CN103189700B - Refrigerator with a pull-out container for refrigerated goods - Google Patents

Abstract

The invention relates to a refrigerating appliance, especially a domestic refrigerating appliance, comprising an inner container (2) with a front opening (4) capable of being closed by a door panel for taking out and/or putting in refrigerated objects, and a drawable The cooled object container (3) and the supporting device (5) for making the cooled object container (3) can be pulled out supported in the inner container (2), wherein the supporting device (5) is cooling On the opposite side of the cooling material container (3) there is a roller (8a, 8b) in the rear area of the cooling material container (3) and in the middle area and/or the front area of the cooling material container (3) There is at least one sliding bearing point (6a, 6b, 6c), wherein said rollers (8a, 8b) and said at least one sliding bearing point (6a, 6b, 6c) are supported on at least one corresponding bearing of the inner container (2) Support on the surface (14).

Description

Refrigeration appliance with pull-out cooler container

The invention relates to a refrigerating appliance, in particular a domestic refrigerating appliance, having an inner container with a front opening which can be closed by a door panel for taking out and/or putting in refrigerated objects, a pull-out refrigerated object container and Supporting means for the pull-out support of the coolant container in the inner container.

DE9206166U1 describes a drawer guide, preferably for built-in or upright cooling furniture, with guide rails fixed on the side body parts of the furniture, two rollers mounted equiaxially on both sides of the drawer on These guide rails roll, and the two rollers are supported on the front end area of the drawer, seen in the insertion direction, wherein, in the outer, insertion-side end area of the guide rails, in the body Two rollers are supported equiaxially on the side walls of the section, and these rollers are supported on the side edge regions of the bottom of the drawer.

JP09280727A describes a pull-out container with two rollers on its rear end. Two further rollers are arranged on the front side of the base of the refrigeration appliance. The two rollers at the rear end of the pull-out container together with the two further rollers on the bottom front side of the refrigeration appliance form a support means for pulling out the pull-out container.

The object of the present invention is to realize a refrigeration appliance in which the coolant container can be easily pulled out or pushed in from the inner container by means of an inexpensive mounting means.

Refrigeration appliances especially refer to household refrigeration appliances, that is, refrigeration appliances used in the daily life of the family or possibly in the catering industry, especially for storing food and/or beverages for daily use at a specific temperature, such as cooling cabinets, Freezer or cooling freezer combination cabinet.

This object is solved according to the invention by a refrigeration appliance, in particular a domestic refrigeration appliance, which has an inner container with a front opening which can be closed by a door for removing and/or inserting cooling objects, and a The cooling product container that is pulled out and the support means for the pull-out mounting of the cooling product container in the inner container, wherein the support means are respectively located on opposite sides of the cooling product container at the sides of the cooling product container One roller in the rear region and at least one sliding bearing point in the middle region and/or the front region of the coolant container, wherein the roller and the at least one sliding bearing point are supported on at least one corresponding bearing of the inner container surface support.

The cooler container can be mounted, for example, in a cooling chamber in which the food product is stored at a temperature between approximately zero degrees Celsius and, for example, 8 degrees Celsius above zero. Alternatively, the cooler container can be supported in a freezer compartment, in which the food product is stored frozen or deep-frozen at a temperature between approximately minus 5 degrees Celsius and, for example, minus 18 degrees Celsius. In particular also two or more cooling product containers having a support device according to the invention can be arranged in each cooling or freezing compartment.

A pull-out or push-in mount is understood to mean, in particular, that the coolant container is mounted displaceably in a horizontally oriented plane, in particular drawer-like, and can be pulled forward through a front opening when the door of the refrigeration appliance is opened and It can be completely pushed back into the cooling or freezing compartment, so that the door panel can reclose the opening of the refrigeration appliance.

According to the invention, the at least one cooling product container is replaced by means of a telescopically drawn, fixedly mounted metal rail or instead of a purely sliding placement (where the bottom of the cooling product container slides directly on the bottom of the inner container along the ), which can be pulled out or pushed in due to the simultaneous or cooperating sliding and rolling friction due to the bearing means according to the invention.

