JPH05267866A - Stretching member of circuit board container equipment - Google Patents

Abstract

PURPOSE: To enable a member to be suitable for accommodating several circuit boards, stretch intersecting the front of a rack accommodated in a container equipment, and be detached from an extrusion molding material. CONSTITUTION: A plurality of guides 10 are arranged at constant intervals along the total length of a part member, so as to receive positioning pins protruding from the rear of a circuit board front plate, when the circuit board is accommodated in a rack. A stretching part member 7 has a nearly T-shaped cross section. Both of the facing ends of a heat part of the T-shaped stretching member are detachably fitted to a facing thin trenches, formed in an extrusion molding material. The guides 10 which are arranged at constant intervals are arranged at least on a leg part of the T-shaped stretching member. Each of the guides has a depth capable of accommodating a positioning pin, irrespective of its length, within the limiting range of the length of the positioning pin.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a storage device such as a cabinet or a case provided with a support such as a rack or a tray, in which the support such as the rack or the tray is provided with an electric device, an electronic device, or both. The present invention relates to a device for mounting. The present invention is particularly directed to a storage device for storing a circuit board in a rack within the storage device, wherein generally two sets of facing guide rails are spaced apart from each other. Several sets of side-by-side and one or more edge connectors are attached to the circuit board at or near the rear edge thereof, the edge connectors being directly or indirectly attached to the backplane at the rear of the enclosure. To the rails of each set from the front of the above rack so that the circuit board slides in far enough until it is electrically connected to one or more connectors installed in It concerns a device of the type which can be slid in.

[0002]

2. Description of the Related Art Conventionally, a generally rectangular shape used as a handle is used to facilitate insertion and removal of a circuit board from a pair of opposed guide rails of a rack. A method of fixing a front edge of a circuit board, that is, a trailing edge when the circuit board is slid into a rail to a flat plate (hereinafter referred to as a front plate) is used. When the circuit boards are completely inserted into all the guide rails forming a pair of racks, the adjacent circuit board front plates are arranged so that these circuit board front plates are generally flat on the front surface of the enclosure. The adjacent edges of the plate should be close to each other.

Further, when the circuit board is completely inserted into the corresponding pair of guide rails, the board is detachably fixed at a predetermined position, which is a conventional general method. Usually done with fixing screws, which pass through the fixing screws at opposite ends of the front plate of the base plate and which extend across the front of the enclosure adjacent the front end of the guide rails. By screwing and fixing this screw into the screw hole of two facing stretching members facing each other. Typically, each elongate member is a metal or alloy extruded material, and for ease of manufacturing and reduced manufacturing cost, the screw holes for receiving the circuit board front plate retention screws are metal or alloy strips. The plates are punched at regular intervals, and the strips described above are made separately for each extruded product and are detachably fitted into a pair of opposed narrow grooves of the extruded product. Has been.

If, as is customary, each circuit board front plate is a metal or alloy, in some circumstances, after each board is fully inserted, each adjacent circuit board front plate will be electrically connected to each other. Need to be connected to the front plate of each substrate, and as a result, it is necessary to make sure that the front plate of each substrate is effectively grounded. For this reason, if one of the adjacent circuit boards is already housed in the enclosure and the other is completely fitted into the corresponding guide rail,
To make an electrical connection with the front plate of the adjacent circuit board,
It has been proposed to install at least one elastic electrical contact beside the long edge of each circuit board. Such a structure sufficiently guarantees the electrical connection between the adjacent circuit board front plates, but when the other of the adjacent circuit boards described above is inserted far enough, the elastic contact causes the rear edge of the circuit board to move. The more difficult it is to make an electrical connection between the edge connector and the connector of the backplane, the more the substrate tends to be subjected to a force acting at right angles to its insertion direction.

