JPH0589923A - Rotation detector built-in motor - Google Patents

Abstract

PURPOSE:To dispense with a cable drawn from a rotation detector-built-in motor, reduce the size of the product and improve maintenance. CONSTITUTION:Without using a power supply/signal output cable drawn from a detector 2, such a assembling structure that signals are automatically connected together between a pin-side connector 11a provided in the detector 2 and a boss-side connector 11b provided in a motor 1 is realized and connectors 19, 20 for the detector and a motor power supply, respectively, are arranged on the flange on the load side of the motor. A rotational detector-built-in motor is so constructed as to be directly connected to a connector previously provided on the machine mainframe side when the motor is assembled in the machine mainframe to completely exclude the drawn cable, and packings are arranged on the connectors 11a, 19, 20 to prevent the entry of oil/water from the outside into the connectors after assembly.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a motor with a rotation detector used in the field of NC (numerical control) machine tools and the like.

[0002]

2. Description of the Related Art FIG. 5 is an explanatory view showing the structure of a conventional motor with a rotation detector. In the figure, 1 is a motor, 2 is a detector, 3 is a detector cable for power supply / signal output of the detector 2, and 4 is a detection having a detachable structure for connecting the detector cable 3 and the detector 2 Cannon connector 5 for equipment, a cannon connector for motors arranged on the side of the motor 1, 6 is a cable for motors drawn out from the cannon connector 5 for motors, and 7 is a bolt. FIG. 6 is a cross-sectional view of the coupling portion in the state where the detector 2 is incorporated in the motor 1.
Reference numeral 8 is a coupling which is inserted and attached to the rotary shaft of the motor 1, and 9 is attached to the fitting portion of the motor 1 and the detector 2.
Shows the ring.

The detector 2 is arranged on the side opposite to the load of the motor 1 and is directly connected to the coupling 8 formed on the detector side 2 for transmitting the rotation of the motor 1, so that the motor 1 and the detector 2 are fitted together. In order to ensure the airtightness of the joint, it is incorporated into the motor 1 by a bolt 7 for fixing the detector via an O-ring 9. The power supply to the detector 2 and the output signal from the detector 2 are connected to the control circuit side by the detector cable 3, and the connection between the detector cable 3 and the detector 2 is a detachable detector canon connector 4 Is commonly used. Further, the power supply to the motor 1 is also connected by the motor cannon connector 5 as in the detector 2, and both the pulled out cables are pulled to the control amplifier side installed on the machine body side with an arbitrary length. It is configured to be rotated.

Another reference technical document related to the present invention is "electrical device connector" disclosed in Japanese Patent Laid-Open No. 62-52867.

[0005]

Since the conventional motor with a rotation detector is constructed as described above, when it is installed in the machine body, there are projections of the detector canon connector and the motor canon connector. However, there is a problem that it is necessary to secure an extra space portion, which hinders downsizing of the machine.

Further, when used in a machine tool or the like, since it is arranged in a state in which lubricating / cutting oil is applied, it is necessary to select a material having excellent oil resistance for the detector cable and the motor cable. The cannon connector for motors and the cannon connector for motors can be equipped with a special product with a smear structure or a protective structure using a separate part to prevent lubricant / cutting oil from entering the inside of the motor / detector. Was needed. In addition, the signal output from the detector is easily affected by external electromagnetic noise around the machine, and it is necessary to consider the method of routing the detector cable and the shield structure for shielding the noise. In this case, there is a problem that it is difficult to remove the detector canon connector and the motor canon connector because the space around the motor is small due to the structure of the machine.

The present invention has been made to solve the above problems, and a first object thereof is to improve the maintainability of the detector. A second object is to prevent the cable from being pulled out from the product and avoid the inconvenience caused by the pulling out. Further, a third object is to achieve the confidentiality of the power supply / signal line connection portion at low cost.

[0008]

A motor with a rotation detector according to a first aspect of the present invention is provided with a power supply / signal output of a detector between a connector portion provided in a detector body and a connector portion provided in a motor body. The cable connection from the detector side is abolished, and both are drawn out from the cable side of the motor side.

