EP1852943A1 - Contact d'épreuve - Google Patents

Contact d'épreuve Download PDF

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Publication number
EP1852943A1
EP1852943A1 EP07008048A EP07008048A EP1852943A1 EP 1852943 A1 EP1852943 A1 EP 1852943A1 EP 07008048 A EP07008048 A EP 07008048A EP 07008048 A EP07008048 A EP 07008048A EP 1852943 A1 EP1852943 A1 EP 1852943A1
Authority
EP
European Patent Office
Prior art keywords
contact
spring
pressure
longitudinal axis
spring element
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
EP07008048A
Other languages
German (de)
English (en)
Inventor
Anja Schneider
Henning Dr. Taschke
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Lumberg Connect GmbH
Original Assignee
Lumberg Connect GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Lumberg Connect GmbH filed Critical Lumberg Connect GmbH
Publication of EP1852943A1 publication Critical patent/EP1852943A1/fr
Ceased legal-status Critical Current

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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
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/02—Contact members
    • H01R13/22—Contacts for co-operating by abutting
    • H01R13/24—Contacts for co-operating by abutting resilient; resiliently-mounted
    • H01R13/2407—Contacts for co-operating by abutting resilient; resiliently-mounted characterized by the resilient means
    • H01R13/2428—Contacts for co-operating by abutting resilient; resiliently-mounted characterized by the resilient means using meander springs
    • 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
    • H01R4/24—Connections using contact members penetrating or cutting insulation or cable strands
    • H01R4/2416—Connections using contact members penetrating or cutting insulation or cable strands the contact members having insulation-cutting edges, e.g. of tuning fork type
    • H01R4/242—Connections using contact members penetrating or cutting insulation or cable strands the contact members having insulation-cutting edges, e.g. of tuning fork type the contact members being plates having a single slot

