CN2270484Y

CN2270484Y - Wheel chair armrest with portable desk

Info

Publication number: CN2270484Y
Application number: CN 96209804
Authority: CN
Inventors: 赵雅珍
Original assignee: Individual
Current assignee: Individual
Priority date: 1996-04-22
Filing date: 1996-04-22
Publication date: 1997-12-17
Anticipated expiration: 2006-04-22

Abstract

The utility model relates to a wheel chair armrest with a portable desk, and the inner part of a box body of the armrest forms a proper storing channel. A cover plate lies against a top face of the box body by a pivot, and the box body is placed at a drag brace of the side edge of a wheel chair by a pivot piece at the bottom end of a rear branch pipe; meanwhile, a front branch pipe is inserted in and buckles a bearing fixed on the front part of the edge side of the wheel chair by pot heads and fasteners at the bottom end of the front branch pipe, and a trunnion is also fixed at the top part of a fixing seat ahead of the box body; the armrest can be combined with a desk plate by pivoting blocks and pivoting podical plates, and matches with the design of unfolding the desk plate and folding the desk plate to hide in the storing channel of the box body. The wheel chair armrest with the portable desk and a proper storing space is formed.

Description

The wheelchair armrest of tool convenient table

This utility model relates to a kind of wheelchair armrest of tool convenient table, refers to a kind of wheelchair armrest that possesses folding convenient table and storing groove especially.

Wheelchair be a kind of specialize in the lower part of the body maimed or healthy after the walking-replacing tool that uses of people, its main configuration as shown in figure 11, wheelchair 80 is respectively equipped with bull wheel 81 and castor 82 in the forward and backward position of both sides, and is provided with in order to the localized lock 83 of taking turns that brakes in a bull wheel 81 sides wherein; Again, wheelchair 80 the place aheads utilize 84 groups on carriage to be provided with for user and put the footrest 85 of putting both feet, and be provided with in the rear and be convenient to the handle 86 that the caretaker pushes, cooperate wheelchair 80 both sides to be mounted on the handrail 88 of chair arm 87 and the structures such as arm support of seat cushion below, group constitutes the basic framework of whole as shown in figure 11 wheelchair 80.

Brought forward is described, because the volume of wheelchair 80 is quite big, and because designs such as both sides bull wheel 81, handrail 88 and carriage 85, unless special exclusive table tool, the limbs cripple can't shift near its wheelchair 80 general table tool, the inconvenience and the puzzlement of the books and newspapers or the like that cause diet, write and read at all; In view of this, just have manufacturer to develop a kind of table 90 that wheelchair 80 uses of specializing in, these tables 90 utilize the linking tape of its bottom surface, both sides or handrail 88 places that the fastener group places wheelchair 80, use for the limbs cripple; It is perfect that right because existing wheelchair is not attained with the structural design of table 90, therefore has following shortcoming in the enforcement using:

(1), portably uses inconvenience: because the fixed in shape and the volume of existing table 90 are big, especially the structure of the wheelchair 80 design space of at all not settling these tables 90, and often must rely on other staff's help and carry, cause the trouble and inconvenience that portably use.

(2), that trouble is disassembled in assembling is bothersome: all must be assembled during existing table 90 each uses, and need to pull down again after using again, be assembling or disassemble that all quite trouble is bothersome.

(3), use and look for trouble: because existing table 90 is folding and unfoldings separately, must look for out earlier when not only using, this is inconvenience quite, and table 90 has the puzzlement of losing or forgetting deposit position easily; Especially want to utilize table 90 to read on a sudden impulse temporarily or when writing, may not have table 90 to use at once when user, this point is the big fraud that lacks of existing wheelchair with table 90 really.

In addition, general limbs invalid's sense of personal worth is relatively more fragile, and emulation is generally stronger than the normal person, therefore everything like doing it yourself and be unwilling trouble others, yet picking and placeing and carrying of existing table 90 all must rely on other people and assist, trouble and inconvenience that this often makes the invalid to stand not use table 90, also be unwilling the opening request other people assist, at present existing table 90 designs, and can't satisfy the needs of wheelchair 80 user really, really has and is studied improved necessity again.

So, this creator does not attain perfect at the structural design of above-mentioned existing wheelchair and table thereof, the use that causes lacking suitable storage space and table quite bothers many scarce frauds such as inconvenience, deeply conceived and the road of active research improvement, studied and development and Design goes out this utility model through secular effort.

