A suspended pedal position adjustment structure and method

Abstract

This invention discloses a suspended pedal position adjustment structure and method, including a bracket, support arms, pedal pivot, pedal pedals, a pull rod assembly, a V-shaped frame, and a main shaft. The pedal pivot is fixed to the top front end of the bracket, and two support arms are rotatably connected to the pedal pivot. Each support arm has a pedal hinged to its free end. The main shaft is rotatably connected to the bracket, and a connecting tube is fixedly connected to the rear side of the main shaft. The main shaft and the connecting tube have interconnected through holes along the axis of the connecting tube. A drive shaft is rotatably connected inside the connecting tube, and a handle is connected to the front end of the drive shaft. An axial elongated hole is provided on the lower side of the connecting tube, and a drive nut is threaded onto the drive shaft, extending out of the elongated hole. The V-shaped frame slides onto the connecting tube and is fixedly connected to the drive nut. Both sides of the V-shaped frame are hinged to the two support arms via pull rod assemblies, forming a linkage mechanism. The adjustment process is smooth and convenient, and the left and right pedal adjustments remain consistent, resulting in high reliability.

Description

Technical Field

[0001] This invention belongs to the field of aircraft pedals and relates to a suspended pedal position adjustment structure and method. Background Technology

[0002] The accelerator pedal position adjustment device is an important component of the aircraft accelerator pedal assembly. It not only provides the pilot with yaw control and outputs braking command signals, but also has a fore-and-aft position adjustment function to accommodate the comfort needs of pilots of different heights.

[0003] Most existing aircraft use horizontal pedal control devices, which are large in size and require a large installation space. When adjusting the forward and backward positions, problems such as jamming, asynchronous left and right pedal positions after adjustment, and large adjustment differences can easily occur. This results in low reliability and safety, making it difficult to use in all types of aircraft. Summary of the Invention

[0004] The purpose of this invention is to overcome the shortcomings of the prior art and provide a suspended pedal position adjustment structure and method that is smooth and convenient in the adjustment process, and the left and right pedals are always adjusted in a consistent manner, with high reliability.

[0005] To achieve the above objectives, the present invention employs the following technical solution: A suspended pedal position adjustment structure includes a bracket, a support arm, a pedal pivot, a pedal pedal, a pull rod assembly, a V-shaped frame, and a main shaft; A foot pedal pivot is fixed at the top front end of the bracket. Two support arms are rotatably connected to the foot pedal pivot, and a foot pedal is hinged to the free end of each support arm. The bracket is rotatably connected to a main shaft, and a connecting tube is fixedly connected to the rear side of the main shaft. The main shaft and the connecting tube are provided with interconnecting through holes, which are set along the axis of the connecting tube. A drive shaft is rotatably connected inside the connecting tube, and a handle is connected to the front end of the drive shaft. An axial elongated hole is provided on the lower side of the connecting tube, and a drive nut is threadedly connected to the drive shaft, with the drive nut extending out of the elongated hole. The V-shaped frame sliding sleeve is fixedly connected to the transmission nut on the connecting pipe. The two sides of the V-shaped frame are respectively hinged to the two support arms through the tie rod assembly to form a linkage mechanism.

[0006] Preferably, a connecting arm extends from the rear end of the foot pedal, the connecting arm is hinged to the movable end of the brake command sensor, one end of the brake rocker arm is hinged to the fixed end of the brake command sensor, and the other end of the brake rocker arm is fixedly connected to the foot pedal shaft.

[0007] Furthermore, the braking command sensor uses an LVDT sensor.

[0008] Preferably, a large bushing and a small bushing are fixedly installed on the foot pedal pivot, and the large bushing and the small bushing are respectively installed on both sides of the support arm.

[0009] Preferably, the front end of the connecting pipe is provided with a vertical sleeve, the inner wall of the sleeve is provided with internal teeth, the main shaft is provided with external teeth, the sleeve is sleeved on the main shaft, and the internal teeth and external teeth mesh.

