KR20200134992A - Electronic control unit for vehicle having one body structure - Google Patents

Abstract

According to an embodiment of the present invention, an electronic control device for a vehicle with an integral structure includes: a printed circuit board; a case including a sliding guide for fixing the printed circuit board in a vertical direction and a fixing hook for fixing the printed circuit board in a horizontal direction; and a cover which is integrated with the case and covers an opening, thereby reducing manufacturing costs by simplifying an assembly process.

Description

Electronic control device for vehicles with an integral structure {ELECTRONIC CONTROL UNIT FOR VEHICLE HAVING ONE BODY STRUCTURE}

The present invention relates to an electronic control device for a vehicle capable of lowering a manufacturing cost by simplifying an assembly process by integrating a case and a cover containing electronic components that control an in-vehicle device.

In general, a vehicle is equipped with an electronic control unit (ECU) having a modular structure. At this time, the electronic control device contains internal components (PCB board including electronic devices, etc.) capable of controlling the in-vehicle device.

In the conventional electronic control device, since the case is composed of two pieces (Piece) divided into upper and lower parts, a mold is required for each part, resulting in a high manufacturing cost.

In addition, since the two parts (upper and lower case) are assembled and the printed circuit board (PCB) is seated inside, there is a problem that in some cases, the gap occurs in the upper and lower directions where the PCB substrate is seated. .

The present invention has been proposed in view of the above circumstances, and an object of the present invention is to provide an electronic control device for a vehicle capable of lowering a manufacturing cost by simplifying an assembly process by integrating a case and a cover containing electronic components.

The problem to be solved by the present invention is not limited to the problems mentioned above, and other problems not mentioned herein will be clearly understood by those skilled in the art from the following description.

An electronic control device for a vehicle having an integrated structure according to an embodiment of the present invention includes: a printed circuit board; A case including a sliding guide for fixing the printed circuit board in a vertical direction and a fixing hook for fixing the printed circuit board in a horizontal direction, and having a partially opened opening; And a cover formed integrally with the case and covering the opening.

The sliding guide includes a first guide bar protruding from an inner side end of the case in a longitudinal direction; And a second guide bar disposed above the first guide bar at a predetermined distance from the first guide bar.

The upper and lower intervals of the first and second guide bars correspond to the thickness of the printed circuit board.

One end of one of the first and second guide bars has a predetermined inclination angle so that the printed circuit board is easily inserted.

It is preferable that the other end portions of the first and second guide bars are disposed at a horizontal distance from the fixing hook.

The fixing hooks are disposed at positions corresponding to the upper and lower intervals of the first and second guide bars.

The fixing hook is provided, and the fixing hook has a structure in which some sections are inclined from one side to the other side.

It is preferable that the fixing hook has a relatively thinner thickness than the upper and lower intervals of the first and second guide bars.

The printed circuit board has a plurality of fastening grooves at an end thereof, and the fixing hook is forcibly fitted into the fastening groove.

The case has a plurality of fitting holes around the opening, and the cover includes a fitting protrusion that is detachable from the fitting hole.

The case has a fixing member protruding from an inner end portion and fixing an end portion of the printed circuit board.

The cover includes a plurality of reinforcing members at a joint portion with the case.

The cover has a long slit between the plurality of reinforcing members.

On the other hand, the electronic control device for a vehicle having an integrated structure according to an embodiment of the present invention, a printed circuit board having an element plate having an electronic element and a connector connected to the element plate; A case including a substrate accommodating portion accommodating the element plate and a fastening portion accommodating the connector and having a partially opened opening; And a cover formed integrally with the case to cover the opening, and having a through hole through which a portion of the connector is exposed to the outside.

The substrate accommodating part includes a sliding guide for fixing the element plate in a vertical direction and a fixing hook for fixing the element plate in a horizontal direction.

The sliding guide includes a first guide bar protruding in a longitudinal direction from an inner side end of the substrate receiving portion; And a second guide bar disposed above the first guide bar at a predetermined distance from the first guide bar.

It is preferable that the upper and lower intervals of the first and second guide bars correspond to the thickness of the element plate.

The element plate has a plurality of fastening grooves at an end thereof, and the fixing hook is forcibly fitted to the fastening groove.

The substrate accommodating portion includes a fixing member protruding from an inner end portion and fixing an end portion of the element plate.

The present invention simplifies the assembly process by integrating the case and the cover in which the electronic component is embedded, thereby reducing the process time.

Accordingly, the present invention can lower the manufacturing cost by reducing the number of parts.

