Receptacle system with housing barrel made of soft material

Abstract

The invention relates to a socket system having a housing cylinder made of a soft material, the socket system having a housing cylinder, a flange-like projection being arranged at an insertion opening of the housing cylinder, the housing cylinder being made of a material having a Shore A hardness in the range of 60 to 100, the socket system further has a support ring made of a material that is harder than the housing cylinder, the housing cylinder being able to pass through the support ring until the housing cylinder abuts against the support ring by means of a flange-like projection, such that, in a state in which the socket system is mounted on the mounting plate, the flange-like projection is arranged between the mounting plate and the support ring, and the support ring has a hole, in particular a blind hole, in which the flange-like projection is inserted into the flange-like projection. The hole is configured such that the support ring is fastened on the back side of the mounting plate by a fastening device which passes through the mounting plate from the front side of the mounting plate and engages in the hole.

Description

Technical Field

[0001] The present invention relates to a socket system which is configured to receive a contact element carrier and at least one contact element received in the contact element carrier to form a part of a built-in plug connector. Background Art

[0002] Built-in plug connectors with a multi-part structure are known from the prior art. Here, contact pins (also commonly referred to as thin sheets) are pushed into a contact carrier, wherein, in addition to receiving and orienting the contact pins, the contact carrier has in particular the function of providing an inner space into which a cable plug connector for establishing contact with the contact pins is inserted. The inner space can also have elements for locking the cable plug connector. In a particular embodiment of such a built-in plug connector, the contact carrier also provides a flange, which is designed to support the contact carrier and therefore also the built-in plug connector at the region of the mounting plate surrounding the recess of the mounting plate. The flange can also have a mounting hole, for example, through which a screw for screwing the built-in plug connector onto the mounting plate can pass.

[0003] To assemble the built-in plug connector, the contact carrier is pushed into the socket system, wherein the socket system is usually designed as an integral built-in plug connector housing in the prior art, wherein a part of the contact pins is then pushed out of the built-in plug connector housing through an opening specially provided for this purpose. These parts of the contact pins protruding from the housing are then connected in each case, for example via terminals specially provided for this purpose, to the strands of a cable (e.g. a power cable), which provides a signal (e.g. a power supply signal) which is provided for transmission via the plug connection of the built-in plug connector and the cable plug connector.

[0004] In the case of prior art built-in plug connectors, the entire socket system or the entire built-in plug connector housing is made of a hard, non-elastic material, for example a harder thermoplastic, wherein the harder housing does not press so tightly against the contact pins pushed out through the opening of the housing. As a result, such a press fit between the prior art built-in plug connector housing and the corresponding contact pins is not impermeable / permeable to dust, water, moisture and / or gases, in particular air.

[0005] Particularly in the case of outdoor applications of the built-in plug connector (e.g. loudspeakers at open-air festivals), this lack of tightness between the housing and the contact pins is problematic. For example, rainfall may occur at any time here, wherein water may penetrate into the built-in plug connector when the cable plug connector is not inserted and the sealing cap provided for temporarily closing and sealing the inner space of the built-in plug connector has not yet been placed thereon. The infiltrated water may then flow to the press-fit between the built-in plug connector housing and the contact pins and collect there. As mentioned above, due to the harder housing material, this press-fit is not impermeable in particular to water, so that in the case of the built-in plug connector of the prior art there is a risk that moisture may further penetrate into the device and thus lead to a short circuit, which may damage the device and in the worst case may injure people standing around the device.

[0006] The built-in plug connectors of the prior art solve the described problem by additionally sealing the contact points of the contact pins with the housing with sealing means such as adhesive, sealing paste, sealing rings (eg O-rings) or the like.

[0007] However, the built-in plug connector housings or built-in plug connectors of the prior art have disadvantages here, since these additional components / sealing materials lead to additional costs on the one hand (e.g. material procurement costs, additional machines / personnel) and on the other hand to additional work due to, for example, additional work steps. Thus, for example, before assembling the built-in plug connector by plugging together the socket system or the built-in plug connector housing, the contact carrier and the contact pins, a corresponding sealing ring must be inserted / plugged on, or an adhesive that is still in liquid form must be applied.

[0008] Purpose of the Invention

[0009] It is therefore an object of the present invention to provide a socket system and a built-in plug connector which overcome the disadvantages of the prior art, in particular with regard to safety and the strict regulations for installation dimensions established worldwide.

[0010] A further object is to provide a socket system and a built-in plug connector in which the formation of impermeability to dust, water, moisture and / or gases, in particular air, is simplified, as a result of which outdoor use is possible without additional effort, the risk of short circuits is reduced and / or specific standards are met.

[0011] These objects are achieved by implementing at least some of the characterizing features of the independent patent claims. Features which develop the invention in an alternative or advantageous manner can be found in some of the remaining features of the independent patent claims and in the dependent patent claims. Summary of the invention

[0012] The invention relates to a socket system, which is configured to receive a contact element carrier and at least one contact element received in the contact element carrier to form a part of a built-in plug connector, wherein

[0013] The socket system has a housing sleeve which is designed such that the contact element carrier can be at least partially inserted into the housing sleeve through an insertion opening at an insertion-side end of the housing sleeve (or also referred to as: a surface on a mounting plate for mounting the socket system or a built-in plug connector on the mounting plate / at the end of the surface), wherein a flange-like projection is arranged at the insertion opening of the housing sleeve, and

[0014] The socket system is arranged to be applied and fastened by means of a flange-like protrusion of the housing barrel against the back side of the mounting plate,

[0015] in

[0016] The housing sleeve is made of a material with a Shore A hardness in the range of 60 to 100, and the socket system also has a support ring, which is made of a harder material than the housing sleeve, wherein

[0017] the housing sleeve can be passed through the support ring until the housing sleeve abuts against the support ring via the flange-like projection, so that in the state mounted on the mounting plate the flange-like projection is arranged between the mounting plate and the support ring, and

[0018] The support ring has a hole, in particular a blind hole, which is designed such that the support ring is fastened to the rear side of the mounting plate by means of a fastening device which passes through the mounting plate from the front side of the mounting plate and engages in the hole.

[0019] An embodiment of the socket system / built-in plug connector according to the invention having a housing barrel made of a softer, more elastic material than is the case with socket systems or built-in plug connectors of the prior art has the advantage that the openings of the housing barrel and the housing base can be manufactured with such dimensions that, on the one hand, the housing barrel lies tightly against the contact element carrier (e.g., made of a harder plastic, e.g., a harder thermoplastic) when the contact element carrier is pushed in, and, on the other hand, the opening of the housing base lies closely against the contact element passing through it. In other words, the area of ​​the opening of the housing base is slightly smaller than the cross-sectional area of ​​the part of the contact element that is pushed out of the housing through the opening of the housing base, so that when the contact element is pushed out (for which a certain force must be applied), the opening of the housing base expands. The area extending into the opening of the housing base then presses against the contact element to counteract this expansion force, so that a so-called press fit is formed between the opening and the contact element. Since the housing barrel of the socket system / built-in plug connector according to the invention is made of a softer, more elastic material (e.g., similar to rubber), it can expand more easily on the one hand and can fit better against the contact elements on the other hand. In this way, the press fit between the soft, elastic housing barrel and the harder, less elastic contact elements is impermeable to dust, water, moisture and / or gases, in particular air, so that in the installed state, even if someone forgets to put the sealing cap on the insertion opening of the built-in plug connector, for example when it rains and water could therefore enter the built-in plug connector, the entire built-in plug connector is impermeable to dust, water, moisture and / or gases, in particular air.

[0020] Since the press fit between the soft, elastic housing barrel and the at least one contact element is watertight and gastight, the built-in plug connector with the socket system according to the invention can comply with the IP65 or IP67 standard even when the sealing cap is not placed thereon or the cable plug connector is inserted, without the need to use additional components / sealing materials (e.g., liquid sealants that harden after application) for this purpose. Therefore, the socket system / built-in plug connector according to the invention can save additional costs (e.g., material procurement costs, additional machines / personnel) on the one hand and additional work due to, for example, additional work steps on the other hand. Therefore, these additional costs / work steps do not occur in the case of the socket system / built-in plug connector according to the invention, because no additional seal is required due to the watertight and gastight press fit, thus overcoming the disadvantages of the prior art.

