Optical fiber signal on-off switch

Abstract

The utility model discloses an optical fiber signal on-off switch, which comprises a switch seat, an optical fiber channel and a central mounting cavity are arranged on the switch seat, the optical fiber channel penetrates through the switch seat, an incident optical fiber connector and an emergent optical fiber connector are respectively mounted at two ends of the optical fiber channel on the switch seat, and a rotating body is rotatably mounted in the central mounting cavity. A shielding block for shielding an optical fiber channel is arranged on the rotating body, a rotating power device for driving the rotating body to rotate is arranged on the switch base, and the rotating power device drives the rotating body to rotate so that the shielding block can deflect between a shielding closing station and a shielding opening station and drives the rotating body to rotate. According to the optical fiber signal on-off switch, automatic control can be achieved, deflection of the shielding block is rapid, and therefore on-off is correspondingly quite rapid.

Description

Technical Field

[0001] This utility model relates to an optical fiber signal on / off switch, used in a dust concentration meter. Background Technology

[0002] Particulate matter dust meters utilize the principle of light scattering to detect the concentration of particulate matter in a detection chamber. For example, patent application CN202010338712.X discloses a non-destructive online detection device and method for dust particle size and concentration, which uses the principle of photoelectric conversion to detect particulate matter concentration. However, fiber optic signal on / off switches are used in the photoelectric conversion process. Utility model patent application CN207148368U discloses a guided fiber optic switch, which uses a button to switch the fiber optic connection on / off. However, this on / off method is only manual and is difficult to meet the needs of particulate matter concentration detection. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide an optical fiber signal on / off switch that can achieve automatic control, has a fast deflection of the blocking block, and a very fast on / off response, which can meet the requirements of particulate matter concentration detection.

[0004] To solve the above-mentioned technical problems, the technical solution of this utility model is: an optical fiber signal on / off switch, including a switch base, an optical fiber channel and a central mounting chamber are provided on the switch base, the optical fiber channel passes through the switch base, an incident optical fiber connector and an outgoing optical fiber connector are respectively installed at both ends of the optical fiber channel on the switch base, a rotating body is rotatably installed in the central mounting chamber, a blocking block is provided on the rotating body to block the optical fiber channel, and a rotational power device is provided on the switch base to drive the rotating body to rotate, the rotational power device drives the rotating body to rotate so that the blocking block deflects between a blocking closed position and an opening position.

[0005] As a preferred embodiment, the rotational power device is a drive motor, which is connected to the rotating body in a transmission manner.

[0006] As a preferred embodiment, the rotating power device is a drive motor, the rotating body is the inner rotor of the drive motor, the blocking block is fixed on the inner rotor, a wire harness is wound on the inner rotor, a stator magnet is embedded in the outer periphery of the central mounting chamber inside the switch holder, the inner rotor and the stator magnet together constitute the drive motor, the switch holder is provided with a connector, and the connector is provided with pins for connecting to the wire harness.

[0007] As a preferred embodiment, the rotating power device is a rotating electromagnet, the rotating part of the rotating electromagnet constitutes the rotating body, the switch base is provided with a connector, and the wire harness pins of the rotating electromagnet are disposed in the connector.

[0008] As a preferred embodiment, the switch holder includes a switch holder body and a first end plate and a second end plate detachably fixed to both ends of the switch holder body. The switch holder body is provided with the central mounting chamber. The first end plate is provided with the connector. The first end plate and the second end plate are respectively provided with a first optical fiber mounting hole and a second optical fiber mounting hole. The first optical fiber mounting hole and the second optical fiber mounting hole are provided with a first threaded hole segment and a second threaded hole segment. The switch holder body is also provided with an intermediate optical fiber mounting hole. The first optical fiber mounting hole, the intermediate optical fiber mounting hole and the second optical fiber mounting hole are coaxially arranged and cooperate to form the optical fiber channel. The incident optical fiber connector and the outgoing optical fiber connector are respectively threadedly connected to the first threaded hole segment and the second threaded hole segment. The blocking block is located between the first threaded hole segment and the intermediate optical fiber mounting hole or the second threaded hole segment and the intermediate optical fiber mounting hole.

[0009] As a preferred embodiment, the switch base body is provided with a limiting groove, the blocking block is located in the limiting groove, one end of the limiting groove is a limiting end, and the blocking block blocks the optical fiber channel when it cooperates with the limiting end.

