JP2014526772A - Contact protection plug-in connector - Google Patents

Abstract

  The present invention includes a socket having a socket contact body having a coaxial socket contact, a socket sleeve for housing the socket contact body, and a plug, the socket contact body having a plurality of alignment recesses, At least three alignment ribs (or positions) having a multi-pole pin body having a coaxial pin contact, the coaxial pin contact being inserted into an insertion-side receiving chamber of an insertion sleeve surrounding the plug, and the insertion sleeve corresponding to the alignment recess In the contact protection type circular insertion connector in which an alignment projection is formed on the inner periphery of the insertion sleeve in the plug accommodating chamber, each of the at least three alignment ribs has a guide surface at its insertion side end. This guide surface together forms a support surface for the end surface of the socket sleeve, which is formed as a counterpart support portion, and the guide surface A plug orientation that forms a common plane so that the plug's end surface contacts the guide surface when the plug is inserted into the socket and the end surface rotates on the guide surface so that the plug can be plugged into the socket The plug can be brought into position and the alignment rib can be inserted into the corresponding alignment recess.

Description

  The present invention relates to a contact protection type plug-in connector according to the premise of claim 1.

  In particular, the present invention relates to a contact protection type coaxial plug connector. The invention further relates to a circular plug connector, a coaxial circular plug connector forming the circular plug connector, and a coaxial cable socket for accommodating the circular plug connector.

  It is necessary to prevent damage to the contact, here the coaxial contact of the plug-in connection, in particular in various applications, in particular in the coaxial plug connection.

  In addition to coaxial plug connectors, contact protected plug connector systems already exist in the field of automotive applications and in particular in the field of airbag plug connectors.

  Patent Document 1 discloses a contact protection type insertion connector system including a socket having a contact to be protected and an insertion connector that can be inserted into the socket. Contact protection depends on geometrical conditions beyond the height of the plug connection.

  Patent Document 2 discloses another embodiment of a contact protection type insertion connector.

  There is also disclosed contactor protection against immersion like a shovel. This contact protection is provided through a sufficiently high alignment rib that is inserted into the contact socket.

  At this time, the length of the contact is adjusted to the length of the contact socket so that the contact does not come into contact with the socket even when the insertion connector is immersed in the socket in a shovel shape and is not damaged accordingly.

  In the case of multipole coaxial plugs formed as multipole plugs formed symmetrically with respect to the central central axis, there are special requirements for contact protection and plug certainty.

  It is known that when a coaxial plug and a coaxial socket are brought into contact with each other, the coaxial contact is susceptible to mechanical damage and requires special mating accuracy.

  Of course, in the case of so-called ohmic plug connectors, the plug connector and the socket are pushed to an unscheduled position when they are inserted into each other, and in some cases the user can insert the plug connector relative to the socket. There is a risk that it will rotate further and thereby damage the coaxial contact.

  Special difficulties arise when the plug-in connector has to be plugged "blindly" and the operator has to insert the plug into the corresponding socket in a hidden position, so to speak.

  In this case, in practice, failure and damage of the coaxial contact frequently occur.

  Another problem is that it is possible to insert circular plugs in four different positions, in particular in the case of a four-pole plug structure which is formed symmetrically, and in particular oriented symmetrically with respect to the central plug axis. .

  That is, in addition to damage to the coaxial contacts, it is necessary to properly orient the plug-and-connect devices and to contact each other as specified.

European Patent Application Publication No. 1184232A2 US Pat. No. 6,402,540B1

  SUMMARY OF THE INVENTION An object of the present invention is therefore to provide a plug connector system, in particular a coaxial contact, which can be inserted with the correct orientation and prevents damage or contact of the connector when the plug connector is inserted and connected. It is to provide a plug-in connector system.

  In particular, the problem is to provide the above described plug connection consisting of a plug and a socket, provided with a seal, whereby the plug is sufficiently sealed against environmental influences in the plugged state.

  This problem is solved as a whole by the plug connection according to the features of claim 1. In this case, advantageous embodiments of the invention are claimed in the other claims.

  Embodiments of the present invention will be described with reference to the drawings.

