CN103767384A

CN103767384A - Collapsible work bench apparatus

Info

Publication number: CN103767384A
Application number: CN201310444489.7A
Authority: CN
Inventors: B·德施纳
Original assignee: WAL-EZ Ltd
Current assignee: WAL-EZ Ltd; Wal Ez Ltd
Priority date: 2012-10-18
Filing date: 2013-09-23
Publication date: 2014-05-07
Also published as: CA2792668C; CA2792668A1

Abstract

A work bench, mountable on a pair of vertical elongate members, adapted to be mounted on a wall. The work bench can be collapsed from an extended position to a stowed position coplanar with the elongate members. The elongate members each have longitudinally spaced notches. A bracing member is provided with a pair of trunnion members that extend from the bracing member and are releasably pivotably coupled to a pair of notches in respective of the pair of elongate members; the bracing member further having a distal end for releasably engaging the working surface of the work bench. When in the extended position, the distal end of the bracing member releasably engages the work bench to support the work bench; when in the collapsed position the work bench overlays the bracing assembly.

Description

Retractable work stools equipment

Technical field

The present invention relate in general to a kind of have can be installed to roughly vertical equipment of the retractable work stools on surface of wall or other.

Background technology

There is its space, many working regions to be restricted, the inside of such as commercial truck, garage, greenhouse, locker, machine room etc.Particularly, in this working region, be difficult to set up traditional work stools; In the time that conventional operation stool is arranged on these regions, becomes and be difficult to find space in remaining space, to carry out other work.Therefore, having work stools and/or the support that can in the time not using, pack up simply or remove can be particularly useful in this confined space.Have can support safely large weight and can regulate height this work stools can be also useful.

Summary of the invention

According to an aspect of the present invention, provide a kind of for being installed to the equipment on vertical surface, it comprises framework, work stools and the bearing assembly of the compacted location that can be retracted into the framework that reclines.Framework has at least two extending longitudinally and spaced longitudinal members, and each longitudinal member comprises the multiple longitudinally-spaced breach extending internally from the leading edge of longitudinal member.At least some breach of each longitudinal member are vertically aimed at at least some breach of another longitudinal member in the time that frame vertical straight is located.The a pair of gudgeon member that can comprise respectively the lateral edges of at least one recess and extend from lateral edges that work stools has working surface, extends from working surface.These gudgeon members releasably pivotable are connected to the breach of first pair of aligning.Bearing assembly has at least one supporting member and from supporting member extends and releasably pivotable is connected to second pair of breach of first pair of breach below a pair of gudgeon member.Supporting member also comprises the far-end that engages releasedly work stools.Bearing assembly and work stools can be located with respect to framework respectively at extended position and stowed position.In the time that work stools and bearing assembly are positioned at its extended position, the far-end of supporting member engages work stools releasedly, makes bearing assembly supporting work stools.In the time that work stools and bearing assembly are positioned at its stowed position, work stools covers bearing assembly; In the time that the lateral edges of work stools comprises recess, these recesses receive the gudgeon member of bearing assembly, and work stools and bearing assembly and framework can be located roughly coplanarly.

Supporting member can be in the time that bearing assembly be positioned at extended position with respect to framework with an angle orientation, in this case, the far-end of supporting member, with the taper angle convergent of the angle corresponding to supporting member, makes far-end in the time engaging with work stools contact with work stools is concordant.Work stools can be included in bearing assembly and engages when work stools from working surface to downward-extension and be positioned in abutting connection with the anterior lip of the far-end of supporting member.Work stools also can comprise multiple recesses along each lateral edges, and described multiple recesses are spaced apart from each other with the spacing of the spacing between the breach corresponding in framework.

Bearing assembly can have the thickness that is less than or equal to frame depth, and bearing assembly gudgeon member is connected to second pair of breach in this case, makes bearing assembly in the time being positioned at stowed position, be positioned at the degree of depth of framework completely.Particularly, the gudgeon member of work stools can be connected to first pair of breach, makes in the time that work stools is positioned at stowed position, and working surface is concordant with frame depth or in the degree of depth of framework.

