KR100800076B1 - Contactless connector - Google Patents

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a non-contact connector. In particular, non-contact data transmission / reception is performed by multiple channels, and there is no interference between channels, the opposing directions of optical elements are shared, and bidirectional signal transmission of multiple channels is easily performed in one stage. A non-contact connector is provided.

A non-contact connector comprising a rotating side optical element disposed on a rotating body rotating around a rotating shaft and a fixed side optical element disposed on a fixed body to transmit and receive data in a non-contact manner between the rotating side optical element and the fixed side optical element The optical element of the rotating side and the fixed optical element are provided on the disk surface of the rotating body and the disk surface of the fixed body which are substantially orthogonal to the rotation axis, and are inclined with respect to each disk surface. And an aperture configured to form an optical path inclined with respect to the rotation axis, and to pass light emitted from the rotating side optical element or the fixed side optical element between the rotating body and the fixed body. .

Non-contact connector, light emitting element, light receiving element, rotating body, fixed body

Description

Contactless connector {Contactless connector}

1 is a case where the disk-shaped optical element circuit portions are opposed to each other in the present invention;

       Side view of contactless connector,

2 is a plan view of a non-contact connector according to the present invention;

Figure 3 illustrates the power supply from the stationary to the rotating body in the present invention

       Road,

Fig. 4 shows a plurality of hollow disk-shaped optical element circuits facing each other in the present invention.

       Side view of a non-contact connector,

Fig. 5 shows a plurality of hollow disk-shaped optical element circuits facing each other in the present invention.

       Perspective view of a non-contact connector,

6 is a configuration diagram of an optical element circuit in the present invention;

Fig. 7 shows an example of data input to an optical element circuit section in the present invention.

       Degree,

Fig. 8 shows an example of data input to an optical element circuit section in the present invention.

       Degree,

9 is a diagram showing an example of an aperture in the present invention;

Fig. 10 shows an example of light rays from the light emitting element to the light receiving element in the present invention.

        Degree,

Fig. 11 is a side view of the non-contact connector when the diaphragm is provided in the present invention.

<Explanation of symbols for the main parts of the drawings>

1: rotating body 2: fixed body

10 non-contact connector 11 optical element circuit

11A: Drive Block 11B: Receive Block

111a: I / F 112a: drive circuit

113a: receiving circuit 114: multiplexer

115a: I / F 12: light emitting device

13: light receiving element 14: electric circuit part on the rotation side

15: rotation side transformer winding 21: fixed side electric circuit

22: fixed side trans winding 23: bearing

30: aperture

The present invention relates to a non-contact connector for transmitting and receiving data in a non-contact manner. Specifically, the present invention relates to a non-contact connector that provides an optical element in a cylindrical rotating body and transmits and receives data in a non-contact manner between optical elements of a fixed body.

As a conventional technique, there is a multi-channel non-contact data transmission technology for supplying electric power from a stationary body to a rotating body in a non-contact manner and without channel interference (for example, Patent Document 1 below).

[Patent Document 1] Japanese Patent Application No. 2004-116018

However, in the case of realizing bidirectional signal transmission on the rotating side and the fixed side, it is necessary to arrange the optical elements in multiple stages, and to transmit the first stage and the second stage to receive and to multi-channel. Many stages are needed. At the same time, the size of the product is increased and the mass is increased. At the same time, a mechanism, a circuit board, and an aperture for fixing the optical element must be configured exclusively on the rotating side and the fixing side.

Therefore, the present invention has been made in view of the above problems, and an object of the present invention is to provide a non-contact connector which makes common a method of fixing an optical element and easily performs multi-directional bidirectional signal transmission in one stage.

