A variable effect electric device

Abstract

This invention belongs to the technical field of aviation-related adjustment devices, specifically referring to an electric adjustment device. It is an adjustment device used in space-constrained environments, providing a three-position neutral illumination zone. The illumination zone travel adjustment is simple, providing sufficient illumination range for pilots to easily find the neutral position. It features a compact structure, small size, and high reliability, and can be widely used in the structural design of electric adjustment devices for control stick force and flight control systems involved in automatic aircraft trim.

Description

Technical Field

[0001] This invention belongs to the technical field of aviation-related tuning devices, specifically referring to a tuning electric device. Background Technology

[0002] Currently, for fine-tuning flight control systems to stabilize aircraft attitude and heading, conventional tuning devices use friction methods such as conductive slip rings to create a neutral bright area at the neutral position. However, this method leads to changes in the neutral bright area after wear. Therefore, a small, lightweight, compact, three-position tuning electric device with a neutral bright area is needed within a limited space. Summary of the Invention

[0003] The purpose of this invention is to address the shortcomings of existing technologies by providing an adjustment electric device. This device is a structural design for an adjustment electric device that integrates the control stick force and flight control system with automatic aircraft trim. It is small in size, lightweight, easy to debug, and can simply, effectively, and reliably achieve its intended function.

[0004] The technical solution of the present invention: In order to achieve the above objectives, an adjustable electric device is proposed, comprising a brake clutch, a motor, a first housing, a three-stage planetary reducer, a support assembly, a stroke control device, a second housing, an output shaft assembly, and a connector;

[0005] The brake clutch and the motor are integrated. The motor is mounted on the first housing with screws. The gear shaft of the motor meshes with the three-stage planetary reducer. The three-stage planetary reducer is installed in the cavity of the first housing. The three-stage planetary reducer meshes with the support assembly via gears. The support assembly and the stroke control device are respectively mounted on the second housing with screws. The support assembly and the output shaft assembly are connected by gear meshing. The output shaft assembly passes through the first housing and the second housing. The output stroke of the output shaft assembly is controlled by the stroke control device. The connector is connected to the output shaft assembly via an external thread for easy adjustment. An external output mechanism is connected through the connector.

[0006] The motor drives the output shaft to rotate, transmitting torque to the three-stage planetary reducer. The three-stage planetary reducer transmits torque to the output shaft assembly through the bracket assembly, converting rotational motion into linear motion. The stroke of the output shaft can be controlled by adjusting the stroke control device according to actual needs. In one possible embodiment, braking torque is provided by the brake clutch after reaching the target position.

[0007] In one possible embodiment, the output shaft assembly includes a hinge joint seat, a shaft assembly nut, a disc spring, a shaft assembly bushing, a shaft assembly washer, a shaft assembly steel ball, a shaft assembly gear, a ball screw, a screw nut, a sleeve, a first retaining ring, and a second retaining ring. The screw nut is fitted onto the ball screw to form a roller screw pair. The roller screw pair is disposed within the sleeve. One end of the ball screw pair is supported by the first and second retaining rings installed at the end of the sleeve. The opposite end of the ball screw is equipped with a shaft assembly gear, which is connected to the shaft assembly gear fitted inside the sleeve. The bearing is supported by the bushing and the steel balls of the shaft assembly; the shaft assembly gear is pressed against the stepped shaft of the lead screw pair through the left end face, and the right end face is axially limited by the shaft assembly nut pressed against the shaft assembly gear. The outer surface of the toothless end of the shaft assembly gear is provided with a groove. The two shaft assembly bushings are symmetrically distributed on both sides of the groove. A ring of shaft assembly steel balls is installed between the grooves of the shaft assembly gear. The axial clearance of the adjustment device can be adjusted by adding shaft assembly shims between the shaft assembly bushings. A butterfly spring is installed in sequence at one end of the bushing. The hinge joint seat is threadedly connected to the sleeve and is pressed against the butterfly spring.

