WO2018047751A1

WO2018047751A1 - Electronic component package, electronic control device, and servo motor

Info

Publication number: WO2018047751A1
Application number: PCT/JP2017/031697
Authority: WO
Inventors: 有晃佐藤; 洪偉甄; 隆平渡部; 千石谷　善一
Original assignee: パナソニックＩｐマネジメント株式会社
Priority date: 2016-09-07
Filing date: 2017-09-04
Publication date: 2018-03-15
Also published as: JP2019195003A

Abstract

An electronic component package is provided with: a substrate having a mounting surface; an electronic component mounted on the mounting surface of the substrate; and a fixing member. The fixing member includes an insertion opening which is spaced apart from the mounting surface and into which the electronic component is inserted, and a peripheral portion which is disposed so as to surround the insertion opening and which presses and fixes the electronic component inserted into the insertion opening.

Description

Electronic component mounting body, electronic control device, and servo motor

The present invention relates to an electronic component mounting body, an electronic control device, and a servo motor, and more particularly to improvement of vibration resistance of an electronic component mounted on a substrate.

Conventionally, electronic parts are mounted on a printed circuit board or the like via a connecting material such as solder. In particular, tall electronic components such as large capacitors are mounted on a substrate using a fixture as described in Patent Document 1 and Patent Document 2 in order to improve vibration resistance.

When the board on which the electronic component is mounted vibrates, the electronic part vibrates starting from the joint with the board. At this time, the greater the distance from the substrate of the electronic component, the greater the swing width. Therefore, even if the fixture is arranged near the substrate and the electronic component is fixed, it is difficult to suppress vibration of the electronic component.

JP 2010-123651 A JP 2007-173111 A

The present invention aims to solve the above problems.

The electronic component mounting body according to one aspect of the present invention includes a substrate having a mounting surface, an electronic component mounted on the mounting surface of the substrate, and a fixing member. The fixing member is disposed apart from the mounting surface, and has an insertion port for inserting the electronic component, and a peripheral portion that is disposed so as to surround the insertion port and presses and fixes the electronic component inserted into the insertion port. Have.

An electronic control device according to another aspect of the present invention includes an electronic component mounting body and a housing that covers the electronic component mounting body.

A servo motor according to still another aspect of the present invention includes an electric motor and the electronic control device.

According to the present invention, an electronic component mounting body having excellent vibration resistance can be obtained by a fixing member having a simple structure.

FIG. 1 is a perspective view schematically showing an electronic component mounting body according to an embodiment of the present invention. FIG. 2A is a side view schematically showing a part of the example of the electronic component mounting body according to the embodiment of the present invention. FIG. 2B is a side view schematically showing a part of another example of the electronic component mounting body according to the exemplary embodiment of the present invention. FIG. 2C is a side view schematically showing a part of still another example of the electronic component mounting body according to the exemplary embodiment of the present invention. FIG. 3A is a perspective view illustrating a fixing member according to the first embodiment. 3B is a cross-sectional view showing an example of 3B-3B in FIG. 3A. 3C is a cross-sectional view showing an example of 3C-3C in FIG. 3A. FIG. 4A is a perspective view illustrating a fixing member according to the second embodiment. FIG. 4B is a top view illustrating a part of the fixing member according to the second embodiment. FIG. 4C is a top view illustrating another part of the fixing member according to the second embodiment. FIG. 5A is a perspective view illustrating a fixing member according to a third embodiment. FIG. 5B is a top view illustrating a part of the fixing member according to the third embodiment. FIG. 6A is a perspective view illustrating a fixing member according to a fourth embodiment. 6B is a cross-sectional view taken along line 6B-6B in FIG. 6A. FIG. 7A is a perspective view illustrating a fixing member according to a fifth embodiment. FIG. 7B is a cross-sectional view taken along line 7B-7B in FIG. 7A. FIG. 8 is a perspective view schematically showing an electronic component mounting body including the fixing member according to the fifth embodiment. FIG. 9A is a perspective view illustrating a fixing member according to a sixth embodiment. 9B is a cross-sectional view taken along line 9B-9B in FIG. 9A. FIG. 10A is a perspective view illustrating a fixing member according to a seventh embodiment. 10B is a cross-sectional view taken along line 10B-10B in FIG. 10A. FIG. 11 is a perspective view schematically showing an electronic component mounting body including the fixing member according to the seventh embodiment. FIG. 12 is a perspective view schematically showing the electronic control device according to the embodiment of the present invention. FIG. 13 is a perspective view schematically showing another electronic control device according to the embodiment of the present invention. FIG. 14 is a block diagram illustrating the configuration of the servo motor according to the embodiment of the present invention.

(1) Electronic component mounting body An electronic component mounting body according to an embodiment of the present invention includes a substrate having a mounting surface, an electronic component mounted on the mounting surface of the substrate, and a fixing member for fixing the electronic component. . The fixing member is disposed away from the mounting surface. The fixing member has a main surface facing the mounting surface, a sub surface opposite to the main surface, and an insertion port for inserting an electronic component. The electronic component is inserted into the insertion port of the fixing member, and is fixed by being pressed by the peripheral portion arranged so as to surround the insertion port.

