CN107440857B

CN107440857B - Cover for accessing a functional element of a hospital bed and hospital bed

Info

Publication number: CN107440857B
Application number: CN201710403481.4A
Authority: CN
Inventors: M.汉佩
Original assignee: Draegerwerk AG and Co KGaA
Current assignee: Draegerwerk AG and Co KGaA
Priority date: 2016-06-01
Filing date: 2017-06-01
Publication date: 2020-05-01
Anticipated expiration: 2037-06-01
Also published as: CN107440857A; DE102016006579A1

Abstract

The invention relates to a cover (1) for contacting a functional element (30) of a patient bed (40), having a means (18) for rotatably and/or pivotably mounting the cover (1) on a base body (41) of the patient bed (40), wherein the cover (1) has an inner part (3) and an outer part (2) detachably fastened to the inner part (3), wherein the outer part (2) has a plurality of fastening means (8, 14) and the inner part (3) has a plurality of mating fastening means (9, 10, 12) that are formed to match the fastening means (8, 14), wherein the fastening means (8, 14) are formed and are arranged on the outer part (2) and the mating fastening means (9, 10, 12) are formed and are arranged on the inner part (3), and for fastening the outer part (2) on the inner part (3) a combined stroke-sliding movement of the outer part (2) relative to the inner part (3) is used to fasten the outer part (3) A functional connection between the fastening means (8, 14) and the mating fastening means (9, 10, 12) can be established, wherein the fastening means (8, 14) and the mating 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) with such a cover (1).

Description

Cover for accessing a functional element of a hospital bed and hospital bed

Technical Field

The invention relates to a cover for contacting a functional element of a patient's bed, comprising means for rotatably and/or pivotably mounting the cover on a patient's 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 which is mounted on the base body in a pivoting and pivoting manner for access to the functional element.

Background

In the field of device construction, in particular in the field of medical engineering, two plastic half shells are often fixedly connected to one another, wherein it is often desirable for reasons of appearance or hygiene that no visible connecting elements, such as screw heads, are visible on both sides. It also happens that the components or electronic components are mounted in this housing consisting of two half-shells, which can be separated from one another later on, which is advantageous for maintenance and recycling.

Prior art for splicing half shells are, for example:

screwing by a self-tapping screw for plastics. The disadvantages are as follows: the bolts have to be assembled, which, in addition to the high cost of the material, also leads to long assembly times. The bolt head can be seen or has to be covered, which brings about a particularly disadvantageous appearance.

Positioning is effected by means of positioning hooks on one half-shell and corresponding positioning edges on the other half-shell. Disadvantages are the high costs in the injection mould due to the need for barbs and the need for accurate coordination. The splice connection is not particularly strong and is difficult to disassemble, since all hooks have to be pushed back at the same time, which may result in the hooks being easily broken. Furthermore, a gap is required for the hook connection to be contacted by a tool, which, in addition to an unfavorable appearance, also leads to insecurity, whether all hooks are already in place, i.e. leads to poor process safety.

A disadvantage of this type of fastening is the high material and assembly outlay and the possibility of re-releasing the connection by slight forces, which is undesirable.

The adhesion has drawbacks, requiring additional process steps, the connection is not detachable and has limited strength.

Ultrasonic welding is disadvantageous, requires additional, complex process steps, and the connection is not releasable. Furthermore, the weld seam deteriorates the appearance of the component.

Mirror welding is defective, requires additional, complex process steps, and the connection cannot be released. So-called weld flash may occur, which adversely affects the appearance.

Blow molding, double-shelled hot molding and rotary sintering are also cited as methods, and furthermore additive processes such as laser sintering are used to produce plastic hollow bodies. However, in these methods, the hollow body is produced in only one processing step, so that the component cannot be subsequently installed or can only be realized very restrictively by means of small openings.

Disclosure of Invention

The object of the invention is to overcome at least partially the disadvantages of covers of this type, which selectively allow or prevent access to functional elements of a hospital bed. The object of the invention is, in particular, to provide a two-part cover with an outer part and an inner part for contacting functional elements of a hospital bed, for example removable drawer elements, which meets the following requirements, in particular, for the connection between the two parts of the cover:

for good cleanability, no connecting elements are visible on the outer part and as few as possible on the inner part

Against deformation between the outer part and the inner part due to different temperature effects on the two parts, e.g. for use as a thermotherapy device

Overall obtaining a uniform narrow mosaic

Assembly noise (clicking) to avoid interference when heating the lid

Simple detachability of the connection between the outer part and the inner part for possible reworking during manufacture, maintenance and easy separation of the material during recycling of the component

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 the independent claim 1. This object is also achieved by a hospital bed with the features of the accompanying claim 12. Further features and details of the invention are given by the dependent claims, the description and the figures. The features and details described here in connection with the cover according to the invention are of course also applicable to the hospital bed according to the invention and vice versa, so that the disclosure of the various aspects of the invention is always cross-referenced.

