EP2520265A1 - Attachment device - Google Patents

Abstract

The device (10) has a pivoting part (14) comprising a pivotable bearing part (38) and arranged at an electrically-operated wheel. The pivoting part has a locking element (18), and a frame part (12) has a pivotable bearing part (39). The pivoting part is locked with the frame part in a detachable manner. The locking element is arranged in a movable manner relative to a pivoting part body (15) and engaged by a rear handle (16) of the frame part when the pivoting part is locked to the frame part. A spring element (32) i.e. spiral spring, is arranged between the locking element and the body.

Description

The invention relates to a fastening device for fastening a, in particular electrically driven, wheelchair wheel on the frame of a wheelchair, wherein the fastening device comprises a wheelchair wheel arranged, a first pivot bearing part exhibiting pivoting part, the pivoting part comprises a locking element and the fastening device further arranged on the frame, a second pivot bearing part having frame part and the pivot member is detachably lockable with the frame part.

Such a fastening device is known from DE 10 2004 039 519 B3 known. The known fastening device serves to connect a wheelchair wheel arranged on a pivoting part to a frame part of a wheelchair. In the connection of the pivoting part with the frame part of the wheelchair, a locking bolt of the pivoting part is inserted into a locking bushing of the frame part. The locking bushing is arranged on the inside of the frame part, ie on the side facing away from the wheelchair wheel. There, the locking bolt is held by a retaining spring of the frame part. In order to release the pivoting part of the frame part, the connection to the locking sleeve, ie on the side facing away from the wheelchair wheel side of the frame part, must be solved. The locking socket is very difficult to access. Further, a projection on the pivot member is formed by the locking bolt, whereby the pivot member is not flat on the side of the pivot member on which the locking bolt is arranged, can be stored on a flat surface.

The invention is the object of the invention to provide a fastening device that is easy to operate and manageable. At the same time, the pivoting part of the fastening device, at least on one side, should be easy to store on a flat surface.

This object is achieved by a fastening device for fastening a, in particular electrically driven, wheelchair wheel on the frame of a wheelchair, wherein the fastening device comprises a disposable on the wheelchair wheel, a first pivot bearing part exhibiting pivoting part, the pivoting part comprises a locking element and the fastening device further can be arranged on the frame comprising a second pivot bearing member having frame member, wherein the pivot member is detachably lockable to the frame member and wherein the locking member is arranged relative to a pivot member movable on the pivot member body and locked in the frame part pivot member, the locking element is engaged behind by a rear grip of the frame part.

By provided on the pivot member locking element, which is preferably actuated by a user from the pivoting part forth, the lock between the pivot member and the frame member can be closed and / or solved in a simple manner. The pivoting part, which is preferably plate-shaped, is, seen from the frame part, outboard, d. H. pointing the way from the frame, provided and thus easily accessible and manageable for a user. In particular for a physically impaired user thereby the assembly and / or disassembly of the wheelchair is simplified. By means of the locking member provided on the locking element, the combination of wheelchair and swivel part from the rest of the wheelchair can be removed and stored separately from the rest of the wheelchair, for example in the trunk of a vehicle.

When locked with the frame part, the locking element engages behind a, preferably designed as a projection, rear grip of the frame part. By the rear handle a secure, firm connection between the frame part and pivoting part can be achieved.

If the locking element can be actuated from the pivoting part, the arrangement of a locking bolt on the pivoting part and a securing spring on the frame side can be dispensed with. As a result, a particularly flat design of the pivoting part is made possible.

The actuation of the locking element can be done by means of a tool, for example by means of a wrench. Alternatively or additionally, the operation of the locking element can be vornehmbar tool-free by the user. For this purpose, for example, a rotatable handle may be provided on the pivoting part.

In a preferred embodiment of the invention, a spring element is arranged between the locking element and the pivoting part body, by which an automatic locking of the pivoting part on the frame part, when merging the pivoting part is made possible with the frame part.

