JP6482124B2 - Substrate storage structure - Google Patents

Description

  The present invention relates to a substrate storage structure.

  A technology related to waterproofing in a storage structure in which a substrate on which electronic components are mounted is stored has been developed. An example of a technique for waterproofing a substrate housed in a case with a potting material injected into the case is a technique described in Patent Document 1.

JP 2005-160206 A

  For example, in a storage structure for storing a substrate on which electronic components are mounted, such as an ECU box in which an ECU (Electronic Control Unit) is stored, the waterproof structure when the storage structure is submerged and immersed, and the storage structure In some cases, it is required to relieve the internal pressure when the inside is hot.

  Here, for example, in the technique described in Patent Document 1, by using urethane resin as a potting material, waterproofing of a substrate stored in the storage structure and heat dissipation of heat generated from the substrate are achieved. Therefore, for example, by using a potting material as in the technique described in Patent Document 1, there is a possibility that the substrate can be waterproofed and the internal pressure of the storage structure can be prevented from increasing due to heat dissipation.

  However, when a potting material is used as in the technique described in Patent Document 1, for example, the potting material increases the weight of the storage structure, and the potting material may increase the cost.

  The present invention has been made in view of the above problems, and an object of the present invention is to achieve both the waterproof property when the storage structure is immersed and the release of the internal pressure in the storage structure. It is an object of the present invention to provide a new and improved substrate storage structure.

  In order to achieve the above object, according to an aspect of the present invention, a housing having an opening, a housing portion in which a substrate on which an electronic component is mounted is housed, and the substrate housed in the housing portion And a connector mounted on the housing so as to close the opening, and a ventilation portion is formed between the mounted housing and the connector. A substrate storage structure is provided.

  With such a configuration, it is possible to achieve both the waterproofness when the storage structure is immersed and the release of the internal pressure in the storage structure.

  The ventilation portion may be formed in a portion corresponding to the storage portion of the housing.

  The storage portion includes a first rail portion and a second rail portion for slidingly storing the substrate, and a portion corresponding to the storage portion corresponds to the first rail portion. Or a portion corresponding to the second rail portion.

  The connector is mounted on a mounting surface formed on the housing, and the mounting surface is not formed on one of the first rail portion and the second rail portion. It may be formed.

  Further, the ventilation portion may be formed by further forming a notch in a portion of the connector corresponding to the housing portion of the housing.

  ADVANTAGE OF THE INVENTION According to this invention, coexistence with waterproofness at the time of a storage structure being immersed and releasing the internal pressure in a storage structure can be aimed at.

It is explanatory drawing for demonstrating an example of the storage structure of a board | substrate. It is explanatory drawing for demonstrating an example of the storage structure of a board | substrate. It is explanatory drawing for demonstrating an example of the problem which may arise in the storage structure of the board | substrate shown in FIG. It is explanatory drawing which shows an example of a structure of the storage structure of the board | substrate which concerns on embodiment of this invention. It is explanatory drawing for demonstrating an example of the storage structure of the board | substrate which concerns on embodiment of this invention. It is explanatory drawing for demonstrating the other example of the storage structure of the board | substrate which concerns on embodiment of this invention.

  Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the present specification and drawings, components having substantially the same functional configuration are denoted by the same reference numerals, and redundant description is omitted.

(Substrate housing structure according to an embodiment of the present invention)
[1] Example of Configuration of Substrate Storage Structure Before describing the configuration of the substrate storage according to the embodiment of the present invention, an example of the configuration of the substrate storage structure will be described.

  FIG. 1 is an explanatory diagram for explaining an example of a substrate storage structure 10. FIG. 1A is a perspective view for explaining an example of the storage structure 10. 1B is a perspective view for explaining an example of the housing 12 constituting the storage structure 10, and FIG. 1C is a side view for explaining an example of the connector 14 constituting the storage structure 10. It is.

  1C also shows a substrate 50 that is housed in the housing structure 10 and on which electronic components are mounted. Here, as the substrate 50, for example, a substrate on which an electronic component related to control of a moving body such as a vehicle such as an ECU is mounted. In addition, the board | substrate 50 is not restricted to the example shown above, The board | substrate with which the electronic component which has arbitrary functions is mounted may be sufficient.

  The storage structure 10 includes, for example, a housing 12 and a connector 14.

[1-1] Housing 12
As shown in B of FIG. 1, the housing 12 has, for example, an opening and a storage 16.

  The opening is a portion where the connector 14 is attached to the housing 12, and the connector 14 is attached to the opening of the housing 12 as shown in FIG. 1A and FIG.

