CN112003058B

CN112003058B - Housing of an electrical plug connector or for receiving an electrical plug connector

Info

Publication number: CN112003058B
Application number: CN202010692487.XA
Authority: CN
Inventors: 托马斯·维特
Original assignee: Wago Verwaltungs GmbH
Current assignee: Wago Verwaltungs GmbH
Priority date: 2016-01-29
Filing date: 2017-01-25
Publication date: 2022-05-10
Anticipated expiration: 2037-01-25
Also published as: CN112003058A; EP3200288A1; CN107026347B; DE102016101621A1; DE102016101621B4; CN107026347A; EP3200288B1

Abstract

The invention relates to a housing of an electrical plug connector, i.e. a plug connector housing, or a housing for accommodating an electrical plug connector, such as a strain relief housing, i.e. a housing with strain relief means for a connected cable. The housing has at least one first housing part and one second housing part as separate components, which can be connected to one another via a connecting mechanism and which in the connected state completely or partially enclose an interior space of the housing, wherein a line channel for at least one electrical line is formed in the interior space. An elastically deflectable lug is provided on the first housing part, which lug in turn blocks the line channel completely or at least partially in the direction of the second housing part.

Description

Housing of an electrical plug connector or for receiving an electrical plug connector

The present application is a divisional application of the application entitled "housing of an electrical plug connector or for accommodating an electrical plug connector" filed as 25.1.2017, national application No. 201710060986.5.

Technical Field

The invention relates to a housing of an electrical plug connector, namely a plug connector housing, or a housing for receiving an electrical plug connector, namely for example a strain relief housing, namely a housing with a strain relief device (Zugentlasteinrichtung) for a connected cable. The housing has at least one first housing part and one second housing part as separate components, which can be connected to one another via a connecting mechanism and which in the connected state completely or partially enclose an interior space of the housing, wherein a line channel for at least one electrical line is formed in the interior space.

Background

Such a housing is known, for example, as a stress relief housing from DE 202013101929U 1. The housing is not provided for avoiding accidents due to contact with an electrical potential, because of its open design, in a manner that places increased demands on contact protection.

Disclosure of Invention

The invention is therefore based on the object of designing a housing of the type mentioned at the outset more safely with little effort in terms of contact protection.

The object is achieved by a housing of an electrical plug connector or for receiving an electrical plug connector, wherein the housing has at least one first housing part and one second housing part as separate components, which can be connected to one another via a connecting member and which in the connected state completely or partially encloses an interior space of the housing, wherein a conductor channel for at least one electrical conductor is formed in the interior space, wherein an elastically deflectable tab is provided on the first housing part, which tab in turn completely or at least partially blocks the conductor channel in the direction of the second housing part. By means of this supplementation of the elastically deflectable tabs, the contact-protection safety of the housing and thus of the electrical plug connector formed therewith can be significantly increased. With extremely low production outlay for producing the webs, protection classes IP40 and IP2XD can be achieved.

The conductor channel is therefore completely or partially blocked by the elastically deflectable tab in the sense that the conductor channel is closed, but nevertheless the electrical conductor can be guided through the conductor channel due to the elastic deflectable property of the tab. The elastically deflectable tabs are thus curved or elastic, so that the electrical line can be arranged in the line channel, but the line channel is also substantially closed off by the tabs.

The electrical line can be a single conductor, in particular a conductor with insulation, or a line with a plurality of single conductors, for example in the case of a multi-core cable.

The conductor channel can in particular be a hollow or channel-shaped channel, so that a channel cavity is formed for accommodating the electrical conductor. The housing has, in particular, a wire feed-through opening. The electrical line can thus extend from the outside through the line feed opening into the interior space or line channel.

The elastically deflectable webs have a resilient property due to their elasticity, i.e. they form a counter force against the force causing the deflection when elastically deflected from the shape caused by their manufacture.

According to an advantageous development of the invention, it is provided that the tab can be elastically deflected by an electrical line arranged in the housing interior, so that the electrical line can be arranged in the line channel, but the line channel is also substantially closed off by the tab. This has the advantage that the tab also fulfills its safety function even when electrical lines are introduced and provides the desired contact protection. By means of the electrical line arranged in the housing interior, i.e. in the line channel, the tab is elastically deflected and thus pressed with the desired elasticity onto the electrical line. The tab is thus deformed by the connected electrical line, but rests against the electrical line and additionally at least blocks the line channel, so that the test core rod cannot enter.

