Patent Description:
The invention relates particularly here to a mobile accommodation in the form of a caravan or camper, also referred to as a mobile home. Such an accommodation is characterized by walls formed from sandwich panels. These panels comprise an insulating core of polymer foam on either side of which a covering is arranged. On an outer side this is usually aluminium or plastic, while on the inside, with comfort and aesthetics in mind, a wood veneer or wood fibre panel is often applied. At a position where a door, skylight, window or other openable or non-openable panel has to be realized a recess is arranged in the wall. In order to facilitate mounting of the panel use is preferably made of a casing frame which is placed in the thus provided wall opening and fixed therein. The panel is mounted in the casing frame while possible fittings (hinges and locks) have already been arranged therein beforehand. Mounting of a window or other panel in the thus provided opening can hereby take place relatively quickly and easily.

Patent application number <CIT> discloses a glazing system for a passenger service vehicle comprising glazing frames. The glazing system has a frame which attaches to a window opening of a passenger service vehicle. The frame has an exterior frame portion attached to a first side of a vehicle wall and an interior frame portion on an opposing side of the vehicle wall. Part of the interior frame portion being received in part of the exterior frame portion for securing the frame portions to one another against opposing sides of the vehicle wall.

Usually used as fixation means for fixing the casing frame in the wall opening are screws which each have to be tightened manually. Particularly in the case of panels of larger dimensions, and so larger numbers of screws, this is time-consuming.

The present invention therefore has for its object, among others, to provide a mobile accommodation with a wall opening in which a casing frame can be fixed in a considerably shorter time.

In order to achieve the state object a mobile accommodation of the type described in the opening paragraph, the fastening clip comprises a curved resilient plate body, in particular of metal, and more particularly of spring steel, in that the insertion cavity comprises a snap cavity with a series of shoulders, in that the insertion member comprises a snap member which snaps behind a shoulder of the series of shoulders in the snap cavity, and in that the snap member extends resiliently from an adjacent part of the fastening clip.

Provision is thus already made in the casing frame in the form of the insertion cavity in combination with fastening clips adapted thereto to enable fixing in the wall opening without further tools. These fixation means can be pressed easily into the insertion cavity so as to make a firm connection therewith. If desired however, an applicator tool which is specifically adapted to the clips and developed specially therefor can also be applied here with a cartridge for a series of such fastening clips in order to obviate manual placing of the clips and to further simplify mounting of the casing frame.

On the outer side the casing frame protrudes outside the wall opening so that the wall is thus clamped between this part of the casing frame and the fastening clips. A preferred embodiment of the mobile accommodation has the feature here that the second part of the fastening clip supports directly or indirectly in resilient manner on the wall counter to a spring tension. The resilience of the fastening clips here ensures a clearance-free securing of the wall.

The clips can be manufactured at a relatively low cost price and are found in practice to be highly suitable as fixation means for the casing frame. In order to be able to compensate possible dimensional fluctuations between the wall and the clips a further particular embodiment of the mobile accommodation has the feature according to invention that the insertion cavity comprises a snap cavity with a series of shoulders, and that the insertion member comprises a snap member which snaps behind a shoulder of the series of shoulders in the snap cavity. The series of shoulders thus provides a stepped adjustment and adaptation of the connection to the fastening clip. This series of shoulders can for instance be provided in the form of an internal toothing, in particular a sawtooth, inside the cavity which extends on one or more sides from the wall of the insertion cavity. In a further preferred embodiment the mobile accommodation according to the invention is characterized here in that the snap member extends resiliently from an adjacent part of the fastening clip. The snap member is thus able to snap behind each successive shoulder or tooth of the toothing until an end point has been reached.

In order to ensure that the casing frame can later no longer become detached from the wall opening, a further particular embodiment of the mobile accommodation according to the invention has the feature that at least one fastening clip is anchored in the wall by means of an invasive fastening member. This invasive fastening member is for instance a screw with which a fastening clip is screwed fixedly at one or several locations into an edge part of the wall adjacent to the wall opening. For the purpose of placing the fastening member an opening is provided in the fastening clip. This opening also serves to facilitate an optional removal of the fastening clips. The casing frame is thus anchored permanently in the wall, while the casing frame is held in place at other locations by means of fastening clips, optionally without such a further anchoring.

In order to enable free selection of the in situ positioning of the fastening clips a further preferred embodiment of the mobile accommodation has the feature according to the invention that the insertion cavity extends in the casing frame over at least substantially a full length thereof. The casing frame thus provides a mounting base for one or more fastening clips along this whole length. Both the number and the exact position of this (these) clip(s) can be freely chosen and adjusted here outside the location(s) where other parts may have to be mounted.

In order to achieve the state object a mobile accommodation of the type described in the opening paragraph, in a second aspect of the invention, is characterized in that said window covering unit comprises at least one further insertion member which protrudes into the insertion cavity in order to effect a durable mutual connection between said casing frame and said window covering unit therein. Such a window covering unit comprises for instance a roller blind which has to be provided adjacently of the opening. It is possible to opt for a similar type of attachment herefor as that between the casing frame and the fastening clips. In the same way as a fastening clip, the insertion member of the window covering unit protrudes into the insertion cavity of the casing frame for anchoring therein.

Such a window covering unit comprises for instance a roller blind which has to be provided adjacently of the opening. It is possible to opt for a similar type of attachment herefor as that between the casing frame and the fastening clips. In the same way as a fastening clip, the insertion member of the window covering unit protrudes into the insertion cavity of the casing frame for anchoring therein.

A preferred embodiment of the mobile accommodation has the feature here that the window covering unit comprises an elongate groove which extends therein along at least substantially a full length and that the insertion member extends from a connecting body received for axial movement in the groove. The mounting body can slide in the groove here to an optimal position for fastening in the insertion cavity of the casing frame. This groove moreover provides space for a back of the fastening clip(s) which elsewhere fix the casing frame in the wall opening.

