EP3342387B1 - Bed, in particular nursing bed with a safety assembly and assembly for securing a bed occupant against falling out of a bed, in particular a nursing bed. - Google Patents

Description

The present invention relates to an arrangement for securing a bed occupant against falling out of a bed, in particular a care bed, the securing arrangement having at least one telescopic rail guide.

From the documents EP 2 263 632 A1 , EP 1 243 207 A1 , EP 2 052 707 A1 , DE 20 2015 101 436 U1 and DE 20 2016 104 234 U1 fuse arrangements are known. Especially the ones from the document EP 2 052 707 A1 well-known fuse arrangement has achieved a high level of awareness. It has proven itself in everyday use in hospitals and nursing homes. In years since the development of the document EP 2 052 707 A1 known security arrangement, the need for improvements in the security arrangement has repeatedly arisen. Underlying this need for further improvement are the inventions described below and set forth in the claims.

In the backup arrangement according to the document EP 2 052 707 A1 the safety arrangement is pulled out and the safety arrangement is also pushed in in two steps: first the third guide means are pulled out of the second, then the second are pulled out of the first guide means. When the safety arrangement is pushed in, the third guide means are first pushed into the second before the second guide means can then be pushed into the first. Pulling it out and pushing it in in two steps is perceived by some users as inharmonious and technical. Especially in the case of care beds, where there is a high demand for a homely design of the bed, many users want an attractive design not only for the outside of the bed, but also for the function.

In the document DE 20 2015 101 436 U1 a securing arrangement is described which has two synchronizing mechanisms which synchronize a displacement of the first guide means to the second guide means and vice versa and a displacement of the second guide means to the third guide means and vice versa in the first direction and in a direction opposite to the first direction. One mechanism works when the fuse arrangement is pushed in and the other when it is pulled out. When pulling out, the second guide means or parts connected thereto are taken along by a web of material and pulled out. The panel is attached to the first and third guide means. When pushed in, the second guide means is pressed down by means of a rope. With the web of material and the cable, two pulling elements are thus provided, with which either the pulling out or the pushing in is effected. Other elements also only work when pulling out or pushing in.

The object of the invention was to improve the safety arrangement in such a way that elements of the synchronization mechanism can be used for both pulling out and pushing in.

According to the invention, this object is achieved by two variants. The two variants are described in more detail below.

The synchronizing mechanism according to the first variant has at least a first rack, a second rack and pinion gears meshing with the first rack and the second rack. The first rack can on the first guide means and / or the second rack on the third Guide means can be attached directly or indirectly. The toothed wheels of the toothed wheel gear meshing with the toothed racks are preferably rotatably arranged in or on the second guide means. The gear train can have an odd number of gear wheels. The toothed gear can be a spur gear. The two gears meshing with the racks are preferably the first and the last gear of the spur gear. If the spur gear has an odd number of gears, the first and the last gear of the spur gear, which mesh with the racks, have the same sense of rotation. The toothings of the first and last gear running in the toothed racks then preferably move the second guide means, to which the gear wheels are rotatably attached directly or indirectly, in relation to the first guide means in the same direction as they move the third guide means in relation to the second guide means .

The second variant of the synchronization mechanism has a first wheel, a second wheel and a traction element which is guided over the first and the second wheel, so that a rotation of the first wheel is transmitted to the second wheel and vice versa. Preferably, the traction member is looped around the first and second wheels in an eye rather than a figure of eight, so that the rotation of the first and second wheels is in the same direction. In the second variant, the first wheel and the second wheel are preferably rotatably fastened directly or indirectly to the second guide means.

The first wheel may be non-rotatably and coaxially connected to a first gear and the second wheel may be non-rotatably and coaxially connected to a second gear. The second variant of the synchronization mechanism can also have a first toothed rack and a second toothed rack. The first gear can be the first Rack and the second gear can mesh the second rack.

The first toothed rack can be attached directly or indirectly to the first guide means and/or the second toothed rack to the second guide means.

The second variant of the synchronization mechanism can have at least one tensioning means, by which the tension element is tensioned. The first wheel can be a V-wheel, the second wheel can be a V-wheel and the traction element can be a V-belt.

The ones from the document EP 2 052 707 A1 Known safety device has at least one locking mechanism with which the position of the first guide means and the second guide means relative to one another can be determined and/or the position of the second guide means and the third guide means relative to one another can be determined, so that the position of the guide means does not change either under load or due to of gravity can change. However, the safety device is constructed in such a way that when the safety device is fully retracted, i.e. when the third guide means is pushed into the second guide means and the second guide means is pushed into the first guide means, neither the second guide means to the first guide means, nor the third guide means to the second guide means is fixed by a locking mechanism. Since both the second guide means and the third guide means rest against a stop in the lowest position, adjustment due to gravity or when subjected to downward pressure is not possible.

It has now been shown, however, that when the safety device is completely pushed in, in certain situations it can happen that a user of the bed pulls on an upper end of the safety device and thus at least indirectly on the third guide means and/or the second guide means to gain support . As a result, the third and/or second guide means can be set in motion, as a result of which the user who is looking for support cannot find support and has to obtain support elsewhere. The risk of falling is not excluded. In order to prevent the securing arrangement from being unintentionally pulled out, means such as those from the documents could be used DE 20 2015 105 365 U1 and DE 20 2015 105 367 U1 are known. However, the solutions disclosed there are complex and therefore not convenient.

The invention was therefore based on the second object of improving a safety arrangement according to the invention in such a way that the safety arrangement cannot be unintentionally pulled out.

This second object is achieved according to the invention in that the first guide means and the second guide means are an arrangement for securing a bed occupant against falling out of a bed, in particular a care bed, in a maximum retracted position of the second guide means and the second guide means and third guide means in one maximum retracted position of the third guide means can be determined with the locking mechanism. Due to the fact that the locking mechanism can be used to secure the safety arrangement against unintentional extraction even in the pushed-in position, unintentional extraction when subjected to an upward load is no longer possible with a safety arrangement according to the invention.

