CN215073320U - Strong impact resistant structure for active beacon machine - Google Patents

Abstract

The utility model relates to an active beacon machine strong impact resistance structure belongs to aerospace technical field, and active beacon machine strong impact resistance structural design field on concretely relates to aerospace craft. The utility model discloses spacing boss of cooperation button switch (1), the fixed protection casing of cable plug (2), LED fog lamp protection casing (5), buffering glue (7), damping pad (10), damping cornerite (13), guaranteed that equipment still can normally work under strong impact (the impact magnitude is greater than thirty thousand times acceleration of gravity).

Description

Strong impact resistant structure for active beacon machine

Technical Field

The utility model relates to an anti strong impact structure for active beacon machine belongs to aerospace technical field, and concretely relates to active beacon machine anti strong impact technology field on the aerospace craft, strong impact indicates that external impact force is greater than thirty thousand times acceleration of gravity.

Background

After the rocket is launched and lifted off, the fairing throwing action is finished in the second-stage rocket flying section. In order to ensure that the electronic equipment in the fairing can still normally work under strong impact (the impact magnitude is more than thirty thousand times of gravity acceleration) after falling to the ground at high altitude, the impact resistance of the electronic equipment needs to be improved. Previous reinforcement by increasing wall thickness to increase structural strength has not met the need for strong impact resistance.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a problem that the technique was solved: the defects of the prior art are overcome, and the strong impact resistant structure for the active beacon machine is provided.

The technical solution of the utility model is that:

a strong impact resistant structure for an active beacon machine is used for protecting the active beacon machine when being impacted by the outside;

the strong impact resistant structure comprises a limit boss designed on a power switch protection cover plate of an active beacon machine, and the power switch is reinforced and protected;

the strong impact resistant structure also comprises a cable plug fixing protective cover which is designed on the cable of the active beacon machine to reinforce and protect the cable;

the strong impact resistant structure also comprises an LED fog lamp protective cover which is arranged on the LED fog lamp of the active beacon machine to reinforce and protect the LED fog lamp;

the strong impact resistant structure also comprises a buffer glue filled in the active beacon machine to protect the components;

the strong impact resistant structure also comprises a vibration damping pad arranged on the active beacon machine for carrying out impact protection on the whole machine;

the strong impact resistant structure also comprises vibration reduction wrap angles arranged on four corners of the active beacon machine and the mounting lug pieces to carry out impact protection on the protruding position of the whole machine.

A limit boss is designed on the power switch protection cover plate to limit the button switch, so that the button switch is prevented from being automatically closed under strong impact;

the cable plug fixing protective cover is designed to reinforce and protect the cable, so that the plug and the socket are prevented from being vibrated open under strong impact to influence electrical property connection;

the LED fog lamp protective cover is designed to reinforce and protect the LED fog lamp, so that the LED fog lamp can work normally after strong impact of equipment is ensured;

the buffer glue is poured into the equipment to protect the components;

impact protection is carried out on the whole machine through the mounting foot vibration damping pad;

impact protection is carried out on the protruding position of the whole machine through the four-corner vibration reduction wrap angle and the mounting lug piece vibration reduction wrap angle, and impact of the outside on equipment is reduced.

Advantageous effects

The utility model discloses the fixed protection casing of spacing boss of cooperation, cable plug, LED fog lamp protection casing, buffering are glued, the damping fills up, the damping cornerite, have protected power button switch, cable plug, LED fog lamp, components and parts, power, equipment complete machine, have guaranteed still can normally work under strong impact (the impact magnitude is greater than thirty thousand times acceleration of gravity).

The utility model relates to an active beacon machine strong impact resistance structure belongs to aerospace technical field, and active beacon machine strong impact resistance structural design field on concretely relates to aerospace craft. The utility model discloses spacing boss of cooperation toggle switch, the fixed protection casing of cable plug, LED fog lamp protection casing, buffering glue damping pad, damping cornerite have guaranteed that equipment still can normally work under strong impact (the impact magnitude is greater than thirty thousand times acceleration of gravity).

