CN112141344A - Crash-resistant seat with adjustable backrest angle - Google Patents
Crash-resistant seat with adjustable backrest angle Download PDFInfo
- Publication number
- CN112141344A CN112141344A CN202011098527.4A CN202011098527A CN112141344A CN 112141344 A CN112141344 A CN 112141344A CN 202011098527 A CN202011098527 A CN 202011098527A CN 112141344 A CN112141344 A CN 112141344A
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- seat
- backrest
- sides
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- 238000010521 absorption reaction Methods 0.000 claims abstract description 21
- 229910000831 Steel Inorganic materials 0.000 claims description 13
- 239000010959 steel Substances 0.000 claims description 13
- 238000013016 damping Methods 0.000 claims description 12
- 239000004677 Nylon Substances 0.000 claims description 7
- 229920001778 nylon Polymers 0.000 claims description 7
- 239000006096 absorbing agent Substances 0.000 claims description 5
- 238000009434 installation Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64D—EQUIPMENT FOR FITTING IN OR TO AIRCRAFT; FLIGHT SUITS; PARACHUTES; ARRANGEMENT OR MOUNTING OF POWER PLANTS OR PROPULSION TRANSMISSIONS IN AIRCRAFT
- B64D11/00—Passenger or crew accommodation; Flight-deck installations not otherwise provided for
- B64D11/06—Arrangements of seats, or adaptations or details specially adapted for aircraft seats
- B64D11/0619—Arrangements of seats, or adaptations or details specially adapted for aircraft seats with energy absorbing means specially adapted for mitigating impact loads for passenger seats, e.g. at a crash
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64D—EQUIPMENT FOR FITTING IN OR TO AIRCRAFT; FLIGHT SUITS; PARACHUTES; ARRANGEMENT OR MOUNTING OF POWER PLANTS OR PROPULSION TRANSMISSIONS IN AIRCRAFT
- B64D11/00—Passenger or crew accommodation; Flight-deck installations not otherwise provided for
- B64D11/06—Arrangements of seats, or adaptations or details specially adapted for aircraft seats
- B64D11/0639—Arrangements of seats, or adaptations or details specially adapted for aircraft seats with features for adjustment or converting of seats
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64D—EQUIPMENT FOR FITTING IN OR TO AIRCRAFT; FLIGHT SUITS; PARACHUTES; ARRANGEMENT OR MOUNTING OF POWER PLANTS OR PROPULSION TRANSMISSIONS IN AIRCRAFT
- B64D25/00—Emergency apparatus or devices, not otherwise provided for
- B64D25/02—Supports or holding means for living bodies
- B64D25/04—Seat modifications
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- Engineering & Computer Science (AREA)
- Aviation & Aerospace Engineering (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Chairs Characterized By Structure (AREA)
- Seats For Vehicles (AREA)
Abstract
The invention discloses an anti-crash seat with an adjustable backrest angle, which comprises a chair leg frame, a seat plate frame, a backrest frame, an energy absorption device, a telescopic rod assembly and an adjusting assembly, wherein the backrest frame is provided with a backrest seat; the upper part and the lower part of the chair leg frame are respectively matched with an upper sliding shaft and a lower sliding part in a vertical sliding manner, the vertical direction and two ends of the energy absorption device are respectively connected with the structural part and the lower sliding part of the chair leg frame, the structural part of the chair leg frame is connected with a spring, the vertical direction and the lower end of the spring are connected with the lower sliding part, the chair plate frame is connected and fixed on the upper sliding shaft and the lower sliding part, the backrest frame is connected with the upper sliding shaft in a swinging manner through mounting holes on two sides, the telescopic rod assembly is positioned on the back of the chair plate frame, one end of the telescopic rod assembly is hinged with the structural part of the chair plate frame, the other end of the telescopic rod assembly is; the telescopic rod component is locked under a normal state, and the telescopic rod component is unlocked and can stretch and retract and reset when the adjusting component is operated. The invention can resist crash and adjust the angle of the backrest, and is convenient to operate.
Description
Technical Field
The invention belongs to equipment in the field of aviation, and particularly relates to an anti-crash seat with an adjustable backrest angle.
Background
Because of the characteristics of flexibility, low-speed and low-altitude flight and small-field take-off and landing of the helicopter, the emergency landing and crash situations are the most, and the helicopter seat is required to have corresponding crash resistance. At present, the backrest angle of most anti-crash seats is not adjustable.