A special feature of the invention can be that at least one roller and at least one sliding bearing are both arranged together or mounted on the coolant container. In this case, the at least one roller can in particular be supported on the coolant container in the rear region, ie spatially close to the rear wall of the inner container. It can be provided according to the invention that the at least one roller is supported in the rear region of the cooling product container, in particular at least two rollers are mounted on opposite sides of the cooling product container, especially because it can be determined that the user is pulling When pulling out the coolant container, the coolant container is usually grasped at the front side and/or on the handle and the coolant container is lifted slightly when being pulled out, which results in a lack of load, while at least one roller located in the rear region of the coolant container is additionally loaded here. Since the rolling friction of the rollers is in principle lower than the sliding friction of the front mounting surface, ie the sliding bearing point, the overall force required for pulling out the cooling substance container is reduced by arranging the rollers in the rear region of the cooling substance container.

In one embodiment according to the invention, two rollers can be mounted rotatably on opposite side walls of the cooling product container in the region of the rear side of the cooling product container. As a result, the cooling product container is still supported in the slightly raised state by at least two placement points of two rollers mounted rotatably on the opposite side walls of the cooling product container, so that the cooling product container is prevented from tipping over .

These rollers can have a running surface made of a thermoplastic, in particular polyoxymethylene (POM), especially having a coefficient of sliding friction μ between 0.3 and 0.5, especially between 0.38 and 0.42. This selection of the coefficient of sliding friction of the running surfaces of the rollers can according to the invention make it possible for the coolant container to be pulled out or pushed out of the inner container with little effort even if the rollers are stuck and/or the rollers are not rolling smoothly. enter. In this case, according to the invention, the fixedly fitted roller can thus form a sliding bearing.

In all embodiments according to the invention, in each case two or more, in particular three, separate sliding bearing points can be arranged on opposite sides of the cooling product container in the central region and/or in the front region of the cooling product container. on the side wall. The two or more, in particular three, individual sliding bearing locations can extend in the depth direction on the coolant container at a distance from one another, in particular evenly spaced from one another. With the aid of two or more sliding bearing points, the cooling product container can be supported not only in the front region of the cooling product container, but also in the central depth region of the cooling product container.

These sliding bearings can have sliding surfaces made of a thermoplastic, in particular polyoxymethylene (POM), especially having a sliding coefficient of friction μ between 0.3 and 0.5, in particular between 0.38 and 0.42. The sliding bearing point can generally have the same sliding friction coefficient as the corresponding sliding bearing point and/or the running surface of the roller.

In all embodiments according to the invention, the sliding bearing point can be latched, screwed, bonded or integrally formed as a separate component with the coolant container, in particular with the side wall of the coolant container. When the sliding bearing is snap-fitted on the opposite side of the coolant container or on a laterally protruding rib of the coolant container, the sliding bearing can have latching means which engage with the coolant container. The corresponding corresponding locking devices on the screen work together. The sliding bearing can be latched by pressing it against laterally protruding ribs of the coolant container. Alternatively, the sliding bearing point, which can be formed, for example, on the interior, can have bore holes, by means of which the sliding bearing point can be screwed directly to the coolant container by means of screws. In a further embodiment, the sliding bearing point can have an adhesive surface via which the sliding bearing point can be glued to the coolant container. Alternatively, the sliding bearing can also be molded directly into, ie molded into, the wall of the coolant container.

In all embodiments according to the invention, the sliding bearings and/or the rollers can be arranged on strips protruding laterally from the side walls of the coolant container. If the sliding bearings and/or the rollers are designed as separate retaining components, they can easily be snapped or latched or clamped on the laterally protruding strips.

The sliding bearings and/or the rollers can thus generally be fastened to separate holding elements. Depending on the size, in particular the depth, of the coolant containers, sliding bearings and/or rollers of the same type and/or size can be mounted in different numbers on different coolant containers. Thus, in the case of small, for example half-depth coolant containers of refrigeration appliances, for example only one or two sliding bearings can be provided per side. In the case of large, for example full-depth coolant containers, for example three or more sliding bearings can be provided per side. Alternatively, three or more sliding bearing points can also be fastened, in particular clamped, at different, variable distances to the laterally protruding strips.

