PATENTKRAV 1. Motordrevet lineardrev, især et dobbeltdrev med to drivenheder til hver at forskyde en møbelkomponent, og med et kasselignende hus (14), som er forsynet med parallelle og i indbyrdes afstand anbragte sidevægge (22) og er lukket ved hjælp af et påsat låg, hvorhos huset (14) er forsynet med flugtende udsparinger, hvori kan indføres en af den respektive drivenhed drejelig aksel (1Θ) i et møbel, og hvor stødfladen mellem huset (14) og låget strækker sig parallelt med og forskudt fra akslens (18) længdeakse og parallel med en spindel (12) i respektive drivenhed, og hvor hver drivenhed er forsynet med en drivmotor (10) på en sådan måde, at udsparingerne befinder sig mellem drivmotorerne (10), og hvor hver drivmotor (10) er efterkoblet et motorens omdrejningstal reducerende gear tii at drive den ved hjælp af et leje (16) lejrede spindel (12), og hvilken ved hjælp af en fikseringsanordning (17) fastholdes funktionsoverensstemmende, kendetegnet ved, at fikseringsanordningen er udformet som et formstykke (17), som i det mindste delvis er indsat form- og/eller kraftlåsende i det gearet (11) optagende huskammer (15). 2. Lineardrev ifølge krav 1, kendetegnet ved, at der forsat fra lejesædet for lejet (16) til lejrng af spindlen (12) er anformet en flange til at holde drivmotoren (10) på formstykket (17). 3. Lineardrev ifølge krav 1 eller 2, kendetegnet ved, at der af den elektriske drivmotor (10) med påsat eller anformet snekke, formstykket (17), lejet (16) for spindlen (12) og snekkehjulet (11) er dannet en underenhed. 4. Lineardrev ifølge krav 1, kendetegnet ved, at formstykket (17) er potteformet og udviser et lejesæde for det spindlen (12) holdende leje (16). 5. Lineardrev ifølge krav 1-4, kendetegnet ved, at formstykket (17) består af et materiale med større styrke end husets (14) materiale. 6. Lineardrev ifølge krav 1-5, kendetegnet ved, at huset (14) i de områder af lineardrevet, hvor forholdsvis store forskydningskræfter via lejet (16) afledes til huset, udviser lister, ribber eller vægge, som er markant tykkere end de øvrige husafsnit. 7. Lineardrev ifølge krav 2, kendetegnet ved, at formstykket (17) på den åbne fra lejesædet vendte side udviser et snekkehjulet (11) i det mindste delvis omgribende støtteafsnit. 8. Lineardrev ifølge krav 7, kendetegnet ved, at støtteafsnittet er ring- eller skålformet. 9. Lineardrev ifølge krav 8, kendetegnet ved, at det af formstykkets (17) støtteafsnit omgrebne område af snekkehjulet (11) mindst udgør 180°. 10. Lineardrev ifølge krav 1-9 og udformet som dobbeltdrev til bevægelse af ryglæn og fodende i en lamelbund, kendetegnet ved, at huset (14) ved spindelmøtrikkerne (13) udviser to flugtende udsparinger, hvori omstillingsakslerne er anbragt. 11. Lineardrev ifølge krav 10, kendetegnet ved, at de flugtende udsparinger i huset (14) er tilordnet i føringer anbragte bolte. 12. Lineardrev ifølge krav 11, kendetegnet ved. at føringerne forløber parallelt og i indbyrdes afstand, og at føringerne forløber i spindlens længderetning eller på tværs af spindlen (12). 13. Lineardrev ifølge krav 1-12, kendetegnet ved, at der på hver spindel (12) er påsat en mod drejning sikret spindelmøtrik (13). 14. Lineardrev ifølge krav 13, kendetegnet ved, at spindelmøtrikken (13) er anbragt i området mellem husets (14) udsparinger og lejet (16). 15. Lineardrev ifølge krav 14, kendetegnet ved, at udsparingerne for akslen (18) findes mellem spindelmøtrik (13) og huskammer (15). 16. Lineardrev ifølge krav 1-15, kendetegnet ved, at husets (14) vægge i det mindste i områder grænsende til udsparingerne for akslen (18) er udformet med flere vægge, fortrinsvis dobbeltvægget. 17. Lineardrev ifølge krav 16, kendetegnet ved, at de enkelte udstående vægge i huset (14) er forbundet indbyrdes ved hjælp af ribber eller lister. 18. Lineardrev ifølge krav 1-17, kendetegnet ved, at husets sidevægge er udformet i det væsentlige uden afbrydelser og i det væsentlige retlinjet i husets (14) længderetning, og at de enkelte udstående vægge ved udsparingerne springer udad og/eller indad. 19. Lineardrev ifølge krav 18, kendetegnet ved, at husets (14) vægge i det mindste ved udsparingerne er udformet symmetrisk på en sådan måde, at den indre væg springer indad, og den ydre væg springer udad. 20. Lineardrev ifølge krav 1-19, kendetegnet ved, at husets (14) dele er forbundet med hinanden ved hjælp af en egnet sammenføjningsmetode, eksempelvis ved hjælp af skrueforbindelser, klæbeforbindelser, svejseforbindelser og lignende, og at husets (14) dele eventuelt har i hinanden indgribende afsnit. 