[0021] In an exemplary embodiment of the socket system according to the invention, the housing cylinder is made of a material with a Shore A hardness in the range of 65 to 95, in particular in the range of 75 to 95. When selecting the hardness of the material, or when selecting the composition of the components that provide the hardness of the material, the aspects of impermeability and machinability must be taken into account. That is, if the material is selected to be too hard, then although the machinability, in particular the machinability by the injection molding method, is simplified, the sealing effect is reduced. In the case of a too soft material, although the sealing effect is very good, fine structures such as the sealing lip are difficult to manufacture (for example, undercuts are almost impossible in the injection molding method). In particular, in the case of a Shore A hardness in the range of 65 to 95, the impermeability and machinability of the housing top are also ensured.

[0022] Since the supporting ring in the socket system according to the invention is made of a harder material, it does not twist when tightening the fastening device or when assembling the built-in plug connector, so that the supporting ring can exert an increased and otherwise constant supporting effect on the housing sleeve.

[0023] Due to this optimized and permanent supporting effect of the supporting ring, the housing sleeve of the socket system according to the invention can be manufactured from a softer material than in the prior art, without the soft, flexible housing sleeve being distorted / deformed in the following situations:

[0024] When assembling the built-in plug connector according to the invention, for example when inserting the contact element carrier and / or pushing the contact element out of the opening of the housing base,

[0025] When the fastening device is passed through or when the corresponding fastening device is tightened, the fastening device exerts a certain contact pressure on the outer shell,

[0026] Due to the torque or leverage applied by the built-in plug connector inserted into the contact element carrier,

[0027] due to tension acting on the housing barrel caused by the strands and / or terminals fastened to the contact elements passing therethrough, and / or

[0028] Due to the gravity acting on the outer shell,

[0029] And the contact areas between the components, in particular the contact areas between the inner face of the opening in the housing base and the contact elements passing through, in each case therefore become impermeable to dust, water, moisture and / or gases, in particular air.

[0030] In an exemplary embodiment of the socket system according to the invention,

[0031] The material of the support ring has a Shore D hardness in the range of 60 to 100, and / or

[0032] The material of the contact element carrier has a Shore D hardness in the range of 60 to 100.

[0033] Although the main function of the contact element carrier is to receive in particular three contact elements (also referred to as pins or tabs), the term contact element carrier is to be understood as not only a contact element holder, but the contact element carrier also has the task of providing a socket for receiving a cable plug and an element for locking the cable plug in the socket. Furthermore, in a particular embodiment, the contact element carrier provides a flange, through the recess of which a fastening device for fastening (e.g., screws for screwing on) the contact element carrier to a mounting plate (e.g., a mounting plate of a loudspeaker box) passes. Thus, the contact element carrier is also intended to serve as a kind of skeleton or supporting structure, which receives other parts of the built-in plug connector or is surrounded by them and serves as a supporting and shaping structure, for example spanning an inner space of the built-in plug connector, which is arranged to receive and lock the cable plug connector.

[0034] If, in addition to the support ring, the contact element carrier is also made of a harder material, the housing sleeve is additionally supported from the inside, which prevents the above-mentioned deformation of the housing sleeve (in combination with the lack of tightness of the built-in plug connector) and stabilizes the socket system according to the invention or the built-in plug connector according to the invention as a whole. When the fastening device is tightened, the hard insertion-side end of the contact element carrier, in particular the recess of the flange surrounding the contact element carrier, and the hard flange also form a hard stop against the back side of the mounting plate, wherein the hard stop prevents the flange-shaped protrusion, which is also made of soft material and also rests on the back side of the mounting plate, from being compressed to such an extent by means of the contact pressure caused by the tightening of the fastening device that the flange-shaped protrusion, in particular at the recess of the flange-shaped protrusion, is undesirably deformed (for example, the flange-shaped protrusion is squeezed laterally between the back side of the mounting plate and the mounting flange of the support ring). Such undesirable deformation of the flange-shaped protrusion, in particular at the recess of the flange-shaped protrusion, can in turn lead to a lack of tightness inside the built-in plug connector according to the invention.

[0035] Since the support ring and the contact element carrier are made of a harder and less flexible material than the housing barrel, the operability of the socket system or the built-in plug connector is facilitated because when the socket system or the built-in plug connector is mounted on the mounting plate of the device, the installer can firmly tighten the fastening means (e.g., screws or bolts) until the stop position is sensed without the above-mentioned flange-like protrusion extrusion. In addition, the harder and more stable components reduce the possibility of damaging the built-in plug connector during installation.

[0036] In a further embodiment of the socket system according to the invention, the material of the housing sleeve, the material of the support ring and / or the material of the contact element carrier at least predominantly consists of plastic, in particular, wherein the plastic is a thermoplastic, in particular one of the following thermoplastics:

[0037] Polypropylene,

[0038] Polyethylene,

[0039] Polyurethane (e.g., "thermoplastic polyurethane"), or

[0040] Other thermoplastic elastomers (e.g., styrene-ethylene-butylene-styrene copolymer (SEBS)), or

[0041] Polystyrene.

[0042] Thus, the material of the housing sleeve can, for example, consist of at least 60%, in particular at least 80%, of plastic, to which additives such as softeners or flame retardants are added. In particular for the powerCON built-in plug connectors (powerCON chassis sockets) from Neutrik AG, headquartered in Liechtenstein (also known as the Neutrik Group), it is very important that the material of the housing sleeve is flame retardant, which is achieved, for example, by adding flame retardants to the material of the housing sleeve.

[0043] In a further embodiment of the socket system according to the invention, the housing sleeve, the support ring and / or the contact element carrier are produced by an injection molding method, a 3D printing method, a pressing method or a vulcanization method.

[0044] The use of thermoplastics (or thermoplastic elastomers) as the main component of the soft material has the advantage that the outer shell can be manufactured by injection molding, 3D printing, pressing or vulcanization, and the outer shell has an insulating effect on electric current.

[0045] Since the housing barrel, the contact element carrier and / or the support ring are manufactured as a single piece, there are no contact points, gaps, transitions, etc. in the respective components, at which a lack of tightness may occur or additional sealing by means of O-rings or adhesives is required. In this way, sealing material and work steps are also saved compared to the prior art. In addition, a plurality of functions are combined in the respective components, which in turn can simplify handling (or assembly, since fewer components need to be plugged together).

[0046] Injection molding method makes it possible to simply manufacture the various parts of the socket system / built-in plug connector according to the present invention, particularly simply manufacture the outer shell tube. For the manufacture carried out by injection molding method, it is required that the material used is first melted and can then be injected into the corresponding mold. In addition, the material must be able to solidify by cooling in the corresponding mold and keep this solidified form until it is heated again. Therefore, it is particularly advantageous that the material of the socket system / built-in plug connector according to the present invention has a thermoplastic or is mainly composed of this thermoplastic (or thermoplastic elastomer) (often adding additives such as softeners or fireproofing substances), because a large amount of thermoplastics have the above-mentioned properties, and therefore can be used for injection molding method. In addition, the Shore hardness of some thermoplastics is very close to the Shore hardness of the soft material of the outer shell tube, particularly amorphous thermoplastics, such as low-density polyethylene (LD-PE), atactic polypropylene (PP-at) or atactic polystyrene (PS-at).

[0047] Since the contact element carrier and the support ring are provided to form the support structure / skeleton of the built-in plug connector, it is particularly advantageous if the contact element carrier and the support ring are made of a harder material than the housing barrel. Since, in an advantageous embodiment, the contact element carrier and the support ring are manufactured in exactly the same way as the housing barrel by injection molding, 3D printing, pressing or vulcanization, it is particularly advantageous if the material of the contact element carrier and the support ring has a thermoplastic, in particular mainly consists of the thermoplastic. Semi-crystalline thermoplastics such as isotactic PP, isotactic PS or high-density polyethylene (HD-PE) can be used for this purpose.

[0048] The advantage of producing the individual components of the socket system / built-in plug connector according to the invention by means of injection molding is that the injection molding method allows high-precision production on the one hand and on the other hand different components (e.g. plastic and flame retardant) can be mixed together in different proportions "like a recipe". It can then be checked whether the end product has the desired material properties in the recipe used and, if necessary, the recipe can be adjusted.