[0010] Preferably, a wear-resistant sleeve is provided between the V-shaped frame and the connecting pipe.

[0011] Preferably, a connecting rod is provided between the drive shaft and the handle, and the drive shaft, connecting rod and handle are all connected by universal joints. The handle extends from the two foot pedals and is tilted upward.

[0012] Furthermore, a first inner universal joint is provided at the front end of the drive shaft, and a second inner universal joint is provided at the rear end of the connecting rod. A first support block is connected between the first and second inner universal joints. The first and second inner universal joints are respectively hinged to the first support block, and the hinge direction is perpendicular to the first support block. A first outer universal joint is provided at the front end of the connecting rod, and a second outer universal joint is provided at the rear end of the handle. A second support block is connected between the first and second outer universal joints. The first and second outer universal joints are respectively hinged to the second support block, and the included angle of the hinge direction is an obtuse angle.

[0013] A method for adjusting the position of a suspended pedal involves rotating a handle to drive a transmission shaft to rotate synchronously. When the transmission shaft rotates, the transmission nut moves back and forth along the connecting pipe axis due to the limitation of the elongated hole, thereby driving the V-shaped frame to move back and forth along the connecting pipe axis. The displacement is then transmitted to the two support arms through the pull rod assembly. The two support arms rotate around the pedal pivot, causing the pedal to rotate around the pedal pivot, thereby achieving position adjustment.

[0014] Preferably, when a single foot pedal is pressed to rotate the corresponding support arm, the two sides of the V-shaped frame move back and forth with the two support arms, rotate around the main shaft, and drive the main shaft to rotate synchronously through the connecting pipe and sleeve.

[0015] Compared with the prior art, the present invention has the following beneficial effects: This invention uses a drive shaft to rotate, which drives the V-shaped frame to move back and forth along the connecting pipe axis. The displacement is then transmitted to the two support arms via a tie rod assembly. The two support arms rotate around the foot pedal shaft, causing the foot pedal to rotate around the foot pedal shaft, thereby achieving position adjustment to meet the comfort height of drivers of different heights. The adjustment process is smooth and convenient, and the adjustment of the left and right foot pedals is always consistent, ensuring high reliability.

[0016] Furthermore, when both pedals are pressed simultaneously at the foot position, the pedals will rotate around the hinge of the support arm. This causes the connecting arm to displace the movable end of the brake command sensor relative to the fixed end, thus receiving the deceleration command. Also, when adjusting the pedal height, since the brake rocker arm, brake command sensor, connecting arm, and support arm can be considered as a four-bar linkage, the brake command sensor, support arm, and connecting arm are all in a rotatable state during the pedal rotation adjustment process. The pedal will not compress or extend the brake command sensor through the connecting arm.

[0017] Furthermore, the large and small bushings limit and support the support arm to prevent it from sliding to both sides along the pedal pivot axis. Attached Figure Description

[0018] Figure 1 This is a first schematic diagram of the suspended pedal position adjustment structure of the present invention; Figure 2 This is a second schematic diagram of the suspended pedal position adjustment structure of the present invention; Figure 3 This is a cross-sectional view of the suspended pedal position adjustment structure of the present invention.

[0019] The components are: 1-handle, 2-brake rocker arm, 3-support arm, 4-pedal pivot, 5-pedal pedal, 6-pull rod assembly, 7-brake command sensor, 8-V-frame, 9-main shaft, 10-sleeve, 11-connecting pipe, 12-drive shaft, 13-wear-resistant sleeve, 14-drive nut, 15-first inner universal joint connector, 16-second inner universal joint connector, 17-first support block, 18-connecting rod, 19-first outer universal joint connector, 20-second support block, 21-second outer universal joint connector. Detailed Implementation

[0020] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0021] It should be noted that the terms “front,” “back,” “left,” “right,” “up,” and “down” used in the following description refer to the directions shown in the attached diagrams, while the terms “inner” and “outer” refer to the directions toward or away from the geometric center of a specific component, respectively.

