JP3972682B2 - Electronic component storage unit - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an electronic component storage unit suitable for storing large electronic components such as film capacitors and coils in an ECU housing.
[0002]
[Prior art]
Conventionally, when storing a large electronic component such as a film capacitor in an ECU housing, it is known to use a storage case as shown in FIG.
[0003]
The storage case 3 has a plurality of storage portions 4 formed in a container shape so as to cover the four side surfaces and the bottom surface of the large electronic component 2. The large electronic component 2 is stored in each of the plurality of storage units 4. A bus bar (metal conductor) 5 is integrally fixed to the storage case 3 by insert molding or the like. The lead terminals 6 of the large electronic components 2 respectively stored in the plurality of storage units 4 are joined to the bus bar 5 by means such as resistance welding and are electrically connected.
[0004]
After performing such electrical connection, the storage case 3 is accommodated in a predetermined position in the ECU housing 1. As shown in FIG. 4, the ECU housing 1 has a recess corresponding to the outer shape of the storage case 3. Therefore, the large electronic component 2 is fixed and held in the ECU housing 1 by inserting the storage case 3 into the recess.
[0005]
[Problems to be solved by the invention]
However, according to the conventional large-sized electronic component storage structure shown in FIG. 4, the ECU housing 1 has a size of the large-sized electronic component 2 and a wall thickness of the storage case 3 with respect to the recess for storing the large-sized electronic component 2. It is necessary to make it the size which added minutes. Therefore, when a restriction is set on the size of the ECU housing 1 due to the installation location of the ECU housing 1 and the like, it may be difficult to fit the restricted size.
[0006]
As countermeasures against this problem, it is conceivable to reduce the thickness of the walls of the ECU housing 1 and the storage case 3, but there is a limit to the reduction of the thickness due to the strength and the like. It is not a countermeasure.
[0007]
The present invention has been made in view of the above points, and an object of the present invention is to provide an electronic component storage unit capable of suppressing an increase in housing size due to a storage case for storing electronic components. .
[0008]
[Means for Solving the Problems]
In order to achieve the above object, an electronic component storage unit according to claim 1,
Electronic components,
A circuit board on which an electronic circuit is formed;
An electronic component storage unit comprising a housing for accommodating an electronic component and a circuit board,
The housing has a concave portion for accommodating the electronic component, and the portion where the concave portion is formed protrudes outward from the storage portion of the circuit board,
The electronic component has protrusions formed on two opposing wall surfaces ,
One surface of a pair of holding portions having a groove portion to be fitted with a protrusion formed on two opposing wall surfaces and a plurality of surfaces perpendicular to both wall surfaces between the two opposing wall surfaces of the electronic component And a storage case comprising a connecting portion that extends in parallel with and connects the pair of holding portions ,
The storage case stores the electronic component in a state in which only three surfaces of the electronic component are surrounded by the pair of holding portions and the connecting portion, and the electronic component is stored in the recess in the housing in a state of being stored in the storage case. It is characterized by being.
[0009]
Conventionally, a case storing a cube-shaped electronic component has been formed into a container shape surrounding the bottom surface and four side surfaces of the electronic component. For this reason, there are cases around the five surfaces of the electronic component, and the influence of the area occupied by the thickness of the case in the storage location of the electronic component is large.
[0010]
On the other hand, in the electronic component storage unit according to claim 1, since the storage case includes a pair of holding portions and a connecting portion that connects the pair of holding portions, the storage case has three surfaces of the electronic component. It only surrounds. As a result, the storage case can be reduced in size, and can be stored in a narrower space in the housing when stored in the housing.
[0011]
Further, the storage case surrounds only three surfaces of the electronic component. However, the holding portion of the storage case has a groove portion that is fitted to a protrusion formed on two opposing wall surfaces of the electronic component. Therefore, the storage case surrounds only three surfaces of the electronic component, but has a holding performance equivalent to that of a conventional container-shaped storage case.
[0012]
According to a second aspect of the present invention, the storage case has a plurality of storage units for storing electronic parts including a pair of holding units and a connection unit, and the plurality of storage units are connected to each other. May be. As a result, a plurality of electronic components can be stored together in a common storage case, so that assembly into the housing is facilitated.