The fixing member is disposed away from the substrate. Therefore, the fixing member can fix a portion where the swing width of the electronic component is larger (a portion away from the substrate of the electronic component). Further, even if the substrate vibrates, the fixing member is not easily affected. Therefore, the effect of suppressing vibration of the electronic component is high. Further, the electronic component is pressed by the peripheral edge portion of the insertion port provided in the fixing member. In other words, at least a part of the peripheral portion of the fixing member is in contact with the electronic component. The electronic component vibrates when a vibration that matches the natural frequency (resonance frequency) of the electronic component is transmitted. However, when the fixing member is in contact with the electronic component, the natural frequency of the electronic component changes, and the electronic component is less likely to vibrate. That is, the fixing member according to the embodiment of the present invention makes it difficult for the electronic component to vibrate, and even if it vibrates, the vibration is suppressed.

Hereinafter, the electronic component mounting body according to the embodiment of the present invention will be specifically described with reference to FIGS. 1 to 2C. FIG. 1 is a perspective view schematically showing an electronic component mounting body 100 according to an embodiment of the present invention. FIG. 2A is a side view schematically showing a part of the example of the electronic component mounting body 100 according to the embodiment of the present invention. FIG. 2B is a side view schematically showing a part of another example of electronic component mounting body 100 according to the exemplary embodiment of the present invention. FIG. 2C is a side view schematically showing a part of still another example of the electronic component mounting body 100 according to the exemplary embodiment of the present invention. The electronic component mounting body 100 includes a substrate 110 having a mounting surface 110x, an electronic component 120 mounted on the mounting surface 110x of the substrate 110, and a fixing member 130 that fixes the electronic component 120. The fixing member 130 is disposed away from the mounting surface 110x. The fixing member 130 includes a main surface 130x facing the mounting surface 110x, a sub surface 130y opposite to the main surface 130x, and an insertion port 1301 (see FIG. 3 and the like) into which the electronic component 120 is inserted. When the electronic component 120 is a capacitor, the end of the electronic component 120 that is not bonded to the mounting surface 110x may be covered with the cap 140.

As shown in FIG. 2A, the fixing member 130 fixes the electronic component 120 at a position of a height HF (hereinafter referred to as a fixed height HF) from the mounting surface 110x. The fixed height HF is not particularly limited. Among these, the higher the fixed height HF, the better the vibration is easily suppressed. For example, when the height of the electronic component 120 from the mounting surface 110x is HE (hereinafter simply referred to as the height HE of the electronic component 120), the fixed height HF is 1/2 of the height HE of the electronic component 120. The above is preferable. The height HE of the electronic component 120 is a distance from the mounting surface 110x to the highest position of the electronic component 120. The fixed height HF is a distance from the mounting surface 110x to a pressing portion P (a portion corresponding to a part of a peripheral portion 130p described later) by the fixing member 130 of the electronic component 120. FIG. 3A is a perspective view illustrating a fixing member according to the first embodiment. 3B is a cross-sectional view showing an example of 3B-3B in FIG. 3A. 3C is a cross-sectional view showing an example of 3C-3C in FIG. 3A. The fixed height HF may be a distance from the mounting surface 110x to the main surface 130x of the fixing member 130. Alternatively, when the fixing member 130 includes the support wall 1304 (FIG. 2B) as described later, the fixing height HF is equal to the distance HF1 from the mounting surface 110x to the main surface 130x and the mounting surface 110x, as shown in FIG. 2B. And the distance HF2 from the support wall 1304 to the end of the support wall 1304.

When n (n is a natural number greater than or equal to 2) fixing members 130 are stacked, the fixing height HF is measured with reference to the main surface 130x of the fixing member 130 arranged closest to the mounting surface 110x. It only has to be done. At this time, the fixed height HF of the fixing member 130 arranged closest to the mounting surface 110x may be 1 / (n + 1) or more (n is a natural number of 2 or more) of the height HE. Considering the thickness of the entire fixing member 130, the vibration of the electronic component 120 is easily suppressed by setting the fixing height HF of the fixing member 130 disposed closest to the mounting surface 110x within the above range.

The plurality of fixing members 130 may be installed at equal intervals in the stacking direction. In this case, the fixed height HF of the fixing member 130 disposed closest to the mounting surface 110x is 1 / (n + 1) of the height HE. The remaining fixing members 130 are arranged such that the interval between the respective fixing heights HF is 1 / (n + 1) of the height HE. For example, in FIG. 2C, the two fixing

members

131 and 132 are installed at equal intervals in the direction in which they are stacked. At this time, the fixing height HF of the fixing member 131 is 1/3 of the height HE. The fixing height HF of the fixing member 132 is 2/3 of the height HE. Especially, it is preferable that all the fixing height HF of the some fixing member 130 is 1/2 or more of the height HE of the electronic component 120 at the point which a vibration is easy to be suppressed.