To prevent lateral movement of the board, or at least to limit its extent, caused by the elastic contacts described above, the rear surface of each circuit board front plate is proximate to each terminal and projects from this rear surface. , At least 1
Although it has been proposed to attach a generally rigid pin of the book (hereinafter referred to as a locating pin), this pin keeps the front plate in place with respect to the extension member when the circuit board is fully inserted. To fit, it is plugged into a corresponding hole in one of the two opposing elongate members extending across the front of the enclosure. In the first such structure proposed, each circuit board front plate has two laterally spaced locating pins protruding from this rear surface, near each terminal on its rear surface. A number of individually formed strips that are removably fitted to corresponding extrusions that extend across the front plate of the enclosure. Along the screw holes, these screw holes are drilled at regular intervals from each other,
It is inserted into the corresponding hole. Prevent the undesired movement of the circuit board above before the connector on the trailing edge of the board is first plugged into the connector on the backplane, or
Alternatively, or to limit, the length of the locating pin is preferably determined by considering the distance between the front face of the extruded material that the front plate contacts and the corresponding hole in the strip. In a second proposed construction of this kind, a second strip formed separately for the extruded material extending across the front of the enclosure comprises a circuit board front plate. A second strip of extruded material which is removably fitted into a pair of opposed narrow grooves of the extruded material at an intermediate position between the front face of the extruded material and the strip having the screw holes. Has a plurality of holes for receiving positioning pins protruding from the rear surface of the circuit board front plate, which are formed at regular intervals with respect to each other over the entire length of the strip. Due to the position of the second strip, the length of the locating pins of the circuit board front plate in this second structure is considerably shorter than that of the circuit board of the first structure.
While each of these structures is entirely satisfactory in its own right, it is not fully satisfactory when any one of the front plates is used with the extrusions or strips of locator pins of other structures. There is a drawback.
From the point of view of the user of the enclosure, this is a very unsatisfactory situation because the enclosure cannot use a circuit board with a front plate, obtained from more than one source.

[0006]

SUMMARY OF THE INVENTION It is an object of the present invention to provide a removable extrudate which extends across the front of a rack adapted to accommodate several circuit boards. , For fitting the circuit board, when the circuit board is housed in the rack, the positioning pins protruding from the rear surface of the circuit board front plate are received at regular intervals from each other over the entire length of the following members. To provide an improved elongate member having several guides arranged.

[0007]

SUMMARY OF THE INVENTION The improved stretch member of the present invention has a generally T-shaped cross section, with opposite ends of the head of the T-shaped stretch member being engraved on the extruded material. The guides, which are removably fitted in the facing narrow grooves and are spaced apart from one another, are placed at least on the legs of the T-shaped extension member,
Each guide has a depth such that a locating pin of any length can be accommodated within the limited range of the locating pin length.

The improved elongate member having a generally T-shaped cross section can also be an extruded metal or alloy or plastic material, in which case each guide is a leg of the T-shaped elongate member. A hole extending over the entire length of the section and the entire thickness of the T-shaped extension member head, or
The leg of the T-shaped elongate member is provided with a number of projections which are spaced apart from one another over the entire length of the elongate member, and a part of each guide has two adjacent projections. There is a gap between them and another part of each guide has a hole that extends through the entire thickness of the head of the T-shaped elongate member.

However, for ease of manufacture and reduction of manufacturing costs, it is desirable to make the improved stretch member from a substantially flat metal or alloy strip, in which case the strip extends over its entire length. It has a row of holes spaced from one another and the member is bent so as to have a substantially T-shaped cross section, and
The holes are spaced at regular intervals from each other over the entire length of the leg end surface of the V-shaped extension member, and the holes and a part of the strip define opposite side walls of the projection, between which The guides are arranged at regular intervals. Each hole in the strip has an elongated shape, and at least a portion thereof extends across the strip portion defining one or both of the opposing sidewalls of the T-shaped extension member legs.

If desired, the substantially flat strip, on which the modified elongate member having a T-shaped cross section is formed, is laterally spaced from the above-mentioned holes which are regularly spaced from one another. A second series of holes may be provided in place at regular intervals along the length of the strip,
In this case, the above-mentioned second series of regularly spaced holes are arranged in the strip portion which delimits the side wall of the T-shaped elongate member head, and at said side wall also at regular intervals from one another. The strip is bent so that the holes that are drilled are approximately axially aligned with the holes that are spaced apart from each other on the end faces of the legs of the T-shaped stretching member. There is.

In all cases, the elongate members are also spaced from one another over their entire length and during the locating pin guides for receiving fixing screws which temporarily fix the circuit board front plate to the rack. There may be several holes arranged. If the modified stretch member is an extruded material, the hole for the fixing screw is a screw hole, and if the modified stretch member is made by bending a metal strip, the hole for the fixing screw is a screw hole. Alternatively, it can be a planing hole for which a locking tapping screw can be used.

The invention also includes a rack for accommodating a number of circuit boards and for accommodating in an enclosure, the racks being a set of racks spaced from one another. Of the guide rails facing each other and an extruded material in which the extending member is detachably housed so that the circuit board is fitted into the guide rails of the rack facing each other. At this time, there are several guides arranged at regular intervals along the entire length of the extruded material for receiving the positioning pins protruding from the rear surface of the circuit board front plate, and each extending member is It has a substantially T-shaped cross section, and the opposite ends of the head of the T-shaped extending member are removably fitted into a plurality of narrow grooves arranged facing the extruded material. And at least some of the above-mentioned regularly spaced guides are located at least on the T-shaped extension member legs, the depth of each guide being equal to the length of the locating pin. It is characterized in that it can accept a pin having any length within the limit range of.

