JP2014169546A - Storage table of stepladder - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a storage table of a stepladder for improving even workability, by installing a large storage table.SOLUTION: The storage table 2 of the stepladder 1 is composed of a main leg body 3 composed of both studs 5 and 5 and a horizontal rod 6, a footboard 6 arranged between both studs 5 and 5 of the main leg body 3 and an auxiliary leg body 4 having an upper end part installed on the upper side of the main leg body 3 on the rear side of the main leg body 3, and a width of the storage table 2 is formed narrower than an interval between both studs 5 and 5 of the main leg body 3, and movement pivoting means 10 is respectively interposed between both side surfaces of the storage table 2 arranged between both studs 5 and 5 of the main leg body 3 and both studs 5 and 5 of the main leg body 3, and in use, a base end part 2a of the storage table 2 is put in a pivoting state between the upper end parts of both studs 5 and 5 of the main leg body 3, and the storage table 2 is locked by lock means 14 in a horizontal attitude of projecting a tip part 2b of the storage table 2 to the rear of the main leg body 3, and a lock is released from a state of locking the storage table 2 in the horizontal attitude, and the storage table 2 is stored between both studs 5 and 5 by sliding to both studs 5 and 5 of the main leg body 3 via the movement pivoting means 10.

Description

  The present invention relates to a table for a stepladder in which a work table for temporarily placing a work tool such as a nail or a hammer or other necessary items on a stepladder is foldably attached.

  There are two types of conventional stepladders with a storage table, one in which the storage table is fixed to the stepladder and the other one that is foldable. As what fixed the pedestal with respect to the stepladder, it describes in the following patent document 1, for example, and what detachably attached the pedestal to the stepladder is described in, for example, the following patent document 2 There is something that was done.

JP 2012-62640 A Japanese Utility Model Publication No. 55-42556

  In the case of the stationary object table described in Patent Document 1, as shown schematically in FIG. 5 (a), the main legs in the folding stepladder 31 composed of the main legs 33 and the auxiliary legs 34 are shown. Although it can be attached to the upper end of the step 33, the stepladder 31 itself is not easily stowable. Therefore, there are many small storage bases 32A having a short depth as shown in the figure, and therefore, there is a disadvantage that necessary objects cannot be sufficiently placed. is there. Further, in the case of the foldable object table described in Patent Document 2, a large object table 32B can be attached as schematically shown in FIG. 5 (b). Since it is attached to the rear side (back side) of the main leg 33 at a position lower than the upper end of the main leg 33, the upper end of the main leg 33 gets in the way, and the object is taken out from the object table 32B. It is difficult and the workability is bad.

  In view of the above-described circumstances, an object of the present invention is to provide a stepladder table that can be installed with a large table and has good workability.

  Means for solving the above problems will be described with reference numerals in the embodiments described later. The invention according to claim 1 is directed to the pair of leg posts 5 and 5 and the upper ends of both leg posts 5 and 5. A main leg 3 composed of a connecting ridge 6, a step board 6 disposed in a plurality of upper and lower stages between both leg pillars 5, 5 of the main leg 3, and an upper end on the rear side of the main leg 3 is the main leg 3 is a table 2 of a stepladder 1 comprising an auxiliary leg 4 attached to the upper side of the main frame 3, and the width of the table 2 is made narrower than the distance between the two legs 5 and 5 of the main leg 3, Movement pivotal support means 10 are interposed between both side surfaces of the pedestal table 2 disposed between the two leg columns 5 and 5 of the leg 3 and the both leg columns 5 and 5 of the main leg 3, respectively. The pedestal 2 in a horizontal posture in which the base end portion 2a of the main pedestal 3 is pivotally supported between the upper ends of both the pillars 5 and 5 and the front end 2b of the pedestal pedestal 2 is projected rearward of the main leg 3. 2 The table 14 is locked by the means 14, the lock is released from the state in which the object table 2 is locked in the horizontal position, and the object table 2 is moved with respect to both the leg pillars 5 and 5 of the main leg 3 through the moving support unit 10. It is characterized by being slid and housed between both leg posts 5 and 5.

