阅读说明：本技术 耐高速气流吹袭的弹射座椅头靠组件 (Ejection seat headrest assembly resisting high-speed airflow blowing ) 是由 姜南 张守克 于 2021-08-30 设计创作，主要内容包括：本发明公开了一种耐高速气流吹袭的弹射座椅头靠组件,包括硬质头靠和头靠罩,硬质头靠通过后面两侧的头靠支座安装在座椅伞箱上,头靠罩铺放的设在硬质头靠的前面,头靠罩包括两层布片以及包裹在两层布片之间的软垫,头靠罩外侧面设有两道用于限位固定救生伞操纵带的盖片,布片和盖片均采用可透气的三维网眼织物,工作时,两条救生伞操纵带从座椅伞箱底部伸出,从硬质头靠后方绕至上方,再向下分别穿过两道盖片后与飞行员肩带连接。本发明可以减轻高速气流产生的高压,保证救生伞操纵带不会因为高速气流产生的高压而拉出,结构简单,重量轻。(The invention discloses an ejection seat headrest assembly resistant to high-speed airflow blowing, which comprises a hard headrest and a headrest cover, wherein the hard headrest is arranged on a seat umbrella box through headrest supports on two sides of the back of the hard headrest, the headrest cover is laid in front of the hard headrest and comprises two layers of cloth sheets and a cushion wrapped between the two layers of cloth sheets, two cover sheets used for limiting and fixing life-saving umbrella operating belts are arranged on the outer side surface of the headrest cover, the cloth sheets and the cover sheets are made of breathable three-dimensional mesh fabrics, and when the ejection seat headrest assembly works, the two life-saving umbrella operating belts extend out of the bottom of the seat umbrella box, wind from the back of the hard headrest to the upper side, and then downwards penetrate through the two cover sheets respectively and are connected with shoulder straps of a pilot. The invention can reduce the high pressure generated by high-speed airflow, ensures that the operating band of the lifesaving parachute can not be pulled out due to the high pressure generated by the high-speed airflow, and has simple structure and light weight.)

1. The utility model provides a resistant ejection seat headrest subassembly that high velocity air blew and assault which characterized in that: including stereoplasm head rest and head rest cover, the stereoplasm head rest is installed on the seat parachute box through the head rest support of back both sides, what the head rest cover was spread establishes in the front of stereoplasm head rest, the head rest cover includes two layers of cloth and the cushion of parcel between two-layer cloth, head rest cover lateral surface is equipped with the twice cover plate that is used for spacing fixed lifesaving umbrella to operate the area, cloth and cover plate all adopt the three-dimensional mesh fabric that can breathe freely, in operation, two lifesaving umbrella are operated the area and are stretched out from seat parachute box bottom, wind to the top from stereoplasm head rest rear, pass the twice cover plate respectively again downwards and be connected with pilot's baldric.

2. A pop-up seat headrest assembly that is resistant to high velocity air flow blows as claimed in claim 1 wherein: the periphery of the headrest cover is provided with a skirt edge which is used for covering the flanging of the hard headrest and installing and fixing the whole headrest cover through a nylon hasp.

3. A pop-up seat headrest assembly that is resistant to high velocity air flow blows as claimed in claim 1 wherein: one side of the cover sheet is sewed with the headrest cover, and the other side is connected with the headrest cover through a nylon hasp.

4. A pop-up seat headrest assembly that is resistant to high velocity air flow blows as claimed in claim 1 wherein: the hard headrest is made of carbon fiber materials.

5. A pop-up seat headrest assembly that is resistant to high velocity air flow blows as claimed in claim 1 wherein: the soft cushion is made of polyurethane foam material.

6. A pop-up seat headrest assembly that is resistant to high velocity air flow blows as claimed in claim 1 wherein: the two cover plates are spaced by 100 mm.

Technical Field

The invention belongs to the field of ejection seats, and particularly relates to an ejection seat headrest assembly resistant to high-speed airflow blowing.

Background

At present, an ejection seat headrest assembly is usually used for fixing a soft headrest on a hard seat umbrella box or a hard component connected with the seat umbrella box, in order to fix the soft headrest, a heavier and complex fastening connecting piece needs to be arranged, the outermost layer of the headrest is made of airtight skins such as leather, two lifesaving umbrella operating belts penetrate through the space between the headrest and the skins, and after the ejection seat is ejected, the headrest assembly is blown by high-speed airflow, the airflow can enter the space between the headrest and the skins, and the lifesaving umbrella operating belts are disordered, entangled or even separated.

Disclosure of Invention

The invention aims to provide an ejection seat headrest assembly resistant to high-speed airflow blowing, which can reduce high pressure generated by high-speed airflow, ensure that a control belt of a life-saving umbrella cannot be pulled out due to the high pressure generated by the high-speed airflow, and has the advantages of simple structure and light weight.

The technical scheme adopted by the invention is as follows:

the utility model provides a resistant ejection seat head rest subassembly that high velocity air blew and assault, including stereoplasm head rest and head rest cover, the stereoplasm head rest is installed on the seat parachute box through the head rest support of back both sides, what the head rest cover was laid establishes in the front of stereoplasm head rest, the head rest cover includes two layers of cloth and wraps up the cushion between two layers of cloth, head rest cover lateral surface is equipped with the twice cover plate that is used for spacing fixed lifesaving umbrella manipulation area, cloth and cover plate all adopt the three-dimensional mesh fabric that can breathe freely, in operation, two lifesaving umbrella manipulation areas stretch out from seat parachute box bottom, wind to the top from stereoplasm head rest rear, pass down respectively again behind the twice cover plate and be connected with pilot's baldric.

