Locking structure and reverse thrust device

Abstract

The utility model provides a locking structure and reverse thrust device for a mobile outer cover. The locking structure includes: a locking mechanism for locking or unlocking the mobile outer cover; an operating member connected to the locking mechanism in a transmission manner; and a driving member that can selectively drive the operating member through magnetic force; wherein the locking mechanism has a locking position and an unlocking position; in the locked state, the locking mechanism is located in the locking position, and the mobile outer cover is locked by the locking mechanism; in the unlocked state, the operating member is actuated under the action of the magnetic force generated by the driving member so that the locking mechanism is located in the unlocking position, whereby the mobile outer cover can move relative to the locking mechanism. The above-mentioned locking structure has a simple layout and saves space and weight.

Description

Technical Field

[0001] The utility model relates to the technical field of aviation aircraft, in particular to a locking structure and a reverse thrust device. Background Art

[0002] The thrust reverser is used to generate reverse thrust when the aircraft lands or aborts takeoff. When the thrust reverser is deployed, the outer cover moves backward and the outer airflow is ejected in the opposite direction to generate reverse thrust to slow down the aircraft.

[0003] Since the thrust reverser is not allowed to be deployed in the air, in order to prevent the thrust reverser mobile cover from moving uninstructed in the air, a mobile cover lock is required to lock the mobile cover.

[0004] However, most of the current reverse thrust devices are hydraulic reverse thrust, and many of the mobile outer cover locks used are of actuator type. Unlocking the lock requires not only power but also hydraulic source. The use of hydraulics requires the layout of oil inlet and return pipes in the lock beam, which increases the weight of the reverse thrust, and the structure is complicated, increasing maintenance costs. Utility Model Content

[0005] The utility model aims to provide a locking structure and a reverse thrust device, which do not need to introduce a hydraulic structure, thus making the structural layout simple and saving space and weight.

[0006] One aspect of the utility model provides a locking structure for a mobile outer cover, comprising: a locking mechanism for locking or unlocking the mobile outer cover; an operating member transmission-connected to the locking mechanism; and a driving member that can selectively drive the operating member by magnetic force; wherein the locking mechanism has a locking position and an unlocking position; in a locked state, the locking mechanism is located at the locking position, and the mobile outer cover is locked by the locking mechanism; in an unlocked state, the operating member is actuated under the action of the magnetic force generated by the driving member so that the locking mechanism is located at the unlocking position, whereby the mobile outer cover can move relative to the locking mechanism.

[0007] In one embodiment, the driving member is an electromagnetic member, and the operating member is a magnetic member; in the locked state, the electromagnetic member and the magnetic member maintain a gap; in the unlocked state, the operating member is attracted by the magnetic force of the electromagnetic member after receiving power excitation, so that the gap is eliminated, thereby causing the locking mechanism to be located in the unlocked position.

[0008] In one embodiment, the locking structure further includes an elastic member, which is connected to the magnetic member; the magnetic member can reach the locked state from the unlocked state by means of the elastic force generated by the elastic member being stretched by the magnetic member in the unlocked state.

[0009] In one embodiment, the locking mechanism includes a locking member and a locking mating member that cooperate with each other; the locking mating member is connected to the movable outer cover; the locking member is connected to the magnetic member, and the locking member can move to the locking position or the unlocking position relative to the locking mating member with the help of the action of the magnetic member; in the locking position, the locking member locks the position of the locking mating member; in the unlocking position, the locking mating member and the movable outer cover can move relative to the locking member.

[0010] In one embodiment, the locking fitting has a locking groove portion that is adapted to the locking member, the locking groove portion has an opening in a first direction, and the locking member can be moved in the first direction to the locking position or the unlocking position; in the locking position, at least part of the locking member is located in the locking groove portion; in the unlocking position, the locking member is disengaged from the locking groove portion.

[0011] In one embodiment, the locking structure also includes a transmission mechanism connecting the operating member and the locking member; the transmission mechanism can move by means of the driving action of the magnetic member to drive the locking member to move in the first direction to the locking position or the unlocking position.

[0012] In one embodiment, the transmission mechanism includes a first gear and a second gear that are meshed with each other; the first gear and the magnetic member are fixedly connected, and the second gear and the locking member are drivably connected; the magnetic member can drive the first gear and the second gear to rotate in a first plane, thereby driving the locking member to move in the first direction.

