JP2002075760A - Rotary- and non-rotary type noncontact connectors - Google Patents

Abstract

PROBLEM TO BE SOLVED: To receive power supply, and at the same time to transmit data by a light element, without contacts by combining a rotary or stationary transformer with the coupling means of the light element. SOLUTION: This rotary-type noncontact connector has a rotary transformer 1, a light-emitting device 8 provided in a rotor 3 or a photodetector, and a light-emitting device fixedly arranged or a photodetector 11, transmits data between the light-emitting device 8 and the photodetector 11 while receiving power at the side of the rotor 3 by the rotary transformer 1, and at the same time, transmits a power supply and a signal by the combination of the stationary transformer 200 and photoelectric bodies 110 and 111.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rotary non-contact connector and a non-rotation non-contact connector, and more particularly, to a rotary transformer having a rotating light emitting element or a light receiving element provided on a rotor thereof.
Non-contact optical communication system by supplying electric power to the electric circuit part for driving this rotating side light emitting element or light receiving element from the outside via the rotating transformer or supplying power to the photoelectric element via the non-rotating transformer The present invention relates to a novel improvement for performing one-channel or multi-channel signal transmission.

[0002]

2. Description of the Related Art Conventionally, as a means for transmitting a signal between a fixed side and a rotating side, for example, a gimbal mechanism having a plurality of rotating shafts and a rotating side and fixed side device mounted on a one-axis rotating table are known. , A rotary joint (slip ring), a contact connection type connector, and finally a direct connection wiring resulting in a contact connection type connector. Among the wireless technologies for wiring, transmission and reception of data in a non-contact manner has become much easier due to the development of infrared communication technology in recent years. Since it was difficult, wiring for power remained after all and it was difficult to complete wireless communication. Also, an optical connector optical coupler combining a light emitter and a light receiver has been used.

[0003]

As the conventional means for transmitting a signal between the fixed side and the rotating side is configured as described above, the following problems exist. In other words, of the connection methods of the fixed side and the rotation side, the connection method using the contact type connector and the direct connection wiring method cause the generation of harmful resistance due to the twisting of the wiring and the rigidity of the wiring even if only a finite angle rotation is performed. It was an inevitable problem. Further, the rotary joint (slip ring) method has problems of large size, high cost, low environmental resistance, etc., though the generation of harmful resistance due to the twisting of the wiring and the rigidity of the wiring is small. In addition, in the case where the required data capacity is supported by increasing the number of channels, the use of a modulation type infrared communication element leads to a reduction in data transmission speed and, consequently, a reduction in transmission capacity and an increase in price. Therefore, a non-modulation method must be adopted. In this case, there was a problem of interference between channels.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems. In particular, a rotation-side light emitting element or a light-receiving element is provided on a rotor of a rotation transformer, and the rotation-side light-emitting element or the light-receiving element is provided from outside via a rotation transformer. One-channel or multi-channel signal transmission is performed by a non-contact optical communication system by supplying power to an electric circuit unit for driving a light-emitting element or a light-receiving element, or supplying power to a photoelectric element via a non-rotating transformer. An object of the present invention is to provide a rotating non-contact connector and a non-rotating non-contact connector as described above.

[0005]

SUMMARY OF THE INVENTION A rotary type non-contact connector according to the present invention comprises a rotor having a rotary transformer winding and a ring-shaped stator having a stator transformer winding concentric with the rotor. And a rotation-side light-emitting element or a rotation-side light-receiving element provided on the rotor, and a fixed-side fixed-side light-emitting element or a fixed-side light-receiving element that is arranged to face the rotation-side light-emitting element or the rotation-side light-receiving element and Power can be supplied to the rotor side by the rotary transformer,
Further, a non-magnetic bearing is provided between the rotor and the ring-shaped stator, and an electric circuit unit for driving the rotation-side light emitting element or the rotation-side light receiving element is provided. The electric power is supplied to the electric circuit unit via the rotary transformer, and the rotation-side light-emitting element or the rotation-side light-receiving element is provided at a center position of the rotor. The rotation-side light-emitting element or the rotation-side light-receiving element is provided in a plurality at a peripheral position other than the center position of the rotor, and the rotation-side light-emitting element or the rotation-side light-receiving element is provided. The element has a configuration in which a plurality of elements are provided along the radial direction of the rotor. The electric circuit section has a configuration in which the element is provided in the rotor. A first fixed body having the first fixed body Comprising a second fixing member having a second transformer winding is disposed opposite the first, the first of a second provided on the fixed body emitters or the light receiving body and a second photoelectric body,
It is configured to supply power to any of the photoelectric elements via magnetic coupling between the transformer windings.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of a rotary non-contact connector and a non-rotation non-contact connector according to the present invention will be described below with reference to the drawings. In FIG. 1 to FIG. 4, a rotary transformer as a non-contact power supply device is denoted by reference numeral 1. The rotary transformer 1 includes a hollow (solid) rotor 3 having a rotary transformer winding 2. And a ring-shaped stator 5 having a stator transformer winding 4 provided concentrically with the rotor 3 at an outer peripheral position.

