handrail of the common corridor when used in the common corridor is attached, and this rear frame is fixed to the top of the handrail of the common corridor A common corridor work platform, in which possible gripping fixtures are attached to the rear frame through attachment means that can be adjusted in height.   The front leg is pivotally attached to the front end of the work top plate so as to be rotatable between a use position and a folding position where it is folded to the lower surface side of the work top plate via a rotating connecting bracket. 2. The common hallway work according to claim 1, wherein the rear end portion of the plate is pivotally attached to the rear frame so as to be rotatable between a use position and a folding position where the rear end of the plate is folded to the front side of the rear frame. Springboard.   The grip-fixing bracket includes a downward U-shaped bracket body composed of an upper plate portion and both end plate portions, a fastening screw shaft threaded through one end plate portion of the bracket body, and a tip portion of the screw shaft. The bracket body is fixed to the handrail top of the common hallway by rotating the fastening screw shaft over the bracket body over the top of the handrail. The common corridor work platform according to claim 1 or 2.   The attachment means includes an attachment base frame that is attached to the rear frame so that the height thereof can be adjusted, and one end portion of the attachment base frame is pivotally supported by a pivot shaft, and the other end portion is gripped by the upper plate of the metal fitting body of the fixture 7 The connecting frame is connected to the mounting base frame and the holding fixture, and the connecting frame is connected to the mounting base frame in a horizontal position for holding the holding fixture in the use position and to the rear frame body. 4. The shared corridor work platform according to claim 3, wherein the common corridor work platform is rotatable between a folding position where the folding is performed so as to be accompanied, and can be fixed at a horizontal position and a folding position.

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