Linear actuator
A linear actuator is described comprising an actuator housing, a driven element moveable at a front end of the linear actuator and a mounting ( 4 ) at a rear end of the linear actuator, wherein the mounting ( 4 ) comprises two arms ( 9,10 ) and an accommodation space ( 11 ) between the two arms ( 9,10 ). The object underlying the invention is to provide a linear actuator which can easily be mounted with its rear mounting. To this end, at least one arm ( 9,10 ) is provided with a lever ( 12,13 ) which is rotatable about an axis between an open position and a closed position, wherein in the closed position, an end portion ( 14,16 ) of the lever ( 12,13 ) at least partly closes an opening ( 18 ) between the two arms ( 9,10 ) and in the open position makes the opening ( 18 ) accessible.
1. A linear actuator ( 1 ) comprising:
an actuator housing ( 2 );
a driven element ( 3 ) movable at a front end of the linear actuator ( 1 ); and
a mounting ( 4 ) at a rear end of the linear actuator ( 1 ), wherein the mounting ( 4 ) comprises:
two arms ( 9 , 10 ); and
an accommodation space ( 11 ) between the two arms ( 9 , 10 ) having an opening ( 18 ),
wherein at least one arm ( 9 , 10 ) is provided with a lever ( 12 , 13 ), the lever ( 12 , 13 ) having an end portion ( 14 , 16 ) at a first end distal to the actuator housing ( 2 ), and an actuation portion ( 15 , 17 ) at a second end proximal to the actuator housing ( 2 ), the lever ( 12 , 13 ) is configured to rotate relative to the at least one arm ( 9 , 10 ) about an axis located between the end portion ( 14 , 16 ) and the actuation portion ( 15 , 17 ), wherein the lever ( 12 , 13 ) is rotatable between an open position and a closed position, and wherein in the closed position, the end portion ( 14 , 16 ) of the lever ( 12 , 13 ) at least partly closes the opening ( 18 ) and in the open position makes the opening ( 18 ) accessible.
2. The linear actuator according to claim 1 , wherein the lever ( 12 , 13 ) is a two-arm lever, wherein in the open position, the actuating portion ( 15 , 17 ) protrudes into the accommodation space ( 11 ).
3. The linear actuator according to claim 1 , wherein the lever ( 12 , 13 ) is secured in the closed position by means of a snap connection.
4. The linear actuator according to claim 3 , wherein the snap connection is a releasable snap connection.
5. The linear actuator according to claim 4 , wherein the snap connection comprises a wedge arrangement ( 21 , 22 ) at the lever ( 12 , 13 ) and a stop arrangement ( 27 ) at the arm ( 9 , 10 ), wherein engagement of the wedge arrangement ( 21 , 22 ) and the stop arrangement ( 27 ) prevents rotation of the lever ( 12 , 13 ) about the axis.
6. The linear actuator according to claim 5 , wherein the wedge arrangement ( 21 , 22 ) and the stop arrangement ( 27 ) are movable relatively to each other in a direction perpendicular to the longitudinal axis of the inner tube ( 3 ).
7. The linear actuator according to claim 5 , wherein the wedge arrangement ( 21 , 22 ) is located on a resilient part of the lever ( 12 , 13 ).
8. The linear actuator according to claim 5 , wherein the wedge arrangement comprises at least two wedges ( 21 , 22 ), each wedge ( 21 , 22 ) being arranged on a resilient branch ( 19 , 20 ) of the lever ( 12 , 13 ), wherein the resilient branches ( 19 , 20 ) can be pressed towards each other to move the wedges ( 21 , 22 ) out of engagement with the stop arrangement ( 27 ).
9. The linear actuator according to claim 1 , wherein the mounting ( 4 ) comprises a fixture housing, wherein the fixture housing comprises two housing parts and the lever ( 12 , 13 ) is mounted between the two housing parts.
10. The linear actuator according to claim 1 , wherein each arm ( 9 , 10 ) comprises a lever ( 12 , 13 ).
11. The linear actuator according to claim 1 , wherein in the closed position at least in a region of the accommodation space ( 11 ) opposite the opening ( 18 ), the lever ( 12 , 13 ) extends into the accommodation space ( 11 ) over the arm ( 9 , 10 ).
12. The linear actuator according to claim 11 , wherein the lever ( 12 , 13 ) at least at a surface facing the accommodation space ( 11 ) is made of a material having a lower friction coefficient than the material of the arm ( 9 , 10 ).
13. The linear actuator according to claim 1 , wherein the surface of the arm ( 9 , 10 ) facing the accommodating space ( 11 ) has a lower friction coefficient than the lever ( 12 , 13 ) at least on a surface facing the accommodation space ( 11 ).