CA1175582A - Magazine for plug-in electrical assemblies - Google Patents
Magazine for plug-in electrical assembliesInfo
- Publication number
- CA1175582A CA1175582A CA000399481A CA399481A CA1175582A CA 1175582 A CA1175582 A CA 1175582A CA 000399481 A CA000399481 A CA 000399481A CA 399481 A CA399481 A CA 399481A CA 1175582 A CA1175582 A CA 1175582A
- Authority
- CA
- Canada
- Prior art keywords
- openings
- magazine
- carrier
- projections
- carriers
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/14—Mounting supporting structure in casing or on frame or rack
- H05K7/1422—Printed circuit boards receptacles, e.g. stacked structures, electronic circuit modules or box like frames
- H05K7/1424—Card cages
- H05K7/1425—Card cages of standardised dimensions, e.g. 19"-subrack
Landscapes
- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Packaging Frangible Articles (AREA)
Abstract
ABSTRACT
In a magazine for plug-in electrical assemblies, guide bars (4) for the assemblies (1) are supported in openings (8) of horizontally arranged U-shaped carriers (5). The openings (8) are arranged in a continuous row and aligned in pairs in the side walls of the carrier (5). At its end, the carrier (5) is cut off approximately along the centre line of a pair of recesses so as to form projections (13) which project into corresponding openings (10) in a side plate (7) of the magazine. By means of resilient engaging hooks, the guide bars (4) engage into the openings (8) of the carriers (5). Between the assem-blies (1) there are arranged individual support plates (18) which engage by means of upper and lower projections (19, 20) into the openings (8) of upper and lower carriers and are secured therein by means of lateral support lugs (21) and additional locking elements (e.g. 23). It was hitherto common to design the openings which accommodate the guide bars as saw-tooth notches in the longitudinal edges. Since these openings are not suitable for accommodat-ing plug-in nuts and for forming lateral projections, the projections and open-ings for the plug-in nuts had to be produced by a separate punching step.
In a magazine for plug-in electrical assemblies, guide bars (4) for the assemblies (1) are supported in openings (8) of horizontally arranged U-shaped carriers (5). The openings (8) are arranged in a continuous row and aligned in pairs in the side walls of the carrier (5). At its end, the carrier (5) is cut off approximately along the centre line of a pair of recesses so as to form projections (13) which project into corresponding openings (10) in a side plate (7) of the magazine. By means of resilient engaging hooks, the guide bars (4) engage into the openings (8) of the carriers (5). Between the assem-blies (1) there are arranged individual support plates (18) which engage by means of upper and lower projections (19, 20) into the openings (8) of upper and lower carriers and are secured therein by means of lateral support lugs (21) and additional locking elements (e.g. 23). It was hitherto common to design the openings which accommodate the guide bars as saw-tooth notches in the longitudinal edges. Since these openings are not suitable for accommodat-ing plug-in nuts and for forming lateral projections, the projections and open-ings for the plug-in nuts had to be produced by a separate punching step.
Description
- 11755~Z
The present invention relates to a magazine for the accommodation of plug-in electrical assemblies which are supported in guide bars which rest on U-shaped carriers extending transversely of said guide bars.
It is already known to support vertically-arranged flat assemblies in guide bars which are themselves supported in openings formed in horizontal carrier members of a magazine. The openings are uniformly distributed along the carriers in accordance with the required spacing of the assemblies.
The carriers are made of flat material which is sub-sequently bent in*o a U-shape and are completely provided with the openings prior to the bending step. In this state, they are supplied by the metre and can be cut to any desired length depending upon the width of the magazine. The openings which serve to accommodate the guide bars consist of saw-tooth ~; notches in the side edges of the carrier, or as apertures in the curved edges thereof.
In order to increase the mechanical stability of the assembly frame, individual support plates are arranged between a respective pair of adjacent assemblies parallel thereto and are fixed to the carriers. The support plates have openings therein, the dimensions of which correspond to the cross-section of the carriers and through which the carriers are passed. The lateral fixing of the support plates is effected by ~; `
1~7S~Z
means of a connecting member which is screwed to the support plate and engages in one of the openings in - the carrier.
Pt theirends the carriers are attached to the side plates of the magazine, by means of projections on the ends which engage into corresponding openings in the side plates. At their ends, the U-shaped carriers have openings in their side walls into which a -- respective plug-in nut is inserted. This plug-in nut is secured by means of a screw to the side plates of the magazine so that the carrier is securely held in contact with the side plate. Prior to the bending of the carriers, the openings for the plug-in nuts and the end projections are formed, for example, by punching.