This equipment also can comprise support, and support has working surface, is connected to working surface and is connected to releasedly the gudgeon member of the 3rd pair of alignment notch, and is connected at least one bracket supports of framework and support.Support can be positioned at extended position and stowed position with respect to framework.

At least one breach can have L shaped shape, and it comprises extend back part and downward extension, and in this case, the gudgeon member of work stools and bearing assembly is seated in downward extension pivotly.Alternatively, at least one breach can be straight, and with backward and downward angle extend in longitudinal member.In another substitutes, at least one breach can be bending, and backward and extend downwardly in longitudinal member.

According to a further aspect in the invention, provide that a kind of it has framework for being installed to the external member of equipment on vertical surface, wherein work stools and bearing assembly can be retracted into compacted location with respect to framework.Framework has at least two extending longitudinally and spaced longitudinal members, each longitudinal member comprises the multiple longitudinally-spaced breach extending internally from the leading edge of longitudinal member, in the time that frame vertical straight is located, at least some breach of each longitudinal member are vertically aimed at at least some breach of another longitudinal member.The lateral edges that work stools has working surface, extend from working surface and extend and be connected to for pivotable releasably a pair of gudgeon member of first pair of alignment notch of framework from lateral edges or working surface.Bearing assembly has at least one supporting member and extends and be connected to for pivotable releasably a pair of gudgeon member of second pair of breach of first pair of breach below of framework from supporting member.Supporting member comprises the far-end that engages releasedly work stools.In the time of bearing assembly, work stools and frame assembled, bearing assembly and work stools can be located with respect to framework respectively on extended position and stowed position.In the time that work stools and bearing assembly are positioned at its extended position, the far-end of supporting member engages work stools releasedly, makes bearing assembly supporting work stools.In the time that work stools and bearing assembly are positioned at its stowed position, work stools covers bearing assembly, makes work stools and bearing assembly and longitudinal member roughly coplanar.

Each lateral edges also can comprise at least one recess, in the time that work stools and bearing assembly are positioned at its stowed position, work stools covers bearing assembly, make the gudgeon member of the recess reception bearing assembly of work stools, thereby work stools and bearing assembly and framework is roughly coplanar.

Accompanying drawing explanation

Fig. 1 is the right side perspective view having according to a kind of equipment of the work stools packed up of embodiment, and wherein work stools illustrates and is positioned at extended position.

Fig. 2 is the right side perspective view with the equipment that the work stools that is positioned at stowed position is shown.

Fig. 3 is a part for work stools and for engaging the detailed perspective view of engagement end portion of bearing assembly of work stools downside.

Fig. 4 is the front perspective view with the equipment that the bearing assembly that is positioned at stowed position is shown.

Fig. 5 is the left side perspective view with the equipment that the work stools that is positioned at extended position is shown.

Fig. 6 has according to the work stools packed up of the second embodiment and two left side perspective view that can pack up the equipment of support, and its medium-height trestle illustrates and is positioned at extended position.

Fig. 7 is the right side perspective view of the second embodiment of this equipment, and one in its medium-height trestle illustrates and is positioned at extended position, and another in support illustrates and be positioned at stowed position.

Fig. 8 is for according to the perspective view of the external member of the work stools the packed up equipment that comprises framework, work stools and bearing assembly of another embodiment.

The specific embodiment

With reference to figure 1-5 and according to a kind of embodiment, equipment 10 is provided with the retractable work stools 12 that can be positioned at the stowed position shown in the extended position shown in Fig. 1 and Fig. 2.Although this embodiment is take a work stools 12 as feature, equipment 10 optionally arranges the work stools (not shown) of varying number.Equipment 10 comprises the roughly framework 14 on vertical surface of the wooden partition for being installed to for example wall or lorry.Although not shown, can mounting bracket is set or framework 14 is installed to vertical surface by other suitable erecting device.Mounting bracket can weld or be fixed to similarly framework 14, and has the opening for screw or other fastener, to support is connected to vertical surface.

