US3671924A - Electric connector - Google Patents

Electric connector Download PDF

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Publication number
US3671924A
US3671924A US74742A US3671924DA US3671924A US 3671924 A US3671924 A US 3671924A US 74742 A US74742 A US 74742A US 3671924D A US3671924D A US 3671924DA US 3671924 A US3671924 A US 3671924A
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Prior art keywords
spring means
electrically conductive
spring
conductive plate
conductor
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US74742A
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English (en)
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Hideo Nagano
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R9/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, e.g. terminal strips or terminal blocks; Terminals or binding posts mounted upon a base or in a case; Bases therefor
    • H01R9/22—Bases, e.g. strip, block, panel
    • H01R9/24—Terminal blocks
    • H01R9/2408—Modular blocks
    • 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
    • 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
    • H01R4/52—Clamped connections, spring connections utilising a cam, wedge, cone or ball also combined with a screw which is spring loaded

Definitions

  • An electric connector for electrically connecting various electric wires and plugs in a very simple manner comprises a housing made of electrically insulating material, an electrically conductive place, a spring means disposed above said electrically conductive plate and consisted of a retaining plate spring having an end turned back inwardly at an angle larger than 90 and a clamping plate spring disposed underneath said retaining plate spring, and an operating member movably disposed above said spring means so as to assume a first position and a second position.
  • the electric connector further comprises a means for supporting said spring means in such a manner that when said operating member is in said first position, there can be formed a spacing between said spring means and said electrically conductive plate sufiicient for inserting said conductor therebetween without striking against said spring means so as to connect said conductor electrically and mechanically in a very stable manner.
  • Terminal boards are widely used in various electric and electronic industries to interconnect electric conductors such as single or bundled electric wires, single or multi-core cables, single or stranded bare conductors, etc.
  • a known terminal board comprises one or more electrically conductive plates, each having a pair of fastening screws located at opposite ends thereof, and an electrically insulating supporting means such as a board made of electrically insulating material, to hold the electrically conductive plates thereon, with proper spacings therebetween.
  • Each end of the wires to be connected is secured to the electrically conductive plate by means of the fastening screws.
  • Such electric connectors are simple in construction and provide electric connection with a low contact resistance. However, they have the following disadvantages:
  • each wire conductor has to bend or wind around the fastening screw, so as to insure reliable engagement of the wire conductor with the fastening screw.
  • Such bending or winding of the end portions of the wire conductor amounts to considerable labor.
  • an electric connector which comprises a housing made of electrically insulating material; a spring means disposed inside of said housing and consisting of a retaining plate spring having both ends turned back at an angle larger than 90, and a clamping plate spring disposed underneath said retaining plate spring; an electrically conductive plate disposed on the upper surface of a bottom wall of the housing; and an operating member rotatably supported at the top of the housing so as to selectively assume a first position to allow an insertion of conductors to be connected between said spring means and said electrically conductive plate, and a second position to depress said spring means so as to retain and clamp said conductors against said electrically conductive plate by both said retaining and clamping plate springs.
  • both of the retaining and clamping plate springs both ends of the retaining plate spring are turned back at an angle larger than 90, so that upon depression of the retaining plate spring, there is produced an elastic force having a component in the longitudinal direction of the conductors being connected, in a sense toward the inside of the connector. With such component force, the retaining plate spring engages the conductor in a wedge-like fashion. As a result, the retaining plate spring exerts a large resistance against pulling of the conductor out of the connector.
  • the conductors are urged against the electrically conductive plate by both the retaining and clamping plate springs and, hence, the conductors can be connected electrically and mechanically in a very stable manner.
  • an electric connector assembly consisting of a plurality of connectors which are fastened to each other by means of a pair of bolts and nuts.
  • fastening means such as bolts and nuts are not sufficient to firmly assemble them against various mechanical stresses such as upwards and/or downwards bending stresses, rightwards and/or leftwards bending stresses and twisting stresses.
  • a further object of the present invention is to provide an improved electric connector which is particularly suitable for power application.
