CN1224569A - Plug-in rails for electronic equipment - Google Patents

Abstract

The invention relates to a card guide of the subrack of an electronic device, which guide comprises several rail-like guide parts which extend essentially parallel in the depth direction of the card guide and which are located at a distance from one another in the width direction of the card guide. In order to implement a card guide which is cheap to manufacture and simple to install, and with which it is possible to compensate the difference in the thermal expansion rate of the card guide and the subrack, the card guide is formed of a guide piece several card slots in width. Between its anchoring points in the subrack, the guide piece is equipped with means to compensate for the difference in the thermal expansion rate of the guide and the subrack. These means are bends formed in the walls, the wall deviating from the general plane of the wall at said bends.

Description

The card guide that is used for electronic equipment

Technical field

This mechanical structure that relates generally to the mounting guide rail on a kind of electronic equipment.This electronic equipment generally is meant telecommunication apparatus, more precisely, the present invention relates to the card guide structure in this equipment.

Background technology

Fig. 1 illustrates a kind of existing card guide of conventional telecommunication apparatus.Herein, mounting guide rail comprises a body 10, in this embodiment, body comprises vertical side panel 11 and 12, four substantially horizontal body beam 13-16, each body beam one end links to each other with an angle of side panel, the other end links to each other with the corresponding end of opposed opposite side panel, plate 17 after body also comprised one, on the plate 17 of back, be manufactured with the electronic circuit (not shown), card unit (insert unit) links to each other with telecommunication apparatus by electronic circuit, and mounting guide rail is the part of this telecommunication apparatus.Each plug-in unit board slot all has a terminal box BPC (one of them terminal box only is shown among the figure) on the back plate 17, links to each other with circuit on being positioned at the back plate by its bound cell BU.

The structural key component of mounting guide rail is a guide, and it is in place on mounting guide rail that it is guiding plug-in unit, and has constituted the plug-in unit board slot, and bound cell is placed in the plug-in unit board slot on the mounting guide rail.These guides are shown as a plurality of tracks 18 in the drawings, and they are installed on the end face of lower guide rail beam and on the bottom surface of upper guide rail beam, and are parallel with side panel.Track 18b is installed on the lower guide rail beam, and always towards the top, with its corresponding horizontal rail 18a then with the same position of upper guide rail beam on, towards the below, like this, relative track has just formed plug-in unit board slot BS, and single card unit B U is inserted in the plug-in unit board slot, and can separate with it by pulling.Thereby will notice that usually mounting guide rail comprises a plurality of railway line guiding partss, they are almost parallel on the depth direction Y of mounting guide rail, and each interval is placed on the Width X of mounting guide rail.Single guiding parts comprises a pair of assembly, be positioned on the position of basic correspondence on the mounting guide rail Width, and on the short transverse Z of mounting guide rail the each interval certain distance, therefore, guiding parts and its a pair of assembly have formed card slots BS each other, the electronic card of this electronic equipment can be inserted in the plug-in unit board slot, and can separate (by pulling) with it.

The card unit B U (only having shown one of them among the figure) that is inserted in the mounting guide rail generally has a preceding terminal box FC that card is linked to each other with external device (ED), and the back terminal box BC that the electronic circuit on the plate behind card and the mounting guide rail is linked to each other.Each back terminal box BC be positioned at the back plate on the back plate terminal box BPC at plug-in unit board slot place link to each other.

Above the telecommunication apparatus of described type, can be multiplexer of a charge etc., under usual condition, multiplexer comprises the charge interface card plate that several are parallel.Charging device as phone one class is connected on the card unit by preceding terminal box FC, charge interface card plate by back terminal box BC and afterwards the internal bus etc. of plate terminal box BPC and multiplexer link to each other, internal bus is produced on the back plate of mounting guide rail.

In the following description, the card unit is called plug-in unit, and aforesaid guide is called the plug-in unit guide.

The plug-in unit guide that is installed on the mounting guide rail preferably is made of plastics, because the manufacturing expense of this guide is starkly lower than the guide that metal etc. is made.

But the common shortcoming of plastic guides is that it is different with continuous (metal) mounting guide rail structure coefficient of thermal expansion.The different twisting stresses that can cause plug-in unit of mounting guide rail and guide coefficient of thermal expansion, thus the assembly that is installed on the plug-in unit damaged.Width at mounting guide rail especially is a problem, because be easy to cause the harmful stress of appearance on the plug-in unit in the thermal expansion of this direction.

Existing plastics guide insert is the track of type shown in Figure 1 normally, and it is very narrow at the Width of mounting guide rail, so thermal expansion just can not produce very big problem in this direction.There are two tracks to be installed on the guide rail for each card slots.The installation of plug-in unit guide is manual, and this just means a lot of times of needs, thereby has improved the cost of mounting guide rail.For wide mounting guide rail, can conclude has such shortcoming; For example, for the mounting guide rail that includes 17 card slots, in the installation process of mounting guide rail, just there are 34 guide rails to install by hand.