According to a first aspect of the invention, this object is achieved by a cover for contacting a functional element of a patient's bed, comprising means for rotatably and/or pivotably mounting the cover on a patient's bed base. The cap is characterized in that the cap has an inner part and an outer part which is detachably fixed to the inner part. The outer part has a plurality of fastening means and the inner part has a plurality of mating fastening means which are formed in a matching manner with the fastening means of the outer part, wherein the fastening means are formed in such a way and are arranged on the outer part and the mating fastening means are formed in such a way and are arranged on the inner part, wherein a functional connection between the fastening means and the mating fastening means can be established 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, wherein the fastening means and the mating fastening means are arranged after the functional connection has been established inside a cover formed by the inner part and the outer part.

That is, the fastening means are configured and arranged on the outer part, and the mating fastening means are configured and arranged on the inner part such that they are arranged inside the cap or surrounded by the cap in the state in which the outer part is fastened to the inner part. In this case, the fastening means also include mating fastening means which are not arranged on the outer part or inner part at the edge regions thereof, but rather on the inner part of the outer part or inner part offset from the edge regions. This ensures that they are not visible on the one hand. On the other hand, the fastening means and the mating fastening means are therefore not easily accessible after the functional connection has been established. The outer part is thus fixed to the inner part by the inner fixing. The fastening is effected inside the assembled cover, whereby the outer part of the cover can be constructed simply, in particular smoothly, and is therefore easy to clean. Furthermore, there is no risk of scratching, since the fastening means and the mating fastening means are covered in the assembled state of the cover.

The outer part is provided with a plurality of fastening means and the inner part is provided with a plurality of mating fastening means which are matched to the fastening means of the outer part, thereby ensuring that the outer part is brought into functional connection between the fastening means and the mating fastening means at a plurality of different positions. The outer part is thereby firmly fitted on the inner part after the functional connection between the fastening means and the mating fastening means has been established. The fastening means are preferably designed such that, when the outer part and the inner part are heated differently, they can be moved in the direction of the pivot axis of the lid towards the mating fastening means, i.e. slide easily relative to one another, and thus no deformation occurs between the outer part and the inner part. The fastening means are preferably arranged distributed on the outer part and the mating fastening means are correspondingly arranged distributed on the inner part. It is particularly preferred that they are arranged in one or more rows, preferably at a defined distance from one another.

The fastening means and the mating fastening means are arranged distributed on the outer part or the inner part in such a way that, for fastening the outer part to the inner part, a functional connection between the fastening means and the mating fastening means can be established by means of a combined stroke/sliding movement of the outer part relative to the inner part. The fastening means and the mating fastening means are preferably aligned with one another during a stroke movement of the outer part relative to the inner part, so that they are brought into functional connection with one another in order to fasten the outer part to the inner part during the subsequent sliding movement.

A stroke movement in the sense of the present 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 a mating fastening means formed in a matching manner. I.e. the outer part is in contact with the inner part at the end of the stroke movement. This prevents further movement of the outer part in the direction of the inner part. A sliding movement in the sense of the present invention means that the outer part can slide along the inner part until the fastening means and the mating fastening means are brought into a fixed, but releasable functional connection with 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 between the fastening means and the mating fastening means during and at the end of the sliding movement is not visible from the outside, since this contact is realized inside the combined cover.

Such a cover also has the advantage that the outer side of the cover can be constructed simply and smoothly and can thus be cleaned very well. A plurality of fastening means and mating fastening means of matching design are provided, whereby a uniform circumferential narrow joining pattern between the outer part and the inner part can be achieved. The fastening means are moved relative to one another in the direction of the pivot axis of the cover, whereby it is also ensured that no deformations occur between the outer part and the inner part due to different temperature influences on the two parts. In addition, the movability of the fastening means and the mating fastening means of the mating fastening means can prevent disturbing assembly noises (rattling) from occurring when the lid is heated. The removability of the connection between the outer part and the inner part makes it possible in a simple manner to carry out reworking which may be required during production. Furthermore, a simple separation of the material during the recycling of the component can be achieved.

The outer part and the inner part are designed in particular such that, in the fastened state, they form a container with a hollow space between one another, in which the fastening means and the mating fastening means come into contact with one another. When the functional connection is established, the outer part and the inner part are engaged with each other in such a way that they cannot be separated from each other, in particular in the direction of the stroke movement. The outer part and the inner part are preferably functionally connected to each other in such a way that a sliding movement cannot be achieved without the application of force. In this case, the fastening means and the mating fastening means are additionally brought into a clamping connection with one another. The outer part can be moved relative to the inner part in the sliding movement direction only in the case of an applied opening force which is greater than the adhesive friction between the fastening means of the outer part and the mating fastening means of the inner part. In addition, the form-locking connection can be such that the fastening means of the outer part and the mating fastening means of the inner part form a functional connection with a mutual force-locking connection. In addition to clamping the fastening means and the mating fastening means to one another, they can also be brought into a locking connection with one another.

According to a preferred development of the invention, it can be provided in a cap that the inner part has a base, a circumferential wall and an opening, and that the outer part is designed as a cap to cover the opening of the inner part. If the caps are assembled together, i.e. the outer part is fixed to the inner part, the caps constitute a closed container. Preferably, both the outer part and the inner part are formed in an elongated manner, whereby the lid takes an elongated shape, similar to a lid of a drawer.

