An aviation seat with a lightweight and high-load side-slip adjustment mechanism

Abstract

The present invention provides an aviation pilot seat with a lightweight and high-load side-slip adjustment mechanism, the seat comprising a leg assembly and a guide rail assembly, a seat assembly mounted on the leg assembly, the seat assembly comprising a seat cushion and a side-slip adjustment mechanism arranged under the seat cushion. The left and right support plates of the seat are rationally split, optimized by simulation and verified by tests, which can not only provide a safe and reliable side-slip adjustment function for the aircraft pilot, but also maintain the force and strength requirements of the seat. The integrated design cleverly avoids the cantilever load condition before side-slipping, achieves the optimal force structure, and maximizes the lightweight and high-load design goal of the seat, without affecting the verification of various load tests of the seat. Even during a crash impact, the seat can still firmly restrain the pilot; in order to prevent the pilot from operating incorrectly, a front-back adjustment limiting mechanism is added after the side-slip adjustment to prevent the front-back adjustment from hitting the cabin side wall after the side-slip adjustment.

Description

Technical Field

[0001] The present invention relates to the technical field of aviation seats, and in particular to an aviation pilot seat with a lightweight and high-load-bearing side-slip adjustment mechanism. Background Art

[0002] The current field of lightweight, high-load-bearing aircraft pilot seats lacks a seat and backrest with adjustable side sliding. To achieve this, the side sliding mechanism is typically mounted on an L-shaped guide rail, allowing the entire seat to slide along the L-shaped guide rail. This design has significant limitations, primarily due to the inability to install an L-shaped guide rail in a narrow cockpit or when the side console is mounted on the bulkhead. Furthermore, no domestic or international aircraft pilot seats meet high-load requirements (static load capacity of 2,200 kg). Summary of the Invention

[0003] The object of the present invention is to provide an aviation seat with a lightweight and high-load-bearing side-slip adjustment mechanism, thereby solving the aforementioned problems existing in the prior art.

[0004] In order to achieve the above object, the technical solution adopted by the present invention is as follows:

[0005] An aviation seat with a lightweight and high-load side-sliding adjustment mechanism comprises a chair leg assembly and a guide rail assembly, and also comprises a seat assembly mounted on the chair leg assembly, the seat assembly comprising a seat cushion and a side-sliding adjustment mechanism arranged under the seat cushion, the side-sliding adjustment mechanism comprising a side-sliding main body mechanism and a side-sliding locking adjustment mechanism, the side-sliding main body mechanism comprising a double-layer tube that can slide relatively, the double-layer tube comprising an outer seat crossbeam and an inner liner tube, both ends of the liner tube being respectively provided with a side-sliding head and a bushing, the seat crossbeam and the liner tube at one end away from the side-sliding head being respectively connected to a connecting plate and a seat support plate by using a nylon bushing; the connecting plate is fixedly connected to the chair leg assembly, the side-sliding locking adjustment mechanism is mounted on the seat support plate, and the seat support plate is able to slide relatively along the double-layer tube through the side-sliding locking adjustment mechanism;

[0006] The side sliding locking adjustment mechanism includes a side sliding adjustment handle, a side sliding adjustment connecting rod, a side sliding adjustment wheel, a locking structure, a return spring, a connecting rod mechanism and a side sliding adjustment wire rope. The side sliding adjustment handle is connected to the side sliding adjustment wheel through the side sliding adjustment connecting rod. The side sliding adjustment wire rope connected to the side sliding adjustment wheel is connected to the locking structure through the connecting rod mechanism. The return spring is connected between the connecting rod mechanism and the seat support plate.

[0007] Preferably, the connecting rod mechanism includes a rotating plate and two connecting plates, the rotating plate is a trident type, including a horizontal end connected to the connecting plate and a vertical end connected to the return spring, and the side sliding adjustment wire rope is connected to the vertical end.