[0008] In one possible embodiment, the support assembly includes a first locking washer, a support assembly nut, a worm gear, a first gear, a support assembly small shaft, a double gear, a second gear, a support assembly bolt, a guide, a support assembly bushing, and a support assembly bracket. The support assembly small shaft passes through the first gear and the worm gear and is mounted on the bracket, with its axial end secured sequentially by the first locking washer and the support assembly nut. The support assembly bushing is fixed to the support assembly bracket by screws, and the guide passes through the support assembly bushing and is rotatably connected to it via a bearing. One side of the guide is connected to the three-stage planetary reducer via gear meshing, and the other side is connected to one of the gears in the double gear, referred to as the first double gear. The first double gear meshes with the second gear. The other gear in the double gear is referred to as the second double gear, which meshes with the first gear. The double gear and the second gear are fixed to the support assembly bracket by bolts.

[0009] In one possible embodiment, the stroke control device includes a second bracket, an extension limit switch, a first washer, a retraction limit switch, a neutral position switch, a first nut, a first bolt, a worm gear, a second nut, a first small shaft, a second locking washer, a neutral cam, a second washer, a limit cam, a first spring plate, a second spring plate, a second washer, and a second small shaft;

[0010] The first small shaft passes sequentially through the worm gear, neutral cam, second washer, and limit cam, and is fixed to the second bracket cavity by the second nut and the second locking washer; the worm gear is connected to the worm drive, and the rotation of the worm gear drives the neutral cam and the limit cam to rotate; the first spring plate is located directly above the neutral cam, and the second spring plate is located directly above the limit cam; the first spring plate, the second washer, and the second spring plate are sequentially fitted onto the second small shaft and fixed to the second bracket cavity by the nut; the neutral position switch is located directly above the first spring plate, and the extension limit switch and the retraction limit switch are located directly above the second spring plate; two identical first bolts pass sequentially through the extension limit switch, the first washer, the retraction limit switch, and the neutral position switch, and are fixed to the second bracket cavity by the first nut.

[0011] In one possible embodiment, the neutral cam triggers the first spring plate to press the neutral position switch, emitting a neutral position signal, and the neutral bright area is set by the stroke of the first spring plate triggered by the neutral cam.

[0012] In one possible embodiment, the limit cam includes a retraction limit cam and an extension limit cam; the retraction limit cam and the extension limit cam respectively trigger the second spring plate to press the retraction limit switch and the extension limit switch, and issue a retraction limit position or extension limit signal, and the brake clutch provides braking torque according to the retraction limit position or extension limit signal.

[0013] In one possible embodiment, the protrusion of the neutral cam is a 60° triangle.

[0014] In one possible embodiment, the first spring sheet is provided with a protrusion that cooperates with the neutral cam, and the protrusion is also triangular in shape at 60°.

[0015] Preferably, the second small shaft is an eccentric shaft and is configured as a stepped shaft, with a rectangular slot on its right end face, an eccentric part in the middle, and concentric ends; the first spring sheet is disposed on the eccentric part.

[0016] Preferably, the first small shaft is a flat shaft that is larger at one end and smaller at the other end.

[0017] In one possible embodiment, one end face of the limiting cam and the neutral cam is set to hexagonal to facilitate adjustment with special tools.

[0018] Preferably, it also includes a first washer, which connects the first bolt fixing the switch to the second small shaft, so as to facilitate simultaneous tightening and fixing.

[0019] Preferably, one end of the control cable assembly is a plug, and the other end is provided with an internal thread, which is threaded to the second housing for easy disassembly.

[0020] The beneficial effects of this invention are as follows: This invention proposes a three-position adjustment device for use in spaces with limited space, providing a neutral illumination zone. The illumination zone travel adjustment is simple, and it provides a sufficient illumination range for pilots to easily find the neutral position. It has a compact structure, small size, and high reliability, and can be widely used in the structural design of electric adjustment devices for control stick force and flight control systems participating in automatic aircraft trim. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of a preferred embodiment of the electric regulating device of the present invention;

[0022] Figure 2 This is a schematic diagram of the output shaft assembly of a preferred embodiment of the present invention's adjustable electric device;

[0023] Figure 3 This is a schematic diagram of a support assembly for a preferred embodiment of the adjustable electric device of the present invention;

