Coupling connector with automatically activated retaining element

Abstract

The coupling connector 1 has a coupling body 2 and a plug lock 7. The plug lock 7 comprises a holding piece 8 and a check piece 9, wherein the plug lock 7 can be inserted into the coupling body 2 in a radial direction. The check piece 9 has two leg portions 11a, 11b and a back portion 12, wherein the end portions of the leg portions 11a, 11b facing away from the back portion 12 are configured to a bottom portion 13 of the coupling body 2. In the case of an inserted coupling plug 3 into the coupling connector 1, the plug lock 7 is automatically transferred from a disengaged position to an engaged position. The coupling connector 1 is designed in such a way that the bottom side end portions of the leg portions 11a, 11b remain at a distance from each other when being deflected by the coupling plug 3.

Description

Technical Field

[0001] This invention relates to coupling connectors. Background Technology

[0002] Such a connector is known from US 10,808,872B2. The test piece of the plug lock is connected to the retainer as a single piece or integrally with the retainer, and the test piece, like the retainer, has a generally U-shaped design. The U-shaped back of the test piece is flush with the connector body at its end and transitions to the U-shaped base or back of the retainer. The test piece also includes two legs, each connected to the back of the test piece, and can be radially extended relative to each other by a circumferential clamp of the connector plug. In the disengaged position of the plug lock and before insertion of the connector plug, the ends of the closed and thus relaxed legs abut against corresponding protrusions on the connector body. The two protrusions are arranged inside the connector body and ensure that the plug lock cannot be further inserted into the connector body by pressing on the back. This provides the user with a partial automatic retraction or automatic activation function. This is primarily because the defined disengaged position allows the plug lock to automatically retract during insertion of the connector plug.

[0003] When inserting the connector into the connector body according to US 10,808,872B2, the connector or its circumferential clamp first elastically deflects the test piece legs axially inward until the test piece legs abut against the connector body. Continuing insertion of the connector causes the legs to spread radially, so that the U-shaped legs no longer abut against the protrusions. This releases the restoring energy stored in the legs, causing the ends of the legs to slide along the ramps of the connector body. Since the two ramps taper diagonally relative to each other in the cross-section and insertion direction of the connector lock, the connector lock is further pulled radially inward into the connector body until it reaches the engagement position. The retainer now engages behind the circumferential clamp of the connector, securing the connector and preventing it from being pulled out of the connector body. Therefore, the only remaining task for the user of this fluid coupling device is to insert the connector into the connector, further reducing installation effort. This is particularly advantageous, for example, in situations where installation space is very limited, making it impossible for the installer to grip the connector with their hands to manually push the connector lock into place.

[0004] However, a drawback has been found: after a period of time and in certain situations, for different designs from different manufacturers, the indication function is no longer provided because the plug lock can be pushed into the coupling body even without the connecting plug. It has also been noted that after a period of time and in certain situations, the plug lock retracts only partially into the coupling body. Therefore, the object of the present invention is to provide a coupling connector that enhances the functionality of the inspection piece or plug lock, and thus provides a longer service life for the inspection piece or plug lock. Furthermore, fluid coupling devices or coupling connectors are known in practice in which the plug lock can only be laboriously moved to the retracted position, for example, using a lever operation with a screwdriver. Therefore, the present invention is based on the preferred objective of providing a mechanism for releasing the fluid coupling device that is particularly user-friendly. Summary of the Invention

[0005] One or more of the purposes mentioned are achieved by a quick-connect device having the following characteristics.

[0006] This invention was initially based on the understanding that the disadvantages mentioned at the outset can be attributed to the instability of the legs of the inspection piece. This is because the legs of the inspection piece must be at least partially relatively thin due to their unfolding capability. Simultaneously, the legs must rest precisely on the protrusions in the disengaged position to ensure that the indicating function is retained. It was found that the disadvantages mentioned at the outset are caused by improper handling during assembly and maintenance and / or material degradation that occurs with increased service life. Both improper handling and material degradation negatively affect the spring elasticity of the U-shaped legs, thus potentially causing premature insertion and / or insufficient retraction of the plug lock into the connecting body.

[0007] This invention is also based on the understanding that by ensuring the legs maintain a distance from each other when the connected plug is axially deflected, and in particular, by preventing the legs from unfolding, the inspection piece or retraction mechanism of the connector can be decisively stabilized. The ability to unfold inherently creates relatively movable legs, making the spring-supported locations—generally the transition from the legs to the back—a weak point. The legs may initially have sufficient spring elasticity, but this elasticity tends to weaken over time. This becomes particularly important when loads are applied to the spring-supported locations, such as when performing maintenance and the fluid connection device is disassembled and then reassembled. By preventing radial deflection or unfolding of the legs, the connector or plug lock is significantly upgraded, thereby achieving the purpose mentioned at the outset.

[0008] The term "partially automatic" preferably refers to the automatic retraction of the plug lock or retainer from the disengaged position to the engaged position after the connector plug has preferably been fully and advantageously manually inserted into the connector. The expression "removable" advantageously refers to a connection that is released in a reversible and therefore non-destructive manner.

[0009] The plug lock can be designed as a single piece, such that the retainer and inspection piece can only be separated from each other in a destructive manner. The plug lock is advantageously designed as a single unit and can be manufactured, particularly, by injection molding. The plug lock can also employ a multi-part design, such that the retainer and inspection piece are separate parts, preferably each manufactured by injection molding. According to an embodiment, the inspection piece and retainer can be assembled into a multi-part plug lock via form-fit locking. The retainer and inspection piece can be inserted into the connecting body from different directions. Preferably, the retainer and inspection piece can be inserted into the connecting body from the same direction.

