Internal ventilation device for double-rotor unmanned helicopter

Abstract

The utility model discloses an internal ventilation device for a double-rotor unmanned helicopter, and relates to the technical field of unmanned helicopters, the internal ventilation device comprises a ventilation pipe, a mounting frame, a filter frame and a protective cover, a plurality of connecting structures are arranged between the protective cover and the filter frame, each connecting structure comprises a connecting groove, a connecting rod and a mounting assembly, and the mounting assembly is arranged outside the connecting rod. The mounting assembly is used for limiting the position of the connecting rod on the outer wall of the protective cover. According to the utility model, the connecting structure is matched with the limiting structure, so that the protective cover, the mounting frame and the filter frame can be fixed through the connection of the connecting rod and the connecting groove, and bolt structures and mounting time between the protective cover and the mounting frame as well as between the mounting frame and the filter frame are reduced; the efficiency of dismounting and mounting the protective cover, the mounting frame and the filter frame is effectively improved, the mounting cost is further reduced, and the use efficiency and the use value of the ventilation device are greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of unmanned helicopters, in particular to an internal ventilation device for a twin-rotor unmanned helicopter. Background Art

[0002] The existing Chinese patent application number is 202321376127.4, and the name is "An internal ventilation device for a twin-rotor unmanned helicopter." In this patent, the installed filter can be connected to the ventilation pipe by a certain snap-fit connection between the mounting bracket and the connecting plate, and then fixed to the ventilation pipe by a certain second threaded bolt, making it easy to disassemble. The filter is arranged in two groups that are symmetrical about the horizontal direction of the ventilation pipe, which can ensure that when the ventilation pipe is in use, when the twin-rotor unmanned helicopter is performing ventilation management work, dust is prevented from entering the interior of the drone and causing a short circuit to the internal components of the twin-rotor unmanned helicopter, causing danger. By providing a protective bracket, when the twin-rotor unmanned helicopter is performing ventilation management work and the helicopter is flying in the air, the installed protective bracket can be connected to the ventilation pipe by a certain snap-fit connection between the protective cover and the limit ring, and fixed by the first threaded bolt, to prevent large impurities in the air and birds in the air from hitting the interior of the ventilation pipe when the twin-rotor unmanned helicopter is performing ventilation management in the air, causing damage, and the installed protective bracket provides a blocking and protective effect.

[0003] In the above process, although the first threaded bolt and the second threaded bolt can fix the position of the protective cover, the mounting bracket and the filter plate after being engaged, the installation of the filter screen through the mounting bracket and the ventilation pipe and the installation of the protective cover require the use of multiple mounting threaded bolts. At the same time, the tightening of multiple threaded bolts requires too much time to install the filter screen and the protective cover, resulting in low installation efficiency and high cost, which affects the use of the ventilation device of the twin-rotor unmanned helicopter and reduces the ventilation efficiency of the support machine. Utility Model Content

[0004] The purpose of the utility model is to provide an internal ventilation device for a twin-rotor unmanned helicopter to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned object, the present invention provides the following technical solution: an internal ventilation device for a twin-rotor unmanned helicopter, comprising a ventilation pipe, a mounting frame, a filter frame, and a protective cover, wherein the ventilation pipe and the filter frame are respectively arranged at both ends of the mounting frame, and the protective cover is fixedly arranged at the end of the filter frame away from the mounting frame, and a plurality of connecting structures are provided between the protective cover and the filter frame, wherein the connecting structures include:

[0006] A connecting groove is provided on the outer wall of the mounting frame and the filter frame;

[0007] A connecting rod, the ends of which are movably interlaced with the outer walls of the filter frame and the mounting frame, and the connecting rod is used to limit the connection between the protective cover, the mounting frame and the filter frame;

[0008] The mounting assembly is arranged on the outside of the connecting rod, and the mounting assembly is used to limit the position of the connecting rod on the outer wall of the protective cover.

