DE3809043C2 - Control device for electric wheelchairs or the like - Google Patents
Control device for electric wheelchairs or the likeInfo
- Publication number
- DE3809043C2 DE3809043C2 DE19883809043 DE3809043A DE3809043C2 DE 3809043 C2 DE3809043 C2 DE 3809043C2 DE 19883809043 DE19883809043 DE 19883809043 DE 3809043 A DE3809043 A DE 3809043A DE 3809043 C2 DE3809043 C2 DE 3809043C2
- Authority
- DE
- Germany
- Prior art keywords
- control lever
- sealing part
- sealing
- control device
- cap
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Classifications
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05G—CONTROL DEVICES OR SYSTEMS INSOFAR AS CHARACTERISED BY MECHANICAL FEATURES ONLY
- G05G25/00—Other details or appurtenances of control mechanisms, e.g. supporting intermediate members elastically
- G05G25/04—Sealing against entry of dust, weather or the like
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05G—CONTROL DEVICES OR SYSTEMS INSOFAR AS CHARACTERISED BY MECHANICAL FEATURES ONLY
- G05G9/00—Manually-actuated control mechanisms provided with one single controlling member co-operating with two or more controlled members, e.g. selectively, simultaneously
- G05G9/02—Manually-actuated control mechanisms provided with one single controlling member co-operating with two or more controlled members, e.g. selectively, simultaneously the controlling member being movable in different independent ways, movement in each individual way actuating one controlled member only
- G05G9/04—Manually-actuated control mechanisms provided with one single controlling member co-operating with two or more controlled members, e.g. selectively, simultaneously the controlling member being movable in different independent ways, movement in each individual way actuating one controlled member only in which movement in two or more ways can occur simultaneously
- G05G9/047—Manually-actuated control mechanisms provided with one single controlling member co-operating with two or more controlled members, e.g. selectively, simultaneously the controlling member being movable in different independent ways, movement in each individual way actuating one controlled member only in which movement in two or more ways can occur simultaneously the controlling member being movable by hand about orthogonal axes, e.g. joysticks
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05G—CONTROL DEVICES OR SYSTEMS INSOFAR AS CHARACTERISED BY MECHANICAL FEATURES ONLY
- G05G9/00—Manually-actuated control mechanisms provided with one single controlling member co-operating with two or more controlled members, e.g. selectively, simultaneously
- G05G9/02—Manually-actuated control mechanisms provided with one single controlling member co-operating with two or more controlled members, e.g. selectively, simultaneously the controlling member being movable in different independent ways, movement in each individual way actuating one controlled member only
- G05G9/04—Manually-actuated control mechanisms provided with one single controlling member co-operating with two or more controlled members, e.g. selectively, simultaneously the controlling member being movable in different independent ways, movement in each individual way actuating one controlled member only in which movement in two or more ways can occur simultaneously
- G05G9/047—Manually-actuated control mechanisms provided with one single controlling member co-operating with two or more controlled members, e.g. selectively, simultaneously the controlling member being movable in different independent ways, movement in each individual way actuating one controlled member only in which movement in two or more ways can occur simultaneously the controlling member being movable by hand about orthogonal axes, e.g. joysticks
- G05G2009/04703—Mounting of controlling member
- G05G2009/04707—Mounting of controlling member with ball joint
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05G—CONTROL DEVICES OR SYSTEMS INSOFAR AS CHARACTERISED BY MECHANICAL FEATURES ONLY
- G05G9/00—Manually-actuated control mechanisms provided with one single controlling member co-operating with two or more controlled members, e.g. selectively, simultaneously
- G05G9/02—Manually-actuated control mechanisms provided with one single controlling member co-operating with two or more controlled members, e.g. selectively, simultaneously the controlling member being movable in different independent ways, movement in each individual way actuating one controlled member only
- G05G9/04—Manually-actuated control mechanisms provided with one single controlling member co-operating with two or more controlled members, e.g. selectively, simultaneously the controlling member being movable in different independent ways, movement in each individual way actuating one controlled member only in which movement in two or more ways can occur simultaneously
- G05G9/047—Manually-actuated control mechanisms provided with one single controlling member co-operating with two or more controlled members, e.g. selectively, simultaneously the controlling member being movable in different independent ways, movement in each individual way actuating one controlled member only in which movement in two or more ways can occur simultaneously the controlling member being movable by hand about orthogonal axes, e.g. joysticks
- G05G2009/04766—Manually-actuated control mechanisms provided with one single controlling member co-operating with two or more controlled members, e.g. selectively, simultaneously the controlling member being movable in different independent ways, movement in each individual way actuating one controlled member only in which movement in two or more ways can occur simultaneously the controlling member being movable by hand about orthogonal axes, e.g. joysticks providing feel, e.g. indexing means, means to create counterforce
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Mechanical Control Devices (AREA)
Description
Die Erfindung betrifft eine Steuereinrichtung der im Oberbegriff des Anspruchs 1 genannten Art für elektrische Rollstühle oder dergleichen.The invention relates to a control device in the Preamble of claim 1 mentioned type for electrical Wheelchairs or the like.
