Cable screw-connection system
A cable gland system for arrangement on a housing wall includes: a guide element with an opening for receiving a cable, a first support surface for supporting on a first side of the housing wall and a first end region, and an opposite second end region, at least one external thread being arranged at least on a periphery of the first end region; and a fastening element with a second support surface for supporting on a second side of the housing wall, and an internal thread on an inner surface, the internal thread engaging with the external thread on the guide element in a screwed-on state. At least one contact surface with a contact structure respectively arranged on the periphery of the guide element, adjacent to the external thread and to the inner surface of the fastening element.
1. A cable gland system for arrangement on a housing wall, comprising:
a guide element with an opening configured to receive a cable, a first support surface configured to support on a first side of the housing wall and a first end region, and an opposite second end region, at least one external thread being arranged at least on a periphery of the first end region; and
a fastening element with a second support surface configured to support on a second side of the housing wall, and an internal thread on an inner surface, the internal thread being configured to engage with the external thread on the guide element in a screwed-on state,
wherein at least one contact surface with a contact structure is respectively arranged on the periphery of the guide element, adjacent to the external thread, and on the inner surface of the fastening element,
wherein the contact surfaces are configured to be in mechanical contact with one another in the screwed-on state,
wherein the contact surfaces have knurlings as a contact structure, and
wherein the knurlings comprise a pattern of grooves that run parallel to one another.
2. The cable gland system of claim 1 , wherein the internal thread comprises a first individual thread turn or at least partial regions of a first individual thread turn.
3. The cable gland system of claim 2 , wherein the internal thread comprises at least two radially opposite partial regions of the first individual thread turn, separated by an interruption in the first individual thread turn.
4. The cable gland system of claim 2 , wherein the internal thread comprises a plurality of partial regions of the first thread turn which are of equal length or of different lengths, separated by interruptions in the first thread turn.
5. The cable gland system of claim 2 , wherein the internal thread comprises a second individual thread turn or at least partial regions of a second individual thread turn, and
wherein the partial regions of the first individual thread turn and of the second individual thread turn are of identical design and are arranged axially, one below another, on the inner surface of the fastening element.
6. The cable gland system of claim 1 , wherein the external thread and the internal thread respectively comprise a steep thread.
7. The cable gland system of claim 1 , wherein, in the second support surface of the fastening element, at least one slot-shaped recess extending parallel to the guide element in the screwed-on state is provided in a material of the fastening element.
8. The cable gland system of claim 7 , wherein the recess, at least in regions, runs circularly around the contact surface of the fastening element, and a projecting collar is arranged recessed in the second support surface.
9. The cable gland system of claim 1 , wherein at least two elevations are arranged on the first support surface in a direction of the first end region.
10. The cable gland system of claim 9 , wherein the at least two elevations are arranged radially opposite one another on the first support surface.
11. The cable gland system of claim 1 , wherein the fastening element comprises two halves, and
wherein the two halves are each configured to be positively connected to one another via a latching connection.
12. The cable gland system of claim 1 , wherein intermeshing regions of the internal thread and external thread have a roughened design, at least in regions, and have an average surface roughness in a range of 20 to 30.
13. The cable gland system of claim 1 , wherein spring connection elements are arranged on the second end region of the guide element.
14. A guide element for the cable gland system of claim 1 , comprising:
the opening configured to receive the cable;
the support surface configured to support on one side of the housing wall; and
the first end region and the opposite second end region, the external thread being arranged at least on the periphery of the first end region,
wherein the at least one contact surface with the contact structure is arranged on the periphery of the guide element, adjacent to the external thread.
15. A fastening element for a cable gland system, comprising:
a support surface configured to support on one side of a housing wall; and
an internal thread on an inner surface, the internal thread being configured to engage with an external thread on the guide element of claim 14 in a screwed-on state,
wherein the at least one contact surface with the contact structure is arranged on the inner surface.
16. The cable gland system of claim 12 , wherein the average surface roughness is according to VDI 3400 Cl. 36.