Definitions

  • the invention relates to a pressure contact for the pressure-locked connection with at least one mating contact, comprising two contact portions, which lie opposite one another on a contact portion to contact portion extending contact longitudinal axis and a meander-like spring element having spring portions, each connecting two meander loops, wherein the contact portions by means of Spring element are arranged spaced from each other, which receives the pressure exerted by the at least one mating contact on at least one contact portion pressing force under construction of a spring tension and allows the contact force evading movement of this contact portion on the contact longitudinal axis.
  • Pressure contacts with meandering spring element are, for example US 6,783,405 B1 and WO 96/28865 known and usually part of a connector.
  • the contact with its spring element is arranged either in the plug or in the socket of the connector and enters with a suitable mating contact a pressure-tight, electrical connection, while the housing parts of the plug and socket, a plug-in connection maintaining positive connection, such as a latching, received.
  • pressure contacts such as WO 96/28865 discloses, in particular interfaces for mobile communication devices such as mobile phones. By means of the pressure contacts, it is possible to transmit various data signals and / or to charge the internal battery of a mobile phone.
  • the quality of the connection between pressure contact and mating contact is essentially influenced by the spring tension of the spring element of the contact pressure and an exact positioning of the contact portions of pressure contact and mating contact with each other.
  • the pressure force is determined in those known from the prior art transversely loaded meander spring elements of the number of meander turns and thus ultimately of the spatial extent of the meander.
  • a transversely loaded meandering spring in the sense of this application, a meander spring is designated whose two meandering loops connecting spring section is aligned substantially transversely to the pressing force or transversely to the contact longitudinal axis.
  • the object of the invention is therefore to provide a contact pressure, which has a smaller space requirement while maintaining a secure electrical connection with a mating contact.
  • Task is in particular to create a contact pressure, which provides a self-contacting contact portion even at high spring forces.
  • a contact pressure with the features of claim 1, in particular with the characterizing features, according to which a two meander loops connecting, central spring portion is provided, which has a center located on the contact axis center, wherein at each meander loop of the central spring portion at least one further spring section connects, which includes an acute angle ⁇ less than 90 ° with the contact longitudinal axis.
  • Such a spring element builds at the same spring constant much smaller than known meandering spring elements.
  • the spring stresses occurring on both sides of the contact longitudinal axis in the spring element act in opposite directions, so that the spring element itself stabilizes.
  • the contact section therefore does not require a separate guide for safe movement on the contact longitudinal axis. Due to the self-guidance of the contact portion, the contact surface of the mating contact can be reduced to the extent necessary for a secure connection, as a contact pin-sided tilting is reliably avoided.
  • An embodiment provides that the further spring sections are formed substantially parallel to the contact longitudinal axis, in particular, when the central, two meander loops connecting spring sections with the contact longitudinal axis forms an angle ⁇ smaller than 90 °. This embodiment ensures a very secure self-guidance of the pressure contact.
  • an identical number of spring sections is arranged on both sides of the contact longitudinal axis, wherein the spring element is formed point-symmetrical to the center of the central spring portion, whereby the spring forces occurring on both sides of the contact longitudinal axis in the spring element are identical in magnitude, but opposite.
  • the spring element is designed such that the central spring portion of the spring element is substantially free of stress when building a spring tension, in particular when the spring element performs a rotational movement about the symmetry point under construction of the spring tension.
  • Such a configuration leads to a spiral-like contraction or compression of the spring element of the pressure contact according to the invention, so that the space required by the spring element in a tensioned state is further reduced.
  • the orientation of the central spring portion of the spring element to the contact longitudinal axis is one of the factors influencing the spring tension of the spring element and thus the contact pressure of the contact portion. According to preferred embodiments, therefore, the central spring section intersects the Contact longitudinal axis at an angle of less than 60 ° or less than 45 ° or less than 30 °. Any other acute angle, ie angle smaller than 90 ° to the contact longitudinal axis are conceivable, depending on the pressure to be reached.
  • the further spring sections are curved in the manner of C-springs.
  • curved spring sections are also aligned substantially parallel to the contact longitudinal axis, as long as the longitudinal axis of the curved spring sections is aligned substantially parallel to the contact longitudinal axis.
  • Such spring sections make it possible to further reduce the design of the contact pressure.
  • the self-guidance of the contact portion i. its exclusive movement along the contact longitudinal axis is further improved if at least one contact section has two contact feet arranged at a distance from one another, in particular if they are arranged symmetrically with respect to the contact longitudinal axis.
  • the contact portions and the spring element are formed materially cohesively, particularly preferably as a leaf spring.
  • the contact according to the invention can be designed as a so-called board-to-board connector in that both contact sections form a pressure-locked connection, each with an associated mating contact.
  • a board-to-board contact connects in the sense of this embodiment interconnects or contact pads of two printed circuit boards exclusively pressure-locking, which does not exclude that this pressure-locked connection is secured by positive engagement or other types of connection, for example, a contact housing.
