阅读说明：本技术 采用挤压管式吸能器的抗坠毁座椅 (Crash-resistant seat employing extruded tube energy absorber ) 是由 石小潘 王夫帅 周海波 薛萌萌 王羚杰 于 2021-08-30 设计创作，主要内容包括：本发明公开了一种采用挤压管式吸能器的抗坠毁座椅,包括座椅立柱、上横杆、下横杆、挤压管、座板组件和挤压座组件,座椅立柱作为座椅主骨架固定安装,上横杆和下横杆均在两端可滑动配合的套在两侧的座椅立柱上,挤压管与座椅立柱平行且上下端分别与上横杆和下横杆连接固定,座板组件安装固定在下横杆上,挤压座组件安装固定在座椅立柱上,挤压座组件包括一对并排且留有间隙的挤压辊,挤压管下部设有一段收窄的扁平区,挤压管通过扁平区向下穿过挤压辊之间的间隙后卡放在挤压辊上,抗坠毁过程中挤压辊从两侧滚动挤压挤压管。本发明结构简单、能够减轻座椅的重量,零件数量少、可靠性高,挤压管与座椅立柱平行设置、保证了座椅抗坠毁吸能的有效性。(The invention discloses an anti-crash seat adopting an extruded tube type energy absorber, which comprises seat columns, an upper cross bar, a lower cross bar, an extruded tube, a seat plate assembly and an extruded seat assembly, wherein the seat columns are fixedly installed as a seat main framework, the upper cross bar and the lower cross bar are sleeved on the seat columns on two sides in a sliding fit mode at two ends, the extruded tube is parallel to the seat columns, the upper end and the lower end of the extruded tube are respectively connected and fixed with the upper cross bar and the lower cross bar, the seat plate assembly is installed and fixed on the lower cross bar, the extruded seat assembly is installed and fixed on the seat columns, the extruded seat assembly comprises a pair of extruded rollers which are arranged side by side and have gaps, a narrow flat area is arranged at the lower part of the extruded tube, the extruded tube downwards penetrates through the gaps between the extruded rollers through the flat area and then is clamped on the extruded rollers, and the extruded tubes are rolled and extruded from two sides in the anti-crash process. The invention has simple structure, can reduce the weight of the seat, has less parts and high reliability, and ensures the crash resistance and energy absorption effectiveness of the seat by arranging the extrusion pipe and the seat upright column in parallel.)

1. The utility model provides an adopt anti crash seat of extrusion tubular energy absorber which characterized in that: the seat comprises a seat stand column, go up the horizontal pole, the sheer pole, the extrusion pipe, bedplate subassembly and extrusion seat subassembly, the seat stand column is as seat main skeleton fixed mounting, but go up horizontal pole and sheer pole all at both ends sliding fit's cover on the seat stand column of both sides, the extrusion pipe is parallel with the seat stand column and the upper and lower extreme is connected fixedly with last horizontal pole and sheer pole respectively, bedplate unit mount is fixed on the sheer pole, the installation of extrusion seat subassembly is fixed on the seat stand column, the extrusion seat subassembly includes a pair of extrusion rollers that just keep gapped side by side, the extrusion pipe lower part is equipped with one section flat area that narrows down, the extrusion pipe passes the card after the clearance between the extrusion roller downwards through the flat area and puts on the extrusion roller, the extrusion roller rolls extrusion tube from both sides in the anti-crash process.

2. An anti-crash seat employing an extruded tube energy absorber as defined in claim 1, wherein: the extrusion seat component further comprises a mounting seat, one end of the mounting seat is sleeved on the seat stand column and is provided with a limiting hole which is communicated with the seat stand column from top to bottom through screw fixation and the other end of the mounting seat, the extrusion roller comprises a mounting screw and a bushing, the bushing is located in the limiting hole and is axially limited, one end of the mounting screw is in threaded connection with the mounting seat, the middle of the mounting screw is matched with the bushing and penetrates through the bushing, the other end of the mounting screw is an operating head, and the extrusion pipe penetrates through a gap between the bushings after extending into the limiting hole.

