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An electromotive linear drive in the form of a dual drive adjust movably mounted parts of reclining and seating furniture. Two threaded spindles (2, 3) driven by a worm gear and which are arranged one behind the other and flush with one another for displacing a lifting element. Bearings are provided

An electromotive linear drive in the form of a dual drive adjust movably mounted parts of reclining and seating furniture. Two threaded spindles (2, 3) driven by a worm gear and which are arranged one behind the other and flush with one another for displacing a lifting element. Bearings are provided at both ends of each threaded spindle (2, 3). The bearings are designed as roller bearings (4, 5) having an inner ring (6) and an outer ring (7). The aim of the invention is to design an electromotive dual drive in such a way that a short overall length is achieved and that the stability of the structure is increased. Said aim is achieved by arranging an abutment between both roller bearings (4, 5), which accommodate the spindle ends, on which the roller bearings are supported on from both sides.

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1. An electric motor-actuated linear drive for adjusting moveably mounted parts of lying and seating furniture, comprising two threaded spindles (2, 3) drivable by way of a respective worm gear transmission and arranged in successive and mutually aligned relationship for displacement of a respective

1. An electric motor-actuated linear drive for adjusting moveably mounted parts of lying and seating furniture, comprising two threaded spindles (2, 3) drivable by way of a respective worm gear transmission and arranged in successive and mutually aligned relationship for displacement of a respective stroke element and bearings provided at both ends of each threaded spindle (2, 3), wherein at least the bearings arranged at the spindle ends which are close to each other are in the form of rolling bearings (4, 5) having an inner race (6) and an outer race (7), characterised in that arranged between the two rolling bearings (4, 5) which carry the spindle ends that are close to each other is a support means at which the rolling bearings are mutually supported from both sides. 2. An electric motor-actuated linear drive according to claim 1, wherein the support means is in the form of a plate (15). 3. An electric motor-actuated linear drive according to claim 2, wherein the plate (15) is of a diameter larger than the outside diameter of the outer race (7) of the rolling bearings (4, 5). 4. An electric motor-actuated linear drive according to claim 2, wherein the plate (15) has a central round opening (16) whose diameter is smaller than the inside diameter of the outer race (7) of the rolling bearings (4, 5). 5. An electric motor-actuated linear drive according to claim 4, wherein the diameter of the central round opening (16) of the plate (15) is larger than the outside diameter of the inner race (6) of the rolling bearings (4, 5). 6. An electric motor-actuated linear drive according to claim 1, wherein the support means or the plate (15) comprises metal. 7. An electric motor-actuated linear drive according to claim 6, wherein the support means or the plate (15) comprises steel. 8. An electric motor-actuated linear drive according to claim 6, wherein the support means or the plate (15) comprises a zinc or aluminium alloy. 9. An electric motor-actuated linear drive according to claim 1, wherein the support means or the plate (15) comprises plastic. 10. An electric motor-actuated linear drive according to claim 9, wherein the support means or the plate (15) comprises high-strength, fibre-reinforced plastic. 11. An electric motor-actuated linear drive according to claim 2, wherein the plate (15) is rectangular or square. 12. An electric motor-actuated linear drive according to claim 2, wherein the plate has rounded corners. 13. An electric motor-actuated linear drive according to claim 2, wherein the plate is round. 14. An electric motor-actuated linear drive according to claim 1, wherein ball bearings are provided as the rolling bearings (4, 5).