Cover plate unlocking device of escape parachute box

Abstract

The utility model discloses a cover plate unlocking device of an escape parachute box, and relates to the field of airborne landing. The cover plate unlocking device of the escape parachute box comprises an L-shaped fixed handle and an L-shaped movable handle. The fixed handle comprises a fixed holding part and a fixed abutting part which are connected in sequence. The movable handle comprises a movable holding part and a movable pressing part which are connected in sequence, and the joint of the movable holding part and the movable pressing part is hinged to the fixed holding part; when the movable holding part rotates in the direction close to or away from the fixed holding part, the movable abutting part rotates in the direction close to or away from the fixed abutting part so as to push or stop pushing the pair of limiting pins which are coaxially arranged at intervals to move in the direction close to each other. The cover plate unlocking device of the escape parachute box has the advantages of being capable of being operated by one person, convenient to use, stable, reliable and not prone to damaging a user and equipment.

Description

Technical Field

[0001] The present application relates to the field of airborne operations, and in particular to a cover unlocker for a life-saving parachute box. Background Art

[0002] The parachute box is a crucial component of an aircraft ejection seat, effectively housing and sealing the parachute for use after ejection. After ground maintenance and the parachute's sealing, the front and rear covers of the box must be released and closed to facilitate subsequent work.

[0003] like Figure 1 As shown, the front cover plate 110 and the rear cover plate 120 of the existing life-saving parachute box 100 are connected to two coaxially spaced limit pins 140 that can move toward or away from each other through a pair of fixing seats 130 to unlock and lock the corresponding cover plates, and two springs are used to limit the two limit pins 140 to a locked state arranged in a direction away from each other. The unlocking of this locking structure is relatively troublesome. At present, it can only be completed by using tools such as pliers and flat-blade screwdrivers to assist in pushing the two limit pins 140 to overcome the spring force and move axially toward each other. Unlocking with existing unlocking tools is not only time-consuming and labor-intensive, but also cannot be completed by one person. Improper operation may even cause damage to the operator and the parachute box assembly. Utility Model Content

[0004] The purpose of the present application is to provide a cover unlocker for a life-saving parachute box, which has the advantages of being single-person operable, easy to use, stable and reliable, and not prone to damaging users and equipment.

[0005] This application is implemented as follows:

[0006] The present application provides a cover unlocker for a life-saving parachute box, which includes:

[0007] An L-shaped fixed handle comprising a fixed gripping portion and a fixed pressing portion connected in sequence;

[0008] The L-shaped movable handle comprises a movable gripping portion and a movable pressing portion connected in sequence, wherein the connection between the movable gripping portion and the movable pressing portion is hinged to the fixed gripping portion;

[0009] When the movable gripping portion rotates toward or away from the fixed gripping portion, the movable pressing portion rotates toward or away from the fixed pressing portion to push or stop pushing a pair of coaxially spaced limiting pins to move toward each other.

[0010] In some optional embodiments, one end of the fixed pressing portion away from the fixed gripping portion is connected to a fixed pressing head for pressing the limiting pin.

[0011] In some optional implementation schemes, a fixing groove is provided on the fixed pressing head, and when the movable gripping portion rotates in a direction away from the fixed gripping portion, the fixing groove engages and defines the position of the movable gripping portion.

[0012] In some optional embodiments, a buffer pad made of elastic material is provided in the fixing groove.

[0013] In some optional embodiments, one end of the movable pressing portion away from the movable gripping portion is connected to a movable pressing head for pressing the limiting pin.

[0014] In some optional embodiments, a telescopic hole is provided on the end face of the movable gripping portion away from the fixed gripping portion, and a clamping column that can move along the telescopic hole is provided in the telescopic hole. A spring is connected between the clamping column and the inner wall of the telescopic hole. When the movable gripping portion is rotated toward the fixed gripping portion until the two are arranged in parallel, the clamping column compresses the spring and presses it against the fixed pressing portion.

[0015] In some optional embodiments, an adjustment hole connected to the telescopic hole is opened on the outer wall of the movable gripping portion, and the clamping column is connected to a slider that passes through the adjustment hole and extends out of the movable gripping portion. When the slider moves along the adjustment hole, it drives the clamping column to move along the telescopic hole.