In the embodiment with holding elements, each roller can be rotatably supported in a separate holding element with a mounting for fixing the holding element on and/or from the cooling container. A latching or clamping device on a strip protruding from the side wall. In particular, the rolling bodies of the roller can be rotatably mounted on the roller housing of the roller, for example by means of pivot pins, without having to form a rotary bearing on the coolant container itself.

In an alternative or supplementary embodiment with holding elements, each sliding bearing point can be fastened in a separate holding element, which has a device for fastening the holding element on the coolant container and/or Or latching means or clamping means on a strip protruding from the side wall of the cooling container.

The slide bearing can be formed in one piece with the holding component.

In addition to the support device according to the invention, as mentioned, the coolant container according to the invention can have guides which prevent or reduce tipping of the coolant container during pulling out and/or pushing in and/or skewed. At least one, in particular two, sliding bearings can thus cooperate with side walls or ribs of the inner container to form side guide rails. The side guide guides the coolant container in the pull-out direction or in the push-in direction.

In other words, the invention may relate to a domestic refrigeration appliance having a housing body, ie a container for cooling material, which can be removed in a simple manner from the container provided therefor, for example the freezing or cooling section of the domestic refrigeration appliance. pull out. The carrier device according to the invention can be configured (absence of the predicate) for example as an add-on element mounted on a conventional housing body, ie the coolant container. Mounting or fastening can take place, for example, by snap-fit connections, clamp connections and/or screw connections.

The cooler container can be produced from plastic, for example from polystyrene (PS) or polypropylene (PP). The upper guide surface can be mounted or injection molded on the coolant container. The guide surface can have ribs on opposite sides of the coolant container, on which ribs at least one sliding bearing point and at least one roller are mounted. These elements can be mounted as additional elements which are clamped or snapped onto fastening elements or guide surfaces or ribs provided for them.

With the support device according to the invention, it is possible to realize a pull-out system for the cooling product container which allows very simple guidance and handling of the cooling product container in a domestic refrigeration appliance. According to the invention, the cooling container can be pulled out and pushed in by means of the bearing means with a combination of rolling and sliding friction.

On the housing body, ie the coolant container, a sliding element, ie a sliding bearing surface, can be fastened laterally, for example in the rear part. The slide element can be mounted rotatably on the housing body, ie on the coolant container, by means of a bayonet connection, a clamp connection or a screw connection. The sliding element can be made of plastic. In particular, the sliding element can be produced from a plastic with high sliding properties. The sliding element can thus be manufactured from polyoxymethylene (POM) or other materials with similar properties.

Wheels, ie rollers, may be located on the rear part of the housing or cooling container. The wheel may be manufactured from polyoxymethylene (POM). A single wheel or a plurality of wheels make it easier to pull out the case, since the normally existing sliding friction is converted into rolling friction. Furthermore, according to the invention, further disadvantageous sliding friction is reduced by means of an additional element, in particular a sliding bearing point which can be plugged on. These elements, that is to say the sliding bearings, can be embodied differently from the strips as up to short, point-shaped elements.

The sliding properties generally determined by the material of the inner chamber (innerliner), ie inner container and housing, are not as good as those of polyoxymethylene (POM) with polystyrene (PS). These properties are also improved according to the invention by at least one rear wheel or roller.

The sliding element can be provided as an addition to rolling bearings, ie rollers, or mounted on the coolant container. The rolling bearings, ie the rollers, can be produced like the sliding elements from polyoxymethylene (POM) or other materials with similarly good properties. The rolling bearing, that is to say the roller, can be clamped, rotatably screwed on the coolant container or mounted on the support block. The rolling bearings, ie the rollers, are used for their main function as rolling bearing points for the housing body, ie for the coolant container. The rollers can additionally be used as guide elements for the housing concrete, ie for the coolant container, and if necessary even as stops, ie brakes, in order to prevent, for example, the housing concrete or the coolant in the fully pushed-in position. The container impinges on the rear side of the interior of the inner container. For tipping over in the pulled-out state, ribs can be provided in the inner container above the shell body, ie the coolant container, which engage the shell body or the coolant container edge-on-side from above. In addition, the ribs can be used to support cooling object racks, for example glass panes, thereon.

