Mechanic's seat

Abstract

The application discloses a mechanic seat, which comprises a seat surface, a lifting adjusting mechanism, a rotating adjusting mechanism, a chair leg locking structure, a chair back angle adjusting mechanism, a rotating armrest assembly and a seat headrest assembly; a rotating disc is mounted at the bottom of the seat, the top end of the disc is connected with the bottom of the seat surface; the lifting adjusting mechanism is arranged at the end of the rotating disc far from the seat surface, the top end of the lifting adjusting mechanism is connected with the end of the rotating disc far from the seat surface; the rotating adjusting mechanism is arranged at the bottom of the lifting adjusting mechanism; the chair leg locking structure is arranged at the bottom of the rotating adjusting mechanism; the chair back angle adjusting mechanism is arranged at one side of the seat surface and used for adjusting the angle of the chair back of the seat surface; the rotating armrest assembly is connected with the side of the seat surface; and the seat headrest assembly is arranged at the top of the chair back of the seat surface and can be lifted and / or rotated on the top of the chair back. The seat is beautiful in appearance, complete in function, convenient to operate and light in weight, and can meet the development requirements of matched machine types.

Description

Technical Field

[0001] This invention relates to the field of aircraft mechanic seat technology, and more particularly to a mechanic seat. Background Technology

[0002] Mechanic seats are typically installed on aircraft for flight mechanics, providing a restraint system to secure the occupant without hindering their ability to perform mission tasks. The configuration of the mechanic seat varies depending on the aircraft type. Mechanic seats installed in helicopters generally have fewer adjustment functions and a simpler structure. The main structure is constructed from tubular parts and a few machined components, with an integrated seat pan, energy-absorbing structure, and seat cushion. These types of mechanic seats generally have crashworthiness features. Mechanic seats installed on fixed-wing aircraft have a more complex structure, primarily machined from metal, with more adjustment functions, resulting in more movement mechanisms and greater weight. These seats do not have crashworthiness features.

[0003] Therefore, designing a comfortable, aesthetically pleasing, and fully functional mechanic's chair has become a problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0004] The purpose of this invention is to provide a mechanic's chair, thereby solving the aforementioned problems existing in the prior art.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0006] A mechanic's chair includes a seat surface and a turntable mounted on the bottom, with the top of the turntable connected to the bottom of the seat surface;

[0007] The height adjustment mechanism is located at the end of the turntable away from the seat surface. The top of the height adjustment mechanism is connected to the end of the turntable away from the seat surface, and is used to adjust the height of the seat surface.

[0008] A rotary adjustment mechanism is located at the bottom of the lifting adjustment mechanism, and the top of the rotary adjustment mechanism is connected to the bottom of the lifting adjustment mechanism;

[0009] The chair leg lock structure is located at the bottom of the rotating adjustment mechanism, with one side connected to the bottom of the rotating adjustment mechanism and the other side away from the rotating adjustment mechanism mounted on the slide rail;

[0010] The backrest angle adjustment mechanism is located on one side of the seat surface and is used to adjust the angle of the seat back.

[0011] There are two rotating armrest assemblies, one on each side of the seat surface and the other connected to the side of the seat surface.

[0012] The headrest assembly is located at the top of the seat back on the seat surface. The headrest assembly can be raised and lowered and / or rotated at the top of the seat back.

[0013] In some specific embodiments, the lifting adjustment mechanism includes:

[0014] The support frame is square in shape, with its top end fixedly connected to the bottom end of the turntable and its bottom end fixedly connected to the top of the rotation adjustment mechanism;

[0015] The support frame includes: a left chair leg, a right chair leg, a first lower link, a second lower link, a first upper link, and a second upper link;

[0016] The first upper link and the second upper link are located between the left chair leg and the right chair leg, and the two ends of the first upper link and the second upper link are fixedly connected to the top of the left chair leg and the right chair leg, respectively.

[0017] The first lifting block, the second lifting block, the third lifting block, and the fourth lifting block are all triangular in shape;

[0018] The first lifting block, the second lifting block, the third lifting block, and the fourth lifting block are disposed between the left chair leg and the right chair leg. The first lifting block is disposed at one end of the left chair leg and is rotatably connected to one end of the first upper connecting rod. The second lifting block is disposed at the end of the left chair leg away from the first lifting block and is rotatably connected to one end of the second upper connecting rod. The third lifting block is disposed at one end of the right chair leg and is rotatably connected to the end of the first upper connecting rod away from the first lifting block. The fourth lifting block is disposed at the end of the right chair leg away from the third lifting block and is rotatably connected to the end of the second upper connecting rod away from the second lifting block.

