CN216611631U

CN216611631U - Comfortable structure for ejection seat

Info

Publication number: CN216611631U
Application number: CN202122976068.1U
Authority: CN
Inventors: 姜南; 张守克; 赵挺浩; 辛秋和
Original assignee: AVIC Aerospace Life Support Industries Ltd
Current assignee: AVIC Aerospace Life Support Industries Ltd
Priority date: 2021-11-26
Filing date: 2021-11-26
Publication date: 2022-05-27
Anticipated expiration: 2031-11-26

Abstract

The utility model provides a comfortable structure for ejecting a seat, which comprises an ejection barrel, a seat pan, a headrest, a shoulder rest, a backrest, a ball screw and a lifting electric mechanism, wherein the headrest is positioned at the upper part of the shoulder rest and is fixedly connected with one end of the shoulder rest, the other end of the shoulder rest is connected with one end of a shoulder belt tensioning mechanism, and the other two ends of the shoulder belt tensioning mechanism are respectively and fixedly connected with the ejection barrel which is bilaterally symmetrical, so that the ejection barrel, the headrest, the shoulder rest and the shoulder belt tensioning mechanism are fixed, and back support protection is provided for a pilot; the backrest is installed on the chair basin, the shoulder belt tensioning mechanism is connected with the ball screw, the lifting electric mechanism is driven by the direct current motor, the chair basin is adjusted to lift through a button, the ball screw is driven to rotate through the speed reducer, so that the ball screw makes linear motion, the chair basin is driven to slide up and down along the ejection cylinder, the adjustment of the height of the backrest installed on the chair basin is realized, and pilots with different heights can adapt to respective eye positions.

Description

Comfortable structure for ejection seat

Technical Field

The utility model belongs to the technical field of ejection lifesaving, and particularly relates to a comfortable structure for an ejection seat.

Background

At present, the design of a known ejection seat backrest is an integral structure, the ejection seat is limited by the structure and important requirements, the size of the backrest along an ejection axis cannot be large, the backrest is installed on a seat basin and can support the waist, pilots with different sitting heights can meet the requirement of working eye positions by adjusting a seat basin lifting mechanism, but the position relation between the backrest and a human body is not changed, and the back support effect cannot be improved.

In summary, the prior art catapult seat back supports only the waist of the pilot and does not support the back well.

SUMMERY OF THE UTILITY MODEL

The purpose of the utility model is: the structure utilizes the two-point support principle and combines the structural characteristics of the seat, and not only can partially support the waist, namely the lumbar vertebra 4 and the lumbar vertebra 5; while supporting the back, i.e. the

thoracic

5, 6 vertebrae. The structure has light weight, meets the requirements of ejection seat weight and structure, simultaneously meets the support of pilots with different sitting heights, and has convenient adjustment and good comfort.

The technical scheme adopted by the utility model for solving the technical problem is as follows: a comfortable structure for two-point support of an ejection seat comprises an ejection cylinder, a seat pan, a headrest, a shoulder rest, a backrest, a ball screw and a lifting electric mechanism, wherein the headrest is positioned at the upper part of the shoulder rest and is fixedly connected with one end of the shoulder rest, the other end of the shoulder rest is connected with one end of a shoulder belt tensioning mechanism, and the other two ends of the shoulder belt tensioning mechanism are respectively and fixedly connected with the ejection cylinder which is bilaterally symmetrical, so that the ejection cylinder, the headrest, the shoulder rest and the shoulder belt tensioning mechanism are fixed, and back support protection is provided for pilots; the backrest is installed on the chair basin, the shoulder belt tensioning mechanism is connected with the ball screw, the lifting electric mechanism is driven by the direct current motor, the chair basin is adjusted to lift through a button, the ball screw is driven to rotate through the speed reducer, so that the ball screw makes linear motion, the chair basin is driven to slide up and down along the ejection cylinder, the adjustment of the height of the backrest installed on the chair basin is realized, and pilots with different heights can adapt to respective eye positions.

In the scheme, a four-way lumbar support system is installed behind the backrest, and the four-way lumbar support system is adjusted in four directions to provide lumbar support protection for different types of pilots. The backrest is also provided with a cushion.

In the scheme, the structure further comprises ejection cylinder fan-shaped parts, and the headrest is connected with the ejection cylinders on the two sides through the ejection cylinder fan-shaped parts.

In the above scheme, the headrest comprises a head sleeve and a head core, wherein the head core is made of polyurethane foam, and the head sleeve is made of foam carbon fiber fabric and is wrapped and sewn with the head core. The shoulder rest comprises a shoulder sleeve and a shoulder core, wherein the shoulder core is made of polyurethane foam, the shoulder sleeve is made of foam carbon fiber fabric, and the shoulder core is sewn in a covering mode. The cushion comprises a seat sleeve and a seat core, wherein the seat core is made of polyurethane foam, the seat sleeve is made of foam carbon fiber fabric, and the seat core is covered and sewn. The head cover, the shoulder cover and the seat cover are respectively provided with a fireproof layer outer sleeve.

