JP2020004790A - Electronic component holder, mounting method thereof, and holding mechanism - Google Patents

Abstract

To easily fix an electronic component to a circuit board with a simple configuration.SOLUTION: A holding mechanism 1 includes an annular holder 20 and a pair of holding portions 31 for holding the holder 20. The holder 20 includes an inner peripheral surface having the same curvature as the curvature of the outer peripheral surface of an electronic component, and includes a peripheral member that elastically urges the outer periphery of the electronic component, and includes a tapered concave portion 21a inclined with respect to the axial direction of the electronic component on the edge of the peripheral member. In addition, the holder 20 includes a convex portion having the pair of opposed tapered concave portions 21b formed in the same direction as the concave portion 21a. Each of the holding portions 31 includes a tapered first edge 31a that engages with the concave portion 21a of the holder 20, and a tapered second edge 31b that engages with the concave portion 21b.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a holder to be mounted on a columnar electronic component by a jig, a mounting method thereof, and a holding mechanism.

  The electronic component has an external connection terminal made of metal for connection to a fixed substrate. The external connection terminals, when mounted and soldered on the fixed substrate, simultaneously fix the electronic component body to the fixed substrate. However, lead-type electrolytic capacitors, which are electronic components, are connected to the board at the lead, so they fall off or peel off due to the impact load, compared to the surface-mount type in which the electronic component body is fixed to the seat plate. May occur.

  Therefore, in order to solve the problem, a structure in which a capacitor is fixed by a holder has been proposed and implemented. For example, by inserting a capacitor between four fitting claws arranged at equal intervals on an annular pedestal, the fitting claw is fitted to a caulking portion formed on an outer case of the capacitor, and Is fixed to a substrate (see Patent Document 1).

  In another mode, a capacitor is penetrated through a fixed member (chassis) having a through hole formed therein and a fixed cover, and a fixing piece of the fixed cover is inserted into a plurality of fixing holes formed in the chassis and rotated. An annular body made of an elastic body previously confined in a tapered space formed between the fixed cover and the chassis is tightened. That is, the capacitor is fixed to the member to be fixed using the frictional force generated by the return force of the annular body confined in the space in a compressed state (see Patent Document 2).

JP-A-11-283869 JP-A-06-89832

  However, when the pedestal described in Patent Document 1 is mounted on the capacitor, the plurality of engaging claws are simultaneously and substantially evenly outwardly expanded against the biasing force of the engaging claws biasing toward the center of the capacitor. I have to do it. That is, if an excessive external force is applied to one engagement claw, the engagement claw may be damaged, and the engagement claw cannot be easily and smoothly fitted to the caulked portion of the outer case. Further, the pedestal disclosed in Patent Document 1 needs to maintain uniform accuracy in the height direction of the engagement claws. In the configuration described in Patent Literature 2, in order to compress the annular body, it is necessary to form a through hole in the member to be fixed, and to deform the fixing member of the fixing cover by inserting the fixing piece of the fixing cover into the through hole. Therefore, in the case of the configuration of both Patent Documents, the configuration of the pedestal and the fixing cover as the holder is complicated, and the inconvenience of mounting the holder to the capacitor becomes complicated.

  The present invention has been made in view of the above problems, and has as its object to provide an electronic component holder that can be easily mounted on an electronic component with a simple configuration, a mounting method thereof, and a holding mechanism.

  The present invention provides the following electronic component holder.

That is, a holding tool comprising an annular peripheral member that partially holds an outer periphery of the cylindrical electronic component over an entire circumference thereof or a part of an outer periphery of the electronic component,
The inner periphery of the peripheral member is formed concentrically with the outer periphery of the electronic component, and the inner periphery of the peripheral member is formed to have a smaller diameter than the outer periphery of the electronic component. When an external force is applied in the axial direction, the inner circumference of the peripheral member is expanded to a larger diameter than the outer circumference of the electronic component, and the inner circumference of the peripheral member is elastically moved with respect to the outer circumference of the electronic component. Characterized in that it is configured to bias the

  According to this configuration, by applying an external force in the axial direction to both end portions of the peripheral member, the peripheral member having a smaller diameter than the outer diameter of the electronic component expands larger than the outer diameter of the electronic component. When the external force is removed from the peripheral member, the urging force acts on the outer periphery of the electronic component from the peripheral member by the return force. At this time, the internal stress acting in the radial direction of the peripheral member that is in the process of returning is turned to the pressing toward the center of the diameter of the columnar electronic component, and the electronic component is held by the pressing of the holder.

