JPS59106199A - Card frame - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] The present invention relates to a card frame, and particularly to a cart 9 guide thereof.

A "card frame" (also known as a "11 yellow") is a type of house electrical circuit used on a "card" that includes a circuit board, such as a printed circuit board, on which circuit components are mounted. It is a frame structure. A typical card frame includes a pair of side plates spaced apart by generally horizontally extending lateral rails. Card guides are provided on at least some of the lateral rails for receiving cards, each card guide generally extending between the front and rear rails and when the cart 9 is slid into the card frame. It includes an elongate member having a groove for receiving a portion of the card, such as the edge of a circuit board. Obviously, once installed in position on the upper and lower sets of the front and rear transverse rails, the associated upper and lower card guide sets can only accept cards of a predetermined height. Therefore, only the cart 9 with that specific height is connected to the two sets of horizontal
- It is received between the two channels. This means that if these two
It is acceptable if all the cards fitted between the transverse rails of a set have the same height, for example if they are standard height "Eurokart 9" cards.

However, from time to time there is a desire to use cards of other heights in conjunction with or instead of standard height cards, such as the Eurocard. This is because manufacturers of card frames and their components strive to provide a more or less standard range of products that are supplied to manufacturers in the electronic field in which they install their cards. raise the issue of Therefore, if a particular card slot is designed to accept Eurocards etc.
If a particular user desires to use a car 1 of a different depth in place of or in conjunction with a five-row card, often technically unsatisfactory compromises are made. For example, if cards of different heights are used, this can be accommodated by moving the associated upper and lower lateral rails.

This generally requires additional complexity such as additional fixing holes and positioning on the side plates to provide the device. If cards of different heights are used together between the same horizontal rail strings, these horizontal rails
Cart 9 guides for other types of carts must be spaced apart from the transverse rails by special spacing devices.

According to the present invention, there is provided a card frame including a front lateral rail, a rear lateral rail, and a card guide that is engageable with the front and rear lateral rails, wherein the card guide is connected to the front and rear lateral rails, respectively. a pair of end elements engageable with each of the associated lateral rails, each said element being engageable with the associated lateral rail at a relatively high position and a relatively low position, said position being lateral to the associated lateral rail. spaced apart from each other, and the card guide further includes a shank formed separably from and engaged with the end element, such that when the card guide is assembled, the end element is connected to the transverse rail and the shank is Depending on whether it is the first length or the second length, they are engaged in their high position or low position.

Nine such cart frames can accommodate cards of different heights between a common fixed transverse rail string simply by attaching each card guide with a stem of one or the other length of two predetermined lengths. can be easily accommodated, the length being determined by the particular card that is fitted into the position associated with each card guide. There is therefore no need to provide a device for fitting the lateral rails in different positions to accommodate cards of different heights. Furthermore, there is no need to provide spacing devices separating the cart 9 guides from the tub rails. What is needed is to have a common type of card guide end element and to have two different lengths of available shank.

In preferred embodiments of the invention described below, each end element includes at least one engagement device in a first position and at least one similar engagement device in a second position horizontally and vertically spaced apart from the first position. It has an engagement device. The lateral rail is complementary to the engagement device of the end element and is in the first position or the second position.
and an engagement device securable with the engagement device of the end element at the location.

Preferably, the engagement device of the card guide comprises a hole (eg a blind hole or quad) and the complementary engagement device of the lateral rail comprises a stud, eg formed as a semi-sheared piece, in the lateral rail.

The present invention will now be described in detail with reference to the drawings, with reference to embodiment 11, which is not intended to limit the invention.