Further, in the rotation detector-equipped motor according to the second aspect of the present invention, the detector body and the motor are directly connected by a connector, and the motor body and the device body are directly connected by the connector. The structure is such that the cable pullouts on both the device side and the motor side are eliminated.

Further, the rotation detector-equipped motor according to the third aspect of the present invention is provided with a confidential structure at the connector connection portion between the motor and the detector, and at the connector connection portion between the machine body to which the motor is attached and the motor. ..

[0011]

In the motor with rotation detector according to the first aspect of the present invention, the detector / motor power supply / signal output are connected by the respective connectors, so that the cable can be pulled out from the detector side. Is unnecessary.

In the rotation detector-equipped motor according to the second aspect of the invention, since the power supply / signal output between the detector / motor and the motor / machine main body is constituted by the connection by the connector, the rotation detector-equipped motor No need to pull out the cable from the jacket.

In the motor with rotation detector according to the third aspect of the present invention, since the packing is arranged at the connector connecting portion, the airtightness can be secured at the same time as the assembling.

[0014]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. In FIGS. 1A and 1B, 1 is a motor, 2 is a detector incorporated in the motor 1, and 11a and 11b are for connecting the power supply / signal output of the detector 2 directly to the motor 1 side. It is a connector portion composed of a plurality of electrodes. Reference numeral 10 denotes a canon connector mounting seat of the cable drawing cannon connectors 4 and 5 provided on the motor 1 side, and two kinds of drawing can be drawn on the motor 1 side and the detector 2 side.

2A and 2B show a connector portion 11
3 is a detailed explanatory view showing an embodiment of the present invention, in which 13 is a male terminal for connection, 12 is a holder made of an insulator holding the male terminal 13 for connection, and 14 is a signal lead inside the detector 2. Shows a line.

In FIGS. 3A, 3B and 4, 1
Reference numeral 7 denotes a motor-side power supply connector housing portion provided on the motor load-side flange portion, and reference numeral 20 denotes a motor-side connector provided so as to face each other by 180 °. Reference numeral 21 denotes a cable arranged between the detector / motor side connector and the motor / machine body side connector 19. Reference numeral 18 denotes a detector connector housing portion in which the detector-side connector 19 is arranged. Reference numerals 13 and 16 show an example of the male terminal shape for connection of the connector. Further, in FIGS. 2 and 4, reference numeral 15 is a packing arranged on the mating surface when the detector 2 and the motor 1 and the motor 1 and the machine body are assembled.

The detector 2 is arranged on the side opposite to the load of the motor 1 and, in order to transmit the rotation of the motor 1, is directly connected to the coupling formed on the side of the detector 2 to fit the motor 1 and the detector 2 together. In order to ensure the airtightness of the part, it is incorporated in the motor by a bolt 7 for fixing the detector via an O-ring.
For the power supply / signal output from the detector 2, the cable is not pulled out from the detector main body, and the pin side connector 11 composed of the holder 12 and the connecting male side terminal A13 is provided on the detector side.
a is arranged, the boss side connector 11b corresponding to this is arranged on the motor 1 side, and the detector 2 is assembled into the motor 1 and is automatically connected at the same time. The connection part is fixed for fixing the detector. It has a structure that also serves as the bolt 7. Further, the cable is pulled out by a structure in which the detector canon connector 4 and the motor cannon connector 5 are pulled out from the same position via the canon connector mounting seat portion 10 provided on the motor side.

Next, a second embodiment according to the present invention will be described. The mounting method of the detector 2 and the motor 1 and the detector side power supply / signal output method are the same as those of the first embodiment, but the boss side connector 11b provided on the motor 1 side is the same.
To the same detector side connector 19 as the pin side connector 11a provided in the detector 2 provided in the detector connector housing 18 provided in the motor load side flange portion via the cable 21 inside the motor. ing. Also,
The power supply of the motor 1 is also connected from the inside of the motor 1 to the motor side connector 20 arranged in the motor side power supply connector housing 17 provided on the motor load side flange portion. The power supply / signal output is configured by being provided on the machine side in advance and directly connected to the boss side connector 11b when the motor with rotation detector is assembled in the machine body. There is no cable pull out from the part.

