WO2011076388A1 - Electrical clamping device - Google Patents
Electrical clamping device Download PDFInfo
- Publication number
- WO2011076388A1 WO2011076388A1 PCT/EP2010/007836 EP2010007836W WO2011076388A1 WO 2011076388 A1 WO2011076388 A1 WO 2011076388A1 EP 2010007836 W EP2010007836 W EP 2010007836W WO 2011076388 A1 WO2011076388 A1 WO 2011076388A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- screw
- clamping device
- holding element
- electrical
- edge
- Prior art date
Links
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
- H01R4/301—Clamped connections, spring connections utilising a screw or nut clamping member having means for preventing complete unscrewing of screw or nut
-
- 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
- H01R4/34—Conductive members located under head of screw
Definitions
- the invention relates to an electrical clamping device according to the preamble of patent claim 1.
- terminals are used in which conductors are screwed fixed within a clamp body.
- an electrical connection of two or more conductors can take place while, according to a further embodiment, a correspondingly formed terminal body directly after establishing an inserted conductor, the electrical connection, for example within an electrical device produces.
- a clamping piece / nut can be arranged which can be moved up and down by means of a screw guided in the clamp body. A conductor inserted into the clamp body is fastened by screwing the clamp piece with the interposition of the conductor through the screw against the clamp body.
- terminals are often delivered in an open position in which insertion of a conductor is possible, so that this work step is omitted at the installation site. From the place of manufacture to the place of installation, various movements and vibrations act on the clamp, so that this open position can only be reliably ensured by additional devices.
- a known solution uses a so-called threaded brake, in which a stiffness of the screw is created by the screw thread is provided at a defined location with an irregularity. Often causes a multiple actuation of the screw irreparable damage to the thread or a reduction in the braking effect to the lack of function.
- the housing part has a smaller passage opening for a tool relative to a screw head.
- the screw head is rotated against an edge of the passage opening, so that an axial clamping of the screw between this housing part and the clamping body takes place.
- the clamping action can be increased by compliant casing materials or a beveled edge.
- this type of jamming can still be solved by vibrations and the screw can move to an undefined position within the clamp body.
- the exact positioning of the screw in the open position is manufacturing technology to accomplish only with complex and high-precision tools.
- the object of the present invention is to provide an electrical clamping device in which the screw of a clamp can be reliably and easily fixed in an open position.
- the invention according to claim 1 has the advantage that a positioning of a screw of a clamping device in an open position from production to the place of installation. In the open position, a force is exerted radially by a retaining element on a screw head, which effectively prevents an automatic turning of the screw. Furthermore, in the open position of the screw, a frictional engagement between the holding element and the screw head and slightly an axial force component between an upper-side housing part and the screw acts.
- the clamping device comprises a clamp with a clamp body, a screw guided therein and a clamping piece and a housing part arranged above the screw with a passage opening through which access to the screw by means of a tool is made possible.
- the passage opening is formed narrowed relative to the diameter of the screw head, so that a loss of the screw can be prevented.
- the access opening is for this purpose surrounded by an edge, in which at least one in particular cut and / or yieldingly designed retaining element is integrated.
- the holding element may be integrally connected to the housing part and may extend, preferably perpendicular to the edge, in the direction of the clamp body.
- the design of the holding element can influence the course of the force acting on the screw.
- a stepwise increase in force can be realized.
- An obliquely formed contact surface of the holding element may be advantageous, wherein a multi-stepped contact surface may also be used. may be useful, for example, for an initially low force and for a final maximum force.
- the length of the holding element contributes significantly to the fact that the positioning of the screw in the open position manufacturing technology can be realized with little effort. Since the screw head covers a path along the holding element, a sufficient holding force can be defined by a corresponding shape of the holding element at several points of the path. This eliminates the need for high-precision tools that need to be adjusted to exactly one defined breakpoint.
- the maximum adjustment of the screw can be limited by the edge of the passage opening or by a stop for the retaining element.
- the through-opening chamfers are formed close to the edge, so that the screw head is centered on the one hand by the holding element and on the other hand by the chamfers and / or the edge in the open position. As a result, a tilting of the screw is effectively avoided.
- a particularly advantageous use of the invention results in several adjacent terminals, which are covered by a common housing part, which does not have a separate attachment point to the rest of the housing at each terminal. Frequently, such housing parts are attached to a central location. In such a constellation, the previous solutions were problematic since at most two screws could be clamped effectively in an open position. A third screw is dependent on the prescribed by the other screws nip line and will usually interrupt this nip line, so that no satisfactory fixation of all screws is possible.
- each terminal is independent in terms of ensuring the open position.
- Several adjacent screws can be clamped independently in the open position, although the housing part is in one piece.
- the longitudinal extension of the retaining element is advantageous.
- a combination with the conventional technique is possible, for example, at least the holding element of a centrally located clamp should have a long clamping path.