  As described above, the holder is easily mounted on the electronic component by mounting the holder having a simple configuration including an arc-shaped or annular peripheral member for partially holding the outer periphery of the electronic component on the electronic component. Can be attached to

  In the above configuration, it is preferable that at least one of the edge portions at both ends in the axial direction of the peripheral member is formed with a concave portion that engages with a jig for applying the external force.

  According to this configuration, by applying an external force while sandwiching both sides of the edge of the holder in a state where the jig is engaged with the concave portion, a radial external force against the urging force of the peripheral member acts on the holder. I do. As a result, the holder is expanded in the radial direction while being elastically deformed. Therefore, the above configuration can be suitably realized.

  Furthermore, it is preferable that an inclined surface is formed in the concave portion so as to be inclined away from the inner peripheral surface of the peripheral member toward the outside in the axial direction.

  According to this configuration, as the jig bites into the recess, the holder is easily expanded radially while being elastically deformed.

  The present invention also provides the following mounting method of the holder.

A mounting method of a holder comprising an annular peripheral member that partially retains a part of the outer periphery of the electronic component or an annular shape that retains the outer periphery of the columnar electronic component over the entire periphery,
Preparation for mounting on the electronic component the holder having the inner periphery of the peripheral member formed concentrically with the outer periphery of the electronic component and the inner periphery of the peripheral member having a smaller diameter than the outer periphery of the electronic component. A first step of
A second step of expanding the inner periphery of the peripheral member to a diameter larger than the outer periphery of the electronic component by applying an external force in the axial direction to end portions at both ends in the axial direction of the peripheral member;
A third step of disposing the electronic component on the inner periphery of the peripheral member during the second step;
Excluding the application of the external force, a fourth step of holding the electronic component by the holder by elastically urging the inner periphery of the peripheral member against the outer periphery of the electronic component,
It is characterized by having.

  According to this method, since the peripheral member is radially expanded to have a diameter larger than the outer diameter of the electronic component, it is easy to arrange the electronic component inside the peripheral member. Thereafter, by removing the external force to the peripheral member, the peripheral member returns to the steady state, so that an urging force acts on the outer periphery of the electronic component, and the electronic component can be held by the holder. Therefore, the holder can be easily attached to the electronic component.

  The present invention also provides the following electronic component holding mechanism.

That is, an electronic component holding mechanism including a holding tool for holding a cylindrical electronic component and a jig for mounting the holding tool on the electronic component,
The holder has a peripheral member whose inner peripheral surface has the same curvature as the curvature of the outer peripheral surface of the electronic component, and elastically urges the outer periphery of the electronic component,
A tapered first concave portion is formed at an edge of the peripheral member, the first concave portion being inclined with respect to an axial direction of the electronic component.
A first holding portion having a tapered first edge engageable with the first recess;
And a second holding portion for holding the holding tool in the axial direction in cooperation with the first holding portion.

  According to this configuration, in a state where the first edge of the first holding portion is engaged with the first concave portion of the holding tool, the holding tool is sandwiched in cooperation with the second holding portion, so that the urging force of the holding tool is provided. External force acts on the holder. As a result, the holder is expanded in the radial direction while being elastically deformed. In this state, after the first holding portion, the second holding portion, and the holder are inserted into the electronic component, the holding device is released from the holding device by the first holding portion and the second holding portion.

  At this time, the urging force acts on the outer periphery of the electronic component from the peripheral member due to the return force of the holder. When the holder comes into contact with the outer periphery of the electronic component, the internal stress in the radial direction of the holder that is in the process of returning turns to a pressure toward the center of the diameter of the columnar electronic component. Will be retained.

  As described above, the holder can be easily attached to the electronic component only by the operation of holding and releasing the holding by the first holding portion and the second holding portion, and thus the holding device can be easily attached to the electronic component. Can be fixed to

In the above configuration, the holding portion may include a tapered second concave portion inclined with respect to the axial direction at an end portion of the peripheral member opposite to the end portion of the peripheral member where the first concave portion is formed. Formed,
The second holding portion preferably has a tapered second edge engageable with the second recess.

