JPS6188470A - Electric terminal - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a housing made of an insulating material; at least one contact piece having a slit-like opening laterally defined by a slit-like opening and an enlarged mouth at one end of the slit-like opening; a drive member movable at least substantially parallel to said edge of the contact piece to engage said edge of the contact piece;
The present invention relates to an electrical terminal having a

As I found out when actually using the above type of terminal,
This type of terminal is very suitable for electrically connecting solid conductors, i.e. conductors with a perfect cross-section, but it is also suitable for connecting conductors with a constant shape made of relatively thin wires. It is not very suitable for It is therefore an object of the invention to construct an electrical terminal of the type mentioned at the outset so that it is equally suitable for the connection of insulated strand-shaped electrical conductors as for the connection of solid conductors.

This object is achieved in an electrical terminal of the kind mentioned at the outset, in which, according to the invention, the contact piece consists of at least two mutually overlapping metal plate pieces, each contact piece having a slit-like opening and an enlarged mouth. This is achieved by passing through the slit-like opening and on each side of the slit-like opening, the blade-like edges of mutually adjacent metal plate pieces mutually offset at right angles to the longitudinal direction of the slit-like opening.

By configuring the contact piece of the terminal as described above, it is possible to bring the solid conductor and the wire conductor into perfect contact, and at the same time, it is possible to easily cut the insulating material of the conductor to be connected. .

Based on the purposeful configuration of the terminal according to the invention, 3 to 6
The contact piece can be constructed from a piece of metal plate. In this case, the mutually corresponding cutting edges of adjacent metal plate pieces are alternately offset to either side.

It is advantageous to provide openings of equal length and width in all metal plate sections of the contact piece. In this case, the apertures are alternately offset to either side so that the longitudinal cutting edges of the slit-like apertures in adjacent metal plate pieces are laterally offset relative to each other.

Details and advantages of advantageous embodiments of the electrical terminal according to the invention are set out in the dependent claims. The invention will now be described in detail with reference to the accompanying drawings, in which embodiments of the subject matter of the invention are shown.

The two rows of electrical terminals shown have two retaining legs 11 which secure the terminals to immovable support rails (not shown) in a known manner.
, 12 made of an insulating material. Inside the housing 10 there are two chambers which are open towards one flat side of the housing 10 (right side in FIG. 2) and towards the end face opposite to the retaining legs 11 and 12 (right side in FIG. 1). 13 and 14 are constructed and arranged in a mirror image relationship with each other. Both chambers 13 and 14 are provided with a plurality of stacked metal plate pieces 1s/, 1s'', 15''';ts'',
A common contact piece 15 of 15''/ is passed through.

It is expedient if the metal plate piece has spring properties. All metal plate pieces 15', 15": ls"& t,
It has the shape of a U-shaped member in cross-section and is adapted to one another so that the central web and the side U-legs of mutually adjacent metal plate pieces directly abut each other. That is, the U-shaped metal plate piece 15'.

ls″, 15′″ts″, and 15′″/ overlap in a straddling state. The central portion of the contact piece 15 passes through the opening 18 of the housing 10, as can be seen in FIG. The center part of the contact piece 15 has a screw nut 16 into which a screw 19 passing through the bore 20 of the housing can be screwed.
is press-fitted (Fig. 3).

Metal plate pieces 15', 15'', 15' constituting the contact piece 15
The central web of '' is provided with two relatively large openings 22, 63 (FIG. 3), each of which is identical in shape, size and position for all metal plate pieces. Furthermore.

Each end of the contact piece 15 is provided with a slit-like opening 24; 25 extending in the longitudinal direction of the contact piece and transitioning to an opening n;

Slit-like openings 24, 25 and enlarged mouth 26
゜T includes all metal plate pieces 15', 15"15",
15'''/ is passed through. The mouth part 2 of all metal plate pieces
The shapes, dimensions and positions of 6 and 27 are the same. On the other hand, slit-shaped openings 24, 25C, gold M plate piece 15',
15"l 15" (7)X! j 7 )-shaped notches (for example, 24', 24"24", 15'"/
).