- the clamping device is suitable for electrical installation devices, such as sockets or switches. These devices are assembled from individual housing parts, clamps and covers. Here, a common housing part cover several terminals and at the same time sufficiently ensure the open position of the screws. Further details, features and advantages of the invention will become apparent from the following description of a preferred embodiment with reference to the drawings.
- FIG. 1 is a schematic sectional view of an electrical socket socket with clamping device
- Fig. 2 is an enlarged sectional view through the socket base and by the clamping device with unfixed screw
- Fig. 3 is an enlarged sectional view through the socket base and by the clamping device with a fixed screw.
- FIG. 1 shows a socket base 1 of an electrical socket in a sectional view. Usual front covers are not shown zeihnerisch.
- the socket base 1 has a support ring 2 and a housing body 3auf, in which contact sockets 4 and a grounding strap 5 are arranged.
- the contact sockets 4 and the earthing strap 5 are each connected to a terminal 6 in which the corresponding wire (not shown) of an electric wire can be fixed.
- Each terminal 6 has a surrounding, electrically conductive terminal body 7 and a screw 8. Laterally of the clamp body 7, an opening 9 is formed for insertion of the wire. In an opening 10 of the upper wall 11 of the clamp body 7, the screw 8 is guided freely movable.
- a plate-shaped internally threaded clamping piece 13 is arranged, which is guided positively in the clamp body 7 and can be moved up and down upon rotation of the screw 8. By rotation of the screw 8, an inserted wire between the clamping piece 13 and the upper wall 11 of the clamp body 7 can be fixed.
- the housing part 14 Above the terminals 6 is a flat housing part 14, which covers all terminals 6 and is connected centrally at an attachment point 15 with the housing body 3 of the socket base 1.
- the housing part 14 has a through opening 16 above each terminal 6 on, by an access to a screw head 17 of the screw 8 by means of a tool is possible.
- the access opening 16 is formed narrowed relative to the diameter of the screw head 17, so that a loss of the screw 8 can be prevented.
- the through-opening 16 is surrounded by an edge 18, into which at least one holding element 19 cut free and designed to be flexible in the illustrated exemplary embodiment is integrated.
- the holding element 19 is integrally connected to the housing part 14 and extends in a wedge-shaped tapering perpendicular to the edge 18 in the direction of the clamp body 7.
- the connection of the holding element 19 to the housing part 14 is in one piece and without change in cross section.
- the required elasticity of the retaining element 19 can be achieved in particular by using thermoplastic materials.
- the clamping path and the clamping force can be defined.
- a stepped contact surface 20 is advantageous to realize a defined force curve.
- the maximum displacement of the screw 8 is limited by the edge 18 of the passage opening 16.
- Advantageously chamfers 21 are formed close to the edge, so that the screw head 17 is centered on the one hand by the holding element 19 and on the other hand by the chamfers 21 and / or the edge 18 in the open position. As a result, tilting of the screw 8 is effectively avoided.
- an unpopulated, not tightened terminal 6 is shown with undefined position of the screw 8. Such a configuration can change at any time by vibrations between different positions of the screw 8 and the clamping piece 13.
- an unpopulated clamp 6 is shown with a defined position of the screw 8.
- the screw head 17 comes into contact with the holding element 19.
- the previously free screw 8 slides frictionally along the stepped contact surface 20 of the holding element 19, which is radially deformed and / or moved outwardly. Due to the resilient material properties and the rebounding support of the retaining element 19, the screw 8 is fixed, wherein the screw head 17 is centered on the one hand by the retaining element 19 and on the other hand by the chamfers 21 and / or the edge 18 in the open position.
- the invention can be used with all adjacent terminals 6. By holding element 19 according to the invention each terminal 6 is independent in terms of ensuring the open position.
- the adjacent screws 8 can be clamped independently in the open position, although the housing part 14 is in one piece.
