JP4914405B2 - Electrolytic capacitor fixing device - Google Patents

Description

  The present invention relates to an electrolytic capacitor fixing device, and more particularly to an electrolytic capacitor fixing device that fixes an electrolytic capacitor having a reduced component height by bending a lead of the electrolytic capacitor mounted on the printed circuit board.

  In recent years, the shape of electrical components mounted on packages constituting communication devices and the like has been on the trend of miniaturization, and as a result, many of the electrical components used are also reduced in height and used for communication devices and the like. The mounting interval in a unit mounting a plurality of packages is becoming smaller and smaller year by year.

  By the way, there are still tall parts such as electrolytic capacitors (hereinafter referred to as “capacitors”) among the electric parts used, and depending on the circuit, the short parts such as chip parts and ICs are low. In many cases, there are a plurality of tall components such as capacitors in a circuit composed of components.

  Thus, conventionally, in such a case, as shown in FIG. 12, the lead 3 of the capacitor 1 which is a tall component is bent at a right angle so that the main body portion 5 of the capacitor 1 is placed horizontally with the printed circuit board 7. The method of doing is widely adopted. The main body portion 5 of the capacitor 1 is fixed to the printed circuit board 7 using an adhesive 9 for the purpose of preventing the capacitor 1 from lifting and protecting the lead 3.

  However, in this way, the fixing method of the capacitor 1 using the adhesive 9 takes a long time to dry the adhesive 9, and is a bottleneck in the production process.

  In view of such circumstances, Patent Document 1 proposes a semiconductor element fixing device instead of an adhesive.

  As shown in FIGS. 13 and 14, this semiconductor element fixing device uses a metal piece 13 provided with a through hole 11 adapted to the main body portion 5 of the capacitor 1 in which the lead 3 is bent to lower the component height. A pair of left and right through-hole insertion portions 15 are provided as legs on the bottom of the metal piece 13, and two through-holes 17 are provided in the printed circuit board 7 corresponding to both through-hole insertion portions 15. The metal piece 13 is fixed to the printed circuit board 7 by soldering the through-hole insertion portion 15 to the printed circuit board 7 in the same manner as the lead 3.

The fixing device prepares a plurality of kinds of metal pieces in which through holes matching the diameter of the main body of the capacitor are prepared, and appropriately selects and uses the metal pieces according to the diameter of the capacitor to be used. is there.
JP-A-6-152116

  However, the fixing device disclosed in Patent Document 1 must solder the leads and the pair of left and right through-hole insertion portions to the printed board when mounting the capacitor on the printed board. There is a drawback that the work becomes complicated due to the increase.

  However, as described above, since the fixing device must prepare a plurality of types of metal pieces for each capacitor having different diameters, it is troublesome to manage the parts and manufactures a plurality of types of metal pieces. However, it was pointed out that it was expensive.

  The present invention has been devised in view of such circumstances, and can be adapted to capacitors having different diameters when bending a lead to lower the component height and mounting and fixing the capacitor on a printed circuit board. An object of the present invention is to provide a capacitor fixing device capable of easily fixing a capacitor to a printed circuit board without using soldering or an adhesive.

  In order to achieve such an object, a capacitor fixing device according to a first aspect of the present invention includes a mounting hole formed in a peripheral portion with a pair of opposing locking claws that are opened in a printed circuit board, and a lead is bent to increase the component height. A circular insertion hole through which a capacitor having a reduced height is inserted and a single elastic strip-like plate material formed with a locking hole for locking each locking claw. A pawl and a locking hole are elastically locked, and both ends of the mounting hole are inclined and attached, and a peripheral portion of the insertion hole sandwiches and fixes the outer periphery of the capacitor from above and below. .

  According to a second aspect of the present invention, in the capacitor fixing device according to the first aspect, the plate member is formed with the locking holes at both end sides, and the two insertion holes are inside the locking holes. According to a third aspect of the invention, in the capacitor fixing device according to the first aspect, the plate member has two locking holes arranged in parallel at one end side. One of the insertion holes is provided on the other end side.

  According to a fourth aspect of the present invention, in the capacitor fixing device according to any one of the first to third aspects, the insertion hole has an outer diameter of a plurality of types of capacitors according to specifications. Is also formed in a large diameter.