Preferably, the fastening means of the outer part has a plurality of fastening ribs projecting from the outer part base, wherein barbs are arranged on at least two fastening ribs, and the mating fastening means of the inner part has a plurality of mating fastening ribs projecting from the base and/or the circumferential wall, wherein L-shaped recesses are arranged on at least two mating fastening ribs for receiving the fastening ribs and the barbs thereof, respectively. The outer part preferably has a base body which has the shape of a cover, in particular a plate. The base body can be slightly curved or preferably flat. A protruding fixing rib is arranged on one side of the outer component base body. That is, the fixing rib is arranged on the side of the outer member that faces the inner member when the outer member is fixed to the inner member. Barbs are arranged on at least two of the fixing ribs, preferably on all fixing ribs. The barbs are preferably arranged at the free ends of the projecting fixing ribs, whereby the fixing ribs take a hook-like or L-shaped form. The mating fastening means of the inner part have a plurality of mating fastening ribs projecting from the base and/or the surrounding wall, wherein L-shaped recesses are arranged on at least two mating fastening means for receiving the fastening ribs and the barbs thereof in a form-fitting and force-fitting manner, respectively. The projecting mating fixing rib is preferably arranged on the bottom of the inner part and has a planar shape. In the case of the arrangement of the mating fastening ribs on the circumferential wall of the inner part, these are formed in a bent, in particular right-angled manner, so that their free ends project in the direction of the outer part. L-shaped recesses are arranged in each case on at least two mating fastening means, preferably on all mating fastening means, for receiving in each case one fastening web and its barb. These L-shaped recesses enable the fastening means of the outer part to be brought into a fixed, but releasable functional connection with the mating fastening means of the inner part at the end of the sliding movement.

A cover is particularly preferred, wherein each barb is at least partially curved, in particular has a lead-in chamfer on at least one side. This facilitates the sliding of the barbs into the respective L-shaped recesses during the sliding movement of the outer part relative to the inner part. The curvature of the barb is designed such that at the end of the sliding movement the thickest part of the barb comes into contact, preferably into frictional contact, with the wall of the respective L-shaped recess. This achieves a secure but releasable functional connection between the fastening rib and the mating fastening rib. Preferably, the barb is provided with a lead-in chamfer on both side faces for leading the barb into the L-shaped recess of the mating fastening rib.

According to a further preferred development of the invention, it can be provided in a cover that each L-shaped recess is formed so as to extend towards the end of the respective mating fixing rib on the end face side, in particular with a funnel-shaped lead-in chamfer. This ensures that the fastening means, in particular the fastening ribs, are correctly positioned in relation to the mating fastening means, in particular the mating fastening ribs, during the stroke movement of the outer part towards the inner part. In other words, the fastening ribs are introduced into the L-shaped recesses of the respectively associated counterpart fastening ribs by means of funnel-shaped introduction chamfers, as a result of which the outer part is automatically correctly centered toward the inner part. At the end of the stroke movement, the fastening ribs and the mating fastening ribs are aligned with one another in such a way that the outer part can move relative to the inner part only in 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 recesses of the respective L-shaped mating fixing ribs and thereby enter into a fixed but releasable functional connection.

In a cap, it can furthermore be provided that the fastening means of the outer part have positioning means and the mating fastening means of the inner part have mating positioning means which are designed and arranged on the outer part and the inner part, respectively, and which are detachably positioned with the mating positioning means when the functional connection between the fastening means and the mating fastening means is established. A cover of this design ensures that the outer part is held firmly on the inner part after the functional connection has been established in this position. The positioning means are positioned on the counter positioning means, whereby the outer part can no longer be moved in the sliding movement direction relative to the inner part. In particular, the positioning means or the counter-positioning means are preferably spring-elastic. During the sliding movement, one of the two positioning means is bent against the spring force and is thereby positioned on the other positioning means.

In a cover, it can therefore be provided that the mating detent means is spring-mounted and that on at least one projecting detent rib a ramp inclined toward the detent rib is arranged, by means of which the mating detent means is spring-mounted for the purpose of establishing a detent spring of the mating detent means on the detent means, or that the detent means is spring-mounted and that on at least one projecting mating detent rib a ramp inclined toward the mating detent rib is arranged, by means of which the detent means is spring-mounted for the purpose of establishing a detent spring of the detent means on the mating detent means. In other words, in order to ensure a secure connection or functional connection against loosening, a lateral displacement between the outer part and the inner part can be suppressed at the end of the joining process, i.e. at the end of the sliding movement. In this case, the counter-positioning means, which are formed in particular centrally on the inner part, are preferably designed as positioning tongues which, during the described joining process, are initially bent elastically upward in the sliding movement direction by means of web-shaped bevels on the outer part. When the sliding movement or lateral engagement movement of the outer part relative to the inner part is thus completed, the outer parts are positioned relative to each other in a defined position, and the mating positioning means, i.e. the positioning tongues, are lowered into the correspondingly formed positioning means, in particular the web recesses. As a result, the locking element is prevented from moving laterally, i.e. from sliding, and the outer part and the inner part are connected to one another in a manner that cannot be released for the first time. However, the cap is designed in such a way that the outer part can be detached again from the inner part. For this purpose, in a preferred lid, it is provided 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 mating fastening means. The opening is preferably of small design and is arranged on the inner or outer part in such a way that it cannot be easily seen by the user when the cover is supported on the patient bed base in a rotating and/or pivoting manner. The opening is preferably arranged in a wall of the inner part, which in the mounted state of the cover on the patient bed forms the bottom of the inner part. As an opening tool, for example, a straight pin or a fine hexagon socket wrench can be used. The opening is arranged in particular on the cover in such a way that the user can release the positioning means and the counter-positioning means by inserting an opening tool through the opening into the cover interior, in order to be able to effect a sliding movement of the outer part relative to the inner part. The opening tool can be inserted into the interior of the cover in particular in such a way that either the positioning means or the counter-positioning means are elastically deformed by a spring for releasing their mutual positioning.