  • An electric connector comprises a housing made of electrically insulating material and having at least a bottom wall and a hollow space; an electrically conductive plate disposed on the upper surface of said bottom wall of said housing; a spring means disposed within said hollow space of said housing and above said electrically conductive plate and consisting of at least a retaining plate spring having one end turned back inwardly at an angle larger than and a clamping plate spring disposed underneath said retaining plate spring; an operating member movably supported above said spring means so as to assume a first position to allow an insertion of a conductor between said spring means and said electrically conductive plate and a second position to depress said spring means so as to retain and clamp said conductor against said electrically conductive plate; and a means for supporting said spring means at a raised position while said operating member is in said first position so as to form a spacing between the lower portion of said spring means and the electrically conductive plate sufficient for inserting said conductor without striking against said lower portion of said spring means.
  • the electric connector comprises a housing made of electrically insulating material and having at least a bottom wall and a hollow space; an electrically conductive plate disposed on the upper surface of said bottom wall of said housing; a spring means disposed within said hollow space of said housing and above said electrically conductive plate and consisting of a retaining plate spring both ends of which are turned back inwardly at an angle larger than 90 and a clamping plate spring disposed underneath said retaining plate spring; a pair of operating members each of which is movably supported above said spring means so as to assume a first position to allow an insertion of a conductor between said spring means and said electrically conductive plate and a second position to depress said spring means so as to retain and clamp said conductor against said electrically conductive plate; and a means disposed at a middle of said pair of the operating members and for supporting said spring means at its middle point so that two half portions of the spring means can be operated separately, the height of said supporting means being so determined that when said operating member is in
  • each half portion of the spring means can be separately operated by each of the operating members such as cam levers, so that either one of conductors can be inserted into or pulled out of the electric connector independently from each other.
  • FIGS. 1 and 2 are plan views showing a basic construction of a previously proposed electric connector
  • FIG. 3 is a plan view showing a basic construction of an electric connector according to the present invention.
  • FIG. 4 is a plan view of an electrical connector illustrating a first embodiment of the invention
  • FIGS. 5 and 6 are plan views showing a second embodiment of the invention.
  • FIGS. 7 and 8 are plan views illustrating a third embodiment of the invention.
  • FIG. 9 shows a plan view of a fourth embodiment of the im vention, which is particularly suitable for a power application
  • FIG. 10 is a side view of a housing of the electric connector shown in FIG. 9;
  • FIG. 11 is a side view showing a connector assembly composed of two electric connectors shown in FIG. 9;
  • FIG. 12 is a front view of the connector assembly shown in FIG. I 1;
  • FIGS. 13 and 14 are plan views showing a fifth embodiment of the invention, which is particularly suitable for a large power application;
  • FIG. 15 is a side view of a housing of the electric connector illustrated in FIGS. 13 and 14;
  • FIG. 16 is a cross sectional view showing the housing taken along a line A-A in FIG. 15;
  • FIG. 17 is a plan view showing a sixth embodiment of the invention.
  • FIG. 18 shows a connector assembly composed of a plurality of the connectors shown in FIG. 17;
  • FIG. 19 shows a detailed construction of an end block shown in FIG. 18.
  • FIG. 20 shows an electric connector assembly composed of a plurality of the electric connectors shown in FIG. 4 and a connecting means which can be connected simultaneously to the connector assembly.
  • FIGS. 1 and 2 show a basic construction of an electric con nector which had been previously proposed.
  • This electric connector designated generally by a reference figure U consists of a housing I made of electrically insulating material, such as synthetic resin. On an upper surface of a bottom wall of the housing 1, an electrically conductive plate 3 is arranged.
  • a hollow space 4 within the housing 1 receives a spring means consisting of upper and lower retaining plate springs 5 and 5' and a clamping plate spring 6 of W-shape. Both ends of the retaining plate springs 5 and 5 are turned back inwardly at an angle larger than The clamping plate spring 6 is disposed between the lower retaining plate spring 5 and the electrically conductive plate 3.
  • a cam lever 7 is pivotally supported by the housing 1 through a shaft 8 joumalled by the housing 1.
  • the cam lever 7 When the cam lever 7 is in a first position, it does not engage with the upper retaining plate spring 5, so that it does not exert any influence on the spring means.
  • wire conductors 9 and 10 (see FIG. 2) to be connected can be inserted into the connector U through holes 11 and 12 formed on side walls of the housing 1, respectively.