Furthermore, the periphery of the headrest cover is provided with a skirt edge which is used for covering the flanging of the hard headrest and installing and fixing the whole headrest cover through a nylon hasp.

Furthermore, one side of the cover sheet is sewn with the headrest cover, and the other side of the cover sheet is connected with the headrest cover through a nylon buckle.

Further, the hard headrest is made of carbon fiber materials.

Further, the soft pad is made of polyurethane foam.

Further, the two cover sheets are spaced apart by 100 mm.

The invention has the beneficial effects that:

the cloth piece is made of breathable three-dimensional mesh fabric, so that the surface of the headrest cover is not smooth, the boundary layer can be directly damaged when high-speed airflow blows, local turbulence is generated, and high pressure generated by the high-speed airflow is reduced; the cover plate is made of breathable three-dimensional mesh fabric, and the stagnant gas flows out through the breathable fabric after forming a certain pressure, so that the operating belt of the lifesaving parachute is prevented from damaging the headrest cover structure due to the fact that the operating belt cannot bear high pressure generated by high-speed airflow, the operating belt is pulled out, the lifesaving parachute operating belt is guaranteed to work normally under the high-speed condition, and the lifesaving success rate is improved; the three-dimensional mesh fabric is adopted, and the anti-mildew capability is also realized; the headrest assembly realizes the supporting and energy absorbing functions through the matching of the hard headrest and the soft cushion, so that the comfort of leaning on at ordinary times and the impact reduction during collision are ensured; the headrest assembly is installed through headrest supports on two sides, and is simple in structure and light in weight.

Drawings

Figure 1 is a schematic view of the installation of a catapult seat headrest assembly resistant to high velocity air flow in an embodiment of the invention.

Fig. 2 is a layout view of an operating strap of the parachute in the embodiment of the present invention.

Fig. 3 is a schematic view illustrating the installation of the parachute operating straps and the headrest cover in the embodiment of the present invention.

Fig. 4 is an installation cross-sectional view of a parachute operating band and a headrest cover in an embodiment of the present invention.

In the figure: 1-seat umbrella box; 2-headrest support; 3-a rigid headrest; 4-a headrest cover; 5-parachute maneuvering belt; 6-cushion; 7-nylon fastener tape; 8-cover slip.

Detailed Description

The invention is further described below with reference to the figures and examples.

As shown in fig. 1 to 4, the ejection seat headrest assembly resisting high-speed air flow blowing comprises a hard headrest 3 and a headrest cover 4, wherein the hard headrest 3 is installed on a seat umbrella box 1 through headrest supports 2 on two sides of the back, the headrest cover 4 is arranged in front of the hard headrest 3 in a laying mode, the headrest cover 4 comprises two layers of cloth sheets and a cushion 6 wrapped between the two layers of cloth sheets, two cover sheets 8 used for limiting and fixing a life-saving umbrella operating belt 5 are arranged on the outer side face of the headrest cover 4, the cloth sheets and the cover sheets 8 are made of breathable three-dimensional fabrics, and when the ejection seat headrest assembly works, the two life-saving umbrella operating belts 5 extend out of the bottom of the seat umbrella box 1, wind to the upper side from the back of the hard headrest 3, downwards penetrate through the two cover sheets 8 respectively and then are connected with pilot shoulder straps.

As shown in fig. 3 and 4, in the present embodiment, one side of the cover sheet 8 is sewn with the headrest cover 4, and the other side is connected with the headrest cover 4 through the velcro 7, so that the parachute operating band 5 can pass through the cover sheet 8 conveniently.

In order to facilitate the installation and fixation of the headrest cover 4, a skirt edge can be arranged on the periphery of the headrest cover 4, the skirt edge covers the flanging of the hard headrest 3, and the whole headrest cover 4 is installed and fixed through a nylon buckle.

In order to reduce the weight of the headrest while maintaining a certain strength, the hard headrest 3 may be made of a carbon fiber material, and the cushion 6 may be made of a polyurethane foam material.

The size and spacing of the cover sheets 8 is set according to the size and arrangement of the parachute operating band 5, and in this embodiment, the two cover sheets 8 are spaced apart by 100 mm.

In the invention, the cloth piece adopts breathable three-dimensional mesh fabric, so that the surface of the headrest cover 4 is not smooth, and the boundary layer can be directly damaged when high-speed airflow blows, local turbulence is generated, and high pressure generated by the high-speed airflow is reduced; the cover plate 8 is made of breathable three-dimensional mesh fabric, and the stagnant gas flows out through the breathable fabric after forming a certain pressure, so that the parachute operating belt 5 is prevented from damaging the structure of the headrest cover 4 due to the fact that the parachute operating belt 5 cannot bear high pressure generated by high-speed airflow, the parachute operating belt 5 is pulled out, normal work of the parachute operating belt 5 under the high-speed condition is guaranteed, and the lifesaving success rate is improved; the three-dimensional mesh fabric is adopted, and the anti-mildew capability is also realized; the headrest assembly realizes the supporting and energy absorbing functions through the cooperation of the hard headrest 6 and the soft cushion 6, so that the comfort of leaning on at ordinary times and the impact reduction during collision are ensured; the headrest assembly is installed through headrest supports 2 on two sides, and is simple in structure and light in weight.

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.