The guide bars for the assemblies have a grooved guide track. ûn the side opposite to the guide groove, the guide bar is provided with rigid lug-shaped pro-tuberances which project into corresponding openings in the carriers and engage behind the latter. ûn the installation of the guide bars these must be moved in the longitudinal direction. In its final position each guide rail is secured by means of a stop means.
It is an object ofthe present invention to provide such a magazine with which both the production of the magazine frame and the assembly thereof is simplified.
According to the invention, there is provided a 1~75S~Z
magazine for the accommodation of plug-in electrical assemblies which are supported in guide bars which rest on U-shaped longitudinally extending carriers which extend transversely to the guide bars with the side walls of the U horizontal, and which engage by means of lug-shaped protuberances into openings provided in a uniform and continuous series along the carriers, and which at their ends are fixed to side plates ;-- of the magazine, said openings being arranged in aligned pairs in the two walls of each carrier, and that at each end, the carrier is provided with projections formed by cutting the carrier transversely through a pair of aligned openings, which projections are inserted into correspondingly shaped apertures in the respective side plate of the magazine and are secured thereto by means of a screw passing through the side plate and screwed with a plug-in nut inserted through a pair of aligned openings in the carrier walls.
~ The design of the pro3ections allows the carrier to be cut to length in the region of a pair of openings in a simple severing step, as a result of which the projections are naturally formed. The design of the openings as apertures in the side walls of the carriers permits an appropriately shaped plug-in nut to be used, without any need to provide additional openings for this purpose. This means that, apart from the severing step, no additional operations are needed ~ 5 - 1175 5~ Z
to form the carrier ends. The carrier can be separated either in the unbent state or in the bent state, for example, by sawing. In this case, it is possible to supply the bar material in the bent state.
Conveniently, the height of the projections may be approximately equal to half the width of an opening in the carrier. In this case, it is possible to separate the unbent carrier using a shearing process ,-~ without waste along a line extending approximately in the centre of the openings and thus to form the pro-jections.
The lug-shaped protuberances of the guide bar may consist of a pair of resilient engaging hooks which project through the openings in a wall of the carrier and engage behind the carrier wa~l. The protuberances~
are designed to be spring loaded outwardly at right angles to the longitudinal direction of the guide bar, the two protuberances of a pair engaging into adjacent ` openings in the carrier wall, the width of the openings in the carrier wall in the longitudinal direction of the carrier, corresponding to the thickness of the engaging hooks.
With such a construction, the guide bars can be attached to the carriers by a simple rectllinear movement. The engaging hooks pro3ect towards the openings and, on insertion, are laterally deflected inwardly. In their end position they spring back and engage behind the carriers. The deflection of the engaging hooks is effected at right angles to the longitudinal direction of the guide bar. Since two engaginghoDks simultaneously spring outwardly relative to one another on a guide bar, the lateral spring forces are cancelled out. Thus, there is no danger of the guide bar tipping or rotating during assembly. As a result of the apertured formation of the openings and the adaptation of the thickness of the engaging hooks to the corresponding width dimension of the opening, it is possible to attach the guide bar to the carrier not only in the transverse direction, but also in the longitudinal direction.
In the known constructions of the prior art, during insertion and removal, the guide bar must be bent so 8S to allow its stop surface to slide past the corresponding counter stop surface of the carrier.
This bending requires some skill, since excessive bending results in the danger of fracture, whilst in-
The present invention relates to a magazine for the accommodation of plug-in electrical assemblies which are supported in guide bars which rest on U-shaped carriers extending transversely of said guide bars.
It is already known to support vertically-arranged flat assemblies in guide bars which are themselves supported in openings formed in horizontal carrier members of a magazine. The openings are uniformly distributed along the carriers in accordance with the required spacing of the assemblies.
The carriers are made of flat material which is sub-sequently bent in*o a U-shape and are completely provided with the openings prior to the bending step. In this state, they are supplied by the metre and can be cut to any desired length depending upon the width of the magazine. The openings which serve to accommodate the guide bars consist of saw-tooth ~; notches in the side edges of the carrier, or as apertures in the curved edges thereof.
In order to increase the mechanical stability of the assembly frame, individual support plates are arranged between a respective pair of adjacent assemblies parallel thereto and are fixed to the carriers. The support plates have openings therein, the dimensions of which correspond to the cross-section of the carriers and through which the carriers are passed. The lateral fixing of the support plates is effected by ~; `
1~7S~Z
means of a connecting member which is screwed to the support plate and engages in one of the openings in - the carrier.