Drawings

FIG. 1 is a schematic view of a limit boss on a power switch protection cover plate of the present invention;

fig. 2 is a schematic view of the cable plug fixing protective cover of the present invention;

fig. 3 is a schematic view of the protective cover of the LED fog lamp of the present invention;

FIG. 4 is a schematic view of the single-module glue-pouring protection of the present invention;

FIG. 5 is a schematic view of the glue-pouring protection of the whole machine of the present invention;

FIG. 6 is a schematic view of the installation of the damping pad of the installation foot of the present invention;

fig. 7 is the utility model provides a four corners damping cornerite and installation auricle damping cornerite installation schematic.

Detailed Description

The utility model provides an anti strong impact structure, includes spacing boss 1, the fixed protection casing 2 of cable plug, LED fog lamp protection casing 3, cushion gum 7, damping pad 10, damping cornerite 13. By the comprehensive application of the measures, the equipment can still work normally under strong impact (the impact magnitude is more than thirty thousand times of the gravity acceleration).

The power switch protection cover plate is provided with a limit boss:

a rechargeable power supply is built in the device. The power switch protective cover plate is opened, the power button switch can be operated, and the power supply is controlled to be switched on and off. Before the rocket is launched, a power switch protective cover plate needs to be opened, the power switch is shifted to be turned on from the off direction, and a power supply works. The power switch is of a spring structure, and at the moment that the equipment falls to the ground, a huge impact force may vibrate the control handle of the power switch from the 'on' side to the 'off' side, and the power supply is turned off, so that the equipment cannot send signals outwards, and a limit structure needs to be designed to ensure that the toggle switch works normally.

The switch limiting structure is designed on the power switch protection cover plate shown in figure 1. When the power switch protective cover plate is opened, the power supply button switch can be bidirectionally toggled between on and off, but after the power switch protective cover plate is closed, the limiting boss 1 blocks the movement of the button switch, and the power switch can only be positioned on one side of the on or off. Even if the impact force is larger at the moment that the equipment falls to the ground, the power switch cannot vibrate to the off side due to external force, and the continuous work of the power supply is ensured.

Designing a cable plug fixing protective cover:

a high-frequency cable for transmitting radio-frequency signals is arranged in the equipment, and the plug and the socket are fixed in an interference fit mode. At the moment the device is grounded, the cable plug risks to be separated from the socket under the action of a strong impact force. In order to enhance the impact resistance of the cable, after the plug and the socket are plugged, the plug protective cover 2 is installed outside, as shown in fig. 2.

During assembly, the plug and the socket are inserted in place, and then the plug protective cover is fixed. To prevent the shield from contacting the metal and metal of the cable plug when the plug shield is assembled, a compliant pad is required between the shield and the plug. Through designing the plug protection casing 2, the cooperation flexible pad has guaranteed that the cable plug inserts under the strong impact and closes safely, and the goal reaches.

Designing a protective cover of the LED fog lamp:

the LED fog lamp 3 is selected from a flexible LED lamp strip, can be cut into a lamp strip section of 2.5cm, and can be independently lightened. A plurality of LED fog lamps are installed on the outer side of the device, and searching is facilitated. The LED fog lamp has the risk of being damaged by collision at the moment when the equipment falls to the ground. In order to ensure the normal work of the LED fog lamp, a flexible rubber sleeve 4 and a metal protective cover 5 are required to be added. The protective cover not only provides structural protection for the LED fog lamp, but also ensures that the light of the LED fog lamp can be observed outside while the protection is carried out. The LED fog lamp protection is shown in figure 3.

Filling and sealing buffer glue:

in the case of a strong impact on the device, the weakest point is the electronic component. The component 6 is easy to generate the conditions of pin fracture, solder joint cracking and the like under strong impact, once the solder joint is not in contact with the pin, the electrical property of the equipment cannot be ensured, so the strengthening of the component is mainly considered. The components 6 are welded on the printed board, after debugging is finished, a layer of buffer glue 7 is poured outside the components, and after the glue solution is solidified, the glue solution and the components are combined into a whole, so that the shock resistance of the components is improved.

