Elastic plug-in connector

Abstract

The invention relates to a plug connector (1) for producing a hose and / or pipe connection, having a base body (2) and a receiving body (4), each having an insertion channel (6, 8) for a plug-in part (10) to be assembled in an insertion direction (E), and having a retaining part (28) which is arranged in a receiving opening (26) of the receiving body (4) and which, in a locking position, blocks the plug-in part (10) to be assembled against the insertion direction (E). The receiving body (4) is connected to the base body (2), and the retaining part (28) has a stop face (40) which is directed against the insertion direction (E). The receiving opening (26) also has an abutment face (42) which is directed in the insertion direction (E), wherein, when the retaining part (28) is moved against the insertion direction, the stop face (40) acts on the abutment face (42) of the receiving body (4). The receiving body (4) is elastically deformable, such that the abutment face (42) is elastically movable against the insertion direction (E) at least within a movement region. The receiving body (4) has a resistance element (69) which, when the abutment face (42) is moved beyond the movement region, generates a resistance against the insertion direction (E) which overcomes a further elastic deformation of the receiving body (4).

Description

Technical Field

[0001] This invention relates to a plug connector for manufacturing hoses and / or pipe fittings. The plug connector has a base and a receptacle. The base and receptacle each have an insertion channel for a plug component to be assembled in an insertion direction. Furthermore, the plug connector has a retaining member disposed in a receiving opening of the receptacle and, in a locked position, blocks the plug component to be assembled in the opposite insertion direction. The receptacle is connected to the base, wherein the retaining member has a stop surface pointing in the opposite insertion direction. The receiving opening also has a contact surface pointing in the insertion direction, wherein, when the retaining member moves in the opposite insertion direction, the stop surface acts on the contact surface of the receptacle. The receptacle is elastically deformable such that the contact surface is elastically movable in the opposite insertion direction, at least within a movement region. Background Technology

[0002] Furthermore, this type of plug connector exists on the market as "VOSS Plug System 241" and is particularly known by the name "SV241N / NSL". Here, in most cases during pre-assembly, the retaining component is inserted into the receiving opening of the receiver and the receiver is assembled into the insertion channel of the base. After assembly, that is, after the plug component to be assembled is inserted into the insertion channels of the receiver and the base, the retaining component at least form-locks the plug component from separating from the insertion channel of the receiver and the base in the opposite direction of insertion.

[0003] The plug component can be a so-called male plug constructed specifically according to standard SAE J2044. Here, the retaining component grips behind an annular collar constructed in the SAE plug profile and locks the annular collar in a form-locking manner against the insertion direction.

[0004] Furthermore, this system is used in automotive technology. In particular, these systems are applicable to fuel systems and "selective catalytic reduction" systems, hereinafter referred to as SCR systems, for reducing nitrogen oxides in exhaust gases.

[0005] SCR systems can be implemented in a known manner, either heated or unheated. A 32.5% urea aqueous solution, also known as AdBlue, is typically introduced into the piping of the SCR system. This composition is specified in DIN 70070 or ISO 22241-1. It is generally known that the urea aqueous solution freezes and expands at temperatures ranging from -8°C to -11°C. This can lead to failure of the connection system.

[0006] A similar type of plug connector is known from DE102016109051A1. Due to its structural design, this plug connector is designed such that high pressure or force in the piping system acts on the plug component and, in the opposite direction of insertion, presses the plug component against the retaining element. By arranging the retaining element within the receiving opening of the housing, the force acting on the retaining element from the plug component is transmitted via the retaining element's stop surface to the contact surface of the receiving opening.

[0007] A plug connector is known from EP3270028A2, wherein a receptacle has a connecting protrusion having a radially spring-resilient, axially oriented locking arm that extends freely in its external geometry. Here, the locking arm of the receptacle is in operative connection with a base, thereby locking the receptacle securely within the base.

[0008] The plug connectors known from DE102016109051A1 and EP3270028A2 have proven advantageous in practice. In particular, the structural construction of the retaining gripper with two pairs of spring arms offers significant advantages for assembly and installation safety.

[0009] However, in known types of plug connectors, a gap exists between the rearmost end of the plug component viewed in the insertion direction and the wall of the base opposite that end. This gap is particularly important as it serves as over-mating space for assembling the plug component in the plug connector. This gap is filled during operation with a fluid system medium, particularly a liquid urea solution. Under high operating pressures, or when the medium freezes, forces act against the insertion direction on the end of the plug component, thereby causing that end to move against the insertion direction. Here, the plug component presses against the retaining member with its annular collar, which in turn transmits the force to the housing, particularly as described in DE102016109051A1. Especially at low temperatures, the elasticity of the housing is reduced only to a lesser extent, thus the force transmitted to the housing exceeds its elastic range. If this elastic range is exceeded, plastic deformation and material failure are possible consequences. Summary of the Invention

[0010] The objective of this invention is to reduce the disadvantages of known plug connectors, particularly the disadvantages of using known retaining clamp plug connectors, preferably with respect to resistance to pipeline pressure, while maintaining at least equivalent functionality during operation.

[0011] According to the invention, the receiver has a resistance element that generates resistance to further elastic deformation of the receiver in the opposite direction of insertion when the contact surface moves beyond the moving region. The receiver advantageously has at least two moving regions. These moving regions have varying degrees of resistance to overcome the movement of the contact surface. Advantageously, an elastic region is provided by the elastic deformation of the receiver, which can compensate for pressure pulsations and fluctuations during operation. Furthermore, the resistance element can prevent overload, for example, in the case of abnormally high pressure during operation or frozen fluid, particularly frozen fluid in the over-insertion space.

[0012] When the pressure in the fluid system increases, the volume of fluid available can be rapidly increased by the travel stroke, thereby reducing the pressure acting on the connector. However, to limit movement and, in particular, to avoid plastic deformation, the resistance element restricts further movement of the contact surface, wherein the remaining pressure in the fluid system decreases due to the achievable increase in volume, preventing it from causing damage or plastic deformation of the connector.

[0013] The receiver is specifically constructed as a gripper retainer. Furthermore, the retaining member is preferably constructed as a retaining gripper that can be inserted into the gripper retainer perpendicular to the insertion direction. Here, the retaining gripper particularly has a U-shaped profile when viewed along the insertion direction. The receiving opening in the receiver is particularly constructed to complement the retaining gripper in the receiver perpendicular to the insertion direction and opens particularly on two opposing sides.