Eine Steuereinrichtung der betreffenden Art ist durch die GB-PS 2 040 465 bekannt. Bei dieser Steuereinrichtung bestehen die Dichtmittel allein aus einem Dichtbalg, der sich zwischen dem Gehäuseteil und dem Steuerhebel erstreckt. Ein derartiger Dichtbalg kann jedoch mechanisch oder chemisch, beispielsweise durch Handschweiß, beschädigt oder zerstört werden, so daß er seine Funktion verliert. Außerdem erhöht er die zur Betätigung des Steuerhebels erforderlichen Kräfte, was einen Nachteil insbesondere für einen solchen Personen kreis von Rollstuhlfahrern darstellt, die nur über geringe Muskelkräfte verfügen. Hinzu kommt noch der weitere Nachteil, daß diese durch den Dichtbalg bedingten erhöhten Steuerkräfte temperaturabhängig sind.A control device of the type in question is through GB-PS 2 040 465 known. With this control device the sealants consist solely of a sealing bellows, which is extends between the housing part and the control lever. On however, such a sealing bellows can be mechanical or chemical, for example by hand sweat, damaged or destroyed become so that it loses its function. He also increases the forces required to operate the control lever, which is a disadvantage especially for such people represents a group of wheelchair users who have only minor Have muscle strength. In addition, there is the further disadvantage that this increased control forces caused by the sealing bellows are temperature dependent.
Durch GB 252 291 ist ein Schaltknüppel für Getriebe be kannt, bei dem eine Kappe durch eine Feder mit Kraft gegen ein domförmiges Teil gedrückt wird, so daß ständig eine Reib anlage gebildet ist. Die Reibung einer solchen Konstruktion ist beträchtlich, zumal sich noch Schmutz im Reibbereich an sammeln kann, da die kalottenförmige Kappe jeweils teilweise nach unten freiliegt. Wegen der beträchtlichen Reibung ist elektrische Rollstühle nicht geeignet, bei denen es auf die Leichtgängigkeit in hohem Maße ankommt, weil Benutzer solcher Rollstühle in der Regel nur geringe Steuerkräfte aufbringen können, insbesondere nicht über längere Zeit, wenn der Roll stuhl längere Zeit benutzt werden soll.GB 252 291 is a shift stick for gearbox knows, in which a cap by a spring with force against a dome-shaped part is pressed so that there is a constant friction plant is formed. The friction of such a construction is considerable, especially since there is still dirt in the friction area can collect, since the dome-shaped cap is partially exposed down. Because of the considerable friction Electric wheelchairs are not suitable where the Smoothness arrives to a high degree because users of such As a rule, wheelchairs only exert low control forces can, especially not for a long time when the roll chair should be used for a long time.
