WO2000026928A1 - Interrupteur double - Google Patents
Interrupteur double Download PDFInfo
- Publication number
- WO2000026928A1 WO2000026928A1 PCT/FR1999/002604 FR9902604W WO0026928A1 WO 2000026928 A1 WO2000026928 A1 WO 2000026928A1 FR 9902604 W FR9902604 W FR 9902604W WO 0026928 A1 WO0026928 A1 WO 0026928A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- housing
- cable
- pads
- switch
- strands
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H1/00—Contacts
- H01H1/58—Electric connections to or between contacts; Terminals
- H01H1/5844—Electric connections to or between contacts; Terminals making use of wire-gripping clips or springs
- H01H1/585—Electric connections to or between contacts; Terminals making use of wire-gripping clips or springs and piercing the wire insulation
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
- H01R4/24—Connections using contact members penetrating or cutting insulation or cable strands
- H01R4/2416—Connections using contact members penetrating or cutting insulation or cable strands the contact members having insulation-cutting edges, e.g. of tuning fork type
- H01R4/2445—Connections using contact members penetrating or cutting insulation or cable strands the contact members having insulation-cutting edges, e.g. of tuning fork type the contact members having additional means acting on the insulation or the wire, e.g. additional insulation penetrating means, strain relief means or wire cutting knives
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H1/00—Contacts
- H01H1/12—Contacts characterised by the manner in which co-operating contacts engage
- H01H1/14—Contacts characterised by the manner in which co-operating contacts engage by abutting
- H01H1/20—Bridging contacts
Definitions
- the present invention relates to a double switch, usable in particular in the field of electromechanics.
- the double switch of the invention can be used in particular as a limit switch. It could however also be used in the relay field.
- the invention is more particularly advantageous if the switch is delivered by a supplier with a section of cable waiting to connect the various pads.
- the invention aims more particularly to simplify the manufacture of such switches both by reducing the number of parts necessary for its production and by simplifying assembly.
- a switch in principle comprises two pads each connected to a strand of cable, and a conductive element which comes into contact with these two pads or not, simultaneously or not.
- a double switch is of the same type. It comprises two conductive elements which, depending on the position of the switch, are pressed alternately against two pads of a pair of pads or against two others of pads of another pair of pads.
- a double switch therefore makes a connection for four strands of cable.
- the four cable strands are associated in the same cable. In practice, such a switch has a generally rectangular shape.
- Two studs are located at the two ends of one side of the rectangle, two other studs being located at the two ends of another side of the rectangle.
- the connection of the ends of the cable strands to the studs then requires connection pieces, inside the switch, which take account of this rectangular shape.
- connection pieces inside the switch, which take account of this rectangular shape.
- the studs and the cable strands In practice, even by adopting provisions of symmetry, since the cable will be brought by one of the sides of the rectangle, it will be necessary for the studs and the cable strands to have geometrically different shapes depending on the distance to be connected.
- the object of the invention is to remedy these problems by proposing forms of studs and a completely different connection mode.
- the need has been retained to manufacture studs with completely identical shapes. Therefore, instead of manufacturing four different pads, or even two when symmetry solutions are adopted, we will only manufacture one model, usable either at one position or at another in the switch.
- the studs are provided for this purpose with a narrow slot whose width is very slightly less than the diameter of the core of a strand of cable. If such a strand is then forced into such a slot, the sheath of the cable is cut as and when this strand is pressed into this slot.
- the studs have another, wide slot located next to the narrow slot through which a strand of cable can pass with its sheath without being stripped. If necessary, this wide slot is very slightly less in width than the diameter of a cable strand with its sheath. In this way this sheath is resiliently held in the stud. However, the difference in width is such that the sheath is only slightly crushed at the point where the slot in the stud passes, it is not sheared. There is no contact. By doing so the same pad makes both a contact on one strand of cable and the maintenance of the other. We will show that by doing this and by cleverly turning the studs inside the housing, we can easily connect all the strands of the cable.