According to a further preferred development of the invention, it can be provided in a cover that the inner part of the cover has a positioning means for holding the cover on the patient bed base with a defined force, a damping means for closing the cover on the patient bed base with low noise and/or at least one sealing element, for example a side flap hinge, for sealing the outer part on the inner part and/or at least one part adjacent to the patient bed base. The lid preferably has all three of the above-mentioned features. By means of the positioning mechanism, it is ensured that the cover is clamped with a defined force on the bed base body. Only by applying a defined force can the cover be rotated and/or pivoted relative to the bed base body, as a result of which functional elements of the bed, such as drawer elements, can be accessed or pulled out of the bed base body. The damping mechanism prevents the cover from generating noise when rotating or swinging in order to open and particularly to close the cover. At least one sealing element seals the outer part against the inner part and/or against at least one part adjacent to the bed base, for example a side flap hinge. The sealing element can prevent, for example, dirt or liquids from entering the cover. According to the invention, spring-elastic lateral slides can be formed on both sides of the cover as sealing elements, which serve to seal the gap next to the bed part. These sealing elements are notable in particular for the fact that these gaps are always kept as narrow as possible, irrespective of the thermal expansion of the cover or surrounding components. Heat losses in the oven can thereby be minimized, since the air gap is kept as small as possible.

In a lid, it can also be provided that the inner part has an air guide channel. Thereby, a circulation of hot air under the patient bed can be supported. The patient bed is in particular a thermotherapy device, preferably an incubator for neonates and infants.

According to a second aspect of the invention, the object is achieved by a hospital bed having a base body, a bed for a patient, functional elements arranged in or on the base body, for example, movably mounted drawer elements, and a cover mounted on the base body in a pivoting and/or pivoting manner for access to the functional elements. The cover is configured according to a first aspect of the invention, in particular according to any one of claims 1 to 11.

Thus, all the features and advantages described for the cover according to the first aspect of the invention are equally applicable to the hospital bed according to the second aspect of the invention.

The patient bed base body can be a frame which at least partially encloses the functional element. The cover is preferably mounted on the base body in a rotationally oscillating manner by means of pins arranged laterally on the cover or by means of through-shafts projecting toward both sides. The cover is fixed to the bed base body in the closed position with a defined force by means of a positioning mechanism. In the closed position the cover prevents access to the functional element. If the cover is pivoted with a defined force, it can be transferred into an open position in which the functional element can be accessed, for example an X-ray drawer can be moved relative to the bed base, in particular can be pulled out of the bed base.

Preferably a hospital bed, wherein the functional element has a drawer element, an X-ray drawer for accommodating an X-ray cassette and/or a lying surface. In the pulled-out state of the X-ray drawer, the X-ray cassette can be inserted into the X-ray drawer and then positioned below the bed floor by pushing the X-ray drawer in. Therefore, X-ray shooting can be completed without lifting the patient to the upper part of 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, the cover can also be designed and arranged on the patient bed in such a way that it releases or, respectively, inhibits an intervention on the active bed floor of the patient bed. It is also conceivable for the functional element to comprise not only an X-ray drawer for accommodating an X-ray cassette, but also a lying surface for the patient. In this case, the cover is dimensioned in such a way that it either releases or also prevents access not only to the X-ray drawer but also to the lying surface.

The patient bed is preferably a thermotherapy device, in particular an incubator.

