A manual rotation locking mechanism for a tail wheel lock

Abstract

The present invention discloses a manual rotation locking mechanism for a tail wheel lock, which includes a hollow base arranged on the housing of the tail wheel lock. A rotating disk is arranged inside the base, and a plurality of slots are provided on its top surface. An installation cylinder is arranged above the base, and a cap-shaped locking button is arranged above the base. The upper end of the installation cylinder is sleeved with an unlocking button, and the inner diameter of the upper end of the installation cylinder is larger than that of the lower end. A limiting protrusion extends outward from the outer wall of the lower end of the locking button. A locking disk is arranged inside the locking button, and a plurality of insertion blocks that can be respectively inserted into the slots are arranged on the bottom surface of the locking disk. A connecting rod penetrating through the locking button is arranged on the top surface of the locking disk. A plurality of through holes are formed on the upper end wall of the installation cylinder, and steel balls are arranged in the through holes. The steel balls can protrude from the inner wall or the outer wall of the installation cylinder to limit the locking button or the unlocking button. A first spring is sleeved between the base and the locking disk, and between the locking button and the outer sleeve of the rotating disk. A second spring is sleeved between the base and the upper end of the unlocking button, and outside the installation cylinder; this mechanism separates the manual and electric working states to ensure the use reliability of the manual unlocking mechanism.

Description

Technical Field

[0001] The present invention relates to the technical field of tail wheel lock devices, and particularly to a manual rotation locking mechanism for a tail wheel lock. Background Art

[0002] At present, there are an endless stream of electromechanical locking products, and the operation mode of the products is that the motor rotates to drive the actuator to achieve locking. During the process, except for the linear motion at the lock pin, the rest are rotational motions. Since the reliability of electrical signal control is significantly different from that of mechanical control, in order to ensure the reliability of the functions of electromechanical locking products, it is often required that in addition to being able to achieve electrical control locking, it should also be able to have the function of manual locking, which puts forward requirements for the manual locking mechanism; to solve this potential problem and realize the design of the manual locking mechanism of the locking product, by analyzing the working process of this type of product and adding a manual locking mechanism to the rotating part, this problem can be well solved, and it is necessary to design the manual rotation locking mechanism of this type of product. Summary of the Invention

[0003] The purpose of the present invention is to propose a manual rotation locking mechanism for a tail wheel lock to solve the above problems.

[0004] A manual rotation locking mechanism for a tail wheel lock includes a hollow base provided on the tail wheel lock housing. A rotating disk is provided inside the base. A plurality of slots are provided on the top surface of the rotating disk. An installation cylinder is coaxially provided above the base. A cap-shaped locking button is coaxially provided above the base inside the installation cylinder. The outer wall of the locking button is in close contact with the inner wall of the installation cylinder. An unlocking button is sleeved on the upper end of the installation cylinder. The inner wall of the unlocking button is in close contact with the outer wall of the installation cylinder. The inner diameter of the upper end of the installation cylinder is larger than that of the lower end. A limiting protrusion extends outward from the outer wall of the lower end of the locking button, and the limiting protrusion is in close contact with the inner wall of the lower end of the installation cylinder. A lock disk is coaxially provided inside the locking button. A plurality of insertion blocks that can be respectively inserted into the slots are provided on the bottom surface of the lock disk. The lower end of the lock disk can be inserted into the motor gear in the tail wheel lock. A connecting rod that penetrates through the locking button is coaxially provided on the top surface of the lock disk. A plurality of through holes are evenly spaced along the radial direction on the upper end wall of the installation cylinder. Steel balls are provided in the through holes. The steel balls can protrude from the inner wall or the outer wall of the installation cylinder to limit the locking button or the unlocking button. A first spring is sleeved between the base and the locking disk, and between the locking button and the outer sleeve of the rotating disk. A second spring is sleeved between the base and the upper end of the unlocking button and outside the installation cylinder.

[0005] Further, the aperture of the through hole on the inner wall side of the installation cylinder is smaller than that on the outer wall side, and a groove for accommodating the protruding part of the steel ball is provided on the inner wall of the upper end of the unlocking button.

[0006] Further, a handle is provided on the connecting rod at the upper end of the locking button.

[0007] Further, the connecting rod is threadedly connected to the upper locking button. A square hole is provided inside the handle. The middle part of the connecting rod is square and adapted to the square hole. A nut is threadedly connected to the upper end of the connecting rod, and a gasket is provided between the nut and the handle.

[0008] Further, there are 8 through holes in the upper end wall of the installation cylinder, and the number of steel balls is 8.

