JP2000236461A - Electronic equipment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make an electronic equipment provided with multi-step slip rings small in size and light in weight. SOLUTION: The electronic device is provided with a rotary mechanism section 82 that is turned around a vertical shaft, a main body section 83 that is provided to an upper part of the rotary mechanism section and driven horizontally by the rotary mechanism section, a cylindrical slip ring mechanism section 91 that is provided to the center of the rotary mechanism section, and a rotary shaft 104 that is vertically penetrated through the center inside of the slip ring mechanism section 91. The upper part of the rotary shaft 104 is connected to the rotary mechanism section so as to be coincident with the turning of the main body and a lower part of the rotary shaft 104 is connected to a rotary part of a resolver 108 provided to the lower part of the slip ring mechanism section 91.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electronic device for performing various kinds of measurement, monitoring, or imaging together with rotation, indoors or outdoors.

[0002] For example, an electronic device that performs imaging while rotating as described above includes an imaging device (camera) mounted on a ship or a ship and optically detecting an infrared region of a target object day and night to perform imaging. .

FIG. 8 is a schematic external perspective view of an electronic device which is an image pickup device. The basic configuration of the electronic device 1 is that a roll shaft support mechanism 3 around a center line CL2 with both sides being coaxial on the upper side of a base portion 2 as a base, and both sides are mounted and supported by the roll shaft support mechanism 3. Ring arm 4
And a pitch axis supporting mechanism 5 around a center line CL3 which is mounted and supported on the ring arm 4 with both sides on the same axis.
And an imaging section 6 supported from both sides by a pitch axis support mechanism 5 in the ring arm 4. As described above, the imaging unit 6 is supported at the center of two axes orthogonal to the roll axis support mechanism 3 and the pitch axis support mechanism 5.

[0004] The axial direction of the center line CL2 of the roll shaft support mechanism 3 coincides with the bow direction of the ship or ship, and the axial direction of the center line CL3 of the pitch shaft support mechanism 5 is orthogonal to the bow direction. Has a function of compensating for fluctuations in the roll direction and pitch direction due to the waves and undulations on the water surface, and has a stability control mechanism for constantly maintaining and controlling the horizontal attitude of the imaging unit 6 with high accuracy. So-called spatial stability control is performed to prevent image blurring and distortion.

The imaging section 6 is assembled in an airtight state with a lower turntable 8 to which an upper dome-shaped cover 7 is attached, and is rotated 360 ° around the center line CL1 at a constant speed by a lower rotation mechanism 9. It is rotated continuously. Two infrared transmitting window plates 11 are provided on the front side of the cover 7.

Further, the imaging section 6 and the rotation mechanism section 9 need a large number of various signal lines, control lines, power supply lines, and the like. Therefore, these lines are rotated at the rotation center of the rotation mechanism section 9. Due to the need for transmission, a very large number of multi-stage slip ring mechanisms are required.

Further, a rotation angle position sensor such as a resolver or an encoder for detecting various kinds of signal information accompanying rotation such as a rotation signal and a rotation angle signal of the image pickup unit 6, a speed control and a position control, and a FOG ( It is necessary to provide sensors for detecting various signals, such as an angular velocity sensor such as a fiber optical gyro and a ring laser gyro, and a rotation counter for detecting the number of rotations. From such demands, the number of stages of the slip ring reaches 250 channels.

In addition to the above, in order to stably maintain the horizontal posture of the entire apparatus, the center of gravity including the image pickup unit 6 and the rotation mechanism unit 9 is moved to the roll axis support mechanism 3 and the pitch axis support. It is important that the central axes of CL2 and CL3 with the mechanism 5 coincide with CL1, which is the central part orthogonal to the center, as much as possible. Actually, such a design and manufacture are performed.

[0009]

2. Description of the Related Art FIG. 9 is a side sectional view of a conventional electronic device 12, but the detailed configuration of a roll shaft support mechanism 3 around a center line CL2 and the ring arm 4 corresponding to FIG. Therefore, it is omitted. The pitch axis support mechanism 5 supports the rotation mechanism 13 in a direction perpendicular to the paper surface.

Therefore, the rotation mechanism 13 and the main body 14, which is an image pickup section, are located in the space in the center of the base 2, and the following description will mainly be directed to the rotation mechanism 13.

The main body 14 is airtightly closed by a dome-shaped cover 7 that covers the turntable 8 so as to be waterproof. An outline of the configuration of the main body 14 is as follows. As shown in FIG. 8, an optical system as a camera unit that focuses infrared light from a target portion outside the apparatus that transmits and receives the infrared transmitting window plate 11 and a focusing position. A cooling-type multi-element infrared detector provided, a control mechanism for supporting them, and finely positioning the optical axis of the optical system in the vertical direction around the horizontal axis 15, and converting the infrared light into an electric signal by the infrared detector It consists of an amplifying device for amplifying the converted signal, a refrigerant circulation type cooling device or an electronic cooling device for cooling the detecting element of the infrared detector, and the like, so that the center of gravity coincides with the center of the turntable 8. It is attached.

The rotation mechanism 13 is formed of an inner and outer double cylindrical body, each of which forms a housing. An outer cylindrical body 16 is used to hermetically protect the inside from the external environment and to support a pitch axis perpendicular to the plane of the drawing. Since the whole is supported by the mechanism 5, it has a container configuration.

The inner cylindrical body 17 is supported by two upper and lower spherical bearings (grease-enclosed ball bearings) 18 and 19 with respect to the outer cylindrical body 16 and is rotatable about a vertical axis.

