JP2006210443A - Mounting structure of printed circuit board - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a mounting structure of a printed circuit board that has a simple structure without using any separate components, dispenses with screws, can reduce costs, and can increase working efficiency. <P>SOLUTION: A pair of upper and lower guide rails 2 is terminated near the inner part of a chassis 1. A lower rail 3 and an upper rail 4 are provided alternately back and forth at the inner part from the termination. The lower rail is provided obliquely upward, the upper rail is provided obliquely downward, the exterior angle section at the leading side of the lower rail is bent and formed obliquely outward, and that of the upper rail is bent and formed obliquely outward. When the printed circuit board is inserted into the pair of upper and lower guide rails, the tip of the printed circuit board comes into contact with a bent section 5 at the inner side and the lower rail opens downward, the tip of the printed circuit board comes into contact with a bent section 6 in the upper rail, the upper rail opens upward, and the printed circuit board is fitted into the chassis, thus holding and fixing the printed circuit board by the upward returning force of the lower rail and the downward returning force of the upper rail. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a printed circuit board mounting structure in which a printed circuit board is inserted into a pair of upper and lower guide rails provided on both left and right wall portions inside the housing, and the printed circuit board is mounted in the housing. .

  In the conventional printed circuit board mounting structure, a printed circuit board is mounted on a flat plate-like portion protruding on both the left and right sides of the inside of the housing, and is attached to the flat plate portion using screws. For this reason, there is a problem that the cost is high and the work of attaching with screws is troublesome and the work efficiency is poor.

  The first prior art is shown in FIGS. As shown in FIGS. 9 and 10, the conventional card module guide rails are guide rails that are respectively attached to the upper and lower inner surfaces of the chassis 102 in order to insert the vertically standing card module 101 into the chassis 102. is there. This guide rail 111 has a concave section having a guide groove 112, and rises in an arc shape in the direction of shallowing the guide groove 112 at the front end of a thin plate protruding at the same level as the bottom surface of the guide groove at the end of the chassis front And a latch 119 having a protruding portion 118 formed thereon. A part of the opposite side walls 113 and 114 of the guide groove 112 is formed into a cantilever movable wall in the middle of the guide groove 112 by the vertical and horizontal slits, and the opposed movable walls 115 and 116 protrude inward of the guide groove 112. It has a holding part 117 which is curved in an arc shape and has a groove width fitted in a free state. (For example, refer to Patent Document 1).

  However, in this case, since the shape of the presser portion 117 is complicated, there is a problem that the cost is increased.

  The second prior art is shown in FIGS. 11, 12, 13 (a) and (b). As shown in FIGS. 11, 12, 13 (a) and 13 (b), this conventional board unit mounting apparatus includes rails 210 and 220 having concave grooves 211 through which side portions of the board unit 230 are inserted. Two are arranged so that the concave grooves 211 face each other. One rail 210 of the two rails 210 and 220 is provided with a protruding portion 240 that protrudes into the concave groove 211 and presses the side of the board unit 230. (For example, refer to Patent Document 2).

  However, in this case, the protruding portion 240 is provided on the metal spring seat plate 241. This metal spring seat plate 241 is a separate part, has a large number of parts, has a complicated structure, and increases costs. There was a problem of becoming.

  The third prior art is shown in FIGS. 14, 15 (a) and 15 (b). As shown in FIGS. 14, 15 (a) and 15 (b), this conventional electronic device substrate support mechanism has a connector 312 having a slide portion 319 for moving a substrate guide 317 paired with the substrate guide 311. A slide guide 316 for guiding the slide board guide 315 having the slide board guide 315 in the width direction is provided. The slide part 319 has a plate part 320 that slides on the T-shaped groove 322 of the slide guide part 316. On the opposing surfaces of the plate part 320 and the T-shaped groove 322, V-shaped concave and convex grooves 321 and 321 are respectively provided. 323 is formed. By being pushed, the slide substrate guide 315 slides and the printed circuit board 314 is sandwiched between the substrate guides 311 and 317. At this time, the V-shaped concave and convex grooves 321 and 317 are locked. (For example, refer to Patent Document 3).

However, in this case, since the V-shaped concave and convex grooves 321 and 317 must be provided in the connector 312 and the plate part 320, there is a problem that the shape becomes complicated and the manufacturing cost increases.
Japanese Utility Model Publication No. 3-92089 Japanese Utility Model Publication No. 3-17687 JP-A-11-307965

  The present invention has been made in view of the above-described conventional problems, and has a structure that is simple without using separate parts, that does not require the use of screws, can reduce costs, and can improve work efficiency. It aims at providing the attachment structure of a board | substrate.