Summary of the invention

The objective of the invention is to make a kind of plug-in unit guide frame that is used for mounting guide rail, it can eliminate the thermal expansion problem of speaking of previously, and when making mounting guide rail, it makes cheap, simple and convenient assembly.This purpose can the application of the invention the plug-in unit guide member arrangement and reach, this plug-in unit guide member arrangement has the described feature of claims 1 characteristic.

Aim of the present invention is to make guiding parts with plastic material, at Width a plurality of card slots is arranged, and they are installed between the fixing point of mounting guide rail, and mounting guide rail has the parts that can compensate coefficient of thermal expansion difference between guide and the mounting guide rail.

In a most preferred embodiment of the present invention, the plug-in unit guide is narrower than bound cell at the depth direction of plug-in unit, card slots is formed on the mounting guide rail, constitute at the continuous guide of the depth direction of mounting guide rail by two, this method can form a kind of guide, and it was not only cheap but also can be used for the plug-in units of different sizes.

Fig. 2 with reference to the accompanying drawings-7 couple the present invention and most preferred embodiment thereof are illustrated.

Description of drawings

Fig. 1 illustrates the existing mounting guide rail structure of telecommunication apparatus.

Fig. 2 illustrates mounting guide rail structure of the present invention.

Fig. 3 is the stereogram of plug-in unit guide among the present invention.

Fig. 4 is the vertical view of plug-in unit guide of the present invention.

Fig. 5 is the end view of plug-in unit guide of the present invention.

Fig. 6 is the cutaway view that the plug-in unit guide is done along C-C line among Fig. 4.

Fig. 7 illustrates the plug-in unit guide is installed to mounting portion on the mounting guide rail panel.

Embodiment

With reference to Fig. 2-4, plug-in unit guide of the present invention is described in more detail below, wherein Fig. 2 illustrates the whole erection guide rail, and Fig. 3-7 illustrates the structure of single plug-in unit guide.

Fig. 2 illustrates mounting guide rail 20, wherein comes the indication plug unit guide with label symbol A and B.Plug-in unit guide shown in Figure 2 is consistent with the present invention, but they lack the sweep that is mainly used in thermal expansion, and this point is illustrated among the figure in the back.Therefore the purpose of Fig. 2 is the overall structure of indication plug unit guide and the plug-in unit guide is installed in method on the mounting guide rail.This most preferred embodiment of the present invention, single plug-in unit guide is narrower than plug-in unit itself substantially on the mounting guide rail depth direction, therefore, on ground of mounting guide rail depth direction two plug-in unit guides (end face at mounting guide rail is also like this) are installed, thereby between guide, just have living space.Compare with the plug-in unit guide of a broad, the tools cost of this guide reduces (because the molding costs of smallclothes is less relatively).And narrow plug-in unit guide can be used for a plurality of different bound cells, moves the plug-in unit guide of back according to the length of plug-in unit, thereby plug-in unit can be installed near the back terminal box on depth direction.(the plug-in unit guide is very important near terminal box place, back support insert this point, and plug-in unit just can as far as possible accurately combine with terminal box like this, so also can reduce twisting stress.) during thermal expansion problem on considering depth direction, also be the best substitute of broad plug-in unit guide on depth direction at plug-in unit guide narrower on the depth direction.

In the present embodiment, each mounting guide rail of plug-in unit guide forms 17 parallel card slots altogether.In the case, the mounting guide rail horizontal panel that the plug-in unit guide is installed is made (only showing some holes wherein among the figure) by perforated plate 21,22.The ventilation of mounting guide rail has been improved in these holes, and some of them also are with the installing hole of plug-in unit guide positions on mounting guide rail.Therefore, with regard to thermal expansion, these installing holes are also as the fixing point of plug-in unit guide.

Fig. 3 is the stereogram of single plug-in unit guide A or B.On the Width of mounting guide rail, the plug-in unit guide is an integral piece, make by plastic material, a plurality of card slots are arranged on Width, it by first, second sidewall 31 and 32 and coupling part 33 form, sidewall is parallel to each other basically and at the depth direction each interval certain distance of mounting guide rail, coupling part 33 links together sidewall and be narrower at the Width of mounting guide rail.Sidewall and coupling part form ladder shape structure, and wherein sidewall forms the column of ladder, and the coupling part forms step.Formed a space C in the middle of adjacent two coupling parts and the sidewall, it is corresponding to the distance between the ladder step.

The surface, single coupling part of facing mounting guide rail inside has groove 34, and the plug-in unit limit places in it.Groove is by part 34a and have outwards gradually wide opening portion 34b and form, and part 34a is roughly even on width, and substantial horizontal, outwards gradually wide opening portion 34b downward-sloping slightly (for example referring to Fig. 6).These opening portions make that plug-in unit is easier and slip in the groove.