The electronic component 120 is inserted into the insertion port 1301 provided in the fixing member 130. At this time, the electronic component 120 and at least a part of the peripheral portion 130p surrounding the insertion port 1301 of the fixing member 130 are in contact with each other. Then, the electronic component 120 is pressed and fixed to the fixing member 130 at the place where the electronic component 120 is in contact with the peripheral portion 130p. The shape of the peripheral portion 130p is not particularly limited, and various modes are conceivable. Hereinafter, specific examples of the shape of the peripheral portion 130p will be described with reference to the drawings.

[First Embodiment]
Hereinafter, the fixing member 130A including the peripheral portion 130p of the first embodiment will be specifically described with reference to FIGS. 3A to 3C. FIG. 3A is a perspective view showing a fixing member 130A of the first embodiment. 3B is a cross-sectional view showing an example of 3B-3B in FIG. 3A. 3C is a cross-sectional view showing an example of 3C-3C in FIG. 3A.

The peripheral portion 130p of the first embodiment has an end surface including an inclined surface that narrows the opening area of the insertion port 1301 from the main surface 130x of the fixing member 130 toward the sub surface 130y. In other words, at least a part of the end face of the peripheral portion 130p is tapered. At this time, the opening area on the side of the sub surface 130y is made substantially the same as the area when viewed from the normal direction of the mounting surface 110x of the electronic component 120. Thus, the electronic component 120 is pressed by a part of the end surface in the vicinity of the sub surface 130y and is fixed to the fixing member 130.

The end surface 130t of the peripheral portion 130p includes, for example, an inclined surface 130ts and a vertical surface 130tv, as shown in FIG. 3B. The inclined surface 130ts is inclined so as to narrow the opening area of the insertion port 1301 from the main surface 130x toward the sub surface 130y. That is, the insertion port 1301 is gradually narrowed in the direction D1 from the main surface 130x toward the sub surface 130y. The acute angle θ1 formed by the inclined surface 130ts and the main surface 130x is not particularly limited, but is, for example, 30 to 75 degrees. The vertical surface 130tv is, for example, perpendicular to the main surface 130x. Alternatively, an acute angle (not shown) formed by the vertical surface 130tv and the main surface 130x is preferably larger than the acute angle θ1 and less than 90 degrees. In this case, for example, the electronic component 120 comes into contact with the vertical surface 130tv and is pressed by the pressing portion P where the electronic component 120 and the vertical surface 130tv come into contact.

The end surface 130t of the peripheral portion 130p may be formed by only the inclined surface 130ts as shown in FIG. 3C, for example. In this case, the electronic component 120 is pressed in contact with, for example, the inclined surface 130ts in the vicinity of the sub surface 130y. Further, by stacking a plurality of fixing members 130, an insertion port 1301 whose opening area becomes narrower from the main surface 130x toward the sub surface 130y may be formed. The end face 130t is a face of the peripheral part 130p that faces the inserted electronic component 120.

As described above, in the electronic component mounting body 100 according to the first embodiment, the peripheral edge portion 130p is inserted from the main surface 130x facing the mounting surface 110x toward the sub surface 130y opposite to the main surface 130x. The electronic device 120 is fixed to the fixing member 130 by being pressed by a part of the end surface 130t.

[Second Embodiment]
Hereinafter, the fixing member 130B including the peripheral portion 130p of the second embodiment will be specifically described with reference to FIGS. 4A to 4C. FIG. 4A is a perspective view showing a fixing member 130B of the second embodiment. FIG. 4B is a top view showing a part of the fixing member 130B of the second embodiment. FIG. 4C is a top view showing another part of the fixing member 130B of the second embodiment.

In the second embodiment, when viewed from the normal direction of the mounting surface 110x of the substrate 110, the shape of the insertion port 1301 and the shape of the electronic component 120 are different. Therefore, the electronic component 120 is pressed by making point contact with the peripheral portion 130 p and is fixed to the fixing member 130.

In FIG. 4B, the shape (hereinafter, upper surface shape E) when viewed from the normal direction of the mounting surface 110x of the electronic component 120 is circular, whereas the shape of the insertion port 1301 (hereinafter, upper surface shape I) is square. It is. Therefore, the electronic component 120 is pressed by the four pressing portions P in the peripheral portion 130p and fixed to the fixing member 130B. The upper surface shape E and the upper surface shape I are not limited to this. For example, when the upper surface shape E is a circle, examples of the upper surface shape I include an ellipse, a polygon such as a triangle, a quadrangle, and a hexagon. Especially, it is preferable that the upper surface shape I is a shape which can press the electronic component 120 with the three or more press parts P at the point where the electronic component 120 is fixed more firmly.

The difference between the upper surface shape E and the upper surface shape I includes the case where the directions are different even if they are the same shape. For example, as illustrated in FIG. 4C, the upper surface shape I and the upper surface shape E are both square, but when the electronic component 120 is inserted into the insertion port 1301, the positions of the apexes do not overlap. In this case, the electronic component 120 is pressed by the peripheral portion 130p at its four apexes. In the case of FIG. 4C, the upper surface shape I is a shape obtained by enlarging the upper surface shape E and rotating it 90 degrees. Alternatively, a plurality of fixing members 130 B having different top surface shapes I may be stacked to form the insertion port 1301 having a shape different from the top surface shape E.