  A second aspect of the present invention is the step support table according to the first aspect, wherein the movable pivot means 10 is a pivotal convex portion projecting from the upper end of the inner side surface of each of the pillars 5 and 5 of the main leg 3. 12 and a pivot guide recess 13 for guiding the pivot support 12, which is provided on each side surface of the storage table 2 over substantially the entire length thereof.

  A third aspect of the present invention is the step table for the stepladder according to the first aspect, wherein the movable pivot means 10 includes a pivot projection 12 projecting from the base end of each side surface of the table 2 and a main leg. 3 is provided with a pivot guide recess 13 for guiding the pivot support 12, which is provided over the required length downward from the upper end of the inner side surface of each of the three pillars 5. .

  According to a fourth aspect of the present invention, in the stepladder table according to any one of the first to third aspects, the locking means 14 for locking the main leg 3 in a horizontal posture is an upper end portion of the leg column 5 of the main leg 3 and A pedestal-side pin insertion member 15 provided at a position ahead of the pivotal support position of the storage table 2 in a horizontal posture, and a pedestal-side pin insertion member 15 at a side base end portion of the horizontal storage table 2. And a lock pin 17 inserted over the pin holes 15a and 16a of the pin insertion members 15 and 16, respectively. .

  The effect of the invention by the above-described solution means will be described with reference numerals of embodiments to be described later. The storage base 2 of the invention according to claim 1 is narrower than the interval between both leg pillars 5 and 5 of the main leg 3. However, it can be formed sufficiently longer than the depth of the tread plate 6, and the base end 2 a of the table 2 is pivotally supported between the upper ends of both leg pillars 5, 5 of the main leg 3, and the tip end 2 b is The storage table 2 is locked and used by the locking means 14 in a horizontal posture protruding rearward from the main leg 3, and the lock is released from the locked state in the horizontal posture, and the moving pivot support means 10 is used. Since the storage table 2 is slid with respect to the both leg columns 5 and 5 of the main leg 3 so as to be stored between the both leg columns 5 and 5, the work table 2 includes a work tool, Other necessary objects can be fully loaded, and the storage table 2 can be placed at the upper end of the main leg 3. Since used in a state of protruding longer rearward, extraction of mounting object on stillage 2 is facilitated, thereby improving workability.

  According to the second aspect of the present invention, the moving pivot support means 10 includes the pivot support convex portion 12 projecting from the upper end of the inner surface of each of the pillars 5 and 5 of the main leg 3, and the storage table 2. When each of the side faces is provided with a pivot guide concave stripe portion 13 for guiding the pivot support convex portion 12 over substantially the entire length thereof, on the side of the leg column 5 of the main leg 3. Since the pivot support convex portion 12 is provided and the pivot guide concave groove portion 13 is provided on the side surface of the object table 2, the structure is simple and the manufacture becomes easy.

  According to the invention according to claim 3, the moving pivot support means 10 includes the pivot support protrusions 12 protruding from the base end portions of the side surfaces of the storage table 2, and the leg posts 5 of the main leg 3. When it is provided with a pivot guide recess 13 for guiding the pivot support 12, the side surface of the storage table 2 is provided. Since it is only necessary to provide the pivoting convex part 12 on the side and the pivotal guide concave part 13 on the pedestal 5 side of the main leg 3, the number of parts is small, the structure is simple, and the production is easy. Become.

  According to the fourth aspect of the present invention, the locking means 14 for locking the main leg 3 in the horizontal posture is the upper end portion of the pedestal 5 of the main leg 3 and the pivot position of the table 2 in the horizontal posture. Also, the pedestal side pin insertion member 15 provided at the front position, and the pedestal side provided at a position facing the pedestal side pin insertion member 15 coaxially at the side surface side base end of the horizontal direction of the storage table 2 When the pin insertion member 16 and the lock pin 17 inserted across the pin holes 15a and 16a of both the pin insertion members 15 and 16 are included, the object table 2 is securely locked in a horizontal posture. In addition, the locking operation and the unlocking operation are easy and easy.

