Cable protection structures
An impact-resistant cable connector includes a connector body, and a resilient block having a first surface facing the connector body and separated from the connector body by a first distance, a second surface opposite the first surface, and one or more bores, each of the one or more bores running through both the first surface and the second surface. One or more wires are coupled to the connector body, each respective one of the wires passing through a respective one of the bores. The resilient block is configured to limit bending of the one or more wires about a first axis parallel to the first surface. Such configuration may include spacing the resilient block away from the first surface by a first distance that is less than half the height of the resilient block.
1. An impact-resistant cable connector, comprising:
a connector body;
a resilient block having a first surface facing the connector body and separated from the connector body by a first axial distance, a second surface opposite the first surface, and one or more bores, each of the one or more bores running through both the first surface and the second surface; and
one or more wires coupled to the connector body, each respective one of the wires passing through a respective one of the bores;
wherein the resilient block is configured to limit bending of the one or more wires about a first axis parallel to the first surface.
2. The impact-resistant cable connector of claim 1 wherein the resilient block has a first hardness, and the connector body has a second hardness higher than the first hardness.
3. The impact-resistant cable connector of claim 2 wherein the first hardness has a Durometer Shore A value between 55 and 70.
4. The impact-resistant cable connector of claim 1 having two or more bores in the resilient block and two or more wires coupled to the resilient block, the two or more bores being spaced apart by a distance sufficient to prevent at least one of arcing and short-circuiting between the wires when insulation on the wires is damaged.
5. The impact-resistant cable connector of claim 1 wherein the resilient block has a degree of electrical insulation sufficient to prevent at least one of arcing and short-circuiting between the wires when insulation on the wires is damaged.
6. The impact-resistant cable connector of claim 5 wherein the resilient block has a comparative tracking index between 400 and 600.
7. The impact-resistant cable connector of claim 1 wherein each respective one of the bores has an inner diameter that is sized to provide an interference fit with an outer diameter of each respective one of the wires.
8. The impact-resistant cable connector of claim 1 further comprising:
an abrasion-resistant sleeve surrounding the resilient block and the wires; and
a fastener that frictionally clamps the abrasion-resistant sleeve to the resilient block.
9. The impact-resistant cable connector of claim 1 wherein:
the resilient block has a block height measured in a first direction along the first surface perpendicular to the first axis; and
the first axial distance is less than half the block height.
10. The impact-resistant cable connector of claim 9 , wherein:
the connector body has a connector body height measured in the first direction; and
the first axial distance is less than half the connector body height.
11. A resilient block for use in an impact-resistant cable assembly, the resilient block having a one or more bores extending therethrough from a first surface to a second surface opposite the first surface, for the passage of one or more wires, wherein:
the resilient block is configured to limit bending of the one or more wires about a first axis parallel to the first surface, within a first distance from the first surface, wherein the first distance is an axial distance separating the first surface from a connector body; and
the resilient block has a hardness with a Durometer Shore A value between 55 and 70.
12. The resilient block of claim 11 having two or more bores for the passage of two or more respective wires, the bores being spaced apart by a distance sufficient to prevent at least one of arcing and short-circuiting between the wires when insulation on the wires is damaged.
13. The resilient block of claim 11 having a comparative tracking index between 175 and 600.
14. The resilient block of claim 13 wherein the comparative tracking index is between 400 and 600.
15. The resilient block of claim 11 having a block height measured in a first direction along the first surface perpendicular to the first axis, the first distance being less than half the block height.
16. An impact-resistant cable assembly comprising:
one or more wires;
a resilient block having a number of bores extending therethrough from a first surface to a second surface opposite the first surface, the number of bores corresponding to the number of wires, each respective one of the wires passing through a respective one of the bores, the resilient block being configured to limit bending of the one or more wires about an axis parallel to the first surface, within a first distance from the first surface, wherein the first distance is an axial distance separating the first surface from a connector body;
an abrasion-resistant sleeve surrounding the resilient block and the one or more wires; and
a fastener that frictionally clamps the abrasion-resistant sleeve to the resilient block.
17. The impact-resistant cable assembly of claim 16 wherein the resilient block has a hardness with a Durometer Shore A value between 55 and 70.
18. The impact-resistant cable assembly of claim 16 wherein the resilient block has a comparative tracking index between 175 and 600.
19. The impact-resistant cable assembly of claim 18 wherein the resilient block has a comparative tracking index between 400 and 600.
20. The impact-resistant cable assembly of claim 16 wherein the resilient block has a block height measured in a first direction along the first surface perpendicular to the axis, the first distance being less than half the block height.