The present invention for achieving the above object is provided with a rotating side optical element disposed on a rotating body rotating around a rotating shaft, and a fixed side optical element disposed on a fixed side, wherein the rotating side optical element and the fixed side optical element A non-contact connector for transmitting and receiving data in a non-contact manner, wherein the rotating side optical element and the fixed side optical element are respectively provided on the disc surface of the rotating body and the disc surface of the fixed body which are substantially orthogonal to the rotation axis. And are provided to be inclined with respect to each of the disk surfaces, and form an optical path inclined with respect to the rotation axis, and further emit light emitted from the rotating side optical element or the fixed side optical element between the rotating body and the fixed body. It is characterized by including an aperture through which to pass. As a result, for example, it is possible to provide a non-contact connector without interfering between the channels while simultaneously performing bidirectional transmission of data by multiple channels.

In the non-contact connector, the diaphragm has a plurality of holes for transmitting the emitted light, and the width of each hole is one of the rotating side optical element and the fixed side optical element, and the other side of the light emitting element. When the light receiving element is used, it is at least as long as the interval between adjacent light receiving elements. Thereby, for example, it is possible for the light receiving element to receive the light from the light emitting element without being cut off in the middle.

The present invention is also characterized in that, in the non-contact connector, the width of the hole provided in the diaphragm is such that two light emitting elements at the shortest distance are not simultaneously output to one light receiving element. Thereby, for example, it is possible for the light receiving element to receive light from the light emitting element continuously without being cut off in the middle.

The present invention is also characterized in that, in the non-contact connector, the rotating optical element is disposed at approximately the center of the rotating shaft in the rotating body. Thereby, for example, it is possible for the light receiving element to reliably receive the light from the light emitting element.

In the non-contact connector, the present invention is characterized in that a plurality of the rotating side optical elements or the fixed side optical elements are arranged on a plurality of concentric circles having different radii around a rotating shaft. This makes it possible to transmit and receive data over multiple channels, for example.

In the non-contact connector, the present invention provides a switching means for inputting data output from a fixed side optical element, identifying which channel the data is input data, and outputting the data to an output channel corresponding to the channel. It is characterized by having. As a result, for example, even when the fixed body receives input data of a plurality of channels, it is possible to identify which channel the data is and output it to the designated wiring.

The present invention is also characterized in that, in the above non-contact connector, a trans winding is provided on both the rotating body and the fixed body to supply power in a non-contact manner from the fixed body to the rotating body by winding. Thereby, for example, it is possible to feed the rotating body in a non-contact manner.

EMBODIMENT OF THE INVENTION Hereinafter, the most preferable form for implementing this invention is demonstrated, referring drawings. 1 is a diagram showing the overall configuration of a contactless connector 10 to which the present invention is applied.

As shown in FIG. 1, the non-contact connector 10 is composed of a rotating body 1 and a fixed body 2 as a whole. The rotating body 1 is formed of a hollow shaft. The rotating body 1 rotates about the rotating shaft 4 by the rotation drive from the rotating side apparatus which is not shown in figure.

On the other hand, the stationary body 2 is positioned by the bearing 23 and is formed in a cylindrical shape so as to cover the rotor 1. The stationary body 2 and the rotating body 1 can transmit data bidirectionally and non-contact with each other.

The rotating body 1 is comprised with the optical element circuit part 11, the light emitting element 12, the light receiving element 13, the rotation side electric circuit part 14, and the rotation side trans winding 15. As shown in FIG.

The stationary body 2 consists of a bearing 23, an optical element circuit portion 11, a light emitting element 12, a light receiving element 13, a fixed side electric circuit portion 21, and a fixed side transformer winding 22. Consists of.

The optical element circuit portion 11 on the side of the rotating body 1 and the optical element circuit portion 11 on the side of the stationary body 2 use a driver and a multiplexer described later to emit light from the light emitting element 12. And identifying which channel the data received by the light receiving element 13 is, and outputs each channel to each designated wiring.

In addition, both optical element circuit portions 11 on the rotating body 1 side and the fixed body 2 side include a light emitting element 12 and a light receiving element 13. Data is transmitted from the light emitting element 12 and received by the light receiving element 13. Data is transmitted and received by contactlessness.

