Connection of sheet metal components of a transmission

{
  "publication_number": "US8303460B2",
  "country": "US",
  "kind": "B2",
  "title": "Connection of sheet metal components of a transmission",
  "abstract": "The invention relates to a connection of sheet metal components of a transmission, wherein the connection has at least one form fit between at least one first sheet metal component and at least one second sheet metal component, and here, the form fit is formed by means of at least one journal which projects out of the first sheet metal component, wherein the journal engages into an opening, which at least partially corresponds to the outer contour of the journal, on the second sheet metal component.",
  "claims": [
    "1. A connection of sheet metal components of a transmission, the connection, comprising: at least one form fit between at least one first sheet metal component and at least one second sheet metal component, and at the same time the form fit being formed by at least one tenon projecting out of the first sheet metal component, the tenon having an outer contour including an externally conical portion, said tenon engaging into an orifice on the second sheet metal component, said orifice at least partially matching the outer contour of the tenon, wherein the tenon engages behind the second sheet metal component at least at an undercut of the second sheet metal component, and the sheet metal components are connected unreleasably to one another at the undercut, wherein the tenon is bushed out of the material of the first sheet metal component such that a depression is formed in the first sheet metal component on a rear side of the tenon which faces away from the second sheet metal component, and wherein the depression is of internally cylindrical design, an axis of symmetry of the depression being oriented in a direction in which the tenon projects, and at a same time the depression having an inside diameter which corresponds to 0.5 to 1.5 times a depth, codirectional with the axis of symmetry, of the depression.",
    "2. The connection as claimed in claim 1, wherein the free end, penetrating into the orifice, of the tenon is expanded radially outward in the manner of a bead and at the same time engages axially behind the undercut.",
    "3. The connection as claimed in claim 1, wherein the tenon is hollow on the inside.",
    "4. The connection as claimed in claim 1, wherein the tenon engages behind an undercut formed in the orifice.",
    "5. The connection as claimed in claim 1, wherein the depth of the depression is 0.3 to 0.9 times the wall thickness, codirectional with the axis of symmetry, of the first sheet metal component at the connection.",
    "6. The connection as claimed in claim 1, wherein the depression has an inside diameter which corresponds to 0.75 to 1.5 times an overall wall thickness of sheet metal components lying one against the other at the connection, and at the same time the overall wall thickness being the sum, considered codirectionally with the axis of symmetry, of the wall thickness of the first sheet metal component and the wall thickness of the second sheet metal component.",
    "7. The connection as claimed in claim 1, wherein the tenon and consequently the depression and also the undercut and a bead, engaging behind the undercut in the orifice, at the free end of the tenon are formed from portions of the sheet of the sheet metal components at the connection, the material of the portions having been displaced plastically, while the connection was being made, in one operation out of the sheet metal components lying one against the other.",
    "8. The connection as claimed in claim 1, wherein the tenon and consequently the depression and also the undercut and a bead, engaging behind the undercut in the orifice, at the free end of the tenon are formed from portions of the sheet of the sheet metal components at the connection, the material of the portions having been displaced plastically, while the connection was being made, in one operation out of the sheet metal components lying one against the other, and in that the depression is designed to be internally cylindrically hollow and the tenon is designed to be hollow on the inside, the axis of symmetry of the depression being oriented in the direction in which the tenon projects, and the inside diameter of the depression being 1.8 to 8 times the largest free inner dimension of the tenon.",
    "9. The connection as claimed in claim 1, wherein the tenon and consequently the depression and also the undercut and a bead, engaging behind the undercut in the orifice, at the free end of the tenon are formed from portions of the sheet of the sheet metal components at the connection, the material of the portions having been displaced plastically, while the connection was being made, in one operation out of the sheet metal components lying one against the other, and in that the depression is designed to be internally cylindrically hollow and the tenon is designed to be hollow on the inside, the axis of symmetry of the depression being oriented in the direction in which the tenon projects, and the tenon having inner dimensions which correspond to 0.2 to 0.8 times an overall wall thickness of the sheet metal components lying one against the other at the connection, and at the same time the overall wall thickness being the sum, considered codirectionally with the axis of symmetry, of the wall thickness of the first sheet metal component and the wall thickness of the second sheet metal component.",
    "10. The connection as claimed in claim 1, wherein the tenon and consequently the depression and also the undercut and a bead, engaging behind the undercut in the orifice, at the free end of the tenon are formed from portions of the sheet of the sheet metal components at the connection, the material of the portions having been displaced plastically, while the connection was being made, in one operation out of the sheet metal components lying one against the other, and in that the second sheet metal component has a bead formed from part of the plastically displaced material, the bead projecting out of the second sheet metal component after the undercut in a direction codirectional with the axis of symmetry.",
    "11. The connection as claimed in claim 10, wherein a largest radial dimension and therefore outer dimension, directed transversely to the axis of symmetry, of the bead is 0.5 to 1.0 times the inside diameter of the depression.",
    "12. A transmission having a connection as claimed in claim 1, wherein at least one of the sheet metal components is a planet carrier of a planetary drive.",
    "13. The connection as claimed in claim 1, wherein the depression has a bottom surface on the rear side of the tenon, the bottom surface being perpendicular to the direction in which the tenon projects."
  ],
  "description_excerpt": "This application is a 371 of PCT/EP2007/053211 filed Apr. 3, 2007, which in turn claims the priority of DE 10 2006 018496.3 filed Apr. 21, 2006, the priority of both applications is hereby claimed and both applications are incorporated by reference herein. The invention relates to a connection of sheet metal components of a transmission, the connection having at least one form fit between at least one first sheet metal component and at least one second sheet metal component, and at the same time the form fit being formed by means of at least one tenon projecting out of the first sheet metal component, the tenon engaging into an orifice on the second sheet metal component, said orifice at least partially matching the outer contour of the tenon. The invention relates, further, to a transmission having a connection of this type.\n\nConnections of this type are described in DE 26 52 652 A1. The form fit ensures that components rotating jointly about an axis of rotation are secured one to the other fixedly in terms of torque. In other cases, a connection of this type ensures that the parts do not twist with respect to one another or move with respect to one another in any other way. The last-mentioned case is described in DE 26 52 652 A1. A securing sheet for securing a planet bolt is additionally secured to the planet carrier by means of a bushing of the sheet of the planet carrier. Bushings of this type are produced by pressing or punch-pressing.",
  "cpc": [
    "F16H 57/082",
    "B21D 39/03",
    "F16B 2200/30",
    "F16H 57/02",
    "F16H 57/08",
    "Y10T 74/2186"
  ],
  "ipc": [
    "F16H 57/08"
  ],
  "assignees": [
    "JURJANZ RAMON",
    "SCHAEFFLER TECHNOLOGIES AG"
  ],
  "inventors": [
    "JURJANZ RAMON"
  ],
  "filing_date": "2007-04-03",
  "publication_date": "2012-11-06",
  "grant_date": "2012-11-06",
  "priority_date": "2006-04-21",
  "application_number": "US-29770907-A",
  "family_id": "38110393",
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  ]
}