Classifications

• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
  • H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
  • H01R4/28—Clamped connections, spring connections
  • H01R4/30—Clamped connections, spring connections utilising a screw or nut clamping member
• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
  • H01H1/00—Contacts
  • H01H1/58—Electric connections to or between contacts; Terminals
  • H01H1/5855—Electric connections to or between contacts; Terminals characterised by the use of a wire clamping screw or nut
• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
  • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
  • H01H71/08—Terminals; Connections
• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
  • H01R43/00—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors
  • H01R43/16—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors for manufacturing contact members, e.g. by punching and by bending

Definitions

• Connection element for a switching device The invention relates to a connection element for a switching device with a connection bracket and a screw element with connection plate.
• connection cable and a switching device in particular a low-voltage switching device
• the thread for these screws is formed inexpensively in a passage in the connection part.
• Fig. 1 shows a connecting bracket 1, which has a U-shaped section 2 and an L-shaped section 3.
• a bore 5 with an internal thread 6 is arranged in a leg 4 of the L section 3.
• This internal thread 6 serves to receive a screw 7 introduced from above with a connecting disk 8.
• the connecting parts use electrically good conducting materials with low mechanical strength values. If threads are formed in these materials as described above, the thread strengths for the connecting parts are insufficient.
• connection element for a switching device it is also known from the prior art, to position a nut under the connection part, in which the connection screw is screwed. The positioning of this nut takes place here by means of a corresponding contour in the housing or by an additional part, which is additionally mounted in the housing.
• This embodiment is apparent from Fig. 2.
• a connection bracket 1 with a U-shaped section 2 and an L-shaped extension is shown.
• section 3 which has a bore 5 in a leg 4 of the connecting bracket 1, through which a screw 7 with a connecting disk 8 can be inserted.
• a nut 9 is arranged, through which the screw 7 is guided.
• a contour 10 which is formed either as an additional part or as a molding in the housing. The disadvantage of this embodiment is that an additional part for positioning the nut is needed, which also requires additional space.
• the object of the present invention is to provide a connection element for a switching device, which provides a secure thread resistance for the connection parts and also process technology allows easy handling.
• connection element for a switching device with a terminal bracket having a bore, and a screw with connection plate is characterized in that the screw is fastened by a Einpressteil, in particular with a thread on the terminal bracket.
• a press-in part with a thread preferably an internal thread for the terminal screw, is pressed into this hole.
• a one-pressing part with an external thread is conceivable, which serves as a threaded bolt and on which then a nut is screwed.
• the screw with the Einpressteil is made in one piece.
• connections are made here between different components via press-fit parts, which are pressed into the workpiece to form connections with large connection and holding forces.
• Such Einpressmaschine are also used to control individual components and cost-effectively connect with each other. Due to the controlled compression of the press-fit parts provided for the connection, the compounds achieved with them can also be used to meet far-reaching requirements.
• Einpressmaschine can be inserted with different injection forces in a workpiece, so that they can withstand especially large tensile or compressive forces.
• the press-fit parts according to the invention are provided with at least one knurl, which has a toothing or material grooves surrounding the press-fit part.
• the knurls intersect when pressing a Einpressteil in a workpiece in the wall of a recess provided for pressing and thus prevent upon application of the compressed press-fit with a torque twisting thereof in the recess.
• the press-in part in particular a press-in nut has a bore which is provided at least in sections with a thread, in particular an internal thread.
• This thread allows the inclusion of a screw with washer or nut, can be fixed through the possible connection lines.
• a toothed ring of cutting teeth is arranged around the bore.