  According to this configuration, the first edge of the first holding portion is engaged with the first recess, and the second edge of the second holding portion is engaged with the second recess. That is, since the holder is sandwiched between the pair of holding portions having the tapered edges, the holder is uniformly expanded in the radial direction. Therefore, it becomes easy to insert the electronic component into the opening of the holder.

Further, in the above configuration, the peripheral member has a protruding portion that protrudes radially outward in a radially outer side of an edge portion where the first concave portion and the second concave portion are formed, and both sides of the convex portion. A pair of tapered third concave portions formed in the same direction as the first concave portion and the second concave portion with the convex portion interposed therebetween;
The first holding portion and the second holding portion each have a tapered third edge engageable with the third recess,
It is preferable that the third edge engages with the third recess when the first edge and the second edge engage with the first recess and the second recess, respectively.

  According to this configuration, the external force from the first holding portion and the second holding portion acts more on the both edge portions on the first recess side and the second recess side where both holding portions come into contact with each other than on the center of the holder. . Therefore, the radial expansion of the central portion of the holder is smaller than that of the two concave portions. However, by engaging the third edge with the third concave portion provided in the central portion of the holder, an external force can be directly applied to the central portion of the holder, so that the entire holder can be substantially evenly distributed. Can be extended.

In the above configuration, the jig includes a support shaft that slides the first holding portion and the second holding portion in the axial direction of the electronic component,
It is preferable that at least one of the first holding portion and the second holding portion is a pair of arc-shaped peripheral members that open and close by pivoting around the support shaft.

  According to this configuration, since the first holding portion and the second holding portion are coaxially slidably supported, the alignment for inserting the electronic component into both the holding portions and the holder is facilitated. In addition, since the first holding portion and the second holding portion engage each edge with each concave portion of the holder, the inner diameter of the holder is set smaller than the outer diameter of the holder. Therefore, when attaching the annular holder to the electronic component, the holding portion on the fixed substrate side is prevented from being removed from the holder by the electronic component and the fixed substrate. However, as in the present embodiment, by forming the holding portion on the fixed substrate side with a pair of openable and closable arc members, the holding portion is attached to the electronic component, and then the holding portion is easily removed from the electronic component. Can be.

  Further, in the above configuration, at least one of the first holding portion and the second holding portion may be configured by an arc-shaped peripheral member that can be divided into a plurality of pieces.

  According to this configuration, similarly to the above configuration, after the holder is attached to the electronic component, the holding portion on the fixed substrate side is divided, so that the holding portion can be easily removed from the electronic component.

  According to the present invention, it is possible to provide an electronic component holder that can be easily mounted on an electronic component with a simple configuration, a mounting method thereof, and a holding mechanism.

It is the perspective view which showed the support tool in this invention, and the partial cross section of the jig. It is a perspective view which shows the attachment operation | movement of a holding tool. It is a figure which shows the attachment operation | movement of a holding tool. It is a figure which shows the attachment operation | movement of a holding tool. It is a figure which shows the attachment operation | movement of a holding tool. It is a figure showing operation which inserts a fixture in a holder. FIG. 4 is a view showing a state where an electrolytic capacitor to which a holder is mounted is mounted on a fixed substrate. It is a perspective view showing a holding mechanism of a modification. It is a perspective view which shows the holder of a modification. It is a perspective view which shows the holder of a modification. It is a figure explaining the mounting operation | movement of a holder using the AA arrow sectional drawing of FIG. It is a perspective view which shows the holder of the modification of FIG. FIG. 13 is a perspective view showing a state where an electrolytic capacitor is mounted on the holder of FIG. 12.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the present embodiment, a holding mechanism including a holder for holding an electrolytic capacitor as a columnar electronic component and a jig for mounting the holder on the electrolytic capacitor will be described as an example.

  The holding mechanism 1 includes a holding tool 20 and a jig 30 as shown in FIG. The holder 20 is an annular peripheral member made of a non-conductive elastic body. The inner diameter of the holder 20 is set smaller than the outer diameter of the electrolytic capacitor. That is, when the holder 20 is mounted on the electrolytic capacitor, the holder 20 comes into contact with the outer periphery of the electrolytic capacitor and urges toward the center in the radial direction.

