JP2000164465A - Electronic part - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily position a fixing member to an electronic part body. SOLUTION: The electronic part 10 is composed of an electronic part body 50 having a recess 58 for locking on its outer peripheral surface and a fixed member 19 attached to the other peripheral surface of part body 50. The fixing member 19 is composed of first and second members 20 and 30 made of an insulating material. The first member 20 has a protrusion 24 which is put in the recessed section 58 of the part body 50, and projecting pieces 25 which can bend toward the center of the part body 50. The second member 30 has a main body section 31 the inner peripheral surface of which is tapered so that the housing space B of the main body section 31 may gradually become narrower. The fixed member 19 is attached to the part body 50 in such a way that, after the protrusion 24 of the first member 20 is put in the recess 58 of the part body 50 and the member 20 is positioned and temporarily fixed, the second member 30 is attached to the first member 20. When the second member 30 is attached to the first member 20, the tapered section 33 of the member 30 presses the projecting pieces 25 of the member 20 against the part body 50 and, accordingly, the fixed member 19 is fixed to the part body 50.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure of an electronic component in which a fixing member for attaching to a chassis or the like is attached to an electronic component body such as an electrolytic capacitor.

[0002]

2. Description of the Related Art An electronic component such as an electrolytic capacitor has a large weight when it is large, and merely by soldering external terminals of the electronic component to a printed circuit board or the like, it is necessary to support the weight of the electronic component itself. Since a sufficient connection strength cannot be obtained, a metal or resin fixing member is attached to the electronic component body, and the fixing member is fixed to the chassis or board by a screw or the like. Is widely practiced.

The fixing member made of metal is as shown in FIG. 4, and the fixing member 41 attached to the electronic component 40 is formed in an annular shape such that a band-shaped metal plate tightens the electronic component body. And the end 4 of the metal strip
The two are brought into contact with each other, and they are locked by screws 45. Also, the metal band is provided with a foot 43 for attachment as appropriate, and the foot 43 for attachment is bent at a right angle,
It has a structure that comes into contact with the board or chassis to be attached. A screw hole 44 is formed in the mounting foot 43, a screw is inserted into the screw hole, and the screw is fixed to a board or a chassis by screwing.

Among the electronic components using such a fixing member, the electrolytic capacitor has a plurality of electrolytic capacitors mounted on a chassis and is electrically connected in series or in parallel, so that there is an opportunity to be used as a so-called capacitor bank. Many. In some cases, a metal chassis is used as a chassis used for the capacitor bank. By the way, electrolytic capacitors can be up to 600
Although a voltage of about V may be applied and used, the resin outer sleeve that covers the outside of the electrolytic capacitor is not thick enough to have a sufficient withstand voltage against such a high voltage. Electrolytic capacitors are in a state where the cathode foil inside is electrically connected to the metal outer case via the electrolytic solution, but the outer sleeve covering the outer case has sufficient withstand voltage as described above. In some cases, a short circuit may occur between the outer case and the metal fixing member, and conduction may occur through the chassis on which the electrolytic capacitor is mounted.

The above problem is caused by using a metal fixing member. To solve this problem, for example, as described in Japanese Patent Application Laid-Open No. 5-283267. A fixing member having a simple structure has been proposed.

[0006] The fixing member proposed here is a mounting tool in which a first mounting tool and a second mounting tool made of an insulating resin are combined, and the first mounting tool has a U-shaped notch at the top. And is formed in a tapered shape that becomes thinner toward the upper end in the thickness direction. In addition, a collar is provided around a substantially central portion of the first fixture. The second fixture is attached to the first attachment to tighten an upper portion of the first attachment. The second attachment is tapered such that the upper inner wall becomes thinner downward in the thickness direction. The fixing member is integrated with the electronic component such that the first mounting component and the second mounting component having the above-described configuration are combined, and the upper part of the first mounting component fastens the electronic component.

