Slip ring type coupling electromagnetic clutch mechanism of landing gear switch control handle

Abstract

The invention discloses a slip ring type coupling electromagnetic clutch mechanism of an undercarriage switch control handle. The slip ring type coupling electromagnetic clutch mechanism comprises a power output part used for being connected with an undercarriage switch handle, a power input part used for being connected with a power source and a coupling electromagnetic clutch device arranged between the power output part and the power input part. The coupling electromagnetic clutch device disconnects the power output part and the power input part in a manual mode and connects the power output part and the power input part in a follow-up mode, and the coupling electromagnetic clutch device can integrally serve as a coupler to rotate without limitation in the follow-up mode. The device has the beneficial effects that the device can be used as a coupling for connecting the power output part and the power input part so as to realize follow-up control on a switch handle of the undercarriage through torque transmission; and the clutch can also be used as a clutch to disconnect the power output part and the power input part so as to disconnect torque transmission and realize manual control on the switch handle of the undercarriage.

Description

Technical Field

[0001] The invention relates to a landing gear switch operating handle control, in particular to a slip ring type coupling electromagnetic clutch mechanism for the landing gear switch operating handle. Background Art

[0002] The landing gear control handle on a two-seater aircraft has both manual and follower modes. If the control handle on one seat is in manual mode, the control handle on the other seat is in follower mode. This ensures that the two landing gear control handles operate synchronously, preventing ground crew (or pilots) from having to operate them again after landing. To enable the switching of the two-seater aircraft's landing gear control handle between manual and follower modes, a coupling electromagnetic clutch mechanism is urgently needed that can disconnect the power take-off and power input in manual mode and connect them in follower mode. Summary of the Invention

[0003] The purpose of the present invention is to solve the problems of the prior art and to provide a novel slip-ring coupling electromagnetic clutch mechanism for a landing gear switch operating handle.

[0004] To achieve the above objectives, the present invention provides a technical solution: a slip-ring coupling electromagnetic clutch mechanism for a landing gear switch operating handle, comprising: a power output for coupling the landing gear switch handle, a power input for coupling the power source, and a coupling electromagnetic clutch device between the power output and the power input. The coupling electromagnetic clutch device disconnects the power output and the power input in manual mode and connects them in follower mode. The coupling electromagnetic clutch device comprises an electromagnetic clutch, a movable magnetic plate, a compression spring, a square rotor, and a flange arranged in sequence along the axial direction. The electromagnetic clutch, the movable magnetic plate, and the flange share a common rotation axis and rotate synchronously. The electromagnetic clutch comprises a clutch housing, an electromagnetic coil within the clutch housing, and a compression spring. The clutch housing has a clutch inner hole, the gear shaft of the power input unit extends into the clutch inner hole and is capable of driving the clutch housing to rotate. The clutch housing has a compression spring mounting hole, the square rotor has a rotor inner hole, the square shaft sleeve is located within the rotor inner hole, the square shaft sleeve has a waist-shaped hole, and the gear shaft of the power output unit extends into the waist-shaped hole, and the two are axially matched. The compression spring is located between the clutch housing and the movable magnetic plate. When the electromagnetic coil is energized, the electromagnetic force generated by the electromagnetic coil attracts the movable magnetic plate, allowing the movable magnetic plate to overcome the elastic force of the compression spring and move toward the clutch housing until it abuts the clutch housing surface. At this time, the square rotor is in a non-compressed state and can rotate freely relative to the movable magnetic plate. When the electromagnetic coil is de-energized, the movable magnetic plate is separated from the clutch housing by the elastic force of the compression spring, and the movable magnetic plate presses the square rotor against the flange surface, at which time the square rotor cannot rotate freely relative to the movable magnetic plate.

[0005] The coupling electromagnetic clutch device further includes: a slip ring component and a slip ring wiring component, the slip ring component is fixed to the clutch housing, the slip ring component and the clutch housing have a common rotation axis, the slip ring component has an insulating ring and a conductive ring, the insulating ring separates the clutch housing and the conductive ring, the conductive ring is electrically connected to the electromagnetic coil, the slip ring wiring component has a wiring terminal, the wiring terminal abuts against the conductive ring; wherein the wiring terminal is energized in manual mode and de-energized in follow-up mode.

[0006] The insulating ring is located outside the clutch housing. The outer peripheral surface of the insulating ring has a ring groove, and the conductive ring is inside the ring groove, so that the insulating ring separates the clutch housing and the conductive ring.

[0007] The connection terminal has two elastic support legs, which are arranged in an "eight" shape along the circumferential direction of the conductive ring and are mutually against the outer peripheral surface of the conductive ring.

[0008] The conductive ring is embedded in the ring groove, so that the ring groove defines an accommodating space for accommodating the conductive ring and a guiding space for guiding the connecting terminal.

