Readably coupled connectors and methods of connecting the same

Abstract

A coupling connector has a retaining element for locking a coupling plug in a connector body. The coupling connector comprises a verification element for indicating a connection status between the coupling connector and the coupling plug. The verification element is movably mounted on the connector body and indicates the connection status by the position of the verification element relative to the connector body. The coupling connector comprises a chip, an antenna and a switch. The switch has at least one switch contact and a closing element, wherein the chip, the at least one switch contact and the closing element are parts of a switch circuit. The coupling connector is designed such that the state of the switch circuit changes during insertion of the coupling plug into the connector body. The chip and / or the antenna and / or the at least one switch contact are arranged on the verification element and / or on the retaining element.

Description

[0001] Cross-references to related applications

[0002] This disclosure claims the benefit and priority of European application 22153386.2, filed on 26 January 2022, the entire contents of each of which are incorporated herein by reference. Technical Field

[0003] This disclosure relates to a coupling connector and a method for connecting the coupling connector and a coupling plug, the coupling plug being insertable into the coupling connector. Background Technology

[0004] In the connectors known from US7,244,142B2, the retainer is designed to both mount and simultaneously optically display or indicate the connection status. The generally U-shaped retainer or verification element has an antenna and a chip on the outside of its U-shaped base, wherein the antenna and chip are incorporated into a tag-like element. Here, a protrusion of the connector body projects radially through an opening in the U-shaped base of the retainer, thereby actuating the corresponding switching contacts of the transmitter.

[0005] A disadvantage of the embodiment described above from US7,244,142B2 is that the chip does not store the changed state of the switching circuit. However, the disconnected switching circuit ensures that the antenna is inactive, allowing the reader to infer from the absence of a transmission signal that the connector plug is not fully inserted into the connector body. However, other reasons may also cause the absence of a transmission signal. For example, due to the alignment or positioning of the connector and reader relative to each other, it is easy for the reader to only slightly acquire the transmission signal when it is present. The reader will then display a false negative signal, and the user will mistakenly believe that there is no fluid connection between the connector plug and the connector. Therefore, the user is always uneasy when no signal is acquired. Thus, the error can lie in insufficient mechanical connection, and therefore also in insufficient fluid connection, but also in an unfavorably positioned reader.

[0006] This problem is solved in EP3544114A1 by the fact that, since the state of the switching circuit is stored in the RFID chip, the transmitted signal actively indicates an open or closed fluid connection. If no transmitted signal is acquired, this is always due to the signal transmission path, not the open state of the switching circuit or the fluid connection. The retainer is designed to house the connector plug within the connector body and to indicate that the connector plug is fully installed. Therefore, the retainer combines these two functions, allowing the retainer and the verification piece to be radially inserted into the connector body equally and simultaneously. The RFID chip, along with the antenna and two switch contacts, is applied to the outside of the connector body. In contrast, the closure is fastened to the inside of the retainer such that if the retainer is fully inserted into the connector body, the closure contacts the two switch contacts. This contact is detected and stored by the RFID chip and can subsequently be automatically read by a reader, allowing the connection status to be acquired not only optically by the position of the retainer but also electronically.

[0007] The disadvantage of the connector known from EP3544114A1 is that the arrangement of the antenna and switch contacts occupies a relatively large amount of usable surface in the axial central region of the connector body. The antenna and switch contacts are located on a label that is affixed to the larger central portion of the connector body. However, this label requires a smooth surface on the connector body and precise contact with that surface so that the label does not leave any wrinkles on the connector body. Therefore, the label specifies many structural requirements, allowing for fewer design variations in the connector body. For example, fluid coupling systems benefit from modularity principles because different coupling parts can be combined with different connection components. Naturally, the connection between two parts is located in the central axial region of the connector body, creating a conflict between the flexible modularity principle on the one hand and the automatic electronic acquisition of the connection status on the other. Summary of the Invention

[0008] Therefore, the purpose of this disclosure is to provide a connector that is equally compact and flexible in its manufacture and can automatically acquire connection status electronically. Preferably, the connector can also handle the task of providing optical and / or tactile displays of connection status.

[0009] This / these objectives are achieved by a connector for automatically acquiring connection status, comprising a connector body having a connecting portion and a connecting part, wherein the connecting portion is designed to reversibly and detachably connect with a complementary connecting plug, wherein the connecting part is designed to be connected to, or designed to be connected to, a pipe or unit, wherein the connecting portion and the connecting part are fluidly connected to each other via an internal channel. The connector includes a retainer for locking the connecting plug within the connector body, wherein the retainer is movably mounted on the connector body, wherein the connector has a verification element for indicating the connection status between the connector and the connecting plug, wherein the verification element is movably mounted on the connector body, and the verification element indicates the connection status by its position relative to the connector body. The connector has a transmitter for transmitting a signal, wherein the transmitter is designed to transmit the connection status, wherein the transmitter includes a chip, an antenna, and a switch, wherein the switch has at least one switch contact and a closing element, wherein the chip, at least one switch contact, and the closing element are components of a switching circuit. The switching circuit is in an open or closed state depending on the position of the closing element relative to at least one switch contact. The connector is designed such that the state of the switching circuit changes during insertion of the connector plug into the connector body. The transmitter is designed such that the changed state can be stored in a chip and retrieved by a reader via a transmitted signal. The chip and / or antenna and / or at least one switch contact are arranged on a verification element and / or a holding element.

[0010] It is possible that the retainer and the verification element are multi-piece or single-piece components, particularly components of a modular assembly with an integral design. Preferably, the retainer and the verification element are configured to be separate from each other. In particular, it is possible that the retainer and the verification element are mounted on the connector body such that the retainer and the verification element can move at least partially independently from each other, and preferably completely independently, and advantageously, the retainer and the verification element are not considered components of the modular assembly.

[0011] This disclosure is initially based on the finding that the closure is relatively small relative to the assembly including switch contacts, chips, and especially antennas, such that the relatively small closure occupies only a small space on the surface of the connector body. It has been found that, if necessary, the connector body can be readily given a two-part construction in the process of arranging the chip, antenna, and / or at least one switch contact on the verification element and / or retainer. This disclosure is further based on the finding that the verification element or retainer can be designed to accommodate—and preferably also protect—the switch contacts, chip, and antenna.