It is a perspective view which shows the use condition of the object stand of the stepladder concerning this invention. (a) is a side view of the pedestal table shown in FIG. 1, and (b) is a side view of the stepladder and the pedestal folded. (a) is an enlarged sectional view taken along line XX in FIG. 2 (a), showing a moving support means according to an embodiment, and (b) is an enlarged sectional view taken along line YY in FIG. 2 (a). is there. (a) is a perspective view showing a mounting state of a storage table provided with moving pivot support means according to another embodiment, (b) is a state in which the storage table shown in (a) is housed between both leg pillars of the main leg It is a partial cross section front view which shows. It is explanatory drawing which shows the conventional stepladder with a storage stand, (a) shows a fixed-type storage stand, (b) shows a folding-type storage stand.

  A preferred embodiment of the present invention will be described below with reference to the drawings. In FIGS. 1 and 2, 1 is a folding stepladder and 2 is a table. The stepladder 1 is of a well-known structure, and includes a main leg 3 comprising a pair of leg posts 5, 5 and upper ends of both leg pillars 5, 5, and an upper end on the rear side of the main leg 3. Is attached to the upper side of the main leg 3, a step board 6 disposed in a plurality of upper and lower stages between the two pillars 5, 5 of the main leg 3, and a pair of both sides , 7.

  The auxiliary leg 4 is composed of a pair of leg columns 8 and 8 on both sides and a horizontal shaft 9 connecting the lower ends of both the leg columns 8 and 8, and the upper ends of the both leg columns 8 and 8 are respectively the main legs 3. Are pivotally attached by a pin 27 to a bracket 21 provided at a position separated downward from the upper end portions of the rear side surfaces of both leg posts 5 and 5. Each step board 6 is pivotally attached to both leg posts 5 and 5 of the main leg 3 by pins 22 at the front end portions on both sides, and the rear end portions on both side surfaces of each tread plate 6 are attached to each tread plate rotation rod 7 by pins 23. It is pivotally attached, and the required part on the upper side of each of the tread board rotating rods 7 and the required position of the intermediate part of the pedestal 8 that forms the auxiliary leg 4 are pivotally connected by pins 25 and 26 by an interlocking rod 24. .

  As schematically shown in FIG. 2 (a), a hook portion 28 is provided at the rear end portion of the uppermost tread 6, and this hook portion 28 is disposed between the upper portions of both leg pillars 8, 8 of the auxiliary leg 4. By detachably engaging the suspended support bar 29 from above, each tread board 6 can maintain a horizontal posture as shown in FIGS. 1 and 2 (a). A chuck means (not shown) is provided between the hook portion 28 of the uppermost tread 6 and the support bar 29 on the auxiliary leg body 4 side to keep the hook portion 28 locked to the support bar 29. Each step board 6 can be locked in a horizontal position at the use position of the stepladder 1 shown in FIG. 1 and FIG.

  Accordingly, from the use position of the stepladder 1 as shown in FIGS. 1 and 2A, the hook portion 28 of the uppermost step plate 6 is detached from the support bar 29 on the auxiliary leg body 4 side, and the step plate turning rod 7 is removed. By pulling the main leg 3 and the auxiliary leg 4 together while lifting up, the stepladder 1 as a whole can be folded as shown in FIG.

  Next, the structure of the storage table 2 and the attachment structure to the main leg 3 will be described with reference to FIGS. The storage table 2 is slightly narrower than the distance between the two pillars 5 and 5 of the main leg 3 and has a length sufficiently longer than the depth of the tread 6 as shown in the figure. In a state of being arranged between the both leg columns 5, 5, moving pivot support means 10 are interposed between the both side surfaces of the table 2 and both the leg columns 5, 5 of the main leg 3, respectively. 1 and 2 (a), the base end 2a of the pedestal 2 is pivotally supported between the upper ends of both leg posts 5 and 5 of the main leg 3, and the pedestal 2 The storage table 2 is locked by the locking means 14 in a horizontal posture with the tip 2b of the main body 3 protruding rearward from the main leg 3, and the lock by the locking device 14 is released from the state in which the storage table 2 is locked in the horizontal posture. Then, the object table 2 is slid by sliding the object table 2 with respect to both the leg posts 5 and 5 of the main leg 3 through the movable pivot means 10. Can be accommodated in parallel between both pillars 5 and 5.