  The present invention has been proposed in order to solve the above-mentioned problems, and the invention according to claim 1 is to insert a printed circuit board into a pair of upper and lower guide rails provided on both left and right wall portions inside the chassis. Then, in the printed circuit board mounting structure in which the printed circuit board is mounted in the chassis, the pair of upper and lower guide rails are terminated at a position near the back of the chassis, and the bottom is below this terminal. Rails and upper rails are provided alternately in the front and rear, the lower rail is provided obliquely upward, the upper rail is provided obliquely downward, and the outer corner of the lower rail is bent obliquely outward, The outer end of the rail is bent obliquely outwardly, and when the printed circuit board is inserted into the pair of upper and lower guide rails, the front end of the printed circuit board is positioned on the lower side on the lower side. The printed circuit board is in a state where the lower rail is opened downward by being in contact with the bent portion of the cable, and the tip of the printed circuit board is in contact with the bent portion of the upper rail and the upper rail is opened upward. It is mounted in the chassis, and in this state, the printed circuit board is fixed by being sandwiched between the lower rail and the upper rail by the upward returning force of the lower rail and the downward returning force of the upper rail. It is characterized by being configured.

  According to a second aspect of the present invention, the printed circuit board is mounted in the housing by inserting the printed circuit board into a pair of upper and lower guide rails provided on the left and right wall portions inside the housing. In the structure, the pair of upper and lower guide rails are provided with at least one gap portion at appropriate positions in the longitudinal direction, the lower rail and the upper rail are alternately provided in the gap portion, and the lower rail is provided obliquely upward, The upper rail is provided obliquely downward, and when the printed circuit board is inserted into the guide rail, the lower rail opens downward at the front end of the printed circuit board, and the upper rail is opened upward. A board is mounted in the housing, and in this state, the printed circuit board is moved downward by the upward return force of the lower rail and the downward return force of the upper rail. It is characterized by being configured to be secured in a state of being sandwiched between the upper rail and Lumpur.

  According to a third aspect of the present invention, the starting end of the lower rail is bent obliquely outward, the starting end of the upper rail is bent obliquely outward, and the tip of the printed circuit board is the lower rail. The lower rail is opened downward by abutting against the bent portion of the printed circuit board, and the upper rail is opened upward by contacting the bent portion of the upper rail with the tip of the printed circuit board.

  According to a fourth aspect of the present invention, the lower rail and the upper rail are alternately provided at two positions on the back side of the pair of upper and lower guide rails.

  According to a fifth aspect of the present invention, the lower rail and the upper rail are provided alternately in the front-rear direction on the front side from the start end of the pair of upper and lower guide rails and on the back side from the end.

  According to the first aspect of the present invention, the lower rail and the upper rail for fixing the printed circuit board are formed integrally with the chassis, so that no separate parts are required and no screws are used. The cost can be reduced. In addition, since the tips of the printed circuit boards inserted into the pair of upper and lower guide rails come into contact with the bent portions of the lower rail and the upper rail, the lower rail can be easily opened downward and the upper rail can be easily opened upward. Furthermore, since the printed circuit board can be held by the upward return force of the lower rail and the downward return force of the upper rail, the printed circuit board can be firmly held. Moreover, it is only necessary to insert the printed circuit board between the pair of upper and lower guide rails, the lower rail, and the upper rail, so that the working efficiency can be improved. Further, since the lower rail and the upper rail are alternately shifted, it is easy to insert the printed circuit board.

  According to the second aspect of the present invention, since the lower rail and the upper rail for fixing the printed circuit board are formed integrally with the housing, no separate parts are required and no screws are used. It can be simplified and the cost can be reduced. Furthermore, since the printed circuit board can be held by the upward return force of the lower rail and the downward return force of the upper rail, the printed circuit board can be firmly held. Moreover, it is only necessary to insert the printed board between the pair of upper and lower guide rails, the lower rail, and the upper rail, so that the working efficiency can be improved. Moreover, since the lower rail and the upper rail are alternately shifted, the printed board can be easily inserted.

  According to the invention described in claim 3, since the tip of the printed circuit board inserted into the pair of upper and lower guide rails comes into contact with the bent portions of the lower rail and the upper rail, the lower rail and the upper rail can be opened smoothly. It is easy to insert a printed circuit board.

  According to the fourth aspect of the present invention, the lower rail and the upper rail are alternately provided at two positions in the front and rear on the back side of the pair of upper and lower guide rails. Can be held even more firmly.

  According to the fifth aspect of the present invention, the printed circuit board is sandwiched between the lower rail and the upper rail on the front side from the start ends of the pair of upper and lower guide rails, and the lower rail and the upper rail on the back side from the end of the guide rail. The printed circuit board can be held more firmly and stably.

  Embodiments of a printed circuit board mounting structure according to the present invention will be described below with reference to the drawings.

