Wiring harness waterproof sealing element for new energy automobile

Abstract

The invention relates to the technical field of automobile spare parts, and particularly discloses a wire harness waterproof sealing element for a new energy automobile, the wire harness waterproof sealing element comprises a connecting female head and a connecting male head, one end of the connecting female head can be inserted into the connecting male head, the connecting female head comprises a pipe body, a locking nut is arranged on the outer side of the pipe body, and the connecting male head comprises a mounting plate; a rotatable rotating cylinder is arranged in the mounting plate, the locking nut can be screwed on the outer side of the rotating cylinder, a rotatable rotating head is arranged in one end of the rotating cylinder, and the rotating head is electrically connected with the rotating cylinder. According to the invention, the wire harness and the connector are prevented from being bent, so that the wire harness is protected. And the rotating cylinder is not easy to rotate, so that when the pipe body is inserted into the rotating cylinder, the inserting groove can be more easily aligned with the inserting block to be inserted, and the connecting female head can be more easily connected with the connecting male head. When the rotating cylinder rotates, the rotating head connected with the wire harness does not rotate, so that a wire in the equipment is prevented from rotating, and the stability of the wire in the equipment is ensured.

Description

Technical Field

[0001] The present invention relates to the technical field of automobile parts, and in particular to a wiring harness waterproof seal for new energy vehicles. Background Art

[0002] In the automotive electrical and electronic system, the automotive wiring harness is an important component that connects various electrical and electronic equipment in the car. It is an important factor for the safe and stable operation of the car and an important part of the quality evaluation system. The existing automotive wiring harness waterproofing forms are mainly divided into two categories: one is waterproofing from the level of wiring harness component selection, and the other is waterproofing from the level of wiring harness layout. Waterproof connectors are generally used for wiring harnesses in wet areas of automobiles. Waterproof connectors can ensure the mechanical and electrical properties inside the connector under a certain water pressure.

[0003] The existing connector includes multiple pins and multiple sockets. When connecting, the pins and the sockets need to correspond one to one, which causes the connector to be twisted during installation. When the connector is twisted, it also causes the wiring harness to twist. This twisting may cause the wires, insulation layers or connectors inside the wiring harness to be subjected to different degrees of stress, thereby affecting the performance and life of the wiring harness.

[0004] When the connector has a bending angle, the wire harness connected to the twisted connector will be folded after being driven to rotate (an angle is formed between the wire harness and the connector), which further affects the performance and life of the wire harness. Therefore, those skilled in the art provide a waterproof seal for wire harnesses for new energy vehicles to solve the problems raised in the above background technology. Summary of the invention

[0005] In order to solve the above technical problems, the present invention provides a waterproof seal for a wiring harness for a new energy vehicle, comprising a female connector and a male connector, wherein one end of the female connector can be inserted into the male connector, the female connector comprises a tube body, a locking nut is provided on the outside of the tube body, the male connector comprises a mounting plate, a rotatable rotating cylinder is provided inside the mounting plate, the locking nut can be screwed on the outside of the rotating cylinder, a rotatable rotating head is provided inside one end of the rotating cylinder, and the rotating head is electrically connected to the rotating cylinder.

[0006] Preferably: one end of the connecting female head is connected to a locking tail end, the locking tail end includes a tail end body, a hexagonal ring is fixedly connected to the outside of the tail end body, one end of the tail end body is provided with multiple slots to form an elastic part, a connecting thread is provided on the outside of the tail end body between the hexagonal ring and the elastic part, a waterproof sleeve is provided inside the elastic part, a locking mouth is provided inside the tube body, and one end of the elastic part is an oblique mouth.

[0007] Preferably: a terminal block is installed inside the tube body, a plurality of jacks are provided on the terminal block, the jacks can be connected to the wires, a sealing ring is provided between the terminal block and the tube body, a plurality of pins are provided inside the rotating cylinder, and the pins can be inserted into the jacks.

[0008] Preferably: a retaining ring is provided on the outside of the tube body, the retaining ring is located inside the locking nut, a sealing ring 2 is provided at one end of the locking nut, a plurality of slots extending along the outside of the tube body are provided at one end of the tube body, an annular step groove is provided at one end of the tube body, the step groove is connected to one end of the slot, a plurality of insertion blocks are provided inside the rotating cylinder, and the insertion blocks can be inserted into the slots.

