DE102020120838A1 - Clamping screw with improved insulating distance - Google Patents

Abstract

According to one aspect, a multi-component clamping screw (100) with a metallic shaft (102) and a head (104) made of plastic is described. The shaft (102) has a thread (108) at a first end (106) of the clamping screw (100). The head (104) made of plastic is positively connected to the shaft (102) at a second end (112) of the clamping screw (100) opposite the first end (106) in the axial direction (110), at least in the axial direction (110). In a variant, the head (104) has a screw entrainment profile (114) exposed at the second end (112), which is supported in a plane (120) transverse to the axial direction (110) on a screw entrainment profile (116) of the shaft (102) . In another variant, the shaft (102) at the second end (112) has a screw entrainment profile (116) which is exposed through an opening (126) in the head (104) at the second end (112) in the axial direction (110).

Description

The present disclosure relates to a technique for extending insulation distances. In particular, a clamping screw with an improved insulating distance is disclosed.

The installation height of modules that carry an electrical voltage, for example installations in distribution systems or overvoltage protection modules, has increased in recent years. In previous years, an installation height of, for example, 2,000 meters was a typical requirement or standard. The installation height can now range from 4,000 meters to sometimes 5,000 meters. This increases the clearance and creepage distances to be maintained, which are collectively referred to here as insulating distances. For example, the air pressure p falls with the installation height, whereby, according to Paschen's law, V = V (p · d), the breakdown length d in air at a given voltage V, e.g. B. mains voltage, extended. This means that the necessary insulating distance to a live component such. B. a current bar or a screw, is many times longer.

However, in existing modules, the distance from a live screw, by means of which, for example, a clamping pocket or a conductor is tightened, to a touchable surface is barely or even insufficiently long compared to the physical breakdown length. This is due, for example, to the fact that the standard for small distributors specifies the dimensions of basic elements, but the dimensions do not have to be changed with increasing installation height and must be adhered to by the installer.

In order to prevent direct contact with live screws, insulating caps are known in the prior art which have a hexagonal profile on the outside. However, such caps have to be put on and can easily be lost. Furthermore, the torque that can be transmitted via such a cap for tightening or loosening a screw covered by it is limited by the torsion of the cap.

The invention is therefore based on the object of specifying a technique for extending insulating distances that does not result in any increase in the installation space and / or no additional assembly steps. A more specific or different task is to specify a clamping screw for extending an insulating section, which can be assembled and disassembled without additional loose parts and / or without additional assembly steps.

The task or tasks are solved with the features of each independent claim. Appropriate configurations and advantageous developments of the invention are specified in the dependent claims.

In the following, exemplary embodiments are described with partial reference to the figures.

According to a first aspect of the invention, a multi-component clamping screw is provided. The multi-component clamping screw comprises a metallic shaft and a head made of plastic. The shaft has a thread at a first end of the clamping screw. The head made of plastic is positively connected to the shaft at a second end of the clamping screw opposite the first end in the axial direction, at least in the axial direction.

The head has an exposed screw entrainment profile at the second end, which is supported in a plane transverse to the axial direction on a screw entrainment profile of the shaft. Alternatively or in addition, the shaft at the second end has a screw entrainment profile which is exposed in the axial direction through an opening in the head at the second end.

Embodiments of the multi-component clamping screw can connect the head and the shaft to one another in a rotationally fixed manner by transmitting a torque of the head to the shaft in the plane transverse to the axial direction. As the torque is transmitted through the screw-entrainment profile of the head to the clamping screw (for example by a screwdriver) and this torque is further transmitted in the plane to the screw-entrainment profile of the shaft, the plastic of the head cannot be subjected to shear or torsion or is significantly less stressed than with conventional multi-component screws in which the screw entrainment profile of the head is axially spaced from a plane in which the shaft and head are connected non-rotatably (for example, positively).

The same or further exemplary embodiments of the clamping screw can make it possible for no mechanical shear stress to act within the plastic head during rotation or torsion of the clamping screw by means of the screw entrainment profile on the head.

Preferably there is at least the plane transverse to the axial direction in which both the Screw entrainment profile of the shaft as well as the screw entrainment profile of the head. In other words, the plane intersects both the screw entrainment profile of the shaft and the screw entrainment profile of the head. That is, the screw entrainment profile of the head and the screw entrainment profile of the shaft overlap in the axial direction.

The head made of plastic can be positively connected to the shaft at the second end of the clamping screw with respect to a tensile force in the axial direction.