[0022] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0023] like Figure 1 and Figure 2 As shown, the suspended pedal position adjustment structure of the present invention includes a bracket, a handle 1, a brake rocker arm 2, a support arm 3, a pedal pivot 4, a pedal 5, a pull rod assembly 6, a brake command sensor 7, a V-shaped frame 8, and a main shaft 9.

[0024] The bracket is installed on the aircraft by bolt fasteners. A foot pedal shaft 4 is set at the top front end of the bracket. Both ends of the foot pedal shaft 4 are fixed to the bracket. The foot pedal shaft 4 is installed on the bracket by bolt fasteners. Two support arms 3 are installed on the foot pedal shaft 4 by bearings and rotate around the foot pedal shaft 4.

[0025] Each support arm 3 has a foot pedal 5 mounted on its free end via a bearing, located at the bottom side of the foot pedal 5; a connecting arm extends from the rear end of the foot pedal 5, and the connecting arm is hinged to the movable end of the brake command sensor 7. One end of the brake rocker arm 2 is hinged to the fixed end of the brake command sensor 7, and the other end of the brake rocker arm 2 is fixedly connected to the foot pedal shaft 4. The foot pedal 5 can rotate around the support arm 3, thereby driving the movable end of the brake command sensor 7 to move. The brake command sensor 7 is an LVDT sensor.

[0026] A large bushing and a small bushing are fixedly installed on the pedal pivot 4. The large bushing and the small bushing are respectively installed on both sides of the support arm 3 to limit and support the support arm 3 and prevent the support arm 3 from sliding to both sides along the pedal pivot 4.

[0027] The main shaft 9 is rotatably connected to the center of the bracket. The connecting tube 11 is located at the rear end of the main shaft 9 and is fixedly connected to the main shaft 9. The specific connection method is as follows: a vertical sleeve 10 is provided at the front end of the connecting tube 11. The inner wall of the sleeve 10 is provided with internal teeth, and the main shaft 9 is provided with external teeth. The sleeve 10 is fitted on the main shaft 9, and the internal teeth and external teeth mesh.

[0028] The sleeve 10, main shaft 9, and connecting pipe 11 are provided with interconnected through holes, which are arranged along the axis of the connecting pipe 11. A drive shaft 12 is provided inside the connecting pipe 11. Both ends of the drive shaft 12 are connected to both ends of the connecting pipe 11 by bearings. The drive shaft 12 is provided with external threads. An axial elongated hole is provided on the lower side of the connecting pipe 11. A drive nut 14 is threadedly connected to the drive shaft 12. The drive nut 14 extends out of the elongated hole. A V-shaped bracket 8 is fitted on the connecting pipe 11 and is slidably connected to the connecting pipe 11. The V-shaped bracket 8 is fixedly connected to the drive nut 14. When the drive shaft 12 rotates, the drive nut 14 is limited by the elongated hole and can only move back and forth along the axis of the connecting pipe 11, thereby driving the V-shaped bracket 8 to move back and forth along the axis of the connecting pipe 11.

[0029] A wear-resistant sleeve 13 is provided between the V-shaped frame 8 and the connecting pipe 11.

[0030] The front end of the drive shaft 12 is hinged to the rear end of the connecting rod 18. The specific connection method is as follows: the front end of the drive shaft 12 is provided with a first inner universal joint 15, and the rear end of the connecting rod 18 is provided with a second inner universal joint 16. A first support block 17 is connected between the first inner universal joint 15 and the second inner universal joint 16. The first inner universal joint 15 and the second inner universal joint 16 are respectively hinged to the first support block 17, and the hinge direction is perpendicular.

[0031] The front end of the connecting rod 18 is hinged to the rear end of the handle 1. The front end of the connecting rod 18 is provided with a first external universal joint connector 19, and the rear end of the handle 1 is provided with a second external universal joint connector 21. A second support block 20 is connected between the first external universal joint connector 19 and the second external universal joint connector 21. The first external universal joint connector 19 and the second external universal joint connector 21 are respectively hinged to the second support block 20, and the hinge direction is not perpendicular, with the included angle being an obtuse angle.