[0019] In some specific embodiments, the lifting adjustment mechanism further includes:

[0020] First linkage and second linkage;

[0021] The first linkage is located between the first lifting block and the second lifting block, and its two ends are connected to the bottom of the first lifting block and the second lifting block;

[0022] The second linkage is located between the third and fourth lifting blocks, with both ends connected to the bottom of the third and fourth lifting blocks;

[0023] The first lower connecting rod is located between the first lifting block and the third lifting block, and its two ends are connected to the bottom of the first lifting block and the third lifting block;

[0024] The second lower connecting rod is located between the second lifting block and the fourth lifting block, and its two ends are connected to the bottom of the second lifting block and the fourth lifting block;

[0025] A gas spring, positioned between the first lower link and the second lower link, with both ends connected to the first lower link and the second lower link, is used to provide an upward adjustment extension force.

[0026] A lifting locking pin is provided on the second lifting block for locking and / or unlocking the lifting adjustment mechanism.

[0027] In some specific embodiments, the rotation adjustment mechanism includes:

[0028] The turntable is square in shape and has a central hole in the middle. Locking holes are provided around the circumference of the central hole of the turntable.

[0029] The left-turning block is located at the top of the turntable and is slidably connected to one end of the turntable;

[0030] The right-turn block is located at the top of the turntable and is slidably connected to the end of the turntable furthest from it.

[0031] The top of the left turn block connects to the bottom of the left chair leg; the top of the right turn block connects to the bottom of the right chair leg.

[0032] A rotating locking pin is used to insert into and / or remove from the locking hole on the turntable to lock and / or unlock the rotation adjustment.

[0033] In some specific embodiments, the backrest angle adjustment mechanism includes:

[0034] The backrest side panel is located on one side of the seat and is connected to the seat backrest frame.

[0035] The left support plate of the seat is located on one side of the backrest side panel and is coupled to the backrest side panel; a cavity is formed at the connection between the backrest side panel and the left support plate of the seat.

[0036] The rotating component is located inside the cavity;

[0037] A large coil spring is located on the left side of the seat plate away from the backrest side plate and is connected to the rotating assembly to provide a restoring force for the automatic forward rotation of the backrest.

[0038] The adjustment handle is located on the side of the chair back panel away from the left support plate of the seat, and is connected to the end of the rotating assembly away from the large coil spring.

[0039] In some specific embodiments,

[0040] The rotating assembly includes:

[0041] The rotating shaft is connected to a large coil spring at one end and to an adjusting handle at the other end, away from the large coil spring.

[0042] The locking block is fitted onto the pivot and engages with the inner ring rack of the chair back side panel.

[0043] A small coil spring is fitted on the side of the locking block away from the adjusting handle, and is used to reset the adjusting handle;

[0044] A torsion spring is located on the upper side of the locking block, with both ends abutting against the locking block, and is used for the retraction movement of the locking block;

[0045] The retaining pin has one end inserted into the middle hole of the torsion spring, and the other end, away from the torsion spring, is connected to the side panel of the chair back to prevent the torsion spring from falling off.

[0046] In some specific embodiments,

[0047] The rotating armrest assembly includes:

[0048] Upper armrest shell and lower armrest shell;

[0049] The armrest pivot is located on the side of the seat, with one end fixedly connected to the side of the seat and the other end away from the side of the seat located inside the lower armrest shell.

[0050] The handrail fixing component has multiple toothed grooves, which are located inside the lower handrail shell and are fixedly connected to the handrail pivot.

[0051] The handrail rotating component is located near the handrail fixing component. The handrail rotating component is sleeved on the handrail pivot and is rotatably connected to the handrail pivot.

[0052] The side of the handrail rotating component away from the handrail pivot is connected to the inner wall of the lower handrail housing;

[0053] The handrail guide is located on the side of the handrail fixing component away from the handrail rotating component;

[0054] Tension spring, fixed shaft, and chuck;

[0055] The claw has a round hole in the middle, through which it is sleeved on the fixed shaft. One end of the fixed shaft is fixed to the rotating part of the handrail, and one end of the claw engages in the tooth groove of the handrail fixing part. The end of the claw away from the tooth groove is connected to one end of the tension spring. The end of the tension spring away from the claw is connected to the upper handrail shell.

[0056] The upper armrest cover is placed on top of the lower armrest cover.

[0057] In some specific embodiments, the seat headrest assembly includes: a headrest guide rod, a guide rod connector, a hinge, and a headrest plate;

[0058] The headrest guide rod is U-shaped and inserts into the corresponding mounting hole at the top of the chair back, and can be adjusted up and down within the mounting hole; the guide rod connector is fixedly set at the top of the headrest guide rod; one end of the hinge is set at the top of the guide rod connector and is fixedly connected to the guide rod connector; the headrest plate is set at the end of the hinge away from the guide rod connector and is fixedly connected to the guide rod connector.

