Classifications

• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
  • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
  • F16B19/00—Bolts without screw-thread; Pins, including deformable elements; Rivets
  • F16B19/04—Rivets; Spigots or the like fastened by riveting
  • F16B19/08—Hollow rivets; Multi-part rivets
  • F16B19/083—Self-drilling rivets
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
  • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
  • F16B19/00—Bolts without screw-thread; Pins, including deformable elements; Rivets
  • F16B19/04—Rivets; Spigots or the like fastened by riveting
  • F16B19/08—Hollow rivets; Multi-part rivets
  • F16B19/10—Hollow rivets; Multi-part rivets fastened by expanding mechanically
  • F16B19/1027—Multi-part rivets
  • F16B19/1036—Blind rivets
  • F16B19/1045—Blind rivets fastened by a pull - mandrel or the like

Definitions

• the invention relates to a rivet connector consisting of a rivet sleeve and a rivet mandrel which can be inserted into the rivet sleeve and which has a bolt-shaped shaft and a head attachment which is arranged or embodied there and is larger than the diameter of the shaft and on which a drilling part is arranged or formed.
• the rivet sleeve has an internal thread over at least part of its length and the shaft of the rivet mandrel has an external thread corresponding to it over at least a part of its length, and wherein means for forming and forming on the rivet sleeve and / or on a stop flange formed thereon / or non-positive holding of the rivet sleeve with respect to the workpiece to be riveted and / or with a setting tool for the rivet connector.
• Such a rivet connector is known from DE-OS 17 75 430 or from US 34 53 927.
• a rivet connection is not made in such a way that the rivet mandrel is pulled out in the axial direction after inserting the rivet connector into a hole in the workpiece in order to deform the rear free end of the rivet sleeve during this process, but it is a question of this to effect the riveting itself by turning the mandrel.
• the rivet sleeve has an internal thread for the rivet mandrel and an outer thread to corresponding thereto, and the tensile force to deform the free end of the rivet sleeve is au f the. Head-f approach exerted by turning the rivet mandrel in the rivet sleeve.
• a rivet connector is known from DE-AS 14 75 216, in which the rivet sleeve is equipped with an internal thread and the rivet mandrel with an external thread, so that a rotational movement of the rivet mandrels? the riveting itself can be carried out.
• Problems arise with this known rivet connector insofar as the rotation of the rivet sleeve during the tightening of the rivet mandrel cannot be practically prevented, so that not only the workpiece could be damaged, but also the rivet itself does not offer sufficient security.
• a self-drilling blind rivet is known from DE-OS 19 63 526, which has a thickened portion at the area adjoining the top of the shaft of the rivet mandrel, a thread being formed on this thickened portion.
• Schi edlich are known from DE 32 46 625 AI and from DE 35 42 581 AI rivet connector without a drill part, in which the rivet sleeve when setting Process is not deformed, but the diameter of an additional sleeve arranged above the rivet mandrel is widened by the rivet sleeve.
• the object of the invention is to provide a solid rivet with a rivet fastener of the type mentioned initially, not allowing 'the applied torque can adversely affect the setting process.
• the rivet sleeve at least over a part of their length from their arrival to the 'tschflansch end facing away starting at least one at least annä ⁇ hernd axially parallel predetermined breaking line on.
• the free end of the rivet sleeve tears open at the locations specified by the predetermined breaking lines, so that individual tabs separate from one another and are pressed outwards. This not only achieves a very good riveted joint, but also considerably reduces the effort required to produce the riveted joint. This is a significant advantage over the known design, in which the rivet sleeve is only deformed axially or its diameter is widened. - ⁇ -
• the predetermined breaking lines are formed in the rivet sleeve has a particularly advantageous effect on the correct setting of the rivet connection. It is particularly expedient that the predetermined breaking lines, the rivet sleeve, are designed as notches running parallel to the axis, as grooves or as slots. It is achieved not only a einfa ⁇ che separation of the individual portions at the peripheral region of the rivet sleeve, but it is also ensured that this star-shaped tte practically always the same size motivatesabschm 'to the outside are bent. It is advantageous if the predetermined breaking lines are designed in the form of notches or grooves on the inner and / or on the outer wall of the rivet sleeve. The notches or grooves are formed in a • cross-section in a triangular or polygonal, trapezoidal or circular arc shape. It is expedient in this case if at least three predetermined breaking lines which are distributed around the circumference are provided.
• a further possibility for the proper tearing of the Endber p iches of the rivet sleeve during the setting process is that serrations or at the free end of the rivet sleeve at its end open towards the radially continuous slots, input slots are formed. In this way, predetermined breaking notches are created practically at the free end of the rivet sleeve, so that, if necessary, proper tearing can take place without additional predetermined breaking lines running in the axial direction.
• indentations or grooves of the predetermined breaking lines it is also possible for the indentations or grooves of the predetermined breaking lines to pass into slots, indentations or grooves which are radial through at the free end of the rivet sleeve. This is then a combination of the predetermined breaking lines running in the axial direction with the radially continuous slots, notches or groove lines.