The purpose of this utility model provides a kind of wheelchair armrest of tool convenient table, can directly fold, and has storage space, and can replace the wheelchair armrest of simple type flexibly.

This utility model provides a kind of wheelchair armrest of tool convenient table, comprises being located at the other casing of wheelchair, cover plate, back arm, preceding arm, pivot seat and table, and this casing is the rear pole place that the pivot spare of arm bottom behind the nationality is incorporated into the wheelchair side; It is characterized in that:

The inside of casing forms the storing groove and has the cover plate hub setting to be covered on the opening part of box top, and the preceding arm that is positioned at its front side is to plant with the end cover of bottom to be positioned to be installed in the bearing place of wheelchair side, makes casing obtain the location,

The pivot seat is the holder place that is fixedly arranged in the casing front side, and have a pivot piece to be pivoted to be incorporated in the pivot seat, this pivot piece external part is to be pivoted with an arm plate to engage, and a table is arranged in conjunction with being positioned on the arm plate, with utilize table, arm plate, pivot piece and pivot seat in conjunction with articulating, it is deployable or collapse in the wheelchair armrest of casing storing groove that group constitutes a kind of table.

This utility model compared with the prior art advantage and good effect is very obvious.By above technical scheme as can be known, this utility model has following advantage on use is implemented:

(1), portably uses facility: because convenient table of the present utility model can directly be contained in the storing groove of casing, not only can take out at any time and launch to use, and portably use quite easyly, not have and look for or do not have a puzzlement that table uses.

(2), launch or fold simple and convenient: this utility model utilizes the design of pivot seat, pivot piece and arm plate, is that the expansion of table is used and rolled over by folding all considerably simple and convenient.

(3), the quick-witted demand that meets the limbs invalid: of the present utility model manipulating fully can be finished voluntarily by user, and everything likes doing it yourself and the desire of others' assistance of trouble of being unwilling can fully to satisfy the invalid.

(4), have suitable storage space: this utility model is not established the storing groove of the casing of convenient table side, can put the small article that notebook, paper pen, cassette player etc. are carried for user, dark tool Practical Benefit.

(5), flexible and convenient is replaced in assembling: the assembling of this utility model casing is disassembled quite easy, can directly replace the wheelchair armrest of simple type according to user demand.

Further specify specific structural features of the present utility model and purpose below in conjunction with accompanying drawing.

Brief Description Of Drawings:

Fig. 1 is the user mode reference diagram of this utility model preferred embodiment, in order to structure configuration of the present utility model to be described and to implement to use form.

Fig. 2 is the stero exploded view of this utility model preferred embodiment, in order to member form of the present utility model and configuration relation to be described.

Fig. 3 is the stereo appearance figure of this utility model preferred embodiment, in order to assembled configuration form of the present utility model to be described.

Fig. 4 is that this utility model preferred embodiment starts cover plate and table is concealed in the enforcement state diagram of casing storing groove.

Fig. 5 is the enforcement state diagram that this utility model preferred embodiment is table half deployed condition.

Fig. 6 is the bonding state figure of relevant table of this utility model preferred embodiment and auxiliary table.

Fig. 7 is this utility model preferred embodiment is provided with light fixture in the casing pivot seat of not establishing the table side enforcement state diagram.

Fig. 8 is the adjustment action diagram of adjusting before and after the relevant table of this utility model preferred embodiment.

Fig. 9 is the enforcement state diagram that this utility model preferred embodiment is held butt strip in the pivot seat setting of not establishing the table side.

Figure 10 is the enforcement state diagram that wheelchair is docked in the convenient type handrail.

Figure 11 is the stereo appearance figure of existing wheelchair attaching table.