[0059] In some specific embodiments, the chair leg locking structure includes:

[0060] First locking pin and second locking pin;

[0061] The lock body has a boss structure at one end. The boss structure of the lock body is provided with a first pin hole. The first locking pin can be inserted into and / or pulled out of the first pin hole and the corresponding locking hole of the slide rail to realize the locking or unlocking of the seat position.

[0062] A roller is located at the end of the lock body away from the first locking pin and is used for the seat to slide on the slide rail; the roller is sleeved on the second locking pin.

[0063] In some specific embodiments, it also includes: a life jacket bag, a two-point safety harness, and a life umbrella;

[0064] The life jacket pocket is secured to the underside of the seat with Velcro straps; the two-point seat belts are bolted to both sides of the seat, and the life umbrella is secured to the seat back panel with straps.

[0065] The beneficial effects of this invention are as follows: This invention discloses a mechanic's chair, including a seat surface, a lifting adjustment mechanism, a rotating adjustment mechanism, a leg locking structure, a backrest angle adjustment mechanism, a rotating armrest assembly, and a headrest assembly; the top of a turntable is connected to the bottom of the seat surface; the lifting adjustment mechanism is located at the end of the turntable away from the seat surface, and its top is connected to the end of the turntable away from the seat surface, for adjusting the height of the seat surface; the rotating adjustment mechanism is located at the bottom of the lifting adjustment mechanism, and its top is connected to the bottom of the lifting adjustment mechanism; the leg locking structure is located at the bottom of the rotating adjustment mechanism, with one side connected to the bottom of the rotating adjustment mechanism and the side away from the rotating adjustment mechanism located on a slide rail; the backrest angle adjustment mechanism is located on one side of the seat surface, for adjusting the angle of the backrest of the seat surface; there are two rotating armrest assemblies, respectively located on both sides of the seat surface and connected to the side of the seat surface; the headrest assembly is located at the top of the backrest of the seat surface, and the headrest assembly can be raised and lowered and / or rotated at the top of the backrest. The seat of this invention is aesthetically pleasing, fully functional, easy to operate, and lightweight, meeting the development requirements of the matching model. The seat is equipped with life-saving equipment, enabling rapid evacuation of occupants, providing good protection for occupants, and also offering a certain degree of comfort. Attached Figure Description

[0066] Figure 1 This is a structural schematic diagram of a mechanic's chair according to the present invention;

[0067] Figure 2 This is a schematic diagram of the structure of the chair leg lock of the present invention;

[0068] Figure 3 This is a schematic diagram of the lifting and adjusting mechanism;

[0069] Figure 4 This is a schematic diagram of the rotary adjustment mechanism;

[0070] Figure 5 This is a schematic diagram of the backrest angle adjustment mechanism;

[0071] Figure 6 This is a structural schematic diagram of the rotating handrail assembly;

[0072] Figure 7 This is a structural diagram of the seat headrest assembly.

[0073] In the attached diagram: 1. Chair leg locking structure; 2. Lifting and adjusting mechanism; 3. Rotation adjusting mechanism; 4. Backrest angle adjusting mechanism; 5. Rotating armrest assembly; 6. Seat headrest assembly; 7. Life jacket pocket; 8. Two-point safety belt; 9. Life umbrella; 10. First locking pin; 11. Second locking pin; 12. Roller; 13. Right chair leg; 14. First lower connecting rod; 141. Second lower connecting rod; 15. First lifting block; 151. Fourth lifting block; 152. Third lifting block; 16. First linkage rod; 161. Second linkage rod; 17. Left chair leg; 18. Second lifting block; 19. Lifting and adjusting locking pin; 20. ... 201. First upper linkage; 21. Gas spring; 22. Turntable; 23. Left turn block; 24. Right turn block; 25. Rotary locking pin; 26. Rotating shaft; 27. Small coil spring; 28. Locking block; 29. ​​Backrest side panel; 30. Adjustment handle; 31. Fixing pin; 32. Torsion spring; 33. Left support plate of seat; 34. Large coil spring; 35. Lower armrest shell; 36. Claw; 37. Armrest pivot; 38. Armrest fixing component; 39. Armrest guide component; 40. Armrest rotating component; 41. Tension spring; 42. Upper armrest shell; 43. Headrest guide rod; 44. Guide rod connector; 45. Hinge; 46. Headrest plate. Detailed Implementation