[0010] The coupling body advantageously includes a first body end and a second body end. The first body end is configured to, or preferably must be configured to, a coupling plug. The plug section of the coupling body is preferably defined by the first body end. The end of the coupling plug advantageously defines the axial extension of the plug section in the axial direction. The coupling body advantageously includes a connecting section for connecting a pipe or assembly. In the case of an assembly, this may involve, for example, a pump, tank, or nozzle. The coupling body advantageously includes a fluid passage connecting the plug section to the connecting section. The coupling body may have a transition section, wherein the transition section is preferably arranged between the plug section and the connecting section. The connecting section may be designed for reversible or irreversible connection with a pipe or assembly. In the case of a reversible connection with a pipe, the connecting section may have a circumferential groove for creating a press fit. Preferably, the connecting section is, or can be, connected to the pipe or assembly by welding—particularly by laser welding. The connecting section may include a receiving portion for introducing the section into the pipe or assembly. According to the embodiments, the connecting body or connecting segment can be integrated into the assembly as a single piece or as an integral unit.

[0011] Preferably, the connecting body is manufactured as a separate part, particularly as an injection-molded part. The connecting body can be designed as a single piece or as an integral unit. The connecting device can employ a multi-part design. According to a preferred embodiment, the connecting body comprises two or more parts that are connected to each other by means of a latching connection. The connecting body can be designed to be straight or angled. When the connecting body has a straight design, the central axis of the plug segment extends parallel to the central axis of the connecting segment and is preferably concentric with the central axis of the connecting segment. When the connecting body is designed to be angled, in the longitudinal section of the connecting body, the central axis of the plug segment extends at an angle to the central axis of the connecting segment. The central axis of the plug segment defines the axial, radial, and circumferential directions of the plug segment. In a front view of the first body end or in a cross-section of the connecting body, the radial direction can have two directional components. The insertion direction of the plug lock in the connecting body can be understood as the first direction or radial direction component. The direction or directional component referred to as the lateral direction can extend perpendicular to the insertion direction and perpendicular to the axial direction of the plug segment. The intermediate axis of the connecting section can define the axial direction, radial direction and circumferential direction of the connecting section.

[0012] The connecting body preferably includes a second body end. The second body end advantageously defines the end of the connecting section. The connecting section is advantageously defined by the overlap of the connecting body and the conduit or assembly. A fluid passage advantageously connects the first body end or plug section to the second body end or to the connecting section. The expression "axially inward" preferably refers to the axial direction of the plug section continuing further from the first body end into the connecting body. The term "axially inward" preferably also refers to the axial direction continuing from the plug section or transition section toward the second body end, since the conduit or assembly defines the interior rather than the connecting body.

[0013] The connector plug preferably includes a locking element that preferably interacts with a retaining element of the connector to lock the connector plug into the connector. The connector plug advantageously includes a connecting section for insertion into the connector. The connecting section preferably corresponds to a portion of the connector plug located inside the connector when the connector plug is fully inserted into the connector. The connecting section preferably has a longitudinal axis, which is preferably parallel to and aligned with the central axis of the plug section of the connector body, and particularly preferably concentrically aligned with the central axis of the plug section of the connector body. The longitudinal axis of the connecting section defines the axial, radial, and circumferential directions of the connecting section of the connector plug.

[0014] According to a preferred embodiment, the connector includes a terminal section for hooking onto a pipe or assembly. The terminal section may have similar features to the connecting section of the connector body. Specifically, the terminal section may be designed to hook onto or already hooked onto a pipe or assembly. The connecting section and the terminal section of the connector are advantageously fluidly connected to each other via a flow channel in the connector. The connector may be designed to be straight or angled. The expression "axially inward" regarding the connector refers to the direction from the connecting section toward the terminal section of the connector.

[0015] The connector may have a flange, wherein, in the fully inserted state, the flange preferably abuts against a first body end of the connector body. The locking element preferably projects radially outward relative to the outer side of the connector section. The locking element is preferably designed as at least partially circumferentially clamped, and particularly preferably as fully circumferentially clamped. The locking element is advantageously arranged in the connector section of the connector. According to an embodiment, the locking element may be designed as at least partially circumferentially recessed, and preferably as fully circumferentially recessed. The locking element preferably divides the connector section of the connector into an intermediate section and a sealing section. The intermediate section is advantageously arranged between the locking element and the terminal section. The sealing section is located axially between the locking element and the connector-side end of the connector.

[0016] Preferably, the back of the plug lock is positioned closer to the central axis of the plug segment in the engaged position than in the disengaged position. The back of the plug lock can be configured to the cover of the connector body. The back-to-back end of the leg of the inspection piece is preferably configured to the bottom of the connector body, and in particular, the back-to-back end of the leg of the inspection piece can be referred to as the bottom end of the leg. In the longitudinal section of the connector, preferably, in the disengaged position of the plug lock, the inspection piece or leg can move at least partially axially within the connector body, and preferably cannot move laterally. The bottom ends of the legs preferably maintain the same distance from each other throughout the entire duration of deflection by the connector plug.

[0017] According to a highly preferred embodiment, the connector, connector body, leg, or inspection piece is designed such that, in the disengaged position, the leg cannot deflect laterally within the connector body via the connector plug in the cross-section. According to an embodiment, the connector body, leg, or inspection piece is designed such that, at least temporarily, leg unfolding is prevented during connector plug insertion, and preferably completely, leg unfolding is prevented during connector plug insertion.

[0018] Particularly advantageous is that the inspection piece includes a connecting web, which is arranged opposite the back relative to the central axis of the plug segment in the disengaged position and / or during the engaged position, and connects the legs to each other. This results in a particularly compact or robust inspection piece structure that is not too large and therefore not easily deformed. Thus, the purpose of ensuring a robust, automatic retraction of the plug lock is achieved, while requiring relatively little force to be applied to the connector during insertion. This results in a latching device that functions particularly robustly and reliably over a long period. The back and legs of the plug lock or inspection piece advantageously form a plug opening together, through which the connector protrudes axially in the fully inserted state. The connecting web, together with the legs and back, preferably forms the complete circumferential edge of the plug opening.