Drawings

Further measures to improve the invention are given by the following description of an embodiment of the invention shown in the drawings. All the features and/or advantages, including structural details and spatial arrangements, which are given in the claims, the description and the drawings, may be essential aspects of the invention both individually and in various combinations. Components having the same function and operating principle are provided with the same reference symbols in the figures. Respectively and briefly show:

fig. 1 is a perspective view of a closed cover, which is used to access functional elements of a hospital bed,

figure 2 according to the open state of the lid of figure 1,

figure 3 is a perspective view of the outer part of the cap,

figure 4 is a perspective view of the inner part of the cap,

figure 5 the outer part during the stroke movement in the direction of the inner part of the cap,

figure 6 shows the outer part and the inner part according to figure 5 just before the end of the stroke movement,

figure 7 is a perspective view of the fastening mechanism of the outer piece and the mating fastening mechanism of the inner piece during the stroke movement of the outer piece in the direction of the inner piece,

figure 8 shows the fastening mechanism according to figure 7 and the counter-fastening mechanism just before the outer part has finished its stroke movement in the direction of the inner part,

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

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

figure 11 the fastening mechanism and the counter-fastening mechanism according to figure 7 during the sliding movement of the outer part in relation to the inner part,

figure 12 shows the fastening means and the counter-fastening means according to figure 7 at the end of the sliding movement of the outer part relative to the inner part,

fig. 13, the lid closed, the opening tool inserted inside the lid,

figure 14 the cap after opening the positioning of the outer part and the inner part by means of the opening tool,

figure 15 the fixing means according to figure 7 and the counter-fixing means during insertion of the opening tool,

figure 16 the fastening mechanism and the counter-fastening mechanism according to figure 7 after opening the positioning of the outer part and the inner part by means of the opening tool,

figure 17 a side view of the patient bed.

Detailed Description

Fig. 1 shows a perspective view of a closed cover 1 for providing access to a functional element 30 of a patient bed 40. The cap 1 is formed 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 the rotational or pivoting support of the cover 1 on the base body 41 of the patient bed 40, here in the shape of a shaft projecting to both sides. The inner part 3 has a container-like, in particular channel-like shape with a base 20 and a surrounding wall 21, see fig. 2. In the open state, the cover 1 is released from contact with the functional element 30 of the patient bed 40. The functional element 30, in particular an X-ray drawer, can thus be pulled out of the patient bed base 41, in particular a patient bed, in particular a thermotherapy device, for example an incubator. In the closed state, the cover 1 is in close contact with the functional element 30, so that this functional element cannot be accessed, in particular cannot be pulled out of the base body 41 of the patient bed 40. An X-ray cassette can be mounted on the drawer element 30 or in the X-ray drawer, so that X-rays can be emitted without lifting or moving the patient on the lying surface 42 of the patient bed 40. Such a patient bed 40 is schematically shown in fig. 17.

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

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

Fig. 3 shows a perspective view of the outer part 2 in a simplified manner. This outer part has the function of a cap for sealingly covering the opening 19 of the inner part 3. The outer part 2 is preferably designed as a plate of planar design. Both the outer part 2 and the inner part 3, which preferably comprise the fastening means and the mating fastening means, are preferably produced from a single injection-molded part. This makes it possible to save production costs in particular. On the side of the lid 1 facing the inner part 3 in the closed state, a number of fixing means 8 in the form of fixing ribs are arranged. The fixing ribs 8 project in particular perpendicularly from the side of the outer part 2. Lateral barbs 23 are arranged on the free ends of the fixing ribs 8, whereby the fixing ribs 8 assume a hook-shaped configuration.

On the two centrally arranged fastening ribs 8, "large" bevels 11 are arranged, which serve, when joining the outer part 2 to the inner part 3, to align the fastening ribs 8 with the mating fastening ribs 9 during the stroke movement of the outer part 2 towards the inner part 3, see fig. 4. The inner part 3 shown in fig. 4 has the shape of a hexahedron open on one side. The base 20 is surrounded laterally by a wall 21. From the inner part base 20, there projects a mating fastening rib 9 which is formed to match the outer part fastening rib 8. The mating fixing ribs 9 have L-shaped recesses 10 for receiving the fixing ribs 8, respectively, including the barbs 23 thereof. A mating fastening means 12 in the form of a spring-elastic latching tongue is arranged centrally on the base 20 of the inner part 3. The outer part 2 moves in a stroke movement in the direction a of the inner part 3 when joining the outer part 2 and the inner part 3, see fig. 5 and 6. The positioning tongues 12 are elastically bent upwards when joining the outer part 2 with the inner part 3.

After the end of the stroke movement in the direction a, the outer part 2 contacts the inner part 3. Subsequently, the outer part 2 slides relative to the inner part 3 in the sliding movement. This sliding movement is effected in the sliding direction B. Where the outer part 2 slides along relative to the inner part 3. Fig. 9 and 10 show the sliding movement in the sliding direction B. The sliding direction B is preferably perpendicular to the stroke direction a during the stroke movement of the outer part 2 relative to the inner part 3. If the lateral sliding movement ends so much in the sliding direction B that the outer part 2 and the inner part 3 are positioned centrally with respect to each other, the positioning tongues 12, which are elastically bent by the inclined surfaces 13 of the fixing ribs 8, drop into the matching counter-positioning means 14, which is designed here as a gap between two fixing ribs 8. This locks the lateral displacement of the outer part 2 on the inner part in the sliding direction B, and the outer part 2 and the inner part 3 are firmly connected to one another.