According to an advantageous further development of the invention, it is provided that the web is fastened in one piece to the first housing part. The one-piece fastening can be achieved, for example, by the tabs being fastened to the insulating material of the first housing part by injection. The tab can thus be produced together with the first housing part in a single production process, in a plastic injection molding process. Thereby, a cost-effective and economical production of the housing according to the invention is ensured. Furthermore, the webs do not have to be fixed manually or mechanically as separate components, which again saves manufacturing steps. The one-piece fastening of the web to the housing part has the further advantage that the web is firmly fastened to the first housing part and can also withstand greater loads.

According to an advantageous further development of the invention, it is provided that the housing has a strain relief device which is formed with a locking clip, by means of which strain relief device at least one electrical line which is arranged in the interior space can be relieved. This has the advantage that the electrical lines are protected from external loads at least in the region thereof which is arranged in the housing, and the connection of the electrical lines to the plug connector contacts is protected from external forces.

According to an advantageous development of the invention, it is provided that the locking clip is accessible from the outside of the housing in order to move the locking clip into a locking position in which it stresses the electrical line. This has the advantage that the locking clip can be flexibly adapted to the respective outer dimensions of the electrical line or to the insulation surrounding it. The mating can be carried out in a simple manner manually by pressure-applying the locking clip, which takes place at the time at which the electrical line is already arranged in the housing and is electrically contacted therein.

According to an advantageous further development of the invention, it is provided that the strain relief means is arranged in front of the tab, viewed from the conductor lead-through opening. This has the advantage that the webs are additionally protected by the strain relief means and the strain relief means furthermore improve the contact protection of the housing.

According to an advantageous development of the invention, it is provided that the webs are designed as pre-bent, bent webs. This simplifies the mounting of the first and second housing parts to one another, in particular in the case of electrical lines already being incorporated therein. The pre-bent, bent tab can easily be elastic and bent by the electrical conductor (nachgeben). This has the advantage that the tab can displace the electrical conductor arranged in the conductor channel in a defined manner.

According to an advantageous development of the invention, it is proposed that the tabs are pre-bent in the direction of the plug contact region of the electrical plug connector or in the direction of the conductor lead-through opening. As plug contact regions of the electrical plug connector, in particular, regions can be seen in which electrical plug contacts are arranged. The region of the housing in which the line lead-through opening is present and in which a strain relief is optionally provided is also referred to as a terminal region. By means of the inventive tab, in particular, IP2XD licenses can be obtained in the connection region and IP40 licenses can be obtained in the contact region.

According to an advantageous development of the invention, it is provided that the cross-sectional area and/or the material thickness of the web decreases in the direction of the free end of the web. This has the advantage that the elasticity of the web can likewise be changed, i.e. increased, towards the free end, so that the web is more rigid in the transition region to the first housing part and can thus be deformed less easily than at the free end. Accordingly, the tab can be slightly bent relative to the electrical line, but is not displaced under the test conditions by the test mandrel introduced in the direction of extension of the line.

According to an advantageous further development of the invention, it is provided that the line duct is delimited by surface sections of the housing material which are arranged in the second housing part in the region of the webs in each case laterally to the webs. This has the advantage that, on both sides of the web, the test core rod can be prevented from intruding by means of the surface sections of the housing material in a cost-effective manner.

According to an advantageous further development of the invention, it is provided that the tab has a rectangular outer contour in a viewing direction along the longitudinal direction of the electrical line. This has the advantage that the amount of play of the play present laterally of the web does not increase even when the web is deformed. In this way, regardless of the thickness of the electrical line introduced, contact safety is maintained and protection against the penetration of the test mandrel is provided.

Drawings

The invention is explained in detail below on the basis of embodiments with the aid of the figures.

The figures show:

figure 1 shows a perspective view of a housing with an electrical plug connector, and

FIG. 2 shows a view of the device of FIG. 1 in longitudinal section in plane A-A, and

FIG. 3 shows a partially enlarged view of region B in FIG. 2, and

FIG. 4 shows a lateral cross-section of the housing and the first electrical conductor, and

FIG. 5 shows a lateral cross-section of the housing and of the second electrical conductor, and

FIG. 6 shows a section in the plane C-C according to FIG. 4, and

fig. 7 shows a section according to fig. 4 in the plane D-D.

In the drawings, the same reference numerals are used for elements corresponding to each other.

Detailed Description

Fig. 1 shows a housing 1 having a first housing part 2 and a second housing part 3 as separate components. The first housing part 2 is an upper housing part which rests on a second housing part 3 designed as a lower housing part in order to form the housing 1. The

housing parts

1, 2 are connectable to each other via connection means 20, 30. The connecting means 20, 30 are designed here as a latching connection, for example with a latching hook 30 molded onto the second housing part 3 and a latching opening 20 on the first housing part 2, which latching hook engages with it. Alternatively, the

housing parts

1, 2 can also be connected to one another by other types of connection means, for example by screwing means.

