US 10,312,674 B2 · Explosion-proof assembly and method for producing same

Abstract

An explosion-proof arrangement (20) having a bushing part (23) with a bushing opening (24) that defines a bushing surface (25) and a structural unit (29) arranged in the bushing opening (24). The structural unit (29) includes a deformable inner body (31) with at least one conductor channel (32) extending through in a longitudinal direction (L), and a plastically deformable connecting sleeve (30) surrounding the inner body (31). At least one conductor (21) is guided through its own associated conductor channel (32) in the inner body (31). A connecting portion (33) of the connecting sleeve (30) is plastically deformed so that it presses radially inwardly on the inner body (31) and deforms it in a radial direction (R). A first delimiting surface (35) is formed on an outer circumference of the plastically deformed connecting portion (33). The bushing surface (25) forms a second delimiting surface (36). By arranging the structural unit (29) with the first delimiting surface (35) in the bushing opening (24), a flameproof Ex gap (37) is produced between the two delimiting surfaces (35, 36).

Claims17

Dependent claims

An explosion-proof assembly (20) comprising:

a bushing part (23) having a bushing opening (24) with a bushing surface (25),
an inner body (31) made of a deformable material having at least one conductor channel (32) extending through the inner body (31) in a longitudinal direction (L),
at least one conductor (21) extending through the at least one conductor channel (32) and having at least one electrical and/or optical conductor lead (22),
said inner body (31) being surrounded by a connecting sleeve (30) in a circumferential direction (U) about the longitudinal direction (L), said connecting sleeve (30) being made of a plastically deformable material and pressing inwardly on the inner body (31) as a result of plastic deformation of a connecting portion (33) of the inner body (31) which connects the inner body (31) to the conductor (21) in a frictionally engaged manner, and
said plastically deformed connecting portion (33) of said connecting sleeve (30) having a plastic deformed outer surface (34) that defines a first delimiting surface (35) which forms a flameproof [Ex] gap (37) with a second delimiting surface (36) defined by said bushing surface (25) configured to prevent any flame transmission through the [EX] gap.

2 more elements

Dependencies are inferred from the claim text.

Explosion-proof assembly and method for producing same

Life of this patent

Explosion-proof assembly and method for producing same

Life of this patent

Abstract

Claims17