EP1317029B1 - Stecker - Google Patents

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Publication number
EP1317029B1
EP1317029B1 EP01128536A EP01128536A EP1317029B1 EP 1317029 B1 EP1317029 B1 EP 1317029B1 EP 01128536 A EP01128536 A EP 01128536A EP 01128536 A EP01128536 A EP 01128536A EP 1317029 B1 EP1317029 B1 EP 1317029B1
Authority
EP
European Patent Office
Prior art keywords
plug
lead wire
pair
plate spring
rotary lever
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.)
Expired - Lifetime
Application number
EP01128536A
Other languages
English (en)
French (fr)
Other versions
EP1317029A1 (de
Inventor
Nobuyuki Mano
Takeshi Matsuda
Fumio Nozaki
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.)
SMK Corp
Original Assignee
SMK Corp
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
Priority to JP2000252926A priority Critical patent/JP3435132B2/ja
Application filed by SMK Corp filed Critical SMK Corp
Priority to DE60135131T priority patent/DE60135131D1/de
Priority to EP01128536A priority patent/EP1317029B1/de
Priority to CNB011427973A priority patent/CN1248372C/zh
Priority to US10/033,684 priority patent/US6712649B2/en
Publication of EP1317029A1 publication Critical patent/EP1317029A1/de
Application granted granted Critical
Publication of EP1317029B1 publication Critical patent/EP1317029B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • 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
    • H01R4/48—Clamped connections, spring connections utilising a spring, clip, or other resilient member
    • H01R4/4854—Clamped connections, spring connections utilising a spring, clip, or other resilient member using a wire spring
    • H01R4/4863—Coil spring
    • H01R4/4872—Coil spring axially compressed to retain wire end
    • 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
    • H01R13/64—Means for preventing incorrect coupling
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R24/00—Two-part coupling devices, or either of their cooperating parts, characterised by their overall structure
    • H01R24/20—Coupling parts carrying sockets, clips or analogous contacts and secured only to wire or cable
    • 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
    • H01R4/48—Clamped connections, spring connections utilising a spring, clip, or other resilient member
    • H01R4/4809—Clamped connections, spring connections utilising a spring, clip, or other resilient member using a leaf spring to bias the conductor toward the busbar
    • H01R4/4828—Spring-activating arrangements mounted on or integrally formed with the spring housing
    • H01R4/483—Pivoting arrangements, e.g. lever pushing on the spring
    • 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
    • H01R4/48—Clamped connections, spring connections utilising a spring, clip, or other resilient member
    • H01R4/4809—Clamped connections, spring connections utilising a spring, clip, or other resilient member using a leaf spring to bias the conductor toward the busbar
    • H01R4/484—Spring housing details
    • 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
    • H01R4/48—Clamped connections, spring connections utilising a spring, clip, or other resilient member
    • H01R4/489—Clamped connections, spring connections utilising a spring, clip, or other resilient member spring force increased by screw, cam, wedge, or other fastening means
    • 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
    • H01R4/50—Clamped connections, spring connections utilising a cam, wedge, cone or ball also combined with a screw
    • H01R4/5008—Clamped connections, spring connections utilising a cam, wedge, cone or ball also combined with a screw using rotatable cam
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R2103/00—Two poles
    • 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
    • H01R4/48—Clamped connections, spring connections utilising a spring, clip, or other resilient member
    • H01R4/4809—Clamped connections, spring connections utilising a spring, clip, or other resilient member using a leaf spring to bias the conductor toward the busbar
    • H01R4/48185—Clamped connections, spring connections utilising a spring, clip, or other resilient member using a leaf spring to bias the conductor toward the busbar adapted for axial insertion of a wire end
    • H01R4/4819—Clamped connections, spring connections utilising a spring, clip, or other resilient member using a leaf spring to bias the conductor toward the busbar adapted for axial insertion of a wire end the spring shape allowing insertion of the conductor end when the spring is unbiased
    • H01R4/4821—Single-blade spring
    • 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
    • H01R4/48—Clamped connections, spring connections utilising a spring, clip, or other resilient member
    • H01R4/4809—Clamped connections, spring connections utilising a spring, clip, or other resilient member using a leaf spring to bias the conductor toward the busbar
    • H01R4/4828—Spring-activating arrangements mounted on or integrally formed with the spring housing
    • H01R4/4833—Sliding arrangements, e.g. sliding button
    • 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
    • H01R4/48—Clamped connections, spring connections utilising a spring, clip, or other resilient member
    • H01R4/4809—Clamped connections, spring connections utilising a spring, clip, or other resilient member using a leaf spring to bias the conductor toward the busbar
    • H01R4/4846—Busbar details
    • H01R4/4848—Busbar integrally formed with the spring

