CN1776183A - Ladder stool - Google Patents
Ladder stool Download PDFInfo
- Publication number
- CN1776183A CN1776183A CN 200510077645 CN200510077645A CN1776183A CN 1776183 A CN1776183 A CN 1776183A CN 200510077645 CN200510077645 CN 200510077645 CN 200510077645 A CN200510077645 A CN 200510077645A CN 1776183 A CN1776183 A CN 1776183A
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- China
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- top board
- step stool
- people
- sole
- central portion
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Abstract
The invention provides a footstool capable of ensuring safety of work without missing a person's step from the footstool so that feet are always induced to put on the central part in the fore and aft direction of a top board to put thereby the center of gravity of the body within a range of the circumference of the top board when the person gets on the top board to carry out work. In the footstool formed by providing the top board (2) on the top sections of a pair of ladder-like leg bodies (1, 1) in front and behind, the upper surface of the top board (2) forms the central part thereof in the shape of a projected surface so as to put the arch (A) of the foot of the person (M) on the central part in the fore and aft direction.
Description
Technical field
The present invention relates to a kind of step stool, described step stool constitutes by on the top of front and back a pair of ladder shape leg body flat top board being set, and for example, when the housewife takes the article that are positioned at indoor eminence etc., but the light pin steps down in top and uses.
Background technology
Step stool as prior art, can't enumerate known documents such as patent gazette particularly, but employed step stool of past is provided with flat top board on the top of front and back a pair of ladder shape leg body constitutes, usually the upper end of two leg bodies of a pair of ladder shape leg body is connecting with the form of pivot before and after, thereby this step stool collapsible structure that can change for its ladder shape leg body posture, it is that its posture can change to: the folding leg posture of closing, that is the posture that the lower end side of its two legs body is closed; Open the leg posture with the lower end side of two leg bodies has been opened.
Step stool according to prior art, because the upper surface of its top board is horizontal, so the people of use step stool in use, in any case because the tendency that its health all leans out to the outside of top board, so probably pin is stepped down on the end of the fore-and-aft direction central portion that departs from top board, body's center of gravity is positioned at outside the outer peripheral edges scope of top board mostly, and outside center of gravity is in top board the time, the posture of people on top board becomes very unstable and loses balance, exists the danger that the people slips and falls down and fall down from step stool.
Summary of the invention
In view of problem as described above, the purpose of the step stool that provides of the present invention is: when the people has stepped down in pin on the top board, pin that can guide people steps down on the fore-and-aft direction central portion of top board usually, and make body's center of gravity be positioned at the outer peripheral edges scope of top board thus, slip and can guarantee the step stool of operational security thereby eliminate from step stool.
The reference symbol of the embodiment of chatting after additional below is to describing for the means that solve above-mentioned problem.Promptly, technical scheme 1 of the present invention is a kind of step stool, this step stool constitutes by on the top of front and back a pair of ladder shape leg body 1,1 top board being set, and it is characterized in that: the central portion of the upper surface of top board 2 forms convex-shaped in the mode that the arch of the foot A of the sole of people M can be positioned on its fore-and-aft direction central portion.
Technical scheme 4 of the present invention is on the basis of technical scheme 1～3 described step stool, it is characterized in that: top board 2 is divided into two parts by the front and back, edge and pivotally connected each other a pair of half dividing body 2a, the 2b in front and back of opposed end constitutes, and this two near points cuts body 2a, 2b and is installed on the upper end separately of two ladder shape leg bodies 1,1.
The reference symbol of the embodiment of chatting after additional below describes the invention effect that forms by above-mentioned solution.Promptly, because the stool of step stool 2 for climbing up with the light pin, think that the arch of the foot of the sole that makes people M is positioned on the fore-and-aft direction central portion, the central portion of the upper surface of top board 2 is formed convex-shaped, in this way, people M just is not easy to step on the end side of top board 2, but inevitably pin is stepped down on the fore-and-aft direction central portion of top board 2, thereby body's center of gravity will be positioned at the inboard scope of the outer peripheral edges of top board 2 naturally, and can maintain work posture under the stable status thus, slip and guarantee the safety of operation thereby eliminate from step stool.
According to technical scheme 2 of the present invention,, the arch of the foot A of the sole of people M is positioned on its fore-and-aft direction central portion because the upper surface of top board 2 is formed convex-shaped; And its both ends are formed concave shape respectively, the B of tiptoe portion and the heel portion C of the sole of people M are positioned in its rear and front end portion, so when people M climbs up top board 2 and carries out operation, the arch of the foot A of each sole is located on the convex surface part 3 of fore-and-aft direction central portion of top board 2 about people M, and the B of tiptoe portion of sole and heel portion C just lay respectively in the concave surface portion 4,4 at both ends, thus, the sole integral body of people M just becomes the comparatively stable status that has been maintained on the top board 2, thereby people M can carry out the higher operation of stability.
