CN107440857A - For touching the lid and sick bed of sick bed function element - Google Patents

Abstract

The invention relates to a cover (1) for gaining access to a functional element (30) of a hospital bed (40), having a pivoting and/or pivoting support of the cover (1) on a basic body (41) of a hospital bed (40) mechanism (18), wherein the cover (1) has an inner part (3) and an outer part (2) detachably fixed on the inner part (3), wherein the outer part (2) has a plurality of fixing mechanisms (8, 14), and the inner part (3) has a plurality of paired fixing mechanisms (9, 10, 12) matched with the fixing mechanisms (8, 14), wherein the fixing mechanisms (8 ,14) and arranged on the outer part (2) and thus constituting the paired fixing mechanism (9,10,12) and arranged on the inner part (3), in order to fix the outer part (2) on the inner part (3) A functional connection between the fastening means (8, 14) and the counter fastening means (9, 10, 12) can be established by means of the combined travel-slip movement of the outer part (2) relative to the inner part (3), wherein The fastening means ( 8 , 14 ) and the counter fastening means ( 9 , 10 , 12 ) are arranged inside the cover ( 1 ) formed by the inner part ( 3 ) and the outer part ( 2 ) after the functional connection has been established. The invention also relates to a hospital bed ( 40 ) having such a cover ( 1 ).

Description

Covers for access to functional elements of the hospital bed as well as the hospital bed

technical field

The invention relates to a cover for providing access to functional elements of a hospital bed, with means for rotationally and/or pivotally mounting the cover on the bed base. The invention also relates to a hospital bed with a base body, a lying surface for a patient, a functional element arranged in or on the base body, and a cover mounted in rotation and pivoting on the base body for gaining access to the functional element.

Background technique

In the field of device construction, especially in the field of medical technology, two plastic half-shells are often fixedly connected to one another, and it is often desirable for reasons of appearance or hygiene that no visible connecting elements, such as screw heads, be visible on both sides. It can also happen that mechanisms or electronic components are installed in this housing composed of two half-shells, which are then advantageous for maintenance and recycling, and the half-shells can be separated from each other later.

Existing techniques for splicing half shells are, for example:

· Tighten by self-tapping bolts for plastics. Disadvantage: The bolts must be assembled, which, in addition to the high material costs, leads to long assembly times. The screw heads can be seen or have to be covered, which in particular creates an unfavorable appearance.

·Positioning by positioning hooks on one half-shell and corresponding positioning edges on the other half-shell. Disadvantage: High expense in the injection mold due to the need for barbs and the need for accurate coordination. The splice connection is not particularly strong and is difficult to remove, since all hooks have to be pushed back at the same time, which can result in the hooks breaking off easily. In addition, gaps are required for the hook connection to be accessible by a tool, which, in addition to the unfavorable appearance, also leads to unsafety, whether all hooks are already positioned, ie to poor process reliability.

Positioning by screwing in pre-assembled positioning elements, eg Böllhoff Snaploc®. Disadvantages here are high material and assembly costs and the fact that the connection can be undone again with a slight force, which is not desirable.

• Bonding has drawbacks, requires additional process steps, the connection is not detachable and has limited strength.

· Ultrasonic welding has disadvantages, likewise requires additional, complex process steps, and the connection cannot be released. In addition, weld seams degrade the appearance of the component.

· Mirror welding has disadvantages, likewise requires additional, complex process steps, and the connection cannot be released. So-called welding flash can occur, which adversely affects the appearance.

In addition, blow moulding, double-shell thermoforming and rotary sintering are mentioned as methods, furthermore processes such as laser sintering are used for producing plastic hollow bodies. In these methods, however, the hollow body is produced in only one processing step, so that retrofitting of components is not possible or can only be done to a very limited extent through small openings.

Contents of the invention

The object of the present invention arising from this prior art is to at least partially overcome the disadvantages of such covers which selectively enable or prevent access to functional elements of the hospital bed. The object of the present invention is, inter alia, to provide a two-part cover, with an outer part and an inner part, for accessing functional elements of the hospital bed, such as removable drawer elements, which in particular satisfy the requirements of the connection between the two parts of the cover. The following requirements:

No visible connection elements on the outer part and as few as possible on the inner part for good cleanliness

Resists deformations between the outer part and the inner part due to different temperature influences on the two parts, e.g. in the case of use as a thermotherapy device

Obtain uniform narrow mosaics across the board

Avoid disturbing assembly noises (clicks) when heating the lid

Simple detachability of the connection between the outer part and the inner part for possible required reprocessing in manufacture, maintenance and easy separation of materials when recycling components

• Low cost (material consumption and assembly costs).

The above object is achieved by a cover for accessing functional elements of a hospital bed having the features of independent claim 1 . This object is also achieved by a hospital bed with the features of the co-dependent claim 12 . Further characteristics and details of the invention are given by the dependent claims, the description and the figures. Features and details described here in connection with the cover according to the invention also apply, of course, to the hospital bed according to the invention and vice versa, so that a cross-reference can always be made to the disclosure content of the various aspects of the invention.