The locking mechanism of a security arrangement according to the invention can have at least one bolt and at least one counterpart to the bolt, which serve to fix the second and/or third guide means of the retracted security arrangement.

In the maximum retracted position of the third guide, the bolt of the locking mechanism can interact with one of the counterparts of the locking mechanism to lock the first guide and the second guide to each other and/or the position of the second guide and the third guide to each other.

The securing arrangement can have an override device with which the locking of the first guide means and the second guide means to one another in the maximum retracted position of the second guide means and/or the locking of the second guide means and the third guide means to one another in the maximum retracted position of the third guide means can be released can. This cancellation means is advantageously coupled to the locking mechanism.

In the German utility model applications DE 20 2015 105 365 and DE 20 2015 105 367 solutions are known as to how a separate locking device with a lock or a lock integrated into a security arrangement can be used to prevent the second guide from being pulled out of the first guide and/or the third guide from the second guide. This may be necessary to prevent the bed occupant from being taken out of a bed by removing all of the securing arrangements from a bed Authorized is prevented from leaving the bed and is therefore fixed.

That in the registration DE 20 2015 105 367 The lock disclosed and integrated into the security arrangement prevents parts of the security arrangement from being pulled apart in that a bolt is pushed through the guide means, which bolt prevents the guide means from being pulled out. This is only possible in one position of the guide means in relation to one another, namely in the maximum retracted position of the third and second guide means. The lock is also located on a side of the bed that is easily visible. This does not contribute to a homely and attractive appearance of the bed.

The invention was therefore based on the third object of improving a security arrangement according to the invention in such a way that the security arrangement can be prevented from being pulled out with simple means, these means not being in the directly visible area if possible.

• die Sicherungsanordnung ein Blockiermittel aufweist, mit dem eine Betätigung des Aufhebemittels durch einen Benutzer blockierbar ist oder
• die Sicherungsanordnung ein Entkoppelungsmittel aufweist, mit welchem eine Betätigung des Aufhebemittels von dem Feststellmechanismus entkoppelbar ist.

This object is achieved according to the invention in that

• the securing arrangement has a blocking means with which actuation of the canceling means can be blocked by a user, or
• the securing arrangement has a decoupling means with which actuation of the releasing means can be decoupled from the locking mechanism.

Blocking or decoupling, which prevents the canceling means from acting on the locking mechanism, can effectively prevent the position of the guide means from changing relative to one another in a simple manner. The blocking agent or the decoupling means are preferably arranged in the immediate vicinity of the canceling means. As a result, the blocking means or the decoupling means can be provided in particular in an area in which a user grips the lifting means in order to actuate it.

It is possible for the lifting means to be activated by means of the blocking means in any position of the first guide means and the second guide means relative to one another and/or of the second guide means and the third guide means relative to one another, in which at least one latch of the locking mechanism and at least one counterpart to the latch for fixing interact can be blocked. In contrast to the solutions described in the earlier applications, it is thus possible to block the extension or retraction of the safety device in any position of the guide means relative to one another and not just in the maximum retracted position.

The blocking means of a safety arrangement according to the invention can have a blocking element which can be moved between two end positions relative to the lifting means, the lifting means being freely movable in the first end position and the blocking means preventing movement of the lifting means in the second end position. The blocking element can be a bolt which is preferably mounted on the lifting means or else on the first guide means, on the second guide means or on the third guide means so as to be displaceable in its longitudinal direction. To move from the first end position to the second end position, the bolt can first be displaced linearly in its longitudinal direction into an intermediate position and then be displaced from the intermediate position to the second end position by rotation about its longitudinal axis.

The blocking means or the decoupling means can have a lock and a key. The blocking means can be set up in such a way that the blocking and/or releasing of the releasing means can only be actuated by means of a locking process carried out by the key, or the decoupling means can be set up in such a way that the decoupling and/or coupling of the releasing means from the locking mechanism can only be done by means of a made by the key closing process can be actuated.

In the case of the securing arrangements with telescopic rail guides known from the prior art, the locking mechanisms are designed in such a way that they have a bolt and at least one counterpart to the bolt, which are used for fixing. The bolt is then arranged, for example, on the third and/or second guide means so as to be movable transversely to the first direction and can be pushed into the counterpart by a movement transversely to the first direction. Movement between the guide means is then prevented by the form fit between the bolt and the counterpart. A counterpart to the bolt is one of the guide means, in which recesses are provided, in which the bolt engages. These recesses are usually designed as through-holes, which means that the recesses can be seen at least in an extended position of the safety arrangement and that, in the extended position, they can possibly also receive protection, which makes it difficult to completely clean and disinfect the bed.

The invention was therefore based on the fourth object of improving a safety arrangement according to the invention in such a way that the outside of the bed is as free as possible of recesses and others Structures is that receive a latch of the locking mechanism.

This object is achieved according to the invention in that the locking mechanism has at least one rod, the rod being arranged in a channel formed by the first guide means in the first guide means and/or in a channel formed by the second guide means in the second guide means and on or in the or the Rods are provided as counterparts to the bolt.

The rod or rods can have recesses or projections which form the counterparts of the latch. The rod can be arranged in the at least one second guide means. The rod can form a monolith with a holder for the first wheel, a second wheel or gears of the gear train.

The first guide means the from the document EP 2 052 707 A1 known fuse arrangement has a cross-section in part C-shaped profile and thereby forms a channel. The second guide means is arranged to be linearly displaceable in the channel formed by the C-shaped profile. The C-shaped channel makes it possible for two second guide means, which are connected to one another by one or more traverses, to be slidably arranged in the first guide means. The traverses reach through the slots of the first guide means, at least when the securing arrangement is fully pushed in.