  • the cam lever 7 is turned clockwise so as to assume a second position shown in FIG. 2. Then, the lower end of the cam portion of the cam lever 7 depresses the upper retaining plate spring 5 as well as the lower retaining plate spring 5 at their central portions, so as to cause engagement of the end portions of the retaining plate springs 5, 5 and the conductors 9 and 10 at points A, B, C and D. Due to the fact that both ends of the retaining plate springs 5 and 5' are turned back at an angle larger than 90, upon depression of the retaining plate springs 5 and 5' vertically downwards, there are produced horizontal components of force in the sense to keep the conductors 9 and 10 towards the center of the connector U. Besides, the tips of the retaining plate springs 5 and 5 slightly bite the conductors 9 and 10 to retain and stop them securely against the pulling out of the connector U.
  • the clamping plate spring 6 are also depressed downwards by the cam lever 7 through the retaining plate springs 5 and 5.
  • the clamping plate spring 6 urges the conductors 9 and 10 against the common electrically conductive plate 3 at points E and F, respectively
  • the wire conductors 9 and 10 are electrically connected effectively by depressing the conductors against the electrically conductive plate 3 by both of the retaining plate springs 5, 5 and the clamping plate spring 6, while insuring firm mechanical connection thereof against pulling-out by the plate spring means 5, 5 and 6, particularly by the inwardly oriented-engagement between the retaining plate springs 5, 5' and the conductors 9 and 10.
  • the present invention provides an improved electric connector which can obviate the abovementioned disadvantage and can also offer further advantages as will be explained hereinafter.
  • FIG. 3 shows the principal construction of the spring means according to the invention
  • the spring means consists of a retaining plate spring 5R the outer end of which is turned back inwardly at an angle greater than 90 and of a clamping plate spring 6R of V-shape, which is disposed between the retaining plate spring SR and an electrically conductive plate 3.
  • each inner end of the retaining and clamping plate springs SR and 6R opposite to the end which is turned back is clamped between a pair of clamping members 13 and 14.
  • the height of the lower clamping member 13 is so selected that in the first position of the cam lever 7R shown in FIG.
  • distance d between the lower end of the clamping plate spring GR and the electrically conductive plate 3 is larger than a diameter of a thin conductor to be inserted into the connector.
  • FIG. 4 shows an electric connector according to the invention which utilizes the spring means shown in FIG. 3.
  • a bottom wall 2 lower and upper clamping members 13 and 14 are formed integrally with a housing 1.
  • a spring means consists of a retaining plate spring 5R, a clamping plate spring and a reinforcing plate spring disposed underneath the retaining plate spring SR. Inner ends of these plate springs 5R, 6R and 15' are clamped between a pair of clamping members 13 and 14. In this case, it is not always necessary to clamp tightly the spring means by the clamping members 13 and 14 so far as the spring means is held in a position within the hollow space 4 of the housing 1.
  • the outer end of the retaining plate spring SR is turned back at an angle greater than 90.
  • an electrically conductive plate 3 On the upper surface of the housing 1, there is provided an electrically conductive plate 3. An end of the electrically conductive plate 3 opposite to the end from which a conductor 9 is to be inserted into the connector U through a hole 11 formed on a side wall of the housing 1, is extended out of the housing 1 through a hole 12 formed on the opposite side wall of the housing 1 to form a projection 3. To this projection 3', a conductor may be permanently secured by, for example, soldering or wrapping which is commonly employed in telephone communication apparatus.
  • a cam lever 7R is arranged above the spring means 5R, 6R and 15'. The cam lever 7R is pivotally supported by a shaft 8R.
  • the spring means When the cam lever 7R is rotated around the shaft 8R counterclockwise, the spring means assumes a raised position by means of its own elastic force. At this time, since the inner end of the spring means is held at the raised position by the clamping members 13 and 14, there is formed a spacing between the lower end(s) of the spring means and the electrically conductive plate 3 enough for inserting a conductor 9 of small diameter without being inhibited by the spring means. Thus, the conductor 9 can be inserted into the connector U through the hole 11 to a given extent and the conductor 9 is connected to the electrically conductive plate 3 in a mechanically and electrically stable and firm manner.
  • FIG. 5 shows a second embodiment of the electric connector according to the invention, which can satisfy the abovementioned requirements.
  • the right hand half of the spring means consists of a retaining plate spring 5R an outer end of which is turned back inwardly at an angle greater than and of a clamping plate spring 6R of V-shape
  • the left hand half portion of the spring means consists of a retaining plate spring 5L, an outer end of which is likewise turned back inwardly at an angle larger than 90 and of a clamping plate spring 6L of V-shape.
  • both half portions 5R, 6R and SL, 6L of the spring means are clamped between a lower clamping member 13 and an upper clamping member 14 which may be fonned integrally with the housing 1 at a middle thereof.