[0016] In some optional implementation schemes, a positioning groove is provided on the fixed pressing portion; when the movable gripping portion is rotated toward the fixed gripping portion until the two are arranged parallel, the clamping column is clamped in the positioning groove.

[0017] In some optional embodiments, the end surface of the movable gripping portion away from the movable pressing portion is raised to form a snap-fitting convex button. When the movable gripping portion is rotated toward the fixed gripping portion until the two are arranged parallel, the snap-fitting convex button presses against the fixed pressing portion.

[0018] The beneficial effect of the present application is that the cover unlocker of the life-saving parachute box provided by the present application can help the operator to hold the fixed handle and one end of the movable handle and rotate the fixed handle and one end of the movable handle toward each other, by providing an L-shaped fixed handle and an L-shaped movable handle with the middle hinged to one end of the fixed handle, so that the other end of the fixed handle and the movable handle push a pair of coaxially spaced limit pins to move toward each other to achieve the unlocking of the cover of the life-saving parachute box. It has the advantages of being able to be operated by one person, easy to use, stable and reliable, and not prone to damage to users and equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without creative work.

[0020] Figure 1 This is a schematic diagram of the structure in which the front cover and the rear cover of a life-saving parachute box in the prior art are locked by limit pins provided on a pair of fixing seats;

[0021] Figure 2 A schematic structural diagram of the cover unlocker of the life-saving parachute box provided in Example 1 of the present application;

[0022] Figure 3 A schematic structural diagram of a first state in which the cover unlocker of the life-saving parachute box provided in Example 1 of the present application unlocks the front cover;

[0023] Figure 4 A schematic structural diagram of a second state in which the cover unlocker of the life-saving parachute box provided in Example 1 of the present application unlocks the front cover;

[0024] Figure 5 A partial perspective structural diagram of a cover unlocker for a life-saving parachute box provided in Example 2 of the present application;

[0025] Figure 6 A partial perspective structural diagram of a cover unlocker for a life-saving parachute box provided in Example 3 of the present application;

[0026] Figure 7 A partial perspective structural diagram of the cover unlocker of the life-saving parachute box provided in Example 4 of the present application.

[0027] In the figure: 100, life-saving parachute box; 110, front cover; 120, rear cover; 130, fixing seat; 140, limit pin; 200, fixed handle; 210, fixed gripping part; 220, fixed pressing part; 230, fixed pressing head; 240, fixing groove; 250, buffer pad; 260, positioning groove; 300, movable handle; 310, movable gripping part; 320, movable pressing part; 330, movable pressing head; 340, telescopic hole; 350, clamping column; 360, spring; 370, adjusting hole; 380, slider; 390, snap-on button. DETAILED DESCRIPTION

[0028] To make the objectives, technical solutions, and advantages of the embodiments of the present application more clear, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Generally, the components of the embodiments of the present application described and shown in the drawings herein can be arranged and designed in various different configurations.

[0029] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for protection, but merely represents selected embodiments of the present application. All other embodiments obtained by persons of ordinary skill in the art based on the embodiments in the present application without creative work are within the scope of protection of the present application.

[0030] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0031] In the description of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the product of this application is typically placed when in use. These terms are intended only to facilitate the description of this application and simplify the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, the terms "first," "second," "third," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0032] Furthermore, terms such as "horizontal," "vertical," and "overhanging" do not necessarily imply that a component must be absolutely horizontal or overhanging, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but rather that it can be slightly tilted.

[0033] It should also be noted that, in the description of this application, unless otherwise expressly specified or limited, the terms "disposed," "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0034] In this application, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature includes the first feature being directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0035] The features and performance of the cover unlocker of the life-saving parachute box of the present application are further described in detail below in conjunction with the embodiments.