[0019] According to a highly preferred embodiment, the connector is designed such that the plug lock can be moved from an engaged position to a disengaged position by actuating the bottom section of the test piece in an axial direction—preferably axially inward. This makes it particularly easy to actuate the plug lock to release it, and achieves the purpose mentioned at the outset of providing a user-friendly mechanism for releasing the fluid connection device. The connector is preferably designed such that the connector plug is pushed from a fully inserted position to a partially inserted position during the transfer of the plug lock from the engaged position to the disengaged position. This allows the user to clearly know that the locking process has ended.

[0020] According to a highly preferred embodiment, the bottom end of the plug lock or inspection piece includes at least one actuating element, and preferably two actuating elements, for moving the plug lock from an engaged position to a disengaged position. At least one actuating element preferably forms the end of one of the two inspection piece legs, wherein a corresponding actuating element preferably forms the end of one of the corresponding two legs. Highly preferred, for better operability, at least one actuating element has a rough or grooved structure. Particularly preferred is that the connecting connector is designed such that, or at least one actuating element is arranged such that, in the engaged position of the plug lock, the actuating element is reachable by hand, and preferably actuated in the axial direction, particularly preferably actuated in an axially inward direction.

[0021] Preferably, in the side view, the legs of the test piece are angled—and preferably bent—outward in an axial direction and follow the insertion direction of the plug lock. This produces a particularly powerful retraction mechanism and advantageously allows the plug lock to have a relatively compact design in the axial direction in the side view.

[0022] The connecting body advantageously has at least one axially inwardly extending protrusion, and preferably two axially inwardly extending protrusions, wherein, in the engaged position of the plug lock, in a side view, at least one protrusion preferably protrudes at least partially in the axial direction through the inspection piece or through one of the legs or the bottom end of the inspection piece. The protrusion, together with the receiving portion of the inspection piece, preferably defines the engaged position of the plug lock. Preferably, at least one protrusion is arranged on the front wall of the first body end. At least one protrusion is advantageously located in the region of the bottom of the connecting body. The protrusion of the connecting body is advantageously configured to each of the two legs. In a side view, in the engaged position of the plug lock, at least one protrusion is particularly preferably fully protruding in the axial direction through the inspection piece or through at least one of the legs. In a side view, at least one protrusion advantageously tapers in the axially inward direction. The protrusion advantageously includes a latch shoulder for latching with the inspection piece or with one of the two legs.

[0023] Preferably, in the front view, the plug lock or inspection piece includes at least one receiving portion and preferably two receiving portions, wherein at least one receiving portion is advantageously designed to latch with an element of the connecting body, preferably with at least one protrusion. At least one receiving portion is advantageously configured to be attached to one of the two legs. At least one receiving portion is advantageously arranged in the bottom half or bottom third of the inspection piece. The inspection piece preferably includes at least one terminal element, and preferably two terminal elements. The bottom end of at least one receiving portion is advantageously formed by a terminal element that prevents the plug lock from being unintentionally pulled out of the connecting body. In the side view, the terminal element advantageously tapers in an axially outward direction. Because the protrusion tapers in an axially inward direction and the terminal element tapers in an axially outward direction, axial deflection of the inspection piece or legs can be converted into a radial retraction direction. Particularly preferably, in the side view, at least one protrusion has a retraction ramp on its radially outer side. The retraction ramp is preferably designed such that, in a side view, the inspection piece or leg or end element can slide along the retraction ramp, such that the axial tension of the inspection piece is converted into radial inward or radial outward movement.

[0024] It is particularly preferred that the bottom of the connecting body has at least one bottom opening, and preferably two bottom openings. The connecting connector, connecting body, or inspection element is advantageously designed such that, in a side view, during the transition from the disengaged position to the engaged position, the legs at least partially slide through at least one bottom opening. At least one bottom opening is preferably defined by the fact that, in a side view, an imaginary line continues to be drawn in an axially inward direction from the axially inward end of at least one protrusion. In a side view, at least one bottom opening is advantageously arranged axially inward from at least one protrusion. During the transition from the disengaged position to the engaged position, the inspection element preferably protrudes only temporarily through the bottom opening. The bottom opening allows the user to actuate the inspection element or actuating element to move the plug lock from the engaged position to the disengaged position.

[0025] In a side view or longitudinal view, in the disengaged position, the section of the inspection piece or leg is preferably located radially between the bottom or at least one protrusion and the retainer or the holding section of the retainer. This results in a compact structure for the connector. The retainer or holding section and the bottom end of the inspection piece or leg or terminal element preferably overlap each other in the axial direction. It is highly preferred that at least one rear section of the inspection piece or leg is arranged axially inward relative to the retainer or holding section in the longitudinal section. In the longitudinal section or in a side view, it is particularly preferred that a receiving space for a locking element for receiving the connector plug is arranged in the rear section of the plug lock between the retainer and the inspection piece.

[0026] According to a highly preferred embodiment, the inspection piece has a contact surface for directly or indirectly contacting the connector plug, and preferably directly contacting the connector plug. The connector, plug lock, or inspection piece is preferably designed such that the contact surface is arranged so that, when the plug lock is in the disengaged position, it is opposite to the back of the inspection piece relative to the central axis of the plug segment. Therefore, a force is applied to the plug lock in the bottom direction by the axial deflection of the locking element of the connector plug, particularly at the transition point, thereby creating a transition from the disengaged position to the engaged position.

[0027] The transition point in the transition movement of the plug lock from the disengaged position to the engaged position is preferably defined by the fact that the axially inward end of at least one protrusion contacts the bottom side section of the test piece or the axially outward end of at least one terminal element. For example, the contact surface may be formed by one, two, or more contact ramps of the test piece. Preferably, the connector is designed such that during insertion into the connector, the connector plug, using the locking element of the connector plug—preferably using at least a partial circumferential clamp—contacts the contact surface of the test piece or at least one contact ramp. The contact surface is advantageously designed such that during insertion of the connector plug into the connector, the test piece is initially axially deflected inward, and at the transition point, at the end of the axial deflection, a force is applied to the plug lock towards the bottom of the connector body.

