Aircraft model cabin ridge structure and fuselage connecting device

Abstract

The utility model discloses an airplane model cabin ridge structure and body connecting device, including cabin ridge and body mortise -and -tenon connection, the body top has been seted up with recess for cabin ridge fixed, the cabin ridge bottom is provided with and inserts the part, the recess is seted up with and the recess intercommunication and top opening slot, the insert part side is provided with and the plug -in block corresponding with slot, through the setting of mortise -and -tenon structure can realize the stability of increasing connection when connecting, and will not destroy the external streamline of structure body itself, wherein through increasing the plug -in block at the insert part side can further increase the stability after connecting.

Description

Technical Field

[0001] This utility model relates to the field of aircraft structure technology, and in particular to a connection device between the spine structure and fuselage of an aircraft model. Background Technology

[0002] The "cabin ridge" is a very prominent feature of the back of an aircraft fuselage. It is usually a raised structure that starts behind the cockpit and extends rearward along the back of the fuselage. It is not only part of the aircraft's shape, but also plays an important role.

[0003] The main functions of the ridge are to provide internal space, improve airflow, contribute to stability, and accommodate equipment. The internal space is used to lay out wiring and pipelines, streamline the airflow to make it smoother, reduce airflow separation, reduce flight drag, and increase the area of ​​the fuselage dorsal fin to provide additional directional stability.

[0004] Currently, during the wind-driven testing of the ridge, it is necessary to conduct detailed research on the airflow effect and measure data such as the distribution of pressure on the fuselage surface. Several sensors need to be installed in various parts of the ridge, which will disassemble the ridge into a multi-piece structure. Although the ridge is mostly a disposable item, its manufacturing precision requirements are very high. In terms of bonding, the current manual application of glue may result in insufficient fixing strength during testing and cracks are prone to occur at the glued areas during skin assembly, which will hinder subsequent processes. Utility Model Content

[0005] The purpose of this utility model is to overcome the shortcomings of the prior art and provide a connection device between the spine structure and the fuselage of an aircraft model, a device that can firmly fix the spine and the fuselage.

[0006] The purpose of this utility model is achieved through the following technical solution: a connection device between the ridge structure and the fuselage of an aircraft model, wherein the ridge is mortised and tenoned with the fuselage, a groove for fixing the ridge is provided on the top of the fuselage, an insert is provided at the bottom of the ridge, a slot communicating with the groove and having an opening at the top is provided in the groove, and a plug corresponding to the slot is provided on the side of the insert.

[0007] The mortise and tenon structure can increase the stability of the connection without destroying the external streamline of the structure itself. The stability after the connection can be further increased by adding a plug on the side of the embedded part.

[0008] The present invention is further configured such that: the slot is a straight groove with a trapezoidal cross-section, and the insert is a straight column structure with a trapezoidal cross-section.

[0009] The installation method using straight slots and straight column structures is the simplest and least prone to installation failures, and it can also reduce resonance.

[0010] The present invention is further configured such that: the groove is an inclined groove structure, and the embedding part is an inclined column structure.

[0011] The inclined groove structure and the inclined column structure have higher processing precision requirements, but the effect after installation is better. They can achieve a three-dimensional locking effect and are more effective for resonance.

[0012] The present invention is further configured such that: the slot is a trapezoidal oblique groove, and the insert is an inclined columnar structure with a trapezoidal cross-section.

[0013] The machining precision requirements for slanted slots and inclined columnar structures are higher, but the performance after installation is better, and they can achieve a similar three-dimensional locking effect, which is more effective for resonance.

[0014] The present invention is further configured such that: an elastic fixing member is provided on the insert block, and a fixing groove is provided in the groove.

[0015] The elastic fastener can achieve a fixed rebound locking effect.

[0016] The present invention is further configured such that: a receiving cavity is provided on the side of the insert block near the groove, a locking pin is provided in the receiving cavity, a lateral spring is provided between the locking pin and the inner wall of the receiving cavity, and the bottom of the lateral spring is rotatably connected to the inner side wall of the receiving cavity.

[0017] The locking mechanism effectively locks the ridge of the cabin and provides a notification when the lock is in place, ensuring a consistent installation result.

[0018] The present invention is further configured such that: a receiving cavity is provided on the side of the insert block near the groove, a locking pin is provided in the receiving cavity, a lateral spring is provided between the locking pin and the inner wall of the receiving cavity, hinge posts are provided on both sides of the middle part of the locking pin, a guide groove is provided on the corresponding hinge post of the receiving cavity, and a bottom spring is also provided between the bottom of the locking pin and the receiving cavity.

[0019] The bottom spring design effectively pushes out the locking pin, achieving some mechanical redundancy and reducing machining accuracy.

[0020] The present invention has the following beneficial effects: the mortise and tenon structure can increase the stability of the connection without destroying the external streamline of the structure itself. The stability after connection can be further increased by adding a plug on the side of the embedded part. Attached Figure Description

[0021] Figure 1 This is a front view of the ridge of the cabin in an embodiment of this utility model;

[0022] Figure 2This is a bottom view of the ridge of the cabin in an embodiment of this utility model;

[0023] Figure 3 This is an embodiment of the present utility model. Figure 2 Enlarged view of point A;

[0024] Figure 4 This is a rear view of the ridge of the cabin in an embodiment of this utility model;

[0025] Figure 5 This is a partial schematic diagram of the elastic fastener in an embodiment of this utility model. Figure 1 ;

[0026] Figure 6 This is a partial schematic diagram of the elastic fastener in an embodiment of this utility model. Figure 2 .

