DE102008061799A1 - Stave for bed slatted base, molding process and subdivided slatted base for bedside - Google Patents

Abstract

Stave for bed slatted frame, molding method for the stave and subdivided slatted frame for hospital bed, wherein the stave obtained by blow molding of thermoplastic material is in one piece, with a top with raised plates with depressions therebetween in the manner of channels, and with a bottom with two projections, in the vicinity of the two heads of the stave, each projection having a first blocking recess for engaging a corresponding projecting pin along the inner profile of the frame of each section of the slatted frame, and between the edge of each of the two heads of the stave and the next projection one counter-shaped receptacle to rest on the frame is. Slatted bed base, wherein each section of the slatted frame comprises at least one blown molded dome which snaps into the frame.

Description

The The present invention relates to a stave for bed slatted base, a molding process and a sectional bed slatted especially for community facilities, such as hospitals.

field of use

The Innovation finds special, though not exclusive, Application in the field of technical equipment for Hospitals, clinics and spas, for long-term patients and retirement homes and in any case all the cases where it necessary, both convenient and therapeutic Bed for patients to dispose of that well and disassembled.

traditionally, Lying the patient requires positions by means of a can be obtained subdivided slatted frame.

Around To obtain these positions, one uses to use beds, which are equipped with a subdivided slatted base, in order to convert the Slatted frame of a shape that is initially flat in an ad hoc changed form with increased and / or inclined sections.

The traditional hospital bed is therefore known. In general It consists of a rigid frame, mostly of metal, with the at the ends a head end and a foot are connected. Almost all the beds that are currently in circulation are because they like seen to allow multiple positions of the patient, technical beds, that is, they must be accurate Meet requirements, mostly standard, the hospitals put.

Similarly Also known is the fact that the frame is structured differently can be to allow the movement of the slatted frame, on which the mattress is for the patient, such as from a flat starting position to another, since it can be opened is, by lifting one end over the other, or alternatively both, as needed and therapy of the patient.

State of the art

A traditional slatted frame for supporting the mattress, whether hospital beds or domestic use, extends over the whole area of the frame of the bed and consists of one or more substructures which are sometimes interconnected and elastically yielding. This is true of the traditional resilient metal mesh or curved transverse wooden staves, in which the ends of the mesh or staves are fixed to the edge either along the static frame of the bed or alternatively along the circumference of at least one second frame which is dynamic and cooperates with the first one , DE 4007570 (Voelker) is an example of this. These solutions have remained virtually unchanged for years, until recently, when those working in the field identified their absolute inappropriateness, mainly because they could not be effectively sterilized or disinfected.

Also known are the technical requirements of particular areas of the hospital sector, such as the departments of emergency and long-term care, where the bed, in contrast to the traditional beds, must be equipped with slats that can be modified in several levels in the flat form. In this case, so-called slatted frames with sections and joints, the sections are support levels for the mattress, divided into two to four mutually hinged floors, one of which corresponds to the head end and one the foot end, in the more or less long Version, as well as one or two middle ones referring to the pelvis. SE 449301 (Bergling) describes a coherent solution of a slatted frame with multiple sections and joints, in which each section consists of a platform which is movable by means of a series of joints. Also the US 4674140 (Boonants et al.) Proposes a subdivision of multiple sections and joints. Each section comprises a frame, to which transverse boards are connected, parallel and spaced from each other. Also in the CA 2312146 (Onorato) describes boards that are attached to a frame of an orthopedic bed, made of rigid material.