As described above, in the electronic component mounting body 100 according to the second embodiment, the shape of the insertion port 1301 and the shape of the electronic component 120 are different when viewed from the normal direction of the mounting surface 110x. 120 may be pressed by making point contact with the peripheral portion 130p and fixed to the fixing member 130B.

[Third Embodiment]
Hereinafter, the fixing member 130 C including the peripheral portion 130 p according to the third embodiment will be specifically described with reference to FIGS. 5A and 5B. FIG. 5A is a perspective view showing a fixing member 130C of the third embodiment. FIG. 5B is a top view illustrating a part of the fixing member 130 C according to the third embodiment.

The peripheral portion 130p of the third embodiment has a plurality of protrusions 1302 that protrude toward the insertion port 1301 side. The electronic component 120 is pressed by the protrusion and fixed to the fixing member 130.

The peripheral portion 130p includes, for example, three protrusions 1302 that protrude toward the insertion port 1301 as shown in FIG. 5B. When the electronic component 120 is inserted into the insertion port 1301, the electronic component 120 comes into contact with the protrusion 1302 (point contact) and is pressed. In FIG. 5B, three continuous protrusions 1302 are arranged at one place, and the three protrusions 1302 are equally arranged at the peripheral portion 130p. The shape, arrangement, and number of the protrusions 1302 are not limited to this. Especially, it is preferable that the protrusion 1302 is equally arrange | positioned at three or more places in the peripheral part 130p at the point which the vibration of the electronic component 120 is easy to be suppressed.

As described above, in the electronic component mounting body 100 according to the third embodiment, the peripheral portion 130p has the plurality of protrusions 1302 protruding toward the insertion port 1301, and the electronic component 120 has the protrusion It may be pressed by 1302 and fixed to the fixing member 130C.

[Fourth Embodiment]
Hereinafter, the fixing member 130D including the peripheral edge portion 130p of the fourth embodiment will be specifically described with reference to FIGS. 6A and 6B. FIG. 6A is a perspective view showing a fixing member 130D of the fourth embodiment. 6B is a cross-sectional view taken along line 6B-6B in FIG. 6A.

The peripheral portion 130p of the fourth embodiment has a plurality of tongue pieces 1303 divided by slits. At this time, the opening area of the insertion port 1301 is made smaller than the area of the electronic component 120. Thereby, the electronic component 120 is inserted into the insertion port 1301 while pushing up the tongue piece 1303. Therefore, the electronic component 120 is pressed by the tongue piece 1303 and fixed to the fixing member 130.

In the peripheral portion 130p, for example, as shown in FIG. 6A, a plurality of slits 1303s are formed radially from the center of the insertion port 1301. Thereby, a plurality of tongue pieces 1303 are formed. The opening area of the insertion port 1301 is smaller than the area of the electronic component 120. Therefore, when the electronic component 120 is inserted into the insertion port 1301, the tongue piece 1303 is pushed up by the electronic component 120 as shown in FIG. 6B. Accordingly, the tongue piece 1303 contacts the electronic component 120 and presses the electronic component 120. In FIG. 6A, six slits 1303s are formed in the peripheral portion 130p, and six tongue pieces 1303 are formed. The shape, arrangement, and number of the tongue pieces 1303 are not limited to these. In terms of easy insertion of the electronic component 120, it is preferable that three or more identical tongue pieces 1303 are equally arranged on the peripheral edge portion 130p. The length and arrangement of the slits 1303s are not particularly limited, and may be appropriately formed so as to obtain a desired tongue piece 1303.

As described above, in the electronic component mounting body 100 according to the fourth embodiment, the peripheral portion 130p includes the plurality of tongue pieces 1303 divided by the slits 1303s, and the electronic component 120 includes the tongue pieces 1303. And may be fixed to the fixing member 130D.

[Fifth Embodiment]
Hereinafter, the fixing member 130E of the fifth embodiment will be specifically described with reference to FIGS. 7A and 7B. FIG. 7A is a perspective view showing a fixing member 130E of the fifth embodiment. 7B is a cross-sectional view taken along line 7B-7B in FIG. 7A.

The peripheral portion 130p of the fifth embodiment has a support wall 1304 standing in a direction D2 from the sub surface 130y toward the main surface 130x along at least part of the periphery of the insertion port 1301. Thereby, the vibration of the electronic component 120 is further easily suppressed. At this time, the inner wall of the support wall 1304 is tapered, a protrusion 1302 is provided on the inner wall, a plurality of slits are formed in the support wall 1304 along the height direction thereof, or a tongue piece is formed, or The shape surrounded by at least one of the insertion port and the inner wall is made to be a shape different from the upper surface shape E. Alternatively, these may be combined. As a result, the electronic component 120 contacts and is pressed against at least a part of the support wall 1304 and is fixed to the fixing member 130E.