[0012] In particular, it has been found that the advantages of arranging the chip, antenna, and / or at least one switch contact on the verification and / or holding components outweigh the associated disadvantages. This inventive arrangement does require a larger verification / holding component, as it houses the switch contacts, chip, and antenna. However, this disclosure is further based on the understanding that a large volume of the verification / holding component does not necessarily lead to a correspondingly larger volume of the connection connector, since the surface area provided for the electronic components is primarily related to the condition of the verification / holding component. Therefore, the verification / holding component can provide a large surface area without decisively increasing the volume of the connection connector in the process, an increase that is generally undesirable in the automotive field. For this reason, the connection connector is compact in design, flexible in manufacture, and further provides the ability to automatically and reliably acquire connection status electronically. Thus, the aforementioned objective is achieved.

[0013] Preferably, the term "axial" relates to mounting components, particularly to coupling connectors or coupling plugs. Preferably, the term "axial" refers to the centerline direction of the coupling portion of the coupling connector. Regarding coupling plugs, preferably, the term "axial" refers to the centerline direction of the sealing surface portion of the coupling plug. If related to the coupling portion of the coupling connector, the term "axial" may also refer to the centerline direction of the coupling portion. If the coupling connector has an angled configuration, the axial direction of the coupling portion differs from the axial direction of the coupling portion itself.

[0014] Preferably, the expression "axially inward" refers to the axial direction starting from the connection opening of the connector and along the axial middle portion of the connector, or the axial direction starting from the plug opening of the plug and along the axial middle portion of the plug.

[0015] Preferably, the term "radial" relates to the corresponding axial direction. In a longitudinal section of the part (preferably, the central axis lies in the image plane), the radial direction is preferably aligned perpendicular to the axial direction. Advantageously, the expression "circumferential direction" relates to the axis or the axial direction based on the axis.

[0016] Preferably, the connection portion is designed to connect to a pipe or tube. Specifically, the connection portion can be frictionally and / or materially connected to the pipe. For example, a friction connection can be achieved by press-fitting the pipe onto or into the connection portion. It is possible to materially connect the pipe to the connection portion by welding. For example, welding methods can involve laser welding and friction welding. According to a very preferred embodiment, the pipe is inserted into the connection portion, and preferably, the pipe is materially connected to the connection portion by laser welding. It is possible for the connection portion of the coupling connector to be integrally connected to the unit. It is possible to manufacture the unit or a part of the unit together with the coupling connector by injection molding. For example, the unit can be a tank, pump, nozzle, etc. According to a very preferred embodiment, the coupling connector is a separately manufactured part, such that, preferably, the connection between the coupling connector and the pipe or unit is established only later.

[0017] Preferably, the connector is a separately manufactured part. Preferably, the connector has a hook-and-loop connection to the end portion of a pipe or unit. In particular, the hook-and-loop connection to the pipe or unit can be friction-based and / or material-based. It is possible that the connector is integrally connected to the unit. For example, the unit or a portion thereof can be manufactured together with the connector by injection molding. Preferably, the pipe is frictionally inserted into or plugged into the end portion. Advantageously, the pipe or unit is material-connected to the connector or end portion, particularly by welding. Advantageously, welding can be performed by laser welding or friction welding.

[0018] Preferably, the term "switch contact" refers to a conductive element capable of reversibly making electrical contact with a closure. One or more switch contacts may each be designed as contact strips. Preferably, a switch contact includes at least one contact point. Advantageously, the closure includes at least one contact point, and preferably two contact points, which make electrical contact with the contact points of one or more switch contacts during the closing of the switching circuit. Advantageously, the antenna is electrically connected to the chip.

[0019] According to a preferred embodiment, the retainer and the verification element are separately designed components, and preferably, the retainer and the verification element have different directions of movement during displacement on the connector body. Preferably, the retainer can be inserted into the connector body radially. Preferably, the retainer, in the longitudinal section of the connector and in a fully inserted state into the connector body, is at least partially arranged radially outside the verification element. Particularly preferably, at least a portion of one of the operating portions is radially arranged outside the verification element. This arrangement has the advantage of allowing for well-designed disconnection of the movement directions of both the retainer and the verification element. Preferably, the basic shape of the retainer is U-shaped. Possibly, the basic shape of the retainer is designed to be annular. According to an embodiment, the retainer can be radially extended via a connector plug. According to an embodiment, the retainer comprises metal. According to another embodiment, the retainer is made of plastic. Preferably, the retainer is a single-piece design, and more preferably, the retainer is an integral design. Advantageously, on the one hand, the retainer has a U-shaped base or operating portion, and on the other hand, the retainer has two latching arms. According to a preferred exemplary embodiment, the actuating portion is mounted between two flanges on the outer side of the connector body. Preferably, in the inserted state of the retainer, each of the two latching arms of the retainer is located in a latching arm window of the connector body.

[0020] Advantageously, the verification component comprises plastic. It is highly preferred that the verification component is manufactured separately from the retainer by injection molding. Particularly preferred is that the retainer and verification component can be reversibly removed from the connector body. Preferably, the expression "reversibly removed" means removal without damage. Advantageously, the retainer and / or verification component can be reversibly attached to the connector body. It is possible that the retainer and verification component form a multi-piece or one-piece—particularly a single, integrated one-piece—combination element.

[0021] Preferably, the retainer is designed to be elastically deformable for latching onto the locking element of the connector plug. For example, the locking element of the connector plug can be a shoulder, a groove, or a collar—preferably a continuous collar. Particularly preferred is that the retainer is designed to store reset energy during insertion of the connector plug into the connector body. Preferably, the retainer is designed to release the stored reset energy and latch onto the locking element of the connector plug once the locking element of the connector plug has reached the retainer or latching arm in the axial direction. Very preferably, the retainer is reversibly detachable from the locking element or the connector plug. This achieves a particularly quick and good mechanical connection between the connector plug and the connector.