A turning drive motor 21 is provided at an upper position between the ball bearings 18 and 19. The fixed stator is provided on the outer cylindrical body 16, and the rotating rotor is provided on the inner cylindrical body 17. Each can be attached. The rotation speed of the inner cylindrical body 17 that is directly rotated around the center line CL1 by such a motor 21 is 60 rpm.

A resolver 22 is provided at a lower position of the lower ball bearing 19. Similarly, a fixed-side stator is provided on the outer cylindrical body 16, and a rotating-side rotor is provided on the inner cylindrical body 1.
7, respectively.

A cylindrical slip ring mechanism 23 is arranged on the same axis as the vertical axis CL1 at the center of the inner cylindrical body 17. An FOG is provided above the slip ring mechanism 23.
24 or a ring laser gyro 25 is attached,
Air guides 26 are provided in the vertical direction at intervals around the periphery.

An air cooling device 27 is attached to the lower surface of the outer cylindrical body 16, and an additional weight 28 is attached to the lower surface of the air cooling device 27. The flow of air by the air cooling device 27 is mainly for cooling the main body portion 14 on the turntable 8 and its surrounding space so as not to overheat and maintaining the temperature at a constant temperature. And air guide 26
Then, the air is cooled by suction into the air cooling device 27 and circulated and blown onto the turntable 8 through the space around the air guide 26 and the slip ring mechanism 23.

Referring to the slip ring mechanism 23, FIG. 10 shows a sectional side view of a fixed side, that is, a non-rotating side, and FIG. 11 shows a sectional side view of the rotating side in a separated state. Each of the slip ring mechanisms 23 is composed of a combination of a double slip ring and a brush.

It should be noted that in FIGS. 10 and 11, the same ball bearings are shown in both figures in an overlapping manner in order to facilitate understanding of the mutual positional relationship. In addition, the number of slip rings and brushes is smaller than the actual number, and the structure thereof is also schematically shown because the drawing is complicated.

The other parts are also shown in a schematic view in which the detailed structure is omitted in order to avoid complication. Although mounting screws and tightening screws are also shown in the figure, their description is omitted.

First, referring to FIG. 10, a power supply line, a signal line, a control line,
For example, two cables 32 and 33 for input and output are introduced. Two cylindrical bodies are attached to the cable introduction cover 31 in an upright and parallel state inside and outside of the upper board 34.

The outer cylindrical body is a first brush support 35, in which a number of first brushes 36 are mounted in tandem toward the inner surface side, and cables 32 are individually provided on the outer side.
Are connected. A cylindrical cover 37 is attached to the outer periphery of the first brush support 35, and spherical bearings 38 and 39 are provided above and below the inner side.

The inner cylindrical body is a second slip ring support 41, and a number of second slip rings 42 are mounted in multiple stages toward the outer surface side. Connected. The ball bearings 4 are also provided on the upper and lower sides of the second slip ring support 41, respectively.
3, 44 are provided.

Next, referring to FIG. 11, an input / output cable 46 such as a power supply line, a signal line, and a control line is introduced into the upper cable introduction portion from above. Although one cable 46 is shown in the figure, a plurality of cables are actually used.

Two cylindrical bodies are mounted inside and outside of the upper coupling cover 47 in parallel, and are combined so that their lower ends are coaxial.

The outer cylindrical body is a first slip ring support 48, in which a number of first slip rings 49 are mounted in multiple stages toward the outer surface side, and the wires of the cables 46 are individually provided on the inner side. Connected. A ring body 51 is attached to the lower end of the first slip ring support 48 and extends toward the lower end, and ball bearings 38 and 39 are provided above and below these outer sides.

The inner cylindrical body is a second brush support 52, on which a number of second brushes 53 are mounted in a tandem direction toward the inner surface side, and cables 46 are individually provided on the outer side.
Are connected. Ball bearings 43 and 44 are provided on the upper and lower sides of the second brush support 52, respectively.

FIG. 12 is a side sectional view showing a state where the slip ring separators of FIGS. 10 and 11 are combined. FIG.
2, the respective ball bearings 38, 39 and 43,
It can be easily understood that the position 44 is the same as that described above, without having to dare to explain.

As apparent from FIG. 12, in the assembled and assembled state, the first brush 36 of the first brush support 35 on the fixed side is the first brush 36 on the rotating side.
First slip ring 4 of the slip ring support 48 of FIG.
9 is in contact. Further, the second slip ring 42 of the fixed second slip ring support 41 is in contact with the second brush 53 of the second brush support 52 on the rotating side.

As described above, each of the first and second
Of the first and second slip rings 4
As a result, electric signals and power are transmitted and received by pressure contact with each of the cables 9 and 42, so that the cables 32 and 33 on the fixed side are connected to the cables 46 on the rotating side. Such a positional relationship is defined by each of the ball bearings 3
Accurate positioning by 8, 39, 43, 44 ensures long-term reliability.

The first and second brushes 36 and 53 have mechanisms for pressing the first and second slip rings 49 and 42, respectively, but this pressing mechanism is not shown.

Referring again to FIG. 9, the fixed side of the slip ring mechanism 23 shown in FIG. 10 is supported and fixed so that the lower portion is supported by the outer cylindrical body 16 which is the non-rotating side of the rotation mechanism 13. Has become.

