WO2020110697A1

WO2020110697A1 - Electronic equipment housing

Info

Publication number: WO2020110697A1
Application number: PCT/JP2019/044235
Authority: WO
Inventors: 高士小才; 雄基岡
Original assignee: 日立オートモティブシステムズ株式会社
Priority date: 2018-11-28
Filing date: 2019-11-12
Publication date: 2020-06-04
Also published as: JP7258912B2; JPWO2020110697A1

Abstract

When a lid member is pressed against a seal member, the seal member is deformed at the bent portion of a concave groove, which leads to a problem in that the closing property is reduced. As shown in Fig. 2(B), line A-A' represents the center line of a bent portion 27, and the angle θ1 and the angle θ2 formed by the center line and the boundary lines 28 and 29 between the bent portion 27 and the linear portion 26 are equal. An outer peripheral projection 33 and an inner peripheral projection 34 each have a width corresponding to the width w2 between the boundaries 28 and 29 with the linear portion 26. As shown in Fig. 2(C), the seal member 3 has a substantially H-shaped cross section. The outer peripheral projection 33 and the inner peripheral projection 34 each have a height h2 in the depth direction of a concave groove 23, and have a gap of a height h0 from the bottom of the concave groove 23. Further, the height h2 of the outer peripheral projection 33 and the inner peripheral projection 34 is such that the height h2 slightly protrudes from the upper end of the concave groove 23.

Description

Electronic device housing

The present invention relates to an electronic device housing.

The electronic device case has a structure in which a seal member is provided to enhance the adhesion between the case and the lid member. The seal member is fitted in a groove formed in the housing, and the lid member is pressed against the seal member to close the housing.

In Patent Document 1, a waterproof packing material is provided in a groove at the opening edge of the opening formed in the housing body, and the waterproof packing member is elastically deformed between the housing body and the lid member to make the opening watertight. A waterproof casing of an electronic device which is held in a state is described.

JP, 2005-243762, A

The device described in Patent Document 1 has a problem that when the lid member is pressed against the seal member, the seal member is deformed at the bent portion of the concave groove and the obstruction is deteriorated.

An electronic device housing according to the present invention includes a housing in which a concave groove for fitting a seal member is bent, a seal member formed of an elastic material and fitted in the concave groove, and pressure-contacted to the seal member. And a lid member that closes the housing, and the sealing member includes an outer peripheral projection portion that corresponds to the bent portion of the concave groove and is in contact with an inner side surface of the concave groove on the outer peripheral side of the bent portion. ..

According to the present invention, it is possible to prevent the sealing member from being deformed at the bent portion of the concave groove and prevent the deterioration of the blocking property of the electronic device housing.

FIG. 3 is an exploded perspective view of the electronic device housing according to the first embodiment. (A) (B) (C) It is a perspective view of a seal member concerning a 1st embodiment, a top view of a state where a seal member was fitted in a crevice, and a sectional view. It is a top view of the state where the seal member concerning a 2nd embodiment was fitted in a crevice. It is sectional drawing of the state which fitted the sealing member concerning 3rd Embodiment in the concave groove of a bending part. It is sectional drawing of the state which fitted the sealing member concerning 4th Embodiment in the concave groove of a bending part. It is a top view of the state where the seal member concerning a 5th embodiment was fitted in a crevice. It is a top view of the state where the seal member concerning a 6th embodiment was fitted in a crevice. It is sectional drawing of the state which fitted the sealing member concerning 7th Embodiment in the concave groove of a bending part.

[First Embodiment]
FIG. 1 is an exploded perspective view of an electronic device housing 1 according to the first embodiment. As shown in FIG. 1, the electronic device housing 1 includes a housing 2, a seal member 3, and a lid member 4.

The housing 2 has a semiconductor module 21, a cooling channel 22 for cooling the semiconductor module 21, and a groove 23 for inserting the seal member 3. The refrigerant flows into the cooling flow path 22 through the inflow port 24 and flows out through the outflow port 25. The housing 2 contains, in addition to the semiconductor module 21, components constituting a power conversion device that converts a direct current into an alternating current by the semiconductor module 21 and the like.

The seal member 3 is made of an elastic material such as rubber, and is fitted into a groove 23 formed along the cooling flow path 22 in the housing 2. The lid member 4 is pressed against the housing 2 and the seal member 3 is compressed and deformed, so that the space between the lid member 4 and the housing 2 is closed. The details of the seal member 3 will be described later.

The lid member 4 is fixed to the housing 2 with screws or the like. The lid member 4 is provided with a convex portion 41 that covers the semiconductor module 21.

