JP6020322B2 - 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 electric device is formed with the electric device (1) and a mounting hole (21) made of rubber and into which the mounted member (100) is inserted. A case (2) formed integrally with a mounting part (20) and a bottomed cylindrical case part (30) made of rubber and forming an accommodation space (31) for accommodating the electrical device ; A potting layer (4) filled around the electric device in the housing space, and the bottom (32) of the case includes a first cylindrical space (332) and the first cylindrical space. 2nd cylindrical space (331) which is located in the opening direction (E) side of the accommodation space and has an inner diameter smaller than that of the first cylindrical space, and the first cylindrical shape A space communicates with the accommodation space via the second cylindrical space. Made the bottom has a recess (33), the potting layer is characterized by having a bottom-side protrusion (41) which penetrates into the bottom recess.

  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.

Further , since the relative movement between the case and the potting layer can be prevented, peeling of the interface between the case and the potting layer can be prevented.

According to a second aspect of the present invention , in the electrical equipment device according to the first aspect, the side wall (34) of the case is a wall surface (351) that is a recess communicating with the accommodation space and is perpendicular to the opening direction. ), And the potting layer has a side wall-side convex portion ( 42) that enters the side wall concave portion .

According to a third aspect of the present invention , in the electrical device apparatus according to the first or second aspect , the side wall (34) of the case has a convex portion (38) protruding toward the accommodating space, and the potting The layer is characterized by having a concave portion (43) into which the convex portion enters .

According to a fourth aspect of the present invention , in the electric device apparatus according to any one of the first to third aspects, the electric device includes a substrate (11) and an electric / electronic component (12) mounted on the substrate. , and a terminal (13) connected to an external terminal, electrical equipment, you characterized in that 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 one 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.2 (a). It is sectional drawing of the principal part which shows the 1st modification of the electric equipment apparatus which concerns on one Embodiment of this invention. It is sectional drawing of the principal part which shows the 2nd modification of the electric equipment apparatus which concerns on one Embodiment of this invention. It is sectional drawing of the principal part which shows the 3rd modification of the electric equipment apparatus which concerns on one Embodiment of this invention. It is sectional drawing of the principal part which shows the 4th modification of the electric equipment apparatus which concerns on one Embodiment of this invention.

  An 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. 1-3, 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.

  The potting layer 4 is formed so as to cover the groove 36, 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.

  The bottom concave portion 33, the side wall concave portion 35, the bottom side convex portion 41, and the side wall convex portion 42 constitute an engaging portion of the present invention.

  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.

  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.

  Furthermore, 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 side wall recessed part 35 and the side wall side convex part 42 in the said embodiment can be variously changed like the modified example described below.

  In the first modification shown in FIG. 4, the cross-sectional shapes of the side wall concave portion 35 and the side wall side convex portion 42 are wedge shapes. According to this, the amount of the potting agent can be reduced.

  In the second modification shown in FIG. 5, the cross-sectional shapes of the side wall concave portion 35 and the side wall side convex portion 42 are arcuate. According to this, it becomes easy to remove the case 2 from the mold.

  In the third modified example shown in FIG. 6, the angle formed between the side wall recess engaging surface 351 and the inner peripheral surface of the side wall 34 is an acute angle. According to this, the degree of engagement (that is, hooking) between the side wall concave portion engaging surface 351 and the side wall side convex portion 42 can be increased.

  In the fourth modification shown in FIG. 7, instead of the side wall recess 35, a side wall convex portion 38 that protrudes from the side wall 34 of the case portion 30 toward the accommodation space 31 is formed. Further, in place of the side wall convex portion 42, a side wall side concave portion 43 into which the side wall convex portion 38 enters is formed in the potting layer 4. In addition, the side wall convex part 38 and the side wall side recessed part 43 comprise the engaging part of this invention.

(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 Mounting part 30 Case part 31 Accommodating space 100 Stay (attached member)

Claims (4)

Electrical equipment (1);
An attachment portion (20) made of rubber and formed with an attachment hole (21) into which the attached member (100) is inserted, and a bottomed portion made of rubber and forming an accommodation space (31) for accommodating the electric device. A case (2) formed integrally with a cylindrical case portion (30);
A potting layer (4) filled around the electrical device in the housing space,
The bottom portion (32) of the case is positioned closer to the first columnar space (332) and the opening direction (E) side of the accommodating space than the first columnar space, than the first columnar space. And a second cylindrical space (331) formed with a small inner diameter, and the first cylindrical space is formed so as to communicate with the accommodating space via the second cylindrical space. Having a bottom recess (33);
The electrical device apparatus , wherein the potting layer has a bottom-side convex portion (41) that enters the bottom concave portion . The side wall (34) of the case has a side wall concave part (35) which is a concave part communicating with the accommodation space and has a wall surface (351) perpendicular to the opening direction, and the potting layer includes the side wall concave part The electrical apparatus apparatus according to claim 1, further comprising: a side wall-side convex portion ( 42) that enters the wall . Claim sidewall of the case (34) has a projection (38) projecting toward said receiving space, the potting layer, characterized in that it comprises a recess (43) in which the protrusion enters The electrical apparatus apparatus according to 1 or 2 . 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,
The electric device according to any one of claims 1 to 3, wherein the electric device is embedded in the potting layer except for a part of the terminal.

Images