Pt theirends the carriers are attached to the side plates of the magazine, by means of projections on the ends which engage into corresponding openings in the side plates. At their ends, the U-shaped carriers have openings in their side walls into which a -- respective plug-in nut is inserted. This plug-in nut is secured by means of a screw to the side plates of the magazine so that the carrier is securely held in contact with the side plate. Prior to the bending of the carriers, the openings for the plug-in nuts and the end projections are formed, for example, by punching.
The guide bars for the assemblies have a grooved guide track. ûn the side opposite to the guide groove, the guide bar is provided with rigid lug-shaped pro-tuberances which project into corresponding openings in the carriers and engage behind the latter. ûn the installation of the guide bars these must be moved in the longitudinal direction. In its final position each guide rail is secured by means of a stop means.
It is an object ofthe present invention to provide such a magazine with which both the production of the magazine frame and the assembly thereof is simplified.
According to the invention, there is provided a 1~75S~Z
magazine for the accommodation of plug-in electrical assemblies which are supported in guide bars which rest on U-shaped longitudinally extending carriers which extend transversely to the guide bars with the side walls of the U horizontal, and which engage by means of lug-shaped protuberances into openings provided in a uniform and continuous series along the carriers, and which at their ends are fixed to side plates ;-- of the magazine, said openings being arranged in aligned pairs in the two walls of each carrier, and that at each end, the carrier is provided with projections formed by cutting the carrier transversely through a pair of aligned openings, which projections are inserted into correspondingly shaped apertures in the respective side plate of the magazine and are secured thereto by means of a screw passing through the side plate and screwed with a plug-in nut inserted through a pair of aligned openings in the carrier walls.
~ The design of the pro3ections allows the carrier to be cut to length in the region of a pair of openings in a simple severing step, as a result of which the projections are naturally formed. The design of the openings as apertures in the side walls of the carriers permits an appropriately shaped plug-in nut to be used, without any need to provide additional openings for this purpose. This means that, apart from the severing step, no additional operations are needed ~ 5 - 1175 5~ Z
to form the carrier ends. The carrier can be separated either in the unbent state or in the bent state, for example, by sawing. In this case, it is possible to supply the bar material in the bent state.
Conveniently, the height of the projections may be approximately equal to half the width of an opening in the carrier. In this case, it is possible to separate the unbent carrier using a shearing process ,-~ without waste along a line extending approximately in the centre of the openings and thus to form the pro-jections.
The lug-shaped protuberances of the guide bar may consist of a pair of resilient engaging hooks which project through the openings in a wall of the carrier and engage behind the carrier wa~l. The protuberances~
are designed to be spring loaded outwardly at right angles to the longitudinal direction of the guide bar, the two protuberances of a pair engaging into adjacent ` openings in the carrier wall, the width of the openings in the carrier wall in the longitudinal direction of the carrier, corresponding to the thickness of the engaging hooks.
With such a construction, the guide bars can be attached to the carriers by a simple rectllinear movement. The engaging hooks pro3ect towards the openings and, on insertion, are laterally deflected inwardly. In their end position they spring back and engage behind the carriers. The deflection of the engaging hooks is effected at right angles to the longitudinal direction of the guide bar. Since two engaginghoDks simultaneously spring outwardly relative to one another on a guide bar, the lateral spring forces are cancelled out. Thus, there is no danger of the guide bar tipping or rotating during assembly. As a result of the apertured formation of the openings and the adaptation of the thickness of the engaging hooks to the corresponding width dimension of the opening, it is possible to attach the guide bar to the carrier not only in the transverse direction, but also in the longitudinal direction.
In the known constructions of the prior art, during insertion and removal, the guide bar must be bent so 8S to allow its stop surface to slide past the corresponding counter stop surface of the carrier.
This bending requires some skill, since excessive bending results in the danger of fracture, whilst in-
2~ sufficient bending can result in a failure of thelocking or unlocking process.
Preferably, the guide bar is provided with a centrallongitudinal slot between the engaging hooks.
This permits the engagement of the latter in the openings to be released by simply compressing the guide bar in the region of the longitudinal slot.
