CN102100597A

CN102100597A - Wheel chair

Info

Publication number: CN102100597A
Application number: CN2010101213990A
Authority: CN
Inventors: 木川勇三
Original assignee: Echigo Industry Co Ltd
Current assignee: Echigo Industry Co Ltd
Priority date: 2009-12-16
Filing date: 2010-02-24
Publication date: 2011-06-22
Also published as: TW201121529A; KR20110068746A; JP2011125451A

Abstract

The invention provides a wheelchair. By disposing a positioning mechanism capable of positioning the wheelchair to a specific separation position, the invention can easily position the wheel to a specific separation position in an open space needed for forming the seat for getting on and off, can improve the operability in wheel positioning, and can improve the use convenience. In the wheelchair of the invention, a seat part (2) is disposed on a frame (1); a pair of circular wheels (5) are disposed on both sides of the frame; a wheel separating mechanism (7) is disposed on a specific separation position F in the open space K needed for forming the seat for getting on and off; the wheel separating mechanism (7) can divide the circular wheel into a sector specific part (5a) including a section of the circumference of the wheel and a residual part (5b) expecting the specific part, and is provided with a positioning mechanism (10) capable of positioning the wheelchair to a specific separation position.

Description

Wheelchair

Technical field

The present invention relates to the employed wheelchairs such as old man of a kind of for example patient in hospital, people with disability, need nursing.

Background technology

In recent years, as this wheelchair, known have a wheelchair with following structure: be equipped with seat portion on framework, be equipped with the wheel of toroidal simultaneously in the left and right sides of this framework portion, in the particular separation position that is used to form the necessary open space of boarding seat portion, be provided with the wheel separating mechanism, above-mentioned wheel separating mechanism can be divided into the wheel of above-mentioned toroidal the fan shape specific part of a part that comprises this wheel periphery and the remainder except that specific part.

And, during the boarding seat portion,, will comprise that the specific part of fan shape of the part of wheel periphery separates from remainder in the particular separation position that is used to form the necessary open space of boarding seat portion, form the necessary open space of boarding seat portion.

Patent documentation 1: No. the 4035730th, Japan's special permission

Summary of the invention

(problem that invention will solve)

But, under the situation of above-mentioned existing structure, the fan shape specific part must located wheel exactly from the isolating particular separation of remainder position, by range estimation above-mentioned separation point position is being positioned seat portion and bother very much, therefore the lower defective of convenience of use is being arranged.

(technical scheme of technical solution problem)

The objective of the invention is to solve this defective, in the present invention, being characterized as of the wheelchair of the 1st aspect, on framework, be equipped with seat portion, be equipped with the wheel of toroidal simultaneously in the left and right sides of described framework portion, be provided with the wheel separating mechanism in the particular separation position that is used to form the necessary open space of the described seat portion of boarding, described wheel separating mechanism can be divided into the wheel of described toroidal the fan shape specific part and the remainder except that described specific part of a part that comprises described wheel periphery, and be provided with can be with the detent mechanism of described wheel alignment in described particular separation position.

And, being characterized as of the wheelchair of the present invention the 2nd aspect, on described framework, be provided with the mechanism for lifting that described wheel is risen from ground plane, and, being characterized as of the wheelchair of the present invention the 3rd aspect, be provided with interlinked mechanism, be used for when described wheel rises, making described detent mechanism position action, simultaneously when described wheel contacts to earth, make described detent mechanism remove action, and, being characterized as of the wheelchair of the present invention the 4th aspect, be provided with the locking mechanism that can stop described wheel rotation in described particular separation position, and being characterized as of the wheelchair of the present invention the 5th aspect is provided with release mechanism, be used at described specific part when described remainder separates, stop the releasing of described locking mechanism, when described remainder and specific part installation, can remove described locking mechanism simultaneously.

(effect of invention)

The present invention as mentioned above, because being provided with in aspect the 1st can be with the detent mechanism of described wheel alignment in described particular separation position, therefore wheel easily can be positioned to be used to form the particular separation position of the necessary open space of boarding seat portion, the positioning action of wheel can be improved, and the convenience that uses can be improved.