  FIG. 2 is an explanatory diagram for explaining an example of the substrate storage structure 10 and shows a front view of the housing 12 shown in FIG. 1.

  As shown in FIG. 2, mounting surfaces 24 </ b> A and 24 </ b> B for mounting the connector 14 are provided in the opening of the housing 12. The housing 12 and the connector 14 are mounted by, for example, joining the connector 14 to the mounting surfaces 24A and 24B by an arbitrary method such as adhesive or welding.

  The storage unit 16 serves to store the substrate 50 in the housing 12, and includes, for example, a substrate rail for slidingly storing the substrate 50. More specifically, for example, as shown in FIG. 2, the storage portion 16 includes a first rail portion 16A and a second rail portion 16B, and the board rail includes the first rail portion 16A and the second rail portion 16B. Rail portion 16B.

  The storage unit 16 has a board rail as shown in FIG. 1B and FIG. 2, whereby the board 50 is stored in the housing 12.

[1-2] Connector 14
As illustrated in FIG. 1C, the connector 14 includes, for example, a connector portion 18, a mounting portion 20, and a terminal 22. The connector 14 is attached to the housing 12 so as to close the opening of the housing 12.

  The connector 18 is connected to a cable or the like for electrical connection with an external device. Although FIG. 1 illustrates an example in which the number of pins of the connector unit 18 is 8, the number of pins of the connector unit 18 is not limited to the example illustrated in FIG.

  The mounting portion 20 is a member for mounting on the housing 12, and the mounting portion 20 of the connector 14 is mounted on the opening of the housing 12 as shown in FIG. 1A and FIG. For example, as shown in FIG. 1A and FIG. 1C, the mounting portion 20 is longer than the connector portion 18 in both the width direction and the height direction, and is shaped like a collar when viewed from the connector portion 18. Have

  Since the mounting portion 20 as shown in FIG. 1 is provided on the connector 14, it is not necessary to separately provide a lid member (so-called lid) when the connector 14 is mounted on the housing 12. Therefore, since the number of parts of the storage structure is reduced by providing the mounting portion 20 on the connector 14, the cost related to the parts of the storage structure 10 and the cost related to the assembly of the storage structure 10 can be reduced.

  The terminal 22 serves to electrically connect the board 50 accommodated in the accommodating portion 16 and the connector portion 18. The connector 14 and the board 50 are electrically connected by the terminal 22.

  The storage structure 10 has a configuration shown in FIG. 1, for example.

  In the storage structure 10 having the configuration shown in FIG. 1, the board 50 is stored in the housing 12 by mounting the mounting portion 20 of the connector 14 in the opening of the housing 12. Therefore, the structure shown in FIG. 1 realizes a board storage structure that can reduce the cost of components of the storage structure and the cost of assembly of the storage structure.

[2] Problems that may occur in the storage structure 10 illustrated in FIG. 1 As described above, in the storage structure 10 illustrated in FIG. 1, the mounting portion 20 of the connector 14 has the mounting surface 24 </ b> A formed in the opening of the housing 12. It is attached to 24B.

  Here, the mounting surfaces 24 </ b> A and 24 </ b> B formed on the housing 12 are not provided in the board rail portion which is the storage portion 16 as shown in FIG. 2. Therefore, in the storage structure 10 in which the connector 14 is mounted on the housing 12, a ventilation portion that ventilates between the housing 12 and the connector 14 by not forming two mounting surfaces in a portion corresponding to the storage portion 16. Will be formed in two places.

  Therefore, for example, when the storage structure 10 is submerged and the storage structure 10 is immersed, water may enter the storage structure 10 due to the two ventilation portions.

  FIG. 3 is an explanatory diagram for explaining an example of a problem that may occur in the substrate storage structure 10 shown in FIG. FIG. 3 shows a state in which the storage structure 10 is submerged and tilted obliquely.

  As shown in FIG. 3, in a state where the storage structure 10 is submerged and inclined obliquely, the water pressure A applied to one ventilation portion in the storage structure 10 is different from the water pressure B applied to the other ventilation portion. Therefore, in the example of FIG. 3, air (an example of gas) existing inside the storage structure 10 is released from the one ventilation portion from the water pressure A <water pressure B, and as a result, the storage structure 10 is discharged from the other ventilation portion. Water will infiltrate inside.

  Therefore, the substrate storage structure 10 shown in FIG. 1 cannot realize the waterproof property when the storage structure 10 is immersed.

  Here, as one method for realizing waterproofing when the substrate storage structure is immersed, it is conceivable to block two ventilation portions formed in the storage structure 10 shown in FIG.