The housing 1 has a front plug connector receiving area 10 and a rear cable receiving area 11 arranged on the other end. Fig. 1 shows that an electrical plug connector 4 is connected to a housing 1 in such a way that: a specific region of the plug connector 4 is arranged within the plug connector receiving region 10 and is fixed therein.

Alternatively, the housing 1 is also formed in one piece with the plug connector 4, so that it is the housing of the electrical plug connector. In the exemplary embodiments described below, the housing for receiving the electrical plug connector is used as a starting point.

The housing 1 has a strain relief device in the cable receiving region 11, which has a locking clip 31, by means of which a cable or an electrical line arranged in the interior of the housing 1 can be relieved of strain. The locking clip 31 is shown in fig. 1 and in the other fig. 2 and 3 in two operating positions, into which it can be moved, but in practice there is only one locking clip 31.

Figure 2 shows a sectional view of the housing 1 with the electrical plug connector 4 according to figure 1 along the section a-a, as depicted in figure 1.

It can be seen that the electrical plug connector 4 has a plug contact region 41 in which an electrical plug contact of the plug connector is arranged for contacting a mating plug connector. The plug contact region 41 projects from the housing 1. The fastening region 40 of the electrical plug connector 4 is arranged in the plug connector receiving region 10 of the housing 1 and is held therein in a form-fitting manner by the

housing parts

2, 3.

Visible in the rear cable receiving region 11 is a strain relief device having a locking bracket 31 (again shown twice) and a corresponding clamping means 32 on the second housing part 3 and a further clamping means 33 on the locking bracket 31. By means of the

clamping devices

32, 33, the electrical cable is clamped between the locking clips 31 when they are actuated, and is accordingly protected against the occurring stress loads.

The housing 1 has a conductor lead-through opening 13, through which an electrical conductor or cable can be led into the housing 1. Viewed from the conductor insertion opening 13, an elastically deflectable tab 5 is provided behind the strain relief means, said tab being fastened to the first housing part 2 and extending in the direction of the second housing part 3. The webs 5 are elastically deflectable by means of electrical lines arranged in the interior 12 of the housing, as is shown in fig. 2 by the webs 5 being shown twice, to be precise in two different deflection positions. When no electrical conductor is introduced, the lower position is occupied, and when an electrical conductor with a specific cross section is introduced, the upper position is occupied.

Fig. 3 shows an enlarged view of the detail B marked in fig. 2, so that the details of the strain relief and of the elastically deflectable webs 5 can be seen more clearly. It is particularly visible that the web 5 has a root region 52 in which it can be integrally molded on the first housing part 2. The web 5 extends from the root region 52 via a region 51 which has been pre-bent during production, towards the free end 50 of the web 5. Preferably, the thickness of the tab 5 decreases from the root region 52 towards the free end 50 of the tab 5.

Fig. 4 shows a lateral cross-sectional view of the housing 1 and the plug connector 4 together with a cable 6 introduced into the housing 1, which has a first cable section. The electrical line 60 emerges from the cable 6 in the direction of the plug connector 4 and is electrically connected there to the plug contact of the plug connector 4. It is particularly apparent that the web 5 is offset upward and accordingly does not remain in its lower position shown in fig. 2 and 3, but rather assumes the upper position shown. The free end 50 of the tab 5 rests against the electrical line 60.

The locking clip 31 of the strain relief is moved downwards from the upper initial position visible in fig. 2 and 3, so that the cable 6 is fixedly clamped between the clamping means 32 on the second housing part 3 and the further clamping means 33 on the locking clip 31.

Fig. 5 shows a view similar to fig. 4 of an arrangement of a cable 6 in the housing 1, said cable having a second cross section which is larger than the first cross section of the cable 6 of fig. 4. It can be seen that the locking clip 31 is not or only minimally moved downwards in order to clamp the cable 6 by means of the clamping

mechanisms

32, 33.

The conductor 60 in turn comes out of the cable 6. In order to illustrate the function of the web 5, it is shown twice again, namely once in the upper position, as in fig. 4, and furthermore in the lower position, when no cables 6 or wires 60 are introduced, it assumes the lower position.

Fig. 6 shows the device according to fig. 4 in a cross section in the plane C-C as depicted in fig. 4. The working principle of the stress relief means can be further elucidated with reference to fig. 6. It can be seen that the locking clip 31 is arranged on the pin 26 which is fixed on the second housing part 3 and has the outwardly pointing toothing 25. The locking clip 31 has corresponding, inwardly directed teeth 35, which teeth 35 engage with the teeth 25. Via the

toothing

25, 35, the locking clip 31 can be moved downward from an upper initial position, wherein the locking clip 31 is fixed with respect to the upward movement after each passage over the teeth of the

toothing

25, 35.

