KR101786635B1 - Electronic control unit - Google Patents

Abstract

The present invention relates to an electronic control apparatus having a structure for preventing the falling of water droplets.
The present invention provides a connector comprising: a housing including a main opening formed downward and a connector opening formed toward a side; A circuit board inserted into the housing through the main opening; A connector coupled to the circuit board and at least partially exposed through the connector opening; And a support plate coupled to the housing to support or fix the circuit board to cover at least a portion of the main opening of the housing; Wherein a first order portion is protruded from the inner wall of the connector opening or a first connector protrusion is formed on an outer surface of the connector frame of the connector so that water introduced through the connector opening is prevented from protruding from the connector frame outer surface And then discharging it downward.

Description

ELECTRONIC CONTROL UNIT

The present invention relates to an electronic control device. More particularly, the present invention relates to an electronic control apparatus having a structure for preventing the falling of water droplets.

An electronic control device including an electronic element for control and a printed circuit board on which the electronic element is mounted is used in various fields.

Typically, the vehicle is equipped with an electronic control unit such as an ECU (electronic control unit) for electronically controlling various devices. Such an electronic control apparatus is provided with information provided from sensors or switches installed in various parts of a vehicle and is used to process information received in this manner to improve ride comfort and safety of the vehicle or to provide various facilities to drivers and passengers And performs various electronic control functions.

An electronic control device for a vehicle including such an ECU includes a housing, a printed circuit board (PCB) housed in the housing, and a connector or the like coupled to one side of the electronic circuit board for external socket connection .

The required waterproof performance of the electronic control unit differs depending on the use environment. There is an electronic control device that improves the waterproof performance by securing the airtightness by using a sealing member, and on the other hand, there is an electronic control device having a waterproof performance enough to prevent the entry of water droplets.

For example, Japanese Unexamined Patent Application Publication No. 2008-130359 discloses a structure for preventing a water droplet falling from above from flowing through a clearance between a connector and a case by having an awning covering an upper portion of the connector.

However, there is a problem that it is difficult to effectively prevent the infiltration of the falling water by the above-described awning structure alone.

An object of the present invention is to provide an electronic control device having a structure that is easy to arrange in a vehicle or the like and effectively prevents invasion of falling water.

More particularly, the present invention relates to an electronic control device that exposes the connector to the side of an electronic control device, prevents water droplets from entering through a joint between the connector and the housing, or effectively prevents infiltration of water into the housing The purpose is to provide.

It is another object of the present invention to provide an electronic control device capable of effectively preventing water from being transferred to a printed circuit board even if water enters the electronic control device.

It is another object of the present invention to provide an electronic control device that provides a novel coupling structure of a housing and a printed circuit board and effectively dissipates the heat of the heating element provided on the printed circuit board.

The present invention provides a connector comprising: a housing including a main opening formed downward and a connector opening formed toward a side; A circuit board inserted into the housing through the main opening; A connector coupled to the circuit board and at least partially exposed through the connector opening; And a support plate coupled to the housing to support or fix the circuit board to cover at least a portion of the main opening of the housing; Wherein a first order portion is protruded from the inner wall of the connector opening or a first connector protrusion is formed on an outer surface of the connector frame of the connector so that water introduced through the connector opening is prevented from protruding from the connector frame outer surface And then discharging it downward.

In one embodiment, the first order portion may extend along an upper inner wall and both lateral inner walls of the connector opening.

In addition, the first connector protrusion may extend along the upper surface and both sides of the connector frame.

Wherein the first connector protrusion and the second connector protrusion are spaced apart from the first connector protrusion and formed on the outer side of the connector frame, and a groove is formed between the first connector protrusion and the second connector protrusion .

A second order portion protruding from an inner wall of the connector opening may be positioned between the first connector protrusion and the second connector protrusion.

In one embodiment, a protruded-order protrusion may be provided on the outside of the connector opening.