[0009] Preferably, the mounting assembly includes a sleeve and a mounting groove, the mounting groove is provided on the outer wall of the protective cover, the cross section of the mounting groove is convex-shaped, and the sleeve is movably arranged in the inner cavity of the mounting groove.

[0010] Preferably, a limiting structure is provided at the end of the connecting rod away from the connecting groove, and the limiting structure includes a limiting cap and a snap-fit assembly. The limiting cap is fixedly sleeved on the end of the connecting rod through the snap-fit assembly, and the snap-fit assembly is provided between the limiting cap and the connecting rod.

[0011] Preferably, the locking assembly includes a limit block, a limit groove and a movable groove, the limit block is fixedly arranged on the inner wall of the limit cap, the limit groove and the movable groove are both opened on the outer wall of the connecting rod, and the limit groove is connected to the inner cavity of the movable groove.

[0012] Preferably, the connecting structure further includes a spring, and the spring is fixedly arranged between the connecting rod and the sleeve.

[0013] Preferably, the cross section of the filter frame is convex-shaped, and the filter frame is inserted and engaged with the inner cavity of the mounting frame.

[0014] The technical effects and advantages of this utility model are:

[0015] The utility model adopts the setting mode that the connection structure and the limit structure cooperate with each other, so that the protective cover and the mounting frame and the filter frame can be fixed by connecting the connecting rod and the connecting groove, reducing the bolt structure and installation time between the protective cover and the mounting frame and the mounting frame and the filter frame, effectively improving the efficiency of disassembly and assembly between the protective cover and the mounting frame and the filter frame, thereby also reducing the installation cost and greatly improving the use efficiency and value of the ventilation device. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model.

[0017] Figure 2 This is a schematic diagram of the cross-sectional structure of the utility model.

[0018] Figure 3 For this utility model Figure 2 A schematic diagram of the enlarged structure.

[0019] Figure 4For this utility model Figure 2 Schematic diagram of the enlarged structure at point B.

[0020] Figure 5 This is a schematic diagram of the three-dimensional structure of the filter frame of the utility model.

[0021] In the figure: 1. Ventilation duct; 2. Mounting frame; 3. Filter frame; 4. Protective cover; 5. Connecting structure; 501. Connecting rod; 502. Sleeve; 503. Spring; 504. Mounting slot; 505. Connecting slot; 6. Limiting structure; 601. Limiting cap; 602. Limiting block; 603. Limiting slot; 604. Moving slot. DETAILED DESCRIPTION

[0022] 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 embodiments 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 making creative efforts are within the scope of protection of the present invention.

[0023] The utility model provides Figure 1-5 The internal ventilation device shown is for a twin-rotor unmanned helicopter, comprising a ventilation pipe 1, a mounting frame 2, a filter frame 3 and a protective cover 4. The ventilation pipe 1 and the filter frame 3 are respectively arranged at both ends of the mounting frame 2. The cross-section of the filter frame 3 is convex-shaped. The filter frame 3 is interlaced and engaged with the inner cavity of the mounting frame 2. The protective cover 4 is fixedly arranged at the end of the filter frame 3 facing away from the mounting frame 2.

[0024] like Figure 1 and Figure 5 As shown in the figure, the filter frame 3 is connected to the inner cavity of one end of the mounting frame 2 by interlacing and fitting, and the protective cover 4 is sleeved on the outer wall of the mounting frame 2 after the filter frame 3 is connected to the mounting frame 2, so that the filter frame 3 can also be covered, thereby improving the safety and effectiveness of ventilation using the ventilation pipe 1.

[0025] A plurality of connecting structures 5 are arranged between the protective cover 4 and the filter frame 3. The connecting structure 5 includes a connecting groove 505, a connecting rod 501 and an installation assembly. The connecting groove 505 is opened on the outer wall of the mounting frame 2 and the filter frame 3. The end of the connecting rod 501 is movably interlaced with the outer wall of the filter frame 3 and the mounting frame 2. The connecting rod 501 is used to limit the connection between the protective cover 4, the mounting frame 2 and the filter frame 3. The installation assembly is arranged on the outside of the connecting rod 501. The installation assembly is used to limit the position of the connecting rod 501 on the outer wall of the protective cover 4.