Direction term is if " afterwards ", " front ", " vertically ", " level ", " top " and " below " are by the after this description of the equipment 10 when being installed to as shown in drawings vertical surface.How this direction term, only with helping structure and the correlation thereof of the parts in reader understanding's equipment 10, in use locates or how to apply any restriction with respect to another object localization for equipment 10 and be not intended to (unless clearly expression).

Framework 14 comprises pair of parallel isolated longitudinal member 16, and it can be installed with roughly vertical orientation in operation.Framework 14 also comprises multiple cross members (back member 18) and top and bottom member 20, and described cross member links together longitudinal member 16.All vertical and

horizontal members

16,18,20 can be soldered, bolt or fixedly secure together by alternate manner, to form the frame structure of relative stiffness.All

members

16,18,20 can or provide other material of similar mechanical performance to make by metal.One row's installing hole (not shown) is arranged in back member 18, so that framework 14 can be fixed to wall or other is vertically surperficial.

With reference to figure 8, framework 14 is alternately formed by single piece of material (backboard), one or more curved edges 90 of sheet are spent in this case, to form one or more longitudinal members 16 and top and bottom member 20, these

members

16,20 can tighten together by technology known in the art.Can cut out rectangular aperture from sheet, with saving in weight and the material of other parts of forming device 10 is provided, remaining sheet material is as cross member 18.This method is used to provide especially the structure of relative stiffness and avoids the needs that each parts of framework 14 are carefully aimed at and fitted together.In alternate embodiments, backboard does not have otch, and replaces back member 18 to be separately provided with single piece of material, and it links together longitudinal member and top and

bottom member

16,20.

Each longitudinal member 16 has multiple towards front breach 22, and the breach along the longitudinal length of member 16 is roughly evenly spaced apart.Each breach 22 is backward also then to downward-extension (in the time that longitudinal member 16 is vertically installed), and formation " L " shape.Each breach 22 for each longitudinal member 16 is aimed at location with the corresponding breach 22 in another longitudinal member 16, makes two corresponding breach 22 in the time that longitudinal member 16 is vertically installed, be positioned at equal height.Alternatively, but not shown, each breach 22 can be roughly straight, and with inwardly and extend in longitudinal member 16 to lower angle.In unshowned another replacement scheme, each breach 22 can be bending and inwardly and extend downwardly in longitudinal member 16.

Equipment 10 also comprises bearing assembly 28, and bearing assembly comprises a pair of extending longitudinally and spaced supporting member 30 connecting by a pair of laterally extending connecting elements 32, supporting member 30 is spaced apart from each other and almost parallel.Although shown embodiment shows the bearing assembly 28 with two supporting members 30, bearing assembly 28 alternately has the supporting member of varying number, for example one or three (not shown).Supporting member 30 in current embodiment comprises respectively U-shaped flange, and connecting elements 32 comprises respectively the cylindrical rod with different length; Flange can be made up of metal or other suitable material.The connecting elements 32 (" short connecting elements ") with shorter length is extending near its far-end between supporting member 30.By contrast, the connecting elements 32 (" long connecting elements ") with length is extending near its near-end between supporting member 32, and extend past the sidewall of each supporting member 30, multiple parts of bar 32 are stretched out from the lateral wall of each supporting member 30.The length of long connecting elements 32 is enough to make extension (" gudgeon member ") can engage releasedly the breach 22 of a pair of aligning of longitudinal member 16, and the diameter of gudgeon member is selected to and allows gudgeon member with minimum play or there is no play in the interior pivotable of breach 22, sets up and can pivotable connect thus between bearing assembly 28 and framework 12.The L shaped shape of breach 22 allows gudgeon member from upwards and subsequently outside lifting of framework 14, sets up releasable connection thus between bearing assembly 28 and framework 12.