The slot formed by the C-shaped profile can be bent open, in particular due to the inappropriate application of force when using the securing arrangement. The guidance of the second guide means in the first guide means can suffer from this: The second Guide means can then no longer be guided well by the first guide means, with the result that the telescopic rail guide can rattle or tilt.

The invention was therefore based on the fifth object of improving a securing arrangement according to the invention in such a way that bending up of the first guide means is prevented.

• an einem Schlitz des C-förmigen Profils des ersten Führungsmittels Ansätze vorgesehen sind, die in den durch das C-fömige Profil gebildeten Kanal ragen und
• das zweite Führungsmittel, welches in dem Kanal des ersten Führungsmittels verschiebbar angeordnet ist, auf einer Außenseite Rillen hat, in welche die Ansätze mittelbar oder unmittelbar eingreifen.

This object is achieved according to the invention in that

• in a slot of the C-shaped profile of the first guide means, projections are provided which project into the channel formed by the C-shaped profile and
• the second guide means, which is slidably arranged in the channel of the first guide means, has grooves on an outside, in which the lugs engage directly or indirectly.

A simple and uncomplicated operation of the safety arrangement requires that the telescopic rail guide can be pulled out and pushed in without tilting or the like. This requires that the guide means are precisely matched to one another. For this purpose, special attention must be paid when manufacturing the guide means that the intended dimensions are observed.

In addition, the invention was based on the sixth object of improving a safety arrangement according to the invention so that the interaction of the guide means works even better, especially if a guide means is not manufactured quite as precisely as is normally the case.

This object is achieved according to the invention in that the telescopic rail guide has at least one sliding bush which is arranged between the first guide means and the second guide means or between the second guide means and the third guide means.

The sliding bush may have a tab arranged between a wall of the first guide means and a wall of the second guide means or a wall of the second guide means and a wall of the third guide means. A threaded hole can then be provided in the wall of the first guide means or of the second guide means, into which a threaded pin or another screw is screwed, the tip of which rests against the tab. By choosing the screw-in depth of the screw, in particular the threaded pin, it can be determined whether and how far the tab is bent inwards or outwards. This makes it possible to reduce or increase the free inner cross-section of the sliding bush. The inner free cross-section of the sliding bush can thus be adapted to the dimensions of the part of the telescopic rail guide guided by the sliding bush, namely the second guide means or the third guide means.

The ones from the document EP 2 052 707 A1 known fuse arrangement is designed so that it can be covered from an outside with a side panel. For this purpose, through holes are provided in the side walls of the first guide means, which make it possible to screw a side panel to the first guide means. One of the through-holes, namely one on the inside of the securing arrangement, is only used to insert the screw for fastening the side panel and a screwdriver for screwing this screw through the inner Guide side wall and the interior of the first guide means. This through hole remains free after attachment of the side cheek to the securing assembly, allowing debris to enter the interior of the first guide means, which is undesirable.

The invention was therefore based on the seventh object of improving a safety arrangement according to the invention such that a side panel can be attached to the safety arrangement without openings being necessary in one of the guide means through which dirt can penetrate into the interior of the guide means.

According to the invention, this object is achieved in that the first guide means has at least one lug, to which a side panel is attached or can be attached.

For fastening the side panel, this tab can have a recess through which a screw can be guided, with which the side panel can be screwed to the first guide means. If the side cheek is fastened to the lug of the first guide means, it is not necessary to provide holes in the side walls of the guide means through which dirt can penetrate into the interior of the guide means.

Bed exit alarm systems are used in many care facilities. A bed exit alarm system can be used to determine that a bed occupant is leaving his bed. A care worker can then rush to the aid of the occupant if the occupant is known to be in need of assistance based on the bed exit alarm triggered by leaving the bed. However, a bed exit alarm can also switch on lights in the room in which the bed is located is located, whereby this space is illuminated in such a way that the bed occupant can move safely in this space.

Known bed exit alarm systems often rely on weight monitoring either directly in bed or in a mat placed on the floor in front of the bed. However, weight monitoring can always lead to false alarms if the weight changes suddenly due to other reasons. It is therefore desirable if the result of the weight monitoring can be confirmed by a second bed exit monitoring system or if the weight-based bed exit monitoring system can be replaced by a system that is independent of weight fluctuations.

The invention was therefore based on the eighth object of improving a security arrangement according to the invention in such a way that bed exit monitoring is possible with the security arrangement.

According to the invention, this object is achieved in that the securing arrangement has a sensor with which the position of the first guide means and the second guide means relative to one another can be detected. With the solution according to the invention it can be monitored whether a safety arrangement is or will be fully or partially inserted. In the case of a bed occupant who is secured against falling out of the bed by the safety device, a bed exit alarm can then be triggered by pushing in the safety arrangement, which prompts a nursing staff member to look after the bed occupant.

A safety arrangement according to the invention described above can have one or more eccentric levers have, with the help of which the securing arrangement can be attached to a support or a frame of a bed.

• die wenigstens zwei Teleskopschienenführungen aufweist, nämlich eine erste und eine zweite Teleskopschienenführung,
• wobei die erste und die zweite Teleskopschienenführung parallel und mit einem Abstand zueinander angeordnet sind,
• wobei das zweite Führungsmittel der ersten Teleskopschienenführung und das zweite Führungsmittel der zweiten Teleskopschienenführung über wenigstens eine Traverse miteinander verbunden sind,
• wobei die Sicherungsanordnung ein Bewegungsübertragungsmittel aufweist, das eine Welle, die sich in oder entlang der Traverse von einem zweiten Führungsmittel zum anderen erstreckt und die bei einer Bewegung zwischen dem ersten Führungsmittel und dem zweiten Führungsmittel einer der beiden Teleskopschienenführungen zum Übertragen der Bewegung auf die Führungsmittel die andere der beiden Teleskopschienenführungen dreht.