[0026] like Figure 2 and Figure 3As shown in , one end of the connecting rod 501 is inserted and connected with the inner cavity of the connecting groove 505, and the inner cavity of the connecting groove 505 opened on the outer wall of the mounting frame 2 is connected to the inner wall of the mounting frame 2, so that it can be connected with the inner cavity of the connecting groove 505 opened on the outer wall of the filter frame 3, so that one end of the connecting rod 501 can pass through the inner cavity of the connecting groove 505 on the outer wall of the mounting frame 2, and can continue to move and insert and connect with the connecting groove 505 on the outer wall of the filter frame 3. Therefore, under the cooperation of the connecting rod 501 and the connecting groove 505, one end of the filter frame 3 is embedded and inserted with one end of the mounting frame 2, and after the protective cover 4 is sheathed on the outside of one end of the mounting frame 2, the structures can be fixed, reducing the structure and time of connecting and fixing between the mounting frame 2 and the filter frame 3 and the protective cover 4, and effectively improving the convenience and efficiency of disassembly and assembly between the protective cover 4 and the mounting frame 2, as well as the filter frame 3 and the mounting frame 2.

[0027] The mounting assembly includes a sleeve 502 and a mounting groove 504. The mounting groove 504 is opened on the outer wall of the protective cover 4. The cross-section of the mounting groove 504 is convex. The sleeve 502 is movably arranged in the inner cavity of the mounting groove 504. The connecting structure 5 also includes a spring 503, which is fixedly arranged between the connecting rod 501 and the sleeve 502.

[0028] like Figure 2 and Figure 3 As shown in , the convex cross-section of the mounting groove 504 is set to limit the movement range of one end of the sleeve 502, but cannot limit the movement range of the other end of the sleeve 502, so that the sleeve 502 can move from the inside of the protective cover 4 to the inner cavity of the mounting groove 504, and then the connecting rod 501 is pulled outward from the outside, so that the sleeve 502 can be prevented from falling from the inner cavity of the mounting groove 504, and at the same time, the protective cover 4 can be moved to the outside of one end of the mounting frame 2, so that the sleeve 502 can be installed with the protective cover 4 and the mounting frame 2, so that the outer wall of the mounting frame 2 limits the movement range of the other end of the sleeve 502, The stability of the position of the sleeve 502 during the movement of the connecting rod 501 is ensured. At the same time, after disassembly and assembly between the protective cover 4 and the mounting frame 2, the sleeve 502 can also be separated from the mounting groove 504, so that the protective cover 4 can be disassembled and replaced separately. At the same time, it also provides convenience for the disassembly and assembly of the connecting structure 5, and effectively improves the flexibility of disassembly and assembly between structures. The spring 503 is fixedly sleeved on the outer wall of the connecting rod 501. The setting of the spring 503 enables the interlaced connection between the connecting rod 501 and the connecting groove 505 to utilize the elastic support performance of the spring 503, thereby ensuring the effectiveness of the connection between the connecting rod 501 and the connecting groove 505.

[0029] A limiting structure 6 is provided at the end of the connecting rod 501 away from the connecting groove 505. The limiting structure 6 includes a limiting cap 601 and a snap-fit assembly. The limiting cap 601 is fixedly sleeved on the end of the connecting rod 501 through the snap-fit assembly. The snap-fit assembly is arranged between the limiting cap 601 and the connecting rod 501. The snap-fit assembly includes a limiting block 602, a limiting groove 603 and a movable groove 604. The limiting block 602 is fixedly arranged on the inner wall of the limiting cap 601. The limiting groove 603 and the movable groove 604 are both opened on the outer wall of the connecting rod 501. The limiting groove 603 is connected to the inner cavity of the movable groove 604.