It is sectional drawing of the insertion connector which concerns on this invention. It is sectional drawing of the socket main body of a coaxial cable socket. FIG. 3 is a perspective view of the socket body of FIG. 2 as viewed from the right, that is, a plug side of the socket body. FIG. 6 is a side view of a coaxial socket contact element. FIG. 6 is a side view of a coaxial pin contact element. It is sectional drawing of the state which assembled the two parts of the pin main body which consists of two parts. It is the perspective view which looked at the pin main body of FIG. 5 from the insertion side. FIG. 2 is a cross-sectional view of a coaxial circular plug connection similar to FIG. 1 but omitting the attached coaxial cable socket. In this case, a plug sleeve is mounted on the pin body of FIGS. 5 and 6, and the plug sleeve itself supports the lock nut. It is the perspective view which looked at the coaxial circular insertion connector of FIG. 7 from the insertion side of the left side of FIG. It is a schematic plan view of the contact surface 29 of the socket body. 3 is a schematic partial front view of an insertion sleeve 200. FIG. FIG. 8 is a view similar to FIG. 2, shown adjacent to the coaxial circular plug connector of FIG. 7. FIG. 8 is a view similar to FIG. 7, shown adjacent to the socket body of FIG. 2. It is a figure which shows insertion depth. It is a figure which shows insertion depth. It is a figure which shows insertion depth, and the state of this figure corresponds with the state of FIG.

  The figure shows an embodiment of a coaxial circular plug connector 10 according to the present invention incorporating coaxial contact elements 13,14. A coaxial circular plug connector 10 includes a coaxial cable socket (shortened as a socket) 11 according to the present invention and a coaxial circular plug connector (shortened as a plug or simply called a plug) 12 according to the present invention. ing.

  That is, in the following, the term socket 10 and a plug connection or a simple “plug” 12 are also used.

  A number of coaxial socket contact elements 14 are arranged in the socket 11. A number of coaxial pin contact elements 13 are arranged in the plug-in connector 12.

  Each socket contact element 14 ends on the insertion side with a socket sleeve 64, which surrounds the socket contact 164. Similarly, each pin contact element 163 terminates on the insertion side with a pin sleeve 63, which surrounds the pin contact 163.

  Since the inner diameter of the pin sleeve 63 is somewhat smaller than the inner diameter of the socket sleeve 64, the pin sleeve 63 can be inserted into contact with the socket sleeve 64 during the insertion process. The socket contact 164 has an opening into which the pin contact element can be inserted.

  As mentioned above, the formation according to the invention of the cable socket 11 and the plug connector 12 makes it possible to use the coaxial contact elements 13, 14 in use, especially in the case of the plug connector of DINIEC 610762 106, That is, the coaxial socket contact 164 and the coaxial pin contact 164 are prevented from being damaged.

Socket 11
The socket 11 is substantially preferably an integral socket body 15, a socket fixing sleeve (socket screw-in sleeve) 17 (FIG. 1) for receiving the socket body 15, and a socket body 15 for fixing the socket body 15 to the socket screw-in sleeve 17. Fixing means.

a) Socket body 15
The socket body 15 (see FIG. 2) is elongated and has a generally cylindrical shape, which has a longitudinal axis α. The socket body 15 preferably made of synthetic resin is formed with, for example, four identical longitudinal holes 20, 21, 22, 23 extending parallel to the longitudinal axis α. Each of these holes serves to receive a coaxial socket contact element 14. The socket body 15 has an abutment on the plug-in side which extends for the plug 12 and preferably for the plug end face 90 described below of the plug sleeve or plug-in sleeve 200, preferably horizontally and perpendicularly to the plug-in direction. A surface or sliding surface 29 is formed. Positioning recesses 35 to 39 are formed on the sliding surface or the contact surface 29, that is, the end surface on the insertion side of the socket body 15.

  Each vertical hole 20-23 forms the insertion opening 24 arrange | positioned at the insertion side, and the connection opening 25 arrange | positioned at the other side.

  Each longitudinal hole 20-23 has hole sections A1, A2, A3 having different diameters. The hole section A3 has the largest diameter D3. The hole section A1 has a diameter D1 that is somewhat smaller than D4, and the hole section A2 has a diameter D2 between the diameters D1 and D3.

  A contact surface 27 extending in a ring shape is formed at the transition from the hole section A1 having D1 to the hole section A2 having the minimum diameter D2. The socket contact element 14 is in contact with the contact surface.

  The socket body 15 has three sections L1 to L3 on its outer periphery, that is, the central section L1 separates the connection section L2 from the insertion section L3. All the sections L1 to L3 have a substantially cylindrical surface. As can be seen from FIG. 2, a longitudinal groove 31 extending over the entire length of the socket body 15 is formed in all the sections L <b> 1 to L <b> 3.