The locking element of the swiveling part and / or the rear grip of the frame part preferably have a locking element bevel or a rear grip bevel, so that the locking element, in particular against the spring force of the spring element, is pushed back by pressing the swiveling part against the rear grip of the frame part. As soon as the pivoting part rests completely on the frame part, the spring element can relax and displace the locking element into the locking position, so that it engages behind the rear grip of the frame part. The pivoting part is thereby formed latched to the frame part. The user only has to press the swivel part together with the wheelchair wheel against the frame part arranged on the frame in order to lock the swivel part to the wheelchair wheel on the frame part of the wheelchair.

The locking element is preferably actuatable by an actuating element arranged on the pivoting part and acting on the locking element.

The actuating element can be designed in the form of an eccentric. Preferably, an actuating element is provided in the form of a symmetrically shaped cam. As a result of the actuating element, a rotational movement performed by the user can be converted into a linear movement of the locking element. In this case, the locking element can be pulled back against the restoring force of the spring element. The actuating element can be designed such that both a clockwise rotational movement and a counterclockwise rotational movement lead to a displacement of the locking element against the force of the spring element and thus to the unlocking. The user can solve by a rotary movement, the locking of the pivoting part on the frame part. Furthermore, that can Pivoting part be designed such that by means of a rotation of the actuating element, the locking element engages behind the rear handle of the frame part.

The pivoting part may furthermore be designed so that the user can close and open the locking between the frame part and the pivoting part by a rotation of the actuating element. For this purpose, the pivoting part can be designed, for example, such that the locking between the frame part and the pivoting part is closed by an at least partial rotation of the actuating element in the clockwise direction and is released by an at least partial rotation of the actuating element in the counterclockwise direction.

Alternatively, the actuating element may be configured such that the locking of the pivoting part on the frame part is achieved in an at least partial rotation in the clockwise direction and in an at least partial rotation of the actuating element in the counterclockwise direction. For this purpose, at least one stop can be provided on the pivoting part body and / or the actuating element, for example, by means of which the unactuated actuating element remains in a middle position which effects a closed locking between the pivoting part and the frame part by the locking element. The stop can be arranged such that the actuating element is rotatable clockwise and counterclockwise. Alternatively, the stop may be arranged such that the actuating element is in one direction, i. H. clockwise or counterclockwise, is not rotatable. The operation of the fastening device is very simple for the user by the described embodiments.

In a particularly preferred embodiment of the invention, the actuating element, in particular symmetrically arranged or formed on a shaft. The actuator is in this case by means of the shaft which can be passed through the wheelchair wheel operable. The locking element is in by the Wheelchair wheel guided by the shaft of the locking element opposite side of the wheelchair wheel, so the wheelchair frame pioneering side of the wheelchair wheel actuated. The shaft is in particular axially, ie centrally through the wheelchair wheel, passed. An actuation of the actuating element and thereby of the locking element is thereby made particularly easy for the user. The operation of the shaft can be done conveniently at the height of the center of the wheelchair wheel.

The fastening device is preferably characterized in that at least one fastening means is provided on the pivot plate, by which a part of the wheelchair wheel, in particular a retaining plate of the wheelchair wheel, on the pivoting part can be fastened. On the arrangement of a wheelchair wheel axle or a pivot pin on the pivot part body can be dispensed with. Without a projecting beyond the pivoting axle pivot, the pivoting part together with the attached impeller just be parked on the ground or another area. The combination of swivel and wheelchair wheel can be easily stowed. In addition, the shaft can remain rotationally fixed to the pivoting part during a rotation of the wheelchair wheel. The visible from outside the wheelchair wheel end of the shaft is always in the same position. A arranged at the end of the shaft handle can thereby always independently of the respective position of the wheelchair wheel occupy an optimally accessible to the user position. Such a handle, for example, always be aligned horizontally in the direction of travel. Regardless of the position of the wheelchair wheel it is then always easy to use and handle for the user.