[0074] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar symbols represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention. In the description of the present invention, it should be understood that the terms "top", "bottom", "inner", "outer", "axis", "circumferential", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention or simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" and "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0075] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," "fixing," "linking," "hinging," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0076] In the description of this specification, references to terms such as "an embodiment," "some embodiments," "example," "specific example," or "a specific embodiment" or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, illustrative expressions of terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0077] Reference Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 7A mechanic's chair, as shown, includes a seat surface with a turntable 22 mounted at the bottom, the top of which is connected to the bottom of the seat surface. A height adjustment mechanism 2 is located at the end of the turntable 22 away from the seat surface, its top connected to this end, and is used to adjust the height of the seat surface. A rotation adjustment mechanism 3 is located at the bottom of the height adjustment mechanism 2, its top connected to its bottom. A leg locking structure 1 is located at the bottom of the rotation adjustment mechanism 3, one side connected to its bottom, and the other side mounted on a slide rail. A backrest angle adjustment mechanism 4 is located on one side of the seat surface, used to adjust the angle of the backrest. Two rotating armrest assemblies 5 are located on either side of the seat surface and connected to its sides. A headrest assembly 6 is located at the top of the backrest, and can be raised, lowered, and / or rotated at the top of the backrest. In this embodiment, the mechanic's chair involved in the present invention mainly comprises a leg lock, a lifting adjustment mechanism 2, a rotation adjustment mechanism 3, a backrest angle adjustment mechanism 4, an armrest assembly, a headrest assembly, a life jacket pocket 7, a two-point safety belt 8, and a life umbrella 9. The main structure is primarily manufactured from ultra-hard aluminum alloy and titanium alloy; spring parts are made of carbon spring steel wire, coil spring parts are made of spring steel; the leg lock and locking pins are made of structural steel; the armrest shell and headrest plate 46 are made of carbon fiber; the armrest cover is made of polycarbonate; the seat cushion is made of polyurethane foam; and the gas spring 21, hinge 45, life jacket pocket 7, two-point safety belt 8, and life umbrella 9 are all from rack-mounted products.

[0078] In some specific embodiments, the lifting adjustment mechanism 2 includes a square support frame, the top of which is fixedly connected to the bottom of the turntable 22, and the bottom of which is fixedly connected to the top of the rotary adjustment mechanism 3. The support frame includes a left chair leg 17, a right chair leg 13, a first lower connecting rod 14, a first lower connecting rod 141, a first upper connecting rod 201, and a second upper connecting rod 20. The first upper connecting rod 201 and the second upper connecting rod 20 are disposed between the left chair leg 17 and the right chair leg 13, and their two ends are fixedly connected to the tops of the left chair leg 17 and the right chair leg 13, respectively. The first lifting block 15, the second lifting block 18, the third lifting block 152, and the fourth lifting block 151 are all triangular. A first lifting block 15, a second lifting block 18, a third lifting block 152, and a fourth lifting block 151 are disposed between the left chair leg 17 and the right chair leg 13. The first lifting block 15 is disposed at one end of the left chair leg 17 and is rotatably connected to one end of the first upper connecting rod 201. The second lifting block 18 is disposed at the end of the left chair leg 17 away from the first lifting block 15 and is rotatably connected to one end of the second upper connecting rod 201. The third lifting block 152 is disposed at one end of the right chair leg 13 and is rotatably connected to the end of the first upper connecting rod 201 away from the first lifting block 15. The fourth lifting block 151 is disposed at the end of the right chair leg 13 away from the third lifting block 152 and is rotatably connected to the end of the second upper connecting rod 20 away from the second lifting block 18.

[0079] In some specific embodiments, the lifting adjustment mechanism 2 further includes a first linkage 16 and a second linkage 161.

[0080] A first connecting rod 16 is disposed between a first lifting block 15 and a second lifting block 18, with both ends connected to the bottom of the first lifting block 15 and the second lifting block 18. A second connecting rod 161 is disposed between a third lifting block 152 and a fourth lifting block 151, with both ends connected to the bottom of the third lifting block 152 and the fourth lifting block 151. A first lower connecting rod 14 is disposed between a first lifting block 15 and a third lifting block 152, with both ends connected to the bottom of the first lifting block 15 and the third lifting block 152. A first lower connecting rod 141 is disposed between a second lifting block 18 and a fourth lifting block 151, with both ends connected to the bottom of the second lifting block 18 and the fourth lifting block 151. A gas spring 21 is disposed between the first lower connecting rod 14 and the first lower connecting rod 141, with both ends connected to the first lower connecting rod 14 and the first lower connecting rod 141, for providing an upward adjustment extension force. The seat has a height adjustment function. When the height unlock handle is pulled, the seat can be raised with the help of the gas spring 21. The occupant can also use their own weight to force the seat to move downward to adjust the seat height.

