A safety fastener device suitable for fixing the cabin of an unmanned helicopter

Abstract

The present invention discloses a safety fastener device suitable for fixing an unmanned helicopter cabin, comprising an upper fastener and a lower fastener, an annular locking buckle and a quick-release pin; the upper fastener is fixedly connected to an upper cabin cover, and the lower fastener is fixedly connected to a main cabin; through the combined assembly of several key structures such as the upper fastener and the lower fastener, the annular locking buckle and the quick-release pin, the circumference of the connecting piece and multiple directions can be fastened simultaneously, thereby ensuring the reliability and stability of the connecting piece structure and meeting the design requirements for fixing the unmanned helicopter cabin.

Description

Technical Field

[0001] The invention relates to the technical field of unmanned helicopter equipment, and in particular to a safety fastener device suitable for fixing a cabin of an unmanned helicopter. Background Art

[0002] An unmanned helicopter is an unmanned aircraft that can take off and land vertically (VTOL) and is controlled by radio remote control or / and autonomously. It is a rotorcraft in terms of structure and a VTOL in terms of function. In the past decade, with the research progress in composite materials, power systems, sensors, and especially flight control technologies, unmanned helicopters have developed rapidly and are becoming the focus of people's attention.

[0003] Unmanned helicopters have unique flight performance and use value. Compared with manned helicopters, unmanned helicopters have incomparable advantages in many aspects due to their characteristics of no casualties, small size, low cost, strong survivability, etc. In the civilian field, unmanned helicopters have broad application prospects in atmospheric monitoring, traffic monitoring, resource exploration, power line detection, forest fire prevention, etc.

[0004] After research and development, the researchers have designed a new type of unmanned helicopter system, which is generally composed of a helicopter body, a control and navigation system, an integrated radio system and mission payload equipment. The helicopter body adopts a split design, which consists of an upper hatch and a main cabin. The connection between the upper hatch and the main cabin is generally fixed with rivets or screws, but these two connection methods cannot achieve the technical requirements of rapid disassembly and safety and reliability. For example, the rivet connection method cannot achieve rapid disassembly and is very inconvenient to disassemble. However, the screw connection method is also laborious and time-consuming to disassemble, and the connection reliability is not stable.

[0005] In summary, how to overcome the above-mentioned technical defects in traditional technologies is a technical problem urgently needed by those skilled in the art. Summary of the invention

[0006] The object of the present invention is to provide a safety fastener device suitable for fixing the cabin of an unmanned helicopter to solve the above-mentioned problem.

[0007] The present invention provides a safety fastener device suitable for fixing an unmanned helicopter cabin, comprising an upper fastener and a lower fastener, an annular locking buckle and a quick-release pin; the upper fastener is fixedly connected to an upper cabin cover, and the lower fastener is fixedly connected to a main cabin;

[0008] Wherein, the upper fastener comprises an upper fastener body, a positioning pin arranged at the bottom of the upper fastener body and protruding from the bottom surface, and a U-shaped mounting seat arranged on the front side of the upper fastener body; first pin holes for facilitating the insertion of the quick-release pin are arranged on both sides of the U-shaped mounting seat; and a first groove is arranged along the circumferential direction of the side wall of the upper fastener body;

[0009] The lower fastener comprises a lower fastener body, a positioning hole arranged on the top surface of the lower fastener body, and an I-shaped mounting seat arranged on the front surface of the lower fastener body; the I-shaped mounting seat is provided with a second pin hole for facilitating the insertion of the quick-release pin; and a second groove is provided along the circumferential direction of the side wall of the lower fastener body;

[0010] The upper fastener and the lower fastener are arranged and assembled relative to each other, so that the locating pin on the bottom surface of the upper fastener body is inserted into the locating hole on the top surface of the lower fastener body to realize horizontal locking, and the I-shaped mounting seat on the lower fastener body is assembled at the middle position on both sides of the U-shaped mounting seat of the upper fastener body, and the first pin hole is coaxial with the second pin hole to facilitate the insertion of the quick-release pin; and the first groove on the upper fastener body is connected with the second groove to form a circle of integral groove, and the annular locking buckle is sleeved in the integral groove formed by the upper fastener and the lower fastener to form a circumferential locking; and the quick-release pin passes through the first pin hole on the U-shaped mounting seat of the upper fastener body and the second pin hole on the I-shaped mounting seat of the lower fastener body to realize vertical locking.

[0011] Preferably, as a feasible implementation scheme, the annular locking buckle is a locking buckle with a soft structure.

[0012] Preferably, as a feasible implementation scheme, the annular locking buckle is a rubber locking buckle.