The invention also relates to a fastening clip and casing frame of the type as applied in the above described mobile accommodation according to the invention, and will now be further elucidated on the basis of an exemplary embodiment and an accompanying drawing. In the drawing:.

The figures are otherwise purely schematic and not (always) drawn to scale. Some dimensions in particular may be exaggerated to greater or lesser extent for the sake of clarity. Corresponding parts are designated in the figures with the same reference numeral.

The mobile accommodation shown in <FIG> comprises a space bounded by walls <NUM> on a rolling chassis. This embodiment relates to a towed accommodation, normally referred to as a caravan, but may also relate to a tractive vehicle, normally referred to as a camper or mobile home. The invention can otherwise also be applied to other types of mobile accommodation, such as for instance boats and yachts. A wall opening <NUM> is provided in wall <NUM> of the accommodation for receiving an openable window <NUM>. Window <NUM> is for this purpose hung in a casing frame <NUM> which is placed in wall opening <NUM> and extends all around therein. Walls <NUM> of such an accommodation are normally assembled from sandwich panels with a relatively thin outer skin <NUM> of for instance plastic or aluminium and an inner wall <NUM> of plastic or wood sheet veneer which are separated from each other by a core <NUM> of thermally insulating polymer foam. At the location where a window, door, roof hatch or other type of panel has to be provided openings adapted for the purpose are recessed therein in the associated wall. Such a casing frame <NUM> is advantageously arranged in the thus created wall opening in order to facilitate final assembly of the panel for the builder of the accommodation. This is because, in addition to providing an attractive edge finish of wall opening <NUM>, casing frame <NUM> provides for diverse mounting provisions, such as for attachment of the panel and related parts such as sealing rubbers <NUM>, optional hinges and locks and optional window covering products. The casing frame is usually formed from an extrusion profile of plastic or aluminium. In the present example use is made of a casing frame <NUM> of extruded aluminium.

<FIG> show in further detail a cross-section of the attachment of casing frame <NUM> in wall opening <NUM>, while <FIG> shows a cross-section of the casing frame as such. A tongue <NUM> of casing frame <NUM> protrudes from opening <NUM> on an outer side of the accommodation and rests against an edge part of wall <NUM> adjacent to the opening. For an effective sealing a sealing means, such as an adhesive bead or mastic bead <NUM>, is arranged between tongue <NUM> and an edge part of wall <NUM> adjacent to the wall opening. The casing frame comprises adjacently of the tongue a beading part <NUM> with a cup-shaped cavity in which a complementary beaded part of window <NUM> hooks to form a mutual hinge. A sealing rubber <NUM> protrudes into a groove <NUM> provided for the purpose in casing frame <NUM> in order to seal window <NUM> when it is closed and locked counter to a resilient force of this sealing rubber by means of closing means (not shown here).

For a rapid and effective fixation of casing frame <NUM> in wall opening <NUM>, the casing frame comprises according to the invention an insertion cavity <NUM> in the form of a groove running over a full length or height therein. Groove <NUM> is provided internally with a toothing of successive sawteeth, see <FIG>. The casing frame is fixed by means of a number of fastening clips <NUM> which are distributed around the periphery of the window opening, see also <FIG>, and which each comprise an insertion member <NUM> with a snap member <NUM> at an outer end thereof. As shown in <FIG>, these fastening clips each protrude with their insertion member into insertion cavity <NUM> of casing frame <NUM>. These teeth of toothing <NUM> form a series of successive shoulders behind which snap member <NUM> of the fastening clip will click. The fastening clips take a resilient form, for instance of spring steel, so that as the clip with the insertion member is pushed further into the cavity the resilient end <NUM> will repeatedly click behind a shoulder located further along. A base part <NUM> of clip <NUM> simultaneously extends, see <FIG>, in order to thereby fix the casing frame in clearance-free manner in the wall opening under the spring tension imposed thereby. The casing frame can thus be fully secured in a short time in the wall opening without further tools being required. Base part <NUM> of the fastening clips optionally comprises an opening. This opening serves to enable later removal of fastening clip <NUM> if desired. Furthermore, a screw or other invasive fastening means can if desired be arranged therethrough so as to be received permanently in the wall. This provides anchoring of casing frame <NUM> in the wall, and thereby an extra guarantee against unintended detachment of frame <NUM> from the wall opening. For such a further securing it suffices for only several of the fastening clips to be thus anchored in wall <NUM>. The others can be arranged in the wall without further operations.

Claim 1:
Mobile accommodation, comprising a wall (<NUM>,<NUM>,<NUM>,<NUM>) with a wall opening (<NUM>) bounded by an edge, wherein in the wall opening a casing frame (<NUM>) is received which is intended and configured to comprise an openable or non-openable panel (<NUM>), which casing frame extends outside the wall opening on a first side of the wall and is fixed in the wall opening by means of fixation means, wherein the casing frame comprises at least one insertion cavity (<NUM>) accessible from an opposite side of the wall, and wherein the fixation means comprise at least one fastening clip (<NUM>) which at a first outer end comprises an insertion member (<NUM>) which protrudes into the insertion cavity in order to effect a durable mutual connection therein and at a second outer end supports directly or indirectly on the wall, characterized in that the fastening clip comprises a curved resilient plate body <NUM>), in particular of metal, and more particularly of spring steel, in that the insertion cavity comprises a snap cavity (<NUM>) with a series of shoulders (<NUM>), in that the insertion member comprises a snap member (<NUM>) which snaps behind a shoulder (<NUM>) of the series of shoulders in the snap cavity, and in that the snap member extends resiliently from an adjacent part (<NUM>) of the fastening clip.