Abstract
A screw connection system can screw together at least one reinforced long molded part that includes at least one pressure element and a connecting part. The pressure element has a pressure contour. The connecting part has a clamping fixture. The clamping fixture includes a first inner clamping wall and a second outer clamping wall, between which a groove is formed. The pressure element can be applied to the connecting part, whereby the second outer clamping wall of the clamping fixture can be deformed by the pressure contour. The second clamping wall may be deformed radially inwards by the pressure contour. The second clamping wall may be deformable in the direction of the first clamping wall. The second clamping wall may be deformed such that it comes into contact with the first clamping wall when no reinforcement of a long molded part is arranged in the clamping fixture.
Claims
1. A screw connection system comprising: a pressure element including a pressure contour; and a connecting part including a clamping fixture, wherein the clamping fixture includes a first inner clamping wall and a second outer clamping wall between which a groove is formed, wherein the pressure element is configured to be applied to the connecting part, and wherein the second outer clamping wall of the clamping fixture is configured to be deformed by the pressure contour.
2. The screw connection system according to claim 1, wherein the first inner clamping wall is arranged concentrically to the second outer clamping wall.
3. The screw connection system according to claim 1, wherein the first inner clamping wall, or the second outer clamping wall, or both the first inner clamping wall and the second outer clamping wall are at least partially cylindrical in shape or at least partially conical in shape or at least partially both cylindrical and conical in shape.
4. The screw connection system according to claim 1, wherein the pressure contour is configured to deform the second outer clamping wall in a direction of the first inner clamping wall.
5. The screw connection system according to claim 1, wherein the second outer clamping wall is thinner walled than the first inner clamping wall.
6. The screw connection system according to claim 1, wherein the first inner clamping wall has a wall thickness that is substantially the same as a wall thickness of the second outer clamping wall.
7. The screw connection system according to claim 1, wherein the first inner clamping wall, or the second outer clamping wall, or both the first inner clamping wall and the second outer clamping wall comprises at least one weakening zone, or at least one stiffening zone, or at least one weakening zone and at least one stiffening zone.
8. The screw connection system according to claim 1, wherein the first inner clamping wall projects beyond the second outer clamping wall at least in a longitudinal direction of the connecting part.
9. The screw connection system according to claim 1, wherein the first inner clamping wall has a chamfer.
10. The screw connection system according to claim 1, wherein the second outer clamping wall includes at least one radially extending viewing recess.
11. The screw connection system according to claim 1, wherein the first inner clamping wall, or the second outer clamping wall, or both the first inner clamping wall and the second outer clamping wall has at least one slot in a longitudinal direction of the connecting part.
12. A method of screwing together a long molded part with a reinforcement via a screw connection system according to claim 1, the method comprising: exposing the reinforcement of the long molded part; inserting the long molded part into the screw connection system; inserting the exposed reinforcement into a clamping fixture of a connecting part; and applying a pressure element of the screw connection system to the connecting part of the screw connection system, wherein the pressure contour of the pressure element deforms at least the second outer clamping wall of the clamping fixture so that the reinforcement of the long molded part is frictionally held between the first inner clamping wall of the clamping fixture and the second outer clamping wall.
13. The method according to claim 12 further comprising checking a penetration depth of the exposed reinforcement into the clamping fixture via at least one viewing recess.
14. The method according to claim 12 further comprising tightening the pressure element on the connecting part with a predefined torque to ensure a frictional hold between the clamping fixture and the reinforcement of the long molded part.
15. The method according to claim 12 further comprising screwing the pressure element onto the connecting part until the pressure element is against a stop of the connecting part.
