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CN-224214010-U - Door opening and closing mechanism of vacuum box

CN224214010UCN 224214010 UCN224214010 UCN 224214010UCN-224214010-U

Abstract

The utility model relates to a door opening and closing mechanism of a vacuum box, which relates to the technical field of helium detection for leakage of compressors and comprises a vacuum box body and a door opening and closing mechanism, wherein the vacuum box body is in a cuboid shape with an opening at the inner hollow upper end, the door opening and closing mechanism comprises a sealing cover, a first lever, a second lever, connecting columns, connecting rods, limiting adjusting columns and air cylinders, the connecting columns are fixedly connected to the left side surface and the right side surface of the vacuum box body, the two connecting columns are symmetrically arranged, one end of the connecting rod and the side surface of the first lever are both rotationally connected to the connecting columns, the other end of the connecting rod is hinged to the second lever, the other end of the second lever is hinged to the middle part of the side edge of the sealing cover, the upper end of the first lever is hinged to the front part of the side edge of the sealing cover, the lower end of the first lever is hinged to the output end of the air cylinder, the limiting adjusting columns are fixedly connected to the left side surface and the right side surface of the vacuum box body, and the limiting adjusting columns are symmetrically arranged.

Inventors

  • SUN HOUTAO

Assignees

  • 中创华工智能科技(上海)有限公司

Dates

Publication Date
20260508
Application Date
20250531

Claims (3)

  1. 1. The vacuum box door opening and closing mechanism is characterized by comprising a vacuum box body (100) and a door opening and closing mechanism (200), wherein the vacuum box body (100) is in a cuboid shape with an opening at the upper end in the interior; the door opening and closing mechanism (200) comprises a sealing cover (210), a first lever (220), a second lever (230), a connecting column (240), a connecting rod (250), a limit adjusting column (260) and an air cylinder (270); The connecting columns (240) are fixedly connected to the left side surface and the right side surface of the vacuum box, and the two connecting columns (240) are symmetrically arranged; One end part of the connecting rod (250) and the side surface of the first lever (220) are both rotationally connected to the connecting column (240), the other end of the connecting rod (250) is hinged with the second lever (230), the other end of the second lever (230) is hinged in the middle of the side edge of the sealing cover (210), the upper end of the first lever (220) is hinged in the front of the side edge of the sealing cover (210), and the lower end of the first lever (220) is hinged with the output end of the air cylinder (270); the two limiting and adjusting columns (260) are symmetrically arranged, and the limiting and adjusting columns (260) are positioned above the connecting rod (250).
  2. 2. The vacuum box door opening and closing mechanism according to claim 1, wherein the door opening and closing mechanism (200) further comprises an O-ring (280), an annular groove (110) is arranged at an upper end opening of the vacuum box body (100), and the O-ring (280) is connected in the annular groove (110).
  3. 3. The vacuum box door opening and closing mechanism according to claim 1, wherein the door opening and closing mechanism (200) further comprises a hinge (290), the hinge (290) is hinged at the lower end of the first lever (220), and the other end of the hinge (290) is connected to the output end of the cylinder (270).

Description

Door opening and closing mechanism of vacuum box Technical Field The utility model relates to the technical field of helium leakage detection vacuum boxes of compressors, in particular to a door opening and closing mechanism of a vacuum box. Background The air conditioner compressor is generally connected with a four-way valve, mainly plays a role of a refrigerant replacing an intermediate station in a refrigerating and heating mode in the air conditioner, and structurally, the upper end of the four-way valve is provided with an exhaust pipe joint, the lower end of the four-way valve is respectively provided with a condenser pipe joint, an air return pipe joint and a stop valve pipe joint, and the four pipe joints are respectively connected with corresponding pipes for connection with a compressor exhaust port, a condenser, a compressor air suction port and an indoor unit. In the leakage helium detection of the existing compressor, the four-way valve is required to be arranged in the vacuum box, however, the existing vacuum box needs to be manually operated to open and close a door, the working efficiency is low, and the sealing is unstable. The foregoing description is provided for general background information and does not necessarily constitute prior art. Disclosure of utility model The utility model aims to provide a vacuum box door opening and closing mechanism which is simple and compact, stable in test effect, high in durability and efficiency, time-saving and has popularization significance. The utility model provides a vacuum box door opening and closing mechanism which comprises a vacuum box body and a door opening and closing mechanism, wherein the vacuum box body is in a cuboid shape with an opening at the upper end of an inner hollow part, the door opening and closing mechanism comprises a sealing cover, a first lever, a second lever, connecting columns, connecting rods, limiting adjusting columns and air cylinders, the connecting columns are fixedly connected to the left side surface and the right side surface of the vacuum box body, the two connecting columns are symmetrically arranged, one end part of the connecting rod and the side surface of the first lever are rotationally connected to the connecting columns, the other end of the connecting rod is hinged to the second lever, the other end of the second lever is hinged to the middle part of the side edge of the sealing cover, the upper end of the first lever is hinged to the front part of the side edge of the sealing cover, the lower end of the first lever is hinged to the output end of the air cylinder, the limiting adjusting columns are fixedly connected to the left side surface and the right side surface of the vacuum box body, the two limiting adjusting columns are symmetrically arranged, and the limiting adjusting columns are located above the connecting rod. By adopting the technical scheme, the product to be tested is placed in the vacuum box body during use, the air cylinder is pushed out, and the sealing cover is driven to be tightly attached to the upper end opening of the vacuum box body through the transmission of force of the first lever, the connecting rod and the second lever, so that the sealing of the vacuum box body is realized. When the opposite cylinder is retracted, the sealing cover is opened, the opening amount of the sealing cover can be realized by adjusting the limiting adjusting column, and the closing and opening of the vacuum box can be completed once by integrating the actions. Further, the door opening and closing mechanism further comprises an O-shaped sealing ring, an annular groove is formed in the opening of the upper end of the vacuum box body, and the O-shaped sealing ring is connected in the annular groove. Further, the door opening and closing mechanism further comprises a hinge joint, the hinge joint is hinged to the lower end of the first lever, and the other end of the hinge joint is connected to the output end of the air cylinder. The vacuum box door opening and closing mechanism can be simple and compact in mechanism design, stable in testing effect, high in durability and efficiency, time-saving and popularization-significance, can replace manual or semi-automatic vacuum box door opening and closing, and solves the problems of unstable vacuum box sealing, layout space and response speed. The method is convenient and quick, improves the production efficiency and ensures the product quality. Drawings Fig. 1 is a schematic structural diagram of a door opening and closing mechanism of a vacuum box according to an embodiment of the present utility model. Fig. 2 is a schematic plan view of the door opening and closing mechanism of the vacuum box in fig. 1. Fig. 3 is a schematic plan view of a door opening and closing mechanism of the vacuum box door opening and closing mechanism of fig. 1. Fig. 4 is a schematic structural view of a door opening and closing mechanism of the vacuum box door opening and