[0007]

In order to use such an electrolytic capacitor as a capacitor bank, it is necessary that the electrolytic capacitor be mounted on a chassis by a fixing member and that the external terminals of the electrolytic capacitor be electrically connected to each other. . Therefore, when the electrolytic capacitor is mounted on the chassis by the fixing member, the position of the electrolytic capacitor is determined. If the mounting position of the fixing member with respect to the electrolytic capacitor body is not aligned, the height of the external terminals of the electrolytic capacitor is increased. Will be uneven. Therefore, it can be said that it is desirable to keep the fixed member at a fixed position with respect to the electronic component body. However, in the electronic component having the above-described configuration, fixing of the electronic component and the fixture is
Although the tip of the first fixture is tightened with the electronic component, the fixing position of the fixture with respect to the electronic component is not particularly problematic. Therefore, in the step of attaching the fixing member to the body of the electrolytic capacitor as described above and integrating the same, the work of combining the second fixture while maintaining the first fixture at a fixed position on the side surface of the electrolytic capacitor. However, the position of the first member often shifts during the operation, and it has been difficult to attach the fixing member to a fixed position of the electrolytic capacitor.

Therefore, according to the present invention, in an electronic component in which a fixing member to be attached to a chassis or the like is attached to an electronic component body such as an electrolytic capacitor, the positioning of the fixing member with respect to the electronic component body can be easily performed, and An object of the present invention is to provide an electronic component that can be easily attached to an electronic component body.

[0009]

Therefore, in the present invention, the following structure is employed as an electronic component. That is, an electronic component body including an electronic component main body having a locking recess formed on an outer peripheral surface thereof and a fixing member attached to the outer peripheral surface of the electronic component main body, wherein the fixing member is formed of an insulating material, A projection that fits into the locking recess of the electronic component body, a first member that has a flexible projection in the center direction of the electronic component, and a storage space that can be mounted outside the first member A second member having a tapered shape in which the width of the storage space becomes gradually narrower on the inner peripheral surface of the main body portion having the main body portion, and the protrusion of the first member is fitted into the locking concave portion of the electronic component. The second member is attached to the outside of the first member positioned together, and the taper formed in the second member presses the projecting piece of the first member against the electronic component body, so that the fixing member is Parts are fixed. In the electronic component having such a configuration, the projection of the first member is fitted into the locking recess formed in the electronic component body, so that the first member and the electronic component body can be easily positioned. Also,
Also in the step of coating the first member with the second member, the first member fits into the locking recess of the electronic component main body so that the first member fits in the electronic component main body. Since it is temporarily fixed at a predetermined position (fitting position) and does not easily move from that position, the work efficiency in the attaching process of the second member is improved. Furthermore, since the position of the fixing member can be arbitrarily changed only by changing the formation position of the locking concave portion of the outer case, it is possible to quickly respond to various needs.

Further, the present invention is characterized in that the first member and the second member are locked by locking means to prevent the first member and the second member from being detached. In this way, the first member and the second member are locked to prevent the first member and the second member from being separated from each other, and the fixing member tightens the electronic component body, and the fixing member The state fixed to the component body can be maintained for a long time.

Further, according to the present invention, the first member and the second member each have a flange portion having a through hole, and each of the first member and the second member comes into contact with each other when the first member and the second member are fitted. The first member and the second member are locked by inserting a locking member into a through hole of the flange portion.
The first member and the second member can be fixed by forming a flange portion on each of the first member and the second member, and inserting a locking member into a through hole formed in the flange portion. By doing so, it is possible to fix the first member and the second member to the chassis or the like simultaneously with the fixing operation.

Further, the present invention is characterized in that the projection of the first member is formed on a projection of the first member. By forming the projection of the first member on the projection of the first member, the projection is formed in a state where the projection of the first member is fitted into the locking recess of the electronic component body. The projecting piece is pushed by the taper of the second member, and the outer periphery of the projecting piece of the first member is covered by the inner surface of the main body of the second member. ) Is restricted, so that there is almost no danger that the projection will come off the locking recess.

[0013]

Embodiments of the present invention will be described. In the embodiments of the present invention, description will be made using an electrolytic capacitor as an electronic component.

FIG. 1 is a view showing an electronic component 10 of the present invention. In this figure, reference numeral 50 denotes an electrolytic capacitor (electronic component) main body. The internal structure will be described with reference to FIG. 5. A capacitor element 51 formed by winding an anode foil and a cathode foil with a separator interposed therebetween is housed in a bottomed cylindrical outer case 52 made of metal such as aluminum. . From the end face of the capacitor element 51, an electrode tab 53 connected to each electrode foil is led out.