[0013] In one embodiment, the transmission mechanism also includes a transmission member fixedly connected to the second gear, and the transmission member can be rotated to the first position or the second position in the first plane with the help of the driving action of the second gear; the transmission member is located below the locking member; the transmission member has a rod portion perpendicular to the first plane; in the unlocked state, the transmission member is located in the second position, and the outer peripheral surface of the rod portion is abutted against the locking member to push the locking member upward to the unlocked position; in the locked state, the transmission member is located in the first position, the outer peripheral surface of the rod portion is disengaged from the locking member, and the locking member is located in the locked position.

[0014] In one embodiment, the locking structure further comprises a shell for being arranged on the lock beam, and the shell provides a receiving space for accommodating at least one of the locking mechanism, the operating member and the driving member.

[0015] Another aspect of the present invention provides a reverse thrust device, comprising a movable outer cover and a locking structure for locking or unlocking the movable outer cover; the locking structure is any of the locking structures described above.

[0016] The locking structure of the utility model drives the locking mechanism to lock or unlock through the magnetic effect between the driving member and the operating member, thereby realizing the locking and unfolding and backward movement of the movable outer cover. The utility model does not need to adopt the hydraulic structure and hydraulic pipeline in the conventional solution, so that the structural layout of the reverse thrust device is simpler, the space shortage of the lock beam layout is alleviated, and the overall weight is saved. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The above and other features, properties and advantages of the present invention will become more apparent through the following description in conjunction with the accompanying drawings and embodiments, in which:

[0018] Figure 1 is a schematic diagram of an embodiment of a locking structure according to the utility model;

[0019] Figure 2 yes Figure 1 A front view of the locking structure in a locked state;

[0020] Figure 3 yes Figure 1 A rear view of the locking structure in a locked state;

[0021] Figure 4 yes Figure 1 A schematic diagram of the three-dimensional structure of the locking structure in a locked state;

[0022] Figure 5 yes Figure 1 A schematic diagram of a three-dimensional structure of the locking structure in another perspective in a locked state;

[0023] Figure 6 yes Figure 1 A front view of the locking structure in the unlocked state;

[0024] Figure 7 yes Figure 1 A rear view of the locking structure in the unlocked state;

[0025] Figure 8 yes Figure 1 A schematic diagram of the three-dimensional structure of the locking structure in the unlocked state;

[0026] Fig. 9 yes Figure 1 A schematic diagram of the three-dimensional structure from another perspective of the locking structure in the unlocked state. DETAILED DESCRIPTION

[0027] Reference will now be made in detail to embodiments of the present invention, one or more examples of which are shown in the accompanying drawings. Each example is provided to explain the present invention, rather than to limit the present invention. In fact, it will be apparent to those skilled in the art that various modifications and variations may be made in the present invention without departing from the scope or spirit of the present invention. For example, a feature shown or described as part of one embodiment may be used together with another embodiment to produce yet another embodiment. Therefore, the present invention is intended to cover these modifications and variations that fall within the scope of the appended claims and their equivalents.

[0028] As used herein, the term "axial direction" refers to the central axis of the component or a direction parallel to the central axis of the impeller, and the term "circumferential direction" refers to a direction around the "axial direction". The terms "first" and "second" may be used interchangeably to distinguish one component from another, and are not intended to indicate the position or importance of each component.

[0029] The thrust reverser is used to generate reverse thrust when the aircraft lands or aborts takeoff. When the thrust reverser is deployed, the mobile outer cover moves backward and the outer airflow is ejected in the opposite direction to generate reverse thrust to slow down the aircraft. The thrust reverser is not allowed to be deployed in the air.

[0030] The transcowl lock is arranged on the locking beam of the reverse thrust device, and extends into the locking slot of the transcowl through the locking structure, thereby limiting the movement of the transcowl. The transcowl lock is used to prevent accidental deployment of the reverse thrust device in the air.

[0031] Figure 1 An embodiment of a locking structure 10 for a movable cover (not shown) of the present invention is shown. The locking structure 10 of the present invention (i.e., the movable cover lock) includes a locking mechanism 100, an operating member 200, and a driving member 300. The locking mechanism 100 is used to lock or unlock the movable cover. Figures 2 to 9 In the locking structure shown in FIG. 1 , the locking mechanism 100 has a locking position 100a and an unlocking position 100b. Figure 1 As shown, the operating member 200 is transmission-connected with the locking mechanism 100. The driving member 300 can selectively drive the operating member 200 by magnetic force. The locking mechanism has a locking position and an unlocking position. In the locking state of the locking structure 10 of the utility model, the locking mechanism 100 is located at the locking position 100a, and the movable outer cover is locked by the locking mechanism 100. In the unlocking state, the operating member 200 moves under the action of the magnetic force generated by the driving member 300 so that the locking mechanism 100 is located at the unlocking position 100b, whereby the movable outer cover can move relative to the locking mechanism 100.