[0022] Advantageously, the closure has a movable design, preferably a spring-loaded design. Therefore, the switch contacts do not require elasticity in their design, thereby improving the stability of the switch. According to a particularly preferred embodiment, the closure is designed as a leaf spring. Preferably, the closure comprises metal. Advantageously and preferably, the closure includes a portion attached to the connector body and a portion projecting from the connector body. Advantageously, in a side view of the connector body, the portion of the closure projecting from the connector body is obliquely aligned with the central axis of the connecting portion. Most preferably, in a side view of the connector body, the portion projecting from the connector body extends at least partially radially outward in an axially inward direction.

[0023] According to a very particularly preferred embodiment, in a connected state where the connector is not connected to the connector plug, the verification element is axially movably mounted on the connector body. Preferably, the verification element or connector body is designed such that the verification element can present an axially inward position and at least one axially outward position. Very particularly preferred is that the connector is designed such that the state of the switching circuit is changed—preferably reversibly—by moving the verification element from the axially outward position to the axially inward position. Preferably, the connector is designed such that the state of the switching circuit changes during the process of moving the verification element from the axially inward position to the axially outward position. Very particularly preferred is that the connector is designed such that the switching circuit is disconnected during the process of moving the verification element from the axially outward position to the axially inward position.

[0024] Advantageously, the connector is designed such that axially outward and / or axially inward positions are defined by / suitably by at least one locating element of the connector body and / or at least one locating member of the verification element. Most preferably, the axially outward and / or axially inward positions of the verification element are defined by latching the locating member of the verification element to the locating element of the connector body. Advantageously, at least one locating member of the verification element protrudes radially inward. At least one locating member can engage with at least one locating element of the connector body, and preferably, latches into that locating element. Preferably, corresponding locating elements on the connector body are assigned to the axially outward and / or axially inward positions. Preferably, the verification element has two locating members, and corresponding locating elements on the connector body are assigned to these two locating members in the axially outward and / or axially inward positions. Preferably, one or more locating elements are designed to complement one or more locating members. According to a preferred embodiment, one or more locating elements are designed as recesses complementary to the protruding one or more locating members.

[0025] According to a preferred design, at least one switch contact and / or chip and / or antenna is arranged or secured to the side of the verification element or retainer facing the connector body. Therefore, the transmitter is better protected from the environment surrounding the connector. Another advantage of this arrangement is that the transmitter's components, which are secured to the verification element, can be easily secured to the verification element, for example, by adhesive bonding. For example, if the transmitter components are arranged on the outside of the verification element, at least the switch contact must engage radially through the verification element to contact the closure, preferably the closure secured to the connector body. Therefore, the switch contact must be embedded in the verification element during injection molding, which would be a complex task. It is highly preferred that at least one switch contact and / or chip and / or antenna is not visible in the top or side view of the verification element or connector, with the verification element mounted on the connector body.

[0026] According to a preferred embodiment, the verification element is primarily arranged on the outer side of the connector body. Therefore, the verification element can also be actuated manually. Particularly preferred is that the connector is designed so that the verification element is visible to the naked eye from the outside, and preferably, the verification element has a different color from the connector body. In a preferred design, the verification element partially covers the connector body along the annular edge direction and axially, and preferably, only partially covers the connector body. It is possible that the verification element covers the connector body at most 270°, 225°, or 180° along the annular edge direction. Advantageously, the axial extension of the verification element corresponds to at most 3 / 4, 2 / 3, or half of the axial extension of the connector body.

[0027] Preferably, the verification element can present at least two—preferably at least three—defined positions relative to the connector body. These positions can be defined by corresponding stops or pressing fasteners, and particularly by latching points. Most preferably, the verification element can present both axially outward and axially inward positions relative to the connector body. Preferably, the verification element can present an intermediate position relative to the connector body, located between the axially outward and axially inward positions. Advantageously, the connector is designed such that the state of the switching circuit changes as it moves from the axially outward position to the intermediate position. Preferably, the connector is designed such that the state of the switching circuit does not change from the intermediate position to the axially inward position.

[0028] Advantageously, the connector is designed such that, during insertion into the connector body, the connector moves the verification element from an axially outward position to an axially inward position or an intermediate position. Alternatively, the connector may be designed such that the connector cannot move the verification element from an intermediate position to an axially inward position. Advantageously, the connector is designed such that the verification element can be manually or effortlessly moved—particularly reversibly—from an axially outward or intermediate position to an axially inward position.

[0029] The advantage of having three defined positions is that the full insertion of the connector plug can also be verified tactilely. Before the connector plug is introduced, the user can determine, tactilely, particularly by manual actuation, that the verification element can reversibly shift to all three defined positions. If the connector plug is then introduced into the connector body, the verification element shifts from the axially outward position to the intermediate position, while the connector plug simultaneously latches into the connector body. In the latched state of the connector plug, the verification element can then shift from the intermediate position to the axially inward position and vice versa. However, since the connector plug is latched in the connector body, the retaining element can no longer be used to shift the verification element from the intermediate position to the axially outward position. Therefore, the connection state between the connector plug and the connector can be tactilely verified by manually shifting the verification element. Preferably, the switching circuit is in the intermediate position in the off state, such that, preferably, the state of the switching circuit does not change by shifting from the intermediate position to the axially inward position. Preferably, the three defined positions are defined by at least three positioning elements on the connector body, which are configured to engage with at least one positioning member on the verification element. Advantageously, the engagement of at least one positioning component with the three positioning elements is designed as a latch engagement.

[0030] According to a preferred embodiment, the connector body has at least one guide member—preferably two guide members—for guiding the verification element. Advantageously, the verification element includes at least one guide element, and preferably two guide elements. Advantageously, at least one guide element of the verification element engages with at least one guide member of the connector body in such a way that it defines the direction of movement of the verification element on the connector body—preferably the axial direction of movement. Possibly, the guide element of the verification element and the guide member of the connector body define the axial extension of the travel path of the verification element. Advantageously, at least one guide member of the connector body or at least one guide element of the verification element is designed as a groove, the longitudinal extension of which extends in the axial direction, while a corresponding other element is designed as a nose that engages in the groove.