At the open end of an outer case 52 made of metal such as aluminum, a sealing plate 54 as a sealing member is housed. The sealing plate 54 is made of an insulating resin and has embedded therein external terminals 55 for electrically connecting the front and back surfaces thereof. In the outer portion of the external terminal 55, the center is threaded. An elastic member 56 made of rubber or the like is attached to a circumferential portion of a surface serving as an outer portion of the sealing plate 54. An electrode tab 53 derived from the capacitor element 51 is connected to a tip of the external terminal 55 of the sealing plate 54 on the inside of the capacitor.

A lateral groove 57 is formed on the side of the outer case 52 in advance.
Are formed, and the capacitor element 51 and the sealing plate 5 are formed.
When the outer case 4 is stored in the outer case 52, the sealing plate 54 is supported and positioned. Then, by curling the open end of the outer case 52, the tip of the outer case 52 bites into the elastic member 56 of the sealing plate 54, thereby obtaining the sealing of the electrolytic capacitor and the sealing plate in the outer case. Prevents rotation and falling off of the outer case.

In addition to the lateral grooves 57 for supporting the sealing plate, locking recesses 58 are formed on the side surfaces of the outer case.
Is formed. This locking recess 58 is formed by the same method as the processing of the lateral groove for supporting the sealing plate, that is, the processing jig for the lateral groove processing, even after the opening end of the electrolytic capacitor is curled and sealed. Is pressed against the side surface of the outer case of the electrolytic capacitor, and the electrolytic capacitor body is rotated to form an arbitrary place. In addition, the lateral groove as a locking recess is
An opening end of the outer case may be sealed afterwards using one formed at the same time as the formation of the lateral groove for supporting the sealing plate.

The electrolytic capacitor body is covered with an insulating outer sleeve 59. The outer sleeve 59 is formed by cutting a tube formed of, for example, a heat-shrinkable resin into a predetermined length, covering the outer side of the outer case, and shrinking the resin by heating to adhere to the outer case. And the like.

In FIG. 1, reference numeral 19 denotes a fixing member, and the fixing member is formed by combining a first member 20 and a second member 30. This first member is shown in FIG. First member 2
Reference numeral 0 denotes a cylindrical main body 21 having a housing space A having a diameter slightly larger than the outer diameter of the electrolytic capacitor main body 50;
It is composed of a flange 22 attached to one side surface. One end of the main body 21 is formed with a slit in the longitudinal direction, and the respective pieces 23 separated by the slit become flexible due to the elasticity of the resin in the diameter direction (center direction) of the cylindrical electrolytic capacitor. ing. Further, a projection is formed at the tip of each piece 23, and fits into the locking recess 58 of the electrolytic capacitor body 50. A slit is also formed at the other end of the main body 21 of the first member, and each protruding piece 25 divided by the slit is formed in the diameter direction (central direction) of the cylindrical electrolytic capacitor by the elasticity of the resin. ) Is in a flexible state. Further, a taper 26 is formed at the tip end portion of each protruding piece 25 so that its thickness becomes thinner as approaching the tip end. In addition, a through hole 27 is formed in each of the flange portions 22 attached to the side surface of the main body portion 21 of the first member.

FIG. 3 shows the second member. Second member 30
Is a cylindrical main body 31 having a storage space B having a diameter slightly larger than the outer diameter of the main body 21 of the first member, and a flange attached to the main body 31. It is composed of a part 32. The collar 32 is the main body 31
When the first member is fitted so as to cover the second member, the flange 22 of the first member
And the flange 32 of the second member are in contact with each other. A flange 3 is provided on the inner peripheral surface of the main body 31 of the second member.
A taper 33 is formed such that the width of the storage space B becomes narrower toward the side opposite to the side 2. Also, a through hole 34 is formed in each of the flange portions 32 of the second member.

When attaching the fixing member composed of the first member and the second member to the electrolytic capacitor body, first, the first member 20 is attached to the electrolytic capacitor body. Then, the projection 24 of the first member is fitted into the locking recess 58 of the electrolytic capacitor body to position the first member. In this case, since the piece 23 on which the protrusion 24 is formed exerts a force in a direction in which the protrusion 24 fits into the locking recess 58 by elasticity, the first member is temporarily fixed to the electrolytic capacitor main body. It does not easily fall off the electrolytic capacitor body.