[0014] In an advantageous embodiment of the invention, the receiver has two elastically deformable disc-shaped elements that are parallel to the insertion direction and offset from each other, and extend in a plane perpendicular to the insertion direction. In particular, the disc-shaped elements define a receiving opening.

[0015] Appropriately, when viewed along the insertion direction, the front disc-shaped element has a contact surface for holding the stop surface of the component.

[0016] To match the elasticity of the container to the pressure conditions and intended use, according to an advantageous embodiment, the container has at least one strain gauge configured to be elastically deformable against and particularly along the insertion direction. In an advantageous variation of this embodiment, the container has at least two strain gauges offset around the insertion channel, wherein the strain gauges are each configured to be elastically deformable against the insertion direction.

[0017] Suitably, the strain gauges connect the disc-shaped elements to each other and are particularly arranged on the outer periphery of the disc-shaped elements. Advantageously, the disc-shaped elements themselves are elastically deformable, just like the strain gauges, so that the elastic deformability or movement range of the housing can be adjusted by the structural design of the strain gauges and disc-shaped elements.

[0018] To further enhance elasticity, the receptacle according to one embodiment of the invention has at least one material-saving portion. The material-saving portion is particularly understood as a groove, notch, contraction, or similar feature that disrupts the uniform structure of the receptacle. Preferably, the first and / or second disc-shaped elements and / or each strain gauge have at least one material-saving portion of this type. In particular, the material-saving portion can be constructed in the receptacle perpendicular to and / or parallel to the insertion direction.

[0019] Preferably, the resistance element is configured as an anvil arm extending parallel to the insertion direction within the receptacle. Specifically, the anvil arm is at least one side-locked or formed with the receptacle material and is disposed at at least one end in an anvil receptacle within the receptacle. Suitably, a gap is constructed between the contact section at at least one end of the anvil arm and the corresponding contact surface of the anvil receptacle. This gap advantageously decreases as the receptacle elastically deforms or the contact surface moves in the moving region, i.e., the contact section of the anvil arm moves closer to the contact surface of the anvil receptacle corresponding to the movement of the contact surface. In particular, when the contact section comes into contact with the contact surface, the resistance element increases the resistance to further deformation of the receptacle and the resulting movement of the contact surface in the opposite direction to the insertion direction. Particularly advantageously, the gap between the contact section of the anvil arm and the contact surface of the anvil housing can be adapted to the elastic deformability of the housing so that close contact occurs between the contact section of the anvil arm and the contact surface, especially before the movement of the abutment surface causes plastic deformation or damage to the housing.

[0020] According to another embodiment, at least one anvil arm is locked to or integrally formed with the housing material on one side. Suitably, the anvil arm has a free end positioned opposite to the ground. In particular, the free end is arranged in an anvil receiving portion within the housing, wherein the contact section is configured as an extension at the free end of the anvil arm.

[0021] Specifically, the anvil arm is connected to a disc-shaped element and extends parallel to the insertion direction to another disc-shaped element. Specifically, the other disc-shaped element has an anvil receiving portion, such that the disc-shaped elements are interconnected when the anvil arm's protruding portion at its free end and the contact surface of the anvil receiving portion come into contact with each other.

[0022] Another embodiment of the invention specifies that the receptacle has at least two anvil arms and two anvil receptacles. According to this embodiment, the anvil arms and anvil receptacles are advantageously configured such that, upon achieving at least two distinct elastic deformations of the receptacle, they sequentially abut their respective contact sections against their corresponding mating contact surfaces of the anvil receptacles. The distinct elastic deformations of the receptacle are distinguished, in particular, by the degree of elastic movement of the abutment surfaces of the receptacle against the insertion direction. Advantageously, this results in the generation of further resistance against the movement of the abutment surfaces of the receptacle upon achieving each distinct elastic deformation of the receptacle.

[0023] Suitably, the plug connector, according to another variation, has a reset element. Preferably, the insertion channel of the receptacle has an axial insertion gap for supporting the plug component to be assembled. Here, the insertion gap is particularly for providing an over-intercalation space that advantageously functions for assembling the plug component to be assembled. Advantageously, the insertion gap is defined by a rear stop of an annular collar for the plug component in the insertion channel of the receptacle, viewed in the insertion direction, and a retaining member arranged in the locked position before the rear stop, viewed in the insertion direction. Suitably, the reset element is at least partially arranged in the receptacle and can generate a reset force acting on the annular collar of the plug component to be assembled in the insertion direction. Advantageously, this keeps the over-intercalation space as small as possible, so that less freezeable and expandable fluid can accumulate in the over-intercalation space.

[0024] It is advantageous for manufacturing plug connectors that the housing and / or retaining component and / or base are integrally constructed and manufactured by injection molding. Suitably, the housing and base can be interconnected in a material-locking manner, particularly by laser welding, in a known manner. Furthermore, in the most modular possible implementation, instead of material-locking connections, the housing and base can be interconnected in the same known manner with locking elements, particularly with locking arms constructed parallel to the insertion direction, in a force-locking or force-form-locking manner. Attached Figure Description Other advantageous designs of the invention can be derived from the following description of the accompanying drawings and dependent claims.

[0025] in: Figure 1 An exploded view of one embodiment of the plug connector according to the present invention is shown. Figure 2 A perspective view of the first embodiment of the container, reversed from the side facing the insertion direction, is shown. Figure 3 It shows that according to Figure 2 Perspective section view of section AA. Figure 4 A perspective view of one side of the first embodiment of the receiver, pointing in the insertion direction, is shown. Figure 5 It shows that according to Figure 4 A perspective cross-section of section BB. Figure 6 A top view along the insertion direction is shown of one embodiment of a plug connector with an inserted plug component according to the present invention. Figure 7 It shows that according to Figure 6 A cross-sectional view along CC, Figure 8 The diagram shows the basis for the uninserted plug component. Figure 7 A detailed view of region D in the cross-sectional view. Figure 9 A perspective view of the second embodiment of the container, reversed from the side facing the insertion direction, is shown. Figure 10 It shows that according to Figure 9 A perspective cross-section of section FF. Figure 11 A perspective view of one side of the second embodiment of the receiver, pointing in the insertion direction, is shown. Figure 12 It shows that according to Figure 11 A perspective cross-section of section GG. Figure 13 A perspective cross-sectional view of a third embodiment of the container is shown. Figure 14 It shows that according to Figure 13 A perspective cross-sectional view of the third embodiment of the container, rotated 90°. Figure 15 It shows that according to Figure 13 A top view of the third embodiment of the container, pointing to one side along the insertion direction, and Figure 16 It shows that according to Figure 13 A perspective view of the third embodiment of the container facing the insertion direction. Detailed Implementation In different figures of the accompanying drawings, the same parts are always given the same reference numerals.