[0028] The connector is advantageously designed such that at least one impact surface—preferably two impact surfaces—of the plug lock abuts against at least one stop surface or corresponding stop surface of the connector body in the disengaged position, such that preferably at least one impact surface and at least one stop surface define or help define the disengaged position of the plug lock. At least one impact surface is preferably formed from the bottom side surface of at least one terminal element. At least one stop surface is advantageously formed from the cover side surface of at least one protrusion.

[0029] The retainer preferably comprises two arms. Advantageously, the retainer has a retaining section. The retaining section is preferably formed by a cover-side section of the retainer. In a side view, the retainer is advantageously arranged at least partially axially outward relative to the inspection piece.

[0030] At least one of the plug lock, retainer, or both arms preferably includes a latching element for latching into the coupling body, wherein at least one latching element preferably interacts with a complementary latching portion of the coupling body such that the plug lock is maintained or latched in the coupling body in the disengaged position. At least one latching element and at least one latching portion preferably prevent radial movement of the plug lock in the direction of the cover of the coupling body.

[0031] The connector is advantageously designed such that the disengaged and / or engaged positions of the plug lock can be inspected visually and / or by means of machine-readable symbols and / or by means of an electronic transmitter. The plug lock advantageously includes a cutout for visually inspecting the engaged position of the plug lock. Preferably, the connector body includes a wall opening for visually inspecting the engaged position of the plug lock. The wall opening of the connector body and the cutout of the plug lock are particularly preferably corresponding, wherein the wall opening and the cutout correspond more closely in the engaged position than in the disengaged position. Preferably, with the connector plug fully inserted into the connector, the flange or flange of the connector plug abuts or abuts against a first body end of the connector body. In particular, the machine-readable symbol can be a barcode or QR code. An example of an electronic transmitter is an RFID transmitter that determines changes in the position of the inspection piece or plug lock. Changes in position can include a shift from the disengaged position to the engaged position and / or a shift from the engaged position to the disengaged position.

[0032] The objective mentioned at the beginning is preferably achieved by a partially automated fluid coupling device, which includes a coupling connector and a coupling plug, the coupling connector being particularly the coupling connector according to the invention, wherein the coupling plug has a locking element for locking the coupling connector.

[0033] The objective mentioned at the outset is advantageously achieved by using coupling connectors or fluid coupling devices in land vehicles, particularly road vehicles. In the case of road vehicles, this preferably relates to passenger cars or trucks. Particularly preferred is the use of coupling connectors in passenger cars, and especially in electric vehicles. The coupling connector is further preferably a component of the cooling circuit for the battery of an electric vehicle. Attached Figure Description

[0034] The present invention will now be described with the aid of several schematic diagrams based on exemplary embodiments. As shown:

[0035] Figure 1 This is a perspective view of a fluid connection device according to the present invention, which includes a connection plug and a connection connector according to the present invention.

[0036] Figure 2A yes Figure 1 First perspective view of the plug lock of the connector in the image.

[0037] Figure 2B yes Figure 2A The second perspective view of the connector plug lock in the image.

[0038] Figure 3A Is it through Figure 1The first longitudinal section of the fluid connection device in the middle,

[0039] Figure 3B Is it through Figure 1 The second longitudinal section of the fluid coupling device shows the plug locked in the engaged position.

[0040] Figure 3C yes Figure 3B The longitudinal section, wherein the plug is locked in the disengaged position.

[0041] Figure 4A Is it through Figure 1 The first cross-section of the fluid coupling device, wherein the plug is locked in the engaged position.

[0042] Figure 4B Is it through Figure 1 The second cross-section of the fluid coupling device, wherein the plug is locked in the engaged position.

[0043] Figure 4C yes Figure 4B The cross-section, wherein the plug locks according to Figure 3C The disengagement position. Detailed Implementation

[0044] Figure 1 Fluid connection devices 1 and 3 are shown, comprising a connector 1 and a plug 3. The plug 3 may have a terminal section 28 designed to hook onto a pipe or other component. For example, the other component may involve a pump, nozzle, tank, etc. In the case of other components, the terminal section 28 of the plug 3 is preferably integrally connected to or substantially connected to the other component. In the case of hooking onto a pipe, for example according to… Figure 1 The terminal section 28 may have ribs for insertion into a pipe, the ribs being arranged around the perimeter of the terminal section 28. In other exemplary embodiments not shown here, the terminal section 28 may be designed as a pipe receiving portion, such that a pipe can be inserted into the terminal section 28 and, for example, the pipe can be connected to the connector 3 by welding—particularly laser welding. The connector 3 may include a flange 29 that abuts against the connector 1 when the connector 3 is fully inserted into the connector 1.

[0045] Figure 3AA longitudinal section of the connector plug 3 is shown. In this exemplary embodiment, the connector plug 3 is shown in a completely rotationally symmetrical manner, except for the flange 29. The connector plug 3 includes a locking element 21, which can be designed as a circumferential clamp. However, in an exemplary embodiment not depicted herein, the locking element can also be designed as a circumferential groove. The flange 29 and the locking element 21 can together define a middle section of the connector plug 3. The connector plug 3 advantageously includes a connecting section 30, which can be inserted into the connector body 2. The locking process between the connector plug 3 and the connector 1 will be discussed in more detail below. The terminal section 28 and the connecting section 30 of the connector plug 3 are advantageously fluidly connected to each other via a flow channel 36 of the connector plug 3.

