Joint device with buffering and damping functions

Abstract

The utility model belongs to the field of design of installation structures in aircraft cabins, and provides a connector device with buffering and vibration reduction functions, which comprises a cabin 1, a circuit board 2, a bolt 3, a rigid body unit 4, a flexible body unit 5, a gasket 6, a self-locking nut 7 and a sunk screw 8. The cabin body 1 is an equal straight thin wall, the circuit boards 2 are modules of an integrated functional structure, and the rigid body units 4 are installed between the two circuit boards 2 at intervals; the bolt 3 sequentially penetrates through the circuit board 2, the rigid body unit 4, the circuit board 2 and the gasket 6 to be screwed with the self-locking nut 7, so that the multi-layer circuit board is fixed in groups; the rigid body unit 4 and the cabin body 1 are directly fixed through the sunk screw 8, and the flexible body unit 5 is arranged between the rigid body unit 4 and the bolt 2 in a spaced mode in the fixing process. Rigid contact between the circuit board and the cabin body can be effectively avoided, vibration impact of the circuit board is reduced, the contact effect of the resistor elements is improved, and therefore the reliability of products is improved, and the service life of the products is prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of aircraft cabin inner mounting structure design field, in particular to a kind of joint device with buffer damping function. BACKGROUND

[0002] At present, aircraft presents blowout development mode, various aircrafts with specific functions are endless. With the wide appearance of aircraft, how to improve voyage is the eternal pursuit of each research unit. Now, all kinds of aircrafts are in pursuit of lightweight design, to reduce take-off weight, reduce fuel consumption and increase voyage. At present, lightweight design mainly starts from structure optimization and light material, and some aircrafts even cancel the external packaging shell, and are directly installed on the structure cabin by circuit board. Although lightweight design is beneficial to improve voyage, the stiffness and strength of aircraft structure cabin are reduced, and the load deformation is intensified. The vibration of aircraft is more obvious during hanging machine and free flight stage, so that the internal components bear larger vibration level, which reduces the service life and reliability of components on various circuit boards. SUMMARY

[0003] The utility model aims at providing a kind of connecting joint device with buffer damping function, especially for the form that circuit board is directly connected with cabin, increase buffer damping joint, can obviously reduce vibration level, improve the reliability and service life of product.

[0004] The technical scheme of the utility model is as follows:

[0005] The utility model provides a kind of joint device with buffer damping function, including cabin 1, circuit board 2, bolt 3, rigid body unit 4, flexible body unit 5, washer 6, self-locking nut 7, countersunk screw 8, cabin 1 is equal straight thin-walled structure, circuit board 2 is a kind of integrated functional structure module, two circuit boards 2 are installed with rigid body unit 4 with interval, bolt 3 is in turn through circuit board 2, rigid body unit 4, circuit board 2, washer 6 and self-locking nut 7 is screwed, realizes multilayer circuit board group fixing;Countersunk screw 8 passes through the countersunk hole on cabin 1, is fixedly connected with rigid body unit 4, realizes that circuit board 2 is fixedly installed on cabin 1.

[0006] Further, the rigid body unit 4 is designed with two circular holes 41 along the heading, and one threaded hole 42 is designed radially;The circular hole 41 is used for installing flexible body unit 5, so that bolt 3 passes through the circular hole 41 of rigid body unit 4 with flexible body unit 5, to avoid direct contact between bolt 3 and rigid body unit 4, realize buffer damping function.

[0007] Further, the flexible body unit 5 includes a cylindrical structure 52 and a flange structure 51, and the flexible body unit 5 is embedded in the rigid body unit circular hole 41, and two groups of circular holes 41 are embedded in one piece, wherein the cylindrical structure 52 of the flexible body unit 5 is matched with the circular hole 41 of the rigid body unit to form a shaft hole, and the radial direction vibration impact is buffered.

[0008] Further, the flange structure 51 is attached to the end face of the circular hole 41, and the axial direction vibration impact is buffered.