[0049] Compared with the prior art, another advantage of the embodiment of the socket system / built-in plug connector according to the present invention is that, despite the addition of a flame retardant, the outer shell barrel still has the above-mentioned Shore A hardness. It is a huge challenge to produce such a flame retardant V0 material within such a Shore A hardness range, because materials with such flame retardant protection have become very hard and brittle so far, thus losing their sealing effect. Flame retardant protection is particularly important for powerCON type plug connectors, because these plugs need to comply with standard UL 94 (i.e., the material and the plug must be certified as V0 at 1 mm according to UL94). Due to these standards or the requirements of these standards, it is advantageous to add flame retardant protection (a certain proportion of flame retardant additives) to this material. The protection category can be determined by the percentage of the flame retardant additive added to the total mixture.

[0050] In other embodiments, the material of the housing barrel can also be UV-stable (according to UN standard UL50E, therefore UL certification f1 is required). For this purpose, 10-15wt% (weight percentage) or 10-15mol% (mole percentage) or 10-15 volume % (volume percentage) of UV stabilizer is added to the material. Due to UV stability, the socket system / built-in plug connector according to the present invention can be used outdoors. For example, the "True Outdoor Protection" (TOP) product line of Neutrik AG, a company headquartered in Liechtenstein (also referred to as Neutrik Group), can be used.

[0051] Furthermore, the soft material of the housing sleeve of the socket system according to the invention is designed such that during production of the housing so-called undercuts can also be formed by injection molding methods, which makes it possible, for example, to form sealing lips or wall-like projections.

[0052] In a further embodiment of the socket system according to the invention, the outer housing sleeve further comprises:

[0053] a housing base located at a rear end of the housing barrel opposite the insertion end, and

[0054] a housing barrel extending from the insertion opening to the housing base,

[0055] The radial extent of the support ring (in other words: diameter or size) and the radial extent of the housing barrel (in other words: diameter or size) match each other, so that when the housing barrel passes through the support ring, the housing barrel is pressed against the inner surface of the support ring and supported thereby, in particular, the extent of the axial extension of the support ring in the direction in which the housing barrel passes through the support ring (the direction also corresponds to the direction in which the center axis of the housing barrel extends from the insertion side end toward the housing base, the direction in which the contact element carrier is inserted into the housing barrel, and the direction in which the cable plug connector is inserted into the contact element carrier (or the direction in which the cable plug connector is inserted into the built-in plug connector)) enables at least 50% of the housing barrel to be supported by the support ring.

[0056] In a further embodiment of the socket system according to the invention, the housing base has:

[0057] an opening, the opening being arranged so that when the contact element carrier together with the contact element is at least partially inserted into the housing barrel through the insertion opening to form part of the built-in plug connector, at least a portion of the contact element passes through the opening so that at least the portion of the contact element that passes through the opening of the housing base is present on the outer face of the housing base, and / or

[0058] an element extending around the opening of the housing base, which element engages with a corresponding mating element of the contact element carrier, wherein the contact element carrier can be fixed in the housing barrel by the engagement of the element and the mating element,

[0059] In particular, the following contact areas are impermeable to dust, water, moisture and / or gases, in particular air:

[0060] a contact area formed between the at least partially penetrating contact element and the inner face of the opening of the housing base, and / or

[0061] • A contact area is formed between the component and a mating component.

[0062] The opening in the housing base is adapted to the shape of the contact element (e.g., the opening has the same shape as the contact element and has an area that is the same as or even smaller than the cross-sectional area of ​​the contact element) so that when the contact element is pushed out, the edge area of ​​the opening is pressed aside by means of the soft, flexible material of the housing barrel, without the edge area of ​​the opening being turned inside out. In this way, the inner surface of the opening rests with its entire area on the contact element passing through, so that the press fit formed between the contact element and the inner surface of the opening is impermeable to dust, water, moisture and / or gas, in particular air. The housing barrel of the prior art is made of a harder material, which is why in the case of such a housing barrel, the edge area of ​​the opening of the housing base is turned completely inside out when the contact element passes through. Due to this distortion of the opening, the inner surface of the corresponding opening rests on the contact element passing through only with a small area, which in turn leads to a lack of tightness in the formed press fit. Furthermore, when the edge region of the opening of the housing base is turned inside out, a low pressure increase inside the built-in plug (for example, caused by a short-term temperature fluctuation) is sufficient to push the edge region apart, resulting in a further lack of tightness in the formed press fit. In the case of the built-in plug according to the invention, this sensitivity to pressure fluctuations does not exist, because the inner surface of the corresponding opening is pressed against the contact element passing through with its entire area, whereby the press fit formed between the contact element and the inner surface of the opening is significantly more stable.

[0063] In a further embodiment of the socket system according to the invention,

[0064] The element of the housing base is configured as a wall-like raised portion extending around the opening of the housing base (raised into the interior region of the housing barrel), and the mating element of the contact element carrier is configured as a raised receiving area formed on the contact element carrier for receiving the contact element, or

[0065] The element of the housing base is configured as a recess having an opening of the housing base, and the mating element of the contact element carrier is configured as a raised receiving area formed on the contact element carrier to receive the contact element.

[0066] In a further embodiment of the socket system according to the invention, the collar-like projection has a sealing lip extending around the collar-like projection, wherein the sealing lip

[0067] arranged on a side of the flange-shaped protrusion facing in a direction opposite to the direction in which the contact element carrier is inserted into the insertion opening of the housing barrel, and

[0068] designed to press against the back side of the mounting plate when the support ring is fastened to the back side of the mounting plate by means of the fastening means, in order to provide a contact area between the flange-like protrusion and the back side of the mounting plate which is impermeable to dust, water, moisture and / or gases, in particular air.

[0069] In a further embodiment of the socket system according to the invention, the flange-like projection has a recess matching the hole of the support ring for passing the fastening device, in particular wherein the diameter of the recess at least approximately corresponds to the diameter of the hole.

[0070] In a further embodiment of the socket system according to the invention,

[0071] The support ring has a radially outwardly extending mounting flange, in particular on a face of the support ring that faces in the opposite direction to the direction in which the outer shell cartridge passes through the support ring (in other words: on a face of the support ring from which the outer shell cartridge can be moved towards the support ring to pass through it),

[0072] The mounting flange of the support ring has holes,

[0073] The outer casing can be passed through the support ring so that the outer casing abuts against the mounting flange of the support ring via the flange-like protrusion, and / or

[0074] The radial extent of the flange-like protrusion and the radial extent of the mounting flange are at least approximately the same, in particular, wherein the flange-like protrusion is located on the mounting flange in such a way that they are at least approximately coincident.

[0075] In a further embodiment of the socket system according to the invention,

[0076] The support ring has a barrel surface which extends axially in the direction in which the housing barrel passes through the support ring,

[0077] The hole of the support ring is designed, in particular, as an integral blind hole, which is arranged on the outer side of the barrel surface of the support ring,

[0078] The blind hole is arranged on the outer face of the barrel surface of the support ring in such a way that the blind hole ends flush with a mounting flange on the face of the support ring facing in the direction opposite to the direction in which the outer shell barrel passes through the support ring, in particular, wherein the opening of the blind hole extends within the mounting flange, and / or

[0079] The supporting ring has two, in particular diagonally opposite blind holes, in particular wherein the openings of the two blind holes extend in diagonally opposite corners of the mounting flange.

[0080] In another embodiment of the socket system according to the present invention, the support ring has a recess on the surface of the support ring facing the direction opposite to the direction in which the housing sleeve passes through the support ring, and the raised portion which is correspondingly designed as a mating piece and arranged on the surface of the flange-shaped protrusion facing the direction in which the housing sleeve passes through the support ring (corresponding to the direction in which the contact element carrier is inserted into the insertion opening of the housing sleeve) can be pushed into the recess with precise fit, so that

[0081] The central axis of the outer shell is coaxial with the central axis of the support ring, and / or

[0082] The outer housing cartridge can be fixed to the support ring by a press fit, which can be formed between a raised portion of the flange-like protrusion and a recess of the support ring.

