EP2662650A2 - Refrigeration and/or freezer device - Google Patents

Abstract

The refrigeration or freezing device comprises a fixed element and a movable element made of metal or plastic, where the fixed element is fixed to a body portion of the device. The movable element is displaceable relative to the fixed element. The fixed element has a sliding portion (200), which comprises a sliding area made of plastic and stands in direct contact with the movable element. The sliding portion slides along relative to the movable element upon actuation of the pull-out system. The fixed element forms the fixing of the movable element at the body portion.

Description

The present invention relates to a refrigerator and / or freezer with at least one pull-out system comprising at least one fixed and at least one movable member, wherein the fixed member is fixed to a body part of the device and wherein the movable member is displaceable relative to the fixed member ,

From the prior art it is known to equip refrigerators in their interior with telescopic rails, which have a fixed rail and a relative thereto arranged displaceably rail, which are movable by balls relative to each other. These telescopic rails ensure easy running and precise guidance. A disadvantage of these systems is that they are expensive and expensive due to their comparatively many accurately fitting items. In known telescopic rails, both the fixed rail and the movable rail made of metal, so that an attachment to the inner container only with a certain overhead in the form of additional parts is possible.

Other disadvantages of known telescopic rails are that they can give off disturbing noises during their movement, which can be amplified, for example, via the drawer body, and that they can not be completely corrosion-resistant coated without disadvantages.

The present invention is therefore the object of developing a refrigerator and / or freezer of the type mentioned in such a way that its extension system has a simple structure.

This object is achieved by a refrigerator and / or freezer with the features of claim 1.

Thereafter, it is provided that the fixed member is formed by at least one sliding member or at least a sliding member having at least one sliding portion with which the movable member is in contact and relative to which slides the movable member in the operation of the extension system along. In addition, it is provided that the fixed element forms the fixation of the movable element.

The invention is thus based on the idea that the fixed element is formed by at least one sliding part on which the movable element of the extension system is in direct contact at least in sections and slides along it. The movable element thus slides at least partially directly on the surface or surface areas of the stationary element. Due to the fact that the fixed element additionally serves as a fastening part, by means of which the entire extension system, for example, is fastened to the inner container and thus can be dispensed with separate fasteners, the overall result is a comparatively simple constructed Auszugssytem that is easy to assemble.

By means of the present invention, it is possible to reduce the number of parts and thus the production costs in comparison to the known telescopic rails, to improve or to eliminate the noise situation and the susceptibility to corrosion.

Due to the fact that it is possible to dispense with fastening parts and / or ball bearings, a particularly compact and space-saving design of the extension system results.

In a preferred embodiment of the invention, the installation space or attachment to the inner container of the refrigerator and / or freezer of the extension system according to the invention is identical to the known systems partial extract or full extension in the respective variants ball bearing guide, roller bearing guide and with and without self-closing / damping etc. Preferably, the assembly of the different telescopic rail systems according to the present invention and systems known from the prior art (eg ball cage design) is identical. Preferably, one and the same inner container can thus be used for different extension systems.

The extract of the device according to the invention can be designed as a full extension or as a partial extract.

It is also advantageous if always the same shelf or the container such. B. a drawer can be used on the different extension systems including the telescopic rail system according to the invention. This allows a universal use of trays, drawers and the like.

As already stated above, it is known from the prior art to store shelves, such as shelves, drawers or the like in a variety of temperature storage areas with different humidities in the interior and the associated applications such as Biofresh, wine storage, etc. for handling reasons on telescopic extensions , As stated further above, the attachment of these telescopic extensions takes place doing so by means of separate fasteners, which is associated with the disadvantages described above. In the present drawer system, an advantageous embodiment is that is dispensed with such fasteners and that the attachment of the drawer system takes place on the body or on the inner container by the fixed element.

In a preferred embodiment, the fixed element and in particular its sliding region on which the movable part is arranged movable, made of plastic or plastic. Preferably, this sliding part z. B. from POM (polyoxymethylene or polyacetal or polyformaldehyde) or has POM on.

Due to the fact that the fixed rail part serves at the same time for fastening the entire telescopic rail system according to the present invention, results in a little expensive and beyond simple attachment z. B. on the inner container. The attachment can be made exclusively or by the solid element.

In a preferred embodiment of the invention, the fixed element is a plastic injection-molded part, which has the advantage that the connection or attachment geometry to the inner container side wall or other body wall to which the extract is to be attached, carried out accordingly can. Ideally, an assembly of the different telescopic rail systems, as known for example from the prior art and according to the present invention at the same, i. Equally formed inner container wall, preferably on the side wall possible. This brings with it the advantage that one and the same device or type of inner container can be designed with different telescopic rail systems.