[0008] Preferably, the rotating plate and the connecting plate are connected by a rotating shaft, a rotating shaft is provided between the three forks of the rotating plate, and the seat support plate is provided with a rotating plate fixing structure, and the rotating plate fixing structure is connected to the rotating plate through the rotating shaft.

[0009] Preferably, the locking mechanism includes a locking pin and a locking hole provided on the double-layer tube, the locking pin is connected to both ends of the connecting piece, and the locking hole is provided at one end close to the connecting plate and adapted to the locking pin.

[0010] Preferably, the seat crossbeam includes a front seat crossbeam and a rear seat crossbeam arranged in parallel, one end of the front seat crossbeam and the rear seat crossbeam are fixedly connected to the connecting member by a fixing part and a small nylon bushing, and the seat support plate and the connecting member are connected by a large nylon bushing.

[0011] Preferably, a side sliding limiter is provided on the seat crossbeam for limiting the side sliding of the seat support plate.

[0012] Preferably, the side sliding limiter is two arc-shaped structures, which are fixed to the seat surface crossbeam by fixing pins.

[0013] Preferably, the aviation seat also includes the side sliding limit assembly, which includes a side sliding baffle, a side sliding sliding member and a side sliding baffle return spring. One end of the side sliding baffle is installed on the connecting plate, and a slide groove is provided in the middle of the side sliding baffle. The side sliding sliding member is located in the slide groove and is connected to the other end of the side sliding baffle through the side sliding baffle return spring.

[0014] Preferably, the side sliding limit assembly further includes a side sliding limit baffle limiter, which is arranged beside the side sliding baffle return spring and is used to limit the sliding distance of the side sliding member in the sliding groove.

[0015] Preferably, the aviation seat further comprises a front-and-rear adjustment limiter mounted on the side-sliding body, and a baffle structure is provided at the front end of the front-and-rear adjustment limiter.

[0016] The beneficial effects of the present invention are:

[0017] The present invention provides an aviation pilot seat with a lightweight and high-load-bearing side-slip adjustment mechanism. The seat innovatively integrates the side-slip adjustment device between the seat surface and the chair legs. The appearance of the seat is almost the same as that of a seat without a side-slip adjustment function. There is no need to set up a separate L-shaped slide rail installation space and installation interface on the aircraft, which greatly improves the layout of onboard equipment in the cockpit of relatively small aircraft. The left and right support plates of the seat surface are rationally split, simulated and optimized, and tested. This can not only provide the aircraft pilot with a safe and reliable side-slip adjustment function, but also maintain the force and strength requirements of the seat. The integrated design cleverly avoids the cantilever load condition before side-slipping, achieves the optimal force structure, and maximizes the lightweight and high-load-bearing design goals of the seat without affecting the verification of various load tests of the seat. Even in the process of crash and impact, the seat can still firmly restrain the pilot. In order to prevent the pilot from operating incorrectly, a front and rear adjustment limiting mechanism is added after the side-slip adjustment to prevent the front and rear adjustment from hitting the cabin side wall after the side-slip adjustment. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 Schematic diagram of the explosion of the side-sliding main mechanism of the aviation seat provided in Example 1 Figure 1 .

[0019] Figure 2 Schematic diagram of the explosion of the side sliding main mechanism of the aviation seat provided in Example 1 Figure 2 .

[0020] Figure 3 This is a schematic diagram of the aviation seat side sliding adjustment mechanism provided in Example 1.

[0021] Figure 4 This is a schematic diagram of the aviation seat side sliding baffle assembly provided in Example 1.

[0022] Figure 5 This is a schematic diagram of the front and rear adjustment operation of the aviation seat provided in Example 1 after sliding sideways.

[0023] Figure 6 This is a schematic diagram of the aviation seat provided in Example 1, in which the forward and backward adjustment handle of the aviation seat in the normal position is away from the restriction member.