Further, the pin side connector 11a of the detector 2, the detector side connector 19 provided on the load side flange portion of the motor 1, and the holder 12 of the motor side connector 20 are provided with packing 15 conforming to the shape of the holder. When the detector 2 and the motor 1 or the motor 1 and the machine body are assembled, the packing 15 is crushed by the mutual surfaces when the detector 2 and the motor 1 are assembled, and the function of ensuring the airtightness of the connector part from the outside is provided. ing.

In the above embodiment, the motor-side cable is pulled out by the cannon plug method, but in the case of the terminal box method, the lead-out portion of the detector cable may be housed together in the terminal box. Further, although the pin side connector is arranged on the detector side as the structure of the connector portion, the boss side connector may be arranged, and the same effect as that of the above embodiment is obtained.

Further, in the above-mentioned embodiment, the connector accommodating portions are arranged at the 180 ° facing portions of the motor load side flange portion, but they may be arranged at the same portion or at 90 ° adjacent positions, which is the same as the above-mentioned embodiment. Produce the effect of.

Further, although the square packing method is used in the above embodiment, when the connector shape is round, a commercially available O-ring may be used, and the same effect as that of the above embodiment is obtained.

[0023]

As described above, according to the motor with rotation detector of the present invention, the cable pull-out from the detector can be eliminated, the cable pull-out portion can be integrated with the motor side, and at the time of replacing the detector. It has the effect of being very easy to put on and take off.

Further, since the cable pulling out from both the detector / motor is abolished, it is easy to attach / detach when replacing the detector / motor, and since the cable pulling out part is not required, the space for the installation place is saved and the cable part is invaded. This has the effect of reducing the effect from external radio noise.

Further, in the method of arranging the packing around the connector connecting portion and tightening and fixing it, since the structure is such that the existing fastening parts are also used, there is an effect that the airtightness can be secured at a low cost and with high reliability. is there.

[Brief description of drawings]

FIG. 1 is a front view showing a configuration of a motor with a rotation detector according to the present invention.

FIG. 2 is a cross-sectional view showing a connector portion of the rotation detector-equipped motor shown in FIG.

FIG. 3 is a front view showing the configuration of another motor with rotation detector according to the present invention.

FIG. 4 is a front view showing an internal configuration of the motor with rotation detector shown in FIG.

FIG. 5 is a front view showing a configuration of a conventional motor with a rotation detector.

FIG. 6 is a sectional view showing a built-in configuration of a conventional detector and a motor.

[Explanation of symbols]

 1 Motor 2 Detector 4 Canon Connector for Detector 5 Canon Connector for Motor 7 Bolt 10 Cannon Connector Mounting Seat 11a Pin Side Connector 11b Boss Side Connector 12 Holder 13 Male Terminal for Connection A 14 Lead Wire 15 Packing 16 Male for Connection Side terminal B 17 Motor side power supply connector housing 18 Detector side connector housing 19 Detector side connector 20 Motor side connector 21 Cable

Claims (3)

[Claims] 1. A motor with a rotation detector, which is longitudinally formed in the axial direction and integrally formed, supplies power to the detector.
The signal output is directly connected between the connector part provided on the detector body and the connector part provided on the motor body, and the signal cable for the detector is simultaneously wired from the motor power cable lead-out part, and the detector is fixed in the motor. A motor with a rotation detector characterized in that the fastening and fastening of the connector portion is shared by the fastening bolts. 2. In a motor with a rotation detector, which is formed in a longitudinal direction in the axial direction and is integrally formed, power supply to the detector /
Directly connect the signal output between the connector part provided on the detector body and the connector part provided on the motor body, and arrange the detector and motor power connector parts on the motor flange to attach the motor with rotation detector. The motor with a rotation detector according to claim 1, wherein a power supply / signal line is connected at the same time when the motor with a rotation detector is assembled with a connector portion provided on the machine body side. 3. A connector connecting portion between the motor and the detector,
2. The motor with a rotation detector according to claim 1, wherein a connector connecting portion between the motor body to which the motor is attached and the motor has an airtight structure, and the entire rotation detector motor is formed into a completely sealed structure.