A non-magnetic non-magnetic bearing 6 made of resin or the like is provided on an inner wall portion of the annular stator 5, and the non-magnetic bearing 6 is disposed between the annular stator 5 and the rotor 3. Has been established. In some cases, the non-magnetic bearing 6 is not used. In such a case, the rotor 3 is connected to a rotating member of the apparatus, and the annular stator 5 is fixed to the fixed side of the apparatus. It is also possible to position the annular stator 5.

A holding plate 7 is provided above the rotor 3 so as to cover a hollow portion thereof, and one or a plurality of rotation-side light emitting elements 8 (light receiving elements are also possible) are provided on the holding plate 7. An electric circuit section 9 for driving the rotation side light emitting element 8 is attached to the rotor 3, and the electric power can be received from the outside via the rotary transformer 1. The electric circuit section 9 can be provided on a rotating member other than the rotor 3. It goes without saying that the power supply via the rotary transformer 1 can be performed not only for the light emitting and light receiving elements but also for other general circuits (not shown).

A fixing member 10 is provided on the upper part of the stator 5 so as to cover the rotor 3 and the stator 5. Inside the fixing member 10, each of the rotation side light emitting elements 9 is provided. One or a plurality of fixed-side light-receiving elements 11 (light-emitting elements are also possible) are provided so as to enable the fixing member 10 to be fixed to the ring-shaped stator 5 and to a fixed side of a device (not shown). Can be installed.

Next, in the above-mentioned state, when electric power is externally transmitted to the electric circuit section 9 via the rotary transformer 1 and drive signals as various data are supplied from the electric circuit section 9 to the light emitting element 8, light emission is performed. The element 8 emits light based on the driving signal, and the light emission state is received by the light receiving element 11, data is transmitted from the light emitting element 8 to the light receiving element 11 by optical communication, and the light is transmitted to the mechanical connector or the slip ring. The same operation can be performed without contact. In addition,
The arrangement relationship between the light emitting element 8 and the light receiving element 11 can be reversed as described above.

Next, FIGS. 5 to 9 show the rotation side light emitting element 1.
The relationship between the output range of No. 1 and the light receiving range of the fixed-side light receiving element 8 is indicated by r and R. Each of the elements 8 and 10 can be provided at the center position and used for one channel. However, as shown in FIGS. 5 and 6, four light-emitting elements 11 and six light-receiving elements 8 other than the center position are used. When the elements 8 and 11 are arranged at the peripheral position, a plurality of elements 8 and 11 may be provided along the radial direction as shown in FIG. In the case of FIG. 5, the four light-emitting elements 11 are 2.1, 2.2, 2.3, and 2.4, respectively, and are channel 1, channel 2, channel 3, and channel 4, respectively. The emission output range on each light receiving element 8 surface is indicated by a radius r. Four light-emitting elements 11 are required because of a 4-channel output request. To prevent interruption of data reception and occurrence of interference, a light-receiving radius of a radius R is set at a vertex position of a regular hexagon around the rotation axis. The light receiving element 8 has the following,
3.1, 3.2, 3.3, 3.4, 3.5, 3.6-6
Required. As shown in FIG.
When the light-emitting element 11 starts to enter the circle of the light-receiving element 3.2 due to the rotation, 2.2 of the light-emitting element 11 that was in the circle of 3.2 has been completely removed at that time. Is switched so that the output of channel 2 is changed to the output of channel 1 (2.1 of the light emitting element 11). Similarly, if the output of the light receiving element is sequentially switched in accordance with the rotation of other channels, data communication can be performed without interruption or interference of the output signal of each channel. In FIG. 5, the output r of the light emitting element is often smaller than the input range R of the light receiving element.
Although the case where ≧ r is illustrated, FIG. 6 shows the case where r> R.
Similarly, if the output of the light receiving element is sequentially switched corresponding to the rotation angle, optical communication becomes possible.

Next, an embodiment in which the output from the rotation-side device in the case of finite angle rotation is two channels will be described. When the two channels are on the same circumference, as shown in FIG.
Are installed, and the central light receiving element 8 is switched according to the rotation angle to perform optical communication. FIG. 8 shows the case where r> R.
This is also possible in this case. In addition, in all of the above-described embodiments, the light emitting element 11 is provided on the rotation side device.
In the case where the light receiving element 8 was installed on the fixed side device, as described above, on the contrary, when the light receiving element 8 was installed on the rotating side device and the light emitting element 11 was installed on the fixed side device, the rotating side shown in FIG. Can be regarded as the fixed side and the fixed side as the rotating side, so that bidirectional optical data communication is possible. In each case, the light-emitting elements 11 are on the same circumference. However, the two-channel light-emitting elements are not on the same circumference but on two concentric circles.
In the case where the components can be installed one by one, that is, along the radial direction, the same is possible as shown in FIG. As described above, by appropriately arranging the light-emitting and light-receiving elements and appropriately switching the element output with a switch, infrared communication, which is a non-contact data transmission method including two-way communication, becomes possible. From the above, a rotary type non-contact connector can be obtained by combining the non-contact power supply device and the non-contact data communication device.
FIG. 8 shows a configuration of a non-rotating non-contact connector as another embodiment. That is, the first transformer winding 100
Transformer winding 1 with respect to first fixed body 101 having
02 approach the second fixed body 103 (0.05 mm)
The first and second photoconductors 110 and 1 each composed of a light-emitting body or a light-receiving body are provided on each of the fixed bodies 101 and 103.
The fixed transformer 200 is constituted by the first and second photoconductors 101 and 103. Therefore, the power supplied through the magnetic coupling of the transformer windings 100 and 102 is supplied to one of the first and second photoelectric elements 110 and 111 via a wiring (not shown). Further, contrary to the above, a signal from any one of the photoelectric elements 110 and 111 can be extracted to the outside through the transformer windings 100 and 102.