The above-mentioned notches are equally long and have the same width, but the notches have slit-like openings with respect to the adjacent metal plate pieces; (See Figures 3 and 4). The slit-like openings 24', 24'', respectively, are delimited in the transverse direction by two parallel blade-like edges 24A, 24B. The metal plate pieces ls/, 15'', 15'';
By shifting the slit-like openings ls'', 15'''/towards the side as described above, the blade-like openings 24A of adjacent metal plate pieces correspond to each other, that is, on the same side of the slit-like opening 24. 24B is also alternately shifted at right angles to either side.The blade-like edges 24A and 24B are as follows:
As explained below, it serves to cut the insulation of an insulated electrical conductor connected to the terminal to make contact with the conductor.

The same applies to the further slit-like opening and the blade-like edges 25A, 25B which laterally limit this opening.

Corresponding to each other, i.e. slit-like openings 24; blade-like edges 24A, 24B; 25A on the same side of the legs;
, 25B from each other in the lateral direction [the length of the shift is 15' for each metal plate piece.

15', 15''' thickness is expedient. For example, when connecting electrical conductors with a cross section of 1.5-, the metal plate pieces 15', 15'', 15''' The thickness of each slit-like opening 24 is preferably 0.2-0.3u, and the number of metal plate pieces is suitably 3-6.The width of each slit-shaped opening 24; That is, during internal measurement, it must, of course, be adapted to the cross-sectional dimensions of the electrical conductors to be connected, approximately 80 inches of the nominal diameter of a solid conductor or approximately 65 inches of the nominal diameter of a conductor in the form of strands. It is purposeful to do so.

Each of the two chambers 13 and 14 of the housing 10 has a contact piece 150 opening 22;
A movable drive member 28; 29 is rotatably supported on the housing 10 by a movable drive member 31. axis 30,
31 extends at right angles to the longitudinal direction of the slit-like openings 24 , 25 on the side of the contact piece 15 facing the holding legs 11 , 12 . The shafts 30, 31 are expediently constructed in one piece with the housing 10. Each drive member 28 has an opening 32 extending generally radially relative to the axis 30 ; 31 concerned and open on the side opposite said axis to receive an insulated conductor. As is clear from FIG. 1, some of the openings 33 provided in the drive member are in the form of open grooves 33A, some in the form of bores 33A, with closed peripheral walls and the insertion of insulated conductors. Closed end 3 to limit depth
It is equipped with 3C. The opening 32 of the further drive member 28 is
It is constructed in mirror image symmetry with the above-mentioned openings.

Each drive member 28; 4 further includes an elongated notch 34;
5 is provided, and this notch has a slit-like opening 24.
; contact piece 15 with an enlarged mouth 26 ;
engage with sufficient clearance, thus preventing pivoting movement of the drive member.

The drive members 28; each can be pivoted between a conductor introduction position and a contact position. FIG. 1.2 shows one drive member 4 in the conductor introduction position and the other drive member 4 in the contact position. When the drive member 28 is in the conductor introducing position, the opening 32; 33 coincides with the position within the expanded opening 26 of one end of the slit-like opening 5 of the contact piece.

Open the insulated conductor 32; O closed end 32C:; 33
You can freely introduce up to G. On the other hand, the driving members 28 and 29
is in the contact position, the openings 32; 33 are slit-shaped! Opening h: 25 blade-like edges 24A
, 24B; 25A, 25B at a position near the opposite end of the opening (drive member 28 in FIG. 2). In order to fix each drive member 28; 29, inside the corresponding chamber 13; 14 of the housing 10 there is a
Abutment protrusions 36 and 37 are provided.

Each drive member tone 29 is an opening 63; 6 of the housing 1o.
4 is acted upon by compression coil springs 61; 62, which are mostly accommodated in One end of each spring 61 ; 62 is connected to the opening 6
3; supported on the closed end 65; 66 of 64;
On the other hand, the other end of the spring comes into contact with the nose-like protrusion 67 of the corresponding drive member 28; 29. Spring 61; 62
act to drive the corresponding drive member arm into the above-mentioned contact position (see drive member arm in FIG. 1). Each drive member 28; in addition, there is also a rod-shaped tool 71 (for moving the drive member from the contact position to the conductor introduction position (drive member 29 in FIG. 1) against the action of the associated spring 61; 62; For example, an auxiliary bore 69 into which a driver (see FIG. 1) is inserted;
70 is the default.