[0083] In a further embodiment of the socket system according to the invention, the housing sleeve has a recess on a surface of the housing sleeve which faces in the opposite direction to the direction in which the contact element carrier is inserted into the insertion opening of the housing sleeve, into which recess a correspondingly formed flange of the contact element carrier can be pushed with an exact fit, so that

[0084] The central axis of the housing barrel is coaxial with the central axis of the contact element carrier,

[0085] The contact element carrier can be fixed to the housing barrel by a press fit, which can be formed between a flange of the contact element carrier and a recess of the housing barrel, and / or

[0086] The insertion-side end of the contact element carrier and the insertion-side end of the housing sleeve form a planar surface, wherein the planar surface is designed to lie against the rear side of the mounting plate.

[0087] In a further embodiment of the socket system according to the invention, the socket system further comprises a second supporting ring, wherein

[0088] the second supporting ring is arranged to be fastened to a front side of the mounting plate by means of the fastening means, wherein the front side of the mounting plate faces the side from which the cable plug connector can be moved towards the built-in plug connector in the state mounted on the mounting plate,

[0089] The second support ring has a support flange extending radially outwards, and / or

[0090] The second support ring has at least one recess, which in particular extends in a corner of the support flange of the second support ring, wherein the second support ring, the outer housing sleeve and the support ring can be arranged on the mounting plate in such a way that:

[0091] o The central axis of the second support ring, the central axis of the outer shell and the central axis of the support ring are coaxial,

[0092] o the recess of the support collar of the second support ring, the recess of the collar-like projection of the outer housing sleeve and the opening of the support ring are arranged substantially congruently one above the other, and / or

[0093] o A fastening device which is arranged to fasten the socket system to the mounting plate and which is moved towards the front side of the mounting plate for this purpose is capable of passing through the recess of the support flange of the second support ring, through the recess of the flange-shaped protrusion of the outer shell cylinder and through the hole of the support ring, in particular, wherein, when the fastening device passes through the recess of the support flange of the second support ring, through the recess of the flange-shaped protrusion of the outer shell cylinder and through the hole of the support ring, the fastening device exerts a corresponding force on the said components of the socket system, thereby pressing the second support ring against the front side of the mounting plate and the flange-shaped protrusion of the outer shell cylinder and the support ring against the back side of the mounting plate, thereby strengthening the fastening of the socket system to the mounting plate.

[0094] In another embodiment of the socket system according to the present invention, the second support ring has a locking mechanism for the cable plug connector for providing a mechanically lockable plug connection, in particular, wherein the internal space of the second support ring designed for the cable plug connector to pass through and / or receive the cable plug connector has a mechanical closing element, which is provided to achieve the engagement of the claws of the cable plug connector connected to the claw slide in the closing element of the second support ring and thereby prevent the cable plug connector from rotating in a loosening direction opposite to the screwing-in direction, and the mechanical closing element is part of the locking mechanism of the second support ring, which part can be actuated by the displacement of the claw slide on the cable plug connector.

[0095] In a further embodiment of the socket system according to the invention, a separation element is arranged on the outer surface of the housing base, wherein the separation element is designed in particular to electrically insulate the part of the contact element that passes through the opening in the housing base and is present on the outer surface of the housing base from other contact elements, in particular to prevent it from coming into contact with them.

[0096] The invention also relates to an internal plug connector for forming a plug connection, in particular a mechanically lockable plug connection, with a cable plug connector, which matches the internal plug connector as a mating piece and can be inserted into an opening of the internal plug connector, wherein a signal, in particular a power supply signal, a digital signal or an analog signal, can be transmitted by forming a plug connection between the internal plug connector and the cable plug connector, wherein the internal plug connector has:

[0097] at least one contact element, wherein the at least one contact element is arranged to make contact by forming a plug connection with a contact element counterpart on the cable plug connector and thus provide for the transmission of a signal via the plug connection, and

[0098] a contact element carrier, wherein the at least one contact element is received by the contact element carrier, wherein

[0099] The built-in plug connector also has a socket system according to one of the above-mentioned aspects / embodiments, wherein

[0100] The housing barrel passes through the support ring until it abuts against the flange-like protrusion, and

[0101] The contact element carrier together with at least one contact element is at least partially inserted through the insertion opening into the housing barrel of the socket system.

[0102] The at least one contact element is received here, for example, by the contact element carrier in such a way that a first sub-region of the contact element is inserted into the contact element carrier and fixed there, for example by interlocking or snapping into place, while a second sub-region of the contact element protrudes from a receiving region of the contact element carrier. Since the contact element carrier is inserted into the housing barrel so that the receiving region abuts against the housing base or a cavity formed by a wall-shaped raised portion on the housing base, the second sub-region of the contact element protruding from the receiving region is pushed out of the housing barrel through an opening of the housing base. It can therefore also be stated that at least one contact element is at least partially received by the contact element carrier and is therefore at least partially fixed inside the built-in plug connector.

[0103] In a further embodiment of the built-in plug connector according to the invention, the contact element carrier has a locking mechanism for the cable plug connector for providing a mechanically lockable plug connection, in particular, wherein the inner space of the contact element carrier formed for receiving the cable plug connector

[0104] a mechanical retaining element which is provided for preventing an axial movement of a retaining element mating part on the cable plug connector in the direction in which the cable plug connector is to be pulled out, the mechanical retaining element being in the form of a first part of a locking mechanism which can be actuated by rotating the cable plug connector in the screwing-in direction in a state in which the cable plug connector is at least partially pushed into the interior space, and / or

[0105] a mechanical closing element which is provided in order to achieve an engagement of a claw of the cable plug connector connected to the claw slide in the closing element and thus to prevent a rotation of the cable plug connector in a loosening direction opposite to the screwing-in direction, the mechanical closing element being in the form of a second part of a locking mechanism which can be actuated by displacement of the claw slide on the cable plug connector.

[0106] In a further embodiment of the built-in plug connector according to the invention, the built-in plug connector is arranged to form a mechanically lockable plug connection with a cable plug connector.

[0107] The cable plug connector is a 3-pole power plug connector type, in particular, where the built-in plug connector is designed as a 3-pole power chassis socket, or

[0108] ·Forms a mechanically lockable plug connection with the following cable plug connector types

[0109] o IEC,

[0110] o XLR,

[0111] o RJ45,

[0112] o HDMI,

[0113] o USB, or

[0114] o RCA,

[0115] In particular, the built-in plug connector is designed as a chassis socket which is adapted to the type of cable plug connector.

[0116] In a further embodiment of the built-in plug connector according to the invention, the retaining element is arranged and configured such that the retaining element mating piece engages behind the retaining element after the first part of the locking mechanism has been actuated.

[0117] In a further embodiment of the built-in plug connector according to the invention,

[0118] the mechanical retaining element is designed as a groove arrangement, wherein the groove of the groove arrangement first extends axially and thus serves in particular as a key counterpart of a key element of the cable plug connector and then extends perpendicularly to the axis or slightly inclined to the perpendicular to the axis and serves as a retaining part in this region, wherein the retaining element counterpart is designed as a projection arrangement, which is inserted into the groove arrangement when the plug connection is formed and is prevented from being pulled out axially by the region of the groove arrangement extending perpendicularly to the axis or slightly inclined to the perpendicular to the axis, or

[0119] The mechanical retaining element is designed as a projection device and the retaining element counterpart is designed as a groove device, wherein the groove of the groove device first extends axially in the inserted state and thus serves as a key element for the projection device, in particular as a key counterpart, and then extends perpendicularly to the axis or slightly inclined to a perpendicular to the axis, wherein, when a plug-in connection is formed, the area of ​​the groove device extending perpendicularly to the axis or slightly inclined to a perpendicular to the axis engages behind the projection device and the cable plug connector is thus prevented from being pulled out axially.

[0120] In other words, the groove of the corresponding element initially extends axially and then becomes a transverse groove, i.e. a groove designed to be at least substantially L-shaped. A projection of the corresponding element, which is designed as a mating piece, initially penetrates the axial part of the at least substantially L-shaped groove and then engages in the transverse groove as soon as a rotational movement, e.g. a rotational movement of the cable plug connector having the projection, is carried out. Thus, in the case of a movement in the axial direction or opposite to the axial direction, i.e., for example when the cable plug connector is pushed in or pulled out, the projection abuts against the transverse groove, thus, for example, preventing the cable plug connector from being pulled out in an unintended manner and thus preventing the plug connection from being disconnected in an unintended manner.