The locking element preferably comprises a pawl. The pawl may be formed substantially plate-shaped, whereby a space-saving arrangement in the pivoting part body is made possible. The pawl can be arranged in a recess of the pivoting part body and guided in this. Through the recess of the swivel part body while a positive guidance of the pawl is realized.

The first pivot bearing part may comprise a hinge pin, the second pivot bearing part a projection. In a compound of pivoting part and frame part of the hinge pin can be overlapped by the protruding from the frame part projection of the frame part. The projection is formed in particular obliquely projecting from the frame part. The hinge pin is preferably arranged in the direction of travel. The hinge pin may further be provided completely between the top and the bottom of the pivot member. In the pivoting part, for example, a recess may be provided, in which the hinge pin is fixed at its two ends. The pivoting part is formed particularly flat because the retaining bolt does not protrude beyond the top or bottom of the pivoting part. Due to the planar design of the pivoting part, this can be stored together with a wheelchair wheel attached thereto on the ground. This also allows a space-saving storage in the trunk of a vehicle.

The swiveling part can furthermore have a securing projection which at least partially overlaps the frame part when the swiveling part bears against the frame part. After the coupling of the pivot bearing parts, the pivoting part can be pivoted by a pivoting movement completely to the frame part. In this case, the locking element engage and create a secure connection. By the securing projection, the pivoting part is then formed immovable relative to the frame part in at least one direction.

To supply electrical components of the wheelchair wheel can be provided between the frame part and pivot part of an electrical connector in the form of corresponding connector on the frame part and pivoting part. By the electrical connector, for example, a motor of the wheelchair wheel can be powered by a battery arranged on the frame. Furthermore, control signals can be transmitted by the user via the electrical connector between wheelchair and wheelchair frame. Preferably, at least one connector of the electrical connector in the form of a flat connector is formed. By using a flat connector on the pivot part of this can be made very flat. As a result, the pivoting part together with the wheelchair wheel can be easily stored on a flat surface. Particularly preferred are used to form the electrical connector two pairs of mutually arranged connectors in the form of tab connectors.

In a particularly preferred embodiment of the invention, the frame part has a sleeve for receiving a wheelchair wheel axle. By means of the sleeve standard wheelchair wheels can be attached to the frame part. It is for example possible to attach an electrically driven wheelchair wheel to the frame part by the pivoting part. Alternatively, a standard non-motorized wheelchair wheel may be attached to the sleeve of the frame member. An electrically driven wheelchair wheel can be easily replaced with a manually driven wheelchair wheel. Alternatively, a motorized wheelchair wheel formed with a wheelchair wheel axle may be secured to the frame member by means of the sleeve. A framework of a wheelchair provided with a frame part according to the invention is thus particularly flexibly adaptable to the needs of a user.

The sleeve preferably has an inner diameter suitable for receiving a 12 mm or 12.7 mm (1/2 inch) OD wheel wheel axle. By means of such a sleeve, the most common wheelchair wheel models can be added to the frame part.

On the frame part may further be provided a receiving opening for a tilt protection. The anti-tipper can be designed essentially in the form of a rod, at the end of which one or more wheels are fastened. The end of the rod, which is not provided with wheels, can be inserted into the receiving opening for the anti-tip device. By the possibility of mounting the anti-tipper on the frame part of the wheelchair can be particularly well protected from tipping over.

On the frame part, a locking bolt may be provided. The anti-tilt device can thereby be secured in the receiving opening by the locking bolt.

The locking pin is preferably arranged by at least one screw on the frame part. The locking bolt has the advantage that it is arranged captive on the frame part.

The invention further comprises a frame part and a pivoting part of a fastening device described above.

The invention finally relates to a wheelchair wheel with a previously described pivoting part and a wheelchair frame with a previously described frame part.

Further advantages will become apparent from the drawing, in which a preferred embodiment of a fastening device according to the invention is shown.