Further, in the present invention, the main opening and the connector opening are connected to each other, and as the circuit board is inserted into the housing with the connector fixed to the circuit board, can do.

The present invention provides an electronic control device having a connector on a circuit board and a structure in which when the support plate supporting the circuit board is inserted into the main opening of the housing, the connector is exposed through the connector opening formed by extending the main opening.

The electronic control apparatus according to the present invention provides a structure that effectively prevents water from entering between the connector exposed to the side and the connector opening. In this case, even if a separate sealing member is not used, water falling from the upper side or the side of the housing can be prevented from entering the circuit board inside the housing.

Further, the electronic control apparatus according to the present invention has the effect of enabling the circuit board to be effectively discharged without flooding even if water is present on the upper surface of the support plate for fixing or supporting the circuit board.

1 is a perspective view of an electronic control apparatus according to a preferred embodiment of the present invention.
2 is a perspective view showing a state in which a housing and a circuit board are separated from each other in an electronic control device according to a preferred embodiment of the present invention.
3 is a perspective view showing a state in which a circuit board and a support plate are separated from each other in an electronic control device according to a preferred embodiment of the present invention.
4 is a rear perspective view of a circuit board and a support plate in an electronic control device according to a preferred embodiment of the present invention.
5 is a perspective view of the support plate of the electronic control unit in another direction according to a preferred embodiment of the present invention.
6 is a cross-sectional view in the CC 'direction in FIG.
7 is a cross-sectional view of the connector opening and the connector in the vertical direction (direction AA 'in Fig. 1) in the electronic control device according to the preferred embodiment of the present invention.
8 is a cross-sectional view of the connector opening and the connector in the horizontal direction (BB 'direction in FIG. 1) in the electronic control device according to the preferred embodiment of the present invention.
FIG. 9 is a view for explaining waterproofing or drainage in the vicinity of a connector in an electronic control device according to a preferred embodiment of the present invention. FIG.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the drawings, the same reference numerals are used to designate the same or similar components throughout the drawings. In the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear. In addition, the preferred embodiments of the present invention will be described below, but it is needless to say that the technical idea of the present invention is not limited thereto and can be variously modified by those skilled in the art.

FIG. 1 is a perspective view of an electronic control apparatus according to a preferred embodiment of the present invention, and FIG. 2 is a perspective view showing a state in which a housing and a circuit board are separated from each other in an electronic control apparatus according to a preferred embodiment of the present invention.

An electronic control apparatus 1 according to a preferred embodiment of the present invention includes a housing 10, a circuit board 30 inserted into the housing 10, a connector 40 connected to the circuit board 30, And a support plate 50 that supports the circuit board 30 and is coupled to the housing 10.

The electronic control apparatus 1 may be provided in a vehicle or the like with the support plate 50 positioned below and the connector 40 facing the side. The water 2 falling from the upper side of the housing 10 may not directly enter the inside of the housing 10. However, in the present invention, a separate sealing member for waterproofing may not be provided on the mating surfaces of the housing 10, the support plate 50, and the connector 40, thereby preventing the water 2 from entering or draining the water. Additional suggestions.

The housing 10 includes a main opening 12 opened downwardly and a connector opening 14 connected to the main opening 12 and opened to the side. The housing 10 may be provided in a cylindrical shape in which the main opening 12 and the connector opening 14 are opened. A step 20 having a narrow width may be formed inside the main opening 12 of the housing 10. In one embodiment, a fixing groove 24 is formed on a lower side wall of the housing 10, and at least one housing fixing hole 26 may be formed in the housing 10.

The circuit board 30 is inserted into the main opening 12, and the main opening 12 is closed by the support plate 50. The rim of the support plate 50 can be contacted with the step 20 formed inside the main opening 12. [

The connector 40 connected to one side of the circuit board 30 is connected to the connector opening 14 of the housing 10 when the circuit board 30 fixed or supported on the support plate 50 is inserted into the housing 10 Exposed. A waterproof protrusion 16 protruding upwardly and laterally may be formed on the rim of the connector opening 14. The order protrusion 16 functions to prevent water falling from the upper side or the upper side of the electronic control device 1 from entering the inside of the connector opening 14 in the first place.

