阅读说明：本技术 电连接器壳体 (Electric connector shell ) 是由 R·阿尔齐泰科特 P·考特 M·莱森 于 2020-02-04 设计创作，主要内容包括：本发明涉及电连接器壳体。该电连接器壳体具有括多个插座腔(16),所述插座腔构造成在其中接纳从后部引入的单端子插入件或总线插入件插入件(46)。至少一排插座腔(16)形成为圆柱形的腔,该圆柱形腔在所述壳体中沿着从后部伸向前部的插入方向(C)平行地延伸,所述排中的相邻腔被分隔壁(78)分开。第一锁定装置(82)设置在插座腔中,用于将布置在给定腔中的单端子插入件(22)锁定在适当的位置；并且设置有第二锁定装置(92),用于将插入相应数量的插座腔中的总线插入件(44)锁定在适当的位置。分隔壁(78)在后部中包括沿插入方向(C)延伸的槽缝(79),以容纳总线插入件(44)的总线板(48)。(The invention relates to an electrical connector housing. The electrical connector housing has a plurality of receptacle cavities (16) configured to receive a single terminal insert or bus insert (46) therein introduced from the rear. At least one row of socket chambers (16) is formed as cylindrical chambers extending in parallel in an insertion direction (C) in the housing from the rear to the front, adjacent chambers in the row being separated by a partition wall (78). First locking means (82) are provided in the socket cavity for locking a single terminal insert (22) disposed in a given cavity in position; and second locking means (92) are provided for locking the bus inserts (44) inserted into the corresponding number of socket cavities in position. The partition wall (78) includes a slot (79) in the rear portion extending in the insertion direction (C) to receive the bus bar board (48) of the bus bar insert (44).)

1. An electrical connector housing, comprising:

an insulative housing body (12) including a plurality of socket cavities (16) configured to receive a first type of contact insert or a second type of contact insert therein;

a contact insert (22) of the first type, called a single-terminal insert, and formed as an elongated conductor designed to engage in a single socket; and

the second type of contact insert (44), referred to as a bus insert, includes a plurality of spaced parallel terminals (46) extending from a bus board (48) and designed to engage the terminals in a corresponding number of receptacles aligned in rows,

the housing includes:

a front portion (14) for connecting a terminal of an electrical component to the contact insert (22, 44) arranged inside the housing;

an opposite rear portion (18), the contact insert (22, 44) being inserted into the cavity (16) from the rear portion (18);

at least one row of said socket cavities formed as cylindrical cavities extending in parallel fashion in said housing along an insertion direction (C) extending from said rear portion to said front portion, adjacent cavities in said row being separated by a dividing wall (78);

wherein first locking means (82) are provided in said socket cavity for locking a single terminal insert (22) disposed in a given cavity in position;

wherein the second locking means (92) is arranged to lock the bus inserts (44) inserted into a corresponding number of the socket cavities in position; and is

Wherein the partition wall (78) comprises a slot (79) in the rear portion extending in the insertion direction (C) to accommodate the bus board (48) of the bus insert (44).

2. An electrical connector housing according to claim 1, wherein the first locking means comprises a pair of projections (82), the projections (82) being arranged on opposing walls (78) in the cavity and defining forwardly facing substantially transverse locking surfaces (82.3) for abutting resilient tabs (40) extending outwardly from the single terminal insert when the single terminal insert is locked in position in the cavity.

3. Electrical connector housing according to claim 1 or 2, wherein an axially extending notch (86) is formed along each of the opposing walls (78), said notch extending beyond the protrusion (82) in the insertion direction for receiving and guiding the single terminal insert (22) therein.

4. The electrical connector housing according to claim 2 or 3, wherein the protrusion (82) comprises an axially extending slot (88) through which the terminal (46) of the bus insert (44) is guided and extends towards the front.

5. Electrical connector housing according to any of the preceding claims, wherein the slot (79) has a width that substantially matches the thickness of the bus bar (48).

6. An electrical connector housing according to any preceding claim, wherein the second locking means is located in the rear of the cavity.

7. Electrical connector housing according to any of the preceding claims, wherein the second locking means comprises a notch (90) in a wall defining an abutment surface (92) substantially perpendicular to the insertion direction (C), the notch cooperating with a resilient locking tab (68) protruding from the bus board.

