Novel astronaut seat

Abstract

The utility model provides a novel astronaut seat. The novel astronaut seat comprises a backrest assembly, a seat basin assembly, a leg support assembly, a foot support assembly, a headrest assembly, a connecting rod assembly and a handle unlocking assembly, one end of the chair basin assembly is connected with the backrest assembly through the first rotating node, and the other end of the chair basin assembly is connected with the leg support assembly through the fourth rotating node; one end of the connecting rod assembly is connected with the backrest assembly through the second rotating node, and the other end of the connecting rod assembly is connected with the leg support assembly through the third rotating node; and the handle unlocking assembly is arranged at the second rotating node and is used for relieving the rotation limitation of the second rotating node. Synchronous adjustment or locking of a plurality of joints can be achieved only by adjusting or locking one rotating joint, the stability and the convenience are high, and the requirements of astronauts for various seat postures in flight missions are met.

Description

Technical Field

[0001] The utility model relates to the field of aerospace equipment, in particular to a novel astronaut seat. Background Art

[0002] Astronaut seats are seats installed in the spacecraft cabin for astronauts to sit in. Usually, astronauts may experience various situations such as takeoff, flight, landing and emergency during a complete space flight. If the astronaut seat can be easily adjusted to a more suitable state under different flight conditions, the safety of the astronauts can be protected to the greatest extent. At present, the astronaut seats in the prior art are either customized fixed seats without any adjustment function; or seats with adjustment function, but there are many points that need to be adjusted, and each adjustment point needs to be locked separately, and the stability and convenience are poor. Therefore, the field is in urgent need of a new type of astronaut seat, which can realize the seat adjustment function more conveniently and meet the various seat posture requirements of astronauts in flight missions. Utility Model Content

[0003] The purpose of the utility model is to provide a novel astronaut seat, so as to solve the above-mentioned problems existing in the prior art.

[0004] In order to achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0005] A novel astronaut seat comprises a backrest assembly, a seat basin assembly, a leg support assembly, a foot support assembly, a headrest assembly, a connecting rod assembly and a handle unlocking assembly;

[0006] The backrest assembly is provided with left and right guard plates on both sides, the upper end of which is connected to the headrest assembly, and the lower end of which is provided with a first rotation node and a second rotation node in sequence from the outside to the inside;

[0007] The lower end of the leg support assembly is connected to the foot support assembly, and the upper end is provided with a third rotation node and a fourth rotation node in sequence from the outside to the inside;

[0008] One end of the seat basin assembly is connected to the backrest assembly via the first rotation node, and the other end is connected to the leg support assembly via the fourth rotation node;

[0009] One end of the connecting rod assembly is connected to the backrest assembly via the second rotation node, and the other end is connected to the leg support assembly via the third rotation node;

[0010] The handle unlocking assembly is arranged at the second rotation node, and is used for releasing the rotation restriction of the second rotation node.

[0011] Preferably, the second rotating node includes a node housing, a fixing member, a limiting portion, a bearing sleeve and a butterfly shaft; the node housing is connected to the fixing member, and the fixing member is connected to the backrest assembly; the bearing sleeve is fixed to the connecting rod assembly and movably sleeved on the outside of the fixing member so that the connecting rod assembly can rotate around the fixing member; a limiting protrusion surface is provided on the inner side of the bearing sleeve; the butterfly shaft is rotatably arranged inside the fixing member; reserved holes are provided on both sides of the fixing member, and a limiting portion is provided in the reserved hole; the raised end of the butterfly shaft is rotated to the limiting portion, so that the limiting portion can protrude out of the reserved hole, so that the limiting portion contacts the limiting protrusion surface to limit the rotation of the connecting rod assembly; the butterfly shaft is connected to the handle unlocking assembly.

[0012] Preferably, the connecting rod assembly includes a left connecting rod and a right connecting rod, and the second rotating nodes are set to two, which are respectively arranged on both sides of the backrest assembly and connected to the left connecting rod or the right connecting rod; the butterfly shafts in the two second rotating nodes are connected through a linkage shaft, and only one of the butterfly shafts is connected to the handle unlocking assembly.