The illustrated car 1-'' frame guide includes a pair of side plates, one of which is indicated at 10 in FIGS. The lower front lateral rail 12 and the lower rear lateral rail 14 are shown in the figure. (In fact, it is sufficient to position the card frame closer to the front of the card frame than the rail 14 to the rail 12.)
. Cart 9 guide 1G is mounted between lateral rails 12 and 14 in a manner described in detail below. -L forward and rear side rails (not shown) are mounted between the side plates to receive further card guides, these car guides generally receiving circuit cards in a manner well known in the art. The receiver is assembled with upper and lower lateral rails in vertically spaced pairs for receiving purposes. The upper transverse rails and card guides are essentially the same as those of the lower part, the difference being with respect to their orientation, so that only those of the lower part will be described. (The upper and lower horizontal rails do not necessarily need to be placed at the top and bottom of the card frame; rather, it is sufficient to place the upper rail closer to the top of the card frame than the lower rail.) In this embodiment, it is an aluminum extrusion having a series of studs 9 or protrusions 20 formed at an even pitch along the protrusions 22 thereof.

The studs 20 are constructed as sheared sections of the material of the projections 22. The studs 20 are generally cylindrical and form a slight taper at their free ends as best seen in FIGS. 1 and 2. do.

The lower edge of the free end of each projection 22 has a continuous lip 24.

Above the protrusion 22 a continuous four-part or groove 26 is formed in each transverse rail 12.14.

Each card guide 16 has tip or terminal elements 28a at both ends.
, 28b and the shaft portion 30. Tips 28a and 2
Preferably, 8b and shank 30 are all made of plastic material, with the tip being cast and the shank extruded.

Tips 28a and 28b are conveniently "hand-built" so that, as can be seen, they have slightly different profiles. However, they have the same structure in principle. Therefore, only the tip portion 28a will be described in detail.

The tip portion 28a includes an outer portion 32 with a relatively low height and an inner portion 34 with a relatively large height. A pair of blind holes or quads 36 are formed in the underside of the outer portion 32, the spacing of the holes being equal to the spacing between the studs 20 of the lateral rail, and the size of the holes being substantially the size of the Stanno F"20. Similar pairs of holes 38 are provided in the inner portion 3.
It is formed on the lower surface of 4. A slot 40 is formed in the inner portion 34 to form a flexible finger 42 with ridges 44.

The shaft portion 30 of each card guide 16 is formed with an hourglass-shaped continuous hole 50 (FIG. 5) along its length.

Each tip 28a, 28b has a correspondingly shaped tongue 52 projecting from its free end. Each card guide 1
6, the tongue-like portions 52 of the tips 28a and 28b are connected to the tongue-like portions 52.
slides into the end opposite the hole 500 of the shaft portion 30 until the surface of the distal end portion thereof extends comes into contact with the surface of the shaft portion 30.

As can be seen from the above description, each tip 28a.

28b can be engaged with its corresponding transverse rail 12.14 at various positions by engaging the holes 36 or 38 with any associated adjacent stud pair 20, thereby clearing the transverse rail. More importantly, for any position along the lateral rail, each tip can engage the lateral rail in one of two positions, and such two positions are relative to each other vertically and laterally of the lateral rail. separated from each other in both directions. The first such position is shown in FIG.
Shown for both a and 28b. In this position, the two studs e20 of the lateral rail engage the holes 38 in the tip. The tip part has a deformation of the finger part 42 and a groove 2.
6 is securely in place as a result of the snap fit of the ridge 44 into the ridge 44.

In the second position, shown in FIG. provided by. In the first position shown in FIG.
or other standard height cards). That is, this card is slid into the card guide 16 and the tip 28a
.

28b and is guided therealong by a continuous groove 60 formed along the length of the shank 30. In the second position shown in FIG. 2, the cart 8 guide 16 receives a large card of a predetermined height.

Obviously, the spacing between the tips 28a and 28b is
The case shown is smaller than the case of FIG. 1, the difference being equal to twice the spacing between the two tip holes 36,38. axis 30
Two alternative lengths of can be used by fitting the card guide 16 into one or the other of the above positions. Thus, if the pair of standard tips 28a, 28b are mated with the longer shaft 30 having the length shown in FIG. It easily snaps into place in between to accept a Eurocard. If the cart 9 guide 16 is properly mated with the shorter shaft 30, the tips 28a, 28b will be shown in FIG.
In the lower position, as shown for tip 28a, the card guide will easily engage the lateral rail 12.14, thereby allowing the card guide to accept cards of greater depth.