Disclosure of Invention
The invention aims to provide a crash-resistant seat with an adjustable backrest angle, which can resist crash and adjust the backrest angle and is convenient to operate.
The technical scheme adopted by the invention is as follows:
an anti-crash seat with an adjustable backrest angle comprises a seat leg frame, a seat frame, a backrest frame, an energy absorption device, a telescopic rod assembly and an adjusting assembly; the upper part and the lower part of the chair leg frame are respectively matched with an upper sliding shaft and a lower sliding part in a vertical sliding manner, the vertical direction and two ends of the energy absorption device are respectively connected with the structural part and the lower sliding part of the chair leg frame, the structural part of the chair leg frame is connected with a spring, the vertical direction and the lower end of the spring are connected with the lower sliding part, the chair plate frame is connected and fixed on the upper sliding shaft and the lower sliding part, the backrest frame is connected with the upper sliding shaft in a swinging manner through mounting holes on two sides, the telescopic rod assembly is positioned on the back of the chair plate frame, one end of the telescopic rod assembly is hinged with the structural part of the chair plate frame, the other end of the telescopic rod assembly is; the telescopic rod component is locked under a normal state, and the telescopic rod component is unlocked and can stretch and retract and reset when the adjusting component is operated.
Furthermore, the telescopic rod assembly comprises a locking shaft, a connecting shaft and a locking barrel, one end of the locking shaft and one end of the connecting shaft are respectively hinged with the structural part of the seat plate frame and the position, lower than the mounting hole, on the backrest frame, the locking barrel is internally provided with a locking block and a locking spring, a steel ball is clamped in an open slot of the shell, the outer part of the shell is connected with a linkage block in a swinging manner, the steel ball is radially clamped between the locking block and the linkage block, the other end of the locking shaft extends into one side of the locking barrel and simultaneously penetrates through the locking barrel and the locking block, the other end of the connecting shaft is fixedly connected with the other side of the locking barrel, the locking shaft is sleeved with a reset spring, and the reset spring; the adjusting assembly comprises a handle which is arranged on the side part of the seat frame in a swinging manner, a rocker arm connected with the handle, a support fixedly arranged on the seat frame and a pull rope, the pull rope and the telescopic rod assembly correspond to each other one by one, one end of the pull rope penetrates through the support and is connected with the rocker arm, and the other end of the pull rope is connected with the linkage block; under the normal state, the locking spring enables the damping surface of the inner wall of the locking block to be tightly pressed on the locking shaft, and meanwhile, the locking block pushes the steel ball and the linkage block outwards; during unlocking, the handle is operated to drive the steel ball inwards through the handle, the rocker arm, the pull rope and the linkage block in sequence, so that the damping surface of the inner wall of the locking block leaves the locking shaft.
Furthermore, the chair leg frame comprises chair legs positioned on two sides, and an upper cross bar and a lower cross bar which are used for connecting and fixing the chair legs on the two sides, an upper sliding shaft is sleeved on the upper parts of the chair legs on the two sides in a sliding fit mode respectively, two ends of a lower sliding piece are in sliding fit with vertical grooves in the lower parts of the chair legs on the two sides respectively, the energy absorption device is positioned in the middle of the chair leg frame, two ends of the energy absorption device are connected with the upper cross bar and the lower sliding piece respectively, and springs are positioned on two sides of the energy absorption device.
Furthermore, the energy absorption device is connected with the lower sliding piece through a height adjusting rod and a locking pin, the height adjusting rod is vertical and penetrates through the lower sliding piece, locking holes are formed in the lower sliding piece, locking holes are distributed in the height adjusting rod along the line, and the locking pin penetrates through the locking holes in the lower sliding piece and then is used for achieving height adjustment through different locking holes in the height adjusting rod.
Furthermore, the seat board frame comprises support boards positioned on two sides, a front rod and a rear rod which connect the support boards on the two sides, and a seat board which is laid and fixed on the support boards, the front rod and the rear rod, wherein the upper part and the lower part of the rear ends of the support boards on the two sides are respectively connected and fixed on the upper sliding shaft and the lower sliding part, the adjusting component is arranged on the support board on one side, and one end of the telescopic rod component is hinged with the rear rod.
