JPH02247984A - Clamp connector element and plug housing - Google Patents

Abstract

PURPOSE: To securely position and fix a lead wire without requiring additional work during assembling by connecting a cut-in clamp lug plate base body and a connector spring arm base body. CONSTITUTION: A connector spring arm substrate 10 is connected to a transverse edge of a cut-in clamp lug plate base body 4 on a side of a plug connection portion 2 via a connection piece 9, and the base body 10 is wider than a base body 4, is bent by 180 degrees, and abuts with the base body 4. The substrate 10 is bent at a right angle at each longitudinal edge of the substrate 10 and a support lug plate 14 is connected, and this support lug plate 14 extends with an interval parallel to a corresponding cut-in clamp lug plate 14. A fixed edge 18 is bent at a right angle in a direction of the lug plate 14 at a longitudinal edge 17 of the leg plate 7 and abuts against the lug plate 14.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a notched clamp connector element made of stamped sheet material and a plug housing, such as made of synthetic material, into which the notched clamp connector element is inserted.

BACKGROUND OF THE INVENTION A notched clamp connector element of this type and a housing designed as a plug for a plurality of such notched clamp connector elements are known from German Utility Model No. 8528897.

This known notch clamp connector element substantially comprises a plug connector part having a relatively flexible spring arm for a mating plug connector element and a metal core of the lead wire for receiving an electrical lead wire and having an insulating cover. It is equipped with a notch and a clamp connector part for The notch clamp portion has two notch clamp ears arranged parallel to each other and spaced apart and bent at right angles from the plate-like base body. Each of the cut clamp ears is provided with a cut clamp slit which opens on the side opposite the plug connector part and into which the electrical lead wire is pushed at right angles to the longitudinal axis of the lead wire. The edge of the slit cuts into the insulated part of the lead wire and electrically connects to the metal core wire. A notched clamp connector element is mounted within the chamber of the plug housing. A cut-out clamp slit of the cut-out plug connector element placed in the housing chamber is formed to be open to the outside, and a lead wire is press-fitted into the cut-out clamp slit by a separate assembly tool.

In the subject of German Utility Model No. 8528897, it is known that after the lead wire is cut and pushed into the clamp slit, the slit edge tilts and the lead wire is pulled out from the slit. To avoid this, the lead wire is fixed in position with a lead wire holding projection provided on the cap of the plug housing. The cap must be fixed so that the cap and thus the lead wire do not move; the cap is an additional component that is not always necessary and requires additional work when installing the housing. From this point of view, this publication proposes providing a lead wire restrainer on the plate-shaped base of the cut clamp portion. This lead wire holder must be turned after the lead wire has been pushed into the clamping slit, which also imposes an extra assembly operation. Furthermore, since a spring force acts when the lead wire holder moves backward when the lead wire holder is bent, insufficient mechanical and geometrical connection of the lead wire holder cannot be guaranteed. For this reason,
This does not provide sufficient support, so that in this embodiment of the notched clamp part there is a risk that the notched clamp ears will bend.

This known notched clamp connector element is furthermore provided with a retaining tongue which acts in a known manner on the engagement lip of the housing chamber. Additionally, the free corner edges of the notched clamping ears are bent at right angles to face each other to form a retaining piece located on the mating side corresponding to the respective housing chamber.

In this prior art, in particular, the lead wire must be pushed into the cut-out clamp slit and then the clamping piece or the lead wire hold-down piece must be bent over the lead wire.
The disadvantage here is that the clamping piece cannot guarantee sufficient positional fixation.

[Problem to be solved by the invention] The problem to be solved by the present invention is to provide a plug that is inserted into a chamber of a plug housing,
At the time of insertion, a notch clamp connection is made,
It is an object of the present invention to provide a notched clamp connector element with very high bending strength, in which the means for fixing the position required during assembly do not require any additional work.

