Connection system for transmitting fluids, corresponding method, connection element, plug-in part and cover element - Patents.com

Abstract

The present invention relates to a connecting member (101) for a fluid-transmitting connection to a plug-in component (111), the connecting member (101) comprising a body (103) and a locking system (105), the body (103) comprising a fluid channel and a receiver (113) for receiving the plug-in component (111), the locking system (105) being disposed on the body (103) and configured to lock the plug-in component (111) in the receiver (113) in a predetermined position relative to the fluid channel to provide a fluid-transmitting connection between the connecting member (101) and the plug-in component (111), the locking system (105) comprising a first locking member (107) and a second locking member (109).

Description

[Technical Field]

[0001] The present invention relates to a connecting member for a fluid-transmitting connection to a plug-in part, a plug-in part, a connection system comprising a connecting member and a plug-in part, a method for reversibly providing a fluid-transmitting connection, and a cover member, as set forth in the accompanying claims. [Background technology]

[0002] For example, for providing a connection for transmitting a fluid such as a coolant in a vehicle, a connection system is known, for example, from document DE 102004062887 B3, in which the coupling is fixed to the plug-in part by a single-piece fixing member, and releasing this type of connection generally requires a considerable effort, which is provided by a tool. Furthermore, in the case of connection systems with integral fixing members, each plug-in part must be introduced into the coupling precisely in a predetermined position in order to ensure that the plug-in part is securely fixed in the coupling. Summary of the Invention

[0003] Against this background, it is an object of the present invention to provide an option for easily and reliably realizing fluid transmission connections. Therefore, according to a first aspect of the present invention, a connecting member for a fluid-transmitting connection to a plug-in component is proposed, the connecting member comprising a body and a locking system, the body comprising a fluid channel and a receiver for receiving the plug-in component, the locking system being arranged on the body and configured to lock the plug-in component in place relative to the fluid channel in the receiver to provide a fluid-transmitting connection between the connecting member and the plug-in component, the locking system comprising a first locking member and a second locking member, the first locking member being movable between a lower position and an upper position, the second locking member being movable between the upper position and a lower position, the second locking member being mechanically reversibly coupled to the first locking member via a plurality of coupling members. The plug-in part is coupled or reversibly coupleable, and the plurality of coupling members are movable between a coupled position and a released position, and in the coupled position the plurality of coupling members transmit the movement of the first locking member to the second locking member, so that when the plug-in part moves along a predetermined trajectory through the main body, when a pressure member of the plug-in part moves the first locking member to its lower position, the first locking member moves the second locking member towards, in particular to, its lower position, and when the pressure member moves further along the predetermined trajectory through the main body to the second locking member, the plurality of coupling members release the movement of the first locking member to its upper position.

[0004] In the context of the present invention, a receptacle for a plug-in part is understood to mean a recess provided in the body of the proposed connecting element into which the plug-in part is introduced, in particular plugged in, so that the body at least partially surrounds the plug-in part, in particular in a fluid-tight manner.

[0005] In the context of the present invention, the upper position of the first fixing member is understood to mean a position of the first fixing member in which the first fixing member partially overlaps the receiving portion of the main body. Accordingly, the upper position of the first fixing member is understood to mean a position opposite to the lower position, i.e., the position in which the first fixing member does not overlap the receiving portion. In particular, the lower position of the first fixing member is a lower side in the direction of gravity, and the upper position of the first fixing member is an upper side in the direction of gravity. In particular, the first fixing member is pressed to its upper position by an optional spring member.

[0006] In the context of the present invention, a lower position of the second fixing member is understood to mean a position of the second fixing member in which the second fixing member partially overlaps the receiving part of the main body. In particular, the lower position of the second fixing member is below in the direction of gravity, and the upper position of the second fixing member is above in the direction of gravity.