In addition, in the present invention, since the case and the cover are manufactured in one mold, dimensional accuracy can be increased. Therefore, the case made of the cover and the integral structure can stably house the printed circuit board without shaking.

In addition, by differentiating the inner thickness of the connector of the printed circuit board and the case (fastening portion, board receiving portion) accommodating the element plate, it is possible to efficiently secure a vehicle body assembly space.

1 is a schematic view showing an electronic control device for a vehicle according to an embodiment of the present invention.
2 and 3 are views showing a case and a cover made of an integral structure in the electronic control device for a vehicle according to an embodiment of the present invention.
4 is a view showing a case and a printed circuit board in the electronic control device for a vehicle according to an embodiment of the present invention.
5 is a view showing a fastening relationship between the configuration of a case and a printed circuit board through a cross section AA′ shown in FIG. 4.
6 is an enlarged view of portions A, B, and C shown in FIG. 5;
7 to 9 are views showing a sliding guide and a fixing hook for fixing a printed circuit board in the electronic control device for a vehicle according to an embodiment of the present invention.
10 is a diagram schematically illustrating a case and a cover integrally molded in the electronic control device for a vehicle according to an embodiment of the present invention.

Advantages and features of the present invention, and a method of achieving them will become apparent with reference to the embodiments described below in detail together with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but will be implemented in various forms different from each other, and only these embodiments make the disclosure of the present invention complete, and common knowledge in the technical field to which the present invention pertains. It is provided to completely inform the scope of the invention to the possessor, and the invention is defined by the description of the claims. Meanwhile, terms used in the present specification are for explaining embodiments and are not intended to limit the present invention. In this specification, the singular form also includes the plural form unless specifically stated in the phrase. As used herein, "comprises" or "comprising" refers to the presence of one or more other components, steps, actions and/or elements other than the recited elements, steps, actions and/or elements, or Does not rule out addition.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a schematic diagram of an electronic control device for a vehicle according to an embodiment of the present invention.

Referring to FIG. 1, the electronic control device 100 for a vehicle includes a case 110, a cover 120, and a printed circuit board (PCB).

The case 110 and the cover 120 have an integral structure composed of one piece. The case 110 has an opening partly opened and an accommodation space therein.

In the receiving space of the case 110, internal components such as electronic devices are embedded. Here, the electronic device collectively refers to an electronic component related to vehicle control. At this time, the electronic device is configured on a printed circuit board.

The cover 120 covers the opening of the case 110. In this case, the cover 120 includes a plurality of reinforcing members 121 at a joint portion with the case 110.

The reinforcing member 121 has a function of reinforcing the joint. Accordingly, the cover 120 can effectively cover the opening of the case 110 even when it is frequently folded.

The cover 120 includes a long-hole slit 122 between the plurality of reinforcing members 121. The slit 122 is formed in the joint so that the cover 120 can be effectively folded.

The case 110 and the cover 120 have a chamfered structure in which outer corners are cut.

The printed circuit board includes a connector 132 to be connected to an external cable.

In this case, the cover 120 has a through hole having a size corresponding to the connector 132 so that the connector 132 can be easily connected to an external cable.

2 and 3 are views showing a case and a cover formed in an integrated structure in the electronic control device for a vehicle according to an embodiment of the present invention.

Referring to FIGS. 2 and 3 in parallel, the case 110 includes a substrate receiving portion 111 and a fastening portion 112.

The substrate accommodating portion 111 and the fastening portion 112 have an integral structure in a "L" shape. In this case, a space for accommodating a printed circuit board (PCB) is provided inside the board receiving part 111.

The substrate receiving portion 111 has a top and bottom width of 11 mm so that the printed circuit board has a minimum space to be inserted in the length direction. This can prevent unnecessary wastage of assembly space and lower the manufacturing cost.

The fastening part 112 is formed to extend from the end of the substrate receiving part 111. The fastening part 112 has an opening 115 partially open.

The fastening part 112 has a larger upper and lower width than the board receiving part 111 to accommodate a connector provided on a printed circuit board. In this case, the upper and lower widths of the fastening part 112 may be 24mm to 26mm.

When the upper and lower widths of the fastening part 112 are less than 24mm, it may be difficult to secure an assembly space for the connector. The upper and lower width values of the fastening part 112 may vary in shape and size depending on the type of the connector, but it is preferable to be 25 mm in consideration of the value of the existing ready-made connector.

On the other hand, when the upper and lower widths of the fastening part 112 exceed 26 mm, the manufacturing cost increases and unnecessary assembly space may occur.

