Fluid-conducting connection system, corresponding method, connection element, insert part and cover element

Abstract

The invention relates to a connecting element (101) for a fluid-conducting connection to an insert part (111). The connecting element (101) comprises a body (103) and a fixing system (105), the body (103) comprises a fluid channel and a receptacle (113) for receiving an insert part (111), the fixing system (105) is arranged on the body (103) and is configured to fix the insert part (111) in a predeterminable position relative to the fluid channel in the receptacle (113), and the fixing system (105) is configured to fix the insert part (111) in the receptacle (113). The fixing system (105) is arranged between the connecting element (101) and the insert part (111) in order to provide a fluid-conducting connection between the connecting element (101) and the insert part (111), wherein the fixing system (105) comprises a first fixing element (107) and a second fixing element (109).

Description

[0001] The claimed invention relates to a connecting element for a fluid-conducting connection with an insert component, an insert component, a connecting system comprising the connecting element and the insert component, a method for reversibly providing a fluid-conducting connection and a covering element as described in the appended claims.

[0002] In order to provide a fluid-conducting connection, for example for a coolant in a vehicle, some connection systems are known, for example from German patent DE 10 2004 062 887 B3, in which a coupling is fixed to an insert part by an integral fixing element. Usually, considerable effort is required with the aid of tools to release a connection of this type.

[0003] Furthermore, in connection systems with an integrated fixing element, in order to ensure that the insert component is correctly fixed in the coupling, the respective insert component must be inserted into the coupling exactly in a predetermined position.

[0004] Against this background, the object of the proposed invention is to provide a solution for providing a fluid conducting connection simply and reliably.

[0005] According to a first aspect of the proposed invention, therefore, a connecting element for a fluid-conducting connection with an insert component is proposed. The proposed connecting element comprises a main body and a fixing system, wherein the main body comprises a fluid channel and a receptacle for accommodating an insert component, wherein the fixing system is arranged on the main body and is configured to fix the insert component in a predetermined position in the receptacle relative to the fluid channel to provide a fluid conducting connection between the connecting element and the insert component, wherein the fixing system comprises a first fixing element and a second fixing element, wherein the first fixing element is movable between a lower position and a higher position, wherein the second fixing element is movable between a higher position and a lower position, wherein the second fixing element is to be reversibly mechanically connected or capable of being reversibly mechanically connected to the first fixing element via a plurality of coupling elements, wherein the plurality of coupling elements are movable between a coupling position and a release position, wherein in the coupling position, the plurality of coupling elements transmit the movement of the first fixing element to the second fixing element, so that when the insert component moves through the main body along a predetermined trajectory, the pressure element of the insert component moves the first fixing element to its lower position, and the first fixing element causes the second fixing element to move toward its lower position, in particular to its lower position; and when the pressure element further passes through the main body along the predetermined trajectory into the second fixing element, the plurality of coupling elements release the movement of the first fixing element to its higher position.

[0006] In the context of the present invention, a receptacle for an insert is understood to be a recess in the proposed connecting element body, into which the insert can be inserted, in particular in a plug-in manner, so that the body at least partially and in particular in a fluid-tight manner surrounds the insert.

[0007] In the context of the present invention, the upper position of the first fixing element is to be understood as a position of the first fixing element in which the first fixing element partially overlaps the receptacle of the body. Correspondingly, the upper position of the first fixing element is to be understood as a position opposite to the lower position, i.e. a position in which the first fixing element does not overlap the receptacle. Specifically, the lower position of the first fixing element is at the bottom in the direction of gravity, and the upper position of the first fixing element is at the top in the direction of gravity. Specifically, the first fixing element is pressed into its upper position by an optional spring element.

[0008] In the context of the present invention, the lower position of the second fixing element is understood to be a position of the second fixing element, in which the second fixing element partially overlaps with the receptacle of the main body. Specifically, the lower position of the second fixing element is at the bottom in the direction of gravity, and the higher position of the second fixing element is at the top in the direction of gravity.