[0013] Preferably, as an implementable embodiment, the rubber locking buckle includes a ring-shaped rubber ring portion and a sheet-like pulling portion arranged at the top position of the rubber ring portion.

[0014] Preferably, as an implementation scheme, the first groove and the second groove are both grooves with semicircular cross-sections, and the cross-section of the annular locking buckle is circular.

[0015] Preferably, as an implementable embodiment, a first through hole perpendicular to the front surface of the upper fastener body is also provided on the front surface of the upper fastener body; the first through hole of the upper fastener body is passed through a rivet and is specifically used for fixed connection with the upper hatch.

[0016] Preferably, as an implementable embodiment, a second through hole perpendicular to the front surface of the lower fastener body is also provided on the front surface of the lower fastener body; the second through hole of the lower fastener body is passed through a rivet and is specifically used for fixed connection with the main cabin body.

[0017] Preferably, as a feasible implementation scheme, the quick-release pin is an R-shaped cotter pin.

[0018] Compared with the prior art, the advantages of the embodiments of the present invention are:

[0019] The present invention provides a safety fastener device suitable for fixing the cabin of an unmanned helicopter; the safety fastener device suitable for fixing the cabin of an unmanned helicopter mainly designs several key structural parts such as an upper fastener and a lower fastener, a ring-shaped locking buckle and a quick-release pin; wherein the upper fastener is responsible for fixedly connecting with the upper cabin cover, and the lower fastener is responsible for fixedly connecting with the main cabin body; when the upper cabin cover needs to be firmly connected with the main cabin body, the upper fastener and the lower fastener need to be connected together;

[0020] The connection between the upper fastener and the lower fastener is mainly achieved through three different locking methods to achieve a fast, safe and reliable locking connection; the safety fastener device suitable for fixing the unmanned helicopter cabin has a better effect of stable connection, and has been proven to be more stable after inspection; finally, several key structures such as the upper fastener and the lower fastener, the annular locking buckle and the quick-release pin are combined and assembled to form a simultaneous tightening of the connecting part circumference and multiple directions, thereby ensuring the reliability and stability of the connecting part structure and meeting the design requirements for fixing the unmanned helicopter cabin. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0022] Figure 1 A schematic diagram of a three-dimensional assembly structure from one perspective of a safety fastener device for fixing an unmanned helicopter cabin provided by an embodiment of the present invention;

[0023] Figure 2 A schematic diagram of a three-dimensional assembly structure of a safety fastener device for fixing an unmanned helicopter cabin provided by an embodiment of the present invention from another perspective;

[0024] Figure 3 A schematic diagram of a three-dimensional assembly structure of a safety fastener device for fixing an unmanned helicopter cabin provided by an embodiment of the present invention from another perspective;

[0025] Figure 4 A schematic diagram of the assembly structure of a safety fastener device for fixing the cabin of an unmanned helicopter provided in an embodiment of the present invention from a front view perspective;

[0026] Figure 5 A schematic diagram of the assembly structure of a safety fastener device for fixing an unmanned helicopter cabin provided by an embodiment of the present invention from a right-side perspective;

[0027] Figure 6 A schematic diagram of a decomposed explosion structure of a safety fastener device for fixing an unmanned helicopter cabin in one state provided by an embodiment of the present invention;

[0028] Figure 7 A schematic diagram of a completely decomposed exploded structure of a safety fastener device for fixing an unmanned helicopter cabin provided by an embodiment of the present invention;

[0029] Figure 8 A schematic diagram of a completely decomposed and exploded structure of a safety fastener device for fixing an unmanned helicopter cabin provided by an embodiment of the present invention from another perspective;

[0030] Fig. 9 A schematic diagram of the structure of the upper fastener parts in a safety fastener device for fixing the cabin of an unmanned helicopter provided in an embodiment of the present invention;

[0031] Fig.10 A schematic diagram of the structure of the lower fastener parts in a safety fastener device for fixing the cabin of an unmanned helicopter provided in an embodiment of the present invention;

[0032] Fig.11 A schematic diagram of the structure of an annular locking buckle component in a safety fastener device suitable for fixing an unmanned helicopter cabin provided in an embodiment of the present invention.

[0033] Numbers: 1-upper fastener; 11-upper fastener body; 12-positioning pin; 13-U-shaped mounting seat; 14-first pin hole; 15-first groove; 16-first through hole; 2-lower fastener; 21-lower fastener body; 22-positioning hole; 23-I-shaped mounting seat; 24-second pin hole; 25-second groove; 26-second through hole; 3-annular locking buckle; 31-rubber ring portion; 32-sheet lifting portion; 4-quick release pin. DETAILED DESCRIPTION

[0034] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments 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.