Before glue pouring is carried out on the printed board welded with the components, the protection work of the components is required to be done. The buffer glue is insulating liquid, and if the buffer glue enters the socket hole which needs to be plugged, the electrical connection of the plug after plugging can be seriously affected, so that the buffer glue encapsulation protection must be made. For the components needing protection, a protective cover 8 is welded around the components for sealing, so that glue is prevented from entering the interior of the protective cover. And sealing gaps around the printed board by GD-414 sealant to prevent the buffer glue 7 from flowing into the back of the printed board, as shown in figure 4.

And after protection, the single module is filled with glue, and the single module comprises a front side and a back side of the module. The distance between the glue solution and the top of the module is 1-3 mm.

After single module encapsulating, to the complete machine encapsulating, big devices such as protection power, adopt twice encapsulating mode to accomplish the complete machine encapsulating through two encapsulating mouths 9, height control during the complete machine encapsulating, guarantee that the cushion gum does not flow into components and parts that need electric connection such as socket hole, see figure 5.

Designing a damping pad for a mounting foot:

if the equipment and the installation bottom plate encounter strong impact together, the damping pad 10 needs to be placed on 6 installation feet of the equipment, and in order to ensure the installation of the damping pad, the fixing bush 11 and the gasket 12 need to be designed according to the thickness of the equipment installation lug, as shown in fig. 6. During final assembly, the bushing 11 and the damping pad 10 are installed first, and then the gasket 12 is installed. To ensure the damping effect, the rubber properties were adjusted to those shown in Table 1.

TABLE 1 characteristics of the sizing materials

Shore hardness	42±2
		Modulus of elasticity in shear (MPa)	1.5±0.5
Loss factor	≥0.15
		Tensile Strength (MPa)	≥6

Designing four-corner vibration reduction wrap angles and installing lug piece vibration reduction wrap angles:

in order to improve the shock resistance of the whole machine, 6 mounting lugs and 8 exposed corners of the equipment are required to be provided with mounting lug damping wrap angles and four-corner damping wrap angles 13, and in order to ensure the smooth mounting of the damping wrap angles, a supporting lining 14 is designed, as shown in fig. 7. The support bushing 14 prevents excessive pressure generated by directly fixing the vibration-damping wrap angle with a screw, while securing the fixing strength of the vibration-damping wrap angle.

Claims (5)

1. An impact-resistant structure for an active beacon, characterized by:

the anti-impact structure comprises a limit boss (1) designed on a power switch protection cover plate of an active beacon machine, and the power switch is reinforced and protected;

the anti-impact structure also comprises a cable plug fixing protective cover (2) which is designed on the cable of the active beacon machine to reinforce and protect the cable;

the anti-impact structure also comprises an LED fog lamp protective cover (5) which is arranged on the LED fog lamp of the active beacon machine to reinforce and protect the LED fog lamp;

the anti-impact structure also comprises a buffer glue (7) filled in the active beacon machine to protect the components;

the shock-resistant structure also comprises a shock-absorbing pad (10) arranged on the active beacon machine for carrying out shock protection on the whole machine;

the shock-resistant structure also comprises shock-absorbing wrap angles (13) which are arranged on four corners and mounting lugs of the active beacon machine and used for carrying out shock protection on the projecting position of the whole machine.

2. An impact-resistant structure for an active beacon as claimed in claim 1, characterised in that: the impact-resistant structure is used for protecting the active beacon machine when being impacted by the outside.

3. An impact-resistant structure for an active beacon as claimed in claim 1, characterised in that: a limit boss (1) is designed on the power switch protection cover plate and used for limiting the toggle switch and preventing the toggle switch from being automatically closed under strong impact.

4. An impact-resistant structure for an active beacon as claimed in claim 1, characterised in that: design fixed protection casing of cable plug (2) and consolidate the protection to the cable, prevent to strike down the plug socket by force and shake and open, influence the electrical property connection.

5. An impact-resistant structure for an active beacon as claimed in claim 1, characterised in that: the LED fog lamp protective cover (5) is designed to reinforce and protect the LED fog lamp, so that the LED fog lamp can work normally after strong impact of equipment.

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