The combination of rolling and sliding friction has proven to be very good as a pull-out support for shell bodies or containers in domestic refrigeration appliances. Here, the individual wheels or multiple wheels, ie the position of the rollers on the coolant container and the position of the mounted sliding bearing on the coolant container, can be varied, so that the rolling and sliding elements can be very well coordinated . It can be advantageous that, in addition to simple rolling friction, there are also sliding properties which can be achieved by the material of the inner container and the sliding bearing of the cooling container and/or the material of the rollers of the cooling container. Compared with the current pull-out technology, this solution is an advantageous solution in terms of price/performance ratio.

An exemplary embodiment of the invention is described with reference to FIGS. 1 to 4b. Other general features and advantages of the invention also emerge from the detailed description of these specific embodiments. The accompanying drawings show:

Fig. 1 has the three-dimensional sectional view of the domestic refrigerating appliance of cooling object container according to the present invention;

2 is a perspective sectional view of a modified coolant container compared to FIG. 1 in the region of the sliding bearing and rollers according to the invention;

Figure 3 is a side view of the cooling container according to Figure 2;

Figure 4a is a perspective view of a separate roller according to the invention;

FIG. 4b is a perspective view of a separate sliding bearing according to the invention.

The section of the refrigerating appliance 1 , shown as an example in FIG. 1 , shows in section the lower section of the inner container 2 , in which a coolant container 3 mounted in the inner container 2 so as to be drawn out is arranged. The inner container 2 has a closeable front opening 4 for removing and/or inserting cooling items. The coolant container 3 is supported in the inner container 2 in a pull-out manner. Bearing means 5 are provided for this purpose.

In the exemplary embodiment shown, two rollers 8 a and 8 b are rotatably mounted on opposite sides of the coolant container 3 in the rear area of the coolant container 3 . For the tilting of the coolant container 3 in the extended position, in this exemplary embodiment ribs 13 are fastened or formed or provided on one or both side walls 2 a of the inner container 2 . The ribs 13 serve to guide the cooling product container 3 from above on the side edges of the cooling product container 3 . A non-illustrated support surface or glass pane can be placed on one surface of the rib 13 .

In the exemplary embodiment shown, the bearing means 5 has sliding bearing points 6 a , 6 b and 6 c respectively arranged on two opposite side walls of the coolant container 3 , which are combined with a roller 8 . The rollers 8 are arranged on the rear area of the coolant container 3 .

FIG. 2 shows in detail the carrier device 5 according to the invention on a side wall of the coolant container 3 . Arranged on the side wall of the coolant container 3 is a strip 7 which protrudes laterally outward from the plane of the side wall. In the exemplary embodiment shown, the strip 7 is designed as a long bar with a rectangular cross section. In this exemplary embodiment, the strip 7 is designed in one piece with the side walls or the coolant container 3 . To stiffen the outwardly laterally protruding strip 7 , a plurality of reinforcing ribs 9 a to 9 f are provided. In the exemplary embodiment shown, these reinforcing ribs 9 a to 9 f have a triangular contour and connect the side walls of the coolant container 3 with the upwardly directed surface of the strip 7 .

For example, three sliding bearings 6 a , 6 b , 6 c and a roller 8 are fastened to the bar 7 . The sliding bearings 6 a , 6 b , 6 c and the roller 8 can be distributed evenly spaced over the length of the strip 7 . The rollers 8 a , 8 b are arranged at the rear, ie in the rear area, of the coolant container 3 . In this exemplary embodiment, the rollers 8a, 8b are rotatably mounted in a holding element 10a. The holding element 10 a is fastened to a receptacle 11 on the strip 7 of the coolant container 3 . The slide bearings 6 a , 6 b , 6 c also each have a holding element 10 b , 10 c , 10 d which are fastened in each case to a rear projection 12 a , 12 b , 12 c of the strip 7 .

