JP6036507B2 - Electrical equipment - Google Patents

Description

  The present invention relates to an electric device apparatus in which an electric device is accommodated in a case.

  As a conventional electrical device apparatus, an electrical device such as a semiconductor relay is accommodated in an accommodation space formed in the case, a potting agent is filled around the electrical device in the accommodation space, and an opening of the accommodation space is closed with a base Those are known (for example, see Patent Document 1).

  In addition, when using such an electrical device apparatus attached to a vehicle, for example, a rubber attachment member is attached to the case for vibration absorption, and the attachment member is engaged with a vehicle stay or the like. .

JP 2001-7565 A

  However, since the conventional electric device is integrated after the case and the mounting member are formed as separate parts, there is a problem that the number of parts and the number of assembling steps increase.

  In view of the above points, an object of the present invention is to reduce the number of parts and assembly man-hours in an electric device.

In order to achieve the above object, according to the first aspect of the present invention, the bottomed cylindrical case is made of rubber and forms a mounting portion (20) and a receiving space (31) that engage with the mounted member (100). A case (2) having a portion (30) and a cantilever projection (38) protruding from the inner wall surface of the case portion (30) into the accommodation space, and an electric device (1) accommodated in the accommodation space characterized by comprising a potting layer formed by potting agent charged around the projections and electrical equipment in the receiving space (4).

  According to this, since the attachment portion and the case portion are integrally formed of rubber, it is possible to reduce the number of parts and the number of assembling steps while ensuring the vibration absorbing function and the function of accommodating the electric device.

  In addition, when a load that pulls out of the accommodating space is applied to the potting layer, there is a risk of peeling at the interface between the potting layer and the case portion, but the protrusion moves following the potting layer. The interface between the portion and the potting layer is difficult to peel off, and an adhesive force is ensured between the protruding portion and the potting layer. As a result, the potting layer can be prevented from falling out of the accommodation space.

Furthermore, the invention according to claim 1 is characterized in that the protrusion has a free end on the opening side of the housing space and a fixed end on the side opposite to the opening of the housing space.
According to this, when a load in the direction of coming out of the accommodation space is applied to the potting layer (that is, a load directed from the opposite opening side of the accommodation space to the opening side of the accommodation space), the protrusion follows the potting layer. Therefore, the interface between the protrusion and the potting layer is more difficult to peel off.
As in the second aspect of the present invention, in the electric device apparatus according to the first aspect, the protrusion can be plate-shaped.

According to a third aspect of the present invention, in the electric device apparatus according to the first or second aspect , a through hole (39) is formed in the protrusion.

  According to this, since the potting agent wraps around the through hole, the relative movement between the protrusion and the potting layer is prevented, and the interface between the protrusion and the potting layer is more difficult to peel off.

In the invention according to claim 4 or 5, is collected with portion, it is disposed on the side wall side of the bottom portion of the case portion (32) and side walls (34), protrusions, seen in the direction of the potting layer exits from the housing space It is characterized by being disposed between the mounting portion and the electric device.

  According to this, it is possible to prevent peeling of a portion where the peeling is most likely to occur in the interface between the protruding portion and the potting layer.

  According to a sixth aspect of the present invention, in the electric device apparatus according to any one of the first to fifth aspects, the electric device includes: a substrate (11); and an electric / electronic component (12) mounted on the substrate. The electric device is embedded in the potting layer except for a part of the terminal.

  According to this, it is possible to prevent moisture or the like from adhering to the substrate or the electric / electronic component. Moreover, it becomes possible to abolish the base that closes the opening of the accommodation space, and the number of parts and assembly man-hours can be further reduced.

  In addition, the code | symbol in the bracket | parenthesis of each means described in this column and the claim shows the correspondence with the specific means as described in embodiment mentioned later.

(A) is a front view of the electric equipment apparatus which concerns on 1st Embodiment of this invention, (b) is a right view of (a), (c) is a bottom view of (a). 1A is a cross-sectional view taken along line AA in FIG. 1, FIG. 1B is a cross-sectional view taken along line BB in FIG. 1, FIG. 1C is a cross-sectional view taken along line CC in FIG. is there. It is DD sectional drawing of FIG. It is front sectional drawing which shows the case single-piece | unit of the electric equipment apparatus which concerns on 1st Embodiment of this invention. It is a bottom view of a case simple substance which shows the 1st modification of the electric equipment apparatus concerning a 1st embodiment of the present invention. It is a bottom view of the case single-piece | unit which shows the 2nd modification of the electric equipment apparatus which concerns on 1st Embodiment of this invention. It is a bottom view of the case simple substance which shows the 3rd modification of the electric equipment apparatus which concerns on 1st Embodiment of this invention. (A) is a bottom view showing a single case of an electric device according to a second embodiment of the present invention, (b) is a cross-sectional view taken along line FF in (a), and (c) is a cross-sectional view taken along line GG in (a). FIG. (A) is the bottom view which shows the case simple substance of the electric equipment apparatus which concerns on 3rd Embodiment of this invention, (b) is HH sectional drawing of (a), (c) is JJ cross section of (a). FIG.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the following embodiments, the same or equivalent parts are denoted by the same reference numerals in the drawings.