According to a first aspect of the invention, this object is achieved by a cover for gaining access to functional elements of the hospital bed, with means for rotationally and/or pivotally mounting the cover on the bed base. The cover is characterized in that it has an inner part and an outer part detachably fastened to the inner part. The outer part has a plurality of fastening means, and the inner part has a plurality of mating fastening means formed to match the fastening means of the outer part, wherein the fastening means are thus constituted and arranged on the outer part, and the mating means are formed in such a way The fastening means are also arranged on the inner part, for fastening the outer part on the inner part by means of a combined stroke-sliding movement of the outer part relative to the inner part, a functional connection between the fastening means and the counter fastening means can be established, wherein the After the functional connection has been established, the fastening means and the counter fastening means are arranged inside the cover formed by the inner part and the outer part.

That is, the fastening means are formed and arranged on the outer part and the counter fastening means are formed and arranged on the inner part such that they are arranged inside the cover in the state in which the outer part is fixed on the inner part, or by Cover surrounded. The fastening means here also include counter fastening means which are not arranged on the outer part or the inner part at the edge regions of these parts, but are arranged offset from the edge regions on the inner part of the outer part or the inner part. This ensures that they cannot be seen on the one hand. On the other hand, the fastening means and the counter fastening means are thus not easily accessible after the functional connection has been established. The outer part is thus fastened to the inner part by the inner fastening. The fastening takes place inside the assembled cover, whereby the outside of the cover can be formed in a simple, especially smooth manner and thus easy to clean. Furthermore, there is no risk of scratches, since the fastening means and the counter fastening means are covered in the assembled state of the cover.

The outer part is provided with a plurality of fixing mechanisms, and the inner part is provided with a plurality of paired fixing mechanisms matched with the fixing mechanisms of the outer part, thereby ensuring that the outer part enters the fixing mechanism in a plurality of different positions. The functional link between the mechanism and the counterpart fixed mechanism. As a result, the outer part fits securely on the inner part after the functional connection between the fastening means and the counter fastening means has been established. The fastening means are preferably configured in such a way that when the outer part and the inner part are heated differently, they can be displaced in the direction of the pivot axis of the cover towards the counter fastening means, i.e. slide easily against each other, and therefore no conflicts between the outer part and the inner part occur. deformation between parts. The fastening means are preferably arranged distributed on the outer part, and the counter fastening means are arranged correspondingly distributed on the inner part. Particularly preferably, they are each arranged in one or more rows, preferably at a defined distance from one another.

The fastening means and the counter fastening means are arranged distributedly on the outer part or the inner part in such a way that in order to fix the outer part on the inner part, a combined stroke-sliding movement of the outer part relative to the inner part can be established in the fastening The functional link between the mechanism and the counterpart fixed mechanism. During the stroke movement of the outer part relative to the inner part, the fastening means and the counter fastening means are preferably aligned with one another, so that they enter into a functional connection on the inner part for fastening the outer part during the subsequent sliding movement.

A stroke movement within the meaning of the invention means that the outer part and the inner part move relative to each other and thus move the fastening means in the direction of the mating fastening means formed in a matching manner. That is, the outer part is in contact with the inner part at the end of the stroke movement. Further movement of the outer part in the direction of the inner part is thus no longer possible. Sliding movement in the sense of the invention means that the outer part can slide along the inner part until the fastening means and the counter fastening means enter into a fixed but releasable functional connection to each other on the inner part for fastening the outer part. The direction of the sliding movement is advantageously perpendicular or nearly perpendicular to the direction of the stroke movement. The contact of the fastening means with the counter fastening means during and at the end of the sliding movement is not visible from the outside, since this contact takes place inside the combined cover.

Such a cover also has the advantage that the outside of the cover can be designed in a simple and smooth manner and can thus be cleaned very well. A plurality of fastening means and matching mating fastening means are provided, so that a uniformly circumferential narrow joining pattern can be achieved between the outer part and the inner part. The fastening means move relative to each other in the direction of the pivot axis of the cover, thereby also ensuring that no deformations between the outer part and the inner part occur due to different temperature influences on the two parts. Furthermore, due to the relative mobility of the fastening means and the mating fastening means formed in an adapted manner, disturbing assembly noises (clicking noises) can be avoided when the cover is heated. Any rework that may be required during production can be realized in a simple manner by the releasability of the connection between the outer part and the inner part. In addition, a simple separation of the material during recycling of the components can be achieved.

In particular, the outer part and the inner part are designed such that, in the fixed state, they form a container with a hollow space with one another, in which the mutual contact of the fastening means and the counter fastening means takes place. When the functional connection is established, the outer part and the inner part engage with each other in such a way that they cannot be separated from each other, especially in the direction of stroke movement. The outer part and the inner part preferably enter into such a functional connection with one another that no sliding movement is possible without the application of force. In this case, the fastening means and the counter fastening means are additionally brought into a clamped connection with one another. The outer part can be moved relative to the inner part in the direction of the sliding movement only under the applied opening force, which is greater than the adhesive friction force between the fastening means of the outer part and the counter fastening means of the inner part. That is to say, in addition to the positive fit, it is possible for the fastening means of the outer part and the mating fastening means of the inner part to form a mutually non-positive functional connection. In addition to clamping the fixing mechanism and the paired fixing mechanism to each other, they can also enter into a positioning connection with each other.

According to a preferred development of the invention, in a cover it can be provided that the inner part has a base, a surrounding wall and an opening, and that the outer part is designed as a cover to cover the opening of the inner part. If the lid is assembled together, ie the outer part is fastened to the inner part, the lid forms a closed container. Preferably, both the outer part and the inner part are elongated, so that the cover assumes an elongated shape, similar to a drawer cover.