The rotation side of the slip ring mechanism 23 shown in FIG. 11 is configured so that the upper portion is connected and fixed to the inner cylindrical body 17 which is the rotation side of the rotation mechanism 13. Match rotation. Because of this, by attaching the FOG 24 or the ring laser gyro 25 to the upper part on the rotating side shown in FIG.
A required signal can be obtained by the same rotation.

In FIG. 9, the upper end surface of the outer cylindrical body 16 on the fixed side and the lower surface of the turntable 8 on the rotating side opposite to this end surface are filled with moisture from the outside. In order to prevent this, a rubber seal ring (not shown) is provided so as to be in contact with and is protected.

FIG. 13 shows an electronic device 55 different from that shown in FIG. 9, but the main body 14 is the same as that shown in FIG. 9 and the structure of the rotation mechanism 56 is different. Only 56 is shown in the side sectional view. The same applies to the base portion 2, the roll shaft support mechanism 3, the ring arm 4, the pitch shaft support mechanism 5, and the like, so that they are not shown.

The center lines CL2 and CL3 of the roll shaft support mechanism 3 and the pitch shaft support mechanism 5 are set at the positions shown in the figure.

The cylindrical fixed housing 57 and the cylindrical rotating housing 58 positioned so as to cover the outside and the upper part thereof.
The rotation-side housing 58 is moved relative to the fixed-side housing 57 by the center line C by the spherical bearings 59 and 61 arranged vertically.
It is rotatably connected and supported around L1.

Between the ball bearings 59 and 61, the stator side of the motor 62 is mounted around the outer periphery of the fixed housing 57, and the rotor side of the motor 62 is mounted around the inner surface of the rotating housing 58.

A rubber-made seal ring 64 attached to the lower end surface of the rotating housing 58 is in contact with the flange-shaped overhanging portion 63 on the lower outside of the fixed housing 57, so that moisture from the outside is protected from the inside. Protected from entering.

A connector mounting plate 67 is attached to the lower surface of the fixed housing 57 via a board 65 and a spacing ring 66 via a spacing ring 66, and the periphery of the spacing ring 66 is covered by a cover plate 68. I have. A waterproof connector 69 is attached to the connector attachment plate 67, and a ring-shaped additional weight 71 is attached to the periphery.

Above the rotary housing 58, there is a wide disk-shaped main body mounting surface 72, on which the electronic device 12 (not shown) described with reference to FIG. 9 is mounted. Is attached.

At the center of the substrate 65, a fixed lower end of the slip ring mechanism 23 described with reference to FIGS. 10 to 12 is fixedly mounted in a non-rotating state. It is configured to be rotatable by being coupled to a mounting bracket 73 mounted so as to cover the upper side of 58. The mounting bracket 73 has a gear 74 formed around the upper portion of the slip ring mechanism 23.

A shelf-like partition plate 75 is formed at an intermediate portion inside the fixed-side housing 57, and an encoder 76 or a rotation counter 77 is mounted thereon. These are provided with a gear 78 meshing with a gear 74 of a mounting bracket 73. They are connected by a shaft coupling.

The gear 78 has a well-known backlash-less mechanism including two gears and a spring for applying a torsional force between the two gears, and accurate rotation transmission is performed. The gear ratio between the gears 74 and 78 is 1: 1.

As described above, since the encoder 76 or the rotation counter 77 is mounted at a position deviated from the center of the fixed housing 57, the center CL1 is attached to the partition plate 75.
The balance weight 79 is attached to a position opposite to the symmetrical position so as to obtain an overall equilibrium state.

The inside of the connector 69 mounted on the lower connector mounting plate 67 and the slip ring mechanism 2
3, electrical wiring (not shown) is provided, and wiring is also provided on the upper rotating side of the slip ring mechanism 23 as described above.

According to the electronic device 55 shown in FIG. 13, compared to the electronic device 12 shown in FIG.
In the case of, the motor 62 and the resolver 22 are provided in the vertical direction in series, as compared with the motor 62 alone, and the encoder 76 or the rotation counter 77 is provided in a position parallel to the slip ring mechanism 23 so that the motor 21 and the resolver 22 are provided in the vertical direction. Can be reduced, but the horizontal diameter increases.

The position of the motor 62 is set at the center lines CL2 and CL3.
In this case, the balance in the vertical direction due to the weight of the motor 62 also works favorably.

As described above, the combination of various sensors with the electronic device will be described below.
4 is to detect and use various kinds of information associated with rotation, and to stably maintain and control the state of rotation.

Since the FOG 24 or the ring laser gyro 25 is an angular velocity sensor for maintaining and controlling the rotation speed in the target direction at a constant value, the rotation axis CL
It is necessary to attach to the center of rotation on 1 above. Therefore, the slip ring mechanism 23 is mounted on the upper side or the lower side, but the rotating part of the slip ring mechanism 23 is mounted on the upper side only for the upper side.

The resolver 22 or the encoder 76
Since the rotation is controlled by the angle signal from these, the main body is fixed to the non-rotating part, and the rotating side is connected to the rotating part and rotated to obtain the signal. The configuration is as shown.

The rotation counter 77 detects the cumulative number of rotations of the rotation operation and determines the maintenance time in order to perform maintenance for guaranteeing the reliability of the multi-channel slip ring mechanism 23. Therefore, a configuration as shown in FIG. 13 is obtained.