[0013] Preferably, the handle unlocking assembly includes a handle housing, a button, a movable rod, a handle shaft and a handle locking portion, the handle shaft is fixed in the handle housing and connected to the butterfly shaft; the handle locking portion is provided with a movable protrusion, the node housing is provided with a slot for limiting the movable protrusion, the rod body of the movable rod presses the movable protrusion into the slot to limit the rotation of the handle unlocking assembly; the outer end of the movable rod is connected to the button, and the inner end rod body is provided with a groove so that the movable protrusion pops out of the slot at the groove.

[0014] Preferably, the headrest assembly includes a headrest guard plate, a sliding rod and a locking piece, one end of the sliding rod is connected to the headrest guard plate, and the other end passes through the locking piece for limiting, and the locking piece is fixedly connected to the backrest assembly.

[0015] Preferably, a telescopic movable part is provided at the lower end of the leg rest assembly, the sliding parts on both sides of the telescopic movable part are sleeved in the guard plate of the leg rest assembly, the foot rest assembly is rotatably connected to the lower end of the telescopic movable part, a plurality of limiting grooves are sequentially provided on the sliding part, and the leg rest assembly is provided with a telescopic locking part which cooperates with the limiting groove to limit the position.

[0016] Preferably, a booster spring is provided at the first rotation node to rotate the seat basin assembly toward the backrest assembly.

[0017] Preferably, a plurality of quick-release pins for limiting and fixing are provided on the back of the backrest assembly.

[0018] The beneficial effects of the utility model are:

[0019] The utility model provides a novel astronaut seat. Through the linkage characteristics of the design structure, the astronaut seat can be easily adjusted to a more suitable state, which can protect the safety of the astronauts to the greatest extent. Only one rotation node needs to be adjusted or locked to achieve synchronous adjustment or locking of multiple joints. It has strong stability and convenience, and can meet the various seat posture requirements of astronauts in flight missions. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of a new astronaut seat in an embodiment of the utility model;

[0021] Figure 2 yes Figure 1 A schematic diagram of the structure of the new astronaut seat from another angle is shown;

[0022] Figure 3 yes Figure 1 A schematic diagram of the back structure of the new astronaut seat is shown;

[0023] Figure 4 It is a schematic cross-sectional structure diagram of the second rotation node in an embodiment of the utility model;

[0024] Figure 5 It is a structural schematic diagram of the butterfly shaft in the embodiment of the utility model;

[0025] Figure 6 It is a structural schematic diagram of a handle unlocking assembly in an embodiment of the utility model;

[0026] Figure 7 This is a schematic diagram of the structure of the headrest assembly in the embodiment of the utility model;

[0027] Figure 8 It is a structural schematic diagram of the leg support assembly in an embodiment of the utility model;

[0028] Fig. 9 It is a schematic diagram of the structure of the new astronaut seat in the folded state in the embodiment of the utility model;

[0029] Fig.10 It is a schematic diagram of the structure of the new astronaut seat in the expanded state in the embodiment of the utility model;

[0030] Fig.11 It is a schematic diagram of the stretcher state structure of the new astronaut seat in the embodiment of the utility model;

[0031] In the figure, 11-backrest assembly, 12-seat basin assembly, 13-leg support assembly, 14-foot support assembly, 15-headrest assembly, 16-connecting rod assembly, 17-handle unlocking assembly, 21-first rotation node, 22-second rotation node, 23-third rotation node, 24-fourth rotation node, 31-node housing, 32-fixing part, 33-limiting part, 34-bearing sleeve, 35-butterfly shaft, 36-limiting protrusion surface, 37-linkage shaft, 41-handle housing, 42-button, 43-movable rod, 44-handle shaft, 45-handle locking part, 51-headrest guard plate, 52-sliding rod, 53-locking slide, 54-headrest locking button, 55-locking connecting rod, 61-telescopic movable part, 62-sliding part, 63-limiting groove, 64-telescopic locking part, 71-assisting spring, 72-constraint assembly, 73-quick release pin. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation methods described here are only used to explain the utility model and are not used to limit the utility model.