The traditional sections that characterized these slatted frames, each consist of a flat floor or a platform, thermoformed plastic and various sizes. When the flat floor is to be removed to be disinfected, it is simply placed on a corresponding metal frame which, being movable, acts as a support and is connected to the static structure of the bed according to known techniques. A second feature is due to the particular nature of the panels forming the subdivided flat floor, having a series of apertures for ventilating the mattress from bottom to top and vice versa, and a series of projections which allow the mattress to rest Keep slightly raised relative to the flat bottom. These arranged in parallel rows symmetrical projections alternate with the openings, as well as with longitudinal staves, in this case two, which divide the projections into three rows, so that zwi They create ventilation ducts, which are also elongated. See, for example, Applicant's long-term patient beds, published on the website www.favero.it , In the FR 2763489 (Zedda) describes a method for making hospital beds and hospital bed components, such as a platform or platform for connection to a rigid frame, generally of metal. These plaques may currently be full or hollowed out and are made by deep drawing of plastic such as the self-extinguishing ABS class VO / r2 in accordance with UL94 standards. In the FR 2763489 (Zedda) uses material such as PET, APET, CPET and PBT.

In the literature you can find the text "POLYMER PROCESSING AND STRUCTURE DEVELOPMENT" by N. Wilkinson and A. Ryan, edited by Kluwer, which describes the technique of "blow molding" is described, ie blow molding, of thermoplastic products.

• • eine durch Fließpressung oder Injektion erhaltene rohrförmige Vorform;
• • die Vorform wird bei einer kontrollierten Temperatur in eine thermostatisierte Gussform überführt;
• • die Vorform wird versiegelt, falls gewünscht, und aufgeblasen, bis sie die Gegenform der Gussform entspricht;
• • der Guss erfordert einen Innendruck, bis das Erstarrungsstadium des Produkts erreicht wird;
• • danach wird der Druck abgelassen und die Gussform für den Auswurf des Fertigprodukts geöffnet.

It essentially uses a wide range of polymers such as HDPE, PET u-PVC and PP. In principle, it requires the following phases:

• • a tubular preform obtained by extrusion or injection;
• • the preform is transferred to a thermostated mold at a controlled temperature;
• The preform is sealed, if desired, and inflated until it conforms to the counterform of the mold;
• • the casting requires an internal pressure until the solidification stage of the product is reached;
• • then the pressure is released and the mold is opened for the ejection of the finished product.

The Blow molding comes from the molding of glass bottles and is Currently widely used to make plastic bottles and containers in general, as well as in the field of automotive engineering.

• • ein Bett für Krankenhäuser mit untergliedertem Lattenrost;
• • ein Lattenrost für Krankenhausbett, in Abschnitte und Gelenke unterteilt, wobei jedem Abschnitt ein Flachboden oder eine Plattform entspricht, die voll oder geformt sein kann und mit Öffnungen ausgestattet ist;
• • ein Lattenrost für Krankenhausbett, bei dem jeder Abschnitt einen Rahmen zum Tragen von Brettchen oder Querdauben, parallel zueinander, umfasst;
• • das Material, aus dem jeder einzelne Flachboden, Plattform hergestellt wird, ist tiefziehbarer Kunststoff wie HDPE, PET u-PVC, PP, ABS.

One can therefore presuppose with justification and right as known:

• • a bed for hospitals with subdivision slatted frames;
• • a hospital bed slatted frame divided into sections and joints, each section corresponding to a flat floor or platform that may be solid or shaped and equipped with openings;
• A hospital bed slatted frame, each section comprising a frame for carrying boards or transverse staves parallel to each other;
• • the material from which each individual flat bottom, platform is made, is thermoformable plastic such as HDPE, PET u-PVC, PP, ABS.

disadvantage

Short and flush, the solutions used to this day in the opinion of the Applicant have some disadvantages. Especially These relate to the most widely used solutions on the slatted frame with several sections, each section with one appropriate platform or flat bottom. In this case everyone is Flat bottom or platform, relative to each section of the Slatted frame, too big, which in practice obvious transport difficulties at ordinary and extraordinary cleaning and at Disinfection and sterilization of the bed causes, as care during the removal and transportation of the parts of the treatment Slatted frame is required. All these difficulties make These works not only cumbersome, they can too an incorrect handling of the individual parts, with the appropriate risk, carriers for unwanted Being able to represent diseases.

One Disadvantage is that every single frame for its section requires an equally large platform In practice, each frame of a slatted frame corresponds to its own Platform, giving attention and experience in reassembly as well as complications in industrial manufacturing of the product, with consequent problems in the management of countless warehouse codes.