The design principle of the utility model is as follows: the back support member is implemented in two parts, including a backrest and a shoulder rest. The novel backrest is designed by combining the characteristics of a seat structure, the structure is mainly connected with a chair basin, a four-way waist support system is added, the support of the waist is completed, and the support of two rib parts can be realized; the shoulder rest mainly solves the support of the shoulder, and the shoulder rest is connected with the shoulder belt tensioning mechanism and indirectly connected with the ejection barrel. The comfort component structure is formed by a structural part made of carbon fiber and a sewing part, wherein the sewing part mainly comprises polyurethane foam, a fireproof layer, an outer sleeve and a connecting part.

The utility model has the beneficial effects that: the whole back support is divided into two parts, one part maintains the design state of the original seat, the waist is provided with a four-way waist support, and a shoulder rest is specially designed. Together completing the support of the pilot's back. Therefore, the technical effect of the patent is remarkable: 1. the back is supported more reasonably, and the supporting area is increased; 2. the design of the shoulder rest is irrelevant to the seat pan, so that the back height of pilots with different sitting heights can be changed when the seat pan lifting mechanism works, the adaptability is wider, and the comfort is also improved. 3. A four-way adjusting system is added on the waist, so that the adaptability of the waist to different human bodies can be improved. The back support device is used for solving the problem of back support for pilots during flight, the split design is adopted, the upper back and the lower back are effectively supported, and the lower lumbar support can realize four-way adjustment.

Drawings

FIG. 1 is a schematic front view of the present invention.

FIG. 2 is a schematic view of another angle structure of the present invention.

In the drawings, 1-the projectile barrel sector; 2-shoulder belt tensioning mechanism; 3-shooting a barrel; 4-chair basin; 5-a headrest; 6-shoulder rest; 7-a four-way lumbar support system; 8-backrest; 9-cushion; 10-ball screw; 11-lifting electric mechanism.

Detailed Description

The utility model is further illustrated with reference to the following figures and examples.

As shown in fig. 1 and 2, the headrest 5 is positioned at the upper part of the shoulder rest 6 and is fixedly connected with one end of the shoulder rest 6, the other end of the shoulder rest 6 is connected with one end of the shoulder strap tensioning mechanism 2, and the other two ends of the shoulder strap tensioning mechanism 2 are respectively and fixedly connected with the ejection cylinders 3 which are bilaterally symmetrical, so that the ejection cylinders 3, the headrest 5, the shoulder rest 6 and the shoulder strap tensioning mechanism 2 are fixed to provide back support protection for pilots; the backrest 8 is installed on the chair basin 4, the shoulder strap tensioning mechanism 2 is connected with the ball screw 10, the lifting electric mechanism 11 is driven by a direct-current motor, the chair basin 4 is adjusted to lift through a button, the ball screw is driven to rotate through the speed reducer, so that the ball screw 10 makes linear motion, the chair basin 4 is driven to slide up and down along the ejection cylinder 3, the height of the backrest 8 installed on the chair basin 4 is adjusted, and pilots with different heights can adapt to respective eye positions. A four-way lumbar support system 7 is mounted behind the backrest 8, and lumbar support protection is provided for different types of pilots by adjusting the four-way lumbar support system 7 in four directions.

The structure further comprises an ejection cylinder sector 1, and the headrest 5 is connected with the ejection cylinders 3 on two sides through the ejection cylinder sector 1. The backrest 8 is also provided with a cushion 9. The headrest 5 comprises a head sleeve and a head core, wherein the head core is made of polyurethane foam, the head sleeve is made of foam carbon fiber fabric, and the head core is wrapped and sewn. The shoulder rest 6 comprises a shoulder sleeve and a shoulder core, wherein the shoulder core is made of polyurethane foam, the shoulder sleeve is made of foam carbon fiber fabric, and the shoulder core is covered and sewn. The cushion 9 comprises a seat sleeve and a seat core, wherein the seat core is made of polyurethane foam, the seat sleeve is made of foam carbon fiber fabric, and the seat core is covered and sewn. The head cover, the shoulder cover and the seat cover are respectively provided with a fireproof layer outer sleeve.