FIG. 2 is a diagram showing the seal member 3 and the concave groove 23. 2A is a perspective view of the seal member 3, FIG. 2B is a top view of the seal member 3 fitted in the concave groove 23 of the housing 2, and FIG. FIG. 7B is a cross-sectional view taken along the line AA′ of FIG.

As shown in FIG. 2(A), the seal member 3 is integrally formed in conformity with the shape of the straight line portion 26 of the concave groove 23 of the housing 2 and the bent portion 27 bent at about 90 degrees. To be done. Further, the seal member 3 has an outer protrusion 31 protruding toward the outside of the housing 2 and an inner protrusion 32 protruding toward the inside of the housing 2 facing the straight portion 26. Are provided at predetermined intervals. The outer protruding portion 31 and the inner protruding portion 32 contact the inner side surface of the concave groove 23.

Further, in the seal member 3, as shown in FIG. 2B, an outer peripheral protrusion 33 is provided on the outer periphery of the bent portion 27 and an inner peripheral protrusion 34 is provided on the inner periphery of the bent portion 27, corresponding to the bent portion 27. It is provided facing each other. The outer peripheral protruding portion 33 is in contact with the inner side surface 23 a of the bent portion 27 of the concave groove 23 on the outer peripheral side. The inner circumferential protrusion 34 is in contact with the inner side surface 23b of the bent portion 27 of the concave groove 23 on the inner circumferential side. Further, the outer protruding portion 31, the inner protruding portion 32, the outer peripheral protruding portion 33, and the inner peripheral protruding portion 34 are formed such that the end portions in the direction along the concave groove 23 are thin. The outer protruding portion 31, the inner protruding portion 32, the outer peripheral protruding portion 33, and the inner peripheral protruding portion 34 are bonded to the seal member 3 integrally or separately from the seal member 3 by using the same elastic material as the seal member 3. Will be provided.

As shown in FIG. 2C, the seal member 3 has a substantially H-shaped cross section. The outer peripheral protrusion 33 and the inner peripheral protrusion 34 have a height h2 in the depth direction of the concave groove 23, and have a gap of height h0 between the concave portion 23 and the bottom portion. Further, the height h2 of the outer peripheral protruding portion 33 and the inner peripheral protruding portion 34 is such that it slightly protrudes from the upper end of the concave groove 23. Although the seal member 3 is shown as an example in which its cross section is formed in a substantially H shape, it may have a rectangular shape or another shape.

As shown in FIG. 2B, the line AA′ represents the center line of the bent portion 27, and the angles θ1 and θ2 formed between the

boundary lines

28 and 29 of the bent portion 27 and the straight portion 26 and the center line are equal. Here, the outer peripheral protruding portion 33 and the inner peripheral protruding portion 34 have a width corresponding to the width w2 until reaching the

boundary lines

28 and 29 with the linear portion 26, respectively. It is preferable that the widths of the outer peripheral protruding portion 33 and the inner peripheral protruding portion 34 are larger than the width w1 of the outer protruding portion 31 and the inner protruding portion 32.

When the lid member 4 is pressed against the housing 2 from the state shown in FIG. 2C, the outer peripheral protruding portion 33 and the inner peripheral protruding portion 34 have

boundary lines

28 and 29 between the bent portion 27 and the straight portion 26. Since it has a width of up to, the force applied to the upper part of the seal member 3 acts evenly on the outer peripheral projection 33 and the inner peripheral projection 34, so that the seal member 3 moves in the depth direction of the groove 23. Elastically deforms. When the outer peripheral protrusion 33 and the inner peripheral protrusion 34 are not provided, the seal member 3 is deformed and twisted in the concave groove 23, so that there is a problem that the sealing property of the seal member 3 is reduced.

According to the present embodiment, the seal member 3 includes the outer peripheral protrusion 33 and the inner peripheral protrusion 34 that come into contact with the inner side surface of the concave groove 23, corresponding to the bent portion 27 of the concave groove 23. It is possible to prevent the seal member 3 from being deformed at the bent portion 27 of 23 and prevent the electronic device housing 1 from being deteriorated in closing property.

[Second Embodiment]
FIG. 3 is a top view showing a state in which the seal member 3 according to the second embodiment is fitted in the concave groove 23 of the housing 2. An exploded perspective view of the electronic device housing 1 is similar to that of the first embodiment. The same parts as those in FIGS. 1 and 2 described in the first embodiment are designated by the same reference numerals, and the description thereof will be omitted.