[0010] As a preferred embodiment, the central mounting chamber includes a first mounting chamber and a second mounting chamber. The first mounting chamber is connected to the limiting groove. The diameter of the first mounting chamber is larger than that of the second mounting chamber and forms a positioning step. The rotating electromagnet is installed in the second mounting chamber.

[0011] After adopting the above technical solution, the effect of this utility model is as follows: The fiber optic signal on / off switch includes a switch base, on which an optical fiber channel and a central mounting chamber are provided. The optical fiber channel passes through the switch base, and an incident optical fiber connector and an outgoing optical fiber connector are respectively installed at both ends of the optical fiber channel on the switch base. A rotating body is rotatably installed in the central mounting chamber, and a blocking block is provided on the rotating body to block the optical fiber channel. A rotational power device is provided on the switch base to drive the rotating body to rotate. The rotational power device drives the rotating body to rotate, causing the blocking block to deflect between a blocking closed position and an opening position. Therefore, the rotation of the rotating body can be driven by the rotational power device, thereby controlling the deflection of the blocking block between the blocking closed position and the opening position, realizing the on / off of the optical fiber signal. This fiber optic signal on / off switch can achieve automatic control, and the deflection of the blocking block is fast, so the on / off response is very fast.

[0012] Furthermore, since the rotating power device is a drive motor, the rotating body is the inner rotor of the drive motor, the blocking block is fixed on the inner rotor, the inner rotor is wound with a wire harness, and the stator magnet is embedded in the outer periphery of the central mounting chamber inside the switch base, the inner rotor and the stator magnet together constitute the drive motor, the switch base is provided with a connector, and the connector is provided with pins for connecting to the wire harness, thus the structure of the fiber optic signal on / off switch is further simplified and the overall size is smaller.

[0013] Furthermore, since the rotating power device is a rotating electromagnet, the rotating part of the rotating electromagnet constitutes the rotating body. The switch base is provided with a connector, and the wire harness pins of the rotating electromagnet are located in the connector. The blocking block of the rotating electromagnet deflects faster and is easier to control.

[0014] Furthermore, since the switch holder includes a switch holder body and a first end plate and a second end plate detachably fixed to both ends of the switch holder body, the switch holder body is provided with the central mounting chamber, the first end plate is provided with the connector, and the first end plate and the second end plate are respectively provided with a first optical fiber mounting hole and a second optical fiber mounting hole. The first optical fiber mounting hole and the second optical fiber mounting hole are provided with a first threaded hole segment and a second threaded hole segment. The switch holder body is also provided with a middle optical fiber mounting hole. The first optical fiber mounting hole, the middle optical fiber mounting hole and the second optical fiber mounting hole are coaxially arranged and cooperate to form the optical fiber channel. The incident optical fiber connector and the outgoing optical fiber connector are respectively threadedly connected to the first threaded hole segment and the second threaded hole segment. The blocking block is located between the first threaded hole segment and the middle optical fiber mounting hole or the second threaded hole segment and the middle optical fiber mounting hole. Therefore, the switch holder adopts a split design, which is easy to manufacture and facilitates the forming of the first optical fiber mounting hole, the middle optical fiber mounting hole and the second optical fiber mounting hole.

[0015] Furthermore, since the switch base body is provided with a limiting groove, the blocking block is located in the limiting groove, and one end of the limiting groove is a limiting end. When the blocking block cooperates with the limiting end, it blocks the optical fiber channel. Therefore, the limiting groove can be used to limit the blocking block and ensure that the deflection position of the blocking block is accurate.

[0016] Furthermore, since the central mounting chamber includes a first mounting chamber and a second mounting chamber, the first mounting chamber is connected to the limiting groove, the diameter of the first mounting chamber is larger than that of the second mounting chamber and forms a positioning step, and the rotating electromagnet is installed in the second mounting chamber, the installation of the rotating electromagnet is very convenient. It only needs to be inserted into the housing from the first mounting chamber, and the action of the rotating electromagnet driving the blocking block is also faster. Attached Figure Description

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0018] Figure 1 This is a perspective view of an embodiment of the present utility model;

[0019] Figure 2 This is a front view of an embodiment of the present utility model;

[0020] Figure 3 yes Figure 2 Sectional view along AA;

[0021] Figure 4 This is a schematic diagram of the structure of the switch base body, the rotating electromagnet, and the first end plate according to an embodiment of the present utility model;

[0022] Figure 5 This is an exploded view of an embodiment of the present utility model;

