Foldable seat of manned lunar rover

Abstract

The utility model belongs to the technical field of aviation equipment, and particularly relates to a foldable seat of a manned lunar rover, which comprises a backrest, a seat plate and a telescopic rod, the seat plate is rotatably arranged on the telescopic rod, two ends of the telescopic rod are respectively provided with a rotating mechanism, one end of the telescopic rod is fixed on a rover body of the manned lunar rover, and the other end of the telescopic rod is fixed on the seat plate. The rotating mechanism comprises a fixed part and a rotating part, the fixed part is fixedly arranged at the end part of the telescopic rod, the rotating part is rotationally connected with the telescopic rod, the backrest is fixedly connected with the fixed part, and the seat plate is fixedly connected with the rotating part.

Description

Technical Field

[0001] The utility model belongs to the technical field of aviation equipment, and in particular relates to a foldable seat of a manned lunar rover. Background Art

[0002] Manned lunar exploration is not only a reflection of a country's scientific and technological development level, but also a concrete reflection of its comprehensive national strength. With the rapid development of my country's unmanned lunar exploration technology, manned lunar landing has also been put on the agenda. To achieve lunar surface exploration, transportation of effective scientific payloads and collection of samples as well as long-term residence by astronauts, manned lunar rovers are bound to be an indispensable and important medium and exploration vehicle.

[0003] tools, but due to the complex terrain and many potholes on the lunar surface, it is particularly important to improve the stability of the lunar rover.

[0004] Among them, a four-wheeled manned lunar rover with an adjustable suspension and application number 201910369377.7 includes a left suspension rocker arm, a right suspension rocker arm, a wheel mechanism, a lunar rover chassis, a left spring, a right spring and a telescopic rod; the left suspension rocker arm and the right suspension rocker arm are distributed at the front and rear of the lunar rover chassis; the left suspension rocker arm is hinged to the lunar rover chassis with a first hinge shaft; the right suspension rocker arm is hinged to the lunar rover chassis with a second hinge shaft; the adjacent left suspension rocker arm and right suspension rocker arm are connected by a left spring, a telescopic rod and a right spring.

[0005] The above scheme shortens the wheel spacing by retracting the retractable rod and raises the lunar rover chassis, thereby avoiding obstacles under the chassis; however, the chassis can only be raised to a limited height, and higher obstacles cannot be avoided by raising the chassis. Moreover, after the chassis is raised, the stability of the lunar rover will inevitably be affected. At the same time, since the wheels in this scheme can only move forward and backward, obstacles in the wheel's path cannot be avoided.

[0006] On the other hand, the seats for astronauts on existing lunar rovers are mostly fixed and cannot be folded, which affects the volume of the lunar rover after folding; or a complex folding method is used to fold the seats. This complex folding method not only makes the processing difficult, but also the cost is high. Utility Model Content

[0007] The purpose of the utility model is to provide a foldable seat for a manned lunar rover, which has a simple structure, is easy to fold and has a low manufacturing cost.

[0008] In order to solve the above-mentioned technical problems, the present invention specifically adopts the following technical solutions:

[0009] A foldable seat for a manned lunar rover comprises a backrest, a seat plate and a telescopic rod, wherein the seat plate is rotatably mounted on the telescopic rod, a rotation mechanism is respectively provided at both ends of the telescopic rod, and one end of the telescopic rod is fixed to the body of the manned lunar rover, the rotation mechanism comprises a fixed portion and a rotating portion, the fixed portion is fixedly mounted at the end of the telescopic rod, the rotating portion is rotatably connected to the telescopic rod, the backrest is connected to the fixed portion, and the seat plate is connected to the rotating portion.

[0010] As an improvement, the backrest is made of a flexible material.

[0011] As an improvement, the seat is made of a flexible material.

[0012] As an improvement, the seat includes a first support section for supporting the buttocks and a second support section for supporting the legs, and the angle between the first support section and the second support section is 90°-120°.