The locking clip 31 can be manually actuated from the outside via a recess provided in the first housing part 2. The locking clip has a fastening region 34 which has a slot-shaped recess into which, for example, a screwdriver for actuating the locking clip 31 can be introduced.

Fig. 7 shows the device according to fig. 4 in a sectional plane D-D. The locking between the

housing parts

2, 3 via the locking hook 30 and the locking opening 20 can again be seen. The tab 5 can also be seen, which rests with its free end 52 on the electrical line 60.

As can also be seen in fig. 6 and 7, the tab 5 has a substantially rectangular outer contour in the viewing direction in the longitudinal direction of the electrical line 60. Laterally to the webs 5, the conductor paths are delimited by the surface sections 27 of the housing material, in this case the first housing part 2, which are arranged there. In this way, it is prevented that the test rod can be guided past the web 5 laterally.

As illustrated, the tab 5 is offset upwards by the incoming electrical line 60. A certain free space thus arises laterally to the electrical lines in the lower region, i.e. below the tab 5. In order to ensure that the free space prevents the introduction of the test core rod as far as possible, a wall 36 rounded off in the lower region toward the interior 12 is additionally present on the second housing part 3, said wall being arranged between the web 5 and the strain relief device with the locking clip 31. The wall 36, due to its contour, allows the electrical line 60 to be passed through toward the plug connector 4, but prevents the test plug from being guided past the electrical line 60 laterally in the lower region.

Claims

1. A housing (1) suitable for an electrical plug connector (4), wherein the housing (1) has at least one first housing part (2) and one second housing part (3) as separate components, which can be connected to one another via a connecting means (20, 30) and which in the connected state completely or partially encloses an interior space (12) of the housing (1), wherein a conductor path for accommodating at least one electrical conductor is formed in the interior space (12),

it is characterized in that the preparation method is characterized in that,

an elastically deflectable lug (5) is arranged on the first housing part (2), which lug completely or at least partially blocks the line channel in the direction of the second housing part (3), and a free end (50) of the lug (5) can be placed against an electrical line located in the housing, wherein the housing (1) has a strain relief means by means of which at least one electrical line arranged in the interior (12) can be relieved of strain, wherein the strain relief means is arranged upstream of the lug (5) when viewed from a line introduction opening (13) of the housing (1).

2. The housing according to the preceding claim,

it is characterized in that the preparation method is characterized in that,

the connecting piece (5) can be elastically deflected by an electrical line arranged in the interior (12) of the housing (1) such that the electrical line can be arranged in the line channel, but the line channel is also substantially closed off by the connecting piece (5).

3. Housing according to one of the preceding claims,

it is characterized in that the preparation method is characterized in that,

the connecting piece (5) is fixed to the first housing part (2) in one piece.

4. Housing according to one of the preceding claims,

it is characterized in that the preparation method is characterized in that,

the strain relief means comprises a locking clip (31).

5. The housing according to claim 4, wherein the housing is a hollow housing,

it is characterized in that the preparation method is characterized in that,

the locking clamp (31) is accessible from the outside of the housing (1) in order to move the locking clamp (31) into a locking position in which the electrical line is relieved of stress.

6. Housing according to one of the preceding claims,

it is characterized in that the preparation method is characterized in that,

the webs (5) are designed as pre-bent, bent webs.

7. The housing according to the preceding claim,

it is characterized in that the preparation method is characterized in that,

the webs (5) are pre-bent in the direction of the plug contact regions (41) of the electrical plug connector (4) or in the direction of the conductor insertion openings (13).

8. Housing according to one of the preceding claims,

it is characterized in that the preparation method is characterized in that,

the cross-sectional area and/or the material thickness of the web (5) decreases in the direction of the free end (52) of the web (5).

9. Housing according to one of the preceding claims,

it is characterized in that the preparation method is characterized in that,

the conductor path is delimited by surface sections (27) of the housing material, which are arranged in the second housing part (3) in each case laterally to the webs (5) in the region of the webs (5).

10. Housing according to one of the preceding claims,

it is characterized in that the preparation method is characterized in that,

the tab (5) has a rectangular outer contour in a direction of view in the longitudinal direction of the electrical line.

11. Housing according to one of the preceding claims,

it is characterized in that the preparation method is characterized in that,

the elastically deflectable tab (5) has an arcuate cross section.