An aircraft emergency exit slide pre-positioning mechanism

Abstract

This application belongs to the technical field of aircraft emergency door slide pre-positioning mechanism design, specifically involving an aircraft emergency door slide pre-positioning mechanism. The design establishes a connection between the handle tension cable, the slide release push-pull cable and the door handle and slide release mechanism. The switching between the pre-positioned state and the pre-positioned release state is realized by rotating the central axis. It replaces the complex mechanical linkage mechanism, has fewer parts, is lightweight, has a short force transmission path, high reliability, and good maintainability.

Description

Technical Field

[0001] This application belongs to the field of aircraft emergency door slide pre-positioning mechanism design technology, specifically relating to an aircraft emergency door slide pre-positioning mechanism. Background Technology

[0002] The aircraft is equipped with an emergency exit door and a slide. When the door is closed and the slide is in the pre-positioned position, the emergency exit door is opened from the inside and the slide is deployed. When the emergency exit door is opened from the outside, the slide is not deployed. When the slide is released from the pre-positioned position, the emergency exit door is opened from both the inside and outside, and the slide is not deployed in either case. Therefore, a pre-positioning mechanism is designed, which connects the door handle on the outside and the slide deployment mechanism.

[0003] Current positioning mechanisms are mostly complex mechanical linkage mechanisms with numerous components, large weight, long force transmission paths, low reliability, and poor maintainability.

[0004] This application is made in view of the aforementioned technical deficiencies.

[0005] It should be noted that the above background information is only used to assist in understanding the inventive concept and technical solution of this application, and it does not necessarily belong to the prior art of this patent application. In the absence of clear evidence that the above information was disclosed on the filing date of this application, the above background information should not be used to evaluate the novelty and inventiveness of this application. Summary of the Invention

[0006] The purpose of this application is to provide an aircraft emergency exit slide pre-positioning mechanism to overcome or mitigate at least one of the known technical defects.

[0007] The technical solution of this application is:

[0008] An emergency exit slide pre-positioning mechanism for an aircraft includes a front support plate, a pre-positioning handle, a rotating shaft, a handle tension cable, a transmission rocker arm, a retaining spring, a support shaft, a cam, a rear support plate, a hinged rocker arm, a slide deployment connecting cable support, a slide deployment push-pull cable, and a handle connecting cable support.

[0009] The rear support plate is connected to the inside of the emergency hatch. An outside handle is provided on the outside of the emergency hatch, and a slide deployment mechanism is provided on the inside.

[0010] The front support plate and the rear support plate are arranged opposite to each other;

[0011] The pivot is located between the front support plate and the rear support plate;

[0012] The pre-positioning handle connecting shaft extends to the end of the front support plate;

[0013] The transmission rocker arm is set between the front support plate and the rear support plate and is sleeved on the rotating shaft. It has a single lug with a groove and an arc-shaped sliding groove.

[0014] One end of the handle tension cable is connected to the handle outside the hatch, and the other end is equipped with a ball head. This end passes around the arc-shaped groove on the transmission rocker arm and is inserted into the single lug with a groove. A pin is set at the arc-shaped groove to limit the handle tension cable.

[0015] The handle connecting cable support is sleeved on the outer periphery of the handle tension cable and connected between the front support plate and the rear support plate;

[0016] One end of the slide launching and pushing cable is connected to the slide launching mechanism, and the other end is hinged to the transmission rocker arm;

[0017] The slide launching and connecting steel cable support is sleeved on the outer periphery of the slide launching and pushing steel cable, and is connected between the front support plate and the rear support plate;

[0018] The cam is bolted to the transmission rocker arm, and its cam surface has a pre-positioning groove and a pre-positioning release groove.

[0019] The hinged rocker arm is equipped with rollers and is hinged to the front support plate and the rear support plate;

[0020] The support shaft is located between the front support plate and the rear support plate;

[0021] Keep the spring connected to the support shaft and the hinged rocker arm, and rely on the elastic force to make the roller on the hinged rocker arm rest against the cam surface;

[0022] The pre-positioning handle can drive the rotating shaft to rotate, which in turn causes the transmission rocker arm and cam to rotate, thereby enabling the aircraft emergency exit slide pre-positioning mechanism to have a pre-positioning state and a pre-positioning release state.

[0023] When the aircraft emergency exit slide prepositioning mechanism is in the prepositioning state, the roller on the hinged rocker arm rolls into the prepositioning positioning groove, the handle tension cable is tightened, and the slide throwing and pushing cable pushes the slide throwing mechanism to preposition the slide.