[0013]

The rotary type non-contact connector according to the present invention comprises:
With the above configuration, the following effects can be obtained. That is, since the rotary transformer and the coupling means of the optical element are combined, it is possible to perform data communication between the optical elements in a non-contact manner while being supplied with power from the outside. And the like can be easily and reliably performed without contact. In a non-rotating non-contact connector, power and signals can be supplied in a non-contact manner in a fixed state.

[Brief description of the drawings]

FIG. 1 is a sectional view of a rotary type non-contact connector according to the present invention.

FIG. 2 is a plan view of a main part of FIG.

FIG. 3 is a sectional view of a main part of FIG. 1;

FIG. 4 is a schematic view of a main part of FIG. 1;

FIG. 5 is a diagram illustrating a relationship between a light receiving range on a fixed-side light receiving element surface and an output range of a light emitting element.

FIG. 6 is a configuration diagram when r> R in FIG. 5;

FIG. 7 is a configuration diagram of R ≧ r in the case of finite angle rotation.

8 is a diagram illustrating a case where r> R in FIG. 7 and illustrates an example of an arrangement in which a light receiving element is installed on a rotating side device and a light emitting element is installed on a fixed side device.

FIG. 9 is an example of the arrangement of light receiving elements when the arrangement of light emitting elements is concentric.

FIG. 10 is a configuration diagram showing a non-rotation type non-contact connector according to another embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Rotary transformer 2 Transformer winding 3 Rotor 5 Ring stator 8 Rotation side light emitting element 9 Electric circuit part 11 Fixed side light receiving element

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[Procedure amendment]

[Submission date] October 11, 2000 (2000.10.
11)

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] Full text

[Correction method] Change

[Correction contents]

[Document Name] Statement

Patent application title: Rotary non-contact connector and non-rotatable non-contact connector

[Claims]

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rotary non-contact connector and a non-rotation non-contact connector, and more particularly, to a rotary transformer having a rotating light emitting element or a light receiving element provided on a rotor thereof.
Non-contact optical communication system by supplying electric power to the electric circuit part for driving this rotating side light emitting element or light receiving element from the outside via the rotating transformer or supplying power to the photoelectric element via the non-rotating transformer The present invention relates to a novel improvement for performing one-channel or multi-channel signal transmission.

[0002]

2. Description of the Related Art Conventionally, as a means for transmitting a signal between a fixed side and a rotating side, for example, a gimbal mechanism having a plurality of rotating shafts and a rotating side and fixed side device mounted on a one-axis rotating table are known. , A rotary joint (slip ring), a contact connection type connector, and finally a direct connection wiring resulting in a contact connection type connector. Among the wireless technologies for wiring, transmission and reception of data in a non-contact manner has become much easier due to the development of infrared communication technology in recent years. Since it was difficult, wiring for power remained after all and it was difficult to complete wireless communication. Also, an optical connector optical coupler combining a light emitter and a light receiver has been used.

[0003]

As the conventional means for transmitting a signal between the fixed side and the rotating side is configured as described above, the following problems exist. In other words, of the connection methods of the fixed side and the rotation side, the connection method using the contact type connector and the direct connection wiring method cause the generation of harmful resistance due to the twisting of the wiring and the rigidity of the wiring even if only a finite angle rotation is performed. It was an inevitable problem. Further, the rotary joint (slip ring) method has problems of large size, high cost, low environmental resistance, etc., though the generation of harmful resistance due to the twisting of the wiring and the rigidity of the wiring is small. In addition, in the case where the required data capacity is supported by increasing the number of channels, the use of a modulation type infrared communication element leads to a reduction in data transmission speed and, consequently, a reduction in transmission capacity and an increase in price. Therefore, a non-modulation method must be adopted. In this case, there was a problem of interference between channels.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems. In particular, a rotation-side light emitting element or a light-receiving element is provided on a rotor of a rotation transformer, and the rotation-side light-emitting element or the light-receiving element is provided from outside via a rotation transformer. One-channel or multi-channel signal transmission is performed by a non-contact optical communication system by supplying power to an electric circuit unit for driving a light-emitting element or a light-receiving element, or supplying power to a photoelectric element via a non-rotating transformer. An object of the present invention is to provide a rotating non-contact connector and a non-rotating non-contact connector as described above.