Definitions

  • the present invention relates to a plug for connecting a pair of lead wires as defined in the preamble of claim 1.
  • a plug is known, for example, from US-A-2001-041476 .
  • an amplifier and a speaker are connected to each other by a pair of lead wires comprising a signal wire and a ground wire.
  • Connection between a lead wire and such an apparatus is usually established as follows. As shown in Fig. 11 , a lead wire is, at its skinned end, connected to a connector, called a lever terminal 103, attached to a terminal plate 101 provided on the back-surface side of the apparatus.
  • a lever 105 is rotated in a clockwise direction viewing the figure against a force of a torsion spring 107, and a skinned end of a lead wire 109 is inserted into an insertion hole 111 of the lever terminal 103.
  • the lead wire 109 is caught in between a metal contactor 113, which is formed integrally with the lever 105, and a metal contactor 117 formed inside a housing 115 of the lever terminal 103, and is thereby connected to the metal contactor 117.
  • the lead wire 109 Due to the difficulty of the connection operations, the lead wire 109 cannot be connected to the terminal with its skinned portions kept in a deeply-inserted state. Consequently, adjacent portions are brought into contact with each other, causing short circuits. Moreover, due to the poor visibility of the work area, the signal and ground wires, although they are usually distinguished from each other by their skin colors (red and black), might be inadvertently connected to reverse positions.
  • a connection method as shown in Fig. 13 has been proposed that employs a plug 125. Specifically, a signal wire 121 and a ground wire 123, used in pairs as a lead wire 109, are attached to the plug 125, and this plug 125 is inserted into a socket 127 provided on an amplifier side.
  • the connector terminal 129 is barrel-shaped, and its rear-end portion (left-end portion as shown in Fig. 13 ) has a U-shaped section.
  • the connector terminal 129 has its substantially cylindrical front-end portion formed as a contact terminal 133, into which a pin terminal acting as an amplifier-side terminal 131 is inserted so as to be in contact therewith.
  • connection recess 139 constituting the socket 127 which is engaged with the plugs 125.
  • Two apparatus-side terminals, or pin terminals 131, are formed inside the connection recess 139 so as to protrude, so that they correspond to the signal wire 121 and the ground wire 123, respectively.
  • connection recess 139 has a rib 141 formed on its inner side along the insertion direction so as to be protruded, and the plug 125 has, on its outer surface, a concave groove 143 which receives the rib 141.
  • the plug 125 and its corresponding socket 127 have the same skin color.
  • the connector shown in Fig. 13 lacks versatility.
  • the connector in question is unusable. That is, only the lead wire 109 attached in advance to the plug 125 may be acceptable.
  • two types of connectors i.e. the socket 127 and the lever terminal 103, need to be provided in a single back-surface panel of an amplifier or the like. This leads to an undesirable increase in the number of constituent components, causing space shortage in the back-surface panel.
  • the document US-A-2001-041 476 discloses a multi-channel audio system where a plurality of speakers are to be connected to a DVD-player.
  • the respective cable members are provided with plugs having a shape that makes it impossible to insert them upside-down into the amplifier thus preventing deliberately and by intent any interchange of right and left cables.
  • the plugs, the sockets and the cable members are provided with colour identifications, which are differently coloured in pairs to make sure that the proper plug is inserted into the correct socket.
  • the cable elements are fixedly attached to their plugs. For reasons of error prevention, the connections are provided in an unambiguous way avoiding any freedom or versatility for a user.
  • the present invention has been made to solve the above-described problems, and accordingly its object is to provide a plug that prevents reverse insertion of a signal and a ground wire arranged in pairs, prevents occurrence of short circuits in adjacent lead wires, facilitates connection of the lead wires, and allows connection of lead wires of any other type, i.e. offers versatility.
  • the plug is capable of connecting any lead wire of an arbitrary thickness to a plug-side contact terminal.
  • the plate spring is pressed, whereby the first or second lead wire is clamped between the plate spring and the inner wall of the plug housing, and is thereby electrically connected to the plug-side contact terminal which is integrally formed with the plate spring.
  • the pressure on the plate spring is released, whereby the first or second lead wire is unclamped and thus can be pulled out.
  • the plug further comprises:
  • the clamp means comprise:
  • the first or second lead wire is clamped between the plate spring and the rotary lever supported by the plug housing, and is thereby electrically connected to the plug-side contact terminal which is formed integrally with the plate spring.
  • the first or second lead wire is unclamped and thus can be pulled out.
  • the rotary lever is provided with an engagement portion.
  • the rotary lever is, at its engagement portion, fitted into the plug housing when set in a rotation position to allow the first or second lead wire to be gripped between the plate spring and the rotary lever supported by the plug housing, thus attaining a clamped state.
  • the rotary lever is engaged with the plug housing in a rotation position for achieving clamping, and is thus prevented from being rotated into an unclamped state by an inadvertent external force.
  • a pair of clamp means are provided having an integrally-formed rotary lever, and, by the rotation of the rotary lever, the first and second lead wires are clamped or unclamped concurrently.
  • the first and second lead wires can be concurrently clamped or unclamped by the rotation of the rotary lever.
  • the clamp means comprise a plate spring which is integrally formed with the plug-side contact terminal, and wherein in the clamp means the plate spring is provided with a contact plate both of which are formed integrally with the plug-side contact-terminal; wherein the plate spring is arranged opposite to the contact plate, the spring being loaded with a force that tends to move it toward a contact plate so that the first or second lead wire are gripped and clamped between the contact plate and the plate spring; and wherein a push button is provided for achieving unclamping by pressing the plate spring in a direction reverse to a force-loading direction.