[0007] The proposed connecting element is based on the principle that a plug-in part inserted into the connecting element is fixed therein by a fixing system comprising two fixing elements, where the two fixing elements are separate parts and can be moved relative to one another in at least one state of the connecting element, so that the two fixing elements can be moved at least temporarily independently of one another at different times during the connecting operation, e.g. the plug-in part can first be oriented in the connecting element by a first fixing element and then finally fixed therein by a second fixing element.

[0008] Furthermore, the first and second locking members are mechanically reversibly coupled or coupleable to each other, such that movement of the first locking member of the locking system leads to movement of the second locking member. Here, the locking system is arranged within the body in such a way that the second locking member can move toward its lower position only when the first locking member is moved toward its lower position through or within the body in a predetermined trajectory, i.e., by a plug-in part moving toward its lower position in the correct predetermined position or in the correct relative orientation with respect to the body. Thus, the locking system locks the plug-in part to the body only when the plug-in part is correctly attached or introduced into the body in the correct or predetermined position, thereby preventing incorrect attachment of the plug-in part to the body, which may lead to leakage.

[0009] The first securing member may be configured to include a plurality of spring members configured to urge the first securing member from its lower position to its upper position. For example, a spring member, such as a resilient arm, presses against the wall of the body, thereby automatically moving the first fixing member to the upper position.

[0010] Furthermore, the second fixing member can be movable between its upper position, lower position, and intermediate position as the plug-in component moves through the main body, and the second fixing member can be configured to be located at the intermediate position between its upper and lower positions and to release the plug-in component from movement through the main body.

[0011] The intermediate position of the second locking member ensures that neither the first nor the second locking member overlaps the receiving portion of the main body, thereby enabling a released state in which the plug-in component can be removed from the main body.

[0012] Further, the first fixing member has adjacent arms surrounding a receiving portion of the main body, with multiple coupling members disposed on each arm, the multiple coupling members being movable between a disengaged position and a coupled position, the coupling members facing each other in the coupled position and facing further away from each other in the disengaged position than in the coupled position; the second fixing member has multiple arms, each arm having a receiving portion for engaging with one of the multiple coupling members of the first fixing member, such that the multiple coupling members prevent movement of the second fixing member relative to the first fixing member when the multiple coupling members are in their coupled position and release movement of the second fixing member relative to the first fixing member when the multiple coupling members are in their disengaged position.

[0013] A coupling member of the first fixed member interacting with an arm of the second fixed member provides coupling or coordinated movement between the first fixed member and the second fixed member, such that when the coupling member moves to its coupled position, the first fixed member moves relative to the second fixed member, or vice versa.

[0014] As soon as the coupling member is moved to the release position, the first and second locking members can move independently of each other, so that, for example, the first locking member can be moved to its upper position while the second locking member remains in its lower position.

[0015] Furthermore, the coupling members may be arranged to overlap the receiver in the first position, so that the plug-in part presses the coupling members into the release position when the plug-in part engages with the receiver.

[0016] The overlapping of the receiving section by the coupling members, i.e. the arrangement of the coupling members such that they protrude into the cross section of the receiving section or the spacing between the coupling members is smaller than the cross section of the receiving section, results in the coupling members being automatically pressed into the release position by the plug-in part, the cross section of which substantially corresponds to the cross section of the receiving section, when the plug-in part is pressed into the receiving section.

[0017] The main body may further comprise a locking member receiving portion for partially receiving the first locking member, and the first locking member may be configured to partially engage within the locking member receiving portion in its lower position and partially overlap the receiving portion in its upper position to release the receiving portion of the main body.

[0018] For example, a locking member receiving portion, such as a recess provided in the main body, allows the first locking member to move into the locking member receiving portion so that the first locking member can be partially introduced into the locking member receiving portion, and in its lower position the first locking member releases the receiving portion of the main body for inserting or withdrawing a plug-in part.

[0019] Furthermore, the second fixing member may be movable between its upper position, intermediate position, and lower position, and the second fixing member may be configured to include a plurality of transmission members configured to transmit pressure applied to the second fixing member to the first fixing member, so as to move the first fixing member from its upper position, where the first fixing member partially overlaps the receiving portion of the main body, to its lower position, where the first fixing member releases the receiving portion of the main body, when the second fixing member moves from its upper position to its intermediate position.