[0005]

SUMMARY OF THE INVENTION A rotary type non-contact connector according to the present invention comprises a rotor having a rotary transformer winding and a ring-shaped stator having a stator transformer winding concentric with the rotor. And a rotation-side light-emitting element or a rotation-side light-receiving element provided on the rotor, and a fixed-side fixed-side light-emitting element or a fixed-side light-receiving element that is disposed opposite to the rotation-side light-emitting element or the rotation-side light-receiving element and is fixed. Power can be supplied to the rotor side by the rotary transformer,
Further, a non-magnetic bearing is provided between the rotor and the ring-shaped stator, and an electric circuit unit for driving the rotation-side light emitting element or the rotation-side light receiving element is provided. The electric power is supplied to the electric circuit unit via the rotary transformer, and the rotation-side light-emitting element or the rotation-side light-receiving element is provided at a center position of the rotor. The rotation-side light-emitting element or the rotation-side light-receiving element is provided in a plurality at a peripheral position other than the center position of the rotor, and the rotation-side light-emitting element or the rotation-side light-receiving element is provided. The element has a configuration in which a plurality of elements are provided along the radial direction of the rotor. The electric circuit section has a configuration in which the element is provided in the rotor. A first fixed body having the first fixed body Comprising a second fixing member having a second transformer winding is disposed opposite the first, the first of a second provided on the fixed body emitters or the light receiving body and a second photoelectric body,
It is configured to supply power to any of the photoelectric elements via magnetic coupling between the transformer windings.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of a rotary non-contact connector and a non-rotation non-contact connector according to the present invention will be described below with reference to the drawings. In FIG. 1 to FIG. 4, a rotary transformer as a non-contact power supply device is denoted by reference numeral 1. The rotary transformer 1 includes a hollow (solid) rotor 3 having a rotary transformer winding 2. And a ring-shaped stator 5 having a stator transformer winding 4 provided concentrically with the rotor 3 at an outer peripheral position.

A non-magnetic non-magnetic bearing 6 made of resin or the like is provided on an inner wall portion of the annular stator 5, and the non-magnetic bearing 6 is disposed between the annular stator 5 and the rotor 3. Has been established. In some cases, the non-magnetic bearing 6 is not used. In such a case, the rotor 3 is connected to a rotating member of the apparatus, and the annular stator 5 is fixed to the fixed side of the apparatus. It is also possible to position the annular stator 5.

A holding plate 7 is provided above the rotor 3 so as to cover a hollow portion thereof, and one or a plurality of rotation-side light emitting elements 8 (light receiving elements are also possible) are provided on the holding plate 7. An electric circuit section 9 for driving the rotation side light emitting element 8 is attached to the rotor 3, and the electric power can be received from the outside via the rotary transformer 1. The electric circuit section 9 can be provided on a rotating member other than the rotor 3. It goes without saying that the power supply via the rotary transformer 1 can be performed not only for the light emitting and light receiving elements but also for other general circuits (not shown).

A fixing member 10 is provided on the upper part of the stator 5 so as to cover the rotor 3 and the stator 5. Inside the fixing member 10, each of the rotation side light emitting elements 9 is provided. One or a plurality of fixed-side light-receiving elements 11 (light-emitting elements are also possible) are provided so as to enable the fixing member 10 to be fixed to the ring-shaped stator 5 and to a fixed side of a device (not shown). Can be installed.

Next, in the above-mentioned state, when electric power is externally transmitted to the electric circuit section 9 via the rotary transformer 1 and drive signals as various data are supplied from the electric circuit section 9 to the light emitting element 8, light emission is performed. The element 8 emits light based on the driving signal, and the light emission state is received by the light receiving element 11, data is transmitted from the light emitting element 8 to the light receiving element 11 by optical communication, and the light is transmitted to the mechanical connector or the slip ring. The same operation can be performed without contact. In addition,
The arrangement relationship between the light emitting element 8 and the light receiving element 11 can be reversed as described above.