  On the other hand, a capacitor fixing device according to a fifth aspect of the present invention includes an attachment hole having a pair of opposed locking claws formed in a peripheral edge thereof, and a locking hole for locking the locking claws. A stretchable strip is formed in the vicinity of each locking hole along the locking hole, and is made of a single strip of elastic material. The capacitor fixing device according to claim 5, wherein the capacitor is fixed and attached to the mounting hole in an inverted U-shaped cross section, and the capacitor is held and fixed therein. The plate member is characterized in that a notch for heat dissipation is provided at a portion that contacts the outer periphery of the capacitor.

  According to a seventh aspect of the present invention, there is provided a capacitor fixing device comprising: a rectangular mounting hole provided in a printed circuit board; and a pair of opposing circular insertion holes through which a capacitor whose lead height is lowered by bending a lead is inserted. And a pair of opposing engaging holes with which the peripheral edge of the mounting hole engages are formed on a peripheral wall, and the elastic body is formed with a diameter larger than the width of the mounting hole, A peripheral portion of the attachment hole is engaged with the engagement hole, and the elastic body is fixed to the attachment hole.

  According to the first to sixth aspects of the present invention, it is not necessary to solder the plate material to the printed circuit board when the capacitor is laid on the printed circuit board, and the engagement claw and the engagement hole are elastically engaged with one touch. If the plate material is attached to the printed circuit board while being stopped, the capacitor can be easily fixed to the printed circuit board via the plate material, so that the workability is remarkably improved as compared with the conventional case.

  According to the second aspect of the present invention, the capacitor is firmly fixed because the front and rear outer peripheries of the two insertion holes are sandwiched from above and below by the peripheral portions of the two insertion holes. According to the invention, since only one insertion hole for inserting the capacitor is required, there is an advantage that the operation is simple.

  In addition, according to the inventions according to claims 4 and 5, there is an advantage that a single plate material can be used for a plurality of types of capacitors having different diameters.

  Furthermore, according to the invention which concerns on Claim 6, since the notch for heat radiation was provided in the board | plate material which hold | grips the outer periphery of a capacitor | condenser, favorable heat dissipation of a capacitor | condenser can be aimed at.

  According to the seventh aspect of the present invention, when the capacitor is laid and mounted on the printed circuit board, the lower part of the elastic body is squeezed and inserted into the mounting hole, and then the elastic body is simply released. Since the peripheral edge of the mounting hole engages with the engagement hole by the restoring force of the elastic body, the elastic body attaches to the mounting hole, and the capacitor can be easily fixed to the printed circuit board via the elastic body. However, there is an advantage that workability is remarkably improved.

  In addition, according to the present invention, a single elastic body can be used for a plurality of types of capacitors having different diameters, and the capacitor is clamped using the elastic force of the elastic body, so that the capacitor is firmly fixed. It is possible.

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

  1 to 3 show a capacitor fixing device according to one embodiment of claims 1, 2 and 4, wherein in FIG. 1, reference numeral 21 denotes a body portion 25 which is formed by bending two leads 23 at a right angle. A capacitor whose component height is lowered so as to be horizontal with the printed circuit board 27, two through holes 29 are formed in the printed circuit board 27 corresponding to the leads 23, and an attachment hole 31 is provided in the vicinity of the through hole 29. ing.

  As shown in FIG. 1, the mounting hole 31 is formed in a rectangular shape in plan view along the two through holes 29, and a pair of the mounting holes 31 are formed at the center of the two peripheral portions 31 a and 31 b on the through hole 29 side and the anti-through hole 29 side. The opposing rectangular locking claws 33 project inwardly.

  On the other hand, in the figure, reference numeral 35 denotes a plate material that is attached to the mounting hole 31, and the plate material 35 is formed in a strip shape by an elastic and insulating Mylar sheet as an example. As shown in FIG. 1, the left and right ends 35 a and 35 b of the plate member 35 can be inserted into the mounting hole 31, and the width dimension m is substantially the same as the lateral dimension n of the mounting hole 31 to prevent rattling. Is set.

  Further, as shown in FIG. 2, locking holes 37 for locking to the locking claws 33 are formed on both end sides 35 a and 35 b of the plate member 35, and inside the locking holes 37, the capacitor 21 Two insertion holes 39 having a circular shape in plan view through which the main body portion 25 can be inserted are provided. Both insertion holes 39 have a diameter larger than the outer diameters of a plurality of types of capacitors including the capacitor 21 according to specifications. Is formed. The plate member 35 is formed symmetrically about the central axis o, and when the plate member 35 is bent into a U-shaped cross section with the central axis o as shown in FIG. 1, a pair of insertion holes 39 are formed. A pair of locking holes 37 are arranged to face each other.

