JP2011159938A - Spacer - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a spacer which relates to one for fixing a printed board to a housing of a communication apparatus, and is capable of fixing the printed board in a short time, and fixing a printed board having a different board thickness with upper surface alignment without changing a housing. <P>SOLUTION: The spacer includes: a tubular spacer body 5 which is attached to a housing 3 and in which two facing slits 19, 21 are formed from an upper part of a circumferential wall 17 to a lower side, and a flange part 7 formed in the upper part can be pressed in a lower hole 15 on a printed board 13 side; and an annular coma member 25 which is inserted into the spacer body 5, and in which a screw 27 is screwed to the center part from the upper side of the spacer body 5, and blade pieces 35 penetrating the slits 19, 21 are projected to the outer periphery; wherein the coma member 25 moves upward in the space body 5 with tightening of the screw 27 to position and fix the printed board 13 between the flange part 7 and the blade pieces 35. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a spacer used when a printed circuit board is fixed to a housing of a communication device.

  Conventionally, when a printed circuit board is fixed to a mold housing of a communication device, a pedestal is provided on the mold housing side, and the printed circuit board is placed thereon and screwed.

  In general, however, the printed circuit board has a constant thickness of about 1.5 mm. In the future, however, the thickness will be reduced due to cost reduction and material weight reduction. It is assumed that the thickness increases to increase the plate thickness.

  By the way, it is necessary to fix the printed circuit board to the mold housing by aligning the upper surface. If the thickness of the printed circuit board changes due to the change in the plate thickness, the height of the connector, light emitting diode, etc. will shift. It becomes necessary to change the height of the pedestal by changing the housing.

  However, since the change of the mold housing once developed is a mold remodeling, the actual situation is that the cost and the period are too large to be changed easily.

  In addition, when mold housings are made according to differences in the thickness of printed circuit boards in this way, the difference is minor, so there is a risk of mistakes during assembly work, and problems with lack of reliability have been pointed out. Yes.

  On the other hand, Patent Document 1 discloses a printed circuit board mounting structure that can change the mounting height of the printed circuit board in two steps.

JP 2009-43968 A

  However, the conventional example disclosed in Patent Document 1 only allows the printed circuit board to be attached to the housing in two levels, and the printed circuit boards having different plate thicknesses are always fixed to the mold housing by aligning the top surfaces. It was not possible.

  The present invention has been devised in view of such circumstances, and a spacer that can fix a printed circuit board in a short time and can fix printed circuit boards having different thicknesses by aligning the upper surfaces without changing the housing. The purpose is to provide.

  In order to achieve such an object, the spacer according to claim 1 is attached to the housing, and the two opposing slits are formed downward from the upper part of the peripheral wall, and the flange provided on the upper part is a pilot hole on the printed circuit board side. A cylindrical spacer body that can be press-fitted into the spacer body, and an annular ring that is inserted into the spacer body, a screw is screwed into the center from above the spacer body, and a blade piece that passes through the slit projects from the outer periphery. It is characterized by comprising a top member, and with the tightening of the screw, the top member moves upward in the spacer body and positions and fixes the printed circuit board between the flange and the blade piece.

  The invention according to claim 2 is characterized in that, in the spacer according to claim 1, the upper peripheral edge of the flange is formed in a taper shape, and the invention according to claim 3 is The spacer according to claim 1 or 2, wherein the lower peripheral edge of the flange is formed in a tapered shape, and the invention according to claim 4 further comprises claims 1 to 4. The spacer according to any one of 3 above, wherein a concave operation portion capable of pressing the flange portion inwardly is provided at an upper peripheral edge portion of the flange portion.

  According to a fifth aspect of the present invention, in the spacer according to any one of the first to fourth aspects, the casing is a molded casing, and the spacer body is integrally formed with the molded casing. According to a sixth aspect of the present invention, in the spacer according to any one of the first to fourth aspects, the spacer main body is fixed to the housing via a mounting screw. It is characterized by being.