Fig. 1

eine perspektivische Darstellung einer erfindungsgemäßen Befestigungsvorrichtung, die ein Rahmenteil und ein Schwenkteil umfasst, aus der Perspektive eines Rollstuhlrades;

Fig. 2

eine Seitenansicht der Befestigungsvorrichtung aus Fig. 1 mit einer an dem Schwenkteil angeordneten Halteplatte eines Rollstuhlrades;

Fig. 3

eine perspektivische Darstellung des Rahmenteils aus Fig. 1;

Fig. 4

eine Schnittansicht der Befestigungsvorrichtung mit auf das Rahmenteil aufgesetztem Schwenkteil und auf das Schwenkteil aufgesetzter Halteplatte; und

Fig. 5

eine perspektivische Darstellung der Befestigungsvorrichtung gemäß Fig. 4 aus der Perspektive eines Rollstuhlrahmens.

Show it:

Fig. 1

a perspective view of a fastening device according to the invention comprising a frame part and a pivoting part, from the perspective of a wheelchair wheel;

Fig. 2

a side view of the fastening device Fig. 1 with a arranged on the pivoting part retaining plate of a wheelchair wheel;

Fig. 3

a perspective view of the frame part Fig. 1 ;

Fig. 4

a sectional view of the fastening device with attached to the frame part of the pivoting part and on the pivoting part patch plate; and

Fig. 5

a perspective view of the fastening device according to Fig. 4 from the perspective of a wheelchair frame.

Fig. 1 shows a fastening device 10 according to the invention, which comprises a frame part 12 which is attachable to the frame of a wheelchair (not shown), and a plate-shaped pivot member 14 having a pivot member body 15 on which a wheelchair wheel (not shown) can be arranged. By the fastening device 10, an easily detachable connection between the attachable to the pivot member 14 wheelchair wheel and connectable to the frame member 12 frame can be made.

The presentation of the Fig. 1 shows the fastening device 10 in a position in which the pivoting part 14 is released from the frame part 12. The frame part 12 comprises a rear projection 16 which is designed as a first projection and, in the case of a pivoting part 14 locked to the frame part 12, is engaged behind by a locking element 18 which is designed in the form of a pawl.

To the locking member 18 for releasing the lock between the frame member 12 and the pivot member 14 in the direction of an arrow 24, ie, to be able to slide down, an opening 26 is formed in the locking member 18, in which an actuator 28 is rotatably arranged. The actuator 28 is in the form of a cam, wherein the cam is formed symmetrically to the center plane and is centrally connected at its center with a shaft 30 which is axially passable through the hub of the wheelchair wheel.

The shaft 30 can thereby be conveniently operated from outside the wheelchair wheel. The shaft 30 is very easily accessible to a user. If the actuating element 28 is rotated by a rotation of the shaft 30, the locking element 18 is displaced in the direction of the arrow 24, against the restoring force of a spring element 32, which is designed in the form of a helical spring. As a result, the locking element 18 no longer engages behind the rear grip 16 of the frame part 12. The pivoting part 14 can now be pivoted away from the frame part 12 in the direction of an arrow 34 together with the wheelchair wheel arranged thereon.

By pivoting away the pivoting part 14, an electrical plug connection for supplying electrical components of the wheelchair wheel between the frame part 12 and the pivoting part 14 is released. The connector comprises two connectors 36a, 36b in the form of tab connectors. Due to the design of the connectors 36a, 36b of the electrical connector in the form of tab connectors both the frame part 12 and the pivot member 14 can be formed very flat on the mutually facing sides.

In order to completely remove the pivoting part 14 from the frame part 12, the pivoting part 14 has to be moved in the direction of the arrow 24 after the pivoting movement, about a first pivot bearing part 38 in the form of a hinge pin, which is arranged on the pivoting part body 15, from the attack of a second one Swivel bearing parts 39 in the form of a second projection of the frame part 12 to solve.