The manner of use and operation of the above-mentioned terminal array will be explained below.

The terminal is fixed to an immovable support rail by means of holding legs 11, 12 of the housing 1o, and the diameter of each conductor to be connected to the terminal is defined by the slit-shaped opening U of the contact piece 15.

Assume that it is slightly wider than the width of the legs. Therefore, the outer diameter of the conductor insulation is larger. When connecting an electrical conductor to the lower end of the contact piece 15 (FIGS. 1 and 2), first, for example, the bore 7
By r life buff 1 inserted into 0.

The drive member 4 is pivoted to the conductor introduction position (FIG. 1).

In this case, the opening of the drive member 29 corresponds to a position within the enlarged part n of the slit-shaped opening of the contact piece 15. Next, the electrical conductor to be connected is introduced between the openings without peeling off the insulating material, and the front end of the insulated conductor is brought into contact with the closed end 33G between the openings. Driver 4 is then used as a lever to pivot drive member 29 into the contact position. in this case.

The insulated conductor is driven along the slit-like aperture 5 of the contact piece 15 in a direction substantially parallel to the blade-like edges 25A, 25B, enters the enlarged mouth 27 and then into the slit-like aperture. . Thus, the blade-like edges 25A, 25B
The insulation of the conductor is cut laterally, and the exposed portion of the conductor contacts the edge. Since the conductor of the insulating mass is guided by the opening 33 of the drive member 29, bending of the conductor is prevented when it is pressed into the slit-like opening 25. If the width of the slit-shaped opening leg matches the diameter of the conductor as described above, the conductor will be deformed to some extent in the lateral direction of the slit-shaped opening, and at the same time, the opening will also expand slightly elastically. Each metal plate piece 15', 15'', 15'
Since the thickness of 〃 is relatively thin, the electrical conductor can relatively easily adhere to the alternating laterally offset blade-like edges 25A, 25B.

Therefore, the electrical contact between the conductor and the contact piece 15 is considerably improved. This advantage is particularly noticeable when the conductor is a wire. The connected conductor.

The contact piece 15 is constantly pressed against the closed end of the slit opening 25 via the drive member 29 by the action of the spring 62.
Not only is it effectively prevented that the conductors are unintentionally removed, but also, if the conductors consist of bare wires, the wires of the bare wires are constantly pressed against each other and against the contact piece.

Since each metal plate piece 15', 15'', 15'' has spring properties, the blade-like edges 25A, 25B elastically press the connected conductor from both sides. In this way, excellent electrical contact can be achieved between the contact piece 15 and the conductor to be connected, regardless of whether the conductor is a solid body or a wire.

The insulated second conductor can likewise be brought into contact with the blade edges 24A, 24B of the further slit-like opening 24 of the contact piece 15. That is, the second conductor is introduced into the opening 32 of the drive member 28, and the drive member sleeve is then pivoted to open the second conductor.
The conductor may be press-fitted into the slit-shaped opening U. Thus,
An electrical connection is obtained between both conductors connected to the contact piece 15.

In the case of the terminal described above, it is furthermore possible to disconnect the conductor to be connected from the contact piece 15 and remove it from the terminal.

To remove the conductor in contact with the edges 24A, 24B of the slit-like opening 24, a rod-shaped tool (e.g., a screwdriver) is introduced into the bore 69 of the drive member 28, and then the tool moves the drive member to the opposite side. drive to the final position.

In this case, the electrical conductor is slid into the expanded opening 26 by means of the closed peripheral wall of the inner part 32B of the opening 32 of the drive member sleeve, and thus.

It comes off from the blade-like edges 24A, 24B for each opening. The conductor can thus be drawn out of the opening 32. When removing a conductor that comes into contact with the edges 25A, 25B of another slit-shaped opening 25, the same operation is performed.

As is clear from the above description, the connection and disconnection of insulated conductors can be carried out quickly and easily, without the need to remove part of the insulation, but to manipulate the tightening screws. Nor.

In some cases, instead of the pivotable drive members 28, 29, it is also possible to use drive members configured as slides mounted on the housing 10 so as to be slidable back and forth.