The headrest 5, the shoulder rest 6, the backrest 8, the four-way lumbar support system 7 behind the backrest and the cushion 9 form a comfort component. The backrest 8 arranged on the seat pan 4 and the four-way lumbar support system 7 of the system jointly form a support structure for the waist, wherein the four-way lumbar support system 7 is arranged on the backrest 8, and the four-way lumbar support system 7 has a four-way adjustable function and can adapt to the range of more range pilots. The use is simple, and the corresponding button operation can be operated. The shoulder rest 6 is connected with the shoulder belt tensioning mechanism 2 and is indirectly connected with the ejection barrel through the ejection barrel sector 1 and the ejection barrels 3 at the two sides. The ejection barrel 3, the headrest 5, the shoulder rest 6 and the shoulder belt tensioning mechanism 2 are fixed, the shell of the shoulder belt tensioning mechanism 2 is connected with a ball screw 10, and the backrest 8, the seat cushion 9 and the like are installed on the chair basin 4. The lifting of the seat basin is adjusted through the button, the lifting electric mechanism 11 is driven by a direct current motor, and a ball screw is driven to rotate through a speed reducer, so that the ball screw 10 makes linear motion, the seat basin 4 is driven to slide up and down along the ejection cylinder 3, the vertical adjustment of the sitting height is realized, and pilots with different heights can be ensured to adapt to respective eye positions. The shoulder rest 6 is responsible for supporting

thoracic vertebrae

5 and 6 vertebrae of the pilot, the backrest 8 and the four-way lumbar support system 7 are responsible for supporting the waist, and the four-way lumbar support system 7 is mainly responsible for supporting

lumbar vertebrae

4 and 5 vertebrae to jointly form two-point support for the lumbar back of the pilot.

The above only represents embodiments of the present invention, which are described in more detail and in greater detail, but not to be construed as limiting the scope of the utility model. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application.

Claims

1. A comfort structure for ejecting a seat is characterized by comprising an ejection cylinder (3), a seat basin (4), a headrest (5), a shoulder rest (6), a backrest (8), a ball screw (10) and a lifting electric mechanism (11), wherein the headrest (5) is positioned at the upper part of the shoulder rest (6) and fixedly connected with one end of the shoulder rest (6), the other end of the shoulder rest (6) is connected with one end of a shoulder belt tensioning mechanism (2), and the other two ends of the shoulder belt tensioning mechanism (2) are respectively and fixedly connected with the ejection cylinders (3) which are bilaterally symmetrical, so that the ejection cylinder (3), the headrest (5), the shoulder rest (6) and the shoulder belt tensioning mechanism (2) are fixed and fixed, and back support protection is provided for a pilot; the backrest (8) is installed on the chair basin (4), the shoulder strap tensioning mechanism (2) is connected with the ball screw (10), the lifting electric mechanism (11) is driven by the direct-current motor, the chair basin (4) is adjusted to lift through a button, the ball screw is driven to rotate through the speed reducer, the ball screw (10) is made to do linear motion, the chair basin (4) is driven to slide up and down along the ejection cylinder (3), the adjustment of the height of the backrest (8) installed on the chair basin (4) is achieved, and therefore pilots with different heights can adapt to respective eye positions.

2. A comfort structure for catapult seats according to claim 1, characterized in that a four-way lumbar support system (7) is mounted behind the backrest (8), the four-way lumbar support system (7) being adjusted in four directions to provide lumbar support protection for different types of pilots.

3. A comfort structure for ejection seats according to claim 1, characterized in that the backrest (8) is also fitted with a seat cushion (9).

4. A comfort structure for ejection seats according to claim 1, characterized in that it further comprises an ejection cylinder sector (1), said headrest (5) being connected to said ejection cylinders (3) on both sides by means of the ejection cylinder sector (1).

5. The comfort structure for ejection seats according to claim 1, characterized in that said headrest (5) comprises a head cover and a head core, the head core is made of polyurethane foam, the head cover is made of foam carbon fiber fabric, and the head core is sewn in a covering manner.

6. A comfort structure for a catapult chair as claimed in claim 1, characterized in that the shoulder rest (6) comprises a shoulder sleeve and a shoulder core, the shoulder core is polyurethane foam, the shoulder sleeve is foam carbon fiber fabric, and the shoulder core is sewn in a covering manner.

7. A comfort structure for a catapult seat according to claim 1, characterized in that the cushion (9) comprises a seat cover and a seat core, the seat core is made of polyurethane foam, the seat cover is made of foam carbon fiber fabric, and the seat core is sewn in a covering manner.

8. The comfort structure for a pop-up seat as claimed in claim 5, wherein the head covering is provided with a fire-resistant outer covering.

9. A comfort structure for a catapult seat according to claim 6, characterized in that the shoulder sleeve is provided with a fire-resistant outer sleeve.

10. The comfort structure for a catapult seat as claimed in claim 7, wherein a fire-resistant outer cover is provided outside the seat cover.