[0024] Figure 7 Schematic diagram of an aviation pilot seat with a lightweight, high-load-bearing side-slip adjustment mechanism.

[0025] In the figure: 1-front crossbeam of the seat, 2-rear crossbeam of the seat, 3-front fixing part, 4-rear fixing part, 5-lining tube, 6-plastic side sliding head, 7-plastic bushing, 8-side sliding limiter, 9-large nylon bushings on the left and right sides, 10-small nylon bushings on the left and right sides, 11-left support plate of the seat, 12-right support plate of the seat, 13-left connecting plate, 14-right connecting plate, 15-side sliding adjustment wheel, 16-side sliding adjustment wire rope, 17-rotating plate, 18-side sliding adjustment return spring , 19-connecting plate, 20-side sliding locking pin, 21-side sliding adjustment connecting rod, 22-side sliding adjustment handle, 23-side sliding baffle, 24-side sliding sliding member, 25-side sliding baffle limiter, 26-side sliding baffle tension spring, 27-front pad, 28-front and rear adjustment handle, 29-front and rear adjustment limiter, 30-headrest, 31-backrest assembly (including cushion), 32-armrest assembly, 33-seat assembly (including cushion), 34-chair leg assembly, 35-guide rail assembly. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0027] Example 1

[0028] An aviation seat with a lightweight and high-load side-sliding adjustment mechanism comprises a chair leg assembly and a guide rail assembly, and also comprises a seat assembly mounted on the chair leg assembly, the seat assembly comprising a seat cushion and a side-sliding adjustment mechanism arranged under the seat cushion, the side-sliding adjustment mechanism comprising a side-sliding main body mechanism and a side-sliding locking adjustment mechanism, the side-sliding main body mechanism comprising a double-layer tube that can slide relatively, the double-layer tube comprising an outer seat crossbeam and an inner liner tube, both ends of the liner tube being respectively provided with a side-sliding head and a bushing, the seat crossbeam and the liner tube at one end away from the side-sliding head being respectively connected to a connecting plate and a seat support plate by using a nylon bushing; the connecting plate is fixedly connected to the chair leg assembly, the side-sliding locking adjustment mechanism is mounted on the seat support plate, and the seat support plate is able to slide relatively along the double-layer tube through the side-sliding locking adjustment mechanism;

[0029] The side sliding locking adjustment mechanism includes a side sliding adjustment handle, a side sliding adjustment connecting rod, a side sliding adjustment wheel, a locking structure, a return spring, a connecting rod mechanism and a side sliding adjustment wire rope. The side sliding adjustment handle is connected to the side sliding adjustment wheel through the side sliding adjustment connecting rod. The side sliding adjustment wire rope connected to the side sliding adjustment wheel is connected to the locking structure through the connecting rod mechanism. The return spring is connected between the connecting rod mechanism and the seat support plate.

[0030] The linkage mechanism in this embodiment includes a rotating plate and two connecting plates. The rotating plate is three-pronged, with a horizontal end connected to the connecting plate and a vertical end connected to the return spring. The side slip adjustment wire rope is connected to the vertical end. The rotating plate and the connecting plate are connected by a rotating shaft, and a rotating shaft is provided between the three prongs of the rotating plate. The seat support plate is provided with a rotating plate fixing structure, which is connected to the rotating plate via the rotating shaft.

[0031] The side sliding adjustment connecting rod and the side sliding adjustment wheel connected to the side sliding adjustment handle drive the side sliding adjustment wire rope, overcome the force of the side sliding adjustment tension spring, drive the rotating plate and the connecting plate, and then pull out the side sliding locking pin to achieve side sliding unlocking of the seat.

[0032] The locking mechanism in this embodiment includes a locking pin and a locking hole provided on the double-layer tube. The locking pin is connected to both ends of the connecting piece. The locking hole is provided at one end close to the connecting plate and is adapted to the locking pin.