Furthermore, embodiments with only one drive member (eg 28 or 29) are also useful and expedient. in this case,
The second connection point of the contact piece 15 is one, for example, a screw 19.
must be formed by

[Brief explanation of drawings]

FIG. 1 shows a preferred embodiment of the electrical terminal according to the present invention,
The upper half is a side view, the lower half is a sectional view taken along line l-1 in Figure 2, Figure 2 is a right side view of the terminal in Figure 1, and Figure 3 is a drawing of the contact piece of the terminal. , FIG. 4 is an enlarged cross-sectional view taken along line 4--4 of FIG. 10...Housing, 15 (15', 15'',
15''')・!・Contact piece.

Claims (1)

Claims: 1) a housing made of an insulating material; laterally limited by mutually opposed bladed edges disposed within the housing for cutting the insulation of the electrical conductor and making contact with the conductor; at least one contact piece having a slit-like aperture in which the slit-like aperture is formed and an enlarged mouth at one end of the slit-like aperture; movably guided in the housing for engaging the conductor and the blade-like edge; and a drive member movable at least approximately parallel to said edge of the contact piece, in which the contact piece (15) comprises at least two superimposed metal plate pieces (15', 15'', 15'''), and each metal plate piece has a slit-like opening (24; 25).
and an enlarged mouth part (26; 27) is bored therein;
On each side of the slit-like opening (24; 25), the blade-like edges (24A, 24B; 25A, 25B) of the mutually adjacent metal plate pieces (15', 15'', 15''') ;25) Terminals characterized in that they are mutually offset at right angles to the longitudinal direction. 2) The contact piece (15) has at least three metal plate pieces (15)
', 15'', 15'''), and the mutually corresponding blade-like edges (24A, 24B; 25A, 25B) of the overlapped metal plate pieces (15', 15'', 15''') 2. The terminal according to claim 1, wherein the terminals are alternately shifted toward the side. 3) All metal plate pieces (15', 15'', 15''') have slit-like openings of equal length and width, and the adjacent metal plate pieces (15', 15'', 15''') 3. A terminal according to claim 2, wherein the slit-like openings are alternately offset to either side. 4) When viewed in the longitudinal direction of the slit-shaped opening (24; 25), all the metal plate pieces (15', 15'', 15''') are configured in a U-shape, and the metal plate pieces that are adjacent to each other are (15', 1
5'', 15''') and the U-shaped legs are in direct abutment to each other, and the slit-like openings (24; 25) and the enlarged mouths (26; 27) are connected to the U-shaped metal 4. Terminal according to claim 1, characterized in that it passes through the central web of the plate piece (15', 15'', 15'''). 5) Mutually corresponding blade edges (24A, 24B; 25A, 25B) of metal plate pieces (15', 15'', 15'')
according to one of claims 1 to 4, characterized in that the lengths of the two metal plate pieces mutually offset at right angles to the longitudinal direction of the metal plate pieces are approximately equal to the thickness of each metal plate piece. terminal. 6) according to one of claims 1 to 5, characterized in that each metal plate piece (15', 15'', 15''') has a thickness of 0.2 to 0.3 mm. terminal. 7) Overlapping metal plate pieces (15', 15'', 15'''
7. Terminal according to claim 1, characterized in that the number of ) is from 3 to 6. 8) the drive member (28; 29) has an opening (32; 33) serving to receive the end of the insulated conductor and is capable of reciprocating movement between the conductor introduction position and the contact position;
When the drive member (28; 29) is in the conductor introduction position,
The opening (32; 33) of the driving member can be aligned with a position within the mouth (32; 33) of the slit-like opening (24; 25) of the contact piece (15), and the driving member (2
8; 29) are in the contact position, the openings (32; 33) of the driving member are brought into contact with the blade-like edges (24A, 24B;
A, 25B) can be matched to a position near the opposite ends of (24; 25), and the drive member (28; 29) is operative to move the drive member into the contact position. 8. Terminal according to claim 1, characterized in that it is subjected to the action of a spring (61; 62). 9) The springs (61; 62) are coil springs;
1; 62) is supported in the closed end (65; 66) of the chamber (63; 64) partially receiving said spring, while the other end of the spring (61; 62) is Element(
9. The terminal according to claim 8, wherein the terminal contacts the nose-shaped projections (61; 62) of the terminals (28; 29). 10) Metal plate piece (15', 1
10. Terminal according to claim 1, characterized in that the terminals (5", 15'") have spring properties.