3. An anti-crash seat employing an extruded tube energy absorber as defined in claim 2, wherein: the lining is made of high-strength and wear-resistant hard alloy steel materials, and the surface roughness is low.

4. An anti-crash seat employing an extruded tube energy absorber as defined in claim 1, wherein: the extrusion pipe is made of hard aluminum alloy materials.

5. An anti-crash seat employing an extruded tube energy absorber as defined in claim 1, wherein: the upper end of the extrusion pipe is connected with the upper cross rod through an upper joint, the upper part of the upper joint is connected with the upper cross rod through a screw, and the lower part of the upper joint is sleeved on the extrusion pipe and is connected with the extrusion pipe through a bolt.

6. An anti-crash seat employing an extruded tube energy absorber as defined in claim 1, wherein: the bottom rail passes through the adapter sleeve on the seat stand, and the bedplate subassembly is connected to be fixed on the adapter, is equipped with the mounting groove on the adapter, and the extrusion pipe is located the mounting groove, and the bolt passes extrusion pipe and mounting groove and connects the two and cooperate the gasket to press from both sides tightly with the extrusion pipe.

7. An anti-crash seat employing an extruded tube energy absorber as defined in claim 1, wherein: both ends of the upper cross rod and the lower cross rod are in clearance fit with the seat upright post.

8. An anti-crash seat employing an extruded tube energy absorber as defined in claim 1, wherein: a back cloth and a safety belt are arranged between the upper cross bar and the seat board component.

9. An anti-crash seat employing an extruded tube energy absorber as defined in claim 1, wherein: the extrusion pipe is located the seat stand one side inwards.

Technical Field

The invention relates to an anti-crash seat, in particular to an anti-crash seat adopting an extruded tube type energy absorber.

Background

An energy absorber in an anti-crash seat is a key for realizing the anti-crash function of a helicopter, the conventional energy absorber comprises a roll-over tube type energy absorber, a rolling type energy absorber, a steel wire bending mechanism energy absorber, a honeycomb structure energy absorber, a spiral rolling ring energy absorber, a crushing cylinder type energy absorber, a folding cylinder energy absorber and the like, and the energy absorbers generally have the problems of complicated structure and manufacturing process, low adaptability of the energy absorbers and a main framework of a seat of a passenger and the like.

Disclosure of Invention

The invention aims to provide an anti-crash seat adopting an extruded tube type energy absorber, which has the advantages of simple structure, capability of effectively reducing the weight of the seat, small number of parts, high reliability, parallel arrangement of an extruded tube and a seat upright post and guarantee the effectiveness of anti-crash energy absorption of the seat.

The technical scheme adopted by the invention is as follows:

the utility model provides an adopt anti crash seat of extrusion tube formula energy absorber, including the seat stand, go up the horizontal pole, the sheer pole, the extrusion tube, bedplate subassembly and extrusion seat subassembly, the seat stand is as seat owner skeleton fixed mounting, it all overlaps on the seat stand of both ends sliding fit to go up horizontal pole and sheer pole, the extrusion tube is parallel with the seat stand and the upper and lower extreme is connected fixedly with last horizontal pole and sheer pole respectively, bedplate unit mount is fixed on the sheer pole, extrusion seat unit mount is fixed on the seat stand, extrusion seat subassembly includes a pair of extrusion roller that just leaves gapped side by side, the extrusion tube lower part is equipped with one section flat area of narrowing, the extrusion tube passes the card after the clearance between the extrusion roller downwards through the flat area and puts on the extrusion roller, anti crash in-process extrusion roller rolls extrusion tube from both sides.

Further, the extrusion seat subassembly still includes the mount pad, and the one end cover of mount pad is equipped with the spacing hole that link up from top to bottom through fix with screw, the other end on the seat stand, and the squeeze roll includes mounting screw and bush, and the bush is located spacing downthehole and axial spacing, and mounting screw's one end threaded connection on the mount pad, middle part complex pass bush, the other end be the operating head, and the extrusion pipe passes the clearance between the bush after stretching into spacing hole.