  However, when the two ventilation portions formed in the storage structure 10 are closed, when the inside of the storage structure 10 becomes high temperature due to the heat generated by the substrate 50 or external heat, the inside of the storage structure 10 The internal pressure cannot be released. Therefore, when the two ventilation portions formed in the storage structure 10 are blocked, there is a possibility that the electronic components mounted on the substrate 50 stored in the storage structure 10 or the storage structure 10 is destroyed. is there.

  Therefore, even if the storage structure 10 shown in FIG. 1 or one method for realizing the waterproof property when the storage structure is immersed, the waterproof property when the storage structure is immersed, and the storage structure It is impossible to reconcile with releasing the internal pressure.

[3] Example of Configuration of Substrate Housing Structure According to Embodiment of the Present Invention Next, an example of the configuration of the substrate storage structure according to the embodiment of the present invention will be described.

  FIG. 4 is an explanatory diagram showing an example of the configuration of the substrate storage structure 100 according to the embodiment of the present invention. 4A is a perspective view for explaining an example of the storage structure 100. FIG. 4B is a perspective view for explaining an example of the housing 102 that constitutes the storage structure 100, and FIG. 4C is a side view for explaining an example of the connector 104 that constitutes the storage structure 100. It is.

  4C also shows a substrate 200 that is housed in the housing structure 100 and on which electronic components are mounted. Here, as the substrate 200, for example, a substrate on which an electronic component related to control of a moving body such as a vehicle such as an ECU is mounted. The substrate 200 is not limited to the example described above, and may be a substrate on which electronic components having an arbitrary function are mounted.

  4 shows a storage structure 100 having the same appearance as the storage structure 10 shown in FIG. 1 for comparison with the storage structure 10 shown in FIG. The appearance of the substrate storage structure according to the embodiment of the present invention is not limited to the example illustrated in FIG. 4, and may be any external appearance that can have the same function as the storage structure 100 described later.

  The storage structure 100 includes, for example, a housing 102 and a connector 104.

[3-1] Housing 102
As illustrated in C of FIG. 4, the housing 102 includes, for example, an opening and a storage unit 106.

  The opening is a portion where the connector 104 is attached to the housing 102, and the connector 104 is attached to the opening of the housing 102 as shown in FIG. 4A and FIG. 4B.

  FIG. 5 is an explanatory diagram for explaining an example of the substrate storage structure 100 according to the embodiment of the present invention, and shows a front view of the housing 102 shown in FIG. 4.

  As shown in FIG. 5, a mounting surface 114 for mounting the connector 104 is provided in the opening of the housing 102. The housing 102 and the connector 104 are mounted by joining the connector 104 to the mounting surface 114 by an arbitrary method such as adhesive or welding.

  The storage unit 106 serves to store the substrate 200 in the housing 102 and includes, for example, a substrate rail for slidingly storing the substrate 200. More specifically, for example, as shown in FIG. 5, the storage unit 106 includes a first rail unit 106A and a second rail unit 106B, and the board rail includes the first rail unit 106A and the second rail unit 106B. Rail part 106B.

  Here, as shown in FIG. 5, in the housing 102, for example, a mounting surface 114 is formed in a portion corresponding to the first rail portion 106A, and a mounting surface is formed in a portion corresponding to the second rail portion 106B. 114 is not formed. The mounting surface 114 formed on the portion corresponding to the first rail portion 106A is realized, for example, by thickening the portion corresponding to the first rail portion 106A.

  For example, when the storage unit 106 has a board rail as shown in FIGS. 4B and 5, the board 200 is stored in the housing 102. Note that the storage unit according to the embodiment of the present invention is not limited to the board rail shown in FIGS. 4B and 5, and does not hinder the effects of the storage structure 100 described later, and can store the board. Any configuration may be used.

[3-2] Connector 104
As shown in FIG. 4C, the connector 104 includes, for example, a connector portion 108, a mounting portion 110, and a terminal 112. The connector 104 is attached to the housing 102 so as to close the opening of the housing 102.

  The connector 108 is connected to a cable or the like for electrical connection with an external device. 4 illustrates an example in which the number of pins of the connector unit 108 is eight, the number of pins of the connector unit 108 is not limited to the example illustrated in FIG.

  The mounting portion 110 is a member for mounting on the housing 102, and the mounting portion 110 of the connector 104 is mounted on the opening of the housing 102 as shown in FIG. 4A and FIG. 4B. For example, as shown in FIG. 4A and FIG. 4C, the mounting portion 110 is longer than the connector portion 108 in both the width direction and the height direction, and is shaped like a collar when viewed from the connector portion 108. Have

  Since the mounting portion 110 as shown in FIG. 4 is provided in the connector 104, it is not necessary to separately provide a lid member when mounting the connector 104 to the housing 102. Therefore, since the mounting portion 110 is provided in the connector 104, the number of parts of the storage structure is reduced, so that the cost related to the parts of the storage structure 100 and the cost related to the assembly of the storage structure 100 can be reduced.

