FR2734415A1 - ELECTRICAL PLUG CONNECTOR WITH FLUID TRANSMISSION - Google Patents

Abstract

An electrical connector with plugs, equipped with a fluid transmission, consists of a male plug (2) and a female plug (3) in which are arranged pairs of electrical contacts with pins, composed of a tip contact (4) and a contact cell (5) arranged on a circle concentric with the central fluid transmission device (1) composed of a pin (14) and a cell (15), one connector pins being provided with a handle (10). A device for reciprocating male (2) and female (3) plugs which constitutes a construction unit with the central connection device for the transmission of fluid (1), consists of snap hooks (17) with radial elasticity, arranged in the axial extension of the cell (15), obtained by slots and cooperating with a radial groove of the pin (14).

Description

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  The present invention relates to an electrical plug connector equipped with a fluid transmission, in particular an air transmission, which consists of a male plug and a female plug, both essentially consisting of '' an insulating body, o in said plugs are arranged pairs of electrical plug contacts consisting of a contact tip and a contact socket, arranged on at least one circle concentric with the central passage of the fluid, o a device connection consisting of a pin and a cell ensuring the transmission of the fluid is also arranged partly in the male plug and partly in the female plug and o one of said

cards is equipped with a handle.

  Electrical plug connectors equipped with a fluid transmission of the type described above are known as such. Connectors of this type are usually used to connect a cable to a machine, one of the plugs

  connector, male plug or female plug, being permanently mounted

  nente on the machine, the other plug being assembled with a movable cable. In the case of this type of plug connectors, the plug assembled with the cable is

  provided with a handle and the male part of the connection device for the trans-

  fluid mission is housed in the connector plug provided with the handle. The

  two parts of the connection device for the transmission of the fluid are con-

  formed according to the usual type of construction of this kind of parts so that after assembly of said connection device the pin of the male part is engaged in the socket of the female part; The seal between said pin and said female part is ensured by an O-shaped sealing ring housed in a radial groove formed in the socket of the female part. This type of construction allows certainly to establish simultaneously a multitude of electrical connections and the connection for the transmission of the fluid but present

  the downside that the force required to separate the connections depends ex-

  clusively frictional forces occurring between the parts of the electrical connections and the two parts of the connection device for the transmission of

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  fluid, and therefore also depends on imponderables, such as corro-

  or the degree of soiling of the contact torques. In order to prevent involuntary separation of connectors of this known type, it is necessary to

  provide additional auxiliary means, such as means of ver-

  rusting, which increases the manufacturing cost and involves an additional maneuver at least to detach the connector. Another drawback of this known type of construction lies in the fact that the male part of the connection device for the transmission of fluid, which is free from wear, is always provided on the side of the plug connected to the movable cable while the part female exposed to wear is always placed on the machine and is therefore more difficult

To replace.

  Consequently, the object of the present invention is to improve an electrical plug connector equipped with a fluid transmission, in particular a

  air transmission, of the type described above which, on the one hand, allows

  rantant a separation force remaining constant throughout the duration of

  life of the two connector parts to detach the lock between the parts

  male and female connector parts and, on the other hand, to associate all the connector parts exposed to wear, to the plug connected to the cable which is of any

  more exposed to wear and easier to replace.

  To achieve these objectives, the present invention provides a device for reciprocal locking of the male plug and the female plug, forming a construction unit with the central connection device for the transmission of

  fluid. This has the advantage of being able to dispense with anti-detective means.

  chement complementary or to operate separately.

  In accordance with the invention, it is more particularly provided that the device

  positive interlocking of male plug and female connector

  plug connector consists, on the one hand, of snap hooks with elasticity

  dial, arranged in the axial extension of the cell forming the female plug of the connection device for the transmission of fluid, and, on the other hand, of a

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  radial groove provided in the spindle rod forming the male part of said device

  positive connection. This conformation of pre-detachment security

  first of all feels the advantage of automatically becoming effective during the assembly

  wiring of the two parts of the connector. It also has the advantage of being able to

  see determine in advance the minimum force required to detach the connector. Still according to the invention, the click hooks which constitute a single piece with the socket forming the female part of the connection device

  for the transmission of fluid are obtained by radial slots in a pro-

along the axial length of said cell.

  The use of click hooks which constitute a construction unit

  with the socket forming the female part of the connection device for the trans-

  fluid mission and which are distinguished by a radial elasticity, allows

  rantant not only a very simple conformation of anti security

  detachment but also the maintenance of a detachment force

  aunt throughout the life of the connector. The construction according to the invention is further distinguished by the very advantageous manufacturing cost of anti-detachment security, which simultaneously avoids any additional mounting cost. This is all the more true when, according to a preferential mode of

  embodiment of the invention, the click hooks are obtained by slits

  dials of an axial extension of the cell.