[0024] Figure 4 This is a schematic diagram of the stroke control device of a preferred embodiment of the present invention for an adjustable electric device;

[0025] Figure 5 This is a schematic diagram of the second small shaft (7s) of the stroke control device of a preferred embodiment of the present invention;

[0026] Figure 6 This is a schematic diagram of a neutral cam in the stroke control device of a preferred embodiment of the present invention for an adjustable electric device. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0028] like Figure 1 As shown, an adjustable electric device includes a brake clutch 1, a motor 2, a first housing 3, a three-stage planetary reducer 4, a bracket assembly 5, a stroke control device 7, a second housing 8, an output shaft assembly 11, and a connector 10.

[0029] The brake clutch 1 and the motor 2 are integrated. The motor 2 is mounted on the first housing 3 by screws. The gear shaft of the motor 2 meshes with the three-stage planetary reducer 4. The three-stage planetary reducer 4 is installed in the cavity of the first housing 3. The three-stage planetary reducer 4 meshes with the support assembly 5 by gears. The support assembly 5 and the stroke control device 7 are respectively mounted on the second housing 8 by screws. The support assembly 5 and the output shaft assembly 11 are connected by gear meshing. The output shaft assembly 10 passes through the first housing 3 and the second housing 8. The output stroke of the output shaft assembly 11 is controlled by the stroke control device 7. The connector 10 is connected to the output shaft assembly 11 by external threads for easy connector adjustment. An external output mechanism is connected through the connector 10.

[0030] The motor 2 drives the motor output shaft to rotate, transmitting torque to the three-stage planetary reducer 4. The three-stage planetary reducer 4 transmits torque to the output shaft assembly 11 through the bracket assembly 5, converting rotational motion into linear motion. The stroke control device 7 can be used to control the stroke of the output shaft according to actual needs. In one possible embodiment, the braking torque is provided by the brake clutch 1 after reaching the target position.

[0031] like Figure 2 As shown, in one possible embodiment, the output shaft assembly 11 includes a hinge joint seat 11a, a shaft assembly nut 11b, a disc spring 11c, a shaft assembly bushing 11d, a shaft assembly washer 11e, a shaft assembly steel ball 11f, a shaft assembly gear 11g, a ball screw 11h, a screw nut 11i, a sleeve 11j, a first retaining ring 11k, and a second retaining ring 11m. The screw nut 11i is fitted onto the ball screw 11h to form a roller screw pair. The roller screw pair is disposed within the sleeve 11j. One end of the ball screw pair is supported by the first retaining ring 11k and the second retaining ring 11m installed at the end of the sleeve 11j. The opposite end of the ball screw 11h is equipped with a shaft assembly gear 11g, which is supported by the sleeve 11h. The bearing inside 1j is composed of the shaft assembly bushing 11d and the shaft assembly steel ball 11f. The shaft assembly gear 11g is close to the stepped shaft of the lead screw pair through the left end face, and the right end face is axially limited by the shaft assembly nut 11b close to the shaft assembly gear 11g. The outer surface of the toothless end of the shaft assembly gear 11g is provided with a groove. The two shaft assembly bushings 11d are symmetrically distributed on both sides of the groove. A ring of shaft assembly steel balls 11f is installed between the grooves of the shaft assembly gear 11g. The axial clearance of the adjustment device can be adjusted by adding shaft assembly shims 11e between the shaft assembly bushings 11d. A butterfly spring 11c is installed in sequence at one end of the bushing. The hinge seat 11a is threadedly connected to the sleeve 11j and close to the butterfly spring 11c.