(First embodiment)
A first embodiment of the present invention will be described. The electric device apparatus of this embodiment is used for energization control of an electric device (not shown) mounted on a vehicle (not shown).

  As shown in FIG. 2, the electric device apparatus includes an electric device 1. The electrical device 1 includes a substrate 11, a semiconductor relay 12 that is mounted on the substrate 11 to open and close an electric circuit, and two terminals 13 that are mounted on the substrate 11 and electrically connected to the semiconductor relay 12. Yes. The semiconductor relay 12 corresponds to the electric / electronic component of the present invention.

  The terminal 13 is made of a conductive metal and is connected to a vehicle side terminal (not shown) as an external terminal. One terminal 13 is connected to a vehicle electrical device via a vehicle-side terminal and wiring (not shown), and the other terminal 13 is connected to the vehicle via a vehicle-side terminal and wiring (not shown). Connected to a storage battery (not shown).

  As shown in FIGS. 1-4, the electric equipment apparatus is provided with the case 2 formed with rubber | gum (for example, EPDM, NBR, CR). The case 2 has an attachment portion 20 that engages with a stay 100 fixed to the vehicle, and a case portion 30 in which the electric device 1 is accommodated.

  A mounting hole 21 into which the stay 100 is inserted is formed in the mounting portion 20. The stay 100 corresponds to the attached member of the present invention.

  The case portion 30 has a bottomed cylindrical shape, and an accommodation space 31 having one end opened is formed. In the accommodation space 31, the electric device 1 is accommodated, and the potting agent 4 is filled around the electric device 1 to form the potting layer 4.

  In FIG. 1C, the portion of the potting layer 4 is indicated by hatching in order to clarify the range of the potting layer 4.

  Here, the direction E in which the potting layer 4 exits from the accommodation space 31, in other words, the direction E from the bottom 32 of the case portion 30 toward the opening of the accommodation space 31 is referred to as a removal direction E.

  Two bottom concave portions 33 communicating with the accommodation space 31 are formed in the bottom portion 32. The bottom recess 33 includes a first bottom recess 331 that is a cylindrical space whose one end opens into the accommodation space 31, and a second bottom recess 332 that is a columnar space that communicates with the accommodation space 31 via the first bottom recess 331. And have.

  The first bottom recess 331 is located closer to the removal direction E than the second bottom recess 332. The inner diameter of the first bottom recess 331 is set smaller than the inner diameter of the second bottom recess 332. Of the wall surfaces surrounding the second bottom recess 332, the bottom recess engagement surface is located on the detachment direction E side and is located on the outer peripheral side of the first bottom recess 331 when viewed along the detachment direction E. 333 is a plane perpendicular to the detachment direction E.

  Four side wall recesses 35 communicating with the accommodation space 31 are formed on the side wall 34 of the case portion 30. The side wall recess 35 is a rectangular parallelepiped space. In addition, among the wall surfaces surrounding the side wall recess 35, the side wall recess engaging surface 351 located on the detachment direction E side is a surface perpendicular to the detachment direction E.

  Grooves 36 are formed along the circumferential direction of the side wall 34 at the opposite end portion of the side wall 34 (that is, the opening side end portion of the accommodation space 31). In addition, a side wall thin portion 37 having a thickness smaller than that of other portions of the side wall 34 is formed at the opposite end portion of the side wall 34.

  On the side wall 34 of the case portion 30, a rectangular parallelepiped and plate-like projection portion 38 that protrudes into the accommodation space 31 is formed. The protrusion 38 is a cantilever having a fixed end at a position away from the bottom 32 in the side wall 34, extends from the fixed end along the detachment direction E, and is an end portion on the detachment direction E side (that is, The opening side end portion of the accommodation space 31 is a free end.

  The mounting portion 20 is disposed on the side wall 34 side of the bottom portion 32 and the side wall 34 of the case portion 30, and the protrusion 38 is located between the mounting portion 20 and the electric device 1 when viewed along the removal direction E. Is arranged.

  The protrusion 38 is formed with a through hole 39 that communicates the space where the electrical device 1 is disposed in the accommodation space 31 and the space on the mounting portion 20 side in the accommodation space 31.