[0053]

According to the conventional electronic device 12 shown in FIG. 9, since the camera unit of the main unit 14 and the electronic devices mounted around the camera unit are very heavy, the lower end of the rotation mechanism unit 13 is not provided. In addition to making the air cooling device 27 heavier, an additional weight 28 was further mounted below the support fulcrum, which is a position orthogonal to the center lines CL2 and CL3, which is the farthest end. The lower resolver 22 is mounted on the lower side to obtain the balance of the whole. For these reasons, the size of the electronic device itself has increased, and an increase in weight has been unavoidable.

On the other hand, in order to use the electronic device 12 as a monitoring device for the surroundings of a ship, the electronic device 12 is installed not on a bridge but on a high position such as a mast so that a farther distance can be seen (extended detection distance). Is required. To meet such demands, it is essential to reduce the size and weight of the electronic device. However, there is a problem that the above-described conventional electronic device 12 cannot meet such demands.

Recently, due to the demand for downsizing of the electronic device, it has become possible to reduce the size of the camera section and the electronic equipment mounted around the camera section by improving the performance of electronic components and the like and to reduce the weight by high-density mounting. This has made it possible to reduce the size and weight of the rotation mechanism.

From the above, it has been found that the large resolver 22 which also served as the balance weight can function sufficiently even if it is small.

The FOG 24 or the ring laser gyro 25 attached to the upper rotating part of the slip ring mechanism 23 has the main body 14 mounted on the upper side, so that the whole must be disassembled for maintenance such as inspection. There was a problem that it was difficult and difficult.

If these parts can be attached by providing a rotating part at the non-rotating part below the slip ring mechanism part 23, the weight of the upper part can be reduced and the weight of the lower part can be added accordingly. Therefore, the additional weight 28 can be reduced, and the weight of the electronic device itself and the maintainability can be improved.

According to the electronic device 55 shown in FIG. 13, the space stabilization control is performed in order to eliminate the image blur and the distortion due to the fluctuation of the ship, but it is necessary to set the center of gravity at the center of the three orthogonal rotation axes. From the rotation center CL as much as possible
The unbalanced weight deviating from 1 is reduced.

Therefore, as described above, it is necessary to provide an additional weight 71 at the lower end to compensate for the lower balance due to the heavy weight of the upper main body 14.

In order to reduce the size by reducing the height of the rotation mechanism 56, the encoder 76 and the rotation counter 77 are mounted so as to be deviated from the rotation center CL1. For this reason, the weight including the transmission mechanism such as the mounting bracket and the gear, and the addition of the balance weight 79 for balancing the imbalance increase the weight and increase the diameter direction. .

SUMMARY OF THE INVENTION In view of the above-described various problems in the related art, it is an object of the present invention to reduce the size and weight of an electronic device including a multi-stage slip ring mechanism.

[0063]

Means for Solving the Problems The first means of the present invention for solving the above problems includes a rotating mechanism capable of rotating about a vertical axis, and a rotating mechanism of the rotating mechanism. A main body portion provided at the upper portion and horizontally rotated by the rotation mechanism portion, a cylindrical slip ring mechanism portion provided at the center of the rotation mechanism portion, and a rotating shaft vertically penetrating the inside of the center of the slip ring mechanism portion An electronic device having an upper portion of the rotating shaft connected to the rotating mechanism so that the upper portion of the rotating shaft coincides with the rotation of the main body, and a rotating shaft connected to a rotating portion of a sensor provided at a lower portion of the lower slip ring mechanism. It is.

According to the first means, since the lower side of the slip ring mechanism is the non-rotating part, the rotating shaft penetrating from the upper rotating part of the slip ring mechanism rotates to the lower non-rotating part. Since the shaft is provided, the mounting portion of the sensor can be mounted below the slip ring mechanism, and the rotating shaft can be connected to the rotating portion of the sensor.

Since the sensor mounted in this manner is coaxial with the center axis of the slip ring mechanism, it does not deviate from the center of the rotation mechanism, and therefore, does not lose weight around the rotation axis of the electronic device. There is no equilibrium.

By reducing the size of the sensor itself,
By directly connecting the rotating part of the sensor to the rotating shaft, an electronic device can be reduced in size and weight without requiring an attached transmission mechanism.

The second means of the present invention comprises a rotating mechanism which is rotatable about a vertical axis, a main body provided above the rotating mechanism and rotated in the horizontal direction by the rotating mechanism, and a rotating mechanism. A cylindrical slip ring mechanism provided at the center of the section, and a hollow rotary shaft penetrating vertically through the center of the slip ring mechanism, and the upper portion of the rotary shaft coincides with the rotation of the main body. The electronic device is connected to the rotation mechanism and the lower part of the rotation shaft is connected to the rotation part of the rotation sensor provided at the lower part of the slip ring mechanism, and the signal line of the rotation sensor is inserted through the inside of the rotation shaft. .

According to the second means, since the lower side of the slip ring mechanism is the non-rotating part, the hollow rotary shaft penetrating from the upper rotary part of the slip ring mechanism is connected to the non-rotating part on the lower surface. Since the rotation shaft is provided, the sensor mounting portion can be mounted below the slip ring mechanism, and the rotation shaft can be connected to the rotation portion of the sensor.

Since the mounted sensor is coaxial with the central axis of the slip ring mechanism, it does not deviate from the center of the rotation mechanism, and therefore does not cause weight imbalance around the rotation axis of the electronic device. .

By reducing the size of the sensor itself,
By directly connecting the rotating portion of the sensor to the rotating shaft, the electronic device can be reduced in size and weight without requiring an attached transmission mechanism. By passing the signal line of the sensor through the hollow inside of the rotating shaft, it is possible to reach the upper main body.

