CONNECTION DEVICE FOR CONNECTING A FLUID LINE TO A CONNECTION BODY - Patent application

Abstract

To provide a connection device for connecting a fluid line to a connection boody.SOLUTION: In a connection device 1 for connecting a fluid line 2 to a connection body 4, the connection device 1 incudes a foundation body 3 insertable to a connection opening 5 of the connection body 4 by a connecting portion 21 by means of forcible fitting and / or shape fitting methods, the foundation body 3 includes a through opening 16 for receiving a terminal end portion of the fluid line 2 in a longitudinal direction L, fastening means 7 designed to retain the fluid line 2 in the foundation body 3 is disposed in the through opening 16, first spacer means 9 and first seal means 10 disposed in adjacent to the fastening means 7 in the longitudinal direction L are pressed on the terminal end portion of the fluid line 2, and closing means 8 having an insertion opening 19 for the fluid line 2 is disposed on a closing part 22 of the foundation body 3 facing a direction separating from the connection body 4.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The invention relates to a connecting device for connecting a fluid line to a connecting body according to the preamble of claim 1. [Background technology]

[0002] Several embodiments of a connecting device for a fluid line to be connected to a connecting body are known, in which the connecting device is inserted into the connecting body and then the end of the fluid line is introduced into the connecting device. In principle, the end of the fluid line is Mounting Means and is therefore secured to the connector.

[0003] DE 10 2004 013 14 A1 describes a connection device for the plug-in connection of fluid lines, which comprises a basic body with closure means. Assembly In the front area in the direction, the basic body has a threaded shaft with an external thread, by means of which the threaded shaft is screwed into the threaded hole of the connecting body. Assembly Insert the male thread of the base body in the opposite direction. seal The sections are adjacent, seal The part is circular Sealing means The base body has a circumferentially extending groove in which the Sealing means For the connective body by seal The base body further includes an inner through-opening extending axially together with the contact shoulder, on which: Mounting Means followed by spacer means and Sealing means but Assembly In this case, the spacer means is Mounting Means and Sealing means It is placed between. Sealing means , spacer means and Mounting Means The inward-facing contact shoulders allow the base body to be inserted into the through-opening. Assembly The connector is held in the axial direction, thereby preventing axial displacement of the connector. Mounting Means , spacer means and Sealing means After being inserted into the through opening of the foundation body, the closing means AssemblyThe closing means has an insertion opening for inserting the fluid line in the axial direction, and an internal groove is formed in the insertion opening of the closing means. Sealing means In the inserted state, the closure means is Assembly The inwardly facing end surface is located on the stepped surface in the through opening and is located in the through opening. Assembled Ta Sealing means When pressure is applied, the inserted Sealing means , spacer means and Mounting Means together with the fluid line from the through opening of the foundation body. Assembly The closing means can prevent the device from being pulled out in the opposite direction. Assembly The fastening is achieved by folding the closure means at the rear end of the basic body in the direction of the arrow A. However, fastening can alternatively be achieved by pushing or latching the closure means into place.

[0004] It has been found that in the above-mentioned connection devices according to the prior art, the closure means and the basic body are irreleasably connected. In order to be able to release the closure means from the basic body, the closure means and / or the closure means must Assembled The foundation body must be destroyed.

[0005] The disadvantage of this method is that when replacing a defective connection, the base body is closed by a non-removable closing means. Mounting Means , spacer means and Sealing means The problem is that the plug-in fluid line cannot be easily pulled out of the basic body. A faulty connection can be replaced only by disconnecting the fluid line.

[0006] Due to the irremovable connection between the closure means and the basic body, the fluid line must be cut outside the connecting device, which has the disadvantage that after cutting, the fluid line no longer has the minimum required length and cannot be connected to a new connecting device and connector, and therefore the fluid line must also be replaced to have the minimum required length for connection.

[0007] Another disadvantage is that the connection between the closure means and the base body is non-removable, so that when replacing a faulty connection device, it is necessary to remove the Sealing means , spacer means and Mounting Means The problem is that the base cannot be removed and reused. Sealing means , spacer means and Mounting Means is therefore lost when the faulty connection is replaced.

[0008] Inserted into the foundation body Sealing means , spacer means and Mounting Means To optionally reuse after replacement, Sealing means , spacer means and Mounting Means The faulty connection must be destroyed so that it can be removed. Sealing means is inserted into the foundation body so that it rests flat inside the non-removable closure means within the foundation body. Sealing means There is a risk of damage. [Prior art documents] [Patent documents]

[0009] [Patent Document 1] International Publication No. 2017 / 129667A1 Brochure Summary of the Invention [Problem to be solved by the invention]

[0010] The present invention is based on the object of providing a connecting device for connecting a fluid line to a connector. Assembly This also makes it possible to easily and reliably remove the attachment. [Means for solving the problem]

[0011] The basic object of the invention is achieved by the features of the main claim. Preferred embodiments can be found in the dependent claims.