  In this case, as shown in FIGS. 1, 2 (a) and 3 (a), the movable pivot support means 10 protrudes from the upper end of the inner side surface of each leg 5 of the main leg 3. It consists of a convex part 12 for pivot support and a concave guide part 13 for pivot support that is provided on each of the left and right side surfaces of the storage table 2 over its entire length and guides the convex part 12 for pivot support. As can be seen from FIG. 3 (a), the pivoting convex portion 12 is provided at an attachment shaft portion 12o that is attached by being inserted into a predetermined position of the upper end portion of the pedestal column 5, and at the distal end portion of the attachment shaft portion 12o. The guide rail 12a is formed by a piece 12a that slides or rolls along the pivot guide recess 13 and the pivot guide recess 13 is attached to each side surface of the storage table 2. 18 is formed.

  Further, the locking means 14 for locking the main leg 3 in a horizontal posture at the upper end of the main leg 3 includes the main leg 3 as shown in FIGS. 1, 2 (a) and 3 (b). A pedestal-side pin insertion member 15 provided at a position ahead of a pivot position of the pedestal table 2 in a horizontal position (a position where the pivot support convex portion 12 is provided), The pedestal table side pin insertion member 16 provided at a position facing the pedestal side pin insertion member 15 coaxially at the side surface side base end portion of the storage table 2 in a horizontal posture, and both the pin insertion members 15, 16. The lock pin 17 is inserted over the pin holes 15a and 16a. In FIG. 3 (b), only the lock means 14 is shown, and the movable support means 10 is not shown.

  In the stepladder 1, when the pedestal 2 is in the horizontal position at the upper end of the main leg 3, the load applied to the pedestal 2 is affected by the pivoting convex portion 12 of the moving pivotal support means 10 and the locking means. 14 is received by a lock pin 17, but as shown in FIGS. 1 and 2, a horizontal beam 11 made of, for example, a pipe material is laid across the pillars 5 and 5 at the upper end on the back side of the main leg 3. In addition, since the horizontal rail 11 can receive the load applied to the storage table 2, it is structurally robust.

  Explaining the operation of the table 2 configured as described above, FIG. 1 and FIG. 2 (a) show that the main leg 3 and the auxiliary leg 4 of the stepladder 1 are opened to a use position at a predetermined angle. The storage table 2 is shown locked at the upper end of the main leg 3 at the use position in the horizontal posture by the locking means 14. As shown in FIGS. 2 (a) and 3 (a), the movable pivoting support means 10 when the storage table 2 is in the use position in the horizontal posture as shown in FIGS. 2 (a) and 3 (a). Is engaged with the base end side of the pivot guide concave strip 13 on the storage table 2 side.

  When the storage table 2 locked in the horizontal position as described above is stored in the main leg 3, the lock pins 17 of the locking means 14 are connected to the pedestal side pin insertion member 15 and the storage table side pin difference. If the object table 2 is extracted from the insertion member 16, the movable support means 10 including the support protrusion 12 and the support guide recess 13 engaged with the support support 12 can move freely. By pulling the yard 2 from the horizontal position shown by a solid line in FIG. 2 (a) to the lower front side of the main leg 3 as shown in the phantom line in FIG. 1, the phantom line in FIG. In this way, the storage table 2 can be stored on the upper side between the leg columns 5 and 5 of the main leg 3. FIG. 2 (b) shows a state in which the storage table 2 is housed in parallel between the leg columns 5 and 5 of the main leg 3 when the stepladder 1 is folded.

  The moving pivot supporting means 10 of the table 2 described above with reference to FIGS. 1 to 3 is provided with a pivoting convex portion 12 at the upper end of the pedestal 5 of the main leg 3, and is pivotally supported on the side of the table 2. A guide recess 13 is provided. As shown in FIGS. 4A and 4B, pivot support protrusions 12 are provided at the base end portions of the side surfaces of the storage base 2. In addition, the pivot guide concave stripe portion 13 may be provided on the inner surface of each of the pillars 5 of the main leg 3.