[0035] In the description of the present invention, it should be noted that certain words indicating orientation or positional relationships are only for the purpose of facilitating the description of the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0036] The present invention is further described in detail below through specific implementation examples in conjunction with the accompanying drawings.

[0037] Embodiment 1

[0038] See also Figure 1-Figure 11 , Embodiment 1 of the present invention provides a safety fastener device suitable for fixing the cabin of an unmanned helicopter, comprising an upper fastener 1 and a lower fastener 2, an annular locking buckle 3 and a quick-release pin 4; the upper fastener 1 is fixedly connected to the upper cabin cover, and the lower fastener 2 is fixedly connected to the main cabin;

[0039] The upper fastener 1 comprises an upper fastener body 11, a positioning pin 12 arranged at the bottom of the upper fastener body and protruding from the bottom surface, and a U-shaped mounting seat 13 arranged on the front of the upper fastener body; first pin holes 14 are arranged on both sides of the U-shaped mounting seat 13 to facilitate the insertion of the quick-release pin 4; and a first groove 15 is arranged along the circumferential direction of the side wall of the upper fastener body 11;

[0040] The lower fastener 2 includes a lower fastener body 21, a positioning hole 22 arranged on the top surface of the lower fastener body, and an I-shaped mounting seat 23 arranged on the front surface of the lower fastener body; a second pin hole 24 is arranged on the I-shaped mounting seat 23 for facilitating the insertion of the quick-release pin 4; and a second groove 25 is arranged along the circumferential direction of the side wall of the lower fastener body 21;

[0041] The upper fastener 1 and the lower fastener 2 are relatively arranged and assembled, so that the positioning pin 12 on the bottom surface of the upper fastener body 11 is inserted into the positioning hole 22 on the top surface of the lower fastener body 21 to achieve horizontal locking, and the I-shaped mounting seat 23 on the lower fastener body is assembled at the middle position on both sides of the U-shaped mounting seat 13 of the upper fastener body, and the first pin hole 14 and the second pin hole 24 are coaxial to facilitate the insertion of the quick-release pin;

[0042] The first groove 15 on the upper fastener body is connected to the second groove 25 to form a circle of integral grooves, and the annular locking buckle 3 is sleeved in the integral groove formed by the upper fastener and the lower fastener to form a circumferential locking; and the quick-release pin 4 passes through the first pin hole 14 on the U-shaped mounting seat of the upper fastener body and the second pin hole 24 on the I-shaped mounting seat of the lower fastener body to achieve vertical locking.

[0043] By analyzing the main technical contents of the safety fastener device for fixing the cabin of an unmanned helicopter in the first embodiment, it can be known that the safety fastener device for fixing the cabin of an unmanned helicopter (hereinafter referred to as the safety fastener device) mainly designs several key structural parts such as an upper fastener and a lower fastener, an annular locking buckle and a quick-release pin; wherein, the upper fastener is responsible for fixing the upper cabin cover, and the lower fastener is responsible for fixing the main cabin cover; when the upper cabin cover needs to be firmly connected to the main cabin cover, the upper fastener and the lower fastener need to be connected together;

[0044] The connection between the upper fastener and the lower fastener is mainly achieved through three different locking methods to achieve a fast, safe and reliable locking connection; in specific operation, the locating pin 12 on the bottom surface of the upper fastener body is inserted into the locating hole 22 on the top surface of the lower fastener body to first achieve horizontal locking, and at the same time, the I-shaped mounting seat 23 on the lower fastener body is assembled at the middle position on both sides of the U-shaped mounting seat 13 of the upper fastener body, and the relative movement of the two in the horizontal direction can also be further achieved (hence, further locking in the horizontal direction). At this time, the two can only move in the vertical direction; and the first pin hole 14 and the second pin hole 24 are coaxial to facilitate the insertion of the quick-release pin; After that, the first groove 15 on the upper fastener body is connected with the second groove 25 to form a circle of integral grooves, and the annular locking buckle 3 is sleeved in the integral groove formed by the upper fastener and the lower fastener to form circumferential locking; of course, in addition to circumferential locking, there are other bearing structures, relying on the quick release pin 4 to pass through the first pin hole 14 on the U-shaped mounting seat of the upper fastener body and the second pin hole 24 on the I-shaped mounting seat of the lower fastener body, so as to further achieve vertical locking; the researchers found that the safety fastener device designed as above can achieve multiple directions of composite fastening limitation, so as to achieve fast installation and stable and reliable locking action;

[0045] The safety fastener device suitable for fixing the cabin of an unmanned helicopter has a better effect of stabilizing the connection, and has been proven to be more stable after inspection; ultimately, several key structures such as the upper fastener 1 and the lower fastener 2, the annular locking buckle 3 and the quick-release pin 4 are assembled in combination to form a connection The peripheral surface and multiple directions are tightened simultaneously, ensuring the reliability and stability of the connection structure, and meeting the design requirements for fixing the cabin of an unmanned helicopter.

