Gyroscope floater sealing structure

Abstract

The utility model relates to a gyroscope floater sealing structure which comprises a frame and a columnar insulator, and the columnar insulator is composed of an insulator outer sleeve and an insulator inner column. The insulator jacket is a cylindrical light jacket of which the inner surface and the outer surface both adopt equal-diameter planes; the insulator inner column adopts an equal-diameter light column structure; the insulator inner column and the insulator outer sleeve are matched in an inside-outside penetrating mode and connected in a sintering mode through insulating glass arranged between the insulator inner column and the insulator outer sleeve. The frame is provided with a lead column hole, and the lead column hole adopts a through hole with a counter bore part at the outer end; the insulator jacket is inserted into the counter bore part of the lead column hole on the frame, and a sealing glue layer is arranged in a fit clearance between the insulator jacket and the counter bore part; the inner end of the insulator jacket is in positioning contact with the bottom surface of the corresponding counter bore part, and the outer part of the outer end of the insulator jacket in the counter bore part is filled with epoxy resin glue, so that the insulator is fixedly connected with the frame in a sealing manner. According to the structure, the dosage of epoxy resin glue is reduced, the exhaust difficulty of the epoxy resin glue is reduced, and the long-term sealing reliability is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of gyroscope sealing, and in particular relates to a sealing structure of a gyroscope float which can improve the long-term sealing reliability of the gyroscope float. Background Art

[0002] In order to lead out the internal component windings and ensure the sealing of the entire float, a certain type of gyroscope float currently uses a lead pin sealing structure. Figure 1-Figure 2 , one end of the gyroscope frame 1 is provided with 6 The through hole is 17.2 mm long and contains 6 The lead column 2 has a single-side gap of 0.4mm between them, and the epoxy resin glue 3 is used to achieve sealing. The potting length of this structure is as deep as 17mm, and it is very difficult to pot without air holes under non-vacuum conditions. The epoxy resin insulating sleeve 4, the poor exhaust during the installation process also affects the sealing effect, resulting in excessive float leakage rate and poor long-term sealing reliability.

[0003] In order to solve the problem of float leakage rate exceeding tolerance and improve the long-term sealing reliability of the gyroscope float, it is necessary to modify the existing lead post potting glue sealing method. Utility Model Content

[0004] The utility model aims at the deficiencies of the prior art and proposes a gyroscope float sealing structure which can reduce the amount of epoxy resin glue used, reduce the difficulty of venting the epoxy resin glue and improve the long-term sealing reliability.

[0005] The above-mentioned purpose of the utility model is achieved through the following technical solutions:

[0006] A gyroscope float sealing structure comprises a frame and an insulator, wherein the columnar insulator is composed of an insulator outer shell and an insulator inner column; the insulator outer shell is a cylindrical optical sleeve with equal diameter surfaces on both the inner and outer surfaces; the insulator inner column adopts an equal diameter optical column structure, and the length of the insulator inner column is greater than the length of the insulator outer shell; the insulator inner column is matched with the insulator outer shell in an inner and outer wearing manner with both ends extending, and the insulator inner column and the insulator outer shell are sintered and connected by an insulating glass arranged therebetween;

[0007] The frame is provided with a lead post hole for installing an insulator, and the lead post hole is a through hole with a countersunk portion at the outer end;

[0008] The insulator sleeve is inserted into the countersunk portion of the lead column hole on the frame, and a sealing glue layer is arranged in the matching gap between the two; the inner end of the insulator sleeve is positioned and contacted with the bottom surface of the corresponding countersunk portion, and the countersunk portion is filled with epoxy resin glue outside the outer end of the insulator sleeve, so that the insulator and the frame form a sealed fixed connection.

[0009] Moreover, a lead-in hole is formed at the tail of the inner column of the insulator, and a half-cut surface arranged in an inclined manner is formed at the side corresponding to the lead-in hole.

[0010] Moreover, the outer diameter of the insulator outer shell is 2.2 mm, the thickness is 0.2 mm, and the length is 3 mm; the outer diameter of the insulator inner column is 0.8 mm; the aperture of the counterbore portion is 2.3 mm, and the length is 4.5 mm.

[0011] The advantages and positive effects of the utility model are:

[0012] 1) The utility model seals and cooperates the outer end countersunk hole of the lead post hole on the frame with the insulator jacket, effectively reducing the matching length and matching gap between the frame and the insulator, thereby reducing the amount of epoxy resin glue used, reducing the difficulty of epoxy resin glue exhaust, and reducing the hidden danger of unreliable sealing due to the large expansion coefficient of epoxy resin glue.

[0013] 2) The structure of the utility model directly contacts and positions the inner end of the insulator jacket with the lead post hole on the frame, avoiding the disadvantage that the original lead post sealing structure needs to rely on tooling for positioning, and has the advantages of ingenious and reasonable structure and simple operation.