  • the first or second lead wire is gripped between the contact plate and the plate spring which is loaded with a force that tends to move it toward the contact plate, and is thereby electrically connected to the plug-side contact terminal.
  • the plate spring is moved away from the contact plate, whereby the first or second lead wire is unclamped and thus can be pulled out.
  • the clamp means comprise:
  • the first or second lead wire is gripped between the contact plate and the pressing member which is loaded by the elastic means with a force that tends to move it toward the contact plate, and is thereby electrically connected to the plug-side contact terminal.
  • the pressing member is moved away from the contact plate, whereby the first or second lead wire is unclamped and thus can be pulled out.
  • the contact plate, the pressing member, and the push button are each arranged in pairs corresponding to each of the first and second lead wires.
  • the pressing members and the push buttons are each disposed at both ends of a U-shaped member serving as the elastic means.
  • the elastic means can be realized as a U-shaped member and thus serve also as a paired clamp means.
  • a pair of push buttons are grippingly pressed to unclamp the first and second lead wires concurrently.
  • a lead wire 3 to be connected to a plug 1 is realized by using a signal wire 5, serving as a first lead wire, and a ground wire 7, serving as a second lead wire, in combination.
  • the lead wire 3 is connected between an amplifier and a speaker in an audio apparatus.
  • a single plug 1 is provided to receive both of the ends of the signal wire 5 and the ground wire 7 for connection to the speaker side.
  • the plug 1 is inserted into a connection recess 139 constituted by a socket 127 which is formed in a terminal plate 137 provided on the back surface of the amplifier.
  • the socket 127 can also be fitted into the above-described plug 125 of the prior art example so as to be connected therewith.
  • the socket 127 will be identified with the same reference number and detailed descriptions thereof will be omitted.
  • a plug housing 15 has a rectangular vertical cross section which is substantially identical with but is slightly smaller than the vertical cross section of the connection recess 139.
  • the plug 1, just as with the plug 125, is so configured as to be insertable into and withdrawable from the connection recess 139.
  • the connection recess 139 has a projection, as a rib 141, formed on its inner surface.
  • the plug housing 15 has a recess, as a concave groove 19, formed on its outer surface. The concave groove 19 receives the rib 141 during insertion. Providing the rib 141 and the concave groove 19 makes asymmetrical the configuration of each of the connection recess 139 and the plug housing 15.
  • connection recess 139 has two pin terminals, as apparatus-side terminals 131, fixed to its inner part.
  • the apparatus-side terminals 131 are so formed as to protrude toward the opening of the connection recess 139.
  • the plug housing 15 has, on its front surface, a terminal insertion hole 23 into which the apparatus-side terminal 131 is inserted. Inside the terminal insertion hole 23 is situated a substantially cylindrical portion 27 of a plug-side contact terminal 25. That is, the substantially cylindrical portion 27 is split in half, and its elasticity maintains the elastic engagement of the pin terminal acting as the apparatus-side terminal 131.
  • the plug-side contact terminal 25 has an engagement pawl 29 engageable with an engagement window 31 of the plug housing.
  • the engagement pawl 29 is obtained by cutting and raising part of the plug-side contact terminal 25.
  • the engagement pawl 29 is engaged in the engagement window 31, thereby preventing the plug-side contact terminal 25 from being slipping off.
  • the plug-side contact terminal 25 has a plate spring 33 formed integrally and contiguously therewith that extends toward the rear side of the inner part of the plug housing 15. Formed on the rear surface of the plug housing 15 is an insertion hole 35 for insertion of the lead wire 3. A skinned portion 37 of the lead wire 3 is inserted through the insertion hole 35 to reach a position where it is arranged side by side with the plate spring 33. Then, as will be described later, the lead wire 3 is sandwiched between the elastically deformable plate spring 33 and an inner wall 51 of the plug housing 15.
  • the plug housing 15 has a rectangular section elongated in a direction in which the two plug-side contact terminals 25 are arranged.
  • a rotary lever 39 for pressing the plate spring 33.
  • the entire rotary lever 39 has the shape of an inverted L .
  • an arm portion 39a has, at its end, a pressing pawl 43 for applying a pressing force, and has, on both sides, a rotary shaft 41 which is protrudingly formed so as to rotate with respect to the side wall 15a.
  • the other arm portion 39b defining the L-configuration comes out of the plug housing 15 through a lever window 45 piercingly formed on the side wall 15a. On the surface of its exposed portion is formed a non-slip portion 47.
  • the plate spring 33 has, in its portion to be pressed by the pressing pawl 43, a pressing recess 49 which acts to position the rotary lever 39 in a state where the lead wire 3 is clamped, to pull on the lead wire 3, and to prevent the rotary lever 39 from being rotated by an unexpected external force.
  • the depth of the pressing recess 49 is determined such that the rotary lever 39, on the one hand, cannot be easily rotated by an unexpected external force, and, on the other hand, is rotated to allow the press pawl 43 to cross over the pressing recess 49 when some operating force is exerted thereon.
  • the above-described constituent components including the terminal insertion hole 23, the plug-side contact terminal 25, the insertion hole 35, and the rotary lever 39 are each provided in pairs corresponding to each of the signal and ground wires 5 and 7, and the two components constituting each pair are disposed in the upper and lower portions of the plug housing 15, respectively, in the lengthwise direction.