In a preferred embodiment omitted in the present invention over a telescopic rail system with ball bearing guide the ball cage, the balls and preferably also the grease lubrication and the customary for Teleskopschienenendmontage riveting. It is conceivable, instead of riveting z. B. a locking between the movable guide rail or the movable member and the sliding attachment part, or the fixed element possible. This latching can be formed, for example, by a recess in the movable element and by a latching lug in the fixed element or vice versa.

The fixed element and / or the movable element can be formed by rails or rail-like components.

It is conceivable, said locking connection when needed, for. B. to solve for cleaning purposes.

In the case of telescopic rail systems known from the prior art, a powder coating is used for use in the cooling interior for the purpose of the required corrosion resistance, for example against fruit acid and for optical reasons. So that a rail smooth running is guaranteed without abrasion, this powder coating is so far four times recessed in the ball raceways at a cost.

Due to the sliding pair according to the invention, this recess can now be omitted and corrosion in the ball raceway is no longer possible if appropriate materials are used.

In addition, the overall visual impression of the system can be improved.

The movable element, which is preferably designed as a movable guide rail, is usually due to the required high load capacity of steel or other metal or has at least steel or other metal. The advantage here is that the movable guide rail or the movable element is not like a ball-bearing telescopic rail system must be precisely matched with the fixed guide rail or with the fixed element and the balls, but can be largely designed according to the requirements in the dimensions.

It is conceivable to use the guide rail, i. to carry out the movable element made of metal and / or plastic.

In a preferred embodiment of the invention, the cross-sectional geometry of the movable element or the guide rail is chosen in conjunction with the fixed element or with the fixed sliding fastener so that the sliding friction or clamping forces remains minimal even in case of a partial distortion.

In a further embodiment of the invention it is provided that the fixed element is in communication with the inner container of the device and is preferably inserted into a recess of the inner container or is also placed on a projection of the inner container.

Mounting of the fixed element can be done on the inner container side wall or on another wall of the inner container.

In a preferred embodiment of the invention, it is provided that the stationary element is connected by positive engagement and / or by frictional connection with the inner container. In this way it is possible, for example, to perform the fixed element so that it can be used with an area in a recess of the inner container and therein z. B. is fixed by positive engagement and / or adhesion and / or material bond. In this case, the fixed element must be inserted or pressed only in said recess of the inner container. Further assembly steps on the inner container or body side are then no longer necessary.

In a next step, only the movable element or the movable guide rail is then placed on the stationary element or on the fixed guide rail.

The connection between the two elements is preferably designed such that the movable element is fixed in all directions except for the pull-out and insertion direction by positive engagement with the stationary element. This means that a movement of the movable element is possible only in the extension and insertion direction of the movable element or the telescopic extension. All other directions of movement are prevented by positive locking.

The present invention is not limited to that only a sliding movement of the two elements takes place to each other. Depending on the load requirement of the telescopic rail system according to the present invention, it is also conceivable to provide the system additionally with at least one roller or the like. Thus, it is conceivable, for example, to support one or more rollers on the stationary sliding fastening part (eg front and top) and / or on the movable element or on the movable guide rail (eg rear / bottom).

Alternatively or additionally, especially suitable sliding material could be applied to the particularly stressed sliding surfaces, for example a sliding part or a sliding foil or a sliding material applied by a 2-K injection molding process or by a coating.

In a further embodiment of the present invention, it is provided that the telescopic rail system according to the invention has end stops on both sides. End stops are known from the prior art in the form of buffer parts which damp or avoid impact noises in known telescopic rail systems. According to the invention, it is now possible to reduce these impact noises without buffer parts or to prevent, since the material pairing of the movable element such. B. steel for the movable guide rail, and the fixed Element, such as plastic for the fixed sliding attachment part has a positive effect on the noise. This can additionally serve a corresponding geometry in the attack area.

The movable element may comprise at least one sliding element which is arranged such that it slides on the sliding part during the actuation of the extension system.

This sliding element can be connected to a pull-out rail in such a way that the pull-out rail and the sliding element are moved together during insertion and removal. It is conceivable that the sliding element and the pull-out rail are locked together.

Said sliding member is preferably in direct communication with and slides on the slider when the drawer is inserted and withdrawn. Preferably, the sliding element forms the stop for the movable element by abutting the fixed element in the end positions.

Furthermore, it can be provided that the sliding element has at least one hold-down for a drawer. In this way it is ensured that the drawer is reliably fixed to the movable element.