[0023] Figure 6 This is a schematic diagram of the structure of the rotating electromagnet according to an embodiment of the present invention;

[0024] Figure 7 This is a schematic diagram of the structure of the switch base body according to an embodiment of the present utility model;

[0025] In the attached diagram: 1. Incident fiber optic connector; 2. Outgoing fiber optic connector; 3. Rotating body; 4. Stop block; 5. Switch base body; 6. First end plate; 7. Second end plate; 8. First fiber optic mounting hole; 9. Second fiber optic mounting hole; 10. Intermediate fiber optic mounting hole; 11. Limiting groove; 12. First mounting chamber; 13. Second mounting chamber; 14. Pin. Detailed Implementation

[0026] The present invention will be further described in detail below through specific embodiments.

[0027] like Figure 1-7 As shown, an optical fiber signal on / off switch includes a switch base, on which an optical fiber channel and a central mounting chamber are provided. The optical fiber channel passes through the switch base. An incident optical fiber connector 1 and an outgoing optical fiber connector 2 are respectively installed at both ends of the optical fiber channel on the switch base. A rotating body 3 is rotatably installed in the central mounting chamber. A blocking block 4 is provided on the rotating body 3 to block the optical fiber channel. A rotational power device is provided on the switch base to drive the rotating body 3 to rotate, causing the blocking block 4 to deflect between a blocking off position and an on position.

[0028] In this embodiment, the rotational power device is a rotating electromagnet, the rotating part of the rotating electromagnet constitutes the rotating body 3, the switch base is provided with a connector, and the wire harness pin 14 of the rotating electromagnet is disposed in the connector.

[0029] In this embodiment, the switch base includes a switch base body 5 and a first end plate 6 and a second end plate 7 detachably fixed to both ends of the switch base body 5. The switch base body 5 is provided with the central mounting chamber. The first end plate 6 is provided with the connector. The first end plate 6 and the second end plate 7 are respectively provided with a first optical fiber mounting hole 8 and a second optical fiber mounting hole 9. The first optical fiber mounting hole 8 and the second optical fiber mounting hole 9 are provided with a first threaded hole segment and a second threaded hole segment. The switch base body 5 is also provided with an intermediate optical fiber mounting hole 10. The first optical fiber mounting hole 8, the intermediate optical fiber mounting hole 10 and the second optical fiber mounting hole 9 are coaxially arranged and cooperate to form the optical fiber channel. The incident optical fiber connector 1 and the outgoing optical fiber connector 2 are respectively threadedly connected to the first threaded hole segment and the second threaded hole segment. The blocking block 4 is located between the first threaded hole segment and the intermediate optical fiber mounting hole 10 or the second threaded hole segment and the intermediate optical fiber mounting hole 10.

[0030] The switch base body 5 is provided with a limiting groove 11. The blocking block 4 is located in the limiting groove 11, and one end of the limiting groove 11 is a limiting end. When the blocking block 4 cooperates with the limiting end, it blocks the optical fiber channel. The central mounting chamber includes a first mounting chamber 12 and a second mounting chamber 13. The first mounting chamber 12 is connected to the limiting groove 11. The diameter of the first mounting chamber 12 is larger than that of the second mounting chamber 13, forming a positioning step. The rotating electromagnet is installed in the second mounting chamber 13. The blocking block 4 is located on the rotating part of the rotating electromagnet and is located in the limiting groove 11. The pin 14 extends into the connector.

[0031] During manufacturing, the switch base of this application adopts a split design, which is easy to manufacture and facilitates the forming of the first optical fiber mounting hole 8, the middle optical fiber mounting hole 10, and the second optical fiber mounting hole 9. During installation, the rotating electromagnet is very easy to install; it simply needs to be inserted into the housing through the first mounting chamber 12. The rotating electromagnet also drives the blocking block 4 to move more quickly. In use, the rotating body 3 of the rotating electromagnet rotates, thereby controlling the deflection of the blocking block between the blocking closed position and the opening position, realizing the on / off of the optical fiber signal. The limiting groove 11 can limit the blocking block 4, ensuring the accurate deflection position of the blocking block 4. This optical fiber signal on / off switch can achieve automatic control, with a very fast on / off response and is easy to control.