The support wall 1304 of the fixing member 130E is erected in the direction D2 from the sub surface 130y toward the main surface 130x along the entire circumference of the insertion port 1301. Further, a plurality of protrusions 1302 protruding toward the insertion port 1301 are arranged on the inner wall 1304t of the support wall 1304. When the electronic component 120 is inserted into the support wall 1304, the electronic component 120 is brought into point contact with the protrusion 1302 and pressed. Thereby, vibration is suppressed. Further, the support wall 1304 suppresses vibrations to be smaller. Note that the support wall 1304 only needs to be erected along at least a part of the periphery of the insertion port 1301. When the support wall 1304 is erected along a part of the periphery of the insertion port 1301, a plurality of the support walls 1304 are erected intermittently with a width of 1/10 or more of the periphery of the insertion port 1301. It is preferable.

7B, the support wall 1304 is erected in the direction D2 from the main surface 130x. That is, as shown in FIG. 7B, the electronic component 120 is inserted into the support wall 1304 from the end of the support wall 1304 on the mounting surface 110x side. Therefore, the protrusion 1302 is preferably arranged in the vicinity of the sub surface 130y of the inner wall 1304t. This is because the electronic component 120 is easily inserted. FIG. 8 is a perspective view schematically showing an electronic component mounting body 100 including a fixing member 130E according to the fifth embodiment.

The support wall 1304 may be erected in a tapered shape such that the diameter increases in the direction D2. Thereby, the electronic component 120 becomes easier to insert. The acute angle θ2 formed between the inner wall 1304t of the support wall 1304 and the main surface 130x is larger than the acute angle θ1. Specifically, the acute angle θ2 is, for example, 70 to 90 degrees. In FIG. 7B, the support wall 1304 is erected along the normal direction of the main surface 130x (at θ2 = 90 °).

The support wall 1304 may be erected in the direction D1 (not shown). In this case, the protrusion 1302 may be disposed in the vicinity of the end of the inner wall 1304t opposite to the mounting surface 110x. This is because the electronic component 120 is easily inserted. Also in this case, the support wall 1304 may be erected in a tapered shape such that the diameter increases in the direction D2.

As described above, in the electronic component mounting body 100 according to the fifth embodiment, the peripheral portion 130p stands in a direction from the sub surface 130y toward the main surface 130x along at least a part of the periphery of the insertion port 1301. A support wall 1304 may be further provided.

[Sixth Embodiment]
Hereinafter, the fixing member 130F according to the sixth embodiment will be specifically described with reference to FIGS. 9A and 9B. FIG. 9A is a perspective view illustrating a fixing member 130F according to the sixth embodiment. 9B is a cross-sectional view taken along line 9B-9B in FIG. 9A. The fixing member 130F of the sixth embodiment includes a tapered support wall 1304.

The peripheral portion 130p of the sixth embodiment has a support wall 1304 that stands up in a tapered shape with the diameter decreasing toward the direction D1. The support wall 1304 is erected in a direction D1 from the main surface 130x toward the sub surface 130y along at least a part of the periphery of the insertion port 1301. Therefore, when the electronic component 120 is inserted into the support wall 1304, the electronic component 120 comes into contact with and is pressed near the end portion of the inner wall 1304t opposite to the mounting surface 110x. Thereby, the vibration of the electronic component 120 is suppressed.

The support wall 1304 of the fixing member 130F is erected in the direction D1 from the main surface 130x toward the sub surface 130y along the entire circumference of the insertion port 1301. The support wall 1304 is tapered so that the diameter increases in the direction D2. That is, the diameter of the support wall 1304 on the mounting surface 110 x side is larger than the area of the electronic component 120. The diameter of the support wall 1304 opposite to the mounting surface 110x is substantially the same as the area of the electronic component 120. Therefore, when the electronic component 120 is inserted into the support wall 1304, the electronic component 120 comes into contact with and is pressed near the end portion of the inner wall 1304t opposite to the mounting surface 110x. Thereby, the vibration of the electronic component 120 is suppressed. The tapered support wall 1304 may be erected in the direction D2 (not shown). Also in this case, the support wall 1304 is tapered so that the diameter increases in the direction D2.

The acute angle θ3 formed by the inner wall 1304t of the tapered support wall 1304 and the main surface 130x is, for example, the same as the acute angle θ1. Specifically, the acute angle θ3 is, for example, 60 to 80 degrees.

As described above, in the electronic component mounting body 100 according to the sixth embodiment, the peripheral portion 130p extends from the main surface 130x facing the mounting surface 110x along at least a part of the periphery of the insertion port 1301. You may have the support wall 1304 standingly arranged in the direction which goes to the sub surface 130y on the opposite side of the surface 130x.

[Seventh Embodiment]
Hereinafter, the fixing member 130G of the seventh embodiment will be specifically described with reference to FIGS. 10A and 10B. FIG. 10A is a perspective view showing a fixing member 130G of the seventh embodiment. 10B is a cross-sectional view taken along line 10B-10B in FIG. 10A.

The peripheral portion 130p of the seventh embodiment includes a support wall 1304 and a projection 1302 disposed on the inner wall 1304t of the support wall 1304. The support wall 1304 is erected in a direction D1 from the main surface 130x toward the sub surface 130y along at least a part of the periphery of the insertion port 1301. The peripheral portion 130p includes a cover 1305 that extends from an end portion of the support wall 1304 opposite to the mounting surface 110x and covers the insertion port 1301.