  • the outer arm portion 39b of the rotary lever 39 is raised by rotation to attain an unclamped state. Then, the plate spring 33 is moved away from the inner wall 51 of the plug housing 15 under its own elastic force, thereby creating an insertion space 38 for inserting the lead wire 3 between the inner wall 51 and the plate spring 33.
  • the signal wire 5 and the ground wire 7 are respectively fixed to the plug 1, thereby completing fixation of the lead wire 3.
  • the plug 1 is inserted into the connection recess 139 of the socket 127.
  • the insertion of the plug 1 can be successfully achieved only when the rib 141 of the connection recess 139 is fitted into the concave groove 19 of the plug 1.
  • This structure prevents the plug 1 from being inserted in a 180-degree inverted position, so that the signal and ground wires 5 and 7 cannot be connected to the pin terminals 131 in reversed polarity.
  • the plug 1 and its corresponding socket 127 may have the same skin color (red, yellow, blue, green, black, or white), so that wiring cannot be carried out on the wrong speaker.
  • the rotary lever 39 is raised to remove the existing lead wire 3, then the new lead wire, which has already been skinned, is inserted, and then the rotary lever 39 is lowered. Thereupon, the special lead wire can be connected to the plug with ease, and the plug 1 with the lead wire is connected to the apparatus-side socket 127.
  • connection between the lead wire 3 and the plug 1 unlike the case of a conventional lever terminal, need not be performed in the back-surface panel of the amplifier, and therefore workers can perform the connection operation smoothly without suffering from poor visibility. Consequently, the lead wire 3 can be connected to the plug 1 with its skinned portion 37 kept in a deeply-inserted state, thereby preventing short circuits caused by the contact among adjacent skinned portions.
  • the conventional plug 125 can be fitted to be connected therewith. Attached to the conventional plug 125 is the lead wire 109 press-fitted to the connector terminal 129.
  • connection of the plug 1, attached to the lead wire 3 having been modified to suit the user's preferences, can be achieved without changing the socket 127 structure which constitutes the conventional connection structure together with the plug 125.
  • the pressing recess 49 may be omitted by forming another securing means in the rotary lever 39.
  • Figs. 5 to 8 show a second embodiment of the plug 2 according to the present invention.
  • the second embodiment differs from the first embodiment in the clamp means for clamping the lead wire 3.
  • the lead wire 3 is gripped and clamped between a rotary lever 11 and a plate spring 13.
  • the rotary lever 11 is rotatably supported with respect to a plug housing 9.
  • the plug housing 9 is formed in the shape of rectangular parallelepiped and is insertable into and withdrawable from the connection recess 139 provided in the socket 127.
  • the plug housing 9 has an insertion hole 35 drilled in its rear surface 9a.
  • the plate spring 13, which is contiguous to the plug-side contact terminal 25, is folded to a generally U-shape in the direction toward the rear of the contact terminal, and its free end lies within the insertion hole 35, as shown in Fig. 7 .
  • the rotary lever 11 has, at the front of its side surface, a rotary shaft 12 formed so as to protrude vertically.
  • the rotary shaft 12 is rotatably supported on a side wall 9b of the plug housing 9, so that the rotary lever 11 is openable and closeable with respect to the side wall 9b.
  • a pair of pressing projections 14 Protrudingly at the rear of the rotary lever 11 are formed a pair of pressing projections 14.
  • the pressing projections 14 are inserted through lever windows 45, respectively drilled in upper and lower parts of the side wall 9b, to protrude into upper and lower insertion holes 35.
  • the front end of the pressing projection 14 abuts against and presses the plate spring 13 which also lies in the insertion hole 35.
  • the pressing projection 14 has, on the basal-end side of its rear surface, an engagement projection 16 which is engaged with part of the side wall 9b acting as the rear edge of the lever window 45. As shown in Fig. 8 , the engagement projection 16 keeps the rotary lever 11 in the clamp position.
  • the constituent components including the plate spring 13, the insertion hole 35, and the pressing projection 14 are each provided in pairs corresponding to each of the signal and ground wires 5 and 7, and the two components constituting each pair are disposed in the upper and lower portions of the plug housing 9, respectively, in the lengthwise direction.
  • a single rotary lever 11 can be shared, so that the signal and ground wires 5 and 7 are clamped or unclamped concurrently.
  • the rotary lever 11 is rotated with the side wall 9b to be set in the parallel clamp position. Then, as shown in Fig. 8 , the inserted lead wire 3 is sandwiched and clamped between the plate spring 13 and the pressing projection 14 of the operation lever 11. As a result, the lead wire 3 is electrically connected to the plug-side contact terminal 23.
  • the engagement projection 16 is engaged with the rear edge of the lever window 45. This prevents the rotary lever 11 from rotating inadvertently, so that the clamped state is maintained.
  • the paired lead wires 5 and 7 are each electrically connected via the plug-side contact terminal 25 to the apparatus-side terminal 131.
  • the rotary lever 11 is inhibited from further rotation by the inner wall of the connection recess 139 while being set in the clamp position. This, in addition to the action of the engagement projection 16, prevents the rotary lever 11 from rotating into the unclamp position more reliably, so that the lead wire 3 never slips off inadvertently.
  • clamping is achieved by rotating the rotary lever (39 and 11) toward the plate spring (33 and 13).
  • a third embodiment shown in Fig. 9 it is also possible to achieve clamping and unclamping at the touch of a push button 55.
  • a plate spring 59 is arranged opposite to a contact plate 57 formed integrally with the plug-side contact terminal 25, so that the lead wire 3, i.e. the signal or ground wire 5 or 7, is clamped between the contact plate 57 and the plate spring 59.
  • the push button 55 is so arranged as to face the contact plate 57 and is made rotatable about a rotary shaft 61.
  • the push button 55 protrudes through a button window 63 of the plug housing 15 to allow a finger to be placed thereon from outside.
  • the push button 55 has a pressing projection 65 formed in its portion located on the inner side of the plug housing 15. The pressing projection 65 presses the plate spring 59.