[0013]

EXAMPLE Three examples of stretch members removably fitted into an extruded material that extends across the front of a rack that is made to house several circuit boards, The invention is explained in more detail below, by way of illustration and with reference to the accompanying drawings, in which:

Referring to FIGS. 1 and 2, a first embodiment of a stretch member is spaced from one another over the entire length of the stretch member and defines a gap 23 between adjacent protrusions. It is an extruded material having a T-shaped cross section in which several projections 21 are formed on the legs of the T-shaped stretched member. The head of the T-shaped elongate member 7 comprises several holes 2 which are spaced apart from one another over the entire length of the member.
2 and each hole includes a gap 2 between two adjacent protrusions 21.
3 is axially aligned with 3. The axially centered gap 23 and the projection 21 form a guide for receiving a positioning pin projecting from the rear surface of the circuit board front plate. Since each hole 22 is threaded, it can also be used as part of a guide 10 for receiving a locating pin, or the circuit board front plate is fixed to the T-shaped extension member 7 by a fixing screw. When used, it can also be used to receive a fixing screw.

A second embodiment of the elongate member shown in FIG. 3 is a metal or alloy extruded material 47, which has a T-shaped cross section and extends over the entire length of the member. Several holes 4 arranged at regular intervals from each other
8 and each of these holes extends over the entire length of the legs and the entire thickness of the head of the T-shaped elongate member. The holes 48 constitute guides 10 for receiving locating pins protruding from the rear surface of the circuit board front plate.

Third of the stretch members shown by FIG.
Embodiment is formed of a flat strip 57 of metal or alloy, which strip has a row of holes 58 spaced apart from one another over its entire length. Strip 5
The strip 5 is provided so that the elongate member formed from 7 has a T-shaped cross section and comprises several holes 58 which are regularly spaced from one another over the entire length of the leg of the T-shaped elongate member.
7 can be bent. The strip portion 59 and the hole 58 formed between the strip portion 59 and the hole 58 described below, which define the opposite side walls of the protrusion 60, receive a positioning pin projecting from the rear surface of the circuit board front plate, The guides 10 are arranged at regular intervals from each other.

The guides 10 of the respective extension members shown in FIGS. 1 and 2 and FIGS. 3 and 4 have such a depth that they can accept pins having any length within the limited range of the length of the positioning pins. ..

With reference to FIGS. 5 to 7, the rack 1 is provided with several sets of opposed horizontal guide rails 2 which are spaced apart from one another, the set of guide rails. Then, the upper edge and the lower edge of the circuit board 11 which face each other are slid from the front surface of the rack. The rear of the enclosure in which the rack is housed has several connectors (not shown) that attach directly or indirectly to the backplane, each with several sockets on its front face. ing. An alloy extrudate 5 having a pair of opposed narrow grooves 6 (see FIGS. 8 to 10) along its entire length traverses the front of the rack 1 along each of the upper and lower edges of the rack 1. 1 and 2, a stretched metal member 7 is removably fitted in the narrow groove 6 as shown in FIGS. The extruded material 5 has a flange 8 over its entire length, which extends forward from the front of the rack 1 and within which a groove 9 extends over the entire length of the flange. ing.

The circuit board 11 housed in the rack 1 is provided with an edge connector 12 at or near the rear edge thereof. From this edge connector,
At the rear of the enclosure described above, some pins project to make pin-socket connections with some sockets of the connector. The square front plate 14, which is a synthetic material in which the surfaces of two panels are bonded together, is used for the bracket 1
3 is fixed to the front edge of the circuit board 11, the rear or inner panel 15 is made of a conductive metal or alloy, and the front or outer panel 16 is an electrically non-conductive material. The inner panel 15 of the composite front plate 14 comprises a flange 17 extending along most of the length of each side edge thereof, which flange 17 is integral with said panel and extends rearward from said panel. It is extended. The elastic electrical contact 18 is
The contact 17 is electrically connected to the outer surface of the flange 17, and one of the adjacent circuit boards has already been connected to the rack 1.
When fitted in and the other adjacent circuit board slides deeply into the corresponding pair of guide rails 2, the electrical contact is inside the composite front plate 14 of the circuit board 11 which makes the phosphorus contact. It is electrically connected to the flange of the panel 15. In order to prevent some of the pin-socket connections made at the rear of the enclosure in which the rack is housed from being made difficult, the pre-compositioning prevents the elastic contacts 18 from moving the circuit board 11 laterally with respect to the sliding direction. The part plate 14 is provided with several laterally spaced rigid pins 19 projecting rearward from each of its upper and lower ends, which rigid pins 19 are designed to When the substrate 11 is slid sufficiently deep into the corresponding pair of opposed guide rails 2, the composite front plate is inserted into the guide 10 of the elongated metal member 7 such that it is in position with respect to the extruded material 5.