  • a pair of cam levers 7R and 7L are pivotally supported by a pair of shafts SR and SL above the spring means.
  • FIGS. 7 and 8 show a third embodiment of the electric connector according to the invention.
  • the composition and shape of the spring means are essentially the same as those of the previously proposed electric connector shown in FIGS. 1 and 2. That is, the spring means consists of a retaining plate spring 5 and a clamping plate spring 6 and both ends of the retaining plate spring 5 are turned back inwardly at an angle larger than 90 and the clamping plate spring 6 of W- shape is disposed between the retaining plate spring 5 and an electrically conductive plate 3 provided on an upper surface of a bottom portion 2 of a housing.
  • a center pillar 13 is provided at the central portion of the spring means between the clamping plate spring 6 and the electrically conductive plate 3.
  • the center pillar 13 may be made integral with the housing.
  • the height of the center pillar 13 is so determined that when the spring means is not depressed as illustrated in FIG. 7, the bottom comers of the clamping plate spring 6 do not contact the electrically conductive plate 3 and there is formed an enough spacing therebetween for inserting a wire conductor without being inhibited by the bottom comer of the clamping plate spring 6. Therefore, the wire conductors can be inserted smoothly into the electric connector and during this insertion, a wire conductor of small diameter never strikes against the clamping plate spring 6, so that the conductor can be inserted into the connector to a desired extent.
  • FIG. 9 shows a fourth embodiment of the electric connector according to the invention.
  • the connector of this embodiment is particularly suitable for power applications in which a large current more than, for example, 50 amperes flows, so that wire conductors of quite large diameter or connecting plugs of large size have to be used.
  • the basic construction of the spring means of this embodiment is substantially the same as the preceding embodiments. That is the spring means consists of two retaining plate springs SR and SL, a substantially W- shaped clamping plate spring 6 and two reinforcing plate springs and 15.
  • a central pillar .13 having a circular portion is formed integral with the housing 1 and the spring means is disposed on the central pillar 13.
  • the height of the central pillar l3' is so chosen that with the first position of the cam levers 7R, 7L shown in FIG. 9, there may be formed an enough spacing between the lower ends of the spring means and the electrically conductive plate 3 for inserting wire conductors of large diameter or connecting plugs of a large size into the electric connector U without striking against the spring means.
  • the retaining plate spring consists of two separate half portions SR and SL.
  • the spring means of this embodiment for power application is made of thick plate springs, having a large width and a large mechanical strength, it is difficult to operate the cam levers 7R and 7L by, for example, a finger. Therefore, there are formed holes 50R and 50L in the lever portion ofcam levers 7R and 7L, respectively.
  • the cam levers 7R and 7L can be actuated by a suitable tool such as a screw driver which can be inserted into the holes 50R and 50L.
  • FIG. 10 is a side view showing the housing 1 of the electric connector illustrated in FIG. 9.
  • FIG. 11 is a side view of the electric connector assembly consisting of two units U shown in FIG. 9.
  • two connector units U are arranged side by side with the interposing of a partition plate 52.
  • the width of the partition plate 52 is so determined that there may be made enough spacing between the holes 11, in order to prevent a short-circuiting.
  • cover plates 51, 51 On outer sides of connector units U.
  • cover plates 51, 51 are placed on outer sides of connector units U.
  • These components are assembled by means of bolts 53R and 53L and nuts 54R, 54R and 54L, 54L as shown in FIG. 12.
  • the number of connector units U is not limited to two, but any number of connector units U may be assembled into a connector assembly.
  • a large current up to for instance arnperes can be passed through the connector U. If it is desired to pass an electric current larger than 100 arnperes, one can use the next embodiment of the invention.
  • FIGS. 13, 14, 15, 16 show a fifth embodiment of the electric connector according to the invention.
  • the electric connector of this embodiment is particularly suitable for power applications in which wire conductors of quite large diameter or plugs of quite larger size as compared with the wire conductor connected thereto must be inserted into the connector.
  • an electrically conductive plate 3 is often insufficient to conduct an extremely large current with low resistance.
  • an auxiliary electrically conductive plate 22 As shown in FIG. 13, the spring means consisting of two retaining plate springs 5, 5, a clamping plate spring 6 and two reinforcing plate springs l5, I5, is disposed within a' hollow space 4 of a housing 1.
  • a bottom wall 2 of the housing 1 receives an electrically conductive plate 3.
  • the bottom wall 2 is further provided with a depressed portion 16, on the opposite side walls of the depressed portion 16 there are formed recesses 17 and 18, in which recesses are inserted both ends of a plate spring 19.