[0020] The intermediate position in which the second fixing member is in a raised position compared to its lower position and in a lowered position compared to its upper position, and in which the multiple transmission members of the second fixing member engage with the first fixing member, allows coupled or simultaneous (i.e., synchronized) movement of the first fixing member and the second fixing member, so that pressure on the second fixing member moves both the first fixing member and the second fixing member downward, so that neither the first fixing member nor the second fixing member overlaps with the receiving portion of the main body, and the plug-in component disposed in the connecting member can be removed from the connecting member.

[0021] Furthermore, the second fixing member can be configured such that it partially overlaps the receiving portion of the main body in its lower position, and the locking member of the second fixing member engages with the locking member receiving portion of the first fixing member to fix the first fixing member in its lower position, and the second fixing member is disposed in an intermediate position which is a raised position compared to the lower position of the second fixing member, and in which the multiple transmission members of the second fixing member engage with the first fixing member and the locking member is released from the locking member receiving portion.

[0022] In particular, the locking member receiving portion may be formed by a spring member of the first fixing member, such that when the locking member of the second fixing member engages with the locking member receiving portion, the spring action of the locking member of the second fixing member is prevented from urging the first fixing member from its lower position to its upper position.

[0023] Furthermore, the second fixing member can be configured to include a plurality of first user interfaces for manually moving the second fixing member from its lower position to its upper position, and a plurality of user interfaces for manually moving the second fixing member from its upper position to its intermediate position.

[0024] The user interface can be, for example, a protrusion of material, a predetermined material area, or any other area suitable for user manipulation of the proposed connecting element. In particular, paired or opposing user interfaces can be provided, so that a user can grasp, and in particular pull, and move the second fixing element with pliers or tweezers.

[0025] Furthermore, the second fixing member may be configured with a plurality of holes, and when the second fixing member is in the lower position, a plurality of display areas configured on the main body may be configured to be visible through those holes, and when the second fixing member is in the upper position, the areas surrounding each hole of the second fixing member may be configured to overlap with the respective display areas.

[0026] Because the second fixing member is positioned in its lower position only when the plug-in component is fixed to the main body, when the second fixing member is positioned in its upper position, the second fixing member hides or overlaps the multiple display areas, making the multiple display areas visually invisible. Therefore, when the second fixing member is positioned in the lower position, the second fixing member releases the multiple display areas, i.e., makes the multiple display areas visually perceptible.

[0027] When the second fixing member is in its upper position, each display area is overlapped, i.e., hidden, by the material surrounding the hole in the second fixing member, so that the display area is hidden and, in particular, the machine-readable code provided in the display area cannot be detected by a machine.

[0028] Furthermore, a machine-readable code may be displayed in each of the plurality of display areas. A machine-readable code, such as a QR code, can encode or provide information about the connection system, for example. Here, the position of the machine-readable code in the respective display area ensures that the machine-readable code is read or detected only when the second fixing member is in its lower position and the plug-in component is correspondingly fixed to the main body. Thus, if the machine-readable code is detected by a machine, it can be considered that the second fixing member is in its lower position and the plug-in component is fixed to the main body, and as a result, a corresponding verification notification can be output, i.e., displayed on an output unit or stored in a memory, for example.

[0029] According to a second aspect, the proposed invention relates to a plug-in part for connection for transmitting a fluid to one possible embodiment of the proposed connecting member, the plug-in part comprising a body with a flow path for transmitting a fluid and a plurality of pressure members arranged on the body, the pressure members being spaced apart from one another such that when the plug-in part is fixed to the connecting member a first fixing member and a second fixing member engage between two pressure members of the plurality of pressure members, and configured to move the first fixing member of the connecting member to its lower position and thereby move the second fixing member to its lower position when the plug-in part moves on a predetermined trajectory through the body.