21. Lineardrev ifølge krav 1-20, kendetegnet ved, at spindlens (12) længdeakse ligger i planet for stødfladen mellem huset (14) og låget.PATENT REQUIREMENT 1. Motor-driven linear drive, in particular a dual drive with two drive units for displacing a furniture component each, and with a box-like housing (14) provided with parallel and spaced side walls (22) and closed by means of a mounted a lid in which the housing (14) is provided with flush recesses into which a shaft (1Θ) pivotable by the respective drive unit can be inserted into a furniture, and the impact surface between the housing (14) and the lid extends parallel to and displaced from the shaft (18). longitudinal axis and parallel to a spindle (12) in respective drive unit, each drive unit being provided with a drive motor (10) in such a way that the recesses are located between the drive motors (10) and where each drive motor (10) is switched on an engine rpm reducing gear to drive the spindle (12) mounted by a bearing (16), and which is secured to a function-compliant device (17), characterized in that the device is formed as a molding piece (17) which is at least partially inserted molding and / or force-locking in the housing chamber (15) receiving the housing (11). Linear drive according to claim 1, characterized in that a flange for holding the drive motor (10) on the molding piece (17) is provided from the bearing seat of the bearing (16) for bearing the spindle (12). Linear drive according to claim 1 or 2, characterized in that a sub-unit is formed by the electric drive motor (10) with attached or shaped worm, the mold (17), the bearing (16) for the spindle (12) and the worm wheel (11). . Linear drive according to claim 1, characterized in that the molding (17) is potted and has a bearing seat for the bearing (16) holding the spindle (12). Linear drive according to claims 1-4, characterized in that the molding piece (17) consists of a material of greater strength than the material of the housing (14). Linear drive according to claims 1-5, characterized in that the housing (14) in the areas of the linear drive where relatively large shear forces are applied via the bearing (16) to the housing, exhibits strips, ribs or walls which are significantly thicker than the other housing section. Linear drive according to claim 2, characterized in that the molding piece (17) on the open side facing away from the bearing seat has a worm wheel (11) at least partially engaging support section. Linear drive according to claim 7, characterized in that the support section is annular or bowl-shaped. Linear drive according to claim 8, characterized in that the area of the worm wheel (11) enclosed by the support portion (17) of the molding piece (17) is at least 180 °. Linear drive according to claims 1-9 and designed as a double drive for movement of backrests and footings in a slat bottom, characterized in that the housing (14) at the spindle nuts (13) exhibits two flush recesses in which the switching shafts are arranged. Linear drive according to Claim 10, characterized in that the flush recesses in the housing (14) are provided in guiding bolts. Linear drive according to claim 11, characterized in. that the guides extend in parallel and spaced apart, and that the guides extend in the longitudinal direction of the spindle or across the spindle (12). Linear drive according to claims 1-12, characterized in that on each spindle (12) a spindle nut (13) is secured against rotation. Linear drive according to claim 13, characterized in that the spindle nut (13) is arranged in the region between the recesses of the housing (14) and the bearing (16). Linear drive according to claim 14, characterized in that the recesses for the shaft (18) are located between spindle nut (13) and housing chamber (15). Linear drive according to claims 1-15, characterized in that the walls (14) of the housing (14) are formed, at least in areas adjacent to the recesses of the shaft (18), with multiple walls, preferably double-walled. Linear drive according to claim 16, characterized in that the individual protruding walls of the housing (14) are interconnected by means of ribs or moldings. Linear drive according to claims 1-17, characterized in that the sidewalls of the housing are formed substantially without interruptions and substantially rectilinear in the longitudinal direction of the housing (14) and that the individual protruding walls at the recesses project outwards and / or inwards. Linear drive according to claim 18, characterized in that the walls of the housing (14) at least by the recesses are designed symmetrically in such a way that the inner wall protrudes inwards and the outer wall protrudes outwards. Linear drive according to claims 1-19, characterized in that the parts of the housing (14) are connected to each other by a suitable joining method, for example by means of screw connections, adhesive connections, welding joints and the like, and that the parts of the housing (14) optionally have interrelated sections. Linear drive according to claims 1-20, characterized in that the longitudinal axis of the spindle (12) lies in the plane of the impact surface between the housing (14) and the lid.