Landscapes
- Clamps And Clips (AREA)
- Connections Arranged To Contact A Plurality Of Conductors (AREA)
- Connections By Means Of Piercing Elements, Nuts, Or Screws (AREA)
Abstract
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
RU2012131524/07A RU2559295C2 (en) | 2009-12-24 | 2010-12-21 | Electric clamping device |
EP10803057.8A EP2502312B1 (en) | 2009-12-24 | 2010-12-21 | Electrical clamping device |
CN201080064712.XA CN102782944B (en) | 2009-12-24 | 2010-12-21 | electrical connection device |
BR112012015150A BR112012015150B1 (en) | 2009-12-24 | 2010-12-21 | fixture fixture |
ES10803057.8T ES2600956T3 (en) | 2009-12-24 | 2010-12-21 | Electric clamping device |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102009060373A DE102009060373A1 (en) | 2009-12-24 | 2009-12-24 | Electric clamping device |
DE102009060373.5 | 2009-12-24 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2011076388A1 true WO2011076388A1 (en) | 2011-06-30 |
Family
ID=43607656
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2010/007836 WO2011076388A1 (en) | 2009-12-24 | 2010-12-21 | Electrical clamping device |
Country Status (7)
Country | Link |
---|---|
EP (1) | EP2502312B1 (en) |
CN (1) | CN102782944B (en) |
BR (1) | BR112012015150B1 (en) |
DE (1) | DE102009060373A1 (en) |
ES (1) | ES2600956T3 (en) |
RU (1) | RU2559295C2 (en) |
WO (1) | WO2011076388A1 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR3071108B1 (en) * | 2017-09-13 | 2019-08-30 | Psa Automobiles Sa | SYSTEM FOR FIXING AN OMNIBUS BAR OF A MOTOR VEHICLE |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2392516A1 (en) * | 1977-05-27 | 1978-12-22 | Alsthom Cgee | Side-by-side assembly of junction blocks - is snap-fitted into semi-flexible strip mounted on printed circuit board |
GB2085672A (en) * | 1980-10-07 | 1982-04-28 | Breter Spa | Wire clamping structure for electrical sockets and plugs |
DE4038362A1 (en) * | 1990-12-01 | 1992-06-04 | Metz Albert Ria Electronic | Electrical lead clamp terminal - has adjacent clamp elements at 180 degrees to one another for zigzag configuration of soldering pins |
WO2004070756A1 (en) * | 2003-02-04 | 2004-08-19 | Siemens Aktiegesellschaft | Terminal clamping device for connecting an annular cable lug and corresponding electrical appliance |
WO2009068216A1 (en) * | 2007-11-30 | 2009-06-04 | Phoenix Contact Gmbh & Co. Kg | Arrangement for screw locking electric connecting terminals |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2563947B1 (en) * | 1984-05-02 | 1986-08-22 | Alsthom Cgee | PROTECTED TERMINAL CONNECTION ARRANGEMENT FOR ELECTRICAL EQUIPMENT |
DD266675A1 (en) * | 1987-12-17 | 1989-04-05 | Elektroinstallation So Veb | PROTECTIVE CONNECTOR TERMINAL TO EARTH LEVER ELECTRICAL PROTECTION CONTACT SOCKETS |
DD270185A1 (en) * | 1988-03-21 | 1989-07-19 | Sondershausen Elektro | PROTECTIVE CONNECTOR TERMINAL PREFERABLY FOR PROTECTIVE CONTACT SOCKET SOCKETS WITH LATERAL SPRING CONTACT |
FR2721142B1 (en) * | 1994-06-13 | 1996-07-19 | Schneider Electric Sa | Electrical device with a screw terminal. |
FR2723475B1 (en) * | 1994-08-08 | 1996-10-31 | Legrand Sa | CONNECTION TERMINAL, IN PARTICULAR SINGLE INPUT CONNECTION TERMINAL |
DE29621267U1 (en) * | 1996-12-06 | 1997-04-03 | Siemens AG, 80333 München | Device with screw clamp |
-
2009
- 2009-12-24 DE DE102009060373A patent/DE102009060373A1/en not_active Withdrawn
-
2010
- 2010-12-21 CN CN201080064712.XA patent/CN102782944B/en active Active
- 2010-12-21 WO PCT/EP2010/007836 patent/WO2011076388A1/en active Application Filing
- 2010-12-21 EP EP10803057.8A patent/EP2502312B1/en active Active
- 2010-12-21 ES ES10803057.8T patent/ES2600956T3/en active Active
- 2010-12-21 RU RU2012131524/07A patent/RU2559295C2/en active
- 2010-12-21 BR BR112012015150A patent/BR112012015150B1/en active IP Right Grant
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2392516A1 (en) * | 1977-05-27 | 1978-12-22 | Alsthom Cgee | Side-by-side assembly of junction blocks - is snap-fitted into semi-flexible strip mounted on printed circuit board |
GB2085672A (en) * | 1980-10-07 | 1982-04-28 | Breter Spa | Wire clamping structure for electrical sockets and plugs |
DE4038362A1 (en) * | 1990-12-01 | 1992-06-04 | Metz Albert Ria Electronic | Electrical lead clamp terminal - has adjacent clamp elements at 180 degrees to one another for zigzag configuration of soldering pins |
WO2004070756A1 (en) * | 2003-02-04 | 2004-08-19 | Siemens Aktiegesellschaft | Terminal clamping device for connecting an annular cable lug and corresponding electrical appliance |
WO2009068216A1 (en) * | 2007-11-30 | 2009-06-04 | Phoenix Contact Gmbh & Co. Kg | Arrangement for screw locking electric connecting terminals |
Also Published As
Publication number | Publication date |
---|---|
BR112012015150B1 (en) | 2019-09-10 |
CN102782944B (en) | 2016-08-31 |
EP2502312A1 (en) | 2012-09-26 |
DE102009060373A1 (en) | 2011-06-30 |
ES2600956T3 (en) | 2017-02-13 |
RU2559295C2 (en) | 2015-08-10 |
CN102782944A (en) | 2012-11-14 |
BR112012015150A2 (en) | 2016-07-12 |
EP2502312B1 (en) | 2016-08-03 |
RU2012131524A (en) | 2014-01-27 |
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