[0032] In one possible embodiment, such as Figure 3 As shown, the bracket assembly 5 includes a first locking washer 5a, a bracket assembly nut 5b, a worm gear 5c, a first gear 5d, a bracket assembly small shaft 5e, a double gear 5f, a second gear 5g, a bracket assembly bolt 5h, a guide 5i, a bracket assembly bushing 5j, and a bracket assembly bracket 5k. The bracket assembly small shaft 5e passes through the first gear 5d and the worm gear 5c and is mounted on the bracket 5k. Its axial end is fixed in sequence by the first locking washer 5a and the bracket assembly nut 5b. The bracket assembly bushing 5j is fixed to the bracket assembly bracket 5k by screws. The guide 5i... The guide 5i passes through the bushing 5j of the support assembly and is rotatably connected to it via a bearing; one side of the guide 5i is connected to the three-stage planetary reducer 4 via gear meshing, and the other side is connected to one of the gears in the double gear 5f, referred to as the first double gear. The first double gear meshes with the second gear 5g; the other gear in the double gear 5f is referred to as the second double gear. The second double gear meshes with the first gear 5d. The double gear 5f and the second gear 5g are fixed to the support bracket 5k of the support assembly by bolts.

[0033] In one possible embodiment, such as Figure 4 As shown, the stroke control device 7 includes a second bracket 7a, an extension limit switch 7b, a first washer 7c, a retraction limit switch 7d, a neutral position switch 7e, a first nut 7f, a first bolt 7h, a worm gear 7i, a second nut 7j, a first small shaft 7k, a second locking washer 7l, a neutral cam 7m, a second washer 7n, a limit cam 7o, a first spring plate 7p, a second spring plate 7q, a second washer 7r, and a second small shaft 7s;

[0034] The first small shaft 7k passes sequentially through the worm gear 7i, the neutral cam 7m, the second washer 7n, and the limit cam 7o, and is fixed in the cavity of the second bracket 7a by the second nut 7j and the second locking washer 7l; the worm gear 7i is connected to the worm 5c through a transmission cooperation, and the rotation of the worm gear 7i drives the neutral cam 7m and the limit cam 7o to rotate; the first spring plate 7p is located directly above the neutral cam 7m, and the second spring plate 7q is located directly above the limit cam 7o; the first spring plate 7p, the second washer 7r, and the second spring plate 7q are sequentially fitted onto the second small shaft 7s and fixed in the cavity of the second bracket 7a by a nut; the neutral position switch 7e is located directly above the first spring plate 7p, and the extension limit switch 7b and the retraction limit switch 7d are located directly above the second spring plate 7q; two identical first bolts 7h pass sequentially through the extension limit switch 7b, the first washer 7c, the retraction limit switch 7d, and the neutral position switch 7e, and are fixed in the cavity of the second bracket 7a by the first nut 7f.

[0035] In one possible embodiment, the neutral cam 7m triggers the first spring plate 7p to press the neutral position switch 7e, emitting a neutral position signal, and the neutral bright area is set by the stroke of the neutral cam 7m triggering the first spring plate 7p.

[0036] In one possible embodiment, the limit cam 7o includes a retraction limit cam and an extension limit cam; the retraction limit cam and the extension limit cam respectively trigger the second spring plate 7q to press the retraction limit switch 7d and the extension limit switch 7b, and issue a retraction limit position or extension limit signal, and the brake clutch 1 provides braking torque according to the retraction limit position or extension limit signal.

[0037] In one possible embodiment, such as Figure 6 As shown, the protruding part of the neutral cam 7m is a 60° triangle.

[0038] In one possible embodiment, the first spring plate 7p is provided with a protrusion that cooperates with the neutral cam 7m, and the protrusion is also triangular in shape at 60°.

[0039] Preferably, such as Figure 5 As shown, the second small shaft 7s is an eccentric shaft and is set as a stepped shaft. Its right end face is provided with a rectangular slot 7s1, the middle part is an eccentric part 7s2, and the two ends are concentric; the first spring plate 7p is set on the eccentric part 7s2.

[0040] Preferably, the first small shaft 7k is a flat shaft that is larger at one end and smaller at the other end.

[0041] In one possible embodiment, one end face of the limiting cam 7o and the neutral cam 7m is set to hexagonal to facilitate adjustment with special tools.

[0042] Preferably, it also includes a first washer 7g, which connects the first bolt 7h that fixes the switch to the second small shaft 7s, so that they can be tightened and fixed at the same time.