  Then, after inserting the main body portion 25 of the capacitor 21 between the insertion holes 39 in such a state, the both end sides 35a and 35b of the plate member 35 are inserted into the mounting hole 31, and the both end sides 35a and 35b are outward. When the locking claw 33 and the locking hole 37 are elastically locked while being expanded, the both end sides 35a and 35b of the plate member 35 are attached to the mounting hole 37 as shown in FIG. The peripheral portion of the capacitor sandwiches and fixes the front and rear outer peripheries of the capacitor 21 (main body portion 25) from above and below.

  Since the fixing device 41 according to the present embodiment is configured as described above, in order to lay the capacitor 21 on the printed circuit board 27, the plate member 35 is bent into a U-shaped cross section as shown in FIG. After inserting the main body portion 25 of the capacitor 21 between them, the both ends 35 a and 35 b of the plate material 35 are inserted into the mounting holes 31 of the printed board 27 while the leads 23 of the capacitor 21 are inserted into the through holes 29. Then, when both end sides 35a and 35b of the plate material 35 are expanded outwardly and the locking claws 33 and the locking holes 37 are elastically locked, both end sides 35a and 35b of the plate material 35 are shown in FIG. The peripheral portion of the insertion hole 39 sandwiches and fixes the front and rear outer circumferences of the capacitor 21 from the vertical direction. Finally, the leads 23 may be soldered from the back side of the printed circuit board 27.

  In addition, there are a plurality of types of capacitors with different diameters of the main body according to the specifications. However, as described above, the insertion hole 39 is formed with a diameter larger than the outer diameter of these types of capacitors. Since both end sides 35a and 35b of the plate member 35 are inclined and attached to the mounting hole 37 as described above, the peripheral portion of the insertion hole 39 extends in the vertical direction at the front and rear of all capacitors. Can be clamped and fixed.

  As described above, according to the present embodiment, when the capacitor 21 is mounted on the printed circuit board 27, unlike the fixing device disclosed in Patent Document 1, it is not necessary to solder the plate material 35 to the printed circuit board 27. If the plate member 35 is attached to the printed circuit board 27 by elastically locking the engagement claw 33 and the engagement hole 37, the capacitor 21 can be easily fixed to the printed circuit board 27 via the plate member 35. Thus, workability is remarkably improved as compared with the conventional example.

  Further, in the conventional example of Patent Document 1, it is necessary to prepare a plurality of types of metal pieces for each capacitor having different diameters. However, according to the present embodiment, a single plate material 35 can be used for a plurality of types of capacitors having different diameters. Has the advantage of being able to accommodate.

  In the present embodiment, the outer periphery of the front and rear of the capacitor is sandwiched by the peripheral portions of the two insertion holes 39 from above and below, so that the capacitor can be firmly fixed.

  In the present embodiment, the plate material 35 is formed of a mylar sheet, but is not limited to the mylar sheet, and any thin plate material having elasticity and insulation can be used.

  FIGS. 4 to 6 show a capacitor fixing device according to one embodiment of claims 1, 3, and 4. As shown in FIGS. 4 and 5, this embodiment replaces the plate material 35. A plate member 43 in which two locking holes 37 are arranged in parallel at a predetermined interval on one end side 43a and one insertion hole 39 is formed on the other end side 43b is used. The plate member 43 is the plate member 35. Are formed to the same dimensions using the same material.

  Then, as shown in FIG. 4, the portion between the locking holes 37 is bent in a U-shaped cross section, and the body portion 25 of the capacitor 21 is inserted into the insertion hole 39, and then the U-shaped bent plate member 43 is attached. When the both ends 43a and 43b are expanded outwardly by inserting into the holes 31 and the locking claws 33 and the locking holes 37 are elastically locked, as shown in FIG. 43b is inclined and attached to the mounting hole 37, and the peripheral portion of the insertion hole 39 provided on the one end side 43b sandwiches and fixes the front / rear outer periphery of the capacitor 21 (main body portion 25) from above and below.