[0081] The bottom of the support frame is fixedly connected to the rotary adjustment mechanism 3, and the top of the support frame is fixedly connected to the seat plate. The first lifting block 15 and the second lifting block 18 are mounted on the second upper connecting rod 20 and can rotate around the second upper connecting rod 20 to realize the lifting and lowering adjustment of the seat plate. The lifting locking pin 19 can realize the locking and unlocking of the lifting position. The lower parts of the first lifting block 15 and the second lifting block 18 are connected by the first connecting rod 16 to ensure synchronous movement. The left side structure is symmetrical to the right side structure. The gas spring 21 provides the upward adjustment extension force. The lifting locking pin 19 is set on the second lifting block 18 and is used to lock and / or unlock the lifting adjustment mechanism 2.

[0082] In some specific embodiments, the rotation adjustment mechanism 3 includes a square turntable 22 with a central hole and a locking hole circumferentially arranged around the central hole. A left-turning block 23 is located at the top of the turntable 22 and is slidably connected to one end of the turntable 22. A right-turning block 24 is located at the top of the turntable 22 and is slidably connected to the end of the turntable 22 away from the turntable 22. The top of the left-turning block 23 is connected to the bottom end of the left chair leg 17; the top of the right-turning block 24 is connected to the bottom end of the right chair leg 13. A rotation locking pin 25 is used to insert into and / or remove from the locking hole on the turntable 22 to lock and / or unlock the rotation adjustment. It should be noted that the right-turning block 24 and the left-turning block 23 are mounted on the turntable 22. The right-turning block 24 and the left-turning block 23 are connected to the right chair leg 13 and the left chair leg 17 respectively, enabling rotational adjustment of the lifting and lowering mechanism 2 and above. The rotation locking pin 25 is mounted on the right-turning block 24, and locking and unlocking of the rotational adjustment can be achieved by inserting or removing it from the locking hole on the turntable 22. The seat has a rotational adjustment function; when the rotation unlocking handle is turned, the occupant can use their legs to push against the ground to rotate the seat.

[0083] In some specific embodiments, the backrest angle adjustment mechanism 4 includes a backrest side plate 29, disposed on one side of the seat and connected to the seat back frame. A seat plate left support plate 33 is disposed on one side of the backrest side plate 29 and coupled to it. A cavity is formed at the connection between the backrest side plate 29 and the seat plate left support plate 33. A rotating assembly is disposed within the cavity. A large coil spring 34 is disposed on the side of the seat plate left support plate 33 away from the backrest side plate 29 and connected to the rotating assembly, providing a restoring force for the automatic forward rotation of the backrest. An adjustment handle 30 is disposed on the side of the backrest side plate 29 away from the seat plate left support plate 33 and connected to the end of the rotating assembly away from the large coil spring 34. The seat has a backrest angle adjustment function; when the backrest unlock handle is pulled and the occupant does not lean back, the backrest can automatically rotate forward. The occupant can also adjust the backrest angle by leaning back.

[0084] In this embodiment, the occupant moves the adjustment handle 30, causing the rotating shaft 26 to rotate and pushing the locking block 28 to move outward. The locking block 28 engages with the inner ring rack of the seat back side panel 29, thereby locking the seat back side panel 29. When the adjustment handle 30 is released, the small coil spring 27 resets the adjustment handle 30. The torsion spring 32, which is mounted on the fixing pin 31 of the torsion spring 32, causes the locking block 28 to retract, thereby unlocking the left side panel of the seat back. The large coil spring 34 is used to provide the restoring force for the automatic forward rotation of the seat back.

[0085] In some specific embodiments, the rotating assembly includes a shaft 26, one end of which is connected to a large coil spring 34, and the other end, away from the large coil spring 34, is connected to an adjusting handle 30. A locking block 28 is sleeved on the shaft 26 and engages with the inner ring rack of the chair back side panel 29. A small coil spring 27 is sleeved on the side of the locking block 28 away from the adjusting handle 30 to reset the adjusting handle 30. A torsion spring 32 is disposed on the upper side of the locking block 28, with both ends abutting against the locking block 28, for the retraction movement of the locking block 28. A fixing pin 31 is inserted at one end into the central circular hole of the torsion spring 32, and the other end, away from the torsion spring 32, is connected to the chair back side panel 29 to prevent the torsion spring 32 from falling off.

[0086] In some specific embodiments, the rotating armrest assembly 5 includes an upper armrest shell 42 and a lower armrest shell 35. An armrest pivot 3726 is disposed on the side of the seat, with one end fixedly connected to the side of the seat and the other end located inside the lower armrest shell 35. An armrest fixing member 38, having multiple toothed grooves, is disposed inside the lower armrest shell 35 and fixedly connected to the armrest pivot 37. An armrest rotating member 40 is disposed adjacent to the armrest fixing member 38, and is sleeved on the armrest pivot 37, rotatably connected to it. The side of the armrest rotating member 40 away from the armrest pivot 37 is connected to the inner wall of the lower armrest shell 35. An armrest guide member 39 is disposed on the side of the armrest fixing member 38 away from the armrest rotating member 40. A tension spring 41, a fixing shaft, and a locking claw 36 are also included. The pawl 36 has a central hole through which it is fitted onto a fixed shaft. One end of the fixed shaft is fixed to the armrest rotating member 40, and one end of the pawl 36 engages with the toothed groove of the armrest fixing member 38. The end of the pawl 36 away from the toothed groove is connected to one end of the tension spring 41; the end of the tension spring 41 away from the pawl 36 is connected to the upper armrest shell 42. The upper armrest shell 42 covers the upper end of the lower armrest shell 35.