[0033] like Figure 1-3 As shown, the utility model provides a novel astronaut seat, including a backrest assembly 11, a seat basin assembly 12, a leg support assembly 13, a foot support assembly 14, a headrest assembly 15, a connecting rod assembly 16 and a handle unlocking assembly 17;

[0034] The backrest assembly 11 is provided with left and right guard plates on both sides, the upper end of which is connected to the headrest assembly 15, and the lower end of which is provided with a first rotation node 21 and a second rotation node 22 in sequence from the outside to the inside;

[0035] The lower end of the leg support assembly 13 is connected to the foot support assembly 14, and the upper end is provided with a third rotation node 23 and a fourth rotation node 24 in sequence from the outside to the inside;

[0036] One end of the seat basin assembly 12 is connected to the backrest assembly 11 via the first rotation node 21, and the other end is connected to the leg support assembly 14 via the fourth rotation node 24;

[0037] One end of the connecting rod assembly 16 is connected to the backrest assembly 11 through the second rotation node 22, and the other end is connected to the leg support assembly 13 through the third rotation node 23;

[0038] The handle unlocking component 17 is disposed at the second rotation node 22 and is used to release the rotation restriction of the second rotation node 22 .

[0039] In this embodiment, the backrest assembly 11, the seat basin assembly 12, the leg support assembly 13 and the connecting rod assembly 16 form a four-bar linkage mechanism. The four angles between the backrest assembly 11 and the seat basin assembly 12, between the backrest assembly 11 and the connecting rod assembly 16, between the seat basin assembly 12 and the leg support assembly 13, and between the connecting rod assembly 16 and the leg support assembly 13 can be adjusted synchronously. The seat adjustment can be locked and unlocked by relying only on the handle unlocking assembly 17 in cooperation with the second rotation node 22.

[0040] In this embodiment, the new astronaut seat is formed by carbon fiber composite layup using lightweight composite material technology, and a hollow design is used on each component of the seat, so that the seat can meet the requirements of lightweight design while meeting the strength requirements.

[0041] like Figure 4-5 As shown, in this embodiment, the second rotation node 22 has a locking function; the second rotation node 22 includes a node housing 31, a fixing member 32, a limiting portion 33, a bearing sleeve 34 and a butterfly shaft 35; the node housing 31 is connected to the fixing member 32, and the fixing member 32 is connected to the backrest assembly 11; the bearing sleeve 34 is fixed to the connecting rod assembly 16 and movably sleeved on the outside of the fixing member 32 so that the connecting rod assembly 16 rotates around the fixing member 32; the inner side of the bearing sleeve 34 A limiting protrusion 36 is provided; the butterfly shaft 35 is rotatably arranged inside the fixing member 32; reserved holes are provided on both sides of the fixing member 32, and a limiting portion 33 is provided in the reserved hole; when the raised end of the butterfly shaft 35 rotates to the limiting portion 33, the butterfly shaft 35 can support the limiting portion 33 and protrude out of the reserved hole, so that the limiting portion 33 contacts the limiting protrusion 36 on the bearing sleeve 34 to limit the rotation of the bearing sleeve 34, thereby limiting the rotation of the connecting rod assembly 16, and realizing the adjustment locking of the four-bar linkage mechanism. The butterfly shaft 35 is connected to the handle unlocking assembly 17, and the handle unlocking assembly 17 is controlled to control the butterfly shaft 35 to rotate, so that the raised end of the butterfly shaft 35 is away from the limiting portion 33, and the limiting portion 33 retracts into the reserved hole under the action of the reset spring to release the lock on the bearing sleeve 34.

[0042] In this embodiment, the connecting rod assembly 16 includes a left connecting rod and a right connecting rod, and the second rotation nodes 22 are set to two, which are respectively arranged on both sides of the backrest assembly 11 and connected to the left connecting rod or the right connecting rod; the butterfly shafts 35 in the two second rotation nodes 22 are connected through a linkage shaft 37, and only one of the butterfly shafts 35 is connected to the handle unlocking assembly 17, so that one handle unlocking assembly 17 can simultaneously unlock or lock the two second rotation nodes 22.