  The outer diameters of the sections L1 and L3 are the same. The section L1 has a larger diameter than L2 and L3, and forms an annular protrusion 30. In addition to the groove 31, a large number of alignment means in the form of alignment recesses 35 to 39 are provided on the outer periphery of the longitudinal section L3. The alignment recesses 35 to 39 all extend in parallel to the longitudinal axis α of the socket body 15 up to the ring-shaped end surface 310 formed by the annular protrusion 30. The individual alignment recesses 35 to 39 are distributed on the outer periphery of the section L3 and preferably have a different shape. The alignment recess 35 is arcuate in cross section, and the alignment recesses 36, 37, 39 are in the shape of radial notches, which preferably have different circumferential lengths.

b) Socket sleeve 17
The socket sleeve 17 (see FIG. 1) is preferably made of metal and is fixed to the socket body 15. The socket sleeve 17 has a contact end 171 facing the plug 12 and a connection end 172 on the opposite side.

  Holes 174 (see FIG. 1) through the socket sleeve 17 have at least three different diameters, thereby forming an end face or end abutment surface 310. Furthermore, at the transition from a slightly larger diameter near the connection end 172 to a slightly smaller diameter toward the contact end 171, a contact surface 173 for the end surface of the socket body 15 or the end contact surface 310 is provided. It is formed.

  The socket body 15 is fixed in the position shown in FIG. 1 so as not to rotate relative to a socket screw sleeve 17 that serves for fixing with the plug 12.

  The socket screw sleeve 17 has a female thread 129 adjacent to its contact end 171. Further, the socket screw sleeve 17 forms a bead 44 at the contact end 171 thereof. The female thread 129 extends within the range of the inner surface 45 of the socket sleeve 17.

Socket contact element 14
The coaxial socket contact element 14 is entirely a tubular formation, preferably made of metal. This formation comprises five sections, some of which have different diameters. The section F1 forming the connection end 143 has the largest diameter K1, and the subsequent section F2 has a diameter K2 similar to the diameter K1. The section F3 connected to the section F2 has a diameter K3 smaller than the diameter K2, and the subsequent section F4 has a diameter K4 smaller than the diameter K3. In this case, the section F4 having the smallest diameter forms an elastic locking arm 140 on the outer periphery. This locking arm is made from the material forming the section F4. Finally, the section F5 has a diameter K5 that is slightly larger than K4 and further forms the contact end 142 of the socket contact element 14. A contact surface 144 is formed at the transition from the section F2 to the section F3. This contact surface (see FIG. 2) contacts the contact surface 27 when the contact element 14 is inserted into the longitudinal hole 20.

  Within the socket sleeve 64 of the tubular body of the socket contact element 14, the contact socket 320 visible in FIG. This contact socket is surrounded by a contact wall 141 in the section F5.

Plug-in connector 12
The plug-in connector (plug) 12 includes a plug-in or plug sleeve 200 having a hollow chamber 201 for receiving the pin body 16, and a connecting sleeve or fixing sleeve 18 surrounding the plug-in sleeve 200, preferably a screw-in sleeve. ing.

Screwed sleeve 18
The screw sleeve 18 has two sections V1 and V2. The section V1 has a smaller diameter than the section V2. Therefore, a hollow chamber or hole 201 with a step is formed. An insertion sleeve 200 is mounted in the hollow chamber. The threaded locking sleeve 18 forms a stepped hollow chamber or hole 301 to accommodate the insertion sleeve 200. In this case, the diameter of the hollow chamber 301 in the section V1 is smaller than the diameter in the section V2. Accordingly, the plug-in sleeve 200 has a small outer diameter in the area of the hole in the section V1 and a large diameter in the section V2.

  In the section V1, the screw sleeve 180 has a male screw 321. This male screw can be screwed into the female screw on the insertion side of the socket screwing sleeve 17.

  The wall thickness of the screwed sleeve 18 preferably made of metal is substantially the same in both sections V1, V2. However, the section V1 is shifted from the section V2 inward in the radial direction. An outer periphery 321 is formed on the outer periphery of the lock sleeve 18 in the range of V1. The connecting sleeve 18 is arranged on the outer periphery of the screwed sleeve 200 so that it can rotate with a small axial play.

Insert sleeve 200
The plug-in sleeve 200 is preferably made of metal and is provided with ribs 70 extending axially at radial positions on its inner circumference (see FIGS. 7 and 8). The rib extends from the contact side end 86 to the connection side end 87 over substantially the entire length of the sleeve 200. The rib 70 engages with a groove 60 formed in the pin body 16 having two parts. Accordingly, the pin body 16 is substantially non-rotatable with the insertion sleeve 200.