  It is advantageously provided according to the invention that the radial groove

  swam in the spindle rod forming the male part of the connection device for the transmission of fluid is arranged in a segment of said spindle with a larger diameter, which advantageously has a conical inclination towards the end of the spindle in order facilitate assembly of the connection device. According to another construction detail of the invention, it can be provided that the cell forming the female part of the connection device for the transmission

  of fluid is located in the half of the connector equipped with a handle, in par-

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  particular in the half of the connector assembled with the movable cable so that the part exposed to wear of the connection device can be replaced

  simultaneously with the cable whose replacement will in any case be necessary

  after a certain number of uses without the need to monitor particularly the wear of half of the connection device. It can finally be provided according to the invention that the fluid tightness between the socket and the pin inside the connection device for the transmission of the fluid is ensured by an O-shaped sealing ring, housed in a groove

  radial provided in said cell, the spindle having a peripheral surface

that noticeably smooth.

  The invention will be explained in more detail by the description of an example

  illustrated by the drawing attached for information.

  Figure 1 is a longitudinal section of the two parts of a connector

  electric plug fitted with a fluid transmission.

  Figure 2 shows an enlargement of the two parts constituting the dis-

  positive connection for fluid transmission.

  Figure 3 is a front view of the socket of the connection device

  for fluid transmission according to figure 2.

  The electrical plug connector shown in the figures, which is equally

  pe of a fluid transmission (1), consists of a male plug (2) and a female plug (3) both consisting essentially of an insulating body. In order to establish the desired or necessary number of electrical connections, there is provided inside the plug (3) a multitude of contact points (4) which are arranged on a circle concentric with the connection device for the fluid transmission (1) and which cooperate with a corresponding number

  contact cells (5) arranged in the female plug (3) on a circular

  central to the fluid transmission (1). The insulating bodies constituting the male plug (2) and the female plug (3) are shaped to engage one in the other

  so that the insulating body carrying the contact points (4) has a pro-

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  long central (6) which cooperates with a corresponding receiving part (7) in the insulating body carrying the contact cells (5). The insulating body of the female plug (3) provided with contact cells (5) and assembled with a cable

  (8) by an anti-detachment safety device (9), is connected to a handle (10) which

  closes an interior hollow space (13) in which is housed said anti-safety device

  detachment (9) and which is sealed by a sealing ring (11), respectively

  vement (12), on the one hand, with respect to the cable (9) and, on the other hand, with respect to the insulating body of the female plug (3). The two parts of the connection device

  for the transmission of fluid, namely the spindle (14) and the cell (15), are provided

  placed in the center of the male (2) and female (3) plugs of the connector. Sealing

  relative to the inner wall of the opening in the corresponding insulating body

  dant is ensured by an O-shaped sealing ring. The cell (15) which is provided

  placed in the insulating body of the female plug (3) of the connector connected to the cable

  electric cable (8), is provided with an axial extension (18) subdivided into a cross

  snap locks (17) by radial slots (16), said snap hooks (17) having a certain radial elasticity due to the elasticity of the material. The hook part (19) proper of the snap hooks (17) cooperates, for a locking effect, with a radial peripheral groove (20) formed in a larger diameter segment (21) of the spindle (14 ) from the male part of the connector. To facilitate the mutual engagement of the pin (14) and the socket (15) of the connector, the larger diameter segment of the pin (14)

  has a conical inclination towards the free end of the spindle.

  The seal between the cell (15) and the spindle (14) is ensured by an O-ring seal (23) disposed in the radial groove (22) formed in

  The socket (15), the spindle rod (14) having an essential peripheral surface

slightly smooth.

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Claims (2)

  1 Electrical plug connector with a fluid transmission, in particular an air transmission, which consists of a male plug (2) and a female plug (3), both consisting essentially of 'an insulating body, o in said plugs are arranged pairs of electrical plug contacts consisting of a contact tip (4) and a contact socket (5), arranged   on at least one circle concentric with the central passage of the fluid, where a provision   connection device consisting of a pin (14) and a cell (15) assu-   rant the transmission of the fluid is also arranged partly in the male plug and partly in the female plug and o one of said plugs is equipped with a handle (10), characterized by a reciprocal locking device of the male plug ( 2) and the female plug (3), forming a construction unit with   the central connection device for the transmission of fluid.   2. Plug connector according to claim 1 characterized in that the provision   interlocking of the male plug (2) and the female plug (3) of the   plug connector consists, on the one hand, of snap hooks (17)   radial ticity, arranged in the axial extension of the cell (15) forming the female part of the connection device for the transmission of fluid, and,   on the other hand, a radial groove (20) provided in the spindle rod (14) for-   mant the male part of said connection device.   3. Plug connector according to claims 1 and 2 characterized in that the   radial groove (20) provided in the spindle rod (14) forming the male part of the connection device for the transmission of fluid is arranged in a   segment of said pin with larger diameter. 7 2734415   4. Plug connector according to claims 1 and 2 characterized in that the   click hooks (17) which form a single piece with the socket (15) for-   mant the female part of the connection device for the transmission of fluid are obtained by radial slots (16) in an axial extension (18) of said cell (15).   5. Plug connector according to one of claims 1 to 4 characterized in   that the socket (15) forming the female part of the connection device for the transmission of fluid is disposed in the half of the connector fitted with a   handle (10), in particular in the half of the connector assembled with the cable ble (8) mobile.   Plug connector according to one of Claims 1 to 5, characterized in that   that the fluid seal between the socket (15) and the pin (14) inside the connection device for the transmission of the fluid is ensured by an O-ring seal (23), housed in a groove radial (22) provided in the cell   (15), the spindle (14) having a substantially smooth peripheral surface.