[0013] As an improvement, the rotating portion includes a first connecting rod and a second connecting rod, wherein the first connecting rod extends radially along the telescopic rod and is rotatably connected to the telescopic rod. When the first connecting rod rotates around the telescopic rod to a first extreme position, the foldable seat is in a standing support state, with the telescopic rod providing support for the buttocks, while the second support section provides support for the legs. When the first connecting rod rotates around the telescopic rod to a third extreme position, the foldable seat is in a folded state. When the first connecting rod rotates around the telescopic rod to a second extreme position, the foldable seat is in a sitting state, with the first support section providing support for the buttocks.

[0014] As an improvement, when the first connecting rod is located at the first extreme position, the first connecting rod is parallel to the vertical direction, the second connecting rod extends in a direction away from the telescopic rod, and the angle between the projection of the second connecting rod and the first connecting rod on the vertical plane is an obtuse angle.

[0015] As an improvement, when the first connecting rod is in the first extreme position, the acute angle between the first connecting rod and the vertical direction is 30°-60°, the second connecting rod is parallel to the vertical direction, and the angle between the second connecting rod and the projection of the first connecting rod on the vertical plane is an obtuse angle.

[0016] As an improvement, when the first connecting rod is located at the second extreme position, the acute angle between the first connecting rod and the horizontal direction is 30°-60°.

[0017] As an improvement, the foldable seat further includes a locking mechanism for locking the first connecting rod in the first extreme position, the second extreme position, or the third extreme position, wherein the locking mechanism includes a pawl disposed in the fixing portion and a ratchet disposed at the end of the telescopic rod.

[0018] The principle and beneficial effects of the present invention are as follows: The lunar rover in the present application is provided with a folding seat, and by adjusting the angle of the seat board, the seat can have two states: standing and sitting. When it is in the standing state, its backrest can support the backpack of the staff (such as astronauts), and the seat can also be used as an armrest; when the seat is in the sitting state, the staff (such as astronauts) can sit on the seat board, and the backpack is supported by the backrest, and the pedals, seat and rocker arm can all be folded or retracted, so that the lunar rover can be folded and stored. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following is a brief introduction to the drawings required for the embodiments or the description of the prior art. In all drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the various elements or parts are not necessarily drawn according to the actual scale. Obviously, the drawings described below are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can also be obtained based on these drawings without inventive work.

[0020] Figure 1 A perspective view of the overall structure of a lunar rover according to an exemplary embodiment of the present invention;

[0021] Figure 2a and Figure 2b Schematic diagrams of the bottom structure of the lunar rover in an exemplary embodiment of the present invention, respectively, in the extended state and the retracted state of the rocker arm;

[0022] Figure 3 They are schematic diagrams of the lunar rover in the stowed state according to an exemplary embodiment of the present invention;

[0023] Figure 4a and Figure 4b They are respectively a schematic diagram of the overall structure of an adjustable suspension and an exploded model diagram of an exemplary embodiment of the present utility model;

[0024] Figure 5a 、 Figure 5b and Figure 5c A schematic diagram of a partially enlarged structure of the first rotational joint, the second rotational joint, and the third rotational joint of an exemplary embodiment of the present utility model;

[0025] Figure 6a 、 Figure 6b and Figure 6c They are the overall structural perspective view, side view and exploded view of the seat;

[0026] Figure 7a 、 Figure 7b and Figure 7c They are schematic diagrams of the adjustable suspension in different states;

[0027] Figure 8 is an exploded view of the third rotational joint in another embodiment;

[0028] Figure 9 Schematic diagram of the ratchet and pawl mechanism provided in the rotating part.

[0029] Markings in the figure: 1. chassis; 2. rocker arm; 21. first rotating joint; 211. first rotating shaft; 212. second rotating shaft; 213. reinforced connecting seat; 22. second rotating joint; 221. first connecting member; 222. second connecting member; 223. third rotating shaft; 224. fourth rotating shaft; 23. third rotating joint; 232. third connecting member; 233. sixth rotating shaft; 234. seventh rotating shaft; 235. fifth rotating shaft; 236. shock-absorbing spring; 3. pedal; 4. operating cabin; 5. seat; 51. backrest; 52. seat plate; 521. first supporting section; 522. second supporting section; 53. telescopic rod; 54. fixing part; 55. rotating part; 551. first connecting rod; 552. second connecting rod; 6. tool compartment; 7. wheel; 8. handle; 9. protective shell; 101. pawl, 102. ratchet. DETAILED DESCRIPTION

[0030] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0031] Herein, the suffixes such as "module", "component" or "unit" used to represent elements are only used to facilitate the description of the present invention and have no specific meaning. Therefore, "module", "component" or "unit" can be used interchangeably.