  • the plate spring 59 is made longer than the contact plate 57 and extends outward beyond the edge of the contact plate 57, and its extended portion 67 is pressed by the pressing projection 65.
  • the pressing projection 65 is so arranged as to face the end of the plate spring 59 so as not to stand in the way of the lead wire 3 within the insertion space 38.
  • the lead wire is clamped under the resilient force of the plate spring 59 per se.
  • the clamped state i.e. the connection of the lead wire 3
  • FIG. 10 shows yet another embodiment of the present invention having clamp means configured differently from those of the above-described embodiments.
  • a contact plate 71 formed integrally with the plug-side terminal 25, is disposed along upper and lower inner walls 73 of the plug housing 15.
  • a pressing member 75 is arranged opposite to the contact plate 71. The skinned portion 37 of the lead wire 3 is clamped between the pressing member 75 and the contact plate 71.
  • a push button 77 is formed from an insulating plastic material integrally with the pressing member 75.
  • An operation portion 77a of the push button 77 protrudes through a button window 79, which is drilled in the front and bottom surfaces of the plug housing 15, to allow a finger to be placed thereon from outside.
  • the plug-side contact terminal 25, the contact plate 71, the pressing member 75, and the push button 77 are each provided in pairs corresponding to each of the paired lead wires 5 and 7 for connection.
  • the pressing member 75 and the push button 77 are disposed on both sides of a U-shaped member 81.
  • the U-shaped member 81 is formed from a plastic material integrally with the push button 77 and the pressing member 75. Being formed in the shape of the letter "U", the U-shaped member 81 possesses elasticity and serves as elastic means for loading the pressing member 75 with a force that tends to move it vertically (outwardly of the plug housing 15).
  • Both of the pressing members 75 are also loaded with a force by an auxiliary spring 83 serving as auxiliary elastic means.
  • the push buttons 77 are taken with the operator's fingers so as for the pressing member 75 to move toward the inner side of the plug housing 15. By doing so, an insertion space 38 can be secured between the pressing member 75 and the contact plate 71 for insertion of the lead wire 3.
  • the push button 77 is released. Then, the push button 77 and the pressing member 75 try to return to their original positions under the elasticity of the U-shaped member 81 or the auxiliary spring 83, whereby the lead wire 3 is clamped between the pressing member 75 and the contact plate 71.
  • the U-shaped member 81 serves as elastic means and thus the auxiliary spring 83 does not necessarily have to be provided. In a case where a spring like the auxiliary spring 83 is used, there is no need to make the U-shaped member 81 elastic means.
  • the U-shaped member 81 acts merely as positioning means for the push button 77 and the pressing member 75.
  • the unclamped state is attained in such a condition that the push button 77 is released to activate the U-shaped member 81 and the auxiliary spring 83, it is possible to achieve clamping with stability.
  • the two push buttons 77 pressing force is applied from above and below to the plug housing 15 formed in the shape of rectangular parallelepiped, thereby obtaining a large press allowance.
  • a sufficiently wide insertion space 38 can be secured, and further, the width of the plug housing 15 can be reduced, so that the plug is made slimmer.
  • the plug-side contact terminal 25 is formed in a substantially cylindrical shape and is fitted into a pin terminal acting as the apparatus-side terminal 131 so as to be connected therewith.
  • the plug-side contact terminal 25 may have any given shape so long as it is electrically connected.
  • the apparatus-side terminal 131 is built as a pin terminal, and the plug-side contact terminal 25 is substantially cylindrical in shape and split in half. However, they do not necessarily have to have such configurations. For example, the following design may be adopted.
  • the apparatus-side terminal 131 and the plug-side contact terminal 25 one is formed as a flat terminal, and the other is formed as a terminal having elasticity. Upon insertion of the plug 1 (and 2), these two terminals make elastic contact with each other.
  • connection recess 139 and the plug housing 15 each have an asymmetrical section. This is achieved by providing the former with the rib 141 and the latter with the concave groove 19.
  • the other embodiments may have such a structure that the connection recess 139 is provided with the concave groove 19 and the plug housing 15 is provided with the rib 141.
  • connection recess 139 and the plug housing 15 each have a substantially quadrangular section.
  • the rib 141 and the concave groove 19 are provided.
  • the asymmetricity can be realized by any other manner than is described above.
  • the section may be shaped to be in the form of a scalene triangle, instead of a quadrangle.
  • the lead wire is illustrated as a combination of the signal wire 5 and the ground wire 7, the pair to the lead wire is not limited to a ground wire.
  • a lead wire such as a signal or ground wire
  • a plug can be connected to a plug by means of attachable/detachable clamp means.
  • attachable/detachable clamp means This allows easy connection of a specially-designed, for example, a thick lead wire, achieving versatility.
  • the plug is so configured as to be fitted into and connected with the socket designed for use with a conventional plug to which a pair of lead wires is connected, it is possible to use the plug, which allows connection of any type of lead wire, while maintaining the structure for providing connection between the conventional plug and socket.
  • the plug housing is given an asymmetrical profile. This prevents the signal and ground wires from being connected in reversed polarity.
  • connection can be achieved simply by inserting the plug into the connection recess. That is, the connection operation can be easily achieved with one hand.
  • the lead wire can be connected to the plug at any given location regardless of the position of the socket. This enables workers to smoothly perform connecting operations without suffering from poor visibility. This prevents occurrence of wrong connection, as well as short circuits caused by the contact among the skinned portions of the lead wire.