Therefore, it is preferable that the upper and lower widths of the fastening part 112 are 24mm to 26mm.

Meanwhile, the cover 120 has a structure covering the opening 115 of the case 110. In this case, the cover 120 is made of the same synthetic resin material as the case 110.

The cover 120 rotates up and down based on a joint with the case 110 and opens and closes the opening of the case 110.

A plurality of fitting protrusions 123 protruding at regular intervals are provided at the side ends of the cover 120. In this case, a fitting hole 117 corresponding to the fitting protrusion 123 is formed in the periphery (side end) of the fastening part 112.

The fitting protrusion 123 and the fitting hole 117 are forcibly fitted.

The cover 120 includes a through hole 124 through which some sections are passed so that the connector of the printed circuit board embedded in the case 110 is exposed to the outside. Here, the partial section means an area having a size corresponding to the connector.

4 is a view showing a case and a printed circuit board in the electronic control device for a vehicle according to an embodiment of the present invention.

Referring to FIG. 4, the printed circuit board 130 includes an element plate 131 and a connector 132.

The element plate 131 is a substrate on which a plurality of lead wires are printed, and includes an electronic element. The connector 132 functions as an intermediary so that the lead wire of the element plate 131 and an external cable are interconnected.

The connector 132 is disposed under one side of the element plate 131. Here, one side means an initial direction of the fastening part 112.

The case 110 in which the printed circuit board 130 is embedded includes a board receiving part 111 and a fastening part 112.

The substrate receiving part 111 accommodates the device plate 131. In this case, it is preferable that the horizontal length of the substrate receiving part 111 corresponds to the horizontal length of the element plate 131.

The fastening part 112 accommodates the connector 132. In this case, the horizontal length of the fastening part 112 may correspond to the horizontal length of the connector 132 or may be relatively short.

5 is a view showing a fastening relationship between the configuration of a case and a printed circuit board through a cross section A-A' shown in FIG. 4, and FIG. 6 is an enlarged view of parts A, B, and all shown in FIG.

Referring to FIGS. 5 and 6 in parallel, the cover (120 in FIG. 3) is omitted to examine the function of the case 110 in detail. In addition, upper ends of the substrate receiving portion 111 and the fastening portion 112 are omitted to describe the interior of the case 110.

The case 110 includes a sliding guide 113, a fixing hook 114 and a fixing member 116.

The sliding guide 113 fixes the element plate 131 in the vertical direction. The sliding guide 113 is formed to protrude from the side wall of the case 110.

The illustrated sliding guide 113 is formed to protrude in a space encompassing the substrate receiving portion 111 and the fastening portion 112 in the case 110, but is not limited thereto, and the sliding guide 113 includes the substrate receiving portion 111 ) May be formed to protrude only at the inner side end.

The sliding guide 113 includes a first guide bar 113a and a second guide bar 113b, as shown in FIG. 6A.

The first guide bar 113a is formed to protrude in the longitudinal direction on the inner side end of the substrate receiving part 111.

The second guide bar 113b is disposed above the first guide bar 113a with a predetermined distance from the first guide bar 113a.

In this case, it is preferable that the upper and lower intervals w of the first and second guide bars 113a and 113b correspond to the thickness t2 of the element plate 131 shown in FIG. 6C.

This is because, when the element plate 131 is inserted between the first and second guide bars 113a and 113b, there should be no upper and lower clearance.

Here, so that the element plate 131 is easily inserted between the first and second guide bars 113a and 113b, one end of one of the first and second guide bars 113a and 113b has a predetermined inclination angle It is good to have (a). In this case, the inclination angle (a) is preferably made of an acute angle.

Meanwhile, the fixing hook 114 fixes the element plate 131 in the horizontal direction.

As shown in (b) of FIG. 6, the thickness t1 of the fixing hook 114 is preferably relatively thinner than the upper and lower intervals w of the first and second guide bars 113a and 113b. Do.

In this case, the fixing hook 114 is preferably disposed at a position corresponding to the upper and lower intervals w of the first and second guide bars 113a and 113b. Here, the position of the fixing hook 114 is preferably disposed on a path through which the element plate 131 is inserted at an upper and lower space w of the first and second guide bars 113a and 113b.

The fixing hook 114 is forcibly fitted into a plurality of fastening grooves 113 provided at an end of the element plate 131 to fix the printed circuit board 130 in the horizontal direction.