[0031] According to a recommended embodiment, the verification element includes an actuating portion, wherein, preferably, the connector or verification element is designed such that the connector plug contacts the actuating portion during insertion into the connector body. The advantage of this arrangement is that information about the connection status is transmitted directly from the connector plug to the verification element, allowing the verification element to be designed with relative simplicity and robustness. Another advantage of this design is that the connector plug transitions into the connection state simultaneously with the transfer of the verification element and a change in the state of the switching circuit, thus eliminating the need for separate actuation of the verification element. Therefore, a single connection movement between the connector plug and the connector can set the entire connection device into an operational state, which can be simultaneously read electronically and verified optically and tactilely. Particularly preferably, the connector is designed such that the connector plug travels at least axially against the verification element during insertion into the connector body. According to one embodiment, the actuating portion of the verification element is a radially inwardly projecting nose.

[0032] Preferably, the connector has an actuating element that contacts the actuating portion of the verification piece during insertion into the connector body. Advantageously, the connector is designed such that the actuating element of the connector moves the verification piece from an axially outward position to an intermediate or axially inward position during insertion. Preferably, the actuating element of the connector is a protrusion projecting radially outward relative to the sealing surface. According to an embodiment, the actuating element may be the front of a retaining member of the connector. Preferably, the retaining member of the connector is used to secure the connector to prevent twisting within the connector body. Possibly, the actuating element of the connector corresponds to the front of a circumferential collar of the connector. The actuating element may also be a recess in the connector into which the actuating portion of the verification piece engages.

[0033] Preferably, the connector body includes an actuating recess, particularly an actuating recess in the form of a radially continuous groove or window, such that the connector plug or actuating element preferably contacts or travels against the verification element or actuating portion during full insertion into the connector body. Specifically, the term "window" refers to the circumferential edge of the actuating recess formed by the wall of the connector body in a top view of the connector body. Preferably, the term "groove" refers to the actuating recess being open in the area of ​​the connection opening of the connector body, such that in a top view of the connector body, the actuating recess has a generally U-shaped profile in the form of a groove. The actuating recess is advantageously designed such that the actuating portion of the verification element can engage through the wall of the connector body, thereby contacting the connector plug or the actuating element of the connector plug. The circumferential extension of the actuating recess advantageously corresponds at least to the circumferential extension of the actuating recess. Preferably, the axial extension of the actuating recess corresponds at least to the travel path of the actuating portion of the verification element between axially outward and axially inward positions.

[0034] According to possible embodiments, the connector is designed such that the switching circuit is disconnected when the connector plug is fully inserted into the connector body. Therefore, the antenna and / or chip can be arranged in the axially inward half of the verification element. Thus, at least one contact point of the closure is advantageously arranged between the axially outward front of the actuating portion and the antenna, preferably in an axially outward position and / or an axially inward position and / or an intermediate position. Therefore, the antenna is located as far away as possible from the retainer, which may also comprise metal. Due to this arrangement, the less interference field from the metal retainer will interfere with the antenna's transmitted signal. Preferably, the antenna is arranged in the axially inward third or axially inward half of the verification element. Preferably, the chip and / or antenna is arranged axially inward relative to at least one switch contact on the verification element. Advantageously, the connector is designed such that the verification element can present two defined axial positions, and more preferably, precisely present two defined axial positions.

[0035] Possibly, the connector is designed such that the switching circuit is closed when the connector plug is fully inserted into the connector body. Therefore, the normal state of the switching circuit is closed, ensuring that at least one switch contact and the closing element are in contact with each other under normal conditions, thereby reducing the impact of corrosion. Advantageously, the chip and / or antenna are arranged axially outward on the verification element relative to at least one switch contact. Preferably, the connector is designed such that the verification element can present at least three defined positions relative to the connector body.

[0036] Preferably, the connector body has at least one fixing element to secure the connector plug and prevent the connector plug from twisting within the connector body.

[0037] Advantageously, the connector body corresponds to the VDA guideline, for example, having a nominal width NW (inner diameter of the connector plug) of 8 mm, 12 mm, 16 mm, 20 mm, 26 mm, 32 mm, 40 mm, or 50 mm. Advantageously, at least one retaining element corresponds to a slotted recess on the inner side of the connector body, in the region of the connecting portion. The retaining element advantageously extends axially in such a way that, during the insertion of the connector plug into the connector body, a complementary, spring-like retaining member of the connector plug engages with the retaining element. The retaining member of the connector plug and the retaining element of the connector body advantageously form a tongue-and-groove connection. Preferably, the connector body includes two retaining elements. Preferably, the two retaining elements are arranged completely opposite to each other relative to the central axis of the connecting portion. One or more retaining elements are advantageously located in the connecting portion of the connector body. According to a preferred embodiment, the actuating recess transitions into the retaining element in an axially outward direction. In the case of a VDA design, it is preferable that the actuating recess functions as both a retaining element and an actuating verification element.

[0038] According to a preferred embodiment, the switch has two switch contacts. Preferably, each of the two switch contacts is assigned a contact point. The connector is advantageously designed such that the closure contacts both switch contacts or contact points in the closed state of the switch circuit, thereby preferably short-circuiting the two switch contacts. Advantageously, the closure has two contact points, wherein each of these two contacts advantageously contacts a corresponding contact point of one of the two switch contacts. The closure can be arranged on the connector body or on a verification or retainer. If the closure is arranged on a verification / retainer, the connector body includes a pressure element for pressing the closure in the direction of the switch contacts for contact purposes. If the closure is located on the connector body, the verification element is preferably designed such that the closure contacts—preferably simultaneously—both switch contacts during the transition of the connector plug to the connected state. Preferably, each of the two switch contacts is designed as a rectangular contact strip, particularly contact strips of equal length.