8. A bus bar insert, in particular for mating with an electrical connector housing (10) according to any one of the preceding claims, the bus bar insert (44) being made of electrically conductive sheet metal and comprising:

a substantially rectangular substrate (48) having opposing longitudinal edges (50, 60); and

a plurality of spaced apart parallel contact terminals (46) extending from a first longitudinal edge (50) of the bus board, each terminal including an intermediate portion (52) connected at one end to the bus board and at another end to a terminal portion (54);

wherein the intermediate portion (52) of each terminal is bent out of the plane of the bus board (48) such that the terminal portions (54) of the terminals (46) lie in a plane parallel to but spaced from the plane of the bus board.

9. The bus insert of claim 8, comprising a connector portion (62) extending from the second longitudinal edge (60) of the bus board, the connector portion (62) for securing wires thereto.

10. The bus insert according to claim 8 or 9, comprising at least one resilient tab (68) protruding outwards from the bus bar (48), the resilient tab (68) being connected at one end to the bus bar (48) and extending with its free end outwards in the direction of the second longitudinal edge (60) in a corresponding hole (70) in the bus bar in which the resilient tab (68) fits.

11. The bus insert of claim 8, 9 or 10, wherein the terminal portion of each terminal is U-shaped and includes a pair of axially extending arms (56) spaced apart by a slot, thereby forming a female connector portion.

12. A kit of parts for an electrical connector, comprising: the electrical connector housing (10) of any one of claims 1 to 7; at least one bus insert (44) according to any one of claims 8 to 11; and a plurality of single terminal inserts (22) formed as elongated conductors designed to engage in the single socket cavities of the housing.

Technical Field

The present invention relates generally to electrical connectors, and more particularly to an electrical connector housing including a socket cavity having an electrical contact insert disposed therein.

Background

In the automotive field, connector boxes (or more generally, connector housings) are provided to enable electrical connection between components and/or wires.

The electrical connector housing is made of an electrically insulating material, usually plastic, and houses in the socket cavity an electrically conductive element, called a contact insert, configured to allow electrical connection between the front and rear sides of the housing. The contact insert may have: a female connector portion for receiving a terminal; a flat connector portion securable to a PCB card; a crimp connector portion for receiving an electrical wire; or any other type of connector portion depending on the requirements of a particular application. The contact insert is introduced into the cavity of the connector housing and locked therein.

Conventional designs of connector housings include a plurality of receptacles formed by cavities in a housing body, wherein each cavity is configured to receive a contact insert therein. The receptacle is essentially a compartment having sidewalls and typically includes a plurality of locking elements integrally disposed with the sidewalls. After the contact is inserted into the receptacle, a locking member locks the contact in place, the locking member resisting removal of the contact. Additional stops may be formed at the front of each receptacle to limit movement of the contact insert.

In order to minimize the risk of pulling the contact insert out of its socket by lateral forces, the contact insert is preferably shaped and dimensioned to fit tightly into the cavity. As a result, the electrical connector housing has a socket cavity shaped to receive a predetermined type of contact insert, as is currently known in the art.

Disclosure of Invention

It is an object of the present invention to provide an improved connector housing design that allows for greater flexibility in the use of the connector housing and is therefore suitable for a variety of applications.

In a first aspect, the present invention is directed to an electrical connector housing comprising an electrically insulative housing body having a plurality of receptacle cavities therein. According to an important aspect of the invention, the present housing (and in particular the socket cavity thereof) is configured to receive therein a contact insert of a first type or a second type.

The first type of contact inserts, known as single-terminal inserts, are formed as elongated conductors designed to engage in a single receptacle. The second type of contact inserts, known as bus inserts, comprise a plurality of spaced parallel contact terminals extending from the bus board and are designed to engage the terminals in a corresponding number of receptacles aligned in rows.

The electrical connector housing includes:

a front portion for connecting a terminal of an electrical component to the contact insert disposed inside the housing;

an opposing rear portion from which the contact insert is inserted into the cavity;

at least one row of said socket cavities formed as cylindrical cavities extending in parallel fashion in said housing in an insertion direction extending from said rear portion to said front portion, adjacent cavities in said row being separated by a dividing wall;

first locking means provided in said socket cavity for locking in place a single terminal insert disposed in a given cavity;

second locking means arranged to lock in place bus inserts inserted into a corresponding number of socket cavities; and

a slot in the rear portion disposed in the partition wall and extending in the insertion direction to receive the bus bar of the bus bar insert.

The invention therefore proposes an electrical connector housing designed to be compatible with two types of contact inserts that can be introduced optionally into the same socket cavity. This allows for more uses of the electrical connector housing and reduces the variety of components in, for example, the automotive field.