Of further one can notice that after conventional Type preserved platforms require local stiffening, by placing on the frame of each section as well as locally longitudinal beams fixed on which the individual platforms rest. The applied Solutions therefore considerably complicate the manufacturing phase of the bed and the platforms and contribute to an increase of Total weight, which does not facilitate the transport. Incidentally, the side members are structural as they are are not even permeable to X-rays, which also makes the radiodiagnosis very complicated.

at Platforms made according to traditional casting techniques be obtained, so injection or rotary thermoforming is no satisfactory finishing possible, so that one pronounced edges, with negative edges Impact on quality. They allow it in the Rotary technology either, self-extinguishing products to obtain the class VO.

Using conventional platform production techniques, situations occur when the process is low requires high investment costs, as in thermoforming techniques, or conversely, high investment costs and low product costs, such as injection molding. Finally, relative investment costs, but in practice significantly higher product costs, where the use of Rotationsgießverfahrens is provided. Therefore, it is not production with a balance between investment cost and final product cost.

After all, in terms of solution with at the frame of each corresponding Section attached staves, shows that they are mostly off Wood, so not fire retardant, and essentially so on the frame attached, that they are not removable. Therefore they are almost out of the woods Use, both because they can not be removed comfortably, as well, because they are made of wood and therefore not in the conventional Cycles of disinfection and sterilization of the slatted base appropriate can not be treated properly, at least not in accordance with the regulations.

It Therefore, there is a reasonable need, on the part of the Companies and those working in the industry, looking for innovative Solutions to search, and overall better quality than the previous one.

aim The present invention is also the above-mentioned To fix disadvantages.

Summary of the invention

This and other objects are achieved by the present invention according to the annexed claims resulting features, by solving the illustrated Problems by means of a stave for bed slatted, a molding process for the stave and a subdivided slatted frame for a hospital bed, which by blow or rotational molding technique obtained stave of thermoplastic material a one-piece body is, with an upper side with raised plates with Depressions in between like parallel channels and oriented at right angles to the longitudinal axis of the stave, and with a bottom with at least two protrusions over the surface of the page protrude, near the two Heads of the stave, each projection with a first blocking recess for the engagement of a corresponding projecting pin along the inner profile of the frame of each section of the slatted frame, and where, also at the bottom, between the edge of each of the two heads of the stave and the next projection there is a counter-shaped receptacle for resting on the frame. Slatted base for hospital bed, with each section of the slatted frame at least comprises a molded stave obtained by blow molding and which engages in the corresponding frame part.

aims

On this way, by the remarkable creative contribution, whose Be an immediate technical progress achieved different goals and advantages.

At first place because every section of the slatted base is made up of one or more slats is several staves of small size is the proper and extraordinary cleaning of the slatted frame more convenient for the operator, as well as disinfection and sterilization. In fact, the operator, even localized, can independently and easily remove and transport the staves, even if the place is cramped.

Secondly is the characteristic shape of the stave such that the stave is a modular element, so they, possibly with a second or more, contributes to the sealing of a section whose frame of the affected section in a slatted frame also of other size is considered the frame of the adjacent section.

moreover Gives the preparation of each stave that covers the sections of the slatted frame forms, with the blow molding or rotational molding technique, the stave and the slatted frame its own structural elasticity that the function The mattress can facilitate and feel perfect to adapt to the shape and load of the load.

Also From the qualitative point of view goals are achieved. Especially the blow molding or rotational molding technique leads to a product the stave, both in sight and in feeling like a full product works, so with a better visual impression, and at the same time improves the sense of touch during the treatment because of the absence of pronounced edges, so that the end result is soft shapes.

One Another goal is that each stave is self-supporting and to bear no side members required, which contributes to reduce the overall weight of the slatted frame and thus of the bed, and at the same time favoring radiodiagnosis.

After all A target refers to the production process of stave, over which you can justifiably claim because of blow molding that it leads to lower cost of the product, Similarly as with the injection molding, but unlike the conventional ones Costs for the latter, therefore with moderate investment costs.

