CN1728469A - Heavy Duty Electrical Plug Connectors with Locking Clips - Google Patents

Abstract

An electrical plug connector with a first sub-housing (1) and a second sub-housing (3), at least one or two locking units (2), it has two double-armed locks Clamp (5), one of the arms (11) is rotatably hinged on a sub-housing (1) and has a latching groove (14), which is designed to overlap the second latch in the closed position. Another mortise shaft (15) on the two sub-housings (3); also has a handle (6), which connects the two locking clips (5) on the opposite sides of the sub-housings (1, 3) to each other, And can make these two locking clamps (5) turn into a locking position from a disengagement position with handle, or reverse, wherein no matter be locking clamp (5,5 ') or handle (6) all make metallic parts.

Description

Heavy Duty Electrical Plug Connectors with Locking Clips

technical field

The invention relates to an electrical plug-in connector according to the preamble of claim 1 .

Background technique

Various plug connectors of this type are known. For example, in DE 102 09 686 A1, a kind of electric plug-in connector is shown and introduced, wherein a metal locking clip is arranged in each arm of the U-shaped handle, and each arm has a correspondingly shaped seat. The locking clip is therefore an integral part of the handle, and the pressing force for pressing the upper and lower housings against each other is generated by the elastic force of the rubber seals arranged between the housing parts, the locking clip relative to the They form a bearing seat.

Furthermore, an electrical plug connector of this type is known from EP 0 731 534 A2. Here, in order to accommodate the locking clips, recesses are provided in the mutually facing arm pits of the plastic U-shaped handle. The bars are movable relative to each other. The arms of the U-shaped handle are designed in such a way that they completely cover at least one arm of the corresponding locking clip and are jointly rotatably mounted on a bearing journal of the lower housing.

However, the manufacture and assembly of such plug-in connectors is relatively complex, especially if, in addition to the first arm of the locking clip, the second arm of the locking clip is also fastened to the corresponding arm of the handle. Furthermore, the handle must be shaped according to the locking clip to be inserted, so that it cannot be practically used for other shapes, especially clips of other sizes.

Contents of the invention

It is firstly the object of the invention to create a plug-in connector with a particularly robust handle that can be produced economically with a simple construction.

This object is achieved by the object of claim 1 . Advantageous refinements are contained in the subclaims.

Such a robust and inexpensive, reliable heavy-duty plug-in connector is realized with particularly few and easily assembled components.

In addition, a solution should be provided in which a spring force exceeding the elastic force of the rubber seal is used to ensure reliable clamping, where the spring is designed in such a way that on the one hand it is easy to operate and on the other hand it can be easily released without generating an error function.

This object is achieved by an electrical plug-in connector having the features of claims 1 and 9 and the following claims, wherein it can also be designed to facilitate assembly in the manner of claims 2 to 7 .

Advantageous developments of the invention are given in the dependent claims.

Description of drawings

Exemplary embodiments of the invention are described below with the aid of the drawings. The accompanying drawings indicate:

Figure 1a, perspective view of two plug connectors in b;

Fig. 2 a-c is used for according to the different perspective views and enlarged view of the element of the handle of the plug connector of Fig. 1 a type;

Fig. 3 is a cross-sectional view of the connection between the handle part and the locking clip of the type shown in Fig. 2 or 5;

Figure 4 shows the handle of a handle in disassembled view together with two different locking clips;

Fig. 5 a-c is used for according to the different perspective views and enlarged view of the element of the handle of the plug connector of Fig. 1 b type;

Figure 6a, b Figure 5's corresponding side views of the locking clip in the open state (6a) of the plug connector in different use positions and a side view of the action to prevent excessive extension during opening;

Another scheme in which the locking clip in Fig. 7 and Fig. 5 is installed on the plug connector;

Figures 8 and 9 are perspective views of two other plug connectors;

Figure 10a-c is used for different perspective views and enlarged views of the elements of the handle of the plug connector of Figure 9 type;

11-13 are used for different perspective views and enlarged views of elements of the handle of the plug connector of FIG. 9;

14-15 are different perspective views and enlarged views of the locking clip for a plug-in connector of the type shown in FIG. 8 .