[0032] The locking structure 10 of the utility model drives the locking mechanism 100 to lock or unlock through the magnetic effect between the driving member 300 and the operating member 200, thereby realizing the locking and unfolding and backward movement of the movable cover. The utility model does not need to adopt the hydraulic structure and hydraulic pipeline in the conventional solution, so that the structural layout of the reverse thrust device is simpler, the space shortage of the lock beam layout is alleviated, and the overall weight is saved.

[0033] Figures 2 to 5 The locking structure 10 is shown in a locked state. Figures 6 to 9 FIG. 1 shows the locking structure 10 in the unlocked state. Figures 1 to 9 As shown, aa represents the first direction, bb represents the second direction, cc represents the third direction, and FF represents the first plane. The first direction aa, the second direction bb, and the third direction cc are perpendicular to each other, and the third direction cc is parallel to the first plane FF, and the first direction aa is perpendicular to the first plane FF. The second direction bb is the deployment direction of the movable cover not shown.

[0034] like Figure 1 As shown, in one embodiment, the locking structure 10 further includes a housing 600. The housing 600 provides a receiving space 610 for receiving at least one of the locking mechanism 100, the operating member 200, and the driving member 300. The housing 600 can play an external protection role to prevent external contaminants from entering the interior of the locking structure 10. The housing 600 can be disposed on a locking beam (not shown). Figure 1 As shown, the locking mechanism 100 and the driving member 300 may be disposed in a housing 600 .

[0035] In one embodiment, the locking mechanism 100 includes a locking member 110 and a locking fitting member 120 that cooperate with each other. The locking fitting member 120 is connected to the movable outer cover. It can also be understood that the locking fitting member 120 is a part of the movable outer cover. The locking member 110 is connected to the magnetic member, and the locking member 110 can move to a locking position 100a or an unlocking position 100b relative to the locking fitting member 120 by means of the action of the magnetic member. In the locking position 100a, the locking member 110 locks the position of the locking fitting member 120, and the locking member 110 can prevent the locking fitting member 120 and the movable outer cover from moving. In the unlocking position 100b, the locking fitting member 120 and the movable outer cover can move relative to the locking member 110.

[0036] Based on the above embodiments, Figures 2 to 9 As shown, the locking fitting 120 has a locking groove 121 adapted to the locking member 110, and the locking groove 121 has an opening 122 in the first direction aa. The locking member 110 can move to the locking position 100a or the unlocking position 100b in the first direction aa. Figures 2 to 5As shown, in the locking position 100a, at least part of the locking member 110 is located in the locking groove 121, and the locking member 110 can limit the locking member 120. The locking member 110 can move downward until it abuts against the bottom of the locking groove 121 of the locking member 120. Figures 6 to 9 As shown, at the unlocking position 100b, the locking member 110 is disengaged from the locking groove 121. At this time, the locking member 110 is completely disengaged and cannot limit the locking fitting 120.

[0037] In one embodiment, the driving member 300 is an electromagnetic member (hereinafter, the reference numeral 300 represents the electromagnetic member), and the operating member 200 is a magnetic member (hereinafter, the reference numeral 200 represents the magnetic member). The electromagnetic member 300 is connected to an excitation power source 700. The excitation power source 700 can output a locking signal or an unlocking signal to the electromagnetic member 300. After the electromagnetic member 300 receives power excitation, that is, the electromagnetic member 300 receives an unlocking signal, the electromagnetic member 300 generates a magnetic force that can attract the magnetic member 200; after the power excitation to the electromagnetic member 300 is canceled, that is, the electromagnetic member 300 receives a locking signal, the electromagnetic member 300 loses the above-mentioned magnetic force, and the magnetic member 200 is no longer attracted and returns to its original position. In the locked state, the electromagnetic member 300 and the magnetic member 200 maintain a distance L, such as Figure 2 and Figure 3 In the unlocked state, the operating member 200 is attracted by the magnetic force of the electromagnetic member 300 after receiving the power supply excitation, so that the gap L is eliminated, and then the locking mechanism 100 is located in the unlocked position 100b, as shown in FIG. Figure 6 and Figure 7 shown.