[0043] Preferably, one end of the control cable assembly 9 is a plug, and the other end is provided with an internal thread, which is threaded to the second housing 8 for easy disassembly.

[0044] Preferably, it also includes a cover plate 6, which is disposed above the first housing 3 and the second housing 8 and connected to the housing by screws; by opening the cover plate 6, the range of the bright area and the extreme position can be adjusted by using a wrench.

[0045] Operating Description: When the motor is working, motor 2 drives the output shaft to rotate, transmitting torque to the three-stage planetary reducer 4. This torque is then transmitted to the ball screw pair via gear 5g in the bracket assembly 5, converting the rotational motion into linear motion. Simultaneously, gear 5g in the bracket assembly 5 transmits motion to gear 5d via double gear 5f. At the same time, the worm gear 5c, coaxial with gear 5d, drives the worm wheel 7i on the stroke control device 7, changing the direction of motion and causing the limit cam 7o mounted on the small shaft 7k to rotate and press the second spring plate 7q. When the spring plate reaches the retracted or limit position... The spring plate press switch cuts off the power and sends out a limit position signal. Since the position where the first spring plate 7p is installed is the eccentric part of the small shaft 7s, the relative position of the small shaft 7s and the neutral cam 7m can be adjusted. When adjusting the neutral position, the neutral cam 7m presses the neutral position switch 7e on 7p and sends out a neutral position signal. The distance that the ball screw pair advances during the time that the fan-shaped part of the neutral cam 7m presses the neutral position switch 7e to climb is the neutral bright area, and it continues to emit light within the range of (0.5~1.5) mm. The range of the bright area can be adjusted directly by opening the cover plate 6 and using a wrench.

Claims

1. A regulating electric device, characterized in that, Includes a brake clutch (1), a motor (2), a first housing (3), a three-stage planetary reducer (4), a bracket assembly (5), a stroke control device (7), a second housing (8), an output shaft assembly (11), and a connector (10); The brake clutch (1) and the motor (2) are integrated. The motor (2) is mounted on the first housing (3) by screws. The gear shaft of the motor (2) meshes with the three-stage planetary reducer (4). The three-stage planetary reducer (4) is installed in the cavity of the first housing (3). The three-stage planetary reducer (4) meshes with the support assembly (5) by gears. The support assembly (5) and the stroke control device (7) are respectively mounted on the second housing (8) by screws. The support assembly (5) and the output shaft assembly (11) are connected by gear meshing. The output shaft assembly (11) passes through the first housing (3) and the second housing (8). The output stroke of the output shaft assembly (11) is controlled by the stroke control device (7). After reaching the target position, the brake clutch (1) provides braking torque. The connector (10) is connected to the output shaft assembly (11) by external thread for easy connector adjustment. The stroke control device (7) includes a second bracket (7a), an extension limit switch (7b), a first washer (7c), a retraction limit switch (7d), a neutral position switch (7e), a first nut (7f), a first bolt (7h), a worm gear (7i), a second nut (7j), a first small shaft (7k), a second locking washer (7l), a neutral cam (7m), a second washer (7n), a limit cam (7o), a first spring plate (7p), a second spring plate (7q), a second washer (7r), and a second small shaft (7s). The first small shaft (7k) passes sequentially through the worm gear (7i), the neutral cam (7m), the second washer (7n), and the limit cam (7o), and is fixed in the cavity of the second bracket (7a) by the second nut (7j) and the second locking washer (7l); the worm gear (7i) is connected to the worm (5c) through a transmission engagement, and the rotation of the worm gear (7i) drives the rotation of the neutral cam (7m) and the limit cam (7o); the first spring plate (7p) is located directly above the neutral cam (7m), and the second spring plate (7q) is located directly above the limit cam (7o); the first spring plate (7p) The second washer (7r) and the second spring plate (7q) are sequentially fitted onto the second small shaft (7s) and fixed in the cavity of the second bracket (7a) by nuts; the neutral position switch (7e) is located directly above the first spring plate (7p), and the extension limit switch (7b) and retraction limit switch (7d) are located directly above the second spring plate (7q); two identical first bolts (7h) pass sequentially through the extension limit switch (7b), the first washer (7c), the retraction limit switch (7d), and the neutral position switch (7e), and are fixed in the cavity of the second bracket (7a) by first nuts (7f); The neutral cam (7m) triggers the first spring plate (7p) to press the neutral position switch (7e), sending a neutral position signal. The neutral bright area is set by the stroke of the first spring plate (7p) triggered by the neutral cam (7m). The limit cam (7o) includes a retraction limit cam and an extension limit cam; the retraction limit cam and the extension limit cam respectively trigger the second spring plate (7q) to press the retraction limit switch (7d) and the extension limit switch (7b), and issue a retraction limit position or extension limit signal, and the brake clutch (1) provides braking torque according to the retraction limit position or extension limit signal; The protruding part of the neutral cam (7m) is a 60° triangle; The first spring plate (7p) is provided with a protruding part that cooperates with the neutral cam (7m), and the shape is also a 60° triangle.