  The terminal 112 serves to electrically connect the board 200 accommodated in the accommodating unit 106 and the connector unit 108. The connector 104 and the board 200 are electrically connected by the terminal 112.

  The storage structure 100 has a configuration shown in FIG. 4, for example.

[3-3] Effects of Storage Structure 100 Next, effects of the storage structure 100 shown in FIG. 4 will be described. The storage structure 100 has the following effects (1) and (2), for example, by the configuration shown in FIG.

(1) Coexistence of waterproofness when the storage structure is immersed and release of internal pressure in the storage structure As described above, in the storage structure 100 shown in FIG. It is mounted on a mounting surface 114 formed in the opening of the.

  Here, in the storage structure 100, for example, as illustrated in FIG. 5, the mounting surface 114 is not formed in a portion corresponding to the second rail portion 106 </ b> B of the storage portion 106. Therefore, in the storage structure 100 in which the connector 104 is mounted on the housing 102, the mounting surface 114 is not formed at a portion corresponding to the storage portion 106, so that a ventilation portion is provided between the housing 102 and the connector 104. Will be formed in one place.

  Therefore, for example, even if the storage structure 100 is submerged and the storage structure 100 is immersed, in the storage structure 100, the “path through which air in the storage structure escapes and water enters the storage structure” as shown in FIG. not exist. Therefore, the storage structure 100 has waterproofness when the storage structure is immersed.

  Here, for example, when the storage structure 100 is submerged and immersed, the ventilation portion is set to a size that receives the water pressure uniformly in a plane. The size of the ventilation portion is set experimentally so as to correspond to, for example, a waterproof capability (for example, 5 atmospheric pressure waterproof or 10 atmospheric pressure waterproof) provided to the storage structure 100.

  Further, since the ventilation structure is formed in one place in the storage structure 100, the internal pressure in the storage structure 100 can be maintained even when the inside of the storage structure 100 becomes high temperature due to the heat generated by the substrate 200 or external heat. It is possible to escape. Therefore, in the storage structure 100, an electronic component mounted on the substrate or the storage structure may be destroyed when one method for realizing waterproofness when the storage structure described above is immersed is used. Can be prevented.

  Therefore, the storage structure 100 can achieve both the waterproofness when the storage structure is immersed and the release of the internal pressure in the storage structure.

(2) Cost reduction effect The storage structure 100 having the configuration shown in FIG. 4 has waterproofness when the storage structure is immersed, as shown in (1) above. Therefore, when the storage structure 100 is used, the substrate 200 stored in the storage structure 100 does not need to be provided with a circuit (an immersion compatible circuit) for dealing with the case where the storage structure 100 is immersed. Therefore, by using the storage structure 100, the cost of the substrate 200 can be further reduced.

  In the storage structure 100, the board 200 is stored in the housing 102 by mounting the mounting portion 110 of the connector 104 in the opening of the housing 102. Therefore, the structure shown in FIG. 4 realizes a substrate storage structure that can reduce the costs associated with the components of the storage structure and the costs associated with the assembly of the storage structure.

[3-4] Modified Example of Substrate Storage Structure According to Embodiment of the Present Invention The substrate storage structure according to the embodiment of the present invention is not limited to the storage structure 100 shown in FIGS. The substrate storage structure according to the embodiment of the present invention includes, for example, a configuration according to a first modification shown in [3-4-1] below to a third modification shown in [3-4-3] below. It is also possible to take the structure which concerns on. Even when the configuration according to the modification shown below is adopted, the substrate storage structure according to the embodiment of the present invention can achieve the same effects as the storage structure 100 shown in FIGS. 4 and 5.

[3-4-1] First Modification In the board storage structure according to the embodiment of the present invention, for example, a mounting surface 114 is formed at a portion corresponding to the second rail portion 106B shown in FIG. The configuration may be such that the mounting surface 114 is not formed in a portion corresponding to one rail portion 106A. That is, the substrate storage structure according to the embodiment of the present invention can take a “configuration in which the ventilation portion is formed at one location corresponding to the storage portion of the housing”.

  More specifically, in the substrate storage structure according to the embodiment of the present invention, “the ventilation portion corresponds to the first rail portion 106A shown in FIG. 5 or the portion corresponding to the second rail portion 106B”. In addition, it is possible to adopt a configuration in which one place is formed. For example, as shown in FIG. 5, the ventilation portion is formed by not forming the mounting surface 114 on one of the first rail portion 106A and the second rail portion 106B.