From the document EP 2 263 632 is a safety arrangement known

• which has at least two telescopic rail guides, namely a first and a second telescopic rail guide,
• wherein the first and the second telescopic rail guide are arranged parallel and at a distance from one another,
• wherein the second guide means of the first telescopic rail guide and the second guide means of the second telescopic rail guide are connected to one another via at least one traverse,
• wherein the securing arrangement has a movement transmission means, which comprises a shaft which extends in or along the traverse from one second guide means to the other and which, when there is movement between the first guide means and the second guide means, of one of the two telescopic rail guides for transmitting the movement to the guide means other of the two telescopic rail guides rotates.

According to the invention, it is possible for such a safety arrangement to be designed according to the invention as described above.

According to the invention, one of the aforementioned safety arrangements according to the invention can have a drive, in particular a motor, which drives the shaft directly or indirectly. By means of this drive, the fuse arrangement without special Force exerted by an operator, in particular a bed occupant, are pulled out or pushed in. This is particularly beneficial for people with physical disabilities.

A safety arrangement according to the invention can be provided on a bed, in particular on a care or hospital bed. The bed can have at least one safety arrangement on a first side of the bed, on a second side of the bed, at the head end and/or at the foot end. It is possible for the bed to have one safety arrangement or two safety arrangements each on the first and/or the second side of the bed. If two securing arrangements are provided on one side of the bed, it is possible for one of the two securing arrangements to be provided approximately on one half of the bed facing the head end and the other of the two securing arrangements approximately on one half of the bed facing the foot end. However, it is also possible for a safety arrangement according to the invention to extend over more than half of a side of the bed, for example around 2/3 or 3/4 of a side of the bed. If only one safety arrangement is provided per side of the bed, the safety arrangement is preferably arranged in a part of the bed facing the head end. In principle, the safety arrangement can also extend over an entire side of the bed.

Fig. 1

eine Ansicht einer ersten erfindungsgemäßen Sicherungsanordnung in einer Ansicht von einer Außenseite im maximal eingeschobenen Zustand,

Fig. 2

eine Ansicht der ersten Sicherungsanordnung in einer Ansicht von der Außenseite im vollständig ausgezogenen Zustand,

Fig. 2a

einen Schnitt durch einen Teil der Sicherungsanordnung gemäß der Linie IIa-IIa in Fig. 2,

Fig. 3

eine Ansicht der ersten Sicherungsanordnung zum Teil geschnitten und zum Teil in der Ansicht von der Außenseite im ausgezogenen Zustand,

Fig 3.1

eine Variante der ersten Sicherungsanordnung in einer Ansicht entsprechend Fig. 3,

Fig. 4

eine Ansicht der ersten Sicherungsanordnung in einer Ansicht von der Außenseite im zum Teil ausgezogenen Zustand,

Fig. 5

einen Schnitt durch die erste Sicherungsanordnung gemäß der Linie IV-IV in Fig. 4,

Fig. 6

einen Schnitt durch die erste Sicherungsanordnung gemäß der Linie VI-VI in Fig. 6a,

Fig. 6a

eine Ansicht entsprechend Fig. 1 mit der gekennzeichneten Linie VI-VI,

Fig. 7

einen Schnitt durch die erste Sicherungsanordnung gemäß der Linie VII-VII in Fig. 7a,

Fig. 7a

eine Ansicht entsprechend Fig. 1 mit der gekennzeichneten Linie VII-VII,

Fig. 8

eine Ansicht zum Teil geschnitten,

Fig. 8a

eine Einzelheit aus Fig. 8 in vergrößerter Darstellung,

Fig. 9

einen Schnitt durch die erste Sicherungsanordnung gemäß der Linie IX-IX in Fig. 9a,

Fig. 9a

eine Ansicht entsprechend Fig. 4 mit der gekennzeichneten Linie IX-IX,

Fig. 10

eine Einzelheit aus Fig. 10a in vergrößerter Darstellung,

Fig. 10a

einen Schnitt durch die erste Sicherungsanordnung gemäß der Linie X-X in Fig. 10b,

Fig. 10b

eine Ansicht entsprechend Fig. 4 mit der gekennzeichneten Linie X-X,

Fig. 11

eine Ansicht der an einem Träger eines Bettes montierten ersten Sicherungsanordnung in einer Ansicht von der Innenseite,

Fig. 11a

einen Schnitt durch die Anordnung gemäß der Linie XIa-XIa in der Fig. 11,

Fig. 11b

eine Einzelheit aus Fig. 11a in vergrößerter Darstellung,

Fig. 11c

eine weitere Einzelheit aus Fig. 11a in vergrößerter Darstellung,

Fig. 12

eine Ansicht einer zweiten Sicherungsanordnung in einer Ansicht von der Außenseite im maximal eingeschobenen Zustand und zum Teil geschnitten,

Fig. 13

einen Schnitt durch die zweite Sicherungsanordnung gemäß der Linie XIII-XIII in Fig. 12,

Fig. 14

eine Ansicht einer zweiten Sicherungsanordnung in einer Ansicht von der Außenseite im zum Teil ausgezogenen Zustand,

Fig. 15

einen Schnitt durch die zweite Sicherungsanordnung gemäß der Linie XV-XV in Fig. 14,

Fig. 16

eine Einzelheit aus Fig. 12 in vergrößerter Darstellung,

Fig. 17

eine Einzelheit der zweiten Sicherungsanordnung in vergrößerter perspektivischer Darstellung,

Fig. 18

eine Ansicht der zweiten Sicherungsanordnung von unten,

Fig. 19

einen Schnitt durch die zweite Sicherungsanordnung gemäß der Linie XIX-XIX in Fig. 18

Fig. 20

eine erste perspektivische Ansicht einer Kassette aus zwei Trägern und Zahnrädern sowie einer Stange,

Fig. 21

eine zweite perspektivische Ansicht der Kassette aus Fig. 20 und

Fig. 22

eine perspektivische Ansicht eines Endstücks eines dritten Führungsmittels mit einer Ausnehmung als Gegenstück zu einem Riegel.