  Since the fixing device 45 according to the present embodiment is configured as described above, in order to lay the capacitor 21 on the printed circuit board 27, the section between the locking holes 37 of the plate member 43 is U-shaped as shown in FIG. The main body portion 25 of the capacitor 21 is inserted into the insertion hole 39. Then, while the lead 23 of the capacitor 21 is inserted into the through hole 29, the U-shaped plate member 43 is inserted into the mounting hole 31, and both end sides 43a and 43b are expanded outwardly to be locked. If the nail | claw 33 and the latching hole 37 are latched elastically, as shown in FIG. 6, the both end sides 43a and 43b of the board | plate material 43 will incline and attach to the attachment hole 37, and the insertion hole 39 provided in the one end side 43b of FIG. The peripheral portion sandwiches and fixes the front and rear outer circumferences of the capacitor 21 from the vertical direction. Finally, the leads 23 may be soldered from the back side of the printed circuit board 27.

  Moreover, since both end sides 43a and 43b of the plate member 43 are inclined and attached to the mounting hole 31 as described above, the peripheral portion of the insertion hole 39 can sandwich and fix the front and rear outer peripheries of all capacitors from the vertical direction.

  As described above, according to the present embodiment, when the capacitor 21 is mounted on the printed circuit board 27, unlike the fixing device disclosed in Patent Document 1, it is not necessary to solder the plate material 43 to the printed circuit board 27. If the plate member 43 is attached to the printed circuit board 27 by elastically locking the engagement claw 33 and the engagement hole 37, the capacitor 21 can be easily fixed to the printed circuit board 27 via the plate material 43. As compared with the conventional example, the workability is remarkably improved.

  In addition, according to the present embodiment, a single plate material 43 can cope with a plurality of types of capacitors having different diameters, and only one insertion hole 39 through which the capacitor 21 is inserted can be used as compared with the plate material 43. Has the advantage of being simple.

  FIGS. 7 to 9 show a capacitor fixing device according to an embodiment of claims 5 and 6. In FIG. 7, reference numeral 47 denotes a rectangular mounting formed on the printed circuit board 27 in the vicinity of the through hole 29. A pair of opposing rectangular locking claws 49 project inwardly at the center of two peripheral portions 47a and 47b located in the direction perpendicular to the two through holes 29.

  On the other hand, in the drawing, reference numeral 51 denotes a plate material that attaches to the mounting hole 47. Like the plate material 35, the plate material 51 is formed of a Mylar sheet in a strip shape. As shown in FIGS. 7 and 8, locking holes 53 that can be locked to the locking claws 49 are formed along the both end sides 51a and 51b in the upper and lower end sides 51a and 51b of the plate material 51. Further, an expansion / contraction portion 55 is formed in the vicinity of each locking hole 53 along the locking holes 53 (both ends 51 a and 51 b).

  Then, as shown in FIG. 7, when the center between the locking holes 53 of the plate material 51 is bent and the capacitor 21 is held inside, the locking claws 33 and the locking holes 37 are elastically locked. As shown in FIG. 9, the plate material 51 is attached to the mounting hole 47 in an inverted U-shaped cross section, and the capacitor 21 is held and fixed inside.

  Further, the plate member 51 is provided with a heat radiation rectangular cutout 57 at a portion that contacts the outer periphery of the main body portion 25 of the capacitor 21, that is, at the center between the locking holes 53. Is planned. The expansion / contraction part 55 can be adapted to a plurality of types of capacitors having different main body diameters according to the specifications, and can expand / contract according to the capacitor diameter to contribute to gripping and fixing of the capacitor 21 by the plate material 51. ing.

  Since the fixing device 59 according to the present embodiment is configured as described above, in order to lay the capacitor 21 on the printed circuit board 27, the center between the locking holes 53 of the plate member 51 is folded as shown in FIG. The capacitor 21 is held inside. Then, while the lead 23 of the capacitor 21 is inserted into the through hole 29, both end sides 51 a and 51 b of the bent plate material 51 are inserted into the mounting hole 47 to elastically engage the locking claw 49 and the locking hole 53. If it stops, as shown in FIG. 9, the board | plate material 51 will attach to the attachment hole 47 by cross-sectional inverted U shape, and will hold | grip and fix the capacitor | condenser 21 inside. Thereafter, the leads 23 may be soldered from the back side of the printed circuit board 27.

  As described above, the expansion / contraction part 55 can handle a plurality of types of capacitors having different diameters. Therefore, the expansion / contraction part 55 expands / contracts according to the diameter of the capacitor 21 and contributes to gripping and fixing of the capacitor 21 by the plate material 51.

  Further, a heat dissipation measure for the capacitor 21 is taken through the notch 57.