The fixing member 130G includes a support wall 1304 and a protrusion 1302 disposed on the inner wall 1304t of the support wall 1304. Therefore, when the electronic component 120 is inserted into the support wall 1304, as in the fifth embodiment, the electronic component 120 is point-contacted with the protrusion 1302 and pressed to suppress vibration. The The support wall 1304 further suppresses vibration.

FIG. 11 is a perspective view schematically showing an electronic component mounting body 100 including the fixing member 130G according to the seventh embodiment. The fixing member 130G includes a cover 1305 that extends from the end of the support wall 1304 opposite to the mounting surface 110x and covers the insertion port 1301. The support wall 1304 is erected in the direction D1 along the entire circumference of the insertion port 1301. Therefore, when the electronic component 120 is inserted into the support wall 1304, the support wall 1304 and the cover 1305 cover the end of the electronic component 120 that is not joined to the mounting surface 110x, as shown in FIG. It functions as the cap 140. This aspect is preferable because the number of parts and the number of processes can be reduced.

When the protrusion 1302 is disposed in the vicinity of the end of the inner wall 1304t opposite to the mounting surface 110x, the electronic component 120 is easily inserted. On the other hand, if the protrusion 1302 is disposed in the vicinity of the end of the inner wall 1304t on the mounting surface 110x side, the vibration resistance is further improved. Also in this case, the support wall 1304 may be erected in a tapered shape such that the diameter increases in the direction D2.

The support wall 1304 may be erected in the direction D2 (not shown). Also in this case, the cover 1305 extends from the end of the support wall 1304 opposite to the mounting surface 110x so as to cover the insertion port 1301. That is, the cover 1305 is disposed on the same surface as the main surface 130x or the sub surface 130y. Similarly to the above, when the electronic component 120 is inserted into the support wall 1304, the support wall 1304 and the cover 1305 can function as the cap 140 of the electronic component 120.

As described above, in the electronic component mounting body 100 according to the seventh embodiment, the fixing member 130G may have the cover 1305 extending from the support wall 1304 and covering the insertion port 1301.

As described above, the electronic component mounting body 100 according to the embodiment of the present invention includes the substrate 110 having the mounting surface 110x, the electronic component 120 mounted on the mounting surface 110x of the substrate 110, and the fixing member 130. . The fixing member 130 is disposed apart from the mounting surface 110x, and is disposed so as to surround the insertion port 1301 and the insertion port 1301, and presses the electronic component 120 inserted into the insertion port 1301. And a peripheral edge portion 130p to be fixed.

Thus, it is possible to obtain an electronic component mounting body with excellent vibration resistance by a fixing member having a simple structure.

In addition, it is preferable that the fixing member 130 fixes the electronic component 120 at a position separated by 1/2 or more of the height HE from the mounting surface 110x.

In addition, the height of the electronic component 120 from the mounting surface 110x is HE, and n (n is a natural number of 2 or more) fixing members arranged at a predetermined interval in a direction perpendicular to the mounting surface 110x of the substrate 110. When 130 is provided, it is preferable that the fixing member 130 fixes the electronic component 120 at a position separated from the mounting surface 110x by 1 / (n + 1) or more of the height HE.

(2) Electronic Control Device Hereinafter, the electronic control device 200 according to the embodiment of the present invention will be specifically described with reference to FIGS. 12 and 13. FIG. 12 is a perspective view schematically showing the electronic control device 200 according to the embodiment of the present invention. FIG. 13 is a perspective view schematically showing another electronic control device 200 according to the embodiment of the present invention. In FIGS. 12 and 13, members housed in the casing 210 other than the electronic component mounting body 100 and the heat dissipation member 220 are omitted for convenience.

The electronic component mounting body 100 is housed in, for example, a housing 210 and used as an electronic control device 200 for various electronic devices.

The electronic control device 200 includes an electronic component mounting body 100 and a housing 210 that covers the electronic component mounting body 100, as shown in FIG. The housing 210 includes an upper case 211 and a lower case 212. The electronic component mounting body 100 is housed in the housing 210 by being housed in the lower case 212 and then being covered with the upper case 211.

The fixing member 130 is preferably fixed to a member other than the substrate 110 accommodated in the housing 210. This is because vibration resistance is further enhanced. The fixing member 130 may be fixed to the heat radiating member 220 as shown in FIG. Usually, the heat dissipating member 220 is disposed between the substrate 110 and the lower case 212. Therefore, when fixing the fixing member 130 to the heat radiating member 220, a part of the heat radiating member 220 is raised to the upper case 211 side, and the height of the rising portion is set to the height from the mounting surface 110x of the fixing member 130 ( For example, it is the same as the fixed height HF. Thereby, the fixing member 130 and the heat radiating member 220 can be fixed by the screw 230. That is, in this case, the fixing member 130 can be fixed by an extremely simple assembling method in which screw holes are provided in the fixing member 130 and the heat radiating member 220 and the screws 230 are inserted therein.