  That is, the moving pivot support means 10 shown in FIGS. 4 (a) and 4 (b) includes pivot support projections 12 projecting from the base end portions of the side surfaces of the storage base 2, and the main legs 3. It is provided on the inner surface side of the pedestal 5, and is composed of a pivot guide recess 13 that guides the pivot support 12. The pivot guide recess 13 is an inner surface of the pedestal 5. It consists of a guide groove 19 formed over the required length from the upper end to the lower side, and the pivoting convex part 12 is attached to the side surface of the storage table 2, and the guide groove of the pivoting guide concave line part 13. 19 is formed by a mounting shaft portion 12o that slides along 19 and a piece 12a that is provided at the distal end portion of the mounting shaft portion 12o and slides within the pedestal 5.

  When the storage table 2 provided with the moving pivot support means 10 as shown in FIG. 4 is used in a horizontal posture, the lock pin 17 of each lock means 14 is inserted into the pin insertion member 15 on the pedestal side and the storage table side. , 16, the storage table 2 is held in a horizontal posture, and the load applied to the storage table 2 is received by the crosspiece 11 provided at the upper end of the rear side of the pedestal 5, and the moving support means 10. Are supported by the pivot projection 12 and the lock pin 17 of the lock means 14. When the storage table 2 is housed in the main leg 3 from the horizontal position shown by the solid line in FIG. 4A, the lock pins 17 of the lock means 14 are moved from the pin insertion members 15 and 16. When the table 2 is extracted and unlocked, the storage table 2 can be moved by the movable support means 10 including the storage table side support projection 12 and the pedestal side support guide recess 13. 4 is lowered while pulling it toward the near side from the use position of the horizontal posture shown by the solid line in FIG. 4A, so that the pedestal table 2 is attached to both leg pillars 5 of the main leg 3 as shown in the phantom line of FIG. , 5 can be stored on the upper side. In FIG. 4B, when the storage table 2 is housed between the two pillars 5 and 5 of the main leg 3, the storage table side pivoting convex portion 12 is changed to the pillar side pivot support guide concave portion 13 ( The state locked to the lower end of the guide groove 19) is indicated by a virtual line. In this storage state, the upper end side of the storage table 2 is supported by the horizontal rail 11.

  The pedestal 2 of the stepladder 1 described above is formed to be sufficiently longer than the depth of the tread 6 although it is narrower than the distance between the two pillars 5 and 5 of the main leg 3 (see FIGS. 1 and 2). As shown in a), the base end 2a of the storage base 2 is pivotally supported between the upper ends of both leg posts 5 and 5 of the main leg 3, and the front end 2b is projected rearward of the main leg 3. The storage table 2 is used by being locked by the locking means 14 in the horizontal posture, and the lock is released from the state locked in the horizontal posture, and the storage table 2 is moved to the main leg 3 via the moving pivot support means 10. The two pedestal columns 5 and 5 are slid to be accommodated between the two pedestal columns 5 and 5, so that the work table 2 is provided with a work tool such as a nail or a hammer during the work with the stepladder 1, and other necessary tools. Can be used to place objects sufficiently, and with the storage table 2 protruding long toward the rear side of the upper end of the main leg 3 Therefore, it becomes easy to take out the placed object on the object table 2 and workability can be improved.