Description
DRAWINGS
[0068] In order that the disclosure may be well understood, there will now be described various forms thereof, given by way of example, reference being made to the accompanying drawings, in which:
[0069] FIG. 1 is a side view of a screw connection system of a first configuration in accordance with the teachings of the present disclosure;
[0070] FIG. 2 is a top view of the screw connection system of FIG. 1;
[0071] FIG. 3 is a cross-sectional view of the screw connection system of FIG. 1, taken along line III-III shown in FIG. 2, illustrating a clamping fixture in an undeformed state;
[0072] FIG. 4 is a cross-sectional view similar to FIG. 3, illustrating the clamping fixture in a deformed state;
[0073] FIG. 5 is an exploded view of a screw connection system of a second configuration in accordance with the teachings of the present disclosure;
[0074] FIG. 6 is a cross-sectional view of the screw connection system of FIG. 5; and
[0075] FIG. 7 is a cross-sectional view of the portion of the screw connection system of FIG. 5 indicated by circle VII shown in FIG. 6.
[0076] The drawings described herein are for illustration purposes only and are not intended to limit the scope of the present disclosure in any way.
DETAILED DESCRIPTION
[0077] The following description is merely exemplary in nature and is not intended to limit the present disclosure, application, or uses. It should be understood that throughout the drawings, corresponding reference numerals indicate like or corresponding parts and features.
[0078] FIG. 1 shows a first configuration of a screw connection system 10 according to the teachings of the present disclosure. A pressure element 20 and a connecting part 40 can be seen in the side view. The pressure element 20 is screwed onto a pressure element receptacle 44 of the connecting part 40 on the head side K. On the foot side F, the connecting part 40 has a connecting means 42, with which the connecting part 40 can be screwed to a connection geometry that is not shown.
[0079] FIG. 2 shows a top view of the configuration of FIG. 1. The pressure element 20 has key contact surfaces 22, which are designed for contact, such as by a wrench, in order to screw the pressure element 20 onto the connecting part 40.
[0080] FIG. 3 shows a sectional view, taken along line III-III from FIG. 2, with an undeformed clamping fixture 46. The pressure element 20 has an exit opening 26 which opens into the receiving recess 28. A long molded part, which is not shown, can be guided through the receiving recess 28. The receiving recess 28 has a recess inner surface 30 adjacent a head side surface 32 of the pressure element 20 and a foot side surface 33 of the pressure element 20. The recess inner surface 30 has a pressure contour 24 and an internal thread 21. The internal thread 21 is threaded onto the pressure element receptacle 44 of the connecting part 40. The connecting part 40 has a stop 56. The stop 56 has an upper stop face 55 and a lower stop face 57. The connecting part 40 has the connecting means 42, which is arranged below a stop 56. The connecting means 42 can be an external thread. The stop 56 is provided for limiting the screw-in depth of the connecting part 40 in a connection geometry, not shown. In another example, not specifically shown, the stop 56 can also be configured to limit the screwing on of the pressure element 20. In the configuration shown in FIG. 3, a screw-on depth of the pressure element 20 is limited by a clamping fixture 46, as can also be seen in FIG. 4. The clamping fixture 46 has a first, inner clamping wall 48 and a second, outer clamping wall 50. The inner clamping wall 48 and the outer clamping wall 50 are integrally connected to the remainder of the connecting part 40. A groove 52 is formed between the first, inner clamping wall 48 and the second, outer clamping wall 50, into which a reinforcement, not shown, of the long molded part, which is also not shown, and can in particular be designed as a reinforced cable, can be inserted. The groove 52 is an annular groove, with substantially annular and concentric clamping walls 48 and 50 forming the groove 52 in the space between them. At its deepest point, the groove 52 has a groove bottom, not further specified, arranged between the first and second clamping walls. The inner clamping wall 48 and the outer clamping wall 50 are materially connected via the groove base. The groove base is formed from the material of the connecting part 40. The reinforcement is inserted up to the groove base in order to obtain improved clamping. The first, inner clamping wall 48 protrudes at the head end over the second, outer clamping wall 50. This facilitates insertion of the reinforcement. Furthermore, the first, inner clamping wall 48 has a conical surface 49 or chamfer, which also facilitates the insertion of the reinforcement. As explained above, the clamping walls 48, 50 can be of different shapes, for example cylindrically or conically shaped or having weakening areas and/or stiffening areas.