[0009] Compared with the prior art, the present invention has at least the following advantages: 1. It has a simple structure, compact layout, small space requirements, and reliable operation. 2. The coupling electromagnetic clutch device can function as a coupling to connect the power output and power input to achieve follow-up control of the landing gear switch handle through torque transmission, and can also function as a clutch to disconnect the power output and power input to achieve manual control of the landing gear switch handle. 3. It has a wire entanglement prevention function. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 Schematic diagram of the structure of an embodiment of the present invention.

[0011] Figure 2 Schematic diagram of the structure of the electromagnetic clutch, movable magnetic plate and compression spring in an embodiment of the present invention.

[0012] Figure 3 Schematic diagram of the structure of the flange in an embodiment of the present invention (front view).

[0013] Figure 4 Schematic diagram of the structure of the flange in an embodiment of the present invention (backward facing).

[0014] Figure 5 Schematic diagram of the structure of the first gear shaft according to an embodiment of the present invention.

[0015] Figure 6 Schematic diagram of the structure of the second gear shaft according to an embodiment of the present invention.

[0016] Figure 7 Schematic diagram of the structure of the slip ring component according to an embodiment of the present invention.

[0017] Figure 8 Schematic diagram of radial cross section of a slip ring component according to an embodiment of the present invention. DETAILED DESCRIPTION

[0018] The present invention will be further described in detail below through specific embodiments in conjunction with the accompanying drawings. It should be noted that the description of these embodiments is intended to facilitate understanding of the present invention and does not constitute a limitation of the present invention. In addition, the technical features involved in the various embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.

[0019] See Figures 1 to 6 , shown in the figure is a slip ring coupling electromagnetic clutch mechanism of a landing gear switch operating handle.

[0020] The slip-ring coupling electromagnetic clutch mechanism includes a power take-off (PTO) for coupling to the landing gear switch handle, a power input (PTO) for coupling to a power source, and a coupling electromagnetic clutch device between the PTO and PTO. In manual mode, the coupling electromagnetic clutch device disconnects the PTO from the PTO, effectively acting as a clutch and making the PTO independent of the PTO. The operator then controls the landing gear switch handle for manual control. In follower mode, the coupling electromagnetic clutch device connects the PTO and PTO, effectively acting as a coupling (the entire device acts as a coupling, allowing unrestricted rotation). The PTO and PTO are connected as a single unit, allowing the power source to control the landing gear switch handle for follower control.

[0021] Specifically, the coupling electromagnetic clutch device comprises an electromagnetic clutch 4, a movable magnetic conductive plate 5, a square rotor 6, a square shaft sleeve 9, a flange 10, etc., which are arranged in sequence along the axial direction.

[0022] The electromagnetic clutch 4, the movable magnetic plate 5, and the flange 10 share a common rotational axis and rotate synchronously. The movable magnetic plate 5 has a positioning slot 501 and a magnetic plate inner hole 502. A positioning sleeve 8 is located within the positioning slot 501. The flange 10 is secured to the clutch housing 401 via screws 11 and the positioning sleeve 8, limiting the rotational freedom of the movable magnetic plate 5.

[0023] The electromagnetic clutch 4 comprises a clutch housing 401 and an electromagnetic coil 406 and a compression spring 17 within the clutch housing 401. The clutch housing 401 comprises a clutch inner bore 402, a keyway 403, a threaded hole 404, and a compression spring mounting hole 405. The first gear shaft 2 of the power input unit extends into the clutch inner bore 402 and, through a key connection, can drive the clutch housing 401 to rotate. The compression spring 17 is located between the clutch housing 401 and the movable magnetic plate 5. When the electromagnetic coil 406 is energized, the electromagnetic force generated by the electromagnetic coil 406 attracts the movable magnetic plate 5, allowing the movable magnetic plate 5 to overcome the elastic force of the compression spring 17 and move toward the clutch housing 401 until it abuts the surface of the clutch housing 401. At this point, the square rotor 6 is in a non-compressed state and can freely rotate relative to the movable magnetic plate 5. If the electromagnetic coil 406 is in the power-off state, the movable magnetic plate 5 is separated from the clutch housing 401 under the elastic force of the compression spring 17, and the movable magnetic plate 5 presses the square rotor 6 against the surface of the flange 10. At this time, the square rotor 6 cannot rotate freely relative to the movable magnetic plate 5.

[0024] The square rotor 6 has a rotor inner hole 601. The square sleeve 9 is located within the rotor inner hole 601. The square sleeve 9 has a waist-shaped hole 901. The gear shaft 14 of the power output unit extends into the waist-shaped hole 901 and the two shafts mate with each other. The square sleeve 9 is used to output torque.