Fig. 7 and 8 show the stroke movement of the fastening ribs 8 of the outer part 2 in the stroke direction a, again enlarged, toward the mating fastening ribs 9 of the inner part 3. In order to make it possible to insert the fastening bead 8 easily into the L-shaped recess 10 in the mating fastening bead 9 of the inner part, the mating fastening bead 9 has a lead-in chamfer 10 a. Thereby facilitating assembly of the outer part 2 on the inner part 3. The "large" inclined surfaces 11 on the two fixing ribs 8 touch the mating fixing ribs 9 of the inner part 3 during the stroke movement in the stroke direction a and ensure that the outer part 2 is centered toward the inner part 3. The flanks of the barbs 23 of the fixing ribs 8 slide along the mating fixing ribs 9 during the stroke movement without touching them. The spring-elastic detent tongues of the inner part 3 are simultaneously bent upwards on the fastening web 8 by the inclined surfaces 13 during the stroke movement in the stroke direction a.

Fig. 11 and 12 show the sliding movement in the sliding direction B of the outer part 2 relative to the inner part 3. That is, after the stroke movement of the outer part in the stroke direction a toward the inner part 3 is completed, the outer part 2 is preferably moved in the slip direction B relative to the inner part 3 perpendicular to the stroke direction a. The barbs 23 of the holding ribs 8 slide into the L-shaped recesses 10 of the mating holding ribs 9. The barb 23 has a lead-in chamfer 8a for easy sliding-in. After the sliding movement in the sliding direction B has ended, the positioning tongue 12 is positioned in the positioning means 14, i.e. in a recess of the same size as the positioning tongue 12. The outer part 2 is thereby firmly fixed to the inner part 3, since the slip direction B is now interlocked.

The outer part 2 is fixed to the inner part 3 by means of a combined stroke/sliding movement of the outer part 2 relative to the inner part 3. In this case, a functional connection can be established between the fastening means 8,14 of the outer part 2 and the mating fastening means 9,10,12 of the inner part 3, wherein the fastening means 8,14 and the mating fastening means 9,10,12 are arranged after the functional connection has been established inside the cap 1 formed by the inner part 3 and the outer part 2. The barbs 23 of the fixing ribs 8 are arranged in the L-shaped recesses 10 of the mating fixing ribs 9 in a form-locking and/or force-locking manner for establishing a functional connection. The outer part 2 can move relative to the inner part 3 neither in the stroke direction a nor in the slip direction B.

In order to be able to subsequently separate the outer part 2 and the inner part 3 from each other, the inner part 3 has a small opening 15, here in the form of a hole, in a wall 21 on the bottom side of the inner part 3, see fig. 4. Through the holes 15 opening tools 16, thin straight pins or internal hexagonal wrenches or the like can be inserted from the outside, see fig. 15 and 16. The counter-positioning means 12, here the positioning tongue, can be bent upwards in the bending direction C by pressing by means of the opening tool 16 and held in this position. The stop rib 17 arranged on the bottom 20 of the inner part 3 forms a limit, so that the counter-locating means 12, here the locating tongue, is not overloaded.

The return bending of the detent tongues 12 prevents the locking of the sliding movement in the sliding direction B, so that the outer part 2 and the inner part 3 can again be moved relative to one another in the sliding direction B. The above-described joining process can be carried out in the reverse order after releasing the barbs 23 from the L-shaped indentations 10 in the mating fixing ribs 9, whereby the outer part 2 can be separated again from the inner part 3. This means that, after the outer part 2 has been released from the inner part 3, a sliding movement in the direction opposite to the sliding direction B is first effected, followed by a stroke movement in the direction opposite to the stroke direction a.

The cover 1 preferably has a plurality of hook-shaped or hooking ribs 8 as described above on the outer part 2 and L-shaped recesses 10 on the inner part 3 in the mating fastening ribs 9, which recesses are formed in a matching manner with the hooking ribs, and furthermore a mating positioning means 12, preferably a positioning tongue, which is arranged centrally on the inner part 3, has a positioning means 14, in particular a rib recess, on the outer part 2, which is matched to the mating positioning means.

The outer part 2 preferably has a number (twelve in the examples shown in fig. 3,5,6,9 and 10, for example twenty in the embodiment as an X-ray cover) of fixing ribs 8 arranged projecting on the outer part, with barbs 23, which are preferably distributed uniformly on the inner side of the outer part 2.

The inner part 3 is provided with projecting mating fixing ribs 9, which have a corresponding number of L-shaped indentations 10, which match the hooking ribs 8 of the outer part 2. The hook web has lateral lead-in chamfers 8a, and the L-shaped recess 10 likewise has lead-in chamfers 10a, so that the

components

2,3 can be easily fitted to one another.

When the outer part 2 and the inner part 3 are assembled, they move closer to each other by a lateral displacement (stroke direction a, displacement of about 10mm, displacement direction being arbitrary due to the preferred symmetrical configuration of the "hooking rib" 8). The hook 8 engages in the L-shaped recess 10. The two large ramps on the two hooking ribs on the outer part 2 help in finding the extent of displacement on which the two vertical mating fixing ribs 9 of the inner part 3 slide during the stroke movement in direction a.

Once the

parts

2,3 are in contact with each other, a lateral sliding movement B is effected as a second step until the outer part 2 and the inner part 3 are again centered with respect to each other, whereby the catch 8 engages in the L-shaped recess 10 and thereby forms a form-locking connection, the outer part and the

inner part

2,3 being simultaneously fixed together in all engagement positions in the direction of travel a.