As shown in FIG. 1, the optical elements 12 and 13 on the rotor 1 side are arranged in the order of the light emitting element 12 and the light receiving element 13 from the rotating shaft 4 side toward the outer circumference. In the same aspect as the stationary body 2, the light emitting element 12 and the light receiving element 13 are arranged in this order. Since the optical element circuit portion 11 on the side of the rotating body 1 and the optical element circuit portion 11 on the side of the fixed body 2 are provided to be substantially parallel to each other in parallel with the rotating shaft 4, the side of the rotating body 1 The light emitting element 12 and the light emitting element 12 on the side of the stationary body 2 face each other, and the light receiving element 13 on the side of the stationary body 2 and the light receiving element 13 of the rotor 1 side also Are facing each other.

Then, the optical elements 12 and 13 on the rotating body 1 side and the optical elements 12 and 13 on the fixed body 2 side are also provided on the disk surface orthogonal to the rotation axis 4, but these The optical elements 12 and 13 are provided inclined somewhat with respect to this disk surface. Therefore, an optical path inclined with respect to the rotation axis 4 is formed in the light emitting element 12 on the rotating body 1 side and the light receiving element 13 on the fixed body 2 side. Inclined optical paths are formed in the same manner in the light receiving element 13 on the rotating body 1 side and the light emitting element 12 on the fixed body 2 side.

On the other hand, paying attention to the arrangement of the optical elements 12 and 13, the optical elements 12 and 13 on the side of the rotating body 1 and the optical elements 12 and 13 on the side of the fixing body 2 are also removed from the rotation shaft 4. The light emitting element 12 and the light receiving element 13 are arranged in the order of the outer circumference. Therefore, the arrangement of the optical elements 12 and 13 provided in the optical element circuit part 11 is the same on the rotating body 1 side and the fixing body 2 side. Therefore, it is not necessary to separately configure the optical element circuit portion 11 on the rotor 1 side and the stationary body 2 side, and it is possible to reduce the cost of the entire apparatus by making the base design common. It is possible.

The other structure of the rotating body 1 is demonstrated below.

The rotating-side electric circuit portion 14 is attached to the rotating body 1 to perform each data processing. For example, when the camera is attached to the rotating body 1 by the rotating side apparatus, the rotating electric circuit unit 14 displays the captured image in RGB (red, green, blue). Is converted into three primary color data, and if necessary, processing such as compression is performed and output to the fixed body 2. In addition, the rotation-side electric circuit unit 14 may process a control command signal such as a zoom up from the fixed side to the camera and output the same to the camera. The control signal to the camera is data received by the light receiving element 13 of the rotating body 1. In addition, although the rotating-side electric circuit part 14 is attached to the upper part of the optical element circuit part 11 on FIG. 1, it does not depend on such a form, for example, to the rotating side apparatus away from the rotating body 1, for example. It may be attached.

The rotation side trans winding 15 is provided in the outer peripheral position of the rotating body 1. The rotating side transformer winding 15 constitutes a rotating transformer with the fixed side transformer winding 22 which will be described later, and supplies electric power from the fixed body 2 to the rotating body 1. Thereby, it is also possible to operate the rotating side electric circuit part 14 and the optical element circuit part 11, and also the rotating side apparatus as needed. The electric power supply by a rotary transformer is mentioned later.

Next, the other structure of the fixed body 2 is demonstrated.

The stationary side electric circuit section 21 is mounted on the stationary body 2 and performs data processing. For example, when the image data from the rotating body 1 is compressed, the fixed-side electric circuit unit 21 decompresses the three primary color data of RGB (red, green, blue) to the fixed side motor. To the back. In addition, the fixed-side electric circuit unit 21 generates a control command signal such as zoom-up to the camera on the rotating side, and outputs it to the rotating body 1 via the optical elements 12 and 13. In addition, although the fixed side electric circuit part 21 is attached to the lower part of the optical element circuit part 11 on FIG. 1, for example, the fixed side away from the fixed body 2 is not limited to such a form. It may be attached to the apparatus.

The fixed side trans winding 22 is provided in the position which opposes the rotating side trans winding 15. The fixed side trans winding 22 supplies the electric power supplied from the fixed side apparatus to the rotating side trans winding 15 of the rotating body 1.