FIG. 3 again shows the coolant container 3 in side view, together with a corresponding bearing surface 14 on which both the sliding bearing points 6 a , 6 b , 6 c and the rollers 8 a , 8 b are supported. The counter bearing surface 14 can optionally be formed on the inner container 2 or be fastened as a separate component. In a slight variation from the embodiment according to FIG. 1 , the coolant container 3 according to FIG. 3 has a handle 15 on two opposite side walls. The handle 15 can be formed by a recess in the side wall of the coolant container 3 .

FIG. 4a shows an exemplary embodiment of rollers 8a, 8b. The rollers 8 a , 8 b have rolling bodies 16 . The rolling bodies 16 are mounted rotatably in a rolling housing 18 by means of a shaft 17 . For this purpose, the rolling housing 18 can have two opposing walls 19 a , 19 b , each of which has a respective bore 20 . The diameter of the borehole 20 corresponds substantially to the diameter of the shaft 17 . In this case, the diameter of the shaft 17 can optionally be slightly larger than the diameter of the bore 20 by means of a press fit, so that the shaft 17 is fixed in the rolling housing 18 in a rotationally fixed manner. In this case, the rolling elements 16 have hubs, which have a slightly larger diameter than the shaft 17 for clearance fit, so that the rolling elements 16 are rotatably mounted on the fixed shaft 17 . Alternatively, the diameter of the shaft 17 can be slightly larger than the diameter of the hub in a press fit, so that the shaft 17 is fixed in the rolling body 16 in a rotationally fixed manner. The shaft 17 thus rotates jointly with the rolling bodies 16 . Optionally, the shaft 17 can also be designed in one piece together with the rolling elements 16 , for example as a one-piece injection-molded plastic part. In this embodiment, the bores 20 in the opposite walls 19a, 19b of the rolling housing 18 have a diameter slightly larger than the shaft 17 for a clearance fit, so that the shaft 17 is mounted rotatably together with the rolling bodies 16 on Rolling housing 18.

The rolling shell 18 is part of a retaining component 10 a which, in addition to the rolling shell 18 , has a retaining section 21 a. In the exemplary embodiment shown, the retaining section 21 a is designed as a latching hook having a vertical support wall section 22 and a horizontal support wall section 23 as well as a downwardly directed latching projection 24 . The latching projection 24 is designed to latch into a rear projection on the strip 7 of the coolant container 3 . The rolling bodies 16 or the rollers 8 a , 8 b are rotatably mounted on the rail 7 of the coolant container 3 by means of the latching projection 24 or the retaining component 10 a.

As shown by way of example in FIG. 4 b , in a similar manner to FIG. 4 a , each slide bearing point 6 a , 6 b , 6 c can have a retaining element 10 a , 10 b , 10 c that acts identically. Each sliding bearing point 6 a , 6 b , 6 c can have an arcuately curved sliding surface 25 which produces a linear contact on the corresponding bearing surface 14 of the inner container 2 . A retaining section 21b, 21c, 21d can adjoin the surface of the sliding bearing points 6a, 6b, 6c, on which in the exemplary embodiment shown a snap-in hook is formed, which has a vertical Support wall section 26 and a horizontal support wall section 27 , as well as a downwardly directed latching projection 28 . The latching projection 28 is designed to latch into a rear projection on the strip 7 of the coolant container 3 . The sliding surfaces 25 or the sliding bearings 6 a , 6 b , 6 c are fastened to the strip 7 of the coolant container 3 by means of the latching projections 28 or the holding elements 10 b , 10 c , 10 d .