[0026] With regard to the following description, the invention is not limited to the described embodiments and is not limited herein to all or more features of the described combination of features. Rather, each individual sub-feature of the embodiment is important to the subject matter of the invention, both independently of and in combination with any features of other embodiments, in a manner separate from all other sub-features described in conjunction with that sub-feature.

[0027] As in Figure 1 As shown, the plug connector 1 for manufacturing hoses and / or pipe fittings has a base 2 and a receptacle 4. (As shown in...) Figure 7 and 8 As can be seen, the base 2 and the receiver 4 each have insertion channels 6 and 8 for the plug component 10 to be assembled along the insertion direction E. For illustration, in Figure 6 and 7 The plug component 10 is shown in the image. Figures 1 to 16 The image shows a housing 4 in an advantageous configuration as a gripper retainer embodiment.

[0028] The substrate 2 may be connected on one side, particularly to a fluid conduit (not shown). Preferably, for this purpose, the substrate 2 is as follows: Figure 1 , 6 The configuration shown in Figure 7 includes a connection section 12. The media to be connected can be configured as a hose or pipe. It can be specified that the fluid lines are connected by form-locking and / or force-locking or material-locking methods. Furthermore, the base 2 can be directly connected to the unit or another component of the fluid piping system.

[0029] A sealing assembly may be arranged in the insertion channel 6 of the base 2. This sealing assembly preferably includes two sealing rings 14, particularly elastomeric O-rings, and a spacer ring 16 between the two sealing rings. Preferably, the sealing assembly rests against the connecting protrusion 18 or support ring of the receiver 4, which points in the insertion direction E. An advantageous embodiment with a support ring is not shown. The support ring (which, like the spacer ring, is made of a material harder than the O-ring) resists the gap compression of the elastomeric O-ring. Here, the sealing assembly suitably seals the outer periphery of its sealing section relative to the inner wall of the insertion channel 6 of the base 2 after the plug component 10 to be assembled is assembled.

[0030] The plug component 10 is particularly a SAE J 2044 male plug. As exemplarily in... Figure 7 As shown, the plug component 10 is constructed as a hollow cylinder and specifically has a sealing section 20 and a locking section 22 arranged along the insertion direction E before the sealing section 20. The sealing section 20, in the inserted state, is preferably fully arranged in the insertion channels 6, 8 of the base 2 and the receiver 4. In particular, the sealing section 20 is separated from the locking section 22 by a surrounding annular collar 24 with an increased diameter.

[0031] Connector 1 has in Figure 1 The retaining member 28 shown, particularly in the illustrated embodiment, is configured to retain the gripper, as in... Figures 6 to 8 The arrangement shown is in the receiving opening 26 of the receiving body 4. According to Figure 6 and Figure 7 The diagram shows that the retaining component 28 is in the locked position, opposite to the insertion direction E, blocking the plug component 10 to be assembled.

[0032] The container 4 is specifically constructed as a gripper retainer. The retaining member 28, constructed to hold the gripper, is preferably insertable into the gripper retainer perpendicular to the insertion direction E. The retaining member 28, constructed to hold the gripper, here particularly has a U-shaped profile when viewed along the insertion direction E. The receiving opening 26 in the container 4 is constructed particularly complementary to the gripper holding part in the container 4 perpendicular to the insertion direction E and opens particularly on two opposing sides; in particular, the receiving opening 26 has an inlet opening and an outlet opening.

[0033] The retaining member 28 can be suitably pre-assembled into the receiving opening 26 of the receiving body 4. Here, the retaining member 28, configured as a retaining gripper, can preferably occupy at least two positions, namely a released position and a locked position, and in particular three positions, namely, additionally pre-assembled positions. In the released position and pre-assembled position (not shown), the plug member 10 to be assembled can be guided into the insertion channels 6, 8 through the retaining gripper. In particular, at least in the released position, the plug member 10 can be removed from the insertion channels 6, 8 in the reverse direction of insertion E. Preferably, in the locked position, the retaining gripper (corresponding to...) Figure 7 The plug component 10 is locked in a locking manner by holding the annular collar 24 of the plug component 10 in place to prevent movement in the opposite direction of insertion E.

[0034] The retaining component 28 is constructed to hold the gripper, particularly as in Figure 1 The diagram shows two pairs of spring arms. Suitably, each pair of spring arms consists of a positioning arm 30 and a functional arm 32. In particular, the positioning arms 30 are arranged behind the corresponding functional arms 32 when viewed along the insertion direction E.

[0035] Here, the functional arm 32 and the positioning arm 30 are arranged radially opposite each other relative to the insertion channels 6 and 8, respectively. Advantageously, the positioning arm 30 is configured as an anti-loss device and engages from the rear with a support element constructed in the receiving opening 26 in the pre-assembled position of holding the gripper.

[0036] The functional arm 32 specifically has a blocking side 34, preferably perpendicular to the insertion channels 6, 8 and pointing in the insertion direction E, and an inlet side 36, pointing in the opposite direction of the insertion direction E and at least partially inclined. The inlet side 36 is inclined such that when the plug component 10 to be assembled is inserted, the inlet side 36 abuts against the annular collar 24 of the plug component 10 in an inclined section, and the functional arm 32 elastically deforms radially outward relative to the insertion channels 6, 8. The blocking side 34 is configured such that once the plug component 10 is inserted so far into the insertion channels 6, 8 in the insertion direction E, such that the annular collar 24 of the plug component 10 is arranged behind the functional arm 32 in the insertion direction E, the functional arm 32 deforms radially back relative to the insertion channels 6, 8 and the annular collar 24 is locked in a form-locking manner by the blocking side 34 in the opposite direction of the insertion direction E.