[0043] like Figure 6As shown, in this embodiment, the handle unlocking assembly 17 includes a handle housing 41, a button 42, a movable rod 43, a handle shaft 44 and a handle locking portion 45, wherein the handle shaft 44 is fixed in the handle housing 41 and connected to the butterfly shaft 35; the handle locking portion 45 is provided with a movable protrusion, and the node housing 31 is provided with a slot for limiting the movable protrusion, and a spring is provided in the handle locking portion 45 to make the movable protrusion naturally bounce upward, and the rod body of the movable rod 43 presses the movable protrusion into the slot to limit the rotation of the handle unlocking assembly 17; the outer end of the movable rod 43 is connected to the button 42, and the inner end rod body is provided with a groove, when the button 42 is pressed downward, the groove moves to the handle locking portion 45, the movable protrusion is no longer subjected to the pressure of the movable rod 43, and pops up from the slot upward, and the handle unlocking assembly 17 can rotate freely, thereby controlling the rotation of the butterfly shaft 35 to realize the unlocking adjustment of the four-bar linkage mechanism. A return spring is provided between the button 42 and the movable rod 43 and on the handle shaft 44. When the seat adjustment is completed, the return spring will restore the handle unlocking assembly 17 to the locked state to avoid the risk of accidents caused by forgetting to lock.

[0044] like Figure 7 As shown, in this embodiment, the headrest assembly 15 includes a headrest guard plate 51, a slide bar 52 and a locking member 53. One end of the slide bar 52 is connected to the headrest guard plate 51, and the other end passes through the locking member for limiting position. The locking member is fixedly connected to the backrest assembly 11. The locking member specifically includes a locking slide 53, a headrest locking button 54 and a locking link 55. By pressing the headrest locking button 54, the locking link 55 is driven to move, and the slide bar 52 located in the locking slide 53 is limited or released.

[0045] like Figure 8 As shown, in this embodiment, a telescopic movable part 61 is provided at the lower end of the leg rest assembly 13, and the sliding parts 62 on both sides of the telescopic movable part 61 are mounted in the guard plate of the leg rest assembly 13, and the foot rest assembly 14 is rotatably connected to the lower end of the telescopic movable part 61, and a plurality of limiting grooves 63 are sequentially provided on the sliding part 62, and a telescopic locking part 64 which cooperates with the limiting groove 63 for limiting the position is provided on the leg rest assembly 13.

[0046] The specific use process of the new astronaut seat provided in this embodiment is as follows:

[0047] like Fig. 9As shown, when the seat is not needed, the button 42 of the handle unlocking assembly 17 is pressed and the handle unlocking assembly 17 is rotated, and the seat basin assembly 12 and the leg support assembly 13 are synchronously folded through the connecting rod assembly 16. When the seat is folded into place, the handle unlocking assembly 17 is slowly returned to its original position by means of the restoring force of the return spring in the handle unlocking assembly 17 to lock the seat; then the button 42 on the handle unlocking assembly 17 is released. In this embodiment, a booster spring 71 can also be provided at the first rotation node 21 to automatically fold the seat under the action of the booster spring 71; and a restraint assembly 72 is provided to fix the astronaut to prevent him from leaving the seat.

[0048] like Fig.10 As shown, during normal use, the seat is first flattened according to the above-mentioned operating requirements, and then the astronaut lies on the seat and adjusts the angle of the seat basin assembly 12 in accordance with the above-mentioned operating requirements. Since the seat basin assembly 12 and the leg support assembly 13 rotate synchronously driven by the connecting rod assembly 16, when the seat basin assembly 12 and the backrest assembly 11 are adjusted to 90°, the leg support assembly 13 and the seat basin assembly 12 are also adjusted to 90°.

[0049] like Fig.11 As shown, the back of the seat backrest assembly 11 is provided with four quick release pins 73 for fixing to the spacecraft body structure. After the spacecraft returns to the ground, the ground crew quickly pulls out the four quick release pins 73 on the seat, and the astronaut or ground crew slowly flattens the seat according to the above operation requirements, so that the seat can be used as a stretcher and the ground crew can carry the seat and the astronaut on the seat out of the spacecraft.

[0050] By adopting the above technical solution disclosed in the utility model, the following beneficial effects are obtained:

[0051] The utility model provides a novel astronaut seat. Through the linkage characteristics of the design structure, the astronaut seat can be easily adjusted to a more suitable state, which can protect the safety of the astronauts to the greatest extent. Only one rotation node needs to be adjusted or locked to achieve synchronous adjustment or locking of multiple joints. It has strong stability and convenience, and can meet the various seat posture requirements of astronauts in flight missions.

