Abstract: The invention relates to an explosion-proof arrangement (10) with an explosion-proof housing (11) which has a wall opening (23) in a housing wall (12). The wall thickness (d) of the housing wall (12) is so small that it is not possible to form a thread there in order to screw in a connecting body (15) for a line to pass through or for receiving an assembly so as to ensure protection against flame transmission. According to the invention, a connecting body (25), which has a flange (38) with a flange face (39), is inserted into the wall opening (23). The flange face (39) delimits a flameproof gap (58) by way of the housing wall (12). The dimensions of a gap or intermediate space between the connecting body (25) and a boundary face (24) of the housing wall (12), which boundary face delimits the wall opening (23), are not important. The protection against flame transmission can be provided solely by the flameproof gap (58) between the flange face (39) and the housing wall (12).

Abstract: The method according to the present disclosure provides a plastic housing or other plastic component also according to the present disclosure, wherein the plastic contains a flame retardant, preferably red phosphorus. According to the present disclosure, near-surface regions of the plastic housing or of the rest of the component are depleted of phosphorus. This measure, without impairment of the flame retardancy of the phosphorus used as flame retardant, achieves inertization of the plastic surface in that the plastic surface no longer corrosively attacks adjacent metal components and especially electrical or electronic components.

Abstract: An explosion-proof housing (1) according to the invention comprises: a housing body (2) which delimits an interior (3) and comprises a housing opening (9) that offers access to the interior (3); at least one central strut (14) which extends between portions of the housing body (2) and subdivides the housing opening (9) into at least two opening portions (9a, 9b), and at least two separate covers (32) which are designed and arranged, in the closed state, to each be secured to the housing body (2) and to the central strut (14) in such a way that, between the covers (32) and the housing body (2) as well as between the covers (32) and the central strut (14) invariably flameproof joints (41, 42, 52, 53) are formed. The central strut (14) is detachably mounted to the housing body (2) and, in the mounted state, is loosely mounted on the housing body (2) and movably supported such that the central strut is fixed directly to the housing body (2) without the use of fixing means.

Abstract: A connector device including: a plug which has a plug housing and at least one electrical plug contact that is held so as to be insulated in the plug housing; and a socket which has a socket housing and a socket contact. The socket housing has an electrically insulating plug channel for receiving the plug contact, in which plug channel the socket contact is located. A sleeve is rotatably arranged on the plug housing or the socket housing. A slotted guide arrangement is operatively disposed between the sleeve, the plug housing and the socket housing. A slotted guide of the slotted guide arrangement has a separating portion having a slope relative to a circumferential direction. After the separating portion in an opening direction, a delay portion is located, which has a smaller slope than the separating portion.

Abstract: A pressure relief device for an explosion-proof housing. The pressure relief device has a lamellae arrangement having a plurality of lamellae. The lamellae are arranged in a transverse direction with distance to one another and thereby limit flow channel between two lamellae respectively. Each flow channel establishes a flow connection between a first opening and a second opening of the lamellae arrangement that are arranged with distance to one another in flow direction. Each flow channel has a non-straight preferably meandering or wave-shaped extension between the first opening and the second opening and can be flameproof as an option. Water drops that accumulate inside the flow channel are retained due to the contact with the two adjacent lamellae due to adhesion forces. In doing so, the pressure relief device is configured as protection against throughflow of water without additional measures.

Abstract: An explosion-proof housing, which forms an interior for accommodating components that can form ignition sources. The housing has a first housing part with a first section which has a first face, and a second housing part with a second section which has a second face, the first section and/or the second section being a section of a wall, the first face and the second face delimiting an intermediate region. The first section and the second section are pressed against each other with elastic deformation of the wall section so that the intermediate region is geometrically closed in a flameproof manner by the elastic deformation of the wall section. The invention also relates to a method for producing an explosion-proof connection between a first section of a first housing part with a first face and a second section of a second housing part with a second face of a housing, at least one of the sections being a section of a wall.

Abstract: The invention relates to an explosion-proof housing (10) with a housing body (11) which delimits an interior (13) and has a housing opening (14). The housing opening (14) can be closed by means of a cover (17). In the closed position of the cover (17), a flameproof gap (18) is formed between the housing body (11) and in particular a housing flange (15) of the housing body (11) and the cover (17). The housing body (11) has a plurality of housing walls (12), which have such a low wall thickness (s) that the housing walls (12) would not withstand the pressure of an explosion in the interior (13). The housing body (11) is therefore reinforced by a reinforcing frame (30) arranged outside the interior (13). The reinforcing frame (30) has a ring frame part (31) that is arranged adjacently to the housing opening (14) and fully surrounds the housing body (11) in an annular fashion. In particular, the ring frame part (31) directly adjoins the housing flange (15).

Abstract: The invention relates to an explosion-proof arrangement (10) with an explosion-proof housing (11) which has a wall opening (23) in a housing wall (12). The wall thickness (d) of the housing wall (12) is so small that it is not possible to form a thread there in order to screw in a connecting body (15) for a line to pass through or for receiving an assembly so as to ensure protection against flame transmission. According to the invention, a connecting body (25), which has a flange (38) with a flange face (39), is inserted into the wall opening (23). The flange face (39) delimits a flameproof gap (58) by way of the housing wall (12). The dimensions of a gap or intermediate space between the connecting body (25) and a boundary face (24) of the housing wall (12), which boundary face delimits the wall opening (23), are not important. The protection against flame transmission can be provided solely by the flameproof gap (58) between the flange face (39) and the housing wall (12).

Abstract: An explosion-proof line bushing and method for producing the line bushing. A prespecified amount of elastomeric material is applied to a line and completely surrounds the line in a flat section in the circumferential direction. The line is inserted into a passage opening of a bushing body. The bushing body is preferably plastically deformed. After the plastic deformation, the elastomeric material substantially fills the volume remaining between the formed bushing body and line. The elastomeric material is elastically deformed and presses both against the line and the formed bushing body so that flame-proof gaps are formed between the bushing body and the line. The applied mass of the elastomeric material is determined depending on the inner volume between the formed bushing body and the line remaining.

Abstract: An explosion-proof line bushing and method for producing the line bushing. A prespecified amount of elastomeric material is applied to a line and completely surrounds the line in a flat section in the circumferential direction. The line is inserted into a passage opening of a bushing body. The bushing body is preferably plastically deformed. After the plastic deformation, the elastomeric material substantially fills the volume remaining between the formed bushing body and line. The elastomeric material is elastically deformed and presses both against the line and the formed bushing body, so that flame-proof gaps are formed between the bushing body and the line. The applied mass of the elastomeric material is determined depending on the inner volume between the formed bushing body and the line remaining.

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).

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).