  The plug sleeve 200 (see FIG. 1) has two plug sleeve sections S1, S2. Section S1 has a smaller outer diameter than section S2. The cylindrical inner surface of section S1 has a smaller inner diameter than the cylindrical inner surface of section S2. Thereby, the contact surface 80 (FIG. 7) for the insertion side end surface 56 of the pin main body 15 is formed in the transition part from the section S1 to the section S2.

  The plug sleeve 200 forms an alignment element at its contact end 86, preferably in the form of alignment protrusions 76-79. This alignment protrusion protrudes radially inward from the inner wall of the sleeve 200 and is provided so as to be able to engage with the alignment recesses 35 to 39 of the socket body 15. Therefore, the cross-sectional shape of the alignment section 71 formed by the alignment protrusions 76 to 79 and the rib section 71 is complementary to the cross-sectional shape of the related alignment recesses 35 to 39. The alignment protrusions 71, 76-79 preferably extend in the axial direction only over about one third of the length of the hole 201 of the plug-in sleeve 200.

  The plug sleeve 200 has a plug sleeve end surface 97 formed at the contact side end portion 86 thereof. The plug sleeve end face has an insertion end face 90 and a guide face 73, and the guide face is slightly retracted with respect to the insert end face 90.

  The plug-in connection sleeve 18 is mounted on the plug sleeve 200 so as to be rotatable and somewhat reciprocable but not removable.

  The two-part pin body 16 is shown in detail in the cross-sectional view of FIG. 6 and the perspective view of FIG. The pin body 16 includes four tubular longitudinal protrusions. Since each of the vertical protrusions has a slightly smaller outer diameter, it fits into the hole 20 formed by the socket body 15.

  A coaxial pin contact element 84 is disposed in the hollow chamber 245 of the pin body.

  Specifically, the pin body 16 includes a pin body connection portion 51 and a pin body insertion portion 52. The connection portion 51 and the insertion portion 52 are locked to each other. For this purpose, locking elements 158, 600 on the connection part side and the plug-in part side are used.

  The present invention achieves precise contact between the coaxial socket contact 164 and the coaxial pin contact 163 by precise guidance of the contact elements 14, 84. Instead of a single alignment projection with an associated alignment recess, a number, preferably five, alignment elements are provided which are differently formed in the present invention. The alignment element provided on the plug-in side is somewhat retracted. In this case, the coaxial contact is positioned so as not to be damaged during the rotational movement.

  Thereby, in the coaxial circular plug connector 10 according to the present invention, the plug connector 12 is mounted on the cable socket 11 and is located in one plane (shown as 73 in FIG. 10). The plug guide surface formed by the alignment elements 76 to 79 contacts the socket sliding surface 29.

  When rotating the plug-in connector 12, the orienting position is achieved when the corresponding alignment elements fit together. In this case, the plug enters the socket 11 and further enters a predetermined depth.

  In the case of the embodiment, this depth is determined by the front thread of the fixing sleeve hitting the front thread of the cable socket.

  Then, the connecting sleeve 18 is rotated. That is, the cable socket is screwed. In this case, the plug body and socket body are already oriented. In this case, the socket contact 163 and the plug contact 164 are finally connected.

  To obtain the plug connector shown in FIG. 1, when the plug connector 12 is inserted into the socket 11, the plug connector 12 is moved toward the socket 11. This axial movement ends when the guide end face 73 hits the socket sliding face and the insertion sleeve abutment face 29, i.e. when the alignment elements 76-79 and 35-39 are not accidentally oriented.

  The user can then achieve the radial position aligned by the alignment recess and alignment element by rotating the bayonet connector 12. In this case, the guide end face 73 slides on the insertion sleeve abutment surface 29 until the oriented position is reached. In this case, the axial orientation of the socket 11 and the plug-in connector 12 remains maintained during the searching rotational movement. When orientation is achieved by the engaging alignment recesses and alignment elements that engage, the ring-shaped longitudinal protrusions 160 of the pin body 16 enter the corresponding longitudinal holes 20-23, preferably in the position schematically illustrated in FIG. To reach. In this position, preferably the coaxial contact socket 64 is not yet engaged with the corresponding coaxial pin contact. Only when the plug-in sleeve 200 moves further to the position shown in FIGS. 1 and 15 by rotating the lock nut 300 will the coaxial contact socket engage the coaxial pin contact.