[0087] In this embodiment, the armrest pivot 37 is fixed to the seat structure, and the armrest fixing member 38 is fixedly connected to the armrest pivot 37. The lower armrest shell 35, the armrest rotating member 40, the tension spring 41, and the pawl 36 are fixedly connected together. When the occupant pulls the armrest upward, the lower armrest shell 35 drives the pawl 36 to rotate upward. When it rotates to the toothed position of the armrest fixing member 38, the force of the tension spring 41 causes the pawl 36 to engage with the teeth of the left armrest fixing member 38, thereby locking the armrest. The left armrest guide member 39 can rotate around the armrest pivot 37. When it rotates to the highest position, the armrest guide member 39 can lift the pawl 36, separating the pawl 36 from the armrest fixing member 38, thus unlocking the armrest. The right armrest and the left armrest have a symmetrical structure. The seat armrests have a rotating adjustment function. Passengers can adjust the armrests upwards by pulling them up. After the armrests are adjusted upwards, they are locked downwards. Only by adjusting the armrests to the highest position and rotating them backwards can the armrests return to the lowest position.

[0088] In some specific embodiments, the seat headrest assembly 6 includes a headrest guide rod 43, a guide rod connector 44, a hinge 45, and a headrest plate 46. The headrest guide rod 43 is U-shaped and inserts into a corresponding mounting hole at the top of the seat back, and can be adjusted up and down within the mounting hole. The guide rod connector 44 is fixedly disposed on the top of the headrest guide rod 43. One end of the hinge 45 is disposed at the top of the guide rod connector 44 and is fixedly connected to the guide rod connector 44. The headrest plate 46 is disposed at the end of the hinge 45 away from the guide rod connector 44 and is fixedly connected to the guide rod connector 44.

[0089] In this embodiment, the headrest guide rod 43 and the guide rod connector 44 are fixedly connected to form the headrest support structure. The headrest guide rod 43 is inserted into the corresponding mounting hole in the chair back and can be adjusted up and down within the mounting hole. The lower end of the hinge 45 is fixed to the guide rod connector 44, and the upper end of the hinge 45 is fixed to the headrest plate 46. The headrest plate 46 provides support for the headrest foam. The upper and lower parts of the hinge 45 can rotate relative to each other to realize the rotation adjustment of the headrest angle. The seat headrest has the functions of height adjustment and rotation adjustment. The headrest is inserted into the chair back frame through two guide rods. The occupant can adjust the height position of the headrest by moving the headrest up or down. The hinge 45 is installed on the headrest frame to realize the headrest angle adjustment function.

[0090] In some specific embodiments, the chair leg lock structure 1 includes a first locking pin 10 and a second locking pin 11. The lock body has a boss structure at one end, with a first pin hole on the boss structure. The first locking pin 10 can be inserted into and / or pulled out of the first pin hole and the corresponding locking hole of the slide rail to lock or unlock the seat position. A roller 12 is located at the end of the lock body away from the first locking pin 10 and is used for the seat to slide on the slide rail. The roller 12 is sleeved on the second locking pin 11.

[0091] In this embodiment, the seat leg lock cross-section is designed according to the aircraft slide rail cross-section. Front and rear locking pins are installed within the front boss structure of the seat leg lock, which can be inserted into or removed from the corresponding locking holes of the slide rail to lock or unlock the seat's front and rear positions. A roller 12 is installed at the rear end of the seat leg lock, allowing the seat to slide on the slide rail. The seat leg lock pin shaft serves as the rotating shaft 26 of the roller 12. In this application, the seat leg lock is designed according to the slide rail interface provided by the host computer. When the front and rear unlocking handles are moved, the first locking pin 10 and the second locking pin 11 are pulled out of the slide rail locking holes, allowing the seat to slide smoothly on the slide rail.

[0092] In some specific embodiments, a life jacket pocket 7, a two-point seatbelt 8, and a life umbrella 9 are also included. The life jacket pocket 7 is secured to the underside of the seat via Velcro straps. The two-point seatbelt 8 is bolted to both sides of the seat base, and the life umbrella 9 is secured to the seat back panel via straps. The seat is equipped with the two-point seatbelt 8. The life jacket pocket 7, installed under the seat base, can store life jackets. The life umbrella 9 is installed in a cavity behind the seat back, which occupants can use to escape in an emergency during flight.

