JPH04107513A - Multifiber connector - Google Patents

Abstract

PURPOSE:To adapt the multifiber connector to various tip tools which differ in the number of sensors without switching the same control board electrically by providing a jumper fiber which connects fiber terminals of the sensor-side element of the connector directly in the sensor-side element. CONSTITUTION:A reflection type fiber sensor 1 corresponds to one of pairs of light emission elements 10 and light reception elements 11 and the jumper fiber 6 corresponds to the other pair. Light projected from the light emission terminal 10 is received by the light reception terminal 11 through the jumper fiber 6 in the sensor-side element 5 of the multifiber connector 8. Namely, the light reception terminal 11 on the side where the sensor is not provided is invariably in the light reception state and it can eventually be considered that the presence of a body to be detected at a specific position is always detected by connecting a reflection type sensor. Consequently, even if the number of sensors varies owing to the switching of a tip tool, the circuit in the control board need not be switched electrically.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention is directed to a multi-core reciprocating fiber that connects a fiber sensor having a light emitting part and a light receiving part to a light emitting terminal and a light receiving terminal of a control panel. This invention relates to multi-core fiber connectors.

Conventional technology While referring to the drawings, we will explain a conventional multi-core fiber connector placed in the middle of a single multi-core reciprocating fiber that connects a fiber sensor with a light emitting part and a light receiving part, and a light emitting terminal and a light receiving terminal of a control panel. explain.

FIG. 2 shows a conventional fiber connector.

In FIG. 2, 21 is a fiber sensor, 22 is a light emitter, 23 is a light receiver, 24 is a multicore reciprocating fiber on the sensor side, 25 is an element on the sensor side of the connector 33, 27 is an element on the control panel side of the connector 33, 29 30 is a multicore reciprocating fiber on the control panel side; 30 is a light emitting terminal provided on the control panel 32;
31 is a light receiving terminal provided on the control panel 32.

FIG. 2 shows an example in which two fiber sensors 21 are used.

In FIG. 2, a fiber connector 33 is used when a tip tool (not shown) to which a fiber sensor 21 is attached is used in various numbers depending on the shape of the object to be detected. The sensor 21, the sensor-side multicore reciprocating fiber 24, and the sensor-side element 25 of the connector 33 have been replaced with one in which they are integrally connected. Conventionally, since direct fiber connection is troublesome, this method has been adopted as a rational method for reconnecting fiber circuits.

Problems to be Solved by the Invention However, when replacing the tip tool (not shown) to which a fiber sensor is attached, the number of required sensors is not necessarily the same.

For example, when the control panel 32 is for automatic component insertion in electronic circuit assembly and the fiber sensor 21 is used to determine whether the component is inserted properly, a reflective fiber sensor is used to connect the leads of electronic components such as ICs to printed wiring. To confirm that the leads are placed in the holes in the board into which they are to be inserted, a number of fiber sensors corresponding to the number of leads will be used. Also, on the other hand, the above system? 11th edition 32 is
Normally, when all the sensor circuits of the control panel 32 work normally, that is, the light emitted from all the light emitting terminals 30 of the control panel 32 passes through the respective fiber sensors 21 and reaches each of the control panel 32. The electro-optical conversion, photo-electric conversion and electric circuit are configured and adjusted so that a pass judgment is made only when light is received by the light receiving terminal 31 and the process proceeds to the next step. Therefore, for example, in the case of a component automatic insertion control board 32 having 50 sensor circuits, the control board 32 has 50 sets of light emitting terminals 30 and light receiving terminals 3.
1, to which 100 fibers are connected,
Connector 33 with 100 terminals on these fibers
The control panel side element 27 is connected. When using this to control the automatic insertion of an electronic component with 30 leads, the 30 fiber sensors 21 attached to the tip tool and the sensor side element 25 of the connector 33 having 60 fibers and 100 terminals are connected. An integrally connected element is prepared, and the sensor side element 25 with 100 terminals is used by connecting to the control panel side element 27 with 100 terminals. In this state, the 30 sensor circuits corresponding to the 30 fiber sensors 21 will work normally if the above-mentioned electronic components are inserted normally, but the 20 sensor circuits that do not have corresponding sensors will be connected to the light emitting terminals 30. Since the light emitted from the light receiving terminal 31 does not return to the light receiving terminal 31, the control panel 32 determines that the insertion is abnormal and does not proceed to the next step. This control panel 32
In order to operate normally, the 20 sensor circuits that do not correspond to the fiber sensor had to be electrically switched one by one so that they had no relation to the pass/fail judgment circuit in the control panel.

In order to solve the above problems, the present invention provides a multicore fiber connector that eliminates the need to electrically switch circuits in a control panel even if the number of sensors changes by switching tip tools.

Means for Solving the Problems In order to solve the above problems, the multicore fiber connector of the present invention includes at least one jumper fiber that directly connects one end of the fibers of the element in the sensor side element of the connector. It is characterized by having

Optimally, the number of jumper fibers is equal to the difference between the number of combinations of light emitting terminals and light receiving terminals and the number of fiber sensors.