[3-4-2] Second Modification The ventilation portion according to the embodiment of the present invention is housed in a housing like the storage structure 100 shown in FIG. 4 and the storage structure according to the first modification. It is not restricted to being formed in one place corresponding to the part.

  For example, the substrate storage structure according to the embodiment of the present invention may be configured such that one ventilation portion is formed at an arbitrary portion between the housing to be mounted and the connector. For example, by not forming one mounting surface at an arbitrary portion between the housing to be attached and the connector, one ventilation portion is formed at an arbitrary portion between the housing to be attached and the connector. Is realized.

[3-4-3] Third Modification A method for forming a ventilation portion in the substrate storage structure according to the embodiment of the present invention is, for example, the storage structure 100 shown in FIG. 4 or the storage structure according to the first modification. As described above, the present invention is not limited to the “method of forming a ventilation portion by not forming a mounting surface on one of the first rail portion 106A and the second rail portion 106B”.

  For example, the ventilation portion may be formed by further forming a notch in the connector.

  FIG. 6 is an explanatory diagram for explaining another example of the substrate storage structure according to the embodiment of the present invention, and shows another example of the configuration of the connector 104 constituting the storage structure 100 shown in FIG. ing.

  For example, as shown in FIG. 6, in the connector 104, a portion corresponding to the second rail portion 106 </ b> B where the mounting surface 114 is not formed, that is, a ventilation portion is formed in the storage structure 100 shown in FIG. 4. A notch 116 is formed in a portion “corresponding to the storage portion 106”. Here, the size of the notch 116 is experimentally set so as to correspond to the waterproofing capability provided to the substrate storage structure according to the embodiment of the present invention.

  As shown in FIG. 6, the notch 116 is formed in the connector 104, so that the size of the ventilation portion can be adjusted. Therefore, by forming the notch 116 in the connector 104 as shown in FIG. 6, in the board storage structure according to the embodiment of the present invention, it is possible to more easily set the waterproofing ability to be given to the storage structure. It becomes possible.

  In addition, the position of the notch part formed in the connector which comprises the storage structure of the board | substrate which concerns on embodiment of this invention is not restricted to the example shown in FIG.

  For example, the notch portion may be formed at a position corresponding to a ventilation portion formed between the housing to be attached to the connector and the connector.

  As described above, the substrate storage structure has been described as an embodiment of the present invention, but the embodiment of the present invention is not limited to the above. The embodiment of the present invention can be applied to a container in which a substrate having an arbitrary function, such as an ECU box, is stored. Moreover, the board | substrate storage structure which concerns on embodiment of this invention can be used for vehicles, such as a car, for example.

  As mentioned above, although preferred embodiment of this invention was described referring an accompanying drawing, it cannot be overemphasized that this invention is not limited to the example which concerns. It will be apparent to those skilled in the art that various changes and modifications can be made within the scope of the claims, and these are naturally within the technical scope of the present invention. Understood.

10, 100 housing structure 12, 102 housing 14, 104 connector 16, 106 housing section 16A, 106A first rail section 16B, 106B second rail section 18, 108 connector section 20, 110 mounting section 22, 112 terminal 24A 24B, 114 Mounting surface 50 200 Substrate 116 Notch

Claims (5)

A housing having an opening and a storage portion for storing a substrate on which an electronic component is mounted;
A connector electrically connected to the substrate housed in the housing portion and mounted on the housing so as to close the opening;
With
The connector is mounted on a mounting surface formed on the housing, and a ventilation portion that vents due to the absence of the mounting surface is formed between the housing to be mounted and the connector. A substrate storage structure characterized by the above.   2. The substrate storage structure according to claim 1, wherein the ventilation portion is formed in a portion corresponding to the storage portion of the housing. The storage portion has a first rail portion and a second rail portion for slidingly storing the substrate,
The substrate storage structure according to claim 2, wherein the portion corresponding to the storage portion is a portion corresponding to the first rail portion or a portion corresponding to the second rail portion. The portion corresponding to the accommodating portion of the casing in the connector, by further notch is formed, wherein said venting portion is formed, the substrate according to claim 2 or 3 Storage structure. A housing having an opening and a storage portion for storing a substrate on which an electronic component is mounted;
A connector having a connector portion electrically connected to the substrate housed in the housing portion, and a mounting portion attached to the housing so as to close the opening;
With
The mounting portion of the connector is mounted on a mounting surface formed in the housing, and a ventilation portion for venting is formed between the mounted housing and the connector. The substrate storage structure.

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