The fixing member 130 may be fixed to the casing 210. Furthermore, the fixing member 130 may be a part of the casing 210. As shown in FIG. 13, at least a part of the surface of the upper case 211 facing the electronic component 120 is formed by the fixing member 130H. In this case, after the substrate 110 to which the electronic component 120 is bonded is stored in the lower case 212, the upper case 211 including the fixing member 130 H is covered, whereby the electronic component mounting body 100 is accommodated in the housing 210 and the electronic component 120 is fixed. It can be performed.

When a part of the upper case 211 is configured by the fixing member 130H, the fixing member 130H preferably includes a support wall 1304 standing in the direction D2, as shown in FIG. 7B. However, in this case, unlike FIG. 7B, the fixing member 130H includes a cover 1305 disposed on the same plane as the main surface 130x or the sub surface 130y. That is, the fixing member 130 H includes a support wall 1304 and a cover 1305 that can function as the cap 140 of the electronic component 120. Therefore, when the fixing member 130H is used, in the step of covering the upper case 211, the step of covering the electronic component 120 with the cap 140 is performed together with the housing of the electronic component mounting body 100 in the housing 210 and the fixing of the electronic component 120. . Therefore, this aspect further reduces the number of steps.

As described above, the electronic control device 200 according to the embodiment of the present invention may include the electronic component mounting body 100 described in (1) and the casing 210 that covers the electronic component mounting body 100.

Further, in the electronic control device 200, the fixing member 130H may be fixed to the housing 210.

Further, the electronic control device 200 may include an electronic component mounting body 100 and a casing 210 that covers the electronic component mounting body 100, and the fixing member 130H may constitute a part of the casing 210.

(3) Servo Motor The electronic control device 200 is particularly suitable as a servo motor control device. The servo motor according to the embodiment of the present invention includes an electric motor and an electronic control device 200. The servo motor is used for controlling the mechanical position and angle in the servo mechanism. The servo motor control device feeds back information on the rotation angle and rotation speed of the electric motor to control the driving of the electric motor. For this reason, in the control device, it is important from the viewpoint of improving accuracy to suppress the vibration of the electronic component mounted on the board. Since the electronic control device 200 according to the embodiment of the present invention is used as a control device for the servo motor 300 in order to effectively suppress vibration of the electronic component 120, the accuracy is improved.

FIG. 14 is a block diagram illustrating the configuration of the servo motor 300 according to the embodiment of the present invention. In the servo motor 300, the electronic control unit 200 is a digital / analog (D / A) converter (not shown) that constitutes a servo amplifier 320, as shown in FIG. The servo amplifier 320 controls the electric motor 330 based on a pulse train output from a PLC (Programmable Logic Controller) 310 and a feedback pulse from the electric motor 330.

The type of the electric motor 330 is not particularly limited, and a conventionally known electric motor can be used as the electric motor of the servo motor. Examples of the motor 330 include a commutator motor, an induction motor, and a synchronous motor. A position detector (not shown) such as a rotation angle sensor (resolver) and an encoder is attached to the electric motor 330. The electronic control device 200 controls the driving of the electric motor 330 based on the information obtained from the position detector. Various machines 400 such as industrial machines are operated by the electric motor 330.

As described above, the servo motor 300 according to the embodiment of the present invention may include the electric motor 330 and the electronic control device 200 described in (2).

(Fixing member)
Hereinafter, the size and material of the fixing member 130 (including 130A to 130H) and the type of the electronic component 120 will be described.

The size of the fixing member 130 is not particularly limited, and may be set as appropriate according to the size and number of electronic components 120 inserted into the insertion port 1301. In FIG. 1 and FIG. 3A, eight insertion ports 1301 are formed in the fixing member 130 and the eight electronic components 120 are fixed together. However, the present invention is not limited to this. One fixing port 1301 may be formed in the fixing member 130, or two or more insertion ports 1301 may be formed.

The material of the fixing member 130 is not particularly limited. Among these, at least the peripheral portion 130p, in particular, the contact portion where the fixing member 130 contacts the electronic component 120 (for example, the end surface 130t, the protrusion 1302, the tongue piece, etc.) in that the electronic component 120 can be securely fixed without being damaged. 1303 or the inner wall 1304t) is preferably formed of a flexible material. Examples of the material having flexibility include high-density polyethylene. In this case, the material of the peripheral portion 130p or the contact portion of the fixing member 130 may be different from the material of other portions. Further, when the material of the peripheral portion 130p or the contact portion of the fixing member 130 is the same as the material of other portions, the peripheral portion 130p of the fixing member 130 or the peripheral portion 130p of the fixing member 130 is used from the viewpoint of suppressing vibration and damage to the electronic component 120. The contact portion may be thinner than the other portions.

(Electronic parts)
The electronic component 120 mounted on the substrate 110 is not particularly limited, and may be appropriately selected from electronic components necessary for the electronic control device 200. Examples of the electronic component 120 include a capacitor and a relay (relay). Among these, the fixing member 130 according to the embodiment of the present invention is useful for improving the vibration resistance of the high-profile electronic component 120. The tall electronic component is, for example, an electronic component in which the height HE from the mounting surface 110x is larger than the short diameter of the electronic component 120 viewed from the normal direction of the mounting surface 110x. The minor axis of the electronic component 120 connects two intersections of the straight line and the outer edge when a straight line passing through a point on the outer edge and the center of the electronic component 120 viewed from the normal direction of the mounting surface 110x is drawn. The length of the shortest straight line.