  FIG. 1 is an exploded perspective view showing a first embodiment of a printed circuit board mounting structure according to the present invention, FIG. 2 is a partial perspective view of an essential part thereof, and FIG. 3 is a side view of a guide rail showing a state of mounting the printed circuit board. FIG. 4 is a side view of the guide rail showing a state when the printed circuit board is attached.

  As shown in FIG. 1, the printed circuit board mounting structure of the first embodiment is provided with a pair of upper and lower guide rails 2 on the lower side of the left and right wall portions of the chassis 1, and the rear side of the guide rail 2. Is provided with a gap. As shown in FIG. 2, the lower rail 3 and the upper rail 4 are alternately provided in the gap portion, and the lower rail 3 is inclined upward and the upper rail 4 is inclined downward. Further, the lower rail 3 is provided with a bent portion 5 bent obliquely outward at the starting end side outer corner, and the upper rail 4 is bent bent obliquely outward at the starting end side outer corner. Part 6 is provided.

  As shown in FIG. 3, the printed circuit board 7 is inserted into the pair of upper and lower guide rails 2, and the front end of the printed circuit board 7 comes into contact with the bent portion 5 of the lower rail 3 on the back side and the lower rail 3 opens downward. It is. Furthermore, the front end of the printed circuit board 7 comes into contact with the bent portion 6 of the upper rail 4 so that the upper rail 4 is opened upward. As a result, as shown in FIG. 4, the printed circuit board 7 is fixed in a state of being sandwiched between the lower rail 3 and the upper rail 4 by the upward restoring force of the lower rail 3 and the downward restoring force of the upper rail 4. The

  Therefore, according to the first embodiment, the lower rail 3 and the upper rail 4 that are fixed with the printed circuit board 7 sandwiched therebetween are formed integrally with the chassis 1, so that no separate parts are required and no screws are used. Therefore, the structure can be simplified and the cost can be reduced. Further, the tip of the printed circuit board 7 inserted into the pair of upper and lower guide rails 2 comes into contact with the bent portions 5 and 6 of the lower rail 3 and the upper rail 4, so that the lower rail 3 is on the lower side and the upper rail 4 is on the upper side. Can be opened easily. Furthermore, since the printed circuit board 7 can be clamped by the upward returning force of the lower rail 3 and the downward returning force of the upper rail 4, the printed circuit board 7 can be firmly held. In addition, since the printed circuit board 7 has only to be inserted between the pair of upper and lower guide rails 2, the lower rail 3 and the upper rail 4 when the printed circuit board 7 is attached, work efficiency can be improved. In addition, since the lower rail 3 and the upper rail 4 are alternately shifted, the printed circuit board 7 can be easily inserted.

  FIG. 5 is an exploded perspective view showing the printed circuit board mounting structure of the second embodiment, and FIG. 6 is a partial perspective view showing the main part thereof. Note that the same members and the same portions as those in the first embodiment described above are denoted by the same reference numerals and description thereof is omitted.

  As shown in FIGS. 5 and 6, the printed circuit board mounting structure of the second embodiment is formed by bending the edge portion of the starting end of the lower rail 3 obliquely outwardly to provide a bent portion 8. The edge portion of the starting end of the rail 4 is bent obliquely outward to provide a bent portion 9.

  Therefore, according to the second embodiment, the tips of the printed circuit boards 7 inserted into the pair of upper and lower guide rails 2 come into contact with the bent portions 8 and 9 of the lower rail 3 and the upper rail 4, respectively. The upper rail 4 can be opened smoothly, and the printed circuit board 7 can be easily inserted.

  FIG. 7 is a side view of the guide rail showing the printed circuit board mounting structure of the third embodiment. Note that the same members and the same portions as those in the first embodiment described above are denoted by the same reference numerals and description thereof is omitted.

  As shown in FIG. 7, the printed circuit board mounting structure of the third embodiment is such that the lower rail 3 and the upper rail 4 are alternately provided at two positions on the back and front of the pair of upper and lower guide rails 2. Yes.

  Therefore, according to the third embodiment, the lower rail 3 and the upper rail 4 are alternately provided at two positions on the back side of the pair of upper and lower guide rails 7, so that the lower rail 3 and the upper rail 4 can hold the printed circuit board more firmly.

  FIG. 8 is a side view of the guide rail showing the printed circuit board mounting structure of the fourth embodiment. Note that the same members and the same portions as those in the first embodiment described above are denoted by the same reference numerals and description thereof is omitted.

  In the printed circuit board mounting structure according to the fourth embodiment, the lower rail 3 and the upper rail 4 are alternately provided in front and rear from the beginning of the pair of upper and lower guide rails 7, and the lower side of the guide rail 7 is further down than the end. Rails 3 and upper rails 4 are provided alternately in the front-rear direction.