- the invention therefore relates to a double switch comprising a housing, two pairs of two contact pads mounted side by side in this housing, a movable assembly in this housing driving two conductive elements, alternately, in contact with the two pads of a couple or another, to connect them electrically together , characterized in that these studs all have the same shape, this shape comprising a narrow slot and a wide slot, the narrow slot corresponding to a diameter of a conductive core of a strand of a cable for connecting this switch, the wide slot corresponding to the diameter of the sheath of such a cable strand, each of these studs being mounted astride two cable strands in parallel.
- FIG. 1 a plan view of a housing of a double switch according to the invention and the establishment of the connecting cable strands;
- FIG. 1 shows a double switch according to the invention.
- This double switch comprises a housing 1 and two pairs of contact pads.
- a first pair of contact pads is represented by pads 2 and 3
- a second pair is represented by pads 4 and 5.
- the pads are mounted side by side.
- the two pairs are mounted on two opposite edges of the housing 1.
- a mobile assembly 6 carries two conductive elements 7 and 8. The mobile assembly is intended to move in the housing 1 according to the double arrow 9 between the two pairs of pots. Depending on its position, alternately it brings the conductive element 7 into contact with the pads 2 and 3 of the first couple, or the conductive element 8 with the pads 4 and 5 of the second couple.
- the switch is a limit switch type
- the movable assembly 9 is actuated by a pusher which enters the housing 1 through an opening 10.
- the principle of the invention is applicable even if the switch is a simple switch in which the moving element is actuated by any body, even manually.
- the pads 2 to 5 all have the same shape.
- This shape is a substantially rectangular shape materialized by the contour 11.
- the pads are conductive and are made for example in a thin copper sheet, for example 0.5 mm thick. This copper sheet is cut to the shape desired for the studs.
- the studs have two slots 12 and 13 respectively: a narrow slot 12 and a wide slot 13. The two slots open on the same edge of a stud.
- the width of the slot 12 is very little less than the diameter of the core of the cable strand, while the width of the slot 13 is very little less but possibly equal to or greater than the diameter of the sheath of this cable strand.
- the stud can be perforated and include, in the upper part, cutouts 14 and 15 of substantially square shape. In this way the material weight is reduced.
- a tab 16 remaining between the two cutouts 14 and 15 is placed on a conductive patch, for example made of platinum or coated with a very conductive metal, for example gold.
- the patch 17 can have any shape in one example, it is substantially rectangular. In one example, when the patch 16 is visible, the slot 13 is in a lower left corner of the stud.
- Figure 1 shows how four strands of cable 18 to 21 are mounted in the housing 1, and electrically connected to the pads 2 to 5.
- the switch will be supplied and sold with a connecting cable which comprises the four strands 18 to 21 Beyond the location of the box 1 where these strands are connected to the pads 2 to 5, these strands 18 to 21 are joined together and swaddled in a common outer sheath.
- the particularity of the invention lies in the simplification of the connection. Indeed, it suffices on this cable to remove this outer sheath over a sufficient length so as to release the strands 18 to 21, with a useful length.
- the strands 18 to 21 all have the same useful length.
- the strands 18 to 21 are then arranged in the housing 1 in this order parallel to each other.
- the pads are then placed on the strands 18 to 21 in the following manner.
- the patch 17 is oriented towards the inside of the housing 1 so that the strand 18 and the strand 20 are spanned by the slots 13, and that the strands 19 and 21 have their metallic core pinched in the narrow slots 12.
- the conductive element 7 comes into contact with the pads 17 of the pads 2 and 3, it then naturally establishes an electrical connection between the strands 19 and 21 of the cable.
- the pads On the other side of the housing 1, the pads have been turned 180 ° so that their conductive pads face the conductive pads of pads 2 and 3. Under these conditions, the positions of the wide and narrow slots have been reversed by compared to the pairs of cable strands 18 and 19 on the one hand and 20 and 21 on the other hand. Under these conditions, the pads 3 and 4 will establish an electrical connection between these strands of cable 18 and 21 when the conductive element 8 comes into contact with their pad.
- Figures 3a and 3b show an alternative embodiment of the housing 1 and the method of mounting cables and pads inside this housing 1.
- Figures 4a and 4b show another variant.
- Figures 3a to 4b are seen in section in the direction AA of Figure 1.