Preferably a cover, wherein the fastening means of the outer part has a plurality of fastening ribs protruding from the base body of the outer part, barbs being arranged laterally on at least two of the fastening ribs, and the counter fastening means of the inner part have a plurality of The paired fixing ribs protruding from the bottom and/or the surrounding wall, wherein L-shaped notches are arranged on at least two paired fixing ribs for respectively accommodating the fixing ribs and their barbs. The outer part preferably has a base body which has the shape of a cover, in particular a plate. In this case, the base body can be slightly curved or preferably planar. Protruding fastening ribs are arranged on one side of the outer part base body. This means that the fastening rib is arranged on that side of the outer part which faces the inner part when the outer part is fastened to the inner part. Barbs are respectively arranged on at least two fastening ribs, preferably on all fastening ribs. The barbs are preferably arranged on the free ends of the protruding fastening ribs, whereby the fastening ribs assume a hook-shaped or L-shaped shape. The mating fastening means of the inner part have a plurality of mating fastening ribs protruding from the base and/or the surrounding wall, wherein L-shaped recesses are arranged on at least two of the mating fastening means for in particular a positive and positive fit The ground respectively accommodates the fixing rib and its barb. The protruding counterpart fastening rib is preferably arranged on the bottom of the inner part and has a planar shape. In the case of counter-fastening ribs arranged on the surrounding wall of the inner part, these counter-fastening ribs are formed bent, in particular at right angles, so that their free ends protrude in the direction of the outer part. L-shaped notches are respectively arranged on at least two mating fastening means, preferably on all mating fastening means, for respectively accommodating a fastening rib and its barb. These L-shaped notches make it possible to bring the fastening means of the outer part into a fixed but releasable functional connection with the counter-fastening means of the inner part at the end of the sliding movement.

A cover is particularly preferred, in which each barb is at least partially arched, in particular has an insertion chamfer on at least one side. This makes it easier for the barbs to slide into the respective L-shaped recess during the sliding movement of the outer part relative to the inner part. The barb is curved in such a way that at the end of the sliding movement the thickest part of the barb comes into contact, preferably frictional contact, with the wall of the respective L-shaped notch. A reliable, but releasable, functional connection is thus achieved between the fastening rib and the counter fastening rib. Preferably, lead-in chamfers are provided on both sides of the barb for guiding the barb into the L-shaped notch of the mating fastening rib.

According to a further preferred development of the invention, in a cover it can be provided that each L-shaped recess is formed to widen towards the end-side end of the respective mating fastening rib, in particular with a funnel-shaped introduction chamfer. This ensures that during the stroke movement of the outer part towards the inner part, the fastening means, in particular the fastening ribs, are correctly positioned against the counter fastening means, in particular the counter fastening ribs. This means that the fastening ribs are introduced via the funnel-shaped introduction chamfers into the L-shaped recesses of the correspondingly matched counterpart fastening ribs, whereby the outer part is automatically centered correctly towards the inner part. At the end of the stroke movement, the fastening rib and the counter-fastening rib are aligned with one another in such a way that the outer part can still move relative to the inner part in only one direction. A sliding movement of the outer part relative to the inner part is carried out in this direction, whereby the barbs of the respective fixing ribs can be inserted into the corresponding respective L-shaped recesses of the mating pair of fixing ribs, thereby entering the fixed, but releasable functional connection.

In addition, it can be provided in a cover that the fastening means of the outer part have positioning means and the counter-fastening means of the inner part have mating positioning means, which are designed in such a way and arranged on the outer part and the inner part respectively, that when the fastening is established The locating facility is detachably positioned with the counterpart locating facility upon functional connection between the mechanism and the counterpart securing mechanism. A cover configured in this way ensures that the outer part is held securely on the inner part after the functional connection has been established in this position. The positioning means is positioned on the counterpart positioning means, whereby the outer part can no longer be moved relative to the inner part in the direction of the sliding movement. Particularly preferably, the positioning means or the counter-locating means is designed to be spring-elastic. During the sliding movement, one of the two positioning means is bent against the force of the spring and thus is positioned on the other positioning means in each case.

Therefore, preferably in a cover it can be provided that the counter-locating device is designed to be spring-elastic, and that at least one protruding securing rib is arranged with a bevel inclined towards the securing rib, by means of which in order to establish the positioning of the counter-locating device on the positioning device The positioning spring acts elastically on the counter-locating means, or the positioning means is spring-elastically formed and on at least one protruding counter-fixing rib an incline is arranged towards the counter-fixing rib, through which the counter-locating means is positioned in order to establish the positioning means The locating spring on the elastically loads the locating facility. In other words, in order to ensure a loosening-proof or functional connection, a lateral displacement between the outer part and the inner part can be suppressed at the end of the joining process, ie, the sliding movement. To this end, use especially centrally formed counter-locating means on the inner part, preferably configured as a positioning tongue, which during the described joining process in the direction of the sliding movement first elastically upwards by means of a rib-shaped bevel on the outer part bending. When the sliding movement or the lateral engagement movement of the outer part relative to the inner part has ended so much that the outer parts are positioned relative to each other in a defined position, the mating positioning device, ie the positioning tongue, falls into the matingly formed positioning device, in particular Inside the muscle gap. As a result, the lateral displacement, that is to say the sliding movement, is locked and the outer part and the inner part are connected to each other irreleasably for the first time. However, the cover is designed in such a way that the outer part can be detached from the inner part again. For this purpose, it is provided in the preferred cover that an opening for introducing an opening tool is provided in the inner part or in the outer part in order to release the functional connection between the fastening means and the counter fastening means. The opening is preferably designed to be small and arranged on the inner or outer part in such a way that the user cannot easily see the opening when the cover is mounted in a pivoting and/or pivoting manner on the bed base. The opening is preferably arranged on a wall of the inner part, which forms the bottom of the inner part in the mounted state of the cover on the patient bed. As the opening tool, for example, a straight pin or a thin Allen wrench can be used. In particular, the opening is arranged on the cover in such a way that by inserting an opening tool through the opening into the inside of the cover, the user can release the positioning means and the counter-locking means in order to enable a sliding movement of the outer part relative to the inner part again. In particular, the opening tool can be inserted into the lid interior in such a way that either the locking means or the counter locking means are spring-elastically deformed for releasing their mutual locking.