Further features and advantages of the present invention become clear from the following description of a preferred exemplary embodiment with reference to the attached figures. Show in it:

1

a view of a first safety arrangement according to the invention in a view from an outside in the maximum inserted state,

2

a view of the first securing arrangement in a view from the outside in the fully extended state,

Figure 2a

a section through part of the fuse arrangement according to line IIa-IIa in 2 ,

3

a view of the first security arrangement partly in section and partly in view from the outside in the extended state,

Figure 3.1

corresponding to a variant of the first securing arrangement in a view 3 ,

4

a view of the first securing arrangement in a view from the outside in the partially extended state,

figure 5

a section through the first security arrangement according to the line IV-IV in 4 ,

6

a section through the first security arrangement according to the line VI-VI in Figure 6a ,

Figure 6a

a view accordingly 1 with the marked line VI-VI,

7

a section through the first security arrangement according to the line VII-VII in Figure 7a ,

Figure 7a

a view accordingly 1 with the marked line VII-VII,

8

a view partially cut,

Figure 8a

a detail 8 in enlarged view,

9

a section through the first securing arrangement according to the line IX-IX in Figure 9a ,

Figure 9a

a view accordingly 4 with the marked line IX-IX,

10

a detail Figure 10a in enlarged view,

Figure 10a

a section through the first securing arrangement according to the line XX in Figure 10b ,

Figure 10b

a view accordingly 4 with the marked line XX,

11

a view of the first securing arrangement mounted on a support of a bed in a view from the inside,

Figure 11a

a section through the arrangement along the line XIa-XIa in the 11 ,

Figure 11b

a detail Figure 11a in enlarged view,

11c

one more detail Figure 11a in enlarged view,

12

a view of a second securing arrangement in a view from the outside in the maximum inserted state and partially sectioned,

13

a section through the second security arrangement according to the line XIII-XIII in 12 ,

14

a view of a second security arrangement in a view from the outside in the partially extended state,

15

a section through the second fuse arrangement according to the line XV-XV in 14 ,

16

a detail 12 in enlarged view,

17

a detail of the second securing arrangement in an enlarged perspective view,

18

a view of the second securing arrangement from below,

19

a section through the second security arrangement according to the line XIX-XIX in 18

20

a first perspective view of a cassette of two carriers and gears and a rod,

21

a second perspective view of the cartridge 20 and

22

a perspective view of an end piece of a third guide means with a recess as a counterpart to a bolt.

The in the Figures 1 to 11 The first securing arrangement shown has two telescopic rail guides, each with a first guide means 1 , a second guide means 2 and a third guide means 3 .

The first guide means 1 are aligned parallel to one another and are at a distance from one another.

The first guide means 1 have slots on the sides facing one another. This results in the first guide means 1 having a profile which is essentially C-shaped in cross section. In principle, however, it is also possible for the first guide means to have a closed hollow profile. In both cases the first guiding means form a channel.

A first slide bushing 12 is provided at the upper end of the first guide means 1 when in the position of use. The first slide bushing 12 is essentially seated on the upper end of the first guide means 1 . Tabs 121 of the sliding bush 12 are inserted into the first guide means 1. About screws 17, which are screwed through the first bushing 12 in screw channels of the first guide means 1, the first bushing 12 with the first Guide means 1 connected. A threaded hole is provided in a side wall of the guide means 1 in the area of a tab. A threaded pin 13 is inserted into this threaded hole. By choosing the screw-in depth of the threaded pin 13, the tab can be pressed more or less inwards. This makes it possible to adjust the guidance of the second guide means 2 by the sliding bush 12 .

Due to the C-shaped profile of the first guide means 1, the first guide means has a web and two legs. The first guide means 1 has a projection 101 on each end of each leg facing away from the web. These lugs have a generally L-shaped profile in cross section. They connect to the free ends of the legs and are each angled from the leg to which they connect first to the opposite leg then inwards into the interior of the channel formed by the first guide means 1 .

A tab 11 is provided on each of the two first guide means 1 and is attached to the outer side wall of the first guide means 1 on the side facing the respective other first guide means 1 . These brackets 11 each have two holes 111 through which screws can be guided in order to be able to screw a side panel to the first guide means.

A second guide means 2 is displaceably arranged in each channel of the first guide means 1 . Securing arrangements according to the invention are also possible, however, in which the second guide means 2 is arranged in a displaceable manner on the first guide means 1 . The first guide means then has to be neither an im Cross-section C-shaped, still be a hollow profile. Other profile shapes are also possible.

On an outer side of each second guide means 2, two parallel grooves 201 are provided in the longitudinal direction. The free ends of the projections of the first guide means 1, which are L-shaped in cross section, engage at least indirectly in these grooves. This prevents the first guide means 1, which has a C-shaped cross section, from being bent open by loads during use.

A sliding bush, namely a second sliding bush 30, is also provided at the upper end of the second guide means 2 in the position of use. The sliding bush 30 is essentially seated on the upper end of the second guide means 2 . Tabs 301 of the slide bushing 30 are inserted into the second guide means 2 . A threaded hole is provided in a side wall of the second guide means 2 in the area of a tab 301 . A threaded pin 31 is inserted into this threaded hole. By choosing the screw-in depth of the threaded pin 31, the tab can be pressed more or less inwards. This makes it possible to adjust the guidance of the third guide means 3 by the sliding bush 30 .