[0025] Furthermore, the square rotor 6 secures the flange 10, the square rotor 6, the square shaft sleeve 9, and the movable magnetic plate 5 to the clutch housing 401 via screws 11 and positioning sleeves 8. The flange 10 is provided with a circular hole 1007 on the left side and a cylindrical boss 1003 on the right side. The boss 1003 has a circular hole 1004 extending through the flange and can be used to mount a second bearing 12. A portion of the square shaft sleeve 9 is positioned within the square rotor 6, while another portion is positioned within the circular hole 1007 on the left side of the flange 10. The three positioning sleeves 8 are respectively positioned within the three positioning slots of the movable magnetic plate 5. The flange 10 rotates synchronously with the three screws 11, the three positioning sleeves 8, the movable magnetic plate 5, and the electromagnetic clutch housing 401, with the center of rotation being the coaxial center of rotation of the clutch housing 401, the movable magnetic plate 5, and the flange 10.

[0026] Furthermore, when the electromagnetic coil 406 is in the de-energized state, the movable magnetic plate 5, under the elastic force of the compression spring 17, presses the square rotor 6 against the left surface 1006 of the flange 10. At this time, the square rotor 6 cannot freely rotate relative to the movable magnetic plate. When the clutch housing 401 rotates, the clutch housing 401 drives the flange 10, the screw 11, the positioning sleeve 8, and the movable magnetic plate 5 to rotate. Under the positive pressure of the compression spring 17, static friction exists between the movable magnetic plate 5 and the square rotor 6, and between the square rotor 6 and the flange 10. This static friction drives the square rotor 6 to rotate, and in turn drives the square shaft sleeve 9 to rotate, thereby connecting the power input and power output units. When the electromagnetic coil 406 is in the energized state, the electromagnetic force generated by the electromagnetic coil 406 attracts the movable magnetic plate 5 to move toward the clutch housing 401 until it is attached to the surface of the clutch housing 401. At this time, the square rotor 6 is in a non-compression state, that is, the static friction force disappears, and the square rotor 6 and the square shaft sleeve 9 can rotate independently and freely relative to the movable magnetic plate 5, thereby disconnecting the power output part and the power input part.

[0027] Preferably, the gear shafts of the power input unit and / or the power output unit may be equipped with support bearings. These support bearings are used to support the gear shafts. The first gear shaft 2 is equipped with a first support bearing 1. The first support bearing 1 is mounted on the left side of the first gear shaft 2 and supports the first gear shaft 2. A keyway 201 is provided on the right cylindrical surface of the first gear shaft 2. This keyway 201 is used to receive a flat key and transmit torque. The first gear shaft 2 is connected to the electromagnetic clutch housing 401 via the flat key. The right end of the first gear shaft 2 is inserted into the central hole of the electromagnetic clutch housing. The first gear shaft 2 and the electromagnetic clutch 4 share a common rotation center and rotate synchronously. The second gear shaft 14 is equipped with a third support bearing 13 and a fourth support bearing 15. The third and fourth support bearings 13 and 15 are located at the axial ends of the second gear shaft 14, respectively. These third and fourth support bearings 13 and 15 support and axially position the second gear shaft 14. The left end of the second gear shaft 14 passes through a circular hole extending through the flange 10. The cylindrical surface at the left end of the second gear shaft 14 is provided with a flat structure, which can pass through the square sleeve 6 and rotate synchronously with the square sleeve 6. The left end surface of the second gear shaft 14 is provided with a threaded hole, and the square sleeve 6 can be fixed to the left end surface of the second gear shaft 14 by screws.

[0028] Preferably, the gear parts of the power input part and / or the power output part can use spur gears, helical gears, bevel gears, worm gears, worm gears, etc. The gear modules can be small module specifications or large module specifications.

[0029] Preferably, the matching manner between the gear shaft of the power input part and the clutch housing 401 includes but is not limited to: a spline form and a diamond structure form.

[0030] Preferably, the matching modes of the square rotor 6 and the square shaft sleeve 9 include but are not limited to: a spline form, a diamond structure form, and a flat structure form.

[0031] Preferably, the coupling electromagnetic clutch device further includes a slip ring component 3 and a slip ring connection component 16. The slip ring component 3 is fixed to the clutch housing 401. The slip ring component 3 and the clutch housing 401 share a common rotation axis. The slip ring component 3 includes an insulating ring 301 and a conductive ring 302. The insulating ring 301 separates the clutch housing 401 from the conductive ring 302 to insulate the clutch housing 401. The slip ring connection component 16 includes a connection terminal 1601 and an insulating cover 1602. The connection terminal 1601 is molded into the insulating cover 1602. The exposed portion of the connection terminal 1601 is used to connect a power cord. The connection terminal 1601 abuts against the conductive ring 302. The conductive ring 302 is electrically connected to the electromagnetic coil 406. The connection terminal 1601 is energized in manual mode and de-energized in follower mode.