[0046] The specific structure and specific technical effects of the safety fastener device for fixing the cabin of an unmanned helicopter in the embodiment of the present invention are described in detail below:

[0047] Preferably, as an implementable embodiment, the annular locking buckle 3 is a locking buckle with a soft structure.

[0048] In the specific technical scheme of the embodiment of the present invention, the above-mentioned annular locking buckle can select a variety of structural forms, but the annular locking buckle is an annular ring structure, which needs to have a certain amount of deformation during installation, and usually a locking buckle with a soft structure can be selected; the above-mentioned annular locking buckle 3 is the first structural part in the disassembly and assembly order, so a locking buckle with a soft structure should also be preferably used.

[0049] During the specific installation, the first groove 15 and the second groove 25 on the upper fastener body are connected to form a circle of integral grooves, and the annular locking buckle 3 is sleeved on any one of the upper fastener or the lower fastener, and then buckled on the other fastener after pulling to form a circumferential sleeve locking in the corresponding integral groove. (Note that the second groove on the lower fastener body can be partially or completely distributed on the lower fastener body; the second groove part can be formed on the inner side of the lower fastener body, and this design is also for the convenience of installation and to ensure assembly tightness).

[0050] Preferably, as a feasible implementation scheme, the annular locking buckle 3 is a rubber locking buckle.

[0051] In the specific technical solution of the embodiment of the present invention, the annular locking buckle can be made of a variety of materials, such as a high-strength fiber locking buckle, a locking buckle made of high-tensile strength engineering plastic material, or a rubber locking buckle;

[0052] The biggest feature of the rubber locking buckle is that it has the advantages of elasticity, wear resistance, high structural strength, etc. Of course, in the technical solution of this embodiment, high-strength rubber, such as modified synthetic rubber, can be selected, which has very high tensile strength, and its elasticity and tension are very suitable for the safety buckle device for fixing the unmanned helicopter cabin.

[0053] Preferably, as an implementable embodiment, the rubber locking buckle (annular locking buckle 3) includes an annular rubber ring portion 31 and a sheet-like lifting portion 32 arranged at the top position of the rubber ring portion.

[0054] The rubber locking buckle provided in the embodiment of the present invention has a specific shape design. In the conventional technology, there has never been a design in which the two buckles form an integral annular groove, nor has there been a rubber locking buckle design in the above structural form.

[0055] The above-mentioned rubber locking buckle is mainly composed of a ring-shaped rubber ring part and a sheet-like pulling part arranged at the top position of the rubber ring part; the sheet-like pulling part is also one of the design structures. During installation, the bottom of the rubber locking buckle can be first sleeved in the second groove of the lower buckle, and then pulled by using the sheet-like pulling part, and then the top of the above-mentioned rubber locking buckle is also buckled in the first groove of the upper buckle to achieve assembly and installation.

[0056] Preferably, as an implementation scheme, the first groove 15 and the second groove 25 are both grooves with semicircular cross-sections, and the cross-section of the annular locking buckle 3 is circular.

[0057] In the specific structure of the rubber locking buckle provided in the embodiment of the present invention, the first groove 15 and the second groove 25 are both grooves with semicircular cross-sections. When the annular locking buckle 3 is assembled and installed with the upper fastener and the lower fastener, since the cross-section of the annular locking buckle 3 is circular, the circular cross-section on the annular locking buckle 3 can be adapted to the semicircular groove to achieve the coordination between the overall groove and the annular locking piece.

[0058] Preferably, as an implementable embodiment, a first through hole 16 perpendicular to the front surface of the upper fastener body 11 is also provided on the front surface of the upper fastener body; the first through hole 16 of the upper fastener body 11 is passed through a rivet and is specifically used for fixed connection with the upper hatch.

[0059] A second through hole 26 perpendicular to the front surface of the lower fastener body 21 is also provided on the front surface of the lower fastener body; the second through hole 26 of the lower fastener body 21 is passed through a rivet for fixed connection with the main cabin.