Claims (21)

1. Refrigeration appliance having an inner container (2) with a front opening (4) for taking out and/or putting in cooling material which can be closed by a door panel, and a pull-out cooling material container (3) and a supporting device (5) for pulling out the cooling container (3) in the inner container (2), characterized in that said supporting device (5) is mounted on the side of the cooling container (3) The opposite side walls each have a roller (8a, 8b) in the rear area of the cooling product container (3) and a sliding bearing in the middle area and/or the front area of the cooling product container (3) (6a, 6b, 6c), wherein said rollers (8a, 8b) and at least one of said sliding bearing locations (6a, 6b, 6c) are supported on at least one corresponding bearing surface (14) of the inner container (2) . 2. The refrigerating appliance according to claim 1, characterized in that, said sliding bearing parts (6a, 6b, 6c) and said rollers (8a, 8b) are supported on corresponding bearing surfaces (14), and these corresponding bearing surfaces Molded on said inner container (2). 3. The refrigeration appliance according to claim 1 or 2, characterized in that the refrigeration appliance is a domestic refrigeration appliance. 4. The refrigerating appliance according to claim 1 or 2, characterized in that, on the rear side area of the cooling substance container (3), two rollers (8a, 8b) are positioned on opposite sides of the cooling substance container (3). It is rotatably supported on the side wall. 5. The refrigeration appliance according to claim 1 or 2, characterized in that the rollers (8a, 8b) have a running surface made of thermoplastic. 6. The refrigeration appliance according to claim 5, characterized in that the thermoplastic has a coefficient of sliding friction [mu] between 0.3 and 0.5. 7. The refrigeration appliance according to claim 6, characterized in that the coefficient of sliding friction [mu] is between 0.38 and 0.42. 8. The refrigeration appliance according to claim 5, characterized in that said thermoplastic is polyoxymethylene (POM). 9. Refrigerating appliance according to claim 1 or 2, characterized in that on the central region and/or the front region of the cooling substance container (3) on the opposite side walls of the cooling substance container (3) Above, two or more separate sliding bearing locations (6a, 6b, 6c) are respectively arranged. 10. The refrigeration appliance according to claim 9, characterized in that there are three sliding bearing locations (6a, 6b, 6c). 11. The refrigeration appliance as claimed in claim 9, characterized in that the sliding bearing points (6a, 6b, 6c) have sliding surfaces made of thermoplastic. 12. The refrigeration appliance according to claim 11, characterized in that the thermoplastic has a coefficient of sliding friction [mu] between 0.3 and 0.5. 13. The refrigeration appliance according to claim 12, characterized in that the coefficient of sliding friction [mu] is between 0.38 and 0.42. 14. The refrigeration appliance according to claim 11, characterized in that said thermoplastic is polyoxymethylene (POM). 15. The refrigerating appliance according to claim 1 or 2, characterized in that, the sliding bearing parts (6a, 6b, 6c) are latched, screwed, glued or integrally connected with the coolant container (3) Formed as individual components. 16. The refrigerating appliance according to claim 15, characterized in that, the sliding support parts (6a, 6b, 6c) are locked, screwed, glued or one-piece with the side wall of the coolant container (3) ground into separate components. 17. The refrigerating appliance according to claim 1 or 2, characterized in that the sliding bearings (6a, 6b, 6c) and/or the rollers (8a, 8b) are arranged at some On the strip (7) protruding laterally from the side wall. 18. The refrigerating appliance according to claim 1 or 2, characterized in that, the sliding bearing parts (6a, 6b, 6c) and/or the rollers (8a, 8b) are fixed on some separate holding members (10a, 10b , 10c, 10d). 19. Refrigerating appliance according to claim 18, characterized in that each roller (8a, 9b) is rotatably supported in a separate holding member (10a) having a Detent means ( 24 ) or clamping means on the cooling product container ( 3 ) and/or on a strip ( 7 ) protruding from the side wall of the cooling product container ( 3 ). 20. Refrigerating appliance according to claim 18, characterized in that each sliding bearing point (6a, 6b, 6c) is fastened to a separate holding member (10b, 10c, 10d) having a The holding element is fastened to the cooling product container (3) and/or to a latching means (28) or clamping means on a strip (7) protruding from the side wall of the cooling product container (3). 21. The refrigeration appliance as recited in claim 20, characterized in that the sliding bearing (6a, 6b, 6c) is formed in one piece with the holding element (10a, 10b, 10c).