[0038] In the unlocked state, the electromagnetic member 300 and the magnetic member 200 need to restore the interval L to the self-unlocking state. In one embodiment, the locking structure 10 further includes an elastic member 400, one end of which is connected to the magnetic member 200, and the other end is fixedly connected to the housing 600. The magnetic member 200 can be stretched by the elastic member 400 in the unlocked state to reach the locked state. Figure 6 and Figure 7 In the unlocked state, the magnetic member 200 moves toward the direction close to the electromagnetic member 300 ( Figure 6 On the left, Figure 7 The elastic member 400 is attracted to the right side of the electromagnetic member 300, and the elastic member 400 is stretched to generate elastic force. After the electromagnetic member 300 loses its magnetic force, the electromagnetic member 300 no longer attracts the magnetic member 200, and the elastic force pulls the magnetic member 200 back to the initial position in the locked state, and the interval L is restored. The elastic member 400 can be a spring. In another embodiment, the interval L can be restored by other forces such as gravity.

[0039] In one embodiment, the locking structure 10 further includes a transmission mechanism 500. The transmission mechanism 500 connects the operating member 200 and the locking member 110. The transmission mechanism 500 can move by means of the driving action of the magnetic member 200 to drive the locking member 110 to move to the locking position 100a or the unlocking position 100b in the first direction aa. Through the transmission mechanism 500, the movement of the operating member 200 in the third direction cc can be converted into the movement of the locking member 110 in the first direction aa, so as to realize the switching of the locking member 110 between the locking position 100a and the unlocking position 100b.

[0040] Further, the transmission mechanism 500 includes a first gear 510 and a second gear 520 that mesh with each other. The first gear 510 and the second gear 520 are rotatably connected to the housing 600. The first gear 510 is fixedly connected to the magnetic member 200, and the second gear 520 is drivably connected to the locking member 110. The magnetic member 200 can drive the first gear 510 and the second gear 520 to rotate in the first plane FF, thereby driving the locking member 110 to move in the first direction aa.

[0041] In one embodiment, the transmission mechanism 500 further includes a transmission member 530 fixedly connected to the second gear 520, and the transmission member 530 can be rotated to a first position 530a or a second position 530b in the first plane FF by means of the driving action of the second gear 520. Figures 2 to 9 As shown, the transmission member 530 is located below the locking member 110. The transmission member 530 has a rod portion 531 perpendicular to the first plane FF, that is, the rod portion 531 extends in the second direction bb. Figures 6 to 9 In the unlocked state, the transmission member 530 is located at the second position 530b, and the outer peripheral surface of the rod portion 531 abuts against the locking member 110 to push the locking member 110 upward to the unlocked position 100b. Figures 2 to 5 In the locked state, the transmission member 530 is located at the first position 530a, the outer circumference of the rod 531 is separated from the locking member 110, and the locking member 110 is located at the locked position 100a due to gravity. The second position 530b is higher than the first position 530a. The second gear 520 rotates to drive the transmission member 530 to rotate together, so that the locking member 110 can be pushed to the unlocking position 100b in the first direction aa; or the pushing force on the locking member 110 is removed, so that the locking member 110 falls back to the locked position 100a.

[0042] refer to Figure 3 and Figure 7The first gear 510 and the second gear 520 are in a plane gear transmission mode. The magnetic member 200 moves in the third direction cc or the first plane FF, driving the first gear 510 to rotate in the first plane FF, and then driving the second gear 520 to rotate in the first plane FF.

[0043] The first gear 510 may be a large gear, and the second gear 520 may be a small gear with a smaller diameter than the first gear 510. The small gear can save space, and the large gear drives the small gear to increase the rotation speed of the small gear, so that the magnetic member 200 can move a small distance to drive the second gear 520 to rotate a large angle. The parameters of the first gear 510 and the second gear 520 can be determined according to the stroke of the locking member 110.

[0044] Combine the following Figures 2 to 9 The locking state and unlocking state of the locking structure 10 of the present invention are described as follows:

[0045] refer to Figures 2 to 5 When the electromagnetic component 300 receives the locking signal, the electromagnetic component 300 does not generate magnetic force, the magnetic component 200 and the electromagnetic component 300 maintain a distance L in the third direction cc, the transmission component 530 is located at the first position 530a, the locking component 110 falls into the locking groove portion 121 of the locking fitting 120, the locking component 110 is located at the locking position 100a, the locking fitting 120 is locked, and the movable outer cover cannot be unfolded and moved backward.

