Search

DE-102013214403-B4 - Base plate for a vehicle heat exchanger, method for its manufacture, heat exchanger and oil filter module

DE102013214403B4DE 102013214403 B4DE102013214403 B4DE 102013214403B4DE-102013214403-B4

Abstract

Base plate (16) for a vehicle heat exchanger with a receiving area (20) to which a heat exchanger (14) or a cooling package (18) of a heat exchanger (14) is attached, and at least one mounting hole (22) which is arranged at the edge of the base plate (16) and is designed to receive a retaining means (24), in particular a screw, wherein at least one weakened area (26) with at least a lesser plate thickness is provided between the receiving area (20) and at least one mounting hole (22), wherein the base plate (16) has several mounting holes (22) and at least one weakened area (26), wherein the weakened area (26) is provided between the receiving area (20) and the mounting hole (22) nearest to the receiving area (20), characterized in that the weakened area (26) is an embossing or is formed by an opening, wherein the base plate (16) has a constant thickness outside the weakened area (26).

Inventors

  • Christian Fischer
  • Frank Rütten

Assignees

  • BAYERISCHE MOTOREN WERKE AKTIENGESELLSCHAFT

Dates

Publication Date
20260513
Application Date
20130723

Claims (10)

  1. Base plate (16) for a vehicle heat exchanger with a receiving area (20) to which a heat exchanger (14) or a cooling package (18) of a heat exchanger (14) is attached, and at least one mounting hole (22) which is arranged at the edge of the base plate (16) and is designed to receive a retaining element (24), in particular a screw, wherein at least one weakened area (26) with at least a lesser plate thickness is provided between the receiving area (20) and at least one mounting hole (22), wherein the base plate (16) has several mounting holes (22) and at least one weakened area (26), wherein the weakened area (26) is provided between the receiving area (20) and the mounting hole (22) nearest to the receiving area (20), characterized in that the weakened area (26) is an embossing or is formed by an opening, wherein the The base plate (16) has a constant thickness outside the weakened area (26).
  2. Base plate (16) according Claim 1 , characterized in that the weakened area (26) increases the effective distance between the holding means (24) and the heat exchanger (14) or the cooling package (18) of the heat exchanger (14) compared to an arrangement without a weakened area (26).
  3. Base plate (16) according Claim 1 or 2 , characterized in that the weakened area (26) is spaced away from the mounting hole (22).
  4. Base plate (16) according to one of the preceding claims, characterized in that the weakened area (26) is adapted in its shape, as seen in a top view of the base plate (16), to at least one section of the outer contour of the fastening hole (22).
  5. Base plate (16) according to one of the preceding claims, characterized in that the weakened area (26) is arc-shaped.
  6. Base plate (16) according to one of the preceding claims, characterized in that the embossing is provided on the same side of the base plate (16) as the receiving area (20).
  7. Base plate (16) according to one of the preceding claims, characterized in that the base plate (16) is made of sheet metal.
  8. Heat exchanger (14) with a base plate (16) according to one of the preceding claims and a cooling package (18) arranged at the receiving area (20) of the base plate (16).
  9. Oil filter module with a heat exchanger (14) according to Claim 8 .
  10. Method for manufacturing a base plate (16) for a heat exchanger (14) according to one of the Claims 1 until 7 , wherein the base plate (16) is punched out from a semi-finished product and during the punching process the embossing is simultaneously introduced into the base plate (16) or the weakened area is simultaneously punched out.

Description

The invention relates to a base plate for a vehicle heat exchanger, a method for its manufacture, a heat exchanger with a base plate and an oil filter module with a heat exchanger. Heat exchangers are used in vehicle construction to regulate the temperature of operating fluids, especially engine oil. They are typically located in the engine compartment and are mounted on a base plate, which is used to attach the heat exchanger to the vehicle. For this purpose, mounting holes are provided along the edge of the base plate, through which fasteners, usually screws, can be inserted. Due to the limited space in the engine compartment, the shape and geometry of the base plate are restricted, so the mounting holes are positioned very close to the heat exchanger, more precisely to the cooling element of the heat exchanger. Such heat exchangers are used in the DE 10 2012 204 729 A1 , DE 20 2011 002 197 U1 , DE 10 2011 080 824 A1 , DE 103 47 181 A1 and DE 10 2005 048 452 A1 described. In the DE 203 14 687 U1 An oil module with such a heat exchanger is disclosed. During operation, coolant and oil pulsations act on the heat exchanger, causing stresses in the base plate or the solder joint between the cooling pack and the base plate due to bending stress. These stresses are particularly high in the areas between the heat exchanger and the mounting holes and increase with decreasing distance between the mounting hole and the heat exchanger. Especially high stresses can reduce the service life of the heat exchanger, the solder joint between the cooling pack and the base plate, and the base plate itself. Accordingly, the object of the invention is to provide a heat exchanger in which large stresses in the base plate are avoided without increasing the manufacturing costs or the required installation space. This problem is solved by a base plate for a vehicle heat exchanger according to claim 1. By weakening the base plate between the receiving area and the mounting hole, the distance between the contact surface of the screw with the base plate on the one hand and a solder lug of the heat exchanger or cooling pack on the other hand is increased. This simply extends the service life of the base plate or the solder lug. It also relieves the area where the greatest stress would occur by reducing the load. The weakened area is either an embossing, making it easy to implement, or it is formed by a through-hole, which reduces the weight of the base plate. Furthermore, the base plate has a consistent thickness outside the weakened area, making it easy to manufacture. The weakened area is formed by an abrupt reduction in material thickness, so that this area is surrounded and clearly defined. Preferably, the weakened area increases the effective distance between the holding means and the heat exchanger or the cooling package of the heat exchanger compared to an arrangement without a weakened area, thereby reducing stresses that occur. The weakened area can be spaced away from the mounting hole, so that the function of the mounting hole is not impaired by the weakened area or the permissible surface pressure is not exceeded. For example, the weakened area, viewed from above, is adapted in its shape to at least one adjacent section of the outer contour of the mounting hole, so that the weakened area can optimally compensate for the stress arising between the mounting hole and the receiving area. In one version, the weakened area is arc-shaped. This allows for optimal adaptation to a circular mounting hole. In one embodiment of the invention, the embossing is provided on the same side of the base plate as the receiving area, whereby the embossing is exposed in the assembled state of the base plate. The base plate can advantageously be made of sheet metal, as sheet metal is easy to work with. The problem is further solved by a heat exchanger with a base plate according to the invention and a cooling package that is arranged at the receiving area of the base plate. The invention provides an oil filter module with a heat exchanger according to the invention. The invention further relates to a method for manufacturing a base plate for a heat exchanger, wherein the base plate is stamped from a semi-finished product and, during the stamping process, the embossing is simultaneously introduced into the base plate or the weakened area is stamped out. In this way, it is possible to manufacture a base plate with an embossing without additional manufacturing costs. Further features and advantages of the invention will become apparent from the following description and from the accompanying drawings, to which reference is made. The drawings show: - 1 a top view of an oil filter module according to the invention with a heat exchanger according to the invention and a base plate according to the invention, and - 2 a perspective view of a section of a heat exchanger according to the invention with a base plate according to the invention. In 1 An oil fil