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CN-224233204-U - Fixing structure of drawer base copper bus and bakelite underframe nut

CN224233204UCN 224233204 UCN224233204 UCN 224233204UCN-224233204-U

Abstract

The utility model discloses a fixing structure of a copper bus of a drawer seat and a bakelite underframe nut, which comprises the drawer seat and the bakelite underframe formed by adopting phenolic resin in a compression molding mode, wherein the drawer seat is connected with the copper bus, a copper bus mounting hole is formed in the copper bus, a plurality of hexagonal nut mounting grooves and a plurality of round holes are preset in the bakelite underframe during compression molding, the hexagonal nut mounting grooves and the round holes are coaxially arranged and are communicated with each other, the fixing structure also comprises a plurality of hexagonal iron nuts and a plurality of combined screws, the hexagonal iron nuts are pressed into the hexagonal nut mounting grooves after high-temperature-resistant epoxy resin glue is uniformly coated in the hexagonal nut mounting grooves, and the copper bus mounting holes are aligned with the hexagonal iron nuts and pass through the copper bus mounting holes by the combined screws and are screwed into the hexagonal iron nuts. The cost of the fixing structure is obviously reduced, and the process is simple.

Inventors

  • ZOU HAO
  • YU JIAN
  • ZANG YE

Assignees

  • 江苏洛凯机电股份有限公司

Dates

Publication Date
20260512
Application Date
20250605

Claims (8)

  1. 1. The fixing structure of the copper bus of the drawer seat and the bakelite underframe nut is characterized by comprising the drawer seat and the bakelite underframe (1) formed by adopting phenolic resin in a compression molding mode, wherein the drawer seat is connected with the copper bus, copper bus mounting holes are formed in the copper bus, a plurality of hexagonal nut mounting grooves (2) and a plurality of round holes (3) are preset in the bakelite underframe (1) in the compression molding mode, the hexagonal nut mounting grooves (2) and the round holes (3) are coaxially arranged and are communicated with each other, the fixing structure further comprises a plurality of hexagonal iron nuts (4) and a plurality of combination screws, the hexagonal iron nuts (4) are pressed into the hexagonal nut mounting grooves (2) after high-temperature-resistant epoxy resin glue is uniformly coated in the hexagonal nut mounting grooves (2), and the hexagonal iron nuts (4) are screwed into the hexagonal iron nuts (4) through the copper bus mounting holes by the combination screws.
  2. 2. The structure for fixing the copper bus bar of the drawer base and the bakelite underframe nut is characterized in that the combined screw is formed by tightly combining an outer hexagonal main screw, a spring washer and a flat washer through a thread rolling process.
  3. 3. The fixing structure of the drawer base copper bus and the bakelite underframe nut is characterized in that a plurality of hexagon nut mounting grooves (2) are distributed on the same side face of the bakelite underframe (1) in a same-angle matrix mode.
  4. 4. The fixing structure of the drawer base copper bus bar and the bakelite underframe nut according to claim 3 is characterized in that a plurality of rectangular grooves (5) are preset in the bakelite underframe (1) during compression molding, and the rectangular grooves (5) are adjacent to the hexagonal nut mounting groove (2).
  5. 5. The structure for fixing the copper bus bar of the drawer base and the bakelite underframe nut according to claim 4 is characterized in that the connecting line of the two acute-angled vertexes in the hexagonal nut mounting groove (2) coincides with one axis of the rectangular groove (5), and the axis is parallel to the length direction of the rectangular groove (5).
  6. 6. The fixing structure of the copper bus bar of the drawer base and the bakelite underframe nut according to claim 5 is characterized in that two adjacent rectangular grooves (5) are symmetrically distributed along the length direction of the rectangular grooves (5).
  7. 7. The structure for fixing the copper bus bar of the drawer base and the bakelite underframe nut according to claim 4 is characterized in that the depth dimension of the rectangular groove (5) is smaller than the depth dimension of the hexagonal nut mounting groove (2).
  8. 8. The fixing structure of the copper bus bar of the drawer base and the bakelite underframe nut is characterized in that the depth dimension of the hexagonal nut mounting groove (2) is the same as the thickness dimension of the hexagonal iron nut (4).