[0013]
According to a third aspect of the present invention , the connecting portion is provided so as to extend in parallel with the surface of the electronic component facing the housing portion of the circuit board, and has a size corresponding to only a part of the surface of the electronic component. The formation position is preferably set above the recess . Since the connecting portion is mainly used to connect the pair of holding portions, the connecting portion does not need to cover the entire surface of the electronic component. For this reason, the size of the connecting portion is formed so as to face only a part of the surface of the electronic component facing the housing part of the circuit board , and the formation position is set higher than the concave portion , thereby further In addition, it is possible to reduce the storage space for the electronic components and the storage case in the housing.
[0014]
According to a fourth aspect of the present invention, a bus bar electrically connected to an electronic component is fixed to the storage case, and it is preferable to wire-connect the electronic circuit formed on the circuit board and the bus bar. If it does in this way, the connection of the electronic component accommodated in the housing and the electronic circuit formed in the circuit board can be performed easily. In particular, when there are a plurality of electronic components to be stored, the connection can be made in advance by the bus bar, so that the number of connection points that are made after housing is reduced.
[0015]
In the electronic component storage unit according to claim 5, in the holding portion, a receiving portion that receives the bottom surface of the protrusion is formed at the lower end, and the bottom surface position of the receiving portion is equal to the bottom surface position of the electronic component. The bottom surface position of the protrusion is set to a position higher than the bottom surface position of the electronic component. This is preferable because the height dimension of the electronic component including the storage case can be shortened.
[0019]
[0020]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[0021]
(First embodiment)
1A is a perspective view showing a configuration of a main part of the electronic component storage unit according to the present embodiment, FIG. 1B is a side view of the electronic component storage unit shown in FIG. FIG. 3C is a top view of the electronic component storage unit shown in FIG.
[0022]
1A to 1C, a housing 11 accommodates an electronic component 12 and a circuit board 17 on which an electronic circuit is formed by various elements and wirings. A recess 11 a is formed to accommodate the component 12. The housing 11 can be constituted by, for example, aluminum die casting.
[0023]
The electronic component 12 is a large-sized component such as a film capacitor or a coil, for example, and is housed in the housing 11 together with the storage case 13 in a state where a plurality of electronic components are stored in the storage case 13. In this way, if a plurality of electronic components 12 are stored together in the common storage case 13, assembly into the housing 11 can be easily performed.
[0024]
The storage case 13 is made of a resin material, and a bus bar (metal conductor) 15 is integrally fixed by insert molding or the like. The plurality of electronic components 12 stored in the storage case 13 have lead terminals 16 for connection to the outside, and the lead terminals 16 are joined to the bus bar 15 by means such as resistance welding. As a result, the plurality of electronic components 12 are electrically connected by the bus bar 15 before being housed in the housing 11.
[0025]
After such electrical connection is made, the storage case 13 is accommodated in the recess in the housing 11. Thereby, the electronic component 12 is fixed and held in the housing 11 by the storage case 13.
[0026]
A circuit board 17 on which an electronic circuit is formed is also housed in the housing 11, and lands 21 that are electrodes on the circuit board 17 and the bus bar 15 are connected by wires 18. As described above, the electrical connection of the electronic component 12 is performed using the bus bar 15 in advance, whereby the wiring after the electronic component 12 is accommodated in the housing 11 can be easily connected.
[0027]
Next, the storage case 13 and the electronic component 12 stored in the storage case 13 which are characteristic parts of the present embodiment will be described in detail.
[0028]
As shown in FIGS. 1A and 1C, the electronic component 12 has a protrusion 12a extending from the bottom surface to the top surface at the approximate center of each of the two opposing side surfaces. The lead terminal 16 of the electronic component 12 is taken out from the upper surface of the protrusion 12a.
[0029]
The storage case 13 includes a pair of holding portions 19 that respectively hold two opposing side surfaces of the electronic component 12 and a connecting portion 20 that connects the pair of holding portions 19. In the example described in FIGS. 1A to 1C, the holding unit 19 of the storage case 13 existing between the two electronic components 12 is used to store the two electronic components 12 together in the storage case 13. Are connected and configured as a single unit.