  • the pressure contact in the region of the center of the central spring section has a bearing by means of which the spring element is pivotably mounted in a housing. This allows a housing-fixed arrangement of the contact, without hindering the above-mentioned rotary movement of the spring element.
  • the pressure contact is characterized by the fact that exactly one central, two meander loops connecting spring section is present.
  • the invention further relates to a An horrverbinder according to the preamble of claim 17, which is characterized by the formation of the contact according to one of claims 1 to 16.
  • a pressure contact is uniformly identified by the reference numeral 10.
  • Figs. 14 and 15 illustrate the prior art WO 96/28865 , wherein the reference numerals have been changed from the aforementioned document.
  • a pressure contact 10 which has a first contact portion 11 and a second contact portion 12.
  • the contact portions 11 and 12 are arranged spaced apart by means of a meander-like spring element 13.
  • a contact longitudinal axis L extends from the first contact portion 11 to the second contact portion 12.
  • the pressure contact 10 is mounted in a housing 14, the second contact portion 12 for the purpose of a pressure-locking connection with a mating contact, not shown, exiting the housing 14.
  • a mating contact is pressed in the direction of the arrow 15 against the contact section 12, which shifts in the direction of the arrow into the housing 14.
  • the spring element 13 is compressed accordion-like and builds an opposite to the arrow 15 spring force F, which ensures the pressure-tight connection between the contact portion 12 and mating contact.
  • the meander-like spring element 13 has a plurality of meander loops 16, which are connected by means of a plurality of spring sections 17.
  • the spring sections are arranged substantially transversely to the contact longitudinal axis L or transversely to the direction of arrow 15, which symbolizes a direction of movement of the contact section 12 deviating from the countercontact.
  • a spring element 13 is a transversely loaded spring element 13.
  • the transversely loaded spring element 13 causes an unsteady deflection of the contact section 12 in the direction of the arrow.
  • the contact section 12 tends to tilt on one side, the alternative tilting directions being symbolized by the arrows 18 and 19, respectively.
  • a suitable guide for the contact section 12 such as a suitable housing opening 20 shown in FIG. 15.
  • spring element 13 is a relatively soft spring with low spring constants, so that to ensure a certain pressure a spring element 13 with a corresponding number of meandering turns 16 or a large travel is necessary.
  • the invention proposes an improved contact pressure 10 shown below.
  • an inventive contact pressure 10 which also comprises a first contact portion 11 and a second contact portion 12 which are spaced from each other by a meander-like spring element 13.
  • the first contact portion 11 is formed as a cutting contact for connecting an electrical conductor such as a wire and also has a clamping portion 21, by means of which the pressure contact 10 can be arranged fixed to the housing in a housing of a An horrverbinders not shown.
  • Both contact sections 11, 12 lie on a contact longitudinal axis L. extending from contact section to contact section.
  • the spring element 13 has four meander loops 16 and two bends 22, which serve to connect the contact sections 11, 12.
  • the meander loops 16 are coupled to one another by means of spring sections 17 or a central spring section 23.
  • the central spring portion 23 can thus also be referred to as a connecting portion 23. It has a geometric center 24, which lies on the contact longitudinal axis L.
  • the spring portion 23 closes with the contact longitudinal axis L in the present example an angle ⁇ of about 45 ° and intersects the contact longitudinal axis.
  • the spring portions 17 arranged on both sides of the contact longitudinal axis L are aligned parallel to the contact longitudinal axis L.
  • FIG. 3 and 4 show a further embodiment of the pressure contact 10 according to the invention.
  • This is a so-called board-to-board contact, in which both Contact sections 11 and 12 are designed for a pressure-locked connection, each with a mating contact, not shown.
  • the contact section 12 deviates in the construction of a pressure-locked connection to the mating contact, not shown, in the direction of movement 15.
  • the same principle is used in the design of the contact portion 11 for a pressure-locked connection with an associated counterpart contact, not shown.
  • the contact portion 11 performs an opposite movement in the direction of arrow 25.
  • the spring element 13 of the pressure contact 10 as already described, tensioned.
  • it now exercises not only the pressing force F 12 on the contact spring portion 12 associated mating contact, but also an opposing pressure force F 11 on the contact spring portion 11 associated mating contact.
  • FIGS. 3 and 4 show a bearing 26 arranged in the region of the midpoint 24 of the central spring section 23.
  • This bearing 26 is designed so that the pressure contact 10 is fixed to the housing but pivotable about a physical center 24 in a housing, not shown can be.
  • FIGS. 1 and 2 represent a contact pressure 10
  • the spring element 13 has been extended with respect to the basic arrangement shown in FIGS. 1 and 2 by more meander loops 16, wherein FIG. 7 illustrates the state of the pressure contact 10 with tensioned spring element 13.
  • Such a spring element 13 allows for the same voltages a greater travel or it therefore springs relatively soft.
  • the spring element 13 in FIGS. 5 to 7 has six meander loops 17, which have a plurality of spring sections 17 and a central spring portion 23 are interconnected.
  • the central spring portion 23 is present on the contact longitudinal axis L, which is shown here for clarity only indicated.
  • the angle between the central spring portion 23 and contact longitudinal axis L is therefore 0 °.
  • the central spring portion 23 has a center 24, which is arranged on the contact longitudinal axis L.