A third means of the constitution of the present invention is an electronic device in which the main body in the first means or the second means has an infrared imaging section.

According to the third means, the transmission of many signals by the multi-stage slip ring mechanism, the transmission of many control circuits and the like between the base side and the rotation side can be performed, and various sensors can be used. Since it is possible to install the system including selection, setting, and combination, it is possible to obtain high-accuracy infrared images by stabilizing attitude control and rotation speed control, and to achieve both miniaturization and weight reduction. Because of this, it is possible to obtain a preferable device that can be installed at a high position to obtain a reliable infrared image and information of various measurement values that reach a long distance.

[0073]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an electronic device according to the present invention will be described.
Specific embodiments will be described in detail with reference to the drawings according to an embodiment based on the configuration summary. Note that the same parts are denoted by the same reference numerals throughout the drawings for easy understanding.

FIG. 1 is a front sectional view of the electronic device 81 of the present invention, and FIG. 2 is a side sectional view. FIG. 1 shows a ring arm 4 corresponding to FIG. 8 and a center line CL3 coupled thereto.
Only the essential parts of the surrounding pitch axis support mechanism 5 are shown, and the detailed configuration is not shown. The roll shaft support mechanism 3 supports the ring arm 4 in a direction perpendicular to the plane of the drawing, and the base 2 is shown below the drawing. In FIG. 2, the detailed configuration of the roll shaft support mechanism 3 around the center line CL2 and the ring arm 4 are omitted for simplicity.

Therefore, the rotation mechanism 82 and the main body 83 serving as the image pickup unit are located in the space at the center of the base 2, and the following description will mainly be directed to the rotation mechanism 82.

The main body 83 is airtightly closed by a dome-shaped cover 7 that covers the turntable 8 so as to be waterproof. An outline of the structure of the main body 83 is as follows. An optical system as a camera unit for focusing infrared rays from a target part outside the apparatus, which is transmitted through the infrared ray transmitting window plate 11 as shown in FIG. A cooling type multi-element infrared detector, a control mechanism that supports them and finely positions the optical axis of the optical system in the vertical direction around the horizontal axis 15, and converts the infrared light into an electric signal by the infrared detector Amplifying device for amplifying the obtained signal,
It is composed of a cooling device of a refrigerant circulation type or an electronic cooling device for cooling the detection element of the infrared detector, and is mounted on the center of the turntable 8 so that the position of the center of gravity coincides.

The main body 83 is smaller and lighter than the conventional main body 14 described with reference to FIG.

As is clear from the front view of FIG. 1, two sets of the infrared imaging section, which is the main body section 83, are provided in parallel. Since there are two infrared transmission window plates 11 in FIG. 8, two infrared bands having different wavelength bands can be detected respectively.

The rotation mechanism 82 is composed of an inner and outer double cylinder, each of which constitutes a housing. An outer cylinder 84 is used to seal and protect the inside from the external environment and to support a pitch axis around the center line CL3. Since the whole is supported by the mechanism 5, it has a container configuration.

The inner cylindrical body 85 is supported by the upper and lower two spherical bearings 86 and 87 with respect to the outer cylindrical body 84, and is rotatable about a vertical axis.

A rotating drive motor 88 is provided at a lower position between the spherical bearings 86 and 87. The stator on the fixed side is provided on the outer cylindrical body 84, and the rotating rotor is provided on the inner cylindrical body 85. , Respectively attached. The rotation speed of the inner cylindrical body 85 that is directly rotated around the center line CL1 by such a motor 88 is 60 rpm.

A cylindrical slip ring mechanism 91 is arranged on the same axis as the vertical axis CL1 at the center of the inner cylindrical body 85. An FOG 24 or a ring laser gyro 25 is attached to a rotating portion above the slip ring mechanism 91.

The lower fixed portion of the slip ring mechanism 91 is fixedly mounted on a disk-shaped mounting plate 92 mounted on an external cylindrical body 84, and a resolver is provided below the fixed portion. The detailed configuration will be described later.

The rotating part at the upper part of the slip ring mechanism part 91 is attached and connected to a disk-shaped attachment plate 93 provided on the inner cylindrical body 85. Although not shown, air holes for air are formed around these mounting plates 92 and 93 in plan view.

An air cooling device 27 is attached to the lower surface of the outer cylindrical body 84, and an additional weight 28 is attached to the lower surface of the air cooling device 27. On the upper side of the air cooling device 27, as shown in FIG. 1, a blower 94 is provided on both sides of the slip ring mechanism 91, and an air guide plate surrounding both sides of the blower 94 as shown in FIG. 95 are provided.

The flow of air by the air cooling device 27 is mainly for cooling the main body 83 on the turntable 8 and its surrounding space so as not to overheat and for maintaining the internal air at a constant temperature. Cylindrical body 8
4 and the air cooling device 27 between the inner cylindrical body 85
The air is cooled by suction, and is sent out by a blower 94 so as to be circulated and blown onto the turntable 8 through the space between the air guide plates 95 facing each other and between the internal cylindrical body 85 and the slip ring mechanism 91.

The slip ring mechanism 91 will be described. FIG. 3 is a sectional side view of the fixed side, ie, the non-rotating side, and FIG. 4 is a side sectional view of the rotating side in a separated state. Each of the slip ring mechanisms 91 is composed of a combination of a double slip ring and a brush.

In FIGS. 3 and 4, the same ball bearings are shown in both figures in an overlapping manner in order to facilitate understanding of the mutual positional relationship. Because it becomes complicated for illustration,
Also in this slip ring mechanism section 91, the number of slip rings and brushes is shown smaller than the actual number, and the structure is also schematically shown.