Separate locking means are provided in the housing for each of the two types of tap inserts. The locking means are designed to cooperate with the contact inserts to lock them in place in the cavities. Any suitable locking means design may be used, including resilient or form-fitting.

The bus board of the bus insert needs some special design across the span of several cavities: thus, a slot is provided in the partition wall to receive the bus bar therein. The slots extend from the rear end of the partition wall through the entire thickness of the partition wall so that the bus bar can pass from one chamber to an adjacent chamber. The width of the slot preferably corresponds to the thickness of the bus bar plate. This narrow design of the slot avoids flexing of the bus bar in a direction perpendicular to the plane of the bus bar. A more secure locking/fixing of the bus insert is thus obtained.

In an embodiment, the first locking means comprises a pair of projections arranged on opposing cavity walls (preferably in facing relationship) and each defining a forwardly facing substantially transverse locking surface for abutting a resilient tab extending outwardly from the single terminal insert when the single terminal insert is locked in position in the cavity.

Advantageously, an axially extending notch is formed along each of said opposite walls, said notch exceeding said protrusion in the insertion direction for receiving and guiding said single terminal insert therein.

The first locking projection preferably includes an axially extending slot that allows the bus bar insert to pass through the projection toward the front. With these axial slots, the first locking projection also allows guiding and positioning the terminals of the bus bar insert in the rear part of the housing. Therefore, the width of the slot is preferably matched to the thickness of the terminal.

In an embodiment, the second locking means is located in the rear portion of the cavity. The second locking means may comprise a notch in the cavity wall defining an abutment surface substantially perpendicular to the insertion direction, the notch cooperating with a resilient locking tab projecting from the bus bar.

According to another aspect of the present invention, a bus bar insert is proposed, in particular for mating with the electrical connector housing disclosed herein, the bus bar insert being made of an electrically conductive sheet metal and comprising: a substantially rectangular substrate having opposing longitudinal edges; and a plurality of spaced apart parallel contact terminals extending from the first longitudinal edge of the bus bar, each terminal including an intermediate portion connected at one end to the bus bar and at another end to a terminal portion. The intermediate portion of each terminal is bent out of the plane of the bus board such that the terminal portion of the terminal lies in a plane parallel to but spaced from the plane of the bus board.

This design of the bus bar insert with bent terminals is very convenient for insertion into an electrical connector housing that is also compatible with a single terminal insert, as the bending allows for increased compactness of the assembly.

For connection purposes, a connector portion preferably extends from the second longitudinal edge of the bus board for securing wires thereto. However, this is not required and other types of interfaces may be provided to connect the bus board to wires or other electrical components.

In an embodiment, at least one elastic tab projects outwards from the bus bar, said elastic tab being connected at one end to the bus bar and extending with its free end outwards in the direction of the second longitudinal edge over a corresponding hole in the bus bar for its fitting. The resilient tab serves as a locking tab and is configured to project generally outwardly from the plane of the insert plate. Due to its elasticity, the tab may fold back in the plane of the insert plate during insertion of the bus bar into the cavity and spontaneously return to its outward position.

In an embodiment, the terminal portion of each terminal is U-shaped and includes a pair of arms extending along the terminal axis and spaced apart by a slot. Thus, the ends of the terminals form a female connector which, in use, is arranged in the front of the housing and facilitates connection to an electrical component inserted into the housing.

According to a third aspect, the invention relates to a kit of parts for an electrical connector, comprising: an electrical connector housing as disclosed herein; at least one bus bar insert as disclosed herein and a plurality of single terminal inserts formed as elongated conductors designed to engage in a single socket cavity of the housing.

Drawings

Further details and advantages of the invention will become apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings, in which:

fig. 1 is a perspective view of an embodiment of the present electrical connector housing as seen from the front;

FIG. 2 is a perspective view of the housing of FIG. 1 from the rear with the bus bar insert in the cavities of the first row;

fig. 3 is a perspective view of a single terminal insert;

FIG. 4 is a perspective view of the bus bar insert;

fig. 5 and 6 are longitudinal sectional views showing the inside of one chamber of the housing of fig. 1;

FIG. 7 is a cross-sectional view through the housing of FIG. 1 with a bus insert assembled therein;

fig. 8 is a cross-sectional view through one of the cavities of the housing of fig. 1 with a single terminal insert assembled therein; and

fig. 9 is a detailed view of fig. 7, partially showing one cavity with the terminals of the bus bar insert therein.