Furthermore, the backrest frame comprises backrest rods positioned on two sides, connecting rods for connecting the upper parts of the backrest rods on the two sides, and backrest plates paved and fixed on the backrest rods and the connecting rods, and the mounting holes are positioned on the backrest rods on the two sides and connected with the upper sliding shaft through damping bushes.
Furthermore, the seat plate frame is sleeved on the lower sliding piece in a matching manner through lower positioning holes on two sides, and the bolts penetrate through the lower positioning holes and the lower sliding piece and are compressed and fixed through nuts; the seat plate frame is sleeved on the upper sliding shaft in a matching mode through the upper positioning holes on the two sides, and the bolt penetrates through the upper positioning holes and the upper sliding shaft and is tightly pressed and fixed through the threaded sleeve.
Furthermore, the upper sliding shaft is provided with a nylon gasket and a check ring which are used for axially limiting the mounting hole, and the nylon gasket can increase the swinging friction force of the backrest frame.
Furthermore, the energy absorption device adopts a reverse pull tube type energy absorber.
Furthermore, the adjusting angle of the backrest frame is 95-115 degrees.
The invention has the beneficial effects that:
when the seat is impacted by falling and collision, and the load borne by the energy absorption device reaches a certain value, the energy absorption device is driven by the lower sliding piece to stretch so as to absorb energy, the lower sliding piece drives the seat plate frame to move in the height direction, the seat plate frame drives the backrest frame to be linked together in the height direction through the upper sliding shaft, and the spring can absorb energy and provide restoring force for the seat plate frame; the angle of the backrest is changed through the expansion of the telescopic rod component, and the operation is performed through the adjusting component, so that the operation is convenient, and the riding comfort is improved; the seat can be widely applied to environments such as plateau, land, ocean and the like.
Drawings
Fig. 1 is a schematic view of an anti-crash seat with an adjustable backrest angle in an embodiment of the invention.
Fig. 2 is a schematic view of a crash resistant seat with adjustable backrest angle in an embodiment of the invention, with the seat belt, seat cushion and seat pan removed.
Figure 3 is a schematic view of a chair leg rest in an embodiment of the present invention.
Fig. 4 is a schematic view of a seat pan frame in an embodiment of the present invention.
Fig. 5 is a schematic view of a seat pan carrier with the seat pan removed in an embodiment of the present invention.
Fig. 6 is a schematic view of a back rest frame in an embodiment of the present invention.
Fig. 7 is a schematic view showing the installation of the leg frame, seat frame and back frame of the embodiment of the present invention.
Fig. 8 is a cross-sectional view taken at a-a in fig. 7.
Fig. 9 is a sectional view at B-B in fig. 7.
FIG. 10 is a schematic view of a telescopic pole assembly and an adjustment assembly in an embodiment of the invention.
Fig. 11 is a cross-sectional view of a telescopic rod assembly in an embodiment of the invention.
Fig. 12 is a schematic view of the installation of the telescopic rod assembly in an embodiment of the present invention.
In the figure:
1-chair leg frame; 11-chair legs; 11 a-vertical grooves; 12-upper cross bar; 12 a-a connector; 13-lower cross bar; 14-an upper sliding shaft; 14 a-nylon gasket; 14 b-a retaining ring; 14 c-bolt; 14 d-thread insert; 15-lower sliding piece; 15 a-a nut; 15 b-bolt; 16-a spring; 17-height adjusting rod; 18-a locking pin;
2-seat plate frame; 21-a support plate; 21 a-upper positioning hole; 21 b-lower positioning holes; 22-a front bar; 23-rear rod; 23 a-double ear; 24-a seat plate;
3-a backrest frame; 31-a back rest bar; 31 a-mounting holes; 31 b-damping bush; 31 c-hinge hole; 32-a connecting rod; 33-back board; 34-a mounting seat;
4-a telescopic rod assembly; 41-locking the shaft; 42-a connecting shaft; 43-a locking cylinder; 44-a locking block; 44 a-a damping surface; 45-a locking spring; 46-steel ball; 47-a linkage block; 48-a return spring;
5-a regulating component; 51-a handle; 52-a rocker arm; 53-support; 54-a pull cord;
6-an energy absorbing device; 6 a-self-locking nut; 6 b-hexagonal bolt;
7-a safety belt; 8-seat cushion; 9-a headrest; 10-ground slide rail.