The plane can be perpendicular to the axial direction.

The screw entrainment profile of the head can be supported on the screw entrainment profile of the shaft with respect to a rotation of the head about the axial direction or a torque in the axial direction. The screw entrainment profile and the shaft profile can interlock in a rotationally fixed manner.

The opening can be a circular opening. The opening and / or the screw entrainment profile of the shaft can be coaxial with the shaft.

The clamping screw can be designed to clamp a stressed component. The metallic shaft can be electrically conductive.

The threaded shaft can be called a screw. The head or the second end can be referred to as the screw head of the screw.

The screw entrainment profile of the head can be supported on the screw entrainment profile of the shaft in that the screw entrainment profile of the head is at least partially embedded in the screw entrainment profile of the shaft and / or the screw entrainment profile of the head is in engagement with the screw entrainment profile of the shaft.

Both sections of the screw entrainment profile of the shaft and sections of the screw entrainment profile of the head can be in the plane.

The screw entrainment profile of the shaft, on which the screw entrainment profile of the head is supported, can be covered by the head (preferably simply connected).

The plane in which the screw entrainment profile of the head is supported on the screw entrainment profile of the shaft can be within a profile depth (in the axial direction) of the screw entrainment profile of the head from the second end.

A diameter of the opening transversely to the axial direction can be smaller than a diameter of the head transversely to the axial direction and / or than a diameter of the shaft transversely to the axial direction.

The head can be closed all around the opening. The diameter of the opening can correspond to a diameter of the screw entrainment profile of the shaft.

The shaft can furthermore comprise an additional shaft profile. The head can comprise an additional head profile that is complementary to the additional shaft profile. Due to the additional shaft profiles, the head and the shaft can also be positively connected to one another with respect to rotation.

Both sections of the additional head profile and sections of the additional shaft profile can be in the plane.

The head can be produced by overmolding the screw entrainment profile of the shaft and optionally the additional shaft profile.

The screw entrainment profile of the head can have at least one screw entrainment surface parallel to the axial direction, which is supported in the plane for transmitting a torque from the screw entrainment face of the head to the shaft on a screw entrainment face of the screw entrainment profile of the shaft that is parallel to the screw entrainment face of the head.

The shaft can comprise a sleeve at the first end. The sleeve can comprise the thread on the first end of the shaft as an internal thread. As an alternative or in addition, the thread on the first end of the shaft can be an external thread. The first end of the shaft can furthermore comprise a pressure piece. A diameter of the pressure piece can be smaller than a diameter of the thread.

The screw entrainment profile of the shaft can correspond geometrically to the screw entrainment profile of the head or be geometrically similar. For example, the screw entrainment profile of the shaft can be scaled larger in relation to the screw entrainment profile of the head in the plane. A longitudinal axis of the shaft can correspond to a fixed point or a center of the scaling.

The thread can comprise an external thread at the first end of the shaft. The first end of the shaft can furthermore comprise a pressure piece. A diameter of the pressure piece can be smaller than a diameter of the thread.

The head made of plastic can be closed at the second end of the clamping screw.

The second end of the clamping screw can be electrically isolated from the shaft by means of the head. The head can form a single, connected and electrically insulated surface at the second end of the clamping screw.

According to a further aspect, a component which is subjected to tension or which can be subject to tension is provided. The component can comprise a screw connection with a clamping sleeve. The component can comprise at least one multi-component clamping screw according to the first aspect.

The further aspect can furthermore comprise any feature disclosed in the context of the first aspect, and vice versa.

The invention is explained in more detail below with reference to the attached drawings using preferred embodiments.