Similarly, work stools 12 comprises the outwardly directed a pair of gudgeon member 34 of lateral edges 35 from work stools 12, and it can engage the breach 22 of a pair of aligning.Be similar to the gudgeon member of bearing assembly 28, the gudgeon member 34 of work stools 12 can be cylindricality, and have allow gudgeon member 34 with can pivotable and releasable mode be connected to the diameter of breach 22.

Work stools 12 also comprises the working surface of general plane, and in the time that work stools 12 is positioned at horizontal level, this offside edge 35 is from the sidepiece of working surface to downward-extension.Traditionally, the metal of monolithic or other suitable material can be used to form working surface and lateral edges, and wherein lateral edges bending is in place.At the leading edge of work stools 12 are lips 36 of the anterior width of spanning operation stool 12.Be similar to lateral edges 35, lip 36 in the time that working surface is positioned at horizontal level from working surface to downward-extension.

Alternatively, work stools 12 can not arrange lateral edges, and in this case, gudgeon member is directly connected to working surface.

In work stools 12 flatly (extended position) when location, it can be fixed on this extended position by bearing assembly 28.Bearing assembly 28 is installed to the framework 14 of work stools 12 belows, and (in this embodiment, the gudgeon member of bearing assembly 28 is connected to a pair of breach 22, this engages the gudgeon member of work stools 12 to five breach of breach 22 belows), and be positioned to support angle and outwards and upwards extend, make downside and the lip of the far-end contact work stools 12 of bearing assembly 28.As shown in Figure 3, the far-end convergent of each supporting member 30, thus in the time that bearing assembly 28 contacts work stools 12, there is relatively concordant contacting at the far-end of each supporting member 30 and the downside of work stools 12.Taper angle is by corresponding with the supporting angle of hope; In this embodiment, taper angle is selected to concordant contact of downside that allows supporting member 30 and work stools 12 in the time that the gudgeon member of bearing assembly 28 separates by five breach with work stools 12.

Lip 36 is as the part that abuts of the convergent far-end of supporting member 30, and prevents that supporting member 30 from sliding and separating with work stools 12.Therefore work stools 12 can be disengaged with bearing assembly 28 by promoting work stools 12, makes lip leave the far-end of supporting member 30.

Once be disengaged, bearing assembly 28 can be pivoted to stowed position downwards from its bearing position, and wherein bearing assembly 28 suspends in midair vertically from framework 14; The thickness of the member of bearing assembly 28 is selected to and in the time being positioned at stowed position, makes bearing assembly 28 not stretch out from framework 14.This allows work stools 12 from its extended position pivotable and is pivoted to stowed position downwards, makes the bearing assembly 28 that flatly covering is packed up at least partly of work stools.In the time that work stools 12 and bearing assembly 28 are packed up in this manner, equipment 10 can provide very compact and little configuration.The fixture (not shown) of for example thumb screw can be arranged to fixing the bearing assembly in stowed position 28 and the working surface framework 14 that reclines.

Can see in the accompanying drawings, this embodiment of equipment 10 has relatively short framework 12, and this framework 12 is too short and can not allow bearing assembly 28 to be pivoted to the stowed position fitting in completely in framework 14 from its bearing position.The in the situation that in the time that needs bearing assembly 28 is being packed up, (for example, when framework is installed near Huo floor, floor) fitting in framework 14 completely, framework 14 can be designed with sufficient length, to allow bearing assembly 28 to be pivoted to the stowed position that is positioned at framework 14 completely, and do not consider which it is connected to breach 22.Alternatively, framework 14 can be designed with sufficient length, to only just allow bearing assembly 28 to be arranged on completely in framework on stowed position in the time that bearing assembly 28 is connected to certain to breach 22; If bearing assembly 28 is connected to a pair of breach 22, the stowed position (example as illustrated in fig. 1 and 2) that do not allow bearing assembly 28 to be pivoted to be positioned at framework 14 completely and this is too low to breach 22, first bearing assembly 28 must throw off and then be connected to another to breach 22 from framework 14, this another be enough to allow bearing assembly 28 to fit in completely in framework 14 to the height of breach 22, or be at least enough to allow bearing assembly 28 to leave floor in the time being positioned at stowed position.

