Patent ID: 12230911

DETAILED DESCRIPTION

In an embodiment, the present invention provides a holding frame, a plug connector and an electronic device, in which the fastening of a module in a holding frame is improved.

In an embodiment, the holding frame of the present invention has at least one flange part with trapezoidal tapering.

Due to the trapezoidal tapering, the flange part, also called a wall segment, is now no longer rectangular. As a result of the tapering, two opposite outer edges of the flange part are not arranged parallel to one another, but instead these two outer edges are positioned at an angle to one another. These two outer edges run toward one another in the direction of the tapering. Due to the tapering, the flange part has a width changing over the length of the flange part, so that the flange part has no longer a constant width, as is the case with a rectangular flange part. Due to this tapering, a uniformly distributed bending stress can be achieved over the length of the flange part and thus a uniform deformation of the flange part over the bending length of the flange part during the insertion and removal of the modules into/out of an interior of the base frame. In addition, a greater elastic deflection can take place without plastic deformation than when a rectangular flange part, which has a constant width, is used. As a result of the tapering, a uniform stress curve can be achieved over the length of the flange part when the flange part flexes during the insertion and removal of the respective module. The trapezoidal tapering causes a reduction in the spring stiffness of the flange part formed from a resilient sheet metal. With the same deflection, a pressing force can thereby be reduced, as a result of which a plugging force required for inserting the modules into the holding frame can in turn be reduced. Due to the tapering, material can also be saved in the flange part, wherein material is saved in areas which are preferably not necessary for the functioning of the flange part, namely holding the modules on the base frame.

The at least one flange part preferably has a fastening region for holding the modules, wherein the at least one flange part preferably tapers trapezoidally in the direction of the fastening region. The flange part thus preferably has its smallest width directly adjacent to the fastening region. This means that the flange part can perform a greater deflection during insertion of the modules directly adjacent to the fastening region or in the fastening region, whereby an improved rear latching and thus latching of the fastening region to the module can be achieved at the same time. In the direction of the fastening region the elasticity of the flange part can be increased by the tapering, whereby a kind of flexible joint can be formed on the flange part. The flange part is designed to be resilient and can for this purpose be formed for example from a spring plate. When a module is inserted, the wall segments mounted on the base frame can thereby spring away at their fastening region outwards from the interior of the base frame, in order to enable insertion of the module into the interior. When the module is positioned in the desired position in the interior of the base frame, the fastening region of the flange part can again flex or pivot back in the direction of the interior of the base frame, so that the fastening region of the flange part can hold the module in this position.

The fastening region is preferably formed on a head region of the at least one flange part which is positioned on an end section of the flange part opposite a foot region. The fastening region and the foot region of a flange part thus preferably have a greatest possible distance from each other.

The at least one flange part can have a central section between the foot region and the head region, wherein the central section can taper trapezoidally from the foot region towards the head region and can be reversibly deformable. Due to this trapezoidal tapering, a uniform deformation of the flange part, in particular in the area of the central section of the flange part, can be achieved over the bending length of the flange part during the insertion and removal of a module into/from the interior of the base frame. The deformation is reversible, which means that an elastic and not any plastic deformation of the central section can take place. Due to the trapezoidal tapering, the central section forms a deformation section of the flange part. The flange part thus has the trapezoidal tapering in the area of its deformation section. Deformation of the flange part preferably occurs exclusively in the central section and not at the head region or fastening region and also not at the foot region of the flange part. Due to the tapering from the foot region towards the fastening region or head region, the bending stress of the flange part can decrease from the foot region towards the fastening region. The foot region can form a clamping location of the flange part on the base frame, especially on a receiving section of the base frame. As a result of the reduction in the width of the flange part due to the trapezoidal tapering, starting from this clamping location—the foot region of the flange part—a uniform stress profile over the length of the flange part can be achieved when the flange part flexes during the insertion and removal of the respective module. In the direction of the head region, the elasticity of the flange part can be increased by the tapering, whereby a kind of flexible joint can be formed on the flange part. Seen along the length of the flange part, the central section preferably has a much larger surface area than the foot region and the fastening region of the flange part. In contrast to the central section, the foot region and/or the head region can have a constant width so that it can be provided that the trapezoidal tapering is formed exclusively in the central section. The trapezoidal tapering is preferably formed over the entire length of the central section.