In the first securing arrangement, the second guide means 2 are connected to one another via a first traverse 7 and a second traverse 8 . The first traverse and the second traverse are preferably arranged parallel and at a distance from one another. Preferably, they are attached to an upper and a lower end, respectively, of the second guide means. While the second traverse 8 slides through the slots of the first guide means 1 are guided, this is the case with the first traverse 7 at least in an inserted state of the securing arrangement.

The second guide means 2, the first traverse 7 and the second traverse 8 form a unit which can be displaced relative to the first guide means 1.

The second guide means 2 can be closed hollow profiles, which form a channel, or profiles with a different shape in cross section.

A third guide means 3 is displaceably arranged in each channel of the second guide means 2 . Securing arrangements according to the invention are also possible, however, in which the third guide means 3 is arranged in a displaceable manner on the second guide means.

The ends of the third guide means 3 that are not guided in the second guide means 2 are connected to one another via a third traverse 9 and/or a handrail 10 .

The third guide means 3 together with the third traverse 9 and the handrail 10 form a unit which can be displaced relative to the unit made up of the second guide means 2, the first traverse 7 and the second traverse 8.

The outer shape of the first securing arrangement is essentially determined by the first guide means 1, the second guide means 2, the third guide means 3, the first crossbar 7, the second crossbar 8, the third crossbar 9 and the handrail 10.

The first securing arrangement has a synchronization mechanism for each telescopic rail guide, which synchronizes a displacement of the first guide means to the second guide means and vice versa a displacement of the second guide means to the third guide means and vice versa in the first direction and in a direction opposite to the first direction.

Each of these synchronization mechanisms has in the in the 3 Variant shown a gear train 14 each. The toothed gears 14 are spur gears. Each gear train 14 is arranged between a first carrier 151 and a second carrier 19 . For this purpose, on each first carrier 151 there are pins on which gears 141, 142 are arranged, or holes in which axes of gears 143, 144, 145, 146, 147 are arranged. Holes for the axles of the gears and for the ends of the pins are provided on the second support. The first carrier 151 and the second carrier are arranged at a distance from one another which is dimensioned such that the gears 141 to 147 are rotatably mounted between the two carriers 151, 19. The first and the second carrier 151, 19 together form a pair of carriers. The carrier pair 151, 19 could also be referred to as a cassette which supports the gears 141-147. The cassette is in the 20 and 21 shown.

Each cassette 151, 19, 141 to 147 is located in one of the second guide means. The gears 141 to 147 are arranged in such a way that their axes or the journals on which the gears are arranged are perpendicular to a plane passing through the second guide means 2 and the first and the first and the second traverse 7, 8 is stretched. There is between the carriers 151, 19 and the gear wheels 141 to 147 mounted between them and the inside of the side walls of the second guide means a gap is provided into which the third guide means can be inserted.

The first of these gears 141 of each gear train 14 and a second of these gears 142 have a larger diameter than the other gears 143, 144, 145, 146, 147, which are arranged between the first gear 141 and the second gear 142. However, it is not mandatory that the first gear wheel and the second gear wheel 141, 142 have a larger diameter. With the exception of the first gear 141 and the second gear 142, the gears 143, 144, 145, 146, 147 each mesh with two adjacent gears 143, 144, 145, 146, 147. The first and the second gear 141, 142 each mesh with one gear . The transmission 14 is designed so that the first and second gears always rotate at the same speed and in the same direction.

In addition to the gear train 14 , the synchronization mechanism has a first rack 16 and a second rack 17 . The first rack 16 is provided in the first guide means 1 and fixedly connected thereto, and the second rack 17 is provided in the third guide means 3 and fixedly connected thereto. The first toothed rack 16 and the second toothed rack 17 are arranged on different sides in relation to the axes of rotation of the gearwheels 141 to 147 . When the gears 141 to 147 are rotated, the first and second gears 141, 142 rotate in the same direction and at the same speed, but they roll on the first rack 16 and the second rack 17 in different directions.

When the first gear 141 rolls up on the first rack 16, the second gear 142 rolls up on the second rack 17 downward. The first rack 16 and the second rack 17 and the first guide means 1 connected thereto and the third guide means 3 then move apart. The telescoping guides and fuse assembly are then deployed.

When the first gear 141 rolls down on the first rack 16, the second gear 142 rolls up on the second rack 17. The first toothed rack 16 and the second toothed rack 17 and the first guide means 1 connected thereto and the third guide means 3 then move towards one another. The telescoping guides and fuse assembly are then retracted.

At the in the Figure 3.1 In the variant shown, the synchronization mechanism is achieved by means of two wheels 41, 42 coaxial with the first gearwheels and a closed belt 43 placed around them, which is held taut by a tensioning mechanism 44.

A movement of the guide means 1, 2, 3 and thus an extension or insertion of the telescopic rail guide and the safety arrangement can be prevented via a locking mechanism. For this purpose, the locking mechanism comprises a rod 152 which, in the first securing arrangement, forms a monolith together with the first carrier 151 for the gear wheels 141 to 146 of the gear mechanism 14 . So that the rod 152 is also part of the cassette that is in the figures 21 , 22 is shown. However, the rod 152 and the first carrier 151 could also be separate from one another.

Like the first carrier 151 , the rod 152 is arranged in the second guide means 2 . In contrast to the carriers 151, 19 and the gear wheels 141 to 146 mounted between them, the rod is arranged in the second guide means 2 in such a way that the rod 152 lies outside of the third guide means 3 when the third guide means 3 is inserted into the second guide means 2, while the carriers 151, 19 and the gears 141 to 146 dip into the third guide means when the third guide means is pushed in. The rod 152 is then arranged between the second guide means 2 and the third guide means 3 .

The rod 152 has a plurality of recesses 1521 lying on a line in the direction of extension of the second guide means 2 (see in particular 3 and figure 5 ). In addition to the rod 152, the locking mechanism includes a bolt 18. This bolt 18 is mounted on the lower end of the third guide means 3 in the direction transverse to the direction of displacement of the third guide means 3 relative to the second guide means 2. The bearing for the bolt is provided at an end piece 20 which is provided at the lower end of the third guide means 3 . The tail 20 is in the 22 shown. The camp is in the 22 denoted by reference numeral 201.