[0024] When the aircraft emergency exit slide pre-positioning mechanism is in the pre-positioning release state, the roller on the hinged rocker arm rolls into the pre-positioning release positioning groove, the handle tension cable is released, and the slide throwing mechanism is pulled by the slide throwing push-pull cable to release the slide pre-positioning.

[0025] After the aircraft emergency exit door is closed, the aircraft emergency exit door slide pre-positioning mechanism is in the pre-positioned state. When the emergency exit door is opened from the inside, the slide is deployed. When the emergency exit door is opened from the outside, turning the door handle will drive the rotating shaft through the handle tension cable, causing the aircraft emergency exit door slide pre-positioning mechanism to change to the pre-positioned state, and the slide will not be deployed.

[0026] After the aircraft emergency exit door is closed, the aircraft emergency exit slide pre-positioning mechanism is in the pre-positioning release state, and the slide will not be deployed when the emergency exit door is opened from the inside or outside.

[0027] According to at least one embodiment of this application, in the above-described aircraft emergency exit slide pre-positioning mechanism, the transmission rocker arm and the rotating shaft are connected by a spline.

[0028] According to at least one embodiment of this application, in the above-described aircraft emergency exit slide pre-positioning mechanism, the slide throwing connecting steel cable support is connected to the front support plate and the rear support plate by a pin.

[0029] According to at least one embodiment of this application, in the above-described aircraft emergency exit slide pre-positioning mechanism, the retaining spring is connected to the support shaft and the hinged rocker arm via a hook.

[0030] According to at least one embodiment of this application, the above-mentioned aircraft emergency exit slide pre-positioning mechanism further includes a pre-positioning sensing target and a pre-positioning sensing sensor.

[0031] The pre-positioning sensing target is connected to the transmission rocker arm;

[0032] The pre-positioning sensor is connected to the inside of the emergency hatch;

[0033] When the aircraft emergency exit slide pre-positioning mechanism is in the pre-positioning state, the pre-positioning sensing target rotates to the position sensed by the pre-positioning sensing sensor.

[0034] When the pre-positioning mechanism of the aircraft emergency exit slide is in the pre-positioning release state, the pre-positioning sensing target rotates away from the sensing position of the pre-positioning sensing sensor.

[0035] This application has at least the following beneficial technical effects:

[0036] An emergency exit slide pre-positioning mechanism for aircraft is provided. It establishes a connection between the handle tension cable, the slide release push-pull cable and the door handle and slide release mechanism. The switching between the pre-positioned state and the pre-positioned release state is realized by rotating the central axis. It replaces the complex mechanical linkage mechanism, has fewer parts, is lightweight, has a short force transmission path, high reliability and good maintainability. Attached Figure Description

[0037] Figure 1 This is a schematic diagram of the pre-positioning mechanism for the aircraft emergency exit slide provided in the embodiments of this application;

[0038] Figure 2 This is an assembly diagram of the aircraft emergency exit slide pre-positioning mechanism provided in the embodiments of this application;

[0039] Figure 3 This is a schematic diagram of the aircraft emergency exit slide pre-positioning mechanism in the pre-positioned state provided in the embodiments of this application;

[0040] Figure 4This is a schematic diagram of the aircraft emergency exit slide pre-positioning mechanism in the pre-positioning release state provided in the embodiments of this application;

[0041] in:

[0042] 1-Emergency hatch; 2-Slide launching mechanism; 3-Outer handle of hatch; 4-Front support plate; 5-Pre-position handle; 6-Rotating shaft; 7-Handle tension cable; 8-Transmission rocker arm; 9-Retaining spring; 10-Support shaft; 11-Cam; 12-Pre-position sensing target; 13-Rear support plate; 14-Pre-position sensing sensor; 15-Hinged rocker arm; 16-Slide launching connecting cable support; 17-Slide launching push-pull cable; 18-Handle connecting cable support.

[0043] To better illustrate this embodiment, some parts in the accompanying drawings may be omitted, enlarged, or reduced, and do not represent the actual size of the product. Furthermore, the accompanying drawings are for illustrative purposes only and should not be construed as limiting this patent. Detailed Implementation

[0044] To make the technical solution and advantages of this application clearer, the technical solution of this application will be described in a clearer and more complete manner below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only some embodiments of this application, and are only used to explain this application, not to limit this application. It should be noted that, for ease of description, only the parts related to this application are shown in the accompanying drawings. Other related parts can be referred to the general design. In the absence of conflict, the embodiments and technical features in the embodiments of this application can be combined with each other to obtain new embodiments.