The two opposite outer edges of the flange part, which are not arranged parallel to each other but are designed to tapering toward each other in order to form the trapezoidal tapering, can be formed straight. However, it is also possible for these outer edges of the flange part which extend along the central section to have a curved shape. Due to the curved shape of the outer edges, the distribution of the bending stress within the flange part can be further improved, so that the load acting on the flange part during insertion and removal of the modules can be reduced and at the same time an optimized spring effect of the flange part can be achieved.

In order to hold the modules, the fastening region can have at least one fastening tab. The fastening tab can be designed in such a way that, in the mounted position, the fastening tab can rest on an upper side of a projection element of the respective module, so that, in the insertion direction of the module into the base frame, the fastening tab can prevent a movement of the inserted module that is counter to the insertion direction of the module. The at least one fastening tab is preferably designed such that it projects from a main extension plane of the flange part.

In order to be able to achieve a higher stability when the modules are held in their inserted position in the base frame, the fastening region of the flange part can have two fastening tabs, so that two fastening tabs can rest simultaneously on an upper side of a projection element of the respective module. The two fastening tabs of a fastening region of a flange part can be formed symmetrically to each other. However, the two fastening tabs can also be asymmetrical to each other.

The two fastening tabs of a fastening region of a flange part can be arranged on opposite outer edges of the flange part. The two outer edges preferably delimit the respective flange part towards the outside. Due to their arrangement on the outer edges, the fastening tabs can be arranged in the form of two wings on the flange part.

The fastening tabs preferably have a bent design in the region of the connection to the respective outer edge. The fastening tabs are preferably bent outwards from the main extension plane of the flange part. The fastening tabs can preferably each be formed bent at an angle α≥90° to the outer edge of the flange part. Particularly preferably, the fastening tabs can each be formed bent at an angle α≥180° to the outer edge of the flange part.

The at least one fastening tab preferably has a length which is at least three times a thickness of the flange part. The thickness of the flange part means the sheet metal thickness of the flange part if this is formed from a spring plate. It has been shown that with a length of the respective fastening tab of at least three times the thickness of the flange part, particularly good holding properties can be achieved with the fastening tabs for holding the modules in the base frame. The length of the fastening tab is located in the main extension direction of the fastening tabs.

In a mounted position, the at least one flange part can be arranged on a receiving section formed on a side wall of the base frame, wherein the receiving section can have an opening for receiving a projection element of a module inserted into an interior of the base frame, wherein in the mounted position of the flange part, the opening can be at least partially overlapped by the fastening region of the flange part. The flange part and preferably several such flange parts can be arranged on the base frame. For example, each module inserted or introduced into the base frame can be held onto or fastened to the base frame via two oppositely arranged flange parts. The mounted position is the position in which the flange part is arranged on the base frame and a module that has been introduced into the interior of the base frame can be held by the flange part. A plurality of receiving sections are preferably formed on two opposite side walls of the base frame on which the flange part can be arranged. The receiving sections of a side wall are preferably arranged next to each other and thus in a row. The receiving sections are preferably formed at least in areas in the respective side wall of the base frame, so that the receiving sections can form a defined receiving region for the flange parts. A receiving section is assigned to each flange part to be arranged on the base frame, so that in each case one flange part can be arranged in each receiving section. Each receiving section preferably has an opening which, in the mounted position of the flange parts on the base frame, is in each case overlapped at least in regions by the fastening region of the flange part assigned to the receiving section. The openings are preferably designed in the form of openings on the base frame or on the side walls of the base frame. The openings preferably extend into the base frame starting from the upper edge of the base frame. Via the openings, the flange parts can be brought into operative connection with the modules, especially with the projection elements of the modules, in order to be able to hold the modules in the interior of the base frame. For this purpose, the projection elements of the modules can project into the respective opening. In the mounted position, the openings can be covered, at least in some regions, by the fastening region of the respective flange part, so that the flange parts can each cover or overlap a projection element of an inserted modules at the end face.

In order to be able to form a coding for the insertion of the modules in the correct position, the openings of the receiving sections formed on the first side wall can have a greater width than the openings of the receiving sections, which openings are formed on the second side wall. The two projection elements formed on a module likewise preferably have different widths, so that an insertion of the module can only be done in such a way that the wider projection element can be inserted into the wider opening of a receiving section and the narrower projection element of a contact insert can be inserted into the narrower opening of a receiving section. It is thereby possible to prevent incorrect plugging of the modules into the base frame and thus into the holding frame.