The engaging hooks of the guide bar are preferably 11755~3Z
designed and arranged to be symmetrical about a longitudinal groove in the bar in which an assembly is guided, the centre of the groove lying centrally between two immediately adjacent openings i~ the 5 carrier when the guide bar is fixed in position. In this way, it is possible to use the same guide bar for either the upper or the lower guidance of an assembly. The symmetrical arrangement of the engaging hooks means that there is no lateral dis-placement of the guide track. ~
Preferably for mechanical stabilisation, themagazine is provided with at least one support plate located between and parallel to the assemblies, the - or each said plate being provided with projections which pass through the openings in the carrier and have laterally arranged lugs which engage behind the carrier,theprojections contacting the side walls of the openings behind which the lugs engage and being held in this position by locking means. As a con-sequence of this, it is pos~ible to attach the supportsurface directly to the carriers. The complicated screwing process and the connecting components previously needed for attachment to the carriers are no longer reqùired. A lateral edge of the support plate is applied to the carrier. The projections which extend from this lateral edge are easily passed through the associated opening and engage behind the - B _ ~ ~5 S~ Z
carrier by means of the lateral lugs. These àre pressed by spring pressure against the side wall of the opening and are thus maintained in their position - relative to the carrier. However, it is also possible to arrange lateral luos on a projection on both sides of the Dpening. The lugs pointing in the same direction grip the side wall of the opening on both sides. The height of the projection is arranged -- to be such that initially it csn be inserted into the opening to a greater depth than is needed for fixing. For example, all the projections on the upper side of the support plate may be designed in this way. This allows the upper projections of the initially oblique support plate to be first inserted into the openings in the upper carriers to such a depth that the shorter lower projections are located above the lower carriers. These are then inserted into the corresponding lower openings until the lower edge of ;- the support plate rests on the lower carrier. In this position the longer upper projections still project through the openings in the upper carriers. In this case, the width of the openings is greater than- the height of the lateral lugs of the projections plus the thickness of the support plate. A particular advantage consists in that now the support plate can be effortlessly inserted into the already produced assembly frame. It is also possible to move the li755~
support plate to a different position in the event of a modification. It is possible to apply the spring force required for the lateral application of the projections of the support plate hy means of bent tongues on the support plate.
However, if desired, separate locking elements in the form of pressure springs (for example, bent to shape from spring wire) may be snapped into the openings.
In this way, it is possible to secure the positions of the support plates separately from their insertion into the assembly frame. This simplifies assembly and, in particular, the dismantling of the support plate. The pressure springs can be successively inserted or removed. They can consist of simple wire clips which are clamped between the other side wall of the opening and the projection of the support plate in resilient fashion. The pre~sure springs can easily be inserted and removed without additional aids.
; The invention will now be further described with reference to the drawings, in which :-Figure 1 is a schematic perspective view of amagazine which serves to accommodate plug-in electrical assemblies, immediately prior to assembly, where the direction of assembly of the individual components being indicated by dash-dotted lines;
Figure 2 is a plan view of a part of the magazine of Figure l;
- l~ 117S58Z
Figure 3 is an end view of the part of the magazine shown in Figure 2;
Figure 4 is an end view of another part of the magazine of Figure 1 on an enlarged scale;
Figure 5 is a plan view of the part shown in Figure 4;
Figure 6 is an enlarged section taken along the line VI-VI of Figure 4;
!' Figure 7 is a side view of a support plate forming a part of the magazine of Figure l;
Figure 8 is a section taken along the line VIII-VIII
of Figure l; and Figure 9 is a section taken along the line IX-IX
of Figure 1.
Referring to Figure 1, plug-in electrical assemblies 1 housed in a magazine can be connected by way of rear wall plugs 2 by means of rear wall wiring. This rear wall wiring comprises a printed circuit board 3 which extends over and forms the entire rear wall of the magazine. The assemblies 1 are supported in guide bars 4 which are fixed to horizontally-arranged, U-shaped carriers 5 which extend at right angles to the guide bars. At their ends, the carriers are attached by means of fixing screws 6 to side plates 7 of the magazine. As shown in Figures 2 and 3, each U-shaped carrier 5 is provided with a continuous series of openings 8 which are in 17S5~Z
the form of rectangular apertures and which are distributed in a grid arrangement. These openings 8 are arranged in the side walls of the carrier 5 in aligned pairs. At its end, the carrier is cut off approximately at the centre of one of the pairs of openings. The residual parts of the cross-section of the carrier 5, at this point form projections 9 at the end of the carrier 5. At its end, the carrier is - permanently connected to the side plate 7. The projections 9 project into corresponding openings 10 in the side plate 7. A flat plug-in nut 11 is inserted into the adjacent pair of recesses and the fixing screw 6 is firmly screwed into the plug-in nut 11 from the outside of the side plate 7 snd in this way holds the carrier 5 sgainst the side plate 7. This ensures thst the projections 9 cannot be pulled out of the openings 10.