[0032] As used herein, terms such as "upper," "lower," "inner," "outer," "front," "back," "one end," and "the other end" indicate positions or locations based on those shown in the accompanying drawings. These terms are intended solely to facilitate the description of the present invention and simplify the description. They are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0033] As used herein, unless otherwise expressly specified or limited, the terms "installed," "provided with," "connected," etc., should be understood broadly. For example, "connected" may refer to a fixed connection, a detachable connection, or an integral connection; it may refer to a mechanical connection, a direct connection, an indirect connection through an intermediate medium, or internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model on a case-by-case basis.

[0034] As used herein, "and / or" includes any and all combinations of one or more of the associated listed items.

[0035] Herein, "plurality" means two or more than two, ie, it includes two, three, four, five, etc.

[0036] The embodiment is basically as shown in the attached Figures 1-8 As shown:

[0037] like Figure 1 As shown, the utility model provides a manned lunar rover for use in complex road conditions, including an adjustable suspension, which includes a chassis 1, four rocker arms 2 evenly distributed at the four corners of the chassis 1, and four wheels 7 connected to the chassis 1 through the rocker arms 2; an operating cabin 4 is fixed at the center position above the chassis 1, and a tool compartment 6 for accommodating tools is provided inside the operating cabin 4, and a door is provided on the tool compartment 6, pedals 3 are installed on both sides of the chassis 1, and the two pedals 3 are symmetrical about the operating cabin 4, and one side of the pedal 3 is hinged to the chassis 1 through a hinge seat; a folding seat 5 is fixed on both sides of the operating cabin 4, and the two seats 5 are symmetrical about the operating cabin 4.

[0038] In some embodiments, the upper surface of the operating cabin 4 is provided with operating buttons for controlling the forward movement or steering of the lunar rover, etc. The operating cabin 4 has built-in environmental perception modules such as radar and camera. At the same time, a main control board is provided in the operating cabin 4, and the operating buttons are electrically connected to the main control board. The main control board's obstacle avoidance algorithm can control the rotation of the four rocker arms 2 (specifically, by controlling the driving mechanism of each rotating shaft in the rotating joint, such as a reduction motor, to achieve rotation with multiple degrees of freedom, and during the rotation of the rocker arm 2, the four wheels 7 are always located on the same plane), thereby achieving obstacle avoidance.

[0039] Figure 4- Figure 5c The rocker arm 2 includes a first rotating joint 21, a second rotating joint 22 and a third rotating joint 23. Through the mutual cooperation of the three rotating joints, the distance between the wheels 7 and / or the height of the chassis 1 can be changed, thereby achieving obstacle avoidance of different obstacles on complex road conditions. Furthermore, in order to protect the rotating structure of the rocker arm 2, a protective shell 9 is provided on the outside of the first rotating joint 21, the second rotating joint 22 and the third rotating joint 23.