The other parts are similarly omitted from the detailed structure and are schematically shown. Although attachment screws and tightening screws are shown in the figure, their description is omitted.

First, referring to FIG. 3, a sensor mounting bracket 96, which is also a lower cable introduction cover, is provided, and two external input / output lines such as a power supply line, a signal line, and a control line are provided on the side surface. Cables 32 and 33 are introduced.

The upper substrate 34 of the sensor mounting bracket 96
Two cylindrical bodies are mounted on the upper and lower sides in parallel. The outer cylindrical body is a first brush support 35, and a number of first brushes 36 are attached in a column direction toward the inner surface side, and the electric wires of the cables 32 are individually connected on the outer side. A cylindrical cover 37 is attached to the outer periphery of the first brush support 35, and spherical bearings 38 and 39 are provided on the inner upper and lower sides, respectively.

The inner cylindrical body is a second slip ring support 97, in which a number of second slip rings 42 are mounted in multiple stages toward the outside, and the wires of the cable 33 are individually connected on the inner side. Is done. The ball bearings 43 on the upper and lower sides of the second slip ring support 97,
44 are provided.

A protection tube 98 is provided upright at the center of the inside of the sensor mounting bracket 96, and its upper end is fitted into a through hole at the upper end of the second slip ring support 97 and communicates with the opening. ing.

A ball bearing 99 is fitted in the center of the sensor mounting bracket 96, and the outer ring is held and fixed. Further below, an encoder 76 or a rotation counter 77
And the center of the rotating shaft 101 of the rotor is positioned and attached so as to coincide with the center of the ball bearing 99.

Next, referring to FIG. 4, an input / output cable 46 such as a power supply line, a signal line, and a control line is introduced into the upper cable introduction section from above. In the figure, the cable 46
Is shown as a single line, but there are actually a plurality of lines.

Two cylindrical bodies are attached to the upper connecting cover 102 inside and outside in parallel, and are combined so that their lower ends are coaxial.

The outer cylindrical body is a first slip ring support 48, in which a number of first slip rings 49 are mounted in multiple stages toward the outer surface, and the wires of the cables 46 are individually provided on the inner side. Connected.

A ring 51 is attached to the lower end of the first slip ring support 48 and extends in the direction of the lower end. Ball bearings 38 and 39 are provided above and below these outer sides.

The inner cylindrical body is a second brush support 52, in which a number of second brushes 53 are attached in a tandem direction toward the inner surface side, and cables 46 are individually provided on the outer side.
Are connected. Ball bearings 43 and 44 are provided on the upper and lower sides of the second brush support 52, respectively.

A coupling member 103 is attached to the center of the upper coupling cover 102, and the upper end of a rotating shaft 104 penetrating the center of the coupling member 103 is fitted into the coupling member 103, and is fixed by a clamping ring 105. Have been.

The upper part of the fitting 103 is a thin cylindrical shape. A plurality of slits (slits) are formed in the cylindrical portion in the axial direction, and the fastening ring 105 is a C-shaped ring in plan view. By tightening the notch groove with a tightening screw (not shown) so as to reduce the diameter direction, the cylindrical portion of the fitting 103 can be integrally fixed to the rotating shaft 104 by tightening.

Alternatively, the outer periphery of a similar cylindrical portion of the joint fitting 103 may be formed as a tapered screw, and the inner surface of the tightening ring 104 may be formed as a taper nut.

At the lower end of the rotating shaft 104, a ball bearing 99 is provided.
A bearing holding portion 106 for fitting and holding and fixing the inner ring of the bearing is provided with a shaft joint 107 at the end thereof.

FIG. 5 is a side sectional view showing a state in which the slip ring separators of FIGS. 3 and 4 are combined. In FIG. 5, it can be easily understood from the foregoing that the respective ball bearings 38, 39 and 43, and 44 and 99 are located at the same position.

As is apparent from FIG. 5, the assembled state of the first brush 36 of the first brush support 35 on the fixed side is the first slip ring support 48 on the rotating side. Is in contact with the first slip ring 49. Further, the second slip ring 42 of the fixed second slip ring support 97 is in contact with the second brush 53 of the rotating second brush support 52.

As described above, the first and second brushes 36 and 53 are provided with the first and second slip rings 49 and 4 respectively.
As a result, electric signals and power are transmitted and received by reliable contact with each other by pressing and contacting each other, so that the fixed-side cables 32 and 33 and the rotating-side cable 46 are connected. Such a positional relationship is achieved by the ball bearings 38, 3 respectively.
Accurate positioning by 9, 43, 44 ensures long-term reliability.

The first and second brushes 36 and 53 have a configuration in which they are pressed against the first and second slip rings 49 and 42, respectively, but this pressing configuration is not shown.

The rotation shaft 101 of the encoder 76 or the rotation counter 77 at the center of the rotation counter 77 mounted on the sensor mounting bracket 96 is connected to and coupled to a shaft joint 107 at the lower end of the rotation shaft 104 to form a slip ring mechanism 91.
And the same rotation is performed.

Referring to FIGS. 1 and 2, the fixed side of the slip ring mechanism 91 shown in FIG. 3 is attached to the non-rotatable external cylindrical body 84 of the rotation mechanism 82 by a mounting plate 92. It is supported and fixed.

