The explosion-proof housing for a sensor, in particular, for a rotary encoder having a shaft rotatably situated in the rotary encoder and axially aligned to detect a rotary angle, having a flameproof interior vis-a-vis the atmosphere, in which at least one sensor part is situated, and an at least tw
The explosion-proof housing for a sensor, in particular, for a rotary encoder having a shaft rotatably situated in the rotary encoder and axially aligned to detect a rotary angle, having a flameproof interior vis-a-vis the atmosphere, in which at least one sensor part is situated, and an at least two-part, approximately cylindrical overall housing is made up of a cover having a cable inlet, which is releasably coupled to a possibly multi-part housing by a plurality of fastening screws distributed around the circumference, and the contacting fastening planes of the cover and housing are designed as explosion-proof ex-joints, and at least the fastening screws between the cover and the possibly multi-piece housing create the separation between the flameproof interior and the atmosphere by forming ex-joints.
대표청구항▼
1. An explosion-proof housing for a sensor, the sensor having a shaft rotatably situated therein and axially aligned to detect a rotary angle, and a flameproof interior vis-a-vis the atmosphere, in which at least one sensor part is situated, the explosion-proof housing comprising an at least two-par
1. An explosion-proof housing for a sensor, the sensor having a shaft rotatably situated therein and axially aligned to detect a rotary angle, and a flameproof interior vis-a-vis the atmosphere, in which at least one sensor part is situated, the explosion-proof housing comprising an at least two-part, approximately cylindrical, edged or cone-shaped overall housing component comprising a cover, which is releasably coupled to an internal housing by a plurality of fastening screws distributed around the circumference, wherein at least a portion of the contacting fastening planes of the cover and the internal housing is designed as explosion-proof ex-joints, at least the fastening screws between the cover and the internal housing create the separation between the flame-proof interior and the atmosphere by forming ex-joints that outwardly continue in the radial direction as an explosion coupling joint between adjoining housing planes of the cover and the internal housing. 2. The explosion-proof housing according to claim 1, wherein one cylindrical shaft of the fastening screws forms an ex-joint in the direction of the inner circumference of a cylindrical through hole in the internal housing. 3. The explosion-proof housing according to claim 1, wherein the longitudinal extension of the ex joints formed by the fastening screws runs parallel to the longitudinal axis of the shaft and the overall housing. 4. The explosion-proof housing according to claim 1, wherein the explosion coupling joint is formed in a radially-outward straight manner or an angled, radially-outward straight manner and, additionally, in an axially angled manner. 5. The explosion-proof housing according to claim 1, wherein the joining gaps between the cover and the internal housing are cylindrical ex-joints extending in the axial direction. 6. The explosion-proof housing according to claim 1, wherein the sensor comprises a rotary encoder in which the shaft is rotatably situated. 7. The explosion-proof housing according to claim 1, wherein the internal housing comprises two housing elements coupled together by fastening screws. 8. The explosion-proof housing according to claim 1, wherein the internal housing comprises a cap and an end housing, and at the end face of the shaft rotatably included in the internal housing a permanent magnet is situated which, when the shaft is rotated, generates, in the direction of the sensor part located in the interior of the end housing, a rotative magnet field through the bottom part of a cylinder sleeve fitted into the end housing. 9. The explosion-proof housing according to claim 1, wherein the internal housing comprises a cap and an end housing, and an optical, capacitive or inductive material measure is disposed at the end face or at the circumference near the end face of the shaft rotatably included in the housing, which is, when the shaft is rotated, evaluated by a sensor part situated in the interior of the end housing. 10. The explosion-proof housing according to claim 1, wherein the width of the ex joints and their length are minimized so that when a flammable mixture is ignited in the interior of the overall housing, said mixture extinguishes on the length of the ex joints and cannot expand into the environment of the overall housing. 11. An explosion-proof housing for a rotary encoder having a shaft rotatably situated in the rotary encoder and axially aligned to detect a rotary angle, and having a flameproof interior vis-a-vis the atmosphere, in which at least one sensor part is situated, the explosion-proof housing comprising an at least two-part, approximately cylindrical, edged or cone-shaped overall housing component comprising a cover, which is releasably coupled to an internal housing by a plurality of fastening screws distributed around the circumference, wherein at least one portion of the contacting fastening planes of the cover and the internal housing is designed as explosion-proof ex-joints, wherein the plurality of fastening screws are securely mounted at the cover and form ex joints that outwardly continue in the radial direction as an explosion coupling joint between adjoining housing planes of the cover and the internal housing. 12. The explosion-proof housing according to claim 11, wherein the internal housing comprises a cap and an end housing, and at the end face of the shaft rotatably included in the internal housing a permanent magnet is situated which, when the shaft is rotated, generates, in the direction of the sensor part located in the interior of the end housing, a rotative magnet field through the bottom part of a cylinder sleeve fitted into the end housing. 13. The explosion-proof housing according to claim 11, wherein the internal housing comprises a cap and an end housing, and an optical, capacitive or inductive material measure is disposed at the end face or at the circumference near the end face of the shaft rotatably included in the housing, which is, when the shaft is rotated, evaluated by a sensor part situated in the interior of the end housing. 14. The explosion-proof housing according to claim 11, wherein the width of the ex joints and their length are minimized so that when a flammable mixture is ignited in the interior of the overall housing, said mixture extinguishes on the length of the ex joints and cannot expand into the environment of the overall housing. 15. An explosion-proof housing for a rotary encoder having a shaft rotatably situated in the rotary encoder and axially aligned to detect a rotary angle, and having a flameproof interior vis-a-vis the atmosphere, in which at least one sensor part is situated, the explosion-proof housing comprising an at least two-part, approximately cylindrical, edged or cone-shaped overall housing component comprising a cover, which is releasably coupled to an internal housing by a plurality of fastening screws distributed around the circumference, wherein at least one portion of the contacting fastening planes of the cover and the internal housing is designed as explosion-proof ex-joints, wherein the screw heads of the plurality of fastening screws are sealingly situated in the cover and the fastening screws form ex-joints that outwardly continue in the radial direction as an explosion coupling joint between adjoining housing planes of the cover and the internal housing. 16. The explosion-proof housing according to claim 15, wherein the internal housing comprises a cap and an end housing, and at the end face of the shaft rotatably included in the internal housing a permanent magnet is situated which, when the shaft is rotated, generates, in the direction of the sensor part located in the interior of the end housing, a rotative magnet field through the bottom part of a cylinder sleeve fitted into the end housing. 17. The explosion-proof housing according to claim 16, wherein the internal housing comprises a cap and an end housing, and an optical, capacitive or inductive material measure is disposed at the end face or at the circumference near the end face of the shaft rotatably included in the housing, which is, when the shaft is rotated, evaluated by a sensor part situated in the interior of the end housing. 18. The explosion-proof housing according to claim 16, wherein the width of the ex joints and their length are minimized so that when a flammable mixture is ignited in the interior of the overall housing, said mixture extinguishes on the length of the ex joints and cannot expand into the environment of the overall housing.
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이 특허에 인용된 특허 (4)
Henderson, Lewis T., Magnetic control devices for enclosures.
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