The bearing 23 is attached to the inner wall portion of the fixed body 2. The stationary body 2 is positioned in the position shown in FIG. 1 by this bearing 23. In addition, this bearing 23 may not be used. For example, the fixed body 2 itself is connected with the fixed side apparatus, and the fixed body 2 and the rotating body 1 are aligned.

2 is a view of the non-contact connector 10 seen from above. The rotating body 1 and the fixed body 2 which comprise the non-contact connector 10 are formed circularly, and the rotating body 1 is provided in the center side, and the fixed body 2 is provided in the outer periphery. Since the fixed body 2 is actually configured to cover the rotating body 1, when the non-contact connector 10 is viewed from above, the rotating body 1 is hidden from the fixed body 2, but is not shown for convenience of explanation. 2 is shown for the sake of brevity.

3 is a view for explaining the power supply from the fixed body 2 to the rotating body 1. The stationary side transformer winding 22 of the stationary body 2 is supplied with a power supply current from a stationary side device (not shown). Since the fixed side transformer winding 22 is wound around a core by a core, a magnetic field is generated around the core of the fixed body 2 due to the flow of current. Since this magnetic field is inherent in the core of the rotating body 1, an electric current is generated in the rotating side transformer winding 15 wound around the side of the rotating body 1 and mounted. Therefore, electric power is supplied to the rotating body 1 from the stationary side device. This electric power is supplied to the rotating-side electric circuit portion 14 and the optical element circuit portion 11. In addition, the stationary side electric circuit portion 21 and the optical element circuit portion 11 of the stationary body 2 are directly supplied with electric power from the stationary side device.

4 is a diagram illustrating a multi-channelized form of the contactless connector 10. The connector 10 shown in FIG. 4 is comprised so that the hollow shaft of the rotating body 1 may penetrate this connector 10. As shown in FIG.

The optical element circuit portion 11 on the rotating body 1 side is formed in a hollow disk shape, and its inner diameter portion is fixed to the shaft. On the other hand, the optical element circuit part 11 on the side of the fixed body 2 is also formed in a disk shape, and the outer diameter portion thereof is fixed to the side surface of the fixed body 2. Then, the fixed side optical element circuit part 11 is substantially parallel with the rotating shaft 4, and is provided facing the rotating side optical element circuit part 11.

In addition, the other components of the rotating body 1 and the fixed body 2 are the structure of the aspect substantially the same as that of FIG. However, the bearing 23 differs in that it is attached to the both ends of the fixed body 2. This is to suppress shaking and vibration of the rotating body 1. One bearing 23 may be provided if sufficient precision and strength can be maintained even in a single shaft.

Here, when the optical element circuit portion 11 is provided below the disk of the rotating body 1 as shown in FIG. 1, the number of the light emitting device 12 and the light receiving device 13 is limited by the area of the disk. Although one channel of data can be transmitted to the opposing one light emitting element 12 and one light receiving element 13, the number of channels of the handling data is also limited because the number is limited.

On the other hand, as shown in FIG. 4, the optical element circuit portion 11 is formed in a hollow disk shape, so that the number of the light emitting elements 12 and the light receiving elements 13 is increased as long as the cylindrical element is installed in multiple stages and the cylinder is made long. It is possible. Therefore, rather than making the optical element circuit portion 11 shown in FIG. 1 into a disk shape, the number of channels can be increased by making the optical element circuit portion 11 into a hollow disk shape as shown in FIG.

In recent years, since the amount of data handled by the apparatus has increased, the non-contact connector 10 also needs to be multi-channeled. Thus, the optical element circuit portion 11 is made into a hollow disk, and thus the multi-directional bidirectional data is used. Transmission can be performed easily.

5 is a perspective view of the non-contact connector 10 in a multistage configuration. However, for convenience of description, only the light emitting element 12 and the light receiving element 13 of the fixed side optical element circuit unit 11 are shown.