  • a hole 20 At a middle of the electrically conductive plate 3, there is formed a hole 20, through which hole 20 a stem 21 is loosely inserted.
  • an auxiliary electrically conductive plate 22 is secured.
  • the auxiliary electrically conductive plate 22 may be a metal plate having more or less elasticity, such as a plate of phosphor bronze.
  • the spring means is disposed, that is the lower end portions of the clamping plate spring 6 of W-shape lie on the top surface of the auxiliary plate 22.
  • the central pillar 23 of triangular shape is formed integral with the housing 1.
  • the spring means are arged against the central pillar 23 at its central point, so that the right and left hand half portions of the spring means can'be operated independently from each other by operating the right and left hand cam levers 7R and 7L separately.
  • FIG. 15 shows a side view of the housing 1 of the electric connector U shown in FIGS. 13 and 14.
  • FIG. 15 is a cross-sectional view of the housing 1 taken along a line A'A in FIG. 15.
  • the housing 1 may be made of electrically insulating material, such as synthetic resin with a use of a suitable mold.
  • the electric connector U according to the invention can be manufactured in a very simple manner by arranging the spring means including the retaining plate spring and the clamping plate spring 6; the plate spring 19; the electrically conductive plate 3; and the cam levers 7R and 7L within the hollow space 4 of the housing 1.
  • FIG. 17 shows a sixth embodiment of the electric connector U according to the invention.
  • the spring means consists of two retaining plate springs 5R, SR and SL, 5L which are separated at central points thereof and turned back at outer ends inwardly by an angle larger than 90, a clamping plate spring 6 of W-shape and two reinforcing plate springs and 15' disposed above and below the retaining plate springs SR and SL, respectively.
  • a central pillar 13 is arranged between the clamping plate spring 6 and the electrically conductive plate 3.
  • the central pillar 13 is formed integral with the housing 1. The height of the central pillar 13 is so selected that when the spring means is in its raised position as shown in FIG. 14, there may be formed a sufficient space for smoothly inserting the wire conductors into the connector U.
  • the present embodiment the spring means consists of two retaining plate springs 5R, SR and SL, 5L which are separated at central points thereof and turned back at outer ends inwardly by an angle larger than 90, a clamping plate
  • a salient feature of the present invention is in that any number of electric connectors hereinbefore described can be assembled together to form a connector assembly.
  • a suitable number of electric connectors U illustrated in FIG. 17 can easily be assembled and the thus assembled connectors are fastened together by end blocks 25 and 26 provided at both ends thereof.
  • the right and left hand cam levers 7R and 7L are commonly joumaled by a pair of shafts SR and 8L, respectively, extending through all of the connectors assembled. Both ends of the shafts 8R and SL are screwed by nuts 27R, 28R and 27L, 28L, respectively to fasten tightly a plurality of the connectors U together.
  • the reinforcing plate 29 has a cross-section similar to L. It is apparent that the shape of the reinforcing plate 29 may be any suitable shape such as a trough. In such a case, the shape of the recesses 30 and 31 fonned in the housing 1 and the end blocks 25, 26 must correspond to the shape of the reinforcing plate 29.
  • FIG. 20 shows such an application.
  • the electric connector assembly is composed of a plurality of the electric connectors U illustrated in FIG. 4.
  • a plurality of electrically conductive pins 41 are mounted on an electrically insulating member 42 with a given interval which corresponds to an interval between two subsequent holes 1 1 formed on side walls of the housing 1 (see FIG. 4).
  • all of the pins 41 are electrically coupled to a common electrical wire 43.
  • Various conductors may be permanently secured to the projections 3'.
  • An electric connector comprising a housing of electrically insulating material and including at least a bottom wall and being provided with a hollow space;
  • a spring means disposed within said hollow space of said housing and above said electrically conductive plate and consisting of at least a retaining plate spring having one end turned back inwardly at an angle larger than and a clamping plate spring of substantially V-shape disposed underneath said retaining plate spring;
  • a cam lever pivotally supported above said spring means so as to assume a first position to allow an insertion or an extraction of a conductor between said spring means and said electrically conductive plate and a second position to depress said spring means in a direction at substantially 90 with respect to said conductor so as to retain and clamp said conductor against said electrically conductive plate;
  • said means for supporting said spring means consisting of a pair of clamping members formed integrally with said housing, between which that end of the spring means which is opposite to said turned back end is loosely or tightly clamped.
  • An electric connector comprising a housing of electrically insulating material and including at least a bottom wall and provided with a hollow space;
  • a spring means disposed within said hollow space of said housing and above said electrically conductive plate and consisting of a retaining plate spring including ends both of which are turned back inwardly at an angle larger than 90 and a clamping plate spring of substantially W-shape disposed underneath said retaining plate spring;