[0046] according to Figure 1 The connector 1 includes a connector body 2, which, in this exemplary embodiment, is designed as a single piece and preferably integrally designed via injection molding. The connector body 2 extends from a first body end 4 toward a second body end 5, wherein the first body end 4 is disposed to a connector plug 3. The connector body 2 preferably includes a plug segment 14 that receives the connector plug 3. The connector body 2 advantageously has a connection segment 31, which can be connected to, for example, another pipe (not shown) or another assembly (not shown). In the case of the connector 1, the assembly that can be connected to or connected to the connector 1 may be a pump, nozzle, canister, etc. The connection segment 31 can be reversibly connected to the assembly, for example via press fit, or irreversibly connected to the assembly, for example via welding or injection molding.

[0047] Preferably, the connecting section 31 is equipped for connection to an additional conduit (not shown). The connecting section 31, similar to the connector 3, can be designed to be inserted into or plugged into the additional conduit. Figure 1 In the exemplary embodiment illustrated in the figure, the connecting section 31 of the connecting connector 1 is provided with a circumferential outer rib, which ensures that an additional pipe (not shown here) is securely fitted onto the connecting section 31.

[0048] In this exemplary embodiment, the connector 1 may have a transition section 32 between the connecting section 31 and the plug section 14. For example... Figure 1 As illustrated, the connector 1 can be designed to be angled, such that the connecting section 31 and the plug section 14 form a 90° angle with respect to each other. The transition section 32 can be an angled section of the connector 1. In another embodiment not shown here, the connector 1 is not angled, such that there is no angle between the plug section 14 and the connecting section 31, and the transition section can be omitted.

[0049] As in Figure 3A Clearly, the fluid channel 6 extends from the first body end 4 to the second body end 5. Due to the cylindrical surface of the connecting section 30 of the connecting plug 3, the plug section 14 of the connecting connector 1 has a corresponding hollow cylindrical inner wall. The hollow cylindrical inner wall of the plug section 14 defines the intermediate axis M, and thus defines the axial, radial, and circumferential directions of the plug section 14 of the connecting connector 1. Since the connecting connector 1 is angled, the intermediate axis M is not the same as the longitudinal axis of the connecting section 31. The following directional indications related to the corresponding axis are advantageously always associated with the corresponding portion of the connecting connector 1.

[0050] In addition to connecting body 2, according to Figure 1 The connector also includes a plug lock 7. The plug lock 7 and the connector 1 are preferably designed such that... Figure 1 The plug lock 7 can be inserted into the connector 1 from above, and therefore is inserted into the connector 1 radially or in the insertion direction in the side view. (As shown in...) Figure 1 It is evident that the plug lock 7 can advantageously be in the engaged position inside the coupling connector 1. The plug lock 7 is particularly preferably in the disengaged position within the coupling connector 1, see [reference needed]. Figure 3C and Figure 4C Preferably, the plug lock 7 can be manually pressed from a position completely outside the coupling body 2 to a disengaged position. In the disengaged position, the plug lock 7 is advantageously latched in or in a defined position within the coupling connector 1. According to the invention, the coupling connector 1 and the plug lock 7 are designed such that when the coupling plug 3 has been fully inserted into the coupling connector 1, the plug lock 7 automatically disengages from the coupling body 2. Figure 3C and Figure 4C The disengagement position is transferred according to Figure 1 , Figure 3A , Figure 3B , Figure 4A and Figure 4B The joint position.

[0051] According to the present invention, Figure 1The plug lock 7 includes a back 12, by which the plug lock 7 is brought into the disengaged position from the outside of the connector 1, preferably by manually pressing the back 12. In the engaged state, the back 12 is advantageously configured to fit against the cover 40 of the connector body 2. The back 12 of the plug lock 7 is advantageously designed such that it is at least partially aligned with the surface of the connector body 2. This allows a first visual inspection to verify a complete connection between the connector 1 and the plug 3. A second visual inspection is allowed by the flange 29, which, in this exemplary embodiment, indicates that the plug 3 has been fully inserted when the flange 29 abuts against the connector 1. The connector body 2 preferably includes at least one wall opening 26, and preferably two wall openings 26. The wall openings 26 allow a third visual inspection to verify the complete insertion of the plug 3 or the plug lock 7.

[0052] As from Figure 2A Obviously, the plug lock 7 has a retainer 8 and a test member 9, wherein the plug lock 7 is preferably manufactured as a single piece, and particularly preferably integrally manufactured by injection molding. The retainer 8 advantageously has a retaining section 10, which, in this exemplary embodiment, engages behind the locking element 21 of the connector plug 3 in the fully inserted state into the connector 1, and thus secures the connector plug 3 in the connector 1. The retainer 8 in this exemplary embodiment includes two arms 33a, 33b, wherein a corresponding latching element 22a or 22b for the connector body 2 is configured in each of the two arms 33a, 33b. In this exemplary embodiment, the latching elements 22a, 22b are associated with the corresponding latching portions 23a or 23b of the connector body 2 (see...). Figure 4C The latch, and thus the plug lock 7, is secured in the disengaged position in the coupling connector 1.

[0053] according to Figure 2A The inspection piece 9 includes two legs 11a and 11b, wherein legs 11a and 11b extend downward from the back 12 or extend radially or in the insertion direction. Compared to the arms 33a and 33b, legs 11a and 11b are advantageously arranged to be more axially inward in the section near the back; see also Figure 3A The legs 11a and 11b advantageously form a gap in the axial direction between themselves and their respective accompanying arms 33a or 33b, which can receive the locking element 21 of the connector plug 3 when fully inserted into the connector 1. In the engaged state of the plug lock 7, the ends of the legs 11a and 11b facing away from the back 12 are arranged at the bottom 13 of the connector 1 (see...). Figure 1The bottom ends of the legs 11a and 11b preferably have impact surfaces 16a or 16b. Each of the two legs 11a and 11b advantageously includes a contact ramp 20a or 20b for contacting the locking element 21 of the coupling plug 3.