The receiving sections are preferably formed in each case on an outer side of the base frame that faces away from the interior. In the mounted position, the flange parts are thus preferably on the outer side of the base frame. Preferably, in the mounted position no part or area of a flange part is arranged on an inner side of the base frame which inner side faces in the direction of the interior of the base frame. The flange parts therefore no longer have to have a design which is elaborately bent, because, in the case of the flange parts according to the invention, it is no longer necessary for the lower edge of the base frame to be gripped in an encompassing manner.

The at least one flange part is preferably fastened or held via its foot region to/on the receiving section assigned to it and thus to the base frame. The flange part is thus preferably not fastened to the base frame via its head region or its fastening region. In contrast to the foot region, the head region or the fastening region is preferably exposed relative to the base frame, so that in the mounted position preferably no contact with the base frame is formed between the head region or the fastening region of the flange part.

The fastening of the foot region of a flange part to the receiving section or to the base frame can be effected in various ways. For example, the fastening can be formed by means of a latching connection and/or a riveted connection and/or an adhesive connection between the flange part and the base frame.

At its foot region, the at least one flange part can have a fastening element which in the mounted position can be in engagement with an opening formed on the base frame. Each receiving section can have such an opening. The fastening elements can be designed, for example, in the form of a tab or a lug which, in the mounted position, enters into an opening on the base frame or on the respective receiving section and there can latch or hook.

A fastening of a flange part to the base frame can preferably be designed such that in the mounted position the base frame has at least one slot-shaped cut-out into which the foot region of the at least one flange part can be inserted. Each flange part can thereby be arranged and fastened individually on the base frame and thus individually on its respective associated receiving section. In the case of such a fastening, however, the flange parts can also be arranged and fastened in pairs on the base frame and thus two or more flange parts on its respective associated receiving section. By inserting the flange parts at least with their foot region into a slot-like cut-out of the receiving section assigned to them, the mounting of the flange parts on the base frame can be accomplished particularly easily and quickly. The structural design of the holding frame can also be considerably simplified as a result. The slot-like cut-outs can each form a pocket on the base frame into which the flange parts, in the mounted position, can engage at least in some regions, in this case with their foot region. The foot region of the flange parts with which the wall segments can be inserted into the slot-like cut-out is preferably formed on an end section of the flange parts.

The at least one slot-shaped cut-out is preferably formed on a lower edge of the base frame. The flange parts can thus preferably each be fastened to the base frame from below and inserted into the slot-like cut-outs. The mounting direction of the flange parts on the base frame is thus preferably counter to the insertion direction of the modules into the interior of the base frame, so that an insertion of the flange parts into the respective slot-like cut-out can take place in an opposite direction to the insertion of the modules into the base frame. The modules are preferably inserted from above into the interior of the base frame.

The slot-like cut-outs of the receiving sections formed on the first side wall can be connected to one another and/or the slot-like cut-outs of the receiving sections formed on the second side wall can be connected to one another. The slot-like cut-outs formed on a side wall are preferably arranged one after the other in a row. If the slot-like cut-outs formed on a side wall are connected to one another, the slot-like cut-outs can take the form of a cut-out, which can span all receiving sections of a side wall. Such a slot-like cut-out can extend over more than ⅔ of the length of the side wall.

In order to be able to achieve a separation of function between the foot region and the central section, an offset can be formed in a connection region of the foot region on the central section such that the foot region can extend in a first plane and the central section can extend in a second plane arranged offset to the first plane. In the mounted position within the base frame, the foot region can thereby be arranged in the slot-like cut-out, wherein on the connection region of the flange part having the offset, the flange part can be guided out of the cut-out in the mounted position, so that the central section and also the fastening region or the head region of the flange part can be guided along the outer side of the base frame and the said outer side thus barely no longer engages in the slot-like cut-out of the receiving section. Due to the offset along the length of the flange part, the flange part is no longer formed flat over its entire length.

The receiving sections can each have a bearing face against which an inner surface of the flange parts facing in the direction of the interior of the base frame can lie in the mounted position. Due to the abutment of the flange parts over their central section on the respective receiving section, a good and positionally secure support of the flange parts on the receiving sections and thus on the base frame can be achieved. The bearing face preferably faces away from the interior of the main frame.

A particularly positionally secure attachment of the flange parts on the base frame can further be achieved by the fact that the bearing face of a receiving section can be delimited by two opposite inner edges, wherein in the region of the central section of the flange parts the outer edges of the flange parts can, in the mounted position, adjoin the inner edges of the receiving section assigned thereto in a positive-locking manner. A lateral displacement of the flange parts, especially during the insertion and removal of the modules, can thereby be reliably prevented, because the flange parts are supported on both sides by the outer edges and are limited in their movement.