[0030] Pressure members engaging around the first and second locking members minimize, in particular in a mating manner, movement play of the plug-in part within the connecting member.

[0031] Furthermore, the pressure member moves the first locking member and thereby the second locking member to their respective lower positions when the plug-in part is inserted into the connecting member.

[0032] According to a third aspect, the invention relates to a connection system for transmitting fluids, comprising a number of possible embodiments of the proposed connection member and a number of possible embodiments of the proposed plug-in part.

[0033] According to a fourth aspect, the proposed invention relates to a method for reversible provision of a fluid-transmitting connection, which method comprises providing one possible embodiment of the proposed connection system and introducing a respective plug-in part into a receiving part of a respective connection member of the connection system, so that the plug-in part in the connection member first presses the first locking member into its lower position, which then reversibly mechanically couples with the second locking member, thereby pressing the second locking member into its lower position, and on its trajectory through the connection member, the plug-in part releases the reversible mechanical coupling, so that the first locking member moves to its upper position due to the spring force provided by the spring member of the first locking member, while the second locking member remains in its lower position, so that the first locking member overlaps with the receiving part in the area of ​​its upper position and the second locking member overlaps with the receiving part in the area of ​​its lower position in order to lock the plug-in part in the connection member.

[0034] Further, a method may be provided that includes moving the second fixing member to its upper position, and moving the second fixing member from its upper position toward the main body to its intermediate position, so that the first fixing member is pressed to its lower position via the multiple transmission members of the second fixing member without the second fixing member overlapping with the receiving portion of the main body.

[0035] According to a fifth aspect, the proposed invention relates to a cover member for selectively covering a display area on the body of one possible embodiment of the proposed connection member. The proposed cover member comprises a cover body, an interface for mechanically coupling to the second fixing member of the connecting member, and a number of holes configured in the cover body, and the cover member is configured to move even in the event of movement of the second fixing member, so that when the second fixing member is in its lower position, the display areas configured on the body are detectable by a machine, and when the second fixing member is in its upper position, the cover body overlaps the respective display areas of the body. [Brief explanation of the drawings]

[0036] Further features, details and advantages of the invention emerge from the claims and from the following description of exemplary embodiments with the aid of the drawings. [Figure 1] FIG. 1 is a cross-sectional view of one possible embodiment of the proposed connection system in the released state. [Figure 2] 2 is a detailed view of one possible embodiment of the fastening system of the connection system according to FIG. 1. FIG. [Figure 3] 2A-2C show the sequence of movements of the fastening system of the connection system according to FIG. 1 during insertion of the plug-in part; [Figure 4] FIG. 2 shows the connection system according to FIG. 1 with plug-in parts inserted. [Figure 5] FIG. 2 shows a possible embodiment of the proposed method by which the connection provided by the connection system according to FIG. 1 is released. [Figure 6] 10A-10C show further possible embodiments of the fastening system according to the invention with a cover member. [Figure 7] 7A and 7B show a further possible embodiment of the proposed connection system with a fastening system according to FIG. 6. DETAILED DESCRIPTION OF THE INVENTION

[0037] 1 shows a connection system 100. The connection system 100 comprises a connection member 101 having a body 103 and a fastening system 105, and a plug-in part 111, the fastening system 105 comprising a first fastening member 107 and a second fastening member 109.

[0038] In the basic state, i.e. when the plug-in part 111 is not inserted into the connecting member 101, the first fixing member 107 is located in its upper position due to the spring force provided by a spring member (not shown here) of the first fixing member 107 and is mechanically coupled to the second fixing member 109 via a coupling member (also not shown here), so that the first fixing member 107 likewise presses the second fixing member 109 to its upper position.

[0039] When the plug-in part 111 is inserted or pushed into the receptacle 113 formed in the main body 103, the first fixing member 107 is first pressed to its lower position by the rib or pressure member 115 of the plug-in part 111. Because the first fixing member 107 is still coupled to the second fixing member 109 via the coupling member, when the first fixing member 107 moves to the lower position, the force applied by the plug-in part 111 to move the first fixing member 107 is transmitted to the second fixing member 109, causing the second fixing member 109 to move towards the lower position. Thus, the plug-in part 111 can be pushed through the second fixing member 109 to a predetermined fixing position within the main body 103.