[0033] The seat crossbeams in this embodiment include a front seat crossbeam and a rear seat crossbeam arranged in parallel. One end of each of the front and rear seat crossbeams is fixedly connected to the connector using a fixing member and a small nylon bushing. The seat support plate is connected to the connector using a large nylon bushing. Side slip limiters are provided on the seat crossbeams to prevent the seat support plate from sliding sideways. These limiters are two arc-shaped structures secured to the seat crossbeams by fixing pins.

[0034] The structure provided in the present invention releases stress damage to the seat surface caused by the left and right legs pitching and rolling at an angle of 10°, yawing at an angle of 10°, and impacting 1760kg by deforming the large and small nylon bushings on the left and right sides when the driver's seat is subjected to the conditions of the left and right legs pitching and rolling at an angle of 10°, yawing at an angle of 10°, and impacting 1760kg. The structure carries the loads of yaw of 10°, impact of 1760kg, and static load of 2200kg by the front and rear cross beams (aluminum material) in front of the seat and the internal liner tube (aluminum material), effectively avoiding the problem of cantilever stress and the increase in weight caused by the use of steel for the sliding mechanism due to the cantilever stress.

[0035] The aircraft seat in this embodiment also includes a side-slip limiter assembly, which includes a side-slip baffle, a side-slip slider, and a side-slip baffle return spring. One end of the side-slip baffle is mounted on the connecting plate, and a slot is provided in the middle of the side-slip baffle. The side-slip slider is located within the slot and connected to the other end of the side-slip baffle via the side-slip baffle return spring. The side-slip limiter assembly also includes a side-slip limiter, which is provided adjacent to the side-slip baffle return spring and is used to limit the sliding distance of the side-slip slider within the slot.

[0036] The side sliding limit assembly in this embodiment realizes the locking of the side sliding mechanism. When the seat slides sideways, the side sliding baffle, the side sliding sliding part, the side sliding baffle limit part, and the side sliding baffle return spring are used to block the space after sliding sideways, so as to prevent people from inserting their fingers or other parts of the body into the gap after sliding sideways during operation.

[0037] The aviation seat in this embodiment further includes a front-rear adjustment limiter mounted on the side-sliding body, and a baffle structure is provided at the front end of the front-rear adjustment limiter.

[0038] By adopting the above technical solution disclosed in the present invention, the following beneficial effects are obtained:

[0039] The present invention provides an aviation pilot seat with a lightweight and high-load-bearing side-slip adjustment mechanism. The seat innovatively integrates the side-slip adjustment device between the seat surface and the chair legs. The appearance of the seat is almost the same as that of a seat without a side-slip adjustment function. There is no need to set up a separate L-shaped slide rail installation space and installation interface on the aircraft, which greatly improves the layout of onboard equipment in the cockpit of relatively small aircraft. The left and right support plates of the seat surface are rationally split, simulated and optimized, and tested. This can not only provide the aircraft pilot with a safe and reliable side-slip adjustment function, but also maintain the force and strength requirements of the seat. The integrated design cleverly avoids the cantilever load condition before side-slipping, achieves the optimal force structure, and maximizes the lightweight and high-load-bearing design goals of the seat without affecting the verification of various load tests of the seat. Even in the process of crash and impact, the seat can still firmly restrain the pilot. In order to prevent the pilot from operating incorrectly, a front and rear adjustment limiting mechanism is added after the side-slip adjustment to prevent the front and rear adjustment from hitting the cabin side wall after the side-slip adjustment.