[0039] Advantageously, the verification element at least partially covers the closure element in at least one axial position—preferably in all axial positions—and preferably completely covers the closure element. This provides protection for the switching circuit. Depending on the possible design, the closure element is arranged on or fastened to the connector body. Advantageously, the closure element includes a fastening portion for fastening the closure element to the connector body and a contact portion for contacting one or more switch contacts. Preferably, the connector body includes a closure element receiving portion for receiving the closure element. Advantageously, the closure element receiving portion is designed as a recess located on the outer side of the connector body. In the state of being mounted on the connector body, preferably, the verification element at least partially covers the closure element receiving portion in an axially outward and / or axially inward and / or intermediate position of the verification element. It is highly recommended that the closure element be invisible at any position of the verification element on the connector body. Advantageously, the closure element contacts one or more switch contacts arranged on the inner side of the verification element. Possibly, the fastening portion of the closure element is clamped in or cast into the closure element receiving portion. Preferably, in a side view of the connector body or in a longitudinal section of the connector body, the contact portion of the closure is obliquely aligned with the central axis of the connecting portion. Advantageously, in a longitudinal section of the connector body, the contact portion extends obliquely relative to the central axis of the connecting portion and extends radially outward in an axially inward direction.

[0040] One or more of the objectives mentioned at the beginning are achieved by a coupling device comprising a coupling connector—particularly the coupling connector according to this disclosure—and a coupling plug insertable into the coupling connector, wherein the coupling connector comprises a connector body having a coupling portion and a connecting portion, wherein the coupling connector is designed to be reversibly and detachably connected to the coupling plug, wherein the connecting portion is designed to be connected to, or designed to be connected to, a pipe or unit, wherein the coupling portion and the connecting portion are fluidly connected to each other via an internal channel. The coupling connector includes a retainer for locking the coupling plug in the connector body, wherein the retainer is movably mounted on the connector body, wherein the coupling connector has a verification element for indicating the connection status between the coupling plug and the coupling connector, wherein the verification element is movably mounted on the connector body, and the verification element indicates the connection status by its position relative to the connector body, wherein the verification element is disposed on the outer side of the connector body. The connector and plug are designed such that the actuating element of the plug contacts the actuating part of the verification piece during the insertion of the plug into the connector body, causing the verification piece to be axially displaced inward relative to the connector body during the continuous insertion of the plug.

[0041] Recommendedly, the connector plug has a locking element, wherein, preferably, the locking element is designed such that the locking element latches against the retainer during insertion of the connector plug into the connector body. Advantageously, the connector plug includes a sealing surface, wherein, preferably, the sealing surface is axially positioned outward relative to the locking element. During insertion of the connector plug into the connector body, the sealing surface advantageously forms a fluid-sealed contact with the seal. The actuating element advantageously projects radially relative to the sealing surface. The connector plug may have a conical portion, advantageously located between the locking element and the sealing surface. Preferably, the conical portion is designed such that, during insertion of the connector plug into the connector body, the conical portion opens the retainer or the latching arm of the retainer. Preferably, the connector plug corresponds to a VDA guide for fluid coupling.

[0042] Advantageously, the connector includes an end portion, wherein, preferably, a locking element is arranged between the sealing surface and the end portion. Preferably, the connector includes an intermediate portion. The intermediate portion is advantageously located between the end portion and the sealing surface, and advantageously, the intermediate portion includes the locking element. Preferably, at least in terms of spacing, the sealing surface of the connector is designed to be cylindrical.

[0043] Advantageously, the connector includes a seal for fluid-tight connection with the connector plug. Advantageously, the seal has a resiliently designed sealing ring, and preferably, a seal retainer. Advantageously, the seal retainer secures the sealing ring in the connector body in such a way that the sealing ring will not detach from the connector body in an axially outward direction. For example, the seal retainer may be annular in design, and advantageously, the seal retainer may latch into the connector body. Preferably, the sealing surface of the connector plug is designed to be complementary to the seal or sealing ring. The sealing ring, connected to the sealing surface of the connector plug, advantageously creates a frictional connection to establish a fluid seal for the coupling device.

[0044] One or more of the objectives mentioned at the beginning are achieved by using a coupling connector or coupling device according to this disclosure in a motor vehicle.

[0045] One or more of the objectives mentioned at the beginning are achieved by a method for connecting a coupling connector—particularly the coupling connector according to this disclosure—and a coupling plug that can be inserted into the coupling connector, wherein the coupling connector includes a connector body having a coupling portion and a connecting portion, wherein the coupling portion is designed to be reversibly and detachably connected to the coupling plug, wherein the connecting portion is designed to be connected to a pipe or unit, or designed to be connected to a pipe or unit, wherein the coupling portion and the connecting portion are fluidly connected to each other through an internal channel. The coupling connector includes a retainer for locking the coupling plug in the connector body, wherein the retainer is movably mounted on the connector body, wherein the coupling connector has a verification element for indicating the connection status between the coupling plug and the coupling connector, wherein the verification element is movably mounted on the connector body, and the verification element indicates the connection status by its position relative to the connector body, wherein the verification element is disposed on the outer side of the connector body. The connector and plug are designed such that the actuating element of the plug contacts the actuating part of the verification piece during the insertion of the plug into the connector body, causing the verification piece to be axially displaced inward relative to the connector body during the continuous insertion of the plug. Attached Figure Description

[0046] The present disclosure is described in the following figures with reference to exemplary embodiments. As shown in the figures: Figure 1 This is a perspective view of the connection device according to the present disclosure, wherein the connection connector and the connection plug are in a fully connected state. Figure 2 yes Figure 1 The image shows a perspective view of the connector, but this connector lacks a verification part. Figure 3 yes Figure 1 A perspective view of the connector plug in the middle. Figure 4A yes Figure 1 External perspective view of the verification document. Figure 4B yes Figure 4A The inner view of the verification document. Figure 5 yes Figure 1 The diagram shows a longitudinal cross-section of the connecting device, but in this view, the connecting plug is not yet latched with the connecting connector. Figure 6 yes Figure 5 The longitudinal cross-sectional view of the connecting device in the latched state at this moment, and Figure 7 It shows Figure 6The latching state of the connecting device in the figure, wherein the verification piece is shown in a third position with further axial inward positioning. Detailed Implementation

[0047] Figure 1 The accompanying drawings show coupling devices 1 and 5 according to the present disclosure, which include a coupling connector 1 and a coupling plug 5. In this and subsequent drawings, the coupling plug 5 is only shown incompletely. Specifically, the drawings lack the further end of the coupling plug that is axially inwardly positioned with respect to a receiving portion for a fluid conduit or pipe. For example, the receiving portion can be designed such that the fluid conduit can be inserted into the receiving portion of the coupling plug and connected thereto by welding—particularly by laser welding—to the coupling plug 5. However, for simplicity, Figure 1 , Figure 3 as well as Figures 5 to 7 The connector 5 is always shown as cut off in the axial inward direction, so the left end of the connector 5 is always shown.