  Furthermore, the invention according to claim 7 is the spacer according to any one of claims 1 to 4, wherein the spacer body is integrally formed with a screw member at a bottom portion, and the screw member has a nut. The invention according to claim 8 is characterized in that the spacer according to any one of claims 1 to 7 is screwed to the piece member. The screw to be screwed is a flat tapping screw, and the upper inner periphery of the spacer body is formed in a taper shape along the head of the flat tapping screw.

  For example, when the printed circuit board is fixed to the mold housing using the spacers according to the claims, all the printed circuit boards having different plate thicknesses can be easily molded at the same upper surface height without changing the mold housing. It becomes possible to position and fix to the housing, and as a result, there is an advantage that cost reduction can be achieved because it is not necessary to modify the mold accompanying the change of the mold housing.

  And since there is no need to make a separate mold housing corresponding to the difference in thickness of the printed circuit board in this way, there is no risk of the mold housing being replaced during the assembly work of the printed circuit board, and the advantage of improving reliability Have

  Further, according to the inventions according to claim 2 and claim 3, by providing the tapered portion at the upper peripheral portion or the lower peripheral portion of the flange portion of the spacer main body, the flange portion (spacer to the prepared hole provided in the printed circuit board is provided. The main body) can be easily inserted and removed.

  On the other hand, according to the invention according to claim 4, since the operation portion is provided in the collar portion of the spacer body, the jig slides by sandwiching a jig such as pliers between the operation portions when removing the printed circuit board. The buttock can be surely pressed inward without any problems.

  According to the invention of claim 5, since the spacer main body is integrally formed with the mold casing, it is not necessary to retrofit the spacer main body to the mold casing when attaching the printed circuit board to the mold casing. There is an advantage that it is not necessary to manage the parts of the spacer body.

  Further, according to the inventions according to claims 6 and 7, since the spacer main body is formed separately from the housing, the number of spacer main bodies and the mounting position can be adjusted according to the specifications. Is possible.

  Furthermore, as in the invention according to claim 8, when the screw to be screwed to the top member is a flat tapping screw and the upper inner periphery of the spacer body is formed in a taper shape along the head of the flat tapping screw, When the tapping screw is tightened to the end, the taper surface of the head presses the upper part of the spacer body through the taper portion toward the peripheral edge of the pilot hole, so that the printed circuit board can be held firmly. Have.

It is a disassembled perspective view of the spacer which concerns on one Embodiment of Claim 1 thru | or Claim 5 and Claim 8. It is a whole perspective view of a spacer. It is explanatory drawing of the attachment method of the printed circuit board using a spacer. It is explanatory drawing of the attachment method of the printed circuit board using a spacer. It is explanatory drawing of the attachment method of the printed circuit board using a spacer. It is explanatory drawing of the attachment method of the printed circuit board using a spacer. It is explanatory drawing of the attachment method of the printed circuit board using a spacer. It is a disassembled perspective view of the spacer which concerns on 1st embodiment of Claim 1 thru | or Claim 4, Claim 7, and Claim 8. It is a whole perspective view of a spacer. It is explanatory drawing of the attachment method of the printed circuit board using a spacer. It is explanatory drawing of the attachment method of the printed circuit board using the spacer which concerns on one Embodiment of Claims 1 thru | or 5 and Claim 7. It is explanatory drawing of the attachment method of the printed circuit board using the spacer which concerns on 2nd embodiment of Claim 1 thru | or Claim 4, Claim 7, and Claim 8. It is sectional drawing of the spacer main body of the spacer which concerns on one Embodiment of Claim 1 thru | or 4, 6 and 8. It is explanatory drawing of the attachment method of the printed circuit board using the spacer which concerns on one Embodiment of Claims 1 thru | or 4, 6 and 8. It is explanatory drawing of the attachment method of the printed circuit board using the spacer of FIG. 8, and the spacer of FIG.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

  FIGS. 1 to 7 show an embodiment of a spacer according to claims 1 to 5 and claim 8. In FIG. 1, 1 is a bottom portion of a mold casing 3 of a communication device, and 5 is a bottom portion 1. A bottomed cylindrical spacer body integrally formed on the upper surface of the spacer body 5 is provided with an annular flange 7 protruding outward from the upper portion of the spacer body 5.