[0040] As a result of the automatic and coordinated movement of the first fixing member 107 and the second fixing member 109 while the plug-in part 111 is being inserted into the main body 103, no manual manipulation of the first fixing member 107 and the second fixing member 109 is required.

[0041] FIG. 2 shows a first fixing member 107, a second fixing member 109, and a fixing system 105 comprising the first fixing member 107 and the second fixing member 109. The first fixing member 107 comprises an optionally closed body 201 having arms 203 on which are respectively disposed coupling members 205. The coupling members 205 extend beyond the closed body 201 parallel to the central axis for engaging with the arms 207 of the second fixing member 109 to secure the second fixing member 109 to the first fixing member 107 and mechanically couple it to the first fixing member.

[0042] Thus, movement of the arms 203 or the connecting members 205 of the first fixing member 107 away from each other leads to free movement of the first fixing member 107, so that the first fixing member 107 can, for example, be lifted, i.e. moved to its upper position independently of the second fixing member 109. For this purpose, the first fixing member 107 comprises an optional spring member 215 which urges the first fixing member 107 away from the body 103 when the first fixing member 107 is in its lower position.

[0043] The fixing area 217 of the first fixing member 107 functions to overlap the receiving portion 113 of the connecting member 101 when the first fixing member 107 is in its upper position, so that the plug-in part 111 engaged in the receiving portion 113 is fixed to the connecting member 101.

[0044] Furthermore, the second fixing member 109 is provided with a transmission member 209, 213 that engages with the transmission receiving portion 211 of the first fixing member 107 when the second fixing member 109 is in its upper position or in its intermediate position, so that pressure applied to the second fixing member 109 leads to movement of the first fixing member 107.

[0045] In this case, the transmission member 209 comprises a hook 213 configured such that a protrusion of the hook 213 overlaps or engages with the transmission receiver 211. For this purpose, the transmission members 209, 213 are subjected to a pressure load in the direction of the transmission receiver 211 via an optional spring member.

[0046] 3 and 4 show the connecting operation when connecting the plug-in part 111 to the connecting member 101. In a first step 301, the plug-in part 111 is pushed into the body 103 of the connecting member 101, as indicated by arrow 311, so that the pressure member 115 presses against a guide 305 in the form of an oblique or sloping surface of the first fixing member 107, causing the first fixing member 107 to move towards its lower position, as indicated by arrow 307.

[0047] Because the first fixing member 107 is mechanically coupled to the second fixing member 109 in the received state, movement of the first fixing member 107 toward its lower position is transmitted to the second fixing member 109, which moves toward its lower position as shown by arrow 309.

[0048] In a second step 303, the plug-in part 111, for example a valve of the fluid system, is pushed further into the body 103, as indicated by the arrow 313. Now, the pressure member 115 moves along the guide 305, or the guide 305 moves along the pressure member 115, so that the first locking part 107 is pushed further downwards towards its lower position, as indicated by the arrow 315 shifted with respect to the arrow 307. As a result of the first locking part 107 moving to its lower position, the second locking part 109 also moves further towards its lower position, as indicated by the arrow 317 shifted with respect to the arrow 309, to an intermediate position, so that the plug-in part 111 is inserted into the second locking part 109.

[0049] In FIG. 4, the first fixing member 107 is in its upper position, and the second fixing member 109 is in its lower position. In its upper position, the first fixing element 107 overlaps the receiver 113, in particular by means of the fixing area 217, and thereby fixes the plug-in part 111 against sliding out of the connecting element 101. The fixing area 217 is therefore flat on the side facing the second fixing element 109, so that sliding of the plug-in part 111 on the fixing area 217 and movement of the plug-in part out of the receiver 113 are prevented.