According to a further preferred development of the invention, it can be provided in a cover that the inner part of the cover has positioning means for clamping the cover on the bed base with a defined force, for closing the cover quietly on the bed base The damping mechanism on the bed and/or at least one sealing element for sealing the outer part on the inner part and/or at least one part adjacent to the bed base, such as a side flap hinge. The cover preferably has all three of the above-mentioned features. The positioning mechanism ensures that the cover is clamped with a defined force on the bed base. Only by exerting a defined force can the cover be rotated and/or pivoted relative to the bed base so that functional elements of the bed, such as drawer elements, can be accessed or pulled out of the bed base come out. The damping mechanism prevents the lid from making noise when it is turned or pivoted for opening and especially for closing. At least one sealing element seals the outer part to the inner part and/or at least one part immediately adjacent to the bed base, for example a side flap hinge. A possible penetration of dirt or liquid into the cover can be prevented, for example, by the sealing element. According to the invention, spring-elastic side slides can be formed as sealing elements on both sides of the cover, which serve to seal gaps in the immediate vicinity of hospital bed parts. These sealing elements take care, in particular, to always keep the gaps the same narrow regardless of thermal expansion of the cover or surrounding components. As a result, heat losses in the thermostat can be minimized, since the air gap is kept as small as possible.

Furthermore, in a cover it can be provided that the inner part has air-conducting channels. As a result, the hot air circulation under the bed can be supported. The hospital bed is in particular a thermotherapy device, preferably an incubator for neonates and infants.

According to the second aspect of the invention, the object is achieved by a hospital bed with a base body, a lying surface for the patient, functional elements arranged in or on the base body, such as movable mounted drawer elements, and swiveling on the base body- and/or pivotally mounted covers for access to functional elements. The cover is designed according to the first aspect of the invention, in particular according to any one of claims 1-11.

Therefore, all features and advantages described for the cover according to the first aspect of the invention also apply to the hospital bed according to the second aspect of the invention.

The bed base can be a frame which at least partially surrounds the functional element. The cover is preferably rotatably pivotally supported on the base body via pins arranged laterally on the cover or through shafts protruding toward both sides. The cover is fixed with a defined force on the bed base in the closed position by means of the positioning mechanism. In the closed position the cover prevents access to the functional elements. If the cover is swiveled with a defined force, this cover can be shifted into an open position in which functional elements can be accessed, for example the x-ray drawer can be moved relative to the bed base, in particular can be pulled out of the bed base.

A hospital bed is preferred, wherein the functional element has a drawer element, an x-ray drawer for receiving an x-ray cassette and/or a lying surface. In the pulled-out state of the X-ray drawer, an X-ray box can be inserted into the X-ray drawer, and then positioned under the lying surface of the hospital bed by pushing the X-ray drawer in. X-ray imaging can thus be performed without lifting the patient onto the X-ray box. The cover can be designed and arranged on the patient bed in such a way that it only prevents or releases access to the x-ray drawer. However, this cover can also be structured and arranged on the hospital bed in such a way that it releases or correspondingly prevents interference with the movable lying surface of the hospital bed. It is also conceivable for the functional element to include not only an x-ray drawer for accommodating x-ray cassettes, but also a lying surface for the patient. In this case, the cover is dimensioned such that it either releases or also prevents access not only to the x-ray drawer but also to the lying surface.

The hospital bed is preferably a thermotherapy device, especially a thermostat.

Description of drawings

Additional measures for improving the invention are given by the following description of an exemplary embodiment of the invention shown in the drawing. All the features and/or advantages indicated in the claims, the description and the drawings, including structural details and spatial arrangements, can be important aspects of the invention not only individually but also in various combinations. Components with the same function and principle of operation are provided with the same reference symbols in the figures. Respectively briefly show:

Figure 1 is a perspective view of the closed cover for accessing the functional elements of the bed,

Figure 2 according to the open state of the cover of Figure 1,

Figure 3 Perspective view of the outer part of the cover,

Figure 4 is a perspective view of the inner parts of the cover,

Figure 5 The outer part during the stroke movement in the direction of the inner part of the cover,

Fig. 6 The outer part and the inner part according to Fig. 5 just before the end of the stroke movement,

Figure 7 is a perspective view of the fixing mechanism of the outer part and the mating fixing mechanism of the inner part during the stroke movement of the outer part in the direction of the inner part,