[0121] In a further embodiment of the built-in plug connector according to the invention, the retaining element is arranged and provided with an inclined profile so that by actuating the first part of the locking mechanism and during actuation of the first part, the retaining element mating part moves along the inclined profile until the retaining element mating part encounters the rotation stop and reaches the end insertion position of the cable plug connector in the interior space.

[0122] In another embodiment of the built-in plug connector according to the present invention, the internal space has a mechanical key fitting, which is configured to interact with a key element of the cable plug connector that matches the mechanical key fitting, so that the cable plug connector can be pushed into the built-in plug connector only in a specific rotational orientation predetermined by the key fitting.

[0123] In a further embodiment of the built-in plug connector according to the invention, the contact element carrier is produced from the same material as the supporting ring.

[0124] In a further embodiment of the built-in plug connector according to the invention, the flange of the contact element carrier is made of the same material as the contact element carrier, in particular wherein the material of the contact element carrier and the flange of the contact element carrier is harder than the material of the housing barrel.

[0125] In another embodiment of the built-in plug connector according to the invention, the flange of the contact element carrier consisting of a harder material is arranged to form a stop when a planar surface formed by the insertion-side end of the contact element carrier and the insertion-side end of the housing sleeve is abutted against the back side of the mounting plate and when the socket system and the contact element carrier are fastened to the back side of the mounting plate by means of a fastening device, so that deformation of the housing sleeve consisting of a softer material can be prevented by the contact pressure generated by the fastening device.

[0126] In a further embodiment of the built-in plug connector according to the invention, the flange of the contact element carrier has a recess which is in particular open towards the outer face of the flange and matches the hole of the support ring and / or the recess of the flange-like protrusion for the passage of the fastening device, in particular, wherein the diameter of the recess of the flange of the contact element carrier at least approximately corresponds to the diameter of the hole of the support ring and / or the recess of the flange-like protrusion.

[0127] In a further embodiment of the built-in plug connector according to the invention, the flange of the contact element carrier has two, in particular diagonally opposite, recesses for the corresponding passage of the fastening device, in particular, wherein the recesses of the flange of the contact element carrier extend in diagonally opposite corners of the flange of the contact element carrier.

[0128] The contact element carrier is fixed in the housing sleeve, the housing sleeve is fixed in the support ring, and / or in the case of the built-in plug connector according to the invention, the contact element is fixed in the contact element carrier by a correspondingly constructed press fit (e.g., a press fit between an element and a mating element, a press fit between a recess of a support ring and a raised portion of a flange-shaped protrusion, or a press fit between a flange of the contact element carrier and a recess of the housing sleeve) or a clamping mechanism (e.g., between the contact element carrier, in particular the accommodating area of ​​the contact element carrier and the contact element) in combination with the contact pressure applied by the fastening device. Therefore, in the illustrated embodiment of the built-in plug connector according to the invention, the use of adhesives or other fixing devices such as additional clamps, screws, etc. can be omitted, so that the built-in plug connector according to the invention can be simply assembled.

[0129] Since the housing sleeve consists of a soft, flexible material which is slightly pressed aside when the component is pushed in, but due to the flexibility only deforms elastically and thus fits tightly on the component, the press fit between the soft housing sleeve and the corresponding component, in particular the press fit between the inner face of the opening of the housing base and the contact element passing through, is already impermeable to dust, water, moisture and / or gas, in particular air, even without the need for additional use of sealing means, such as adhesives, sealing pastes, sealing rings (e.g. O-rings), etc. Thus, the establishment of impermeability with respect to dust, water, moisture and / or gas, in particular air, is simplified by the socket system according to the invention or the built-in plug connector according to the invention, so that it can be used outdoors without any additional effort, the risk of short circuits is reduced, and / or specific standards are met. BRIEF DESCRIPTION OF THE DRAWINGS

[0130] The socket system according to the invention or the built-in plug connector according to the invention will be described in detail below purely by way of example based on the exemplary embodiments schematically shown in the figures. Identical elements are represented by the same reference numerals in the figures. The described embodiments are generally not illustrated to scale, and they should not be understood as implying limitations. In detail, in the drawings:

[0131] Figure 1A and Figure 1B : A perspective view showing an exemplary embodiment of an internal plug connector according to the invention in an exploded view, the internal plug connector having an exemplary embodiment of a socket system according to the invention,

[0132] Figure 2A and Figure 2B : shows a perspective view of an exemplary embodiment of an internal plug connector according to the invention with an exemplary embodiment of a socket system according to the invention in an assembled state,

[0133] Figure 3 : shows a perspective view of an exemplary embodiment of an internal plug connector according to the invention with an exemplary embodiment of a socket system according to the invention in an assembled state,

[0134] Figure 4 : A schematic diagram showing the installation of an exemplary embodiment of a built-in plug connector according to the present invention on a mounting board. DETAILED DESCRIPTION

[0135] Figure 1A and Figure 1BA perspective view of an exemplary embodiment of an inventive built-in plug connector 1 with an exemplary embodiment of an inventive socket system 2 is shown in an exploded view.

[0136] In the exemplary embodiment shown, the socket system 2 has a housing barrel 3 and a support ring 4. Here, the housing barrel 3 has an insertion opening 6 at its insertion-side end 5, a (circular) housing base 8 opposite the insertion-side end 5, and a cylindrical housing barrel body 9 extending from the insertion opening 6 to the housing base 8, through which the contact element carrier 7 can be at least partially inserted into the housing barrel 3.

[0137] Furthermore, the housing barrel 3 has a flange-like protrusion 10 and a recess 13 at the insertion opening 6, the flange-like protrusion 10 extending in the radial direction and the sealing lip 11 extending around the flange-like protrusion 10, the recess 13 being arranged on a face 12 of the housing barrel 3 facing in a direction opposite to the direction in which the contact element carrier 7 is inserted into the insertion opening 6 of the housing barrel 3. The recess 13 is arranged to receive a flange 14 of the contact element carrier 7 with an exact fit, and extends within the flange-like protrusion 10 to two diagonally opposite corners 15 of the flange-like protrusion 10, in which recesses 16 for the passage of fastening means are arranged.

[0138] A raised portion 18 is arranged on the face 17 of the flange-shaped projection 10 facing the direction in which the housing sleeve 3 passes through the support ring 4. The raised portion 18 is provided for precise insertion into a correspondingly designed fitting recess 19 of the support ring and also extends to two diagonally opposite corners 15 of the flange-shaped projection 10, in which recesses 16 for the passage of fastening means are arranged. In the exemplary embodiment shown, the raised portion 18 of the flange-shaped projection 10 is formed by the recess 13 of the flange-shaped projection 10.

[0139] In the exemplary embodiment shown, three openings 20 for the respective passage of at least a part of three contact elements 21 received by the contact element carrier 7 extend in the housing base 8 .

[0140] In the exemplary embodiment shown, the housing barrel 3 has a separation element 22 on the surface 17 of the housing base 8 facing the direction in which the housing barrel 3 passes through the support ring 4 (in other words: on the outer surface 17 of the housing base 8), and the separation element 22 is composed of three separation walls starting from a common point. The separation element separates those parts of the three contact elements 21 that pass through the three openings 20 in the housing base 8 and are present on the outer surface 17 of the housing base 8 from each other, making it impossible for the contact element 21 to contact other conductive components (for example, a stranded wire provided for another contact element) in an unintended manner, which contact may lead to a short circuit in certain circumstances.

[0141] The support ring 4 has a mounting flange 23, which has at least approximately the same radial extent as the flange-like protrusion 10, which is why, when the exemplary embodiment of the built-in plug connector 1 shown is assembled, the mounting flange 23 and the flange-like protrusion 10 are at least approximately aligned to each other. The support ring 4 also has a cylindrical barrel surface 24, which extends axially in the direction in which the outer shell barrel 3 passes through the support ring 4, wherein the inner diameter (or radial extent / size) of the support ring barrel 24 is adapted to the diameter (or radial extent / size) of the cylindrical outer shell barrel 3, in particular to the diameter (or radial extent / size) of the cylindrical outer shell barrel 9, so that the outer shell barrel 3 passing through the support ring 4 in the passing direction is pressed against the inner surface 27 of the support ring barrel 24 by the outer surface 26 of the outer shell barrel 9, so that the support ring 4 is supported on the outer shell barrel 3.