[0050] In its lower position, the second fixing element 109 overlaps the receiving part 113 , in particular by means of its transmission element 209 , thereby fixing the plug-in part 111 so that it cannot slide out of the connecting element 101 .

[0051] FIG. 5 illustrates a method 500 for reversibly providing a fluid-transmitting connection. In the first or locked state 501, the first locking member 107 is in its upper position and the second locking member 109 is in its lower position. The first locking member 107 and the second locking member 109 therefore overlap the receptacle 113, respectively, so that a plug-in component (not shown here for clarity) introduced into the receptacle 113 is secured by the first locking member 107 and the second locking member 109 within the body of the corresponding connecting component.

[0052] When the first fixing member 107 is in its upper position and the second fixing member 109 is in its lower position, the locking member 503 of the second fixing member 109 engages with the locking member receiving portion 505 of the first fixing member 107, preventing undesired movement of the second fixing member 109 to the upper position.

[0053] To release the plug-in components, the second fixing member 109 is pulled upward at its first user interface 507 from its lower position to its upper position, as shown by arrows 509, 511, so that the locking member 503 of the second fixing member 109 is released from the locking member receiving portion 505 of the first fixing member 107.

[0054] In the second or transition state 513, the second locking member 109 is in its upper position, the locking member 503 of the second locking member 109 is disengaged from the locking member receiver 505 of the first locking member 107, and the transmission member 207 of the second locking member 109 engages the transmission receiver 209 of the first locking member 107. Thus, as shown by arrow 517, pressure on the second user interface 515 of the second locking member 109 moves the second locking member 109 towards its intermediate position, which in turn moves the first locking member 107 towards its lower position.

[0055] In the third or released state 521, the first fixing member 107 is in the lower position and the second fixing member 109 is in the intermediate position, so that the receiving portion 113 does not overlap with either the first fixing member 107 or the second fixing member 109 and the plug-in component can be removed from the main body 103.

[0056] FIG. 6 shows a fastening system 105 having a cover member 117 with two holes 119 that moves with the first fastening member 107 or the second fastening member 109 relative to the body 103 of the connection system 100 .

[0057] FIG. 7 shows the connection system 100 in a configuration in which a machine-readable code is displayed in a display area 121 on the main body 103. The display area 121 overlaps the cover body 123 of the cover member 117, so that the machine-readable code cannot be read when the second fixing member 109 is in its upper position together with the cover member 117 and the plug-in part 111 is not inserted into the body 103.

[0058] When the plug-in part 111 is introduced into the main body 103, the plug-in part 111 pushes the second fixing member 109 together with the cover member 117 to its lower position, so that the display area 121 overlaps the hole 119 and the machine-readable code can be detected or made detectable by a machine.

[0059] Thus, the indication area 121 and the hole 119 on the main body 103 are positioned relative to each other such that the machine-readable code can be detected by a machine only when the second fixing member 109 together with the cover member 117 is in its lower position and the plug-in part 111 is fixed to the main body 103. Thus, when detecting the machine code, for example by an optical scanner, the fixed connection between the plug-in part 111 and the main body 103 is automatically verified and a verification message is generated, for example.

[0060] The present invention is not limited to any of the above-described embodiments, but rather can be modified in many different ways. All features and advantages (including details of construction, spatial arrangement, method steps) that emerge from the claims, the description and the drawings can be essential to the invention, both by themselves and in the widest variety of combinations. [Explanation of symbols]

[0061] 100 Connected Systems 101 connecting member 103 Main Unit 105 Fastening System 107 First fixing member 109 Second fixing member 111 Plug-in parts 113 Receptor 115 Pressure member 117 Cover member 119 Recess (hole) 121 Display area 123 Cover body 201 Main Unit 203 Arm 205 Moving parts 207 Arm 209 Transmission components 211 Transmission and Reception Unit 215 Spring members 301 First Step 303 Second Step 305 Guide 307 Arrow 309 Arrow 311 Arrow 313 Arrow 315 Arrow 317 Arrow 500 ways 501 First state 503 Locking member 505 Locking member receiving portion 507 First User Interface 509 Intermediate position 511 Arrow 513 Second State 515 Second User Interface 517 Arrow 519 Arrow 521 Third State