[0009] Preferably, the slots are arranged around one end of the tube body to form a circle, and the spacing between the slots is unequal.

[0010] Preferably: the rotating cylinder as a whole is composed of two sections of cylinders with different diameters, the rotating cylinder is fixedly connected with a connecting ring at the intersection of the diameters, a mounting ring is installed on one side of the connecting ring through a mounting bolt, a ball is provided between one side of the mounting ring and the connecting ring, a plurality of limit blocks are provided on the other side of the mounting ring, a protruding cylinder is provided on one side of the mounting plate, the connecting ring and the mounting ring are both located inside the cylinder, and a sealing ring three is provided inside the cylinder on one side of the mounting ring.

[0011] Preferably: the male connector is mounted on the housing, the sealing ring 3 is located outside the housing, and a sealing gasket is provided on the outside of the cylinder protruding from the mounting plate.

[0012] Preferably: a rotating head is rotatably connected to one side of the rotating cylinder, a plurality of conductive rings which do not contact each other are arranged on the outside of the rotating head, a conductive part 1 is fixedly connected to one end of the pin, a conductive block is arranged on the conductive part 1, the conductive blocks are respectively in contact with different conductive rings, a conductive part 2 is fixedly connected inside the conductive ring, a connecting cover is provided on one side of the rotating head, a plurality of connecting pins are installed on the connecting cover, and the conductive part 2 is inserted into the connecting pins.

[0013] Preferably, a spring is fixedly connected inside the rotating head, one end of the spring is connected to the connection cover, and a protective piece is provided on one side of the second conductive piece inside the rotating head, and the protective piece can lift up the connection cover.

[0014] Preferably, an angle is formed between the bent one end of the tube and the other end.

[0015] Technical effects and advantages of the present invention:

[0016] 1. The present invention is designed with a rotatable rotating cylinder, so that before tightening the locking nut, the angle of the pin can be rotated to adjust, thereby avoiding the twisting state of the wiring harness during connection. At the same time, when the connector is bent, the tail end of the connector connected to the wiring harness can be directed towards the direction of the wiring harness, thereby avoiding the bending between the wiring harness and the connector, thereby protecting the wiring harness.

[0017] 2. The present invention is designed with a mounting ring. When the rotating cylinder moves forward with the mounting ring, the ball contacts the mounting plate, and the rotating cylinder can rotate more smoothly. When the mounting ring moves backward with the rotating cylinder, the limit block contacts the sealing ring, so that the rotating cylinder is not easy to rotate. When the tube body is inserted into the rotating cylinder, the slot can be more easily aligned with the insertion block and inserted, thereby ensuring that the female connector is easier to connect with the male connector.

[0018] 3. The present invention is designed with a rotating head, which can rotate relative to the rotating cylinder, so that when the rotating cylinder rotates, the rotating head connected to the wiring harness does not rotate, thereby avoiding the rotation of the wires inside the device and ensuring the stability of the wires inside the device. At the same time, through the protective part inside the rotating head, the power supply to the inside of the device can be disconnected when the conductive part is overheated. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the structure provided by this application;

[0020] Figure 2 It is a schematic diagram of the structure of the locking tail end provided by the present application;

[0021] Figure 3 It is a schematic diagram of the structure inside the female connector provided by the present application;

[0022] Figure 4 It is a schematic diagram of the structure of the female connector provided by this application;

[0023] Figure 5 It is a schematic diagram of the structure of the male connector provided by this application;

[0024] Figure 6 It is a structural schematic diagram of the male connector provided by the present application installed on the housing;

[0025] Figure 7 It is a schematic diagram of the structure of the rotating drum provided by the present application;

[0026] Figure 8 It is a schematic diagram of the structure of the mounting ring provided by the present application;

[0027] Fig. 9 This application provides Figure 8 The structural diagram of A in the figure;

[0028] Fig.10 It is a schematic diagram of the structure of the pin and the rotating head provided by the present application;

[0029] Fig.11 It is a schematic diagram of the structure of the conductive ring provided by the present application;