10 Coaxial circular plug connector 11 Coaxial cable socket, socket 12 Coaxial circular plug connector, plug connector, plug 13 Coaxial pin contact element 14 Coaxial socket contact element 15 Socket body 16 Pin body 17 Socket fixing sleeve, socket screw sleeve, plug connection Socket sleeve 18 for fixing to the tool 18 Lock sleeve or fixed screw-in sleeve 20 Longitudinal hole 21 Longitudinal hole 22 Longitudinal hole 23 Longitudinal hole 24 Insertion opening 25 Connection opening 27 Abutment surface 29 Sliding surface or abutment surface, insertion Sleeve contact surface 30 Annular projection 31 Vertical groove 35 Alignment recess 36 Alignment recess 37 Alignment recess 38 Alignment recess 39 Alignment recess 40 Cylindrical contact surface 41 Inner surface 42 Wall portion 43 Wall portion 44 Bead 45 Inner surface 51 Pin body connection part 52 Pin body portion 56 End surface 60 Groove 63 Cylindrical pin sleeve 64 Cylindrical socket sleeve 70 Rib 71 Rib section, alignment element, semicircular notch 72 Rib section, small semicircular notch 73 Guide end face 74 Contact end 75 Connection end Part 76 alignment element, alignment protrusion 77 alignment element, alignment protrusion 78 alignment element, alignment protrusion 79 alignment element, alignment protrusion 80 contact surface 84 coaxial pin contact element 86 contact side end 87 connection side end Portion 90 Insertion end face 96 Contact side wall 97 Insertion sleeve end face 129 Female thread 140 Locking arm 141 Contact wall 142 Contact end 143 Connection end 144 Contact surface 158 Locking element 160 Longitudinal protrusion 163 Pin contact 164 Socket contact 171 Socket sleeve contact end 172 Connection end 173 Contact surface 174 Hole 00 Plug sleeve, insertion sleeve 201 Hollow chamber, hole 242 Connection end 243 Contact end 244 Contact surface 245 Hollow chamber 250 Annular web 300 Lock nut 301 Hollow chamber 310 End surface, end contact surface 320 Contact socket 321 Male screw 400 Front thread 600 Locking element α Longitudinal axis A1 Hole section A2 Hole section A3 Hole section D1 to D3 Diameter L1 Section L2 Section L3 Section F1 to F4 Section V1, V2 Hollow chamber section

Claims (19)