  Moreover, as the movement pivot support means 10 of this storage stand 2, as shown in FIGS. 1-3, the convex for convex support projected from the inner surface upper end part of each leg pillar 5, 5 of the main leg 3 is provided. It is possible to use a member comprising a portion 12 and a pivot guide concave portion 13 which is provided on each side surface of the storage table 2 over substantially its entire length and guides the pivot convex portion 12. 4 (a) and 4 (b), the pivoting convex portion 12 projecting from the base end portion of each side surface of the storage base 2, and the inner surface upper end of each leg column 5 of the main leg 3 It is possible to use a pivot guide concave groove portion 13 which is provided from the portion downward over a required length and guides the pivot convex portion 12. In the former case, it is only necessary to provide a pivoting convex portion 12 on the pedestal 5 side of the main leg 3 and form a pivoting guide concave portion 13 on the side surface of the table 2, and the latter moving pivotal support. In the case of the means 10, the pivoting convex portion 12 is provided on the side surface side of the storage table 2, and the pivoting guide concave portion 13 (guide groove 19) is formed on the pedestal 5 side of the main leg 3. In any case, since the structure is simple, it is easy to manufacture.

  Further, as the locking means 14 for locking the main leg 3 in the horizontal position, for example, as shown in FIG. 3 (b), the storage table 2 at the upper end of the leg 5 of the main leg 3 and in the horizontal position. The pedestal-side pin insertion member 15 provided at a position ahead of the pivotal support position of the pedestal, and a position facing the pedestal-side pin insertion member 15 coaxially at the side surface side base end portion of the storage table 2 in a horizontal posture. By using the object storage side pin insertion member 16 provided and the lock pin 17 inserted over the pin holes 15a and 16a of the both pin insertion members 15 and 16, the object storage table 2 is horizontally disposed. It can be securely locked to the posture, and the lock operation and unlock operation can be easily and easily performed.

  The locking means 14 is not limited to the structure shown in FIG. 3B, but may be any structure as long as the main leg 3 can be locked in a horizontal posture.

  In the above embodiment, the stepladder is in the use state in which the main leg is in a backward tilted position and the auxiliary leg is in a forward tilted position, and the upper end of the auxiliary leg is on the upper side of the main leg from the rear side of the main leg. However, the storage base of the present invention can also be applied to a structure in which the upper end side of the main leg rises perpendicularly to the horizontal from the upper end of the auxiliary leg. It is.

DESCRIPTION OF SYMBOLS 1 Stepladder 2 Storage stand 3 Main leg body 4 Auxiliary leg body 5 Pillar column 6 Horizontal beam 11 Horizontal rail 10 Movement support means 12 Pivot part 13 Pivot guide concave part 14 Lock means

Claims (4)

  A main leg consisting of a pair of pedestals on both sides and an upper end of both pedestals, a step board disposed in multiple upper and lower steps between both pedestals of the main leg, and an upper end on the rear side of the main leg Is a pedestal pedestal made up of auxiliary legs attached to the upper side of the main leg, wherein the width of the pedestal is made narrower than the distance between the legs of the main leg, Moving pivotal support means are provided between both side surfaces of the storage table placed between and the both legs of the main leg, and in use, the base end of the storage table is placed between the upper ends of both legs of the main leg. The storage table is locked by the locking means in a horizontal posture in which the storage table is pivotally supported and the tip of the storage table protrudes to the rear of the main leg, and the lock is released from the state in which the storage table is locked in the horizontal posture. And a stepladder that slides the storage table with respect to both pedestal columns of the main leg through the moving pivot support means and stores it between the pedestal columns. Table.   The movable pivot support means is provided with a pivot projection projecting from the upper end of the inner side surface of each pedestal of the main leg, and a substantially full length on each side surface of the storage base. The stepladder table according to claim 1, further comprising a pivot guide recess for guiding the convex portion.   The movable support means are provided over the required length downward from the upper end of the inner side surface of each pedestal of the main leg, and the convex part for the pivot projecting at the base end of each side of the storage base. The stepladder table according to claim 1, further comprising: a pivot guide recess for guiding the pivot support convex portion.   The locking means for locking the main leg in a horizontal posture is a pedestal side pin insertion member provided at the upper end of the main pillar's pedestal and at a position ahead of the pivot position of the pedestal in the horizontal posture; The pedestal table side pin insertion member provided at a position facing the pedestal side pin insertion member coaxially at the side surface side base end portion of the storage table in a horizontal posture, and across the pin holes of the both pin insertion members The stepladder table according to any one of claims 1 to 3, further comprising a lock pin to be inserted.

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