Furthermore, the lining is made of high-strength and wear-resistant hard alloy steel materials, and the surface roughness is low.

Furthermore, the extrusion pipe is made of hard aluminum alloy materials.

Furthermore, the upper end of the extrusion pipe is connected with the upper cross rod through an upper joint, the upper part of the upper joint is connected with the upper cross rod through a screw, and the lower part of the upper joint is sleeved on the extrusion pipe and is connected with the extrusion pipe through a bolt.

Further, the bottom rail passes through the adapter sleeve on the seat stand, and the bedplate subassembly is connected and is fixed on the adapter, is equipped with the mounting groove on the adapter, and the extrusion pipe is located the mounting groove, and the bolt passes extrusion pipe and mounting groove and connects the two and cooperate the gasket to press from both sides tight with the extrusion pipe.

Furthermore, both ends of the upper cross rod and the lower cross rod are in clearance fit with the seat upright post.

Furthermore, a backrest cloth and a safety belt are arranged between the upper cross bar and the seat board assembly.

Further, the crush tube is located on an inward-facing side of the seat post.

The invention has the beneficial effects that:

the extrusion seat assembly and the seat upright post belong to a fixed part of a seat, an upper cross bar, a lower cross bar, an extrusion pipe and a seat plate assembly are connected together to form a movable part of the seat, when the load borne by the seat does not reach a set value, the movable part of the seat is clamped and supported on the extrusion seat assembly through the extrusion pipe, when the load borne by the seat reaches a set impact load value, the weight of a human body drives the movable part of the seat to move downwards, meanwhile, the extrusion rollers roll and extrude the extrusion pipe from two sides, the extrusion pipe deforms, impact energy is converted into strain energy and heat energy, and the energy absorption effect is achieved; the seat has the advantages of simple structure, capability of effectively reducing the weight of the seat, small number of parts, high reliability, parallel arrangement of the extrusion pipe and the seat upright post, and guarantee of crash resistance and energy absorption effectiveness of the seat.

Drawings

FIG. 1 is a schematic structural view of an anti-crash seat employing an extruded tube energy absorber in an embodiment of the present invention.

FIG. 2 is a schematic view of an extruded tube in an embodiment of the invention.

FIG. 3 is a first schematic structural diagram of a press seat assembly according to an embodiment of the present invention.

Fig. 4 is a second schematic structural diagram of a press seat assembly according to an embodiment of the invention.

Fig. 5 is a schematic view showing the connection of the upper crossbar, the crush tube and the seat post in the embodiment of the present invention.

FIG. 6 is a schematic view of the connection of the bottom rail, seat pillar, crush tube and crush seat assembly in an embodiment of the present invention.

In the figure: 1-extruding a tube; 2-extruding a seat component; 3-a lower cross bar; 4-back cloth; 5-a seat post; 6-upper cross bar; 7-a safety belt; 8-a seat plate assembly; 9-upper joint; 10-bolt; 11-a mounting seat; 12-a limiting hole; 13-mounting screws (hexagon socket head); 14-a bushing; 15-screw (hex head); 16-screw (socket head); 17-an adapter; 18-bolt (hexagon socket head); 19-pad.

Detailed Description

The invention is further illustrated by the following figures and examples.

As shown in fig. 1 to 6, an anti-crash seat using an extruded tube type energy absorber comprises a seat post 5, an upper cross bar 6, a lower cross bar 3, extrusion tube 1, bedplate subassembly 8 and extrusion seat subassembly 2, seat post 5 is as seat main skeleton fixed mounting, but go up horizontal pole 6 and sheer pole 3 all overlap on the seat post 5 of both ends sliding fit, extrusion tube 1 is parallel with seat post 5 and the upper and lower ends is connected fixedly with last horizontal pole 6 and sheer pole 3 respectively, bedplate subassembly 8 is installed and is fixed on sheer pole 3, extrusion seat subassembly 2 is installed and is fixed on seat post 5, extrusion seat subassembly 2 includes a pair of extrusion roller that just leaves gapped side by side, extrusion tube 1 lower part is equipped with one section flat area that narrows down, extrusion tube 1 passes the clearance between the extrusion roller downwards through the flat area and blocks and put on the extrusion roller, the extrusion roller rolls extrusion tube 1 from both sides in the anti-damage process.

