Restraint system for preventing upper limbs from being swung and beaten under action of airflow
By using a restraining system of elbow guards and artificial muscle filaments on the ejection seat, flexible exoskeleton technology is used to actively restrain the upper limbs, solving the problem of upper limb swing in the existing technology, and achieving a lightweight and easy-to-operate upper limb protection effect.
Patent Information
- Application Number
- CN202420895234.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-26
- Publication Date
- 2024-12-17
- Estimated Expiration
- 2034-04-26
AI Technical Summary
The upper limb protection device on the existing ejection seat has a large volume and weight or the pilot is unwilling to use it, especially the protective effect of the passive restraint device to be evaluated, and the active restraint device is limited by the pilot's acceptance.
Using a constraint system including elbow guards, wires, central pull loops, upper joints, lower joints, power supply and stroke switches, the artificial muscle wire generates a tensioning force under the action of current, actively restrains the upper limbs, and uses flexible exoskeleton technology to After the pilot starts the central pull loop, the current activates the artificial muscle wire on the elbow guard to provide constraints against high-speed airflow.
It achieves the small weight, easy operation, and minimizes the impact while preventing the pilot's upper limbs from being swung. It is suitable for any seats and clothing, providing effective upper limb protection.
Smart Images
Figure CN222179838U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of ejection lifesaving, and more specifically relates to a restraint system for preventing upper limbs from being whipped under the action of airflow. Background Art
[0002] Ejection seats are emergency life-saving devices commonly equipped in modern military aircraft. After the ejection is initiated, the pilot will face the impact of high-speed airflow after leaving the cabin, which may cause the upper limbs to be swung and cause injuries. With the development of ejection life-saving technology, in order to solve the problem of upper limb swaying, upper limb protection devices have been added to subsequent ejection seats, such as the arm limiter used in China and Russia, the arm limiter belt used in the United Kingdom, and the arm limiter net used in the United States. Among them, the arm limiter and the arm limiter net are passive restraints. The disadvantage is that the device is large in size and weight, and the protective effect needs to be evaluated. The arm limiter belt is an active restraint, and the disadvantage is that pilots are reluctant to use it. Utility Model Content
[0003] The utility model aims to provide a restraint system for preventing the upper limbs from being swung by airflow, which can prevent the upper limbs from being swung by airflow during high-speed ejection for life-saving, and has light volume and weight.
[0004] Technical solution of the utility model: A restraint system for preventing upper limbs from being whipped under the action of airflow, comprising an elbow guard, a wire, a central pull ring, an upper joint, a lower joint, a power supply, an ejection seat basin and a travel switch, wherein both ends of the elbow guard are electrically connected to the upper joint through a wire; the lower joint is fixedly connected to the ejection seat basin, and the lower joint is electrically connected to the power supply; one end of the central pull ring is a free end, and the other end is provided with a toggle travel switch structure, the upper joint is electrically connected to the lower joint, and when the pilot pulls the central pull ring, the travel switch is turned on and energized, so that the artificial muscle filaments arranged on the elbow guard contract under the action of the electric current to generate tension, thereby providing restraint for the pilot's forearm and upper arm.
[0005] In the above scheme, the upper joint and the lower joint are plug-in joints. When the pilot separates himself from the seat, the pilot and the ejection seat produce relative displacement, the upper joint and the lower joint separate, the circuit is disconnected and the power is stopped, the artificial muscle on the elbow pad loses its tension, and the pilot's upper limbs return to normal.
[0006] In the above scheme, the elbow pad has artificial muscle fabric on the inner side of the arm.
[0007] In the above scheme, the ejection seat basin is provided with a travel switch, and the travel switch is located directly below the central pull ring.
[0008] The advantages and beneficial effects of the utility model are as follows: The upper limb restraint system provided by the utility model patent utilizes flexible exoskeleton technology to attach a special restraint system to the pilot's upper limbs, which does not affect the pilot's movements at ordinary times. Once the ejection state is entered, the pilot activates the central pull ring with both hands and turns on the power. Under the action of the current, the artificial muscles in the flexible exoskeleton generate force in a specific direction. This force is used to counteract the aerodynamic force generated by high-speed airflow on the upper limbs, solve the problem of the upper limbs being whipped under the action of airflow, and protect the pilot's upper limbs. The utility model is easy to operate, small in size and weight, and uses active restraint to minimize the impact on the pilot. Modification is very convenient and can be performed on any seat or clothing. BRIEF DESCRIPTION OF THE DRAWINGS
[0009] Figure 1 The utility model is a schematic diagram of the connection of the elbow pad wearing and the circuit.
[0010] Figure 2 It is a schematic diagram of the position relationship between the travel switch and the pull ring of the utility model.
[0011] Figure 3 yes Figure 2 A partial cross-sectional view of .