[Means for Solving the Problems] The above object is a cut-out clamp connector element made of a punched plate that includes a longitudinally extending plug connection portion and a cut-out clamp portion, and is inserted into a housing chamber of a plug housing, wherein the cut-out clamp portion is inserted into a housing chamber of a plug housing. is provided with means for securing the notched clamp connector element within the housing chamber and a substantially square notched clamp ear plate base, the notched clamp ear plate being folded at right angles from the longitudinal edge of the notched clamp ear plate base. The notch clamp is bent and is provided with an open notch clamp slit extending from the plug connection and connected to its free longitudinal edge by a fastening piece bent at right angles; It has two parallel, spaced apart spring arms;
The free end of this spring arm is provided with a contact piece bent at right angles and arched and forming a contact section for the counter contact, with a notched clamping ear pointing towards said plug connection. A connector spring arm board is connected to the side edge of the board base via a connecting piece,
This connector spring arm board is wider than the notch clamp ear plate base, is bent 180 degrees and comes into contact with the notch clamp ear plate base, and is bent at right angles at each longitudinal edge of the connector spring arm board. The support ears are bent and connected, and the support ears extend parallel to and spaced apart from the corresponding notched clamp ears, and at the longitudinal edges of said notched clamp ears, the fixing edges connect the support ears. The solution is achieved by a clamp connector element which is characterized in that it is bent at right angles to the direction of the plate and abuts against the supporting tab.

Preferred embodiments of the invention are set out in the other claims.

[Operations and Effects] With the above configuration, the lead wire can be reliably fixed in position without requiring additional work during assembly.

Embodiment A notch-clamp connector element 1, which is substantially square in cross-section, usually connects a plug connection part 2 and a notch-clamp part 3.
It is composed of.

The notch clamp part 3 comprises a rectangular notch clamp ear plate base 4, from the longitudinal edges of which each notch clamp ear plate 7 is bent at right angles, this ear plate preferably having the same length as the notch clamp ear plate base 4. have Each cut clamp ear plate 7 is provided with a cut clamp slit 8 which extends in a direction away from the plug connection part 2 and is open. A connector spring arm board 10 of the same length is connected via a connecting piece 9 to the side edge of the notched clamp ear plate base 4 facing the plug connection part 2, and this connector spring arm board 10 is connected to the notched clamp ear plate base 4. The connector spring is approximately half or more wider than the ear plate base 4 and is bent by 180 degrees to contact the cut clamp ear plate base 4, with the connector spring facing toward the plug connection part 2. A short clamp batten 11 is connected to the lateral edge of the arm board, and this clamp batten 11 is pressed against the corresponding lateral edge of the notched clamp ear plate base 4 by rolling, and is elastically supported there. has been done.

The connector spring arm board 10 has a free longitudinal edge extending from the lateral edge where it connects with the connection piece 9 to approximately half its length, and a free longitudinal edge is provided at the longitudinal edge of the connector spring arm board 10. A tooth row 13 with saw teeth 12 is provided, the function of which will be described later. Following the row of teeth 13, a support ear plate 14 is connected to the remaining half of the longitudinal edge of the connector spring arm base plate 10 and is bent at right angles so that the support ear plate 14 is connected to the corresponding notched clamp ear plate 7. They run parallel and spaced apart.

The support ear plate 14 is slightly wider than the notched clamp ear plate 7 (so that the free longitudinal edge of the support ear plate 14 has saw teeth 15).
A tooth row 16 having a dentition 16 is provided. The function of this tooth 15 will also be discussed later.

In relation to the support ear plate 14, a fixing piece 18 bent at right angles in the direction of the support ear plate 14 is connected to the longitudinal edge 17 of the notched clamp ear plate 7, and the fixing piece 18 and the support ear plate 14 are in contact with each other. It is configured to fit. Since the slit 8 is longer than the tooth row l3, the special arrangement of the support plate 14 ensures that the lateral edge 19 of the support ear plate 14 facing towards the tooth row 13 essentially creates the base of the incision clamping slit 8. It makes it possible.

A spring arm 20 having a square cross section is integrally provided on each of the connector spring arm board 10 and the support ear plate 14, together with a support ear piece 21 and a base plate piece 22 that are bent at right angles to each other.

At the free end of the board piece 22, a short curved contact piece 2
3 is bent at a right angle and extends substantially parallel to the support tab 21. Both warm-curved contact pieces 23 of the spring arm 20 form a contact portion for a mating contact (not shown). Due to its special three-dimensional shape, the spring arm 20 is relatively stiff in bending and provides a good elastic curve.

The notched clamp connector element l according to the invention is inserted into the housing 24 and is preferably mounted on an angle body having a chamber body 25 and a lead wire support 26, as shown.