Thereafter, the second member 30 is connected to the first member 20.
Attach to cover. At this time, the first member 2
As the taper 26 formed at the tip of the protruding piece 25 abuts against the taper 33 inside the main body 31 of the second member, and as the second member is pushed into the first member, the first member The protruding piece 31 bends and presses the electrolytic capacitor body 10. When the protruding piece 31 presses the electrolytic capacitor main body 10, the first member 20 and the electrolytic capacitor main body 10 are fixed to such an extent that they do not relatively rotate. At this time, when the flange 22 of the first member and the flange 32 of the second member abut, the angle and length of the taper are adjusted so that the electrolytic capacitor and the first member are completely fixed. It is preferable to adjust it.

The first member 20 and the second member 30 exert a force in the direction of separating from each other due to the taper formed respectively, but the respective flange portions 22 of the first member 20 and the second member 30 , 32 can be prevented by the locking members such as the bolts 12 and the nuts 13 so that the first member and the second member can be prevented from being separated from each other. Can maintain the force of pressing the electrolytic capacitor body.

The fixing of the electrolytic capacitor to the chassis 11 can be performed simultaneously with the locking of the first member and the second member by the locking member. That is, a through-hole is also formed in the chassis 11, and the bolt 12 is inserted into the through-hole of the second member, the through-hole of the first member, and the through-hole of the chassis, and the opposite side is formed by the nut 13. By tightening, at the same time as the integration of the fixing member into the electronic component,
Can be mounted on the chassis. When the operation of locking the first member and the second member and the operation of attaching the electronic component to the chassis are performed at the same time, the work efficiency is improved, and the first member and the second member are locked. It is not necessary to provide a dedicated through-hole or the like for fixing to the chassis separately from the through-hole, and the size of the entire electrolytic capacitor can be reduced.

The electrolytic capacitor constructed as described above is used, for example, by fixing a plurality of electrolytic capacitors to one chassis. When the electrolytic capacitors are fixed to the chassis, the positional relationship between the fixing member and the electronic component body is determined by the electrolytic capacitor. The locking recess formed in the main body is determined based on the reference. Therefore, the position of the locking recess of the electrolytic capacitor body is fixed, and the mounting position on the chassis is also at the same height, so that the position of the electronic components mounted on the chassis is constant, and the electrolytic capacitor The height of the external terminals can also be constant. Therefore, even when the external terminals are electrically connected to each other, the work of attaching the connecting members of the external terminals becomes easy, which is convenient.

In this embodiment, a lateral groove is used as the locking concave portion formed in the electrolytic capacitor main body. However, the present invention is not limited to such a structure. The locking recess may be formed in the electrolytic capacitor body. The point is that the fixing member only needs to have a projection that matches the locking concave portion, and the shape of the locking concave portion is arbitrary.

Further, in the above embodiment, the projection formed on the first member is provided on a separate piece from the projection for pressing the electronic component body. As shown in the figure, a configuration may be employed in which the projection 24 is formed on a projection 25 for pressing the electronic component body.

When the projection 24 is formed on the protruding piece 25 as described above, the projection is formed in a state where the projection 24 of the first member is fitted into the locking recess of the electronic component body. The protruding piece 25 is pushed in by the taper of the second member, and the outer periphery of the protruding piece of the first member is covered by the inner surface of the main body of the second member. ) Is restricted, so that there is almost no danger that the projection will come off the locking recess. Further, since the protruding piece 25 is covered with the second member and is protected from the outside, it is possible to prevent a problem that the protruding piece 25 is broken by applying an excessive force from the outside.

[0029]

The electronic component configured as described above has the following effects.