And, because described framework is provided with the mechanism for lifting that described wheel is risen from ground plane in the 2nd aspect, therefore with wheel alignment when being used to form the particular separation position of the necessary open space of boarding seat portion, wheel is risen from ground plane, by wheel is risen from ground plane, wheel can rotate freely, can easily make the wheel rotation by enough handss, can easily position operation by detent mechanism, and, owing to be provided with interlinked mechanism in aspect the 3rd, be used for when described wheel rises, make described detent mechanism position action, simultaneously when wheel contacts to earth, make described detent mechanism remove action, therefore can with the rise of wheel or the action interlock that contacts to earth, position the location action of mechanism or remove action, can position operation by detent mechanism more easily, and, owing to be provided with the locking mechanism that can stop described wheel rotation in aspect the 4th in described particular separation position, therefore can make wheel accurately be positioned to be used to form the particular separation position of the necessary open space of boarding seat portion, and, owing to be provided with release mechanism in aspect the 5th, be used at described specific part when described remainder separates, stop the releasing of described locking mechanism, simultaneously when described remainder and specific part installation, can remove described locking mechanism, therefore can stop locking mechanism to be removed in the accident of particular separation position, the rotation of remainder under the separated state of specific part of wheel can be stoped, thereby the safety of use can be improved.

Description of drawings

Fig. 1 is the unitary side view of the transport condition of embodiment of the present invention.

Fig. 2 is the unitary side view of the particular separation position of embodiment of the present invention.

Fig. 3 is the unitary side view of the wheel of embodiment of the present invention when rising.

Fig. 4 is the local amplification view of the wheel of embodiment of the present invention when rising.

Fig. 5 is the local enlarged side view of the wheel of embodiment of the present invention when rising.

Local enlarged side view when Fig. 6 contacts to earth for the wheel of embodiment of the present invention.

Local enlarged side view when Fig. 7 contacts to earth for the wheel of embodiment of the present invention.

Fig. 8 is the local amplification view of embodiment of the present invention.

Partial side view when Fig. 9 is the separation of embodiment of the present invention.

Partial sectional view when Figure 10 is the separation of embodiment of the present invention.

Partial side view when Figure 11 is the installation of embodiment of the present invention.

Partial sectional view when Figure 12 is the installation of embodiment of the present invention.

Partial side view when Figure 13 is the separation of embodiment of the present invention.

Partial side view when Figure 14 is the separation of embodiment of the present invention.

Partial sectional view when Figure 15 is the separation of embodiment of the present invention.

Symbol description

The K open space

The F separation point position

The M ground plane

1 framework

2 seat portion

5 wheels

The 5a specific part

The 5b remainder

7 wheel separating mechanisms

9 mechanism for lifting

10 detent mechanisms

11 interlinked mechanisms

12 locking mechanisms

13 release mechanisms

The specific embodiment

Fig. 1 to Figure 15 represents embodiments of the present invention, 1 is framework, is equipped with seat portion 2, back-rest 3 and tread portion 4 at the central part of framework 1, in the left and right sides of framework 1 one, rotate the

wheel

5,5 that is equipped with toroidal freely by axletree S, be equipped with little front-

wheel

6,6 simultaneously.And, have the armrest part that can pack up by stow mechanism such as the structures of upspringing in the left and right sides of framework portion.

7 is the wheel separating mechanism, in this case, it has following structure: separation is formed with the fan shape specific part 5a of a part that comprises above-mentioned toroidal wheel 5 peripheries and the remainder 5b except that specific part 5a, be provided with, the charging crane 8 that it loads and unloads remainder 5b and specific part 5a freely, and, specific part 5a forms the fan shape of about 120 degree of arc angle, remainder 5b forms the circular-arc of about 240 degree of arc angle, on the interface of specific part 5a and remainder 5b, be formed with engaging protuberance 8a and engaging recessed part 8b, engaging by above-mentioned engaging protuberance 8a and engaging recessed part 8b, specific part 5a and remainder 5b loading and unloading are freely, remainder 5b is articulated in axletree S, at the particular separation position F that is used to form the above-mentioned seat portion 2 necessary open space K of boarding, form the above-mentioned seat portion 2 necessary open space K of boarding by pulling down specific part 5a.

9 is mechanism for lifting, in this case, as Fig. 4 and shown in Figure 5, it has following structure: substrate 9a is installed on said frame 1, upper connector 9b with pair of right and left, the foot connector 9c of 9b and L shaped shape, each base end part of 9c is by

fulcrum pin

9d, 9e articulates and is based in substrate 9a, foot part 9f is articulated in foot connector 9c by pin 9g, the leading section of 9c, with a pair of upper connector 9b, the leading section of 9b is articulated in the pars intermedia of pulling connector 9h by pin 9i, simultaneously, the leading section of pulling connector 9h is articulated in foot connector 9c by pin 9j, the pars intermedia of 9c, connector 9k is articulated in framework 1 by pin 9l preceding bottom will be handled, an end to handling connector 9k by connecting rod 9m is connected with pulling connector 9h, simultaneously handle 9n is arranged on another end of handling connector 9k.

