Small locking mechanism

Abstract

The utility model belongs to the field of airplane covering cap design, and relates to a small locking mechanism which comprises a base, a lock handle, a lock tongue, a connecting shaft, a rotating shaft, a stop pin and a lock hook. The stop pin is inserted between the connecting plate and the lock handle, the connecting shaft is hinged to the side, close to the lock hook, of the connecting plate and the side, close to the lock hook, of the lock handle, the rotating shaft is hinged to one end of the lock tongue and the middle of the lock handle, and the end, close to the lock tongue, of the lock hook is turned upwards to form a U-shaped turned edge. The other end of the spring bolt can be clamped and matched with the U-shaped flange; when the maintenance covering cap needs to be opened or closed, the lock tongue is driven to turn over by pulling out or inserting the stop pin and rotating the lock handle until the end part of the lock tongue is separated from or connected with the U-shaped flange of the lock hook, so that the maintenance covering cap can be opened and closed from the inside, and the maintenance covering cap has the characteristics of small size, light weight and large bearing capacity.

Description

TECHNICAL FIELD

[0001] The application belongs to the field of aircraft access cover design, and particularly relates to a small locking mechanism. BACKGROUND

[0002] In aircraft structure design, some maintenance access covers need to be opened and closed from the inside, and meanwhile, the space is narrow, the weight index is small, and a locking mode with small volume, light weight, high bearing capacity and capable of being opened from the inside needs to be adopted. The present application is to meet such use requirements. The existing locking mechanism is heavy in weight, large in installation space required, needs to be opened and locked from the outside, and cannot meet such use requirements.

[0003] Therefore, how to realize the opening and locking of the access cover from the inside is a problem to be solved. CONTENT OF THE UTILITY MODEL

[0004] The application aims to provide a small locking mechanism to solve the problem that the existing access cover needs to be opened and locked from the outside.

[0005] The technical scheme of the application is: a small locking mechanism, comprising a base, a lock handle, a lock tongue, a connecting shaft, a rotating shaft, a stop pin and a lock hook; the base and the lock hook are fixed on a maintenance access cover and a side wall on one side of the maintenance access cover respectively, or the base and the lock hook are fixed on a side wall on one side of the maintenance access cover and the maintenance access cover respectively; a connecting plate vertically arranged is arranged above the base, the connecting shaft, the rotating shaft and the stop pin are all columnar structures, the stop pin is inserted between the connecting plate and the lock handle, the connecting shaft is hinged to one side of the connecting plate and the lock handle close to the lock hook, the rotating shaft is hinged to one end of the lock tongue and the middle part of the lock handle, and the end of the lock hook close to the lock tongue is turned upward to form a U-shaped flange; the other end of the lock tongue can be clamped and matched with the U-shaped flange.

[0006] Preferably, first connecting holes and first stop pin holes are respectively arranged on the two sides of the connecting plate, the lock handle is a hollow structure, second connecting holes, first rotating shaft holes and second stop pin holes are arranged on the side wall of the lock handle, and the first rotating shaft holes are located between the second connecting holes and the second stop pin holes; the stop pin is inserted between the first stop pin holes and the second stop pin holes, and the connecting shaft is hinged in the first connecting holes and the second connecting holes.

[0007] Preferably, a second rotating shaft hole is arranged on one end of the lock tongue, and the rotating shaft is connected with the first rotating shaft hole and the second rotating shaft hole.

[0008] The small locking mechanism of the application comprises a base, a lock handle, a lock tongue, a connecting shaft, a rotating shaft, a stop pin and a lock hook; the stop pin is inserted between the connecting plate and the lock handle, the connecting shaft is hinged to the connecting plate and the lock handle near the lock hook, the rotating shaft is hinged to the lock tongue at one end and the middle of the lock handle, the end of the lock hook near the lock tongue is turned upward to form a U-shaped flange, the other end of the lock tongue can be clamped with the U-shaped flange, when the maintenance opening cover needs to be opened or closed, the stop pin is pulled out or inserted, the lock handle is turned to drive the lock tongue to turn until the end of the lock tongue is disengaged from the U-shaped flange of the lock hook or is clamped with the U-shaped flange, so that the maintenance opening cover can be opened and closed from the inside, and the small locking mechanism has the characteristics of small size, light weight and large carrying capacity. BRIEF DESCRIPTION OF DRAWINGS

[0009] In order to more clearly illustrate the technical solutions provided by the application, the following will briefly introduce the drawings. Obviously, the drawings described below are only some embodiments of the application.

[0010] Figure 1 It is a schematic diagram of the overall structure of the application;

[0011] Figure 2 It is a schematic diagram of the base structure of the application;

[0012] Figure 3 It is a schematic diagram of the lock handle structure of the application;

[0013] Figure 4 It is a schematic diagram of the lock tongue structure of the application;

[0014] Figure 5 It is an exploded structural schematic diagram of the connecting shaft, rotating shaft and stop pin of the application;

[0015] Figure 6 It is a schematic diagram of the lock hook structure of the application.

[0016] 1, base; 2, lock handle; 3, lock tongue; 4, connecting shaft; 5, rotating shaft; 6, stop pin; 7, lock hook; 8, first connecting hole; 9, first stop pin hole; 10, second connecting hole; 11, first rotating shaft hole; 12, second stop pin hole; 13, second rotating shaft hole; 14, connecting plate. DETAILED DESCRIPTION

[0017] The technical solutions in the embodiments of the application will be described clearly and completely below with reference to the drawings in the embodiments of the application. Obviously, the described embodiments are only some embodiments of the application, not all the embodiments. Based on the embodiments in the application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the application.