[0009] The proposed connecting element is based on the principle that an insertion component inserted into the connecting element is fixed in the connecting element by a fixing system comprising two fixing elements. Here, the two fixing elements are separate components and can be moved relative to each other in at least one state of the connecting element, so that they can be moved at least temporarily independently of each other at different times during the connecting operation, for example, the insertion component can first be oriented in the connecting element by a first fixing element and can subsequently be finally fixed in the connecting element by a second fixing element.

[0010] Furthermore, the first fixing element and the second fixing element are or can be reversibly mechanically coupled to each other, so that a movement of the first fixing element results in a movement of the second fixing element of the fixing system. Here, the fixing system is arranged in the body in such a way that the second fixing element can only be moved towards its lower position if the insert component is moved through or within the body along a predetermined trajectory, i.e. in a correct predetermined position or relative orientation relative to the body, thereby moving the first fixing element to its lower position. Accordingly, the fixing system fixes the insert component in the body only if the insert component is correctly positioned or has been inserted into the body in a correct or predetermined position, thereby preventing the insert component from being incorrectly positioned in the body and thus avoiding possible leakage.

[0011] It can be provided that the first fixing element comprises a plurality of spring elements which are configured to press the first fixing element from its lower position into its upper position.

[0012] A spring element, such as for example a resilient arm, automatically moves the first fixing element to the higher position by exerting pressure against the wall of the body.

[0013] It can also be arranged that when the insertion part moves through the body, the second fixing element can be moved between its upper position, lower position and middle position, wherein the second fixing element is in its middle position, located between its upper position and lower position, and releases the movement of the insertion part through the body.

[0014] The intermediate position of the second fixing element achieves a released state in which the receptacle of the main body is not overlapped by either the first fixing element or the second fixing element, so that the insert can be removed from the main body.

[0015] It can also be arranged that the first fixing element includes adjacent arms surrounding the main body receptacle, wherein each arm is arranged with a plurality of connecting elements, wherein the plurality of connecting elements can be moved between a release position and a connecting position, and the connecting elements are oriented relative to each other in their connecting positions, and are oriented to be farther away from each other in the release position than in the connecting position, wherein the second fixing element includes a plurality of arms, each arm including a receptacle for engaging with a connecting element of the plurality of connecting elements of the first fixing element, so that when the plurality of connecting elements are in their connecting positions, the plurality of connecting elements prevent the second fixing element from moving relative to the first fixing element, and when the plurality of connecting elements are in their releasing positions, the second fixing element is released from moving relative to the first fixing element.

[0016] The coupling element of the first fixing element interacting with the arm of the second fixing element enables a coupling or mutually coordinated movement of the first and second fixing elements, so that when the coupling element is moved into its coupling position, the first fixing element moves relative to the second fixing element, or vice versa.

[0017] Once the coupling element has been moved into its release position, the first and second fixing elements may be moved independently of each other, so that, for example, the first fixing element may be moved into its upper position while the second fixing element remains in its lower position.

[0018] It can also be provided that the plurality of coupling elements overlaps the receptacle in the first position, so that when the insertion part engages in the receptacle, the insertion part presses the plurality of coupling elements into the release position.

[0019] The overlap of the coupling element and the receptacle, i.e. the coupling element is arranged in such a way that it protrudes into the cross section of the receptacle, or the spacing between the coupling elements is smaller than the cross section of the receptacle, so that when an insertion component whose cross section basically corresponds to the cross section of the receptacle is pressed into the receptacle, the coupling element is automatically pressed into its release position.

[0020] It can also be arranged that the main body includes a fixing element receptacle for partially accommodating the first fixing element, wherein the first fixing element is partially embedded in the fixing element receptacle at its lower position to release the receptacle of the main body, and partially overlaps with the receptacle at its upper position.

[0021] A fixing element receptacle, such as for example a recess in the body, enables the first fixing element to be moved into the fixing element receptacle so that the first fixing element can be partially inserted into the fixing element receptacle and in its lower position the first fixing element releases the receptacle of the body for inserting or withdrawing the insertion part.