[0012] In the figure, 1-elbow pad, 2-wire, 3-central pull ring, 4-upper connector, 5-lower connector, 6-power supply, 7-ejection seat basin, 8-travel switch. DETAILED DESCRIPTION
[0013] In order to better understand the present invention, the present invention is further described below through the accompanying drawings and examples.
[0014] Figure 1 Shown is a schematic diagram and position of the pilot wearing the elbow pad 1. Wires 2 are led out from both ends of the elbow pad 1. Go in a specific direction inside the garment and wear out of the garment, the right side is the same as the left side, where the wire 2 is connected to the wire on the left side at a specific position, sharing an upper connector 4 of a plug-in connector. After the pilot gets on the plane, the connection with the lower connector 5 fixed on the seat basin is completed. There are installation positions for the lower connector 5 and the power supply 6 on the ejection seat seat basin 7. The remaining circuit wires are also arranged on the seat basin. The wires at the rear end of the lower connector 5 are arranged on the seat basin. The travel switch 8 controls the on and off, and is arranged in the seat basin near the central pull ring 3;
[0015] Figure 2 The schematic diagram of the travel switch 8 and the circuit is shown. The travel switch 8 is installed near the lower end of the seat basin near the central pull ring 3. When the pilot ejects and pulls the central pull ring 3, the structure on the central pull ring toggles the travel switch 8, causing the entire circuit to be turned on. The artificial muscle wire on the elbow pad 1 contracts under the action of the current to generate tension, so that the pilot's forearm and upper arm are under the action of tension.
[0016] When in use, the pilot puts on the elbow pad and adjusts the elbow pad so that the artificial muscle is on the inside. The wires at both ends and the upper joint of the connecting joint pass through the special part of the clothing. The wires arranged on the seat and the lower joint of the connecting joint form a loop, and the pilot completes the connection between the upper joint and the relatively fixed lower joint of the seat by himself. The elbow pad 1 is a fabric with artificial muscles on the inner side of the arm. If it is worn in the correct way, it will generate tension after power is turned on, making it difficult for the upper arm and forearm to abduct. There is an elbow pad 1 for each left and right arm, and the schematic diagram of artificial muscles only shows the elbow pad on the left side; the wire 2 is a channel for connecting the current, wherein the wire 2 can be arranged along a specific direction inside the clothing, and the wires on the left and right sides can be combined to open a hole in the clothing and extend to the outside. The length of the wire direction is sufficient and will not hinder the pilot's activities; when the ejection is started, the central pull ring 3 moves upward, and its structure touches the travel switch 8, causing the journey switch 8 to connect the circuit, and the elbow pad 1 works under the action of the current; after the pilot gets on the plane, the upper joint 4 and the lower joint 5 are connected by themselves. When the pilot separates the person from the chair, the pilot and the ejection seat produce relative displacement, the relative displacement of the person and the chair increases, the upper joint 4 and the lower joint 5 are separated, the circuit is disconnected, the power is stopped, the artificial muscle loses tension, and the pilot's upper limbs return to normal.
[0017] The above technical solutions are only preferred embodiments of the present application, and certainly cannot be used to limit the scope of rights of the present application. Therefore, equivalent changes made within the scope of the patent of the present application still fall within the protection scope of the present application.
Claims
1. A restraint system for preventing upper limbs from being whipped by airflow, comprising an elbow pad (1), a wire (2), a central pull ring (3), an upper joint (4) and a lower joint (5), a power supply (6), an ejection seat basin (7) and a travel switch (8), characterized in that: The two ends of the elbow guard (1) are electrically connected to the upper joint (4) through the wire (2); the lower joint (5) is fixedly connected to the ejection seat basin (7), and the lower joint (5) is electrically connected to the power supply (6); one end of the central pull ring (3) is a free end, and the other end is provided with a toggle travel switch (8) structure, and the upper joint (4) is electrically connected to the lower joint (5). When the pilot pulls the central pull ring (3), the travel switch (8) is turned on and energized, so that the artificial muscle wire arranged on the elbow guard (1) contracts under the action of the current to generate tension, thereby providing constraints for the pilot's forearm and upper arm.
2. A restraint system for preventing upper limbs from flapping under the action of airflow according to claim 1, characterized in that: The upper joint (4) and the lower joint (5) are plug-in joints. When the pilot separates himself from the ejection seat, the pilot and the ejection seat are relatively displaced, the upper joint (4) and the lower joint (5) are separated, the circuit is disconnected and the power is stopped, the artificial muscle on the elbow pad (1) loses its tension, and the pilot's upper limbs return to normal.
3. A restraint system for preventing upper limbs from flapping under the action of airflow according to claim 1, characterized in that: The elbow pad (1) has artificial muscle fabric on the inner side of the arm.
4. A restraint system for preventing upper limbs from flapping under the action of airflow according to claim 1, characterized in that: The ejection seat basin (7) is provided with a travel switch (8), and the travel switch (8) is located directly below the central pull ring (3).