JP2565474Y2 - Spring member for component group of electronic control unit - Google Patents

Description

[Detailed description of the invention]

[0001]

The invention starts with a spring element for a component group of an electronic control unit according to the invention.

[0002]

2. Description of the Prior Art Such components are known, in which an electrical element is pressed against a cooling angle member by a cooling angle member and a spring member fitted over the element. When fitted, the spring member may damage and / or push the element by shearing, which may cause the connection electrode to break. It is also known to press the electrical element against the cooling member with a spring member in such a group of components and to fix the spring member to the cooling member with rivets or screws. This means that the required material is relatively large, the spring member must be fixed in a troublesome manner, and the structural height of the component group, especially the cooling angle member, increases, which results in a large control device. Has the disadvantage of leading to

[0003]

The problem to be solved by the present invention is to eliminate the disadvantages of the prior art.

[0004]

According to the invention, the above-mentioned object is achieved by a spring element having the features of claim 1.

[0005]

The spring element according to the invention has the advantage that it can be fitted onto the composite of the cooling angle element and the electrical element without exerting a shearing force on it.

According to an advantageous configuration, the spring element is symmetrically configured, so that it can be manufactured simply and cost-effectively and can be mounted automatically. On top of this, the components can be made smaller, since there is no need for a surface of the cooling angle member which protrudes significantly from the electrical element for fixing the spring member. In another advantageous embodiment, the spring element is configured asymmetrically. Prior to the automatic mounting process, the spring member configured in this way can be correctly positioned and sorted using, for example, a vibrator.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG.
The cooling element is arranged in a known electronic control unit, not shown in detail. The cooling member has a cooling member leg 11 and a fixed tongue 12. By means of this fixing tongue, the cooling element is fixed on the one hand to the printed circuit board 13 provided with the conductor tracks, on the other hand the fixing tongue attaches the cooling element to a not-shown heat-conducting housing and / or a motor vehicle body part. Used for Side 11B of cooling member leg
The output element 14 to be cooled is in contact with the surface with the back surface 14A, and the connecting wire 14B of the output element passes through the hole 13A of the printed circuit board formed for itself and is electrically conductive with the printed circuit board, for example. It is connected by the attachment.

The output element 14 is pressed against a cooling angle member using a spring member 15 in order to achieve fixation and good heat transfer. The spring member is formed, for example, from a spring plate,
It is formed substantially U-shaped. The spring member is in contact with the upper surface 11A of the cooling member leg with a back portion 16. One spring leg 17 is in contact with the free side surface 11C of the cooling member leg,
The second spring leg 18 contacts the output element 14. The spring legs 17, 18 are each one outwardly offset shoulder 1
9 and 20. The lower ends of the steps are each bent inwardly and transition to terminal arches 21, 22 which are curved in opposite directions. The terminal arch has an inner surface, as described above, one on the cooling element leg and the other on the output element.

The spring leg has longitudinally extending openings 23, 24 in the region above the step, each opening reaching the back 16 of the spring member.

In order to automatically mount the described spring member, as shown in FIG. 3, the spring member is opened by the automatic mounting device so that the two grip portions 25 and 26 are opened from above.
24 and is received with the spring member expanded. The expanded spring member 15 is positioned above the pre-assembled cooling member leg and output element complex, and then moves inward until the gripper abuts the spring leg and is then withdrawn upward.

With such an assembly, no shearing force is transmitted to the output element, so that damage or displacement of the output element is avoided. The symmetrical configuration of the legs of the spring member facilitates gripping and positioning by the automatic mounting device.

By arranging the width of the back 16 of the spring element appropriately, the spring element can be arranged so that another output element is arranged on the opposite side of the cooling element leg and pressed and fixed together with the first output element. Can also be used. Further, when a fixing member and / or a guide member for improving the mounting process of the output element is used, the spring member can be used.

FIGS. 4 and 5 show another embodiment of the component group, which differs from the above-described embodiment by a different shape of the terminal arch. Terminal arch part 21
A surface facing the inside of A, 22A, that is, facing the axis of symmetry, is partially cut into claws 27, 28, respectively. This claw improves the retention of the spring member 15A,
In particular, this makes the component group resistant to vibration.