The extrusion seat assembly 2 and the seat upright post 5 belong to a fixed part of a seat, an upper cross rod 6, a lower cross rod 3, an extrusion tube 1 and a seat plate assembly 8 are connected together to form a movable part of the seat, when the load borne by the seat does not reach a set value, the movable part of the seat is clamped and supported on the extrusion seat assembly 2 through the extrusion tube 1, when the load borne by the seat reaches a set impact load value, the movable part of the seat is driven by the weight of a human body to move downwards, meanwhile, the extrusion tube 1 is rolled and extruded by extrusion rollers from two sides, the extrusion tube 1 deforms, impact energy is converted into strain energy and heat energy, and the energy absorption effect is achieved; the seat has the advantages of simple structure, capability of effectively reducing the weight of the seat, small number of parts and high reliability, and the extrusion pipe 1 and the seat upright post 5 are arranged in parallel, so that the crash resistance and energy absorption effectiveness of the seat are ensured.

As shown in fig. 3, 4 and 6, in this embodiment, the squeeze seat assembly 2 further includes a mounting seat 11, one end of the mounting seat 11 is sleeved on the seat pillar 5 and fixed by a screw 16, the other end of the mounting seat is provided with a limiting hole 12 penetrating up and down, the squeeze roller includes a mounting screw 13 and a bushing 14, the bushing 14 is located in the limiting hole 12 and axially limited, one end of the mounting screw 13 is connected to the mounting seat 11 by a thread, the middle part of the mounting screw is matched with the bushing 14 to pass through, the other end of the mounting screw is an operating head, and the squeeze pipe 1 extends into the limiting hole 12 and then passes through a gap between the bushings 14. The mounting seat 11 is convenient to mount on the seat upright post 5, the position is adjustable, the four sides of the extrusion pipe 1 are surrounded and limited by the limiting hole 12, and the reliability is improved.

In this embodiment, the bushing 14 is made of a high-strength wear-resistant hard alloy steel material, and has low surface roughness, so that the extruded tube 1 can be smoothly rolled and extruded during crash.

In this embodiment, the extrusion tube 1 is made of a hard aluminum alloy material, which can support gravity at ordinary times and has a proper buffering effect when crashed.

As shown in fig. 2 and 5, in this embodiment, the upper end of the extrusion tube 1 is connected to the upper cross bar 6 through the upper joint 9, the upper part of the upper joint 9 is connected to the upper cross bar 6 through the screw 15, the lower part of the upper joint 9 is sleeved on the extrusion tube 1 and is connected to the bolt 10, and the connection is convenient and reliable.

As shown in fig. 6, in this embodiment, the bottom rail 3 is sleeved on the seat pillar 5 through the adapter 17, the seat plate assembly 8 is connected and fixed on the adapter 17, the adapter 17 is provided with a mounting groove, the extrusion pipe 1 is located in the mounting groove, the bolt 18 passes through the extrusion pipe 1 and the mounting groove to connect the two and cooperate with the gasket 19 to clamp two sides of the extrusion pipe 1, the connection is convenient and reliable, and the position degree of the extrusion pipe 1 is ensured.

In this embodiment, both ends of the upper crossbar 6 and the lower crossbar 3 are clearance-fitted with the seat post 5.

As shown in fig. 1, in the present embodiment, a backrest cloth 4 and a seat belt 7 are provided between an upper crossbar 6 and a seat plate assembly 8.

As shown in fig. 1, in the present embodiment, the crush tube 1 is located on the inward side of the seat post 5 to facilitate seat installation.

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.