Image intensifier whole tube shell

Abstract

The utility model discloses an image intensifier whole tube shell which comprises a shell body, the shell body comprises a cylindrical outer circle shell body, one end of the outer circle shell body is provided with an opening, the other end of the outer circle shell body is provided with a round sealing shell, and a central round hole is formed in the middle of the round sealing shell. A glue injection groove parallel to the axis of the outer circular shell is formed in the outer side of the outer circular shell; and a plurality of positioning bosses are arranged on the inner side of the shell and at the joint of the outer circular shell and the edge of the circular sealing shell. According to the utility model, the production efficiency of center alignment and glue injection of the image intensifier can be improved, and the operation is simple; the amount of glue is easy to control during potting, the glue injection mode from top to bottom accords with the physics principle, the operation difficulty is simple and convenient, glue pollution is not caused, and the potting jig does not have a large amount of residual glue.

Description

Technical Field

[0001] The utility model relates to the technical field of image intensifiers, in particular to an image intensifier whole tube housing. Background Art

[0002] The center of the photocathode of the image intensifier needs to coincide with the geometric center of the shell in order to provide the whole device with an imaging effect with small distortion and high center resolution. When the existing image intensifier is potted as a whole, after the whole tube is pressed by a fixture, a glue injection hole is set at the bottom of the shell, and glue is injected upward from the bottom of the whole tube shell by pressure until the glue fills the whole tube.

[0003] At present, the center of the photocathode and the geometric center of the shell are aligned by projection, which is inefficient and there is a center offset in the subsequent potting process. Since potting is performed from bottom to top using pressure to fill the entire tube with glue, the operation is complicated and time-consuming, and the amount of potting glue cannot be determined, resulting in glue contamination and difficult to clean the fixture. Utility Model Content

[0004] The utility model aims to provide an image intensifier whole tube housing which does not have a glue injection hole at the bottom of the housing, utilizes the housing to make a notch, injects glue from the top, and can determine the amount of glue for the whole tube, does not cause glue pollution, and is easy to operate.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] An image intensifier whole tube housing comprises a shell, wherein the shell comprises a cylindrical outer circular shell, one end of the outer circular shell is open, the other end is provided with a circular sealing shell, and the middle of the circular sealing shell is provided with a central circular hole; the outer side of the outer circular shell is provided with a glue injection groove parallel to the axis of the outer circular shell.

[0007] This scheme improves the image intensifier tube housing, removes the glue injection hole originally set on the circular shell, and sets a glue injection groove on the outer circular shell of the image intensifier tube housing, and the bottom of the glue injection groove is connected with the inside of the image intensifier tube housing. In this way, when injecting glue, the glue is injected into the glue injection groove from one side of the circular shell at the bottom of the image intensifier tube housing to the opening side, and then enters the inside of the image intensifier tube housing from the opening end of the outer circular shell through the glue injection groove, and flows into and fills the inside of the image intensifier tube housing under the action of gravity, which will not cause impact displacement to the photocathode, and can also wrap the photocathode without gaps to ensure the insulation effect. The amount of glue for potting the whole tube can be determined without causing glue pollution, and the operation is simple and the fixture is easy to clean.

[0008] As a preferred solution of the utility model, a plurality of positioning bosses are provided on the inner side of the shell and at the connection between the outer circular shell and the edge of the circular enclosure.

[0009] As a preferred solution of the utility model, there are four positioning bosses, and the four positioning bosses are evenly distributed with the center of the central circular hole as the center.

[0010] The positioning boss of the present invention is arranged on the inner side of the connection between the outer cylindrical shell and the edge of the circular enclosure, and can realize rapid positioning of the cathode surface of the image intensifier within an acceptable error range. Although the positioning boss has no limit in the axial direction of the outer cylindrical shell, in the present invention, the glue flows into the photocathode instead of directly impacting it, so no limit is required in this direction.

[0011] As a preferred solution of the utility model, the glue injection groove is a semicircular groove that is recessed from the side of the outer cylindrical shell to the center of the outer cylindrical shell. The glue injection groove of this solution is arranged in the outer cylindrical shell, does not change the outer diameter of the outer cylindrical shell, and does not affect subsequent installation.

[0012] As a preferred solution of the utility model, one end of the outer cylindrical shell opening is provided with an arc-shaped notch connected to the glue injection groove. In this solution, the arc-shaped notch is larger than the cross-sectional area of ​​the glue injection groove, so that the glue can diffuse and flow into the inner part of the outer cylindrical shell.

[0013] As a preferred solution of the utility model, the side surface of the outer cylindrical shell close to the circular shell is provided with a glue injection port recessed toward the center of the outer cylindrical shell, and the glue injection port is connected to the glue injection groove. The glue injection port of this solution can be arranged in conjunction with the glue injection nozzle of the glue injection device, so that the glue nozzle can be aligned with the glue injection groove.

[0014] As a preferred solution of the utility model, the circular enclosure is provided with a support foot protruding outward of the circular enclosure; the support foot is an annular boss cocentric with the central circular hole. The annular boss of this solution protrudes slightly outward, which helps to increase the distance between the photocathode and the high-voltage component after installation and improve the insulation effect; the annular boss can also be changed into a plurality of convex strips protruding outward, and the effect is the same.