[0030]
A groove portion 19 a is formed in the holding portion 19 of the storage case 13 corresponding to the protrusions 12 a formed on the two side surfaces of the electronic component 12. By fitting the protrusion 12a of the electronic component 12 into the groove 19a, the electronic component 12 can be securely fixed in the storage case 13.
[0031]
The protrusion 12a has the same height as the side surface from the bottom surface to the top surface of the electronic component 12, and the holding portion 19 is formed with a receiving portion 19b that receives the bottom surface of the protrusion 12a at its lower end. ing. For this reason, as shown in FIG. 1B, the bottom surface position of the holding portion 19 is lower than the bottom surface position of the electronic component 12 by the thickness of the receiving portion 19 b. However, the protrusion 12a formed on the side surface of the electronic component 12 does not necessarily have the same height as the side surface. Therefore, the protrusion 12a may be formed so that the bottom surface position of the protrusion 12a is higher than the bottom surface position of the electronic component 12. In this case, even when the receiving portion 19b that receives the bottom surface of the protrusion 12a is formed on the holding portion 19, the bottom surface position of the holding portion 19 (receiving portion 19b) is equivalent to the bottom surface position of the electronic component 12. Thus, setting the bottom surface position of the protrusion 12a and the thickness of the receiving portion 19b of the holding portion 19 is preferable because the height dimension of the electronic component 12 including the storage case 13 can be shortened.
[0032]
As described above, the projection case 12a is formed on the two opposing side surfaces of the electronic component 12, and the storage case 13 has the holding portion 19 having the groove portion 19a fitted to the projection 12a, thereby storing the storage case. 13, it is possible to securely fix the electronic component 12 in the storage case 13 only by surrounding the three surfaces of the electronic component 12. Thereby, the storage case 13 can be reduced in size, and can be accommodated in a narrower space in the housing 11 when accommodated in the housing 11.
[0033]
Further, the connecting portion 20 of the storage case 13 has a size facing only a part of the surface of the electronic component 12 extending in parallel, and the formation position thereof is not in the recess 11 a of the housing 11. , Above the recess 11a. Thereby, the width of the concave portion 11a of the housing 11 can be set substantially to the thickness of the electronic component 12 without considering the thickness of the storage case 13 at all.
[0034]
In this way, by forming the size of the connecting portion 20 so as to face only a part of the surface of the electronic component 12, the connecting portion 20 can be routed so as not to interfere with the housing 11. Therefore, it is possible to further reduce the accommodation space for the electronic component 12 and the storage case 13 in the housing 11.
[0035]
(Second Embodiment)
Next, a second embodiment will be described. This embodiment is effective when it is difficult to change the shape of the electronic component 12, such as by forming protrusions 12a on the two side surfaces of the electronic component 12, as in the first embodiment.
[0036]
FIG. 2 is a perspective view showing a main configuration of an electronic component storage unit according to the second embodiment. In FIG. 2, the hexahedral electronic component 32 is stored in a storage case 33. The storage case 33 includes a side surface holding portion 35 that holds each of the four side surfaces of the electronic component 32, and a bottom surface holding portion 36 that connects the side surface holding portions 35 and holds the bottom surface of the electronic component 32. . The bottom surface holding part 36 is formed in a substantially cross shape so as to connect the four side surface holding parts 35. Thus, the storage case 33 is configured to surround a total of five surfaces including the bottom surface and the four side surfaces of the electronic component 32.
[0037]
The four side surface holding portions 35 of the storage case 33 do not hold the entire side surface of the electronic component 32 but only the vicinity of the center of the side surface, and the side surface holding portions 35 are separated from each other.
[0038]
The storage case 33 configured as described above is accommodated in the housing 31 in a state where electronic components are stored. In the housing 31, groove portions 34 having a size that can be fitted to the side surface holding portion 35 are provided at two positions of the corner portion of the housing 31 at a position corresponding to the side surface holding portion 35. The groove 34 is also used as a breathing groove for ensuring ventilation inside and outside the housing 31.
[0039]
The two side surface holding portions 35 of the storage case 33 are fitted into two groove portions 34 formed in the corner portion of the housing 31, and the storage case 33 is fixed in the housing 31.