A chamber 27 having a rectangular cross section within the chamber 25 corresponds in its dimensions to the cut-out clamp connector element l, and the floor 2 is located on the opposite side of the insertion opening 28.
It is equipped with 9.

Lead wire holders 30, 31, 32 extending in a row in the direction of the lead wire support 26 are arranged on this floor 29, and between the holders 30 and 31 a slip top 33 is arranged. A slit 34 is provided between the pedestals 31 and 32. A concave groove is formed in the surface 40 of the pedestal 30, 31, 32, which is adapted to the shape of the lead wire 35 placed on the pedestal.

A cylindrical lead wire insertion path 36 is provided in the lead wire support 26 in the direction of the chamber 25 for each chamber 27,
The inlet channels 36 each open into the chamber 27 in the region of the cradle 32, so that the lower side of the receptacle groove is aligned with the bottom surface of the inlet channel 36 located there.

The invention ensures that the incision clamping means performs a different function than in the prior art and in a simple manner. The lead wire 35 is inserted from the road opening 37 into the road 36
Then, the notched clamp connector element 1 with the notched clamp part 3 passes through the spigot 28 into the chamber 27 and is not received in the cradle 30.31. When inserted, the front end of the ear plate 7 projects into the slit 33, 34 between the cradle. At this time, the blade of the ear plate 7 creating the cut clamp slit 8 cuts the insulating portion 38 of the lead wire 35 and comes into contact with the core wire 39 of the lead wire (right side in FIG. 2). To fix the position of the notched clamp connector element l in this configuration in the chamber 27, the teeth 15 and also the teeth 12, if formed, engage a corresponding wall in the chamber 27. The lead wire 35 is held down in the cradle 30.31.32 by the edge 19 of the support ear plate 14 (see FIG. 4), the teeth 15 to 12 are firmly engaged in the wall material of the chamber housing and are in contact with each other. The end of the lead wire that should be used is held so that it cannot be pulled out. Since the support ear plate 14 is supported against the corresponding chamber wall (the fourth
), it is also possible to weaken the tension. Since the clamping of the lead wire 35 is strong, the lead wire 35a can be bent at right angles and exit from the housing 24, that is, the lead wire support 26, just before the cradle 32. The lead wire 35a is indicated by a dotted line in FIG.
It is.

A further advantage of the invention is that the cut-out clamp connector element 1 is inserted in a locked manner into the chamber 27 of the housing 24, with the cut-out clamp part 3 being inserted into the channel opening 41.
, with only the end of the spring arm 20 protruding from the housing, and the notch clamp connector element 1 being held in that position by the engagement of the teeth 15 or 12 with the corresponding side wall. The lead wire 35 can move freely within the inserted housing. Thereafter, the notched clamp connector elements 1 are pressed down one by one or together to create a cut-off clamp connection.The cut-off clamp connection according to the invention is particularly advantageous when compared to the prior art, especially when the cut-out clamp connector elements 1 are pressed down one by one or together. This locking into the chamber 27 makes it electrically safer. In this case, the assembly is very simple, and within the framework of the invention it is also possible to remove teeth 12 and/or 15 and simply provide a protruding longitudinal edge, which penetrates into the chamber wall and thereby Alternatively, we would like to emphasize that sufficient fixation can be obtained by locking part of the corner. Also, a single tooth may be used instead of a row of teeth.

Incidentally, although reference numerals are written in the claims section for convenient comparison with the drawings, the present invention is not limited to the structure shown in the accompanying drawings.

[Brief explanation of drawings]

Figure 1 is a perspective view of the notch clamp connector element and the plug housing to which it is attached, and Figure 2 is the initial position of the inserted notch clamp connector (left side).
A cross-sectional view of the plug housing in the housing chamber area showing the state in the final engaged position (right side), FIG. 3 is a cross-sectional view taken along the line A-A in FIG. 2, and FIG. 4 is a cross-sectional view taken along the line B-B in FIG. 2. FIG. 5 is a bottom view of the plug housing seen from the direction of arrow Z in FIG. 2. (2)...Plug connection part, (4)...
Incision clamp ear plate base, (7)...Clamp ear plate, (9)...Connection piece, (10)...
...Connector spring arm board, (14)...Support ear plate, (17j...Longitudinal edge, (18)...
...Fixed hem.