The rotation side of the slip ring mechanism section 91 shown in FIG. 4 is configured such that the upper portion is supported and fixed by the mounting plate 93 to the inner cylindrical body 85 on the rotation side of the rotation mechanism section 82. The rotation coincides with the rotation of the main body 83. As a result, a necessary signal can be obtained from the encoder 76 or the rotation counter 77 shown in FIG.

Also in FIGS. 1 and 2, the upper end surface of the outer cylindrical body 84, which is the fixed side, and the lower surface of the turntable 8, which is the rotating side opposite to this end surface, have moisture from the outside interposed therebetween. Although not shown, a rubber seal ring (not shown) is provided so as to be in contact with and is protected so as to be in contact with the seal ring.

The embodiment shown in FIG. 6 is the same as the sectional side view of the slip ring mechanism shown in FIG. 5, except that a resolver 108 is used instead of the encoder 76 or the rotation counter 77 as a sensor. It is sectional drawing and has shown only the lower principal part of the slip ring mechanism part 91.
In the following embodiments, the same parts as in FIGS. 3 to 5 will be described with the same reference numerals, even if they have different configurations, in order to facilitate understanding.

According to this embodiment, the stator 10 of the resolver 108 is provided inside the lower portion of the sensor mounting bracket 96.
9 is fitted and attached in a fixed state.
The rotor 111 of the resolver 108 is fitted around the lower part of the connector 6 and fixedly attached.

The rotating shaft 104 is a hollow tubular rotating shaft penetrating vertically through the center, so that the rotor 11
The lead wire 112 of the first coil is passed through the hollow interior of the rotating shaft 104 to form the upper main body 83 on the rotating side.
Can lead to Reference numeral 113 denotes the stator 1
This is the lead wire on the 09 side.

1 and 2, the flat and small resolver 108 can be attached to the lower portion of the slip ring mechanism 91, and penetrates the inside of the slip ring mechanism 91. By causing the rotation to be the same as that of the main body 83 by the rotation shaft 104, the deviation of the position of the center of gravity can be eliminated and the size and weight of the electronic device 81 can be reduced.

In addition, a resolver 108, a sensor such as an encoder 76, a rotation counter 77, etc. are provided below the slip ring mechanism 91, which cannot be achieved by the conventional structure, and a FOG 24 or a ring laser gyro 25, etc. Can be provided at the top.

The embodiment of FIG. 7 is the same as the sectional side view of the slip ring mechanism shown in FIG. 5, except that the encoder 76 or the rotation counter 77 as a sensor is replaced by an F
FIG. 3 is a side sectional view of the OG 24 or the ring laser gyro 25, showing only a main part below a slip ring mechanism 91; Similarly, the same parts as those in FIGS.

According to this embodiment, a large-diameter ball bearing 99 is mounted on the sensor mounting bracket 96 to stabilize the rotation posture. Therefore, the bearing holding unit 10
The diameter of 6 is also large, and the FOG 24 or the ring laser gyro 25 can be selectively attached to its lower surface, and the whole can be rotated.

The rotary shaft 104 is a hollow tube penetrating vertically through the center, and a signal cable 114 such as an optical fiber is used.
Can be guided through the hollow interior of the rotating shaft 104 to the upper main body 83 on the rotating side.

With this configuration, the FOG 24 can be opened by opening the lower part of the rotating mechanism 82 without disassembling and separating the rotating mechanism 82 and the main body 83.
Alternatively, inspection, maintenance, and the like of the ring laser gyro 25 can be performed.

As described above, the present invention is preferably applicable to an infrared imaging device, but is not limited thereto, and is not limited to an imaging device in the visible region, other measuring devices, observation devices, and optical devices. It is needless to say that what is applicable to such a radio wave device is included.

[0122]

As described in detail above, according to the electronic device of the present invention, a rotating mechanism that can rotate around a vertical axis, a main body that is horizontally rotated by the rotating mechanism at the top,
It has a cylindrical multi-stage slip ring mechanism provided at the center of the rotating mechanism, and a rotating shaft penetrating vertically through the center of the slip ring mechanism, and the upper part of the rotating shaft coincides with the rotation of the main body. The lower portion of the slip ring mechanism is a non-rotating portion by connecting the rotary shaft to the rotating portion of a sensor provided below the slip ring mechanism at the lower portion. Therefore, the rotating shaft extends to the non-rotating portion below the rotating shaft that penetrates from the upper rotating portion.

Thus, it is possible to mount the sensor mounting portion below the slip ring mechanism and connect the rotating shaft to the rotating portion of the sensor. The sensor mounted in this manner is coaxial with the center axis of the slip ring mechanism, and does not deviate from the center of the rotation mechanism. Therefore, the weight does not become unbalanced around the rotation axis of the electronic device.

By reducing the size of the sensor, it is possible to achieve both miniaturization and weight reduction of the electronic device without requiring a conventional rotation transmission mechanism.

Further, by making the rotary shaft a hollow rotary shaft, a signal line or the like of a rotary sensor provided below the slip ring mechanism can be inserted through the hollow inside of the rotary shaft. This signal line or the like may be guided to the upper body.

By using the infrared imaging section as the main body, transmission of various signals by the multi-stage slip ring mechanism can be transmitted and received between the base section and the rotating side.
Various sensors can be selected and set, and the combination of sensors is also flexible, enabling attitude control and high-stability control of rotational speed.
Highly accurate and highly reliable infrared information can be obtained. It is very suitable as an infrared observation device because it can be installed at high places because it is small, lightweight and excellent in weight balance.