According to technical scheme 3 of the present invention, because when people M steps down in pin on the pedal 7 of ladder shape leg body 1, the arch of the foot A of sole is positioned on the convex surface part of pedal 7, so pin is stepped down on the pedal 7, thereby can be safely about carrying out on the ladder shape leg body 1, and ladder up and down with a light heart under the state of arch of the foot A soft feel that can be under foot.
According to technical scheme 4 of the present invention, can simply easily make two ladder shape leg bodies 1,1 and close the leg posture and opening the top board 2 that can carry out the Ladder foldable into stool of posture changing between the leg posture, and realize the purpose of its cheap for manufacturing costization.
Description of drawings
Fig. 1 is the stereogram of expression step stool of the present invention.
(a) is the front view of step stool among Fig. 2, (b) is lateral view, (c) is the lateral view of the state after folding.
(a) is the lateral view that the two near points that will constitute top board 2 cuts the state that body has been separated from each other among Fig. 3, (b) be after two near points is cut body and couples together, two ladder shape leg bodies 1,1 are in out the lateral view that two near points under the state of leg posture cuts body, (c) are that two ladder shape leg bodies 1,1 are in the lateral view that two near points under the state that closes the leg posture cuts body.
Fig. 4 is the key diagram of effect of the top board 2 of expression step stool.
Fig. 5 is the enlarged side view of pedal 7.
Fig. 6 is the key diagram of the user mode of expression step stool.
The specific embodiment
Fig. 1 is the stereogram of expression step stool of the present invention.(a) is the front view of step stool among Fig. 2, (b) is lateral view, (c) is the lateral view of the state after folding.In addition, (a) is the lateral view that the two near points that will constitute top board 2 cuts the state that body 2a, 2b be separated from each other among Fig. 3, (b) be after two near points is cut body 2a, 2b and couples together, two ladder shape leg bodies 1,1 are in out the lateral view that two near points under the state of leg posture cuts body 2a, 2b, (c) are that two ladder shape leg bodies 1,1 are in the lateral view that two near points under the state that closes the leg posture cuts body 2a, 2b.Fig. 4 is the key diagram of effect of the top board 2 of expression step stool.Fig. 5 is the enlarged side view of pedal 7.In addition, Fig. 6 is the key diagram of the user mode of expression step stool.
This step stool is on the top of front and back a pair of ladder shape leg body 1,1 top board 2 to be set and to constitute, and as shown in Figure 4, the central portion of the upper surface of top board 2 forms convex-shaped, and the arch of the foot A of the sole of people M is positioned on the fore-and-aft direction central portion; And its both ends are formed concave shape respectively, and the B of tiptoe portion of sole and heel portion C are positioned in the portion of rear and front end.In addition, the concave surface portion 4,4 of rear and front end portion is respectively same shape, and the B of tiptoe portion of sole and heel portion C and any concave surface in front and back portion 4 can both be corresponding mutually.Top board 2 is divided into two parts along front and back, the form with pivot a pair of half dividing body 2a, the 2b that opposed end is joined to one another is made of.Two near points cuts body 2a, 2b and is mounted and fixed on the upper end separately of two ladder shape leg bodies 1,1.
The two near points of the top board 2 on the upper end that a pair of ladder shape leg body 1,1 in front and back is fixed on separately cuts body 2a, 2b and is connecting with the form of pivot mutually, and, by left and right sides pair of links mechanism 5,5, its posture can be altered to freely: shown in Fig. 2 (a) like that, what the lower end side of two leg bodies 1,1 was split into inverted v-shaped opens the leg posture; With shown in Fig. 2 (c) like that, the lower end side of two leg bodies 1,1 is closed, what be folded into that two leg bodies 1,1 are overlapped into almost parallel closes the leg posture.
Shown in Fig. 2 (a), each ladder shape leg body 1 crossbearer more piece pedal 7 and constituting between pair of right and left pillar 6,6, pair of right and left pillar 6.6 is widened and general arrangement becomes Eight characters shape a little in its underpart side, and the upper surface of each pedal 7 forms the intermediate portion mild convex-shaped higher than rear and front end portion.