[0040] Specifically, see Figure 5a The first rotating joint 21 includes a first rotating shaft 211 and a second rotating shaft 212, wherein the first end of the first rotating shaft 211 is rotatably connected to the transmission mechanism on the chassis, so that the first rotating joint 21 can rotate around a first direction (i.e., the axial extension direction of the first rotating shaft in the figure) under the drive of the driving mechanism; the second end of the first rotating shaft 211 is fixedly provided with the second rotating shaft 212 through a reinforced connecting seat 213. Due to the low gravity on the moon, the lunar rover in this application adopts a lightweight design, so the diameters of the first rotating shaft 211 and the second rotating shaft 212 are set to be smaller to reduce their weight, and a reinforced connecting seat 213 is provided to provide possible support. Preferably, the reinforced connecting seat adopts a spherical structure, and its diameter is set to be larger than the diameter of the first rotating shaft 211 and the second rotating shaft 212, and the second end of the first rotating shaft is fixed on the reinforced connecting seat 213, while the second rotating shaft 212 is fixed on the reinforced connecting seat 213, and the first rotating shaft 211 and the second rotating shaft 212 remain vertical. Specifically, the first rotating shaft 211 and the second rotating shaft 212 can be fixed to the reinforced connecting seat 213 by welding, so that the first rotating shaft 211 and the second rotating shaft 212 can be tightly connected. Of course, the first rotating shaft and the second rotating shaft are both provided with corresponding driving mechanisms. For example, a reduction motor is provided in the second rotating shaft, and the output shaft of the reduction motor is connected to the first end of the first connecting member, so that under the drive of the reduction motor, the first connecting member rotates around the second rotating shaft. Of course, the driving method of other rotating shafts or joints can also adopt the same driving method, which will not be repeated here.

[0041] The second rotation joint 22 includes a first connecting member 221 and a second connecting member 222, and a third rotating shaft 223 and a fourth rotating shaft 224 vertically connected, wherein the first end of the first connecting member 221 is rotationally connected to the second rotating shaft 212 (for example, connected to the output shaft of the reduction motor in the second rotating shaft), the second end of the first connecting member 221 is rotationally connected to the third rotating shaft 223, the first end of the second connecting member 222 is rotationally connected to the fourth rotating shaft 224, and the second end of the second connecting member 222 is rotationally connected to the third rotation joint 23.

[0042] In some embodiments, see Figure 5cThe third rotation joint 23 includes a fifth rotating shaft 235 arranged at the second end of the second connecting member 222, and a third connecting member 232 whose first end is rotatably connected to the fifth rotating shaft 235, the fifth rotating shaft 235 is parallel to the axial direction of the second connecting member 222, and the second end of the third connecting member 232 is rotatably connected to the wheel 7.

[0043] In other embodiments, Figure 8 As shown in the figure, the third rotation joint 23 includes a sixth rotation shaft 233 and a seventh rotation shaft 234 that are vertically connected. The second end of the second connecting member 222 is rotationally connected to the sixth rotation shaft 233, and the seventh rotation shaft 234 is rotationally connected to the wheel 7 through the third connecting member 232. When the third connecting member is driven to rotate about the seventh rotation shaft 234 by the driving mechanism, the third connecting member 232 drives the wheel to rotate about the seventh rotation shaft 234.

[0044] In some embodiments, a shock-absorbing spring 236 is mounted on the third connecting member 232 to reduce vibration of the lunar rover.

[0045] In some embodiments, the first rotating shaft and the second rotating shaft may also be connected using the same structure as the third rotating shaft 223 and the fourth rotating shaft 224 .

[0046] In the initial state, if Figure 7a , with the direction of the line connecting the central axes of the two front wheels (or the two rear wheels) as the X-axis, the direction of the line connecting the central axes of the front and rear wheels on the same side as the Y-axis, and the direction perpendicular to the plane where the X-axis and Y-axis are located as the Z-axis; the first rotation joint 21 can rotate around the X-axis direction through the first rotation shaft 211 parallel to the X-axis, so that the entire rocker arm rotates around the X-axis direction; the first connecting member 221 is driven to rotate around the Z-axis direction by the driving mechanism on the second rotation shaft; the second connecting member 222 is driven to rotate around the Z-axis direction by the driving mechanism on the fourth rotation shaft; and the third rotation joint 23 and the wheel 7 can rotate around the Y-axis direction.