In order to achieve a further improvement in the vibration resistance, only one output element can be mounted to provide an appropriate groove in the cooling member leg, and the claw is engaged with this groove in an assembled state. I do. In the spring member 15B shown in FIG. 6, no claw is formed on the terminal arch portion 21B. Terminal arch part 21
B terminates at the lower free end in a terminal section 30, which is inclined by about 30 ° with respect to the longitudinal axis 31 of the spring member 15B.

The other terminal arch 22B similarly terminates in a terminal section 32 which is inclined about 30 ° with respect to the longitudinal axis 31 and in the other terminal section 3B.
It is formed longer than zero. The terminal arch 2
2B is an inwardly cut out claw 28 from the terminal section 32
B is provided.

End arch portions 21B, 22B of different configurations
By means of the end sections 30, 32, the spring element 15B can be correctly positioned or sorted out using a vibrator before the mounting process. In order to avoid unintended twisting of the spring member during mounting, the opening 2
3B and 24B can be formed with different widths. If the grips of the automatic mounting device are likewise correspondingly different, it is not possible to make a mistake or twist.

Such an in-place mounting process may be necessary, for example, when the top surface of the element is very sensitive and thus the claw 28B must be engaged only with the cooling member.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view of a first embodiment of the present invention.

FIG. 2 is a side view of a spring member.

FIG. 3 is a diagram showing an embodiment according to the present invention together with a part of an automatic mounting apparatus.

FIG. 4 is a cross-sectional view of the second embodiment of the present invention.

FIG. 5 is a side view of the spring member according to FIG. 4;

FIG. 6 is a cross-sectional view of a third embodiment of the spring member.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 10 Cooling member 11 Cooling member leg piece 11A Top surface 11B, 11C Side surface 12 Fixed tongue piece 13 Printed circuit board 13A Hole 14 Output element 14A Back surface 14B Connection wire 15,15A, 15B Spring member 16 Back 17,18 Spring leg 21,22,21A , 22A, 21B, 22B End arch 23, 24, 23B, 24B Opening 25, 26 Grip 27, 28, 28B Claw 30, 32 End segment 31 Vertical axis

 ────────────────────────────────────────────────── ─── Continued on the front page (72) Inventor Siegfried Goetzke Germany Bietigheim-Bissingen Ludwigsburger Strasse 130 (72) Inventor Dieter Kal Germany Tiefenbron Meirikestrasse 10 (72) Inventor Yutta Setter Ludwigsbruck am Wasafal 1 Germany (72) Inventor Peter Schiefer Abstatt Oststraße 41 Germany (56) References Japanese Utility Model 1-156592 (JP, U)

Claims (8)

(57) [Scope of request for utility model registration] A cooling member (10, 11) is provided,
A spring member for constituting member group of the at least one electrical element (14) is arranged electronic control unit which releases lost heat to the cooling member, be formed in substantially U-shaped, back (16) and two spring legs (17, 18), wherein the spring members (15, 15A, 15B) press the element against the cooling member. The member has an opening (23, 24; 23B, 24B) extending from the back (16) in the spring leg;
And each of the spring legs (17, 18) has an outwardly bent step (19, 20).
A spring member for a component group of the electronic control unit. 2. A terminal arch (21, 22; 21A, 22A; 21) having a free end of a spring leg curved outward.
B, 22B). 3. A spring leg (21, 22; 21A, 22A).
The spring member according to claim 1, wherein the spring members are configured symmetrically with respect to each other. 4. A claw (27, 22) whose terminal arch portion (21A, 22A) is cut inward at least a part of its entire width.
28. Any one of claims 1 to 3 having:
9. The spring member according to claim 7. 5. The cooling part (11) has a groove,
5. The spring member according to claim 4, wherein the pawls (27, 27B) of the spring member engage with the grooves. 6. The spring element according to claim 2, wherein the terminal arch (22B) has an extended section (30). 7. The spring element according to claim 1, wherein the terminal arch has at least a part of its entire width a claw (28B) cut inward. . 8. The spring element according to claim 1, wherein the openings have different dimensions.