[0014] 3) With the improved sealing structure, the float seal qualification rate is greatly improved, and basically can meet the 4×10 - 10 Pa·m 3 / s. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the existing float lead column sealing structure;

[0016] Figure 2 This is a schematic diagram of the seal structure of the gyroscope float of the utility model;

[0017] Figure 3 It is an assembly diagram of the insulator of the utility model;

[0018] Figure 4 yes Figure 3 Schematic diagram of the structure of the middle insulating jacket;

[0019] Figure 5 yes Figure 3 Schematic diagram of the structure of the middle insulating inner column;

[0020] Figure 6 It is a structural schematic diagram of the utility model in which countersunk holes are arranged on a frame. DETAILED DESCRIPTION

[0021] The structure of the utility model is further described below with reference to the accompanying drawings and through embodiments. It should be noted that the embodiments are descriptive rather than restrictive.

[0022] A gyroscope float seal structure, see Figure 2-Figure 6 , including a frame and a columnar insulator, the invention point is: to change the structure of the existing columnar insulator, and to reduce the matching length and matching gap size between the columnar insulator and the mounting hole on the frame. Specifically:

[0023] The columnar insulator is composed of an insulator outer shell 5 and an insulator inner column 6. The insulator outer shell is a cylindrical smooth sleeve with equal diameter surfaces on both the inner and outer surfaces. Figure 4 The outer diameter of the insulator jacket is 2.2mm, the thickness is 0.2mm, and the length is 3mm. The inner column of the insulator adopts a light column structure with equal diameter, see Figure 5 The outer diameter of the insulator inner column is 0.8 mm, the length of the insulator inner column is greater than the length of the insulator outer shell, and a lead hole 6.1 is further formed at the tail of the insulator inner column, and a half-cut surface 6.2 is formed at the side corresponding to the lead hole to facilitate welding of the lead wire. The insulator inner column is installed in the insulator outer shell, and the insulator inner column and the insulator outer shell are sintered and connected by insulating glass 8, see Figure 3 , ensuring the sealing and insulation of the insulator.

[0024] The lead post holes 1.1 on the frame for mounting the insulators adopt a through hole structure with a countersunk portion 1.1.1 at the outer end, that is, the original 6 lead post holes are processed Length 4.5mm countersunk hole, see Figure 6 , used for installation and positioning of insulators.

[0025] When assembling, first apply epoxy resin glue on the outer circumference of the insulator jacket, insert In the countersunk hole with a length of 4.5 mm, the inner end of the insulator jacket is in contact with the bottom surface of the countersunk hole, and then the frame is preheated, and the glue 7 is potted in the outer end space of the insulator jacket in the countersunk hole, see Figure 2 .

[0026] The utility model directly uses the end face of the insulator jacket as the positioning surface, which can solve the problem of insufficient frame space, and reduce the gap between the frame and the insulator, reduce the amount of epoxy resin glue used, reduce the difficulty of epoxy resin glue exhaust, and reduce the hidden danger of unreliable sealing due to the large expansion coefficient of epoxy resin glue. This solution does not require much change to the original structure, and is directly processed on the original frame, which can effectively ensure that the instrument does not change much from the state before the change, but the sealing reliability is greatly improved.

[0027] Although the embodiments and drawings of the present invention are disclosed for illustrative purposes, those skilled in the art will appreciate that various substitutions, changes and modifications are possible without departing from the spirit of the present invention and the appended claims. Therefore, the scope of the present invention is not limited to the contents disclosed in the embodiments and drawings.

Claims

1. A gyroscope float sealing structure, comprising a frame and a columnar insulator, characterized in that: The columnar insulator is composed of an insulator outer shell and an inner insulator column; the insulator outer shell is a cylindrical light sleeve with equal diameter surfaces on both the inner and outer surfaces; the inner insulator column adopts an equal diameter light column structure, and the length of the inner insulator column is greater than the length of the insulator outer shell; the inner insulator column is matched with the insulator outer shell in a manner of extending at both ends, and the inner insulator column and the insulator outer shell are sintered and connected by an insulating glass arranged therebetween; The frame is provided with a lead post hole for installing an insulator, and the lead post hole is a through hole with a countersunk portion at the outer end; The insulator sleeve is inserted into the countersunk portion of the lead column hole on the frame, and a sealing glue layer is arranged in the matching gap between the two; the inner end of the insulator sleeve is positioned and contacted with the bottom surface of the corresponding countersunk portion, and the countersunk portion is filled with epoxy resin glue outside the outer end of the insulator sleeve, so that the insulator and the frame form a sealed fixed connection.

2. The gyroscope float sealing structure according to claim 1, characterized in that: A lead-in hole is formed at the tail of the inner column of the insulator, and an inclined half-cut surface is formed at the side corresponding to the lead-in hole.

3. The gyroscope float sealing structure according to claim 1, characterized in that: The outer diameter of the insulator outer shell is 2.2 mm, the thickness is 0.2 mm, and the length is 3 mm; the outer diameter of the insulator inner column is 0.8 mm; the aperture of the countersunk hole is 2.3 mm, and the length is 4.5 mm.

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