Next, FIGS. 5 to 9 show the rotation side light emitting element 1.
The relationship between the output range of No. 1 and the light receiving range of the fixed-side light receiving element 8 is indicated by r and R. Each of the elements 8 and 10 can be provided at the center position and used for one channel. However, as shown in FIGS. 5 and 6, four light-emitting elements 11 and six light-receiving elements 8 other than the center position are used. When the elements 8 and 11 are arranged at the peripheral position, a plurality of elements 8 and 11 may be provided along the radial direction as shown in FIG. In the case of FIG. 5, the four light-emitting elements 11 are 2.1, 2.2, 2.3, and 2.4, respectively, and are channel 1, channel 2, channel 3, and channel 4, respectively. The emission output range on each light receiving element 8 surface is indicated by a radius r. Four light-emitting elements 11 are required because of a 4-channel output request. To prevent interruption of data reception and occurrence of interference, a light-receiving radius of a radius R is set at a vertex position of a regular hexagon around the rotation axis. The light receiving element 8 has the following,
3.1, 3.2, 3.3, 3.4, 3.5, 3.6-6
Required. As shown in FIG.
When the light-emitting element 11 starts to enter the circle of the light-receiving element 3.2 due to the rotation, 2.2 of the light-emitting element 11 that was in the circle of 3.2 has been completely removed at that time. Is what was the output of channel 2 and now channel 1
The switch is switched so as to output (2.1 of the light emitting element 11). Similarly, if the output of the light receiving element is sequentially switched in accordance with the rotation of other channels, data communication can be performed without interruption or interference of the output signal of each channel. FIG. 5 illustrates the case where R ≧ r since the light emitting element output r is often smaller than the input range R of the light receiving element, but FIG. 6 illustrates the case where r> R. Similarly, if the output of the light receiving element is sequentially switched corresponding to the rotation angle, optical communication becomes possible.

Next, an embodiment in which the output from the rotation-side device in the case of finite angle rotation is two channels will be described. When the two channels are on the same circumference, as shown in FIG.
Are installed, and the central light receiving element 8 is switched according to the rotation angle to perform optical communication. FIG. 8 shows the case where r> R.
This is also possible in this case. In addition, in all of the above-described embodiments, the light emitting element 11 is provided on the rotation side device.
In the case where the light receiving element 8 was installed on the fixed side device, as described above, on the contrary, when the light receiving element 8 was installed on the rotating side device and the light emitting element 11 was installed on the fixed side device, the rotating side shown in FIG. Can be regarded as the fixed side and the fixed side as the rotating side, so that bidirectional optical data communication is possible. In each case, the light-emitting elements 11 are on the same circumference. However, the two-channel light-emitting elements are not on the same circumference but on two concentric circles.
In the case where the components can be installed one by one, that is, along the radial direction, the same is possible as shown in FIG. As described above, by appropriately arranging the light-emitting and light-receiving elements and appropriately switching the element output with a switch, infrared communication, which is a non-contact data transmission method including two-way communication, becomes possible. From the above, a rotary type non-contact connector can be obtained by combining the non-contact power supply device and the non-contact data communication device.
FIG. 10 shows a configuration of a non-rotating non-contact connector as another embodiment. That is, the first transformer winding 10
The second fixed body 103 having the second transformer winding 102 is disposed close to (0.05 mm) with respect to the first fixed body 101 having no. A first photoelectric body 110 and a second photoelectric body 111 composed of a photoreceptor are provided, and first and second fixed bodies 101 and 103 are provided.
Constitutes the fixed transformer 200. Therefore, the electric power supplied through the magnetic coupling of the transformer windings 100 and 102 is supplied to one of the first and second photoelectric elements 110 and 111 via a wiring (not shown). Further, a signal from any one of the photoelectric elements 110 and 111 can be extracted to the outside via the transformer windings 100 and 102.

[0013]

The rotary type non-contact connector according to the present invention comprises:
With the above configuration, the following effects can be obtained. That is, since the rotary transformer and the coupling means of the optical element are combined, it is possible to perform data communication between the optical elements in a non-contact manner while being supplied with power from the outside. And the like can be easily and reliably performed without contact. In a non-rotating non-contact connector, power and signals can be supplied in a non-contact manner in a fixed state.

[Brief description of the drawings]

FIG. 1 is a sectional view of a rotary type non-contact connector according to the present invention.

FIG. 2 is a plan view of a main part of FIG.

FIG. 3 is a sectional view of a main part of FIG. 1;

FIG. 4 is a schematic view of a main part of FIG. 1;

FIG. 5 is a diagram illustrating a relationship between a light receiving range on a fixed-side light receiving element surface and an output range of a light emitting element.

FIG. 6 is a configuration diagram when r> R in FIG. 5;

FIG. 7 is a configuration diagram of R ≧ r in the case of finite angle rotation.

8 is a diagram illustrating a case where r> R in FIG. 7 and illustrates an example of an arrangement in which a light receiving element is installed on a rotating side device and a light emitting element is installed on a fixed side device.

FIG. 9 is an example of the arrangement of light receiving elements when the arrangement of light emitting elements is concentric.

FIG. 10 is a configuration diagram showing a non-rotation type non-contact connector according to another embodiment of the present invention.

[Description of Signs] 1 Rotary transformer 2 Transformer winding 3 Rotor 5 Ring stator 8 Rotating light emitting element 9 Electric circuit section 11 Fixed light receiving element

[Procedure amendment 2]

[Document name to be amended] Drawing

[Correction target item name] All figures

[Correction method] Change

[Correction contents]

FIG.