As shown in Figures 4 to 6, esch guide bsr 4 i9 - provided with a longitudinal groove 12 which receives the edge of the circuit board of the sssembly 1 (Figure 1).
The guide bar 4 is attached to the carrier 5 (indicsted by dssh-dotted lines) of the sssembly msgazine. The guide bar rests on one of the side wslls of the carrier 5. In this region, it has two engsging hooks 14 which project throughtwo adjacent openings 8 of the carrier 5 snd by mesns of lateral lugs 15 engsge behind the respective side walls of the c~rrier 5. The engaging hooks 14 are arranged symmetrically with respect to the central axis of the longitudinal groove 12 of the guide bar 4. The lateral lugs 15 are arranged on the outer sides of the hooks 14 which face away from one another. In the vicinity of the engaging hooks 14, the guide bar 4 is provided with a central longitudinal slot 16 which runs bet~een the two engaging hooks 14. On the guide bar 4, there ; are thus formed two relatively narrow flexible longitudinal arms 17 separated by the slot 16 which support the engaging hooks 14. When inserted into the openings 8 of the carriers 5, the engaging hooks 14 are laterally deflected. This deflection is transferred to the longitudinal arms 17 so that the engaging hooks 14 can themselves be of rigid design and therefore extremely compact.
The two adjacent engaging hooks 14 are spring loaded against the outer walls remote from one another, of the two adjacent openings 8. The width of the 2û engaging hooks 14 in the longitudinal direction of - the guide bar 4 corresponds to the length of the openings 8. In this way, the guide bar 4 is precisely fixed in its position relative to the carrier 5. In order to release the guide bar 4, it is merely necessary to compress the longitudinal arms 17. This process is effected from the insertion end which has easy access and thus can be carried out without effort. It is even simpler to effect the insertion by means of a simple insertion movement. Because of its symmetrical construction, the guide bar 4 can be used both for the upper and the lower guiding of the assembly i. Since an opening 8 is provided for each of the two engaging hooks 14, the openings 8 along the carrier 5 are more finely spaced, which facilitates a greater degree of variability in the stoc~ing of the assembly magazine - with assemblies l of different widths.
Figures 7, 8 and 9 illustrate a support plate 18 for mechanically stabilising the assembly magazine. The support plate 18 is arranged between the assemblies 1 (Figure 1) and extends parallel thereto. It is permanently connected to the carriers 5, which thus -15 serve both to secure the guide bars 4 for the assemblies 1 and to carry the support plate 18. At its top and bottom edges the support plate has pro-jections 19, 20 respectively which engage into the -- openings 8 of a respective carrier 5, as shown in Figure 7. The projections 19 and 20 are provided with laterally extending support lugs 21, 22. On the side of the lateral support lugs 21 and 22 the pro-jections contact the corresponding inner walls of the respective openings 8 into which they engage. They are maintained in this position by means of pressure springs 23 (Figure 8) which are sprung into the opening 8.
As a result, the support lugs 21 reliably engage behind 14 ~ 17 5 58Z
the side wall of the U-shaped carrier 5 which faces towards the support plate 18.
The projections 19 and 20 have different heights.
When the lower edse of the support plate 18 rests on the lower carriers 5 the length of the upper projections 19 is such that the upper edge of the support plate 18 and the upper carriers 5 are spaced apart by a distance which is greater than the height of the lower pro-~ jections 2û. In this way, it is possible to install a support plate 18 even after the completion of the`assembly magazine. The additional lateral support lugs 22 of the upper projections 19 are at approximately the same level as the support lugs 21. The side wall of the upper carriers 5 which faces towards the support plate lB, is gripped by the two support lugs 21 and 22.
As a result the support plats 18 is also fixed in its position relative to the upper carriers 5. The width of the projections 19 and 20 is matched to the width of the openings 8 in the carriers 5 so that the mutual positioning is also fixed in this direction.
Preferably, the guide bar is provided with a centrallongitudinal slot between the engaging hooks.
This permits the engagement of the latter in the openings to be released by simply compressing the guide bar in the region of the longitudinal slot.