Fig. 8 The fastening mechanism according to Fig. 7 and the mating fastening mechanism according to Fig. 7 just before the end of the stroke movement of the outer part in the direction of the inner part,

FIG. 9 the outer part according to FIG. 3 and the inner part according to FIG. 4 during the sliding movement of the outer part relative to the inner part,

FIG. 10 the outer part and the inner part according to FIG. 9 at the end of the sliding movement of the outer part relative to the inner part,

FIG. 11 the fastening mechanism according to FIG. 7 and the mating fastening mechanism during the sliding movement of the outer part relative to the inner part,

FIG. 12 the fastening mechanism according to FIG. 7 and the mating fastening mechanism at the end of the sliding movement of the outer part relative to the inner part,

Figure 13 Closed cover, opening tool inserted inside the cover,

Figure 14 The cover after the positioning of the outer part and the inner part has been opened by means of an opening tool,

FIG. 15 the fastening mechanism according to FIG. 7 and the mating fastening mechanism during insertion of the opening tool,

FIG. 16 the fastening mechanism according to FIG. 7 and the mating fastening mechanism after the positioning of the outer part and the inner part has been opened by the opening tool,

Figure 17 Side view of the hospital bed.

detailed description

FIG. 1 schematically shows a perspective view of a closed cover 1 for accessing functional elements 30 of a hospital bed 40 . The cover 1 is designed in two parts and has an inner part 3 and an outer part 2 . The cover 1 has an elongated shape and also has means 18 for rotationally or pivotally mounting the cover 1 on the base body 41 of the bed 40 , here in the form of a shaft protruding toward both sides. The inner part 3 has a container-like, in particular trough-like shape, with a bottom 20 and a surrounding wall 21 , see FIG. 2 . In the open state, the cover 1 releases access to the functional element 30 of the patient bed 40 . As a result, the functional element 30 , in particular an x-ray drawer, can be pulled out of the bed base body 41 , the hospital bed being in particular a thermotherapy device, for example a thermostat. In the closed state the cover 1 makes closed contact with the functional element 30 , so that it cannot be accessed, in particular cannot be pulled out of the base body 41 of the bed 40 . An x-ray box can be installed in the drawer element 30 or in the x-ray drawer, so that x-rays can be irradiated without lifting or moving the patient on the lying surface 42 of the hospital bed 40 . Such a hospital bed 40 is schematically shown in FIG. 17 .

The functional element 30 designed as a drawer element can be formed in two parts and also have a lying surface 42 , whereby this lying surface can also be pulled out of the base body 41 of the hospital bed 40 . If the hospital bed is designed as an incubator, the side walls of the incubator are usually first folded out before the lying surface is pulled out.

The inner part 3 can be used to accommodate components and functional elements. In this exemplary embodiment, the inner part 3 of the cover 1 has positioning means 4 for clamping the cover 1 on the base body 41 of the bed 40 with a defined force, damping means for closing the cover 1 quietly on the base body 41 of the bed 40 5 and laterally arranged sealing elements 6 for sealing at least one immediately adjacent, not shown, part of the bed 40 on the base body 41 of the bed 40 . The sealing element 6 can be designed as a spring-loaded side slide 6 . In particular, the outer cover 1 has an air-conducting channel 7 on the inner part 3 .

FIG. 3 schematically shows a perspective view of the outer part 2 . This outer part has the function of a cover for sealingly covering the opening of the inner part 3 . The outer part 2 is preferably designed as a planar plate. Both the outer part 2 and the inner part 3 preferably each comprise the fastening means and the counter fastening means are produced from a single injection-molded part. In particular, manufacturing costs can thus be saved. On the side of the cover 1 facing the inner part 3 in the closed state, a plurality of fastening means 8 in the form of fastening ribs are arranged. The fastening ribs 8 protrude in particular vertically from the side of the outer part 2 . Lateral barbs 23 are arranged on the free ends of the fastening ribs 8 , whereby the fastening ribs 8 assume the shape of a hook.

"Large" bevels 11 are arranged on the two centrally arranged fastening ribs 8, which serve to align the fastening ribs 8 during the stroke movement of the outer part 2 towards the inner part 3 when joining the outer part 2 to the inner part 3 Fixing rib 9, see Fig. 4. The inner part 3 shown in FIG. 4 has the shape of a hexahedron which is open on one side. The base 20 is surrounded laterally by a wall 21 . The paired fixing ribs 9 formed to match the fixing ribs 8 of the outer part protrude from the bottom 20 of the inner part. The paired fixing ribs 9 have L-shaped notches 10 for respectively accommodating the fixing ribs 8 including their barbs 23 . Arranged centrally on the base 20 of the inner part 3 is a counter-fastening means 12 in the form of a spring-elastic locking tongue. When joining the outer part 2 with the inner part 3 , the outer part 2 is moved with a stroke movement in the direction A of the inner part 3 , see FIGS. 5 and 6 . The positioning tongue 12 is elastically bent upwards when engaging the outer part 2 with the inner part 3 .