• An essential idea of the invention is that the inserted and pressed into the recess of the workpiece shaft of the press-in part has at least two different Einpresskonturen.
• the press-in contours here are teeth, grooves or material projections that encircle the shaft.
• the provision of two different Einpresskonturen basically allows the Einpressdimensionen or Einpressgeometrien better tune to the flow behavior of the material of the workpiece better, so that when pressing the press-fit into the
• the press-in contours may in particular be arranged such that an engagement of the material of the workpiece as a result of the material deformation At different times during the pressing takes place and consequently different material sections with different injection contours come into engagement.
• the forms of compression according to the invention may include pressing the insert into a recess of a workpiece, wherein the connection between the insert and the workpiece results from a material flow of the insert and / or the workpiece as a result of the insertion process.
• pressing can be encompassed, in which the press-in part is mechanically formed after insertion of the press-fit part into the recess of the workpiece, in particular a shank is widened so that a connection between press-fit part and workpiece results.
• a pressing may be included, in which the workpiece is mechanically formed after the insertion of the press-fit into the recess of the workpiece, so that as a result of the material flow of the material of the workpiece in attachment areas of the press-fit results in a connection between press-fit and workpiece.
• all mixed forms of this injection molding can also be included.
• the Einpressteil may be formed in particular cylindrical for this process. However, any other fit for the Einpressteil is conceivable.
• the press-in part is pressed in by at least two different press-in contours on the connection bracket.
• the provision of two different Einpresskonturen basically allows the Einpressdimensionen or Einpressgeometrien better tune to the flow behavior of the material of the workpiece, so that when pressing the Einpressteils in the recess of the workpiece better engagement of the material of the workpiece relate to the teeth. Rough grooves or around the material projections of Einpresskonturen is made possible.
• the at least two press-in contours are offset from one another by a non-knurled section of the shank, in particular by a non-knurled groove.
• material can also flow into the non-knurled section of the shank or into the non-knurled groove and thus permits targeted mechanical influencing and control of the material deformation during the pressing.
• the non-knurled portion of the shank or the non-knurled groove can consequently improve the engagement of the material of the workpiece in one of the at least two knurls as a result of the deflection of the material.
• the material flowing into the non-knurled section of the shank or into the non-knurled groove secures the press-fit part by means of an improved holding force with respect to tensile and compressive forces acting on the press-fit part. Accordingly, it is also possible to ensure the anchoring of the press-fit in the workpiece only on the basis of the non-knurled portion of the shaft or in the non-knurled groove material flowing.
• the Einpresskonturen are formed as a cylindrical extension or as a sprocket of cutting teeth. Due to these different injection contours, it is basically possible to better tune the injection dimensions or injection geometries to the flow behavior of the material of the workpiece, so that during pressing of the insert into the recess of the workpiece better engagement of the material of the workpiece in the teeth or grooves or the material protrusions the Einpresskonturen is enabled. Consequently, even with unfavorable flow behavior of the workpiece, for example, in a workpiece whose material has a high toughness, the combination of at least two different Einpresskonturen on two mutually different shank portions still ensure sufficient rotational fixation.
• the press-in contours may in particular be arranged such that an engagement of the material of the workpiece as a result of the material deformation takes place at different times during the pressing and consequently different material sections with respectively different press-in contours engage.
• the pressed-in part with thread and the connecting bracket are the same temperature during the pressing process.
• the material of the pressed-in part with thread would contract somewhat, or it would be widened somewhat as a result of an increase in the temperature of the connecting clip.
• the workpieces do not have to be subjected to a temperature change.