  • An electric connector particularly suitable for power application comprising a housing of electrically insulating material and including at least a bottom wall and provided with a hollow space;
  • a spring means disposed within said hollow space of said housing and above said electrically conductive plate and consisting of at least a pair of half portions of a retaining plate spring cut at the central point outer ends of these half portions being turned back inwardly at an angle larger than 90, a clamping plate spring of substantially W-shape disposed underneath said retaining plate spring and two reinforcing plate springs disposed on and below said retaining plate spring, respectively;
  • a pair of cam levers disposed above said spring means and pivotally supported by a pair of shafts so as to assume a first position to allow an insertion or an extraction of a conductor into or out of said electric connector and a second position to depress said spring means so as to retain and clamp said conductor against said electrically conductive plate;
  • cam lever consists of a cam portion and a lever portion and said lever portion is provided with a recess, whereby said carn lever can be operated by means of a tool having a portion which can be inserted into said recess,
  • An electric connector particularly suitable for power applications comprising a housing of electrically insulating material and including at least a bottom wall and provided with a hollow space;
  • a spring means disposed within said hollow space of said housing and above said spring means and consisting of two retaining plate springs including-ends both of which are turned back inwardly at an angle larger than 90, a clamping plate spring of substantially W-shape disposed underneath said retaining plate springs and two reinforcing plate springs arranged on and below said retaining plate springs, respectively;
  • a pair of cam levers disposed above said spring means and pivotally supported by a pair of shafts so as to assume a first position to allow an insertion or an extraction of a conductor into or out of said electric connector and a second position to depress said spring means so as to retain and clamp said conductor against said electrically conductive plate;
  • a depressed portion being provided in said bottom wall of said housin a plate springiisposed in said depressed portion;
  • a means for supporting said spring means consisting of a stem and an auxiliary electrically conductive plate secured to said stem and extending in a direction parallel to said electrically conductive plate, said spring means being disposed on said auxiliary electrically conductive plate;
  • a central pillar formed integral with said housing between said clamping plate'spring and said auxiliary electrically conductive plate, the height of said central pillar being so determined that when one of said cam levers is actuated, one of half portions of said spring means can only be operated; whereby said means for supporting said spring means is movably arranged on said plate spring disposed in said depressed portion through a hole provided in said electrically conductive plate and the length of said stem of said supporting means is so determined that when said cam lever is in said first position, there may be formed a spacing between said electrically conductive plate and said auxiliary electrically conductive plate sufficient for inserting or pulling out said conductor therebetween without striking against said auxiliary electrically conductive plate.
  • An electric connector comprising a housing of electrically insulating material and including at least a bottom wall and provided with a hollow space;
  • a spring means disposed within said hollow space of said housing and above said electrically conductive plate and consisting of two pairs of half portions of a retaining plate, spring having outer ends each of which is turned back inwardly at an angle larger than a clamping plate spring of substantially W-shape disposed underneath said retaining plate springs and two reinforcing plate springs disposed on and below said retaining plate springs, respectively;
  • a pair of cam levers disposed above said spring means, and pivotally supported by a pair of shafts so as to assume a first position to allow an insertion or extraction of a conductor into or out of said electric connector and to a second position to depress said spring means to retain and clamp said conductor against said electrically conductive plate;
  • a central pillar formed integral with said housing for supporting said spring means at its central position, the height of said central pillar being so determined that, when said cam lever is in said first position, the spring means is supported at a raised position to form a spacing between said electrically conductive plate and the lower portion of said spring means sufficient for inserting or pulling out said conductor therebetween without striking against the lower portion of said spring means.
  • An electric connector assembly comprising a plurality of electric connectors as claimed in claim 7 disposed in a row;
  • At least one reinforcing plate having a non-straight crosssection and being tightly passed through recesses formed in the housings of said electric connectors, the shape of said recesses corresponding to said cross-section of said reinforcing plate;