[0052] The above is only a preferred embodiment of the present invention. It should be pointed out that ordinary technicians in this technical field can make several improvements and modifications without departing from the principle of the present invention. These improvements and modifications should also be considered as the protection scope of the present invention.

Claims

1. A new type of astronaut seat, characterized in that: It includes a backrest assembly, a seat basin assembly, a leg support assembly, a foot support assembly, a headrest assembly, a connecting rod assembly and a handle unlocking assembly; The upper end of the backrest assembly is connected to the headrest assembly, and the lower end is provided with a first rotation node and a second rotation node in sequence from the outside to the inside; The lower end of the leg support assembly is connected to the foot support assembly, and the upper end is provided with a third rotation node and a fourth rotation node in sequence from the outside to the inside; One end of the seat basin assembly is connected to the backrest assembly via the first rotation node, and the other end is connected to the leg support assembly via the fourth rotation node; One end of the connecting rod assembly is connected to the backrest assembly via the second rotation node, and the other end is connected to the leg support assembly via the third rotation node; The handle unlocking assembly is arranged at the second rotation node, and is used for releasing the rotation restriction of the second rotation node.

2. The novel astronaut seat according to claim 1 is characterized in that: The second rotating node includes a node shell, a fixing part, a limiting part, a bearing sleeve and a butterfly shaft; the node shell is connected to the fixing part, and the fixing part is connected to the backrest assembly; the bearing sleeve is fixed on the connecting rod assembly and movably sleeved on the outside of the fixing part so that the connecting rod assembly can rotate around the fixing part; a limiting protrusion surface is provided on the inner side of the bearing sleeve; the butterfly shaft is rotatably arranged inside the fixing part; reserved holes are provided on both sides of the fixing part, and a limiting part is provided in the reserved hole; the raised end of the butterfly shaft is rotated to the limiting part, so that the limiting part can protrude out of the reserved hole, so that the limiting part contacts the limiting protrusion surface to limit the rotation of the connecting rod assembly; the butterfly shaft is connected to the handle unlocking assembly.

3. The new astronaut seat according to claim 2 is characterized in that: The connecting rod assembly includes a left connecting rod and a right connecting rod, and the second rotation nodes are set to two, which are respectively arranged on both sides of the backrest assembly and connected to the left connecting rod or the right connecting rod; the butterfly shafts in the two second rotation nodes are connected through a linkage shaft, and only one of the butterfly shafts is connected to the handle unlocking assembly.

4. The new astronaut seat according to claim 2 is characterized in that: The handle unlocking assembly includes a handle housing, a button, a movable rod, a handle shaft and a handle locking portion, wherein the handle shaft is fixed in the handle housing and connected to the butterfly shaft; the handle locking portion is provided with a movable protrusion, and the node housing is provided with a slot for limiting the movable protrusion, and the rod body of the movable rod presses the movable protrusion into the slot to limit the rotation of the handle unlocking assembly; the outer end of the movable rod is connected to the button, and the inner end rod body is provided with a groove so that the movable protrusion pops out of the slot at the groove.

5. The novel astronaut seat according to claim 1 is characterized in that: The headrest assembly includes a headrest guard plate, a sliding rod and a locking piece. One end of the sliding rod is connected to the headrest guard plate, and the other end passes through the locking piece for limiting. The locking piece is fixedly connected to the backrest assembly.

6. The novel astronaut seat according to claim 1 is characterized in that: A telescopic movable part is provided at the lower end of the leg rest assembly, and the sliding parts on both sides of the telescopic movable part are sleeved in the guard plate of the leg rest assembly. The foot rest assembly is rotatably connected to the lower end of the telescopic movable part, and a plurality of limiting grooves are sequentially provided on the sliding part. The leg rest assembly is provided with a telescopic locking part that cooperates with the limiting groove to limit the position.

7. The novel astronaut seat according to claim 1 is characterized in that: An assist spring is provided at the first rotation node to enable the seat basin assembly to rotate toward the backrest assembly.

8. The novel astronaut seat according to claim 1 is characterized in that: The back of the backrest assembly is provided with a plurality of quick-release pins for limiting and fixing.

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