Detailed Description
The invention is further described below with reference to the figures and examples.
As shown in fig. 1 to 12, an anti-crash seat with an adjustable backrest angle comprises a seat leg frame 1, a seat plate frame 2, a backrest frame 3, an energy absorption device 6, a telescopic rod assembly 4 and an adjusting assembly 5; the upper part and the lower part of the chair leg frame 1 are respectively vertically matched with an upper sliding shaft 14 and a lower sliding piece 15 in a sliding manner, the energy absorption device 6 is vertically connected with the structure part of the chair leg frame 1 and the lower sliding piece 15 at two ends, the structure part of the chair leg frame 1 is connected with a spring 16, the spring 16 is vertically connected with the lower sliding piece 15 at the lower end, the chair plate frame 2 is fixedly connected with the upper sliding shaft 14 and the lower sliding piece 15, the back rest frame 3 is connected with the upper sliding shaft 14 in a swinging manner through mounting holes 31a at two sides, the telescopic rod assembly 4 is positioned at the back of the chair plate frame 2, one end of the telescopic rod assembly is hinged with the structure part of the chair plate frame 2, the other end of the telescopic rod assembly is hinged with a hinge hole 31c which is lower than the mounting hole and; the telescopic rod component 4 is locked under a normal state, and the telescopic rod component 4 is unlocked and can stretch and retract and reset when the adjusting component 5 is operated. When the seat is impacted by falling and collision, and the load borne by the energy absorption device 6 reaches a certain value, the energy absorption device 6 is driven by the lower sliding piece 15 to stretch so as to absorb energy, the lower sliding piece 15 drives the seat frame 2 to move in the height direction, the seat frame 2 drives the backrest frame 3 to be linked together in the height direction through the upper sliding shaft 14, and the spring 16 can absorb energy and provide restoring force for the seat frame 2; the angle of the backrest is changed by the expansion of the telescopic rod component 4, and the operation is carried out by the adjusting component 5, so that the operation is convenient, and the riding comfort can be improved; the seat can be widely applied to environments such as plateau, land, ocean and the like.
As shown in fig. 1 and 2, in the present embodiment, the leg frame 1 is installed on the ground rail 10, the seat plate frame 2 and the backrest frame 3 are connected with the safety belt 7, the top of the backrest frame 3 is connected with the headrest 9, and the seat cushion 8 is laid on the seat plate frame 2 and the backrest frame 3.
As shown in fig. 3, in the present embodiment, the leg frame 1 includes legs 11 located at two sides, and an upper crossbar 12 and a lower crossbar 13 connecting and fixing the legs 11 at two sides, the upper sliding shafts 14 are respectively sleeved on the upper portions of the legs 11 at two sides in a sliding fit manner, two ends of the lower sliding member 15 are respectively in a sliding fit with the vertical grooves 11a at the lower portions of the legs 11 at two sides, the energy absorbing device 6 is located in the middle of the leg frame 1, two ends of the energy absorbing device are respectively connected with the upper crossbar 12 and the lower sliding member 15, and the springs 16 are located at two sides of the energy absorbing device 6, and two ends of the springs are respectively connected with.
As shown in fig. 3, in the present embodiment, the energy absorbing device 6 is connected to the lower sliding member 15 through a height adjusting rod 17 and a locking pin 18, the height adjusting rod 17 is vertical and passes through the lower sliding member 15, locking holes are formed in the lower sliding member 15, locking holes are distributed along the height adjusting rod 17, and the locking pin 18 passes through the locking holes in the lower sliding member 15 and then realizes height adjustment by selecting different locking holes in the height adjusting rod 17.
As shown in fig. 3, in the present embodiment, the energy absorbing device 6 is connected to the connecting head 12a of the upper cross bar 12 at the upper end thereof through a self-locking nut 6a and a hexagonal bolt 6b, and connected to the height adjusting rod 17 at the lower end thereof through a self-locking nut 6a and a hexagonal bolt 6 b.
In the present embodiment, the energy absorber 6 is a reverse pull tube type energy absorber. The energy absorption device mainly absorbs energy by utilizing the material deformation of the 1Cr18Ni9Ti stainless steel overturning pipe. The energy absorption load is stable, and is the same no matter compression deformation or tensile deformation, and the influence of the loading rate is small; for specific crash energy, the energy absorption efficiency is highest; light in weight, small can prevent to strike the back-lash of back seat system and cause the injury to the operator. Can provide 85 percent of crash resistance for the seat.