In the same aspect as in the case of FIG. 1, each optical element 12, 13 on the rotating body 1 side and the stationary body 2 side is directed to a disk surface of the optical element circuit portion 11 orthogonal to the rotation axis 4. It is provided to be inclined. Therefore, each optical element 12, 13 forms an optical path inclined with respect to the rotation axis 4.

The non-contact connector 10 of the multistage structure comprises the inclined optical path in two stages, and forms more optical paths of channels than the optical path shown in FIG. Of course, the multi-channel non-contact connector 10 can be further comprised if it is multistage in addition to 3 and 4 steps.

In the non-contact connector 10 having a multi-stage configuration, since the arrangement is common between the optical elements 12 and 13 on the rotating body 1 side and the optical elements 12 and 13 on the fixing body 2 side, the optical element circuit portion The rotating body 1 side and the fixing body 2 side can also be common to 11. Therefore, in the same aspect as in the case of the one-stage configuration, it is possible to reduce the cost of the non-contact connector 10. However, even if there are a plurality of stages, the optical element circuit section 11 can be common to all stages, and the effect of cost reduction becomes large.

6 is a diagram showing a specific configuration of the optical element circuit section 11. This figure shows an example in the case of performing data transmission / reception of four channels. The optical element circuit portion 11 is broadly divided into a driving block 11A of the light emitting element 12 and a receiving block 11B of the light receiving element 13.

First, the driving block 11A will be described. The drive block 11A includes four interface (I / F) circuits 111a to 111d and four drive circuits 112a to 112d.

In each of the I / F circuits 111a to 111d, data is inputted from the device side and converted into data that can be processed in the optical element circuit section 11. Since the non-contact connector 10 shown in this figure can process data for four channels, I / F 111a-111d (all four) are provided corresponding to each channel.

The driving circuits 112a to 112d are circuits for generating driving data to drive the light emitting element 12. Data output from the I / F circuits 111a to 111d is input, and generates drive data so as to correspond to the data. The driving circuits 112a to 112d also exist in the number corresponding to the number of input channels (four in total). The generated driving data is supplied to the light emitting elements 121 to 124.

The light emitting elements 121 to 124 are based on the drive data from the respective drive circuits 112a to 112d, and emit light corresponding to the drive data by photoelectric conversion or the like (four in this embodiment).

The light receiving elements 131 to 138 are light emitting elements 121 to 124 so that the light from the light emitting elements 121 to 124 can be reliably received without being cut off in the middle when the rotating body 1 is rotating. Is equal to or greater than In the case of Figure 6 is composed of eight optical elements (131 ~ 138). The light from the opposing light emitting elements 121 to 124 may be received by any of the light receiving elements 131 to 138. For example, light from the light emitting element 121 may be received by the light receiving element 131 or may be received by the light receiving element 135.

Next, the reception block 11B will be described. The receiving block 11B includes receiving circuits 113a to 113h connected to each light receiving element 131 to 138, a multiplexer 114, and interface (I / F) circuits 115a to 115d, respectively.

The receiving circuits 113a to 113h are connected to each of the light receiving elements 131 to 138, and are connected to the multiplexer 114 to receive light reception signals from the light receiving elements 131 to 138. The receiving circuits 113a to 113h convert the received signal into data that can be processed by the receiving circuit block 11B and outputs it to the multiplexer 114. In the example of FIG. 6, the receiving circuits 113a to 113h are composed of eight circuits so as to correspond to the eight light receiving elements 131 to 138.

The multiplexer 114 receives data from each of the receiving circuits 113a to 113h, and switches the input data so that the data can be supplied to the output terminal of the corresponding channel. In practice, it is composed of a plurality of logic circuits. In the example of the figure, for the non-contact connector 10 capable of transmitting and receiving data for four channels, four corresponding output stages are provided.

In the I / F circuits 115a to 115d, data supplied from the multiplexer 114 is input and converted into data that can be output to the outside. In this example, since the multiplexer 114 has four output stages, there are four interface circuits. Each of the I / F circuits 115a to 115d then outputs input data to an output terminal corresponding to the channel. In FIG. 6, data of CH-1, CH-2, CH-3, and CH-4 is output in order from the top.