The engaging hooks of the guide bar are preferably 11755~3Z
designed and arranged to be symmetrical about a longitudinal groove in the bar in which an assembly is guided, the centre of the groove lying centrally between two immediately adjacent openings i~ the 5 carrier when the guide bar is fixed in position. In this way, it is possible to use the same guide bar for either the upper or the lower guidance of an assembly. The symmetrical arrangement of the engaging hooks means that there is no lateral dis-placement of the guide track. ~
Preferably for mechanical stabilisation, themagazine is provided with at least one support plate located between and parallel to the assemblies, the - or each said plate being provided with projections which pass through the openings in the carrier and have laterally arranged lugs which engage behind the carrier,theprojections contacting the side walls of the openings behind which the lugs engage and being held in this position by locking means. As a con-sequence of this, it is pos~ible to attach the supportsurface directly to the carriers. The complicated screwing process and the connecting components previously needed for attachment to the carriers are no longer reqùired. A lateral edge of the support plate is applied to the carrier. The projections which extend from this lateral edge are easily passed through the associated opening and engage behind the - B _ ~ ~5 S~ Z
carrier by means of the lateral lugs. These àre pressed by spring pressure against the side wall of the opening and are thus maintained in their position - relative to the carrier. However, it is also possible to arrange lateral luos on a projection on both sides of the Dpening. The lugs pointing in the same direction grip the side wall of the opening on both sides. The height of the projection is arranged -- to be such that initially it csn be inserted into the opening to a greater depth than is needed for fixing. For example, all the projections on the upper side of the support plate may be designed in this way. This allows the upper projections of the initially oblique support plate to be first inserted into the openings in the upper carriers to such a depth that the shorter lower projections are located above the lower carriers. These are then inserted into the corresponding lower openings until the lower edge of ;- the support plate rests on the lower carrier. In this position the longer upper projections still project through the openings in the upper carriers. In this case, the width of the openings is greater than- the height of the lateral lugs of the projections plus the thickness of the support plate. A particular advantage consists in that now the support plate can be effortlessly inserted into the already produced assembly frame. It is also possible to move the li755~
support plate to a different position in the event of a modification. It is possible to apply the spring force required for the lateral application of the projections of the support plate hy means of bent tongues on the support plate.
However, if desired, separate locking elements in the form of pressure springs (for example, bent to shape from spring wire) may be snapped into the openings.
In this way, it is possible to secure the positions of the support plates separately from their insertion into the assembly frame. This simplifies assembly and, in particular, the dismantling of the support plate. The pressure springs can be successively inserted or removed. They can consist of simple wire clips which are clamped between the other side wall of the opening and the projection of the support plate in resilient fashion. The pre~sure springs can easily be inserted and removed without additional aids.
; The invention will now be further described with reference to the drawings, in which :-Figure 1 is a schematic perspective view of amagazine which serves to accommodate plug-in electrical assemblies, immediately prior to assembly, where the direction of assembly of the individual components being indicated by dash-dotted lines;
Figure 2 is a plan view of a part of the magazine of Figure l;
- l~ 117S58Z
Figure 3 is an end view of the part of the magazine shown in Figure 2;
Figure 4 is an end view of another part of the magazine of Figure 1 on an enlarged scale;
Figure 5 is a plan view of the part shown in Figure 4;
Figure 6 is an enlarged section taken along the line VI-VI of Figure 4;
!' Figure 7 is a side view of a support plate forming a part of the magazine of Figure l;
Figure 8 is a section taken along the line VIII-VIII
of Figure l; and Figure 9 is a section taken along the line IX-IX
of Figure 1.
Referring to Figure 1, plug-in electrical assemblies 1 housed in a magazine can be connected by way of rear wall plugs 2 by means of rear wall wiring. This rear wall wiring comprises a printed circuit board 3 which extends over and forms the entire rear wall of the magazine. The assemblies 1 are supported in guide bars 4 which are fixed to horizontally-arranged, U-shaped carriers 5 which extend at right angles to the guide bars. At their ends, the carriers are attached by means of fixing screws 6 to side plates 7 of the magazine. As shown in Figures 2 and 3, each U-shaped carrier 5 is provided with a continuous series of openings 8 which are in 17S5~Z
the form of rectangular apertures and which are distributed in a grid arrangement. These openings 8 are arranged in the side walls of the carrier 5 in aligned pairs. At its end, the carrier is cut off approximately at the centre of one of the pairs of openings. The residual parts of the cross-section of the carrier 5, at this point form projections 9 at the end of the carrier 5. At its end, the carrier is - permanently connected to the side plate 7. The projections 9 project into corresponding openings 10 in the side plate 7. A flat plug-in nut 11 is inserted into the adjacent pair of recesses and the fixing screw 6 is firmly screwed into the plug-in nut 11 from the outside of the side plate 7 snd in this way holds the carrier 5 sgainst the side plate 7. This ensures thst the projections 9 cannot be pulled out of the openings 10.
As shown in Figures 4 to 6, esch guide bsr 4 i9 - provided with a longitudinal groove 12 which receives the edge of the circuit board of the sssembly 1 (Figure 1).