[0040] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. An aviation seat with a lightweight and high-load side sliding adjustment mechanism, comprising a chair leg assembly and a guide rail assembly, characterized in that: The chair is equipped with a seat assembly mounted on the chair leg assembly, the seat assembly comprising a seat cushion and a side-sliding adjustment mechanism arranged under the seat cushion, the side-sliding adjustment mechanism comprising a side-sliding main body mechanism and a side-sliding locking adjustment mechanism, the side-sliding main body mechanism comprising a double-layer tube that can slide relatively, the double-layer tube comprising an outer seat crossbeam and an inner liner tube, both ends of the liner tube are respectively provided with a side-sliding head and a bushing, the seat crossbeam and the end of the liner tube away from the side-sliding head are respectively connected to a connecting plate and a seat support plate by a nylon bushing; the connecting plate is fixedly connected to the chair leg assembly, the side-sliding locking adjustment mechanism is mounted on the seat support plate, and the seat support plate is able to slide relatively along the double-layer tube through the side-sliding locking adjustment mechanism; The side sliding locking adjustment mechanism includes a side sliding adjustment handle, a side sliding adjustment connecting rod, a side sliding adjustment wheel, a locking structure, a return spring, a connecting rod mechanism and a side sliding adjustment wire rope, wherein the side sliding adjustment handle is connected to the side sliding adjustment wheel through the side sliding adjustment connecting rod, the side sliding adjustment wire rope connected to the side sliding adjustment wheel is connected to the locking structure through the connecting rod mechanism, and the return spring is connected between the connecting rod mechanism and the seat support plate; The connecting rod mechanism includes a rotating plate and two connecting plates. The rotating plate is a three-pronged type, including a horizontal end connected to the connecting plate and a vertical end connected to the return spring. The side sliding adjustment wire rope is connected to the vertical end.

2. The aviation seat with a lightweight and high-load side-slip adjustment mechanism according to claim 1, characterized in that: The rotating piece and the connecting piece are connected by a rotating shaft. A rotating shaft is provided between the three forks of the rotating piece. The seat support plate is provided with a rotating piece fixing structure. The rotating piece fixing structure is connected to the rotating piece through the rotating shaft.

3. The aviation seat with a lightweight and high-load side-slip adjustment mechanism according to claim 2, characterized in that: The locking structure includes a locking pin and a locking hole arranged on the double-layer tube. The locking pin is connected to both ends of the connecting piece. The locking hole is arranged at one end close to the connecting plate and is adapted to the locking pin.

4. The aviation seat with a lightweight and high-load side-slip adjustment mechanism according to claim 3, characterized in that: The seat crossbeam includes a front seat crossbeam and a rear seat crossbeam arranged in parallel. One end of the front seat crossbeam and the rear seat crossbeam are fixedly connected to the connecting piece by a fixing piece and a small nylon bushing, and the seat support plate and the connecting piece are connected by a large nylon bushing.

5. The aviation seat with a lightweight and high-load side-slip adjustment mechanism according to claim 4, characterized in that: The seat crossbeam is provided with a side sliding limiter for limiting the side sliding of the seat support plate.

6. The aviation seat with a lightweight and high-load side-slip adjustment mechanism according to claim 5, characterized in that: The side sliding limiter is two arc-shaped structures, which are fixed on the seat surface crossbeam through fixing pins.

7. The aviation seat with a lightweight and high-load side-slip adjustment mechanism according to claim 5, characterized in that: The aviation seat also includes a side sliding limiter, which includes a side sliding baffle, a side sliding slide and a side sliding baffle return spring. One end of the side sliding baffle is installed on the connecting plate, and a slide groove is provided in the middle of the side sliding baffle. The side sliding slide is located in the slide groove and is connected to the other end of the side sliding baffle through the side sliding baffle return spring.

8. The aviation seat with a lightweight and high-load side-slip adjustment mechanism according to claim 7, characterized in that: The side sliding limiter also includes a side sliding limit baffle limiter, which is arranged beside the side sliding baffle return spring and is used to limit the sliding distance of the side sliding member in the sliding groove.

9. The aviation seat with a lightweight and high-load side-slip adjustment mechanism according to claim 2, characterized in that: The aviation seat further comprises a front-and-rear adjustment limiter mounted on the side-sliding body, and a baffle structure is provided at the front end of the front-and-rear adjustment limiter.

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