[0054] The two legs 11a and 11b are particularly preferably connected to each other via a connecting web 15. In this exemplary embodiment, the connecting web 15 is advantageously arranged between two contact ramps 20a or 20b. Due to the connecting web 15 of the inspection member 9, the two legs 11a and 11b are rigidly designed relative to each other and are particularly non-deployable. In contrast, the retainer 8 is preferably designed to be deployable, particularly to ensure the latching function by means of the latching elements 22a, 22b. For this purpose, the plug lock 7 or the retainer 8 advantageously has a gap 34.

[0055] As in Figure 2B Clearly, the legs 11a and 11b preferably define a receiving portion 19a or 19b by connecting the web plate 15 and the impact surfaces 16a and 16b. The plug lock 7 preferably includes a cutout 27. The cutout 27 in this exemplary embodiment corresponds to Figure 1 The wall opening 26 is located in the test piece 9. Advantageously, the test piece 9 includes a plug opening 38 for receiving the connecting plug 3, and in the front view, the connecting plug 3 is preferably longer in the insertion direction than in the direction orthogonal to the insertion direction. Preferably, a gap 34 connects the plug opening 38 to the diameter 27 to ensure smooth obstruction of the arms 33a, 33b. Each of the legs 11a, 11b preferably includes terminal elements 37a, 37b at its bottom end. The bottom end of the terminal elements 37a, 37b advantageously each has an actuating element 39a, 39b. For manual operation, the actuating elements 39a, 39b preferably each include a rough or grooved structure.

[0056] Figure 3A A longitudinal section passing through the intermediate axis M is shown. Figure 1 In the fluid connection devices 1 and 3, the plug lock 7 is in the engaged state, and the connecting plug 3 is fully inserted into the connecting connector 1. This can be seen in particular from the fact that the upper portion of the locking element 21 of the connecting plug 3 is arranged between the retainer 8 and the inspection element 9. Because the position is defined in this way, the connecting portion 30 of the connecting plug 3 advantageously corresponds to the seal 35 of the connecting connector 1. In this initial example, the seal 35 includes a sealing ring.

[0057] Preferably, the connecting body 2 includes a web 25. The web 25 is advantageously arranged at the bottom 13 of the plug section 14 of the connecting body 2. (As in...) Figure 3AClearly, in the engaged state of the plug lock 7, the connecting web 15 of the inspection piece 9 advantageously abuts against the web 25. In the engaged position of the plug lock 7, the retaining piece 8 and / or the inspection piece 9 preferably abut the rear portion of the connecting plug 3. The longitudinal extension of the web 25 preferably extends primarily in the axial direction. The web 25 advantageously defines bottom openings 24a, 24b or subdivides bottom openings 24a, 24b.

[0058] exist Figure 3B In the middle, the longitudinal section is chosen such that it is parallel to Figure 3A Those longitudinal sections extend through the legs 11b. With the plug lock 7 in the engaged position, the wall opening 26 of the connecting body 2 advantageously corresponds to the cutout 27 of the plug lock 7. This allows for a (third) visual inspection of the engaged state of the plug lock 7 or the complete insertion of the connecting plug 3. The connecting connector 1 particularly preferably includes at least one protrusion, and more preferably includes two protrusions 18a, 18b. Figure 3B The longitudinal section extends through the protrusion 18b and through the connecting web 15 and the impact surface 16b. It is highly preferred that at least one of the two legs 11a, 11b has a receiving portion 19a or 19b, and preferably both legs 11a, 11b have receiving portions 19a or 19b. The protrusion 18b of the connecting body 2 preferably engages with the receiving portion 19b in the engaged state and advantageously defines the engaged state of the plug lock 7.

[0059] The bottom 13 of the connecting body 2 preferably includes at least one bottom opening, and preferably includes two bottom openings 24a, 24b. The bottom opening 24b is advantageously configured to the protrusion 18b or the leg 11b. At least one bottom opening 24a, 24b, or both bottom openings 24a and 24b, allows the plug lock 7 to be transferred from a disengaged state to an engaged state. Although in the disengaged state, the impact surface 16b of the plug lock 7 advantageously abuts the surface of the protrusion 18b facing the back 12, after the plug lock 7 has been transferred to the engaged position, the protrusion 18b of the connecting body is located in the receiving portion 19b of the leg 11b. The connecting connector preferably includes an electronic transmitter (not shown here), and in particular, the connecting connector includes an RFID transmitter. Preferably, the electronic transmitter acquires the transfer from the engaged position to the disengaged position, and advantageously also acquires the transfer from the disengaged position to the engaged position, and the transfer acquired in this way can be detected using a reader.

[0060] exist Figure 3CIn this state, the plug lock 7 is still disengaged, while the connector plug 3 has been partially inserted. Specifically, it can be seen that the locking element 21 of the connector plug 3 has not yet reached the intermediate space between the retaining member 8 and the inspection member 9. Similarly, the connecting section 30 of the connector plug 3 has not yet reached the sealing member 35. Therefore, in... Figure 3C In the state shown for fluid connection devices 1 and 3, neither mechanical protection nor fluid seal is present. Preferably, the plug lock 7 abuts or abuts against at least one protrusion 18a, 18b or at least one stop surface 17a, 17b using at least one terminal element 37a, 37b or at least one impact surface 16a, 16b. Therefore, the plug lock 7 will not be mistakenly moved to the engaged position by manual pressing on the back 12 while still in the disengaged position.