[0045] Furthermore, unless otherwise defined, the technical or scientific terms used in this application description shall have the ordinary meaning understood by one of ordinary skill in the art to which this application pertains. The terms "upper," "lower," "left," "right," "center," "vertical," "horizontal," "inner," and "outer," etc., used in this application description to indicate relative direction or positional relationship are used only to indicate relative orientation or positional relationship, and do not imply that the device or component must have a specific orientation, or be constructed and operated in a specific orientation. When the absolute position of the described object changes, its relative positional relationship may also change accordingly, and therefore should not be construed as a limitation on this application. The terms "first," "second," "third," and similar terms used in this application description are used only for descriptive purposes to distinguish different components, and should not be construed as indicating or implying relative importance. The terms "a," "one," or "the," etc., used in this application description should not be construed as an absolute limitation on quantity, but should be construed as indicating the existence of at least one. The terms "including," "comprising," etc., used in this application description mean that the element or object preceding the word covers the element or object listed after the word and its equivalents, without excluding other elements or objects.

[0046] Furthermore, it should be noted that, unless otherwise explicitly specified and limited, terms such as “installation,” “connection,” and “linkage” used in the description of this application should be interpreted broadly. For example, a connection can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; or it can be a connection within two components. Those skilled in the art can understand its specific meaning in this application according to the specific circumstances.

[0047] The following is in conjunction with the appendix Figures 1 to 4 This application will be described in further detail.

[0048] An emergency exit slide pre-positioning mechanism for an aircraft includes a front support plate 4, a pre-positioning handle 5, a rotating shaft 6, a handle tension cable 7, a transmission rocker arm 8, a retaining spring 9, a support shaft 10, a cam 11, a pre-positioning sensing target 12, a rear support plate 13, a pre-positioning sensing sensor 14, a hinged rocker arm 15, a slide deployment connecting cable support 16, a slide deployment push-pull cable 17, and a handle connecting cable support 18. Figures 1-2 As shown.

[0049] The rear support plate 13 is bolted to the inside of the emergency hatch 1. An external handle 3 is provided on the outside of the emergency hatch 1, and a slide throwing mechanism 2 is provided on the inside.

[0050] The front support plate 4 and the rear support plate 13 are arranged opposite to each other and can be bolted together.

[0051] The pivot 6 is located between the front support plate 4 and the rear support plate 13, and uses the shoulder to position the front support plate 4 and the rear support plate 13, extending to the outside of the front support plate 4.

[0052] The pre-positioning handle 5 is connected to the rotating shaft 6, which extends to the outside of the front support plate 4.

[0053] The transmission rocker arm 8 is located between the front support plate 4 and the rear support plate 13, and is sleeved on the rotating shaft 6. It is connected to the rotating shaft 6 by a spline and has a single lug with a groove and an arc-shaped sliding groove.

[0054] One end of the handle tension cable 7 is connected to the handle 3 outside the hatch, and the other end is equipped with a ball head. This end passes around the arc-shaped groove on the transmission rocker arm 8 and is inserted into the single lug with a groove. A pin is set at the arc-shaped groove to limit the handle tension cable 7.

[0055] The handle connecting cable support 18 is sleeved on the outer periphery of the handle tension cable 7, and is set between the front support plate 4 and the rear support plate 13. It is connected to the front support plate 4 and the rear support plate 13 by bolts through the connecting edge.

[0056] One end of the slide launching and pushing steel cable 17 is connected to the slide launching mechanism 2, and the other end is hinged to the transmission rocker arm 8 through a single and double ear structure using a pin.

[0057] The slide launching and connecting steel cable support 16 is sleeved on the outer periphery of the slide launching and pushing steel cable 17, and is set between the front support plate 4 and the rear support plate 13. It is connected to the front support plate 4 and the rear support plate 13 by a pin.

[0058] The cam 11 is bolted to the transmission rocker arm 8, and its cam surface has a pre-positioning groove and a pre-positioning release groove.

[0059] The hinged rocker arm 15 is equipped with rollers, which are located between the front support plate 4 and the rear support plate 13, and are connected to the front support plate 4 and the rear support plate 13 by a pin.

[0060] The support shaft 10 is located between the front support plate 4 and the rear support plate 13, and is connected to the front support plate 4 and the rear support plate 13 by a pin.