After the end of the stroke movement in direction A, the outer part 2 touches the inner part 3 . Then the outer part 2 slides relative to the inner part 3 in a sliding movement. This sliding movement takes place in the sliding direction B. The outer part 2 slides along relative to the inner part 3 . The sliding movement in the sliding direction B is shown in FIGS. 9 and 10 . The sliding direction B is preferably perpendicular to the travel direction A during the travel movement of the outer part 2 relative to the inner part 3 . If the lateral sliding movement ends in the sliding direction B so much that the outer part 2 and the inner part 3 are positioned centrally with respect to each other, the positioning tongue 12 elastically bent by the slope 13 of the fastening rib 8 falls into the mating pair Inside the positioning means 14 , which is here formed as a gap between the two fastening ribs 8 . As a result, the lateral displacement of the outer part 2 on the inner part in the sliding direction B is blocked and the outer part 2 and the inner part 3 are firmly connected to each other.

FIGS. 7 and 8 again show on an enlarged scale the travel movement of the fastening rib 8 of the outer part 2 in the travel direction A towards the counter fastening rib 9 of the inner part 3 . In order to be able to easily insert the fastening rib 8 into the L-shaped recess 10 in the counter fastening rib 9 of the inner part, the counter fastening rib 9 has an introduction chamfer 10a. Assembly of the outer part 2 on the inner part 3 is thereby facilitated. The “big” bevel 11 on the two fastening ribs 8 touches the counter fastening rib 9 of the inner part 3 during the stroke movement in the stroke direction A and ensures the centering of the outer part 2 towards the inner part 3 . During the stroke movement the barbs 23 of the fastening rib 8 slide along the side of the counter fastening rib 9 without touching them. During the stroke movement in the stroke direction A, the spring-elastic locking tongue of the inner part 3 is simultaneously bent upwards on the fastening rib 8 via the bevel 13 .

The sliding movement in the sliding direction B of the outer part 2 relative to the inner part 3 is shown in FIGS. 11 and 12 . That is, after the end of the stroke movement of the outer part in the stroke direction A towards the inner part 3 , the outer part 2 is preferably moved perpendicular to the stroke direction A in the sliding direction B relative to the inner part 3 . Here the barbs 23 of the fastening rib 8 slide into the L-shaped recesses 10 of the mating fastening rib 9 . For easy sliding in, the barb 23 has a lead-in chamfer 8a. After the end of the sliding movement in the sliding direction B, the locking tongue 12 is positioned in the locking means 14 , ie in a recess of the same size as the locking tongue 12 . The outer part 2 is thus securely fastened to the inner part 3 because the sliding direction B is now locked.

The fastening of the outer part 2 on the inner part 3 takes place by means of the combined stroke-sliding movement of the outer part 2 relative to the inner part 3 . Here, a functional connection can be established between the fastening means 8 , 14 of the outer part 2 and the counter fastening means 9 , 10 , 12 of the inner part 3 , wherein the fastening means 8 , 14 and the counter fastening means 9 , 10 , 12 are established The functional connection is then arranged inside the cover 1 formed by the inner part 3 and the outer part 2 . The barbs 23 of the fastening rib 8 are arranged in the L-shaped recess 10 of the counter fastening rib 9 in a positive and/or force-fit manner for producing the functional connection. The outer part 2 can move relative to the inner part 3 neither in the travel direction A nor in the sliding direction B.

In order to be able to separate the outer part 2 from the inner part 3 afterwards, the inner part 3 has a small opening 15 in the wall 21 on the bottom side of the inner part 3 , here in the form of a hole, see FIG. 4 . An opening tool 16, a thin straight pin or an Allen wrench, etc. can be inserted from the outside through the hole 15, see FIGS. 15 and 16. By opening the tool 16 , the counter positioning means 12 , here the positioning tongue, can be bent upwards in the bending direction C by pressing and held in this position. The stop ribs 17 arranged on the bottom 20 of the inner part 3 form a limit, so that the counter-locating means 12 , here the locking tongues, cannot be overloaded.

The sliding movement in the sliding direction B is no longer blocked by the deflection of the positioning tongue 12 , so that the outer part 2 and the inner part 3 can move relative to each other in the sliding direction B again. After the barb 23 has been released from the L-shaped recess 10 in the counter-fastening rib 9, the above-mentioned joining process can be carried out in reverse order, whereby the outer part 2 can be separated from the inner part 3 again. This means that to separate the outer part 2 from the inner part 3 , after unpositioning, first a sliding movement in the direction opposite to the sliding direction B is effected, followed by a stroke movement in the direction opposite to the stroke direction A.

Preferably, the cover 1 has many above-mentioned hook shapes or hook ribs 8 on the outer part 2, and on the inner part 3, there is an L-shaped notch 10 matching with the hook ribs in the matching fixing rib 9, and also on the inner part 3 The upper centrally arranged counter-locating device 12 , preferably a positioning tongue, has a positioning device 14 , in particular a rib notch, which matches the counter-locating device on the outer part 2 .

The outer part 2 preferably has a certain number (twelve in the example shown in Figs. The upper fastening rib 8 has barbs 23 which are preferably evenly distributed on the inner side of the outer part 2.

The inner part 3 is provided with protruding mating fastening ribs 9 which have a corresponding number of L-shaped notches 10 which match the hook ribs 8 of the outer part 2 . The hook ribs have lateral introduction chamfers 8a, and the L-shaped recesses 10 likewise have introduction chamfers 10a, thereby facilitating the mutual assembly of the parts 2,3.