As shown in fig. 4 and 5, in the present embodiment, the seat plate frame 2 includes support plates 21 located on both sides, a front rod 22 and a rear rod 23 connecting the support plates 21 on both sides, and a seat plate 24 laid and fixed on the support plates 21, the front rod 22 and the rear rod 23, upper and lower portions of rear ends of the support plates 21 on both sides are respectively connected and fixed on the upper sliding shaft 14 and the lower sliding member 15, the adjusting assembly 5 is arranged on one support plate 21, and one end of the telescopic rod assembly 4 is hinged to a double lug piece 23a on the rear rod 23.
As shown in fig. 6, in the present embodiment, the back frame 3 includes back bars 31 on both sides, a connecting rod 32 connecting upper portions of the back bars 31 on both sides, and a back plate 33 laid and fixed on the back bars 31 and the connecting rod 32, and the mounting holes 31a are provided on the back bars 31 on both sides and connected to the upper slide shaft 14 through damper bushes 31 b. The damping bush 31b provides a certain damping force when the backrest rotates.
As shown in fig. 6, in the present embodiment, the back plate 3 is provided with a mounting seat 34 for mounting the inertia roll of the seat belt 7.
As shown in fig. 7 to 9, in the present embodiment, the seat frame 2 is fitted over the lower sliding member 15 through the lower positioning holes 21b on both sides, and the bolt 15b passes through the lower positioning hole 21b and the lower sliding member 15 and is pressed and fixed by the nut 15 a; the seat frame 2 is fitted and sleeved on the upper sliding shaft 14 through upper positioning holes 21a at two sides, and the bolt 14c passes through the upper positioning holes 21a and the upper sliding shaft 14 and is pressed and fixed through a threaded sleeve 14 d.
As shown in fig. 9, in the present embodiment, the upper sliding shaft 14 is provided with a nylon washer 14a and a retainer ring 14b for axially retaining the mounting hole 31a, and the nylon washer 14a can increase the swinging friction force of the back frame.
As shown in fig. 10 to 12, in the present embodiment, the telescopic rod assembly 4 includes a locking shaft 41, a connecting shaft 42 and a locking cylinder 43, one end of the locking shaft 41 and one end of the connecting shaft 42 are respectively hinged to the double tabs 23a of the seat plate frame 2 and the hinge hole 31c of the back frame 3 lower than the mounting hole 31a, a locking block 44 and a locking spring 45 are arranged inside the locking cylinder 43, a steel ball 46 is clamped in the opening slot of the housing, a linkage block 47 is connected to the outside in a swingable manner, the steel ball 46 is radially clamped between the locking block 44 and the linkage block 47, the other end of the locking shaft 41 extends into one side of the locking cylinder 43 and simultaneously passes through the locking cylinder 43 and the locking block 44, the other end of the connecting shaft 42 is fixedly connected to the other side of the locking cylinder 43, a return spring 48 is sleeved on the locking shaft 41, and the return spring 48 is tightly pressed between; the adjusting assembly 5 comprises a handle 51 which is arranged on the side of the seat frame 2 in a swinging manner, a rocker arm 52 connected with the handle 51, a support 53 fixedly arranged on the seat frame 2 and a pull rope 54, the pull rope 54 corresponds to the telescopic rod assembly 4 one by one, one end of the pull rope 54 penetrates through the support 53 to be connected with the rocker arm 52, and the other end of the pull rope 54 is connected with the linkage block 47; under normal conditions, the locking spring 45 presses the damping surface 44a of the inner wall of the locking block 44 against the locking shaft 41, and meanwhile, the locking block 44 pushes the steel ball 46 and the linkage block 47 outwards; when unlocking, the handle 51 is operated, and the steel ball 46 is driven inwards by the handle 51, the rocker arm 52, the pull rope 53 and the linkage block 47 in sequence, so that the damping surface 44a on the inner wall of the locking block 44 is separated from the locking shaft 41. The telescopic rod component 4 can be locked at will and adjusted approximately in a stepless way.