Claims

1. A connecting member (101) for fluid-transmitting connection to a plug-in component (111), comprising: A main body (103); a fastening system (105), the body (103) comprises a fluid channel and a receptacle (113) for receiving a plug-in component (111); the fastening system (105) is arranged on the body (103) and is configured to fasten the plug-in part (111) in a predetermined position relative to the fluid channel in the receiver (113) to provide a fluid-transmitting connection between the connecting member (101) and the plug-in part (111); the fastening system (105) comprises a first fastening member (107) and a second fastening member (109); The first fixing member (107) is movable between a lower position and an upper position; The second fixing member (109) is movable between an upper position and a lower position; the second fixing member (109) is reversibly mechanically connectable to the first fixing member (107) via a plurality of connecting members (205); the plurality of coupling members (205) are movable between a coupling position and a disengaged position; In the coupled position, the plurality of coupling members (205) transmit the movement of the first locking member (107) to the second locking member (109), so that when the plug-in part (111) moves along a predetermined trajectory through the body (103), the first locking member (107) moves the second locking member (109) towards its lower position when the pressure member (115) of the plug-in part (111) moves the first locking member (107) into its lower position; A connecting member (101) in which the plurality of coupling members (205) release the movement of the first fixing member (107) to its upper position when the pressure member (115) moves further along a predetermined trajectory through the body (103) into the second fixing member (109).

2. 2. The connecting member (101) of claim 1, wherein the first fixing member (107) comprises a plurality of spring members (215) configured to urge the first fixing member (107) from its lower position to its upper position.

3. the second fixing member (109) is movable between its upper position, its lower position, and an intermediate position when the plug-in part (111) moves through the body (103); 3. The connecting member (101) according to claim 1 or claim 2, wherein the second fixing member (109) is located at an intermediate position between its upper and lower positions and releases the movement of the plug-in part (111) moving through the body (103).

4. the first fixing member (107) comprises adjacent arms (203) surrounding the receiving portion (113) of the body (103), each arm (203) having a plurality of coupling members (205) disposed thereon; the plurality of coupling members (205) are movable between a disengaged position and a coupled position, the coupling members (205) facing each other in the coupled position and oriented in directions further apart from each other in the disengaged position than in the coupled position; 4. The connecting member (101) according to claim 1, wherein the second fixed member (109) comprises a plurality of arms (207) each having a receiving portion for engaging with one of a plurality of coupling members (205) of the first fixed member (107), such that the plurality of coupling members (205) prevent movement of the second fixed member (109) relative to the first fixed member (107) when in their coupled position and release movement of the second fixed member (109) relative to the first fixed member (107) when the plurality of coupling members (205) are in their released position.

5. 5. The connecting member (101) according to claim 4, wherein the plurality of coupling members (205) overlap the receiving portion (113) in their coupling position, so that when the plug-in part (111) engages with the receiving portion (113), it presses the plurality of coupling members (205) into their release position.

6. the main body (103) has a fixing member receiving portion for partially receiving the first fixing member (107); A connecting member (101) according to any one of claims 1 to 5, wherein the first fixing member (107) partially engages with the fixing member receiving portion (113) at its lower position and partially overlaps with the receiving portion (113) at its upper position to release the receiving portion (113) of the main body (103).

7. the second fixed member (109) is movable between its upper position, its intermediate position, and its lower position; The second fixing member (109) 7. The connecting member (101) according to claim 1, further comprising a plurality of transmission members (207) configured to transmit pressure applied to the second fixing member (109) to the first fixing member (107) when the second fixing member (109) moves from its upper position to its intermediate position, in which the first fixing member (107) partially overlaps the receiving portion (113) of the main body (103), to a lower position in which the first fixing member (107) releases the receiving portion (113) of the main body (103).