[0142] In the illustrated exemplary embodiment of the built-in plug connector 1 according to the invention, the flange-shaped protrusion 10 of the housing barrel 3 has a sealing lip 11 extending around the flange-shaped protrusion 10, wherein, when the planar surface 28 formed by the contact element carrier 7 and the housing barrel 3 rests against the back side of the mounting plate, the sealing lip 11 is pressed against the back side of the mounting plate, thereby sealing the contact area between the flange-shaped protrusion 10 and the back side of the mounting plate against dust, water, moisture and / or gas, in particular air.

[0143] In the embodiment shown, the support ring 4 has two blind holes 30, which are formed in one piece and are arranged diagonally opposite each other on the outer face 29 of the barrel surface 24 of the support ring 4, wherein the blind hole 30 is designed at least primarily as a hollow cylinder open on one side, the barrel surface of which (however, the (blind) hole does not necessarily have a cylindrical or at least approximately cylindrical barrel surface) is at least partially formed by the barrel surface 24 of the support ring 4. The blind holes 30 are arranged at two diagonally opposite corners 31 of the mounting flange 23 and terminate flush with the mounting flange 23 at a face 32 of the support ring 4 that faces in the opposite direction to the direction in which the outer housing barrel 3 passes through the support ring 4, wherein the openings of the blind holes 30 extend in the diagonally opposite corners 31 of the mounting flange 23, wherein the two openings of the blind holes 30 are located in the recesses 19 of the mounting flange 23, which extend to the respective two diagonally opposite corners 31 of the mounting flange 23.

[0144] In each case, on the surface 17 of the mounting flange 23 facing the direction in which the housing barrel 3 passes through the support ring 4, a support structure 34 is arranged at the other two diagonally opposite corners 33 of the mounting flange 23 where no blind holes 30 are arranged, and the support structure 34 has a triangular shape, wherein the corresponding support structure 34 extends to the barrel surface 24 of the support ring 4 and is also arranged there. The advantage of this embodiment is that the support ring 4, in particular the mounting flange 23 of the support ring 4, will not be twisted even when the fastening device is firmly tightened, and when the socket system 2 or the built-in plug connector 1 according to the invention is in a state of being installed on the back of the mounting plate, the desired support effect is also ensured.

[0145] In the embodiment shown, the housing base 8 has three elements 35, each of which is designed as a wall-like projection (rising into the interior space of the housing barrel) extending around one of the three openings 20 of the housing base 8. A corresponding mating element 36 of the contact element carrier 7 engages in each case in one of the cavities formed by the wall-like projection 35, the mating element 36 being constructed as a raised receiving area designed to receive the contact element 21 on the contact element carrier 7, wherein the corresponding wall-like projection 35 presses against the corresponding mating element 36, and the contact area formed thereby (in other words, also a press fit) fixes the contact element carrier 7 in the housing barrel 3 and is additionally impermeable to dust, water, moisture and / or gases, in particular air.

[0146] Figure 2A and Figure 2B A perspective view of an exemplary embodiment of an inventive built-in plug connector 1 with an exemplary embodiment of a socket system 2 according to the invention is shown in the assembled state. Figure 2AThe insertion-side end 37 of the contact element carrier 7 and the insertion-side end 5 of the housing sleeve 3 are shown, wherein the contact element carrier 7 is pushed into the housing sleeve 3 so that the flange 14 of the contact element carrier 7 engages with an exact fit in a recess 13 arranged on a face 12 of the housing sleeve 3 facing in the direction opposite to the direction in which the contact element carrier 7 is inserted into the insertion opening 6 of the housing sleeve 3 (or alternatively: on a face 12 of the housing sleeve 3 that is provided as a mounting board face for mounting a socket system or an internal plug connector on a mounting board), and a plane surface 28 is formed there. This plane surface 28 formed on the face of the mounting board face that is provided as a mounting board face for mounting a socket system or an internal plug connector on a mounting board can then be applied to the back side of the mounting board, so that the peripheral sealing lip 11 of the housing sleeve 3 is pressed against the back side of the mounting board. The housing sleeve 3 is further passed through the support ring 4, so that the flange-shaped projection 10 of the housing sleeve 3 abuts against the mounting flange 23 of the support ring 4 and the raised portion 18 of the flange-shaped projection 10 engages with a precise fit in a recess 19 arranged on a face 32 of the support ring 4 that faces in the opposite direction to the direction in which the housing sleeve 3 passes through the support ring 4. The flange-shaped projection 10 is at least approximately congruently located on the mounting flange 23 here, and the contact element carrier 7, the housing sleeve 3 and the support ring 4 are arranged so that the center axis of the contact element carrier 7, the center axis of the housing sleeve 3 and the center axis of the support ring 4 are coaxial.

[0147] In the case of an arrangement of the contact element carrier 7, the housing barrel 3 and the supporting ring 4 as in the illustrated exemplary embodiment of the built-in plug connector 1 according to the invention, the two recesses 38 of the flange 14 of the contact element carrier 7, the two recesses 16 of the flange-like projection 10 and the two openings of the blind hole 30 of the supporting ring 4 are present in diagonally opposite corners 15, 31, 39 of the respective components 3, 4, 7 in such a way that in each case one of the two recesses 38 of the flange 14 of the contact element carrier 7, one of the two recesses 16 of the flange-like projection 10 and one of the two openings of the blind hole 30 of the supporting ring 4 are arranged approximately uniformly one above the other, wherein the diameters of the recess 38 of the flange 14 of the contact element carrier 7, the diameter of the opening of the blind hole 30 of the supporting ring 4 and the diameter of the recess 16 of the flange-like projection 10 are at least approximately the same.

[0148] If the plane surface 28 is now placed against the back side of the mounting plate, in particular via the circumferential sealing lip 11 of the housing sleeve 3, and a fastening device, for example a screw, is passed through the mounting plate from the front side until the fastening device engages in the blind hole 30, the fastening device also automatically passes through the recess 38 of the flange 14 of the contact element carrier 7 and the recess 16 of the flange-shaped projection 10. If the fastening device is subsequently tightened, the support ring 4 is pulled toward the back side of the mounting plate, and the plane surface 28, in particular the sealing lip 11 of the housing sleeve 3, is pressed against the back side of the mounting plate. Because the outer shell barrel 3 is made of a soft material, the flange-shaped protrusion 10 of the outer shell barrel 3 is pressed against the back of the mounting plate by the contact pressure applied by the fastening device, wherein the flange-shaped protrusion 10 and the sealing lip 11 are slightly compressed, so that the contact surface of the built-in plug connector 1 according to the present invention with the back of the mounting plate is impermeable to dust, water, moisture and / or gas, especially air, and even without the use of additional sealing devices, such as adhesives, sealing pastes, sealing rings (such as O-rings), etc. As described above, the flange-shaped protrusion 10 of the outer shell barrel 3 is prevented from being deformed too much, especially around the recess 16 of the flange-shaped protrusion 10, due to the fastening device being too tight, by the stopper formed by the hard contact element carrier 7.

[0149] exist Figures 1A to 2B In the exemplary embodiment shown, the contact element carrier 7 is designed so that the built-in plug connector 1 according to the invention is a male built-in plug connector (also called a male device plug). For this purpose, the inner space 40 of the contact element carrier 7, which is designed to receive the cable plug connector, has a mechanical retaining element 41 in the form of a groove and a mechanical closing element 42 which is provided as a claw of a claw slide on the cable plug connector. Before fastening the built-in plug connector 1 according to the invention, the insertion opening 43 provided for inserting the cable plug connector into the built-in plug connector 1 is aligned with the corresponding mounting plate recess.