Detailed ways

In FIGS. 1 a and b and 2, so-called heavy-duty electrical plug connectors are shown, which have a first partial housing, here the lower housing 1 and a detachable with it by means of one or two locking units 2 The second sub-housing connected to ground is an upper case 3 here.

The concept of "upper case and lower case" is relative to the views of, for example, FIG. 1 , and should be understood without limitation. The arrangement of the two plug connectors and their partial housings in use can be of any type.

Plug pins and/or sleeves, plug-in modules, etc. can be used in the sub-housing to realize the electrical connection between the conductors. The upper housing 1 and the lower housing 3 have, for example, side insulating bushings for at least one usually multi-core cable (not visible or shown here).

For positionally fixed fixing of the plug-in connector, the lower housing 1 here has, for example, a mounting section 4 equipped with fixing holes.

Each locking unit 2-see Figure 2-has a U-shape with at least two or more double-armed metal locking clips 5 on the back-to-back outer sides of the dispenser, which are preferably made identical, respectively, And (in some cases) as longitudinal arms, they are each connected to each other by means of handles 6 as U-shaped bottom edges.

The handle 6 is economically designed as a hollow profile closed all around and cut off from a longer metal profile, for example triangular in cross-section or otherwise shaped. It can therefore be manufactured particularly economically and has a high strength with compact dimensions, so that even in the event of a fire the locking between the two plug connector parts remains longer than with plastic handles time period.

Not far from the two axial ends of the handle 6, grooves 7 are machined on the handle, into which the end regions 8 of the two locking clips 5 can be inserted. The contoured shape and the two steps 18 , which engage laterally in the form of a shoulder on the wall of the groove, prevent them from rotating relative to the longitudinal axis of the handle 6 when they are inserted into the groove 7 .

A plug-in cover 19 , preferably made of plastic, which is designed as a stepped snap or snap lock, closes the handle 6 and the axial end of the opening. Formed on the plug-in cover 19 is a pin-shaped section 20 (Fig. Also snap-in or snap-in, see FIG. 3 ), so that the locking clip 5 cannot fall out of the groove 7 of the handle 6 and is fixed immovably relative to the handle 6 on it. In addition to its outer cover section 21, the plug cover 19 also has a region 22 protruding into the cavity of the handle 6, on which the pin section 20 is formed, wherein the region 22 extends as far as the end region 8 of the locking clip , and firmly attached to it.

This results in a stable handle 6 with locking clips with little component and assembly effort, regardless of whether the locking clips 5 are made rigid ( FIG. 1 a ) or elastic ( FIG. 1 b ).

Each locking clip 5 has two arms 11, 12 again in its area facing away from the handle, which are connected to each other, for example Ω, in a U-shape, wherein one of the two arms 11 of the locking clip 5 is connected by two plugs. A (hinged) tenon 13 on one of the connector parts passes through.

On the other hand, each other arm 12 has a detent recess 14 into which a mating or further pin 15 of the other plug-in connector part 3 engages in a detented manner in the closed position in the locked position. When the plug-in connector parts are connected, a seal 24 is pressed between the two plug-in connector parts by actuating the handle 6 until the locking groove 14 engages the tenon shaft 15 . A closing force is then generated between the two plug connector parts by the elasticity of the seal. Under the situation of depressing the handle 6, the force of the sealing element is overcome to release the latch, and the locking is opened.

Figure 5 and subsequent figures also show a similar structure. Here, however, the individual locking clips 5' are made elastic.

As can first be seen in FIGS. 4 and 5 , the mounting of the locking clip 5 ′ on the handle 6 according to FIGS. 4 and 5 corresponds to that of FIG. 2 . This can be seen additionally in this way in FIG. 4 , and in this figure the locking clip 5 ′ is additionally drawn together so that a comparison can be made between the locking clips 5 and 5 ′, both of which are economically It is punched in one piece from a single sheet metal.