• 1 schematisch eine perspektivische Ansicht einer mehrkomponentigen Klemmschraube gemäß einem ersten Ausführungsbeispiel;
• 2 eine schematische Teilschnittdarstellung der Klemmschraube gemäß dem ersten Ausführungsbeispiel;
• 3A eine schematische Rückansicht der Klemmschraube in axialer Richtung gemäß dem ersten Ausführungsbeispiel;
• 3B eine schematische Seitenansicht der Klemmschraube parallel der axialen Richtung gemäß dem ersten Ausführungsbeispiel;
• 3C eine schematische Vorderansicht der Klemmschraube in axialer Richtung gemäß dem ersten Ausführungsbeispiel;
• 3D eine schematische Vorderansicht des Schafts der Klemmschraube in axialer Richtung gemäß dem ersten Ausführungsbeispiel;
• 4 schematisch eine perspektivische Ansicht einer mehrkomponentigen Klemmschraube gemäß einem zweiten Ausführungsbeispiel;
• 5A eine schematische Rückansicht der Klemmschraube in axialer Richtung gemäß dem zweiten Ausführungsbeispiel;
• 5B eine schematische Seitenansicht der Klemmschraube parallel der axialen Richtung gemäß dem zweiten Ausführungsbeispiel;
• 5C eine schematische Vorderansicht der Klemmschraube in axialer Richtung gemäß dem zweiten Ausführungsbeispiel;
• 5D eine schematische Vorderansicht des Schafts der Klemmschraube in axialer Richtung gemäß dem zweiten Ausführungsbeispiel;
• 6 schematisch eine perspektivische Ansicht einer mehrkomponentigen Klemmschraube gemäß einem dritten Ausführungsbeispiel;
• 7 eine schematische Teilschnittdarstellung der Klemmschraube gemäß dem dritten Ausführungsbeispiel;
• 8A eine schematische Rückansicht der Klemmschraube in axialer Richtung gemäß dem dritten Ausführungsbeispiel;
• 8B eine schematische Seitenansicht der Klemmschraube parallel der axialen Richtung gemäß dem dritten Ausführungsbeispiel;
• 8C eine schematische Vorderansicht der Klemmschraube in axialer Richtung gemäß dem dritten Ausführungsbeispiel;
• 8D eine schematische Vorderansicht des Schafts der Klemmschraube in axialer Richtung gemäß dem dritten Ausführungsbeispiel;
• 9 eine schematische Teilschnittdarstellung eines ersten Ausführungsbeispiels eines Moduls mit einer Klemmhülse; und 10 eine schematische Teilschnittdarstellung eines zweiten Ausführungsbeispiels eines Moduls mit einer Klemmhülse.

Show it:

• 1 schematically a perspective view of a multi-component clamping screw according to a first embodiment;
• 2 a schematic partial sectional view of the clamping screw according to the first embodiment;
• 3A a schematic rear view of the clamping screw in the axial direction according to the first embodiment;
• 3B a schematic side view of the clamping screw parallel to the axial direction according to the first embodiment;
• 3C a schematic front view of the clamping screw in the axial direction according to the first embodiment;
• 3D a schematic front view of the shaft of the clamping screw in the axial direction according to the first embodiment;
• 4th schematically a perspective view of a multi-component clamping screw according to a second embodiment;
• 5A a schematic rear view of the clamping screw in the axial direction according to the second embodiment;
• 5B a schematic side view of the clamping screw parallel to the axial direction according to the second embodiment;
• 5C a schematic front view of the clamping screw in the axial direction according to the second embodiment;
• 5D a schematic front view of the shaft of the clamping screw in the axial direction according to the second embodiment;
• 6th schematically a perspective view of a multi-component clamping screw according to a third embodiment;
• 7th a schematic partial sectional view of the clamping screw according to the third embodiment;
• 8A a schematic rear view of the clamping screw in the axial direction according to the third embodiment;
• 8B a schematic side view of the clamping screw parallel to the axial direction according to the third embodiment;
• 8C a schematic front view of the clamping screw in the axial direction according to the third embodiment;
• 8D a schematic front view of the shaft of the clamping screw in the axial direction according to the third embodiment;
• 9 a schematic partial sectional view of a first embodiment of a module with a clamping sleeve; and 10 a schematic partial sectional view of a second embodiment of a module with a clamping sleeve.

1 FIG. 11 shows schematically a perspective view of a first exemplary embodiment with a general reference number 100 designated multi-component clamping screw.

The multi-component clamping screw 100 comprises a metallic shaft 102 (for example made of a metallic alloy) and an electrically insulating (ie non-electrically conductive) head 104 (for example from one or more plastics). The shaft 102 points at a first end 106 the clamping screw 100 a thread 108 on. The head 104 is at one of the first ends 106 in the axial direction 110 opposite second end 112 the clamping screw 100 at least in the axial direction 110 form-fitting with the shaft 102 connected.

In a first alternative (for example according to the first and the following second exemplary embodiment) the head 104 one at the second end 112 exposed screw carrier profile 114 on. The screw entrainment profile 114 is based on at least one level 120 transverse to the axial direction 110 (preferably directly, only through Surface pressure and / or with lines of force in or parallel to the plane 120 ) on a screw guide profile 116 of the shaft 102 from.