[0060] In the specific technical solution provided in the embodiment of the present invention, the upper fastener body 11 and the lower fastener body 21 need to be installed respectively on the upper cabin cover and the main cabin structure; in the specific structural design, the R&D personnel designed a first through hole 16 in the direction vertical to the front of the upper fastener body; during the specific installation, the first through hole 16 of the upper fastener body 11 is fixedly connected to the upper cabin cover through a rivet.

[0061] Similarly, a second through hole 26 perpendicular to the front surface of the lower fastener body 21 is provided on the front surface thereof; during the specific installation, the second through hole 26 is fixedly connected to the main cabin body through rivets.

[0062] Preferably, as a feasible implementation scheme, the quick-release pin is an R-shaped cotter pin.

[0063] In the specific structure of the rubber locking buckle provided in the embodiment of the present invention, the quick-release pin can be selected from a variety of structural forms, and the quick-release pin is preferably an R-shaped cotter pin; the R-shaped cotter pin needs to be made of high-quality steel and a rigid material with good elasticity. The straight rod of the R-shaped cotter pin is inserted into the first pin hole 14 and the second pin hole 24, and then the bent portion of the R-shaped cotter pin is used to achieve limited locking.

[0064] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A safety fastener device suitable for fixing the cabin of an unmanned helicopter, characterized in that: It includes an upper fastener and a lower fastener, an annular locking buckle and a quick-release pin; the upper fastener is fixedly connected to the upper cabin cover, and the lower fastener is fixedly connected to the main cabin body; Wherein, the upper fastener comprises an upper fastener body, a positioning pin arranged at the bottom of the upper fastener body and protruding from the bottom surface, and a U-shaped mounting seat arranged on the front side of the upper fastener body; first pin holes for facilitating the insertion of the quick-release pin are arranged on both sides of the U-shaped mounting seat; and a first groove is arranged along the circumferential direction of the side wall of the upper fastener body; The lower fastener comprises a lower fastener body, a positioning hole arranged on the top surface of the lower fastener body, and an I-shaped mounting seat arranged on the front surface of the lower fastener body; the I-shaped mounting seat is provided with a second pin hole for facilitating the insertion of the quick-release pin; and a second groove is provided along the circumferential direction of the side wall of the lower fastener body; The upper fastener and the lower fastener are arranged and assembled relative to each other, so that the locating pin on the bottom surface of the upper fastener body is inserted into the locating hole on the top surface of the lower fastener body to realize horizontal locking, and the I-shaped mounting seat on the lower fastener body is assembled at the middle position on both sides of the U-shaped mounting seat of the upper fastener body, and the first pin hole is coaxial with the second pin hole to facilitate the insertion of the quick-release pin; and the first groove on the upper fastener body is connected with the second groove to form a circle of integral groove, and the annular locking buckle is sleeved in the integral groove formed by the upper fastener and the lower fastener to form a circumferential locking; and the quick-release pin passes through the first pin hole on the U-shaped mounting seat of the upper fastener body and the second pin hole on the I-shaped mounting seat of the lower fastener body to realize vertical locking.

2. The safety fastener device for fixing the cabin of an unmanned helicopter according to claim 1, characterized in that: The annular locking buckle is a locking buckle with a soft structure.

3. The safety fastener device for fixing the cabin of an unmanned helicopter according to claim 1, characterized in that: The annular locking buckle is a rubber locking buckle.

4. The safety fastener device for fixing the cabin of an unmanned helicopter as claimed in claim 3, characterized in that: The rubber locking buckle comprises a ring-shaped rubber ring portion and a sheet-shaped lifting portion arranged at the top position of the rubber ring portion.

5. The safety fastener device for fixing the cabin of an unmanned helicopter according to claim 2, characterized in that: The first groove and the second groove are both grooves with semicircular cross-sections, and the cross-section of the annular locking buckle is circular.

6. The safety fastener device for fixing the cabin of an unmanned helicopter according to claim 1, characterized in that: A first through hole perpendicular to the front surface of the upper fastener body is also provided on the front surface of the upper fastener body; the first through hole of the upper fastener body is passed through a rivet and is specifically used for fixed connection with the upper hatch.

7. The safety fastener device for fixing the cabin of an unmanned helicopter according to claim 6, characterized in that: A second through hole perpendicular to the front surface of the lower fastener body is also provided on the front surface of the lower fastener body; the second through hole of the lower fastener body is passed through a rivet and is specifically used for fixed connection with the main cabin body.

8. The safety fastener device for fixing the cabin of an unmanned helicopter according to claim 6, characterized in that: The quick-release pin is an R-shaped cotter pin.

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