[0037] The plug component 10 is advantageously inserted along the insertion direction E into the insertion channels 6, 8 of the base 2 and the receiver 4 until the annular collar 24 is engaged rearward by the functional arm 32. In this assembly method, so-called over-insertion is preferred, that is, it is advantageous for the plug component 10 to be over-inserted along the insertion direction E given the actual locking position, so as to achieve rearward engagement of the retaining component 28. For this purpose, the rearmost section of the insertion channel 6 of the base 2 along the insertion direction E is configured in Figure 8 The over-interpolation space 38 is shown in the figure.

[0038] As in Figures 1 to 3 As shown in 6, 9, 10 and 16, for use with in Figure 1 and 6 The guide slots engaged by the complementary guide pins 46 shown can advantageously be located on the end wall 44 of the receiver 4 pointing in the opposite direction of insertion E. The guide pins 46 are constructed on the functional arm and extend from the functional arm in the opposite direction of insertion E.

[0039] The guide slots are suitably constructed as elongated holes 48 with bends, thereby forming control profiles for the guide pins 46. Through the interaction of the control profiles and the guide pins 46, the insertion and ejection movements of the retaining member 28, configured to hold the gripper, perpendicular to the insertion direction E, are advantageously restricted, and the movement of the functional arm 32 radially relative to the insertion channels 6, 8 is controlled. Advantageously, the control profiles can adjust at least one pre-assembly position, a released position, and a locking position of the retaining gripper in the receiving opening 26. In the locking position, the guide pins 46 are arranged in the locking profile 50 of the control profile, which is located between the pre-assembly profile 52 and the released profile 54. The locking profile 50, the control profile, and the released profile 54 are interconnected via the elongated holes 48.

[0040] The clamp is held in place by radial pressure applied from outside the connector 1 to the release action portion 56 of the retaining clamp when the plug component 10 to be assembled is inserted into the insertion channel 8 of the receiver 4, or by pressure applied from inside the connector 1 to the guide side 36 of the functional arm 32. This is achieved by the guide pin 46 of the functional arm 32 following the control contour of the elongated hole 48. In the pre-assembled state, the guide pin 46 is specifically arranged in the pre-assembled profile 52. The retaining clamp can be advantageously transferred from the pre-assembled position to the locked position by radial pressure acting from outside the plug component 10 to be assembled into the insertion channel 8 of the receiver 4 on the release action portion 56 of the retaining clamp, or by pressure acting from inside the plug component 1 on the guide side 36 of the functional arm 32, in such a way that the guide pin 46 of the functional arm 32 follows the control profile of the elongated hole 48.

[0041] As in Figure 7 and Figure 8 As shown, the container 4 is connected to the base 2. Furthermore, in... Figure 7 and Figure 8 As shown, the retaining member 28 has a stop surface 40 pointing in the opposite direction to the insertion direction E. Facing the stop surface 40, the receiving opening 26 has a mating surface 42 pointing in the insertion direction E. Here, as in... Figure 8 As shown, when the retaining member 28 moves in the opposite direction of insertion E, the stop surface 40 acts on the abutment surface 42 of the receiver 4. Here, the receiver 4 is constructed to be elastically deformable such that the abutment surface 42 is elastically movable in the opposite direction of insertion E, at least within the moving area.

[0042] According to an embodiment not shown, the plug connector 1 and / or the fluid conduit connected to the plug component 10 to be assembled can be configured for electric heating. For heating the plug connector 1, a heating element is advantageously arranged on the base 2 and / or the housing 4, particularly wound around the base 2 and / or the housing 4. The heating element is preferably configured as an electric heating element, particularly as a single-core or multi-core heating wire or heating conductor.

[0043] Suitable, matrix 2, as in Figure 1 , 7 As shown in Figure 8, a heating section is provided, in which heating devices are arranged. In particular, the substrate 2 has at least one guide element 58 in the heating section for guiding and directing the heating devices. According to a preferred embodiment, the guide element 58 is a helical guide groove that extends helically around the periphery of the substrate 2.

[0044] According to the present invention, the container 4 is as follows: Figures 1 to 6The abutment surface 42, as shown in Figures 8 to 14, has a resistance element 69. The resistance element 69 generates resistance in the opposite direction of insertion E to overcome further elastic deformation of the receptacle 4 when the abutment surface 42 moves beyond the moving area.

[0045] Suitably, the housing 4, according to an embodiment of the invention, has at least two moving regions. These moving regions have varying degrees of resistance to overcome movement of the contact surface 42. Advantageously, a resilient region is provided by the elastic deformation of the housing 4, which can compensate for pressure pulsations and fluctuations during operation. The resistance element 69 provides a range of resistance to prevent overload, for example, due to deformation exceeding the moving regions.

[0046] The movable region is not a limitation of the elastic region according to the invention. In particular, the container 4 can also be elastically deformed beyond the movable region. However, the container 4 cannot be plastically deformed within the movable region by the movement of the contact surface 42 in the opposite direction to the insertion direction E.

[0047] In particular, when there is abnormally high pressure during operation or when the fluid is frozen, especially when... Figure 7 When the fluid freezes in the insertion space 38 shown, the container 4 or the contact surface 42 of the container 4 deforms outside the moving area.

[0048] When the fluid in the connector 1 freezes, it expands and its volume increases. Consequently, a loosening force acting against the insertion direction E on the tip of the plug component 10 is applied to the plug component 10. (See [link]). Figure 7 The first loosening force F1. The plug component 10 then transmits the loosening force to the retaining component 28, particularly to the locking side 34 of the functional arm 32, through its form-locking connection with the annular collar 24 in the opposite direction of insertion E. See Figure 7 The second loosening force F2. According to the invention, the retaining member 28 is arranged in the receiving opening 26 and then transmits the loosening force via the stop surface 40 to the abutment surface 42 of the receiving opening 26, thereby deforming the receiver 4 or moving the abutment surface 42, see [reference]. Figure 7 The third loosening force F3.

[0049] When the pressure in the fluid system increases, the volume of fluid available can be rapidly increased by the movement stroke, thereby reducing the pressure acting on the plug connector 1. However, in order to limit movement and, in particular, to avoid plastic deformation, the resistance element 69 restricts further movement of the contact surface 42, wherein, due to the achievable increase in volume, the remaining pressure in the fluid system decreases, so that it no longer causes damage or plastic deformation to the plug connector 1.