This in Fig. 1 Wheelchair wheel, not shown, is connected to the pivoting part 14 via fastening means, of which, for reasons of clarity, only a first fastening means 40a is provided with a reference numeral. The pivot member 14 is characterized achbenzene free and thus very flat and easily stowed.

The fastening device 10 is further in Fig. 2 shown, wherein in this illustration, a holding plate 41 of the wheelchair wheel is arranged on the pivot member 14.

As if from a synopsis of Fig. 1 and 2 it can be seen, the first pivot bearing part 38 is held in both holes 42a, 42b of the pivot member body 15. The hinge pin is aligned in the direction of travel. As in particular from Fig. 2 it can be seen, the hinge pin is completely disposed between its side facing the frame part 12 side 44 and the holding plate 41 facing side of the pivot member body 15. The pivot member 14 has on its side facing the frame part 12 side 44 no projection and is also, as previously mentioned, formed achsbolzenfrei. The pivoting part 14 can thereby, together with the attached wheelchair wheel on its side 44 on a flat surface, for example, on the floor of a trunk, are stored. As a result, a particularly space-saving and easy stowage of the pivoting part 14 is made possible.

Fig. 3 shows the frame member 12 after removal of the pivot member 14. The frame member 12 is mounted by clamps 46, 48 to the frame of a wheelchair (not shown). The plug connector 36a is connected to an electrical line 50 for supplying power to the wheelchair wheel electric drive (not shown) and / or for transmitting control signals and / or sensor signals.

The second pivot bearing part 39 of the frame part 12, which engages over the first pivot bearing part 38 of the pivoting part 14, is in Fig. 3 clearly visible.

To save weight, the frame part 12 has a central recess 52.

Fig. 4 shows a sectional view of the fastening device 10 with the frame part 12 locked pivot member 14. On the pivot member 14, the holding plate 41 of the wheelchair wheel is arranged. The first pivot bearing part 38 is from the second Swivel bearing part 39 overlapped. As a result, the pivot member 14 is fixed against movement in the direction of an arrow 54, ie upwards. Furthermore, a movement of the pivoting part 14 in the direction of the arrow 24, ie downwards, prevented by a securing projection 56 of the pivoting part 14, which engages over a part of the frame part 12. Since the pivoting part 14 rests with its side 44 on the frame part 12, the pivoting part 14 is further fixed in the direction of an arrow 58. Finally, movement of the pivoting part 14 in the direction of an arrow 60, ie away from the wheelchair frame, is prevented in that the first pivot bearing part 38 engages behind the second pivot bearing part 39 and the locking element 18 engages behind the rear grip 16. The pivoting part 14 is thereby secured against movement in all directions according to the arrows 24, 54, 58, 60. This also allows a mechanically unloaded contact between the connectors 36a, 36b.

The locking element 18 is provided with a locking element bevel 62, the rear handle 16 with a rear grip bevel 64. The shaft 30 does not have to be actuated thereby for locking the connection between the pivoting part 14 and the frame part 12. For locking the pivoting part 14 with the frame part 12, the pivoting part 14 rather only with its first pivot bearing part 38 in the direction of arrow 54 in the second pivot bearing part 39 of the frame part 12 and then inserted in the direction of an arrow 66 to the frame part 12, ie to the pivot bearing part 38th be pivoted. By the locking element bevel 62 and the rear grip bevel 64, the locking element 18 is displaced in the direction of the arrow 24 against the force of the spring element 32. As soon as the side 44 of the pivoting part 14 rests against the frame part 12, the locking element 18 is displaced in the direction of the arrow 54 by the force of the spring element 32. The locking element 18 then engages behind the rear handle 16 between the pivot member 14 and the frame part 12 is thereby formed a latching connection. The user does not need to take any further measures for fixing the pivoting part 14 on the frame part 12. In addition to the release of the connection between the pivoting part 14th and the frame part 12 thereby also the locking between the pivoting part 14 and the frame part 12 is very simple.

