A linear actuator useful for adjusting furniture includes a housing (1) with a reversible electric-motor (2) which, via a transmission (11, 13), drives a spindle (4) with a force absorbing bearing (16). On the spindle there is a nut (5) to which an actuation rod (86) is fixed surrounded by an outer
A linear actuator useful for adjusting furniture includes a housing (1) with a reversible electric-motor (2) which, via a transmission (11, 13), drives a spindle (4) with a force absorbing bearing (16). On the spindle there is a nut (5) to which an actuation rod (86) is fixed surrounded by an outer tube (7). The actuator is with the actuation rod and a rear mounting mounted in the construction into which the actuator should be built-in. The motor housing is part of the supporting construction, as a console is fixed to this (10) with a fixing for the outer tube, spindle bearing and a rear mounting and is designed to absorb the forces occurring hereon. As the housing, as with previously known actuators, need not absorb and transfer forces, this can be made as a thin shell.
대표청구항▼
What is claimed is: 1. A linear actuator for moving first and second elements of a construction relative to one another, said linear actuator comprising: a housing provided by a first housing part and a second housing part, said housing defining a front end and a rear end, a console located in said
What is claimed is: 1. A linear actuator for moving first and second elements of a construction relative to one another, said linear actuator comprising: a housing provided by a first housing part and a second housing part, said housing defining a front end and a rear end, a console located in said second housing part, said console providing a journal bearing and defining a front end and a rear end, a reversible electric motor positioned in said first housing part and connected to said console, a worm which extends into said journal bearing and connects with a worm wheel, said worm being driven by said electric motor, an outer tuber which is connected to a front end of said console and extends through an opening in the front end of said housing to a free end spaced forwardly of the front end of said housing, an activation rod which extends from within said housing through and beyond the free end of said outer tube to an end providing a first fitting for connection to one of said first and second elements to be moved relative to one another, said activation rod being telescopically movable relative to said outer tube, a spindle nut connected to said activation rod, a spindle bearing supported by said rear end of said console, a spindle which is mounted in said spindle bearing and extends through said console and through said spindle nut, rotation of said worm wheel by said electric motor causing said spindle to rotate and, via said spindle nut, telescopically move said activation rod relative to said outer tube, a rear mounting which is connected to said rear end of said console and extends through an opening in the rear end of said housing, said rear mounting including a fitting for connection to another of said first and second elements to be moved relative to one another, and said console absorbing forces occurring on the outer tube and the rear mounting. 2. A linear actuator according to claim 1, wherein said console includes a fitting section at its front end, and wherein a rear end of said outer tube extends within said fitting section. 3. A linear actuator according to claim 2, wherein said outer tube defines an opening therein, and including an inwardly-extending tap which extends through said opening in said outer tube to fix said outer tube within the fitting section. 4. A linear actuator according to claim 3, including a clamp which extends around said fitting section, said clamp including said inwardly-extending tap which extends through an aperture in said fitting section. 5. A linear actuator according to claim 1, wherein said rear mounting is separate from the console, and wherein said spindle bearing is contained within the rear mounting. 6. A linear actuator according to claim 5, wherein said rear mounting is formed of two cooperating elements. 7. A linear actuator according to claim 5, wherein the rear end of the console defines a cylindrical opening, wherein the rear mounting defines a cylindrical section which fits within said cylindrical opening, and wherein the cylindrical section includes an outwardly-extending flange that fits within a notch of said cylindrical section of said console so that said console and said rear mounting will rotate in unison. 8. A linear actuator according to claim 1, wherein said first fitting at the end of said activation rod comprises an eye that extends through the actuation rod, said eye having a raised rim at its opposite ends. 9. A linear actuator according to claim 1, including a circuit board within the housing for the motor, said circuit board including a male plug, and wherein said housing defines a well through which a female plug of an electrical line can be extended to connect with said male plug. 10. A linear actuator according to claim 1, wherein said spindle defines a longitudinal axis and wherein said first and second housing parts interengage along a plane which contains said longitudinal axis, said electric motor having a drive shaft that extends perpendicular to said plane. 11. A linear actuator according to claim 1, including a quick release comprising two cylindrical clutch parts surrounded by a clutch spring having outward bent ends, said ends being connected with its respective cylindrical element, seated under normal circumstances to take part in the rotation of the clutch, and where the two cylindrical elements with a release are fitted to enable them to impart a mutual rotation to turn the ends of the spring away from each other such that, the spring is released from at least one of the clutch parts for complete or partly release from the clutch, and where the two cylindrical elements have an exterior toothing, and the release has a corresponding toothing, which can be brought to mesh and thereby to a mutual turning of the elements. 12. A linear actuator according to claim 1, including a control box for fixing an angle between the housing part sitting over the motor and the outer tube, where the control box end, which faces the housing, has a corresponding shape and can be fixed hereto with ribs on the housing, said ribs being received in corresponding grooves on the control box, and where the control box with a clamp can be fixed to the outer tube.
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이 특허에 인용된 특허 (8)
Stern Robert G. (St. Louis MO) Mitchell Larry D. (Manchester MO), Bed arrangement.
Gong, Jiaxiong; Yin, Ming; Gong, Xiaojun; Liu, Quan; Zhang, Xiaoxiang; Mao, Yongyong, Lift chair and a chair base frame with a force balance mechanism for use therewith.
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