[0081] FIG. 4 shows a cross-sectional view similar to FIG. 3, except with the clamping fixture 46 illustrated in a deformed state. In particular, the second, outer clamping wall 50 is deformed radially inward by the pressure contour 24 of the pressure element 20. Since no reinforcement is arranged in the groove 52 shown in FIG. 4 and the pressure element is screwed onto the pressure element receptacle 44 to a maximum, the second, outer clamping wall 50 nestles against the first, inner clamping wall 48, though it is understood that reinforcement, not shown, would be positioned therebetween when screwed thereon for operation. As shown in FIG. 4, the pressure element 20 is limited in screw-on depth by the clamping walls 48, 50. In particular, the first, inner clamping wall 48 is substantially not deformable by the pressure element 20. Consequently, the pressure element 20 cannot be screwed onto the connecting part 40 up to the stop 56 or up to the upper stop face 55. In a configuration not shown, which is explained in detail above, the pressure element 20 can be screwed onto the pressure element receptacle 44 to such an extent that the foot-side surface 33 of the pressure element 20, which is designated in FIG. 3, rests on the upper stop face 55.
[0082] FIG. 5 shows an exploded view of a second configuration of a screw connection system 10. The screw connection systems 10 of FIGS. 1-4 and 5-7 can be similar except as otherwise shown or described herein. Thus, similar features are indicated with similar reference numerals and only differences are described in detail herein. The screw connection system 10 has the pressure element 20 and the connecting part 40, which can be screwed onto a double nipple 60. A first sealing insert 62 is arranged between the connecting part 40 and the double nipple 60. A union nut 64 can be screwed onto the pressure element 20, with a second sealing insert 66 being arranged between the union nut 64 and the pressure element 20.
[0083] FIG. 6 shows a sectional view through the screw connection system according to FIG. 5 in the assembled state. The receiving recess 28 of the pressure element 20 is aligned with the recesses of the connecting part 40, which are not further designated, as well as the union nut 64, the nipple 60 and the sealing inserts 62, 66 in the direction of a longitudinal axis 58 of the screw connection system 10.
[0084] FIG. 7 shows a portion of the screw connection system 10 indicated by circle VII shown in FIG. 6. As shown in FIG. 7, the pressure element 20 is screwed onto the connecting part 40 to such an extent that the second, outer clamping wall 50 is formed radially in the direction of the first, inner clamping wall 48. A reinforcement of a long molded part, not shown, would be clamped in the groove 52 between the clamping walls 48, 50. During assembly of the reinforcement in the clamping fixture 46, in particular during a control disassembly of the screw connection system 10, it can be checked via the viewing recesses 54 whether the reinforcement is arranged sufficiently deep in the groove 52. As explained above, viewing recesses may also be provided in other configurations of the screw connection system 10, such as that shown in FIGS. 1-4.
[0085] With the disclosed screw connection system, reinforced long molded parts can be screwed together with little assembly effort. In addition, fewer individual parts are required than in the state of the art, which avoids loss or incorrect assembly.
[0086] Unless otherwise expressly indicated herein, all numerical values indicating mechanical/thermal properties, compositional percentages, dimensions and/or tolerances, or other characteristics are to be understood as modified by the word “about” or “approximately” in describing the scope of the present disclosure. This modification is desired for various reasons including industrial practice, material, manufacturing, and assembly tolerances, and testing capability.
[0087] As used herein, the phrase at least one of A, B, and C should be construed to mean a logical (A OR B OR C), using a non-exclusive logical OR, and should not be construed to mean “at least one of A, at least one of B, and at least one of C.”
[0088] The description of the disclosure is merely exemplary in nature and, thus, variations that do not depart from the substance of the disclosure are intended to be within the scope of the disclosure. Such variations are not to be regarded as a departure from the spirit and scope of the disclosure.