In a second alternative (for example in accordance with the third exemplary embodiment below) or in addition to the first alternative, the shaft 102 at the second end 112 a screw guide profile 116 on. The screw entrainment profile 116 lies through an opening 126 of the head 104 at the second end 112 in the axial direction 110 free.

Both alternatives can create a torque at the second end in each case or in combination 112 on the clamping screw 100 act directly on the metallic shaft 102 is transmitted. In the first alternative, a part of the head made of plastic can only be subjected to pressure and / or (at least essentially) not to shear. In the second alternative, the torque can be transmitted directly to the shaft through the opening.

Furthermore, embodiments of the clamping screw can solve the recurring problem of contact safety with electrically conductive components by adding the second end 112 at least circumferentially to the axial direction 110 or closed at the second end 112 is isolated.

2 shows schematically a partial sectional view of the clamping screw 100 according to the first embodiment. The head 104 is at the second end 112 the clamping screw 100 at least in the axial direction 110 form-fitting with the shaft 102 connected due to an undercut. For example, in the 2 shown, the shaft tapers 102 radial at the second end 112 in the axial direction 110 towards the first end 106 .

In the partial sectional view of the clamping screw 100 of the 2 is the head 104 cut parallel to the longitudinal axis of the shaft during the shaft 102 is shown in a corresponding side view.

In the first embodiment, the head is 104 at the second end 112 closed. That the shaft 102 at the second end 112 surrounding screw guide profile 114 of the head 104 is supported directly on the screw guide profile 116 of the shaft 102 off, for example on the screw entrainment surface 124 .

3A shows a schematic rear view of the clamping screw 100 in the axial direction 110 according to the first embodiment. 3B shows a schematic side view of the clamping screw 100 parallel to the axial direction 110 according to the first embodiment. 3C shows a schematic front view of the clamping screw 100 in the axial direction 110 according to the first embodiment. 3D shows a schematic front view of the shaft 102 in the axial direction 110 according to the first exemplary embodiment.

The shaft 102 has at the second end 112 the screw entrainment profile on its face 116 . Optionally, the shaft 102 at the second end 112 an additional shaft profile on its outside 117 as a toothing.

At the in 3D shown end face of the shaft 102 , ie, the inner area at the second end of the shaft 102 , is the screw entrainment profile 116 of the shaft 102 . The screw entrainment profile 116 of the shaft 102 also includes a (preferably circumferential) toothing and a universal contour (preferably a diagonal groove), with which it is possible to drive different drives of the screw 100 to realize, for example, different drive forms such as longitudinal slot, external hexagon, internal hexagon and / or cross slot as a screw entrainment profile 114 of the head 104 and / or as a screw guide profile 116 of the shaft 102 .

At least one screw entrainment surface 122 of the screw guide profile 114 of the head 104 is supported in the direction of rotation around the axial direction 110 in one plane 120 perpendicular to the axial direction 110 on at least one screw carrying surface 124 of the screw guide profile 116 of the shaft 102 . By putting the torque in the plane 120 is transmitted are shear forces in the head 104 avoided or minimized.

The head 104 (for example the insulating cap) has the same or scaled screw entrainment profile 114 (for example the same or scaled contour) as the screw-carrying profile 116 (like the contour) of the shaft 102 on. This means that the drive can transmit power directly to the shaft 102 be transmitted.

At the second end 112 is on the shaft 102 the head 104 tensile strength (for example by a latching or an undercut of the head 104 ) and non-rotatable (e.g. due to the interlocking screw guide profiles 114 and 116 and / or the interlocking additional profiles 115 and 117 ) arranged. The head 104 can be an insulating cap. The head 104 can end at the second 112 on the shaft 102 be attached or overmolded.

By having the head 104 (for example the cap) the second end 112 of the metallic shaft 102 encloses, the head achieves 104 first the increase in the air and creepage distances (ie the insulating distances) and, secondly, the protection against accidental contact.

4th shows schematically a perspective view of a multi-component clamping screw 100 according to a second embodiment. The second embodiment differs in a variant of the screw entrainment profile 114 of the head 104 from the first embodiment.

For example, the screw entrainment profile includes 114 of the head 104 an Allen key (also called "Torx").

5A shows a schematic rear view of the clamping screw 100 in the axial direction 110 according to the second embodiment. 5B shows a schematic side view of the clamping screw 100 parallel to the axial direction 110 according to the second embodiment. 5C shows a schematic front view of the clamping screw 100 in the axial direction according to the second embodiment. 5D shows a schematic front view of the shaft 102 in the axial direction according to the second embodiment.