[0030] Fig.12 It is a schematic diagram of the internal structure provided by this application;

[0031] Fig.13 is a structural schematic diagram of the connection cover provided by the present application;

[0032] In the figure:

[0033] 1. Connecting female connector; 11. Tube body; 12. Locking port; 13. Retaining ring; 14. Wiring terminal; 141. Jack; 15. Sealing ring 1; 16. Locking nut; 161. Sealing ring 2; 17. Slot; 171. Step groove;

[0034] 2. Locking tail end; 21. Tail end body; 22. Hexagonal ring; 23. Elastic member; 24. Connecting thread; 25. Waterproof cover;

[0035] 3. Connecting male connector; 31. Mounting plate; 311. Sealing ring 3;

[0036] 32, rotating cylinder; 321, plug pin; 3211, conductive member 1; 3212, conductive block; 322, insertion block;

[0037] 323, connecting ring; 324, mounting ring; 3241, ball bearing; 3242, limit block; 3243, mounting bolt;

[0038] 325, rotating head; 3251, conductive ring; 3252, conductive part 2; 3253, spring; 3254, connecting cover; 3255, connecting pin; 326, protective part;

[0039] 33. Sealing gasket; DETAILED DESCRIPTION

[0040] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0041] See also Figures 1 to 13 In this embodiment, a wiring harness waterproof seal for new energy vehicles is provided, including a female connector 1 and a male connector 3. One end of the female connector 1 can be inserted into the male connector 3. The female connector 1 includes a tube body 11. A locking nut 16 is provided on the outside of the tube body 11. The male connector 3 includes a mounting plate 31. A rotatable rotating cylinder 32 is provided inside the mounting plate 31. The locking nut 16 can be screwed on the outside of the rotating cylinder 32. A rotatable rotating head 325 is provided inside one end of the rotating cylinder 32. The rotating head 325 is electrically connected to the rotating cylinder 32.

[0042] When in use, the wiring harness is connected to the female connector 1, and the male connector 3 is installed on the sealed housing, so as to realize the electrical connection between the components inside the housing and the outside. The circuit is connected by connecting the female connector 1 and the male connector 3. The rotating cylinder 32 can be rotated, so that the angle of the tube body 11 inserted into the rotating cylinder 32 can be adjusted before connection, so as to avoid the wiring harness from twisting during connection, thereby affecting the performance and life due to stress. The rotating cylinder 32 is rotatably connected to the rotating head 325, so as to ensure that the rotating head 325 maintains electrical connection with the components inside the housing during the rotation adjustment of the rotating cylinder 32, and the connected wires will not twist with the rotation of the rotating cylinder 32, so that the connection is affected and not stable enough.

[0043] In further embodiments, see Figures 1-2 One end of the connecting female head 1 is connected to a locking tail end 2, and the locking tail end 2 includes a tail end body 21, and a hexagonal ring 22 is fixedly connected to the outside of the tail end body 21. One end of the tail end body 21 is provided with multiple grooves to form an elastic member 23. A connecting thread 24 is provided on the outside of the tail end body 21 between the hexagonal ring 22 and the elastic member 23. A waterproof sleeve 25 is provided inside the elastic member 23. A locking mouth 12 is provided inside the tube body 11, and one end of the elastic member 23 is an oblique mouth.

[0044] Insert one end of the wiring harness from one end of the tail end body 21 and pass it out from the inside of the waterproof cover 25, insert the wiring harness and one end of the elastic member 23 into one end of the tube body 11, and screw it into one end of the tube body 11 through the connecting thread 24 to connect. When the elastic member 23 approaches the locking port 12 inside the tube body 11, the caliber becomes smaller as the elastic member 23 gradually goes deeper, and the front end of the elastic member 23 begins to deform and lock. The waterproof cover 25 is pressed against the wiring harness through the elastic member 23, thereby tightening the wiring harness. At the same time, the gap between the elastic member 23 and the wiring harness is filled through the waterproof cover 25, thereby sealing the wiring harness and the tail end body 21.

[0045] In further embodiments, see Figure 3 , 5 A terminal block 14 is installed inside the tube body 11. The terminal block 14 is provided with a plurality of jacks 141. The jacks 141 can be connected to wires. A sealing ring 15 is provided between the terminal block 14 and the tube body 11. A plurality of pins 321 are provided inside the rotating cylinder 32. The pins 321 can be inserted into the jacks 141.