Der Erfindung liegt die Aufgabe zugrunde, eine Steuer einrichtung der betreffenden Art zu schaffen, bei der die Dichtmittel zur Abdichtung zwischen Steuerhebel und Gehäuse teil eine hohe Sicherheit gegen mechanische und chemische Beschädigung haben und bei der insbesondere die Steuerkräfte gering sind.The invention has for its object a tax to create a facility of the type concerned, in which the Sealant for sealing between control lever and housing some high security against mechanical and chemical Have damage and especially the taxpayers are low.
Die der Erfindung zugrundeliegende Aufgabe wird durch die im Kennzeichen des Anspruchs 1 angegebene Lehre gelöst.The object underlying the invention is achieved by solved the teaching specified in the characterizing part of claim 1.
Bei der erfindungsgemäßen Ausbildung der Dichtmittel ist im wesentlichen nur die Kappe mechanischen oder chemischen Angriffen ausgesetzt, beispielsweise durch Handschweiß. Da die Kappe einen festen Körper bildet und aus entsprechend widerstandsfähigem Material bestehen kann, besteht praktisch völlige Sicherheit gegen mechanische und chemische Beschädi gungen. Dies gilt auch für das Dichtteil mit der kalottenför migen Außenfläche, sofern diese überhaupt mechanischen oder chemischen Angriffen ausgesetzt sein kann. Durch das Spiel zwischen der ringförmigen Innenfläche oder Innenkante und der kalottenförmigen Außenfläche des Dichtteils ist ein Spalt gebildet, durch den eine Reibanlage vermieden ist, so daß hierdurch Reibkräfte und damit größere Steuerkräfte nicht auftreten können. Um auszuschließen, daß durch diesen Spalt, wenn auch in geringfügigem Maße, Staub in das Innere eindrin gen kann, ist zwischen dem Steuerhebel und dem Dichtteil oder dem Gehäuseteil ein Dichtbalg angeordnet. Dieser verhindert sicher das Eindringen von Staub, führt jedoch gleichzeitig nicht zu Reibkräften, die die Leichtgängigkeit beeinträchti gen.In the formation of the sealant according to the invention essentially just the cap mechanical or chemical Exposed to attacks, such as hand sweat. There the cap forms a solid body and made accordingly resistant material, is practical complete security against mechanical and chemical damage gung. This also applies to the sealing part with the cap outer surface, if this is mechanical or at all can be exposed to chemical attacks. Through the game between the annular inner surface or inner edge and the dome-shaped outer surface of the sealing part is a gap formed by which a friction system is avoided, so that this does not cause frictional forces and therefore larger control forces may occur. To rule out that through this gap, albeit slightly, dust inside gen is between the control lever and the sealing part or a bellows is arranged in the housing part. This prevents certainly the ingress of dust, but leads at the same time not to frictional forces that impair smooth running gene.
Die Kappe weist eine ringförmige Innenfläche oder Innen kante auf, die dicht benachbart mit Spiel zu der kalottenför migen Außenfläche des Dichtteils verläuft. Der zwischen dem Steuerhebel und dem Dichtteil oder dem Gehäuseteil angeordne te Dichtbalg ist an sich bereits bekannt. Während die mecha nischen Dichtmittel in Form der Kappe und der kalottenförmi gen Außenfläche den wesentlichen Anteil der Abdichtung über nehmen, übernimmt der Dichtbalg die Feinabdichtung beispiels weise gegenüber Staub. Die Abdichtung ist daher hermetisch. Da der Dichtbalg mechanischen oder chemischen Angriffen nicht ausgesetzt ist, kann er sehr dünn und flexibel ausgebildet werden, so daß er praktisch kaum die Stellkräfte des Steu erhebels erhöht, was für Fahrer von besonderem Vorteil ist, die nur über ganz geringe Muskelkräfte verfügen. Die glatte, gerundete Kontur der kalottenförmigen Außenfläche schützt vor unbeabsichtigtem Einklemmen von Gegenständen oder Fingern, so daß die Totmannfunktion zu keinem Zeitpunkt in Frage gestellt ist.The cap has an annular inner surface or interior edge on that closely adjacent with play to the calotte outer surface of the sealing part. The between that Control lever and the sealing part or the housing part arranged te sealing bellows is already known per se. While the mecha African sealant in the form of the cap and the dome-shaped towards the outer surface the essential part of the seal take, the sealing bellows takes over the fine sealing, for example wise to dust. The seal is therefore hermetic. Because the bellows does not mechanical or chemical attacks exposed, it can be very thin and flexible be, so that he practically hardly the control forces of the tax elevated, which is particularly advantageous for drivers, who have very little muscle power. The smooth, rounded contour of the spherical outer surface protects against accidental jamming of objects or fingers, so that the dead man function was never questioned is.