In the present embodiment, the operating force required to pull the handle 51 is not more than 80N; the adjusting angle of the backrest frame 3 is 95-115 degrees.
It will be understood that modifications and variations can be made by persons skilled in the art in light of the above teachings and all such modifications and variations are intended to be included within the scope of the invention as defined in the appended claims.
Claims (10)
1. The utility model provides an anti crash seat of back angularly adjustable which characterized in that: comprises a chair leg frame, a seat frame, a backrest frame, an energy absorption device, a telescopic rod component and an adjusting component; the upper part and the lower part of the chair leg frame are respectively matched with an upper sliding shaft and a lower sliding part in a vertical sliding manner, the vertical direction and two ends of the energy absorption device are respectively connected with the structural part and the lower sliding part of the chair leg frame, the structural part of the chair leg frame is connected with a spring, the vertical direction and the lower end of the spring are connected with the lower sliding part, the chair plate frame is connected and fixed on the upper sliding shaft and the lower sliding part, the backrest frame is connected with the upper sliding shaft in a swinging manner through mounting holes on two sides, the telescopic rod assembly is positioned on the back of the chair plate frame, one end of the telescopic rod assembly is hinged with the structural part of the chair plate frame, the other end of the telescopic rod assembly is; the telescopic rod component is locked under a normal state, and the telescopic rod component is unlocked and can stretch and retract and reset when the adjusting component is operated.
2. An anti-crash seat with adjustable backrest angle according to claim 1, characterized in that: the telescopic rod assembly comprises a locking shaft, a connecting shaft and a locking barrel, one end of the locking shaft and one end of the connecting shaft are respectively hinged with the structural part of the seat plate frame and the position, lower than the mounting hole, of the backrest frame, a locking block and a locking spring are arranged inside the locking barrel, a steel ball is clamped in an open slot of the shell, a linkage block is connected to the outside in a swinging manner, the steel ball is radially clamped between the locking block and the linkage block, the other end of the locking shaft extends into one side of the locking barrel and simultaneously penetrates through the locking barrel and the locking block, the other end of the connecting shaft is connected and fixed with the other side of the locking barrel, a reset spring is sleeved on the locking shaft, and the reset spring is tightly; the adjusting assembly comprises a handle which is arranged on the side part of the seat frame in a swinging manner, a rocker arm connected with the handle, a support fixedly arranged on the seat frame and a pull rope, the pull rope and the telescopic rod assembly correspond to each other one by one, one end of the pull rope penetrates through the support and is connected with the rocker arm, and the other end of the pull rope is connected with the linkage block; under the normal state, the locking spring enables the damping surface of the inner wall of the locking block to be tightly pressed on the locking shaft, and meanwhile, the locking block pushes the steel ball and the linkage block outwards; during unlocking, the handle is operated to drive the steel ball inwards through the handle, the rocker arm, the pull rope and the linkage block in sequence, so that the damping surface of the inner wall of the locking block leaves the locking shaft.
3. An anti-crash seat with adjustable backrest angle according to claim 1, characterized in that: the chair leg frame comprises chair legs located on two sides, an upper cross bar and a lower cross bar, the chair legs on the two sides are fixedly connected, the upper sliding shafts are respectively sleeved on the upper portions of the chair legs on the two sides in a sliding fit mode, two ends of the lower sliding piece are respectively in a sliding fit with vertical grooves in the lower portions of the chair legs on the two sides, the energy absorbing device is located in the middle of the chair leg frame, two ends of the energy absorbing device are respectively connected with the upper cross bar and the lower sliding piece, and springs are located on two sides of the energy absorbing device, and.
4. An anti-crash seat with adjustable backrest angle according to claim 1, characterized in that: the energy absorption device is connected with the lower sliding piece through a height adjusting rod and a locking pin, the height adjusting rod is vertical and penetrates through the lower sliding piece, locking holes are formed in the lower sliding piece, locking holes are distributed in the height adjusting rod along the line, and the locking pin penetrates through the locking holes in the lower sliding piece and then is used for realizing height adjustment through selecting different locking holes in the height adjusting rod.
5. An anti-crash seat with adjustable backrest angle according to claim 1, characterized in that: the seat board frame comprises support boards positioned on two sides, a front rod and a rear rod which connect the support boards on the two sides, and a seat board which is laid and fixed on the support boards, the front rod and the rear rod, wherein the upper part and the lower part of the rear ends of the support boards on the two sides are respectively connected and fixed on an upper sliding shaft and a lower sliding part, an adjusting component is arranged on the support board on one side, and one end of a telescopic rod component is hinged with the rear rod.