These and other advantages that result in a product with good technological content are evident from the following detailed description of a preferred solution with the aid of the accompanying drawings schematic drawings whose execution details are not to be construed as limiting, but only as an example.

Content of the drawings

1 is a three-dimensional view of the stave, which is the subject of the present invention;

2 is a three-dimensional view and bottom view of the stave of 1 ;

3 is a floor plan of the stave from the previous figures;

four is a side view of the stave from the previous figures;

5 is a longitudinal section of the stave of 3 along axis AA;

6 is a view of the stave from the previous figures from above;

7 is a cross section of the stave of 3 along axis BB;

8th is a cross section of the stave of 3 along axis CC;

9 is an enlarged view of detail D;

10 is an enlarged view of detail E;

11 is a view of the stave from the previous figures from below;

12 is a side view of the stave from the previous figures;

13 is a cross section of the stave of 11 along axis FF;

14 is a bottom view of one of the sections that make up the subdivision slatted bed of the sickbed, the frame consisting of a frame and the associated staves.

Practical embodiment

With reference also to the figures, it will be seen that in a hospital bed, especially for the hospital sector, there is a slatted frame supporting the mattress or upholstery or padding part on which the patient lies. The hospital bed essentially comprises a main frame whose ends are connected to a head and a foot. Connected to the main frame is the slatted base, which may consist of a single section, or conversely subdivided into sections, in which case it consists of several sections 1 ( 14 ), also of different sizes, and multiple joints to vary the orientation and / or height.

Each section ( 1 ) ( 14 ) consists of a frame ( 10 ), which is substantially quadrangular, generally tubular, and transverse to the frame ( 10 ) one or more staves ( 20 ), are arranged parallel to each other, at a small distance, so that they are at least the region of the circumference of said frame ( 10 ) and also along two or more sides over the edge of the frame ( 10 ) can protrude. On two opposite parallel sides ( 101 . 102 ), the square frame ( 10 ) on the sides ( 103 . 104 ), which penetrate into the interior of the area of the frame ( 10 ), perpendicular reference rungs ( 11 ), in this case three for each page ( 101 . 102 ), which are equidistant and symmetrical to each other. The function of said sprouts ( 11 ), as in 14 illustrated, is the engagement of the stave concerned ( 20 ), with the help of the profile of the framework ( 10 ) to support the latter in a stable position and in a detachable manner.

Every stave ( 20 ) ( 1 and 2 ) is a one-piece molded body obtained by blow molding or in rotary technology, from thermoplastic material such as PP (polypropylene) or ABS (acrylonitrile-butadiene-styrene) with a shape of each stave ( 20 ) which is substantially rectangular in plan ( 3 ). The stave ( 20 ) consists of a middle section ( 200 ) and two heads ( 201 . 202 ), which are at the top ( 1 ) and lower side ( 2 ) and along the edge ( 203 ), which is rounded. The size of the stave ( 20 ), with respect to its xx longitudinal axis, is such that its length is greater than the width and greater than the axial distance between the parallel sides ( 101 . 102 ) of the frame ( 10 ) of the section ( 1 ), so that the headboards ( 201 . 202 ) the stave ( 20 ) to the outside and over the respective sides ( 101 . 102 ) of the frame ( 10 ) (see 14 ). It should be made clear that the term length of the stave ( 20 ) only on the stave ( 20 ) in the unassembled state, whereas if the stave ( 20 ) lying on the bed, so in the mounted state on the frame ( 10 ) of the section ( 1 ), it is width.

The top of every stave 20 ( 1 and 3 ) is formed with elevations and, in this case, designed to have at least two adjacent plates, for example four ( 210a . 210b . 210c . 210d ) which is formed by a depression formed like a rectilinear channel ( 211 ) perpendicular to the longitudinal axis xx of the stave ( 20 ) are connected to each other. Each plate ( 210a . 210b . 210c . 210d ) is also available with a central increase ( 212 ), elliptical in plan and almost coplanar with the elevations ( 212 ) of the adjacent panels. The heads ( 201 . 202 ) the stave ( 20 ) have a shape of the end plates ( 210a . 210d ), which diverges slightly upwards compared to the plates ( 210b . 210c ), which is the middle part ( 200 ) concern the stave, but retain a certain degree of complexity between the increases ( 212 ) at.