Each lateral edges of work stools 12 arranges otch or recess 38, and it is enough greatly to receive the gudgeon member of bearing assembly 28.This can cover on bearing assembly 28 work stools 12 in the time that

parts

12,28 are all positioned at its stowed position, and work stools 12 and bearing assembly 28 can opposing parallel be located and coplanar with framework 14 in framework 14.There is no this recess 38, the lateral edges of work stools 12 can abut bearing assembly 28 and cause work stools 12 to protrude from framework 14 with an angle.In this embodiment, recess 38 is positioned at when bearing assembly 28 and work stools 12 are installed to the breach 22 of spaced apart two breach each bound fraction of bearing assembly 28 is fitted in in recess 38.Alternatively, if be intended to bearing assembly 28 and work stools 12 to be installed to framework 14 with different spacing, recess 38 can be positioned at along the diverse location of work stools 12.Alternatively, multiple recess (not shown) can be along every side setting of work stools 12, to allow user, with different relative positions, bearing assembly 28 and work stools 12 are installed to framework 14.

Be arranged on recess 38 in work stools 12 enough large, work stools 12 can be covered on bearing assembly, and gudgeon member can frictionally do not contact work stools 12.Alternatively, the size of recess 38 can be arranged to closely engage the gudgeon member of bearing assembly, thereby has enough being frictionally engaged to work stools 12 is fixed to bearing assembly 28 in the time that work stools 12 and bearing assembly 28 are all positioned at its stowed position.Whether the degree being frictionally engaged should be selected to and prevent that work stools 12 and bearing assembly 28 for example, because little power (by lorry move the power causing) separates, but very large to such an extent as to user can not easily separate work stools 12 with bearing assembly 28.As mentioned above, band or other fixture can be arranged to bearing assembly 28 to be fixed to framework; This fixture also can be used to work stools 12 to be fixed to framework 14 and/or bearing assembly 28.

Replace have in this embodiment bearing assembly to be connected to the discharged connection of work stools, i.e. the downside of the far-end of bearing assembly 28 contact work stools 12 also abuts lip 36, also can as known to persons of ordinary skill in the art, provide the discharged connection of other type.For example, cylindrical rod (not shown) can be fixed to the downside of work stools 12, and supporting member 32 is applicable to being clamped to releasedly bar.

The breach 22 of multiple alignings makes work stools 12 and bearing assembly 28 can be installed to the multiple positions on framework 14; Fig. 1 show work stools 12 be arranged on framework 14 mid point directly over, wherein Fig. 5 shows work stools 12 and is arranged on the top of framework 14.In situation about will extend at work stools, bearing assembly 28 will be positioned on framework 14, make bearing assembly 28 engage work stools suitably to support angle.In situation about will pack up at work stools 12, bearing assembly 28 will correspondingly be positioned on framework 14, make recess 38 receive the gudgeon member of bearing assembly 28, allow thus work stools 12 to be flatly retracted on bearing assembly 28.

With reference now to Fig. 6 and 7 and according to the second embodiment,, except work stools 12, equipment 10 also comprises a pair of support 50 of packing up.Each support 50 can be with respect to framework 14 pivotable between extended position and stowed position.

Although this embodiment is characterised in that the equipment 10 with two supports 50, equipment 10 can be provided with the support 50 of varying number in alternate embodiments.In another alternate embodiments, equipment 10 can only be provided with support 50 and there is no work stools 12.

In this embodiment, equipment 10 also comprises second framework 52 with the structure that is similar to the first framework 14, and it is positioned at the top of the first framework 14 installed part as support 50; Alternatively, but not shown, equipment 10 only includes a framework 14, and it has long longitudinal member in groups 16, and longitudinal member is used for mounting bracket 50 and work stools 12.In another alternate embodiments, equipment 10 has single framework 14, and its size is identical with the first embodiment, and with acting on both installed parts of support 50 and work stools 12.