Zweckmäßigerweise weist die Kappe eine kegelige Innen fläche auf, insbesondere ist sie insgesamt kegelförmig ausge bildet. Aus diese Weise ergibt sich nur ein schmaler, ring förmiger Dichtungsbereich, so daß die Gefahr des Einklemmens von Fremdkörpern wie beispielsweise Sand verringert ist.The cap expediently has a conical interior surface, in particular it is conical overall forms. This results in only a narrow, ring shaped sealing area, so that the risk of pinching of foreign bodies such as sand is reduced.
Anhand der Zeichnung soll die Erfindung an einem Ausfüh rungsbeispiel näher erläutert werden.On the basis of the drawing, the invention is intended to be an embodiment Example are explained in more detail.
Die Zeichnung zeigt eine Steuereinrichtung für elektrische Rollstühle oder dergleichen, die ein Gehäuseteil 1 aufweist, das in irgendeiner passenden Weise an der Armlehne eines Rollstuhls befestigt, vorzugsweise in diese teilweise einge lassen ist. Mit dem Gehäuseteil 1 ist über ein Universalgelenk 2 ein Steuerhebel 3 allseitig verschwenkbar verbunden. Am Ende des Steuerhebels 3 befindet sich eine Betätigungskugel 4.The drawing shows a control device for electric wheelchairs or the like, which has a housing part 1 , which is attached in any suitable manner to the armrest of a wheelchair, preferably is partially in this. A control lever 3 is pivotally connected to the housing part 1 via a universal joint 2 . At the end of the control lever 3 there is an actuating ball 4 .
Auf einer Oberseite 5 des Gehäuseteils 1 ist ein Dichtteil 6 dicht befestigt, das eine kalottenförmige Außenfläche 7 auf weist, die von einer kegeligen Innenfläche 8 einer kegelför migen Kappe 9 mit sehr geringem Spiel übergriffen wird. Die kegelförmige Kappe 9 geht in einen zylindrischen Teil 10 über, der einen Innenflansch 11 aufweist, der zwischen dem unteren Teil der Betätigungskugel 4 und einer Schulter 13 an dem Steuerhebel 3 eingeklemmt ist, indem die Betätigungskugel 4 auf einen Gewindezapfen 13 des Steuerhebels 3 aufgeschraubt ist.On a top 5 of the housing part 1 , a sealing part 6 is tightly attached, which has a spherical outer surface 7 , which is overlapped by a conical inner surface 8 of a conical cap 9 with very little play. The conical cap 9 merges into a cylindrical part 10 which has an inner flange 11 which is clamped between the lower part of the actuating ball 4 and a shoulder 13 on the control lever 3 by screwing the actuating ball 4 onto a threaded pin 13 of the control lever 3 .
Eine Wendelfeder 14 stützt sich oben an einem Zapfen 15 ab, der quer in dem Steuerhebel 3 steckt, während sie unten gegen ein auf dem Steuerhebel 3 verschieblich gehaltenes, im wesentlichen zylindrisches Teil 16 drückt, das mit seiner unteren Stirnkante 17 auf einer Scheibe 18 aufliegt, die in bezug zu dem Gehäuseteil 1 fest ist. Durch die Wendelfeder 14 ist somit der Steuerhebel 3 allseitig in Richtung auf seine mittlere Ruhelage vorgespannt, in die er ohne Betätigung immer zurückkehrt. A spiral spring 14 is supported at the top of a pin 15 from the inserted transversely in the control lever 3 while pressing down against a on the control lever 3 is slidably held, substantially cylindrical part 16 which rests with its lower front edge 17 on a disk 18 which is fixed in relation to the housing part 1 . By the helical spring 14 of the control lever 3 is thus sides biased towards its central rest position, in which it always returns without actuation.