- the housing 1 has a cover 22, here placed from below.
- the housing has grooves, parallel to the alignments of the conductive elements 7 and 8, by which the pads 2 to 5 are slid, tabs 16 forward, so that these come to rest against the cover 22. Under these conditions the slots 12 and 13 appear through an opening of the housing 1 opposite the cover 22.
- the housing 1 also has a shutter 23 provided with grooves 24 and 25 to receive the cable strands 18 to 21.
- the shutter 23 includes strips, perpendicular to the plane of the figure, 29 and 30 of dimensions slightly smaller than the widths of the slots 13 and 12 respectively useful for pushing the cable strands 18 and 19 to the bottom of these slots.
- the assembly in the case of Figures 3a and 3b is carried out as follows.
- the studs are placed in the housing through an opening corresponding to the cover. They are blocked in the housing 1 by placing the cover 22.
- the cable strands are placed in the shutter 23 and this shutter is approached from the assembly formed by the housing and its cover.
- This realization requires three parts: the cover, the housing and the shutter.
- the housing 1 and the shutter 23 are made in one piece, the cover 22 being always independent.
- the shutter assembly 23 and housing 1 has the same internal structures as the housing-shutter assembly of FIGS. 3a and 3b.
- the assembly is then as follows.
- the cable strands 18 and 19 and 20 and 21 are placed. Then on these cable strands thus presented in the bottom of the housing, the pads 2 to 5 are put in place, in accordance with Figure 1. Finally, the cover 22 is placed above the assembly.
- This embodiment requires only two parts. However, in this arrangement, the stud insertion tool must be more robust than in the case of FIG. 3a. Indeed, in the latter, taking into account the efforts necessary to achieve the lateral cutting of the cable sheath by the narrow slots, the shutter 23 can be produced in two pieces, a half-shutter 31 to cause the mounting of the cables 18 and 19, and a second half-shutter not shown for the other two cables 20 and 21. Such ease of assembly is not present in the case of FIG. 3a and 3b for which however the cost of manufacturing the parts is reduced since there is less room.
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP99950837A EP1127361A1 (fr) | 1998-11-03 | 1999-10-26 | Interrupteur double |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR98/13811 | 1998-11-03 | ||
FR9813811A FR2785440B1 (fr) | 1998-11-03 | 1998-11-03 | Interrupteur double |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2000026928A1 true WO2000026928A1 (fr) | 2000-05-11 |
Family
ID=9532308
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/FR1999/002604 WO2000026928A1 (fr) | 1998-11-03 | 1999-10-26 | Interrupteur double |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP1127361A1 (fr) |
FR (1) | FR2785440B1 (fr) |
WO (1) | WO2000026928A1 (fr) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN100477383C (zh) * | 2006-02-01 | 2009-04-08 | 矢崎总业株式会社 | 屏蔽电缆连接结构 |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2912548A (en) * | 1958-04-25 | 1959-11-10 | Francis A Wodal | Electric switch |
DE8528897U1 (de) * | 1985-10-10 | 1985-11-21 | Amp Deutschland Gmbh, 6070 Langen | Elektrischer Anschluß |
-
1998
- 1998-11-03 FR FR9813811A patent/FR2785440B1/fr not_active Expired - Fee Related
-
1999
- 1999-10-26 EP EP99950837A patent/EP1127361A1/fr not_active Ceased
- 1999-10-26 WO PCT/FR1999/002604 patent/WO2000026928A1/fr not_active Application Discontinuation
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2912548A (en) * | 1958-04-25 | 1959-11-10 | Francis A Wodal | Electric switch |
DE8528897U1 (de) * | 1985-10-10 | 1985-11-21 | Amp Deutschland Gmbh, 6070 Langen | Elektrischer Anschluß |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN100477383C (zh) * | 2006-02-01 | 2009-04-08 | 矢崎总业株式会社 | 屏蔽电缆连接结构 |
Also Published As
Publication number | Publication date |
---|---|
FR2785440B1 (fr) | 2001-01-26 |
FR2785440A1 (fr) | 2000-05-05 |
EP1127361A1 (fr) | 2001-08-29 |
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