[0012] The connecting device according to the invention is used, for example, in a connection body of a motor vehicle, preferably referred to as a pressure medium supply device or valve block, so that the pressure medium supply device can be connected to other parts of the motor vehicle via fluid lines, preferably referred to as pressure medium lines.

[0013] Further preferred embodiments of the invention will become apparent from the following description of exemplary embodiments based on the drawings. [Brief explanation of the drawings]

[0014] [Figure 1] 1 illustrates an exemplary connection device. [Figure 2a] 1 shows a closure means with differently designed fastening means; [Figure 2b] 1 shows a closure means with differently designed fastening means; [Figure 2c] 1 shows a closure means with differently designed fastening means; [Figure 2d] 1 shows a closure means with differently designed fastening means; DETAILED DESCRIPTION OF THE INVENTION

[0015] 1 shows in cross section an exemplary connecting device 1 which includes a basic body 3 in the form of a hollow cylinder having a through opening 16 for receiving the end of a fluid line 2, the basic body 3 being received in a connecting opening 5 in a connecting body 4. The connecting body 4 can be, for example, a pressure medium supply or a valve block of a vehicle.

[0016] By way of example, the foundation body 3 is screwed into the connection opening 5 by means of a screw. For this purpose, the foundation body 3 comprises an external thread at the joint 21 and a corresponding internal thread at the connection opening 5. This means that the foundation body 3 is fixedly connected to the connection opening 5 in the connection body 4. Other force-fit and / or form-fit methods of connecting the foundation body 3 and the connection body 4 are also possible. For example, the foundation body 3 can be press-fit into the connection opening 5 in the connection body 4.

[0017] By means of the connecting device 1 , the end of the fluid line 2 is fixedly connected to the connecting body 4 so that pressure medium can be conducted through the fluid line 2 to or from the connecting body 4 .

[0018] To connect the fluid line 2 to the connection body 4, the end of the fluid line 2 is inserted along the longitudinal axis L of the connection device 1 through the bayonet opening 19 in the closure means 8 into the through opening 16 of the basic body 3. The bayonet opening 19 is designed to receive the end of the fluid line 2 and to hold it in the connection device 1. Mounting Means 7 is arranged within the base body 3. Mounting Means 7 can be, for example, a serrated lock washer or a lock washer. Mounting Means 7 is axially displaceable and rotatable in the through opening 16 in the basic body 3 bearing In the base body 3 Mounting Means The loose reception of the fluid line 2 in the connecting device 1 allows free movement along the longitudinal axis L and free rotation around this axis within the basic body 3 of the received end of the fluid line 2. Assembly The end of the fluid line 2 is easily attached and detached, and can be held and displaced at various holding positions. Mounting Means When inserted through 7, Mounting Means 7 are folded out from the end portion. The tabs, which interact with the outer wall of the fluid line 2 during processing, act on the fluid line 2 as barbs with a certain resistance force. The end portion of the fluid line 2 is thus held in the basic body 3 and fixed against pulling out or pushing out. Mounting Means 7 rests with its outer ring on a contact shoulder 20 of the basic body 3. The contact shoulder 20 is formed in the through opening 16 in the basic body 3 and projects radially inwards, so that the diameter of the through opening 16 also tapers in the direction of the connecting opening 5.

[0019] To prevent the end of the fluid line 2 from being pushed too deeply into the connecting body 4 upon introduction, an annular end stop 17 is also formed in the basic body 3. The end stop 17 is formed as a radially inward collar at the lower edge of the joint 21 of the basic body 3. The end of the fluid line 2 abuts against said collar and cannot proceed further. At the same time, the end stop 17 forms the outlet opening of the connecting device 1.

[0020] The closing means 8 is arranged on the exposed part of the foundation body 3 and Assembly The closure means 8 serves as a closure part 22 in the direction Y. The closure means 8 is fixedly attached to the basic body 3, but Removal The closure means 8 includes fastening means 13 for non-destructively connecting the closure means 8 to the basic body 3. The non-destructive fastening and the various types of connections will be described in more detail in the description of figures 2a-d. The plug-in opening 19 of the closure means 8 has a smaller diameter than the through-opening 16 in the basic body 3. The closure means 8 therefore at least partially covers the through-opening 16 from above.