  The holder 20 has tapered recesses 21a at the upper edge and the lower edge. The two concave portions 21a have the same taper shape, and are formed at both edge portions so that the tapered deep ends face each other. That is, the concave portion 21a is formed along the axial direction of the electrolytic capacitor. In the present embodiment, the concave portion 21a is formed in an annular shape connected along each edge. Here, the term “tapered” means a slope that is away from the inner peripheral surface of the holder toward the outside in the axial direction, and is a slope of the pointed head shown in the cross section of FIG.

  Further, in the holder 20, three through holes 24 penetrating from the concave portion 21a of the upper edge portion toward the concave portion 21a of the lower edge portion are formed at predetermined intervals (equal intervals in the present embodiment). . After attaching the holder 20 to the electrolytic capacitor 50 (see FIG. 3), the fixture 70 for fixing the electrolytic capacitor 50 to the fixed substrate 40 (see FIG. 7) is inserted into the through hole 24. Therefore, the width of the through hole 24 is set to be slightly larger than the maximum width of the portion of the fixture 70 inserted into the through hole 24.

  As shown in FIG. 6, the fixture 70 has a substantially “T” shape of an alphabet, and is configured so that a top portion extending in the horizontal direction is engaged along the concave portion 21 a of the upper edge portion. Therefore, the fixture 70 is curved around the axis at the same curvature as the curvature of the holder 20. When the electrolytic capacitor 50 is mounted on the fixed substrate 40, the distal end of the fixture 70 protruding from the concave portion 21 a of the lower edge portion has a length protruding a predetermined length through a through hole formed in the fixed substrate 40. Is set. That is, the distal end of the fixture 70 is soldered to the fixed substrate 40. In the present embodiment, the three fixing members 70 are provided at equal intervals in the concave portion 21a. However, the number of the fixing members 70 is not limited to three and may be any number that can be stably and securely fixed to the fixed substrate 40. Good.

  Further, the holder 20 has an annular convex portion 22 protruding radially outward at the center of the outer periphery. The upper edge portion and the lower edge portion of the convex portion 22 have a tapered concave portion 21b which is cut out in the same direction as the concave portion 21a and formed to face the concave portion 21a. The two concave portions 21 b have the same tapered shape with a pointed cross section, and have an annular shape connected along the edge of the convex portion 22.

  The positions of the protrusion 22 and the recess 21b are set as follows. When each of the first edges 31a of the pair of holding portions 31 constituting the jig 30 described later engages with both the concave portions 21a of the upper edge portion and the lower edge portion, the first edge 31a of the both holding portions 31 The two edges 31b are set so as to engage with both concave portions 21b formed in the convex portion 22. In other words, when the holder 20 is sandwiched between the pair of holding portions 31, the same pressing force is applied to each of the recesses 21a and 21b, so that the rear end of each of the recesses 21b is moved from the upper edge portion and the lower edge portion. The distance to is set.

  In the present embodiment, the holder 20 itself corresponds to a peripheral member functioning as a holder of the present invention, and a concave portion 21a formed at one end of the holder (peripheral member) 20 is a fourth embodiment of the present invention. The concave portion 21a formed in one concave portion and the other edge portion corresponds to the second concave portion of the present invention. Further, the convex portion 22 corresponds to the convex portion of the present invention, and the concave portion 21b corresponds to the third concave portion of the present invention.

  The jig 30 is constituted by a pair of upper and lower holding portions 31. In the present embodiment, both holding portions 31 are annular in the same size. Note that one holding portion 31 corresponds to a first holding portion of the present invention, and the other holding portion 31 corresponds to a second holding portion of the present invention.

  The holding portion 31 is formed of a metal or resin (for example, fluororesin) harder than the holder 20. The thickness of the holding portion 31 is substantially the same as the thickness of the holder 20, and the edge that is not engaged with the holder 20 is flattened. That is, the edge is easily pressed.

  As shown in the cross section shown in FIG. 1, the sandwiching portion 31 has two edge portions having different lengths formed by cutting out from one edge portion to the other edge portion. That is, the inner diameters of the both end portions are different. The inner diameter of the inner edge is set slightly larger than the inner diameter of the holder 20. Further, a tapered first edge 31a is formed at the inner edge portion by cutting out the thick portion of the holding portion in a V-shape.