8. the second fixing member (109) itself partially overlaps the receiving portion (113) of the body (103) in its lower position, and a locking member (503) of the second fixing member (109) engages in a locking member receiving portion (505) of the first fixing member (107) to fix the first fixing member (107) in its lower position; 8. The connecting member (101) according to claim 7, wherein the second fixing member (109) is arranged in an intermediate position, a position elevated compared to the lower position of the second fixing member (109), and a position in which the plurality of transmission members (209) of the second fixing member (109) engage with the first fixing member (107) and the locking member (503) is released from the locking member receiving portion (505).

9. 9. The connecting member (101) of claim 7 or claim 8, wherein the second fixing member (109) comprises a plurality of first user interfaces (507) for manually moving the second fixing member (109) from its lower position to its upper position, and a plurality of user interfaces (507) for manually moving the second fixing member (109) from its upper position to its intermediate position.

10. a plurality of holes (119) are formed in the second fixing member (109), and when the second fixing member (109) is in its lower position, a plurality of display areas (121) formed on the main body (103) are visible through the holes; A connecting member (101) according to any one of claims 1 to 9, wherein when the second fixing member (109) is in its upper position, the areas surrounding each hole (119) of the second fixing member (109) overlap with the respective display areas (121).

11. A plug-in part (111) for a fluid-transmitting connection to a connecting element (101) according to any one of claims 1 to 10, comprising: The plug-in component (111) comprises a body (103) having a channel for transmitting a fluid, and a plurality of pressure members (115) disposed on the body; the pressure members (115) are spaced apart from one another such that, when the plug-in part (111) is secured to the connecting member (101), the first securing member (107) and the second securing member (109) are engaged between two pressure members (115) of the plurality of pressure members (115); The plug-in part (111) is configured to move the first fixing member (107) of the connecting member (101) to its lower position when the plug-in part (111) moves on a predetermined trajectory through the main body (103), thereby moving the second fixing member (109) to its lower position.

12. A connection system (100) for transmitting a fluid, comprising a plurality of connection members (101) according to any one of claims 1 to 10 and a plurality of plug-in components (111) according to claim 10.

13. 1. A method (500) for reversibly providing a fluid-transmitting connection, comprising: The method (500) comprises: Providing a connection system (100) according to claim 12; introducing a respective plug-in part (111) into the receptacle (113) of each of the connecting members (101) of the connection system (100), so that the plug-in part (111) in the connecting member (101) first presses a first locking member (107) into its lower position, and presses the second locking member (109) into its lower position due to the reversible mechanical coupling of the first locking member (107) to the second locking member (109), and then, in its trajectory through the connecting member (101), the plug-in part (111) releases the reversible mechanical coupling, so that the first locking member (107) moves into its upper position due to the spring force provided by the spring member (215) of the first locking member (107), while the second locking member (109) remains in its lower position; A method (500) in which the first fixing member (107) partially overlaps the receiving portion (113) in its upper position and the second fixing member (109) partially overlaps the receiving portion (113) in its lower position to fix the plug-in part (111) in the connecting member (101).

14. moving the second fixing member (109) to its upper position; 14. The method (500) of claim 13, further comprising: moving the second fixing member (109) from its upper position toward the main body (103) to its intermediate position, such that the first fixing member (107) is pressed to its lower position via a plurality of transmission members of the second fixing member (109) without causing the second fixing member (109) to overlap the receiving portion (113) of the main body (103).

15. A cover member (117) for selectively covering a display area (119) on a main body (103) of a connecting member (101) according to any one of claims 1 to 10, comprising: A cover body (123), an interface for mechanically coupling said connecting member (101) to said second fixing member (109); A plurality of holes (119) formed in the cover body (123), A cover member (117) configured to move even when the second fixed member (109) moves, so that when the second fixed member (109) is in its lower position, the display areas configured on the main body (103) can be detected by a machine, and when the second fixed member (109) is in its upper position, the cover main body (123) overlaps each display area of ​​the main body (103).

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