  The potting layer 4 is formed so as to cover the groove 36 and the protrusion 38, in other words, to the vicinity of the opening in the accommodation space 31, and the entire area of the substrate 11 and the semiconductor relay 12 is embedded in the potting layer 4. In the terminal 13, a portion close to the substrate 11 is embedded in the potting layer 4, and a portion far from the substrate 11 protrudes from the potting layer 4 to the outside.

  Further, the potting agent filled in the accommodation space 31 enters the bottom concave portion 33 and the side wall concave portion 35, so that the potting layer 4 enters the bottom side convex portion 41 that enters the bottom concave portion 33 and the side wall concave portion 35. Side wall-side convex portions 42 are formed.

  Then, due to the engagement between the bottom recess engagement surface 333 and the bottom projection 41 and the engagement between the sidewall recess engagement surface 351 and the sidewall projection 42, the case 2 and the potting layer 4 are detached. The relative movement of E is restricted.

  In addition, the potting agent wraps around the through hole 39 and the relative movement between the projecting portion 38 and the potting layer 4 is restricted.

  In the present embodiment, since the attachment portion 20 and the case portion 30 are integrally formed of rubber, it is possible to reduce the number of parts and the number of assembling steps while securing the vibration absorbing function and the function of housing the electric device 1 it can.

  By the way, when the electric device 1 receives a load from the external wiring, the case 2 and the potting layer 4 are easily peeled between the mounting portion 20 and the electric device 1.

  Here, when a load in the detaching direction E acts on the potting layer 4, the protrusion 38 positioned between the attachment portion 20 and the electric device 1 moves following the potting layer 4. And the potting layer 4 are difficult to peel off, and an adhesive force is secured between the projecting portion 38 and the potting layer 4, and as a result, the potting layer 4 can be prevented from falling out of the accommodating space 31.

  Further, since the potting agent wraps around the through hole 39, the relative movement between the projection 38 and the potting layer 4 is prevented, and the projection 38 moves following the potting layer 4 with certainty. The interface with the layer 4 becomes more difficult to peel off.

  Moreover, the relative movement between the case 2 and the potting layer 4 is achieved by the engagement between the bottom recess engagement surface 333 and the bottom projection 41 and the engagement between the sidewall recess engagement surface 351 and the sidewall projection 42. Since it can prevent, peeling of the interface of case 2 and potting layer 4 can be prevented.

  Further, since the groove 36 is provided to increase the contact area between the case 2 and the potting layer 4, peeling of the interface between the case 2 and the potting layer 4 can be more reliably prevented.

  Further, since the side wall thin portion 37 is easily deformed, when the case 2 and the potting layer 4 move relative to each other, the side wall thin portion 37 follows the potting layer 4 and the interface between the case 2 and the potting layer 4 is peeled off. Can be more reliably prevented.

  In addition, since the electric device 1 is embedded in the potting layer 4 except for a part of the terminal 13, it is possible to prevent moisture and the like from adhering to the substrate 11 and the electric / electronic component 12, and The base that closes the opening can be eliminated.

  In addition, the protrusion part 38 in the said embodiment can be variously changed like the modified example described below.

  In the first modification shown in FIG. 5, the shape of the protrusion 38 when viewed along the detachment direction E is a wave shape.

  In the second modified example shown in FIG. 6, a plurality of grooves 381 are formed on the surface of the projection portion 38 on the mounting portion 20 side and the surface of the electric device 1 side.

  In the third modification shown in FIG. 7, the protrusion 38 is divided into a plurality of parts.

  According to these modified examples, the contact area between the potting layer 4 and the protrusion 38 is increased, and the adhesive force between the potting layer 4 and the protrusion 38 can be increased.

(Second Embodiment)
A second embodiment of the present invention will be described. In the present embodiment, the configuration of the protruding portion 38 is changed, and the other parts are the same as those in the first embodiment. Therefore, only different portions from the first embodiment will be described.

  As shown in FIG. 8, the protruding portion 38 is a cantilever beam having a fixed end on the side wall 34 side of the case portion 30, and extends in a direction perpendicular to the detaching direction E from the side wall 34. On the other hand, the end of the accommodation space 31 in the vertical direction is a free end.

  According to this, when the load in the direction from the fixed end to the free end on the side wall 34 side (that is, the direction from the right to the left in FIG. 8A) acts on the potting layer 4, the projection 38 is potted. It is easy to move following the layer 4 in particular.

(Third embodiment)
A third embodiment of the present invention will be described. In the present embodiment, the configuration of the protruding portion 38 is changed, and the other parts are the same as those in the first embodiment. Therefore, only different portions from the first embodiment will be described.