[0030] like Figure 4 As shown in the figure, the limiting cap 601 is fixedly sleeved on the other end of the connecting rod 501 by the interlaced engagement of the limiting block 602 and the limiting groove 603. The setting of the limiting cap 601 prevents the connecting rod 501 and the sleeve 502 from falling off from the inner cavity of the mounting groove 504 when in use, thereby ensuring the stability of the use of the connecting rod 501 and the sleeve 502. At the same time, the limiting cap 601 is connected to the end of the connecting rod 501 by the interlaced engagement of the limiting block 602 and the limiting groove 603, so that when the limiting cap 601 needs to be separated from the connecting rod 501, By rotating the limiting cap 601, the limiting block 602 can move along with the inner cavity of the movable groove 604. The movable groove 604 is L-shaped and opened on the outer wall of the other end of the connecting rod 501. By rotating with external force, the limiting block 602 will rotate from the inner cavity of the limiting groove 603 to the inner cavity of the movable groove 604, and then move toward the other end of the connecting rod 501, which will enable the limiting cap 601 to be separated from the other end of the connecting rod 501, thereby providing convenience for the disassembly and assembly between the limiting cap 601 and the connecting rod 501, and thus enhancing the effectiveness of the connecting structure 5.

[0031] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. An internal ventilation device for a twin-rotor unmanned helicopter, comprising a ventilation pipe (1), a mounting frame (2), a filter frame (3) and a protective cover (4), wherein the ventilation pipe (1) and the filter frame (3) are respectively arranged at both ends of the mounting frame (2), and the protective cover (4) is fixedly arranged at the end of the filter frame (3) away from the mounting frame (2), characterized in that: A plurality of connection structures (5) are provided between the protective cover (4) and the filter frame (3), and the connection structures (5) include: A connecting groove (505), wherein the connecting groove (505) is provided on the outer walls of the mounting frame (2) and the filter frame (3); A connecting rod (501), the end of which is movably interlaced with the outer wall of the filter frame (3) and the mounting frame (2), and the connecting rod (501) is used for limiting the connection between the protective cover (4), the mounting frame (2) and the filter frame (3); A mounting assembly is provided outside the connecting rod (501), and the mounting assembly is used to limit the position of the connecting rod (501) on the outer wall of the protective cover (4).

2. The internal ventilation device for a twin-rotor unmanned helicopter according to claim 1, characterized in that: The mounting assembly comprises a sleeve (502) and a mounting groove (504); the mounting groove (504) is provided on the outer wall of the protective cover (4); the cross section of the mounting groove (504) is convex; and the sleeve (502) is movably arranged in the inner cavity of the mounting groove (504).

3. The internal ventilation device for a twin-rotor unmanned helicopter according to claim 1, characterized in that: A limiting structure (6) is provided at the end of the connecting rod (501) facing away from the connecting groove (505), and the limiting structure (6) comprises a limiting cap (601) and a snap-fit assembly. The limiting cap (601) is fixedly sleeved on the end of the connecting rod (501) via the snap-fit assembly, and the snap-fit assembly is provided between the limiting cap (601) and the connecting rod (501).

4. The internal ventilation device for a twin-rotor unmanned helicopter according to claim 3, characterized in that: The engaging assembly comprises a limiting block (602), a limiting groove (603) and a movable groove (604); the limiting block (602) is fixedly arranged on the inner wall of the limiting cap (601); the limiting groove (603) and the movable groove (604) are both opened on the outer wall of the connecting rod (501); the limiting groove (603) is communicated with the inner cavity of the movable groove (604).

5. The internal ventilation device for a twin-rotor unmanned helicopter according to claim 1, characterized in that: The connecting structure (5) further comprises a spring (503), wherein the spring (503) is fixedly arranged between the connecting rod (501) and the sleeve (502).

6. The internal ventilation device for a twin-rotor unmanned helicopter according to claim 1, characterized in that: The cross section of the filter frame (3) is convex-shaped, and the filter frame (3) is inserted and engaged with the inner cavity of the mounting frame (2).

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