The operation including each block 11A, 11B of the electric circuit section configured as described above will be described with appropriate use of FIG. 7, FIG. 8, and the like.

First, when power is supplied to the stationary side device, power is supplied to the stationary side electric circuit unit 21 and the optical element circuit unit 11 on the stationary body 2 side. Moreover, electric power is also supplied to the fixed side transformer winding 22, and electric power is supplied to the rotation side trans winding 15 of the rotating body 1 as mentioned above. As a result, the rotating side electric circuit portion 14 and the optical element circuit portion 11 mounted on the rotating side are driven.

Moreover, the rotating body 1 of the connector 10 rotates by the drive of a rotating side apparatus. For example, if the rotating device is a camera capable of rotating 360 °, the camera itself rotates to capture an image, and the rotating body 1 also rotates. Then, when data is supplied from the rotating device to the contactless connector 10, data is input to the optical element circuit section 11. Examples of data are shown in FIGS. 7 and 8.

In the example of FIG. 7, different data (eg, video and audio data) are input to channel 1 (CH-1) and channel 3 (CH-3). In addition, clock data for synchronization with the data of the channel 1 (CH-1) and the channel 3 (CH-3) is input to the channel 2 (CH-2) and the channel 4 (CH-4), respectively. In this way, different data is generated for each channel and input to the contactless connector 10. In addition, such data generation and data segmentation for each channel may be performed by the rotating-side electric circuit unit 14, or may be performed by a processing circuit not shown in the rotating-side apparatus.

Data of each channel is input to each of the driving circuits 112a to 112d via the I / F circuits 111a to 111d of the optical element circuit unit 11. Here, the driving circuit 112b into which the data of the channel 2 (CH-2) is inputted performs a process of raising the level of the data to a predetermined level (for example, twice the level) higher than the input level. . Accordingly, the multiplexer 114 can identify which data is the data of the channel 2 (CH-2) among the data received by any of the optical elements 131 to 138 of the fixture 2.

Then, from the arrangement on the disk of the rotating side optical elements (light emitting elements) 121 to 124, it is also possible to identify which channel the light received by the fixed side optical elements (light receiving elements) 131 to 138 is. For example, it is assumed that the data of the channel 2 is emitted from the light emitting element 122 and received by the light receiving element 132. At this time, the arrangement relationship of the light emitting element, for example, the light emitting element in the clockwise direction of the disk in order, the light emitting element 121 of the channel 1, the light emitting element 122 of the channel 2, the light emitting element 123 of the channel 3, When the light emitting element 124 of the channel 4 is disposed, the data received by the light receiving element 134 is the data of the channel 3, the data received by the light receiving element 136 is the data of the channel 4, and the light receiving element 138 is received. One data can be identified as data of channel 1.

In this way, by configuring the multiplexer in the logic circuit, it is possible to identify data for each channel and output the data to each channel on the corresponding output side. Of course, even if the level is set higher than the other channels for channels other than the channel 2, it is the same aspect.

Drive data for driving the rotating side optical elements 121 to 124 is supplied from the drive circuits 112a to 112d. Then, the elements 121 to 124 emit light based on the drive data, and receive light from which of the fixed side elements 131 to 138. Then, the received data is input to the multiplexer 114 via each of the receiving circuits 113a to 113h as described above, and switched to correspond to each channel, and I / F 115a to 115d from each designated output terminal. It is output to the outside via.

In the above-described example, the channel is identified by setting the data of one channel among the input data so as to be different from the data level of the other channel, and each data is determined from the arrangement of the elements 121 to 124. Recognize that the channel is data. In addition, it is possible to identify the data of each channel by the data shown in FIG. That is, by inserting data for identifying a channel at the head of data of each channel to emit light from the light emitting elements 121 to 124, the multiplexer 114 on the fixed side can identify which channel data.