[0048] According to this disclosure, Figure 1 The connector 1 includes a connector body 2, a retainer 7, and a verification element 8. In this exemplary embodiment, the retainer 7 and the verification element 8 are designed as separate elements. Possibly, the retainer 7 is designed as a generally U-shaped wire support. Although, preferably, the connector 1 is designed similarly to a VDA connector, this disclosure also includes SAE embodiments not depicted herein. Figure 1 The connector body 2 has a connecting portion 3 and a connecting portion 4. The connecting portion 3 is designed to be reversibly and detachably connected to the connecting plug 5. The connecting portion 4 is designed to be connected to a pipe or unit not shown here.

[0049] It is also possible that the connection portion 4 forms a one-piece or integral connection with the pipe or unit. Therefore, the connection portion 4 can also be designed as a connection that can only be destructively separated, but such a destructively separable connection is not shown here. The connector 5 can also be connected to a unit not shown here, and can be manufactured in an injection mold together with at least one part of the unit. Typical applications of the connection devices 1, 5 according to this disclosure include, in particular, fluid transport systems inside motor vehicles.

[0050] Figure 2The connector 1 without the verification piece 8 is shown, with the upper side of the connector body 2 visible. Preferably, the closure 13 is located in the closure receiving portion 25 of the connector body 2. In this exemplary embodiment, the closure 13 is made of metal, and preferably, the closure 13 is designed as a leaf spring. Preferably, the leaf spring includes a portion placed in the closure receiving portion 25 and an upwardly projecting portion at an angle relative to that portion. In the longitudinal section of the connector body 2, advantageously, the angled legs of the closure 13 are tilted upwards in an axially inward direction.

[0051] Preferably, the connector body 2 has at least two—preferably at least three—positioning elements 26, which are, for example, in the form of latching recesses. Advantageously, the positioning elements are arranged sequentially along the axial direction, and preferably, the positioning elements are located on the outer side of the connector body 2. It is possible that, at the same axial height, each of the positioning elements 26 on the connector body 2 is assigned an additional accompanying positioning element 26. In a top view of the connector body 2, advantageously, some of the positioning elements 26 are arranged on one side of the closure 13, while other positioning elements 26 are located on the other side of the closure 13.

[0052] Advantageously, the connector body has at least one guide member 28 for guiding the verification member 8. Advantageously, the connector body 2 includes at least two guide members 28, which are arranged symmetrically with respect to the longitudinal axis of the connecting portion 3 in a top view. For example, at least one guide member 28 may be designed as a recess or a protrusion. Particularly preferred is that the axial extension of one or more guide members corresponds at least to the distance between the axially furthest positioning elements 26 or the axial travel path of the verification member 8.

[0053] Preferably, the connector body 2 includes an activation recess 18. Preferably, the activation recess 18 is continuous in the radial direction, such that the activation recess 18 establishes a connection between the interior and exterior of the connector body 2. In a top view of the connector body 2, the activation recess may be designed circumferentially or as a window. It is possible that the activation recess 18 extends to the axial outer end of the connector body 2, and thus to the connection opening 24 of the connector opening 2, such that the activation recess 18 is designed as a groove.

[0054] Preferably, the embodiment of the coupling bushing 1 in the form of a VDA quick connector includes two flanges in the region of the retainer 7, the two flanges being arranged sequentially in the axial direction. Possibly, one of the flanges—preferably the axially more outward flange—forms the stop 39 of the verification member 8, which will be described in more detail below. In this exemplary embodiment, the retainer 7 has an actuating portion 21, and preferably, also has two latching arms 22. Preferably, the actuating portion 21 corresponds to the U-shaped base of the retainer 7. Advantageously, the two latching arms 22 constitute the U-shaped legs of the U-shaped retainer 7. Possibly, the ends of the latching arms 22 extend in the axial direction, such as... Figure 2 It is clearly visible.

[0055] Preferably, the circumferential extensions of the two flanges substantially correspond to the circumferential extensions of the operating portion 21. The operating portion 21 is at least partially and advantageously arranged between the two flanges in the axial direction. In a front view of the connector 1 or connector body 2, it is possible that the operating portion 21 of the retainer 7 has a radially raised portion, and preferably, this portion is located in the middle of the U-shaped base. In particular, this raised portion can be actuated by hand or by means of a tool. When the retainer 7 is in the fully inserted position inside the connector body 2, preferably, the latch arm 22 is located in the latch arm window 23 of the connector body 2. It is possible that the connector body 2 defines a partially inserted position of the retainer 7, for example, by a corresponding latch receiving portion or latch protrusion.

[0056] Such as combination Figure 2 and Figure 5 Clearly, the connector 1 preferably has seals 29 and 30, which preferably have a sealing switch 29 that advantageously secures the sealing ring 30 within the connector body 2. Advantageously, the seal retainer 29 abuts against the connecting portion 3. In contrast, the connecting portion 4 may be defined as the overlapping portion between the connector body 2 and a conduit (not depicted here). Advantageously, the connecting portions 3 and 4 are fluidly connected to each other via an internal channel 6 and may include an axially oriented intermediate portion of the connector body 2. Specifically, this intermediate portion includes the seal retainer 29, the sealing ring 30, and a shoulder 38 of the connector body 2, see [link to relevant documentation]. Figure 5 .

[0057] Preferably, Figure 3The connector 5 includes a connector opening 31, which preferably extends in a circular manner along an axially inward direction. Further along the axially inward direction, the connector 5 preferably includes a sealing surface 15, an unfolding surface 32, a locking element 14, and / or at least one retaining member 20. In this exemplary embodiment, the connector 5 includes two retaining members 20, which are advantageously positioned completely opposite each other in the circumferential direction.