In order to reliably prevent the functional connection established between the outer part 2 and the inner part 3 at the end of the stroke-slip movement from being released, it is necessary to suppress lateral displacements between the outer and

inner parts

2,3 at the end of the joining process. For this purpose, a positioning tongue 12 formed centrally on the inner part 3 is used, which is initially bent elastically upward in the stroke direction a by a rib-shaped bevel 13 on the outer part 2 during the described joining process. When the lateral sliding movement B is completed to such an extent that the

parts

2,3 are again positioned centrally relative to one another, the positioning tongues 12 drop into the associated positioning means 14, in particular in the form of web notches. This prevents a lateral displacement in the sliding direction B and thus connects the outer part to the

inner part

2,3 in a non-releasable manner.

An opening tool 16 can be inserted into the interior of the lid 1 through a small hole 15 in the bottom of the inner part 3 for the purpose of releasing the functional connection, in particular the positioning, again. That is, in order to be able to separate the outer part and the

inner part

2,3 from each other again, the positioning tongue 12 is bent upwards in the bending direction C by means of the opening tool 16 and is fixed in this position. As a result, the slip direction B is no longer blocked, so that the outer part and the

inner part

2,3 can again be moved laterally away from each other, and the

parts

2,3 can again be moved away from each other with opposite stroke movements.

Particular advantages of the cap 1 according to the invention are:

there are no visible connecting 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 simultaneously serve, for example, as a drainage opening for the penetrating liquid.

There are any number of connection locations between the outer and

inner parts

2, 3. The limitation is only achieved by the expense or cost of the tool construction (the barbs may be achieved by removing the core or resilient rod).

When it is known how to do so, the functional connection, which is form-locking and/or force-locking, can be easily released again. An opening tool for "opening" the functional connection is required. I.e. practically inaccessible to the user, but easily accessible for repair and maintenance.

-error compensation in the longitudinal direction between the outer and

inner parts

2,3 is achieved. The

components

2,3 are always positioned centrally relative to one another by the centrally arranged positioning tongues 12, independently of their actual longitudinal expansion. The horizontal "ribs" 8 are shaped to allow horizontal compensating movement of the outer and

inner parts

2,3 relative to each other.

Low cost, since no additional assembly material is required, and the

parts

2,3 can be joined to each other very simply and quickly.

Good assembly reliability is obtained because lateral engagement in the sliding direction B is forced, all engagement positions, i.e. the barbs 23, coming into engagement simultaneously inside the indentations 10. The positioning of the positioning tongues 12 gives a feedback of the sound when the final position is reached and thus serves to fix the functional connection of the outer part 2 on the inner part 3.

Fig. 17 shows a perspective view of a patient bed 40, which is designed as an incubator. The patient bed 40 has a base body 41 and a lying surface 42 for a patient, in particular a neonate. The cover 1 according to the invention is mounted on the base body 41 in a rotating and/or pivoting manner. Furthermore, a movably mounted functional element 30, in this case in the form of a drawer element, is arranged on the base body 41. The cover 1 is in this embodiment folded open, whereby the functional element 30 can be accessed and seen. I.e. the drawer element 30 can be pulled out of the bed 40 base 41. The drawer element 30 is preferably an X-ray drawer, in which the X-ray cassette can be inserted in the pulled-out state, whereby the X-ray cassette is arranged directly below the lying surface 42 in the pushed-in state of the X-ray drawer 30 and can receive X-rays by the patient when the patient is on the lying surface 42. The patient bed 40 also has a radiation heater 44, the radiation 45 of which is shown in brief. The patient bed 40 also has a cover for covering the bed 42. The cover 1 can be constructed as shown in fig. 1 to 16.