[0046] The wiring harness is connected to the terminal 14 , and the jack 141 and the pin 321 are correspondingly inserted to connect the terminal 14 to the pin 321 inside the rotating cylinder 32 , so that the female connector 1 is electrically connected to the male connector 3 .

[0047] In further embodiments, see Figures 3-4A retaining ring 13 is provided on the outside of the tube body 11, and the retaining ring 13 is located inside the locking nut 16. A sealing ring 161 is provided at one end of the locking nut 16. A plurality of slots 17 extending along the outside of the tube body 11 are provided at one end of the tube body 11. An annular step groove 171 is provided at one end of the tube body 11, and the step groove 171 is connected to one end of the slot 17. A plurality of insertion blocks 322 are provided inside the rotating cylinder 32, and the insertion blocks 322 can be inserted into the slot 17.

[0048] The tube body 11 is inserted into the rotating cylinder 32, and then the locking nut 16 is rotated and screwed on the outside of the rotating cylinder 32, so that the tube body 11 and the rotating cylinder 32 are not easily separated, thereby ensuring the stability of the connection. At the same time, after the locking nut 16 is tightened, the sealing ring 161 is tightly attached to the mounting plate 31, thereby further sealing the internal rotating cylinder 32 and the tube body 11.

[0049] During the insertion process, the step groove 171 is first inserted into the rotating cylinder 32. At this time, the tube body 11 is not easy to separate from the rotating cylinder 32 when squeezing the rotating cylinder 32. Then, the tube body 11 is rotated so that the slot 17 corresponds to the insertion block 322, so that the tube body 11 can be smoothly inserted into the rotating cylinder 32. After the insertion is partial, the locking nut 16 is rotated to continue to be inserted deeper. The retaining ring 13 makes it difficult for the locking nut 16 to detach from one end of the tube body 11, and it also plays a role in sealing the opening at the other end of the locking nut 16.

[0050] In further embodiments, see Figures 4-5 The slots 17 form a circle around one end of the tube body 11, and the spacing between the slots 17 is not equal.

[0051] Due to the unequal spacing between the slots 17 and the insertion blocks 322, each slot 17 can only be inserted into the corresponding insertion block 322, thereby ensuring that the female connector 1 and the male connector 3 can only be connected by one insertion method, thereby ensuring that the pin 321 can be inserted into the corresponding socket 141 without confusion.

[0052] In further embodiments, see Figures 6 to 9 The rotating cylinder 32 as a whole is composed of two sections of cylinders with different diameters. The rotating cylinder 32 is fixedly connected with a connecting ring 323 at the intersection of the diameters. A mounting ring 324 is installed on one side of the connecting ring 323 through a mounting bolt 3243. A ball 3241 is provided between one side of the mounting ring 324 and the connecting ring 323. A plurality of limit blocks 3242 are provided on the other side of the mounting ring 324. A protruding cylinder is provided on one side of the mounting plate 31. The connecting ring 323 and the mounting ring 324 are both located inside the cylinder. A sealing ring 311 is provided inside the cylinder on one side of the mounting ring 324.

[0053] The mounting ring 324 is driven to move inside the protruding cylinder of the mounting plate 31 by rotating the cylinder 32. Before connecting with the connecting female head 1, the mounting ring 324 is driven to move forward by rotating the cylinder 32. The limit block 3242 on the mounting ring 324 is away from the sealing ring 311, and the ball 3241 is close to the inside of the mounting plate 31, so that the rotating cylinder 32 is easy to rotate relative to the mounting plate 31, so that the rotating cylinder 32 can be rotated to adjust the insertion state of the connecting female head 1.

[0054] During the connection with the connecting female head 1, the rotating cylinder 32 is squeezed and moved backward by the connecting female head 1, so that the mounting ring 324 is moved backward, and one end of the limit block 3242 is pressed on the sealing ring three 311. Since the sealing ring three 311 is elastic, multiple limit blocks 3242 are pressed on the sealing ring three 311 to form multiple recesses, so that the limit block 3242 is difficult to rotate and move, that is, the mounting ring 324 and the rotating cylinder 32 are difficult to rotate and move, so that the insertion block 322 on the rotating cylinder 32 will not change position, thereby facilitating the insertion block 322 to be inserted into the corresponding slot 17.