[0058] Preferably, the unfolding surface 32 extends axially inward, particularly tapering, such that during the introduction of the connector plug 5, the latching arm 22 of the retainer 7 is separated, and reset energy is stored in the retainer 7. If the connector plug 5 is fully inserted, the latching arm 22 reaches the slotted locking element 14 and latches in it. Preferably, the sealing surface 15 is cylindrical and advantageously sized in such a way that it forms a fluid-sealed frictional connection with the sealing ring 30 of the connector 1. Particularly preferred is that the connector plug 5 has an actuating element 16. In this exemplary embodiment, the actuating element 16 is designed as the front of one of the two retaining members 20. Preferably, the retaining member 20 is designed as a spring-like element that advantageously engages in the slotted retaining element 19 of the connector body 2.

[0059] according to Figure 4A In this exemplary embodiment, preferably, the verification element 8 includes an actuation portion 17, and more preferably, the actuation portion 17 interacts with the actuation element 16 of the connector plug. This will be combined with the following... Figures 5 to 7 This will be described in more detail. Advantageously, the verification element 8 has at least one positioning member 27, and preferably, two positioning members 27. Advantageously, the verification element 8 includes at least one guide element 37, and preferably, at least two guide elements 37. Due to the selected viewing angle, the second guide element 37... Figure 4A Not visible in the middle. The verification piece 8 may have a stop 33, which advantageously includes at least one stop hook 34, and preferably includes two stop hooks 34.

[0060] The inside of verification piece 8 can be Figure 4B As seen in the example, in this exemplary embodiment, the positioning member 27 is designed as a spring-loaded element. Preferably, at least one positioning member 27 includes a spring arm 36, which is advantageously formed by a partial circumferential slit on the wall of the verification member 8, such as a U-shaped slit. Each positioning member 27 may have a protrusion 35, which, in this exemplary embodiment, protrudes radially inward and may be configured to engage. Figure 2The corresponding positioning element 26. The second guiding element 37 can also be in Figure 4B As seen in the image. Advantageously, the two guide elements 37 project radially inward, allowing the two guide elements 37 to engage with... Figure 2 In the complementary guide component 28 of the connector body, the two guide elements 37 limit the axial mobility of the verification piece 8 on the connector body 2.

[0061] Preferably, the verification element includes a chip 10, an antenna 11, and / or at least one switch contact 12. In this exemplary embodiment, elements 10, 11, and 12, together with the closure 13 of the connector body 2, form components of the transmitter 9. The chip 10, switch contacts 12, and closure 13 advantageously form switch circuits 10, 12, and 13. It is highly advantageous that the chip 10 is an RFID chip, making the transmitter 9 an RFID transmitter. The chip 10 is advantageously connected to the antenna 11, which responds to an RFID reader in a known manner. It is highly preferred that the chip 10 is electrically connected to two switch contacts 12 in the form of rectangular contact strips. The antenna 11 is advantageously arranged in the axially inward half of the verification element 8. It is possible that the chip 10 is located in the axially inward half of the verification element 8. It is highly preferred that the chip 10 is designed to detect whether the two switch contacts 12 are electrically connected to each other. Especially preferred is that the chip 10 is designed to store the connection state between the two switch contacts 12 and to disclose the connection state in communication with the reader.

[0062] Figures 5 to 7 The connection process between the connector plug 5 and the connector 1 is shown. Figure 5 The time points of the connection process are depicted, at which point the actuating element 16 of the connector 5 first contacts the actuating portion 17 of the verification member 8 inside the actuating recess 18. At this point, the sealing surface 15 has reached the sealing ring 30, thereby establishing a fluid-tight connection between the connector 5 and the connector 1. However, in this exemplary embodiment, the locking element 14, located at the height of the actuating element 16, has not yet reached the retaining member 7. This is particularly evident from the fact that the actuating element 16 is not yet at the same axial height as the operating portion 21. Therefore, in Figure 5 In the state of connection shown, the connector plug 5 is not yet locked in the connector 1. This can also be seen from the fact that a slightly larger gap still exists between the shoulder 38 of the connector body 2 and the plug opening 31 of the connector plug 5.

[0063] exist Figure 5At the point in time shown in the connection process, the closure 13 and the two switch contacts 12 are still electrically connected to each other. Therefore, the reader will acquire an "electrically connected" status at this point in time and thus conclude that the connector plug 5 has not yet been locked into the connector 1. Figure 5 In the position shown, the verification piece 8 is located at the outermost position in the axial direction relative to the connector body 2. This is particularly evident from the position of the stop hook 34 relative to the stop portion 39 of the flange, which is located further outward in the axial direction.

[0064] Figure 6 The diagram illustrates the connection state between the connector plug 5 and the connector 1, in which the connector plug 5 remains locked within the connector body 2. This can be seen from the fact that the actuating element 16—and therefore the locking element 14 at the same height—is located at the same axial height as the retaining element 7. Furthermore, the distance between the plug opening 31 and the shoulder 38 is significantly reduced, leaving only a small gap between the two elements. Consequently, the actuating element 16 causes the actuating portion 17 to shift axially inward relative to the connector body 2 within the actuating recess 18.

[0065] In this exemplary embodiment, in Figure 6 In the indicated state, the two protrusions 35 of the positioning component 27 of the verification piece 8 are now located in the corresponding intermediate positioning element 26 of the connector body 2. This movement causes the chip 10, antenna 11, and especially the two switch contacts 12 to shift axially inward relative to the closure 13, so that the switch contacts 12 and the closure 13 are no longer in electrical contact with each other. Therefore, the switch circuits 10, 12, and 13 are disconnected, wherein, preferably, the chip 10 records and stores this change in electrical state. When reading the chip 10, the reader will conclude that the connector plug 5 remains locked in the connector 1.

[0066] Furthermore, in this exemplary embodiment, the verification component 8 can also indicate the connection status optically. Figure 5 The stop hook 34 of the stop member 33 of the verification component 8 is approximately flush with the connector body 2 at the axial outer end of the connecting connector 1. Figure 6 This is no longer the case in China. Differently, Figure 6 The inner axial end of the verification piece 8 is approximately flush with the step 40 of the connector body 2.