  As shown in FIGS. 1 to 3, taper portions 9 and 11 are provided on the upper peripheral portion and the lower peripheral portion of the flange portion 7, respectively. By providing the upper peripheral portion and the lower peripheral portion, as will be described later, when attaching / removing the printed board 13 to / from the mold housing 3, the flange portion 7 (spacer body) to the prepared hole 15 provided in the printed board 13 is provided. 5) can be easily inserted and removed.

  The peripheral wall 17 of the spacer body 5 is slightly smaller in diameter than the pilot hole 15 and can be inserted into the pilot hole 15. Two peripheral walls 17 are provided on the peripheral wall 17 from the flange portion 7 to the lower side of the spacer main body 5. Slits 19 and 21 are formed to face each other. As shown in FIG. 3, the inner periphery 23 of the spacer body 5 formed in a cylindrical shape is formed in a smooth circumferential shape in the vertical direction. A taper portion 31 is provided along the taper shape of the head 29 of the counter tapping screw 27 to be screwed into 25.

  As shown in FIGS. 1 to 3, a resin frame member 25 is inserted into the spacer body 5.

  As shown in the figure, the top member 25 has a cylindrical portion 33 formed in a cylindrical shape along the inner periphery 23 of the spacer main body 5, and 2 projecting on the outer periphery of the cylindrical portion 33 so as to be flush with the upper and lower sides of the cylindrical portion 33. Each of the two blade pieces 35 is formed with a thickness that allows the slits 19 and 21 to be inserted therethrough, and is spaced radially by 180 °. Has been placed.

  Then, as shown in FIGS. 1 to 7, a flat tapping screw 27 is screwed into the center of the cylindrical portion 33, and the blade piece 35 is inserted from above the slits 19 and 21. After the piece member 25 is inserted into the spacer body 5 and then inserted into the center of the cylindrical portion 33 of the piece member 25, the tapping screw 27 is screwed into the slit 19, 21. The top member 25 that is inserted and whose rotation is restricted moves upward in the spacer body 5 sequentially as the counter tapping screw 27 is screwed. Then, when the printed board 13 is attached to the mold housing 3, the printed board 13 is sandwiched from above and below between the blade piece 35 of the top member 25 moved upward and the flange portion 7 as shown in FIG. It can be positioned and fixed.

  In addition, in FIG. 1, 37 is a concave operation part formed in the taper part 9 (upper peripheral part of the collar part 7) of the collar part 7, and the said operation part 37 is 180 degree intervals on both sides of the slits 19 and 21. When the collar portion 7 (spacer body 5) is pulled out from the pilot hole 15, when the collar portion 7 is pressed inward by sandwiching both operation portions 37 with a jig such as pliers, the slit 19 The upper portion of the spacer body 5 with the 21 sandwiched therebetween is deformed inward so that the flange portion 7 can be easily pulled out from the prepared hole 15.

  As described above, the spacer 39 according to this embodiment includes the spacer main body 5, the piece member 25, and the counter tapping screw 27 screwed into the piece member 25. As an example, the spacer main body 5 includes the mold case 3. One by one is formed at the bottom 1 near the four corners.

  Next, a method for attaching the printed circuit board 13 to the mold housing 3 using the spacer 39 will be described.

  First, as shown in FIGS. 1 and 2, the blade piece 35 is inserted into the slits 19, 21 and the piece member 25 is inserted into the spacer body 5, and then the counter tapping screw is placed at the center of the cylindrical portion 33 of the piece member 25. 27, the tap is cut, and the tip of the counter tapping screw 27 is screwed to the top member 25.

  Next, as shown in FIG. 3, the printed circuit board 13 is applied to the flange portion 7 at the top of the spacer body 5.