  As shown in FIG. 9, the protruding portion 38 is a cantilever beam having the bottom portion 32 of the case portion 30 as a fixed end, extends from the bottom portion 32 along the detaching direction E, and has an end portion on the detaching direction E side ( That is, the opening side end of the accommodation space 31 is a free end.

  More specifically, the protrusion 38 includes a columnar column 382 extending along the removal direction E from the bottom 32 of the case unit 30, and an end of the column 382 on the removal direction E side (that is, the column unit). 380 is provided with a cylindrical collar 383 arranged on the free end side of 382). Further, the outer diameter of the flange portion 383 is set to be larger than the outer diameter of the column portion 382. In addition, the support | pillar part 382 and the collar part 383 may be prismatic shape.

  According to this, when the load in the detaching direction E acts on the potting layer 4, the support column 382 moves following the potting layer 4, so that the interface between the support column 382 and the potting layer 4 is not easily peeled off.

  Further, the engagement between the flange portion 383 and the potting layer 4 can prevent the potting layer 4 from dropping out of the accommodation space 31.

(Other embodiments)
Although the electric device 1 of the said embodiment was provided with the semiconductor relay 12 which opens and closes an electric circuit and was used for the electricity supply control of the electric device for vehicles, the electric device 1 is provided with a microcomputer, a drive circuit, etc. Thus, it may be used for controlling the operation of an electric device for a vehicle. Furthermore, the electrical device 1 may be used for energization control or operation control of electrical devices other than those for vehicles.

  In addition, this invention is not limited to above-described embodiment, In the range described in the claim, it can change suitably.

  Further, the above embodiments are not irrelevant to each other, and can be combined as appropriate unless the combination is clearly impossible.

  In each of the above-described embodiments, it is needless to say that elements constituting the embodiment are not necessarily essential unless explicitly stated as essential and clearly considered essential in principle. Yes.

  Further, in each of the above embodiments, when numerical values such as the number, numerical value, quantity, range, etc. of the constituent elements of the embodiment are mentioned, it is clearly limited to a specific number when clearly indicated as essential and in principle. The number is not limited to the specific number except for the case.

  Further, in each of the above embodiments, when referring to the shape, positional relationship, etc. of the component, etc., the shape, unless otherwise specified and in principle limited to a specific shape, positional relationship, etc. It is not limited to the positional relationship or the like.

DESCRIPTION OF SYMBOLS 1 Electric equipment 2 Case 4 Potting layer 20 Attaching part 30 Case part 31 Accommodating space 38 Protrusion part 100 Stay (attached member)

Claims (6)

From the attachment part (20) which consists of rubber | gum, engages with a to-be-attached member (100), the bottomed cylindrical case part (30) which forms an accommodation space (31), and the inner wall surface of the said case part (30) A case (2) having a cantilever projection (38) protruding into the accommodation space;
An electric device (1) housed in the housing space;
A potting layer (4) formed of a potting agent filled around the protrusions and the electrical equipment in the accommodation space ;
The electrical equipment apparatus according to claim 1, wherein the protrusion has a free end on the opening side of the housing space and a fixed end on the side opposite to the opening of the housing space .   The electric device according to claim 1, wherein the protrusion is plate-shaped. Electrical apparatus according to claim 1 or 2, characterized in that the through-hole (39) is formed on the protrusion. From the attachment part (20) which consists of rubber | gum, engages with a to-be-attached member (100), the bottomed cylindrical case part (30) which forms an accommodation space (31), and the inner wall surface of the said case part (30) A case (2) having a cantilever projection (38) protruding into the accommodation space;
An electric device (1) housed in the housing space;
A potting layer (4) formed of a potting agent filled around the protrusions and the electrical equipment in the accommodation space;
The mounting portion is disposed on the side wall side of the bottom portion (32) and the side wall (34) of the case portion,
The protrusion, when the potting layer is viewed in a direction escaping from the housing space, to that electrical equipment unit, characterized in that it is arranged between the mounting portion and the electrical device. The mounting portion is disposed on the side wall side of the bottom portion (32) and the side wall (34) of the case portion,
The protrusion, when the potting layer is viewed in a direction escaping from the accommodating space, one of 3 claims 1, characterized in that it is disposed between the electrical device and said attachment portion 1 Electrical equipment device described in one. The electrical device includes a substrate (11), an electrical / electronic component (12) mounted on the substrate, and a terminal (13) connected to an external terminal,
6. The electric device apparatus according to claim 1, wherein the electric device is embedded in the potting layer except for a part of the terminal.

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