Each support 50 comprises the working surface of general plane, and it has the lateral edges of a pair of vertical extension, and this lateral edges upwards extends in the time that each support 50 is positioned at its horizontal-extending position.Cylindricality joint 54 can be outwards laterally extending from each lateral edges near the rear end of support 40.Joint 54 is oriented to engage the breach 22 of a pair of aligning, make support 40 releasedly pivotable be connected to framework 14.

Equipment 10 also comprises the pair of brackets supporting 56 for each support 50, and it operates that each support 50 is fixed on to its horizontal-extending position.Each bracket supports 56 comprises slender member roughly and is positioned at a pair of pivot fitting 58 of each end of slender member, is pivotally mounted to the proximal fitting 58 of the opening in the longitudinal member 16 of framework 14 and is pivotally mounted to the distally joint 58 of the opening in the lateral edges of support 50.Proximal fitting and distally joint 58 can both be connected to respectively framework 14 and support 50 releasedly; This can be disengaged from support 50 bracket supports 56, and support 50 can be turned to its stowed position thus.

Equipment 10 can be provided with along the length of the longitudinal member 16 of framework 14 and extend and multiple openings 60 of proximal fitting 58 that can receiving tray supporting 56; Similarly, the joint 54 of each support 50 can be connected to any a pair of alignment notch 22 in longitudinal member 16, makes support 50 and relevant bracket supports 56 can be installed at differing heights place framework 14.

Support 40 and work stools 12 are all moveable to stowed position, make equipment 10 have the form of relative compact.Particularly, support 50 and work stools 12 are configured to respectively be pivoted to stowed position, and its medium-height trestle 50 and work stools 12 fit in the degree of depth of framework 14 completely; In other words, the lateral edges of support 50 and work stools 12 is selected such that support 50 and work stools 12 do not stretch out from framework 14 in the time being positioned at stowed position.

According to another embodiment and with reference to figure 8, equipment 10 can be arranged to external member, and in this case, framework 14, work stools 12 and bearing assembly can be assembled, with forming device 10.

Although specific embodiment described above, should be understood that other embodiment is also feasible, and is intended to comprise in the present invention.Those of ordinary skills are also feasible by understanding the unshowned modification of above embodiment and adjusting.

Claims

1. for being installed to the equipment on vertical surface, comprising:

(a) framework, it has at least two extending longitudinally and spaced longitudinal members, each longitudinal member comprises the multiple longitudinally-spaced breach extending internally from the leading edge of longitudinal member, and at least some breach of each longitudinal member are vertically aimed at at least some breach of another longitudinal member in the time that frame vertical straight is located;

(b) work stools, the lateral edges that it has working surface, extend from working surface and from lateral edges extend and releasably pivotable be connected to a pair of gudgeon member of the breach of first pair of aligning, and wherein each lateral edges comprises at least one recess; And

(c) bearing assembly, it has at least one supporting member and from a pair of gudgeon member that supporting member extends and releasably pivotable is connected to second pair of breach of first pair of breach below, supporting member comprises the far-end that releasably engages work stools;

Bearing assembly and work stools can be located with respect to framework respectively at extended position and stowed position, wherein in the time that work stools and bearing assembly are positioned at its extended position, the far-end of supporting member releasably engages work stools, make bearing assembly supporting work stools, and in the time that work stools and bearing assembly are positioned at its stowed position, work stools covers bearing assembly, make the gudgeon member of the recess reception bearing assembly of work stools, thereby work stools and bearing assembly and framework is roughly coplanar.

2. equipment according to claim 1, wherein, in the time that bearing assembly is positioned at extended position, supporting member is positioned at an angle with respect to framework, and the far-end of supporting member, with the taper angle convergent of the angle corresponding to supporting member, makes far-end in the time engaging with work stools contact with work stools is concordant.