• FIG. 1 shows a rivet connector in front view, the rivet sleeve being shown in sections;
• Fig. 2 is a side view of this rivet connector
• FIG. 4 shows a second embodiment of a rivet connector, the rivet sleeve also being shown cut away again;
• FIG. 6 shows a top view of the rivet connector according to FIG. 4;
• FIG. 7 shows a section through a rivet sleeve according to FIG. 4.
• Fig. 8 is a plan view of this rivet sleeve
• FIG. 10 is a view of the rivet mandrel of the rivet connector according to FIG. 4;
• FIG. 11 is a plan view of the rivet mandrel according to FIG. 10.
• De. y rivet fastener consists essentially of a Niethulse 1 and ei ⁇ nem mandrel 2.
• the mandrel 2 is of a saddle bolzenför IOEN l t un 3 or a an ⁇ eordneten ausoe stipulateen, geoenüber the fürmes ⁇ ser of the shaft larger head approach 4.
• the rivet sleeve 1 in this is provided with an internal thread 5, which is manufactured before or during the setting process.
• the shaft 3 of the rivet mandrel 2 is provided with a corresponding external thread 6.
• One or more projecting ribs are located on a connecting flange 7 formed on the rivet sleeve 1.
• the rivet fastener can be inserted into a prepared Oeffnunq in a workpiece "and set.
• a drilling part 8 is arranged or formed on the head projection 4.
• this is a platelet-shaped cutting portion and in the embodiment according to FIGS. 4, 5 and 10, a drilling part with a circular cross section.
• the internal thread 5 of the rivet sleeve 1 only extends over a portion of its length, whereas the free lower end of the rivet sleeve 1 forms a cylinder-shaped sleeve on the inside.
• the shaft 3 of the rivet mandrel 2 is provided with an external thread 6 over its entire length.
• an internal or external drive is designed to engage or use a tool.
• a conical widening 13 which enlarges towards the stop flange, is formed on the transition between the rivet sleeve 1 and the stop flange 7 on the outer surface of the rivet sleeve 1, which cone-shaped holding of the rivet sleeve se 1 guaranteed in the bore of the workpiece.
• two flats 14 lying diametrically opposite one another are provided on the stop flange 7 as tool engagement surfaces.
• the stop flange 7 of the rivet sleeve 1 could also be designed with a screw head-like configuration with tool engagement surfaces and / or slots.
• the rivet sleeve 1 is provided with an internal thread 5 over its entire length.
• the shaft 3 of the rivet mandrel 2 is shorter than the length of the rivet sleeve 1 and has an internal drive 16 at its free end.
• the mandrel 2 also protrudes after the rental connection has finally been set. Do not fertilize over the surface of the rivet sleeve 1, so that there is no need for a predetermined breaking point. There are therefore no lost parts and therefore no waste parts.
• the rivet sleeve 1 has over a part of its length, starting from its end facing away from the stop flange 7, at least approximately axially parallel predetermined breaking lines 17.
• These predetermined breaking lines 17 are formed by notches or grooves on the inner wall of the rivet sleeve 1, but could also be designed in the form of radially continuous slots. It would also be conceivable to form these predetermined breaking lines 17 on the outer wall of the rivet sleeve 1 or alternately on the inner and outer walls.
• the cross-sectional shape of the predetermined breaking lines 17 can be selected differently. It is conceivable to design the indentations or grooves in the form of a triangular or polygonal, trapezoidal or circular arc.
• the rivet mandrel 2 can be pulled into the rivet sleeve 1 when it continues to rotate in the same direction of rotation as when drilling, so that there is then proper riveting.
• rivets can also be - o _
• the predetermined breaking lines 17 are guided starting from their free end area over approximately 2/3 of the length of the rivet sleeve 1. This length is variable depending on the application of the rivet sleeve 1 or the rivet connector.
• the rivet sleeve 1 comes into direct contact with the head attachment 4 of the rivet mandrel 2.
• a sleeve which is deformable when the rivet connection is tightened is inserted between the free end of the rivet sleeve 1 and the head attachment 4 of the rivet mandrel 2.
• a sleeve made of rubber, plastic or aluminum could be provided here.
• the rivet mandrel 2 and the rivet sleeve 1 a material is selected which is optimal for the particular application. It is conceivable to manufacture the rivet sleeve 1 from metal or else from plastic. Such a variant would be of particular interest if the rivet sleeve 1 should have an insulating function.

Landscapes

• Engineering & Computer Science (AREA)
• General Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Insertion Pins And Rivets (AREA)

Applications Claiming Priority (2)

Publications (1)

Family

ID=6399461

Family Applications (1)

Country Status (9)

Families Citing this family (56)

Family Cites Families (16)

• 1990
  • 1990-02-05 DE DE4003373A patent/DE4003373C1/de not_active Expired - Fee Related
  • 1990-12-21 AU AU70789/91A patent/AU7078991A/en not_active Abandoned
  • 1990-12-21 CA CA002048690A patent/CA2048690A1/en not_active Abandoned
  • 1990-12-21 JP JP3503051A patent/JPH04504612A/ja active Pending
  • 1990-12-21 US US07/761,880 patent/US5183357A/en not_active Expired - Fee Related
  • 1990-12-21 EP EP91902705A patent/EP0466861A1/de not_active Withdrawn
  • 1990-12-21 WO PCT/EP1990/002291 patent/WO1991011628A1/de not_active Application Discontinuation
• 1991
  • 1991-10-04 FI FI914695A patent/FI914695A0/fi unknown
  • 1991-10-04 NO NO91913916A patent/NO913916L/no unknown

Non-Patent Citations (1)

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