This utility model is a kind of wheelchair armrest of tool convenient table, and please referring to shown in Fig. 1,2,3, it mainly comprises structures such as armrest box body 10, cover plate 20, back arm 30, preceding arm 40, pivot seat 50 and table 60; Wherein:

Casing 10 is to be made of the identical coverboard 100 assembly groups of two configurations, the frame sheet 11 relative contacts that two coverboards 100 utilize inboard periphery to spread out to stretch, cooperate to align the bolt of wearing that spiral shell is through at coverboard 100 root edge both sides combined holes 13, group constitutes the casing 10 of the opening-like and inner formation storing groove 12 of end face; Again, the suitable height place of coverboard 100 forward and backward side frame sheets 11, the mask semi-cylindrical pressed from both sides the holder 14 of the edge 15 of pulling in one was provided with, and provide in holder 14 places and to be communicated with the pull combined hole 17 of edge 15 of folder, make the folder to utilize two coverboards 100 edge 15 of pulling be enclosed to form for forward and backward

arm

40,30 bonded canister apertures 16, for ease of the assembling and the action of pivot seat 50, be positioned at holder 14 top sides and form the opening shape of not establishing frame sheet 11 simultaneously;

Brought forward is described, casing 10 is positioned at coverboard 100 both sides in the outside and respectively offers some perforation 18, present embodiment is an example of respectively offering two perforation 18, wherein the perforation 18 of a side coverboard 100 is hinge 22 combinations for cover plate 20, and the perforation 18 of side coverboard 100 can be fixed in coverboard 100 inboards for magnetic spare 19 spiral shells of interior tool Magnet in addition; Again, be recessed to form can be for the marked area 102 of pasting purposes such as trade mark, pattern for the outer panel face of each coverboard 100; In addition, casing 10 of the present utility model can also be the structure of integrated injection molding;

Cover plate 20 is to cooperate casing 10 open-topped long rectangular panel blocks structures, and its inside can be coated with soft material layers such as similar sponge or foaming body, and the arm that is available for users to is cosily shelved on it; Perforation 18 corresponding to casing 10, the bottom surface of cover plate 20 is provided with several screws 21, use cooperate many bolts with two plates of several hinges 22 respectively spiral shell be posted by the perforation 18 of casing 10 and screw 21 places of cover plate 20 admittedly, make cover plate 20 place casing 10 tops with the combining form lid that can start; Again, cooperate the magnetic spare 19 of casing 10, the relative position of cover plate 20 is installed with iron plate 23, makes cover plate 20 cover Shi Buhui and raises arbitrarily;

Back arm 30 is the suitable and curved tubes and pipe of aluminium alloy stretched of center section part bit parallel of length, its position, both ends has provided a perforation 31 respectively, use the canister aperture 16 that arm 30 tops, back is arranged in casing 10 rear side holders 14, cooperate spiral shell to be through at combined

hole

17 and 31 the bolt of boring a hole, make arm 30 combinations in back be fixed in casing 10 rear sides, and have an end plug 36 to plug in arm 30 tops, back; Again, back arm 30 bottoms are installed with a pivot spare 33, this pivot spare 33 is stretched for the rear side one and is established the tubular bodies that triangular shape supports piece 336, and its stage casing pipe face is horizontally set with pivot hole 334 and the inner slot 332 that forms towards upper shed, and stator 34 is respectively to hold the place, angle to provide the metal lamellar body of perforation 342;

Brought forward is described, arm 30 bottoms, back are penetrated the slot 332 of pivot spare 33, utilize a gim peg 35 to pass the perforation 342 of a stator 34, the pivot hole 334 of pivot spare 33, the perforation 32 of back arm 30 and the perforation 342 of another stator 34 successively simultaneously, simultaneously utilize two gim pegs 35 to pass the perforation 342 and the wheelchair rear pole 89 of a stator 34 respectively again, make arm 30 bottoms, back be fixedly arranged on pivot spare 33 places, and pivot spare 33 folder that is pivoted is against two 34 of stators that are fixedly arranged on rear pole 89;

Preceding arm 40 is the suitable tubes and pipe of aluminium alloy of length, its top provides first and second perforation 51 respectively, the feasible canister aperture 16 that preceding arm 40 tops is arranged in casing 10 front side holders 14, cooperate spiral shell to be through at the bolt of the combined hole 17 and second perforation 41, arm 40 is in conjunction with being fixed in casing 10 front sides before making, first perforation 41 of arm 40 outstanding holders 14 simultaneously can be for fixed the closing of pivot seat 50 spiral shells; Again, preceding arm 40 bottoms provide the perforation 42 that screws togather admittedly for end cover 43 covers, and this end cover 43 is that stage casing pipe face is horizontally set with perforation 434 and the inner pipe fitting that forms towards upper shed slot 432, and forms cone-shaped spigot 436 in end cover 43 bottoms; In addition, fastener 44 is stage casing tool perforation 446, and top and bottom form the plate body of pulling end 442 and hook end 444 respectively;