[0036] Example 1

[0037] like Figure 2 、 Figure 3 and Figure 4 As shown, the embodiment of the present application provides a cover unlocker for a life-saving parachute box, which includes an L-shaped fixed handle 200 and an L-shaped movable handle 300. The fixed handle 200 includes a fixed gripping portion 210 and a fixed pressing portion 220 connected in sequence. The end of the fixed pressing portion 220 away from the fixed gripping portion 210 is connected to an L-shaped fixed pressing head 230 for pressing the limit pin 140; the movable handle 300 includes a movable gripping portion 310 and a movable pressing portion 320 connected in sequence. The end of the movable pressing portion 320 away from the movable gripping portion 310 is connected to There is an L-shaped movable pressing head 330 for pressing the limit pin 140. The connection between the movable gripping part 310 and the movable pressing part 320 is hinged to the fixed gripping part 210. The end surface of the movable gripping part 310 away from the movable pressing part 320 is raised to form a snap-fitting convex button 390. When the movable gripping part 310 rotates toward or away from the fixed gripping part 210, the movable pressing head 330 rotates toward or away from the fixed pressing head 230 to push or stop pushing a pair of coaxially spaced limit pins 140 to move toward each other.

[0038] The working principle of the cover unlocker of the life-saving parachute box provided in the embodiment of the present application is as follows: taking the unlocking of the front cover 110 of the life-saving parachute box 100 as an example, when the front cover 110 is in a locked state after being opened, a pair of limit pins 140 on the front cover 110 are arranged in a direction away from each other to lock the front cover 110, resulting in the front cover 110 being unable to restore to a closed state. At this time, the operator can hold the fixed gripping portion 210 of the fixed handle 200 with one hand and loosely hold the movable gripping portion 310 of the movable handle 300, and then press the fixed pressing head 230 of the fixed handle 200 against a step edge of a limit pin 140, and then the operator can firmly grip the movable gripping portion 310 of the movable handle 300 to move the movable gripping portion 310 closer to the fixed The gripping portion 210 is rotated in the direction of rotation, causing the movable pressure head 330 to rotate toward the fixed pressure head 230 so as to use the movable pressure head 330 and the fixed pressure head 230 to push the step edges of the two coaxially spaced limit pins 140 to move toward each other, so that the two limit pins 140 overcome the elastic force of the corresponding springs and move along the fixed seat 130 toward each other to unlock the front cover 110. The staff can rotate the front cover 110 to close the life-saving parachute box 100, and then release the movable gripping portion 310. The two limit pins 140 are respectively subjected to the compression elastic force of the corresponding springs to move toward each other, reset and lock the front cover 110, and cause the limit pin 140 to push the movable pressure head 330 to rotate in the direction away from the fixed pressure head 230.

[0039] The movable gripping portion 310 is raised on one end surface away from the movable pressing portion 320 to form a snap-fitting convex button 390. When the movable gripping portion 310 is rotated toward the fixed gripping portion 210 until the movable gripping portion 310 and the fixed gripping portion 210 are arranged in parallel, the snap-fitting convex button 390 is pressed and fixed on the fixed pressing portion 220 to elastically connect and fix the movable gripping portion 310 and the fixed gripping portion 210, thereby keeping the movable pressing head 330 and the fixed pressing head 230 pushing the step edges of the two coaxially spaced limit pins 140 to move toward each other and be in an unlocked state.

[0040] The cover unlocker of the life-saving parachute box provided in the embodiment of the present application is based on ergonomic principles and refers to the structure and size of the human palm. It can assist maintenance personnel to complete the whole process of easily releasing the cover limit of the life-saving parachute box 100 with one hand and easily closing the cover of the life-saving parachute box 100 by one person. At the same time, combined with the force characteristics of the limit pin 140 during the opening and closing process of the life-saving parachute box 100 cover, it is ensured that the directions of the forces exerted by the two limit pins 140 on both sides of the cover of the life-saving parachute box 100 when the force is maximum are almost coaxial, thereby reducing the bending deformation of the limit pin 140 during the opening and closing process of the cover, increasing the overall service life of the life-saving parachute box 100, having high reliability and high operational safety, and being able to effectively reduce damage to the operator and the parachute box. It has the advantages of simple structure, easy operation, time-saving and labor-saving, and easy maintenance, achieving a "zero" breakthrough in the cover unlocking equipment of the life-saving parachute box 100 for the ejection seat of domestic aircraft, and greatly improving the maintenance efficiency and reliability of the ejection seat.