  The inner diameter of the outer edge is larger than the outer diameter of the holder 20 (excluding the protrusion 22). The outer edge is the edge of the peripheral side wall, and has a tapered second edge 31b formed at the tip. The vertical cross section of the first edge 31a and the second edge 31b is a pointed shape, and is set so that the vertical surface and the inclined surface are in close contact with the concave portions 21a and 21b.

  Therefore, the inner peripheral surface of the inner edge is set to be close to the outer peripheral surface of the electrolytic capacitor. The inner peripheral surface of the peripheral side wall including the outer edge is set to be in contact with the outer peripheral surface of the holder 20. Further, the rear end of the notch for dividing the edge is set so as to contact the outer edge of the holder 20.

  Next, a process of attaching the holder 20 to the electrolytic capacitor by the holding mechanism and fixing the electrolytic capacitor to the fixed substrate will be described with reference to FIGS.

  First, the center of the pair of upper and lower holding portions 31 and the holder 20 is aligned with the axis P shown in FIG. After the centering is completed, as shown in FIG. 3, the holder 20 is held by the holding portion 31. At this time, as shown in FIG. 4, the first edges 31 a of both the holding portions 31 engage with the concave portions 21 a formed on the upper edge portion and the lower edge portion of the holder 20, and The second edge 31b of the holding portion 31 engages with the concave portion 21b formed in the convex portion 22 of the holder 20.

  In this state, the flat edge portions of both holding portions 31 are gripped and pressed from above and below the holder 20. At this time, a component force is generated in both directions inside and outside of the holder 20 due to the contact with the edges 31a and 31b. The holding portion 31 has a higher hardness than the holder 20 and thus resists pressing. However, the holder 20 having high elasticity is elastically deformed while sliding on the slopes of the edges 31a and 31b, and is outwardly (radially). Moving. That is, since this phenomenon occurs uniformly three-dimensionally over the entire circumference of the holder 20, the holder 20 is expanded radially outward.

  In a state where the inner diameter of the holder 20 is expanded to a predetermined size exceeding the outer diameter of the electrolytic capacitor 50 by the two holding portions 31, the two holding portions 31 and the holding member 20 are attached to the electrolytic capacitor 50 as shown in FIGS. 3 and 4. Through. When the holder 20 reaches a predetermined position, for example, a position which is half or less in the height direction of the electrolytic capacitor 50, the holding of the holder 20 by the holding portions 31 is released as shown in FIG. At this time, a restoring force (reduction) is generated in the holder 20 smaller than the outer diameter of the body of the electrolytic capacitor 50 in a stationary state, and the restoring force acts on the outer periphery of the electrolytic capacitor 50. That is, the holder 20 urges the outer periphery of the electrolytic capacitor 50 toward the center in the radial direction.

  At this time, the internal stress in the radial direction of the holder 20 that is in the process of returning is turned to the pressing toward the center of the diameter of the cylindrical electrolytic capacitor 50, and the pressing of the holder 20 holds the electrolytic capacitor 50.

  When the attachment of the holder 20 to the electrolytic capacitor 50 is completed, the fixture 70 is attached to the holder 20. That is, as shown in FIG. 6, the fixture 70 is inserted into the through hole 24 from the concave portion 21a on the upper side of the holder 20, and the top portion engages with the concave portion 21a. In this state, the fixture 70 is fixed to the holder 20.

  The electrolytic capacitor 50 on which the mounting with the fixture 20 is completed is mounted on the fixed substrate 40 as shown in FIG. That is, each of the external electrode 51 of the electrolytic capacitor 50 and the tip portion of the fixture 70 is inserted into the through hole formed in the fixed substrate 40, and the protruding portions are connected and fixed by soldering. Thus, one round of the process of attaching the holder 20 to the electrolytic capacitor 50 and mounting the electrolytic capacitor 50 on the fixed substrate 40 is completed.

  According to the above configuration, when the holding portions 31 are released from the holder 20, the holder 20 grips the electrolytic capacitor 50, so that the electrolytic capacitor 50 holds the holder 20 due to a load due to an impact, a load due to vibration, or the like. The force does not decrease, and the holder 20 does not come off from the electronic component. Therefore, the holder 20 can be mounted on the electronic component with a simple and simple configuration. As a result, it is possible to easily prevent the electrolytic capacitor 50 from falling off the fixed substrate 40.