[0093] By adopting the above-disclosed technical solution of this invention, the following beneficial effects are obtained:

[0094] This invention discloses a mechanic's chair, comprising a seat surface, a lifting adjustment mechanism 2, a rotation adjustment mechanism 3, a leg locking structure 1, a backrest angle adjustment mechanism 4, a rotating armrest assembly 5, and a headrest assembly 6; the top of a turntable 22 is connected to the bottom of the seat surface; the lifting adjustment mechanism 2 is located at the end of the turntable 22 away from the seat surface, and its top is connected to the end of the turntable 22 away from the seat surface, for adjusting the height of the seat surface; the rotation adjustment mechanism 3 is located at the bottom of the lifting adjustment mechanism 2, and its top is connected to the bottom of the lifting adjustment mechanism 2; the leg locking structure 1 is located at the bottom of the rotation adjustment mechanism 3, with one side connected to the bottom of the rotation adjustment mechanism 3 and the side away from the rotation adjustment mechanism 3 mounted on a slide rail; the backrest angle adjustment mechanism 4 is located on one side of the seat surface, for adjusting the angle of the backrest of the seat surface; there are two rotating armrest assemblies 5, respectively located on both sides of the seat surface and connected to the side of the seat surface; the headrest assembly 6 is located at the top of the backrest of the seat surface, and the headrest assembly 6 can be raised and lowered and / or rotated at the top of the backrest. This invention relates to a mechanic's seat, which is aesthetically pleasing, fully functional, and easy to operate. The main structural components of the seat are machined from aerospace-grade aluminum and titanium alloys, resulting in a lightweight design. Assembly and maintenance require no special tools or equipment. The seat is equipped with life-saving devices, enabling rapid occupant evacuation. The seat meets the requirements of CCAR-25.561, 562, and 785, providing good protection for occupants and offering a degree of comfort.

[0095] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A mechanic's chair, characterized in that, include: The seat surface has a turntable installed at the bottom, with the top of the turntable connected to the bottom of the seat surface; The height adjustment mechanism is located at the end of the turntable away from the seat surface. The top of the height adjustment mechanism is connected to the end of the turntable away from the seat surface, and is used to adjust the height of the seat surface. A rotary adjustment mechanism is located at the bottom of the lifting adjustment mechanism, and the top of the rotary adjustment mechanism is connected to the bottom of the lifting adjustment mechanism; The chair leg lock structure is located at the bottom of the rotating adjustment mechanism, with one side connected to the bottom of the rotating adjustment mechanism and the other side away from the rotating adjustment mechanism mounted on the slide rail; The backrest angle adjustment mechanism is located on one side of the seat surface and is used to adjust the angle of the seat back. There are two rotating armrest components, one on each side of the seat surface and the other on the side of the seat surface. The seat headrest assembly is located at the top of the seat back, and the seat headrest assembly can be raised and lowered and / or rotated at the top of the seat back; The lifting and adjusting mechanism includes: The support frame is square in shape, with its top end fixedly connected to the bottom end of the turntable and its bottom end fixedly connected to the top of the rotation adjustment mechanism; The support frame includes: a left chair leg, a right chair leg, a first lower link, a second lower link, a first upper link, and a second upper link; The first upper link and the second upper link are located between the left chair leg and the right chair leg, and the two ends of the first upper link and the second upper link are fixedly connected to the top of the left chair leg and the right chair leg, respectively. The first lifting block, the second lifting block, the third lifting block, and the fourth lifting block are all triangular in shape; The first lifting block, the second lifting block, the third lifting block, and the fourth lifting block are disposed between the left chair leg and the right chair leg. The first lifting block is disposed at one end of the left chair leg and is rotatably connected to one end of the first upper connecting rod. The second lifting block is disposed at the end of the left chair leg away from the first lifting block and is rotatably connected to one end of the second upper connecting rod. The third lifting block is disposed at one end of the right chair leg and is rotatably connected to the end of the first upper connecting rod away from the first lifting block. The fourth lifting block is disposed at the end of the right chair leg away from the third lifting block and is rotatably connected to the end of the second upper connecting rod away from the second lifting block. The lifting and adjusting mechanism also includes: First linkage and second linkage; The first linkage is located between the first lifting block and the second lifting block, and its two ends are connected to the bottom of the first lifting block and the second lifting block; The second linkage is located between the third and fourth lifting blocks, with both ends connected to the bottom of the third and fourth lifting blocks; The first lower connecting rod is located between the first lifting block and the third lifting block, and its two ends are connected to the bottom of the first lifting block and the third lifting block; The second lower connecting rod is located between the second lifting block and the fourth lifting block, and its two ends are connected to the bottom of the second lifting block and the fourth lifting block; A gas spring is disposed between the first lower link and the second lower link, with both ends connected to the first lower link and the second lower link, and is used to provide an upward adjustment extension force; A lifting locking pin is provided on the second lifting block for locking and / or unlocking the lifting adjustment mechanism.

