Tail pipe telescopic device of model airplane helicopter

Abstract

The invention provides a telescopic device for a tail pipe of an aeromodelling helicopter. The tail pipe device comprises a front pipe, a rear pipe, a double-locking mechanism, an empennage and a tail rotor mechanism. And shortening the tail pipe: releasing the locking of the double-locking mechanism, and pushing the rear pipe into the front pipe to achieve the purpose of shortening the tail pipe. The rear pipe is pulled to a proper position, the front pipe and the rear pipe are stably connected through the locking function of the double locking mechanisms, and the purpose of extending the tail pipe is achieved. In the extension state, the front pipe and the rear pipe are stably connected through the double-locking mechanism, and the stability of the model airplane helicopter during flight is guaranteed; cost is low and realization is easy.

Description

Technical Field

[0001] The patent of this invention relates to the field of helicopter technology, specifically to model aircraft helicopters and pipeline telescopic technology. Background Art

[0002] Under the general design of current model helicopters, the tail pipe is relatively long, and the length can reach more than 60% of the total length, which makes it inconvenient to store and transport, and the tail pipe is easily damaged during transportation. Therefore, it is necessary to provide a new tail pipe device to solve the above problems.

[0003] The present invention provides a telescopic device for a tail pipe, which effectively shortens the length of the tail pipe in a shortened state; at the same time, in an extended state, a double locking mechanism is used to ensure the strength of the tail pipe when extended, thereby improving the stability of the flight state. Summary of the invention

[0004] The purpose of this invention is to provide a simple, feasible and low-cost tail pipe telescopic device for model helicopters to solve the problems existing in the prior art. To achieve the above purpose, the technical solution of this method is as follows:

[0005] The device of the present invention comprises: a front tube 1, a rear tube 2, a double locking mechanism 3, a tail wing 4 and a tail rotor mechanism 5.

[0006] The front tube 1 includes: a card slot 1-1 and a card socket 1-2.

[0007] The rear tube 2 includes: a boss 2-1 and a groove 2-2.

[0008] The double locking mechanism 3 includes: a pin 3-1, a spring 3-2, a base 3-3, a nut 3-4, and a thread 3-5.

[0009] The base 3-3 is divided into two hollow semi-cylinders. After the pin 3-1 and the spring 3-2 are installed, in a preferred embodiment, the two hollow semi-cylinders are bonded together to form a whole, and then bonded into the groove 2-2 in the rear tube 2.

[0010] The tail wing 4 and the tail rotor mechanism 5 are for the convenience of illustration and do not belong to the core content of the present invention. In a preferred embodiment of the present invention, the tail wing 4 and the tail rotor mechanism 5 shown in the figure are used.

[0011] Tail pipe shortening steps: loosen nut 3-4, push the nut until it contacts the tail wing 4, press pin 3-1, and push the rear pipe 2 into the front pipe 1 to achieve the shortened state.

[0012] Tail pipe extension steps: in the shortened state, pull the rear pipe 2 out of the front pipe 1. During the pulling process, when the pin 3-1 reaches the position of the bayonet 1-2, the pin 3-1 is popped out of the bayonet 1-2 under the action of the spring 3-2. After the boss 2-1 contacts the slot 1-1, tighten the nut 3-4 to reach the extended state.

[0013] Compared with the prior art, the device of the present invention has at least the following beneficial effects: the device of the present invention is simple and reliable, and the extension and shortening of the tail pipe can be completed through simple operation; at the same time, in the extended state, the front pipe and the rear pipe are firmly connected by a double locking mechanism to ensure the stability of the model helicopter during flight; the cost is low and it is easy to implement. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural diagram of the entire device.

[0015] Figure 2 It is a structural diagram of the double locking mechanism.

[0016] Figure 3 It is a structural schematic diagram of the device in a shortened state.

[0017] Figure 4 It is a structural schematic diagram of the device in an extended state.

[0018] Figure 5 It is a schematic diagram of the structure of the pin, spring and base.

[0019] Figure 6 This is a partial assembly diagram of the double locking mechanism. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the implementation regulations described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0021] Tail pipe shortening steps: Figure 2 In the process, loosen the nut 3-4, push the nut until it contacts the tail wing 4, press the pin 3-1, and push the rear tube 2 into the front tube 1 to achieve Figure 3 Shown in shortened state.

[0022] Tail pipe extension steps: Figure 3 In the shortened state, the rear tube 2 is pulled out of the front tube 1. During the pulling process, when the pin 3-1 reaches the position of the bayonet 1-2, the pin 3-1 is ejected from the bayonet 1-2 under the action of the spring 3-2. After the boss 2-1 contacts the slot 1-1, the nut 3-4 is tightened to achieve the following effect. Figure 4 Shown in extended state.

[0023] Description of the double locking mechanism: the two locking methods of using the pin 3 - 1 to be clamped in the bayonet 1 - 2 and the nut 3 - 4 to be fastened are used to limit the relative movement of the front tube 1 and the rear tube 2 .

[0024] See Figure 5 In a preferred embodiment of the present invention, the base 3-3 is divided into two hollow semi-cylinders, and after the pin 3-1 and the spring 3-2 are installed, the two hollow semi-cylinders are bonded together to form a whole. There are bosses in the two hollow semi-cylinders of the base 3-3 to limit the movement of the pin 3-1 and the spring 3-2 therein, so as to prevent the pin 3-1 from popping out of the base 3-3.

[0025] See Figure 6 After the pin 3-1, the spring 3-2 and the base 3-3 are assembled, they are placed in the groove 2-2 in the rear tube 2. In a preferred embodiment, they are connected by bonding.

[0026] See Figure 6 The material, type, size, etc. of the nut 3-4 and the thread 3-5 should be determined according to the size of the rear tube 2. The minimum inner diameter of the nut 3-4 should be slightly larger than the outer diameter of the rear tube 2 so that they can slide smoothly relative to each other.

[0027] The above examples are only used to help understand the core idea of ​​the present invention. At the same time, for those skilled in the art, according to the idea of ​​the present invention, there will be changes in the specific implementation method and application scope. In summary, the content of this specification should not be understood as a limitation on the present invention.

Claims

1. A tail pipe telescopic device for a model helicopter, comprising a front pipe 1, a rear pipe 2, a double locking mechanism 3, a tail wing 4, and a tail rotor mechanism 5.

2. The double locking mechanism according to claim 1, comprising: Pin, spring, base, nut, thread.

3. The double locking mechanism according to claim 2, characterized in that: The two locking methods of using a pin stuck in the bayonet and a nut to tighten are used to limit the relative movement of the front tube and the rear tube.

4. This patent does not limit the size, material, manufacturing process, and assembly method of each part.

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