In addition, since a large resolver is conventionally mounted below the center of rotation as a small resolver, the rotary drive motor can be positioned below and the additional weight for adjusting the weight balance can be reduced in weight. .

The air flow path for cooling the inside and the surroundings of the main body is not affected by the conventional resolver, and although a motor is interposed between the outer cylindrical body and the inner cylindrical body, a sufficient flow is provided. Since the air passage was secured, the air can be circulated efficiently.

The sensors can be selected and combined in accordance with various controls and signal processing. Therefore, in response to such demands, an angle sensor, an angular velocity sensor, a rotational speed count sensor, and other various sensors are provided. Can be adopted.

As described above, according to the electronic device of the present invention, its practical effect is extremely remarkable when applied to various observation and monitoring devices such as optical and radio wave devices. In the above, an excellent effect is achieved.

[Brief description of the drawings]

FIG. 1 is a front cross-sectional view of an electronic device according to the present invention.

FIG. 2 is a side sectional view of the electronic device of the present invention.

FIG. 3 is a side sectional view (part 1) of a separated state for explaining a slip ring mechanism of the electronic device of the present invention.

FIG. 4 is a side sectional view (part 2) of a separated state for explaining a slip ring mechanism of the electronic device of the present invention.

FIG. 5 is a side sectional view of a slip ring mechanism of the electronic device of the present invention.

FIG. 6 is a sectional side view (part 1) of a main part of a slip ring mechanism of the electronic device of the present invention.

FIG. 7 is a sectional side view (part 2) of a main part of a slip ring mechanism of the electronic device of the present invention.

FIG. 8 is an external perspective view of an electronic device according to the invention.

FIG. 9 is a side sectional view of a conventional electronic device.

FIG. 10 is a side sectional view (part 1) of a separated state for explaining a conventional slip ring mechanism.

FIG. 11 is a side sectional view (part 2) of a separated state for explanation of a conventional slip ring mechanism.

FIG. 12 is a side sectional view of a conventional slip ring mechanism.

FIG. 13 is a side sectional view of a rotation mechanism of a conventional electronic device different from FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Electronic device 2 Base part 3 Roll axis support mechanism 4 Ring arm 5 Pitch axis support mechanism 6 Image pick-up part 7 Cover 8 Turntable 9 Rotation mechanism part 11 Infrared transmission window panel 12 Electronic device 13 Rotation mechanism part 14 Main body part 15 Axis 16 External Cylindrical body 17 inside cylindrical body 18, 19 spherical bearing 21 motor 22 resolver 23 slip ring mechanism part 24 FOG 25 ring laser gyro 26 air guide 27 air cooling device 28 additional weight 31 cable introduction cover 32, 33 cable 34 board 35 1 brush support 36 first brush 37 cylindrical cover 38, 39 ball bearing 41 second slip ring support 42 second slip ring 43, 44 ball bearing 46 cable 47 coupling cover 48 first slip Ring support 49 Pulling 51 Ring body 52 Second brush support 53 Second brush 55 Electronic device 56 Rotating mechanism 57 Fixed housing 58 Rotating housing 59, 61 Ball bearing 62 Motor 63 Overhang 64 Seal ring 65 Substrate 66 Interval Ring 67 Connector mounting plate 68 Cover plate 69 Waterproof connector 71 Additional weight 72 Main body mounting surface 73 Mounting bracket 74 Gear 75 Partition plate 76 Encoder 77 Rotation counter 78 Gear 79 Balance weight 81 Electronic device 82 Rotating mechanism unit 83 Main unit 84 External cylinder Body 85 Cylindrical body inside 86, 87 Ball bearing 88 Motor 91 Slip ring mechanism 92, 93 Mounting plate 94 Blower 95 Air guide plate 96 Sensor mounting bracket 97 Second slip ring support 98 Protection tube 99 Ball bearing Reference Signs List 101 Rotary shaft of rotor 102 Coupling cover 103 Coupling fitting 104 Rotary shaft 105 Fastening ring 106 Bearing holding unit 107 Shaft coupling 108 Resolver 109 Stator 111 Rotor 112, 113 Lead wire 114 Signal cable

Claims (3)

[Claims] A rotating mechanism capable of rotating about a vertical axis;
A main body portion provided above the rotation mechanism portion and horizontally rotated by the rotation mechanism portion, a cylindrical slip ring mechanism portion provided at a center portion of the rotation mechanism portion, and a center inside the slip ring mechanism portion. A rotation shaft that penetrates up and down, wherein an upper portion of the rotation shaft is connected to a rotation mechanism so that the rotation of the body coincides with the rotation of the main body, and a lower portion of the rotation shaft is provided at a lower portion of the slip ring mechanism. An electronic device, wherein the electronic device is connected to a rotating unit. 2. A rotating mechanism capable of rotating about a vertical axis;
A main body portion provided above the rotation mechanism portion and horizontally rotated by the rotation mechanism portion, a cylindrical slip ring mechanism portion provided at a center portion of the rotation mechanism portion, and a center inside the slip ring mechanism portion. A hollow rotating shaft penetrating up and down, the upper portion of the rotating shaft being connected to the rotating mechanism so as to coincide with the rotation of the main body, and the lower portion of the rotating shaft being provided at the lower portion of the slip ring mechanism. An electronic device, wherein the electronic device is connected to a rotating part of a sensor and a signal line of the rotating sensor is inserted through a rotation shaft. 3. The electronic device according to claim 1, wherein the main body is an infrared imaging unit.