[0041] Example 2

[0042] like Figure 5 As shown, an embodiment of the present application provides a cover unlocker for a life-saving parachute box, which has roughly the same structure as the cover unlocker for the life-saving parachute box provided in Example 1, with the difference that, in this embodiment, a fixed groove 240 is provided on the fixed pressure head 230, and a buffer pad 250 made of elastic material is provided in the fixed groove 240; when the movable gripping portion 310 rotates in a direction away from the fixed gripping portion 210, the fixed groove 240 is engaged and limits the position of the movable gripping portion 310.

[0043] The cover unlocker of the life-saving parachute box provided in the embodiment of the present application is provided with a fixed groove 240 on the fixed pressure head 230. When the movable gripping part 310 rotates in a direction away from the fixed gripping part 210, the fixed groove 240 can engage and limit the position of the movable gripping part 310, thereby limiting and fixing the position of the movable handle 300, and utilizing the buffer pad 250 provided in the fixed groove 240 to buffer the movable gripping part 310 engaged in the fixed groove 240, thereby ensuring that the movable handle 300 is protected from impact damage.

[0044] Example 3

[0045] like Figure 6As shown, an embodiment of the present application provides a cover unlocker for a life-saving parachute box, which has roughly the same structure as the cover unlocker for the life-saving parachute box provided in Example 1, with the difference that, in this embodiment, a telescopic hole 340 is provided on the end face of the movable gripping portion 310 away from the fixed gripping portion 210, and a clamping column 350 that can move along the telescopic hole 340 is provided. A spring 360 is connected between the clamping column 350 and the inner wall of the telescopic hole 340. When the movable gripping portion 310 is rotated toward the fixed gripping portion 210 until the movable gripping portion 310 and the fixed gripping portion 210 are arranged in parallel, the clamping column 350 compresses the spring 360 and presses it against the fixed pressing portion 220.

[0046] The cover unlocker of the life-saving parachute box provided in the embodiment of the present application is provided with a telescopic hole 340 and a telescopic clamping column 350 inserted into the telescopic hole 340 on the end surface of the movable gripping portion 310 away from the fixed gripping portion 210, and the clamping column 350 is connected to the inner wall of the telescopic hole 340 through a spring 360. When the movable gripping portion 310 rotates toward the fixed gripping portion 210, the fixed pressing portion 220 presses the clamping column 350 to be inserted into the telescopic hole 340 and compresses the spring 360. When the movable gripping portion 310 and the fixed gripping portion 210 are arranged parallel to each other, the clamping column 350 is pressed against the clamping column 350. 0 is pressed and fixed on the fixed pressing portion 220, thereby locking the position of the movable handle 300. At this time, the operator can loosen the fixed handle 200 and the movable handle 300 and keep the movable gripping portion 310 and the fixed gripping portion 210 arranged in parallel, thereby keeping the movable pressing portion 320 and the fixed pressing portion 220 pushing the two limit pins 140 to unlock. However, when it is necessary to lock the two limit pins 140 to the cover of the life-saving parachute box 100 again, it is only necessary to push the movable gripping portion 310 away from the fixed gripping portion 210 to make the clamping column 350 stop pressing the fixed pressing portion 220.

[0047] Example 4

[0048] like Figure 7 As shown, an embodiment of the present application provides a cover unlocker for a life-saving parachute box, which has a structure roughly the same as that of the cover unlocker for the life-saving parachute box provided in Example 3, with the difference being that, in this embodiment, an adjustment hole 370 connected to the telescopic hole 340 is opened on the outer wall of the movable gripping portion 310, and the clamping column 350 is connected to a slider 380 that passes through the adjustment hole 370 and extends out of the movable gripping portion 310. When the slider 380 moves along the adjustment hole 370, it drives the clamping column 350 to move along the telescopic hole 340, and a positioning groove 260 is provided on the fixed pressing portion 220; when the movable gripping portion 310 rotates toward the fixed gripping portion 210 until the movable gripping portion 310 and the fixed gripping portion 210 are arranged in parallel, the clamping column 350 is clamped in the positioning groove 260.