The fixing hook 114 includes an inclined surface 114a, a horizontal surface 114b, and a vertical surface 114c.

The inclined surface 114a means a section inclined from one side to the other side. Here, one side is the initial direction of the case 110, the other side is the inner end direction of the case 110.

The horizontal plane 114b refers to a horizontal section extending from the inclined plane 114a.

The vertical plane 114c refers to a vertical section extending from the horizontal plane 114b.

At this time, when the element plate 131 is inserted into the case 110, the fastening groove 113 of the element plate 131 has an inclined surface 114a, a horizontal surface 114b, and It is forcibly fitted through the vertical surface 114c.

The vertical surface 114c fixes the fastening groove 113 of the element plate 131 in a horizontal direction.

Next, the fixing member 116 is formed protruding from the inner (other side) end of the case 110. The main function of the fixing member 116 is to prevent the printed circuit board 130 from sagging downward.

The fixing member 116 has a structure surrounding the other end of the device plate 131 from the top and bottom in order to effectively fix the other end of the device plate 131.

At this time, the fixing member 116 is preferably a chamfer applied to a portion surrounding the element plate 131.

7 to 9 are views showing a sliding guide and a fixing hook for fixing a printed circuit board in the electronic control device for a vehicle according to an embodiment of the present invention.

First, referring to FIG. 7, it can be seen that the printed circuit board 130 is seated on the case 110.

When the printed circuit board 130 is inserted into the case 110 in the horizontal direction, the printed circuit board 130 is seated after passing through the fixing hook 114 disposed on the insertion path.

In this process, when the other end of the printed circuit board 130 is slightly deformed in the vertical direction due to the fixing hook 114 and the fixing hook 114 is forcibly inserted into the fastening groove 113, the initial position (the horizontal Position).

At this time, it is preferable that the fixing hook 114 has a thickness thinner than the upper and lower intervals of the first and second guide bars 113a and 113b.

That is, when the fixing hook 114 is forcibly fitted into the fastening groove 133 and seated, the length L between the horizontal surface of the fixing hook 114 and the surface of the printed circuit board 130 must remain.

This is because when the printed circuit board 130 is inserted in the horizontal direction, fine deformation must be made in the vertical direction within a range not to be broken.

To this end, as shown in FIG. 8, the other end portions of the first and second guide bars 113a and 113b are preferably disposed at a distance d1 in the horizontal direction with the fixing hook 114.

If the distance d1 is too narrow, breakage may occur at the end portion while the printed circuit board 130 is inserted in the horizontal direction.

Referring to FIG. 9, the fixing hook 114 may be provided at an upper end of the other end of the first guide bar 113a.

At this time, it is preferable that the other end of the second guide bar 113b is disposed at a distance d2 from the fixing hook 114 in the horizontal direction. In this case, the interval d2 is the same as the interval d1 of FIG. 8.

The fixed hook 114 has a structure in which some sections are inclined from one side to the other side. In this case, the partial section means the inclined surface 114a shown in FIG. 6(b).

The second guide bar 113b shown in FIG. 9 has a structure extending from the second guide bar 113b shown in FIG. 8 to effectively prevent sagging of the printed circuit board 130.

10 is a diagram schematically illustrating a case and a cover integrally molded in the electronic control device for a vehicle according to an embodiment of the present invention.

Referring to FIG. 10, the case 110 and the cover 120 made of the substrate receiving part 111 and the fastening part 112 are injection-molded in one mold, and formed in an integrated structure.

As the upper core mold, the lower core mold, and the side core mold have a frame for molding the case 110 and the cover 120, the present invention is a product in which the case 110 and the cover 120 have an integral structure. Can be made.

As described above, the present invention simplifies the assembly process by integrating the case and the cover in which the electronic components are embedded, thereby reducing process time.

Accordingly, the present invention can lower the manufacturing cost by reducing the number of parts.

In addition, in the present invention, since the case and the cover are manufactured in one mold, dimensional accuracy can be increased. Therefore, the case made of the cover and the integral structure can stably house the printed circuit board without shaking.

In addition, by differentiating the inner thickness of the connector of the printed circuit board and the case (fastening portion, board receiving portion) accommodating the element plate, it is possible to efficiently secure a vehicle body assembly space.

The present invention is not limited to the above-described embodiments, and can be implemented with various modifications within the scope of the technical idea of the present invention.