FIG. 2

FIG. 4

FIG. 3

FIG. 5

FIG. 6

FIG. 7

FIG. 8

FIG. 9

FIG. 10 ────────────────────────────────────────────────── ───

[Procedure amendment]

[Submission date] June 19, 2001 (2001.6.1)
9)

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] Full text

[Correction method] Change

[Correction contents]

[Document Name] Statement

Patent application title: Rotary non-contact connector and non-rotatable non-contact connector

[Claims]

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rotary non-contact connector and a non-rotation non-contact connector, and more particularly, to a rotary transformer having a rotating light emitting element or a light receiving element provided on a rotor thereof.
Non-contact optical communication system by supplying electric power to the electric circuit part for driving this rotating side light emitting element or light receiving element from the outside via the rotating transformer or supplying power to the photoelectric element via the non-rotating transformer The present invention relates to a novel improvement for performing one-channel or multi-channel signal transmission.

[0002]

2. Description of the Related Art Conventionally, as a means for transmitting a signal between a fixed side and a rotating side, for example, a gimbal mechanism having a plurality of rotating shafts and a rotating side and fixed side device mounted on a one-axis rotating table are known. , A rotary joint (slip ring), a contact connection type connector, and finally a direct connection wiring resulting in a contact connection type connector. Among the wireless technologies for wiring, transmission and reception of data in a non-contact manner has become much easier due to the development of infrared communication technology in recent years. Since it was difficult, wiring for power remained after all and it was difficult to complete wireless communication. Also, an optical connector optical coupler combining a light emitter and a light receiver has been used.

[0003]

As the conventional means for transmitting a signal between the fixed side and the rotating side is configured as described above, the following problems exist. In other words, of the connection methods of the fixed side and the rotation side, the connection method using the contact type connector and the direct connection wiring method cause the generation of harmful resistance due to the twisting of the wiring and the rigidity of the wiring even if only a finite angle rotation is performed. It was an inevitable problem. Further, the rotary joint (slip ring) method has problems of large size, high cost, low environmental resistance, etc., though the generation of harmful resistance due to the twisting of the wiring and the rigidity of the wiring is small. In addition, in the case where the required data capacity is supported by increasing the number of channels, the use of a modulation type infrared communication element leads to a reduction in data transmission speed and, consequently, a reduction in transmission capacity and an increase in price. Therefore, a non-modulation method must be adopted. In this case, there was a problem of interference between channels.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems. In particular, a rotation-side light emitting element or a light-receiving element is provided on a rotor of a rotation transformer, and the rotation-side light-emitting element or the light-receiving element is provided from outside via a rotation transformer. One-channel or multi-channel signal transmission is performed by a non-contact optical communication system by supplying power to an electric circuit unit for driving a light-emitting element or a light-receiving element, or supplying power to a photoelectric element via a non-rotating transformer. An object of the present invention is to provide a rotating non-contact connector and a non-rotating non-contact connector as described above.

[0005]

SUMMARY OF THE INVENTION A rotary type non-contact connector according to the present invention comprises a rotor having a rotary transformer winding and a ring-shaped stator having a stator transformer winding concentric with the rotor. And a rotation-side light-emitting element or a rotation-side light-receiving element provided on the rotor, and a fixed-side fixed-side light-emitting element or a fixed-side light-receiving element that is disposed opposite to the rotation-side light-emitting element or the rotation-side light-receiving element and is fixed. Power can be supplied to the rotor side by the rotary transformer,
Further, a non-magnetic bearing is provided between the rotor and the ring-shaped stator, and further includes an electric circuit unit for driving the rotation-side light-emitting element or the rotation-side light-receiving element. , A configuration in which power is supplied to the electric circuit unit via the rotary transformer, and the rotary side light emitting element or the rotary side light receiving element is provided at a center position of the rotor. The rotation-side light-emitting element or the rotation-side light-receiving element has a configuration in which a plurality of rotation-side light-emitting elements or rotation-side light-receiving elements are provided at peripheral positions other than the center position of the rotor. Is a configuration provided in plurality in the radial direction of the rotor, and the electric circuit portion is a configuration provided in the rotor, and has a first transformer winding. A first fixed body, and the first fixed body Comprising a second fixing member having a second transformer winding is disposed opposite the first, the first of a second provided on the fixed body emitters or the light receiving body and a second light collector,
It is configured to supply power to any of the photoelectric elements via magnetic coupling between the transformer windings.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of a rotary non-contact connector and a non-rotation non-contact connector according to the present invention will be described below with reference to the drawings. In FIG. 1 to FIG. 4, a rotary transformer as a non-contact power supply device is denoted by reference numeral 1. The rotary transformer 1 includes a hollow (solid) rotor 3 having a rotary transformer winding 2. And a ring-shaped stator 5 having a stator transformer winding 4 provided concentrically with the rotor 3 at an outer peripheral position.

A non-magnetic non-magnetic bearing 6 made of resin or the like is provided on the inner wall portion of the annular stator 5, and the non-magnetic bearing 6 is disposed between the annular stator 5 and the rotor 3. ing. This non-magnetic bearing 6 may not be used in some cases.
In that case, it is also possible to connect the rotor 3 to the rotating member of the apparatus, fix the annular stator 5 to the stationary side of the apparatus, and align the rotor 3 and the annular stator 5.