Detailed Description

An embodiment of the present electrical connector housing 10 is shown in fig. 1 with the front 12 on top. In this embodiment, the housing 10 has a main body 14 of substantially parallelepiped shape and comprises a plurality of socket cavities 16, these socket cavities 16 being designed to receive conductive contact inserts therein. The contact insert provides an electrical connection between the front 12 and rear 18 of the housing. In the front portion 12, the cavity 16 is open and is configured to form a contact area for a terminal of an electrical component (not shown), such as a fuse, shunt, or other component. Inserting an electrical component into both cavities 16 from the front face 20 will establish contact between the electrical component and a contact insert arranged inside the housing. At the opposite rear portion 18, the contact insert is connected to any suitable conductor or circuit or other component.

In this embodiment, the housing 10 includes eight socket cavities 16, the socket cavities 16 ending in the front 12 with holes 17, the holes 17 being configured to receive terminals of an electrical fuse. The housing body 14 is made of an electrically insulating material, typically a polymer, such as PBT GF 30.

It should be understood that the present housing 10 is designed to be compatible with two types of metal contact inserts that can be assembled within a receptacle cavity.

Before looking at the construction of the housing, these contact inserts will now be described in detail.

A first type of contact insert 22 is shown in fig. 3, which first type of contact insert 22 is referred to as a single terminal insert. The single terminal insert is formed as an elongated conductor element (extending along a longitudinal axis a) designed to engage in a single socket cavity. One end of the single-terminal insert 22 is designed as a female connector part 23 and comprises a pair of resilient arms 24 extending in a longitudinal direction from a central part of the conductor element. The two arms 24 are flat blades, which are symmetrically arranged in the longitudinal direction and are adapted to receive and clamp between them the terminals (or pins, etc.) of the electrical component. In use, these arms 24 are located in the front portion 12 of the housing 10 and thus allow connection to components inserted from the front portion via the apertures 17.

Opposite to the female connector section 23, the single-terminal insert 22 includes a crimping section 26 shown in fig. 3, and an electric wire 28 is attached to the crimping section 26. The crimp section 26 includes a fixed crimp barrel 30 formed by a U-shaped section with two arms 32 that are crimped around the insulating jacket of the wire 28 for fixedly connecting the wire to the contact insert 22. The crimp section 26 also includes a pair of conductive arms 34, the pair of conductive arms 34 pinching around the conductor of the wire 28 to allow electrical connection with the contact insert 22. In use, the crimping side 26 of the single connector is at the rear.

Between the crimp 26 and the female connector part 23, the contact insert 22 comprises a cylindrical body 36, the cylindrical body 36 having a square base which fits over the arm 24. The outer shape of the cylinder 36 corresponds to the inner shape of the cavity 16 of the connector housing 10. To facilitate assembly of the single terminal insert 22.

The resilient arms 24 are integral with the crimp 26 and extend axially out of the cylinder 36 from two opposite sides. A pair of rigid arms 38 extend in the same direction from the same opposite cylinder side to limit the divergence of the resilient arms 24.

It is also noted in fig. 3 that a pair of resilient tabs 40 project laterally outwardly from the cylindrical body 36 on the same side as the rigid arms 38. One end of the tab 40 is connected to the cylinder 36 and extends away from the cylinder in the direction of the crimp in the longitudinal direction. The tabs 40 are typically cut out of the material of the cylinder 36 so as to coincide with openings 42 in the cylinder 36, and the tabs 40 can fit within the openings 42 so that the tabs 40 are flush with the surface of the cylinder 36. As will be discussed below, these tabs 40 serve as locking elements for securing the single terminal insert within the housing. The tabs 40 flex outwardly (rest position), but due to their resiliency they can be temporarily moved into the openings 42 during assembly.

A second type of contact insert is shown in fig. 4, and is referred to as a bus insert 44 and includes a plurality of spaced apart parallel contact terminals 46 extending from a bus board 48. The bus insert 44 is designed such that the terminals 46 engage in a corresponding number of socket cavities 16 arranged in a row.

The bus insert 44 is a one-piece member made from sheet metal that is cut to provide the desired configuration. Any suitable conductive metal may be used, for example, copper alloy (C19400 or otherwise).