[0055] In further embodiments, see Figure 1 , 5 The male connector 3 is mounted on the housing, the sealing ring 311 is located outside the housing, and a sealing gasket 33 is provided outside the protruding cylinder of the mounting plate 31.

[0056] A through hole is provided on the shell to install the male connector 3, so that the current can be poured into the electrical components inside the shell through the connector, and the mounting plate 31 and the shell are sealed by the sealing gasket 33 to block the through hole, and the protruding cylinder of the mounting plate 31 and the rotating cylinder 32 are sealed by the sealing ring 311.

[0057] In further embodiments, see Figures 10-11 A rotating head 325 is rotatably connected to one side of the rotating cylinder 32, and a plurality of conductive rings 3251 that do not contact each other are arranged on the outer side of the rotating head 325. A conductive member 1 3211 is fixedly connected to one end of the pin 321, and a conductive block 3212 is arranged on the conductive member 1 3211. The conductive blocks 3212 are respectively in contact with different conductive rings 3251, and a conductive member 2 3252 is fixedly connected inside the conductive ring 3251. A connecting cover 3254 is provided on one side of the rotating head 325, and a plurality of connecting pins 3255 are installed on the connecting cover 3254. The conductive member 2 3252 is inserted into the connecting pins 3255.

[0058] The conductive member 1 3211 is connected to the conductive member 1 3211 through the conductive block 3212, the conductive ring 3251 is connected to the connecting pin 3255 through the conductive member 2 3252, the connecting pin 3255 is connected to the electrical components inside the shell through wires, and the current is transmitted to the internal electrical components. When the rotating cylinder 32 rotates, the conductive member 1 3211 rotates with the rotating cylinder 32, and the conductive block 3212 rotates accordingly and always contacts the conductive ring 3251, so that the circuit can still be kept connected after the angle of the rotating cylinder 32 is adjusted.

[0059] In further embodiments, see Figures 12-13 A spring 3253 is fixedly connected inside the rotating head 325, one end of the spring 3253 is connected to the connection cover 3254, and a protective member 326 is provided on one side of the conductive member 3252 inside the rotating head 325, and the protective member 326 can lift up the connection cover 3254.

[0060] The connection cover 3254 is connected to the rotating head 325 through the spring 3253, thereby ensuring that the second conductive member 3252 is stably inserted into the connection pin 3255, so that the current is always connected.

[0061] The protective member 326 includes a piston rod and heat-conducting plates on both sides. A gas that expands when heated is passed into the piston rod. When the circuit is short-circuited and a large current is generated, the conductive member 3252 will generate a large amount of heat. The heat-conducting plates on both sides of the conductive member 3252 will transfer the heat to the piston rod. The gas inside the piston rod expands when heated, and the moving rod body of the piston rod rises to lift up the connecting cover 3254. The connecting cover 3254 thereby drives the connecting pin 3255 to separate from the conductive member 3252, thereby disconnecting the circuit.

[0062] In further embodiments, see Figure 1 , 3 ~4, an angle is formed between the bent end of the tube body 11 and the other end.

[0063] The angle formed by the tube body 11 avoids the need for bending of the wire harness in parallel with the shell to connect the female connector 1 with the male connector 3, thereby avoiding bending of the wire harness and protecting the performance and life of the wire harness.

[0064] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A waterproof seal for wiring harnesses for new energy vehicles, comprising a female connector (1) and a male connector (3), characterized in that: One end of the female connector (1) can be inserted into the male connector (3). The female connector (1) comprises a tube body (11). A locking nut (16) is arranged on the outside of the tube body (11). The male connector (3) comprises a mounting plate (31). A rotatable rotating cylinder (32) is arranged inside the mounting plate (31). The locking nut (16) can be screwed on the outside of the rotating cylinder (32). A rotatable rotating head (325) is arranged inside one end of the rotating cylinder (32). The rotating head (325) is electrically connected to the rotating cylinder (32).