3. equipment according to claim 2, wherein, when work stools is included in bearing assembly and engages with work stools from working surface to downward-extension and be positioned in abutting connection with the anterior lip of the far-end of supporting member.

4. equipment according to claim 1, wherein, work stools comprises multiple recesses along each lateral edges, multiple recesses are spaced apart from each other with the spacing of the spacing between the breach corresponding in framework.

5. equipment according to claim 1, wherein, bearing assembly has the thickness that is less than or equal to frame depth, and the gudgeon member of bearing assembly is connected to second pair of breach, makes bearing assembly when in stowed position, be positioned at the degree of depth of framework completely.

6. equipment according to claim 5, wherein, the gudgeon member of work stools is connected to first pair of breach, makes in the time that work stools is positioned at stowed position working surface concordant with frame depth or in the degree of depth of framework.

7. equipment according to claim 1, also comprise support, support comprises working surface and is connected to working surface the gudgeon member that is also releasably connected to the breach of the 3rd pair of aligning, and being connected at least one bracket supports of framework and support, its medium-height trestle can be positioned at extended position and stowed position with respect to framework.

8. equipment according to claim 1, wherein, at least one breach has L shaped shape, and it comprises extend back part and downward extension, and wherein the gudgeon member of work stools and bearing assembly is pivotally seated in downward extension.

9. equipment according to claim 1, wherein, at least one breach is straight, and with backward and downward angle extend in longitudinal member.

10. equipment according to claim 1, wherein, at least one breach is bending, and backward and extend downwardly in longitudinal member.

11. 1 kinds for being installed to the equipment on vertical surface, comprising:

(b) work stools, the lateral edges that it has working surface, extend from working surface and from lateral edges or working surface extend and releasably pivotable is connected to the breach of first pair of aligning a pair of gudgeon member; And

Bearing assembly and work stools can be located with respect to framework respectively at extended position and stowed position, wherein in the time that work stools and bearing assembly are positioned at its extended position, the far-end of supporting member releasably engages work stools, make bearing assembly supporting work stools, and in the time that work stools and bearing assembly are positioned at its stowed position, work stools covers bearing assembly, makes work stools and bearing assembly and longitudinal member roughly coplanar.

12. equipment according to claim 11, wherein, work stools also comprises the lateral edges extending from every side of work stools, and gudgeon member is by stretching out and be connected to working surface from lateral edges.

13. equipment according to claim 11, wherein, each lateral edges also comprises at least one recess, and in the time that work stools and bearing assembly are positioned at its stowed position, work stools covers bearing assembly, make the gudgeon member of the recess reception bearing assembly of work stools, thereby work stools and bearing assembly and framework are roughly coplanar.

14. 1 kinds for being installed to the external member of equipment on vertical surface, comprising:

(b) work stools, the lateral edges that it has working surface, extend from working surface and from lateral edges or working surface extend and releasably pivotable is connected to the breach of first pair of aligning of framework a pair of gudgeon member; And

In the time of bearing assembly, work stools and frame assembled, bearing assembly and work stools can be located with respect to framework respectively at extended position and stowed position, wherein in the time that work stools and bearing assembly are positioned at its extended position, the far-end of supporting member releasably engages work stools, make bearing assembly supporting work stools, and in the time that work stools and bearing assembly are positioned at its stowed position, work stools covers bearing assembly, makes work stools and bearing assembly and longitudinal member roughly coplanar.

15. external members according to claim 14, wherein, work stools also comprises the lateral edges extending from every side of work stools, and gudgeon member stretches out from lateral edges.

16. external members according to claim 14, wherein, each lateral edges also comprises at least one recess, and in the time that work stools and bearing assembly are positioned at its stowed position, work stools covers bearing assembly, make the gudgeon member of the recess reception bearing assembly of work stools, thereby work stools and bearing assembly and framework are roughly coplanar.