According to the present invention, the light emitted from the light emitting terminal that does not have a corresponding fiber sensor passes through the jumper fiber in the connector of the present invention and is received by the light receiving terminal.
The light receiving terminal is always in a light receiving state. In a reflective fiber sensor, this corresponds to a state where the object to be detected is at a predetermined position and the light from the light emitter hits the object, is reflected, and enters the light receiver; This corresponds to a state in which the object to be detected is not in a predetermined position and the light from the light projecting section is not blocked by the object to be detected and enters the light receiving section. Therefore, when the control panel uses a reflective fiber sensor, as has been the case in the past, the state in which the object to be detected is in a predetermined position is determined to be normal, and when the control panel uses a transmission-type fiber sensor, If the multi-core fiber connector of the present invention is configured and adjusted so that the state in which the object to be detected is not in a predetermined position is determined to be normal, the light-emitting terminal and the light-receiving terminal that do not have a corresponding fiber sensor will correspond as if they corresponded to each other. There is a sensor and the sensor operates as if it were detecting a normal state.

Embodiments Examples of the present invention will be described below with reference to the drawings.

FIG. 1 shows a multi-core fiber connector in one embodiment of the present invention. In Fig. 1, 1 is a fiber sensor (reflection type), 2 is a light emitter, 3 is a light receiver, and 4 is a fiber sensor (reflection type).
5 is the sensor side element of the connector, 6 is the jumper fiber, 7 is the control panel side element of the connector, 8 is the multicore fiber connector, 9 is the control panel side multicore reciprocating fiber 10 is the light emitting terminal ,1
1 is a light receiving terminal, and 12 is a control panel. FIG. 1 shows an example of a multi-core fiber connector of the present invention that can relay one fiber sensor to a control panel having two sensor circuits.

In this embodiment, one of the combinations of the light-emitting terminal 10 and the light-receiving terminal 11 corresponds to the reflective fiber sensor l, which operates normally. The other one does not have a sensor but is supported by a jumper fiber 6, and the light emitted from the light emitting terminal 10 passes through the jumper fiber 6 in the sensor side element 5 of the connector of the multicore fiber connector 8 of the present invention. The light is received by the light receiving terminal 11. In other words, the light-receiving terminal 11 on the side that does not have a sensor is always in a light-receiving state, and as a result, it is the same as connecting a reflective sensor and constantly detecting that the object to be detected is at a predetermined position. Become. On the other hand, the first
Conventionally, all the light emitting terminals 10 in Fig. 1 are installed on the control panel shown in the figure.
The system shown in Figure 1 is configured and adjusted so that when the light emitted from the fiber sensor enters the corresponding light-receiving terminal 11, it is judged as acceptable and proceeds to the next process. The operation is based only on the detection status of .

This is true even when the number of fiber sensors is two or more and the number of combinations of light emitting terminals and light receiving terminals is three or more.

In the embodiment, the multi-core fiber connector 8 of the present invention is installed in a control panel that uses a reflective fiber sensor 1 to detect and operate a state in which a detected object is present at a predetermined position and light is reflected from it as a normal state. However, even if a transmission type fiber sensor is used instead of the reflection type fiber sensor 1, the control panel can detect and operate the state where the object to be detected is not in a predetermined position and light is transmitted as a normal state. If so, it will have the same effect.

Furthermore, the control panel side element 7 of the multicore fiber connector 8 of the present invention has a light emitting terminal 10 and a light receiving terminal 1 of the control panel 12.
It can also be installed in position 1.

Effects of the Invention If the multi-core fiber connector according to the present invention is used, even if the number of sensors changes by switching the tip tool, the light-receiving terminal that does not have a corresponding sensor will always be in the light-receiving state, so it can be used with various tip tools with different numbers of sensors. This makes it possible to adapt the same control panel to different types of systems without electrically switching.

[Brief explanation of drawings]

FIG. 1 shows a multi-core fiber connector according to an embodiment of the present invention and its connection diagram, and FIG. 2 shows a conventional fiber connector and its connection diagram. 1------------...---1-----Fiber sensor 2--------------- Light projecting section 3...- −−−−−・・−・−・−・Light receiving part 4−−
−−−−・−・−・・−−−−−−Sensor side multicore reciprocating fiber 5・−−−−−−−−−−−−−Sensor side element 6−・−・−・−・−・−
Jumper fiber 7−・−・−・−・・・・・・・
−Connector control panel side element 8−−−−−−−・−
・・−−−Multi-core fiber connector 9−・−・
−・−・−−−−−−One control panel side multicore reciprocating fiber 1
0・------111111---11---1 Light emitting terminal...Light receiving terminal control panel

Claims (2)

[Claims] (1) In a multicore fiber connector arranged at an intermediate position of a multicore reciprocating fiber that connects at least one fiber sensor having a light emitting part and a light receiving part and multiple sets of light emitting terminals and light receiving terminals of a control panel. , a multicore fiber connector comprising at least one jumper fiber within a sensor-side element of the connector for directly connecting fiber terminals of the element. (2) The multicore fiber connector according to claim 1, wherein the number of jumper fibers is equal to the difference between the number of combinations of light emitting terminals and light receiving terminals and the number of fiber sensors.