As shown in FIGS. 8 to 10, it is desirable to install a circuit board loading / unloading device 31 at or near the end of the synthesis front plate 14.
In this case, the loading / unloading device 31 includes a main body 32 fixed to the combining front plate 14 and a lever 33 attached to the main body so as to rotate about a horizontal rotation shaft 34.
And are equipped with. This lever 33 has a tongue 35, which is the lever that the synthetic front plate 1
4, when it is rotated in the direction towards the front side, it projects beyond the body 32, so that the round end surface 36 of the tongue 35 is
It can be fitted on the inclined side surface 37 of the groove 9 in the flange 8 of the corresponding extruded material 5, which inclined side surface constitutes the "push-in" surface of the extruded material. The lever 33 also has a fixing screw 38, and this fixing screw is a screw hole 3 of the lever.
Since it is screwed tightly into 9, the fixing screw does not come off easily here, and the fixing screw is adapted to be screwed into the screw hole 40 of the body 32. The finger 41 having the round end 42 projects from the outer end of the lever 33, and the round end 42 is
As the lever rotates away from the front surface of the composite front plate 14, the front end surface 4 of the associated extrudate 5
3, the front end surface of which constitutes the "extruded" side of the extruded material. A leaf spring 44 attached to the device serves to move the lever 33, which is attached for rotation, in a direction away from the front surface of the composite front plate 14.

With particular reference to FIGS. 8 to 10, when the circuit board 11 is housed in the rack 1 housed in the storage device, the leading edges of the upper and lower edges of the circuit board 11 are paired. Of the guide rails 2 facing each other, and further the circuit board is placed between the guide rails until the positioning pins 19 projecting rearward from the composite front plate 14 are first inserted into the guides 10 of the T-shaped extension member 7. Can be pushed in by sliding. The lever 33 at the end of the composite front plate 14 is then rotated in the direction of the front of the composite front plate against the action of the leaf spring 44, resulting in the body 35.
The rounded surface 36 of the tongue 35 projecting beyond is pressed against the "close-in" surface constituted by the inclined side surface 37 of the extruded material 5 and, in cooperation with this surface, of the circuit board 11. Edge connector 12 at the rear and rack 1
Helps provide the force necessary to make a multiple pin socket connection with the connector at the rear of the housing in which it is housed. When the circuit board 11 is completely fitted and a plurality of pin-socket connections are made, the round surface 36 of the tongue 35 pressed against the light bevel 37 of the groove 9 is
Preventing the circuit board 11 from coming off the storage device. The fixing screw 38 then prevents the rotation of the lever 33 and thus the body 32.
It is screwed into the screw hole 40.

When the circuit board 11 is removed from the rack 1, the fixing screw 38 is pulled out from the screw hole 40 of the main body 32, and the lever 33 is rotated in the direction away from the front surface of the composite front plate 14, The rounded ends 42 of the resulting fingers 41 are pressed against the "extrusion" surface formed by the front end surface 43 of the flange 8 of the extruded material 5 and, in cooperation with this surface, a plurality at the rear of the circuit board 11. Circuit board can be easily slid out of the rack 1 as it helps provide the force necessary to disconnect the pin-socket connection of the tongue and the tongue 35 is no longer fitted in the groove 9. it can.

[Brief description of drawings]

FIG. 1 is a partial plan view of an embodiment of an extension member of a circuit board storage device of the present invention.

FIG. 2 is a side view of FIG.

FIG. 3 is a partial perspective view of the second embodiment.

FIG. 4 is a partial perspective view of a third embodiment.

FIG. 5 is a perspective view of a rack for accommodating a circuit board and accommodating it in a storage device.

FIG. 6 is a perspective view of a circuit board housed in the rack of FIG.

FIG. 7 is a partial plan view of the circuit board of FIG.

FIG. 8 illustrates the use of a device that provides the force necessary to make multiple pin and socket connections at the rear of a circuit board.