The connector 40 includes an external connection pin 42a exposed to the inside and an internal connection pin 42b connected to the external connection pin 42a and electrically connected to the circuit board 30. The connector frame 41 is formed on the outer surface of the connector frame 41 so as to extend from the outer surface of the connector frame 41 to the upper surface of the connector frame 41, 44 and a second connector protrusion 48 spaced apart from the first connector protrusion 44 are formed. A groove 46 is formed between the first connector projection 44 and the second connector projection 48. [

The support plate (50) supports or fixes the circuit board (30). A screw through hole (52) through which the plate fixing screw (21) passes is formed in the support plate (50). The support plate 50 can be fixed to the housing 10 by fixing the plate fixing screw 21 to the screw hole 22 provided in the housing 10 through the screw through hole 52. [ In one embodiment, protruding fixing protrusions 54 are formed on the side of the supporting plate 50. The fixing protrusions 54 engage with fixing grooves 24 formed on the lower side wall of the housing 10, (50) can be fixed to the housing (10).

The combination of the circuit board 30 and the support plate 50 will now be described in more detail.

FIG. 3 is a perspective view showing a state in which a circuit board and a support plate are separated from each other in an electronic control device according to a preferred embodiment of the present invention, and FIG. 4 is a cross- Fig. 5 is a rear perspective view of the support plate. 5 is a perspective view of the support plate of the electronic control unit according to the preferred embodiment of the present invention in another direction, and FIG. 6 is a cross-sectional view taken along line C-C 'of FIG.

Referring to FIG. 3, the circuit board 30 may be provided with a substrate fixing hole 32 passing through the front and rear surfaces thereof. In addition, a heat dissipation layer 38 may be formed on one surface of the circuit board 30. The heat dissipation layer 38 may be formed by applying a thermal glue to one surface of the circuit board 30. As shown in FIG. 4, a heat generating electronic device 36 for generating heat may be provided on a back surface to which the heat dissipating layer 38 is applied. The heat generated in the heat generating electronic element 36 can be effectively dissipated through the heat dissipating layer 38. [ On the other hand, a groove-shaped substrate alignment groove 34 may be formed at the lower end of the circuit board 30. [

The support plate 50 is provided in a plate shape of a predetermined shape. Since the support plate 50 is coupled to the main opening 12 of the housing 10, the outer shape of the support plate 50 may be formed to correspond to the shape of the main opening 12.

On the upper surface of the support plate 50, engaging protrusions 56a, 56b that abut the inner wall surface of the housing 10 may be formed. The engaging protrusions 56a and the engaging protrusions 56b may be connected to each other, but they may be disconnected by the inclined discharges 58a and 58b, which are inclined downward outward as shown in FIGS.

A substrate fixing screw 60 is provided on the support plate 50 in a substantially vertical direction and a substrate fixing screw 37 inserted into the substrate fixing hole 32 of the circuit board 30 is provided on the substrate fixing plate 60, A substrate fixing screw engaging portion 62 is formed. A substrate fixing screw coupling hole 66 is formed in the substrate fixing screw coupling portion 62.

The circuit board 30 is bonded to the board fixing plate 60 with the heat radiation layer 38 interposed therebetween. The heat generated in the heat generating electronic device 36 is transferred to the substrate fixing plate 60 through the heat dissipation layer 38. A heat dissipation wall 64 may be provided on the back surface of the substrate fixing plate 60. On the other hand, heat transferred to the substrate fixing plate 60 is transmitted to the support plate 50 and diverged.