[0009] Further, the circuit board 2 is designed with two through holes at four corner positions, and the bolt 3 passes through the through hole, so that the circuit board 2 and the rigid body unit 4 are fixedly connected.

[0010] Further, four bosses 11 are designed inside the cabin body 1 along the circumference, which are used to ensure the depth of the countersunk hole 12;

[0011] Further, the countersunk screw 8 passes through the countersunk hole 12 and is screwed with the threaded hole 42 on the rigid body unit 4, so that the circuit board is installed and fixed on the cabin body 1 after being grouped.

[0012] The beneficial effects of the utility model are as follows:

[0013] 1. The circuit board connecting device with the buffering and damping functions provided by the utility model not only effectively solves the lightweight design and improves the effective range, but also adopts modular design for the circuit board, the electrical interface and the mechanical interface, further reduces the shell weight, and avoids the complexity caused by the interaction and crosslinking between the pieces.

[0014] 2. The circuit board connecting device with the buffering and damping functions provided by the utility model ensures a certain gap between the circuit boards, which is convenient for laying electronic elements on the two end faces of the circuit board and facilitates heat dissipation of the electronic elements.

[0015] 3. The flexible body unit provided by the utility model effectively reduces the radial and axial vibration impact of the circuit board, and improves the reliability and service life of the circuit board. DETAILED DESCRIPTION

[0016] Figure 1 It is a three-dimensional model diagram of the joint device of the utility model;

[0017] Figure 2 It is an exploded view of the joint device of the utility model;

[0018] Figure 3 It is a schematic view of the rigid body unit of the joint device of the utility model;

[0019] Figure 4 It is a schematic view of the flexible body unit of the joint device of the utility model;

[0020] Figure 5 The joint device cabin body structure schematic diagram of the utility model.

[0021] Among them: 1 - cabin, 2 - circuit board, 3 - bolt, 4 - rigid body unit, 5 - flexible body unit, 6 - washer, 7 - self-locking nut, 8 - countersunk screw, 11 - boss, 12 - countersunk hole, 41 - round hole, 42 - threaded hole, 51 - flange structure, 52 - cylindrical structure. DETAILED DESCRIPTION

[0022] This part is the embodiment of the utility model, for explaining and illustrating the technical scheme of the utility model. In the case of no conflict, the embodiments of the utility model and the features in the embodiments can be combined with each other.

[0023] The specific embodiments of the utility model are further described in detail below in combination with the drawings and embodiments. The following embodiments are used to illustrate the utility model, but not to limit the scope of the utility model.

[0024] As Figure 1 , Figure 2 , Figure 5 The utility model provides a joint device with buffering and damping functions, which comprises a cabin 1, a circuit board 2, a bolt 3, a rigid body unit 4, a flexible body unit 5, a washer 6, a self-locking nut 7 and a countersunk screw 8. The cabin 1 is an equal-thickness thin-walled structure made of lightweight metal material or composite material. The circuit board 2 is a module with integrated functions. The rigid body unit 4 is installed between two circuit boards 2 to ensure the heat dissipation requirement between the circuit boards and the electronic component installation requirement on both sides of the circuit boards. The bolt 3 is sequentially threaded through the circuit board 2, the rigid body unit 4, the circuit board 2, the washer 6 and the self-locking nut 7 to realize the fixed installation of the multi-layer circuit board (only two layers of circuit boards are shown for convenience of description).

[0025] The circuit board 2 is provided with two through holes at each of the four corner positions, and the bolt 3 is threaded through the through holes to realize the grouping of the circuit board 2 and the rigid body unit 4.

[0026] The cabin 1 is provided with four bosses 11 along the circumference to ensure the depth of the countersunk hole 12.

[0027] The countersunk screw 8 is threaded through the countersunk hole 12 and screwed with the threaded hole 42 on the rigid body unit 4 to realize the fixed installation of the grouped circuit board on the cabin.