• connection element according to the invention including the press-in part is completely finished with a thread and in the device mounting only a part is mounted. This is associated with a cost reduction for machines, assembly processes and warehousing. Due to the corresponding shape of the pressed-in part with thread for the connection screw, bending of the connection element when connecting the connection wire is prevented. The thread strength of the connection point thus corresponds to the specifications.
• Figure 1 is a perspective view of a connecting bracket with terminal screw and connection plate from the prior art.
• 2 shows a perspective illustration of a connection bracket with terminal screw and connection disk and additional prior art nut;
• FIG. 3 is a perspective view of a connection element according to the invention with a threaded insert part
• FIG. 4 shows a perspective view of an inventive press-fit part with thread
• FIG. 5 shows a perspective view of an insert part from FIG. 4 with an internal thread
• FIG. 6 is a sectional view of the press-fit part pressed into a workpiece.
• connection bracket 1 from the prior art, which has a U-shaped section 2 and an L-shaped section 3.
• a leg 4 of the L-section 3 a bore 5 is arranged with an internal thread 6. This internal thread 6 serves to insert one from above
• FIG. 2 shows a further embodiment of a connecting bracket with screw from the prior art.
• a connecting bracket 1 is shown with a U-shaped portion 2 and an L-shaped portion 3, which has a bore 5 in a leg 4 of the connecting bracket 1 through which a screw 7 can be inserted with a connecting plate 8.
• a nut 9 is arranged, through which the screw 7 is guided.
• a contour 10 is formed either as an additional part or training in the housing.
• Fig. 3 shows an inventive connecting element 11 with a press-in part 12 with thread.
• the connecting element 11 according to the invention has a connecting bracket 13, which has a U-shaped section 14 and an L-shaped section 15 attached thereto.
• the L-shaped section 15 has a leg 16, in which a bore 16a for receiving a Screw 17 is formed.
• the screw 17 is guided through a connecting disk 18, the bore 16a in the leg 16 of the L-shaped portion 15 of the connecting bracket 13 and by the press-in part 12.
• the press-in part 12 is on the opposite side to the screw 17 in
• the press-in part 12 is shown.
• the press-in part 12 is preferably cylindrical and has an annular body 19 with a Stirnflä- chen Colour Suite 20, an outer circumferential surface 21, an at least partially provided with an internal thread 22 bore 23 and a seat surface area 24.
• the Einpressteil 12 also has Einpresskonturen, which is designed as a ring in the form of a cylindrical extension 25 in which the thread 22 is arranged, as well as in the form of a ring gear 26 which is disposed about the cylindrical extension 25 and rests on the Wegzan Scheme 24.
• the press-in part 12 according to the invention is shown with thread 22.
• Fig. 5 shows the thread 22 about the arranged cylindrical extension 25 and the ring gear 26, which serve as Einpresskonturen.
• FIG. 6 shows the press-in part 12 after the press-fitting process into a workpiece.
• this is the connecting bracket 13.
• Fig. 6 it is shown how attach the material of the connecting bracket 13 by the Einpresskonturen in the form of the cylindrical extension 25 and the ring gear 26 to the outer contours of the press-12. By this engagement of the workpiece material in the Einpresskonturen the press-in a sufficient rotational fixation is ensured.
• connection element according to the invention including the press-in part is completely finished with an internal thread and only a part is mounted in the device assembly. This is associated with a cost reduction for machines, assembly processes and warehousing. Due to the corresponding shape of the pressed-in part with a thread, in particular an internal thread for the connecting screw, bending of the connecting element when connecting the connecting wire is prevented. The thread strength of the connection point thus corresponds to the specifications.

Landscapes

• Automatic Assembly (AREA)
• Connection Of Plates (AREA)
• Clamps And Clips (AREA)
• Dowels (AREA)
• Power Conversion In General (AREA)

Priority Applications (5)

Applications Claiming Priority (1)

Publications (1)

Family

ID=43417110

Family Applications (1)

Country Status (5)

Citations (6)

Family Cites Families (8)

• 2010
  • 2010-05-20 CN CN201080066865.8A patent/CN102906940B/zh not_active Expired - Fee Related
  • 2010-05-20 WO PCT/EP2010/003103 patent/WO2011144225A1/de active Application Filing
  • 2010-05-20 EP EP10722940.3A patent/EP2548264B1/de not_active Revoked
  • 2010-05-20 BR BR112012029330A patent/BR112012029330B1/pt not_active IP Right Cessation
  • 2010-05-20 KR KR1020127033291A patent/KR101615121B1/ko active IP Right Grant

Patent Citations (6)

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