At least one substrate support protrusion 68 and a substrate alignment protrusion 70 may be provided on the upper surface of the support plate 50. When the circuit board 30 is fixed to the substrate fixing plate 60 of the support plate 50, one side of the lower end of the circuit board 30 is supported by the substrate support protrusions 68. In other words, the lower end of the circuit board 30 is sandwiched between the substrate holding plate 60 and the substrate holding protrusions 68. The substrate alignment protrusions 70 are fitted into the substrate alignment grooves 34 formed in the circuit board 30 so that the external teeth of the circuit board 30 can be aligned.

In the present invention, a spacing projection 72 is protruded from the upper surface of the support plate 50. The lower end of the circuit board 30 abuts on the upper portion of the spacing projection 72. The circuit board 30 is supported on the support plate 50 with a predetermined distance from the upper surface of the support plate 50 on which the spacing protrusions 72 are not formed. Accordingly, even if water is present on the upper surface of the support plate 50, water does not reach the circuit board 30, and flooding of the circuit board 30 can be prevented.

On the other hand, as described above, the upper surface of the support plate 50 is provided with inclined drain portions 58a and 58b inclined downward outward. In one embodiment, the warp drain portions 58a 58b may be provided on at least one side of the substrate fixing plate 60. That is, the inclined drain portions 58a and 58b may be formed in a direction substantially perpendicular to the front and rear surfaces of the circuit board 30 in a state where the circuit board 30 is fixed to the board fixing plate 60. [

6, the circuit board 30 is fixed in contact with the board fixing plate 60 by inserting the board fixing screws 37 into the board fixing screw coupling holes 66. Although not shown in FIG. 6, the bottom side of the circuit board 30 is supported by the substrate support protrusions 68 on the opposite side of the substrate fixing plate 60, as shown in FIG. 4, This can be more certain. 6, the circuit board 30 is spaced apart from the upper surface of the support plate 50 by a predetermined distance d as the end of the circuit board 30 is supported by the spaced protrusions 70. [ In addition, the upper surface of the support plate 50 at both sides of the substrate fixing plate 60 is provided with inclined drain portions 58a and 58b so that the water intruded into the inside can be discharged to the outside of the electronic control unit 1. [

Referring to FIG. 6, a radiating fin 51 for radiating heat may be formed on the lower surface of the support plate 50.

FIG. 7 is a cross-sectional view of the connector opening and the connector in the vertical direction (direction AA 'in FIG. 1) in the electronic control device according to the preferred embodiment of the present invention, and FIG. 8 is an explanatory view of the electronic control device according to the preferred embodiment of the present invention Sectional view of the connector opening and the connector in the horizontal direction (direction BB 'in Fig. 1).

When the circuit board 30 is inserted into the housing 10, the connector 40 is positioned in the connector opening 14 and partly exposed. Along the rim, along the rim of the connector opening 14 is formed a secondary protrusion 16 to prevent water falling off the top of the housing 10 from entering the connector opening 14. [ The first power receiving portion 18 and the second power receiving portion 19 may be protruded from the inner wall of the connector opening 14. [ The first order portion 18 and the second order portion 19 can be formed on the upper wall surface and the side wall surface inside the connector opening 14. [ In one embodiment, the second order portion 19 may be provided further inside the connector opening 14 than the first order portion 18. Each of the first-order portion 18 and the second-order portion 19 may be formed to extend from the upper wall surface inside the connector opening 14 to the side wall surface.

When the circuit board 30 is inserted into the housing 10 and the connector 40 is located in the connector opening 14, the first connector protrusion 44 formed outside the connector frame 41 of the connector 40, And the second connector protrusion (48). In other words, the second-order portion 19 can be located in the groove 46. The first order portion 19 is located in front of the first connector projection 44 (i.e., at the entrance side of the connector opening 14).