[0015] Compared with the prior art, the utility model has the following beneficial effects: it can improve the production efficiency of image intensifier center alignment and glue injection, and the operation is simple; the amount of glue is easier to control during potting, the top-down glue injection method conforms to the principles of physics, the operation is simple, and glue pollution will not be caused, and there will not be a large amount of excess glue on the potting fixture. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the utility model.

[0017] Figure 2 It is a perspective structural schematic diagram of the utility model.

[0018] Figure 3 This is a top view of the internal structure of the utility model.

[0019] Figure 4 The utility model is a bottom surface structure schematic diagram of a circular enclosure.

[0020] In the figure: 1, shell 2, outer circular shell 3, circular shell 4, central circular hole

[0021] 5. Glue injection groove 6. Positioning boss 7. Arc notch 8. Glue injection port

[0022] 9. Support legs. DETAILED DESCRIPTION

[0023] To facilitate the understanding of the present invention, the present invention will be described more comprehensively below with reference to the relevant drawings, and several embodiments of the present invention are given. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thorough and comprehensive.

[0024] It should be noted that when an element is referred to as being "fixed on" another element, it may be directly on the other element or there may also be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used in this article are for illustrative purposes only.

[0025] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field of the present invention. The terms used in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used in this article includes any and all combinations of one or more related listed items.

[0026] See also Figure 1-Figure 4 , the utility model provides a technical solution:

[0027] The invention discloses an image intensifier whole tube housing, comprising a housing 1, wherein the housing 1 comprises a cylindrical outer circular housing 2, wherein the outer circular housing 2 is open at one end and provided with a circular sealing shell 3 at the other end, and a central circular hole 4 is provided in the middle of the circular sealing shell 3; and a glue injection groove 5 parallel to the axis of the outer circular housing 2 is provided on the outer side of the outer circular housing 2.

[0028] A plurality of positioning bosses 6 are provided on the inner side of the shell 1 and at the connection between the outer cylindrical shell 2 and the edge of the circular enclosure 3 .

[0029] There are four positioning bosses 6 , and the four positioning bosses 6 are evenly distributed with the center of the central circular hole 4 as the center.

[0030] The glue injection groove 5 is a semicircular groove that is recessed from the side of the outer cylindrical shell 2 toward the center of the outer cylindrical shell 2 .

[0031] An arc-shaped notch 7 communicating with the glue injection groove 5 is provided at one open end of the outer cylindrical shell 2 .

[0032] A glue injection port 8 which is recessed toward the center of the outer cylindrical shell 2 is provided on the side surface of one end of the outer cylindrical shell 2 close to the circular sealing shell 3 , and the glue injection port 8 is communicated with the glue injection groove 5 .

[0033] The circular enclosure 3 is provided with a supporting foot 9 protruding toward the outside of the circular enclosure 3 , and the supporting foot 9 is an annular boss cocentric with the central circular hole 4 .

[0034] The working process of the utility model is as follows: firstly, the photocathode is positioned through four positioning bosses 6, and then the entire tube housing of the image intensifier is placed in the glue injection device;

[0035] When injecting glue, the glue is injected into the glue injection groove 5 from the glue injection port 8 on one side of the circular shell 3 at the bottom of the image intensifier whole tube shell, and then reaches the open side. Then, the glue enters the interior of the image intensifier whole tube shell through the glue injection groove 5 from the arc-shaped notch 7 at the open end of the outer circular shell 2, and flows into and fills the interior of the image intensifier whole tube shell under the action of gravity. In this way, the glue injection will not cause impact displacement to the photocathode, and can also wrap the photocathode without gaps to ensure the insulation effect. The amount of glue for potting the entire tube can be determined without causing glue pollution. The operation is simple and the jig is easy to clean.

[0036] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An image intensifier tube housing, comprising a housing, characterized in that: The shell comprises a cylindrical outer shell, one end of the outer shell is open, the other end is provided with a circular shell, and the middle of the circular shell is provided with a central circular hole; The outer side of the outer circular shell is provided with a glue injection groove which is parallel to the axis of the outer circular shell.

2. The image intensifier tube housing according to claim 1, characterized in that: A plurality of positioning bosses are arranged on the inner side of the shell and at the connection between the outer circular shell and the edge of the circular enclosure.

3. The image intensifier tube housing according to claim 2, characterized in that: There are four positioning bosses, and the four positioning bosses are evenly distributed with the center of the central circular hole as the center.

4. The image intensifier tube housing according to claim 1, characterized in that: The glue injection groove is a semicircular groove which is recessed from the side of the outer circular shell toward the center of the outer circular shell.

5. The image intensifier tube housing according to claim 1 or 4, characterized in that: An arc-shaped notch communicating with the glue injection groove is arranged at one end of the opening of the outer circular shell.

6. The image intensifier tube housing according to claim 1 or 4, characterized in that: A glue injection port which is recessed toward the center of the outer circular shell is provided on the side surface of one end of the outer circular shell close to the circular shell, and the glue injection port is communicated with the glue injection groove.

7. The image intensifier tube housing according to claim 1, characterized in that: The circular enclosure is provided with supporting feet protruding toward the outside of the circular enclosure; the supporting feet are annular bosses cocentric with the central circular hole.

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