That is to say, the second type of locking clip 5 ′ also has end sections 8 which engage in grooves 7 of the handle 6 and are fixed there with a plug-in cover 19 in the manner shown in FIG. 3 .

But the locking clip 5' has two arms 11', 12' which are thinner than in FIG. 15, and first slightly expand when this connection is disengaged, until the snap-lock connection is established or disengaged.

One of the arms 11 ′ is likewise articulated by means of a hole 23 on the articulated pin 13 of a plug connector part 2 . The other arm correspondingly has a detent groove 14 which, in the closed state, detentably engages a further tenon 15 of the other plug-in connector part 3 , whereas here the elastically tensioned arms 11 ′, 12 ′ The elastic force increases the closing force. Because the two arms 12' each have a hole 23 and a locking groove 14, the locking clip can be hinged on the hole of each arm 11' or 12', where the corresponding arm 12' or 11' is connected to the plug connector. It is used for locking when closed (FIG. 7; here the mounting of the locking clip 5' takes place on the upper housing).

Similarly, when opening, the spring is first opened slightly by actuating the handle 6, and then the snap connection is released. Strong levered metal handle 6 makes disengagement easier.

On the two free end areas of the arms 11' and 12' of the spring-loaded locking clip 5' of FIGS. They are barbed against each other with a certain gap, the size of which is selected in such a way that although the spring can be disengaged from its latching position, it cannot be overstretched. Effective protection against overstretching of the spring-shaped locking clip 5 ′ is thereby achieved in the simplest manner.

According to FIGS. 8 and 9 the handle 6 is also economically formed as a hollow profile closed all around and is cut off from a longer metal profile, for example triangular in cross-section or otherwise shaped.

The structure of the plug connector of FIG. 8 corresponds exactly to the structure of the plug connector of FIG. 1a, and the structure of the plug connector of FIG. 9 corresponds completely to the structure of the plug connector of FIG. 1b.

The difference between the structure of FIGS. 8 and 9 and the structure of FIG. 1 is that the end section 8 embedded in the groove 7 of the handle 6 and fixed there with the plug cover 19 has a groove 28 ( FIGS. 10 , 11 , 12 ) or Undercut grooves, ribs 29 ( FIG. 12 ) are embedded in them, ribs are for example formed by bending handles or profile 6 in the region of groove 7 , and they additionally fix profile 6 on the clip, for example by press fit, which additionally Make the locking unit 2 itself more firm.

On the two free end regions of the arms 11 ′ and 12 ′ of the spring-shaped locking clip 5 ′ of FIG. 8 , likewise—see FIGS. Segments 16, 17, which are mutually barbed. But here between the two hook-shaped sections 16, 17, an additional installation-here S-shaped and for example a spacer 25 made of plastics, which preferably has fixed latching protrusions 26 on its end, these latches The locking projections fit into grooves 27 on the arms 11', 12'.

It is thus also the simplest method to achieve a better protection against overstretching of the spring-shaped locking clip 5 ′, the spacer 25 having a stabilizing effect.

List of reference signs

1 Lower shell 16, 17 Hook section

2 locking unit 18 steps

3 Upper housing 19 Plug cover

4 Installation section 20 Pin section

5. 5′ lock clip 21 cover-shaped section

6 Handle 22 Area

7 Slots 23 Holes

8 Plug cover 24 Seal

9 Pin-shaped section 25 Pad

10 articulated mortise shaft 26 locking protrusion

11, 12 arm 27 groove

13 hinged tenon shaft 28 groove

14 Lock slot 29 Rib

15 tenon shaft

Claims (15)