The guide bar 4 is attached to the carrier 5 (indicsted by dssh-dotted lines) of the sssembly msgazine. The guide bar rests on one of the side wslls of the carrier 5. In this region, it has two engsging hooks 14 which project throughtwo adjacent openings 8 of the carrier 5 snd by mesns of lateral lugs 15 engsge behind the respective side walls of the c~rrier 5. The engaging hooks 14 are arranged symmetrically with respect to the central axis of the longitudinal groove 12 of the guide bar 4. The lateral lugs 15 are arranged on the outer sides of the hooks 14 which face away from one another. In the vicinity of the engaging hooks 14, the guide bar 4 is provided with a central longitudinal slot 16 which runs bet~een the two engaging hooks 14. On the guide bar 4, there ; are thus formed two relatively narrow flexible longitudinal arms 17 separated by the slot 16 which support the engaging hooks 14. When inserted into the openings 8 of the carriers 5, the engaging hooks 14 are laterally deflected. This deflection is transferred to the longitudinal arms 17 so that the engaging hooks 14 can themselves be of rigid design and therefore extremely compact.
The two adjacent engaging hooks 14 are spring loaded against the outer walls remote from one another, of the two adjacent openings 8. The width of the 2û engaging hooks 14 in the longitudinal direction of - the guide bar 4 corresponds to the length of the openings 8. In this way, the guide bar 4 is precisely fixed in its position relative to the carrier 5. In order to release the guide bar 4, it is merely necessary to compress the longitudinal arms 17. This process is effected from the insertion end which has easy access and thus can be carried out without effort. It is even simpler to effect the insertion by means of a simple insertion movement. Because of its symmetrical construction, the guide bar 4 can be used both for the upper and the lower guiding of the assembly i. Since an opening 8 is provided for each of the two engaging hooks 14, the openings 8 along the carrier 5 are more finely spaced, which facilitates a greater degree of variability in the stoc~ing of the assembly magazine - with assemblies l of different widths.
Figures 7, 8 and 9 illustrate a support plate 18 for mechanically stabilising the assembly magazine. The support plate 18 is arranged between the assemblies 1 (Figure 1) and extends parallel thereto. It is permanently connected to the carriers 5, which thus -15 serve both to secure the guide bars 4 for the assemblies 1 and to carry the support plate 18. At its top and bottom edges the support plate has pro-jections 19, 20 respectively which engage into the -- openings 8 of a respective carrier 5, as shown in Figure 7. The projections 19 and 20 are provided with laterally extending support lugs 21, 22. On the side of the lateral support lugs 21 and 22 the pro-jections contact the corresponding inner walls of the respective openings 8 into which they engage. They are maintained in this position by means of pressure springs 23 (Figure 8) which are sprung into the opening 8.
As a result, the support lugs 21 reliably engage behind 14 ~ 17 5 58Z
the side wall of the U-shaped carrier 5 which faces towards the support plate 18.
The projections 19 and 20 have different heights.
When the lower edse of the support plate 18 rests on the lower carriers 5 the length of the upper projections 19 is such that the upper edge of the support plate 18 and the upper carriers 5 are spaced apart by a distance which is greater than the height of the lower pro-~ jections 2û. In this way, it is possible to install a support plate 18 even after the completion of the`assembly magazine. The additional lateral support lugs 22 of the upper projections 19 are at approximately the same level as the support lugs 21. The side wall of the upper carriers 5 which faces towards the support plate lB, is gripped by the two support lugs 21 and 22.
As a result the support plats 18 is also fixed in its position relative to the upper carriers 5. The width of the projections 19 and 20 is matched to the width of the openings 8 in the carriers 5 so that the mutual positioning is also fixed in this direction.
Claims (9)
PROPERTY OR PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS:
1. A magazine for the accommodation of plug-in electrical assem-blies which are supported in guide bars which rest on U-shaped, longitudinally extending carriers which extend transversely to the guide bars with the side walls of the U horizontal, and which engage by means of lug-shaped protuber-ances into openings provided in a uniform and continuous series along the carriers, and which at their ends are fixed to side plates of the magazine, said openings being arranged in aligned pairs in the two walls of each carrier, and that at each end, the carrier is provided with projections formed by cut-ting the carrier transversely through a pair of aligned openings, which pro-jections are inserted into correspondingly shaped apertures in the respective side plate of the magazine and are secured thereto by means of a screw passing through the side plate and screwed into a plug-in nut inserted through a pair of aligned openings in the carrier walls.