Brought forward is described, and preceding arm 40 bottoms are penetrated the slot 432 of pivot spare 43, and utilize a bolt 46 pass successively spring 45, fastener 44 and end cover 43 perforation 446,434 and before the perforation 42 of arm 40, make fastener 44 and end cover 43 be fixed in before arm 40 bottoms; Again, bearing 47 is Qian shape frame lamellar bodies that a side is spread out and stretched the horizontal concave arc veneer 476 of tool, and formation frame groove 472 and plate face respectively provide a perforation between its two lateral plate, and forms the jack 474 of oblique cone shape in frame groove 472 bottom surfaces; So, bearing 47 utilizes its concave arc shape veneer 476 to be posted by the transverse tube of wheelchair 80 sides, cooperation is passed the perforation of its lateral plate and is fixed at transverse tube with bolt, makes bearing 47 be fixed in the position of preceding arm 40 bottoms of correspondence, inserts by reaching fastener 44 buckles with end cover 43 for preceding arm 40;

Pivot seat 50 is block structures that trunnion groove 51 and front side form sealing surface in the inner tool, and in its angle, lower end, front side and rear side upper corners place provided combined

hole

52,53 respectively, use pivot seat 50 is arranged in casing 10 front side holders 14 end faces, cooperate spiral shell to be through at the bolt of combined hole 52 and preceding arm 40 first perforation 41, make pivot seat 50 be fixedly arranged on holder 14 end faces of casing 10; Again, pivot piece 54 is to be stretched by axial region 542 side one to establish the block that tool is counted caulking groove 548, the place, axle center of its axial region 542 provides pivot hole 544, and axial region 542 side faces that are different from caulking groove 548 directions are made as the plane 546 of smooth shape, and its caulking groove 548 places provide the pin-and-hole (not shown in the figures) that engagement arm plate 55 is pivoted;

Brought forward is described, and the axial region 542 of pivot piece 54 is inserted the pivot groove 51 of pivot seat 50, cooperates the set bolt that is arranged in combined hole 53 and pivot hole 544, makes pivot piece 54 be pivoted and is incorporated into pivot seat 50 places; Again, arm plate 55 is L shaped sheet structure, its end face in short end forms the several abaculus 552 that cooperate caulking groove 548, each abaculus 552 has provided pin-and-hole 554, to utilize abaculus 552 to align the caulking groove 548 that embeds pivot piece 54, cooperate the pin of wearing that is arranged in pin-and-hole 554, make arm plate 55 be hubbed at pivot piece 54, and the long Ban Mianchu of arm plate 55 has provided two longilineal adjustment holes 556 successively; In addition, tingle 57 is rectangular slab lamellar bodies that both end sides provides fixing hole 574, and is arranged with the pivot groove 572 of engagement arm plate 55 specifications in its plate face;

Table 60 is plate bodies that size cooperates storing groove 12, and its plate face appropriate location has provided a keyhole 61 and two screws 62 respectively with the angular distribution form; So, utilize a clamping bolt 56 to pass adjustment hole 556 screw locks of arm plate 55 in the keyhole 61 of table 60, and pass the fixing hole 574 of tingle 57 and screw lock respectively in the screw 62 of table 60 with two gim pegs 576, make table 60 utilize tingle 57 in conjunction with being fixed in arm plate 55 places, simultaneously arm plate 55 just is extended through in the pivot groove 572 of tingle 57, the storing groove 12 that table 60 can be folded at casing 10 is provided or is deployed in wheelchair 80 front sides;

Brought forward is described, cooperate table 60 to combine with being pivoted of auxiliary table 67, please be simultaneously referring to shown in Figure 6, table 60 respectively spreads out in respective side with auxiliary table 67 and stretches relative junction surface 63, each junction surface 63 1 side edge forms is convenient to the arc edge 632 that auxiliary table 67 foldings lean on, and forms the short slot 634 of tool screw 636 in two ends; So, respectively utilize two gim pegs 66 to pass the perforation 652 and a gasket ring 64 at two strip shape contact pin, 65 both ends respectively successively, and be fixed at the screw 636 of the joint portion 63 of table 60 and auxiliary table 67, make auxiliary table 67 articulate with opposite side and combine with table 60; In addition, auxiliary table 67 forms notch edge 672 in the place, end angle of lateral border, to make things convenient for user by in the storing groove 12 table 60 being pulled out;

So, utilize the pivot seat 50 of casing 10, cover plate 20, back arm 30, preceding arm 40, tool arm plate 55 and the table 60 of the auxiliary table 67 of tool, group constitutes has the novel armrest person of wheelchair of convenient table as shown in Figure 1, 2, 3.

