JPH065366U - Actuator - Google Patents

Abstract

(57) [Abstract] [Purpose] By effectively utilizing the hollow part of the outer rotor type actuator, an output shaft is provided on the same side as the actuator mounting side or on the opposite side, improving maintenance and installation. It is an object of the present invention to provide an actuator that realizes position flexibility. [Structure] Both have an outer rotor type, and the inner stator has a hollow structure direct drive motor and magnetic resolver. These direct drive motor and magnetic resolver are connected between rotors and stators. In the actuators arranged in the axial direction, a connecting shaft penetrates the actuator, and the connecting shaft is connected to a direct drive motor. As a result, both ends of the connecting shaft become output shafts arranged at both ends of the actuator.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to improvement of an actuator used as a component for performing a positioning operation in the field of FA (Factory Automation).

[0002]

[Prior art]

 Conventionally, such an actuator has, for example, a structure shown in FIG. In FIG. 2, 1 is a motor and 2 is a magnetic resolver. Both the motor 1 and the magnetic resolver 2 are outer rotor type, and the inner stator has a hollow structure.

The motor 1 is a direct drive type motor. In the motor 1, 11 is a stator, 12 is a rotor, and 13 is a bearing that rotatably supports the rotor 12 on the stator 11. In the stator 11, 111 is a cylindrical stator flange, and 112 is a stator core attached to the outside of the stator flange 111 via a shield ring 113 made of a non-magnetic material. The stator core 112 is made of laminated steel plates, and is provided with salient poles with teeth having a constant pitch formed at the tips. Reference numeral 114 is a coil wound over two stator cores, and 115 is a permanent magnet sandwiched between the two stator cores. Reference numeral 116 is a clamp for sandwiching the bearing 13 from above and below, and 117 is a lower flange fixed to the lower portion of the stator flange 111. In the rotor 12, 121 is a cylindrical rotor flange, 122 is a rotor core fixed to the inner peripheral surface of the rotor flange 121, and 123 and 124 are upper flanges and lower flanges fixed to the upper and lower portions of the rotor flange 121. . The rotor core 122 is made of laminated steel plates, and teeth are formed at a constant pitch at positions facing the teeth of the stator core 112.

The magnetic resolver 2 forms the stator 21 and the rotor 22 by utilizing the lower flanges 117 and 124. In the stator 21, 211 is a core fixed outside the lower flange 117 via a non-magnetic ring 212, and 213 is a coil wound over two cores. Teeth are formed at a constant pitch at the tip of the core 211. In the rotor 22, 221 is a core fixed to the outside of the lower flange 124 via a non-magnetic ring 222. Teeth are also formed on the core 221 at a constant pitch. The stator flange 111 and the lower flange 117 form the hollow portion 14.

However, in this actuator, the lower flange 117, which is the portion fixed to the mounting base, and the upper flange 123, which is the portion that is connected to the positioning target, are on the opposite side. Therefore, when the actuator is installed in the FA device, the actuator is often fixed to the bottom surface of the device and the positioning target is arranged above the actuator. This makes it difficult to perform maintenance work on the actuator placed on the bottom of the device. In addition, the positions where actuators can be installed were limited.

[0006]

[Problems to be solved by the device]

 The present invention has been made to solve the above-mentioned problems, and by effectively utilizing the hollow portion of the outer rotor type actuator, the output shaft can be mounted on the same side as the actuator mounting side or on the opposite side. It is an object of the present invention to provide an actuator which is improved in maintainability and has flexibility in installation position.

[0007]

[Means for Solving the Problems]

 The present invention has an outer rotor type and a stator inside which has a hollow structure direct drive motor and magnetic resolver. These direct drive motor and magnetic resolver connect rotors and stators. In the axially arranged actuator, the hollow portion formed by the direct drive motor and the stator of the magnetic resolver is penetrated, one end is connected to the rotor of the direct drive motor, and the other end is magnetic. The actuator is characterized in that it has a connecting shaft protruding from the stator of the resolver, and both ends of the connecting shaft are output shafts.

[0008]

[Action]

 In this invention, the connecting shaft penetrates the actuator, and the connecting shaft rotates as the direct drive motor rotates. As a result, both ends of the connecting shaft become output shafts arranged at both ends of the actuator.

[0009]

【Example】

 The present invention will be described below with reference to the drawings. FIG. 1 is a block diagram showing an embodiment of the present invention. 1 that are the same as those in FIG. 2 are given the same symbols. In FIG. 1, 3 is a connecting shaft, which is composed of a connecting member 31 and a through shaft 32. The connecting member 31 is connected to the upper flange 123. The penetrating shaft 32 penetrates the hollow portion 14, has one end connected to the connecting member 31, and the other end protruding from the hollow portion 14. Reference numerals 33 and 34 are fitting portions provided on the connecting member 31 and the through shaft 32, respectively. A positioning object such as a disc plate is fitted into the fitting portions 33 and 34. The connecting shaft 3 may have a structure in which a positioning target is fixed by a screw without providing a fitting portion. Reference numeral 4 is a mounting flange fixed to the lower flange 117. The penetrating shaft 32 penetrates the mounting flange 117. The mounting flange 117 fixes the actuator to the fitting portion. Since the penetrating shaft 32 is cantilevered, a bearing may be provided between the penetrating shaft 32 and the lower flange 117 when the positional deviation occurring on the free end side is large.

In such an actuator, the rotation of the motor 1 is transmitted to the connecting member 31 and the penetrating shaft 32 via the upper flange 123. As a result, the connecting member 31 and the penetrating shaft 32 rotate as the motor 1 rotates, and the fitting portions 33 and 34 serve as the output shaft of the actuator. That is, output shafts are provided on both sides of the actuator.

[0011]

[Effect of device]

 According to the present invention, since the connecting shaft penetrates the hollow portion of the actuator and the connecting shaft is connected to the rotor of the motor, the output shaft can be provided on both sides of the actuator. As a result, output shafts are provided on the same side as the actuator's mounting side and on the opposite side. Therefore, when the actuator is installed in the FA device, it can be positioned without positioning the actuator on the bottom of the device. Power can be transmitted. This allows the actuator to be placed in a position that is easy to maintain. In addition, the position where the actuator can be arranged is flexible.

[Brief description of drawings]

FIG. 1 is a block diagram showing an embodiment of the present invention.

FIG. 2 is a diagram showing a configuration example of a conventional actuator.

[Explanation of symbols]

 1 Motor 2 Magnetic Resolver 11, 21 Stator 12, 22 Rotor 14 Hollow Part 3 Connection Shaft

Claims (1)

[Scope of utility model registration request] 1. An outer rotor type inner stator having a hollow structure direct drive motor and a magnetic resolver.
In an actuator in which a motor and a magnetic resolver are connected in an axial direction by connecting rotors and stators to each other, a hollow portion formed by the direct drive motor and the stator of the magnetic resolver is penetrated, and one end of the direct drive An actuator characterized in that it has a connecting shaft that is connected to a rotor of a motor and has the other end protruding from a stator of a magnetic resolver, and that both ends of this connecting shaft are output shafts.