  As shown in FIG. 2, a plurality of pilot holes 15 are provided in advance in the printed circuit board 13 corresponding to the plurality of spacer bodies 5 integrally formed in the mold housing 3. Therefore, as shown in FIG. 3, when the peripheral edge of the lower hole 15 of the printed circuit board 13 is brought into contact with the tapered portion 9 of the flange 7 on the upper part of the spacer main body 5 and the printed circuit board 13 is pushed downward, the slits as shown in FIG. As the upper portion of the spacer body 5 sandwiching 19 and 21 is deformed inward, the tapered portion 9 guides the printed circuit board 13 to the lower side of the spacer body 5, and the flange portion 7 is lowered as shown in FIG. The printed circuit board 13 is disposed above the blade portion 35 of the top member 25 through the hole 15.

  Thereafter, as shown in FIG. 6, when the counter tapping screw 27 having the tip screwed to the piece member 25 is further screwed in with the tap cut, the piece member 25 whose rotation is restricted as described above is obtained. As the counter tapping screw 27 is screwed in as shown in FIG. 6, the spacer body 5 moves upward, and at the same time, the blade portion 35 pushes up the printed board 13.

  When the flat tapping screw 27 is tightened to the end, as shown in FIG. 7, the printed circuit board 13 is sandwiched from above and below between the blade piece 35 of the top member 25 moved upward and the collar portion 7, and fixed. At the same time, the taper surface of the head 29 of the countersunk tapping screw 27 formed in a tapered shape has a lower hole 15 above the spacer body 5 sandwiching the slits 19 and 21 via the taper part 31 on the counter tapping screw 27 side. Is pressed in the peripheral direction (in the direction of arrows A and B in the figure) to strengthen the holding of the printed circuit board 13.

  Further, when removing the printed circuit board 13, after loosening the counter tapping screw 27, as described above, sandwiching the two operation parts 37 of the collar part 7 with a jig such as pliers, the collar part 7 is moved inward. What is necessary is just to press, the upper part of the spacer main body 5 which pinched | interposed the slits 19 and 21 deform | transforms inward, the collar part 7 can be pulled out from the prepared hole 15, and the printed circuit board 13 can be removed.

  And since the taper part 11 is provided in the lower peripheral part of the collar part 7, when removing the printed circuit board 13, while the upper part of the spacer main body 5 which pinched | interposed the slits 19 and 21 deform | transformed inward, a taper part 11 guides the printed circuit board 13 to the upper side of the spacer body 5, and the flange portion 7 easily comes out of the prepared hole 15.

  On the other hand, when a printed circuit board (not shown) having a plate thickness different from that of the printed circuit board 13 is attached to the mold housing 3 via the spacer 39, a plurality of printed circuit boards having different plate thicknesses are attached to the mold housing 3 side. A plurality of pilot holes may be provided in advance corresponding to the spacer body 5.

  And although not shown in figure, by taking the same procedure as the mounting method of the said printed circuit board 13, the printed circuit board from which board thickness differs is pinched | interposed between the blade piece 35 and the collar part 7 of the top member 25 from the upper and lower sides. At this time, as shown in FIG. 7, a printed board having a plate thickness different from that of the printed board 13 is also positioned in the mold housing 3 at the same upper surface height P as the printed board 13.

  As described above, by using the spacer 39 according to the present embodiment, all the printed boards having different plate thicknesses are positioned and fixed to the mold casing 3 at the same upper surface height P without changing the mold casing 3. As a result, there is an advantage that cost reduction can be achieved because the mold remodeling associated with the change of the mold casing is unnecessary. And since there is no need to make a separate mold housing corresponding to the difference in thickness of the printed circuit board in this way, there is no risk of the mold housing being replaced during the assembly work of the printed circuit board, and the advantage of improving reliability Have

  Then, with the mounting method described above, it is possible to easily position and fix all the printed boards having different plate thicknesses to the mold housing 3 by aligning the top surfaces, and the upper peripheral edge of the flange portion 7 of the spacer body 5 By providing the taper portions 9 and 11 at the lower peripheral edge portion, it is possible to easily insert and remove the flange portion 7 (spacer main body 5) from the prepared hole 15 provided in the printed circuit board 13.