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US74742A 1969-09-24 1970-09-23 Electric connector Expired - Lifetime US3671924A (en)

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JP1969090955U JPS4929016Y1 (enrdf_load_stackoverflow) 1969-09-24 1969-09-24

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US (1) US3671924A (enrdf_load_stackoverflow)
JP (1) JPS4929016Y1 (enrdf_load_stackoverflow)
FR (1) FR2064824A5 (enrdf_load_stackoverflow)
GB (1) GB1299766A (enrdf_load_stackoverflow)

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3824529A (en) * 1972-11-28 1974-07-16 Bunker Ramo Flat cable connector
US3895635A (en) * 1973-06-20 1975-07-22 Ndm Corp Electrosurgical grounding cable assembly
US4061408A (en) * 1976-09-07 1977-12-06 Minnesota Mining And Manufacturing Company Connector for a plate electrode
US4149766A (en) * 1977-05-28 1979-04-17 C. A. Weidmuller Kg Screwless terminals for electrical conductors
US4768969A (en) * 1986-03-10 1988-09-06 C. R. Bard, Inc. Electrical connector
US5078618A (en) * 1991-03-05 1992-01-07 Molex Incorporated Electrical contact socket
US5453028A (en) * 1994-05-11 1995-09-26 Molex Incorporated Electrical connector
US5575695A (en) * 1990-06-21 1996-11-19 Dynedeem Limited Electrical connectors
US5624281A (en) * 1994-12-14 1997-04-29 Christensson; Eddy K. G. Clasp structure for biomedical electrodes
USD489278S1 (en) 2003-02-18 2004-05-04 Functional Devices, Inc. Current sensor housing
US20050127895A1 (en) * 2003-12-10 2005-06-16 Functional Devices, Inc. Current sensor wire clamp
DE102009054373A1 (de) * 2009-11-19 2011-05-26 Bimed Teknik A.S., Büyükcekmece Anschlussklemme und Verwendung einer Anschlussklemme zum elektrischen Anschluss von Leitern
CN102097686A (zh) * 2010-12-20 2011-06-15 力帆实业(集团)股份有限公司 电缆接头连接装置
DE202010016710U1 (de) * 2010-12-17 2012-03-19 Weidmüller Interface GmbH & Co. KG Anschlussvorrichtung mit beweglichem Betätigungsmittel
EP2562878A2 (de) 2011-08-22 2013-02-27 Bimed Teknik A.S. Anschlussklemme zum elektrischen Anschluss von Leitern
CN104269662A (zh) * 2014-09-19 2015-01-07 国家电网公司 简便接地连接器
WO2018068842A1 (de) * 2016-10-12 2018-04-19 Siemens Aktiengesellschaft Elektrische kontaktanordnung und verfahren zur herstellung eines elektrischen kontaktes
CN117317678A (zh) * 2023-11-06 2023-12-29 广东材通实业有限公司 一种接线端子的连接结构

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS523661Y2 (enrdf_load_stackoverflow) * 1971-10-04 1977-01-26
FR2432777A1 (fr) * 1978-07-31 1980-02-29 Telemecanique Electrique Dispositif de connexion pour des extremites de barres omnibus disposees dans une gaine

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE544149A (enrdf_load_stackoverflow) *
DE904304C (de) * 1951-07-11 1954-02-18 Wilhelm Staffel Kipphebelklemme
FR85256E (fr) * 1963-07-08 1965-07-09 Borne à excentrique
US3324447A (en) * 1965-05-28 1967-06-06 Gen Electric Electrical connector
DE1254214B (de) * 1966-03-05 1967-11-16 Busch Jaeger Duerener Metall Klemme zum Anschluss eines in ein Gehaeuse eingefuehrten elektrischen Leiters bei einem Installationsgeraet
US3474389A (en) * 1968-04-12 1969-10-21 Hideo Nagano Electric connector