The bottom ( 2 and 11 ) the stave ( 20 ) is equipped with two projections ( 220 ), which are longitudinally oriented and projecting out of it, as they are pronounced, and are shaped so as to protrude over a depression (FIG. 221 ) whose vertical cavity has a deep-drawn U-shaped form ( 10 ), each in the direction of the corresponding head ( 201 . 202 ) the stave ( 20 ) is open, with a conical receiving opening ( 223 ). The position of the two projections ( 220 ) is between each middle part ( 200 ) the stave ( 20 ) and the respective head ( 201 . 202 ), so that in the mounted state on the corresponding cross section ( 1 ) every lead ( 220 ) within the scope of the framework ( 10 ), that is with the corresponding recess ( 221 ), which are behind the reference page ( 103 . 104 ) of the frame ( 10 ). In this way, the rung ( 11 ) of the frame ( 10 ) each page ( 101 . 102 ) into the corresponding depression ( 221 ) and is held in place by snapping, by two opposite swellings ( 222 ) ( 9 . 10 ) behind the widenings of the conical junction ( 223 ).

At the side of the heads ( 201 and 202 ), also at the bottom ( 2 ), on the basis of the projections ( 220 ), is a continuous rectilinear recording ( 230 ) compared to the cross-section of the profile of the frame ( 10 ) counter-shaped and at right angles to the longitudinal axis (xx) of the stave ( 20 ) is aligned. The center distance between the two continuous shots ( 230 ) is essentially consistent with the detectable center distance between the two sides ( 101 : 102 ) of the frame ( 10 ), so that when mounted stave ( 20 ) 14 ) to each of the continuous shots ( 230 ) the upper edge of the frame ( 10 ) is present.

Also at the bottom ( 11 - 13 ), the middle part ( 200 ) a longitudinal groove ( 240 ) with two blind holes ( 241 ) for the structural stiffening of the stave ( 20 ) on.

The edge of the stave ( 20 ) is substantially rounded, with depressions ( 250 ) on the long sides, which have the purpose of the stave ( 20 ) to stiffen even more and above all promote the ventilation of the mattress from bottom to top, together with the depressions ( 211 ), when the staves ( 20 ) as in the sealing of the section ( 1 ) are juxtaposed.

1

sections

10

frame

20

staves

101 102

opposing parallel pages

103 104

fronts

11

reference sprouts

200

midsection

201 202

heads

203

edge

210a, 210b, 210c, 210d

plates

211

depression

212

central increase

220

projections

221

deepening

222

opposite swellings

223

conical receiving opening

230

continuous Seat

240

longitudinal groove

241

blind holes

250

Wells.

QUOTES INCLUDE IN THE DESCRIPTION

This list The documents listed by the applicant have been automated generated and is solely for better information recorded by the reader. The list is not part of the German Patent or utility model application. The DPMA takes over no liability for any errors or omissions.

Cited patent literature

• - DE 4007570 [0007]
• - SE 449301 [0008]
• - US 4674140 [0008]
• - CA 2312146 [0008]
• FR 2763489 [0009, 0009]

Cited non-patent literature

• - www.favero.it [0009]
• - "POLYMER PROCESSING AND STRUCTURE DEVELOPMENT" by N. Wilkinson and A. Ryan, edited by Kluwer, which describes the technique of "blow molding" [0010]

Claims (10)