[0032] Link 18 is located between pedal 5 and main shaft 9, and is set horizontally. Handle 1 extends from the two pedals 5 and is tilted upward.

[0033] The V-frame 8 is hinged to two support arms 3 on both sides by a tie rod assembly 6, forming a linkage mechanism. The tie rod assembly 6 is hinged to the V-frame 8 and the support arms 3 by a universal joint. When the pilot presses down on a single foot pedal 5 to drive the corresponding support arm 3 to rotate, the two sides of the V-frame 8 move back and forth with the two support arms 3, rotate around the main shaft 9, and drive the main shaft 9 to rotate synchronously through the connecting pipe 11 and the sleeve 10.

[0034] The pilot can achieve two modes by operating the foot pedals 5 differently. When the pilot presses a single foot pedal 5 to rotate the support arm 3, the V-shaped frame 8 drives the main shaft 9 to rotate, and the aircraft yaws. When the pilot presses two foot pedals 5 at the same time, the foot pedals 5 will rotate around the hinge part of the support arm 3. This will cause the connecting arm to cause the movable end of the brake command sensor 7 to shift relative to the fixed end, and the aircraft will decelerate.

[0035] When the position of the foot pedal 5 needs to be adjusted, rotate the handle 1. Through two sets of universal joints, the handle 1 drives the connecting rod 18 and the drive shaft 12 to rotate synchronously. When the drive shaft 12 rotates, the transmission nut 14 can only move back and forth along the axis of the connecting pipe 11 due to the limitation of the elongated hole. This drives the V-shaped frame 8 to move back and forth along the axis of the connecting pipe 11. Then, the displacement is transmitted to the two support arms 3 through the pull rod assembly 6. The two support arms 3 rotate around the foot pedal shaft 4, causing the foot pedal 5 to rotate around the foot pedal shaft 4, thereby realizing the position adjustment to meet the comfort height of drivers of different heights.

[0036] Furthermore, when adjusting the height of the foot pedal 5, since the brake rocker arm 2, brake command sensor 7, connecting arm, and support arm 3 can be considered as a four-bar linkage, the brake command sensor 7, support arm 3, and connecting arm are all rotatable during the rotation adjustment of the foot pedal 5. The foot pedal 5 will not compress or extend the brake command sensor 7 through the connecting arm. However, when the pilot simultaneously presses both foot pedals 5 to brake, since the V-frame 8 cannot rotate or move back and forth, the connecting arm causes the movable end of the brake command sensor 7 to shift relative to the fixed end, thus transmitting the brake signal.

[0037] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0038] It should be understood that the above description is for illustrative purposes and not for limitation. Many embodiments and applications beyond the provided examples will be apparent to those skilled in the art upon reading the above description. Therefore, the scope of this teaching should not be determined by reference to the above description, but rather by reference to the foregoing claims and the full scope of their equivalents. For purposes of completeness, all articles and references, including patent applications and publications, are incorporated herein by reference. The omission of any aspect of the subject matter disclosed herein in the foregoing claims is not intended as a waiver of that subject matter, nor should it be construed as an indication that the applicant has not considered that subject matter as part of the disclosed inventive subject matter.