The plug-in unit guide is installed on the mounting guide rail (for example, see Fig. 5) by vertical pin 35, and vertically sell 35 and on the bottom surface of some coupling parts, form, but not all having.In principle, vertically pin also can be installed in other positions on the guide bottom surface, but it preferably forms fixing point (on Width) at the card address place.There is the coupling part of vertical pin to comprise two vertically pins, is positioned at the two ends of the constant width part 34a of groove.

Because the coefficient of thermal expansion of mounting guide rail and guide is different, sidewall has formed bend M between the coupling part, and sidewall departs from its basal plane at this some place.Bend roughly take the shape of the letter U (from above) in this embodiment.The basal plane that forms from sidewall inwardly puts in.Bend is high-visible in Fig. 4, and it has also illustrated the plug-in unit guide seen from top to bottom.Therefore sidewall is not straight between two coupling parts but curves an extra bend, like this between these 2 the length of sidewall just greater than the beeline of this point-to-point transmission.Therefore it is curved etc. that these bends just form thermal expansion between corresponding points, when temperature raises, just makes the contraction of plug-in unit guide.Because the thermal coefficient of expansion of plug-in unit guide plastic material is than mounting guide rail metal height, the expansion ratio mounting guide rail of guide between anchor point is big, and this just means that the plug-in unit guide can shrink in the thermal expansion crook.This like this structure just can adapt to the different heat expansion coefficient of mounting guide rail and guide.

Fig. 7 is that vertically pin 35 places show being connected between plug-in unit guide and the mounting guide rail along the cutaway views of Fig. 4 line B-B direction.At the end of vertically selling is a groove 36, and its makes that vertically top of pin can deflection.Openend at the top is made taper shape, and just the diameter than vertical bearing pin is big for the maximum gauge of circular cone like this, wherein vertically sells the diameter that diameter is substantially equal to hole on the plate 21,22.Vertical pin is pushed in the hole of plate 21 or 22, conical part deflection, locking positioning, the substantially horizontal collar flange face of conical portion leans against on the panel surface with the guide opposite side like this.Like this, guide is located on mounting guide rail.As previously mentioned, anchor point is preferably on the coupling part, and guide is at fixing on the mounting guide rail or set-point just (promptly at the card address place) on the described position at targeting part like this.

The bottom surface of coupling part (also promptly with groove 34 facing surfaces) than sidewall surfaces (referring to Fig. 5) height that is positioned on plate 21 or 22, has just formed an air gap like this between each coupling part and plate, represent with label AS in Fig. 5.The ventilation of mounting guide rail has been improved in these air gaps, (also having reduced thermal expansion).

Plug-in unit on the mounting guide rail can also have expansion plugin, is installed on the actual communication apparatus by their main plug-in unit.For reaching this purpose, be shaped on hole 38 at the top of sweep, the expansion plugin that links to each other on any and actual plug-in unit can be installed in these holes, forms its expansion slot.Sweep can be used for increasing the capacity of mounting guide rail like this.

Though the front describes the present invention with reference to embodiment with reference to the accompanying drawings, be appreciated that the present invention is not limited thereto, can also in above-mentioned explanation and the described invention aim of aftermentioned claims scope, change.For example the width of plug-in unit guide can change 2-17 card slots in actual applications.

Claims (6)

1. A plug-in guide for mounting rails of electronic equipment, comprising: A one-piece piece (A, B) made of plastic material comprising first and second side walls (31, 32) substantially parallel in the width direction of the card guide and spaced apart from each other in the depth direction of the card guide, and A plurality of connection parts (33) narrower in the width direction of the card guide, which connect the side walls and are spaced apart from each other in the width direction of the card guide, so that two continuous connection parts and the part between the side walls Just between them a space (C) is formed, with slots (34) between the individual connecting parts, serving as rail-like guide parts, The guide part thus forms a plug slot (BS) with the other guide part constituting a pair of assemblies, into which the electronic plug (BU) of the device is inserted and detachable, It is characterized in that, The side walls (31, 32) of the one-piece form between the connecting parts a bend (M) at which the side walls deviate from their base plane. 2. An insert guide as claimed in claim 1, characterized in that the dimension of the one piece in the depth direction is at most half the width of the insert in this direction. 3. Card guide according to claim 1, characterized in that said one-piece piece comprises a vertical pin (35) for locking it on the mounting rail. 4. A card guide according to claim 3, characterized in that a vertical pin (35) is located at said connecting portion in the width direction of the guide. 5. The plug-in guide according to claim 1, characterized in that the surface of the connecting portion (33) facing the direction opposite to the groove (34) is at a different height from the surface of the side wall pressed on the mounting rail, so when the integrated When the component is installed on the mounting rail, an air gap (AS) is left between the mounting rail and the connecting part. 6. The plug-in guide according to claim 1, characterized in that the curved portion (M) also has a hole (38) for installing the expansion plug-in connected with the electronic plug-in on the installation rail.

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