1. an electrical plug connector has

A. one first housing parts (1) and one second housing parts (3),

B. at least one or two locking units (4), it has two both arms shape locking folders (5) respectively, wherein one arm (11) is hinged on one of them housing parts (1) respectively pivotally and has a latch groove (14), this latch groove designs to such an extent that be used for another tenon axle (15) on make position kayser ground overlap joint second housing parts (3)

C. leader (6), it make respectively two housing (2,3) relatively the lockings folders (5) on the both sides interconnect, and can make these two locking folders (5) change a locked position over to, or turn around with this handle from a disengaged position;

It is characterized by:

D. no matter be that locking folder (5,5 ') or handle (6) are all made metalwork.

2. by the electrical plug connector of claim 1, it is characterized by: handle (6) is made by hollow profile, and locking folder (5,5 ') is made stamping parts by sheet metal.

3. by the electrical plug connector of claim 2, it is characterized by: the hollow profile of sealing around handle (6) is made.

4. by the electrical plug connector of claim 2 or 3, it is characterized by: handle (6) downcuts from long shape.

5. by each electrical plug connector of aforesaid right requirement, it is characterized by: handle (6) has groove (7) before two axial end, the stub areas (8) of two locking folders (5) are inserted in these grooves, and this stub area preferably has the moulding of match profiles in the cross section with the handle (6) of hollow profile.

6. by each electrical plug connector of aforesaid right requirement, it is characterized by: embed in the groove (7) of handle (6) and the stub area (8) that is fixed together with the lid (19) of pegging graft there has groove (28) or undercut groove, muscle sheet (29) embeds wherein.

7. by each electrical plug connector of aforesaid right requirement, it is characterized by: the axial open end of lid (19) the sealing handle (6) of pegging graft, and has a pin shape section (20) that stretches into hollow profile inside, pass the hole (10) on the stub area (8) of locking folder (5) described best kayser of pin shape section or buckle, will lock folder (5) thus and be fixed in the groove (7).

8. by each electrical plug connector of aforesaid right requirement, it is characterized by: the lid (19) of pegging graft has and cover shape section (21) and the other interior zone (22) of handle (6) cavity of stretching into, pin shape section (20) is formed on these zones, and wherein these zones (22) stub area (8) of always extending to locking folder (5) goes up and is close to above it securely.

9. by each electrical plug connector of aforesaid right requirement, it is characterized by: arm (11,12) connect rigidly mutually, and between described two plug-in connectors part, produce closing force by the elasticity of the perimeter seal (24) between two plug-in connector parts (2,3).

10. by each electrical plug connector of aforesaid right requirement, it is characterized by: the arm of locking folder (5 ') (11 ', 12 ') make spring shape, its size is selected like this, described arm is leaned against on the tenon axle (15) when connecting closure, at first slightly expansion when connecting disengagement connects until set up kayser under the spring force effect.

11. each the electrical plug connector by the aforesaid right requirement is characterized by: arm (11 ', 12 ') U-shaped or Ω shape mutually connects.

12. each electrical plug connector by the aforesaid right requirement, it is characterized by: on two free end zones of arm (11 ' and 12 '), be formed separately the hook-type section (16 of extending in opposite directions mutually, 17), these hook-type sections are surrounded with certain interval mutually at the closure state of plug-in connector, the size in this gap is selected like this, can excess elongation though spring can be thrown off from its latched position.

13. each the electrical plug connector by the aforesaid right requirement is characterized by: between hook-type section (16,17), adorn a cushion block of S shape (25) preferably.

14. by each electrical plug connector of aforesaid right requirement, it is characterized by: cushion block (25) has kayser projection (26) on its end, these kaysers projectioies embed in the groove (27) of arms (11 ', 12 ').

15. each electrical plug connector by the aforesaid right requirement, it is characterized by: two arms (11 ', 12 ') have a hole (23) and a latch groove (14) respectively, make locking folder (5 ') can be hinged on the hole of each bar arm (11 ' or 12 '), the arm that wherein matches (12 ' or 11 ') is used for kayser when plug-in connector is closed.

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