[Brief explanation of drawings]

FIG. 1 is a partial sectional view through a card frame according to the present invention, showing a cart 9 guide fitted into a pair of horizontal rails at an upper position for receiving a Eurocart 9, and FIG. This figure corresponds to the part shown in Fig. 3, which shows a card that has been modified to have a shorter length instead of a shorter shaft and is mounted on the purchasing rail at a lower position to accept a card with a height larger than the Eurocard. 3 is a cross-sectional view through the tip or end element of the cart 8 guide taken along line flI-H of FIG. 2, and FIG. 4 is a cross-sectional view taken along line flI-H of FIG.
ff is a cross-sectional view of the tip or end element of the card guide, FIG. 5 is a cross-sectional view of the card guide shaft taken along line v-■ of FIG. 1, and FIG. This is a partial perspective view of the frame, showing only the tips of the two card guides fitted to the horizontal rails in the upper and lower positions, respectively. Fig. 7 shows a top view of the card guide, and Fig. 8 shows a bottom view of the card guide. . Symbols in the figure: 10...Side plate, 12...Front rail, 14...Back rail, 16...Cart 5 guide, 20...Stand etc., 22...Protrusion part, 24...・Lip-shaped part, 26... recessed part,
28a, 28b...Tip element, 30...Shaft part,
32...outer part, 34...inner part,
36...Blind hole, 38...Hole,
40...Slot hole, 42...Finger portion, 44...
- Ridge portion, 50: continuous hole, 52: tongue-shaped portion, 60: continuous groove. Agent: Patent attorney (8107) Kiyotaka Sasaki (and 3 others)

Claims (1)

[Scope of Claims] 1. A card frame including a front horizontal rail (12), a rear horizontal rail (14), and a card guide (16) that can be engaged with the front and rear horizontal rails (12, 14), The card guide (16) includes a pair of end elements (28a, 28b) each engageable with a respective one of said forward or aft lateral rails (12, 14), each end element (2sa, 2
sb) at a relatively high position (Fig. 1) and a relatively low position (Fig. 2).
and said repositioning is engageable with an associated lateral rail (12,
14) and the cart 5 guide (
16) further includes a shank (30) formed separately from and assembled with the end elements (28a, 28b), so that when the card guide (16) is assembled, the end elements (28a, 28b) However, the shaft part (30)
The transverse rails (1
2, 14) A card frame characterized by engaging with. 2. Each end element (28a, 28b) has at least one engagement device in a first position and at least one other similar engagement in a second position spaced both vertically and horizontally from said position; equipment, and each horizontal rail (
12, 14) having an engagement device complementary to and engaged with the engagement device of the end element in either the first position or the second position. Card frame as described. 3. End elements (28a, 28b) and horizontal rails (12, 1
4. A card frame according to claim 2, wherein the engagement device of 4) comprises an interengaging hole (36, 38) and a stud (2).
28a, 28b) in at least one hole (3
6,38), and horizontally, /I/(12,14
4. A card frame according to claim 3, wherein the complementary engagement device of the lateral rails (12, 14) includes a stand (20) formed in the transverse rails (12, 14). 5. The stud (20) is formed as a single shear section 1
The card frame described in item 4 of 1 excommunication of 1'1-1 claim. 6. Each end element (28a, 28b) deforms to form a respective shaped portion (24, 26) when the element is engaged with a transverse rail (12, 14) in a relatively high position and a relatively low position. A card frame according to any one of the preceding claims, comprising an elastically deformable element (42) engaging with the upper and lower 9 positions, thereby ensuring the positioning of the end element in the respective high and low 9 positions. . 7. A card frame according to any one of the preceding claims, wherein the shaft (3) is assembled by mutual engagement of each end element (28a, 28b) and its complementary engagement device. 8. Shaft. (30) and the distal element (28, 28b) - a tongue (52) extending into a generally axial bore (50) of one of the shank parts of the other; including q
′! fnCard frame according to claim 7. 9. A hole (50) is provided in the shank (30) and extends the length of the shank so that each end of the shank has an associated two
Card frame according to claim 8, which is penetrated by tongues (52) of the two end elements (28a, 28b).