Please referring to Fig. 1,4, shown in 5, when this utility model does not use table 60 at ordinary times, table 60 can utilize pivot seat 50, the cooperation of pivot seat 54 and arm plate 55, directly be folded in the storing groove 12 of casing 10, form a kind of complete attractive in appearance and use comfortable armrest, and borrow being pivoted of back arm 30 to support the plant buckle that reaches preceding arm 40, it is firm in conjunction with effect to make casing 10 obtain, the while casing 10 directly pivot spare 33 of later arm 30 bottoms starts (as shown in Figure 3) for axle, make things convenient for the needs of wheelchair 80 under the user, can not influence wheelchair 80 fully and manipulate normally, and be convenient to carrying of table 60; When user to have a dinner or read, when writing, as long as directly cover plate 20 is opened, to pull out in the storing groove 12 of table 60 by casing 10, launch simultaneously to put in wheelchair 80 front sides, and can need decision whether will assist table 67 to launch according to using, group constitutes a kind of easy-to-use and convenient table tool that structure is simplified, really is a kind of excellent novel creation.

Please referring to shown in Fig. 1,7, this utility model stands on wheelchair 80 1 sides for 10 groups with the armrest box body of the convenient table 60 of interior tool, be convenient to manipulating of user, be positioned at wheelchair 80 other casings 10 of side table 60 then is not set, the storing groove 12 of this casing 10 can be according to the needs of user, article such as storing such as notebook, cassette player, paper pen or tableware, and can be as shown in Figure 7, the coiled pipe shape of suitable light fixture 70 is stretched pivot piece 54 places that pipe 72 is incorporated into pivot seat 50, the user reading directly is provided or writes the illumination that needs, significantly improve the practical usefulness of wheelchair 80.

Please referring to shown in Fig. 2,5,8, it is the designs that are extended through the pivot groove 572 of tingle 57 and adjust hole 556 that this utility model utilizes arm plate 55, therefore just can utilize the slippage of arm plate 55 as long as clamping bolt 56 unclamped in tingle 57, adjust the front and back position of table 60, reach the needs that fully are not used person's stature and use habit; Again please referring to shown in Fig. 1,9, during for fear of table 60 and 67 expansion of auxiliary table, auxiliary table 67 free ends of these single armed combining forms have the insufficient misgivings of support force, can be in being different from the arm plate 55 pivot seat 50A of side in addition that is pivoted, form the ostiolate chute 58 of inner face, hold butt strip 59 sliding settings for one and be arranged in chute 58, this holds butt strip 59 and can be concealed in the chute 58 of pivot seat 50A when flat, pull out for auxiliary table 67 by chute 58 more whenever necessary when user and to bridge, provide table 60 and auxiliary table 67 better support effect.

In addition, please referring to shown in Fig. 1,10, casing 10 of the present utility model is rear pole 89 places that the pivot spare 33 of arm 30 is pivoted and is incorporated into wheelchair 80 after utilizing, the bottom of its preceding arm 40 then utilizes the in addition combination of buckle of the plant of end cover 43 and fastener 44, therefore as long as pine moves back the gim peg 45 that passes pivot spare 43 and stator 44, just casing 10 can be pulled down; So, to carry out contest or other purposes when wheelchair 80 user and have when alleviating the needing of outfit, can directly casing 10 be pulled down and the handrail A1 of the simple type that changes the outfit, the  shape frame bar A that utilizes handrail A1 is pivoted in conjunction with between two stators with the pivot spare of rear end, reach the purpose that is assembled, the practical usefulness that dark tool changes the outfit flexibly; In addition, the structural design of this utility model whole box body 10 and each assembly all adopts symmetric configuration design, make same set of casing 10 can be assembled in the left side or the right side of wheelchair 80, and can be docked on the wheelchair 80 of existing specification, effectively reduce equipment cost and improve practical value.Armrest of seat, dark tool motility.