[0061] In order to remove plug lock 7 from according to Figure 3C The disengagement position is transferred according to Figure 3B At the engagement position, the connector plug 3 must preferably be fully inserted into the connector 1. During the insertion of the connector plug 3, the locking element 21 preferably contacts at least one contact ramp 20a, 20b, thereby elastically deflecting the legs 11a, 11b axially inward. This deflection generates elastic mechanical stress in the plug lock 7 or in the test piece 9 until the terminal elements 37a, 37b reach the bottom openings 24a, 24b. Once the legs 11a, 11b have achieved sufficient axial deflection, the axially outward end of the terminal element 37b and the axially inward end of the protrusion 18b no longer contact each other. This moment or point may be referred to as the transition moment or transition point. At the transition moment when the connector plug 3 is preferably fully inserted, the spring elastic energy stored in the test piece 9 or in the legs 11a, 11b is released, causing the plug lock 7 to be automatically and suddenly pulled from the disengaged engagement position to the engaged position, and reaching the engagement position. Figure 3B The state is shown in the diagram. After the sudden latching movement has ended, the plug lock 7 is in the position according to... Figure 3B The engagement positions are such that the protrusions 18a and 18b are located in the corresponding receiving portions 19a and 19b of the inspection piece 9.

[0062] Preferably, according to Figure 3B The engaged position of the plug lock 7 can be manually shifted to the disengaged position. For this purpose, the user advantageously presses the two terminal elements 37a, 37b or the actuating elements 39a, 39b in an axially inward direction, thereby establishing a mechanical elastic stress. The actuating elements 39a, 39b preferably have a rough / grooved structure. Once the terminal elements 37a, 37b have reached the bottom openings 24a, 24b, the mechanical stress is released by a restoring force, causing the plug lock 7 to jump to the disengaged position according to… Figure 3C , Figure 4CThe disengaged position. Therefore, the connector 3 is preferably moved from the fully inserted position (illustrated as the disengaged position without the connector lock 7) to a near-fully inserted position (also not illustrated), and only needs to be pulled out from the connector 1.

[0063] Figure 4A The illustration shows that in Figure 3B The cross-section is represented by a dashed line. Conversely, Figure 3A and Figure 3B The longitudinal section in Figure 4A The text is marked with a dotted line.

[0064] In particular, Figure 4A The cross-section extends through the two arms 33a, 33b of the retainer 8, and thus also through the middle section 36 of the connector 3, and through the plug section 14 of the connector body 2. Figure 4A At the cross-sectional location, the protrusions 18a and 18b have a considerable radial expansion in the insertion direction of the plug lock 7. Conversely, the radial expansion of the terminal elements 37a and 37b is relatively small, see [reference needed]. Figure 3B For example, in Figure 4A Clearly, the contact ramps 20a and 20b are preferably inclined to achieve better force transmission from the locking element 21 to the corresponding contact ramps 20a and 20b. This is because during the insertion of the connector 3, Figure 4A The bottom area of ​​the locking element 21 shown in the figure abuts against the two contact ramps 20a, 20b, which causes the test piece 9 or the legs 11a, 11b to begin to deflect.

[0065] Figure 4B The diagram illustrates how... Figure 3B The cross-section is represented by the corresponding dotted line. The connecting web 15 of the inspection piece, together with the terminal elements 37a and 37b, preferably forms a shape-fitting arrangement around the protrusions 18a and 18b of the connecting body 2. The receiving portions 19a and 19b of the inspection piece 9 preferably rest on the protrusions 18a and 18b, which ensures a favorable and secure fit of the plug lock 7 in the connecting body 2.

[0066] Figure 4CThe plug lock 7 is shown in cross-section in the disengaged position. In the disengaged position, the arms 33a, 33b of the plug lock 7 or the arms 33a, 33b of the retainer 8 are preferably latched by latching elements 22a, 22b to latching portions 23a, 23b of the connecting body 2, which are preferably in the form of shoulders, so that the plug lock 7 is securely held in the connecting body 2. Preferably, the impact surfaces 16a, 16b of the terminal elements 37a, 37b or the terminal elements 37a, 37b simultaneously abut against the stop surfaces 17a, 17b of the protrusions 18a, 18b of the connecting body 2. This latching on one hand and abutting on the other advantageously ensures that the plug lock 7 cannot move in the insertion direction in the disengaged position until the locking element 21 of the connecting plug 3 has reached the inspection piece 9. This conveys the impression of a high-quality connecting connector 1.

[0067] As a whole, the arrangement of the bottom portion of the connecting body 2 and the bottom end of the inspection piece 9 provides a very stable and durable latching device that automatically pulls in the plug lock 7 to fully insert the connecting plug 3 into the connecting body 2. Therefore, this mechanism is more robust than existing mechanisms known for detecting the full insertion of the connecting plug and for automatically pulling in the plug lock 7.

[0068] Furthermore, the plug lock 7 preferably returns from the engaged position to the disengaged position via axially inward pressure, which is manually applied to the preferred, rough / grooved actuating elements 39a, 39b. This also makes the release fluid connection devices 1, 3 very user-friendly. This results in a completely new connection connector 1 or fluid connection device 1, 3 with excellent robustness and user-friendliness.

[0069] List of reference numerals

[0070] 1. Connecting connector

[0071] 2. Connecting Body

[0072] 3 Connecting plug

[0073] 4 2 First body end

[0074] 5 2 Second body end

[0075] 6 2 fluid channels

[0076] 7. Plug lock

[0077] 8. Retaining components

[0078] 9 Inspection pieces

[0079] 10 8 maintenance section

[0080] Legs of 11a, 11b 9

[0081] 12 7, 9 back

[0082] 13 2 bottom

[0083] 14 2 plug section

[0084] 15 9 connecting web

[0085] Impact surfaces of 16a, 16b, 7, and 9

[0086] Stop surfaces 17a and 17b 2

[0087] 18a, 18b 2 protrusions

[0088] 19a, 19b, 7, 9 are receiving parts for 18.

[0089] Contact slopes of 20a and 20b 9

[0090] 21 3 locking element

[0091] 22a, 22b 7 latching elements

[0092] 23a, 23b 2 latching portions for 22

[0093] 24a, 24b 2 are bottom openings for 11a, 11b.