[0067] Figure 7The third state of the verification element 8 is shown. Therefore, the protrusion 35 of the verification element 8 is now located at the axially inwardly positioned positioning element 26 of the connector body 2. This position is not achieved by the still-sealed and locked connector plug 5, but by the manual actuation of the verification element 8. This creates a gap between the actuating element 16 of the connector plug 5 and the actuating portion 17 of the verification element inside the actuating recess 18. In this exemplary embodiment, the actuating element 17 now rests against the front of the actuating recess 18.

[0068] In addition, Figure 7 In the indicated state, the distance between the closure 13 and the two switch contacts 12 is further increased, while the stop hook 34 at this moment touches one or more stop portions 39, thereby marking the position of the verification piece 8 at its innermost axial position. Figure 1 This state is also depicted in the text. For example... Figure 7 It can be further seen that the inner end of the verification piece 8 protrudes inward in the axial direction relative to the step 40 of the connector body 2 at this moment.

[0069] The purpose of the third positioning element 26, located at the innermost point along the axial direction, is to indicate the connection status tactilely. This is because although the verification element 8 can be obtained from... Figure 7 Move manually to the position shown. Figure 6 The location shown is real, and therefore tactilely real, but this is from... Figure 6 The position in the middle continues to shift Figure 5 The position in the middle is not applicable. By shifting verification piece 8, the user does notice that verification piece 8 can be... Figure 7 The location of verification document 8 and Figure 6 The location of verification document 8 is switched back and forth, but this is for Figure 5 The state in the middle is invalid. Therefore, the user cannot move the verification piece 8 axially outward to the point where the stop hook 34 reaches the axial outer end, and thus cannot move it to the connection opening 24 of the connector body 2. Based on this difference, the user can be certain that they have not applied too little force to move the verification piece 8. However, the user based on Figure 6 The positions shown and Figure 7 The possible manual displacement between the indicated positions shows that they did apply sufficient force, and due to the locking of connector 5, it is clearly impossible to reach it intentionally. Figure 5 The location of the verification piece. Therefore, the connection devices 1 and 5 provide optical, tactile, and electronic indications of the connection status between the connection plug 5 and the connection connector 1.

[0070] List of reference numerals

Claims

1. A connection connector for automatically acquiring connection status, the connection connector comprising a connector body having a connecting portion and a coupling portion, wherein, The connecting portion is designed to reversibly and detachably connect to a complementary connecting plug, wherein the connecting portion is designed to be adapted for connection to a pipe or unit, and wherein the connecting portions and the connecting portion are fluidly connected to each other via internal channels. The connector includes a retainer for locking the connector plug within the connector body, the retainer being movably mounted on the connector body. The connector also has a verification element for indicating a connection state between the connector and the connector plug, the verification element being movably mounted on the connector body and indicating the connection state by its position relative to the connector body. In a connection state where the connector is not connected to the connector plug, the verification element is axially movably mounted on the connector body. The connector includes a transmitter for transmitting a signal, wherein the transmitter is designed to transmit the connection status. The transmitter includes a chip, an antenna, and a switch, wherein the switch has at least one switch contact and a closing element, and wherein the chip, the at least one switch contact, and the closing element are components of a switching circuit. The switching circuit is in an open or closed state depending on the position of the closure relative to the at least one switch contact. The connector is designed such that the state of the switching circuit changes during insertion of the connector plug into the connector body. The transmitter is designed such that the changed state can be stored in the chip and retrieved by a reader via the transmitted signal. The chip and / or the antenna and / or the at least one switch contact are arranged on the verification element and / or the retaining element.

2. The connector according to claim 1, wherein, The retainer and the verification component are separately designed parts, and the retainer and the verification component have different directions of movement during displacement on the connector body.

3. The connector according to claim 1 or 2, wherein, The closure has a movable spring-loaded design.

4. The connector according to claim 1 or 2, wherein, The at least one switch contact and / or the chip and / or the antenna are arranged or fastened on the side of the verification element or the retainer facing the connector body.

5. The connector according to claim 1 or 2, wherein, The verification component is arranged on the outside of the connector body.

6. The connector according to claim 1 or 2, wherein, The verification component can be positioned in at least two defined locations relative to the connector body.

7. The connector according to claim 1 or 2, wherein, The verification component includes an actuating portion, wherein the coupling connector or the verification component is designed such that the coupling plug contacts the actuating portion during insertion into the connector body.

8. The connector according to claim 1 or 2, wherein, The connector body has an actuation recess in the form of a groove or window, the actuation recess extending radially through the wall of the connector body, such that the actuation portion of the verification piece protrudes through the wall of the connector body.

9. The connector according to claim 1 or 2, wherein, The connector is designed such that, during the insertion of the connector plug into the connector body, it moves the verification component from an axially outward position to an axially inward position.

10. The connector according to claim 1 or 2, wherein, The connector body has at least one fixing element to secure the connector plug and prevent the connector plug from twisting within the connector body.

11. The connector according to claim 1 or 2, wherein, The retainer has a U-shaped design and can be inserted into the connector body in the radial direction.

12. The connector according to claim 1 or 2, wherein, The switch includes two switch contacts.

13. The connector according to claim 1 or 2, wherein, The verification element at least partially or completely covers the closure element in at least one axial position or in all axial positions.

14. A method for connecting a coupling connector according to claim 1 or 2 and a coupling plug capable of being inserted into said coupling connector, wherein, The connector includes a connector body having a connecting portion and a connecting part, wherein the connector is designed to be reversibly and detachably connected to the connector plug, wherein the connecting part is designed to be connected to a pipe or unit, or designed to be connected to a pipe or unit, wherein the connecting portion and the connecting part are fluidly connected to each other through an internal channel. The coupling connector includes a retainer for locking the coupling plug within the connector body, wherein the retainer is movably mounted on the connector body. The coupling connector also has a verification element for indicating the connection status between the coupling plug and the coupling connector, wherein the verification element is movably mounted on the connector body, and the verification element indicates the connection status by its position relative to the connector body. The verification element is disposed on the outer side of the connector body. The connector and the plug are designed such that, during the insertion of the plug into the connector body, the actuating element of the plug abuts against the actuating portion of the verification piece, causing the verification piece to shift axially inward relative to the connector body as the plug continues to be inserted.

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