[0009] Furthermore, an annular installation groove is provided on the top surface of the base, and the lower end of the installation cylinder is connected to the installation groove by bolts.

[0010] Still further, the base and the tail wheel lock housing are threadedly connected.

[0011] The beneficial effects of the present invention are as follows:

[0012] 1. It solves the problems of excessive operating force in the upward lifting type of the original tail wheel lock product and its independent separation from the product;

[0013] 2. The upper locking mechanism has a simple structure, mature structures of each part, strong reliability, simple operation in the rotary unlocking mode, and does not occupy installation space;

[0014] 3. It does not affect the normal motor signal control function of the product, realizes the separation of manual and electric working states, and ensures the use reliability of the manual unlocking mechanism;

[0015] 4. The whole upper locking mechanism is assembled with the tail wheel lock integrally, reducing the risk of product failures caused by later assembly. Description of the Drawings

[0016] Figure 1 It is a formal cross-sectional view of the present invention.

[0017] Figure 2 It is a position diagram of the steel balls when the manual rotary upper locking mechanism is locked. Detailed Embodiment

[0018] Next, in conjunction with the drawings, the technical solutions in the embodiments of the present invention will be clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0019] Refer to Figure 1-2, A manual rotation locking mechanism for a tail wheel lock, including a hollow base 1 provided on the housing 15 of the tail wheel lock. A rotating disk 14 is provided inside the base 1. Multiple slots are provided on the top surface of the rotating disk 14. An installation cylinder 5 is coaxially provided above the base 1. A cap-shaped locking button 11 is coaxially provided above the base 1 inside the installation cylinder 5. The outer wall of the locking button 11 is in close contact with the inner wall of the installation cylinder 5. An unlocking button 4 is sleeved on the upper end of the installation cylinder 5. The inner wall of the unlocking button 4 is in close contact with the outer wall of the installation cylinder 5. The inner diameter of the upper end of the installation cylinder 5 is larger than that of the lower end. A limiting protrusion extends outward from the outer wall of the lower end of the locking button 11. The limiting protrusion is in close fit with the inner wall of the lower end of the installation cylinder 5 to prevent the locking button 11 from popping out in the unlocked state. A locking disk 12 is coaxially provided inside the locking button 11. Multiple insertion blocks 16 that can be respectively inserted into the slots are provided on the bottom surface of the locking disk 12. The lower end of the locking disk 12 can be inserted into the motor gear inside the tail wheel lock. A connecting rod 9 that penetrates the locking button 11 is coaxially provided on the top surface of the locking disk 12. A number of through holes are evenly spaced along the radial direction on the upper end wall of the installation cylinder 5. Steel balls 6 are provided in the through holes. The steel balls 6 can protrude from the inner wall or the outer wall of the installation cylinder 5 to limit the locking button 11 or the unlocking button 4. A first spring 13 is sleeved between the base 1 and the locking disk 12, and between the locking button 11 and the outer sleeve of the rotating disk 14. A second spring 3 is sleeved between the base 1 and the upper end of the unlocking button 4, and outside the installation cylinder 5.

[0020] Preferably, the inner diameter of the through hole on the inner wall side of the installation cylinder 5 is smaller than that on the outer wall side. A groove for accommodating the protruding part of the steel ball 6 is provided on the inner wall of the upper end of the unlocking button 4.

[0021] A handle 7 is provided on the connecting rod 9 at the upper end of the locking button 11, which is convenient and labor-saving to use.

[0022] The connecting rod 9 is threadedly connected to the locking button 11. A square hole is provided inside the handle 7. The middle part of the connecting rod 9 is square and adapted to the square hole. A nut 8 is threadedly connected to the upper end of the connecting rod 9. A gasket 10 is provided between the nut 8 and the handle 7. When locking, the handle 7 is used to press downward to insert the insertion block 16 into the slot, and then the handle 7 is rotated to achieve manual locking. It is convenient to use and also facilitates the disassembly and assembly between various components, providing convenience for subsequent maintenance.

[0023] Preferably, there are 8 through holes on the upper end wall of the installation cylinder 5, and the number of steel balls 6 is 8.

[0024] An annular installation groove is provided on the top surface of the base 1. The lower end of the installation cylinder 5 is connected to the installation groove by a bolt 2, which is convenient for the disassembly inside the mechanism.

[0025] The base 1 is threadedly connected to the housing 14 of the tail wheel lock, which is convenient for disassembly and maintenance.