[0022] It can also be arranged that the second fixing element is movable between its higher position, middle position and lower position, and the second fixing element includes a plurality of transmission elements, which are configured to transmit the pressure applied to the second fixing element to the first fixing element when the second fixing element moves from its higher position to its middle position, so as to move the first fixing element from its higher position where it partially overlaps with the receptacle of the main body to its lower position where it releases the receptacle of the main body.

[0023] The intermediate position (in which the second fixing element is in a position raised relative to its lower position and lowered relative to its upper position, and multiple transmission elements of the second fixing element are engaged with the first fixing element) enables the first fixing element and the second fixing element to be coupled or synchronized (i.e., simultaneously) movement, so that pressure on the second fixing element causes both the first fixing element and the second fixing element to move downward, so that neither the first fixing element nor the second fixing element overlaps with the receptacle of the main body, and the insertion component arranged in the connecting element can be removed from the connecting element.

[0024] It can also be arranged that, in its lower position, the second fixing element itself partially overlaps with the receptacle of the main body, and the locking element of the second fixing element engages into the locking element receptacle of the first fixing element to fix the first fixing element in its lower position, wherein the second fixing element is in an intermediate position which is elevated relative to the lower position of the second fixing element, and in this position, a plurality of transmission elements of the second fixing element engage with the first fixing element, and the locking element is released from the locking element receptacle.

[0025] In particular, the locking element receptacles can be formed by spring elements of the first fixing element such that when the locking elements of the second fixing element engage in the locking element receptacles, they counteract the spring action which presses the first fixing element from its lower position into its upper position.

[0026] It may also be provided that the second fixing element comprises a plurality of first user interfaces for manually moving the second fixing element from its lower position to its upper position, and a plurality of user interfaces for manually moving the second fixing element from its upper position to its intermediate position.

[0027] The user interface can be, for example, a material protrusion, a predetermined material area or any other area of ​​the proposed connecting element suitable for user operation. Specifically, the user interface can be arranged in pairs or relatively, so that the user can grasp and move, in particular pull the second fixing element, in a pliers or tweezers-like grip.

[0028] It can also be arranged that a plurality of recesses are arranged in the second fixing element, and when the second fixing element is in its lower position, a plurality of display areas arranged on the main body can be seen through these recesses, wherein when the second fixing element is in its higher position, the area surrounding the corresponding recess of the second fixing element overlaps with the corresponding display area.

[0029] Since the second fixing element is in its lower position only when the insert component is fixed in the body, the second fixing element hides or overlaps the multiple display areas in its upper position, so that the multiple display areas cannot be visually seen. Accordingly, when the second fixing element is in its lower position, the second fixing element releases the multiple display areas, even if the multiple display areas are visually discernible.

[0030] When the second fixing element is in its upper position, the corresponding display area is overlapped, ie hidden, by the material of the second fixing element surrounding the recess, so that the display area is hidden, and in particular the machine-readable code arranged in the display area cannot be detected by the machine.

[0031] It can also be provided that the machine-readable code is displayed in corresponding display areas of the plurality of display areas.

[0032] A machine-readable code, such as, for example, a QR code, can encode or provide, for example, information about the connection system. Here, the position of the machine-readable code in the corresponding display area ensures that the machine-readable code can only be read out or detected when the second fixing element is in its lower position and the insert component is correspondingly fixed in the body. Accordingly, if the machine detects the machine-readable code, it can be assumed that the second fixing element is in its lower position and the insert component is fixed in the body, so that a corresponding verification message can be output, i.e., displayed, for example, on an output unit or stored in a memory.

[0033] According to a second aspect, the proposed invention relates to an insert component for fluid-conducting connection with a possible embodiment of the proposed connecting element, wherein the insert component comprises a body having a channel for conducting the fluid and a plurality of pressure elements arranged on the body, wherein the pressure elements are spaced apart from each other so that when the insert component is fixed in the connecting element, a first fixing element and a second fixing element engage between two pressure elements of the plurality of pressure elements, and wherein the insert component is configured to move the first fixing element of the connecting element into its lower position and thereby move the second fixing element into its lower position when moving through the body along a predetermined trajectory.

[0034] In particular, the pressure element, which engages in a positive-locking manner around the first fixing element and the second fixing element, minimizes the movement play of the insert component in the connecting element.