  As described above, according to this embodiment, when the capacitor 21 is mounted on the printed circuit board 27, unlike the fixing device disclosed in Patent Document 1, it is not necessary to solder the plate material 51 to the printed circuit board 27. If the plate material 51 is attached to the printed circuit board 27 by elastically locking the engagement claw 49 and the engagement hole 53, the capacitor 21 can be easily fixed to the printed circuit board 27 via the plate material 51. Workability was significantly improved compared to the conventional example.

  Also, according to the present embodiment, a single plate material 51 can handle a plurality of types of capacitors having different diameters, and the heat radiation cutout 57 is provided in the plate material 51 that holds the outer periphery of the capacitor 21. Good heat dissipation can be achieved.

  10 and 11 show a fixing device according to an embodiment of the present invention. In the figure, 61 is a rectangular mounting hole formed in the printed circuit board 27 in the vicinity of the through hole 29, 63 is rubber or the like The elastic body 63 is formed in a cylindrical shape using an elastic material, and the elastic body 63 has a larger diameter than the lateral dimension p of the mounting hole 61. The vertical dimension q of the mounting hole 61 is slightly longer than the diameter of the elastic body 63. A pair of opposing elongated rectangular front-viewing engagement holes 65 are formed in the circumferential direction on the lower peripheral wall of the elastic body 63, and the vertical width r of each engagement hole 65 is respectively equal to the printed board 27. The same thickness as the plate thickness.

  Then, when the portions of the both engagement holes 65 of the elastic body 63 are pressed inward to squeeze the lower part of the elastic body 63, the lower part of the elastic body 63 can be inserted into the mounting hole 61. When the pressing to 63 is released, the elastic body 63 returns to its original shape by its own restoring force, and at this time, the peripheral portions 61a and 61b of the mounting hole 61 are engaged with the both engaging holes 65, respectively. 11, the elastic body 63 is fixed to the mounting hole 61 and is erected on the printed circuit board 27.

  Also, as shown in FIG. 10, a pair of circular insertion holes 67 are provided in a direction substantially orthogonal to the pair of opposing engagement holes 65 on the substantially central portion of the elastic body 63 or on the peripheral wall slightly above the center. Both insertion holes 67 are set to be slightly smaller in diameter than the outer diameter of the main body portion 25 of the capacitor 21. Then, the main body portion 25 is press-fitted between both the insertion holes 67, so that the main body portion 25 of the capacitor 21 is laid down horizontally with the printed circuit board 27 via the elastic body 63 as shown in FIG. It can be done.

  The insertion hole 67 is formed to have a smaller diameter than the outer diameters of a plurality of types of capacitors according to the specifications including the capacitor 21, but the elastic body 63 is formed of an elastic material such as rubber and is freely deformable. Therefore, the main body portion of all the capacitors can be press-fitted into the insertion hole 67.

  Since the fixing device 69 according to the present embodiment is configured as described above, in order to lay the capacitor 21 on the printed circuit board 27, the body portion 25 is press-fitted between the insertion holes 67, and then the leads 23 of the capacitor 21. Is inserted into the through-hole 29, the portions of the engagement holes 65 of the elastic body 63 are pressed inward to dent the lower portion of the elastic body 63, and the lower portion of the elastic body 63 is inserted into the mounting hole 61. .

  Thereafter, if the pressure on the elastic body 63 is released, the elastic body 63 returns to its original shape by its own restoring force. At this time, the peripheral portions 61 a and 61 b of the mounting hole 61 are respectively connected to the engagement hole 65. As shown in FIG. 11, the elastic body 63 is fixed to the mounting hole 61 and is erected on the printed board 27, and the main body portion 25 of the capacitor 21 is placed horizontally with the printed board 27 through the elastic body 63. Implemented to lie down. Then, the leads 23 may be soldered from the back side of the printed circuit board 27.

  The insertion hole 67 is formed to have a smaller diameter than the outer diameters of a plurality of types of capacitors according to the specifications including the capacitor 21, but the elastic body 63 is formed of an elastic material such as rubber and can be freely deformed. Therefore, the main body portions of all capacitors can be press-fitted into the insertion holes 67.