Landscapes

  • Details Of Connecting Devices For Male And Female Coupling (AREA)

Claims (9)

  1. Stecker (1) zum Verbinden eines Paares von Leitungsdrähten (5, 7), das einen ersten Leitungsdraht (5) und einen zweiten Leitungsdraht (7) aufweist, mit einem Gerät, wobei der Stecker folgendes aufweist:
    - ein Steckergehäuse (15), das derart konfiguriert ist, daß es sich in eine geräteseitig vorgesehene Verbindungsaussparung (139) einsetzen sowie aus dieser entfernen läßt;
    - ein Paar von steckerseitigen Kontaktanschlüssen (25), die im Inneren des Steckergehäuses (15) angeordnet sind und dazu ausgebildet sind, mit einem Paar von geräteseitigen Anschlüssen (131) kontaktiert zu werden, die dem ersten bzw. dem zweiten Leitungsdraht (5, 7) entsprechen; und
    - Verbindungseinrichtungen (33, 39; 11, 13) zum Verbinden des Paares von steckerseitigen Kontaktanschlüssen (25) mit dem ersten bzw. dem zweiten Leitungsdraht (5, 7),
    - wobei der Stecker (1) dazu ausgebildet ist, in eine Buchse (127) eingesteckt zu werden, die in einem Verstärker oder einem Lautsprecher vorgesehen ist und die Verbindungsaussparung (139) bildet; und
    - wobei der Stecker (1) eine ein umgekehrtes Einsetzen verhindernde Einrichtung (19) aufweist, um dem Steckergehäuse (15) ein asymmetrisches Profil zu verleihen, so daß sich dieses nur in einer vorbestimmten Position in eine entsprechende asymmetrisch konfigurierte Verbindungsaussparung (139) einsetzen und aus dieser entfernen läßt,
    dadurch gekennzeichnet,
    daß es sich bei den Verbindungseinrichtungen (33, 39; 11, 13) um Klemmeinrichtungen handelt, die an dem ersten oder zweiten Leitungsdraht (5, 7) lösbar angebracht sind,
    und daß die Klemmeinrichtungen folgendes aufweisen:
    - eine Plattenfeder (33; 13), die mit dem steckerseitigen Kontaktanschluß (25) in integraler Weise ausgebildet ist, und
    - einen Drehhebel (39), der von dem Steckergehäuse (15) drehbar gelagert ist und dazu ausgebildet ist, die Plattenfeder (33) derart mit Druck zu beaufschlagen, daß der in das Steckergehäuse (15) eingeführte erste oder zweite Leitungsdraht (5, 7) zwischen der Plattenfeder (33) und einer Innenwand des Steckergehäuses (15) eingeklemmt ist, oder
    - einen Drehhebel (11), der von dem Steckergehäuse (15) drehbar gelagert ist und der es ermöglicht, daß ein in das Steckergehäuse (15) eingeführter erster oder zweiter Leitungsdraht (5, 7) zwischen der Plattenfeder (13) und dem von dem Steckergehäuse (15) abgestützten Drehhebel (11) ergriffen und eingeklemmt wird.
  2. Stecker nach Anspruch 1,
    wobei der mit dem Paar von Leitungsdrähten (5, 7) ausgestattete Stecker dazu ausgebildet ist, eine Verbindung zwischen einem Verstärker und einem Lautsprecher bei einem Audiogerät herzustellen, und
    wobei die ein umgekehrtes Einsetzen verhindernde Einrichtung (19) eine Aussparung (19) aufweist, die zu einem komplementären Vorsprung (141) paßt, der in der Verbindungsaussparung (139) ausgebildet ist, oder einen Vorsprung aufweist, der zu einer komplementären Aussparung paßt, die in der Verbindungsaussparung (139) ausgebildet ist.
  3. Stecker nach Anspruch 1 oder 2,
    wobei der Stecker weiterhin folgendes aufweist:
    - eine Druckbeaufschlagungsnase (43), die an dem Drehhebel (39) zum Aufbringen einer Druckbeaufschlagungskraft vorgesehen ist; und
    - eine Druckbeaufschlagungsaussparung (49), die in einem mit Druck zu beaufschlagenden Bereich der Plattenfeder (33) ausgebildet ist,
    - wobei die Druckbeaufschlagungsnase (43) die Druckbeaufschlagungsaussparung (49) nur dann überquert, wenn der Drehhebel (39) in einen nicht festgeklemmten Zustand gedreht wird.
  4. Stecker nach Anspruch 1 oder 2,
    wobei der Drehhebel (11) mit einem Eingriffsbereich (14) versehen ist, und
    wobei der Drehhebel (11), an seinem Eingriffsbereich (14), in das Steckergehäuse (15) eingepaßt ist, wenn er in eine derartige Rotationsposition verbracht ist, daß der erste oder zweite Leitungsdraht (5, 7) zwischen der Plattenfeder (13) und dem durch das Steckergehäuse (15) abgestützten Drehhebel (11) gegriffen werden kann und dadurch ein festgeklemmter Zustand gebildet ist.
  5. Stecker nach einem der Ansprüche 1, 2 oder 4,
    wobei ein Paar von Klemmeinrichtungen einen in integraler Weise ausgebildeten Drehhebel (11) aufweist und, durch Rotation des Drehhebels (11), der erste und der zweite Leitungsdraht (5, 7) gleichzeitig festgeklemmt oder gelöst werden.
  6. Stecker (1) zum Verbinden eines Paares von Leitungsdrähten (5, 7), das einen ersten Leitungsdraht (5) und einen zweiten Leitungsdraht (7) aufweist, mit einem Gerät, wobei der Stecker folgendes aufweist:
    - ein Steckergehäuse (15), das derart konfiguriert ist, daß es sich in eine geräteseitig vorgesehene Verbindungsaussparung (139) einsetzen sowie aus dieser entfernen läßt;
    - ein Paar von steckerseitigen Kontaktanschlüssen (25), die im Inneren des Steckergehäuses (15) angeordnet sind und dazu ausgebildet sind, mit einem Paar von geräteseitigen Anschlüssen (131) kontaktiert zu werden, die dem ersten bzw. dem zweiten Leitungsdraht (5, 7) entsprechen; und
    - Verbindungseinrichtungen (55, 59) zum Verbinden des Paares von steckerseitigen Kontaktanschlüssen (25) mit dem ersten bzw. dem zweiten Leitungsdraht (5, 7),