2. The adjustable electric device according to claim 1, characterized in that, The output shaft assembly (11) includes a hinge joint seat (11a), a shaft assembly nut (11b), a disc spring (11c), a shaft assembly bushing (11d), a shaft assembly washer (11e), a shaft assembly steel ball (11f), a shaft assembly gear (11g), a ball screw (11h), a screw nut (11i), a sleeve (11j), a first retaining ring (11k), and a second retaining ring (11m). The screw nut (11i) is fitted onto the ball screw (11h) to form a roller screw pair. The roller screw pair is located inside the sleeve (11j). One end of the ball screw pair is supported by the first retaining ring (11k) and the second retaining ring (11m) installed at the end of the sleeve (11j). The opposite end of the ball screw (11h) is equipped with a shaft assembly gear (11g), which is connected to the sleeve (11h) by the screw nut (11h) and the bearing (11g). j) The bearing inside is composed of the shaft assembly bushing (11d) and the shaft assembly steel ball (11f); the shaft assembly gear (11g) is close to the stepped shaft of the lead screw pair through the left end face, and the right end face is axially limited by the shaft assembly nut (11b) close to the shaft assembly gear (11g). The outer surface of the toothless end of the shaft assembly gear (11g) is provided with a groove. The two shaft assembly bushings (11d) are symmetrically distributed on both sides of the groove. A ring of shaft assembly steel balls (11f) is installed between the grooves of the shaft assembly gear (11g). The axial clearance of the adjustment device can be adjusted by adding shaft assembly shims (11e) between the shaft assembly bushings (11d). A butterfly spring (11c) is installed in sequence at one end of the bushing. The hinge seat (11a) is threadedly connected to the sleeve (11j) and close to the butterfly spring (11c).

3. The adjustable electric device according to claim 2, characterized in that, The bracket assembly (5) includes a first locking washer (5a), a bracket assembly nut (5b), a worm gear (5c), a first gear (5d), a bracket assembly small shaft (5e), ​​a double gear (5f), a second gear (5g), a bracket assembly bolt (5h), a guide (5i), a bracket assembly bushing (5j), and a bracket assembly bracket (5k). The bracket assembly small shaft (5e) passes through the first gear (5d) and the worm gear (5c) and is mounted on the bracket (5k). Its axial end is fixed in sequence by the first locking washer (5a) and the bracket assembly nut (5b). The bracket assembly bushing (5j) is fixed to the bracket assembly bracket (5k) by screws. The actuator (5i) passes through the bushing (5j) of the support assembly and is rotatably connected to it via a bearing; one side of the actuator (5i) is connected to the three-stage planetary reducer (4) via gear meshing, and the other side is connected to one of the gears in the double gear (5f), referred to as the first double gear, which meshes with the second gear (5g); the other gear in the double gear (5f) is referred to as the second double gear, which meshes with the first gear (5d); the double gear (5f) and the second gear (5g) are fixed to the support bracket (5k) of the support assembly by bolts.

4. The adjustable electric device according to claim 1, characterized in that, The end face of one side of the limiting cam (7o) and the neutral cam (7m) is set as hexagonal, which facilitates adjustment with special tools.

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