As shown in Fig. 8, a two-bit identification code is added to the head of each data of each channel to emit light from the light emitting elements 121 to 124. In the same manner as in FIG. 7, the light emitted from the light emitting elements 121 to 124 is received by any one of the light receiving elements 131 to 138. Then, the data inputted to the multiplexer 114 via the reception circuits 113a to 113h identifies which channel the data received by this identification code is.

Specifically, as shown in FIG. 8, when the identification code is "00", data of the first channel, "01", data of the second channel, "10", data of the third channel, In the case of "11", the data of the fourth channel is added to the head of the data, and the multiplexer 114 outputs the output to the I / F 115a as the data of the first channel when the identification code is "00". Switch the input data so that In the same manner, the second channel is output to the I / F 115b, the third channel is the I / F 115c, and the fourth channel is output to the I / F 115d. This identification code is added to the head of the data for one clock as shown in FIG.

Such a channel identification code may be performed in a data processing circuit (not shown) of the rotating side apparatus or may be added in the rotating side electric circuit 14. In addition, each channel may be identified based on the arrangement of the light emitting elements 121 to 124 by adding one of the plurality of channels instead of adding the data to all the channels. The identification code may not be added for each clock, but may be added for each predetermined number of clocks, for example, at the head of each frame of video data.

In this way, by setting the level of data differently in only one channel or adding a channel identification code, when data of multiple channels is received from the fixed side, it is possible to identify which channel is the data and output it to a predetermined output terminal. Thus, it is possible to answer the request for multi-channelization of the contactless connector 10.

Next, the non-contact connector 10 which provided the diaphragm 30 on the optical element circuit part 11 is demonstrated. An example of the stop 30 is shown in FIG. 9. As described above, in the case where the plurality of light emitting elements 121 to 124 are provided in the optical element circuit portion 11, by the arrangement, for example, light emitted from the light emitting element 121 is one light receiving element 131. In some cases, the plurality of light receiving elements 131 to 138 may be input simultaneously. The so-called interference problem between the channels occurs, and the received optical element circuit section 11 may not be able to identify which channel the received data is. Thus, the diaphragm 30 is provided on the optical element circuit unit 11 so that the light receiving elements 131 to 138 can receive light from one light emitting element 121 to 124.

9A is a view of the diaphragm 30 viewed from above. A plurality of holes are provided along the circumference of the same radius, and light from the light emitting elements 121 to 124 is output from each hole. This is because interference between channels occurs between light receiving elements 131 to 138 existing on the same radius.

9B is a perspective view of the diaphragm 30. The stop 30 has a constant thickness but is a thickness that does not prevent rotation of the rotating body 1 and the fixed body 2.

FIG. 10: is a figure for demonstrating the light beam difference in the case where the diaphragm 30 is provided in FIG. 1 or FIG. As shown in FIG. 10A, when the diaphragm 30 is not provided, the light emitted from the light emitting element 12 is received by the three light receiving elements 13 by scattering of the light. The so-called interference problem between channels occurs. On the other hand, when the diaphragm 30 is provided as shown in FIG. 10 (B), light from the light emitting element 12 is scattered, but is reflected by the inner surface of the hole of the diaphragm 30 to condense on the light receiving element 13. . Therefore, the light from the light emitting element 12 can be reliably received by the light receiving element 13. In other words, one light receiving element 13 does not simultaneously receive other light from two light emitting elements 12.

In addition, the height of the aperture 30 (thickness of the aperture 30) may be provided by the height of the gap between the rotor 1 and the fixed body 2 so as to reflect all the light from the light emitting element 12, This may cause the rotation of the rotating body 1 to be disturbed. Since the light emitting element 12 and the light receiving element 13 are mounted in the optical element circuit portion 11, the diaphragm 30 includes the optical element circuit portion 11 of the rotating body 1 and the optical element of the fixed body 2. The thickness of the gap 1/2 or less of the circuit part 11 is preferable.

In addition, when the light receiving element 13 is located at one end of the hole by the rotation of the rotating body 1, the aperture width of the aperture 30 is separated by the other light receiving element 13 at the other end of the hole. The width may be such that is located. This is for any of the light receiving elements 13 to reliably receive the light emitted from the light emitting element 12 while the rotating body 1 is rotated.