[0047] Specifically, see Figure 7b When the driving mechanism drives the first rotating shaft 211 to rotate, the second rotating shaft 212 fixed thereto drives the second rotating joint 22, the third rotating joint 23, and the wheel 7 to rotate around the first rotating shaft 211; when the driving mechanism drives the first connecting member to rotate around the second rotating shaft 212, the first connecting member 221 drives the second connecting member 222, the third rotating joint 23, and the wheel 7 to rotate around the second rotating shaft 212; when the driving mechanism drives the second connecting member 222 to rotate around the fourth rotating shaft 224, the second connecting member 222 drives the third rotating joint 23 and the wheel 7 to rotate around the first connecting member 221; when the third rotating joint 23 rotates relative to the second connecting member 222, the third rotating joint 23 drives the wheel 7 to rotate around the second connecting member 222. Of course, in this embodiment, each rotating joint can rotate independently, or multiple rotating joints can rotate simultaneously.

[0048] like Figure 7a and Figure 2b When the first connecting member 221 and the second connecting member 222 are parallel to the length direction of the chassis 1, the rocker arm 2 is in a retracted state, and the distance between the two front wheels (or the two rear wheels) is the smallest, that is, H2 in the figure; Figure 7b and Figure 2a When the first rotation joint 21 rotates toward the sides of the chassis 1, that is, the first connecting member rotates around the second rotation axis, and / or the second connecting member 222 rotates toward the sides of the chassis 1 relative to the first connecting member 221 (that is, the second connecting member 222 rotates around the fourth rotation axis), the distance between the two front wheels (or the two rear wheels) increases to H1 (> H2). In this way, the wheelbase between the wheels 7 can be increased without changing the height of the chassis 1, thereby improving the stability and anti-roll capability of the lunar rover. Figure 7c When there are uneven surfaces or high but narrow obstacles on the forward path, the first rotating shaft 211 can be rotated to extend the entire rocker arm in the vertical direction, thereby achieving adjustment of the height of the chassis 1; further, the angle between the first connecting member 221 and the second connecting member 222 can be changed. When the first connecting member 221 and the second connecting member 222 are located on the same axis and in the vertical direction (i.e., the Z-axis direction), the chassis 1 reaches its maximum height, thereby avoiding obstacles at the bottom of the chassis 1.

[0049] In summary, the rocker arm 2 in the present application can achieve more degrees of freedom of adjustment through the mutual cooperation of three rotating joints and the separate adjustment of the three, so that the distance between the wheels 7 and the height of the chassis 1 of the lunar rover can be adjusted separately, making the lunar rover more flexible and able to adapt to more complex road conditions.

[0050] It should be noted that the rotational connections between the first rotational joint 21 and the chassis 1, between the first rotational joint 21 and the second rotational joint 22, between the first connecting member 221 and the second connecting member 222, and between the second rotational joint 22 and the third rotational joint 23 are all driven by electrically controlled rotating parts (such as reduction motors, etc.), and staff (such as astronauts) can operate them through operating buttons to achieve changes in the position and direction of the wheel 7.

[0051] In some embodiments, as Figures 6a-6cAs shown, the folding seat 5 includes a backrest 51, a seat plate 52 and a telescopic rod 53. The backrest 51 and the seat plate 52 are respectively rotatably arranged on the telescopic rod 53. Of course, the backrest 51 can also be fixed on the telescopic rod 53, and the width of the backrest 51 and the seat plate 52 is less than the length of the telescopic rod 53. At the same time, the connection part between the backrest 51 and the fixed part 54, as well as the connection part between the seat plate 52 and the rotating part 55 are made of flexible material (such as deformable material such as nylon cloth), so that when the telescopic rod 53 is contracted, the flexible material of the connection part is compressed, and the backrest 51 and the seat plate 55 are deformed. 2 can be moved closer to the operating cabin 4, thereby realizing the storage of the entire folding seat 5; a rotating mechanism is respectively provided at both ends of the telescopic rod 53, and one end of the telescopic rod 53 is fixed to the operating cabin 4. The rotating mechanism includes a fixed portion 54 and a rotating portion 55. The fixed portion 54 is fixedly provided on the telescopic rod 53, and the rotating portion 55 is rotatably connected to the telescopic rod 53. The backrest 51 is fixedly connected to the fixed portion 54, and the seat plate 52 is fixedly connected to the rotating portion 55, so that the rotating portion 55 can drive the seat plate 52 to rotate around the telescopic rod 53, thereby realizing the adjustment of the angle of the seat plate 52.