[0027] In the diagram: 1. Ridge; 2. Embedded part; 3. Elastic fastener; 31. Lateral spring; 32. Bottom spring; 33. Locking pin; 34. Guide groove; 35. Fixing groove. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can typically be arranged and designed in various different configurations.

[0029] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0030] It should be noted that, where there is no conflict, the embodiments and features in the embodiments of this utility model can be combined with each other.

[0031] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0032] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use, or the orientation or positional relationship commonly understood by those skilled in the art. They are only used for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first," "second," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0033] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0034] The following is in conjunction with the appendix Figure 1-6 The present invention will be described in further detail, but the scope of protection of the present invention is not limited to the following.

[0035] like Figure 1 As shown, an aircraft model cabin spine 1 structure is connected to the fuselage. The cabin spine 1 is tenon-and-mortise connected to the fuselage. A groove for fixing the cabin spine 1 is provided on the top of the fuselage. An insert part 2 is provided at the bottom of the cabin spine 1. A slot communicating with the groove and having an opening at the top is provided in the groove. A plug block corresponding to the slot is provided on the side of the insert part 2.

[0036] The mortise and tenon structure can increase the stability of the connection without destroying the external streamline of the structure itself. The stability after the connection can be further increased by adding a plug on the side of the insert 2.

[0037] Preferably, the groove has several slots, and the side of the insert 2 has several inserts corresponding to the slots, with the slots evenly spaced apart from each other.

[0038] The slot is a straight groove with a trapezoidal cross-section, and the insert is a straight column structure with a trapezoidal cross-section. The installation through the straight groove and straight column structure is the simplest and least prone to installation failure, and it can also reduce resonance.

[0039] As a preferred option, the groove is a slanted groove structure and the embedded part 2 is a slanted column structure. The slanted groove structure and the slanted column structure have higher processing precision requirements, but the effect after installation is better. They can achieve a three-dimensional locking effect and are more effective for resonance.

[0040] The slot is a slanted groove with a trapezoidal cross-section, and the insert is an inclined columnar structure with a trapezoidal cross-section. The slanted groove and the inclined columnar structure require higher machining precision, but they have better performance after installation and can achieve a three-dimensional locking effect, which is more effective for resonance.

[0041] The insert block is provided with an elastic fastener 3, and a fixing groove 35 is provided in the groove; the elastic fastener 3 can achieve a fixed rebound locking effect.

[0042] The side of the insert block near the groove has a receiving cavity, and a locking pin 33 is provided in the receiving cavity. A lateral spring 31 is provided between the locking pin 33 and the inner wall of the receiving cavity. The bottom of the lateral spring 31 is rotatably connected to the inner side wall of the receiving cavity. The locking pin 33 can effectively lock the ridge 1 and also provide a prompt after locking, thus achieving a uniform installation effect.

[0043] The insert block has a receiving cavity on the side near the groove. A locking pin 33 is provided in the receiving cavity. A lateral spring 31 is provided between the locking pin 33 and the inner wall of the receiving cavity. Hinged posts are provided on both sides of the middle part of the locking pin 33. A guide groove 34 is provided on the corresponding hinged post of the receiving cavity. A bottom spring 32 is also provided between the bottom of the locking pin 33 and the receiving cavity. The bottom spring 32 can effectively push the locking pin 33 out to achieve some mechanical redundancy and reduce machining accuracy.

[0044] The present invention has the following beneficial effects: the mortise and tenon structure can increase the stability of the connection without destroying the external streamline of the structure itself. The stability after connection can be further increased by adding a plug on the side of the embedded part 2.

[0045] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A connection device between the spine (1) structure and the fuselage of an aircraft model, characterized in that: The ridge (1) is tenon-jointed to the fuselage. The top of the fuselage has a groove for fixing the ridge (1). The bottom of the ridge (1) has an insert (2). The groove has a slot that communicates with the groove and has an opening at the top. The side of the insert (2) has a plug corresponding to the slot.

2. The connection device between the aircraft model spine (1) structure and the fuselage according to claim 1, characterized in that: The slot is a straight groove with a trapezoidal cross-section, and the insert is a straight column structure with a trapezoidal cross-section.

3. The connection device between the spine (1) structure and the fuselage of an aircraft model according to claim 1, characterized in that: The groove is a slanted groove structure, and the embedded part (2) is a slanted column structure.

4. The connection device between the aircraft model spine (1) structure and the fuselage according to claim 3, characterized in that: The slot is a trapezoidal oblique groove, and the insert is an inclined columnar structure with a trapezoidal cross-section.

5. The connection device between the spine (1) structure and the fuselage of an aircraft model according to any one of claims 1-4, characterized in that: The insert is provided with an elastic fastener (3), and the groove is provided with a fixing groove (35).

6. The connection device between the spine (1) structure and the fuselage of an aircraft model according to claim 5, characterized in that: The insert has a receiving cavity on the side near the groove. A locking pin (33) is provided in the receiving cavity. A lateral spring (31) is provided between the locking pin (33) and the inner wall of the receiving cavity. The bottom of the lateral spring (31) is rotatably connected to the inner wall of the receiving cavity.

7. The connection device between the spine (1) structure and the fuselage of an aircraft model according to claim 5, characterized in that: The insert has a receiving cavity on the side near the groove. A locking pin (33) is provided in the receiving cavity. A lateral spring (31) is provided between the locking pin (33) and the inner wall of the receiving cavity. Hinges are provided on both sides of the middle part of the locking pin (33). A guide groove (34) is provided on the corresponding hinge of the receiving cavity. A bottom spring (32) is also provided between the bottom of the locking pin (33) and the receiving cavity.

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