[0028] As Figure 3 , Figure 4As shown, the rigid body unit 4 is designed with two circular holes 41 along the heading direction and one threaded hole 42 along the radial direction; the circular holes 41 are used to install the flexible body unit 5, so that the bolt 3 passes through the circular hole 41 of the rigid body unit 4 and is cushioned by the cylindrical structure 52 of the flexible body unit 5, avoiding direct contact between the bolt 3 and the rigid body unit 4, and achieving the function of buffering and damping;

[0029] The flexible body unit 5 is made of a certain hardness of silicone rubber material, and is divided into a cylindrical structure 52 and a flange structure 51; the flexible body unit 5 is embedded in the circular hole 41 of the rigid body unit, and two groups of circular holes 41 are embedded in one piece, wherein the cylindrical structure 52 of the flexible body unit and the circular hole 41 of the rigid body unit form a shaft hole cooperation to buffer the radial vibration impact; the flange structure 51 is attached to the end face of the circular hole 41 to buffer the heading vibration impact.

[0030] Although the preferred embodiments of the present application have been described, those skilled in the art can make additional changes and modifications to the embodiments once they know the basic inventive concept. Therefore, the protection scope of the present application is intended to include the preferred embodiments and all changes and modifications falling within the scope of the present application. Obviously, those skilled in the art can make various modifications and changes to the present application without departing from the spirit and scope of the present application. Thus, if these modifications and changes of the present application fall within the scope of the present application and its equivalent technology, the present application also intends to include these modifications and changes.

Claims

1. A joint device with a buffering damping function, comprising a cabin body (1), a circuit board (2), a bolt (3), a rigid body unit (4), a flexible body unit (5), a gasket (6), a self-locking nut (7), a countersunk screw (8), characterized in that The cabin body (1) is an equal straight thin-walled structure cabin body, the circuit board (2) is a module of integrated function structure, the rigid body unit (4) is installed between the two circuit boards (2) with interval, the bolt (3) is screwed with the self-locking nut (7) through the circuit board (2), the rigid body unit (4), the circuit board (2), the washer (6) and the self-locking nut (7) in turn, the multi-layer circuit board is fixed in groups; The countersunk screw (8) passes through the countersunk hole on the cabin body (1) and is fixedly connected with the rigid body unit (4), so that the circuit board (2) is fixedly installed on the cabin body (1).

2. The joint device having a buffering function according to claim 1, characterized in that The rigid body unit (4) is designed with two circular holes (41) along the heading and one threaded hole (42) in the radial direction; The circular hole (41) is used for installing the flexible body unit (5), the bolt (3) passes through the circular hole (41) of the rigid body unit (4) and is spaced with the flexible body unit (5), so as to avoid the direct rigid contact between the bolt (3) and the circular hole (41) of the rigid body unit (4), and realize the buffering and damping function.

3. The joint device having a buffering function according to claim 1, wherein The flexible body unit (5) includes a cylindrical structure (52) and a flange structure (51), the flexible body unit (5) is embedded in the circular hole (41) of the rigid body unit, wherein the cylindrical structure (52) of the flexible body unit (5) is matched with the circular hole (41) of the rigid body unit to form a shaft hole, and the vibration impact in the radial direction is buffered.

4. The joint device having a buffering function according to claim 3, wherein The flange structure (51) is attached to the end face of the circular hole (41), and the vibration impact in the axial direction is buffered.

5. The joint device having a buffering function according to claim 1, wherein The circuit board (2) is designed with two through holes at four corner positions, the bolt (3) passes through the through hole, and the circuit board (2) and the rigid body unit (4) can be fixedly connected.

6. The joint device having a buffering function according to claim 1, wherein The cabin body (1) is designed with a boss (11) along the circumference, which is used for ensuring the depth of the countersunk hole (12).

7. The joint device having a buffering function according to claim 1, wherein The countersunk screw (8) passes through the countersunk hole (12) and is screwed with the threaded hole (42) on the rigid body unit (4), so that the circuit board is fixed and installed on the cabin body (1) after being grouped.

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