[0018] A small locking mechanism, as shown in the figure, comprises a base 1, a handle 2, a lock tongue 3, a connecting shaft 4, a rotating shaft 5, a stop pin 6 and a lock hook 7. Figures 1-6 The base 1 is of rectangular structure and a connecting plate 14 is vertically arranged on the top of the base 1, and the connecting plate 14 is provided with a first connecting hole 8 and a first stop pin hole 9 on both sides.

[0019] The handle 2 is of hollow structure and is provided with a second connecting hole 10, a first rotating shaft hole 11 and a second stop pin hole 12 on the side wall, and the first rotating shaft hole 11 is located between the second connecting hole 10 and the second stop pin hole 12. The connecting shaft 4, the rotating shaft 5 and the stop pin 6 are all of cylindrical structure, the stop pin 6 is inserted between the first stop pin hole 9 and the second stop pin hole 12 to connect the base 1 and the handle 2 together and plays a role of stop; the connecting shaft 4 is hinged in the first connecting hole 8 and the second connecting hole 10 to connect the base 1 and the handle 2.

[0020] The base 1 and the lock hook 7 are fixed on the maintenance cover and the side wall on one side of the maintenance cover respectively, or the base 1 and the lock hook 7 are fixed on the side wall on one side of the maintenance cover and the maintenance cover respectively.

[0021] One end of the handle 2 is hinged on the connecting shaft 4, the lock tongue 3 is of U-shaped type, the lock tongue 3 is provided with a second rotating shaft hole 13 on one end, the rotating shaft 5 is connected with the first rotating shaft hole 11 and the second rotating shaft hole 13 to hinge the middle part of the handle 2 and one end of the lock tongue 3; one end of the lock hook 7 close to the lock tongue 3 is turned upward to form a U-shaped turn-up edge, the other end of the lock tongue 3 can be clamped with the U-shaped turn-up edge to realize locking.

[0022] When the maintenance cover needs to be opened, the stop pin 6 in the first stop pin hole 9 and the second stop pin hole 12 is pulled out, then the handle 2 is rotated to drive the lock tongue 3 to turn over until the end of the lock tongue 3 is disengaged from the U-shaped turn-up edge of the lock hook 7, then the stop pin 6 is inserted on the handle 2 or the connecting plate 14; when the maintenance cover needs to be closed, the end of the lock tongue 3 is clamped with the U-shaped turn-up edge of the lock hook 7 first, then the handle 2 is reversely rotated until the first stop pin hole 9 and the second stop pin hole 12 are in the opposite state, then the stop pin 6 is inserted to fix the handle 2 and the lock tongue 3. Therefore, through the above design, the maintenance cover can be opened and closed from the inside, and meanwhile, the maintenance cover has the characteristics of small size, light weight and large carrying capacity, and can be used in the cover structure of the aircraft structure which is narrow in space and needs to be opened and locked from the inside.

[0023] Finally, it should be noted that: the utility model discloses the embodiment in the drawing, only relate to the structure involved in the embodiment of the present disclosure, other structures can refer to the usual design, in the case of no conflict, the same embodiment and different embodiments of the utility model can be combined with each other;

[0024] Finally: the above described is only the preferred embodiment of the utility model, and is not used for limiting the utility model, and any modification, equivalent replacement, improvement and the like made in the spirit and principle of the utility model should be contained in the protection scope of the utility model.

Claims

1. A compact locking mechanism, characterized by: The utility model relates to a maintenance door lock, which comprises a base (1), a lock handle (2), a lock tongue (3), a connecting shaft (4), a rotating shaft (5), a stop pin (6) and a lock hook (7); the base (1) and the lock hook (7) are fixed on the side wall of the maintenance door cover and the side wall on one side of the maintenance door cover respectively, or the base (1) and the lock hook (7) are fixed on the side wall on one side of the maintenance door cover and the maintenance door cover respectively; a connecting plate (14) is vertically arranged above the base (1); the connecting shaft (4), the rotating shaft (5) and the stop pin (6) are all columnar structures; the stop pin (6) is inserted between the connecting plate (14) and the lock handle (2); the connecting shaft (4) is hingedly connected to the connecting plate (14) and the lock handle (2) on the side close to the lock hook (7); the rotating shaft (5) is hingedly connected to one end of the lock tongue (3) and the middle part of the lock handle (2); the end of the lock hook (7) close to the lock tongue (3) is turned upward to form a U-shaped flange; the other end of the lock tongue (3) can be clamped and matched with the U-shaped flange.

2. The compact locking mechanism of claim 1, wherein: First connecting holes (8) and first stop pin holes (9) are respectively formed in the two sides of the connecting plate (14); the lock handle (2) is a hollow structure; second connecting holes (10), first rotating shaft holes (11) and second stop pin holes (12) are formed in the side wall of the lock handle (2); the first rotating shaft hole (11) is located between the second connecting hole (10) and the second stop pin hole (12); the stop pin (6) is inserted between the first stop pin hole (9) and the second stop pin hole (12); and the connecting shaft (4) is hingedly connected in the first connecting hole (8) and the second connecting hole (10).

3. The compact locking mechanism of claim 2, wherein: A second rotating shaft hole (13) is formed in one end of the lock tongue (3); and the rotating shaft (5) is connected with the first rotating shaft hole (11) and the second rotating shaft hole (13).

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