According to the first aspect of the present invention, the position of the fixing member attached to the electronic component main body is determined by the position of the locking recess formed in the electronic component main body. By setting the position of the locking concave portion formed at a fixed position, the relative position between the fixing member and the electronic component main body can also be fixed. Therefore, even if electronic components are mounted on the chassis,
The height of the external terminal can be made constant. Further, in the step of attaching the fixing member to the electronic component, the first member is temporarily fixed to the electronic component body and is not easily detached, so that the operation of attaching the second member is simplified. It will be. Further, the locking recess of the electronic component is
Even after the opening end of the electronic component is sealed, the electronic component can be easily formed at an arbitrary place, so that the positional relationship between the electronic component and the fixing member can be easily determined according to various needs. Further, since the protruding piece of the fixing member presses the electronic component main body, the electronic component main body and the fixing member are fixed, and the relative rotation of the electronic component and the fixing member can be prevented.

According to the second aspect of the present invention, the first member and the second member of the fixing member are locked by the locking member, so that the first member and the second member are separated from each other. In addition to the above, the force by which the fixing member presses the electronic component body can be maintained. Therefore, the rotation of the electronic component body relative to the fixing member can be reliably and prevented for a long period of time.

According to the third aspect of the present invention, the first component and the second member are locked in the flange portion and stopped in the through hole by the locking member. This can be performed at the same time as the mounting process, which is advantageous in that the efficiency of the mounting operation is improved.

According to the fourth aspect of the present invention, when the projection of the first member is fitted into the locking recess of the electronic component main body, the projection formed with the projection is tapered by the second member. And the outer periphery of the protruding piece of the first member is covered by the inner surface of the main body of the second member, and the flexibility in the radial direction (outward direction) from the center of the electronic component is restricted. Therefore, there is almost no danger that the projection will come off the locking recess. Further, since the protruding piece is covered with the second member and is protected from the outside, it is possible to prevent a problem that the protruding piece is broken by an excessive force applied from the outside.

[Brief description of the drawings]

FIG. 1 is a front view illustrating an electronic component of the present invention.

FIGS. 2A and 2B are views showing a first member of a fixing member used in the present invention, wherein FIG. 2A is a view seen from above, and FIG. 2B is a front view in which a dotted line of FIG.

FIGS. 3A and 3B are views showing a second member of the fixing member used in the present invention, wherein FIG. 3A is a view seen from above, and FIG. 3B is a front view in which a dotted line of FIG.

FIG. 4 is a diagram illustrating a conventional metal fixing member.

FIG. 5 is a partial sectional view showing an internal structure of the electrolytic capacitor.

6A and 6B are views showing a first member used in another embodiment of the present invention, wherein FIG. 6A is a view seen from above, and FIG. 6B is a front view in which a dotted line of FIG. is there.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Electronic component 11 Chassis 12 Bolt (locking member) 13 Nut (locking member) 20 First member 21 Main body 22 Flange 23 Piece 24 Projection 25 Projection 26 Taper 27 Through-hole 30 Second member 31 Main body Part 32 flange part 33 taper 34 through hole 40 electrolytic capacitor (electronic component) 41 fixing member 42 end 43 mounting foot 44 through hole 45 screw 50 electronic component main body (electrolytic capacitor main body) 51 capacitor element 52 outer case 53 electrode tab 54 Sealing plate 55 External terminal 56 Elastic member 57 Lateral groove 58 Locking recess 59 Exterior sleeve A Storage space B Storage space

Claims (4)

[Claims] 1. An electronic component comprising an electronic component body having a locking recess formed on an outer peripheral surface thereof, and a fixing member attached to the outer peripheral surface of the electronic component main body, wherein the fixing member is made of an insulating material. A first member having a projection that fits into a locking recess of the electronic component body, a first member having a flexible protrusion in a center direction of the electronic component, and a first member that can be attached to the outside of the first member. An inner peripheral surface of a main body having a storage space is formed of a second member having a tapered shape in which the width of the storage space is gradually reduced. The second member is attached to the outside of the first member positioned by fitting the protrusion, and the taper formed in the second member presses the projecting piece of the first member against the electronic component body. An electronic component in which a fixing member is fixed to an electronic component body. 2. The electronic component according to claim 1, wherein the first member and the second member are locked by locking means to prevent detachment of the first member and the second member. 3. The first member and the second member are each formed with a flange having a through hole, and the second member is mounted on the first member, and each of the flanges is in contact with the first member. The electronic component according to claim 2, wherein the first member and the second member are locked by inserting a locking member into the through hole of the portion. 4. The electronic component according to claim 1, wherein the projection of the first member is formed as a projection.