Mit dem oberen Ende des zylindrischen Teils 16 ist das obere Ende eines Dichtbalges 18 dicht verbunden, dessen unteres Ende mit einem Teil 19 dicht verbunden ist, das wiederum mittels Schrauben 20 dicht mit dem Gehäuseteil 1 verbunden ist. Da das zylindrische Teil 16 dicht auf dem Steuerhebel 3 gleitet, ist somit im Ergebnis der Steuerhebel 3 dicht über dem Dichtbalg 18 mit dem Gehäuseteil 1 verbunden. Der Dichtbalg 18 besteht aus sehr dünnem Material und beeinflußt daher nicht die Rückstell- und Steuerkräfte des Steuerhebels 3.With the upper end of the cylindrical part 16 , the upper end of a sealing bellows 18 is tightly connected, the lower end of which is tightly connected to a part 19 which in turn is tightly connected to the housing part 1 by means of screws 20 . As a result, since the cylindrical part 16 slides tightly on the control lever 3 , the control lever 3 is connected to the housing part 1 closely above the sealing bellows 18 . The sealing bellows 18 consists of very thin material and therefore does not influence the restoring and control forces of the control lever 3 .
Claims (2)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE8803669U DE8803669U1 (en) | 1988-03-18 | 1988-03-18 | Control device for electric wheelchairs or similar. |
DE19883809043 DE3809043C2 (en) | 1988-03-18 | 1988-03-18 | Control device for electric wheelchairs or the like |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19883809043 DE3809043C2 (en) | 1988-03-18 | 1988-03-18 | Control device for electric wheelchairs or the like |
Publications (2)
Publication Number | Publication Date |
---|---|
DE3809043A1 DE3809043A1 (en) | 1989-09-28 |
DE3809043C2 true DE3809043C2 (en) | 1997-05-07 |
Family
ID=6350037
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE8803669U Expired DE8803669U1 (en) | 1988-03-18 | 1988-03-18 | Control device for electric wheelchairs or similar. |
DE19883809043 Expired - Fee Related DE3809043C2 (en) | 1988-03-18 | 1988-03-18 | Control device for electric wheelchairs or the like |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE8803669U Expired DE8803669U1 (en) | 1988-03-18 | 1988-03-18 | Control device for electric wheelchairs or similar. |
Country Status (1)
Country | Link |
---|---|
DE (2) | DE8803669U1 (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19519941C1 (en) * | 1995-06-02 | 1997-03-13 | Gerhard Dipl Ing Wergen | Joystick control for computer input or self-propelled wheelchair etc. |
DE19621392A1 (en) * | 1996-05-28 | 1997-12-04 | Same Spa | Control device |
FR2851811B1 (en) * | 2003-02-28 | 2006-03-03 | Renault Sa | HERMETIC SPEED CONTROL LEVER TRIM |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB252291A (en) * | 1925-05-22 | 1926-05-27 | Thomas Blackwood Murray | Means for interlocking the actuating members of variable speed gearing |
US3934485A (en) * | 1974-06-17 | 1976-01-27 | Clark Equipment Company | Resistance-producing structure for a transmission shifting mechanism |
GB2040465B (en) * | 1979-01-17 | 1983-04-13 | Bideford Electronics Ltd | Lever operated control unit |
-
1988
- 1988-03-18 DE DE8803669U patent/DE8803669U1/en not_active Expired
- 1988-03-18 DE DE19883809043 patent/DE3809043C2/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
DE3809043A1 (en) | 1989-09-28 |
DE8803669U1 (en) | 1988-05-05 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8110 | Request for examination paragraph 44 | ||
D2 | Grant after examination | ||
8364 | No opposition during term of opposition | ||
8339 | Ceased/non-payment of the annual fee |