Claims (1)

[Scope of Claims] 1. A cut-out clamp connector element made of a punched plate that includes a longitudinally extending plug connection portion and a cut-out clamp portion and is inserted into a housing chamber of a plug housing, wherein the cut-out clamp portion is notched into the housing chamber. Means for securing the clamp connector element and a substantially square notched clamp ear base are provided, the notched clamp ears are bent at right angles from the longitudinal edges of the notched clamp ear base, and the notched clamp ears are bent at right angles to the notched clamp. is provided with an open cut-out clamp slit extending from the plug connection and connected to its free longitudinal edge by a fixing piece bent at right angles, and the plug connection has two parallel and spaced apart fixing pieces. The plug has an open and extending spring arm, the free end of which is provided with a contact piece bent at right angles to form a contact section for an arcuate and counter-contact; A connector spring arm board (10) is connected via a connecting piece (9) to the side edge of the notched clamp ear plate base (4) facing the connection part (2). ) is wider than the cut clamp ear plate base (4) and is bent 180 degrees to form the cut clamp ear plate base (4).
The supporting ear plates (14) are bent at right angles at each longitudinal edge of the connector spring arm board (10).
) are connected, the supporting ears (14) extending parallel to and spaced apart from the corresponding notched clamp ears (7) and extending along the longitudinal edges (17) of said notched clamp ears (7). By the way, the fixed edge (18) is attached to the support ear plate (1
4) A clamp connector element that is bent at right angles in the direction of (4) and abuts against the support ear plate (14). 2. The clamp connector element according to claim 1, characterized in that the notched clamp ear plate base (4) and the connector spring arm base (10) have the same length. 3. Attach a short clamp batten (
11) are connected, and this clamp eye plate (11) is rolled up to form the notched clamp ear plate base (4).
3. The clamp connector element according to claim 1, wherein the clamp connector element is pressed against the clamp connector element. 4. The connector spring arm board (10) is provided with a free longitudinal edge from the lateral edge connecting with the connecting piece (9) to approximately half its length. 4. The clamp connector element according to any one of 1 to 3. 5. Clamp connector element according to claim 4, characterized in that the support ear plate (14) is connected to the remaining half of the longitudinal edge of the connector spring arm base plate (10). 6. The connector spring arm board (10) and the support ear plate (
14) each has a spring arm (20) with a square cross section.
Claims 1 to 3 are characterized in that: are integrally provided.
5. The clamp connector element according to any one of 5. 7. Any one of claims 1 to 6, characterized in that the means for fixing the cut-out clamp connector element in the housing chamber comprises a protruding lip or a protruding corner that engages or clamps the wall of the housing chamber. Clamp connector element described in . 8. Clamp connector element according to claim 7, characterized in that the means for securing the notched clamp connector element consist of at least one tooth. 9. The free longitudinal edge of the support ear plate (14) is sawtoothed (1
9. Clamp connector element according to claim 7 or 8, characterized in that it comprises a toothing (16) having a toothing (5). 10. Claim 7, wherein each of the free longitudinal edges of the connector spring arm board (10) is provided with a row of teeth (13) having laterally projecting saw teeth (12).
10. The clamp connector element according to any one of 1 to 9. 11. The clamp connector element according to any one of claims 1 to 10, which is inserted into the chamber (27) of the housing (24), wherein the housing (24) has a chamber (25) and a lead wire support (26). is an angular structure having a rectangular cross-section within the chamber (25), the chamber (27) having dimensions that are similar to the notched clamp connector element (
1) and is equipped with an insertion port (28) and a floor (29) located on the opposite side, and this floor (2
9) includes lead wire holders (3) extending in a row in the direction of the lead wire support (26).
0, 31, 32) are arranged, and its cradle (30
) and (31), a slit (34) is provided between the pedestals (31) and (32), and a chamber (34) is provided in the lead wire holder (26). 27)
In each case, in the direction of the chamber (25), a cylindrical lead insertion channel (36) is provided, which in each case opens into the chamber (27) in the area of the cradle (32). A clamp connector element characterized by: 12. Surface (40) of the pedestal (30, 31, 32)
Claim 1 characterized in that a groove is formed in a groove shape.
1. The clamp connector element according to 1. 13. Claim 1, wherein the groove of the pedestal is in line with the floor surface of the corresponding insertion path (36).
13. The clamp connector element according to 1 or 12.