Shown in Fig. 3 (a), constituting one of top board 2 divides half-and-half and cuts body 2a, 2b and be made of aluminium extruded section respectively, one of them half dividing body 2a is made of top board main part 8 and installation portion 9 and the big footpath tube 10a of portion, and top board main part 8 has formed convex portions 3o and the concave surface portion 4 as the single lateralized half branch of convex surface part 3; Installation portion 9 is entrenched on the upper end of pillar 6 of leg body 1; The big footpath tube 10a of portion is used to form the pivot on the end that is set at concave part 3o.The formation of another one half dividing body 2b comprises equally: formation is as the convex portions 3o of the single lateralized half branch of convex surface part 3 and the top board main part 8 of concave surface portion 4; Be entrenched in the installation portion 9 on the upper end of pillar 6 of leg body 1; And the path tube 10b of portion that is used to form the pivot on the end that is set at concave part 3o.
Like this, if two near points is cut body 2a, 2b to carry out pivot and props up connection, so just two near points can be cut body 2a, 2b and stagger to the left and right mutually, and insert the path tube 10b of portion of second half dividing body 2b in the big footpath 10a of tube portion of half dividing body 2a therein from the state shown in Fig. 3 (a).In this way, the big footpath 10a of tube portion of half dividing body 2a wherein and the path tube 10b of portion of second half dividing body 2b just as Fig. 3 (b) shown in like that, formation is connected to the concentric pivot T that can rotate mutually.The two near points that this Fig. 3 (b) expression will interconnect cuts the state that body 2a, 2b become out the leg posture, and Fig. 3 (c) expression is cut body 2a, 2b with two near points makes it become the state that closes the leg posture after folding.
As mentioned above, be joined to one another by the end in opposite directions of two near points being cut body 2a, 2b by means of pivot T, form the top board 2 shown in Fig. 3 (b), (c), opening in the leg posture shown in Fig. 3 (b), the rear and front end portion of the upper surface of this top board 2 is a concave surface portion 4,4, and the pars intermedia of front and back two concave surface portions 4,4 becomes convex surface part 3.Formed like this top board 2, the longitudinally both ends of the installation portion 9 by making half and half dividing body 2a, 2b be entrenched in ladder shape leg body 1 about on two pillars 6,6 after, carry out rivet R in conjunction with like this, top board 2 is installed on the leg body 1.Top board 2 is divided into front and back one that its end behind two parts connects with the form of pivot each other by the front and back, edge to be divided half-and-half and cuts body 2a, 2b and constitute, and two half dividing body 2a, 2b can be installed on the upper end separately of two ladder shape leg bodies 1,1.Therefore, can simply easily make posture and can be altered to the top board 2 that closes the leg posture and open the Ladder foldable into stool of leg posture, and can realize the purpose of cheap for manufacturing costization.
Shown in Fig. 3 (a)～(c), on the upper surface of the half and half dividing body 2a, the 2b that form top board 2, be formed with the anti-skidding of many direction extensions to the left and right along fore-and-aft direction devices spaced apart ground in addition with raised line 11.
The pedal 7 of each ladder shape leg body 1 also is made of aluminium matter extrudate, as shown in Figure 5, it comprises pallet body portion 15 and installation portion 16, upper surface as the pallet body portion 15 of tread, its fore-and-aft direction pars intermedia forms the mild convex-shaped higher than rear and front end portion, and, same with half dividing body 2a, the 2b of top board 2, be formed with the anti-skidding of many direction extensions to the left and right with raised line 12 along fore-and-aft direction devices spaced apart ground.And installation portion 16 is by making pedal long side direction both ends and be entrenched on ladder shape leg body about 1 two pillars 6,6 and carrying out rivet in conjunction with being mounted.
In addition, as the simple expression of Fig. 1, on the both ends, the left and right sides of the half and half dividing body 2a, the 2b that form top board 2, be embedded with plastic end case 13, in addition, on the both ends, the left and right sides of each pedal 7 on the ladder shape leg body 1, be embedded with plastic end case 14.
When stating the step stool that is constituted like that in the use, for example shown in the image pattern 6 like that, when the housewife of family opens and closes the sliding door 17 of the storage room be positioned at the closet eminence and dress when getting article etc., if people (housewife) M is by stepping on the top board 2 of step stool on the pedal 7 that pin is stepped down in ladder shape leg body 1 from side nearby, so because the central portion of the upper surface of this top board 2 is formed convex-shaped in the mode that the arch of the foot A of the sole of people M is positioned on the fore-and-aft direction central portion, so people M is not easy to stand on the end side of top board 2, pin must be stepped down on the convex surface part 3 of top board central portion, thereby as shown in Figure 6, it is the inboard scope on boundary that body's center of gravity G will be positioned at naturally with the periphery of top board 2, can maintain the operation figure under the stable state thus, slip from step stool and and guarantee the safety of operation thereby can eliminate.