Claims

1, a kind of wheelchair armrest of tool convenient table comprises and is located at the other casing of wheelchair, cover plate, back arm, preceding arm, pivot seat and table that this casing is the rear pole place that the pivot spare of arm bottom behind the nationality is incorporated into the wheelchair side; It is characterized in that:

The inside of casing forms the storing groove and has the cover plate hub setting to be covered on the opening part of box top, and the preceding arm that is positioned at its front side is to plant with the end cover of bottom to be positioned to be installed in the bearing place of wheelchair side,

The pivot seat is the holder place that is fixedly arranged in the casing front side, and has a pivot piece to be pivoted to be incorporated in the pivot seat, and this pivot piece external part is to be pivoted with an arm plate to engage, and a table is arranged in conjunction with being positioned on the arm plate.

2, the wheelchair armrest of tool convenient table according to claim 1 is characterized in that: this casing tool canister aperture and laterally provide the holder of combined hole in forward and backward side one is provided with wherein.

3, the wheelchair armrest of tool convenient table according to claim 1 and 2 is characterized in that: wherein this casing is by the identical coverboard of two configurations, relatively piece together by combination and with wear bolt in addition spiral shell consolidate.

4, the wheelchair armrest of tool convenient table according to claim 3 is characterized in that: the mask semi-cylindrical folder holder of edge of pulling in wherein each one of side is provided with before and after two coverboards of this casing, and make the folder of the two coverboards edge of pulling be enclosed to form canister aperture relatively.

5, the wheelchair armrest of tool convenient table according to claim 1 is characterized in that: wherein this cover plate is to be pivoted with the bottom surface lateral margin to be covered on box top.

6, have the wheelchair armrest of convenient table according to claim 1 or 5, it is characterized in that: the magnetic spare of casing tool Magnet in the apical margin position of different binding cover plate is provided with wherein, and be provided with iron plate for the absorption of magnetic spare in the cover plate relative position.

7, the wheelchair armrest of tool convenient table according to claim 1 is characterized in that: arm wears in the canister aperture that is incorporated into casing front side holder with the top wherein, and arm jag and be fixedly arranged on the holder top of casing before the pivot seat is screwed together in.

8, the wheelchair armrest of tool convenient table according to claim 1, it is characterized in that: the arm bottom is provided with the end cover that root edge forms cone-shaped spigot wherein, and the fastener that root edge tool hook end is arranged is arranged at end cover side, the transverse tube place of wheelchair side is installed with a bearing, forms the frame groove of bottom surface tool oblique cone shape jack between two lateral plates of this bearing.

9, the wheelchair armrest of tool convenient table according to claim 1 is characterized in that: the pivot groove place of its maincenter seat is pivoted with a pivot piece, and this pivot piece side one is stretched out the block that tool is counted caulking groove, and described arm plate combines with the caulking groove pivot joint of pivot piece with its abaculus.

10, the wheelchair armrest of tool convenient table according to claim 1 is characterized in that: wherein the Ban Mianchu of arm plate has provided microscler adjustment hole, and have a clamping bolt pass its adjust hole and screw lock in the keyhole of table.

11, according to the wheelchair armrest of claim 1 or 10 described tool convenient tables, it is characterized in that: wherein the table bottom surface is provided with a tingle, and this tingle spiral shell is posted by the table bottom surface admittedly, and this arm plate cunning is through at its pivot groove.

12, the wheelchair armrest of tool convenient table according to claim 1 is characterized in that: wherein table connects an auxiliary table in medial border, and the relative joint that is pivoted in junction surface that spreads out and stretch with table and auxiliary table respective side.

13, the wheelchair armrest of tool convenient table according to claim 12 is characterized in that: wherein auxiliary table is formed with the notch edge in the place, end angle of lateral border.

14, the wheelchair armrest of tool convenient table according to claim 1 is characterized in that: wherein wheelchair forms the storing groove of tool storage space in the box house of not establishing table.

15, the wheelchair armrest of tool convenient table according to claim 1 is characterized in that: wherein wheelchair is combined with a light fixture in the pivot seat at the place, casing front side that does not establish table with its pivot piece.

16, the wheelchair armrest of tool convenient table according to claim 1 is characterized in that: wherein wheelchair forms the ostiolate chute of inner face in the pivot seat at the casing front side place that does not establish table, and holds sliding setting of butt strip and be positioned at this chute.