    - wobei der Stecker (1) dazu ausgebildet ist, in eine Buchse (127) eingesteckt zu werden, die in einem Verstärker oder einem Lautsprecher vorgesehen ist und die Verbindungsaussparung (139) bildet; und
    - wobei der Stecker (1) eine ein umgekehrtes Einsetzen verhindernde Einrichtung (19) aufweist, um dem Steckergehäuse (15) ein asymmetrisches Profil zu verleihen, so daß sich dieses nur in einer vorbestimmten Position in eine entsprechende asymmetrisch konfigurierte Verbindungsaussparung (139) einsetzen und aus dieser entfernen läßt,
    dadurch gekennzeichnet,
    daß es sich bei den Verbindungseinrichtungen (55, 59) um Klemmeinrichtungen handelt, die an dem ersten oder zweiten Leitungsdraht (5, 7) lösbar angebracht sind,
    und daß die Klemmeinrichtungen eine Plattenfeder (59, 67) aufweisen, die mit dem steckerseitigen Kontaktanschluß (25) in integraler Weise ausgebildet ist, und
    wobei bei den Klemmeinrichtungen die Plattenfeder (59, 67) mit einer Kontaktplatte (57) versehen ist, wobei beide Elemente mit dem steckerseitigen Kontaktanschluß (25) in integraler Weise ausgebildet sind;
    wobei die Plattenfeder (59, 67) gegenüber von der Kontaktplatte (57) angeordnet ist, wobei die Plattenfeder (59, 67) mit einer Kraft vorgespannt ist, die diese zu der Kontaktplatte (57) hin zu bewegen versucht, so daß der erste oder der zweite Leitungsdraht (5, 7) gegriffen wird und zwischen der Kontaktplatte (57) und der Plattenfeder (59, 67) eingeklemmt wird; und
    wobei eine Drucktaste (55) vorgesehen ist, um ein Lösen zu erzielen, indem die Plattenfeder (59, 67) in einer Richtung mit Druck beaufschlagt wird, die zu der Richtung einer Vorspannungskraft entgegengesetzt ist.
  7. Stecker (1) zum Verbinden eines Paares von Leitungsdrähten (5, 7), das einen ersten Leitungsdraht (5) und einen zweiten Leitungsdraht (7) aufweist, mit einem Gerät, wobei der Stecker folgendes aufweist:
    - ein Steckergehäuse (15), das derart konfiguriert ist, daß es sich in eine geräteseitig vorgesehene Verbindungsaussparung (139) einsetzen sowie aus dieser entfernen läßt;
    - ein Paar von steckerseitigen Kontaktanschlüssen (25), die im Inneren des Steckergehäuses (15) angeordnet sind und dazu ausgebildet sind, mit einem Paar von geräteseitigen Anschlüssen (131) kontaktiert zu werden, die dem ersten bzw. dem zweiten Leitungsdraht (5, 7) entsprechen; und
    - Verbindungseinrichtungen (75, 71, 81) zum Verbinden des Paares von steckerseitigen Kontaktanschlüssen (25) mit dem ersten bzw. dem zweiten Leitungsdraht (5, 7),
    - wobei der Stecker (1) dazu ausgebildet ist, in eine Buchse (127) eingesteckt zu werden, die in einem Verstärker oder einem Lautsprecher vorgesehen ist und die Verbindungsaussparung (139) bildet; und
    - wobei der Stecker (1) eine ein umgekehrtes Einsetzen verhindernde Einrichtung (19) aufweist, um dem Steckergehäuse (15) ein asymmetrisches Profil zu verleihen, so daß sich dieses nur in einer vorbestimmten Position in eine entsprechende asymmetrisch konfigurierte Verbindungsaussparung (139) einsetzen und aus dieser entfernen läßt,
    dadurch gekennzeichnet,
    daß es sich bei den Verbindungseinrichtungen (75, 71, 81) um Klemmeinrichtungen handelt, die an dem ersten oder zweiten Leitungsdraht (5, 7) lösbar angebracht sind,
    und daß die Klemmeinrichtungen folgendes aufweisen:
    - eine Kontaktplatte (71), die mit dem steckerseitigen Kontaktanschluß (25) in integraler Weise ausgebildet ist;
    - ein Druckbeaufschlagungselement (75), das gegenüber von der Kontaktplatte (71) angeordnet ist und ein Greifen und Einklemmen des ersten oder zweiten Leitungsdrahts (5, 7) zwischen der Kontaktplatte (71) und dem Druckbeaufschlagungselement (75) ermöglicht;
    - eine elastische Einrichtung (81) zum Vorspannen des Druckbeaufschlagungselements (75) mit einer Kraft, die dieses zu der Kontaktplatte (71) hin zu bewegen versucht; und
    - eine Drucktaste (77), die zum Lösen des Klemmzustands ausgelegt ist, indem das Druckbeaufschlagungselement (75) in einer Richtung mit Druck beaufschlagt wird, die zu der Richtung einer Vorspannungskraft entgegengesetzt ist.
  8. Stecker nach Anspruch 7,
    wobei der mit dem Paar von Leitungsdrähten (5, 7) ausgestattete Stecker dazu ausgebildet ist, eine Verbindung zwischen einem Verstärker und einem Lautsprecher bei einem Audiogerät herzustellen, und
    wobei die ein umgekehrtes Einsetzen verhindernde Einrichtung (19) eine Aussparung (19) aufweist, die zu einem komplementären Vorsprung (141) paßt, der in der Verbindungsaussparung (139) ausgebildet ist, oder einen Vorsprung aufweist, der zu einer komplementären Aussparung paßt, die in der Verbindungsaussparung (139) ausgebildet ist.
  9. Stecker nach Anspruch 7 oder 8,
    wobei die Kontaktplatte (71), das Druckbeaufschlagungselement (75) und die Drucktaste (77) entsprechend dem jeweiligen ersten und zweiten Leitungsdraht (5, 7) jeweils in Paaren angeordnet sind und von diesen Komponenten die Druckbeaufschlagungselemente (75) und die Drucktasten (77) jeweils an beiden Enden eines U-förmigen Elements (81) angeordnet sind, das als elastische Einrichtung dient.
EP01128536A 2000-08-23 2001-11-29 Stecker Expired - Lifetime EP1317029B1 (de)