If the bar 18 mounted on the lower end of the third guide means 3 engages in a recess in the rod 151 fastened to the second guide means 2, the third and the second guide means 3, 2 cannot be displaced relative to one another. The third and the second guide means 2, 3 are then fixed to each other. Since the first and the second guide means 1, 2 can only be moved synchronously with a shift of the second to the third guide means 2, 3 via the synchronization mechanism, are also the first and the second guide means 1, 2 fixed to each other.

Since the rod 151 has a plurality of recesses into which the bolt 18 can engage, it is possible to fix the guide means 1, 2, 3 in different positions relative to one another.

The locking can only be canceled by the bolt 18 being pulled out of the recess 1521 in which it engages.

The bolt 18 can be pulled out of one of the recesses 1521 in the rod 152 by means of a lifting means 21, so that the guide means 1, 2, 3 can be displaced relative to one another. For this purpose, the bolt has a recess through which a slide 211 of the lifting means 21 passes. The slide 211 is at an angle to the direction of displacement of the guide means 1, 2, 3 and, when the slide moves in the direction of displacement of the guide means, acts as an inclined plane on the bolt 18, which is thereby displaced and, in particular, lifted out of a recess 1511. The slider is located at a lower end of a rod 212 which extends the length of the third guide means. A handle 213 is provided at the upper end of the rod. This handle 213 has a gripping surface on which a user can grip in order to pull the lifting means 21 against the pressure of a spring 22 upwards. The spring 22 is supported on the one hand on the rod 212 and on the other hand on the upper part of the third guide means 3 , namely on an underside of the third traverse 9 .

The actuation of the cancellation means 21 can be prevented by means of a blocking means 23 . This can prevent the guide means 1, 2, 3 from being displaced in relation to one another become. This prevents the securing arrangement from being pulled out or pushed in. The blocking means 23 has a bolt 231 as a blocking element, which is mounted on the handle 213 so that it can be displaced in its longitudinal direction. For this purpose, the handle 213 has a channel as a guide. The bolt 231 has a transverse bore in which a pin 232 is inserted. The pin 232 protrudes beyond the bolt 231 laterally. The channel in the handle has a first groove in which the protruding end of the pin 232 is guided when the bolt 231 is displaced. A spring 24 is arranged between the bolt and the underside of the third traverse 9 and presses the bolt into a lower, first end position. The bolt can be displaced against the pressure of the spring 24 until the bolt 231 strikes the underside of the third traverse 9 . The bolt 231 can then be turned so that the overhanging end of the pin 232 merges into a second groove in the handle 213 extending at a right angle to the first groove. If the protruding end of the pin has come into the second groove due to the rotation of the pin, the pin 231 can no longer be moved in its longitudinal direction. If it is rotated in the second groove up to a stop, the bolt 231 has reached a second end position. From this second end position, the bolt 231 cannot be moved into the first end position solely by the pressure of the spring 24 . To do this, it is necessary to rotate the bolt about its longitudinal axis so that the protruding end of the pin 232 comes into the area in which the first groove and the second groove are connected to one another.

The bolt 231 has a wrench flat designed to be turned by a wrench 233 of the locking means. A torque can be transmitted to the bolt 231 by means of the key 233 in order to rotate the bolt 231 out of the second or into the second end position in order to release or block the lifting means.

A sensor 24 is provided at a lower end of the first guide means, which can determine the position of the second guide means 2 relative to the first guide means by means of a measuring method that is not described in detail. The sensor 24 is connected to an evaluation unit (not shown) via a cable 241 which is routed through a cable gland 242 .

The securing arrangement according to the invention can in particular be attached to a longitudinal beam of a bed. For this purpose, the securing arrangement has a c-shaped bracket 25 which is fastened to the first guide means 1 with screws. For this purpose, the console is fastened to the first guide means 1 with a web 251, while legs 252 of the console embrace the longitudinal beam of the bed. Aligned bores are provided at the free ends of the legs 252, through which a screw 26, which is secured by a nut 27, is guided. An eccentric lever 28 is arranged on the screw 26 and between the legs 252 . By rotating the eccentric lever, play between the screw 26 and the side member can be reduced to zero.

In a fuse arrangement according to the invention, as in the second fuse arrangement according to Figures 12 to 19 shown, the movement of the guide means 1, 2, 3 of one of the two telescopic rail guides can be transmitted by a movement transmission means 29 to the guide means 1, 2, 3 of the other of the two telescopic rail guides. With the exception of the movement transmission means 29, the second securing arrangement corresponds to the first securing arrangement. The movement transmission means 29 are additionally provided.

The movement transmission means 29 comprise a third and a fourth toothed rack 291, 292. One of these toothed racks is fastened on the inside of one of the tabs 11 of the first guide means 1. Each of the racks 291,292 is meshed with a gear 293,294. These gears have the same diameter and the same toothing, as do the third and fourth racks 291, 292 have the same toothing. The two gears are connected to each other via a shaft 295, so that the rotation of one gear 293 is transmitted to the other gear 294 and vice versa. The movement transmission means 29 transmits a pull-out movement or push-in movement from one telescopic rail guide to the other telescopic rail guide. As a result, the two telescopic rail guides are always synchronized, which prevents the guide means 1, 2, 3 from tilting if the force for pushing in or pulling out the safety arrangement is only applied on one side of the safety arrangement.

The shaft 295 or one of the gears 293, 294 can be coupled to a motor (not shown). With such a motor, the securing arrangement can be extended and retracted by a motor.