Stave ( 20 ) for bed slats, characterized in that it is one-piece and made of thermoplastic material, with a raised side shaped with elevations, and with a bottom with pronounced projections ( 220 ) near the two heads ( 201 . 202 ) the stave ( 20 ), each lead ( 220 ) with a blocking recess ( 221 ) in the framework ( 10 ) of the bed slatted, and wherein, also at the bottom, between the edge ( 203 ) each of the two heads ( 201 . 202 ) the stave ( 20 ) and the respective next projection ( 220 ) a recording ( 230 ) is located. Molding process for the stave ( 20 ), according to claim 1, characterized in that it is obtained by blow molding or "blow molding" of thermoplastic material. Slatted bed for hospital bed with at least one stave ( 20 ) according to claims 1 and 2, characterized in that the slatted frame consists of several sections ( 1 ) with associated joints, each section having a frame ( 10 ), across the frame ( 10 ) one or more staves ( 20 ) are mounted, arranged parallel to each other, at a small distance, so that they at least the area of the circumference of the frame ( 10 ) cover. Stave ( 20 ) for bed slatted base according to the preceding claims, characterized in that it consists of a central part ( 200 ) and two heads ( 201 . 202 ), the dimensions of the stave ( 20 ) with respect to their longitudinal axis xx, so that their length is greater than the width and greater than the axial distance between the parallel sides ( 101 : 102 ) of the frame ( 10 ) of the section ( 1 ), so that the head parts ( 201 . 202 ) the stave ( 20 ) to the outside and over the respective sides ( 101 . 102 ) of the frame ( 10 ). Stave ( 20 ) for bed slatted according to the previous claims, characterized in that the underside of the stave ( 20 ) with pronounced projections ( 220 ), each with one in the direction of the corresponding head ( 201 . 202 ) the stave ( 20 ) open depression ( 221 ), and with a receiving opening ( 223 ); the position of each projection ( 220 ) between the middle part ( 200 ) the stave ( 20 ) and the respective head ( 201 . 202 ), so that in the assembled state on the corresponding section ( 1 ) every lead ( 220 ) within the scope of the framework ( 10 ), with the corresponding recess ( 221 ), which points (sic) and behind the reference page ( 103 . 104 ) of the frame ( 10 ). Stave ( 20 ) for bed slatted according to the preceding claims, characterized in that the top of each stave ( 20 ) is formed with elevations and designed to provide at least two adjacent plates, ( 210a . 210b . 210c . 210d ) connected to one another by a depression shaped like a rectilinear channel ( 211 ) perpendicular to the longitudinal axis (xx) of the stave ( 20 ) is aligned; the heads ( 201 . 202 ) the stave ( 20 ) have end plates ( 210a . 210d ), which diverge slightly upwards compared to the plates ( 210b . 210c ), which is the middle part ( 200 ) concern the stave. Stave ( 20 ) for bed slatted base according to the preceding claims, characterized in that the middle part ( 200 ) a longitudinal groove ( 240 ) with two blind holes ( 241 ) for the structural stiffening of the stave ( 20 ) having. Subdivided bed slatted frame with stave ( 20 ) according to the preceding claims, characterized in that on two opposite parallel sides ( 101 . 102 ) of the quadrilateral frame ( 10 ) on the sides ( 103 . 104 ), which penetrate into the interior of the area of the frame ( 10 ), reference rungs ( 11 ) protrude perpendicularly, equidistant and symmetrical to each other; said reference rungs ( 11 ) get inside the cavities ( 221 ) the stave ( 20 ) introduced. Subdivided bed slatted frame with stave ( 20 ) according to the preceding claims, characterized in that the shoots ( 11 ) of the frame ( 10 ) from each page ( 101 . 102 ), when in the corresponding depression ( 221 ) is inserted in it by snapping two opposite swellings ( 222 ) behind the conical receptacle ( 223 ). Subdivided bed slatted frame with stave ( 20 ) according to the preceding claims, characterized in that on the side of the heads ( 201 . 202 ), at the bottom, on the basis of the projections ( 220 ), a continuous rectilinear recording ( 230 ) corresponding to the cross-section of the profile of the frame ( 10 ) counter-shaped and at right angles to the longitudinal axis xx of the stave ( 20 ), and wherein the center distance between the two continuous shots ( 230 ) essentially with the detectable center distance between the two sides ( 101 . 102 ) of the frame ( 10 ), so that when mounted stave ( 20 ), to each of the continuous shots ( 230 ) the upper edge of the frame ( 10 ) is present.