In the second embodiment, the seal member 3 has a form in which the inner peripheral projection 34 shown in the first embodiment is removed. Even with such a seal member 3, when the lid member 4 is pressed against the housing 2, the outer peripheral protrusion 33 has a width up to the

boundary lines

28 and 29 between the bent portion 27 and the straight portion 26. Therefore, the force applied to the upper portion of the seal member 3 is elastically deformed in the depth direction of the concave groove 23 due to the stress of the outer peripheral protrusion 33. When the outer peripheral protrusion 33 is not provided, the seal member 3 is deformed and twisted toward the outer peripheral side in the concave groove 23, so that there is a problem that the sealing property by the seal member 3 is reduced.

[Third Embodiment]
FIG. 4 is a cross-sectional view of a state in which the seal member 3 according to the third embodiment is fitted in the concave groove 23 of the bent portion 27 of the housing 2. An exploded perspective view of the electronic device housing 1 is similar to that of the first embodiment. The same parts as those in FIGS. 1 and 2 described in the first embodiment are designated by the same reference numerals, and the description thereof will be omitted.

In the third embodiment, the shapes of the outer peripheral protrusion 33 and the inner peripheral protrusion 34 are different from those of the first embodiment. As shown in FIG. 4, the seal member 3 has a substantially H-shaped cross section. The outer peripheral protrusion 33 and the inner peripheral protrusion 34 have a height h2 in the depth direction of the concave groove 23, and have a gap of height h0 between the concave portion 23 and the bottom portion. Further, the height h2 of the outer peripheral protruding portion 33 and the inner peripheral protruding portion 34 is such that it slightly protrudes from the upper end of the concave groove 23. The outer peripheral protrusion 33 and the inner peripheral protrusion 34 are thinly formed along the depth direction of the groove 23. That is, the outer peripheral protruding portion 33 and the inner peripheral protruding portion 34 are formed such that the thickness d1 on the side closer to the bottom of the concave groove 23 is thinner than the thickness d2 on the upper end side of the concave groove 23. The outer peripheral protruding portion 33 and the inner peripheral protruding portion 34 have a thickness d2 on the upper end side of the concave groove 23 and contact the inner side surface of the concave groove 23.

According to the third embodiment, it is possible to prevent the sealing member 3 from being deformed at the bent portion 27 of the concave groove 23, prevent the electronic device casing 1 from being deteriorated in closing property, and prevent the sealing member 3 from being concave. The workability when mating is improved.

[Fourth Embodiment]
FIG. 5 is a cross-sectional view of a state in which the seal member 3 according to the fourth embodiment is fitted in the concave groove 23 of the bent portion 27 of the housing 2. An exploded perspective view of the electronic device housing 1 is similar to that of the first embodiment. The same parts as those in FIGS. 1 and 2 described in the first embodiment are designated by the same reference numerals, and the description thereof will be omitted.

In the fourth embodiment, the shapes of the outer peripheral protrusion 33 and the inner peripheral protrusion 34 are different from those of the first embodiment. As shown in FIG. 5, the seal member 3 has a substantially H-shaped cross section. The outer peripheral protrusion 33 and the inner peripheral protrusion 34 have a height h2 in the depth direction of the concave groove 23, and have a gap of height h0 between the concave portion 23 and the bottom portion. Further, the height h2 of the outer peripheral protruding portion 33 and the inner peripheral protruding portion 34 is such that it slightly protrudes from the upper end of the concave groove 23. The outer peripheral protrusion 33 and the inner peripheral protrusion 34 are formed in an arc-shaped cross section along the depth direction of the concave groove 23. That is, the outer peripheral protrusion 33 and the inner peripheral protrusion 34 are formed in an arc shape from the side close to the bottom of the concave groove 23 to the upper end side of the concave groove 23. The outer peripheral protruding portion 33 and the inner peripheral protruding portion 34 abut on the inner side surface of the concave groove 23 on the arc-shaped apex side.

According to the fourth embodiment, it is possible to prevent the sealing member 3 from being deformed at the bent portion 27 of the concave groove 23, prevent the electronic device housing 1 from being deteriorated in closing property, and prevent the sealing member 3 from being concave. The workability when mating is improved.

[Fifth Embodiment]
FIG. 6 is a top view showing a state in which the seal member 3 according to the fifth embodiment is fitted in the concave groove 23 of the bent portion 27 of the housing 2. An exploded perspective view of the electronic device housing 1 is similar to that of the first embodiment. The same parts as those in FIGS. 1 and 2 described in the first embodiment are designated by the same reference numerals, and the description thereof will be omitted.

In the fifth embodiment, the shapes of the outer peripheral protrusion 331 and the inner peripheral protrusion 341 are different from those of the first embodiment. As shown in FIG. 6, the present embodiment has a configuration including a plurality of outer peripheral protrusions 331 and a plurality of inner peripheral protrusions 341.