[0094] Web plate 25 24

[0095] 26 2 for the wall opening of 27

[0096] 27 7 incision

[0097] 28 3 terminal section

[0098] 29 3 flange

[0099] 30 3 connecting section

[0100] M 14's central axis

[0101] 31 2 connecting section

[0102] 32 2 transition section

[0103] Arms of 33a and 33b

[0104] 34 7 gap

[0105] 35 Seals

[0106] 36 3 flow channels

[0107] 37a, 37b terminal components

[0108] 38 9 plug opening

[0109] 39a, 39b Actuating elements

[0110] 40 caps

Claims

1. A coupling connector (1) for use in a partially automated fluid coupling device, wherein, The connector (1) has a connector body (2), wherein the connector (1) is designed to form a detachable latching connection with a connector plug (3), the connector plug (3) being insertable into the connector (1), wherein the connector (1) includes a plug lock (7), wherein the plug lock (7) has a retainer (8) and a check member (9), wherein the retaining portion (10) of the retainer (8) is designed to lock the connector plug (3) in the connector body (2). The plug lock (7) is disposed in the plug section (14) of the connecting body (2), wherein the plug section (14) has a central axis (M), wherein the plug lock (7) can be inserted into the connecting body (2) in the radial direction, wherein the connecting connector (1) is configured such that the plug lock (7) can be in a radially disengaged position and a radially engaged position relative to the connecting body (2), wherein the connecting connector (1) is configured such that in the engaged position of the plug lock (7), the connecting plug (3) is fixed in the connecting body (2) in the axial direction by the retainer (8). The inspection piece (9) has a back (12) and two legs (11a, 11b), wherein the bottom (13) of the connecting body (2) is disposed at the end of the legs (11a, 11b) facing away from the back (12), wherein the inspection piece (9) is designed to respond to direct or indirect contact with the connecting plug (3) during insertion, such that the plug lock (7) is automatically transferred from the disengaged position to the engaged position by the deflection of the inspection piece (9), wherein the connecting connector (1) is configured such that the inspection piece (9) or the legs (11a, 11b) is axially deflected in the axial direction by the insertion movement of the connecting plug (3). Its features are, The connecting connector (1) is configured such that the bottom ends of the legs (11a, 11b) maintain a distance from each other when deflected by the connecting plug (3).

2. The connector (1) according to claim 1, wherein, The test piece includes a connecting web (15), wherein the connecting web (15) is arranged to be opposite the back (12) relative to the intermediate axis (M) during the disengaged position and / or the engaged position, and to connect the legs (11a, 11b) to each other.

3. The connecting connector (1) according to claim 1 or 2, wherein, The connector (1) is designed such that the plug lock (7) can be moved from the engaged position to the disengaged position by actuating the bottom side section of the test piece (9) in an axially inward direction.

4. The connecting connector (1) according to claim 1 or 2, wherein, The bottom end of the plug lock (7) or the bottom end of the inspection piece (9) includes at least one actuating element (39a, 39b) for transferring the plug lock (7) from the engaged position to the disengaged position.

5. The connecting connector (1) according to claim 1 or 2, wherein, The legs (11a, 11b) of the test piece (9) are angled or bent outward in an axial manner and follow the insertion direction of the plug lock (7).

6. The connecting connector (1) according to claim 1 or 2, wherein, The connecting body (2) has at least one protrusion (18a, 18b) that extends axially inward, wherein, at the engagement position of the plug lock (7), the at least one protrusion (18a, 18b) at least partially protrudes axially through one of the legs (11a, 11b) or through the inspection piece (9).

7. The connecting connector (1) according to claim 1 or 2, wherein, The plug lock (7) or the inspection piece (9) includes at least one receiving part (19a, 19b), wherein the at least one receiving part (19a, 19b) is configured to latch with an element of the connecting body (2).

8. The connecting connector (1) according to claim 1 or 2, wherein, The bottom (13) of the connecting body (2) has at least one bottom opening (24a, 24b), wherein the connecting connector (1) is configured such that, during the transition from the disengaged position to the engaged position, the legs (11a, 11b) slide at least partially through the at least one bottom opening (24a, 24b).

9. The connecting connector (1) according to claim 1 or 2, wherein, In the disengaged position, the section of the inspection piece (9) or the leg (11a, 11b) is located in the radial direction between the bottom (13) and the retainer (8) or the retaining section (10).

10. The connecting connector (1) according to claim 1 or 2, wherein, The inspection piece (9) has a contact surface for directly or indirectly contacting the connector (3), wherein the connector (1), the plug lock (7), or the inspection piece (9) is configured such that the contact surface is arranged such that when the plug lock (7) is in the engaged position, the intermediate axis (M) of the plug segment is opposite to the back (12) of the inspection piece (9).

11. The connecting connector (1) according to claim 1 or 2, wherein, The connector (1) is configured such that at least one impact surface (16a, 16b) of the plug lock (7) abuts against at least one stop surface (17a, 17b) of the connector body (2) in the disengaged position, such that the at least one impact surface (16a, 16b) and the at least one stop surface (17a, 17b) define the disengaged position of the plug lock (7).

12. The connecting connector (1) according to claim 1 or 2, wherein, The plug lock (7) or the retainer (8) has at least one latching element (22a, 22b) for latching into the coupling body (2), wherein the at least one latching element (22a, 22b) interacts with a complementary latching portion (23a, 23b) of the coupling body (2) such that the plug lock (7) is maintained or latched in the coupling body (2) in the disengaged position.

13. The connecting connector (1) according to claim 1 or 2, wherein, The connector (1) is configured such that the disengaged position and / or engaged position of the plug lock (7) can be inspected by visual inspection and / or by means of machine-readable symbols and / or by means of an electronic transmitter.

14. A partially automated fluid coupling device, the fluid coupling device comprising a coupling connector (1) and a coupling plug (3) according to any one of claims 1 to 13, wherein, The connector plug (3) has a locking element (21) for locking in the connector (1).

15. Use of the coupling connector (1) according to any one of claims 1 to 13 or the fluid coupling device according to claim 14 in a land vehicle.

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