[0035] Furthermore, when the insert component is inserted into the connecting element, the pressure element moves the first fixing element and thus the second fixing element into their respective lower positions.

[0036] According to a third aspect, the proposed invention relates to a connection system for conducting fluids. The connection system comprises a plurality of possible embodiments of the proposed connection element and a plurality of possible embodiments of the proposed insert component.

[0037] According to a fourth aspect, the proposed invention relates to a method for reversibly providing a fluid-conducting connection. The connection method comprises providing a possible embodiment of the proposed connection system, inserting a corresponding insertion part into a receptacle of a corresponding connection element of the connection system, whereby the insertion part first presses a first fixing element into its lower position in the connection element and, due to a reversible mechanical coupling of the first fixing element with the second fixing element, presses the second fixing element into its lower position, and on its trajectory through the connection element, the insertion part releases the reversible mechanical coupling, so that the first fixing element moves to its upper position due to a spring force provided by a spring element of the first fixing element, while the second fixing element remains in its lower position, wherein the first fixing element partially overlaps the receptacle in its upper position and the second fixing element partially overlaps the receptacle in its lower position, to fix the insertion part in the connection element.

[0038] It can be arranged that the method also includes moving the second fixing element to its higher position, and moving the second fixing element from its higher position toward the main body to its middle position, so that the first fixing element is pressed into its lower position by multiple transmission elements of the second fixing element, and the second fixing element does not overlap with the receptacle of the main body.

[0039] According to a fifth aspect, the proposed invention relates to a covering element for selectively covering a display area on a body of a possible embodiment of the proposed connecting element.

[0040] The proposed covering element includes a covering body, an interface for mechanical connection with a second fixing element of the connecting element, and a plurality of recesses configured in the covering body, wherein the covering element is configured to move when the second fixing element moves, so that when the second fixing element is in its lower position, a display area configured on the body can be detected by the machine, and when the second fixing element is in its higher position, the covering body overlaps with the corresponding display area of ​​the body.

[0041] Further features, details and advantages of the invention emerge from the wording of the claims and from the following description of exemplary embodiments with the aid of the drawings, in which:

[0042] Figure 1 shows a cross section of a possible embodiment of the proposed connection system in a released state;

[0043] Figure 2 Shown according to Figure 1 A detailed view of a possible embodiment of a fixing system of a connection system;

[0044] Figure 3 Shown according to Figure 1 the sequence of movements of the fixing system of the connecting system during the insertion of the insertion element;

[0045] Figure 4 Shown according to Figure 1 A connection system in which an insertion element is inserted;

[0046] Figure 5 A possible implementation of the proposed method is shown, wherein by Figure 1 The connection provided by the connection system is released;

[0047] Figure 6 Another possible embodiment of the fixing system with a covering element according to the present invention is shown;

[0048] Figure 7 Shown with Figure 6 Another possible embodiment of the proposed connection system is a fixing system of .

[0049] Figure 1 A connection system 100 is shown. The connection system 100 comprises a connection element 101 comprising a body 103 and a fixing system 105 consisting of a first fixing element 107 and a second fixing element 109, and an insert part 111.

[0050] In the basic state, that is, when no insertion component 111 is inserted into the connecting element 101, the first fixing element 107 is in its higher position due to the spring force provided by the spring element (not shown here) of the first fixing element 107, and is mechanically connected to the second fixing element 109 through a connecting element (also not shown here), so that the first fixing element 107 also presses the second fixing element 109 into its higher position.

[0051] When the insertion member 111 is inserted or pressed into the receptacle 113 formed in the main body 103, the first fixing element 107 is first pressed into its lower position by the rib or pressure element 115 of the insertion member 111. Since the first fixing element 107 is still connected to the second fixing element 109 through the coupling element, when the first fixing element 107 moves to the lower position, the force provided by the insertion member 111 for moving the first fixing element 107 is transmitted to the second fixing element 109, and the second fixing element 109 moves toward its lower position. Accordingly, the insertion member 111 can be pushed into a predetermined fixed position in the main body 103 through the second fixing element 109.