2. A wiring harness waterproof seal for new energy vehicles according to claim 1, characterized in that: One end of the connecting female head (1) is connected to a locking tail end (2), the locking tail end (2) comprises a tail end body (21), the outer side of the tail end body (21) is fixedly connected to a hexagonal ring (22), one end of the tail end body (21) is provided with a plurality of slots to form an elastic member (23), the outer side of the tail end body (21) is provided with a connecting thread (24) between the hexagonal ring (22) and the elastic member (23), the elastic member (23) is provided with a waterproof sleeve (25), the tube body (11) is provided with a locking opening (12), and one end of the elastic member (23) is an oblique opening.

3. A wiring harness waterproof seal for new energy vehicles according to claim 1, characterized in that: A connection terminal (14) is installed inside the tube body (11), and a plurality of plug holes (141) are provided on the connection terminal (14), and the plug holes (141) can be connected to wires. A sealing ring (15) is provided between the connection terminal (14) and the tube body (11), and a plurality of plug pins (321) are provided inside the rotating cylinder (32), and the plug pins (321) can be inserted into the plug holes (141).

4. A wiring harness waterproof seal for new energy vehicles according to claim 1, characterized in that: The outer side of the tube body (11) is provided with a retaining ring (13), the retaining ring (13) is located inside the locking nut (16), one end of the locking nut (16) is provided with a sealing ring 2 (161), one end of the tube body (11) is provided with a plurality of slots (17) extending along the outer side of the tube body (11), one end of the tube body (11) is provided with an annular step groove (171), the step groove (171) is connected to one end of the slot (17), and a plurality of insertion blocks (322) are provided inside the rotating cylinder (32), and the insertion blocks (322) can be inserted into the slots (17).

5. A wiring harness waterproof seal for new energy vehicles according to claim 4, characterized in that: The slots (17) are arranged around one end of the tube body (11) to form a circle, and the spacing between the slots (17) is unequal.

6. A wiring harness waterproof seal for new energy vehicles according to claim 4, characterized in that: The rotating cylinder (32) as a whole is composed of two sections of cylinders with different diameters. A connecting ring (323) is fixedly connected to the rotating cylinder (32) at the intersection of the diameters. A mounting ring (324) is mounted on one side of the connecting ring (323) via a mounting bolt (3243). A ball bearing (3241) is provided between one side of the mounting ring (324) and the connecting ring (323). A plurality of limit blocks (3242) are provided on the other side of the mounting ring (324). A protruding cylinder is provided on one side of the mounting plate (31). Both the connecting ring (323) and the mounting ring (324) are located inside the cylinder. A sealing ring (311) is provided inside the cylinder on one side of the mounting ring (324).

7. A wiring harness waterproof seal for new energy vehicles according to claim 6, characterized in that: The male connector (3) is mounted on the housing, the sealing ring (311) is located outside the housing, and a sealing gasket (33) is provided outside the protruding cylinder of the mounting plate (31).

8. A wiring harness waterproof seal for new energy vehicles according to claim 3, characterized in that: A rotating head (325) is rotatably connected to one side of the rotating cylinder (32), a plurality of mutually non-contacting conductive rings (3251) are arranged on the outer side of the rotating head (325), one end of each plug pin (321) is fixedly connected to a conductive member 1 (3211), each conductive member 1 (3211) is provided with a conductive block (3212), the conductive blocks (3212) are respectively in contact with different conductive rings (3251), each conductive ring (3251) is fixedly connected with a conductive member 2 (3252), a connecting cover (3254) is arranged on one side of the rotating head (325), a plurality of connecting pins (3255) are mounted on the connecting cover (3254), and the conductive member 2 (3252) is inserted into the connecting pins (3255).

9. A wiring harness waterproof seal for new energy vehicles according to claim 8, characterized in that: A spring (3253) is fixedly connected inside the rotating head (325), one end of the spring (3253) is connected to the connection cover (3254), and a protective member (326) is provided on one side of the second conductive member (3252) inside the rotating head (325), and the protective member (326) can lift up the connection cover (3254).

10. A wiring harness waterproof seal for new energy vehicles according to claim 1, characterized in that: One bent end of the tube body (11) forms an angle with the other end.

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