The sliding element may be designed in such a way that it can be mounted on the sliding part by means of a pivoting movement and / or can be disassembled therefrom. Preferably, a tool-free assembly and disassembly of the slider on or from the slider is possible.

In a further embodiment of the present invention is connected to the movable element at least one storage element, such as a floor, a drawer or the like or placed on this. Preferably, no role or no rollers or guide rails are attached to this storage element. This has the advantage, especially with transparent parts, that the appearance is improved accordingly. The risk of breakage is reduced compared to known solutions and increases the ease of cleaning. Apart from that, the handling in the removal and also at the onset of the storage element is simply possible, since it only needs to be placed on the movable element and possibly fixed with this by a positive connection or by a locking connection or the like.

Other advantages of the present invention are that movement noises, which are caused in known systems by the rolling of the balls between the outer and inner rail and possibly reinforced by the drawer structure-borne noise despite grease lubrication, now be reduced or prevented by the elimination of the rolling noise can.

On a grease lubrication can be omitted in a preferred embodiment of the invention in the telescopic rail system according to the invention in the use of appropriately suitable, lubricious materials. Further advantages of the invention are that the telescopic rail system according to the invention, including its fastener for food may have approved materials and may also consist of odorless materials.

The telescopic rail system according to the invention is conceivable both as a partial and as a full extension. It has at least one movable element, which is designed to be displaceable relative to at least one immovable element. The invention also encompasses that at least one further element movable relative to this element is provided on the said movable element, so that a further extension is possible. The relative movement of the two movable elements to each other according to the invention can be achieved exclusively or by a sliding guide according to the invention or in other ways.

Figur 1:

unterschiedliche Ansichten des erfindungsgemäßen Auszugssystems vor und nach der Montage am Innenbehälter,

Figur 2 - 5:

Ansichten unterschiedlicher Ausführungen des Gleitteils sowie der Führungsschiene,

Figur 6:

eine Darstellung der Rastverbindung zwischen Gleitteil und Führungsschiene,

Figur 7:

eine vergrößerte perspektivische Darstellung des Gleitteils mit speziellen Gleitwerkstoffen,

Figur 8:

unterschiedliche perspektivische und Schnittansichten des Auszugssystems,

Figur 9:

eine Explosionsdarstellung des Auszugssystems gemäß Figur 8,

Figur 10:

unterschiedliche Ansichten der an dem feststehenden Element angeordneten Rolle,

Figur 11:

unterschiedliche Ansichten des Gleitelementes im demontierten und montierten Zustand und während des Montagevorgangs und

Figur 12:

eine aus dem Stand der Technik bekannte Ausführung eines Teleskopschienensystems.

Further details and advantages of the invention will be explained in more detail with reference to an embodiment described in the drawing. Show it:

FIG. 1:

different views of the extension system according to the invention before and after mounting on the inner container,

FIGS. 2 to 5:

Views of different versions of the sliding part and the guide rail,

FIG. 6:

a representation of the locking connection between the sliding part and the guide rail,

FIG. 7:

an enlarged perspective view of the sliding part with special sliding materials,

FIG. 8:

different perspective and sectional views of the extension system,

FIG. 9:

an exploded view of the extension system according to FIG. 8 .

FIG. 10:

different views of the roller arranged on the stationary element,

FIG. 11:

different views of the slider in the disassembled and assembled state and during the assembly process and

FIG. 12:

a known from the prior art embodiment of a telescopic rail system.

In FIG. 1 is shown in the left-hand illustration by the reference numeral 100, the inner container of a refrigerator and / or freezer, which has in its side wall a pocket-shaped and longitudinally from front to rear extending recess 110.

With the reference numeral 200, the sliding member is shown, which constitutes the fixed member according to the invention and having a fixing portion 210 and a guide portion 220. With the attachment portion 210, the slider 200 is inserted into the recess 110 of the inner container 100, as is apparent from FIG. 1 , right hand representation is visible. There it is held by positive engagement, such as by an undercut of the pocket-shaped recess 110, so that it can be removed again only under pressure in a direction perpendicular to the surface of the inner container wall.

On the guide portion 220, the guide rail 300 runs. This has two mutually facing legs 310 which engage around a portion 230 of the slider 200 and their end portions in the guide portion 220 run so that the guide rail 300 engages around this portion 230, as in particular FIG. 1 , right-hand illustration, can be seen.

The guide rail 300 is made of metal, for example, the sliding member 200 is preferably made of a plastic part, which is made for example of POM.