  Further, since the tapered portion 31 is provided on the inner periphery of the upper portion of the spacer body 5 along the tapered shape of the head 29 of the counter tapping screw 27, as described above, when the counter tapping screw 27 is tightened to the end, the head 29 7 has an advantage that the holding of the printed circuit board 13 can be strengthened because the upper surface of the spacer body 5 is pressed in the directions of arrows A and B in FIG.

  Furthermore, since the operation portion 37 is provided on the collar portion 7 of the spacer body 5, when removing the printed circuit board 13, a jig such as pliers is sandwiched between the operation portions 37 so that the jig does not slip. The flange portion 7 can be pressed inward, and the spacer body 5 is integrally formed with the mold housing 3. Therefore, when the printed circuit board 13 is attached to the mold housing 3, the spacer body 5 is retrofitted to the mold housing 3. There is an advantage that the parts management of the spacer body 5 becomes unnecessary.

  FIGS. 8 to 10 show a first embodiment of a spacer according to claims 1 to 4, 7, and 8. As shown in the figure, the spacer 41 according to this embodiment is the spacer except for the bottom. A screw member (screw shaft) 43 is integrally formed on the bottom of a resin spacer main body 5-1 having the same outer shape as the main body 5, and a resin nut 45 is screwed onto the screw member 43 to form a molded housing. A spacer main body 5-1 is fixed to the bottom 1 of FIG. 3, and a plurality of screw insertion holes 47 for screwing the spacer main body 5-1 are provided in the bottom 1.

  Since other configurations are the same as those of the above-described embodiment, the same components are denoted by the same reference numerals and description thereof is omitted.

  Also, the printed board 13 is attached using the spacer 41 after the nut 45 is screwed onto the screw member 43 and the spacer body 5-1 is fixed to the bottom 1 of the mold housing 3, and then the same as in the above embodiment. In this procedure, the printed circuit board 13 may be attached using the top member 25 and the counter tapping screw 27, and the description thereof will be omitted.

  The spacer 41 according to the present embodiment is configured as described above. According to the present embodiment, similar to the above embodiment, the intended purpose can be achieved. It is possible to position and fix all printed circuit boards having different plate thicknesses to the mold housing 3 with the same top surface height P without changing 3, and as a result, mold remodeling accompanying the change of the mold housing is possible. There is an advantage that it becomes unnecessary and the cost can be reduced.

  In this embodiment, since the spacer body 5-1 is formed separately from the mold housing 3, the number of spacer bodies 5-1 and the mounting position can be adjusted according to the specifications. It becomes possible.

  Although the counter tapping screw 27 is used in each of the above-described embodiments, a flat washer is used instead of the counter tapping screw 27 as in one embodiment of the first to fifth and seventh aspects shown in FIG. A pan tapping screw 53 incorporating 49 and a spring washer 51 may be used.

  Thus, with the spacer 55 according to the present embodiment, the intended purpose can be achieved as in the above-described embodiments, and the mold housing 3 can be changed by using the spacer 55. Without any problem, it is possible to position and fix all the printed boards having different plate thicknesses to the mold housing 3 with the same upper surface height P.

  FIG. 12 shows a second embodiment of the spacer according to claims 1 to 4, 7, and 8, and the spacer main body 5-2 of the spacer 57 according to this embodiment is the spacer main body 5-1. A taper part 59 is formed at the bottom of the screw and a taper part 61 is provided on the upper peripheral edge of the screw insertion hole 47 corresponding to the taper part 59.

  Since other configurations are the same as those of the embodiment of FIG. 8, the same components are denoted by the same reference numerals and description thereof is omitted.

  The present embodiment is configured as described above. According to this embodiment as well, it is possible to achieve the intended purpose, and all printed circuit boards having different plate thicknesses can have the same top surface height. It is possible to position and fix to the mold housing 3 with the length P.