At this time, the two light receiving elements 13 receive light from one light emitting element 12 simultaneously. However, the multiplexer 114 of the optical device circuit unit 11 selects one of the two data received at the same time, or constitutes a logic circuit composed of "OR" of the received two data, The interference problem of the liver does not appear.

In the above-described example, although the plurality of light emitting elements 12 are arranged on the circumference of the same radius, the interference problem between the channels does not occur, so it is also possible to arrange the plurality of light emitting elements 12 on the circumference of the other radius. Do.

FIG. 11 is a diagram showing an example of the overall configuration of the present non-contact connector 10 having the aperture 30. The aperture 30 on the rotor 1 side is disposed toward the lower direction in which the stationary body 2 is located, and the aperture 30 on the rotor 2 side faces the upper direction in which the rotor 1 is located. Is placed.

In the same manner as in Fig. 1 and the like, an inclined optical path is formed so that the optical element circuit portion 11 on the rotating body 1 side and the optical element circuit portion 11 on the fixed body 2 side are both optical elements 12, 13. ) Can be used in common because they are identical. In addition, since the light emitted from the light emitting element 12 by the aperture 30 is focused on the predetermined light receiving element 13, there is no problem of interference between channels due to the light received by the other light receiving element 13. .

In the example shown in FIG. 11, although the inclined optical path of one step structure is formed, you may comprise multiple steps in the same aspect as FIG. Since the optical element circuit portion 11 is common in a plurality of stages, it is possible to reduce the cost and to avoid interference problems between the channels, and furthermore, this contactless connector which can transmit and receive data by multiple channels ( 10) can be realized.

In all the above-described examples, the arrangement of the optical elements 12 and 13 is in the order of the light emitting element 12 and the light receiving element 13 from the rotational axis 4 toward the outer circumferential direction, but the reverse may of course be done. Also in this case, the same effects as in the above-described examples are produced.

The non-contact connector according to the present invention is provided with an aperture having a plurality of holes for condensing the optical paths of the optical elements disposed on the rotating body and the fixed body to condense the light from the light emitting element, and without interference between the channels. It is possible to provide a non-contact connector for performing bidirectional transmission of data in a non-contact manner.

Claims (7)

A non-contact connector comprising a rotating side optical element disposed on a rotating body rotating around a rotating shaft and a fixed side optical element disposed on a fixed body to transmit and receive data in a non-contact manner between the rotating side optical element and the fixed side optical element To; The rotating-side optical element and the fixed-side optical element are each provided on the disk surface of the rotating body orthogonal to the rotation axis and on the disk surface of the fixed body, and are inclined with respect to each disk surface, respectively. To form an inclined optical path with respect to the axis of rotation; A non-contact connector is provided between the rotating body and the fixed body to allow an aperture to pass light emitted from the rotating side optical element or the fixed side optical element. The light emitting device of claim 1, wherein the aperture has a plurality of holes for transmitting the emitted light, and the width of each of the holes is one of the rotating side optical element and the fixed side optical element. The contactless connector, characterized in that at least as long as the interval between the adjacent light receiving element. 3. The contactless connector according to claim 2, wherein the width of the hole provided in the aperture is such that two light emitting elements at the shortest distance are not simultaneously output to one light receiving element. The contactless connector according to claim 1, wherein the rotating side optical element is disposed at the center of the rotating shaft in the rotating body. The non-contact connector according to claim 1, wherein the rotating side optical element or the fixed side optical element is disposed on a plurality of concentric circles having different radii about the rotation axis. The data output from the fixed side optical element is input, and has a switching means for identifying which channel the data is input data and outputting the data to an output channel corresponding to the channel. Non-contact connector, characterized in that. The contactless connector according to claim 1, wherein a trans-winding wire is provided in both directions of the rotating body and the fixed body, and the power is supplied from the fixed body to the rotating body in a non-contact manner by the winding.

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