[0050] Especially corresponding to in Figures 1 to 5In the advantageous embodiments shown in 9 to 14 and 16, the receiver 4 has two disc-shaped elements 60 and 62 that are parallel to and offset from the insertion direction E and extend respectively in a plane perpendicular to the insertion direction E. In particular, the disc-shaped elements 60 and 62 are elastically deformable and limit the receiving opening 26. Suitably, the first disc-shaped element 60, viewed from the front along the insertion direction E, has a mating surface 42 for the stop surface 40 of the retaining member 28. Furthermore, the first disc-shaped element 60, viewed from the front along the insertion direction E, in particular has a control profile or elongated hole 48 for guiding the guide pin 46 of the retaining gripper.

[0051] According to another advantageous embodiment, the housing 4 has at least one strain gauge 64, particularly two strain gauges 64 offset around the insertion channels 6, 8. The strain gauges 64 are suitably configured to be elastically deformable against the insertion direction E and, particularly, along the insertion direction E.

[0052] In particular, Figures 1 to 16 The advantageous embodiment shown includes a strain gauge 64. Here, the strain gauge 64 optimizes the elasticity of the housing 4 in such a way that the elasticity can be matched or adapted to pressure conditions and intended use. Particularly advantageously, as shown, when viewed radially relative to the insertion channels 6, 8, the strain gauge 64 restricts the receiving opening 26.

[0053] In addition, Figures 1 to 5 Advantageous embodiments are shown in 7 to 14 and 16, according to which strain gauges 64 interconnect disc-shaped elements 60 and 62. In particular, strain gauges 64 are arranged on the outer periphery of disc-shaped elements 60 and 62. Advantageously, disc-shaped elements 60 and 62 are elastically deformable themselves, just like strain gauges 64, so that the elastic deformability or movement range of the housing 4 can be adjusted by the structural design of strain gauges 64 and disc-shaped elements 60 and 62.

[0054] Advantageously, the container 4 has at least one material-saving portion 66. The material-saving portion 66 is particularly constructed as a groove, notch, or contraction, etc. The material-saving portion 66 increases the elasticity or deformability of the container 4 and reduces resistance against the insertion direction E. The material-saving portion 66 particularly disrupts the uniform structure of the container 4. Preferably, the first and / or second disc-shaped elements 60, 62 and / or each strain gauge 64 are as shown in... Figures 9 to 14 The one shown in 16 has at least one such material-saving section 66. In particular, as in... Figures 13 to 16 As shown, a material-saving section 66 may be constructed in the receiver 4 perpendicular to and / or parallel to the insertion direction E. Particularly advantageously, in Figures 13 to 16The embodiment of the receiver 4 shown optimizes the connection of the disc-shaped elements to match the force-displacement curve with possible requirements. Furthermore, the material-saving portion 66, constructed parallel to the insertion direction E, advantageously makes the receiver 4 particularly stable and simplifies manufacturing.

[0055] Suitably, the material-saving section can also be configured as a circular track tangential to the insertion channel 8 of the receiver, as particularly in Figure 11 and 12 As shown in the second disc-shaped element 62.

[0056] Especially Figure 3 , 5 Material-saving portions 66, constructed as grooves, are shown in 6, 9 to 12 and 16. These material-saving portions are constructed on the end wall 44 of the first disc element 60 or on the back side 68 of the second disc element 62 pointing in the insertion direction. Furthermore, in Figure 4 , 5 In sections 11 to 15, the material-saving section 66 is advantageously constructed as a notch, particularly a slit, which is constructed in the second disc-shaped element 62. Particularly advantageously, as in... Figures 9 to 16 As shown, the material-saving portion 66 is constructed in the form of a notch, particularly a groove, in the strain gauge 64.

[0057] Preferably, the resistance element 69 is as follows: Figures 1 to 6 The configuration shown in 8, 7 and 9 to 14 is an anvil arm 70 extending parallel to the insertion direction E in the housing 4. Advantageously, the anvil arm 70 is connected or formed to the material of the housing 4 on one side and arranged with its free end in the anvil receiving portion 72 in the housing 4.

[0058] In particular, such as in Figure 8 As shown, the contact section 74 is constructed on the protrusion 75 at the free end of the anvil arm 70. In particular, a gap is constructed between the contact section 74 of the protrusion 75 and the corresponding contact surface 76 of the anvil receiving portion 72. When the receiving body 4 deforms, especially when the abutment surface 42 moves in the opposite direction to the insertion direction E, the anvil arm 70 is linked by its material locking connection, thereby reducing this gap.

[0059] Advantageously, the resistance element 69 increases the resistance to further deformation of the receiver 4 in the opposite direction of insertion E when it comes into contact with the contact section 74, especially the protruding part 75, and the contact surface 76.

[0060] Advantageously, the gap between the contact section 74 of the anvil arm 70, particularly the protrusion 75, and the contact surface 76 of the anvil receiving portion 72 can be adapted to the elastic deformability of the receiving body 4, so that close contact occurs between the contact section 74 of the anvil arm 70 and the contact surface 76, especially before the movement of the abutment surface 42 causes plastic deformation or damage to the receiving body 4.

[0061] Corresponding to Figures 9 to 14 In one embodiment, at least one anvil arm 70 is advantageously connected to the disc-shaped elements 60, 62 on both sides.

[0062] Suitably, at least one anvil arm 70 connected to the disc-shaped elements 60, 62 on both sides is configured with an extension 75 forming a contact section 74 on one side. Here, the end having the extension 75 is advantageously connected radially to the disc-shaped elements 60, 62 relative to the insertion channels 6, 8 via a connecting tab 77. Figure 9 The described implementation of the anvil arm 70 can be seen in the image.

[0063] Particularly advantageous, such as in Figure 9 and Figure 16 As shown, when viewed in the circumferential direction of the insertion channels 6 and 8, the material-saving portion 66 is constructed adjacent to the connecting piece 77 in the disc-shaped element 60.