[0150] Figure 3A perspective view of an exemplary embodiment of an in-built plug connector 1 according to the invention is shown, which has an exemplary embodiment of a socket system 2 according to the invention in an assembled state. In this exemplary embodiment, the contact element carrier 7 is designed so that the in-built plug connector 1 according to the invention is a female in-built plug connector (also called a female device plug). In the female in-built plug connector 1 shown, a support element 52 is arranged in the contact element carrier interior space 40, which rises from the contact element carrier interior space 40 in a direction opposite to the direction 12 in which the cable plug connector is inserted into the contact element carrier 7, and the support element has a mechanical retaining element 41 in the form of a protrusion. Since the contact element carrier interior space 40 of the female in-built plug connector 1 in particular has to receive or accommodate the support element 52 in addition to the cable plug connector, the diameter of the contact element carrier 7 of the female in-built plug connector 1 according to the invention is larger than that of the male in-built plug connector 1 according to the invention. Figures 1A to 2B The contact element carrier 7 shown has a large diameter (in other words: a larger radial extent / size). In order for this enlarged contact element carrier 7 to be received by the socket system 2 according to the invention, the housing barrel 3 and the support ring 4 must in each case also be designed with an enlarged diameter or with an enlarged radial extent. However, since the built-in plug connector 1 according to the invention (in terms of spatial extent, in particular in terms of radial extent) needs to have a certain standard size, such as the so-called D dimension, in the embodiment shown, the barrel of the outer surface of the contact element carrier 7, the barrel of the housing barrel 3 and the barrel 24 of the support ring 4 are not configured in a cylindrical shape, because otherwise the radial extent of the built-in plug connector 1 according to the invention would exceed the desired size. Instead, the barrel surface of the individual components 3, 4, 7 is flattened on at least one face, in particular on two diametrically opposite faces, so that the radius on the plane surface 51 formed thereby is reduced (for example, the radial extent of the support ring 4 ends flush with the radial extent of the flange-shaped protrusion 10 of the housing barrel 3), thereby limiting the radial extent of the built-in plug connector 1 according to the invention and thus ensuring compliance with the desired standard dimensions, in particular the D dimension. In other words, the barrel surface of the individual components 3 , 4 , 7 extends in each case along a secant line through the respective barrel surface, so that a planar surface 51 is formed on this face.

[0151] It is generally understood that the terms "cylindrical body" and "cylindrical body" are not limited to circular cylinders, but refer to all types of cylinders, in particular ellipsoidal cylinders or circular cylinders, in which at least one face is flattened or in which at least one sub-area of ​​the barrel surface is designed with an enlarged or reduced radius. Furthermore, it is understood that the support ring 4 does not necessarily have to have the shape of a circular ring. The term support ring is also to be understood as an annular body, in which, for example Figure 3As shown, at least a sub-region of the circular circumference or a sub-region of the barrel surface deviates from the cylindrical shape. Therefore, the support ring 4 can also have the shape of a hexagonal nut or a hollow cuboid, for example.

[0152] In the embodiment of the built-in plug connector 1 according to the invention shown, the inner space 40 of the contact element carrier 7 designed to receive the cable plug connector does not have a mechanical closure element 42, which is arranged as a claw of a claw slide on the cable plug connector. In the embodiment shown, the closure element 42 is arranged to be arranged on a correspondingly constructed second support ring 54.

[0153] Figure 4 The schematic diagram of the installation of an exemplary embodiment of the built-in plug connector 1 according to the present invention on a mounting plate 53 is shown, wherein the socket system 2 and the built-in plug connector 1 assembled therefrom have a second support ring 54 in the embodiment shown. The second support ring 54 is moved from the front toward the mounting plate 53 so that the second support ring 54 surrounds the recess of the mounting plate 53 with its opening, which is provided for the cable plug connector to pass through. In addition, the second support ring 54 also has a support flange, wherein the recess provided for the fastening device to pass through extends in two opposite corners of the support flange of the second support ring. When the illustrated embodiment of the built-in plug connector 1 according to the invention is correctly installed, on the one hand, the center axis of the housing barrel 3, the center axis of the support ring 4 and the center axis of the second support ring 4 are coaxial, and on the other hand, the recess of the support flange of the second support ring 54, the recess 38 of the flange 14 of the contact element carrier 7, the recess 16 of the flange-shaped protrusion 10 and the opening of the blind hole 30 of the support ring 4 are approximately uniformly superimposed on each other, wherein the diameters of the recess of the support flange of the second support ring 54, the diameter of the recess 38 of the flange 14 of the contact element carrier 7, the diameter of the opening of the blind hole 30 of the support ring 4 and the diameter of the recess 16 of the flange-shaped protrusion 10 are at least approximately the same. If the fastening means 55 (e.g., screws 55) are then passed from the front through the recess of the support flange of the second support ring 54, the fastening means 55 are correspondingly also passed through the recess 38 of the flange 14 of the contact element carrier 7, the recess 16 of the flange-shaped protrusion 10 and the opening of the blind hole 30 of the support ring 4 until the fastening means 55 then engages in the blind hole 30 and the components 3, 4, 7, 54 are thereby drawn together and fastened. Since the shown embodiment of the built-in plug connector 1 according to the invention is supported on the mounting plate 53 from both the front and rear sides and the fastening means 55 pass through all the components 3, 4, 7, 54 from the front to the rear sides, the fastening of the built-in plug connector 1 on the mounting plate 53 is strengthened.

[0154] It should be understood that these illustrated figures only schematically show possible exemplary embodiments. The different methods can also be combined with each other and with methods of the prior art.

Claims

1. A socket system (2) configured to receive a contact element carrier (7) and at least one contact element (21) received in the contact element carrier (7) to form a part of a built-in plug connector (1), wherein The socket system (2) comprises a housing sleeve (3), which is designed such that the contact element carrier (7) can be at least partially inserted into the housing sleeve (3) through an insertion opening (6) at an insertion-side end (5) of the housing sleeve (3), wherein a flange-like projection (10) is arranged at the insertion opening (6) of the housing sleeve (3), and the socket system (2) is arranged to be applied and fastened by the flange-like protrusion (10) of the housing cartridge (3) against the back side of a mounting plate (53), It is characterized in that The outer shell sleeve (3) is made of a material with a Shore A hardness in the range of 60 to 100, and the socket system (2) also has a support ring (4) which is made of a harder material than the outer shell sleeve (3). in: the outer shell (3) can pass through the support ring (4) until the outer shell (3) abuts against the support ring (4) via the flange-shaped protrusion (10), so that when mounted on the mounting plate (53), the flange-shaped protrusion (10) is arranged between the mounting plate (53) and the support ring (4), and The support ring (4) has a hole (30), in particular a blind hole, which is designed so that the support ring (4) is fastened to the back side of the mounting plate (53) by means of a fastening device (55), which passes through the mounting plate (53) from the front side of the mounting plate (53) and engages in the hole (30).

2. The socket system (2) according to claim 1, characterized in that The material of the support ring (4) has a Shore D hardness in the range of 60 to 100, and / or The Shore D hardness of the material of the contact element carrier (7) is in the range of 60 to 100.

3. The socket system (2) according to claim 1 or 2, characterized in that The material of the housing sleeve (3), the material of the support ring (4) and / or the material of the contact element carrier (7) at least mainly consists of plastic, in particular, wherein the plastic is a thermoplastic, in particular one of the following thermoplastics: Polypropylene, Polyethylene, Polyurethane, or Polystyrene.

4. The socket system (2) according to any one of claims 1 to 3, characterized in that The housing cylinder (3), the support ring (4) and / or the contact element carrier (7) are manufactured by an injection molding method, a 3D printing method, a pressing method or a vulcanization method.

5. The socket system (2) according to any one of claims 1 to 4, characterized in that The outer shell (3) also has: a housing base (8) located at a rear end portion of the housing tube (3) opposite to the insertion end portion (5), and a housing barrel (9) extending from the insertion opening (6) to the housing base (8), The radial extent of the support ring (4) and the radial extent of the outer shell barrel (9) match each other, so that when the outer shell barrel (3) passes through the support ring (4), the outer shell barrel (9) is pressed against the inner surface (27) of the support ring (4) and supported thereby, In particular, the axial extension range of the support ring (4) in the direction in which the outer shell (3) passes through the support ring (4) enables at least 50% of the outer shell body (9) to be supported by the support ring (4).