A holding plate 7 is provided above the rotor 3 so as to cover a hollow portion thereof, and one or a plurality of rotation-side light emitting elements 8 (light receiving elements are also possible) are provided on the holding plate 7. An electric circuit section 9 for driving the rotation side light emitting element 8 is attached to the rotor 3, and the electric power can be received from the outside via the rotary transformer 1. The electric circuit section 9 can be provided on a rotating member other than the rotor 3. It goes without saying that the power supply via the rotary transformer 1 can be performed not only for the light emitting and light receiving elements but also for other general circuits (not shown).

On the upper part of the annular stator 5, a fixing member 1 is provided.
0 is provided so as to cover the rotor 3 and the stator 5, and one or a plurality of fixed-side light receiving elements are provided inside the fixed member 10 so as to correspond to each of the rotation-side light-emitting elements 8. 11 (a light emitting element is also possible) is provided, and this fixing member 10 can be attached to the ring-shaped stator 5 or to a fixed side of a device (not shown).

Next, in the above-mentioned state, when electric power is externally transmitted to the electric circuit section 9 via the rotary transformer 1 and drive signals as various data are supplied from the electric circuit section 9 to the rotation side light emitting element 8. The rotation-side light-emitting element 8 emits light based on the drive signal, and the light-emitting state is received by the fixed-side light-receiving element 11, and data transmission from the rotation-side light-emitting element 8 to the fixed-side light-receiving element 11 is performed by optical communication. I,
The same function as a mechanical connector or a slip ring can be performed without contact. Note that this rotation side light emitting element 8
As described above, the positional relationship between the fixed side light receiving element 11 and
The opposite relationship can be used.

Next, FIGS. 5 to 9 show the rotation side light emitting element 8.
And the light receiving range of the fixed-side light receiving element 11 are indicated by r and R. Each of the elements 8 and 11 may be provided at the center position and used for one channel. However, as shown in FIGS. 5 and 6, four rotating light emitting elements 8 and six fixed light receiving elements 11 are used. When the elements 8 and 11 are arranged at peripheral positions other than the center position, a plurality of elements 8 and 11 may be provided along the radial direction as shown in FIG. In the case of FIG. 5, the four rotation-side light-emitting elements 8 are 2.1, 2.2, 2.3, and 2.4, respectively, and are channel 1, channel 2, channel 3, and channel 4, respectively. The light emission output range on each fixed-side light receiving element 11 is indicated by a radius r. Four rotation-side light-emitting elements 8 are required because the output is required for four channels. In order to prevent interruption of data reception and generation of interference, a light receiving element having a radius R at a vertex position of a regular hexagon around the rotation axis is required. The fixed-side light receiving element 11 having a radius is hereinafter referred to as 3.1, 3.
2, 3.3, 3.4, 3.5, and 3.6 are required. As shown in FIG. 5, when 2.1 of the rotation-side light-emitting element 8 starts to enter the circle of the fixed-side light-receiving element 3.2 due to rotation, 2 of the rotation-side light-emitting element 8 that has entered the circle of 3.2. .2 are missing at that time, and 3.2 of the fixed-side light receiving element 11 has been the output of the channel 2 until now, and is now the output of the channel 1 (2.1 of the rotation-side light emitting element 8). Switch. Similarly, if the output of the light receiving element is sequentially switched in accordance with the rotation of other channels, data communication can be performed without interruption or interference of the output signal of each channel. FIG.
In many cases, the output r of the light emitting element is smaller than the input range R of the light receiving element.
The case of R is shown. Similarly, if the output of the light receiving element is sequentially switched corresponding to the rotation angle, optical communication becomes possible.

Next, an embodiment in which the output from the rotation-side device in the case of finite angle rotation is two channels will be described. When the two channels are on the same circumference, as shown in FIG. 7, three fixed light receiving elements 11 are provided, and the central fixed light receiving element 11 is switched according to the rotation angle to perform optical communication. FIG. 8 shows a case where r> R, but this case is also possible. Also,
In each of the above embodiments, the rotation-side device has the rotation-side light-emitting element 8 and the fixed-side device has the fixed-side light-receiving element 11.
However, as described above, when the light receiving element 11 is installed on the rotating device and the light emitting element 8 is installed on the fixed device, the rotating side in FIG. Since it may be regarded as the rotating side, bidirectional optical data communication is possible. In each case, the rotation-side light-emitting elements 8 are on the same circumference. However, the two-channel light-emitting elements are not on the same circumference but on two concentric circles, one by one, that is, along the radial direction. When it can be installed, it is also possible as shown in FIG. As described above, by appropriately arranging the light-emitting and light-receiving elements and appropriately switching the element output with a switch, infrared communication, which is a non-contact data transmission method including two-way communication, becomes possible. From the above, a rotary type non-contact connector can be obtained by combining the non-contact power supply device and the non-contact data communication device. FIG. 10 shows a configuration of a non-rotating non-contact connector as another embodiment.
That is, the second fixed body 103 having the second transformer winding 102 is approached (0.05 mm) to the first fixed body 101 having the first transformer winding 100, and is fixedly arranged.
Each of the fixed bodies 101 and 103 is provided with a first photoelectric body 110 and a second photoelectric body 111 composed of a light emitting body or a light receiving body, and a fixed transformer 2 is formed by the first and second fixed bodies 101 and 103.
00 is configured. Therefore, each transformer winding 10
The power supplied via the magnetic couplings 0, 102 is the first,
Power is supplied to one of the second photoelectric elements 110 and 111 via a wiring (not shown). In addition, a signal from any of the photoconductors 110 and 111 can be extracted to the outside via the transformer windings 100 and 102.