Priority Applications (5)

Application Number Priority Date Filing Date Title
JP2000252926A JP3435132B2 (ja) 2000-08-23 2000-08-23 プラグ
DE60135131T DE60135131D1 (de) 2001-11-29 2001-11-29 Stecker
EP01128536A EP1317029B1 (de) 2001-11-29 2001-11-29 Stecker
CNB011427973A CN1248372C (zh) 2000-08-23 2001-12-07 插头
US10/033,684 US6712649B2 (en) 2000-08-23 2001-12-27 Plug

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP01128536A EP1317029B1 (de) 2001-11-29 2001-11-29 Stecker

Publications (2)

Publication Number Publication Date
EP1317029A1 EP1317029A1 (de) 2003-06-04
EP1317029B1 true EP1317029B1 (de) 2008-07-30

Family

ID=39577315

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01128536A Expired - Lifetime EP1317029B1 (de) 2000-08-23 2001-11-29 Stecker

Country Status (2)

Country Link
EP (1) EP1317029B1 (de)
DE (1) DE60135131D1 (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114824950B (zh) * 2022-06-03 2023-11-03 南通诚弘精密机械有限公司 一种便于拆卸的电连接器

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1666991A (en) * 1925-08-25 1928-04-24 Cohen Sidney Electrical connecter
DE718027C (de) * 1939-04-13 1942-02-28 Siemens Ag Steckvorrichtung
DE1282123B (de) * 1967-11-24 1968-11-07 Siemens Ag Klemme fuer schraubenlosen Leiteranschluss
FR2394187A1 (fr) * 1977-06-08 1979-01-05 Radiotechnique Moyens de raccordement, sans execution de soudures, d'appareils electriques, notamment de haut-parleurs de recepteurs auto-radio
US4413872A (en) * 1981-05-11 1983-11-08 Amp Incorporated Preloaded electrical connector
GB2158655B (en) * 1984-05-10 1988-03-30 Kun Shan Chen Method and apparatus for fixing electric cord
US4764129A (en) * 1984-09-27 1988-08-16 British Telecommunications Plc Electrical connector assemblies
WO1987001244A1 (en) * 1985-08-20 1987-02-26 Chugai Denshi Sangyo Kabushiki Kaisha Connector
US4975076A (en) * 1990-03-01 1990-12-04 Molex Incorporated Contact wiping electrical connector
JPH07142102A (ja) * 1993-09-22 1995-06-02 Nifco Inc 電線用プラグ

Also Published As

Publication number Publication date
EP1317029A1 (de) 2003-06-04
DE60135131D1 (de) 2008-09-11

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