6. The socket system (2) according to claim 5, characterized in that The housing base (8) has: an opening (20) arranged so that when the contact element carrier (7) together with the contact element (21) is at least partially inserted into the housing barrel (3) through the insertion opening (6) to form a part of the built-in plug connector, at least a part of the contact element (21) passes through the opening (20) so that at least the part of the contact element (21) that passes through the opening (20) of the housing base (8) is present on the outer surface (44) of the housing base (8), and / or an element (35) extending around the opening of the housing base, the element (35) engaging with a corresponding mating element (36) of the contact element carrier (7), wherein the contact element carrier (7) can be fixed in the housing barrel (3) by the engagement of the element (35) and the mating element (36), In particular, the following contact areas are impermeable to dust, water, moisture and / or gases, in particular air: a contact area formed between the contact element (21) passing at least partially through and the inner face of the opening (20) of the housing base (8), and / or • A contact area is formed between the element (35) and the mating element (36).

7. The socket system (2) according to any one of claims 1 to 6, characterized in that The flange-like protrusion (10) has a sealing lip (11) extending around the flange-like protrusion (10), wherein the sealing lip (11) arranged on a surface (12) of the flange-shaped protrusion (10) facing in a direction opposite to the direction in which the contact element carrier (7) is inserted into the insertion opening (6) of the housing sleeve (3), and designed to press against the back side of the mounting plate (53) when the support ring (4) is fastened to the back side of the mounting plate (53) by means of the fastening means (55) so as to provide a contact area between the flange-like protrusion (10) and the back side of the mounting plate (53) which is impermeable to dust, water, moisture and / or gases, in particular air.

8. The socket system (2) according to any one of claims 1 to 7, characterized in that The flange-like protrusion (10) has a recess (16) matching the hole of the support ring (4), the recess (16) being used for the passage of the fastening device (55), in particular, wherein the diameter of the recess (16) at least approximately corresponds to the diameter of the hole (30).

9. The socket system (2) according to any one of claims 1 to 8, characterized in that The support ring (4) has a radially outwardly extending mounting flange (23), in particular on a surface (32) of the support ring (4) that faces in a direction opposite to the direction in which the outer shell (3) passes through the support ring (4); The mounting flange (23) of the support ring (4) has the hole (30), The outer casing (3) can pass through the support ring (4) so ​​that the outer casing (4) abuts against the mounting flange (23) of the support ring (4) via the flange-like protrusion (10), and / or The radial extent of the flange-like protrusion (10) and the radial extent of the mounting flange (23) are at least approximately the same, in particular, wherein the flange-like protrusion (10) is located at least approximately congruently on the mounting flange (23).

10. The socket system (2) according to any one of claims 1 to 9, characterized in that The support ring (4) has a recess (19) on a surface (32) of the support ring (4) facing in a direction opposite to the direction in which the outer casing (3) passes through the support ring (4), and a raised portion (18) designed as a matching piece and arranged on a surface of the flange-shaped protrusion (10) facing in a direction in which the outer casing (3) passes through the support ring (4) can be pushed into the recess (19) with precise fit, so that: The central axis of the outer shell (3) and the central axis of the support ring (4) are coaxial, and / or The outer shell cartridge (3) can be fixed to the support ring (4) by means of a press fit, which can be formed between the raised portion (18) of the flange-like protrusion (10) and the recess (19) of the support ring (3).

11. The socket system (2) according to any one of claims 1 to 10, characterized in that The housing sleeve (3) has a recess (13) on a surface (12) of the housing sleeve (3) facing in a direction opposite to the direction in which the contact element carrier (7) is inserted into the insertion opening (6) of the housing sleeve (3), and a flange (14) of the contact element carrier (7) formed as a corresponding mating piece can be pushed into the recess (13) in an accurately fitting manner, so that The central axis of the outer shell (3) and the central axis of the contact element carrier (7) are coaxial, The contact element carrier (7) can be fixed to the housing barrel (3) by means of a press fit, the press fit being formed between the flange (14) of the contact element carrier (7) and the recess (13) of the housing barrel (3), and / or The insertion-side end (37) of the contact element carrier (7) and the insertion-side end (5) of the housing sleeve (3) form a plane surface (28), wherein the plane surface (28) is designed to abut against the back side of the mounting plate (53).

12. The socket system (2) according to any one of claims 1 to 11, characterized in that The socket system (2) also has a second support ring (54), wherein the second supporting ring (54) is arranged to be fastened to the front side of the mounting plate (53) by means of the fastening means (55), wherein the front side of the mounting plate (53) faces the side from which the cable plug connector can be moved towards the built-in plug connector (1) in a state of being mounted on the mounting plate (53), The second support ring (54) has a support flange extending radially outwards, and / or The second support ring (54) has at least one recess, which in particular extends in a corner of the support flange of the second support ring (54), in particular, wherein the second support ring (54), the outer housing sleeve (3) and the support ring (4) can be arranged on the mounting plate (53) such that: o the central axis of the second support ring (54), the central axis of the outer shell (3) and the central axis of the support ring (4) are coaxial, o the recess of the support flange of the second support ring (54), the recess of the flange-like protrusion (10) of the outer shell (3) and the hole (30) of the support ring (4) are substantially aligned with each other, and / or o The fastening device (55) is provided for fastening the socket system (2) to the mounting plate (53) and for this purpose is moved towards the front side of the mounting plate (53) and can be passed through the recess of the support flange of the second support ring (54), through the recess of the flange-shaped protrusion (10) of the outer shell cartridge (3) and through the hole (30) of the support ring (4), in particular, when the fastening device (55) passes through the recess of the support flange of the second support ring (54), through the recess of the flange-shaped protrusion (10) of the outer shell cartridge (3) When the flange-shaped protrusion (10) of the outer shell (3) is inserted into the recess and passes through the hole (30) of the support ring (4), the fastening device (55) exerts a corresponding force on the components (3, 4, 54) of the socket system (2), thereby pressing the second support ring (54) against the front side of the mounting plate (53), and the flange-shaped protrusion (10) of the outer shell (3) and the support ring (4) against the back side of the mounting plate (53), thereby strengthening the fastening of the socket system (2) to the mounting plate (53).

13. A built-in plug connector (1) for forming a plug connection, in particular a mechanically lockable plug connection, with a cable plug connector, the cable plug connector matching the built-in plug connector (1) as a mating piece and the cable plug connector being insertable into an opening (43) of the built-in plug connector (1), wherein by forming a plug connection between the built-in plug connector (1) and the cable plug connector, a signal, in particular a power supply signal, a digital signal or an analog signal, can be transmitted, wherein the built-in plug connector (1) has: at least one contact element (21), wherein the at least one contact element (21) is arranged to make contact by forming a plug connection with a contact element counterpart on the cable plug connector and thus provide for the transmission of a signal via the plug connection, and a contact element carrier (7), wherein the at least one contact element (21) is received by the contact element carrier (7), It is characterized in that The built-in plug connector (1) also has a socket system (2) according to any one of claims 1 to 12, wherein The outer casing (3) passes through the support ring (4) until the support ring (4) abuts against the flange-like protrusion (10), and A contact element carrier (7) together with at least one contact element (21) is at least partially inserted through an insertion opening (6) into the housing sleeve (3) of the socket system (2).

14. The built-in plug connector (1) according to claim 13, characterized in that The contact element carrier (7) has a locking mechanism for the cable plug connector for providing a mechanically lockable plug connection, in particular, an inner space (40) of the contact element carrier (7) formed for receiving the cable plug connector a mechanical retaining element (41) which is provided for preventing an axial movement of a retaining element mating piece on the cable plug connector in the direction in which the cable plug connector is to be pulled out, the mechanical retaining element (41) being in the form of a first part of a locking mechanism which can be actuated by rotating the cable plug connector in the screwing-in direction when the cable plug connector is at least partially pushed into the inner space (40), and / or a mechanical closing element (42) which is provided in order to achieve engagement of a claw of the cable plug connector connected to a claw slide in the closing element (42a) and thereby prevent a rotation of the cable plug connector in a loosening direction opposite to the screwing-in direction, the mechanical closing element (42) being in the form of a second part of the locking mechanism which can be actuated by displacement of the claw slide on the cable plug connector.

15. The built-in plug connector (1) according to claim 13 or 14, characterized in that The flange (14) of the contact element carrier (7) has two, in particular diagonally opposite, recesses (38) for the corresponding passage of the fastening device (55), in particular, wherein the recesses (38) of the flange (14) of the contact element carrier (7) extend within diagonally opposite corners (39) of the flange (14) of the contact element carrier (7).

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