[0040]
Thus, in this embodiment, since the side surface holding portion 35 of the storage case 33 is fitted into the groove portion 34 of the housing 31, the storage case 33 surrounds the five surfaces of the electronic component 32, and The space for housing the component 32 and the storage case 33 can be made as compact as possible.
[0041]
Further, in the present embodiment, the side surface holding portion 35 of the storage case 33 is separated from the side surface holding portion 35 that holds the other side surface of the electronic component 32, and only near the center that is a part of the side surface of the electronic component 32. Is provided. Therefore, the groove 34 formed on the inner surface of the housing 31 does not need to be formed over a very large area. For this reason, even if the thickness of the housing 31 in the groove part 34 becomes thin, the influence with respect to the intensity | strength of the housing 31 can be made small. Therefore, the electronic component 32 and the storage case 33 can be accommodated in a narrower space while maintaining the strength of the housing 31.
[0042]
In the second embodiment described above, the two groove portions 34 are formed in the corner portion of the housing 31, but the groove portions 34 may be formed only in one portion as shown in FIG. Moreover, when forming the groove part 34 in two places, it does not necessarily need to form in the corner part of the housing 31, for example, as shown to Fig.1 (a)-(c), the housing 31 has the electronic component 32 and the storage case 33. As shown in FIG. In the case of having a recess for accommodating, two groove portions can be formed on the side surface holding portion 35 that holds the two opposite side surfaces of the electronic component 32.
[0043]
Although not shown in FIG. 2, as in the first embodiment, a bus bar can be integrally attached to the storage case 33 in the second embodiment, or a plurality of electronic components can be stored together. A plurality of storage units may be provided.
[Brief description of the drawings]
1A is a perspective view showing a configuration of a main part of an electronic component storage unit according to a first embodiment, FIG. 1B is a side view of the electronic component storage unit shown in FIG. 1A, and FIG. It is a top view of the electronic component storage unit shown to (a).
FIG. 2 is a perspective view illustrating a configuration of a main part of an electronic component storage unit according to a second embodiment.
FIG. 3 is a perspective view showing a modification of the electronic component storage unit according to the second embodiment.
FIG. 4 is a perspective view showing a configuration of a conventional electronic component storage unit.
[Explanation of symbols]
11, 31 Housing 12, 32 Electronic parts 13, 33 Storage case 15 Bus bar 16 Lead terminal 17 Circuit board 18 Wire

Claims (5)

Electronic components,
A circuit board on which an electronic circuit is formed;
An electronic component storage unit comprising a housing for accommodating the electronic component and the circuit board,
The housing has a concave portion for accommodating the electronic component, and the portion where the concave portion is formed protrudes outward from the accommodating portion of the circuit board,
The electronic component has protrusions formed on two opposing wall surfaces ,
A pair of holding portions having a groove portion to be fitted to a protrusion formed on the two opposing wall surfaces, and one of a plurality of surfaces perpendicular to both wall surfaces between the two opposing wall surfaces of the electronic component A storage case comprising a connecting portion that extends in parallel with one surface and connects the pair of holding portions ;
The storage case stores the electronic component in a state in which only the three surfaces of the electronic component are surrounded by the pair of holding portions and the connecting portion, and the electronic component is stored in the storage case. The electronic component storage unit is housed in a recess in the housing .   The storage case includes a plurality of storage units for storing the electronic component including the pair of holding units and the connection unit, and the plurality of storage units are connected to each other. Item 2. The electronic component storage unit according to Item 1. The connecting part, together with the provided so as to extend in parallel to the surface of the electronic component facing the housing portion of the circuit board, have a size corresponding to only a portion of the surface of the electronic component, the formation position The electronic component storage unit according to claim 1, wherein the electronic component storage unit is set above the recess . In the storage case, a bus bar electrically connected to the electronic component is fixed,
The electronic component storage unit according to any one of claims 1 to 3, wherein an electronic circuit formed on the circuit board and the bus bar are wire-connected. In the holding part, a receiving part for receiving the bottom surface of the protruding part is formed at the lower end part,
  The bottom surface position of the protrusion is set to be higher than the bottom surface position of the electronic component so that the bottom surface position of the receiving portion is equivalent to the bottom surface position of the electronic component. 5. The electronic component storage unit according to any one of 4 above.

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