[0064] Figure 12 and 14 Another embodiment of the housing is shown, wherein at least one anvil arm 70, connected to the disc-shaped elements 60, 62 on both sides, is configured to connect to the disc-shaped elements 60, 62 such that the contact section 74 is configured as part of the disc-shaped elements 60, 62 themselves. Advantageously, according to this embodiment, the anvil arm 70 transitions into the disc-shaped elements 60, 62 on both sides such that the anvil arm 70 extends from the surface of the respective disc-shaped elements 60, 62 that points to or restricts the receiving opening 26. In order to facilitate the elasticity of the disc-shaped elements 60, 62 and the force necessary for movement in this embodiment, the region of the disc-shaped elements 60, 62 is configured as a strain bridging portion 79 into which the anvil arm 70 transitions with its contact section 74, as shown in... Figure 11 , 12 As shown in 14 and 15.

[0065] Advantageously, the strain bridging portion 79 is offset radially toward the insertion channels 6, 8, and the arcuate section of the strain bridging portion 79 is constructed to accommodate the disc-shaped elements 60, 62. Figure 12 , 14 Material saving portion 66 in the form of an axial notch in the second disc element 62 and 15.

[0066] Suitablely, when the contact surface 42 moves axially, the strain bridging part and the anvil arm 70 connected thereto move together in the opposite direction of insertion E.

[0067] exist Figures 2 to 5 Another embodiment of an anvil arm 70, or at least one anvil arm 70, is shown in Figure 8. Advantageously, at least one anvil arm 70 is materially locked to or formed on one side with the housing 4, particularly with the disc-shaped elements 60, 62. Suitably, the end of the anvil arm 70 opposite the material-locking connection is constructed as a free end. (See Figure 8 for further details.) Figure 5 As shown, the free end is specifically arranged in the anvil receiving portion 72 within the receiving body 4. To increase the resistance to axial movement of the contact surface 42, the contact section 74 is preferably configured as an extension 75 at the free end of the anvil arm 70. Here, the extension 75 or the contact section 74 specifically corresponds to Figure 10 The implementation plan is constructed by extending part 75 or contact section 74.

[0068] In particular, at least one of the disc-shaped elements 60, 62 is materially locked to or formed to at least one anvil arm 70 extending parallel to the insertion direction E and parallel to the corresponding other disc-shaped element 60, 62. This embodiment is particularly... Figures 1 to 6 Figures 8 and 10 to 14 show the corresponding anvil receiving portion 72, which is advantageously arranged in another corresponding disc-shaped element 60, 62. Suitably, the disc-shaped elements 60, 62 are interconnected by means of the anvil arm 70 in abutting contact with the contact surface 76 of the anvil receiving portion 72 at the contact section 74 of the anvil arm 70 to improve resistance to deformation or movement in the opposite direction of insertion E.

[0069] In order to adjust the resistance generated by the anvil arm 70, the anvil arm 70 itself and / or the anvil receiving portion 72 may be configured to be elastically deformable in the opposite direction of insertion E.

[0070] Advantageously, the anvil receiving portion 72 forms a material-saving portion 66 in the corresponding disc-shaped elements 60, 62, which further improves the elasticity against the insertion direction E and reduces resistance. Therefore, according to a preferred embodiment, material-saving portions 66, which are grooved in the corresponding disc-shaped elements 60, 62, are respectively constructed in the radially inserted channels 6, 8 and opposite to the anvil receiving portion 72. In particular... Figures 1 to 7 Figures 9 to 12 and 16 show the corresponding advantageous embodiments.

[0071] In an advantageous embodiment, the receiver 4 has two or more anvil arms 70 and corresponding anvil receptacles 72. In one advantageous embodiment, the receiver 4 has two anvil arms 70 and two anvil receptacles 72. The anvil receptacles 72 and anvil arms 70 are preferably arranged evenly around the insertion channels 6, 8. In particular, the two anvil arms 70 and anvil receptacles 72 are arranged diametrically opposite to the insertion channels 6, 8.

[0072] According to another alternative embodiment, the at least two anvil arms 70 and two anvil receptacles 72 are configured such that, upon achieving a specific deformation of the receptacle 4, they simultaneously bring their respective contact sections 74 into contact with the corresponding associated contact surfaces 76 of the anvil receptacle 72. This advantageously generates resistance directly from the moment the travel is reached or exceeded. This embodiment is characterized particularly by two resistance regions, advantageously a first resistance region and a second resistance region, in which the receptacle 4 or its deformation is located in the travel region, and in the second resistance region, from the degree of movement of the contact surface 42, the anvil arms 70 bring their respective contact sections 74 into contact with the corresponding associated contact surfaces 76 of the anvil receptacle 72.

[0073] Another advantageous embodiment of the invention also relates to a receptacle 4 having at least two anvil arms 70 and two anvil receptacles 72. Advantageously, the anvil arms 70 and anvil receptacles 72 are configured such that, upon achieving at least two distinct elastic deformations of the receptacle 4, they sequentially abut their respective contact sections 74 against their respective associated contact surfaces 76 of the anvil receptacles 72. Advantageously, upon achieving each distinct elastic deformation of the receptacle 4, further resistance is generated to overcome the movement of the abutment surfaces 42 of the receptacle 4, thereby progressively increasing resistance against the insertion direction E. The distinct elastic deformations of the receptacle 4 are distinguished, in particular, by the degree of elastic movement of the abutment surfaces 42 of the receptacle 4 against the insertion direction E. Advantageously, this type of plug connector 1 has a first resistance region in which the receptacle 4 or its deformation is located in the moving region, and further has at least one second and third resistance regions in which the anvil arm 70 abuts against the corresponding contact surface 76 of the anvil receptacle 72 with its respective contact section 74.

[0074] Suitably, at least one anvil arm 70 is configured with its free end pointing in the insertion direction E, and at least one anvil arm 70 is configured with its free end pointing in the opposite direction to the insertion direction E. This embodiment... Figure 1 , 2As shown in Figures 3 and 4, component manufacturing is adapted to the existing tooling conditions. According to the embodiment shown in the figures, an anvil arm 70 is arranged on a first disc-shaped element 60 positioned forward when viewed along the insertion direction E and extends into an anvil receiving portion 72 of a second disc-shaped element 62 positioned rearward when viewed along the insertion direction E. The anvil arm 70 is arranged on the second disc-shaped element 62 and extends into the anvil receiving portion 72 of the first disc-shaped element 60, positioned diametrically opposite to the insertion channels 6 and 8.