It is further possible for an identification element to be fastened to each of the flange parts. The identification element can already be labeled or can be labeled individually by the user. The identification elements can provide the possibility of labeling the modules or the plug-in locations for the modules in the interior of the base frame. Particularly preferably, the identification element can be attached or be attachable to the foot region of the flange part. The identification element can, for example, be inserted together with the foot region into the slot-like cut-out in order to secure the identification element. In addition, it can further be possible for the identification element to be glued to the flange part. By means of the identification element, an individual identification of the plug-in locations for the modules is possible without increasing the necessary installation space for the holding frame.

The flange parts can be designed as individual elements, or two or more flange parts arranged on a side wall can be connected to one another. The interconnected flange parts are then preferably formed integrally with one another.

Particularly preferably, the flange parts are integrally connected to one another at their foot region. If two or more flange parts are connected to one another, the fastening of the flange parts to the base frame can be accomplished even more quickly.

The object according to the invention is further achieved by means of a plug connector which has a housing, a holding frame arranged in the housing and at least one module accommodated in the holding frame, wherein the holding frame is designed and developed as described above.

Furthermore, the object according to the invention is achieved by means of an electronic device which has at least one above-described, designed and further developed plug connector.

FIGS.2to7each show a schematic representation of a holding frame100which can be arranged in a housing of a plug connector.

The holding frame100has an integrally formed base frame10. The base frame10has a first side wall11, a second side wall12opposite the first side wall11, a first end wall13and a second end wall14opposite the first end wall13. The two side walls11,12are arranged parallel to one another. The two end walls13,14are likewise arranged parallel to one another. The end walls13,14are arranged at a 90° angle to the side walls11,12. The two side walls11,12and the two end walls13,14enclose or delimit an interior15of the base frame10. Modules200can be inserted into this interior15in the insertion direction E and attached as shown, for example, inFIG.6.

The modules200are fastened via flange parts16arranged on the base frame10, as are shown in particular inFIGS.1aand1b. The flange parts16arranged on a base frame10are in each case configured identically. In the base frame10shown here, four such flange parts16are arranged, wherein two flange parts16are arranged on the first side wall11and two flange parts16are arranged on the second side wall12.

The base frame10is made of a different material to the flange parts16. The base frame10is made of a material which has a lower elasticity and thus a greater stiffness than the flange parts16.

The base frame10is designed to be rigid. The base frame10is designed as a die-cast component.

The flange parts16are each designed to be resilient. The flange parts16can be formed from a spring plate.

FIG.1ashows a top view of an outer surface17of a flange part16, which, in the position mounted on the base frame10, faces away from the interior15of the base frame10.

FIG.1bshows a top view of an inner surface18of the flange part16which, in the position mounted on the base frame10, faces in the direction of the interior15of the base frame10.

The flange parts16each have a foot region19, a head region20and a central section21arranged between the foot region19and the head region20. Viewed along the length of the flange part16from the foot region19towards the head region20, the central section21has a substantially larger surface area than the head region20and the foot region19. The foot region19is formed on a first end section of the flange part16and the head region20is formed on a second end section of the flange part16opposite the first end section.

The flange part16has its greatest width BFat the foot region19. The flange part16has its smallest width BKat the head region20. In the region of the central section21, the flange part16tapers in that the width BMof the central section21tapers from the foot region19towards the head region20. Due to the tapering of the width BMof the central section21from the foot region19towards the head region20, a uniform deformation of the flange part16over the length of the flange part16during insertion and removal of the modules200can be achieved.

In the region of the central section21, the outer edges22,23of the flange part16are not formed in a straight line, but they have a curved shape along the length of the central section21and thus from the foot region19up to the head region20. However, the two outer edges22,23of the flange part16can also be designed in a straight line. The outer edges22,23do not run parallel to one another, but are arranged in relation to each other. Starting from the foot region19, the outer edges22,23run toward each other in the direction of the head region20, so that in the region of its central section21the flange part16tapers trapezoidally from the foot region19towards the head region20.

An offset is formed in the connection region24of the foot region19on the central section21in such a way that the foot region19extends in a first plane and the central section21extends in a second plane offset with respect to the first plane. The first plane and the second plane are essentially oriented parallel to each other.

The foot region19has two laterally formed shoulder surfaces25,26which, in the mounted position of the flange part16on the base frame, can both engage in a slot-like cut-out27of a receiving section35formed on the base frame10, as can be seen, for example, inFIG.5. The two shoulder surfaces25,26project laterally outwards in such a way that they laterally overlap or project beyond the central section21and the head region20.