And, in Fig. 7 under wheel 5 and the ground plane M state of contact, drawing commentaries on classics to handle connector 9k by handle 9n makes pulling connector 9h erect rotation,

foot connector

9c, 9c is by upper connector 9b, the foot connector 9c of 9b and L shaped shape, the connecting moves of 9c and erect action, as Fig. 5, foot part 9f contacts with ground plane M, wheel 5 rises from ground plane M, and, when above-mentioned wheel 5 rises, pressing commentaries on classics to handle connector 9k by handle 9n rotates pulling connector 9h lodging,

foot connector

9c, 9c is by upper connector 9b, the foot connector 9c of 9b and L shaped shape, the connecting moves of 9c and the action that lodges, as Fig. 7, foot part 9f separates with ground plane M, and wheel 5 contacts with ground plane M.

10 is detent mechanism, it has the structure that above-mentioned wheel 5 can be positioned particular separation position F, wherein above-mentioned particular separation position F is used to form the above-mentioned seat portion 2 necessary open space K of boarding, in this case, interlinked mechanism 11 is set, is used for when above-mentioned wheel 5 rises, make detent mechanism 10 position action, simultaneously, when wheel 5 ground connection, make above-mentioned detent mechanism 10 remove action.

In this case, as Fig. 6, installation sheet 10a is installed on said frame 1, wheel side at installation sheet 10a is equipped with support chip 10b, the slide plate 10c that slides on the wheel relative direction freely is installed in the outside simultaneously, support tube 10d is installed on support chip 10b, the alignment pin 10f that is suppressed in wheel side by spring 10e is installed in support tube 10d, with the base portion fastening of alignment pin 10f in slide plate 10c, on above-mentioned foot connector 9c, lobe plate 10g is installed, action roller 10h is installed on slide plate 10c simultaneously, on the other hand, remainder 5b at wheel 5, the position relative with alignment pin 10f is equipped with and receives pin 10i in above-mentioned particular separation position F, receive be formed with on the pin 10i can be chimeric with alignment pin 10f locating hole 10j, and, as Fig. 1, Fig. 6, Fig. 7, when foot part 9f leaves and when wheel 5 is contacted to earth from ground plane M, action roller 10h is pulled by lobe plate 10g, alignment pin 10f extracts from locating hole 10j, wheel 5 can contact to earth freely and advance, and, as Fig. 2, Fig. 3, Fig. 4, Fig. 5, when wheel 5 being risen as foot part 9f contact ground plane M, wheel 5 can rotate freely, simultaneously, lobe plate 10g leaves from action roller 10h, alignment pin 10 is side-prominent to wheel 5 by spring 10e, under this state, if in the locating hole 10j position relative with alignment pin 10f wheel 5 is rotated, as Fig. 4, at this relative position, in the moment of crossing the beveled edge portion that receives pin 10i, alignment pin 10f inserts and is embedded in locating hole 10j, thus, wheel 5 is positioned and is fixed in particular separation position F.