[0021] Mounting Means In addition to the 7, further means are arranged inside the through opening 16, which are Installation and seal contribute to. Assembly Looking from the opposite direction to direction Y, Mounting Means 7 followed by the first spacer means 9 Mounting Means 7. A small gap is provided between the first Sealing means 10 is followed by a second spacer means 11, which is spaced slightly apart from the latter. Sealing means The placement of the closing means 8, which holds the means 7, 9, 10, 11 and 12 in the through openings 16 in the base body 3, is completed. As a result, the first spacer means 9, the first Sealing means 10, second spacer means 11 and second Sealing means 12 is inserted to cover the end of the fluid line 2.

[0022] Mounting Means 7 is a first spacer means 9 that transfers tensile and / or compressive forces acting on the fluid line 2 to the first spacer means 9. Sealing means 10, and further to the second spacer means 11 and the second Sealing means 12 to the closing means 8. Mounting Means 7, first spacer means 9, first Sealing means 10, second spacer means 11 and second Sealing means 12 is longitudinally movable within the through opening 16 of the base body 3 It is supported Therefore, when tensile and / or compressive forces act on the fluid line 2, Sealing means 10, 12 more compression is achieved and therefore more resistant to internal and external influences seal The effect is achieved.

[0023] The second spacer means 11 is Sealing means The advantage is that the second spacer means 11 has a suitable seat and functions properly in the basic body 3. The meaning and purpose of the second spacer means 11 is to Mounting Means 7, first spacer means 9 and first Sealing means 10, the closing means 8 is attached to the base body 3 Assembled Before Assembled The second spacer means 11 is arranged so that the fluid lines 2 are aligned flatly with each other after the through openings 16 of the basic body 3. Assembly It also has the advantage that it is more easily guided and therefore better aligned during insertion and removal. Mounting Means 7 is pushed vertically into the through opening 16 so that it does not become wedged and get damaged.

[0024] The second spacer means 11 allows the fluid line 2 to be spaced apart from the second spacer means 11 during removal. Sealing means 12 can be removed from the defective connection device 1 and later attached to a new connection device 1. Assembled It is further advantageous that the material is better introduced and protected from damage when it is applied.

[0025] Second Sealing means 12 connects the fluid line 2 in the region of the bayonet opening 19 of the closing means 8 seal This means that the closing means on the sealing means can be omitted. Sealing means12 serves to protect against environmental influences such as water, dirt or other media. The connection device 1 is therefore protected against external influences that may act on the fluid line 2 received therein. seal will be done.

[0026] In particular, when the connection device 1 is used in a vehicle, the fluid line 2 is subjected to tensile and / or compressive forces. Sealing means 10, 12, by compressing them, the fluid line 2 can be particularly easily made airtight. seal This protects the fluid line 2 against the influence of the external environment.

[0027] The closure means 8, which has a small bayonet opening 19 relative to the diameter of the through opening 16, is designed to absorb tensile and / or compressive forces acting on the fluid line 2, said forces being: Mounting Means 7, first spacer means 9, first Sealing means 10, second spacer means 11 and second Sealing means 12 to the closing means.

[0028] The base body 3 is made of, for example, a corrosion-resistant plastic material, thereby preventing corrosion between the connector 4 and the base body 3. For example, polyolefin, polyvinyl chloride, fluororesin, etc. are used as the plastic. These plastic materials are cheaper than, for example, brass, and are easier to manufacture and process the connector 1. Furthermore, these plastic materials provide resistance to galvanic corrosion of the connector 1 relative to the connector 4 under environmental influences during operation, such as salt and water.

[0029] The base body 3 extends circumferentially on its outer periphery at the transition from the joint 21 in the direction of the closing portion 22 and Sealing means 6 further comprises a flange 15 having a groove 14 in which the base body 3 is used, so that the base body 3 can be secured to the connecting body 4 seal This prevents fluid from leaking from the connector 4 along the connection with the basic body 3.

[0030] In the following figures 2a-d different types of closing means 8 on the basic body 3 are shown. Installation Shows.

[0031] 2a shows a first exemplary connection of the closure means 8 to the basic body 3. The connection of the closure means 8 to the basic body 3 is designed in the form of a bayonet closure. The fastening means 13 of the closure means 8 comprises an inner bayonet groove, which interacts with a bayonet cam formed in the area of ​​the closure part of the basic body 3. The closure means 8 is Assembly The cam is engaged in the groove by rotating the closure means 8 and the basic body 3 in the opposite direction. The closure means 8 is thereby rotated axially in the basic body 3. Removable The connection can be opened again by simply rotating the closure means 8.