Claims (14)

1. Assembly for securing a bed occupant against falling out of a bed, in particular a nursing bed,

   - wherein the securing assembly comprises at least one telescopic rail guide having a first guide means (1), a second guide means (2) and a third guide means (3), and

   - wherein the first guide means (1) and the second guide means (2) are linearly displaceable relative to each other in a first direction, and the second guide means (2) and the third guide means (3) are also linearly displaceable relative to each other in the first direction,

   - wherein the securing assembly has at least one synchronising mechanism which synchronises a displacement of the first guide means (1) relative to the second guide means (2) and vice versa and a displacement of the second guide means (2) relative to the third guide means (3) and vice versa in the first direction and in a direction opposite to the first direction,
   characterised in that
   the synchronising mechanism

   - has at least a first rack (16), a second rack (17) and a gear drive (14) which meshes the first rack (16) and the second rack (17), or

   - has a first wheel (41), a second wheel (42) and a traction element (43) which is guided over the first (41) and the second wheel (42).
2. Securing assembly according to claim 1, characterised in that

   - the securing assembly has at least one locking mechanism by means of which the position of the first guide means (1) and the second guide means (2) relative to each other can be locked and/or the position of the second guide means (2) and the third guide means (3) relative to each other can be locked, and

   - the first guide means (1) and the second guide means (2) are lockable by means of the locking mechanism when the second guide means (2) is in a maximally retracted position and the second guide means (2) and the third guide means (3) are lockable by means of the locking mechanism when the third guide means (3) is in a maximally retracted position.
3. Securing assembly according to the preceding claim, characterised in that the locking mechanism has at least one latch (18) and at least one counterpart (1521) to the latch which serves for locking.
4. Securing assembly according to any one of claims 1 to 3, characterised in that

   - the securing assembly has at least one locking mechanism by means of which the position of the first guide means (1) and the second guide means (2) relative to each other can be locked and/or the position of the second guide means (2) and the third guide means (3) relative to each other can be locked,

   - the securing assembly has a releasing means (21) with which the locking of the first guide means (1) and the second guide means (2) relative to each other and/or the locking of the second guide means (2) and the third guide means (3) relative to each other can be released, and which is coupled to the locking mechanism, and

   - the securing assembly has a blocking means (23) with which actuation of the releasing means (21) by a user can be blocked, or the securing assembly has a decoupling means with which actuation of the releasing means can be decoupled from the locking mechanism.
5. Securing assembly according to the preceding claim, characterised in that the releasing means (21) can be blocked by means of the blocking means (23) when the first guide means (1) and the second guide means (2) are in any position relative to each other and/or when the second guide means (2) and the third guide means (3) are in any position relative to each other in which at least one latch (18) of the locking mechanism and at least one counterpart (1521) to the latch (18) cooperate for locking.
6. Securing assembly according to any one of claims 1 to 5, characterised in that

   - the first guide means, the second guide means (2) and/or the third guide means (3) form a channel,

   - the securing assembly has at least one locking mechanism by means of which the position of the first guide means (1) and the second guide means (2) relative to each other can be locked and/or the position of the second guide means (2) and the third guide means (3) relative to each other can be locked,

   - the locking mechanism has at least one latch (18) and at least one counterpart (1521) to the latch (18) which serve for locking, and

   - the locking mechanism has at least one rod (152), wherein the rod (152) is arranged in the channel of the first guide means (1) and/or in the channel of the second guide means (2) and the counterparts (1521) to the latch (18) are provided on or in the rod or rods (152).
7. Securing assembly according to the preceding claim,
   characterised in that the rod (152) has recesses (1521) or projections which form counterparts to the latch (18).
8. Securing assembly according to any one of claims 1 to 7, characterised in that

   - the first guide means (1) has a profile which is partly C-shaped in cross-section, and the second guide means (2) is arranged so as to be linearly displaceable in the channel formed by the C-shaped profile,

   - on a slot of the C-shaped profile of the first guide means (1), lugs (101) are provided which project into the channel formed by the C-shaped profile, and

   - the second guide means (2), which is arranged displaceably in the channel of the first guide means (1), has, on an outer side, grooves (201) in which the lugs (101) engage indirectly or directly.
9. Securing assembly according to any one of claims 1 to 7, characterised in that

   - the first guide means (1) and optionally the second guide means (2) form a channel and the second guide means (2) is arranged in the channel formed by the first guide means (1) so as to be displaceable in the first direction, and optionally the third guide means (3) is arranged in the channel formed by the second guide means (2) so as to be displaceable in the first direction

   - the telescopic rail guide has at least one sliding bushing (12, 30) arranged between the first guide means (1) and the second guide means (2) or between the second guide means (2) and the third guide means (3).
10. Assembly according to the preceding claim, characterised in that the sliding bushing (12, 30) has a tab (121, 301) arranged between a wall of the first guide means (1) and a wall of the second guide means (2) or, optionally, a wall of the second guide means (2) and a wall of the third guide means (3), and in that, in the wall of the first guide means (1) or of the second guide means (2), a threaded bore is provided into which a threaded pin (13, 31) is screwed, the tip of which bears against the tab (121, 301).
11. Securing assembly according to any one of claims 1 to 10, characterised in that the first guide means (1) has a tab (11) to which a side panel of the bed is attached or can be attached.
12. Securing assembly according to the preceding claim, characterised in that the tab (11) has a recess (111) through which a screw is guided by means of which the side panel is screwed to the first guide means (1).
13. Securing assembly according to any one of claims 1 to 12, characterised in that the securing assembly has a sensor (24) by means of which the position of the first guide means (1) and the second guide means (2) relative to one another can be detected.
14. Securing assembly according to any one of claims 1 to 13, wherein the securing assembly can be pulled out so that the bed occupant is secured against falling out and can be pushed in so that the bed occupant can leave the bed, characterised in that the securing assembly has a drive, in particular a motor, by means of which the securing assembly can be pulled out and/or pushed in.

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