As depicted, the bus insert 44 has a longitudinal extension along axis B and comprises: a substantially rectangular bus bar 48, which extends transversely to axis B; and groups of four contact terminals 46 extending from the same transverse edge 50 of the bus bar 48 in the direction of axis B. The terminals 46 are equally spaced apart. Each of the terminals 46 is configured here as a female terminal, and includes a belt-shaped intermediate portion 52, one end of the intermediate portion 52 being connected to the bus board 48, and the other end being connected to a terminal (U-shaped portion 54). The U-shaped portion 54 includes two arms 56, the two arms 56 extending along the axis B and being separated by a slot 58. In use, the terminals 46 are located in the front housing part 12. Thus, the inner edge of the arm 56 has a predetermined inner profile, in particular providing a clamping effect, according to the design of the terminal of the electrical component to be inserted therein.

On the bus bar edge 60 opposite the terminal 46, a crimp 62 is provided, the crimp 62 being similar to one of the single terminal inserts 22, but shown in an open state without an electrical wire attached thereto. The crimp 62 includes a U-shaped portion having a first pair of arms 64, the first pair of arms 64 bending an insulating jacket (not shown) around the wire into a crimp barrel. It also includes a second pair of arms 66, the second pair of arms 66 being clamped, in use, around the conductor of the wire, not shown.

Advantageously, to increase the compactness of the assembly, the terminals 46 of the bus bar insert 44 are bent. That is, the intermediate portion 52 of the terminal 46 includes two bends such that the U-shaped portion 54 lies in a plane that is different from, but substantially parallel to, the plane of the bus bar 48.

It may be noted that the bus board 48 also includes two resilient tabs 68, as will be discussed below, the resilient tabs 68 acting as locking members. One end of the tab 68 is connected to the bus board 48 and extends away from the board in the direction of the crimp 62 (or opposite the terminal 46) in the longitudinal direction B. The tabs 48 are typically cut out of the material of the plate 48 so as to coincide with openings 70 in the plate 48, and the tabs 68 can fit within the openings 70 during assembly so that the tabs 48 can be flush with the surface of the bus plate 48.

Note also that the terminal 46 and the crimp 62 extend on the same side of the bus board 48 as the side from which the tab 68 projects.

Turning now to fig. 2, which shows the rear portion 18 of the housing 10, the rear portion 18 has an end face 70, from which end face 70 the contact inserts 22, 44 are introduced into the socket cavity 16. It will be appreciated that eight socket cavities 16 are arranged in two rows (four in each row). As can be seen, the four cavities 16 in the upper row receive the bus bar insert 44 of fig. 4. However, the four cavities 16 are also configured to alternatively receive therein the four single terminal inserts 22 of fig. 3.

The socket cavity 16 is formed as a cylindrical cavity extending in parallel fashion in the housing 10 along an insertion direction extending from the rear portion 18 to the front portion 12, which insertion direction is generally indicated by axis C in fig. 2.

The contact inserts 22, 44 are designed to be easily inserted into the corresponding socket cavities 16 and locked therein.

Thus, each socket cavity 16 includes a first locking means for locking the single terminal insert in place and a second locking means for locking the bus insert in place.

To accommodate both types of inserts, the function of the cavities in the first row is the same. Thus, from a design point of view, each cavity is considered to be a tubular chamber unit having four walls and defining an internal socket cavity.

Referring to fig. 2, each chamber includes parallel upper and lower walls 74, 76 joined by a side wall 78. These four walls extend along the insertion axis C and define an internal receptacle volume of the cavity 16 in which the contact insert is to be assembled and locked in position.

The side wall 78 separating two adjacent chambers 16 is also referred to as a dividing wall.

Figure 7 is a longitudinal section through a plane (the section plane indicated by the line D in figure 2) in the middle of the first row of chambers. It will be appreciated that the four cavities 16 are open at both axial ends, with the front side 20 on the front portion 12, the front side 20 having the contact holes 17. At the rear portion 18, it will be noted that the cavity 16 does not extend along the entire length of the housing, but rather has an inlet chamber 80 for receiving the crimp 62 of the bussing insert 44. However, each cavity 16 is designed to extend a length on the rear side sufficient to receive a majority of the bus board 48. This can be seen in fig. 7, where the dividing wall 78 extends from the front side 20 over the length of the terminal 46 and is continuous over the width W of the bus bar 48. In this embodiment, one partition wall 78 (on the left) extends all the way to the rear side 72 of the housing 10.

As can be seen, when the bus insert 44 is correctly assembled in the housing 10, the bus insert 44 maintains its bus board 48 in the rear of the cavity 16, while the terminals 46 are each engaged in the front region of the respective cavity 16.