In Fig. 5 the fastening device 10, which comprises the frame part 12 and the fastening part 14 as well as the retaining plate 41 fastened to the pivoting part 14, is shown from the perspective of the wheelchair frame (not shown). The retaining plate 41 has recesses, of which, for reasons of the perspective view, only three recesses 66a, 66b, 66c are provided with a reference numeral. By means of the recesses 66a-c, further parts of the wheelchair wheel (not shown) are fastened to the holding plate 41. The wheelchair wheel preferably has an electric drive. Alternatively, a conventional, standardized wheelchair wheel (not shown) can be attached to the frame part 12. For this purpose, a sleeve 68 is provided on the frame part 12. The sleeve 68 has an inner diameter suitable for receiving a 12 mm or 12.7 mm (1/2 inch) OD wheelchair wheel axle. The frame part 12 is thereby used without a corresponding corresponding pivot member 14. The user can therefore easily switch between an electrically driven wheelchair wheel and a standardized non-motorized wheelchair wheel.

The frame part 12 further has a receiving opening 70 for a tilt protection (not shown). A rod of the tilt protection can be introduced in the direction of an arrow 72 in the receiving opening 70. The receiving opening 70 is located at the by the perspective view of Fig. 5 invisible underside of the frame part 12. The tilt protection can be secured by a locking pin 74 in the frame part 12 after insertion into the receiving opening 70. The locking pin 74 is connected to the frame part 12 via two screw 76 a, 76 b and thereby arranged captive on the frame part 12.

Claims (14)

Fastening device (10) for fastening a, in particular electrically driven, wheelchair wheel on the frame of a wheelchair, wherein the fastening device (10) can be arranged on a wheelchair wheel, a first pivot bearing part (38) exhibiting pivoting part (14), the pivoting part (14) has a locking element ( 18) and the fastening device (10) furthermore comprises a frame part (12) which can be arranged on the frame and has a second pivot bearing part (39) and wherein the pivot part (14) can be detachably locked to the frame part (12), characterized in that the locking element (18) is arranged relative to a pivoting part body (15) movable on the pivot part body (15) and at the frame part (12) locked pivot member (14), the locking element (18) is engaged behind by a rear handle (16) of the frame part (12). Fastening device according to one of the preceding claims, characterized in that a spring element (32) between the locking element (18) and the pivoting part body (15) is arranged. Fastening device according to one of the preceding claims, characterized in that the locking element (18) has a locking element bevel (62) and / or the rear handle (16) has a rear grip bevel (64). Fastening device according to one of the preceding claims, characterized in that the pivoting part (14) has an actuating element (28) acting on the locking element (18). Fastening device according to claim 4, characterized in that on the actuating element (28), in particular centrally, a shaft (30) is arranged or formed. Fastening device according to one of the preceding claims, characterized in that the locking element (18) comprises a pawl. Fastening device according to one of the preceding claims, characterized in that the first pivot bearing part (38) comprises a hinge pin and the second pivot bearing part (39) comprises a projection. Fastening device according to one of the preceding claims, characterized in that the pivoting part (14) has a securing projection (56) which at least partially overlaps the frame part (12) when the pivot part (14) is locked on the frame part (12). Fastening device according to one of the preceding claims, characterized in that corresponding plug connectors (36a, 36b) are provided on the frame part (12) and pivot part (14). Fastening device according to one of the preceding claims, characterized in that the frame part (12) has a sleeve (68) for receiving a wheelchair wheel axle. Fastening device according to one of the preceding claims, characterized in that the frame part (12) has a receiving opening (70) for a tilt protection. Fastening device according to claim 11, characterized in that on the frame part (12) a locking bolt (74) is provided, wherein the anti-tip in the receiving opening (70) through, in particular by at least one Screw (76a, 76b) on the frame part (12) arranged locking bolt (74) is securable. Frame part (12) of a fastening device (10) according to one of claims 1 to 12. Pivoting part (14) of a fastening device (10) according to one of claims 1 to 12.

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