The foot region19further has a fastening element28which can engage in an opening29formed on the base frame10. The fastening element28is designed here in the form of a tab which projects from the foot region19and which is formed bent in the direction of the base frame10. The fastening element28in the form of the tab can hook into the opening29. The fastening element28is formed in the center of the width BFof the foot region19.

A fastening region30, via which a module200inserted into the interior15can be held in the interior15, is formed at the head region20. The fastening region30has two fastening tabs31,32. The fastening tabs31,32extend in the mounted position of the flange part16on the base frame10in the direction of the interior15of the base frame10. The two fastening tabs31,32are each integrally formed on one of the two outer edges22,23of the flange part16. In the embodiments shown inFIGS.1a,1b, the fastening tabs31,32are each formed bent at an angle α of about 90° to the outer edge22,23of the flange part16. The fastening tabs31,32project from the main extension plane of the flange parts16.

The lower edges33of the fastening tabs31,32, with which the fastening tabs31,32rest on the projection elements210of the modules200in order to be able to hold the modules200in the interior15of the base frame10, have an essentially straight design. The upper edges34of the fastening tabs31,32opposite the lower edges33are, on the other hand, formed obliquely so that the upper edges34can form an insertion bevel in the direction of the insertion direction E of the modules200into the interior15of the base frame10. As a result of the insertion bevel, the modules200, especially the projection elements210of the modules200, can slide during their insertion along the upper edge34of the two fastening tabs31,32and thereby bend the flange parts16outwards, so that the flange parts16spring outwards and open up the interior15of the base frame10, so that the modules200with their projection elements210can be inserted into the interior15of the base frame10. When the modules200are inserted into the interior15, the flange parts16can again spring back automatically until they rest with their lower edge33on the projection elements210in order to hold the modules200in the interior15of the base frame10. The length of the individual fastening tabs31,32is preferably at least three times the thickness or the sheet metal thickness of the flange part16, as a result of which particularly good holding properties can be achieved in the fastening tabs31,32for holding the modules200in the base frame10.

As can be seen inFIG.2, the base frame10has a receiving section35for each flange part16. The receiving sections35are formed on an outer side36, facing away from the interior15, of the base frame10. The receiving sections35are formed on the two side walls11and12of the base frame10. In the embodiment shown here, two receiving sections35are formed in each case, on both the first side wall11and the second side wall12.

Each receiving section35has a slot-like cut-out27into which the foot region19of the respective flange part16can be inserted with its two shoulder surfaces25,26. In the embodiment shown here, the slot-like cut-outs27of the receiving sections35of the first side wall11and the slot-like cut-outs27of the receiving section35of the second side wall12are in each case connected to one another, as can be seen inFIG.5, so that the cut-outs27of the receiving sections35of a side wall11,12together form one cut-out27per side wall11,12. The respective cut-out27extends over almost the entire length of the respective side wall11,12.

The cut-outs27of the receiving sections35are formed on a lower edge37of the base frame10. The flange parts16can therefore be fastened to the base frame10from below along a mounting direction M. The flange parts16can thus be fastened on the base frame10counter to the insertion direction E of the modules200into the interior15of the base frame10.

The receiving sections35each have a bearing face38above their slot-like cut-out27. The bearing faces38are each molded-in on the outer side36of the base frame10, by the bearing faces38each forming a kind of cut-out on the outer side36of the base frame10. In the mounted position, the central section21of the respective wall section16rests flat against the bearing face38. The bearing faces38are each delimited by two opposite inner edges41,42, wherein, in the mounted position, the outer edges22,23of the respective flange part16adjoin the inner edges41,42in a positive-locking manner. The inner edges41,42thus have a curved shape like the outer edges22,23. The inner edges41,42are preferably designed to be high enough that, in the mounted state, the flange parts16terminate flush with the outer side36of the base frame10. By means of the inner edges41,42, the bearing face38of the receiving sections35is arranged offset relative to the outer side36of the base frame10in each case in the direction of the interior15of the base frame10.

Above the bearing face38, the receiving sections35each have an opening39which, starting from an upper edge40of the base frame10, extends into the respective side wall11,12of the base frame10. In the mounted position of the flange parts16, the fastening region30or the head region20of the respective flange part16overlap the opening39at least in some regions. The fastening tabs31,32can project into the opening39. In the area of the opening39, the fastening tabs31,32can retain the modules200by the fastening tabs31,32resting on the projection elements210of the modules200, which project into the opening39, as can be seen in particular inFIG.6.