A socket (11) having a socket contact body (15) having a coaxial socket contact (14), a socket sleeve (17) for accommodating the socket contact body (15), and a plug (12); The socket contact body (15) has a number of alignment recesses (35, 36, 37, 38, 39) and the plug comprises a multipolar pin body (16) having a coaxial pin contact (13); The coaxial pin contact is inserted into the insertion-side accommodation chamber of the insertion sleeve (200) surrounding the plug (12), and the insertion sleeve (200) is inserted into the alignment recess (35, 36, 37, 38, 39). Corresponding at least three alignment ribs (76, 77, 78, 79) (or alignment protrusions) are arranged on the inner circumference of the plug sleeve in the receiving chamber of the plug (12). Are formed in the contact protection formula circular bayonet fitting,
Each of the sockets in which at least three alignment ribs (76, 77, 78, 79) each form a guide surface (73) at its insertion side end, and this guide surface is formed together as a counterpart support portion. A support surface for the end surface (360) of the sleeve (17) is formed, and the guide surface (73) forms a common plane so that when the plug is inserted into the socket, the end surface of the plug ( 360) contacts the guide surface (73) and rotates the end surface (360) on the guide surface (73), thereby bringing the plug into a plug orientation position where the plug can be inserted into the socket. The alignment ribs (76, 77, 78, 79) can be inserted into the corresponding alignment recesses (35, 36, 37, 38, 39). Circular plug connector.   The circular plug-in connector according to claim 1, wherein when the end surface contacts the guide surface, the pin and the socket contact do not contact (or the pin and the socket contact separate).   The circular insertion connector according to claim 1 or 2, wherein the alignment ribs have different shapes.   The circular insertion connector according to any one of claims 1 to 3, wherein the alignment rib is formed integrally with the insertion sleeve.   5. The at least one end surface (a widened end surface on the lower side in FIG. 8) extending in the circumferential direction on the outer side over an angular range of about 30 ° is provided. Round plug connector.   The circular plug-in connector according to any one of claims 1 to 5, wherein the plug and the socket include a screw threaded portion.   The circular plug connector according to claim 1, wherein the coaxial contact includes an elastic locking arm.   The circular insertion connector according to any one of claims 1 to 7, wherein the pin body is formed as a pin body having two parts.   An opposing counterpart support for the elastic locking arm is provided in the pin body consisting of two parts, preferably the opposing support is arranged in the circumferential direction in parallel. Item 8. The circular insertion connector according to Item 7.   The circular plug connector according to claim 7, wherein the circular plug connector has a four-pole symmetrical structure.   8. The circular plug connector according to claim 7, wherein the plug sleeve is made of metal. A coaxial circular plug connector comprising a coaxial cable socket (11) and a coaxial circular plug connector (12) connected to the coaxial cable socket (11),
The coaxial cable socket (11) comprises means for cooperating with means provided on the coaxial circular plug connection, and when the circular plug connection and the cable socket are fitted together, the coaxial contact element of the socket sleeve Coaxial circular plug connector in which the means are coordinated so that the contact socket (320) is accurately oriented by the pin contact (123) of the coaxial circular plug connector (112).   The socket body (15) is provided with a sliding surface or a contact surface (29) to ensure the orientation of the coaxial contact element in the socket (11) and the plug (12) during the insertion process. The circular plug connector according to claim 12, characterized in that the sliding surface or abutment surface cooperates with the sliding surface of the plug connector (12) during the plugging process.   A contact surface is formed by an alignment element on the insertion side or end face of the insertion sleeve (200) that houses the pin body (16), and this contact surface contacts the sliding surface (20) to initiate the sliding process. The circular insertion connector according to claim 12 or 13, wherein the insertion process can be continued when the alignment protrusion engages with an alignment recess provided on the socket side.   Formed on the end face (97) of the insert sleeve is an insert end face (90) arranged radially outward and an end face (73) receding substantially axially defined by the end face of the contact element adjacent thereto. The circular insertion connector according to claim 12, wherein the connector is a circular insertion connector.   16. The pin body (16) is formed by two parts and comprises a locking element (158) and a locking element (600). Circular plug connector.   Abutting surfaces are provided on the socket side and the plug side, respectively, and when the alignment element is oriented, the abutting surfaces abut each other and after a short axial relative movement between the socket and the plug. The abutment surfaces meet each other to maintain the orientation of the plug and socket, and when further axial movement is initiated, for example by a screwing movement, the original contact between the contact elements of the socket and plug is made. The circular insertion connector according to any one of claims 12 to 16, wherein the connector is a circular insertion connector.   The contact surface on the socket side is provided by the first thread of the female screw of the socket screw sleeve, and the contact surface on the plug side is formed by the leading edge of the lock screw screw sleeve or the fixed screw sleeve (18) of the plug. The circular insertion connector according to any one of claims 12 to 17. a) Coaxial cable socket (socket) (11);
b) a coaxial circular plug connector (plug connector) (12);
c) a coaxial circular plug connector comprising means (17, 18) for securing the plug connector (12) to the cable socket,
The socket (11) is
1. The socket body,
2. A socket fixing sleeve that serves to accommodate the socket body (15);
3. Means (129) for fixing the socket body (15) to the socket fixing sleeve (17) so as to prevent relative rotation and sliding;
The socket body (15) is preferably integrally formed in the form of a drum having an outer diameter,
a) forming a circular connection side having a connection surface;
b) A contact side having a circular contact surface is formed on the side opposite to the connection side, and the contact side extends in the longitudinal direction of the drum and parallel to each other, and preferably a large number of, preferably four, contact receiving holes (21-23) The contact receiving hole extends from the connection side toward the contact side, and opens on each of the connection side and the contact side to receive the socket contact element (14). Fixed in place by fixing means in the hole,
The plug-in connector (12)
1. A pin body (16);
2. A fixing sleeve (18) for receiving said pin body (16) having an inner diameter and an outer diameter;
3. Means for fixing the pin body in the fixing sleeve,
This pin body fixing means is
a) an axial position fixing means for fixing the pin body at a predetermined axial position in the fixing sleeve;
b) a radial position fixing means for fixing the pin body at a predetermined radial position in the fixing sleeve;
The pin body has a drum section having an outer diameter, and a plurality of sections having an inner diameter and an outer diameter, for example, formed by four tubes, and the drum section is an operation surface separated in two axial directions, that is, A coaxial circular insertion connector in which a connection surface and an insertion surface are formed, a coaxial contact is inserted from the connection surface, and a tube that is all finished in the tube end plane is inserted from the insertion surface.

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