FIG. 9 is a diagram showing a device locking method for preventing the circuit board from coming off.

FIG. 10 illustrates the use of a device that provides the force necessary to break a plurality of pin and socket connections at the rear of a circuit board.

[Explanation of symbols]

 1 Rack 2 Guide Rail 5 Extruded Material 6 Fine Groove 7 Stretching Member 8, 17 Flange 9 Groove 10 Guide 11 Circuit Board 12 Edge Connector 13 Bracket 14 Front Plate 15 Inner Panel 16 Outer Panel 18 Elastic Electrical Contact 19 Rigid Pin (Positioning) Pin) 21,60 Protrusion 22,48,58 Hole 23 Gap 31 Entry / exit device 32 Main body 33 Lever 34 Rotating shaft 35 Tongue-shaped portion 36 Round end face 37 Sloping side surface 38 Fixing screw 39,40 Screw hole 41 Finger 42 Round end 43 Front end Surface 44 Leaf spring 47 Stretching member (extrusion molding material) 57 Stretching member (strip plate) 59 Strip plate portion

Claims (9)

[Claims] 1. An extension member removably housed in an extruded material extending across the front of a rack adapted to house a number of circuit boards.
An extension having a number of guides spaced along the length of the member to receive locating pins protruding from the rear surface of the circuit board front plate when the circuit board is stored in the rack. In the member, the stretching member (7, 47, 57) has a substantially T-shaped cross section, and the opposite ends of the head of the T-shaped stretching member are carved in the extruded material. Being removably fitted into the narrow grooves facing each other,
Further, the guides (10) arranged at regular intervals are placed at least on the legs of the T-shaped extending member, and each guide has any length within the limit of the length of the positioning pin. An extension member for a circuit board storage device, characterized in that it has a depth such that a locating pin can be accommodated therein. 2. The elongate member (47) is an extruded material made of a metal or alloy or a plastic material, and each guide (10) includes the entire length of the leg of the T-shaped elongate member and the T-shaped member.
The extension member of the circuit board enclosure of claim 1, wherein the extension member is a hole extending through the entire thickness of the head portion of the V-shaped extension member. 3. Stretching member (7) is an extruded material of metal or alloy or plastic material, and said T
The leg portion of the V-shaped elongate member is provided with several projections (21) which are arranged at regular intervals from each other over the entire length of the elongate member, a part of each guide (10) being There is a gap (23) between two adjacent protrusions, and another part of each guide (10) has a hole (22) extending through the entire thickness of the head of the T-shaped extension member. Item 1. An extension member for a circuit board storage device according to item 1. 4. The circuit of claim 2 or 3 wherein each of said holes in the extension member is threaded so as to be suitable for receiving a set screw for temporarily fixing the circuit board front plate to the rack. Stretching member for substrate storage device. 5. The elongate member (57) comprises a substantially flat metal or alloy strip, the strip having a row of holes (58) spaced at regular intervals from one another along its length. ) And the member is bent to have a substantially T-shaped cross section, and the holes are spaced at regular intervals from each other over the entire length of the leg end surface of the T-shaped stretching member. It is placed aside, and in addition the holes and part of the strip (5
9. An extension member for a circuit board storage device according to claim 1, wherein 9) defines opposite side walls of the projection (60), between which the guides (10) are arranged at regular intervals. .. 6. Each hole (58) in the strip (57) is elongate and at least a portion thereof defines one or both of opposite side walls of the T-shaped extension member legs. An extension member for a circuit board enclosure according to claim 5 extending over a strip portion that is defined. 7. A substantially flat strip, on which a T-shaped stretch member is formed, is laterally spaced from the above-mentioned holes that are regularly spaced from each other. A second series of holes spaced from each other along the length of the strip are provided, the second series of holes spaced apart from each other defining a sidewall of the T-shaped elongate member head. The holes that are arranged in the strip portion and that are formed at regular intervals in the side wall are the holes that are spaced at regular intervals in the end surface of the leg of the T-shaped stretching member. 7. The extension member for a circuit board storage device according to claim 5, wherein the strip is bent so as to be aligned substantially in the axial direction. 8. The elongate member also receives a set screw for temporarily fixing the circuit board front plate to the rack over its entire length and between the above-mentioned regularly spaced guides. 8. A circuit board enclosure extension according to any one of claims 1 to 3 and 5 to 7, characterized in that it has several holes spaced apart from one another. Element. 9. The extension member of the circuit board storage device according to claim 8, wherein the hole for receiving the fixing screw is a screw hole.