[0032] 2b shows a second exemplary connection of the closure means 8 to the basic body 3. The closure means 8 comprises a plurality of snap hooks as fastening means 13. These snap hooks are Assembly The closure means 8 extends in the direction Y. As its counterpart, a circumferentially extending groove is provided in the closure part of the basic body 3 for the snap hook to engage. With this type of connection, the closure means 8 is simply inserted axially into the basic body 3 until the snap hook catches in the groove. The closure means 8 can be released from the basic body 3 by radially stretching the snap hook.

[0033] Figure 2c shows a third exemplary type of connection of the closure means 8 to the basic body 3, which is based on the same operating principle as the exemplary embodiment of Figure 2b. In this case, the fastening means 13 of the closure means 8 are provided with recesses which are designed to receive respective hooks formed on the basic body 3.

[0034] Finally, Figure 2d shows a fourth exemplary type of connection of the closure means 8 to the basic body 3. In this case, the fastening means 13 is designed as an internal thread on the closure means 8, which is designed to interact with an external thread formed in the area of ​​the closure part on the basic body 3. This means that the closure means 8 AssemblyThe closure means 8 is secured against unscrewing by means of teeth extending circumferentially at its lower edge and engaging with corresponding counterparts on the basic body 3 during fastening. In this case, the locking teeth of the closure means 8 mesh with the locking teeth of the basic body 3, securing the connection against twisting or unscrewing.

[0035] The advantage of the non-destructive removal of the closure means 8 according to Figures 2a-d is that after the closure means 8 has been extracted from the basic body 3: Mounting Means , spacer means and Sealing means The advantage of this is that the pressed fluid line can be pulled out from the basic body 3. Therefore, there is no need to disconnect the fluid line in order to replace a faulty connection device.

[0036] Another advantage is that after the fluid lines are pulled, Mounting Means This is done by breaking down and removing the Sealing means This means that the spacer means can be pulled out and reused. This has the advantage that when replacing a faulty connection device, the fluid line does not have to be disconnected and can therefore be used to connect to a new connection device. The present application relates to the invention described in the claims, but also includes the following as other aspects. 1. A connection device (1) for connecting a fluid line (2) to a connection body (4), comprising a base body (3) insertable by means of a joint (21) into a connection opening (5) of the connection body (4) in a force-fit and / or form-fit manner, the base body (3) comprising a through-opening (16) in a longitudinal direction (L) into which the end of the fluid line (2) is received and which is designed to hold the fluid line (2) within the base body (3). Mounting Means (7) is disposed in the through opening (16) and is Mounting Means (7) adjacent to the first spacer means (9) and the first Sealing means (10) is located above the end of the fluid line (2). It is covered byA closure means (8) having an insertion opening (19) for the fluid line (2) is provided in a closure part (22) of the basic body (3) facing away from the connecting body (4). It is assembled , so that the said disposed in the through opening (16) Mounting Means (7), the first spacer means (9) and the first Sealing means (10) is held in the through opening (16) of the base body (3), in the connection device (1), further, Sealing means A second spacer means (11) disposed between the closure means (8) and the fluid line (2) is disposed above the end of the fluid line (2). It is covered by A connection device (1) characterized by: 2. Second Sealing means The connection device (1) according to claim 1, characterized in that (12) is disposed within the through opening (16) of the basic body (3) between the second spacer means (11) and the closing means (8). 3. The connection device (1) of claim 1 or 2, wherein the first spacer means (9) and the second spacer means (11) are not elastically deformable. 4. The connection device (1) of any one of 1 to 3 above, characterized in that the insertion opening (19) of the closing means (8) has a smaller diameter than the through opening (16) of the basic body (3). 5. The first spacer means (9), the first Sealing means 5. The connection device (1) according to any one of the above items 1 to 4, wherein the first spacer means (10) and the second spacer means (11) are arranged spatially separated from each other in the longitudinal direction (L). 6. The first spacer means (9), the first Sealing means 6. The connecting device (1) of claim 5, wherein the second spacer means (10) and the second spacer means (11) are movable relative to each other in the longitudinal direction (L) under tensile and / or compressive load of the fluid line (2). 7. The closing means (8) comprises at least one fastening means (13) by means of which the closing means is fastened to the base body (3). Removal7. The connection device (1) according to any one of the above items 1 to 6, characterized in that it includes at least one fastening means (13) that can be connected in a non-destructive manner. 8. The connecting device (1) of claim 7, characterized in that the fixing means (13) is designed with a plurality of bayonet cams, and the plurality of bayonet cams are designed to engage with corresponding bayonet grooves formed on the closing portion (22) of the basic body (3). 9. The connecting device (1) as set forth in claim 7, characterized in that the fastening means (13) are designed with a plurality of snap-action hooks, which are designed to engage with corresponding grooves formed on the closure portion (22) of the basic body (3) and extending in the circumferential direction. 10. The fastening means (13) are designed with a plurality of tabs with inner recesses, which tabs are fastened to the closure of the basic body (3). portion 9. The connecting device (1) as set forth in claim 7, characterized in that it is designed to receive a corresponding hook formed on (22). 11. The connecting device (1) of claim 7, characterized in that the fastening means (13) are in the form of an internal thread designed to be screwed into an external thread formed on the closing portion (22) of the basic body (3). 12. The connecting device (1) of claim 11, characterized in that the closure means (8) comprises circumferentially extending teeth designed to interact with corresponding teeth on the closure portion (22) of the basic body (3). [Explanation of symbols]