[0046] refer to Figures 6 to 9 When the electromagnetic member 300 receives the unlocking signal, the electromagnetic member 300 generates a magnetic force to attract the magnetic member 200, and the magnetic member 200 moves to drive the first gear 510 to rotate on the first plane FF ( Figure 6 Rotate clockwise, Figure 7 The second gear 520 is driven to rotate in the opposite direction in the first plane FF, and the transmission member 530 is rotated upward from the first position 530a to the second position 530b, pushing the locking member 110 upward, so that the locking member 110 is completely disengaged from the locking groove portion 121 of the locking fitting 120. The locking member 110 is located at the unlocking position 100b, and the movable outer cover can be unfolded and moved backward in the second direction bb.

[0047] The reverse thrust device of the present invention comprises a movable outer cover and a locking structure 10 for locking or unlocking the movable outer cover.

[0048] Although the utility model is disclosed as above with preferred embodiments, it is not intended to limit the utility model. Any person skilled in the art can make possible changes and modifications without departing from the spirit and scope of the utility model. Therefore, any modification, equivalent change and modification made to the above embodiments based on the technical essence of the utility model without departing from the content of the technical solution of the utility model shall fall within the protection scope defined by the claims of the utility model.

Claims

1. A locking structure, characterized in that: include: a locking mechanism for locking or unlocking the movable cover; An operating member drivingly connected to the locking mechanism; as well as a driving member that can selectively drive the operating member by magnetic force; Wherein, the locking mechanism has a locking position and an unlocking position; In the locked state, the locking mechanism is located at the locked position, and the movable outer cover is locked by the locking mechanism; In the unlocked state, the operating member moves under the action of the magnetic force generated by the driving member so that the locking mechanism is located in the unlocked position, whereby the movable outer cover can move relative to the locking mechanism.

2. The locking structure according to claim 1, characterized in that: The driving member is an electromagnetic member, and the operating member is a magnetic member; In the locked state, the electromagnetic member and the magnetic member are kept apart; In the unlocked state, the operating member is attracted under the action of the magnetic force of the electromagnetic member after receiving power excitation, so that the gap is eliminated, and the locking mechanism is located in the unlocked position.

3. The locking structure according to claim 2, characterized in that: The locking structure further comprises an elastic member, wherein the elastic member is connected to the magnetic member; The magnetic member can be moved from the unlocked state to the locked state by means of the elastic force generated by the elastic member being stretched by the magnetic member in the unlocked state.

4. The locking structure according to claim 2 or 3, characterized in that: The locking mechanism comprises a locking piece and a locking matching piece which cooperate with each other; The locking fitting is connected to the movable outer cover; The locking member is connected to the magnetic member, and the locking member can move relative to the locking matching member to the locking position or the unlocking position by means of the action of the magnetic member; In the locking position, the locking member locks the position of the locking mating member; In the unlocking position, the locking fitting and the movable cover are movable relative to the locking member.

5. The locking structure according to claim 4, characterized in that: The locking fitting has a locking groove portion matched with the locking member, the locking groove portion has an opening in a first direction, and the locking member can move to the locking position or the unlocking position in the first direction; In the locking position, at least a portion of the locking member is located in the locking groove portion; In the unlocking position, the locking member is disengaged from the locking groove portion.

6. The locking structure according to claim 5, characterized in that: The locking structure further comprises a transmission mechanism connecting the operating member and the locking member; The transmission mechanism can move by means of the driving action of the magnetic member to drive the locking member to move to the locking position or the unlocking position in the first direction.

7. The locking structure according to claim 6, characterized in that: The transmission mechanism comprises a first gear and a second gear meshing with each other; The first gear is fixedly connected to the magnetic member, and the second gear is drivably connected to the locking member; The magnetic member can drive the first gear and the second gear to rotate in a first plane, thereby driving the locking member to move in the first direction.

8. The locking structure according to claim 7, characterized in that: The transmission mechanism further comprises a transmission member fixedly connected to the second gear, and the transmission member can be rotated to a first position or a second position in the first plane by means of a driving action of the second gear; The transmission member is located below the locking member; The transmission member has a rod portion perpendicular to the first plane; In the unlocked state, the transmission member is located at the second position, and the outer peripheral surface of the rod portion abuts against the locking member to push the locking member upward to the unlocked position; In the locked state, the transmission member is located at the first position, the outer peripheral surface of the rod portion is disengaged from the locking member, and the locking member is located at the locked position.

9. The locking structure according to any one of claims 1 to 3, characterized in that: The locking structure further comprises a shell for being arranged on the lock beam, and the shell provides a storage space for accommodating at least one of the locking mechanism, the operating member and the driving member.

10. A thrust reverser device, comprising a movable outer cover and a locking structure for locking or unlocking the movable outer cover; It is characterized in that The locking structure is the locking structure according to any one of claims 1 to 9.

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