[0052] Since the first fixing element 107 and the second fixing element 109 are automatically and linkedly moved during the insertion of the insertion member 111 into the body 103 , manual operation of the first fixing element 107 and the second fixing element 109 may be omitted.

[0053] Figure 2 A first fixing element 107 , a second fixing element 109 and a fixing system 105 including the first fixing element 107 and the second fixing element 109 are shown.

[0054] The first fixing element 107 comprises an optional closed body 201 with arms 203, each of which is provided with a coupling element 205. The coupling element 205 extends beyond the closed body 201 parallel to the central axis so as to engage in the arm 207 of the second fixing element 109 and fix the second fixing element 109 on the first fixing element 107 and mechanically couple it thereto.

[0055] Correspondingly, the movement of the arms 203 or the coupling elements 205 of the first fixing element 107 away from each other results in a free movement of the first fixing element 107, so that the first fixing element 107 can, for example, be raised, i.e. moved to its higher position, independently of the second fixing element 109. To this end, the first fixing element 107 comprises optional spring elements 215, which push the first fixing element 107 away from the body 103 when the first fixing element 107 is in its lower position.

[0056] The fixing region 217 of the first fixing element 107 serves to overlap the receptacle 113 of the connecting element 101 when the first fixing element 107 is in its upper position, so that the insertion element 111 engaging in the receptacle 113 is fixed in the connecting element 101 .

[0057] Furthermore, the second fixing element 109 comprises transmission elements 209 , 213 which engage in transmission receptacles 211 of the first fixing element 107 when the second fixing element 109 is in its upper or intermediate position, so that pressure on the second fixing element 109 leads to a movement of the first fixing element 107 .

[0058] In the present case, the transmission element 209 comprises hooks 213 which are configured such that projections of the hooks 213 overlap or engage in the transmission receptacle 211. To this end, the transmission elements 209, 213 are pressure-loaded in the direction of the transmission receptacle 211 by means of optional spring elements.

[0059] Figure 3 and Figure 4 The connecting operation for connecting the insertion element 111 to the connecting element 101 is shown. In a first step 301, the insertion element 111 is pressed into the body 103 of the connecting element 101, as indicated by the arrow 311, so that the pressure element 115 presses on the guide 305 in the form of an inclined plane of the first fixing element 107 and moves the first fixing element 107 in the direction of its lower position, as indicated by the arrow 307.

[0060] Since the first fixing element 107 is mechanically coupled to the second fixing element 109 in the receiving state, the movement of the first fixing element 107 towards its lower position is transmitted to the second fixing element 109 and the second fixing element 109 moves towards its lower position, as indicated by arrow 309 .

[0061] In the second step 303, the insertion element 111, which may be, for example, a valve of a fluid system, is further pressed into the body 103 as indicated by arrow 313. Here, the pressure element 115 moves along the guide 305, or the guide 305 moves along the pressure element 115, so that the first fixing element 107 is pressed further downward in the direction of its lower position as indicated by arrow 315 offset relative to arrow 307. Due to the movement of the first fixing element 107 to its lower position, the second fixing element 109 also moves further in the direction of its lower position to an intermediate position, in which the insertion element 111 can be inserted into the second fixing element 109, as indicated by arrow 317 offset relative to arrow 309.

[0062] exist Figure 4 , the first fixing element 107 is in its upper position and the second fixing element 109 is in its lower position.

[0063] In its upper position, the first fixing element 107 overlaps the receptacle 113, in particular via the fixing region 217, thereby preventing the insertion element 111 from sliding out of the connecting element 101. Accordingly, the fixing region 217 is flat on the side facing the second fixing element 109, thereby preventing the insertion element 111 from sliding on the fixing region 217 and moving out of the receptacle 113.

[0064] In its lowered position, the second fixing element 109 , in particular via its transmission element 209 , also overlaps the receptacle 113 , thereby preventing the insertion element 111 from sliding out of the connecting element 101 .

[0065] Figure 5 A method 500 for reversibly providing a fluid conducting connection is shown.