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE544149A (enrdf_load_stackoverflow) *
DE904304C (de) * 1951-07-11 1954-02-18 Wilhelm Staffel Kipphebelklemme
FR85256E (fr) * 1963-07-08 1965-07-09 Borne à excentrique
US3324447A (en) * 1965-05-28 1967-06-06 Gen Electric Electrical connector
DE1254214B (de) * 1966-03-05 1967-11-16 Busch Jaeger Duerener Metall Klemme zum Anschluss eines in ein Gehaeuse eingefuehrten elektrischen Leiters bei einem Installationsgeraet
US3474389A (en) * 1968-04-12 1969-10-21 Hideo Nagano Electric connector

Cited By (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3824529A (en) * 1972-11-28 1974-07-16 Bunker Ramo Flat cable connector
US3877774A (en) * 1972-11-28 1975-04-15 Bunker Ramo Flat cable connector
US3895635A (en) * 1973-06-20 1975-07-22 Ndm Corp Electrosurgical grounding cable assembly
US4061408A (en) * 1976-09-07 1977-12-06 Minnesota Mining And Manufacturing Company Connector for a plate electrode
US4149766A (en) * 1977-05-28 1979-04-17 C. A. Weidmuller Kg Screwless terminals for electrical conductors
US4768969A (en) * 1986-03-10 1988-09-06 C. R. Bard, Inc. Electrical connector
US5575695A (en) * 1990-06-21 1996-11-19 Dynedeem Limited Electrical connectors
US5078618A (en) * 1991-03-05 1992-01-07 Molex Incorporated Electrical contact socket
US5453028A (en) * 1994-05-11 1995-09-26 Molex Incorporated Electrical connector
US5624281A (en) * 1994-12-14 1997-04-29 Christensson; Eddy K. G. Clasp structure for biomedical electrodes
US5944562A (en) * 1994-12-14 1999-08-31 Christensson; Eddy K. G. Clasp structure for biomedical electrodes
USD489278S1 (en) 2003-02-18 2004-05-04 Functional Devices, Inc. Current sensor housing
US20050127895A1 (en) * 2003-12-10 2005-06-16 Functional Devices, Inc. Current sensor wire clamp
DE102009054373A1 (de) * 2009-11-19 2011-05-26 Bimed Teknik A.S., Büyükcekmece Anschlussklemme und Verwendung einer Anschlussklemme zum elektrischen Anschluss von Leitern
DE202010016710U1 (de) * 2010-12-17 2012-03-19 Weidmüller Interface GmbH & Co. KG Anschlussvorrichtung mit beweglichem Betätigungsmittel
CN102097686A (zh) * 2010-12-20 2011-06-15 力帆实业(集团)股份有限公司 电缆接头连接装置
CN102097686B (zh) * 2010-12-20 2013-04-03 力帆实业(集团)股份有限公司 电缆接头连接装置
EP2562878A2 (de) 2011-08-22 2013-02-27 Bimed Teknik A.S. Anschlussklemme zum elektrischen Anschluss von Leitern
DE102011081329A1 (de) 2011-08-22 2013-02-28 Bimed Teknik A.S. Anschlussklemme zum elektrischen Anschluss von Leitern
DE102011081329A9 (de) 2011-08-22 2013-06-13 Bimed Teknik A.S. Anschlussklemme zum elektrischen Anschluss von Leitern
EP2562878A3 (de) * 2011-08-22 2014-01-08 Bimed Teknik A.S. Anschlussklemme zum elektrischen Anschluss von Leitern
CN104269662A (zh) * 2014-09-19 2015-01-07 国家电网公司 简便接地连接器
WO2018068842A1 (de) * 2016-10-12 2018-04-19 Siemens Aktiengesellschaft Elektrische kontaktanordnung und verfahren zur herstellung eines elektrischen kontaktes
CN117317678A (zh) * 2023-11-06 2023-12-29 广东材通实业有限公司 一种接线端子的连接结构
CN117317678B (zh) * 2023-11-06 2024-05-28 广东材通实业有限公司 一种接线端子的连接结构

Also Published As

Publication number Publication date
JPS4929016Y1 (enrdf_load_stackoverflow) 1974-08-07
GB1299766A (en) 1972-12-13
FR2064824A5 (enrdf_load_stackoverflow) 1971-07-23

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