[0052] In some embodiments, the seat plate 52 includes a first support section 521 for supporting the buttocks and a second support section 522 for supporting the legs, and the angle between the first support section 521 and the second support section 522 is 90°-120°; accordingly, the rotating portion 55 includes a first connecting rod 551 and a second connecting rod 552 extending radially along the telescopic rod 53 and rotatably connected to the telescopic rod 53, and the angle between the second connecting rod 552 and the projection of the first connecting rod 551 on the vertical plane is an obtuse angle (specifically, it can be consistent with the angle between the first support section 521 and the second support section 522); wherein, when the first connecting rod 551 rotates around the telescopic rod 53 to When in the first extreme position, the foldable seat 5 is in a standing support state, and the telescopic rod 53 provides support for the buttocks. At the same time, the second support section 522 provides support for the legs, and the backrest 51 supports the backpack of the staff (such as astronauts); when the first connecting rod 551 rotates around the telescopic rod 53 to the second extreme position, the foldable seat 5 is in a sitting state, and the first support section 521 provides support for the buttocks, and the backrest 51 supports the backpack of the staff (such as astronauts); when the first connecting rod 551 rotates around the telescopic rod 53 along the second direction to the third extreme position, the foldable seat 5 is in a folded state, which is convenient for storage.

[0053] When the first connecting rod 551 is located at the first extreme position, the first connecting rod 551 is located in the vertical direction and below the telescopic rod 53; when the first connecting rod 551 is located at the second extreme position, the acute angle between the first connecting rod 551 and the horizontal direction is 30°-60°; when the first connecting rod 551 is located at the third extreme position, the first connecting rod 551 is located in the vertical direction and above the telescopic rod 53.

[0054] See also Figure 1 When the first connecting rod is in the first extreme position, the acute angle between the first connecting rod and the vertical direction is 30°-60°, the second connecting rod is parallel to the vertical direction, and the angle between the projection of the second connecting rod and the first connecting rod on the vertical plane is an obtuse angle (120°-160°).

[0055] See also Figure 6b When the first connecting rod is at the first extreme position, the first connecting rod is parallel to the vertical direction, the second connecting rod extends in a direction away from the telescopic rod, and the angle between the second connecting rod and the projection of the first connecting rod on the vertical plane is an obtuse angle.

[0056] In some embodiments, the seat 5 further includes a locking mechanism for locking the first link 551 at the first extreme position, the second extreme position, or the third extreme position (or a self-locking mechanism capable of self-locking at any position). The locking mechanism can adopt an existing mechanism and will not be described in detail here. For example, see Figure 9 The locking mechanism includes a pawl 101 and a ratchet 102 coaxially arranged with the telescopic rod, wherein the free end of the pawl 101 is provided with a guide surface corresponding to one side of the ratchet teeth on the ratchet 102, which allows the ratchet teeth to transition smoothly; when the ratchet 102 is driven to rotate to any angle under the action of an external force, when the external force is removed, the free end of the pawl 101 is stuck between the two ratchet teeth, thereby achieving self-locking; when reverse rotation or unlocking is required, the other end of the pawl 101 is pressed to rotate the pawl 101, so that the free end of the pawl is withdrawn from between the two ratchet teeth to unlock and achieve rotation at any angle.

[0057] By providing a seat plate 52 with an adjustable angle, the folding seat 5 can have different states, thereby providing support in different states for staff (such as astronauts), thereby improving the comfort of use of the lunar rover; at the same time, by adjusting the length of the telescopic rod 53, the backrest 51, the seat plate 52 and the rotating mechanism can be driven closer to the operating cabin 4, thereby realizing the storage of the folding seat 5.

[0058] In some embodiments, two handles 8 are installed on the side of the pedal 3 away from the hinge seat to facilitate staff (such as astronauts) to rotate the pedal 3 upward to make it fit the side of the operating cabin 4 for storage.

[0059] In addition, if Figure 3 By adjusting the positions between the various rotating joints of the rocker arm 2, the four wheels 7 can be stored on both sides of the operating cabin 4. At the same time, the pedals 3 and the folding seat 5 can be limited by the wheels 7 to prevent them from falling, ultimately realizing the overall storage of the lunar rover.