  Further, according to the above configuration, the fixing tool 70 is inserted into the relatively thin holding tool 20 without the fixing tool 70 protruding in the radial direction of the holding tool 20. Therefore, in the above configuration, unlike the conventional metal band, a screw or a screw portion of another holder for fixing to the fixed substrate is not required, so that the occupied area on the fixed substrate can be reduced.

  In addition, expansion, which is an operation for mounting the holder 20, can be realized with a slight displacement (elastic deformation) by an external force from the pair of holding portions 31, and therefore, the holder 20 can be easily and quickly mounted on the electrolytic capacitor 50. be able to. Further, since the release of the extension of the holding tool 20 by the holding portions 31 is linked to a series of mounting operations, it is possible to prevent forgetting to attach / detach the jig 30.

  Further, the internal stress at the time of mounting the holder 20 is uniform because it is generated by the elastic force of the holder itself, so that unnecessary local external force due to other members such as screws does not occur. That is, the allowable stress of the material of the holder 20 can be sufficiently used. Furthermore, when mounting the holder 20, it is necessary to perform an expansion operation that temporarily generates high internal stress, and the expansion operation can automatically inspect all potential strength defects of the holder 20 for all the members. It becomes. In addition, this operation can lower the safety factor of the internal stress against the potential defect of the potential holder 20 as compared with the related art, so that the allowable stress of the material can be more fully utilized.

  Furthermore, since the fixture 70 can be simultaneously fixed to the fixed substrate 40 when the electrolytic capacitor 50 is soldered to the fixed substrate 40 without fixing the holder 20 to the fixed substrate 40 with an adhesive or the like, the number of connection steps can be reduced. The electrolytic capacitor 50 can be easily fixed to the fixed substrate 40 with a simple configuration.

  Note that the present invention is not limited to the configuration of the above embodiment, and the following configuration can be adopted.

  (1) In the above embodiment, the holding portion 31 constituting the jig 30 is separated, but may be configured to be integrally handled.

  For example, as shown in FIG. 8, a convex portion 32 having a through hole is provided on a side surface of each of the sandwiching portions 31 and 31 </ b> C, and the support shaft 33 passes through the convex portion 32. That is, the holding portions 31 and 31C are slidable along the support shaft 33. In addition, a stopper 34 made of an insulator is attached to the tip of the support shaft.

  Further, the holding portion 31C located on the lower side is an arc-shaped peripheral member obtained by dividing an annular member into two. One end of the arc-shaped peripheral member is inserted into the support shaft 33 so as to be pivotable about the support shaft. The free end of the arc-shaped peripheral member is configured to be openable and closable.

  According to this configuration, after releasing the holding by the holding portions 31 and 31C from the holder 20 attached to the electrolytic capacitor 50, the holding portion 31C is pivoted to open the free end side, so that the electrolytic capacitor 50 The holding portion 31C can be easily removed.

  (2) The holding portion 31C of the above embodiment may be configured to be combined by two or more divided arc-shaped peripheral members. Further, the upper holding portion 31 may also be configured to be able to be divided into an arc shape.

  (3) The holder 20 is not limited to the annular shape as in the above-described embodiment, and may have the following form.

  As shown in FIG. 9, the substantially square frame 60 made of an elastic body with a chamfered corner 60a has two inwardly protruding build-up portions 61 inside each of the four sides. The inner wall between the adjacent build-up portions 61 is concavely curved to have the same curvature as that of the electrolytic capacitor 50, thereby forming the holding portion 61a corresponding to the peripheral member. The distance between the opposing holding parts is set to be smaller than the diameter of the electrolytic capacitor 50.

  Each of the four sides of the frame 60 is slightly inclined inward toward the center from both sides of the corner 60a, and each of the four sides is slightly outwardly bulged at the center. This arc-shaped portion constitutes a part of the center of the holding portion 61a.

  The holding portion 61a is formed with concave portions 21a having the same curvature as the first edge 31a of the holding portion 31 at vertically opposed positions. Each holding portion 61a is formed with a through hole 24 penetrating from the center of the concave portion 21a at the upper edge to the center of the concave portion 21a at the lower edge. The fixture 70 is inserted into the through hole 24.

  The inside of the corner portion 60a has a concave curved shape surrounded by the built-up portion 61.