  In addition, since the tapered portion 59 is formed at the bottom of the spacer body 5-2 and the tapered portion 61 is provided on the bottom 1 side corresponding to the tapered portion 59, the bottom portion Since the installation area of the spacer main body 5-2 with respect to 1 is increased and the spacer main body 5-2 is positioned and held by the tapered portions 59 and 61, the spacer main body 5-2 can be fixed to the bottom 1 with a right angle. Has the advantage of being able to.

  FIGS. 13 and 14 show one embodiment of the spacer according to claims 1 to 4, 6 and 8, and the spacer 63 according to this embodiment has the same outer shape as the spacer main body 5 of FIG. 1. A resin-made spacer main body 5-3 having a shape is formed separately from the bottom 1 of the mold housing 3, and the spacer main body 5-3 is fixed to the bottom 1 with a flat tapping screw 65 as a mounting screw. Screw insertion holes 69 and 71 for flat tapping screws 65 are provided in the bottom 67 of the spacer body 5-3 and the bottom 1 of the mold housing 3, respectively. Although not shown, a plurality of screw insertion holes 71 are appropriately provided on the bottom 1 of the mold housing 3 in order to fix the plurality of spacer bodies 5-3.

  In addition, since the other structure is the same as that of the said embodiment, the same code | symbol is attached | subjected to the same thing and those description is abbreviate | omitted.

  In addition, the printed board 13 is attached using the spacer 63 after the spacer body 5-3 is fixed to the bottom 1 with the dish tapping screw 65, and then the piece member 25 and the dish are processed in the same procedure as in the embodiment of FIG. Since the printed circuit board 13 may be attached using the tapping screw 27, the description thereof is omitted.

  The present embodiment is configured as described above, and also according to the present embodiment, the intended purpose can be achieved as in the above-described embodiments. By using the spacer 63, the mold housing 3 can be achieved. It is possible to position and fix all the printed boards having different plate thicknesses to the mold housing 3 by aligning the top surfaces (P in FIG. 14) without changing the thickness, and the spacer body 5-3 can be fixed to the mold housing. Since it is formed separately from the body 3, it is possible to deal with a wide range of products, such as adjusting the number of spacer bodies 5-3 and the mounting position according to the specifications.

  FIG. 15 shows an embodiment in which the two printed boards 13 and 13-1 are fixed to the bottom 1 of the mold housing 3 at intervals of two upper and lower stages using the spacer 41 of FIG. 8 and the spacer 63 of FIG. In this embodiment, the screw member 43-1 provided at the bottom of the spacer body 5-1 is made to function as a tapping screw, and this is screwed to the frame member 25 on the spacer 63 side to be spacer bodies 5-1, 5 -3 is connected up and down.

  Hereinafter, a method for attaching the printed circuit boards 13 and 13-1 using the spacer 41 and the spacer 63 will be described. First, the spacer main body 5-3 is fixed to the bottom 1 of the mold housing 3 with a flat tapping screw 65.

  Then, after the blade piece 35 is inserted into the slits 19 and 21 and the frame member 25 is inserted into the spacer body 5-3, the pilot hole of the printed circuit board 13 is formed in the tapered portion 9 of the flange portion 7 above the spacer body 5-3. When the printed circuit board 13 is pushed downward by abutting the periphery of 15, the taper portion 9 causes the printed circuit board 13 to be a spacer while the upper portion of the spacer body 5-3 sandwiching the slits 19 and 21 is deformed inward. The printed circuit board 13 is arranged on the upper portion of the blade portion 35 of the top member 25 while being guided below the main body 5.

  Next, if the screw member 43-1 of the spacer main body 5-1 is screwed into the center of the cylindrical portion 33 of the top member 25 in the spacer main body 5-3, the rotation is restricted. As the screw member 43-1 is screwed in, the member 25 moves upward in the spacer body 5-3, and at the same time, the blade portion 35 pushes up the printed circuit board 13.