6. An anti-crash seat with adjustable backrest angle according to claim 1, characterized in that: the backrest frame comprises backrest rods positioned on two sides, connecting rods for connecting the upper parts of the backrest rods on the two sides, and backrest plates paved and fixed on the backrest rods and the connecting rods, wherein the mounting holes are positioned on the backrest rods on the two sides and are connected with the upper sliding shaft through damping bushes.
7. An anti-crash seat with adjustable backrest angle according to claim 1, characterized in that: the seat plate frame is sleeved on the lower sliding piece in a matching way through lower positioning holes on two sides, and the bolt penetrates through the lower positioning holes and the lower sliding piece and is tightly pressed and fixed through the nut; the seat plate frame is sleeved on the upper sliding shaft in a matching mode through the upper positioning holes on the two sides, and the bolt penetrates through the upper positioning holes and the upper sliding shaft and is tightly pressed and fixed through the threaded sleeve.
8. An anti-crash seat with adjustable backrest angle according to claim 1, characterized in that: the upper sliding shaft is provided with a nylon gasket and a check ring which are used for axially limiting the mounting hole, and the nylon gasket can increase the swinging friction force of the backrest frame.
9. An anti-crash seat with adjustable backrest angle according to claim 1, characterized in that: the energy absorber adopts a reverse pull tube type energy absorber.
10. An anti-crash seat with adjustable backrest angle according to claim 1, characterized in that: the adjusting angle of the backrest frame is 95-115 degrees.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011098527.4A CN112141344B (en) | 2020-10-14 | 2020-10-14 | Anti-crash seat with adjustable backrest angle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011098527.4A CN112141344B (en) | 2020-10-14 | 2020-10-14 | Anti-crash seat with adjustable backrest angle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112141344A true CN112141344A (en) | 2020-12-29 |
| CN112141344B CN112141344B (en) | 2024-04-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011098527.4A Active CN112141344B (en) | 2020-10-14 | 2020-10-14 | Anti-crash seat with adjustable backrest angle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112141344B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113562179A (en) * | 2021-08-30 | 2021-10-29 | 航宇救生装备有限公司 | Crash-resistant seat employing extruded tube energy absorber |
| CN114030618A (en) * | 2021-11-19 | 2022-02-11 | 中国直升机设计研究所 | Anti-crash seat of foldable helicopter |
| EP4177163A1 (en) * | 2021-11-09 | 2023-05-10 | AMI Industries, Inc. | Compact rotorcraft seating assembly with non-linear bucket guide channels |
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| CN204250371U (en) * | 2014-11-27 | 2015-04-08 | 航宇救生装备有限公司 | A kind of variable load energy absorption device of helicopter crash proof seat |
| US20150145295A1 (en) * | 2013-11-27 | 2015-05-28 | Eads Sogerma | Bucket seat with changing kinematics |
| CN104760700A (en) * | 2015-04-20 | 2015-07-08 | 北京安达维尔航空设备有限公司 | Self-locking aero seat capable of adjusting height steplessly |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113562179A (en) * | 2021-08-30 | 2021-10-29 | 航宇救生装备有限公司 | Crash-resistant seat employing extruded tube energy absorber |
| CN113562179B (en) * | 2021-08-30 | 2023-10-27 | 航宇救生装备有限公司 | Crash-resistant seat using extruded tube energy absorber |
| EP4177163A1 (en) * | 2021-11-09 | 2023-05-10 | AMI Industries, Inc. | Compact rotorcraft seating assembly with non-linear bucket guide channels |
| US11794904B2 (en) | 2021-11-09 | 2023-10-24 | Ami Industries, Inc. | Compact rotorcraft seating assembly with non-linear bucket guide channels |
| CN114030618A (en) * | 2021-11-19 | 2022-02-11 | 中国直升机设计研究所 | Anti-crash seat of foldable helicopter |
| CN114030618B (en) * | 2021-11-19 | 2023-05-23 | 中国直升机设计研究所 | Folding helicopter crash-resistant seat |
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| CN112141344B (en) | 2024-04-09 |
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