  As described above, according to the present embodiment, when the capacitor 21 is mounted on the printed circuit board 27, unlike the fixing device disclosed in Patent Document 1, the lower portion of the elastic body 63 is squeezed and inserted into the mounting hole 61. Thereafter, just by releasing the pressure on the elastic body 63, the peripheral portions 61a and 61b of the mounting hole 61 are engaged with the engagement hole 65 by the restoring force of the elastic body 63, respectively, and the elastic body as shown in FIG. 63 is attached to the mounting hole 61, and the capacitor 21 can be easily fixed to the printed circuit board 27 via the elastic body 63, so that the workability is remarkably improved as compared with the conventional example of Patent Document 1. .

  Further, in the conventional example of Patent Document 1, it is necessary to prepare a plurality of types of metal pieces for each capacitor having different diameters. However, according to the present embodiment, a plurality of types of capacitors having different diameters by one elastic body 63. It has the advantage that it can respond to.

  In the present embodiment, since the body portion 25 of the capacitor 21 is sandwiched using the elastic force of the elastic body 63, the capacitor can be firmly fixed.

It is a disassembled perspective view of the fixing device of the capacitor | condenser which concerns on one Embodiment of Claim 1, Claim 2 and Claim 4. It is a top view of a board | plate material. It is a side view of the fixing device of a capacitor. It is a disassembled perspective view of the fixing device of the capacitor | condenser which concerns on one Embodiment of Claim 1, Claim 3 and Claim 4. It is a top view of a board | plate material. It is a side view of the fixing device of a capacitor. It is a disassembled perspective view of the fixing device of the capacitor | condenser which concerns on one Embodiment of Claim 5 and Claim 6. It is a top view of a board | plate material. It is a side view of the fixing device of a capacitor. It is a disassembled perspective view of the fixing device which concerns on one Embodiment of Claim 7. It is a side view of the fixing device of a capacitor. It is explanatory drawing of the fixing method of the conventional capacitor | condenser using an adhesive agent. It is a side view of the other conventional fixing device of a capacitor. It is a front view of the fixing device of FIG.

Explanation of symbols

21 Capacitor 23 Lead 25 Body portion 27 Printed circuit board 29 Through hole 31, 47, 61 Mounting hole 33, 49 Locking claws 35, 43, 51 Plate material 37, 53 Locking hole 39, 67 Insertion hole 41, 45, 59, 69 Fixing device 55 Extendable portion 57 Notch 63 Elastic body 65 Engagement hole

Claims (7)

An opening formed in the printed circuit board, and a pair of opposing locking claws formed on the peripheral edge; and
From a circular insertion hole through which an electrolytic capacitor having a reduced lead height by bending a lead is inserted, and an elastic strip-shaped plate material in which a locking hole to be locked to each locking claw is formed Become
The plate member is elastically locked by the locking claw and the locking hole and attached to the mounting hole with both end sides inclined, and the peripheral portion of the insertion hole sandwiches the outer periphery of the electrolytic capacitor from above and below, Electrolytic capacitor fixing device characterized by fixing.   2. The electrolytic capacitor fixing device according to claim 1, wherein the plate material is formed with the locking holes at both ends, and the two insertion holes are formed inside the locking holes.   2. The electrolytic capacitor fixing device according to claim 1, wherein the plate member is provided with two locking holes on one end side and one insertion hole on the other end side.   4. The electrolytic capacitor fixing according to claim 1, wherein the insertion hole is formed to have a diameter larger than an outer diameter of a plurality of types of electrolytic capacitors according to specifications. 5. apparatus. An opening formed in the printed circuit board, and a pair of opposing locking claws formed on the peripheral edge; and
A locking hole for locking each locking claw, and a stretchable strip-like plate material formed in the vicinity of each locking hole along the locking hole,
The plate material is an electrolytic capacitor characterized in that the locking claw and the locking hole are elastically locked and attached to the mounting hole in an inverted U-shaped cross section, and the electrolytic capacitor is held and fixed inside. Fixing device.   6. The electrolytic capacitor fixing device according to claim 5, wherein the plate member is provided with a heat-dissipation notch at a portion that contacts the outer periphery of the electrolytic capacitor. A rectangular mounting hole provided on the printed circuit board;
A cylinder in which a pair of opposing circular insertion holes through which electrolytic capacitors having bent parts are lowered by bending leads are inserted and a pair of opposing engagement holes in which the peripheral edge of the mounting hole engages are formed in the peripheral wall An elastic body,
The elastic body is formed with a diameter larger than the width of the mounting hole, and the elastic body is fixed to the mounting hole by engaging a peripheral portion of the mounting hole with the engagement hole. Fixing device.

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