[0061] The retaining spring 9 is connected to the support shaft 10 and the hinged rocker arm 15 by a hook. The elastic force makes the roller on the hinged rocker arm 15 press against the cam surface of the cam 11.

[0062] The pre-positioning sensing target 12 is bolted to the transmission rocker arm 8.

[0063] The prepositioning sensor 14 is bolted to the inside of the emergency hatch 1 via a support.

[0064] In the aircraft emergency exit slide pre-positioning mechanism disclosed in the above embodiments, the pre-positioning handle 5 can drive the rotating shaft 6 to rotate, thereby causing the transmission rocker arm 8, cam 11, and pre-positioning sensing target 12 to rotate, so that the aircraft emergency exit slide pre-positioning mechanism has a pre-positioning state and a pre-positioning release state.

[0065] Rotating the pre-positioning handle 5 clockwise causes the rotating shaft 6 to rotate clockwise, resulting in the rotation of the transmission rocker arm 8, cam 11, and pre-positioning sensor target 12. This causes the roller on the hinged rocker arm 15 to roll into the pre-positioning groove on the cam surface. The pre-positioning sensor target 12 rotates to the sensing position of the pre-positioning sensor 14, tightening the handle tension cable 7. This tension cable 17 then pushes the slide deployment mechanism 2, pre-positioning the slide. The aircraft emergency exit slide pre-positioning mechanism is now in the pre-positioned state. Figure 3 As shown.

[0066] Rotating the pre-positioning handle 5 counterclockwise causes the rotating shaft 6 to rotate counterclockwise, resulting in the rotation of the transmission rocker arm 8, cam 11, and pre-positioning sensor target 12. This causes the roller on the hinged rocker arm 15 to roll into the pre-positioning release positioning groove on the cam surface. The pre-positioning sensor target 12 rotates away from the sensing position of the pre-positioning sensor 14, causing the handle tension cable 7 to release. This releases the slide deployment mechanism 2 via the slide deployment push-pull cable 17, releasing the slide pre-positioning. The aircraft emergency exit slide pre-positioning mechanism is now in the pre-positioning release state. Figure 4 As shown.

[0067] After the emergency exit door 1 is closed, the emergency exit slide pre-positioning mechanism is in the pre-positioned state. When the emergency exit door 1 is opened from the inside, the slide is deployed. When the emergency exit door 1 is opened from the outside, the door handle 3 is turned, which drives the rotating shaft 6 to rotate counterclockwise via the handle tension cable 7. This causes the transmission rocker arm 8, cam 11, and pre-positioning sensor target 12 to rotate counterclockwise, causing the roller on the hinged rocker arm 15 to roll into the pre-positioning release positioning groove on the cam surface. The pre-positioning sensor target 12 rotates away from the sensing position of the pre-positioning sensor 14, causing the handle tension cable 7 to loosen. The slide deployment push-pull cable 17 pulls the slide deployment mechanism 2, releasing the slide pre-positioning. The emergency exit slide pre-positioning mechanism switches to the pre-positioning release state, and the slide is not deployed.

[0068] After the aircraft emergency exit door 1 is closed, the aircraft emergency exit slide pre-positioning mechanism is in the pre-positioning release state. When the emergency exit door 1 is opened from the inside or outside, the slide will not be deployed.

[0069] The aircraft emergency hatch slide pre-positioning mechanism disclosed in the above embodiments establishes a connection with the hatch door handle 3 and slide throwing mechanism 2 through the handle tension cable 7, slide throwing push-pull cable 17, and the central rotation of the pivot 6 to achieve switching between the pre-positioning state and the pre-positioning release state. It replaces the complex mechanical linkage mechanism, has fewer parts, is lighter, has a shorter force transmission path, higher reliability, and better maintainability.

[0070] The technical solution of this application has been described in conjunction with the preferred embodiments shown in the accompanying drawings. Those skilled in the art should understand that the scope of protection of this application is obviously not limited to these specific embodiments. Without departing from the principles of this application, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will all fall within the scope of protection of this application.