Claims

1. A method for adjusting the position of a suspended pedal with a suspended pedal position adjustment structure, characterized in that, The suspended pedal position adjustment structure includes a bracket, a support arm (3), a pedal pivot (4), a pedal pedal (5), a pull rod assembly (6), a V-shaped frame (8), and a main shaft (9). A foot pedal pivot (4) is fixed at the top front end of the bracket. Two support arms (3) are rotatably connected to the foot pedal pivot (4). Each support arm (3) has a foot pedal (5) hinged to its free end. The bracket is rotatably connected to a main shaft (9), and a connecting pipe (11) is fixedly connected to the rear side of the main shaft (9). The main shaft (9) and the connecting pipe (11) are provided with interconnected through holes, which are set along the axis of the connecting pipe (11). A drive shaft (12) is rotatably connected inside the connecting pipe (11), and a handle (1) is connected to the front end of the drive shaft (12). An axial elongated hole is provided on the lower side of the connecting pipe (11), and a drive nut (14) is threadedly connected to the drive shaft (12), with the drive nut (14) extending out of the elongated hole. The V-shaped frame (8) is slidably sleeved on the connecting pipe (11) and fixedly connected to the transmission nut (14). The two sides of the V-shaped frame (8) are respectively hinged to the two support arms (3) through the tie rod assembly (6) to form a linkage mechanism. A connecting arm extends from the rear end of the foot pedal (5). The connecting arm is hinged to the movable end of the brake command sensor (7). One end of the brake rocker arm (2) is hinged to the fixed end of the brake command sensor (7). The other end of the brake rocker arm (2) is fixedly connected to the foot pedal shaft (4). A vertical sleeve (10) is provided at the front end of the connecting pipe (11). The inner wall of the sleeve (10) is provided with internal teeth, and the main shaft (9) is provided with external teeth. The sleeve (10) is fitted on the main shaft (9), and the internal teeth and external teeth mesh. The method for adjusting the position of the suspended pedal includes: rotating the handle (1) to drive the transmission shaft (12) to rotate synchronously. When the transmission shaft (12) rotates, the transmission nut (14) moves back and forth along the axis of the connecting pipe (11) due to the limitation of the elongated hole, thereby driving the V-shaped frame (8) to move back and forth along the axis of the connecting pipe (11), and then transmitting the displacement to the two support arms (3) through the pull rod assembly (6). The two support arms (3) rotate around the pedal pivot (4), causing the pedal (5) to rotate around the pedal pivot (4), thereby realizing the position adjustment.

2. The method for adjusting the position of the suspended pedal according to claim 1, characterized in that, The brake command sensor (7) uses an LVDT sensor.

3. The method for adjusting the position of the suspended pedal according to claim 1, characterized in that, A large bushing and a small bushing are fixedly installed on the foot pedal pivot (4), and the large bushing and the small bushing are respectively installed on both sides of the support arm (3).

4. The method for adjusting the position of the suspended pedal according to claim 1, characterized in that, A wear-resistant sleeve (13) is provided between the V-shaped frame (8) and the connecting pipe (11).

5. The method for adjusting the position of the suspended pedal according to claim 1, characterized in that, A connecting rod (18) is provided between the drive shaft (12) and the handle (1). The drive shaft (12), the connecting rod (18) and the handle (1) are all connected by a universal joint. The handle (1) extends from the two foot pedals (5) and tilts upward.

6. The method for adjusting the position of the suspended pedal according to claim 5, characterized in that, The front end of the drive shaft (12) is provided with a first inner universal joint (15), and the rear end of the connecting rod (18) is provided with a second inner universal joint (16). A first support block (17) is connected between the first inner universal joint (15) and the second inner universal joint (16). The first inner universal joint (15) and the second inner universal joint (16) are respectively hinged to the first support block (17), and the hinge direction is perpendicular. The front end of the connecting rod (18) is provided with a first outer universal joint (19), and the rear end of the handle (1) is provided with a second outer universal joint (21). A second support block (20) is connected between the first outer universal joint (19) and the second outer universal joint (21). The first outer universal joint (19) and the second outer universal joint (21) are respectively hinged to the second support block (20), and the included angle of the hinge direction is an obtuse angle.

7. The method for adjusting the position of the suspended pedal according to claim 1, characterized in that, When a single foot pedal (5) is pressed down, the corresponding support arm (3) rotates. The V-shaped frame (8) moves back and forth on both sides of the two support arms (3), rotates around the main shaft (9), and drives the main shaft (9) to rotate synchronously through the connecting pipe (11) and the sleeve (10).

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