  • Figs. 1 and 5 and 6 an essential principle of the preferred embodiments is disclosed. Attention should be paid to the central spring section 23, which has to include an acute angle smaller than 90 ° with the contact longitudinal axis L. Depending on the design of the spring element 13 is thus any angle between 0 ° and 90 ° between the central spring portion 23 and contact longitudinal axis L in the untensioned spring state in question. Each angle ⁇ between a spring portion 17, 23 and the contact longitudinal axis smaller than 90 ° is an acute angle in the context of the invention.
  • the spring element 13 comprises four meander loops 16, which are connected to each other by means of spring portions 17 and a central spring portion 23.
  • the central spring portion 23 is, as in the embodiment according to FIGS. 5 to 7, arranged on the contact longitudinal axis L, has a center 24 which lies on the contact longitudinal axis L and closes with the contact longitudinal axis L an angle of 0 °.
  • the spring portions 17 are formed curved in the manner of C-springs. One can thus speak of a spring element 13, which consists of several symmetrically coupled C-springs or C-shaped spring portions 17.
  • the spring element 13 is basically formed point-symmetrical to the center 24 of the central spring portion.
  • the spring portions 17 are preferably arranged parallel to the contact longitudinal axis L.
  • the spring portions 17 include an acute angle ⁇ with the contact longitudinal axis L, i. an angle smaller than 90 °.
  • the spring sections 17 are aligned in the unstressed state of the spring element 13 strictly parallel to the contact longitudinal axis L, in the tensioned state, they have a curvature and a slightly angular orientation to the contact longitudinal axis L.
  • FIGS. 11 and 12 the pressure contact 10 according to FIG. 1 or 2 is shown once again.
  • the spring element 13 is in a tension-free rest position
  • the spring element 13 is tensioned.
  • the lines B in FIG. 12 symbolize the width of the spring element 13 in the untensioned state according to FIG. 11.
  • the width here is the spatial extent of the spring element 13 measured transversely to the contact longitudinal axis L.
  • a spring force F L directed to the left occurs, which acts on the right spring section 17 and a spring force F R directed to the right, which acts on the left spring section 17.
  • the spring forces F R , F L are identical in magnitude, but opposite.
  • the spring forces F L and F R are representative of all the spring forces occurring in the spring element 13, wherein each spring force occurring on the one side of the contact longitudinal axis L is assigned a magnitude identical, but opposite spring force on the other side of the contact longitudinal axis. Therefore, the spring element 13 stabilizes automatically. At the same time tilted the central spring portion 23 when building a spring tension about its midpoint 24 in the direction of arrow 28, so that the spring element 13 in the contact portion 12 imposes a linear movement on the contact longitudinal axis L. The required in the prior art guide the contact portion 12 is thus unnecessary in the pressure contact 10 according to the invention due to this self-stabilizing design of the spring element 13.
  • the spring element 13 is constructed such that the spring portions 17 are arranged to each other such that the spring element 13 when building a spring tension around its center 24 performs a rotational movement.
  • the spring element 13 or the center 24 can move relative to, for example, a housing in which the pressure contact 10 is mounted. Under the rotational movement, the spring element 13 preferably contracts.
  • FIG. 13 shows the illustration of a comparison voltage measurement of the pressure contact 10 shown in FIGS. 5 to 7, which, however, can be applied to the other embodiments.
  • the C marked dark areas of the spring element 13 represent almost stress-free areas, the voltage is higher in increasingly brighter areas.
  • the dark areas marked D are in turn places of the highest spring tension. It is also clear from this representation that the stress ratios to the center of the central spring section 23, not shown here, are also mirror-symmetrical.
  • the central spring element 23 itself is largely stress-free, therefore itself has a negligible spring action. It is merely the connection of the other spring portions 17. Shown is beyond the rotational movement of the spring element 13 by means of arrows R to the center 24 of the central spring portion 23rd
  • the contact portion 12 formed to build a pressure-locked connection with a mating contact, not shown, on a special configuration.
  • the contact portion 12 forms mirror-symmetrical to the contact longitudinal axis of two contact feet 29, which are characterized exclusively in Fig. 2 accordingly.
  • the contact portion 12 thus forms a not shown counter-contact open, V-shaped contour.
  • the contact section 12 formed as described above prevents the danger due to its contact distance of unrolling or tipping further.
  • a connector 30, consisting of two housing parts 31 and 32 is shown.
  • the housing part 31 is arranged on a printed circuit board 33, which at position 34 a mating contact formed.
  • a latching hook of the housing part 31 is designated.
  • a pressure contact 10 In the housing part 32 is a pressure contact 10 according to the representations 5 to 7 fixed to the housing.
  • An electrical conductor, for example a cable, is designated by 36, which is connected to the pressure contact 10 by means of the contact section 11, which is designed as a cutting contact and is not designated in the drawings.
  • the housing part 32 is inserted into the housing part 31, wherein the latching hook 35 engages behind the housing part 32 and thus ensures a positive, secure connection of the two housing parts 31, 32.
  • the contact portion 12 has been moved in the direction of arrow 15 on the contact longitudinal axis L, whereby in the spring element 13 (not labeled) builds up a spring tension, which exerts a pressing force F on the mating contact 34 of the circuit board 33.
  • the contact section 12 moves linearly on the contact longitudinal axis L without being guided through parts of the housing 31 or 32.
  • the pressure contact according to the invention therefore achieves the advantage of a self-guiding, linear along the contact longitudinal axis extending movement at the same time high pressure forces and low space requirement. It is therefore particularly suitable for small to be designed An horrverbinder, for example, for mobile phones.
EP07008048A 2006-05-05 2007-04-20 Contact d'épreuve Ceased EP1852943A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102006020955A DE102006020955B4 (de) 2006-05-05 2006-05-05 Andruckkontakt und Andruckverbinder