Like this FIG. 1 , right representation, shows, the structure of the entire extension system is relatively simple. It only requires the use of the sliding member 200 in the recess 110 of the inner container 100 and the pushing or placing the guide rail 300 on the guide portion 220 of the slider 200th

The reference numeral 400 is in FIG. 1 , Right view, a drawer shown, the leg 410 has on both sides, which rests for example by positive engagement or adhesion on the top of the mutual guide rails 300.

Like this further FIG. 1 shows, is located between the mounting portion 210 and the guide portion 220 of the slider 200, a circumferential web-shaped flange 240, with which the sliding part covers the recess 110 of the inner container in its assembled state.

FIG. 2 shows by the reference numeral 200 again another perspective view of the sliding member and by the reference numeral 200 and 300, the combination of mounted on the slide member 200 guide rail 300, which forms the movable member. The guide rail 300 is slidable along the guide portion 220 and slides on this guide portion 220.

The relative movement between the guide rail 300 and the slider 200 may be based solely on a sliding movement of the guide rail 300 relative to the slider 200. In addition, it can be provided that in special load situations, the sliding part has a roller on which rolls in the assembled state, a portion of the guide rail 300. Like this FIG. 3 Preferably, this roller 280 is located in the front, upper region of the sliding part 200. On this roller 280, the guide rail is moved, the guide rail in other areas, which are not arranged in the region of the roller on the surface of the sliding member 200 slides.

Alternatively, or in addition to this role, which rolls in the direction of movement of the guide rail 300, it is conceivable to arrange one or more rollers on the guide rail 300, as is apparent from FIG. 4 evident. In this figure, reference numeral 380 denotes a roller located at the rear lower portion of the guide rail.

Out FIG. 4 is further seen that on the slide member 200, a projection 290 is located, which serves as a latching nose, which cooperates with a recess 390 in the guide rail. This locking prevents accidental release of the two parts from each other. Preferably, it is designed such that it can be detached, for example, for cleaning purposes or the like if necessary. The roller 380 of the guide rail 300 serves to additionally support the guide rail, for example on the sliding part or a further component of the refrigerator or freezer, such as on an inner container rib. Alternatively or additionally, it may be provided that the sliding part 200 and the guide rail 300 are designed such that the roller 380 rolls on a partial section of the sliding part 200.

FIG. 5 shows an embodiment in which both the slider 200 has a roller 280 and the guide rail 300, which is designed with a roller 380, which rolls in the direction of movement of the guide rail.

FIG. 6 shows in an enlarged view the front region of the sliding part 200 and shows the arrangement of the locking tab 290 and in the right representation of the rear portion of the guide rail 300. In this figure it can be seen that in the extended state of the guide rail 300, the locking tab 290 in the recess 390th the guide rail 300 engages and thus prevents further relative movement.

In FIG. 7 a further perspective view of the sliding part 200 is shown. In this case, the sliding member on the dark marked surfaces F with special sliding materials, such as with a special coating, etc. executed. These are the particularly stressed sliding surfaces. This embodiment serves to increase the durability of the slider 200. These ranges are in FIG. 7 marked with the reference symbol F. On the one hand, they are formed by the upper side of the guide section 220 and on the other hand by the end faces of the section 230 facing the interior of the inner container, as is apparent from FIG FIG. 7 evident.

FIG. 8a shows the slider 200 with a arranged in its front portion roller 280 on which the guide rail 300 rolls. In the rear portion, the guide rail 300 is locked with the slider 500 sliding on the slider 200 when the drawer is operated. The guide rail 300 Thus, with its rear portion is not in direct contact with the sliding member 200, but only indirectly and via the slider 500th

FIG. 8b shows the arrangement in which the movable member, ie, the guide rail 300 and sliding member 500 are mounted on the fixed member, ie on the sliding member 200 with the roller 280.

The FIGS. 8c and FIG. 8d show sectional views of the details X and Y in FIG FIG. 8b and illustrate that the guide rail 300 on the one hand rolls on the roller 280 and on the other hand is not directly, but by means of the sliding member 500 with the sliding member 200 in conjunction.

FIG. 9 shows the assembly process of the extension system: First, the roller 280 is fixed with its bearing pin 281 on the slider 200. The fixation can be done, for example, by positive locking, material connection, press-fitting, riveting, screwing, latching, etc.

Subsequently, directly behind the roller 280 at an angle of 5 ° to 10 °, ie obliquely, the slider 500 is placed on the slider 200 and on the guide groove and then locked by a pivoting movement with this. Then, the sliding member 500 is displaced by a sliding movement to the end portion of the slider 200 shown on the right. The end position is in FIG. 9 provided with the reference numeral 600.