  The convex build-up portion 61 has a through-hole 62 penetrating vertically. The holding portion 61 is configured to be easily deformed elastically by the through hole 62.

  The holding portion 61a formed on the frame 60 is formed by inclining each side of the frame 60 made of an elastic body inward and making the inside of the corner portion 60a concavely curved by the built-up portion 61 having the through hole 62. This creates a bias toward the center. That is, the frame 60 functions as a spring.

  According to this configuration, the concave portions 21 a are divided between the overlaid portions 61 on each side of the frame 60, and each corner 60 a lacking the concave portion 21 a is supplemented by the outer frame 60. That is, as compared with the annular embodiment in which the concave portions 21a are continuous, the entire length of the holder itself is extended by the frame 60, and the frame portion can support the stress by using the spring. Therefore, the allowable deformation amount (moving distance) of the holding portion 61a can be increased.

  (4) The holding portion 61a of the above modification has a configuration in which the arc-shaped concave portion 21a is provided inside each side of the frame 60. For example, the following inside of each corner of the frame having the same shape is provided as follows. A configuration in which a holding portion 61a as a peripheral member is provided in the form may be adopted.

  As shown in FIG. 10, a triangular pedestal 65 is provided inside the corner 60a of the frame 60. On this pedestal 65, an arm 66 of an elastic body extending from the corner 60a toward the center is cantilevered. An arc-shaped holding portion 61a is provided at the tip of the arm 66. The holding portion 61a has a holding surface having the same curvature as the electrolytic capacitor 50. In addition, the holding portion 61a is formed with a concave portion 21a at the upper and lower edges.

  Each arm 66 is curved in the vertical direction (axial direction) as shown in FIG. That is, the arm 66 functions as a spring. Therefore, when the holding portion 61a is held between the pair of upper and lower holding portions 31, the arm 66 is elastically deformed in the radial direction by the attraction force expanding the holding portion 61a in the radial direction, as shown on the left side of FIG. Thereafter, when the holding portion 31 is released from the holding portion 61a, the holding portion 61a provided at the tip of the arm urges the outer periphery of the electrolytic capacitor 50 toward the center in the radial direction by the returning force of the arm 66. The urging force is appropriately changed according to the length, rigidity, and the like of the arm 66.

  As shown in FIG. 12, the holder 20 may be a multi-continuous type in which a plurality (three) of the holders 20 shown in FIG. In the present embodiment, a flange 67 having a through-hole 68 for inserting the fixture 70 is provided at two places of the frame 60 on the short side. The position at which the flange 67 is provided is not limited to the short side of the frame 60, but may be set to a position or height that does not make contact with other mounting components according to the mounting density of the fixed substrate 40 on which the electrolytic capacitor 50 is mounted. The settings are changed as appropriate. Similarly, the number of flanges 67 is appropriately changed.

  When the electrolytic capacitor 50 is mounted on the multi-continuous type holder 20, as shown in FIGS. 1 and 2, the electrolytic capacitor 50 is sequentially placed between one holding portion 61a using a pair of holding portions 31. May be used, or a structure in which three holding parts 31 are integrally formed by connecting them in accordance with the pitch of the holder 20 may be used. In the case of this configuration, as shown in FIG. 13, the holding tool 20 is mounted on the three electrolytic capacitors 50 using the holding tool 31, and after the electrolytic capacitor group is arranged on the fixed substrate 40 in this state, the through holes are formed. A fixture 70 such as a screw is inserted from 68 and fixed to the fixed substrate 40.

  (5) In the above embodiment, the convex portion 22 having the concave portion 21b is provided on the outer peripheral surface of the holder 20, but the configuration may not include the convex portion 22 and the concave portion 22b.

  When the holder 20 does not have the convex portion 22 and the concave portion 21b, the retainer 20 may have a configuration in which the concave portion 21a is formed only on one of the upper and lower edges. In this configuration, the edge of the holder 20 having no concave portion 21a is, for example, flat. The contact surface of the holding portion 31 on the side contacting the flat edge is also made flat similarly. That is, even when the holding tool 20 is held by the holding sections having different shapes, the holding section 20 holding the holding tool 20 on the flat surface resists the pressing of the holding tool 20 by the edge. It is expanded in the radial direction by a first edge 31a provided only at one edge. Therefore, the same operations and effects as those of the above-described embodiment are obtained.