[0013]

The rotary type non-contact connector according to the present invention comprises:
With the above configuration, the following effects can be obtained. That is, since the rotary transformer and the coupling means of the optical element are combined, it is possible to perform data communication between the optical elements in a non-contact manner while being supplied with power from the outside. And the like can be easily and reliably performed without contact. In a non-rotating non-contact connector, power and signals can be supplied in a non-contact manner in a fixed state.

[Brief description of the drawings]

FIG. 1 is a sectional view of a rotary type non-contact connector according to the present invention.

FIG. 2 is a plan view of a main part of FIG.

FIG. 3 is a sectional view of a main part of FIG. 1;

FIG. 4 is a schematic view of a main part of FIG. 1;

FIG. 5 is a diagram illustrating a relationship between a light receiving range on a fixed-side light receiving element surface and an output range of a light emitting element.

FIG. 6 is a configuration diagram when r> R in FIG. 5;

FIG. 7 is a configuration diagram of R ≧ r in the case of finite angle rotation.

8 is a diagram illustrating a case where r> R in FIG. 7 and illustrates an example of an arrangement in which a light receiving element is installed on a rotating side device and a light emitting element is installed on a fixed side device.

FIG. 9 is an example of the arrangement of light receiving elements when the arrangement of light emitting elements is concentric.

FIG. 10 is a configuration diagram showing a non-rotation type non-contact connector according to another embodiment of the present invention.

[Description of Signs] 1 Rotary transformer 2 Transformer winding 3 Rotor 5 Ring stator 8 Rotating light emitting element 9 Electric circuit section 11 Fixed light receiving element

[Procedure amendment 2]

[Document name to be amended] Drawing

[Correction target item name] All figures

[Correction method] Change

[Correction contents]

FIG.

FIG. 2

FIG. 4

FIG. 3

FIG. 5

FIG. 6

FIG. 7

FIG. 8

FIG. 9

FIG. 10

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Akifumi Arai 1879 Oikyu, Iida City, Nagano Prefecture Inside Tamagawa Seiki Co., Ltd. (72) Inventor Hiroyuki Kotabashi 23-3 Noguchi, Komaki City, Aichi Prefecture Central Japan Marco Co., Ltd.

Claims (8)

[Claims] A rotor (3) having a rotating transformer winding (2)
And a rotary transformer (1) comprising a ring-shaped stator (5) concentric with the rotor (3) and having a stator transformer winding (4), and a rotation-side light-emitting device provided on the rotor (3). An element (8) or a rotation-side light-receiving element, and a fixed-side fixed-side light-emitting element or a fixed-side light-receiving element (11) that is disposed to face the rotation-side light-emitting element (8) or the rotation-side light-receiving element, and the rotary transformer (1) A rotary non-contact connector characterized in that power can be supplied to the rotor (3) side by (1). 2. The rotary non-contact type according to claim 1, wherein a non-magnetic bearing (6) is provided between the rotor (3) and the annular stator (5). connector. 3. An electric circuit section (9) for driving the rotation side light emitting element (8) or the rotation side light receiving element, and the electric circuit section (9) is connected to the electric circuit section (9) via the rotation transformer (1). The rotary type non-contact connector according to claim 1, wherein power is supplied. 4. The rotation-side light emitting element (8) or the rotation-side light receiving element is provided at a center position of the rotor (3). Rotary non-contact connector. 5. The rotation-side light-emitting element (8) or the rotation-side light-receiving element is provided at a plurality of peripheral positions other than the center position of the rotor (3).
The rotary non-contact connector according to any one of the above. 6. The rotating side light emitting element (8) or a plurality of rotating side light receiving elements are provided along a radial direction of the rotor (3). A rotary non-contact connector according to any one of the above. 7. The rotary non-contact connector according to claim 3, wherein the electric circuit section is provided on the rotor. 8. A first fixed body (101) having a first transformer winding (100), and a second fixed body (101) disposed opposite to the first fixed body (101).
A second fixed body (103) having a transformer winding (102), and first and second photoelectric bodies (110, 111) provided on the first and second fixed bodies (101, 103) and formed of a light emitting body or a light receiving body. A non-rotational non-contact connector, wherein power is supplied to one of the photoconductors (110, 111) via magnetic coupling between the transformer windings (100, 102).