When the outer part 2 and the inner part 3 are assembled, they are moved closer to each other by a lateral displacement (travel direction A, displacement approx. 10 mm, displacement direction is arbitrary due to the symmetrical design of the preferred "hook rib" 8). Here the hook rib 8 engages with the L-shaped notch 10 . The two large ramps on the two hook ribs on the outer part 2 are helpful when finding the degree of displacement, on which the two vertically mating fixing ribs 9 of the inner part 3 slide during the stroke movement in direction A .

As soon as the parts 2, 3 are in contact with each other, a lateral sliding movement B is carried out as a second step until the outer part 2 and the inner part 3 are centered on each other again, whereby the hook rib 8 engages the L-shaped notch 10 and thus forms the shape Locking, the outer part and the inner part 2, 3 are simultaneously fixed together in all engagement positions in the direction of travel A.

In order to reliably prevent the functional connection established between outer part 2 and inner part 3 from being released at the end of the travel-sliding movement, it is necessary to suppress the lateral displacement between outer part and inner part 2 , 3 at the end of the joining process. For this purpose, a centrally formed positioning tongue 12 is used on the inner part 3 , which is first elastically bent upwards in the direction of travel A by means of a rib-shaped bevel 13 on the outer part 2 during the described joining process. When the lateral sliding movement B has ended in this way, the parts 2 , 3 are positioned centrally relative to each other again, and the locking tongue 12 falls into the matching locking means 14 , in particular configured as a rib notch. This prevents a lateral displacement in the sliding direction B and thus connects the outer and inner parts 2 , 3 to one another in a non-detachable manner.

An opening tool 16 can be inserted into the interior of the cover 1 through a small hole 15 on the underside of the inner part 3 for re-release of the functional connection, in particular for positioning. In other words, in order to be able to separate the outer part and the inner part 2 , 3 from one another again, the positioning tongue 12 is bent upwards in the bending direction C with the opening tool 16 and fixed in this position. As a result, the sliding direction B is no longer blocked, whereby the outer and inner parts 2 , 3 can again be moved laterally away from each other, and the parts 2 , 3 can again be separated from each other with opposite stroke movements.

According to the special advantage of lid 1 of the present invention is:

- There are no visible connection elements on the outer and inner parts 2,3. The small hole 15 for bending the positioning tongue 12 upwards is the only hole visible from the outside. It can, for example, at the same time serve as a drainage hole for infiltrated liquids.

- There are as many connection points as desired between the outer part and the inner part 2 , 3 . Limitation is achieved solely by expense or cost of tool construction (barbs can be achieved by removing the core or spring bar).

- The form-fitting and/or non-positive functional connection can be deactivated easily again when it is known how to do so. An opening tool is required for "opening" functional connections. That is, practically inaccessible to users, but easily accessible for repair and maintenance.

- Compensation of tolerances in the longitudinal direction between the outer part and the inner part 2 , 3 is achieved. Regardless of their actual longitudinal expansion, the parts 2 , 3 are always positioned centrally relative to one another by the centrally arranged positioning tongue 12 . The shape of the horizontal "hook ribs" 8 allows horizontal compensating movements of the outer and inner parts 2, 3 relative to each other.

- Low cost, since no additional assembly material is required and the components 2, 3 can be joined to one another very simply and quickly.

- Good assembly reliability is obtained, because of the forced lateral engagement in the sliding direction B, all engagement points, ie the barbs 23 , come into engagement simultaneously in the recesses 10 . The positioning of the positioning tongue 12 gives an acoustic feedback when the final position is reached and thus serves to secure the functional connection of the outer part 2 to the inner part 3 .

FIG. 17 shows a schematic perspective view of a hospital bed 40 , which is designed as a thermostat. The hospital bed 40 has a base body 41 and a lying surface 42 for a patient, especially a newborn. The cover 1 according to the invention is mounted on the base body 41 in a rotational and/or pivotable manner. Furthermore, a movably mounted functional element 30 , here in the form of a drawer element, is arranged on the base body 41 . In this exemplary embodiment, the cover 1 is folded open so that the functional element 30 can be accessed and seen. That is, the drawer element 30 can be pulled out from the base body 41 of the hospital bed 40 . The drawer element 30 is preferably an x-ray drawer, into which an x-ray box can be inserted in the pulled-out state, whereby in the pushed-in state of the x-ray drawer 30 the x-ray box is arranged directly below the lying surface 42, and when X-rays can be received by the patient while the patient is on the lying surface 42 . The hospital bed 40 also has a radiant heater 44 , the beams 45 of which are schematically shown. Furthermore, the hospital bed 40 has a cover for covering the lying surface 42 . The cover 1 can be constructed as shown in FIGS. 1 to 16 .

list of reference signs

1 cover/ray cover

2 external parts

3 internal parts

4 positioning mechanism

5 buffer mechanism

6 Sealing element / spring-elastic side slide

7 air channel

8 Fixing Mechanism/Fixing Rib/Hook Rib

8a Lead in chamfer

9 Pairing Fixing Mechanism/Pairing Fixing Rib

10 Matching fixing mechanism/L-shaped notch

10a Lead-in chamfer

11 Bevel on the fixing rib

12 Pairing Fixing Mechanism/Pairing Positioning Facility

13 slopes

14 Fixing Mechanism/Positioning Facilities

15 openings/hole

16 Open Tool

17 stop rib

18 Mechanism for supporting the radiation cover

19 Internal parts opening

20 bottom

21 wall

22 Outer part base

23 barbs

30 Functional elements/drawer elements/ray drawers

40 beds

41 bed base

42 flat surface

43 hood

44 ray heating

45 optical path

A travel direction

B Slip direction

C Bending direction of paired positioning facility

Claims (14)