Claims

1. A pre-positioning mechanism for an aircraft emergency exit slide, characterized in that, Includes front support plate (4), pre-position handle (5), rotating shaft (6), handle tension cable (7), transmission rocker arm (8), retaining spring (9), support shaft (10), cam (11), rear support plate (13), hinged rocker arm (15), slide throwing connection cable support (16), slide throwing push-pull cable (17), and handle connection cable support (18). The rear support plate (13) is connected to the inside of the emergency hatch (1). The emergency hatch (1) has an outer handle (3) on the outside and a slide throwing mechanism (2) on the inside. The front support plate (4) and the rear support plate (13) are arranged opposite to each other; The pivot (6) is located between the front support plate (4) and the rear support plate (13); The prepositioning handle (5) is connected to the rotating shaft (6) which extends to the end of the front support plate (4) on the outside; The transmission rocker arm (8) is set between the front support plate (4) and the rear support plate (13), and is sleeved on the rotating shaft (6). It has a single lug with a groove and an arc-shaped sliding groove. One end of the handle tension cable (7) is connected to the handle (3) outside the hatch, and the other end is equipped with a ball head. This end passes around the arc-shaped groove on the transmission rocker arm (8) and is inserted into the single ear plate with a groove. A pin is set at the arc-shaped groove to limit the handle tension cable (7). The handle connecting cable support (18) is sleeved on the outer periphery of the handle tension cable (7) and connected between the front support plate (4) and the rear support plate (13); One end of the slide throwing and pushing steel cable (17) is connected to the slide throwing mechanism (2), and the other end is hinged to the transmission rocker arm (8); The slide launching connecting steel cable support (16) is sleeved on the outer periphery of the slide launching push-pull steel cable (17) and connected between the front support plate (4) and the rear support plate (13); The cam (11) is bolted to the transmission rocker arm (8), and its cam surface has a pre-positioning groove and a pre-positioning release groove; The hinged rocker arm (15) is equipped with rollers and is hinged to the front support plate (4) and the rear support plate (13); The support shaft (10) is located between the front support plate (4) and the rear support plate (13); The spring (9) is connected to the support shaft (10) and the hinged rocker arm (15). The elastic force makes the roller on the hinged rocker arm (15) press against the cam surface. The pre-positioning handle (5) can drive the rotating shaft (6) to rotate, thereby causing the transmission rocker arm (8) and cam (11) to rotate, so that the aircraft emergency door slide pre-positioning mechanism has a pre-positioning state and a pre-positioning release state. When the aircraft emergency exit slide prepositioning mechanism is in the prepositioning state, the roller on the hinged rocker arm (15) rolls into the prepositioning positioning groove, the handle tension cable (7) is tightened, and the slide throwing push-pull cable (17) pushes the slide throwing mechanism (2) to preposition the slide; When the aircraft emergency exit slide prepositioning mechanism is in the prepositioning release state, the roller on the hinged rocker arm (15) rolls into the prepositioning release positioning groove, the handle tension cable (7) is released, and the slide throwing mechanism (2) is pulled by the slide throwing push-pull cable (17) to release the slide prepositioning; After the emergency exit door (1) is closed, the emergency exit slide pre-positioning mechanism is set to the pre-positioned state. When the emergency exit door (1) is opened from the inside, the slide is deployed. When the emergency exit door (1) is opened from the outside and the door handle (3) is turned, the handle tension cable (7) will drive the rotating shaft (6) to rotate, so that the emergency exit slide pre-positioning mechanism is changed to the pre-positioned state and the slide is not deployed. After the aircraft emergency door (1) is closed, the aircraft emergency door slide pre-positioning mechanism is in the pre-positioning release state. When the emergency door (1) is opened from the inside or outside, the slide is not thrown out.

2. The aircraft emergency exit slide pre-positioning mechanism according to claim 1, characterized in that, The transmission rocker arm (8) and the rotating shaft (6) are connected by a spline.

3. The aircraft emergency exit slide pre-positioning mechanism according to claim 1, characterized in that, The slide throwing connection cable support (16) is connected to the front support plate (4) and the rear support plate (13) by a pin.

4. The aircraft emergency exit slide pre-positioning mechanism according to claim 1, characterized in that, The retaining spring (9) is connected to the support shaft (10) and the hinged rocker arm (15) by a hook.

5. The aircraft emergency exit slide pre-positioning mechanism according to claim 1, characterized in that, It also includes a pre-positioning sensing target (12) and a pre-positioning sensing sensor (14). The pre-positioning sensing target (12) is connected to the transmission rocker arm (8); The pre-positioning sensor (14) is connected to the inside of the emergency hatch (1); When the aircraft emergency exit slide prepositioning mechanism is in the prepositioning state, the prepositioning sensing target (12) rotates to the sensing position of the prepositioning sensing sensor (14); When the aircraft emergency exit slide prepositioning mechanism is in the prepositioning release state, the prepositioning sensing target (12) rotates away from the sensing position of the prepositioning sensing sensor (14).

Images