As can be seen in particular inFIG.2andFIG.7, the openings39on the first side wall11have a greater width than the openings39on the second side wall12.

FIG.3shows the mounting of one of the flange parts16on the base frame10by the flange part16being inserted into the slot-like cut-out27in the mounting direction M, wherein especially the two shoulder surfaces25,26of the foot region19are inserted into the slot-like cut-out27and thus engage in the slot-like cut-out27. With its central section21, the flange part16slides along the bearing face38. The flange parts16are inserted far enough in that the fastening element28of the foot region19is hooked into the opening29on the base frame10, as can be seen inFIG.4. In this mounted position, the head region20or the fastening region30of the flange part16is located in the region of the opening39in order to overlap it at least in some regions.

When the flange parts16are mounted on the base frame10, the modules200can be inserted into the interior15of the base frame10in the insertion direction E. In this case, the modules200slide along with their projection elements210on the upper edges34of the fastening tabs31,32, as a result of which these fastening tabs, and thus the fastening region30of the respective flange part16, spring outwards in order to allow the projection elements210to pass by at the fastening tabs31,32. When the modules200are guided past the fastening tabs31,32, these can spring back in the direction of the interior15until they rest on the projection element210at the top, as can be seen inFIGS.6and7. In this position, the projection elements210are each covered at the end face by the flange part16assigned to them, especially from the central section21of the flange part16, as can be seen, for example, inFIGS.6and7.

FIGS.8and9show a similar embodiment to the embodiment shown inFIGS.1a,1band2to7, wherein here only the shape of the fastening tabs31,32is designed differently, because here the fastening tabs31,32are bent at an angle α≥180° to the outer edges22,23of the flange part16. In the embodiment shown inFIGS.8and9, the fastening tabs31,32of a flange part16are to be bent toward one another.

FIG.10further shows the arrangement of an identification element43in the area of the flange part16. The identification element43is arranged at the foot region19on the flange part16. Here, the identification element43is fastened to the foot region19of the flange part16by an adhesive connection.

FIGS.11and12show an embodiment in which the two flange parts16arranged on a side wall12are integrally connected to one another. The two flange parts16are formed integrally with one another at their foot region19. The flange parts16are integrally connected to one another via the shoulder surfaces25,26of the foot regions19.

The cut-out26extends here over the two receiving sections35of the side wall12and thus over almost the entire length of the side wall12. The integrally formed flange parts16can thus be inserted simultaneously into the cut-out26via their integrally formed foot regions19and thus be mounted on the base frame10or on the side wall12of the base frame10.

While subject matter of the present disclosure has been illustrated and described in detail in the drawings and foregoing description, such illustration and description are to be considered illustrative or exemplary and not restrictive. Any statement made herein characterizing the invention is also to be considered illustrative or exemplary and not restrictive as the invention is defined by the claims. It will be understood that changes and modifications may be made, by those of ordinary skill in the art, within the scope of the following claims, which may include any combination of features from different embodiments described above.

The terms used in the claims should be construed to have the broadest reasonable interpretation consistent with the foregoing description. For example, the use of the article “a” or “the” in introducing an element should not be interpreted as being exclusive of a plurality of elements. Likewise, the recitation of “or” should be interpreted as being inclusive, such that the recitation of “A or B” is not exclusive of “A and B,” unless it is clear from the context or the foregoing description that only one of A and B is intended. Further, the recitation of “at least one of A, B and C” should be interpreted as one or more of a group of elements consisting of A, B and C, and should not be interpreted as requiring at least one of each of the listed elements A, B and C, regardless of whether A, B and C are related as categories or otherwise. Moreover, the recitation of “A, B and/or C” or “at least one of A, B or C” should be interpreted as including any singular entity from the listed elements, e.g., A, any subset from the listed elements, e.g., A and B, or the entire list of elements A, B and C.

LIST OF REFERENCE SIGNS

100Holding frame10Base frame11First side wall12Second side wall13First end wall14Second end wall15Interior16Flange part17Outer surface18Inner surface19Foot region20Head region21Central section22Outer edge23Outer edge24Connection region25Shoulder surface26Shoulder surface27Cut-out28Fastening element29Opening30Fastening region31Fastening tab32Fastening tab33Lower edge34Upper edge35Receiving section36Outer side37Lower edge38Bearing face39Opening40Upper edge41Inner edge42Inner edge43Identification element200Module210Projection elementE Insertion directionM Mounting directionBFFoot region widthBMCentral section widthBKHead region width