And, the upper surface of this top board especially, for the arch of the foot A of the sole that makes people M can be positioned on the fore-and-aft direction central portion, its central portion is formed convex-shaped; And for making in the B of tiptoe portion of sole and the rear and front end portion that heel portion C can be positioned at it, its both ends are formed concave shape respectively.Therefore, when to top board 2, carrying out operation on the people M, as shown in Figure 4, the arch of the foot A of each sole is positioned on the convex surface part 3 of fore-and-aft direction pars intermedia of top board 2 about people M, the B of tiptoe portion of sole and heel portion C lay respectively in the concave surface portion 4,4 at both ends, by above-mentioned this mode, the sole integral body of people M becomes the comparatively stable status that is maintained on the top board 2, thereby people M can carry out the higher operation of stability.
Accident when using step stool in addition takes place because of falling on top board 2 mostly, and is the state that erects tiptoe in order to ensure higher a little again height mostly in accident process.But because that the upper surface of top board 2 of the present invention is formed aforesaid convex-concave is planar, so people M does not allow to be easy to do and erects the action of tiptoe, but will take work posture under the state of having stablized naturally, it is the inboard scope on boundary that body's center of gravity G is positioned at the periphery of top board 2, thereby can not slip, thereby guarantee the safety of operation from step stool.
In addition, because the upper surface (upper surface of pallet body portion 5) of each pedal 7 is formed convex-shaped, so when people M steps down in pin on the pedal 7 of ladder shape leg body 1, the arch of the foot A that makes sole is positioned on the convex surface part of pedal 7, thus can be under stable status pin be stepped down on the pedal 7 and safely about carrying out on the ladder shape leg body 1, and, ladder up and down with a light heart under the state of arch of the foot A soft feel that can be under foot.
Claims (4)
1. step stool, this step stool constitutes by on the top of front and back a pair of ladder shape leg body top board being set, and it is characterized in that: the central portion of the upper surface of top board forms convex-shaped in the mode that the arch of the foot of the sole of people M can be positioned on its fore-and-aft direction central portion.
2. step stool as claimed in claim 1, it is characterized in that: the upper surface of top board forms following shape, promptly, its central portion is so that the mode that the arch of the foot portion of people's sole can be positioned on its fore-and-aft direction central portion forms convex-shaped, and its both ends are so that the mode that the tiptoe portion of people's sole and heel portion can be positioned in its rear and front end portion forms concave shape respectively.
3. step stool as claimed in claim 1 or 2 is characterized in that: each ladder shape main body by the pair of right and left pillar and between two pillars the pedal of institute's crossbearer constitute, the pars intermedia of the upper surface of each pedal is formed the mild convex-shaped higher than rear and front end portion.
4. as each the described step stool in the claim 1～3, it is characterized in that: top board is divided into two parts by front and back and the pivotally connected each other half a pair of dividing body of front and back of its opposed end constitutes, and this two near points cuts body and is installed on the upper end separately of two ladder shape leg bodies.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP331973/2004 | 2004-11-16 | ||
| JP2004331973A JP4077443B2 (en) | 2004-11-16 | 2004-11-16 | Springboard |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1776183A true CN1776183A (en) | 2006-05-24 |
Family
ID=36624264
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200510077645 Pending CN1776183A (en) | 2004-11-16 | 2005-06-17 | Ladder stool |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP4077443B2 (en) |
| CN (1) | CN1776183A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104563839A (en) * | 2015-01-31 | 2015-04-29 | 朱建国 | Step ladder capable of adjusting height |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4746008B2 (en) * | 2007-05-29 | 2011-08-10 | アルインコ株式会社 | stepladder |
| JP5303197B2 (en) * | 2008-06-11 | 2013-10-02 | 長谷川工業株式会社 | stepladder |
| JP7421174B2 (en) * | 2019-11-26 | 2024-01-24 | 長谷川工業株式会社 | stepladder |
-
2004
- 2004-11-16 JP JP2004331973A patent/JP4077443B2/en active Active
-
2005
- 2005-06-17 CN CN 200510077645 patent/CN1776183A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104563839A (en) * | 2015-01-31 | 2015-04-29 | 朱建国 | Step ladder capable of adjusting height |
Also Published As
| Publication number | Publication date |
|---|---|
| JP4077443B2 (en) | 2008-04-16 |
| JP2006144252A (en) | 2006-06-08 |
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|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Open date: 20060524 |