Publications (1)

Publication Number Publication Date
EP1852943A1 true EP1852943A1 (fr) 2007-11-07

Family

ID=38181179

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07008048A Ceased EP1852943A1 (fr) 2006-05-05 2007-04-20 Contact d'épreuve

Country Status (4)

Country Link
US (1) US7445518B2 (fr)
EP (1) EP1852943A1 (fr)
CN (1) CN100589285C (fr)
DE (1) DE102006020955B4 (fr)

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EP2107606A1 (fr) * 2008-04-03 2009-10-07 ABB Research LTD Conducteur électrique mobile
WO2012136416A1 (fr) * 2011-04-06 2012-10-11 Robert Bosch Gmbh Connecteur pour liaison électrique directe avec un circuit imprimé
WO2014068005A1 (fr) * 2012-11-02 2014-05-08 Robert Bosch Gmbh Dispositif de contact, circuit

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US7575439B2 (en) * 2007-12-03 2009-08-18 Cheng Uei Precision Industry Co., Ltd. Speaker connector
TWM366195U (en) * 2009-01-20 2009-10-01 Hon Hai Prec Ind Co Ltd Electrical connector and contacts thereof
DE102010014980A1 (de) * 2010-04-14 2011-10-20 Pfisterer Kontaktsysteme Gmbh Elektrisches Steckverbindungselement und Steckverbindungsteil mit mehreren Steckverbindungselementen
BRPI1104452A2 (pt) 2010-09-07 2014-01-14 Framatome Connectors Int Terminal eétrico e conjunto de conector elétrico
BRPI1104453A2 (pt) 2010-09-07 2015-12-22 Framatome Connectors Int arranjo de conector elétrico e método para transmissão de dados de um módulo
US8702443B2 (en) 2011-06-01 2014-04-22 Fci Americas Technology Llc Electrical terminal having crimp members with different number of crimp teeth
JP2013164948A (ja) * 2012-02-10 2013-08-22 Yazaki Corp 端子金具，バルブソケット
EP2665128B1 (fr) * 2012-05-14 2017-12-13 TE Connectivity Germany GmbH Élément de contact IDC destiné à une fiche électrique
JP5946804B2 (ja) 2013-08-09 2016-07-06 ヒロセ電機株式会社 コネクタ
JP2016046020A (ja) * 2014-08-20 2016-04-04 富士通コンポーネント株式会社 コンタクト部材
DE102017109246B4 (de) * 2017-04-28 2024-02-15 Amphenol-Tuchel Electronics Gmbh Kontaktelementeanordnung
CN107565237B (zh) * 2017-05-12 2020-04-24 番禺得意精密电子工业有限公司 电连接器
CN108306138A (zh) * 2018-01-09 2018-07-20 番禺得意精密电子工业有限公司 电连接器
DE102021134576A1 (de) 2021-12-23 2023-06-29 iwis smart connect GmbH IDC-Schneidkontakt
CN114447660A (zh) * 2022-03-16 2022-05-06 上海航天科工电器研究院有限公司 一种端子及连接器

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Cited By (6)

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Publication number Priority date Publication date Assignee Title
EP2107606A1 (fr) * 2008-04-03 2009-10-07 ABB Research LTD Conducteur électrique mobile
US8410368B2 (en) 2008-04-03 2013-04-02 Abb Research Ltd. Electrical conductor
WO2012136416A1 (fr) * 2011-04-06 2012-10-11 Robert Bosch Gmbh Connecteur pour liaison électrique directe avec un circuit imprimé
KR101530903B1 (ko) * 2011-04-06 2015-07-06 로베르트 보쉬 게엠베하 인쇄 회로 기판상에서 직접적으로 접촉을 형성하기 위한 플러그 형 커넥터
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WO2014068005A1 (fr) * 2012-11-02 2014-05-08 Robert Bosch Gmbh Dispositif de contact, circuit

Also Published As

Publication number Publication date
DE102006020955A1 (de) 2007-11-15
CN100589285C (zh) 2010-02-10
US7445518B2 (en) 2008-11-04
CN101068057A (zh) 2007-11-07
US20070270009A1 (en) 2007-11-22
DE102006020955B4 (de) 2010-12-02

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