[0066] In the first state or fixed state 501, the first fixing element 107 is in its upper position and the second fixing element 109 is in its lower position. Accordingly, the first fixing element 107 and the second fixing element 109 each overlap with the receptacle 113, so that an insertion element (not shown here for clarity) inserted into the receptacle 113 is fixed in the body of the corresponding connecting element by the first fixing element 107 and the second fixing element 109.

[0067] When the first fixing element 107 is in its upper position and the second fixing element 109 is in its lower position, the locking element 503 of the second fixing element 109 engages in the locking element receptacle 505 of the first fixing element 107 , which prevents the second fixing element 109 from accidentally moving to its upper position.

[0068] To release the insertion element, the second fixing element 109 is pulled at its first user interface 507 as indicated by arrows 509 , 511 , moving it upwards from its lower position to its upper position, whereby the locking element 503 of the second fixing element 109 is released from the locking element receptacle 505 of the first fixing element 107 .

[0069] In the second state or transition state 513, the second fixing element 109 is in its upper position, in which the locking element 503 of the second fixing element 109 is released from the locking element receptacle 505 of the first fixing element 107 and the transmission element 207 of the second fixing element 109 is engaged in the transmission receptacle 209 of the first fixing element 107. Accordingly, as indicated by arrow 517, pressure is applied to the second user interface 515 of the second fixing element 109, causing the second fixing element 109 to move to its intermediate position and thus causing the first fixing element 107 to move to its lower position.

[0070] In the third or released state 521 , the first fixing element 107 is in its lower position and the second fixing element 109 is in its intermediate position, so that the receptacle 113 is not overlapped by either the first or second fixing element 107 , 109 and the insertion element can be removed from the body 103 .

[0071] Figure 6The fastening system 105 and a covering element 117 are shown, which comprises two recesses 119 which are movable together with the second fastening element 109 relative to the first fastening element 107 or the body 103 of the connection system 100 .

[0072] Figure 7 One configuration of the connection system 100 is shown in which a machine-readable code is displayed in the display area 121 on the body 103 .

[0073] The display area 121 is overlapped by the cover body 123 of the cover element 117 , so that the machine-readable code cannot be read when the second fixing element 109 together with the cover element 117 is in its upper position and no insertion element 111 is inserted into the body 103 .

[0074] When the insertion element 111 is inserted into the body 103, the insertion element 111 presses the second fixing element 109 together with the covering element 117 into its lower position so that the display area 121 is overlapped by the recess 119 and the machine-readable code is or can be detected by the machine.

[0075] Accordingly, the display area 121 and the recess 119 on the body 103 are oriented relative to one another such that the machine-readable code can only be detected by the machine when the second fixing element 119 together with the covering element 117 is in its lower position and the insert element 111 is fixed in the body 103. Thus, when the machine code is detected, for example by an optical scanner, the fixed connection between the insert element 111 and the body 103 can be automatically verified and, for example, a verification message can be generated.

[0076] The present invention is not limited to any one of the above-described embodiments but may be modified in various ways.

[0077] All features and advantages evident from the claims, the description and the drawings, including construction details, spatial arrangements and method steps, may be essential to the invention either alone or in any combination.