It is to be noted that, in order to accommodate the bus bar 48 in the rear of the cavity 16, each partition wall 78 is provided with a slot 79, which slot 79 extends from the rear end of the partition wall 78 and has a length corresponding to the width W of the bus bar. Further, in order to reduce the deflection of the bus bar 48, the width (in the direction from the top wall to the bottom wall) of the slot 79 corresponds to the thickness of the bus bar 48.

Reference numeral 82 in fig. 7 may be noted, which identifies a first locking feature disposed on the dividing wall 78 in the cavity 16 to mate with the single terminal insert 22 inserted into the cavity 16.

Fig. 5 and 6 show the internal design of the cavity 16. Bottom wall 76, upper wall 74 and partition wall 78 will be seen. The locking feature 82 is designed as a nose on the dividing wall 78. As is apparent from fig. 6, in the cavity 16, the two locking projections 82 face each other and form a narrow portion in the cavity. From the locking feature 82 up to the front 20 side, a flat protrusion 84 is provided on each side of the locking feature 82 to define a centering notch 86 for the single terminal insert 22.

The locking projection 82 defines in the insertion direction C an inclined surface 82.1, which inclined surface 82.1 leads to a flat portion 82.2, with the flat portion 82.2 being flush with the flat projection, and the locking projection 82 comprises a flat locking surface 82.3 extending substantially perpendicular to the insertion direction C. The channels provided between the protrusions 82 substantially correspond to the width of the cylindrical body 36 of the single terminal insert 22, which cylindrical body 36 can thus be pushed over the locking protrusions in the front part.

Reference numeral 88 designates an axial slot centrally disposed in the locking projection 82 which allows the terminal 46 of the bus insert 44 to pass through and into the front portion 12. In addition, the slot 88 allows the bus terminal 46 to be maintained and centered in the cavity. The width of the slot 88 substantially corresponds to the thickness of the terminal 46.

The ability of the present design to accommodate both a single terminal insert 22 and a bus insert 44 is further illustrated in fig. 8 and 9. Note that fig. 8 only shows the cavity portion of the housing that extends over the length Lc of the housing, rather than over the full length Lf. While the locking feature 82 is designed as a protrusion that can mate with the single terminal insert 22 to block it in place, the slot 88 allows the terminals 46 of the bus insert 44 to be inserted. The curved intermediate portion 52 is located between the bus bar 48 and the locking protrusion 82. From an assembly perspective, the bus insert 44 is introduced into the chamber 80 such that the terminals 46 are aligned with the cavities and the bus bar board 48 can engage into the slots of the dividing wall 78. As shown in fig. 7, the bus insert 44 is simply pushed axially (in the direction of axis X) until the terminals 46 and the bus board 48 engage in the cavities 16. In this assembled position, the locking tabs 68 project outwardly and face the locking features in the housing. The locking feature takes the form of a recessed area 90 having a transverse locking surface 92. In the assembled position of fig. 7, the free ends of the locking tabs 68 respectively coincide with this notch 90 in the bottom wall and therefore face the locking surface 92, preventing the bus bar insert from being withdrawn from the interior of the housing.

When the bus insert 44 is introduced into the cavity 16, the bus bar plate 48 contacts the bottom wall 76. The resilient locking tab 68 is forced into the opening 70. When the bus insert 44 reaches the position of fig. 7, the resilient locking tab 68 is released and deployed within the notch 90, facing the locking surface 92.

With regard to the assembly of the single terminal inserts 22, they are similarly introduced through the chambers 80, but are pushed individually into the respective cavities 16. As mentioned above, the cylindrical body 36 has an outer shape of the cavity cross-section at the level of the mating locking protrusion 82. The design of the bore 17 in the front side 20 here comprises wedge-shaped guide walls 17.1, the wedge-shaped guide walls 17.1 contributing to the introduction of the fuse terminal into the cavity 16. These guide walls further limit the travel of the single terminal insert 22 in the front region of the cavity. During assembly, the female connector part 23 first passes the locking protrusion 82, and then the cylinder 36 passes the locking protrusion 82, which means that the locking tabs 40 are forced into the openings 42 and re-spread outwards after passing the locking protrusion 82. This is the assembled configuration of figure 8, in which the free ends of the tabs 40 face the respective locking surfaces 82.3. Thus preventing removal of the single terminal insert.

The locking tabs 40 and 68 provide a stable locking of the respective insert in the housing. Preliminary tests have shown that such a locking tab can withstand a minimum of 120N pull in any direction.