Transmission guided by stationary curved spindle
First Claim
1. An actuating arrangement for producing a movement of a displaceable member (21) along a curved path comprising:
- a motor comprising a stator (14) adapted to be connected to said displaceable member (21) and a rotor (5,
15);
a spindle (2) which in use of the arrangement is disposed stationarily and is curved to correspond to the configuration of said curved path, the spindle (2) having a screwthread means (24) thereon;
at least one nut means (4,
25) providing a screwthread configuration in rotatable screwthreading engagement with the screwthread means (24) on the spindle (2), the nut means (4,
25) being non-rotatably connected to said motor rotor (5,
15) whereby rotation of said motor rotor (5,
15) upon actuation of the motor causes rotary movement of said nut means (4,
25) about said spindle (2), and said rotary movement of said nut means (4,
25) in conjunction with the co-operation between the screwthread means (24) on the spindle (2) and the screwthread configuration of the nut means (14,
25) causes said stator (14) and therewith said displaceable member (21) to be displaced along said spindle (2).
0 Assignments
0 Petitions
Accused Products
Abstract
A structure which is of the utmost simplicity, rigidity and reliability has a transmission arrangement (1) for converting the rotary movement of a motor into a linear movement of a driven body (21) along a curved path. It is of a configuration that includes a stationarily arranged spindle (2) which is curved to correspond to the shape of the curved path, and at least one thread counterpart portion (4) which is engaged with the thread of the curved spindle and which is rotatable about the spindle, and by virtue of that rotary movement, displaceable in the longitudinal direction of the spindle. The stator (14) of the motor is connected to the driven body and is mounted non-rotatably and longitudinally displaceably with respect to the curved spindle, and the rotor (5, 15) of the motor is non-rotatably connected to the thread counterpart portion.
-
Citations
12 Claims
-
1. An actuating arrangement for producing a movement of a displaceable member (21) along a curved path comprising:
- a motor comprising a stator (14) adapted to be connected to said displaceable member (21) and a rotor (5,
15);
a spindle (2) which in use of the arrangement is disposed stationarily and is curved to correspond to the configuration of said curved path, the spindle (2) having a screwthread means (24) thereon;
at least one nut means (4,
25) providing a screwthread configuration in rotatable screwthreading engagement with the screwthread means (24) on the spindle (2), the nut means (4,
25) being non-rotatably connected to said motor rotor (5,
15) whereby rotation of said motor rotor (5,
15) upon actuation of the motor causes rotary movement of said nut means (4,
25) about said spindle (2), and said rotary movement of said nut means (4,
25) in conjunction with the co-operation between the screwthread means (24) on the spindle (2) and the screwthread configuration of the nut means (14,
25) causes said stator (14) and therewith said displaceable member (21) to be displaced along said spindle (2).
- a motor comprising a stator (14) adapted to be connected to said displaceable member (21) and a rotor (5,
-
2. A transmission arrangement for converting the rotary movement of a motor into a linear movement of a driven member along a curved path comprising:
- a stationarily arranged spindle (2) which is curved to correspond to the shape of the curved path, the spindle (2) having a screwthread means (24) thereon; and
at least one thread counterpart portion (4;
25) which provides a screwthread configuration in engagement with the screwthread means (24) of the spindle (2) and which is rotatable about the spindle (2) and is displaceable in the longitudinal direction of the spindle (2), wherein a stator (14) of the motor is adapted to be connected to the driven member (21) and is mounted non-rotatably and longitudinally displaceably with respect to the curved spindle (2), and a rotor (5,
15) of the motor is adapted to be non-rotatably connected to said thread counterpart portion (4;
25). - View Dependent Claims (3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
- a stationarily arranged spindle (2) which is curved to correspond to the shape of the curved path, the spindle (2) having a screwthread means (24) thereon; and
Specification