[0049] The cover unlocker of the life-saving parachute box provided in the embodiment of the present application is provided with a positioning groove 260 on the fixed pressing portion 220. When the movable gripping portion 310 is rotated toward the fixed gripping portion 210, the fixed pressing portion 220 presses the card column 350 to be inserted into the telescopic hole 340 to compress the spring 360. When the movable gripping portion 310 and the fixed gripping portion 210 are arranged in parallel, the card column 350 is inserted into the positioning groove 260 and connected with the fixed pressing portion 220, thereby locking the position of the movable handle 300. When it is necessary to release the position lock of the movable handle 300, it is only necessary to push the slider 380 to move along the adjusting hole 370 to drive the card column 350 to move along the telescopic hole 340 to disengage the positioning groove 260 and further compress the spring 360, so as to push the movable gripping portion 310 to rotate in the direction away from the fixed gripping portion 210 to release the position lock of the movable handle 300.

[0050] The embodiments described above are part of the embodiments of the present application, rather than all of the embodiments. The detailed description of the embodiments of the present application is not intended to limit the scope of the present application for protection, but merely represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

Claims

1. A cover unlocker for a life-saving parachute box, characterized in that: It includes: An L-shaped fixed handle comprising a fixed gripping portion and a fixed pressing portion connected in sequence; An L-shaped movable handle comprises a movable gripping portion and a movable pressing portion connected in sequence, wherein the connection between the movable gripping portion and the movable pressing portion is hinged to the fixed gripping portion; When the movable gripping portion rotates toward or away from the fixed gripping portion, the movable pressing portion rotates toward or away from the fixed pressing portion to push or stop pushing a pair of coaxially spaced limiting pins to move toward each other.

2. The cover unlocker of the life-saving parachute box according to claim 1, characterized in that: One end of the fixed pressing portion away from the fixed gripping portion is connected to a fixed pressing head for pressing the limiting pin.

3. The cover unlocker of the life-saving parachute box according to claim 2, characterized in that: The fixed pressing head is provided with a fixing groove, and when the movable gripping portion rotates in a direction away from the fixed gripping portion, the fixing groove engages and limits the position of the movable gripping portion.

4. The cover unlocker of the life-saving parachute box according to claim 3, characterized in that: A buffer pad made of elastic material is arranged in the fixing groove.

5. The cover unlocker of the life-saving parachute box according to claim 1, characterized in that: One end of the movable pressing portion away from the movable gripping portion is connected to a movable pressing head for pressing the limiting pin.

6. The cover unlocker of the life-saving parachute box according to claim 1, characterized in that: A telescopic hole is provided on the end face of the movable gripping part away from the fixed gripping part, and a clamping column that can move along the telescopic hole is provided in the telescopic hole. A spring is connected between the clamping column and the inner wall of the telescopic hole. When the movable gripping part is rotated toward the direction close to the fixed gripping part until the two are arranged in parallel, the clamping column compresses the spring and presses it against the fixed pressing part.

7. The cover unlocker of the life-saving parachute box according to claim 6, characterized in that: An adjustment hole communicating with the telescopic hole is formed on the outer wall of the movable gripping portion. The clamping column is connected to a slider passing through the adjustment hole and extending out of the movable gripping portion. When the slider moves along the adjustment hole, it drives the clamping column to move along the telescopic hole.

8. The cover unlocker of the life-saving parachute box according to claim 7, characterized in that: A positioning groove is provided on the fixed pressing portion; when the movable gripping portion is rotated toward the fixed gripping portion until the two are arranged in parallel, the clamping column is clamped in the positioning groove.

9. The cover unlocker of the life-saving parachute box according to claim 1, characterized in that: The movable gripping portion has one end surface away from the movable pressing portion protruding to form a snap-fitting convex button. When the movable gripping portion rotates toward the fixed gripping portion until the two are arranged parallel, the snap-fitting convex button presses and fixes the fixed pressing portion.

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