List of reference numerals

1 Cap/ray Cap

2 outer part

3 inner part

4 positioning mechanism

5 buffer mechanism

6 sealing element/spring-elastic lateral sliding block

7 air guide channel

8 fixing mechanism/fixing rib/hook rib

8a lead-in chamfer

9 paired fixing mechanism/paired fixing rib

10 mating securing mechanism/L-shaped notch

10a lead-in chamfer

11 inclined plane on the fixing rib

12 mating fixture/mating location facility

13 inclined plane

14 fixing mechanism/positioning facility

15 openings/holes

16 opening tool

17 stop rib

18 mechanism for supporting a radiation cover

19 inner part opening

20 bottom

21 wall body

22 outer component base body

23 barb

30 functional element/drawer element/ray drawer

40 hospital bed

41 sickbed base body

42 lying surface

43 cover

44 ray heating

45 optical path

Direction of stroke A

Direction of slip B

Bending direction of C-pair positioning facility

Claims

1. A cover (1) for contacting a functional element (30) of a patient bed (40), having a device (18) for rotatably and/or pivotably mounting the cover (1) on a base body (41) of the patient bed (40), characterized in that the cover (1) has an inner part (3) and an outer part (2) which is detachably fastened to the inner part (3), wherein the outer part (2) has a plurality of fastening means (8, 14) and the inner part (3) has a plurality of mating fastening means (9, 10, 12) which are formed in a manner matched to the fastening means (8, 14), wherein the fastening means (8, 14) are formed in this way and are arranged on the outer part (2) and the mating fastening means (9, 10, 12) are formed in this way and are arranged on the inner part (3), and for fastening the outer part (2) a combined stroke-slip movement of the outer part (2) relative to the inner part (3) can be established on the inner part (3) by means of the outer part (2) A functional connection which is established between the fastening means (8, 14) and the mating fastening means (9, 10, 12), wherein the fastening means (8, 14) and the mating fastening means (9, 10, 12) are arranged after the functional connection has been established inside a cover (1) which is formed by the inner part (3) and the outer part (2), a stroke movement meaning that the outer part can be moved towards the inner part, a sliding movement meaning that the outer part can be slid along the inner part, until the fastening means (8, 14) and the mating fastening means (9, 10, 12) are brought into functional connection with one another on the inner part (3) for fastening the outer part (2), the direction of the sliding movement differing from the direction of the stroke movement.

2. Cover (1) according to claim 1, characterized in that the fixing means (8, 14) and the mating fixing means (9, 10, 12) formed in a matching manner are designed to enter into a form-and/or force-fitting functional connection with each other.

3. A cap (1) according to claim 1 or 2, wherein the inner part (3) has a bottom (20), a surrounding wall (21) and an opening (19), and the outer part (2) is designed as a lid to cover the opening (19) of the inner part (3).

4. Cap (1) according to claim 1 or 2, wherein the fixing means (8, 14) of the outer part (2) have a plurality of fixing ribs (8) projecting from a base (22) of the outer part (2), wherein barbs (23) are arranged on the upper side of at least two fixing ribs (8), and wherein the counter-fixing means (9, 10, 12) of the inner part (3) have a plurality of counter-fixing ribs (9) projecting from the bottom (20) and/or the surrounding wall (21), wherein L-shaped indentations (10) are arranged on at least two counter-fixing ribs (9) for receiving the fixing ribs (8) and their barbs (23) respectively.

5. A cap (1) as claimed in claim 4, wherein each barb (23) is at least partially curved with a lead-in chamfer (8 a) on at least one side.

6. A closure (1) as claimed in claim 4, wherein each L-shaped recess (10) is formed so as to extend towards the end of the end face side of the respective mating fixing rib (9) and has a funnel-shaped lead-in chamfer (10 a).

7. Cap (1) according to claim 1 or 2, wherein the fixing means (8, 14) of the outer part (2) have positioning means (14) and the counter-fixing means (9, 10, 12) of the inner part (3) have counter-positioning means (12) which are configured and arranged on the outer part (2) and the inner part (3), respectively, said positioning means (14) being detachably positioned with the counter-positioning means (12) when establishing the functional connection between the fixing means (8, 14) and the counter-fixing means (10, 12).

8. Cover (1) according to claim 7, characterized in that the counter-positioning means (12) is spring-elastically designed and that on at least one protruding fixing rib (8) a ramp (13) is arranged which is inclined in relation to the fixing rib (8) and by means of which the counter-positioning means (12) is spring-elastically loaded in order to establish a positioning spring of the counter-positioning means (12) on the positioning means (14), or in that the positioning means (14) is spring-elastically designed and that on at least one protruding counter-fixing rib (9) a ramp is arranged which is inclined in relation to the counter-fixing rib (9) and by means of which the positioning means (14) is spring-elastically loaded in order to establish a positioning spring of the positioning means (14) on the counter-positioning means (12).

9. Cap (1) according to claim 1 or 2, characterized in that for releasing the functional connection between the fastening means (8, 14) and the counter-fastening means (9, 10, 12) the inner part (3) or the outer part (2) is provided with a hole (15) for inserting an opening tool (16).

10. Cover (1) according to claim 1 or 2, characterized in that the inner part (3) of the cover (1) has positioning means (4) for clamping the cover (1) with a defined force on the base (41) of the patient bed (40), damping means (5) for closing the cover (1) on the base (41) of the patient bed (40) with low noise and/or at least one sealing element (6) for sealing the outer part (2) on the inner part (3) and/or at least one part next to the base (41) of the patient bed (40).

11. A lid (1) according to claim 1 or 2, wherein the inner part (3) has an air guide channel (7).

12. Hospital bed (40) having a base body (41), a lying surface (42) for a patient, a functional element (30) arranged in or on the base body (41), and a cover (1) which is mounted on the base body (41) in a rotationally and/or pivotably manner for contacting the functional element (30), characterized in that the cover (1) is designed according to one of the preceding claims.

13. The hospital bed (40) according to claim 12, characterized in that the functional element (30) has a drawer element, an X-ray drawer for accommodating an X-ray cassette and/or a lying surface (42).

14. The hospital bed (40) according to claim 12 or 13, characterized in that the hospital bed (40) is a thermotherapy device.

15. The hospital bed (40) according to claim 14, characterized in that the thermo-therapeutic device is an incubator.