[0026] Working principle: As Figure 1As shown, the figure shows that the mechanism is in the initial state, the lock disk 12 is separated from the rotating disk 14, and the manual locking cannot be achieved by turning the handle 7. The position of the steel ball 6 is stuck in the rotating groove of the unlocking button 4. Even under the action of the first spring 3, it cannot move upward because the steel ball 6 is incompressible and the movement space of the steel ball 6 is limited by the locking button 11. This is the initial state; when manual locking is required, gently press the handle downward for movement. If the steel ball 6 is not seen to protrude, it means that it is not in place yet and the tooth profiles of the lock disk 12 and the head of the rotating disk 14 are not engaged, the handle 7 should be rotated and continued to be pressed downward until the steel ball protrudes. At this time, the movement of the steel ball 6 is not restricted and the action of the second spring 13 causes the unlocking button 4 to move upward, and the steel ball 6 protrudes from the inner wall of the mounting tube 5. At this time, under the action of the second spring 13, the unlocking button 4 is fitted with the steel ball 6, but cannot return to the initial position through the steel ball 6 (such as Figure 2 As shown in the figure, the insert block 16 on the bottom surface of the lock disk 12 is inserted into the slot on the rotating disk 14 to realize the manual locking connection. The rotating handle 7 can connect the lower end of the rotating disk with the motor gear in the tail wheel lock to realize the manual locking function. Finally, after completing the manual rotation locking function, the unlocking button 4 is pressed downward to move until the steel ball 6 returns to the rotating groove of the unlocking button 4. The locking button 11 returns to the initial position under the action of the second spring 13. At this point, the mechanism can be ended.

[0027] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A manual rotation locking mechanism for a tail wheel lock, characterized in that: Comprising a hollow base (1) provided on a tail wheel lock housing (15), a rotating disc (14) is provided inside the base (1), a plurality of slots are provided on the top surface of the rotating disc (14), an installation cylinder (5) is coaxially provided above the base (1) at the upper part of the base (1), a cap-shaped locking button (11) is coaxially provided above the base (1) inside the installation cylinder (5), the outer wall of the locking button (11) is in close contact with the inner wall of the installation cylinder (5), an unlocking button (4) is sleeved on the outer upper end of the installation cylinder (5), the inner wall of the unlocking button (4) is in close contact with the outer wall of the installation cylinder (5), the inner diameter of the upper end of the installation cylinder (5) is larger than that of the lower end, a limiting protrusion extends outward from the outer wall of the lower end of the locking button (11), and the limiting protrusion is in close fit with the inner wall of the lower end of the installation cylinder (5). A lock disc (12) is coaxially provided inside the locking button (11), a plurality of insertion blocks (16) that can be respectively inserted into the slots are provided on the bottom surface of the lock disc (12), the lower end of the lock disc (12) can be inserted into the motor gear in the tail wheel lock, a connecting rod (9) passing through the locking button (11) is coaxially provided on the top surface of the lock disc (12), a plurality of through holes are evenly spaced along the radial direction on the upper end wall of the installation cylinder (5), steel balls (6) are provided in the through holes, the aperture of the through hole on the inner wall side of the installation cylinder (5) is smaller than that on the outer wall side, a groove for accommodating the protruding part of the steel ball (6) is provided on the upper end inner wall of the unlocking button (4), and the steel ball (6) can protrude from the inner wall or the outer wall of the installation cylinder (5) to limit the locking button (11) or the unlocking button (4). A first spring (13) is sleeved between the base (1) and the lock disc (12) and between the locking button (11) and the outer sleeve of the rotating disc (14), a second spring (3) is sleeved between the base (1) and the upper end of the unlocking button (4) and outside the installation cylinder (5), and a handle (7) is provided on the connecting rod (9) at the upper end of the locking button (11); The base (1) is threadedly connected to the tail wheel lock housing (15).

2. The manual rotation locking mechanism for a tail wheel lock according to claim 1, characterized in that: The connecting rod (9) is threadedly connected to the locking button (11), a square hole is provided inside the handle (7), the middle part of the connecting rod (9) is square and adapted to the square hole, a nut (8) is threadedly connected to the upper end of the connecting rod (9), and a gasket (10) is provided between the nut (8) and the handle (7).

3. A manual rotation locking mechanism for a tail wheel lock according to claim 1, characterized in that: There are 8 through holes on the upper end wall of the installation cylinder (5), and the number of steel balls (6) is 8.

4. A manual rotation locking mechanism for a tail wheel lock according to claim 1, characterized in that: An annular installation groove is provided on the top surface of the base (1), and the lower end of the installation cylinder (5) is connected to the installation groove by bolts (2).

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