On the other hand, as shown in FIGS. 3, 4, and 7, a drainage forming protrusion 74 is provided on the upper surface of the support plate 50 to the outside of the engagement protrusion 56b, and the engagement protrusion 56b, And a drain passage 76 may be formed between the forming protrusions 74. The second connector protrusion 48 is located on the upper side of the drainage passage 76 and the first connector protrusion 44 is located outside the drainage forming protrusion 74 with the connector 40 positioned in the connector opening 14. [ can do. The water between the first connector protrusion 44 and the second connector protrusion 48 flows along the groove 46 between the first connector protrusion 44 and the second connector protrusion 48, 76) and then discharged to the outside.

FIG. 9 is a view for explaining waterproofing or drainage in the vicinity of a connector in an electronic control device according to a preferred embodiment of the present invention. FIG.

Referring to Fig. 9, the water falling over the connector opening 14 is prevented from intruding into the connector opening 14 by the protrusion 16 protruding outward of the connector opening 14.

When the water enters the connector opening 14 side, water can be prevented from entering the inside of the connector opening 14 by the first water-containing portion 18. It is possible to configure the first order portion 18 and the connector frame 41 of the connector 40 as close as possible to increase the order effect.

The water that has passed between the first order portion 18 and the connector frame 41 is blocked by the first connector protrusion 44 and rides along the first connector protrusion 44 and downward along the outer surface of the connector 40 It can flow down.

The water is prevented from entering further inward by the second connector protrusion 48 and the second water level portion 19 located in the groove 46 even if the water enters over the first connector protrusion 44, The water can flow downward along the groove 46.

It will be apparent to those skilled in the art that various modifications, substitutions and substitutions are possible, without departing from the scope and spirit of the invention as disclosed in the accompanying claims. will be. Therefore, the embodiments disclosed in the present invention and the accompanying drawings are intended to illustrate and not to limit the technical spirit of the present invention, and the scope of the technical idea of the present invention is not limited by these embodiments and the accompanying drawings . The scope of protection of the present invention should be construed according to the following claims, and all technical ideas within the scope of equivalents should be construed as falling within the scope of the present invention.

1: electronic control device 10: housing
12: main opening 14: connector opening
16: order protrusion 18: first order part
19: 2nd order part 20: step
22: screw coupling hole 24: fixing groove
30: circuit board 32: substrate fixing hole
34: substrate alignment groove 36: heating electronic device
38: heat sink layer 40: connector
41: connector frame 44: first connector projection
46: groove portion 48: second connector projection
50: support plate 52: screw through hole
54: Fixing projections 56a, 56b:
58a, 58b: Inclined drainage part 60: Substrate fixing plate
62: substrate fixing screw engaging portion 64: heat dissipating wall
66: substrate fixing screw engaging hole 68: substrate supporting projection
70: substrate alignment protrusion 72:
74: Drain forming protrusion 76: Drain

Claims (7)

A housing including a main opening formed toward the lower side and a connector opening formed toward the side;
A circuit board inserted into the housing through the main opening;
A connector coupled to the circuit board and at least partially exposed through the connector opening; And
A support plate coupled to the housing to support or fix the circuit board to cover at least a portion of the main opening of the housing;
Lt; / RTI >
Wherein a first order portion is formed by projecting along an upper inner wall and both side inner walls of the connector opening,
Wherein a first connector protrusion is formed along an upper surface and both sides of the connector frame of the connector to discharge water flowing through the connector opening down along the connector frame outer side of the connector. delete delete The method according to claim 1,
Wherein the first connector protrusion and the second connector protrusion are spaced apart from the first connector protrusion and formed on the outer side of the connector frame, and a groove is formed between the first connector protrusion and the second connector protrusion Wherein the electronic control device is an electronic control device. 5. The method of claim 4,
And a second order portion protruding from an inner wall of the connector opening is positioned between the first connector protrusion and the second connector protrusion. 6. The method according to any one of claims 1 to 5,
And an extruded protrusion formed on an outer side of the connector opening. The method according to claim 6,
Wherein the main opening and the connector opening are connected to each other and the connector is located in the connector opening as the circuit board is inserted into the housing with the connector fixed to the circuit board Device.

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