The hexalobular socket of the screw guide profile 114 of the head 104 can be circumferentially on a corresponding (for example, scaled radially larger) hexalobular socket of the screw entrainment profile 116 of the shaft 102 prop up.

As in 5D shown, the screw entrainment profile 114 of the head 104 a longitudinal slot (preferably with diagonal surfaces 122 , for example according to the first embodiment) combine with the hexalobular socket. The screw entrainment profile 116 of the shaft 102 can use a diagonal groove to support the longitudinal slot (preferably with flat 124 , for example according to the first embodiment).

The screw entrainment profile 116 of the shaft 102 can be universal by using the same screw entrainment profile 116 of the shaft 102 for the production of clamping screws 100 is used according to the first embodiment and the second embodiment.

6th shows schematically a perspective view of a multi-component clamping screw 100 according to a third embodiment. 7th shows a schematic partial sectional view of the clamping screw 100 according to the third embodiment.

The third embodiment uses a second approach in which the head (for example the insulating cap) has a through opening 126 has, through which the drive (for example a screwdriver) is plugged or pluggable and directly with the screw entrainment profile 116 of the shaft 102 cooperates. This enables the torque to be transmitted directly and the protection against accidental contact is improved.

8A shows a schematic rear view of the clamping screw 100 in the axial direction 110 according to the third embodiment. 8B shows a schematic side view of the clamping screw 100 parallel to the axial direction 110 according to the third embodiment. 8C shows a schematic front view of the clamping screw 100 in the axial direction 110 according to the third embodiment.

Individual features of the three exemplary embodiments described above can be combined and / or exchanged. For example, a feature provided with the same reference number for a variant of an exemplary embodiment can be exchanged for the identical feature of another exemplary embodiment.

9 shows a schematic partial sectional illustration of a first exemplary embodiment of a module 900 with a clamping sleeve, which is an embodiment of the clamping screw 100 includes. The clamping screw 100 is in a screw shaft of the module 900 built-in. A schematically indicated test finger 902 is used to determine the insulation distance (for example the air distance).

The screw shaft was made conventional by means of a cover 904 or a plug closed. However, this has the disadvantage that the plumber has to remove the plug or cover before tightening the screw 904 remove or open and then insert or close.

To (for example, without the lid 904 ) To be able to maintain the clearances and creepage distances for installation heights greater than 2,000 meters, as well as to ensure contact safety, can be an embodiment of the clamping screw 100 can be used.

Because of the insulating head 104 can be the beginning of the isolation section 906 under the edge of the head 104 be shifted and thus be extended, for example in comparison to a conventional isolation path 906 ' that begins at the face of a metal screw head.

The clamping screw 100 can be a leader 908 clamp in the clamping sleeve, for example a conductor of a connection line of the module 900 . The module can be an overvoltage protection module.

Embodiments of the clamping screw 100 can combine the insulation properties of a plastic screw with the tightening torque of a purely metallic screw. Conventional screws, which are made exclusively from a plastic, have the disadvantage that these plastic screws cannot transmit the required tightening torques. By the torque (for example from the screw entrainment profile 114 of the head 104 ) directly and / or without shearing onto the metallic shaft 102 is transmitted, the required tightening torque can be achieved without sacrificing the insulation properties.

10 shows a schematic partial sectional illustration of a second exemplary embodiment of a module 900 with a clamping sleeve, which is an embodiment of the clamping screw 100 includes.

In the in 10 The installation situation shown, the need to increase the insulating distance is even more urgent, since the conventional screw head is even closer to a mounting opening of the screw shaft than in the first embodiment of the module due to a busbar fastened by means of the screw 900 of the 9 . The necessary extension of the isolation path can be achieved by using an exemplary embodiment of the clamping screw 100 be available.

Although the invention has been described with reference to exemplary embodiments, those skilled in the art will recognize that various changes can be made and equivalents used as replacements. Furthermore, many modifications can be made to adapt a particular application of the clamping screw or a particular material to the teachings of the invention. Consequently, the invention is not limited to the disclosed exemplary embodiments, but rather encompasses all exemplary embodiments that fall within the scope of the appended claims.