In the bent portion 27, a plurality of outer peripheral protrusions 331 and a plurality of inner peripheral protrusions 341 are arranged in the direction along the groove 23. Here, the plurality of outer peripheral protrusions 331 and the plurality of inner peripheral protrusions 341 are arranged in a width corresponding to the width w2 until reaching the

boundary lines

28 and 29 with the linear portion 26, respectively. The width w2 is larger than the width w1 of the outer protrusion 31 or the inner protrusion 32 in the straight portion 26 along the concave groove 23. Although FIG. 6 illustrates an example in which four outer peripheral protrusions 331 and three inner peripheral protrusions 341 are provided, the numbers of outer peripheral protrusions 331 and inner peripheral protrusions 341 are the same as those of the seal member 3 and the groove 23. Set arbitrarily according to the size.

When the lid member 4 is pressed against the housing 2, the force applied to the upper portion of the seal member 3 acts on the plurality of outer peripheral protrusions 331 and the plurality of inner peripheral protrusions 341. Even if the inner circumferential protrusion 341 is deformed, the clearance can be secured. Therefore, the seal member 3 is elastically deformed along the depth direction of the groove 23.

According to the fifth embodiment, it is possible to prevent the sealing member 3 from being deformed at the bent portion 27 of the concave groove 23, prevent the electronic device housing 1 from being deteriorated in closing property, and prevent the sealing member 3 from being concave. The workability when mating is improved.

[Sixth Embodiment]
FIG. 7 is a top view showing a state in which the seal member 3 according to the sixth embodiment is fitted in the concave groove 23 of the bent portion 27 of the housing 2. An exploded perspective view of the electronic device housing 1 is similar to that of the first embodiment. The same parts as those in FIGS. 1 and 2 described in the first embodiment are designated by the same reference numerals, and the description thereof will be omitted.

In the sixth embodiment, the shapes of the outer peripheral protrusion 332 and the inner peripheral protrusion 342 are different from those of the first embodiment. As shown in FIG. 7, in this embodiment, a plurality of outer peripheral protrusions 332 and a plurality of inner peripheral protrusions 342 are formed by providing slits s1 and s2 along the depth direction of the concave groove 23 in the protrusions. To do. Here, the plurality of outer peripheral protrusions 332 and the plurality of inner peripheral protrusions 342 are arranged in a width corresponding to the width w2 until reaching the

boundary lines

28 and 29 with the linear portion 26, respectively. The width w2 is larger than the width w1 of the straight protrusion 26 in the outer protrusion 31 or the inner protrusion 32 in the direction along the groove 23. Although FIG. 7 illustrates an example including three outer peripheral protrusions 331 and three inner peripheral protrusions 341 divided by the slits s1 and s2, the number of outer peripheral protrusions 331 and inner peripheral protrusions 341 is The size is arbitrarily set according to the sizes of the seal member 3 and the groove 23.

When the lid member 4 is pressed against the housing 2, the force applied to the upper portion of the seal member 3 acts on the plurality of outer peripheral protrusions 332 and the plurality of inner peripheral protrusions 342. Even if the inner circumferential protrusion 342 is deformed, the clearance can be secured by the slits s1 and s2. Therefore, the seal member 3 is elastically deformed along the depth direction of the groove 23.

According to the sixth embodiment, it is possible to prevent the sealing member 3 from being deformed at the bent portion 27 of the concave groove 23, prevent the electronic device housing 1 from being deteriorated in closing property, and prevent the sealing member 3 from being concave. The workability when mating is improved.

[Seventh Embodiment]
FIG. 8 is a cross-sectional view of a state in which the seal member 3 according to the seventh embodiment is fitted in the concave groove 23 of the bent portion 27 of the housing 2. An exploded perspective view of the electronic device housing 1 is similar to that of the first embodiment. The same parts as those in FIGS. 1 and 2 described in the first embodiment are designated by the same reference numerals, and the description thereof will be omitted.

In the seventh embodiment, the shapes of the outer peripheral protrusion 333 and the inner peripheral protrusion 343 are different from those of the first embodiment. As shown in FIG. 8, in this embodiment, a plurality of outer peripheral protrusions 333 and a plurality of inner peripheral protrusions 343 are formed by providing slits s3 and s4 in the protrusion along the length direction of the concave groove 23. To do. Although FIG. 7 illustrates an example including three outer peripheral protrusions 331 and three inner peripheral protrusions 341 divided by the slits s3 and s4, the number of outer peripheral protrusions 331 and inner peripheral protrusions 341 is The size is arbitrarily set according to the sizes of the seal member 3 and the groove 23.