2. A magazine as claimed in Claim 1, wherein the height of said projections is approximately equal to half the width of said openings.
3. A magazine as claimed in Claim 1, wherein the lug-shaped pro-tuberances of said guide bars consist of a pair of resilient engaging hooks which project through openings in one wall of a carrier and engage behind the carrier, the engaging hooks being spring loaded outwardly at right angles to the longitudinal direction of the guide bars, two said engaging hooks spring loaded in opposite directions engaging into two adjacent openings in the carrier, and the internal width of the openings in the longitudinal direction of the guide bars substantially corresponding to the thickness of the engaging hooks.
4. A magazine as claimed in Claim 3, characterized in that said guide bars are provided with a central longitudinal slot between each pair of engaging hooks.
5. A magazine as claimed in Claim 3, wherein each of a pair of engaging hooks has a laterally projecting lug, the lugs on the pair of hooks facing away from one another.
6. A magazine as claimed in Claim 3, 4 or 5, wherein the pairs of engaging hooks of a guide bar are arranged to be symmetrical with respect to a longitudinal groove formed in said guide bar for guiding an assembly therein, the centre line of said groove lying centrally between two immediately adjacent openings of a carrier.
7. A magazine as claimed in Claim 1, wherein at least one support plate for mechanically stabilizing the magazine is provided between adjacent assemblies, the upper and lower edges of the or each said support plate having projections which fit into the openings in upper and lower carriers respectively, said projections having lateral support lugs which engage behind the carrier wall, and said projections contacting the side wall of the openings into which they are fitted and being held in this position by means of locking elements.
8. A magazine as claimed in Claim 7, wherein said locking elements are in the form of separate pressure springs which are snapped into the respect-ive openings.
9. A magazine as claimed in Claim 8, wherein the pressure springs are bent to shape from spring wire.
Applications Claiming Priority (8)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEP3112505.0 | 1981-03-30 | ||
| DEP3112527.1 | 1981-03-30 | ||
| DE19813112620 DE3112620C2 (en) | 1981-03-30 | 1981-03-30 | Frame for slide-in electrical assemblies |
| DE3112527A DE3112527C2 (en) | 1981-03-30 | 1981-03-30 | Magazine for insertable electrical assemblies |
| DE19813112505 DE3112505C2 (en) | 1981-03-30 | 1981-03-30 | Frame for slide-in electrical assemblies |
| DEP3112620.0 | 1981-03-30 | ||
| DE19818109388 DE8109388U1 (en) | 1981-03-30 | 1981-03-30 | Frame for slide-in electrical assemblies |
| DEG8109388.8 | 1981-03-30 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1175582A true CA1175582A (en) | 1984-10-02 |
Family
ID=27432654
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000399481A Expired CA1175582A (en) | 1981-03-30 | 1982-03-26 | Magazine for plug-in electrical assemblies |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP0062108B1 (en) |
| AU (1) | AU559724B2 (en) |
| CA (1) | CA1175582A (en) |
| GR (1) | GR78359B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU593667B2 (en) * | 1986-07-17 | 1990-02-15 | Alcatel Australia Limited | Sub-rack arrangement |
| US4899254A (en) * | 1987-07-22 | 1990-02-06 | Tandem Computers Incorporated | Electronic module interconnection system |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1065158A (en) * | 1964-09-14 | 1967-04-12 | Gen Electric Co Ltd | Improvements in or relating to electrical apparatus |
| DE1271793B (en) * | 1966-08-11 | 1968-07-04 | Siemens Ag | Device unit to accommodate plug-in modules for electrical communications technology |
| DE2714562B2 (en) * | 1977-04-01 | 1980-06-12 | Brown, Boveri & Cie Ag, 6800 Mannheim | Subrack |
-
1981
- 1981-10-28 EP EP19810109142 patent/EP0062108B1/en not_active Expired
-
1982
- 1982-03-26 CA CA000399481A patent/CA1175582A/en not_active Expired
- 1982-03-29 AU AU82120/82A patent/AU559724B2/en not_active Ceased
- 1982-03-29 GR GR67752A patent/GR78359B/el unknown
Also Published As
| Publication number | Publication date |
|---|---|
| EP0062108A1 (en) | 1982-10-13 |
| EP0062108B1 (en) | 1985-05-22 |
| AU559724B2 (en) | 1987-03-19 |
| AU8212082A (en) | 1982-10-07 |
| GR78359B (en) | 1984-09-26 |
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Legal Events
| Date | Code | Title | Description |
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| MKEC | Expiry (correction) | ||
| MKEX | Expiry |