  Then, when the screw member 43-1 is tightened to the end, as shown in FIG. 15, the printed board 13 is sandwiched from above and below between the blade piece 35 of the top member 25 that has moved upward and the collar part 7, and fixed. At the same time, the spacer body 5-1 is connected to the spacer body 5-3.

  Thereafter, the second printed circuit board 13-1 in which the pilot holes 15 are formed may be mounted using the spacer 41 by using the same mounting method, and all the printed circuit boards having different plate thicknesses are attached in this way. What is necessary is just to attach to upper and lower two steps.

  As described above, according to this embodiment, it is possible to easily position and fix all the printed boards having different plate thicknesses in the upper and lower two stages at the same upper surface height P, P1, and to change the mold housing. There is an advantage that cost reduction can be achieved because the accompanying mold modification is unnecessary.

  And since there is no need to make a separate mold housing corresponding to the difference in thickness of the printed circuit board in this way, there is no risk of the mold housing being replaced during the assembly work of the printed circuit board, and the advantage of improving reliability Have

  In addition to the combination of the spacer 41 and the spacer 63 in FIG. 15, for example, the spacer 39 in FIG. 1 and the spacer 41 in FIG. 8 or the spacer 41 in FIG. 8 and the spacer 57 in FIG. It is possible to easily position and fix all the printed circuit boards with different upper and lower two levels with the same upper surface height P and P1.

  In each of the embodiments described above, the case has been described in which the case is a molded case. However, the present invention can also be applied to a case where the printed board is fixed to a metal case. The spacer body and the top member are formed of a metal separate from the housing, and a normal flat head screw is used in place of the flat tapping screw, and the inner periphery of the top member is screwed so that the flat head screw can be screwed. Just engrave it.

  Thus, according to such an embodiment, as in the above-described embodiments, the intended purpose can be achieved, and all printed circuit boards having different plate thicknesses can be easily formed with the same top surface height. It has the advantage that it can be positioned and fixed.

DESCRIPTION OF SYMBOLS 1, 67 Bottom part 3 Mold housing | casing 5, 5-1, 5-2, 5-3 Spacer main body 7 Gutter part 9, 11, 31, 59, 61 Tapered part 13 Printed circuit board 15 Pilot hole 17 Perimeter wall 19 of spacer main body, 21 Slit 25 Top member 27, 65 Countersunk tapping screw 29 Head 33 Tubular part 35 Blade piece 37 Operation part 39, 41, 55, 57, 63 Spacer 43, 43-1 Screw member 45 Nut 47, 69, 71 Screw insertion Hole 53 Pan tapping screw

Claims (8)

A cylindrical spacer body that is attached to the housing and has two opposing slits formed downward from the upper part of the peripheral wall, and a collar provided on the upper part can be press-fitted into the prepared hole on the printed circuit board side;
It is inserted into the spacer body, a screw is screwed into the center from above the spacer body, and a blade is inserted through the slit, and an annular frame member is provided on the outer periphery.
As the screw is tightened, the top member moves upward in the spacer body to position and fix the printed circuit board between the flange and the blade.   The spacer according to claim 1, wherein an upper peripheral edge portion of the flange portion is formed in a tapered shape.   The spacer according to claim 1 or 2, wherein a lower peripheral edge portion of the flange portion is formed in a tapered shape.   The spacer according to any one of claims 1 to 3, wherein a concave operation part capable of pressing the collar part inwardly is provided at an upper peripheral edge part of the collar part. .   The spacer according to any one of claims 1 to 4, wherein the casing is a molded casing, and the spacer main body is integrally formed with the molded casing.   The spacer according to any one of claims 1 to 4, wherein the spacer main body is fixed to the housing via a mounting screw.   5. The spacer body according to claim 1, wherein a screw member is integrally formed at a bottom portion of the spacer body, and a nut is screwed onto the screw member to be fixed to the housing. Spacers. The screw to be screwed onto the top member is a flat tapping screw, and the upper inner periphery of the spacer body is formed in a tapered shape along the head of the flat tapping screw. 8. The spacer according to any one of 7 above.

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