[0078] Reference numerals list

[0079] 100 Connection System

[0080] 101 Connecting elements

[0081] 103 Subject

[0082] 105 Fixing system

[0083] 107 First fixing element

[0084] 109 Second fixing element

[0085] 111 Insert Component

[0086] 113 Seats

[0087] 115 Pressure element

[0088] 117 Covering element

[0089] 119 recess

[0090] 121 Display area

[0091] 123 Covering the subject

[0092] 201 Subject

[0093] 203 Arm

[0094] 205 Motion Components

[0095] 207 Arm

[0096] 209 Transmission components

[0097] 211 Transmission housing

[0098] 215 Spring element

[0099] 301 First Step

[0100] 303 Step 2

[0101] 305 Guide

[0102] 307 Arrow

[0103] 309 Arrow

[0104] 311 Arrow

[0105] 313 Arrow

[0106] 315 Arrow

[0107] 317 Arrow

[0108] 500 Methods

[0109] 501 First Status

[0110] 503 Locking element

[0111] 505 Locking element receptacle

[0112] 507 First User Interface

[0113] 509 Middle position

[0114] 511 Arrow

[0115] 513 Second State

[0116] 515 Second User Interface

[0117] 517 Arrow

[0118] 519 Arrow

[0119] 521 Third State

Claims

1. A connecting element (101) for fluid-conducting connection with an insert component (111), in, The connecting element (101) comprises: - main body (103); - a fixing system (105); Wherein, the main body (103) comprises a fluid channel and a receptacle (113) for accommodating the insertion component (111); wherein the fixing system (105) is arranged on the body (103) and is configured to fix the insert component (111) in a predetermined position relative to the fluid channel in the receptacle (113) so as to provide a fluid conducting connection between the connecting element (101) and the insert component (111); Wherein, the fixing system (105) comprises a first fixing element (107) and a second fixing element (109); wherein the first fixing element (107) is movable between a lower position and a higher position; wherein the second fixing element (109) is movable between a higher position and a lower position; wherein the second fixing element (109) is to be reversibly mechanically connected to the first fixing element (107) via a plurality of connecting elements (205); wherein the plurality of coupling elements (205) are movable between a coupling position and a release position; Wherein, in the connection position, the plurality of connection elements (205) transmit the movement of the first fixing element (107) to the second fixing element (109), so that when the insertion component (111) moves through the main body (103) along a predetermined trajectory, the pressure element (115) of the insertion component (111) moves the first fixing element (107) to its lower position, and the first fixing element (107) moves the second fixing element (109) toward its lower position; and when the pressure element (115) further passes through the main body (103) along the predetermined trajectory and enters the second fixing element (109), the plurality of connection elements (205) release the movement of the first fixing element (107) to its higher position.

2. The connecting element (101) according to claim 1, characterized in that The first fixing element (107) comprises a plurality of spring elements (215) configured to press the first fixing element (107) from its lower position into its upper position.

3. The connecting element (101) according to claim 1 or 2, characterized in that: When the insertion member (111) moves through the body (103), the second fixing element (109) is movable between its upper position, its lower position and an intermediate position; Therein, the second fixing element (109) is in its intermediate position, between its upper position and its lower position, and releases the movement of the insertion part (111) through the body (103).

4. The connecting element (101) according to any one of the preceding claims, characterized in that The first fixing element (107) comprises adjacent arms (203) surrounding a receptacle (113) of the body (103), wherein a plurality of coupling elements (205) are arranged on each arm (203); wherein the plurality of coupling elements (205) are movable between a release position and a coupling position, and the coupling elements (205) are oriented relative to each other in their coupling positions and are oriented farther from each other in the release position than in the coupling position; Wherein, the second fixing element (109) includes a plurality of arms (207), each arm including a receptacle for engaging with a connecting element (205) among a plurality of connecting elements (205) of the first fixing element (107), so that when the plurality of connecting elements (205) are in their connecting position, the plurality of connecting elements (205) prevent the second fixing element (109) from moving relative to the first fixing element (107); and when the plurality of connecting elements (205) are in their releasing position, the second fixing element (109) is released from moving relative to the first fixing element (107).

5. The connecting element (101) according to claim 4, characterized in that The plurality of coupling elements (205) overlap the receptacle (113) in their coupled position, so that when the insertion part (111) engages into the receptacle (113), the insertion part (111) presses the plurality of coupling elements (205) into their released position.

6. The connecting element (101) according to any one of the preceding claims, characterized in that The main body (103) comprises a fixing element receptacle for partially accommodating the first fixing element (107); The first fixing element (107) is partially engaged in the fixing element receptacle at its lower position to release the receptacle (113) of the body (103), and partially overlaps with the receptacle (113) at its upper position.

7. The connecting element (101) according to any one of the preceding claims, characterized in that The second fixing element (109) is movable between its upper position, its intermediate position and its lower position; And the second fixing element (109) includes a plurality of transmission elements (207), which are configured to transmit the pressure applied to the second fixing element (109) to the first fixing element (107) when the second fixing element (109) moves from its higher position to its middle position, so as to move the first fixing element (107) from its higher position where it partially overlaps with the receptacle (113) of the main body (103) to its lower position where it releases the receptacle (113) of the main body (103).