List of reference symbols

100

Clamping screw

102

shaft

104

head

106

First end

108

Thread, preferably external thread

110

Axial direction

112

Second ending

114

Screw entrainment profile of the head

115

Additional head profile

116

Screw entrainment profile of the shaft

117

Additional shaft profile

118

Tread depth

120

Plane transverse to the axial direction

122

Screw carrying surface of the screw carrying profile of the head

124

Screw carrying surface of the screw carrying profile of the shaft

126

Opening in the head

900

Module with clamping sleeve, preferably overvoltage protection module

902

Test finger

904

flap

906

Isolation distance

906 '

Conventional isolation distance

908

Connecting cable

Claims (14)

Multi-component clamping screw (100) comprising: - a metallic shaft (102); and - a head (104) made of plastic, the shaft (102) having a thread (108) at a first end (106) of the clamping screw (100) and the head (104) made of plastic at one of the first end (106) in the axial direction (110) opposite second end (112) of the clamping screw (100) is positively connected to the shaft (102) at least in the axial direction (110), characterized in that - the head (104) has a second end ( 112) has exposed screw entrainment profile (114) which is supported in a plane (120) transverse to the axial direction (110) on a screw entrainment profile (116) of the shaft (102); and / or - the shaft (102) at the second end (112) has a screw entrainment profile (116) which is exposed through an opening (126) of the head (104) at the second end (112) in the axial direction (110). Clamping screw (100) Claim 1 , wherein the screw entrainment profile (114) of the head (104) is supported on the screw entrainment profile (116) of the shaft (102) in that the screw entrainment profile (114) of the head (104) is at least partially embedded in the screw entrainment profile (116) of the shaft (102) and / or the screw entrainment profile (114) of the head (104) engages with the screw entrainment profile (116) of the shaft (102). Clamping screw (100) Claim 1 or 2 wherein in the plane (120) both sections of the screw entrainment profile (116) of the shaft (102) as well as portions of the screw entrainment profile (114) of the head (104). Clamping screw (100) according to one of the Claims 1 to 3 wherein the screw entrainment profile (116) of the shaft (102), on which the screw entrainment profile (114) of the head (104) is supported, is covered by the head (104). Clamping screw (100) according to one of the Claims 1 to 4th , wherein the plane (120) in which the screw entrainment profile (114) of the head (104) is supported on the screw entrainment profile (116) of the shaft (102), within a profile depth (118) of the screw entrainment profile (114) of the head (104) from second end (112). Clamping screw (100) according to one of the Claims 1 to 5 , wherein a diameter of the opening (126) transversely to the axial direction (110) is smaller than a diameter of the head (104) transversely to the axial direction (110) and / or than a diameter of the shaft (102) transversely to the axial direction (110 ). Clamping screw (100) according to one of the Claims 1 to 6th , wherein the shaft (102) further comprises an additional shaft profile (117) and the head (104) comprises an additional head profile (115) complementary to the additional shaft profile (117), through which the head (104) and the shaft (102) relate to Rotation are also positively connected to each other. Clamping screw (100) Claim 7 wherein both sections of the additional head profile (115) and sections of the additional shaft profile (117) are in the plane (120). Clamping screw (100) according to one of the Claims 1 to 8th wherein the head (104) is produced by overmolding the screw entrainment profile (116) of the shaft (102), and optionally the additional shaft profile (117). Clamping screw (100) according to one of the Claims 1 to 9 wherein the screw entrainment profile (114) of the head (104) has at least one screw entrainment surface (122) which is parallel to the axial direction (110) and which extends in the plane (120) for transmitting a torque from the screw entrainment surface (122) of the head (104) on the shaft (102) on a screw-entrainment face (124) of the screw entrainment profile (116) of the shaft (102) parallel to the screw entrainment face (122) of the head (104). Clamping screw (100) according to one of the Claims 1 to 10 wherein the screw entrainment profile (116) of the shaft (102) corresponds geometrically to the screw entrainment profile (114) of the head (104) or is geometrically similar, preferably being scaled larger. Clamping screw (100) according to one of the Claims 1 to 11 , wherein the thread (108) at the first end (106) of the shaft (102) is an external thread and the first end (106) of the shaft (102) further comprises a pressure piece (128), the diameter of which is smaller than a diameter of the thread ( 108) is. Clamping screw (100) according to one of the Claims 1 to 12th wherein the plastic head (102) is closed at the second end of the clamping screw. A component (900) subjected to or subject to tension, preferably a screw connection with a clamping sleeve, the component (900) having at least one multi-component clamping screw (100) according to one of the Claims 1 to 13th includes.

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