When the lid member 4 is pressed against the housing 2, the force applied to the upper portion of the seal member 3 acts on the plurality of outer peripheral protrusions 333 and the plurality of inner peripheral protrusions 343, but the outer peripheral protrusion 333. Even if the inner circumferential protrusion 343 is deformed, the clearance can be secured by the slits s3 and s4. Therefore, the seal member 3 is elastically deformed along the depth direction of the groove 23.

According to the seventh embodiment, it is possible to prevent the sealing member 3 from being deformed at the bent portion 27 of the concave groove 23, prevent the electronic device housing 1 from being deteriorated in closing property, and prevent the sealing member 3 from being concave. The workability when mating is improved.

According to the embodiment described above, the following operational effects can be obtained.
(1) The electronic device housing 1 includes a housing 2 in which a concave groove 23 for fitting the seal member 3 is bent, and a seal member 3 formed of an elastic material and fitted in the concave groove 23. A lid member 4 that presses the seal member 3 to close the housing 2; and the seal member 3 corresponds to the bent portion 27 of the concave groove 23, and the inner surface on the outer peripheral side of the bent portion 27 of the concave groove 23. The outer

peripheral protrusions

33, 331, 332, 333 are provided so as to abut the 23a. As a result, it is possible to prevent the seal member 3 from being deformed at the bent portion 27 of the concave groove 23 and prevent the electronic device housing 1 from being deteriorated in closing property.

The present invention is not limited to the above-described embodiments, and other forms conceivable within the scope of the technical idea of the present invention are also included in the scope of the present invention as long as the characteristics of the present invention are not impaired. .. Further, the above-described embodiments may be combined together.

DESCRIPTION OF SYMBOLS 1 electronic equipment housing 2 housing 3 sealing member 4 lid member 21 semiconductor module 22 cooling channel 23 concave groove 26 straight portion 27

bent portions

28, 29 boundary line 31 outer protruding portion 32 inner protruding

portion

33, 331, 332, 333 Outer

peripheral projections

34, 341, 342, 343 Inner peripheral projections

Claims

A housing in which a concave groove for fitting a seal member is bent, a seal member formed of an elastic material and fitted in the concave groove, and a lid for pressing the seal member to close the housing. And a member,
The electronic device housing, wherein the sealing member includes an outer peripheral protrusion corresponding to the bent portion of the concave groove and abutting on an inner surface of the concave groove on the outer peripheral side of the bent portion.
The electronic device housing according to claim 1,
The said seal member is an electronic device housing|casing provided with the inner peripheral protrusion part corresponding to the bent part of the said recessed groove, and contact|abutting to the inner surface of the bent part inner peripheral side of the said recessed groove.
The electronic device housing according to claim 2,
The seal member is provided with an outer protrusion portion and an inner protrusion portion that are in contact with the inner side surface of the concave groove, corresponding to the linear portion of the concave groove,
An electronic device housing, wherein a width of the outer peripheral protrusion or the inner peripheral protrusion in the direction along the concave groove is larger than a width of the outer protrusion or the inner protrusion in the direction along the concave groove.
The electronic device housing according to claim 2,
The electronic device housing, wherein the outer peripheral protruding portion or the inner peripheral protruding portion of the seal member is formed up to a connection boundary between the bent portion of the concave groove and the straight portion of the concave groove.
The electronic device housing according to claim 2,
The outer peripheral protrusion or the inner peripheral protrusion of the seal member is an electronic device housing in which a width in a direction along the concave groove is uniform from a center of a bent portion of the concave groove.
The electronic device housing according to any one of claims 2 to 5,
The electronic device housing in which the outer peripheral protrusion or the inner peripheral protrusion of the seal member is formed by a plurality of protrusions.
The electronic device housing according to any one of claims 2 to 5,
The outer peripheral protruding portion or the inner peripheral protruding portion is an electronic device housing having a slit formed along the length direction of the concave groove.
The electronic device housing according to any one of claims 2 to 5,
The outer peripheral protruding portion or the inner peripheral protruding portion is an electronic device housing formed thin along the depth direction of the groove.
The electronic device housing according to any one of claims 2 to 5,
The outer peripheral protrusion or the inner peripheral protrusion is an electronic device housing in which a cross section along the depth direction of the concave groove is formed in an arc shape.
The electronic device housing according to any one of claims 2 to 5,
The outer peripheral protruding portion or the inner peripheral protruding portion is an electronic device housing formed to be thin in a direction along the concave groove.