[0075] According to another advantageous implementation scheme, which is particularly... Figures 9 to 12 As shown, at least one anvil arm 70 connected to the disc elements 60, 62 on both sides has an extension 75 on at least one side. Suitably, the end of the anvil arm 70 with the extension 75 is radially connected to the disc elements 60, 62 relative to the insertion channels 6, 8 by a connecting tab 77. Furthermore, in the advantageous embodiment, at least one additional anvil arm 70 connected to the disc elements 60, 62 on both sides is configured to connect to the disc elements 60, 62 such that the contact section 74 itself is configured as part of the disc elements 60, 62.

[0076] Advantageously, in another variant not shown, the insertion channel 8 of the receptacle 4 has an axial insertion gap for supporting the plug component 10 to be assembled. This insertion gap is particularly useful for over-insertion of the plug component 10 during assembly. The insertion gap is preferably defined by a rear stop 78 of the annular collar 24 of the plug component 10 in the insertion channel 8 of the receptacle 4, viewed along the insertion direction E, and a retaining member 28 positioned in the locked position prior to the rear stop 78, viewed along the insertion direction E. Suitably, a reset element is at least partially arranged in the receptacle 4 and can generate a reset force acting on the annular collar 24 of the plug component 10 to be assembled along the insertion direction E. Advantageously, this keeps the over-insertion space 38 as small as possible, thereby allowing less freezeable and expandable fluid to accumulate in the over-insertion space 38.

[0077] For particularly advantageous manufacturing, the housing 4 and / or retaining component 28 and / or base 2 are integrally constructed and manufactured by injection molding.

[0078] To achieve particularly high load capacity, according to an advantageous embodiment, the housing 4 and the base 2 are interconnected by material locking, particularly by laser welding. Alternatively, to simplify maintenance and / or adaptation, the housing 4 and / or the base 2 may have locking elements and / or screw elements, by which the base 2 and the housing 4 are interconnected. Particularly advantageous is an embodiment where the base 2 and the housing 4 can be separated from the base 2, for example, when the base 2 is non-removably connected to the unit.

[0079] The following describes an assembly example in an advantageous embodiment of a plug connector 1 having a base 2 and a housing 4.

[0080] In order to pre-assemble the plug connector 1, the sealing component is first installed into the base 2.

[0081] Subsequently, the container 4 is joined to the substrate 2, and in particular, the materials are locked together.

[0082] Then, retaining component 28, particularly retaining gripper perpendicular to the insertion direction E, is inserted into the receiving opening 26 of the receiving body 4, thereby initially creating a pre-assembly state in which the guide pin 46 of the functional arm 32 engages in a complementary guide slot. In the pre-assembly position, the guide pin 46 is arranged in the pre-assembly profile 52 and the support element is engaged rearward by the positioning arm in the receiving opening 26. A plug-in connector 1 can be provided in this state.

[0083] Alternatively, if necessary or even preferred, the housing 4 may be pre-assembled with the retaining components, particularly the retaining grippers, before being connected to the base 2.

[0084] During final assembly, the plug component 10 is inserted into the insertion channels 6, 8 along the insertion direction E. Here, the annular collar 24 of the plug component 10 contacts the guide side 36 of the functional arm 32 as it passes the retaining member 28. Preferably, the functional side is configured such that the retaining gripper is pulled deeper radially into the receiving opening 26 before the functional arm 32 expands radially and thus expands elastically in the radial direction. The functional arm 32 can then finally lock behind the annular collar 24 and use its locking side 34 to block the movement of the plug component 10 against the insertion direction E.

[0085] To disengage the plug connection, the retaining gripper is moved deeper into the receiving opening 26 by pressing against its disengagement action 56. This causes the guide pin 46 to move radially outward within the guide profile of the guide slot into the disengagement profile 54. Consequently, the functional arm 32 expands, thereby releasing the annular collar 24 again through the expansion of the functional arm 32. The connection can now be released by pulling the plug component 10 out of the plug connector 1 in the opposite direction of insertion E.

[0086] This invention is not limited to the embodiments shown and described, but also includes all embodiments that serve the same purpose in the sense of the invention. It should be explicitly emphasized here that embodiments are not limited to all features combined; rather, any individual sub-feature may have inventive significance independently of all other sub-features.

[0087] List of reference numerals 1 Plug connector 2 matrix 4 containers 6-substrate insertion channel 8 insertion channels of the container 10 plug components 12 connecting sections 14 sealing rings 16 fixed-distance rings 18 Connecting protrusions 20 Sealed Sections 22-block section 24-ring collar 26 Accommodation openings 28 retaining components 30 positioning arm 32-function arm 34 Blockade Side 36 Import side 38 Interleaving Space 40 stop face 42 backrests 44 end wall 46 guide pins 48 long holes 50 Locking Profile 52 Pre-assembly outline 54 Loose Contour 56 Loosening Action Section 58 guide elements 60 First disk-shaped element 62 Second disk-shaped element 64 strain gauges 66 Materials Saving Department 68 back side 69 resistance elements 70 Anvil Arm 72 Anvil Reception Section 74 contact section 75 Exceeding the limit 76 contact surfaces 77 Connector 78 Stop section 79 Strain Bridge E Insertion direction F1 first release force F2 second release force F3 third release force

Claims

1. A plug connector (1) having a base (2) and a receptacle (4), each having an insertion channel (6, 8) for inserting a plug component (10) to be assembled along an insertion direction (E), and further having a retaining member (28) disposed in a receiving opening (26) of the receptacle (4) and, in a locked position, blocking the plug component (10) to be assembled against the insertion direction (E), wherein, The container (4) is connected to the base (2), wherein the retaining member (28) has a stop surface (40) pointing in the opposite direction to the insertion direction (E), wherein the receiving opening (26) has a contact surface (42) pointing in the insertion direction (E), wherein when the retaining member (28) moves in the opposite direction to the insertion direction (E), the stop surface (40) acts on the contact surface (42) of the container (4), wherein the container (4) is constructed in such an elastically deformable manner that the contact surface (42) is elastically movable in the opposite direction to the insertion direction (E) at least within the moving area, characterized in that the container (4) has a resistance element (69) that generates resistance when the contact surface (42) moves beyond the moving area. The resistance to further elastic deformation of the housing (4) against the insertion direction (E) is provided, wherein the resistance element (69) is configured as an anvil arm (70) extending in the housing (4) parallel to the insertion direction (E), the anvil arm being at least one side locked to or formed with the material of the housing (4) and arranged at least one end in an anvil receiving portion (72) in the housing (4), wherein a gap is formed between a contact section (74) at at least one end of the anvil arm (70) and a corresponding contact surface (76) of the anvil receiving portion (72), the gap decreasing as the contact surface (42) moves and increasing the resistance to further deformation of the housing (4) against the insertion direction when the contact section (74) comes into contact with the contact surface (76).