Subsequently, the guide rail 300, which may for example be designed as a sheet metal profile rail, starting from the front side pushed over the roller 280 and that until it locks with the sliding member 500.

FIG. 10a shows in perspective view the roller 280 and FIG. 10b shows a sectional view. The circled area indicates the position in which the bearing pin 281 is locked to the slider 200 or otherwise connected.

The roller 280 and the bearing bolts 281 may be designed as a common part or also in several parts.

Out FIG. 11a is a perspective view of the slider 500 can be seen. How out FIG. 11b can be seen, the sliding member 500 is located in the end of the guide rail 300 formed as a profile part.

The reference numeral 1 indicate the insertion and the pull-out stop and the reference numeral 2, the locking element with which the slider 500 is locked to the guide rail 300. The guide rail has for this purpose a recess or a projection with which the latching element 2 is latched.

By the reference numeral 3, the guide elements of the sliding element 500 are marked, with which this slides on the sliding member 200 along. The reference numeral 4 indicates the hold-down of the slider 500, which fixes the drawer 400 relative to the slider 500 and the guide rail 300.

FIG. 11c shows that the slider 500 is first obliquely (at an acute angle) attached to the slider 200 and then pivoted to the slider 200, so that the in FIG. 11d shown position is reached. Disassembly of the roller 280 is not required. Then, the slider 500 is pushed into the rear end of the slider 200.

FIG. 12 shows an embodiment known from the prior art. In this embodiment, a fastening part 1000 is provided specifically, which is to be fastened to the inner container 100. At this attachment part 1000 of the telescopic extension 1100 consisting of an inner profile, that is a fixed rail, balls and cage and an outer profile, that is, a movable rail attached. Reference numeral 400 denotes a drawer communicating with the movable rail.

According to the present invention can be dispensed with a separate fastening part 1000 and the ball bearing and or on the ball cage, resulting in the advantages described above.

Claims (13)

Refrigerating and / or freezing appliance with at least one pull-out system comprising at least one fixed element and at least one movable element, wherein the fixed element is fixed to a body part of the device and wherein the movable element is displaceable relative to the fixed element, characterized in that the fixed element is formed by at least one sliding part or comprises at least one sliding part which has at least one sliding area with which the movable element directly contacts and relative to which the movable element slides during the actuation of the extension system, and the fixed one Element forms the fixation of the movable element on the body part. Cooling and / or freezing appliance according to claim 1, characterized in that the fixed element and in particular the sliding region consists of plastic or plastic. The refrigerator and / or freezer according to claim 1 or 2, characterized in that it is the stationary element is a plastic injection molded part and / or that the fixed element consists partially or completely of POM or has POM. Cooling and / or freezing appliance according to one of the preceding claims, characterized in that the movable element consists of metal and / or plastic or comprises and / or that the movable element is formed one or more parts. The refrigerator and / or freezer according to any one of the preceding claims, characterized in that it is in the body part to the inner container, that the fixed member is in communication with the inner container of the device and preferably inserted into a recess of the inner container or on a projection the inner container is placed. Cooling and / or freezing appliance according to claim 5, characterized in that the stationary element is connected by positive engagement and / or by adhesion to the inner container in connection. Refrigerating and / or freezing appliance according to one of the preceding claims, characterized in that the movable element is positively connected to the stationary element in such a way that the movable element in all directions except the pull-out and insertion direction of the movable element by positive engagement with the fixed Element is fixed. Cooling and / or freezing appliance according to one of the preceding claims, characterized in that the movable element and / or the stationary element have at least one roller by means of which the movable element rolls on the stationary element and / or on a further component of the device. Cooling and / or freezing appliance according to one of the preceding claims, characterized in that the movable element and the fixed element are latched together in at least one position of the extension system. The refrigerator and / or freezer according to any one of the preceding claims, characterized in that the movable element comprises at least one sliding element, which is arranged so that it slides on the sliding part during the actuation of the extension system. Cooling and / or freezing appliance according to claim 10, characterized in that the movable element has at least one pull-out rail and at least one sliding element, which are interconnected and preferably latched and / or that the sliding element in the movement in the insertion direction and / or in the extension direction of the Form stop of the movable element. Cooling and / or freezing appliance according to claim 10 or 11, characterized in that the sliding element has at least one hold-down for a drawer and / or that the sliding element is designed such that it can be mounted by a pivoting movement on the sliding part and / or disassembled from this is. Cooling and / or freezing appliance according to one of the preceding claims, characterized in that at least one storage element is provided, which is preferably releasably connected to the movable member.

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