When the fixing member 130 includes the support wall 1304 and the cover 1305, the fixing member 130 is suitable for fixing a capacitor as the electronic component 120. This is because the number of parts and the number of processes can be reduced because the fixing member 130 also functions as a capacitor cap 140. The capacitor is not particularly limited, and examples thereof include a film capacitor, a tantalum capacitor, and an aluminum electrolytic capacitor. Although FIG. 1 shows a case where a plurality of cylindrical electronic components 120 are arranged on the electronic component mounting body 100, the shape and number of the electronic components 120 are not limited to those in FIG.

As described above, in the electronic component mounting body 100 according to the embodiment of the present invention, the height HE from the mounting surface 110x of the electronic component 120 is larger than the minor axis of the electronic component 120 as viewed from the normal direction of the mounting surface 110x. Larger is preferred.

Further, the electronic component 120 may be a capacitor.

The electronic component mounted on the electronic component mounting body of the present invention is excellent in vibration resistance. Therefore, the electronic component mounting body according to the present invention is suitable as an electronic control device, particularly a servo motor control device.

DESCRIPTION OF SYMBOLS 100 Electronic component mounting body 110 Board | substrate 110x Mounting surface 120 Electronic component 130,131,132,130A, 130B, 130C, 130D, 130E, 130F, 130G, 130H Fixing member 130x Main surface 130y Subsurface 130p Peripheral portion 130t End surface 130ts Inclined surface 130tv Vertical surface 1301 Insertion slot 1302 Protrusion 1303 Tongue piece 1303s Slit 1304 Support wall 1304t Inner wall 1305 Cover 140 Cap 200 Electronic control unit 210 Housing 211 Upper case 212 Lower case 220 Heat radiation member 230 Screw 300 Servo motor 310 PLC
320 Servo amplifier 330 Electric motor 400 Various machines

Claims

A substrate having a mounting surface;
Electronic components mounted on the mounting surface of the substrate;
An insertion port for inserting the electronic component and a peripheral portion that is disposed so as to surround the insertion port and presses and fixes the electronic component inserted into the insertion port while being spaced apart from the mounting surface And a fixing member having
An electronic component mounting body comprising:
When the height of the electronic component from the mounting surface is HE,
The fixing member fixes the electronic component at a position separated from the mounting surface by 1/2 or more of the height HE;
The electronic component mounting body according to claim 1.
The height of the electronic component from the mounting surface is HE, and the n pieces (n is a natural number of 2 or more) of the fixed pieces arranged at a predetermined interval in a direction perpendicular to the mounting surface of the substrate. When equipped with a member,
The fixing member fixes the electronic component at a position separated from the mounting surface by 1 / (n + 1) or more of the height HE.
The electronic component mounting body according to claim 1.
The peripheral portion has an end surface including an inclined surface that narrows an opening area of the insertion port from a main surface facing the mounting surface toward a sub surface located on the opposite side of the main surface;
The electronic component is pressed by a part of the end surface and fixed to the fixing member.
The electronic component mounting body according to any one of claims 1 to 3.
When viewed from the normal direction of the mounting surface, the shape of the insertion port is different from the shape of the electronic component,
The electronic component is pressed by making point contact with the peripheral edge, and is fixed to the fixing member.
The electronic component mounting body according to any one of claims 1 to 3.
The peripheral portion has a plurality of protrusions protruding toward the insertion port side,
The electronic component is pressed by the protrusion and fixed to the fixing member.
The electronic component mounting body according to any one of claims 1 to 3.
The peripheral portion has a plurality of tongue pieces divided by slits,
The electronic component is pressed by the tongue piece and fixed to the fixing member.
The electronic component mounting body according to any one of claims 1 to 3.
The peripheral portion further includes a support wall that is erected in a direction from the sub surface toward the main surface along at least a part of the periphery of the insertion port.
The electronic component mounting body according to any one of claims 4 to 7.
The peripheral portion further includes a support wall that is erected in a direction from the main surface toward the sub surface along at least part of the periphery of the insertion port.
The electronic component mounting body according to any one of claims 4 to 7.
The fixing member has a cover that extends from the support wall and covers the insertion port.
The electronic component mounting body according to claim 9.
The height HE of the electronic component from the mounting surface is larger than the minor axis of the electronic component viewed from the normal direction of the mounting surface.
The electronic component mounting body according to any one of claims 1 to 10.
The electronic component is a capacitor.
The electronic component mounting body according to any one of claims 1 to 11.
The electronic component mounting body according to any one of claims 1 to 12,
A housing covering the electronic component mounting body;
An electronic control device.
The fixing member is fixed to the housing;
The electronic control device according to claim 13.
The electronic component mounting body according to claim 8,
A housing that covers the electronic component mounting body,
The fixing member constitutes a part of the housing;
Electronic control device.
An electric motor,
An electronic control device according to any one of claims 13 to 15,
Servo motor equipped with.