1. one kind is used to touch sick bed（40）Function element（30）Lid（1）, have be used for rotate-and/or swing twelve Earthly Branches Hold lid（1）In sick bed（40）Matrix（41）On mechanism（18）, it is characterised in that the lid（1）With inner part（3）With it is removable It is fixed on inner part with unloading（3）On exterior part（2）, wherein the exterior part（2）With multiple fixed mechanisms（8,14）, and The inner part（3）With multiple and fixed mechanism（8,14）Match the pairing fixed mechanism formed（9,10,12）, wherein so Form the fixed mechanism（8,14）And it is externally arranged part（2）Upper and such form matches fixed mechanism（9,10,12） And it is arranged in inner part（3）On, in order to fix exterior part（2）In interior part（3）It is upper to utilize exterior part（2）Relative to inner part （3）Stroke-sliding motion of combination can establish in fixed mechanism（8,14）With matching fixed mechanism（9,10,12）Between Function connects, wherein the fixed mechanism（8,14）With pairing fixed mechanism（9,10,12）Arranged after function connects are established Passing through inner part（3）And exterior part（2）The lid of formation（1）Inside.

2. lid as claimed in claim 1（1）, it is characterised in that the fixed mechanism（8,14）The pairing formed with matching is consolidated Determine mechanism（9,10,12）It is designed to the function connects each other into shape-and/or force closure.

3. lid as claimed in claim 1 or 2（1）, it is characterised in that the inner part（3）With bottom（20）, circular wall Body（21）And opening（19）, and the exterior part（2）As cover design into cover inner part（3）Opening（19）.

4. such as the lid any one of above-mentioned claim（1）, it is characterised in that the exterior part（2）Fixed mechanism（8, 14）With multiple from exterior part（3）Matrix（22）Outstanding fixing muscle（8）, wherein at least two fixing muscles（8）Upper side Arrange barb（23）, and the inner part（3）Pairing fixed mechanism（9,10,12）With multiple from bottom（20）And/or Circular wall body（21）Outstanding pairing fixing muscle（9）, wherein matching fixing muscle at least two（9）Upper arrangement L-shaped lacks Mouthful（10）, for accommodating fixing muscle respectively（8）With its barb（23）.

5. lid as claimed in claim 4（1）, it is characterised in that each barb（23）Form at least part arching, especially extremely It is few that there is importing chamfering on side（8a）.

6. the lid as any one of claim 4 or 5（1）, it is characterised in that each L-shaped breach（10）Match somebody with somebody towards each To fixing muscle（9）End face side end extended form, especially with funnel shaped importing chamfering（10a）.

7. such as the lid any one of above-mentioned claim（1）, it is characterised in that the exterior part（2）Fixed mechanism（8, 14）With location facilities（14）, and the inner part（3）Pairing fixed mechanism（9,10,12）With pairing location facilities （12）, they so form and are arranged in exterior part（2）And inner part（3）On, establishing fixed mechanism（8,14）With Match fixed mechanism（10,12）Between function connects when the location facilities（14）With matching location facilities（12）Removably Positioning.

8. lid as claimed in claim 7（1）, it is characterised in that the pairing location facilities（12）Form spring, and And preferably at least one fixing muscle protruded（8）It is upper to arrange towards fixing muscle（8）Inclined inclined-plane（13）, by the inclined-plane in order to Establish pairing location facilities（12）In location facilities（14）On retaining spring flexibly load the pairing location facilities（12）, Or the location facilities（14）Form and preferably at least one pairing fixing muscle protruded spring（9）On arrange to Pairing fixing muscle（9）Inclined inclined-plane, by the inclined-plane in order to establish location facilities（14）In pairing location facilities（12）On Retaining spring flexibly load the location facilities（14）.

9. such as the lid any one of above-mentioned claim（1）, it is characterised in that in order to release in fixed mechanism（8,14）With Match fixed mechanism（9,10,12）Between function connects in interior part（3）Or in exterior part（2）In be provided be used for insert beat Go into operation tool（16）Hole（15）.

10. such as the lid any one of above-mentioned claim（1）, it is characterised in that the lid（1）Inner part（3）Have For with the power clamp cover of determination（1）In sick bed（40）Matrix（41）On detent mechanism（4）, close lid for low noise （1）In sick bed（40）Matrix（41）On buffer gear（5）And/or at least one be used for sealed external part（2）In interior part（3）On And/or at least one close to sick bed（40）Matrix（41）Part on potted component（6）.

11. such as the lid any one of above-mentioned claim（1）, it is characterised in that the inner part（3）With air guide channel （7）.

A kind of 12. sick bed（40）, there is matrix（41）, bed surface for patient（42）, be arranged in matrix（41）The inside or on The function element in face（30）And in matrix（41）It is upper rotation-and/or swinging mounting, for touching function element（30）'s Lid（1）, it is characterised in that the lid（1）According to any one of the claims form.

13. sick bed as claimed in claim 12（40）, it is characterised in that the function element（3）With drawer elements, it is used for The X-ray drawer and/or bed surface of accommodating X-ray box（42）.

14. the sick bed as described in claim 12 or 13（40）, it is characterised in that the sick bed（40）It is thermal cure instrument, especially It is insulating box.