[0037] 1. Connecting Device 2 fluid lines 3. Foundation body 4 Connectors 5 Connection opening 6. Base body Sealing means 7 Mounting Means 8 Closing means 9 First spacer means 10 First Sealing means 11 second spacer means 12 Second Sealing means 13 Fixing means 14 groove 15 flange 16 Through opening 17 End Stop 18 threads 19 Insertion opening 20 Contact shoulder 21 Joint 22 Closed part L Longitudinal axis Y installation direction

Claims

1. A connection device (1) for connecting a fluid line (2) to a connection body (4), comprising a base body (3) insertable by means of a joint (21) into a connection opening (5) of the connection body (4) in a force-fit and / or form-fit manner, the base body (3) comprising a through-opening (16) in a longitudinal direction (L) into which a terminal end of the fluid line (2) is received, and attachment means (7) designed to hold the fluid line (2) in the base body (3) are arranged in the through-opening (16) and adjacent to the attachment means (7) in the longitudinal direction (L). a connecting device (1) in which a first spacer means (9) and a first sealing means (10) are placed over the end of the fluid line (2), and a closing means (8) having an insertion opening (19) for the fluid line (2) is removably assembled to a closing part (22) of the basic body (3) facing away from the connecting body (4), so that the mounting means (7), the first spacer means (9) and the first sealing means (10) arranged in the through opening (16) are held in the through opening (16) of the basic body (3), The connecting device (1) is further characterized in that a second spacer means (11) disposed between the first sealing means (10) and the closing means (8) is placed over the end portion of the fluid line (2), a second sealing means (12) is disposed in the through opening (16) of the basic body (3) between the second spacer means (11) and the closing means (8), and the mounting means (7), the first spacer means (9), the first sealing means (10), the second spacer means (11) and the second sealing means (12) are supported within the through opening (16) so as to be movable in the longitudinal direction (L).

2. 2. A connecting device (1) according to claim 1, characterized in that the first spacer means (9) and the second spacer means (11) are not elastically deformable.

3. 3. The connecting device (1) according to claim 1 or 2, characterized in that the plug-in opening (19) of the closing means (8) has a smaller diameter than the through-opening (16) of the basic body (3).

4. 3. The connecting device (1) according to claim 1 or 2, characterized in that the first spacer means (9), the first sealing means (10) and the second spacer means (11) are movable relative to each other in the longitudinal direction (L) under tensile and / or compressive loads of the fluid line (2).

5. 3. A connecting device (1) according to claim 1 or 2, characterized in that the closing means (8) comprises at least one fastening means (13) by means of which the closing means is removably and non-destructively connected to the basic body (3).

6. 6. The connecting device (1) according to claim 5, characterized in that the fastening means (13) are designed with a plurality of bayonet cams, which are designed to engage with corresponding bayonet grooves formed on the closing part (22) of the basic body (3).

7. 6. The connecting device (1) according to claim 5, characterized in that the fastening means (13) are designed with a plurality of snap-action hooks, which are designed to engage with corresponding grooves formed circumferentially on the closing part (22) of the basic body (3).

8. 6. The connecting device (1) according to claim 5, characterized in that the fastening means (13) are designed with a plurality of tabs with inner recesses, the plurality of tabs being designed to receive corresponding hooks formed on the closing part (22) of the basic body (3).

9. 6. A connecting device (1) according to claim 5, characterized in that the fastening means (13) are in the form of an internal thread designed to be screwed into an external thread formed on the closing portion (22) of the basic body (3).

10. 10. The connecting device (1) according to claim 9, characterized in that the closure means (8) comprise circumferentially extending teeth designed to interact with corresponding teeth on the closure portion (22) of the basic body (3).

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