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CN-224213992-U - Hinge

CN224213992UCN 224213992 UCN224213992 UCN 224213992UCN-224213992-U

Abstract

The utility model relates to the technical field of mechanical manufacturing, in particular to a hinge. The hinge comprises a base and a connecting body formed by upwards extending one end of the base, wherein the connecting body is of a square cylinder structure, each cylindrical surface of the connecting body is of a plane structure, the base is provided with a mounting hole, and the top of the connecting body is provided with a pin shaft hole penetrating through the left cylindrical surface and the right cylindrical surface of the connecting body and a brain rear hole penetrating through the rear cylindrical surface of the connecting body. The hinge provided by the utility model has a finer appearance and higher product quality.

Inventors

  • WANG HAIYUN
  • Chi Xianhui
  • LIU LEI

Assignees

  • 上海安宇峰实业有限公司

Dates

Publication Date
20260508
Application Date
20250530

Claims (9)

  1. 1. A hinge is characterized in that, The hinge is formed into an integrated hinge main body through a mold by a cold heading process; The hinge body comprises a base and a connecting body formed by upwards extending one end of the base, wherein the connecting body is of a square cylinder structure, each cylindrical surface of the connecting body is of a plane structure, the base is provided with a mounting hole, and the top of the connecting body is provided with a pin shaft hole penetrating through the left cylindrical surface and the right cylindrical surface of the connecting body and a brain rear hole penetrating through the rear cylindrical surface of the connecting body.
  2. 2. The hinge according to claim 1, wherein the hinge is formed of a material having a shape of a circular cross-section, The left end and the right end of the connecting body are provided with step structures, the step structures are lower than the pin shaft holes and the brain rear holes, and front ends of the step structures are chamfered and used for limiting the rotation angle of the hinge.
  3. 3. The hinge according to claim 1, wherein the hinge is formed of a material having a shape of a circular cross-section, The inner wall of the brain back hole is provided with threads, the pitch of the threads is 0.5-1.5mm, and the threads are used for being connected with a limiting pin to limit the rotation angle of the hinge.
  4. 4. The hinge according to claim 1, wherein the hinge is formed of a material having a shape of a circular cross-section, The base is provided with drain holes, the diameter of each drain hole is 2-5mm, and the drain holes are uniformly distributed along the length direction of the base.
  5. 5. A hinge according to claim 2, wherein, The chamfer angle of the step structure is 30-60 degrees, and the step height is 1/3-1/2 of the diameter of the pin shaft hole.
  6. 6. The hinge according to claim 1, wherein the hinge is formed of a material having a shape of a circular cross-section, The hinge main body is made of alloy steel, and the alloy steel comprises Cr12 steel or 50Mn steel.
  7. 7. The hinge according to claim 1, wherein the hinge is formed of a material having a shape of a circular cross-section, The inner wall of the pin shaft hole is provided with a wear-resistant coating, and the thickness of the coating is 10-50 mu m.
  8. 8. The hinge according to claim 4, wherein the hinge is formed of a material having a shape of a circular cross-section, The distance between the drain hole and the edge of the base is 3-8mm, and the hole spacing is 10-20mm.
  9. 9. The hinge according to claim 1, wherein the hinge is formed of a material having a shape of a circular cross-section, The surface roughness Ra of the hinge main body is less than or equal to 0.8 mu m, and no burrs exist after cold heading molding.

Description

Hinge Technical Field The utility model relates to the technical field of mechanical manufacturing, in particular to a hinge. Background The automobile door hinge is a key component for realizing stable opening of the automobile door. With more and more brands of automobile enterprises, the automobile industry is also more and more competitive. Therefore, each vehicle enterprise aims to optimize the quality of each part of the vehicle, and reduce the cost in a reasonable range, so that the vehicle enterprise has competitiveness in the huge automobile industry. The traditional door hinge adopts batch production of roller section bars, and the production method has the problems of long production period and low material utilization rate. And the product produced by the method has rough appearance and low product quality. Disclosure of utility model In view of the above-described deficiencies of the current production of door hinges using roll profiles, the present utility model provides a hinge having a finer appearance and a higher product quality. According to one aspect of the present utility model, there is provided a hinge, The hinge is formed into an integrated hinge main body through a mold by a cold heading process; The hinge body comprises a base and a connecting body formed by upwards extending one end of the base, wherein the connecting body is of a square cylinder structure, each cylindrical surface of the connecting body is of a plane structure, the base is provided with a mounting hole, and the top of the connecting body is provided with a pin shaft hole penetrating through the left cylindrical surface and the right cylindrical surface of the connecting body and a brain rear hole penetrating through the rear cylindrical surface of the connecting body. Optionally, a step structure is disposed at the left and right ends of the connector, the step structure is lower than the pin shaft hole and the brain rear hole, and a front end chamfer of the step structure is used for limiting a rotation angle of the hinge. Optionally, the inner wall of the back brain hole is provided with threads, and the pitch of the threads is 0.5-1.5mm and used for being connected with a limiting pin to limit the rotation angle of the hinge. Optionally, the base is provided with drain holes, the diameter of the drain holes is 2-5mm, and the drain holes are uniformly distributed along the length direction of the base. Optionally, the chamfer angle of the step structure is 30 degrees to 60 degrees, and the step height is 1/3 to 1/2 of the diameter of the pin shaft hole. Alternatively, the material of the hinge body is alloy steel, and the alloy steel is Cr12 steel or 50Mn steel. Optionally, the inner wall of the pin shaft hole is provided with a wear-resistant coating, and the thickness of the coating is 10-50 mu m. Alternatively, the distance between the drain hole and the edge of the base is 3-8mm, and the hole spacing is 10-20mm. Alternatively, the surface roughness Ra of the hinge body is less than or equal to 0.8 mu m, and no burrs exist after cold heading molding. The hinge has the advantages that the hinge main body is integrally formed by the base and the connector, each cylindrical surface of the connector is a plane, the outer surface of the hinge made of the traditional roll-formed profile is very rough, and compared with the base and the connector, the hinge provided by the utility model has finer appearance and higher product quality. Drawings In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art. FIG. 1 is a schematic view of a hinge according to an embodiment of the present utility model; FIG. 2 is a schematic view of the hinge body according to an embodiment of the present utility model; FIG. 3 is a schematic view of an embodiment of a hinge with a mounting hole and a pin hole; Fig. 4 is an external view schematically showing a hinge with a rear brain hole according to an embodiment of the present utility model. Detailed Description The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model. Embodiment one: As shown in figures 1-4, the hinge is formed into an integral hinge body by a cold heading process thro