2. The mechanic's chair according to claim 1, characterized in that, The rotary adjustment mechanism includes: The turntable is square in shape and has a central hole in the middle. Locking holes are provided around the circumference of the central hole of the turntable. The left-turning block is located at the top of the turntable and is slidably connected to one end of the turntable; The right-turn block is located at the top of the turntable and is slidably connected to the end of the turntable furthest from it. The top of the left turn block connects to the bottom of the left chair leg; the top of the right turn block connects to the bottom of the right chair leg. A rotating locking pin is used to insert into and / or remove from the locking hole on the turntable to lock and / or unlock the rotary adjustment mechanism.

3. The mechanic's chair according to claim 1, characterized in that, The backrest angle adjustment mechanism includes: The backrest side panel is located on one side of the seat and is connected to the seat backrest frame. The left support plate of the seat is located on one side of the backrest side panel and is coupled to the backrest side panel; a cavity is formed at the connection between the backrest side panel and the left support plate of the seat. The rotating component is located inside the cavity; A large coil spring is located on the left side of the seat plate away from the backrest side plate and is connected to the rotating assembly to provide a restoring force for the automatic forward rotation of the backrest. The adjustment handle is located on the side of the chair back panel away from the left support plate of the seat, and is connected to the end of the rotating assembly away from the large coil spring.

4. The mechanic's chair according to claim 3, characterized in that, The rotating assembly includes: The shaft is connected to a large coil spring at one end and to an adjusting handle at the other end, away from the large coil spring. The locking block is fitted onto the pivot and engages with the inner ring rack of the chair back side panel. A small coil spring is fitted on the side of the locking block away from the adjusting handle, and is used to reset the adjusting handle; A torsion spring is located on the upper side of the locking block, with both ends abutting against the locking block, and is used for the retraction movement of the locking block; The retaining pin has one end inserted into the middle round hole of the torsion spring, and the other end away from the torsion spring is connected to the side panel of the chair back to prevent the torsion spring from falling off.

5. The mechanic's chair according to claim 1, characterized in that, The rotating armrest assembly includes: Upper armrest shell and lower armrest shell; The armrest pivot is located on the side of the seat, with one end fixedly connected to the side of the seat and the other end away from the side of the seat located inside the lower armrest shell. The handrail fixing component has multiple toothed grooves, which are located inside the lower handrail shell and are fixedly connected to the handrail pivot. The handrail rotating component is located near the handrail fixing component. The handrail rotating component is sleeved on the handrail pivot and is rotatably connected to the handrail pivot. The side of the handrail rotating component away from the handrail pivot is connected to the inner wall of the lower handrail housing; The handrail guide is located on the side of the handrail fixing component away from the handrail rotating component; Tension spring, fixed shaft, and chuck; The claw has a round hole in the middle, through which it is sleeved on the fixed shaft. One end of the fixed shaft is fixed to the rotating part of the handrail, and one end of the claw engages in the tooth groove of the handrail fixing part. The end of the claw away from the tooth groove is connected to one end of the tension spring. The end of the tension spring away from the claw is connected to the upper handrail shell. The upper armrest cover is placed on top of the lower armrest cover.

6. The mechanic's chair according to claim 1, characterized in that, The seat headrest assembly includes: a headrest guide rod, a guide rod connector, a hinge, and a headrest plate; The headrest guide rod is U-shaped and inserts into the corresponding mounting hole at the top of the chair back, and can be adjusted up and down within the mounting hole; the guide rod connector is fixedly set at the top of the headrest guide rod; one end of the hinge is set at the top of the guide rod connector and is fixedly connected to the guide rod connector; the headrest plate is set at the end of the hinge away from the guide rod connector and is fixedly connected to the guide rod connector.

7. The mechanic's chair according to claim 1, characterized in that, The chair leg locking structure includes: First locking pin and second locking pin; The lock body has a boss structure at one end, and a first pin hole is provided on the boss structure. The first locking pin can be inserted into and / or pulled out of the first pin hole and the corresponding locking hole of the slide rail to lock or unlock the seat position. A roller is located at the end of the lock body away from the first locking pin and is used for the seat to slide on the slide rail; the roller is sleeved on the second locking pin.

8. The mechanic's chair according to claim 1, characterized in that, It also includes: life jacket bags, two-point harnesses, and life umbrellas; The life jacket pocket is secured to the underside of the seat with Velcro straps; the two-point seat belts are secured to both sides of the seat surface with bolts, and the life umbrella is secured to the seat back panel with straps.

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