[0060] In summary, this application comprehensively provides a manned lunar rover that is easy to store, has more degrees of freedom, and is more stable and suitable for complex terrain.

[0061] It should be noted that, in this document, the terms "comprises," "includes," or any other variations thereof are intended to encompass non-exclusive inclusion, such that a process, method, article, or apparatus comprising a series of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of other identical elements in the process, method, article, or apparatus comprising the element.

[0062] The embodiments of the present invention are described above in conjunction with the accompanying drawings, but the present invention is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of the present invention, ordinary technicians in this field can also make many forms without departing from the scope of protection of the purpose of the present invention and the claims, which are all within the protection of the present invention.

Claims

1. A foldable seat for a manned lunar rover, characterized in that: The folding seat includes a backrest, a seat plate and a telescopic rod, the backrest and the seat plate are rotatably arranged on the telescopic rod, and the width of the backrest and the seat plate is smaller than the length of the telescopic rod; a rotation mechanism is respectively provided at both ends of the telescopic rod and one end of the telescopic rod is fixed to the body of the manned lunar rover, the rotation mechanism includes a fixed part and a rotating part, the fixed part is fixedly provided at the end of the telescopic rod, the rotating part is rotatably connected to the telescopic rod, the backrest is connected to the fixed part, and the seat plate is connected to the rotating part; the seat plate includes a first support section for supporting the buttocks and a second support section for supporting the legs; and the angle between the first support section and the second support section is 90°-120°; The rotating portion includes a first connecting rod and a second connecting rod, wherein the first connecting rod extends radially along the telescopic rod and is rotatably connected to the telescopic rod; When the first link rotates about the telescopic rod to a first extreme position, the foldable seat is in a standing support state, with the telescopic rod providing support for the buttocks, while the second support segment provides support for the legs. Furthermore, the first link is parallel to the vertical direction, the second link extends away from the telescopic rod, and the included angle between the projections of the second link and the first link on a vertical plane is an obtuse angle, with the obtuse angle being between 90° and 120°. When the first connecting rod rotates around the telescopic rod to a third extreme position, the foldable seat is in a folded state.

2. The foldable seat for a manned lunar rover according to claim 1, characterized in that: When the first connecting rod rotates around the telescopic rod to a second extreme position, the foldable seat is in a sitting position, and the first supporting section provides support for the buttocks.

3. The foldable seat for a manned lunar rover according to claim 1, characterized in that: The backrest is made of flexible material.

4. The foldable seat for a manned lunar rover according to claim 1, characterized in that: The seat plate is made of flexible material.

5. The foldable seat for a manned lunar rover according to claim 1, characterized in that: When the first connecting rod is at the first extreme position, the acute angle between the first connecting rod and the vertical direction is 30°-60°, the second connecting rod is parallel to the vertical direction, and the angle between the second connecting rod and the projection of the first connecting rod on the vertical plane is an obtuse angle.

6. The foldable seat for a manned lunar rover according to claim 1, characterized in that: When the first connecting rod is located at the second extreme position, the acute angle between the first connecting rod and the horizontal direction is 30°-60°.

7. The foldable seat for a manned lunar rover according to claim 2, characterized in that: The invention also includes a locking mechanism for locking the first connecting rod in the first extreme position, the second extreme position, or the third extreme position.

8. The foldable seat for a manned lunar rover according to claim 7, characterized in that: The locking mechanism includes a pawl arranged in the fixing portion and a ratchet arranged at the end of the telescopic rod, wherein a guide surface for allowing a smooth transition of the ratchet teeth is provided on a side of the free end of the pawl corresponding to the ratchet teeth on the ratchet wheel; When the ratchet is driven to rotate to any angle under the action of an external force, when the external force is removed, the free end of the pawl is stuck between the two ratchet teeth, thereby achieving self-locking; when it is necessary to rotate in the opposite direction or unlock, press the other end of the pawl to make the pawl rotate, so that the free end of the pawl withdraws from between the two ratchet teeth to achieve unlocking.

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