  (6) In the above embodiment, the electrolytic capacitor is described as an example. However, the present invention is not limited to the electrolytic capacitor. It goes without saying that the mechanism can be applied.

1 holding mechanism 20 holding tool (peripheral member)
21a recesses (first recess, second recess)
21b recess (third recess)
22 convex part 30 jig 31 holding part (first holding part, second holding part)
31a 1st edge (1st edge, 2nd edge)
31b 2nd edge (3rd edge)
32 convex

Claims (9)

A holder comprising an annular peripheral member that partially retains a part of an outer periphery of the electronic component, or an annular shape that holds an outer periphery of a columnar electronic component over the entire periphery,
The inner periphery of the peripheral member is formed concentrically with the outer periphery of the electronic component, and the inner periphery of the peripheral member is formed to have a smaller diameter than the outer periphery of the electronic component. When an external force is applied in the axial direction, the inner circumference of the peripheral member is expanded to a larger diameter than the outer circumference of the electronic component, and the inner circumference of the peripheral member is elastically moved with respect to the outer circumference of the electronic component. An electronic component holder configured to urge the electronic component.   2. The electronic component holder according to claim 1, wherein a concave portion for engaging with a jig for applying the external force is formed on at least one of end edges of both ends in the axial direction of the peripheral member. 3.   The holder for an electronic component according to claim 2, wherein the concave portion is formed with an inclined surface that is inclined away from the inner peripheral surface of the peripheral member toward the outside in the axial direction. A mounting method of a holder comprising an annular peripheral member that partially retains a part of the outer periphery of the electronic component or an annular shape that retains the outer periphery of the columnar electronic component over the entire periphery,
Preparation for mounting on the electronic component the holder having the inner periphery of the peripheral member formed concentrically with the outer periphery of the electronic component and the inner periphery of the peripheral member having a smaller diameter than the outer periphery of the electronic component. A first step of
A second step of expanding the inner periphery of the peripheral member to a diameter larger than the outer periphery of the electronic component by applying an external force in the axial direction to end portions at both ends in the axial direction of the peripheral member;
A third step of disposing the electronic component on the inner periphery of the peripheral member during the second step;
Excluding the application of the external force, a fourth step of holding the electronic component by the holder by elastically urging the inner periphery of the peripheral member against the outer periphery of the electronic component,
The mounting method of the holding tool provided with. An electronic component holding mechanism including a holding tool for holding a cylindrical electronic component and a jig for mounting the holding tool on the electronic component,
The holder has a peripheral member whose inner peripheral surface has the same curvature as the curvature of the outer peripheral surface of the electronic component, and elastically urges the outer periphery of the electronic component,
A first concave portion having a tapered shape inclined with respect to an axial direction of the electronic component is formed at an edge of the peripheral member,
A first holding portion having a tapered first edge engageable with the first recess;
An electronic component holding mechanism, comprising: a second holding portion for holding the holding tool in the axial direction in cooperation with the first holding portion. In the holding portion, a tapered second concave portion inclined with respect to the axial direction is formed at an end edge portion of the peripheral member on the opposite side to the axial direction in which the first concave portion is formed,
The electronic component holding mechanism according to claim 5, wherein the second holding portion has a tapered second edge engageable with the second recess. The peripheral member has a protruding portion that protrudes radially outward in a radially outer side of an edge portion where the first concave portion and the second concave portion are formed, and the convex portion is provided on both sides of the convex portion. A pair of tapered third recesses that are inclined in the same direction as the first recess and the second recess are formed.
The first holding portion and the second holding portion each have a tapered third edge engageable with the third recess,
The third edge engages the third recess when the first edge and the second edge respectively engage the first recess and the second recess. An electronic component holding mechanism as described in the above. The jig includes a support shaft that slides the first holding portion and the second holding portion in an axial direction of the electronic component,
At least one of the first holding portion and the second holding portion is a pair of arc-shaped peripheral members which are opened and closed by pivoting around the support shaft. An electronic component holding mechanism according to any one of the above. The at least one of the said 1st holding part and the said 2nd holding part is comprised by the arc-shaped peripheral member which can be divided | segmented into several pieces. The Claim in any one of Claims 5 thru | or 7 characterized by the above-mentioned. Electronic component holding mechanism.