12 is locking mechanism, it has at above-mentioned particular separation position F, the structure that can stop wheel 5 rotations, in this case, as Fig. 1, Fig. 8, Fig. 9, Figure 10, by 3 lunate sliding eye 12b and chimeric wherein 3 sliding pin 12c, swivel plate 12a rotation is arranged on the hub portion 5c of the wheel 5 that is fixed in framework 1 freely, on swivel plate 12a, be fixed with the roughly fanning strip 12d of fan shape, on fanning strip 12d, be fixed with the guide rail 12e of semicircle arcuation, be connected to the deflector roll 12f of guide rail 12e on wheel 5, being equipped with, thus, by the chimeric and guide rail 12e of sliding eye 12b and sliding pin 12c and slipping of deflector roll 12f, swivel plate 12a rotation freely, and, sliding cylinder 12g is installed on wheel 5, on sliding cylinder 12g, be provided with stop pin 12h sliding freely, and be provided with the spring 12i that stop pin 12h can be suppressed in fanning strip 12d, on the other hand, on fanning strip 12d, on the direction relative, be provided with the manipulation pin 12k of band knob 12j sliding freely with wheel 5, simultaneously, be provided with the spring 12l that manipulation pin 12k can be suppressed in wheel side, on the specific part 5a of wheel 5, be provided with reception pin 12n with locating hole 12m, installation site D at specific part 5a and remainder 5b, handle pin 12k and can be embedded in above-mentioned locating hole 12m, on the remainder 5b of wheel 5, be provided with reception pin 12p with locating hole 12o, removed position E at specific part 5a and remainder 5b, handle pin 12k and can be embedded in above-mentioned locating hole 12o, on hub portion 5c, be fixed with fixed disk 5d, on fanning strip 12d, be provided with the track cam 12q that stop pin 12h is reversed, the base portion that is formed with stop pin 12h on fixed disk 5d inserts chimeric lock hole 5e, and, as Fig. 2, Fig. 8, installation site D at specific part 5a and remainder 5b, handle pin 12k and be embedded in locating hole 12m, on the other hand, as Fig. 2, Fig. 8 to Fig. 9, at above-mentioned particular separation position F, under the state of from locating hole 12m, extracting by band knob 12j pulling manipulation pin 12k, fanning strip 12d turns clockwise, will be by spring 12l with the manipulation pin 12k of knob 12j embeds the locating hole 12o that receives pin 12p with fanning strip 12d positioning and fixing, rotation by this fanning strip 12d, as Fig. 9, Figure 10,12q overcomes spring 12i by the guide rail cam, stop pin 12h reverses, reverse by this, lock hole 5e is gone in stop pin 12h intercalation, stop the rotation of wheel 5, and, under the state of from locating hole 12o, extracting by band knob 12j pulling manipulation pin 12k, fanning strip 12d is rotated counterclockwise, will be by spring 121 with the manipulation pin 12k of knob 12j embeds the locating hole 12m that receives pin 12n with fanning strip 12d positioning and fixing, rotation by this fanning strip 12d, as Figure 10 to Fig. 8, guide rail cam 12q leaves from stop pin 12h, stop pin 12h by spring 12i to the fanning strip 12d slip of advancing, stop pin 12h extracts from lock hole 5e, by extracting of this stop pin 5e, allow wheel 5 rotations.

13 is release mechanism, has following structure: when when above-mentioned remainder 5b separates specific part 5a, can stop the releasing of above-mentioned locked configuration 12, simultaneously, when above-mentioned remainder 5b and specific part 5a installed, mechanism 12 can unlock.

In this case, as Fig. 9, Figure 11, Figure 12, pressure dynamic plate 13a is installed on specific part 5a, holding plate 13b is installed on remainder 5b, on holding plate 13b, slide up and down fastening parts 13c is set freely, on fastening parts 13c, be formed with the fastening slot part 13d that can plug in being formed on the slot part 12r on the knob 12j, be provided with make fastening parts 13c fastening slot part 13d fastening in the last pressing spring 13e of slot part 12r, and, as Figure 13, Figure 14, Figure 15, when when above-mentioned remainder 5b separates specific part 5a, pressure dynamic plate 13a leaves from fastening parts 13c, the fastening slot part 13d of fastening parts 13c by last pressing spring 13e fastening in slot part 12r, thus, the pulling of handling pin 12k is prevented from, the rotation of fanning strip 12d is prevented from, the mistake pulling is handled pin stop pin 12h the extracting from lock hole 5e that 12k caused and is prevented from, the accident of the locking mechanism 12 among the F of particular separation position is removed and is prevented from, the accident rotation of wheel 5 is prevented from, and, as Fig. 9, Figure 11, Figure 12, when remainder 5b and specific part 5a installation, pressure dynamic plate 13a presses fastening parts 13c, fastening parts 13c overcomes upward, and pressing spring 13e is depressed, fastening slot part 13d leaves from slot part 12r, and thus, the pulling of handling pin 12k is allowed to, and then, the rotation of fanning strip 12d is allowed to, and stop pin 12h is allowed to from extracting of lock hole 5e, and mechanism 12 can unlock.

Because present embodiment has said structure, therefore, when the above-mentioned seat portion 2 of user boarding, by utilizing wheel separating mechanism 7 to separate the fan shape specific part 5a of a part that comprises above-mentioned toroidal wheel 5 peripheries from remainder 5b, can form the necessary open space K of boarding, and boarding under the wheel 5 interferential states can be subjected to, when using wheelchair, isolating specific part 5a can be combined with remainder 5b, can make for example easily boarding successfully of user such as old man of patient, people with disability, need nursing.

At this moment, owing to be provided with the detent mechanism 10 that above-mentioned wheel 5 can be positioned above-mentioned particular separation position F, therefore in this case, as Fig. 2, Fig. 3, Fig. 4, when making wheel 5 when particular separation position F rotates, the alignment pin 10f of the frame side of detent mechanism 10 inserts the locating hole 10j that is embedded in wheel 5 sides, wheel 5 can be positioned particular separation position F thus, can be easy to wheel 5 is positioned to be used to form the particular separation position F of boarding seat portion 2 necessary open space K, the positioning action of wheel 5 can be improved, and the convenience of use can be improved.