[0032] See Figure 7 and Figure 8 The insulating ring 301 is located on the outer circumference of the clutch housing 401. The outer circumference of the insulating ring 301 has an annular groove. The conductive ring 302 is located within the annular groove, thereby separating the clutch housing 401 from the conductive ring 302. Furthermore, the terminal 1601 has two elastic support legs 1604. These two elastic support legs 1604 are arranged in an "eight" shape along the circumference of the conductive ring 302 and abut against the outer circumference of the conductive ring 302, ensuring that the terminal 1601 and the conductive ring 302 reliably abut against each other during rotation of the clutch housing 401 and preventing wire entanglement. Furthermore, the conductive ring 302 is embedded within the annular groove, defining a storage space for the conductive ring 302 and a guide space 303 for guiding the terminal 1601.

[0033] The above merely describes the embodiments of the present invention, and while the description is relatively specific and detailed, it should not be construed as limiting the scope of the patent. It should be noted that a person skilled in the art could make various modifications and improvements without departing from the spirit of the present invention, all of which fall within the scope of protection of the present invention. Therefore, the scope of protection of the patent for this invention shall be determined by the appended claims.

Claims

1. A landing gear switch operating handle slip ring coupling electromagnetic clutch mechanism, characterized in that: include: A power output part for connecting the landing gear switch handle, a power input part for connecting the power source, and a coupling electromagnetic clutch device between the power output part and the power input part, wherein the coupling electromagnetic clutch device disconnects the power output part and the power input part in manual mode and connects the power output part and the power input part in follow-up mode.

2. The landing gear switch operating handle slip ring coupling electromagnetic clutch mechanism according to claim 1, characterized in that: The coupling electromagnetic clutch device comprises an electromagnetic clutch, a movable magnetic plate, a compression spring, a square rotor and a flange arranged in sequence along the axial direction. The electromagnetic clutch, the movable magnetic plate and the flange have a common rotation axis and rotate synchronously. The electromagnetic clutch comprises a clutch housing and an electromagnetic coil and a compression spring inside the clutch housing. The clutch housing has a clutch inner hole. The gear shaft of the power input part extends to the inside of the clutch inner hole and can drive the clutch housing to rotate. The clutch housing has a compression spring mounting hole. The square rotor has a rotor inner hole. The square shaft sleeve is inside the rotor inner hole. The square shaft sleeve has a waist-shaped hole. The gear shaft of the power output part extends to the waist-shaped hole. The compression spring is between the clutch housing and the movable magnetic plate. If the electromagnetic coil is in the energized state, the electromagnetic force generated by the electromagnetic coil attracts the movable magnetic plate, so that the movable magnetic plate can overcome the elastic force of the compression spring and move toward the clutch housing until it is attached to the surface of the clutch housing. At this time, the square rotor is in a non-compressed state and can rotate freely relative to the movable magnetic plate. If the electromagnetic coil is in the de-energized state, the movable magnetic plate is separated from the clutch housing under the action of the elastic force of the compression spring, and the movable magnetic plate presses the square rotor against the surface of the flange. At this time, the square rotor cannot rotate freely relative to the movable magnetic plate.

3. The landing gear switch operating handle slip ring coupling electromagnetic clutch mechanism according to claim 1, characterized in that: The coupling electromagnetic clutch device further includes: a slip ring component and a slip ring wiring component, the slip ring component is fixed to the clutch housing, the slip ring component and the clutch housing have a common rotation axis, the slip ring component has an insulating ring and a conductive ring, the insulating ring separates the clutch housing and the conductive ring, the conductive ring is electrically connected to the electromagnetic coil, the slip ring wiring component has a wiring terminal, the wiring terminal abuts against the conductive ring; wherein the wiring terminal is energized in manual mode and de-energized in follow-up mode.

4. The slip-ring coupling electromagnetic clutch mechanism of the landing gear switch operating handle according to claim 3, characterized in that: The insulating ring is located outside the clutch housing. The outer peripheral surface of the insulating ring has a ring groove, and the conductive ring is inside the ring groove, so that the insulating ring separates the clutch housing and the conductive ring.

5. The landing gear switch operating handle slip ring coupling electromagnetic clutch mechanism according to claim 4, characterized in that: The connection terminal has two elastic support legs, which are arranged in an "eight" shape along the circumferential direction of the conductive ring and are mutually against the outer peripheral surface of the conductive ring.

6. The landing gear switch operating handle slip ring coupling electromagnetic clutch mechanism according to claim 4 or 5, characterized in that: The conductive ring is embedded in the ring groove, so that the ring groove defines an accommodating space for accommodating the conductive ring and a guiding space for guiding the connecting terminal.

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