[0032] Of course, the aforementioned rotary power device can also be a drive motor, which is connected to the rotating body 3 for transmission. The drive motor can also have other structures. For example, the rotating body 3 is an inner rotor, the blocking block 4 is fixed on the inner rotor, a wire harness is wound on the inner rotor, and a stator magnet is embedded in the outer periphery of the central mounting chamber inside the switch holder. The inner rotor and the stator magnet together constitute the rotary power device. The switch holder is provided with a connector, and the connector is provided with pins 14 for connecting to the wire harness.

[0033] The pneumatic system, servo motor and other actuators, gear transmission mechanism, and lead screw and nut mechanism mentioned in this embodiment are all current conventional technologies. The 5th edition of the "Mechanical Design Handbook" published in Beijing in April 2008 (5th edition, 28th printing) details the specific structure, principle, and other designs of cylinders, motors, and other transmission mechanisms, which are existing technologies with clear and straightforward structures. The 3rd edition of "Modern Practical Pneumatic Technology" SMC training materials published by Machinery Industry Press on August 1, 2008, details vacuum components, gas circuits, and program control, indicating that the pneumatic structure in this embodiment is also existing technology and clear and straightforward. The book "Motor Drive and Speed ​​Regulation" published by Chemical Industry Press on July 1, 2015, also details motor control and limit switches. Therefore, the circuit and pneumatic connections are clear.

[0034] The above-described embodiments are merely preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model. Any modifications and alterations to the technical solution of the present utility model without departing from its design spirit shall fall within the protection scope defined by the claims of the present utility model.

Claims

1. A fiber optic signal on / off switch, characterized in that: The device includes a switch base, on which an optical fiber channel and a central mounting chamber are provided. The optical fiber channel runs through the switch base, and an incident optical fiber connector and an outgoing optical fiber connector are respectively installed at both ends of the optical fiber channel on the switch base. A rotating body is rotatably installed in the central mounting chamber, and a blocking block is provided on the rotating body to block the optical fiber channel. A rotational power device is provided on the switch base to drive the rotating body to rotate, and the rotational power device drives the rotating body to rotate, causing the blocking block to deflect between a blocking closed position and an opening position.

2. The fiber optic signal on / off switch as described in claim 1, characterized in that: The rotational power device is a drive motor, which is connected to the rotating body in a transmission manner.

3. The fiber optic signal on / off switch as described in claim 1, characterized in that: The rotating power device is a drive motor, the rotating body is the inner rotor of the drive motor, the blocking block is fixed on the inner rotor, the inner rotor is wound with a wire harness, the switch base has a stator magnet embedded in the outer periphery of the central mounting chamber, the inner rotor and the stator magnet together constitute the drive motor, the switch base is provided with a connector, and the connector is provided with pins for connecting to the wire harness.

4. The fiber optic signal on / off switch as described in claim 1, characterized in that: The rotating power device is a rotating electromagnet, and the rotating part of the rotating electromagnet constitutes the rotating body. The switch base is provided with a connector, and the wire harness pins of the rotating electromagnet are located in the connector.

5. The fiber optic signal on / off switch as described in claim 4, characterized in that: The switch base includes a switch base body and a first end plate and a second end plate detachably fixed to both ends of the switch base body. The switch base body is provided with the central mounting chamber. The first end plate is provided with the connector. The first end plate and the second end plate are respectively provided with a first optical fiber mounting hole and a second optical fiber mounting hole. The first optical fiber mounting hole and the second optical fiber mounting hole are provided with a first threaded hole segment and a second threaded hole segment. The switch base body is also provided with an intermediate optical fiber mounting hole. The first optical fiber mounting hole, the intermediate optical fiber mounting hole and the second optical fiber mounting hole are coaxially arranged and cooperate to form the optical fiber channel. The incident optical fiber connector and the outgoing optical fiber connector are respectively threadedly connected to the first threaded hole segment and the second threaded hole segment. The blocking block is located between the first threaded hole segment and the intermediate optical fiber mounting hole or the second threaded hole segment and the intermediate optical fiber mounting hole.

6. The fiber optic signal on / off switch as described in claim 5, characterized in that: The switch base body is provided with a limiting groove, the blocking block is located in the limiting groove, one end of the limiting groove is a limiting end, and the blocking block blocks the optical fiber channel when it cooperates with the limiting end.

7. The fiber optic signal on / off switch as described in claim 6, characterized in that: The central mounting chamber includes a first mounting chamber and a second mounting chamber. The first mounting chamber is connected to the limiting groove. The diameter of the first mounting chamber is larger than that of the second mounting chamber and forms a positioning step. The rotating electromagnet is installed in the second mounting chamber.

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