In this case, owing on said frame 1, be provided with the mechanism for lifting 9 that above-mentioned wheel 5 is risen from ground plane M, therefore, when wheel 5 being positioned be used to form the particular separation position F of boarding seat portion 2 necessary open space K, wheel 5 at Fig. 7 contacts under the state of ground plane M, change manipulation connector 9k by utilizing handle 9n to draw, foot part 9f is contacted with ground plane M, wheel 5 is risen from ground plane M, because wheel 5 rises from ground plane M, wheel 5 can rotate freely, can easily make wheel 5 rotations by enough handss, can easily position operation by detent mechanism 10, and, in this case, owing to be provided with interlinked mechanism 11, be used for when above-mentioned wheel 5 rises, making above-mentioned detent mechanism 10 position action, simultaneously when contacting to earth, wheel 5 make above-mentioned detent mechanism 10 remove action, therefore as Fig. 6, when wheel 5 contacts to earth, action roller 10h is pulled by lobe plate 10g, alignment pin 10f extracts from locating hole 10j, when wheel 5 rises, as Fig. 4, lobe plate 10g leaves from action roller 10h, at particular separation position F, alignment pin 10f inserts and is embedded in locating hole 10j, can with the rise of wheel 5 or the action interlock that contacts to earth, position the location action of mechanism 10 or remove action, can position operation by detent mechanism 10 more easily, and, in this case, owing to be provided with the locking mechanism 12 that can stop wheel 5 rotations at above-mentioned particular separation position F, as Figure 10, at above-mentioned particular separation position F, lock hole 5e is gone in stop pin 12h intercalation, can stop wheel 5 rotations, wheel 5 accurate in locating are fixed in be used to form the particular separation position F of boarding seat portion 2 necessary open space K, and, in this case, because be provided with release mechanism 13, be used at specific part 5a when above-mentioned remainder 5b separates, stop the releasing of above-mentioned locking mechanism 12, simultaneously when above-mentioned remainder 5b and specific part 5a installation, mechanism 12 can unlock, therefore as Figure 14, when specific part 5a when above-mentioned remainder 5b separates, pressure dynamic plate 13a leaves from fastening parts 13c, the fastening slot part 13d of fastening parts 13c by last pressing spring 13e fastening in slot part 12r, thus, the pulling of handling pin 12k is prevented from, the rotation of fanning strip 12d is prevented from, the mistake pulling manipulation pin stop pin 12h that 12k caused extracts from lock hole 5e and is prevented from, thereby can stop locking mechanism 12 to be removed in the accident of particular separation position F, can stop the rotation of remainder 5b under the separated state of specific part 5a of wheel 5, so can improve safety in utilization.

And, the invention is not restricted to above-mentioned embodiment, also can carry out appropriate change to structure of framework 1, seat portion 2, wheel separating mechanism 7, mechanism for lifting 9, detent mechanism 10, interlinked mechanism 11, locking mechanism 12, release mechanism 13 etc.

More than, can fully reach the purpose of being expected.

Claims

1. wheelchair, it is characterized in that, on framework, be equipped with seat portion, be equipped with the wheel of toroidal simultaneously in the left and right sides of described framework portion, be provided with the wheel separating mechanism in the particular separation position that is used to form the necessary open space of the described seat portion of boarding, described wheel separating mechanism can be divided into the wheel of described toroidal the fan shape specific part and the remainder except that described specific part of a part that comprises described wheel periphery, and be provided with can be with the detent mechanism of described wheel alignment in described particular separation position.

2. wheelchair according to claim 1 is characterized in that, is provided with the mechanism for lifting that described wheel is risen from ground plane on described framework.

3. wheelchair according to claim 2 is characterized in that, is provided with interlinked mechanism, is used for making described detent mechanism position action when described wheel rises, and when described wheel contacts to earth, makes described detent mechanism remove action simultaneously.

4. according to each described wheelchair in the claim 1 to 3, it is characterized in that, be provided with the locking mechanism that can stop described wheel rotation in described particular separation position.

5. wheelchair according to claim 4 is characterized in that, is provided with release mechanism, be used at described specific part when described remainder separates, stop the releasing of described locking mechanism, when described remainder and specific part installation, can remove described locking mechanism simultaneously.