Description

Fixing structure of drawer base copper bus and bakelite underframe nut Technical Field The utility model relates to the technical field of power distribution cabinets, in particular to a fixing structure of a drawer base copper bus and a bakelite underframe nut. Background The drawer seat is widely applied to the fields of power distribution cabinets, industrial control equipment and the like, and has the core function of realizing electric conduction and mechanical fixation through the connection of the copper bus and the bakelite underframe. In the traditional design, the copper bus and the bakelite underframe are fixed by relying on a standard copper nut, the copper nut is embedded into the bakelite underframe through an injection molding process, fastening is completed by utilizing a combined hexagonal screw, the design has the advantages of strong high temperature resistance, strong corrosion resistance and difficult rotation, and the injection molding embedding process can ensure the combination stability of the copper nut and the bakelite underframe. Copper materials are known to be expensive, the injection molding process requires custom molds and long production cycles, however, as the requirements of power distribution cabinets, industrial control equipment for cost control and environmental suitability increase, the high cost of copper nuts and the complexity of the injection molding process become bottlenecks. The scheme of adopting the copper nut in the traditional design has the following defects that (1) the cost is high, the price of the copper is far higher than that of an iron piece, the injection molding embedding process needs a precise die, so that the production cost is greatly increased, and (2) the process is complex, the injection molding needs a high-temperature and high-pressure environment, the production period is long, the copper nut is easy to deviate in the injection molding process, and the finished product precision is influenced. Disclosure of Invention The utility model aims to solve the technical problems of overcoming the defects in the prior art and providing the fixing structure of the drawer base copper bus and the bakelite underframe nut, which has the advantages of obviously reduced cost and simple process. The technical scheme includes that the fixing structure of the copper bus of the drawer seat and the bakelite underframe nut comprises a drawer seat and the bakelite underframe formed by adopting phenolic resin in a compression molding mode, wherein the drawer seat is connected with the copper bus, copper bus mounting holes are formed in the copper bus, a plurality of hexagonal nut mounting grooves and a plurality of round holes are preset in the bakelite underframe during compression molding, the hexagonal nut mounting grooves and the round holes are coaxially arranged and communicated with each other, the fixing structure further comprises a plurality of hexagonal iron nuts and a plurality of combination screws, the hexagonal iron nuts are pressed into the hexagonal nut mounting grooves after high-temperature-resistant epoxy resin glue is uniformly coated in the hexagonal nut mounting grooves, and the copper bus mounting holes are aligned with the hexagonal iron nuts and then penetrate through the copper bus mounting holes and are screwed into the hexagonal iron nuts by the combination screws. Further specifically defined, in the above technical solution, the combination screw is formed by tightly combining an external hexagonal main screw, a spring washer and a flat washer through a thread rolling process. Further specifically defined, in the above technical solution, the plurality of hexagon nut mounting grooves are distributed on the same side face of the bakelite bottom frame in the same angle matrix. Further specifically defined, in the above technical solution, the bakelite bottom frame is preset with a plurality of rectangular grooves during compression molding, and the rectangular grooves are adjacent to the hexagonal nut mounting grooves. Further specifically defined, in the above technical solution, a line connecting two acute angles of the vertex of the hexagonal nut mounting groove coincides with one axis of the rectangular groove, and the axis is parallel to the length direction of the rectangular groove. Further specifically defined, in the above technical solution, along the length direction of the rectangular grooves, two adjacent rectangular grooves are symmetrically distributed. Further specifically defined, in the above technical solution, the depth dimension of the rectangular groove is smaller than the depth dimension of the hexagonal nut mounting groove. Further specifically defined, in the above technical solution, the depth dimension of the hexagonal nut mounting groove is the same as the thickness dimension of the hexagonal iron nut. The fixing structure of the drawer base copper bus and the bakelite underframe nut has the advantages t