100: vehicle electronic control device
110: case 111: substrate receiving portion
112: fastening part 113: sliding guide
113a: first guide bar 113b: second guide bar
114: fixed hook 114a: inclined surface
114b: horizontal plane 114c: vertical plane
115: opening 116: fixing member
117: fitting hole 120: cover
121: reinforcing member 122: slit
123: fitting protrusion 124: through hole
130: printed circuit board 131: element plate
132: connector 133: fastening groove

Claims (20)

Printed circuit board;
A case including a sliding guide for fixing the printed circuit board in a vertical direction and a fixing hook for fixing the printed circuit board in a horizontal direction, and having a partially opened opening; And
An electronic control device for a vehicle having an integrated structure including a cover formed integrally with the case and covering the opening.
The method of claim 1,
The sliding guide
A first guide bar protruding from an inner side end of the case in a longitudinal direction; And
And a second guide bar disposed above the first guide bar at a predetermined distance from the first guide bar. The electronic control device for a vehicle having an integrated structure.
The method of claim 2,
The upper and lower intervals of the first and second guide bars are
Electronic control device for a vehicle having an integral structure corresponding to the thickness of the printed circuit board.
The method of claim 2,
One end of any one of the first and second guide bars
The electronic control device for a vehicle having an integrated structure having a predetermined inclination angle so that the printed circuit board is easily inserted.
The method of claim 4,
The other ends of the first and second guide bars
The electronic control device for a vehicle having an integral structure that is disposed at a horizontal distance from the fixing hook.
The method of claim 5,
The fixing hook is
The electronic control device for a vehicle having an integrated structure that is disposed at a position corresponding to the upper and lower intervals of the first and second guide bars.
The method of claim 4,
At the top of the other end of the first guide bar
The fixing hook is provided, and the fixing hook has a structure in which some sections are inclined from one side to the other side.
The method of claim 2,
The fixing hook is
The electronic control device for a vehicle having an integrated structure having a thickness relatively thinner than the upper and lower intervals of the first and second guide bars.
The method of claim 1,
The printed circuit board
It has a plurality of fastening grooves at the ends,
The electronic control device for a vehicle having an integral structure wherein the fixing hook is forcibly fitted into the fastening groove.
The method of claim 1,
The case is
A plurality of fitting holes are provided around the opening,
The electronic control device for a vehicle having an integral structure, wherein the cover includes a fitting protrusion that is detachable from the fitting hole.
The method of claim 1,
The case is
An electronic control device for a vehicle having an integral structure, comprising a fixing member protruding from an inner end portion and fixing an end portion of the printed circuit board.
The method of claim 1,
The cover is
An electronic control device for a vehicle having an integrated structure comprising a plurality of reinforcing members at a joint portion with the case.
The method of claim 12,
The cover is
An electronic control device for a vehicle having an integral structure comprising a long-hole slit between the plurality of reinforcing members.
A printed circuit board having a plurality of fastening grooves at an end thereof;
A case including a sliding guide that fixes the printed circuit board in a vertical direction and a fixing hook that fixes the printed circuit board in a horizontal direction and is spaced apart from the sliding guide, and has a partially opened opening; And
Includes; a cover formed integrally with the case and covering the opening,
The electronic control device for a vehicle having an integral structure wherein the fixing hook is forcibly fitted into the fastening groove.
A printed circuit board having an element plate having an electronic element and a connector connected to the element plate;
A case including a substrate accommodating portion accommodating the element plate and a fastening portion accommodating the connector and having an opening partly opened; And
An electronic control device for a vehicle having an integrated structure including a cover formed integrally with the case and covering the opening and having a through hole through which a portion of the connector is exposed to the outside.
The method of claim 15,
The substrate receiving part
A sliding guide fixing the element plate in a vertical direction,
Electronic control device for a vehicle having an integral structure comprising a fixing hook for fixing the element plate in the horizontal direction.
The method of claim 16,
The sliding guide
A first guide bar protruding in a longitudinal direction from an inner side end of the substrate receiving portion; And
And a second guide bar disposed above the first guide bar at a predetermined distance from the first guide bar. The electronic control device for a vehicle having an integrated structure.
The method of claim 17,
The upper and lower intervals of the first and second guide bars are
Electronic control device for a vehicle having an integral structure corresponding to the thickness of the element plate.
The method of claim 16,
The element plate
It has a plurality of fastening grooves at the ends,
The electronic control device for a vehicle having an integral structure wherein the fixing hook is forcibly fitted into the fastening groove.
The method of claim 15,
The substrate receiving part
An electronic control device for a vehicle having an integrated structure comprising a fixing member protruding from an inner end portion and fixing an end portion of the element plate.

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