  Therefore, according to the fourth embodiment, printing is performed on the lower rail 3 and the upper rail 4 on the front side from the start ends of the pair of upper and lower guide rails 7 and on the lower rail 3 and the upper rail 4 on the rear side from the end of the guide rail 7. Since the board | substrate 7 is pinched | interposed, the printed circuit board 7 can be hold | maintained still more firmly and stably.

  In addition, although the said embodiment demonstrated what provided the guide rail 7, the lower rail 3, and the upper rail 4 in the chassis 1, not only this but a guide rail and a lower rail in the housing | casing of various electronic devices. Of course, the present invention can also be applied to a device provided with an upper rail.

1 is an exploded perspective view showing a first embodiment of a printed circuit board mounting structure according to the present invention. It is a fragmentary perspective view of the principal part of the attachment structure. It is a side view of the guide rail which shows the state which attaches the printed circuit board of the attachment structure. It is a side view of the guide rail which shows a state when the printed circuit board is attached to the mounting structure. It is a disassembled perspective view which shows the attachment structure of the printed circuit board of 2nd Embodiment. It is a fragmentary perspective view which shows the principal part of the attachment structure. It is a side view of the guide rail which shows the attachment structure of the printed circuit board of 3rd Embodiment. It is a side view of the guide rail which shows the attachment structure of the printed circuit board of 4th Embodiment. It is a perspective view which shows the conventional guide rail for card modules. It is sectional drawing which shows the chassis provided with the guide rail for card modules of FIG. It is a perspective view which shows the conventional board | substrate unit mounting apparatus. It is a partial abbreviation front view of the mounting apparatus. The spring seat board of the same mounting apparatus is shown, (a) is the perspective view, (b) is the front view. It is a perspective view of the board | substrate support mechanism of the conventional electronic device. (A) is the elements on larger scale of the support mechanism, (b) is a top view which shows the connector part of the support mechanism.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Chassis 2 Guide rail 3 Lower rail 4 Upper rail 5 Bending part 6 Bending part 7 Printed circuit board 8 Bending part 9 Bending part

Claims (5)

  In the printed board mounting structure in which a printed board is inserted into a pair of upper and lower guide rails provided on the left and right wall portions inside the chassis, and the printed board is mounted in the chassis, the pair of upper and lower guide rails are The chassis is terminated at a location near the back of the chassis, and the lower rail and the upper rail are alternately provided at the back of the chassis, the lower rail is provided obliquely upward, and the upper rail is provided obliquely downward. The outer end of the lower rail is bent obliquely outward, the outer end of the upper rail is bent obliquely outward, and the printed circuit board is connected to the pair of upper and lower guide rails. When inserted into the back, the tip of the printed circuit board is brought into contact with the bent portion of the lower rail on the back side, and the lower rail opens downward, and further, the tip of the printed circuit board is The printed circuit board is mounted in the chassis in a state in which the upper rail is in contact with the bent portion of the rail and the upper rail is opened upward. In this state, the upward return force of the lower rail and the downward return force of the upper rail The printed circuit board mounting structure according to claim 1, wherein the printed circuit board is fixed while being sandwiched between the lower rail and the upper rail.   In the printed board mounting structure in which a printed board is inserted into a pair of upper and lower guide rails provided on both the left and right wall portions inside the casing, and the printed board is mounted in the casing, the pair of upper and lower guide rails Is provided with at least one gap portion at appropriate positions in the longitudinal direction, the lower rail and the upper rail are alternately provided in the gap portion, the lower rail is provided obliquely upward, and the upper rail is provided obliquely downward. When the printed circuit board is inserted into the guide rail, the lower rail opens downward at the front end of the printed circuit board, and the printed circuit board is mounted in the housing with the upper rail opened upward. In this state, the printed circuit board is moved between the lower rail and the upper rail by the upward return force of the lower rail and the downward return force of the upper rail. Mounting structure of a printed circuit board, characterized by being configured to be secured by lifting state.   The start end of the lower rail is bent obliquely outward, the start end of the upper rail is bent obliquely outward, and the tip of the printed circuit board is in contact with the bent portion of the lower rail. The printed circuit board mounting structure according to claim 2, wherein the lower rail opens downward, and the tip of the printed circuit board contacts the bent portion of the upper rail so that the upper rail opens upward.   4. The printed circuit board mounting structure according to claim 2, wherein the lower rail and the upper rail are alternately provided at two positions on the back side of the pair of upper and lower guide rails. 5.   4. The printed circuit board mounting structure according to claim 2, wherein the lower rail and the upper rail are alternately provided in the front-rear direction on the front side of the pair of upper and lower guide rails and on the rear side of the terminal end.