8. The connecting element (101) according to claim 7, characterized in that The second fixing element (109) itself partially overlaps the receptacle (113) of the body (103) in its lower position, and the locking element (503) of the second fixing element (109) engages in the locking element receptacle (505) of the first fixing element (107) so as to fix the first fixing element (107) in its lower position; In which, the second fixing element (109) is in its middle position, which is elevated relative to the lower position of the second fixing element (109), and in this position, multiple transmission elements (209) of the second fixing element (109) are engaged on the first fixing element (107), and the locking element (503) is released from the locking element receptacle (505).

9. The connecting element (101) according to claim 7 or 8, characterized in that The second fixing element (109) includes a plurality of first user interfaces (507) for manually moving the second fixing element (109) from its lower position to its upper position; and a plurality of user interfaces (507) for manually moving the second fixing element (109) from its upper position to its intermediate position.

10. The connecting element (101) according to any one of the preceding claims, characterized in that A plurality of recesses (119) are arranged in the second fixing element (109), and when the second fixing element (109) is in its lower position, a plurality of display areas (121) arranged on the main body (103) can be seen through the recesses; and Wherein, when the second fixing element (109) is in its higher position, the area of ​​the second fixing element (109) surrounding the corresponding recess (119) overlaps with the corresponding display area (121).

11. An insert component (111) for fluid-conducting connection with a connecting element (101) according to any one of claims 1 to 10, in, The insert component (111) comprises a body (103) having a channel for conducting a fluid and a plurality of pressure elements (115) arranged on the body, wherein the pressure elements (115) are spaced apart from each other so that when the insert component (111) is fixed in the connecting element (101), the first fixing element (107) and the second fixing element (109) are engaged between two pressure elements (115) among the plurality of pressure elements (115); and Wherein, the insertion component (111) is configured to move the first fixing element (107) of the connecting element (101) to its lower position and thereby move the second fixing element (109) to its lower position when moving through the body (113) along a predetermined trajectory.

12. A connection system (100) for conducting a fluid, wherein: The connection system (100) comprises a plurality of connection elements (101) according to any one of claims 1 to 10 and a plurality of insert components (111) according to claim 10.

13. A method (500) for reversibly providing a fluid conducting connection, in, The connection method (500) comprises: - providing a connection system (100) according to claim 13; - inserting a corresponding insertion part (111) into a receptacle (113) of a corresponding connecting element (101) of the connecting system (100), whereby the insertion part (111) first presses the first fixing element (107) into its lower position in the connecting element (101) and, due to the reversible mechanical coupling of the first fixing element (107) with the second fixing element (109), presses the second fixing element (109) into its lower position; and the insertion part (111) releases the reversible mechanical coupling on its path through the connecting element (101), so that the first fixing element (107) moves to its upper position due to the spring force provided by the spring element (215) of the first fixing element (109), while the second fixing element (109) remains in its lower position; The first fixing element (107) partially overlaps the receptacle (113) at its higher position, and the second fixing element (109) partially overlaps the receptacle (113) at its lower position, so as to fix the insertion component (111) in the connecting element (101).

14. The method (500) according to claim 13, characterized in that: The method (500) further comprises: - moving the second fixing element (109) to its upper position; and -Move the second fixing element (109) from its higher position to its intermediate position in the direction of the main body (103), so that the first fixing element (107) is pressed into its lower position by multiple transmission elements of the second fixing element (109), and the second fixing element (109) does not overlap with the receptacle (113) of the main body (103).

15. A covering element (117) for selectively covering a display area (119) on a body (103) of a connecting element (101) according to any one of claims 1 to 10, in, The covering element (117) comprises: - a covering body (123); - an interface for mechanical connection with a second fixing element (109) of the connecting element (101); - a plurality of recesses (119) arranged in the cover body (123); wherein the covering element (117) is configured to move when the second fixing element (109) moves, so that when the second fixing element (19) is in its lower position, the display area configured on the body (103) can be detected by the machine; and When the second fixing element (109) is in its upper position, the covering body (123) overlaps with a corresponding display area of ​​the body (103).

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