2. The plug connector (1) according to claim 1, characterized in that, The receiving body (4) has two elastically deformable disc-shaped elements (60, 62) that are parallel to the insertion direction (E) and extend in a plane perpendicular to the insertion direction (E), wherein the disc-shaped elements (60, 62) define the receiving opening (26).

3. The plug connector (1) according to claim 2, characterized in that, The housing (4) has at least one strain gauge (64), and the strain gauge (64) is elastically deformable in the opposite direction of the insertion direction (E).

4. The plug connector (1) according to claim 3, characterized in that, The strain gauge (64) radially restricts the receiving opening (26).

5. The plug connector (1) according to claim 3, characterized in that, The housing (4) has two strain tabs (64) offset around the insertion channels (6, 8), and these strain tabs (64) are elastically deformable in the opposite direction of the insertion direction (E).

6. The plug connector (1) according to claim 5, characterized in that, The strain gauge (64) radially restricts the receiving opening (26).

7. The plug connector (1) according to any one of claims 3 to 6, characterized in that, The strain gauges (64) connect the disc-shaped elements (60, 62) to each other and are arranged on the outer periphery of the disc-shaped elements (60, 62).

8. The plug connector (1) according to any one of claims 1 to 6, characterized in that, The container (4) has at least one material-saving section (66) which improves the elasticity of the container (4).

9. The plug connector (1) according to claim 8, characterized in that, The at least one material-saving section (66) is constructed as a groove or notch.

10. The plug connector (1) according to any one of claims 2 to 6, characterized in that, At least one anvil arm (70) is connected to the disc-shaped element (60, 62) on both sides.

11. The plug connector (1) according to claim 10, characterized in that, At least one anvil arm (70) connected to the disc-shaped elements (60, 62) on both sides has an extension (75) on one side forming the contact section (74), wherein the end having the extension (75) is radially connected to the disc-shaped elements (60, 62) relative to the insertion channel (6, 8) by means of a connecting tab (77).

12. The plug connector (1) according to claim 10, characterized in that, At least one anvil arm (70) connected to the disc-shaped elements (60, 62) on both sides is configured to connect to the disc-shaped elements (60, 62) such that the contact section (74) is configured to be part of the disc-shaped elements (60, 62) themselves.

13. The plug connector (1) according to any one of claims 1 to 6, characterized in that, At least one anvil arm (70) is connected or formed to the material of the container (4) on one side and has a free end disposed opposite to it, the free end being arranged in the anvil receiving portion (72) in the container (4), wherein the contact section (74) is configured as an extension (75) at the free end of the anvil arm (70).

14. The plug connector (1) according to any one of claims 2 to 6, characterized in that, At least one of the disc elements (60, 62) is materially locked to or formed to at least one anvil arm (70) extending parallel to the insertion direction (E) and parallel to the corresponding other disc element (60, 62), and the corresponding anvil receiving portion (72) is arranged in the corresponding other disc element (60, 62).

15. The plug connector (1) according to any one of claims 1 to 6, characterized in that, The container (4) has two or more anvil arms (70) and corresponding anvil receptacles (72), which are evenly distributed around the insertion channels (6, 8).

16. The plug connector (1) according to claim 15, characterized in that, The container (4) has two anvil arms (70) and an anvil receiving portion (72), which are arranged in opposite directions relative to the insertion channels (6, 8) along the diameter.

17. The plug connector (1) according to claim 15, characterized in that, At least two anvil arms (70) and two anvil receptacles (72) are configured such that, in achieving a defined deformation of the receptacle (4), they simultaneously bring their respective contact sections (74) into contact with the corresponding contact surfaces (76) of the anvil receptacles (72).

18. The plug connector (1) according to claim 15, characterized in that, The anvil arm (70) and the anvil housing (72) are configured such that, upon reaching at least two different defined deformations of the housing (4), they are distinguished by the degree of movement of the contact surface (42) of the housing (4) against the insertion direction (E), and they successively make contact with their respective contact sections (74) abutting against their respective associated contact surfaces (76) of the anvil housing (72), thereby generating further resistance against the movement of the contact surface (42) of the housing upon reaching each defined elastic deformation of the housing (4).

19. The plug connector (1) according to claim 15, characterized in that, At least one anvil arm (70) is configured such that its free end points along the insertion direction (E), and at least one anvil arm (70) is configured such that its free end points opposite to the insertion direction (E).

20. The plug connector (1) according to claim 10, characterized in that, At least one anvil arm (70) connected to the disc-shaped elements (60, 62) on both sides is configured with an extension (75) on at least one side, wherein the end with the extension (75) is radially connected to the disc-shaped elements (60, 62) relative to the insertion channels (6, 8) by means of a connecting tab (77), and at least one additional anvil arm (70) connected to the disc-shaped elements (60, 62) on both sides is configured to connect to the disc-shaped elements (60, 62) such that the contact section (74) itself is configured as part of the disc-shaped elements (60, 62).

21. The plug connector (1) according to any one of claims 1 to 6, characterized in that, The insertion channel (8) of the receptacle (4) has an axial insertion gap for supporting the plug component (10) to be assembled, wherein the insertion gap is defined by a rear stop (78) of an annular collar (24) for the plug component (10) in the insertion channel (8) of the receptacle (4) as viewed along the insertion direction (E) and a retaining member (28) arranged in the locked position before the rear stop (78) as viewed along the insertion direction (E), wherein a reset element is at least partially arranged in the receptacle (4) and can generate a reset force acting on the annular collar (24) of the plug component (10) to be assembled along the insertion direction (E).

22. The plug connector (1) according to any one of claims 1 to 6, characterized in that, The container (4) and / or the retaining member (28) and / or the base (2) are integrally constructed and manufactured by injection molding.

23. The plug connector (1) according to any one of claims 1 to 6, characterized in that, The container (4) and the substrate (2) are connected to each other in a locking manner.

24. The plug connector (1) according to claim 23, characterized in that, The container (4) and the substrate (2) are laser welded together.

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