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CN-224229048-U - Blind rivet structure

CN224229048UCN 224229048 UCN224229048 UCN 224229048UCN-224229048-U

Abstract

The utility model relates to a blind rivet structure, which comprises a pull rod, wherein the pull rod comprises a rod body and an impact head, the impact head comprises an impact part, a positioning part and a connecting part which are sequentially connected, one end of the positioning part, which is connected with the connecting part, is provided with a positioning groove, the connecting part is connected with the rod body, the side wall of one end of the rod body, which is connected with the connecting part, is provided with a pre-breaking groove, the blind rivet structure further comprises a hollow sleeve, one end of the sleeve radially extends outwards to form a baffle plate, the inner side wall of the sleeve is provided with an annular convex ring, the impact head of the pull rod is used for clamping the deformation and the convex ring generated by the inner wall of the sleeve into the positioning groove after the upper edge of the sleeve is deformed, then the rod body and the impact head are continuously pulled, the rod body and the impact head are broken at the position of the pre-breaking groove, and the impact head is clamped in the sleeve through the positioning groove, so that the impact head is prevented from falling into a member or the two plates, and the engineering and the time for recovering broken objects such as the falling head are omitted.

Inventors

  • SHEN YANGGANG
  • LI YONG

Assignees

  • 深圳华先智造科技有限公司

Dates

Publication Date
20260512
Application Date
20250529

Claims (7)

  1. 1. The blind rivet structure comprises a pull rod and is characterized in that the pull rod comprises a rod body and an impact head, the impact head comprises an impact part, a positioning part and a connecting part which are sequentially connected, one end of the positioning part, which is connected with the connecting part, is provided with a positioning groove, the connecting part is connected with the rod body, a pre-breaking groove is formed in the side wall of one end, which is connected with the connecting part, of the rod body, the blind rivet structure further comprises a hollow sleeve, a baffle plate radially extends outwards from one end of the sleeve, an annular convex ring is arranged on the inner side wall of the sleeve, and the convex ring is clamped into the positioning groove after the sleeve is deformed.
  2. 2. The blind rivet structure according to claim 1, wherein the striking portion has a cylindrical structure, a striking chamfer for guiding deformation of the sleeve is provided at an end of the striking portion connected to the positioning portion, and the positioning portion and the connecting portion have cylindrical structures.
  3. 3. The blind rivet structure according to claim 2, wherein diameters of the striking portion, the positioning portion and the connecting portion are sequentially reduced, and an inner diameter of the collar is not smaller than a diameter of the connecting portion.
  4. 4. The blind rivet structure according to claim 1, wherein the positioning portion is provided with a positioning portion chamfer at one end connected with the connecting portion, the connecting portion is provided with a connecting portion chamfer at one end connected with the positioning portion, and the positioning portion chamfer and the connecting portion chamfer form a positioning groove with a triangular cross section.
  5. 5. The blind rivet structure as set forth in claim 1 wherein said sleeve has an annular recess in an outer sidewall thereof, said annular recess being concentric with said collar.
  6. 6. The blind rivet structure according to claim 1, wherein the connection between the baffle plate and the outer side wall of the sleeve is a chamfer structure, and one end of the chamfer structure extends to the edge of the baffle plate.
  7. 7. A blind rivet structure as set forth in claim 1 wherein said pre-break groove has a depth greater than the depth of the detent groove.

Description

Blind rivet structure Technical Field The utility model relates to the field of blind rivets, in particular to a blind rivet structure. Background The prior art has various modes of jointing plates, such as welding, screw locking, cementing, or blind rivet fixing, wherein the blind rivet is filled in a rivet gun, and the rivet gun is utilized to rivet two plates, after the two plates are penetrated by the rivet gun, the rod body of the blind rivet is pulled out, and the sleeve body of the blind rivet is deformed to rivet the two plates, so that the two plates are firmly combined into a whole. However, when two plates are fixed by using the blind rivet, the impact head of the blind rivet structure impacts with the sleeve, so that the upper edge of the sleeve deforms, riveting of the blind rivet is completed, after deformation of the upper edge of the sleeve is completed, the rod body is pulled continuously, the impact head can be broken, the rod body can be taken out, the impact head falls into a component or out of the two plates, and much labor and time are required to recover the fallen impact head, so that additional trouble and waste are caused. Disclosure of utility model Aiming at the defects in the prior art, a blind rivet structure is provided. The blind rivet structure comprises a pull rod, wherein the pull rod comprises a rod body and an impact head, the impact head comprises an impact part, a positioning part and a connecting part which are sequentially connected, one end of the positioning part, which is connected with the connecting part, is provided with a positioning groove, the connecting part is connected with the rod body, the side wall of one end of the rod body, which is connected with the connecting part, is provided with a pre-breaking groove, the blind rivet structure further comprises a hollow sleeve, one end of the sleeve radially extends outwards to form a baffle plate, the inner side wall of the sleeve is provided with an annular convex ring, and the convex ring is clamped into the positioning groove after the sleeve is deformed. Preferably, the impact part is of a cylindrical structure, an impact chamfer for guiding the deformation of the sleeve is arranged at one end of the impact part connected with the positioning part, and the positioning part and the connecting part are of cylindrical structures. Preferably, the diameters of the impact part, the positioning part and the connecting part are sequentially reduced, and the inner diameter of the convex ring is not smaller than the diameter of the connecting part. Preferably, the positioning part is provided with a positioning part chamfer at one end connected with the connecting part, the connecting part is provided with a connecting part chamfer at one end connected with the positioning part, and the positioning part chamfer and the connecting part chamfer form a positioning groove with a triangular cross section. Preferably, an annular groove is arranged on the outer side wall of the sleeve, and the annular groove is concentric with the convex ring. Preferably, the connection part of the baffle plate and the outer side wall of the sleeve is a chamfer structure, and one end of the chamfer structure extends to the edge of the baffle plate. Preferably, the depth of the pre-breaking groove is larger than the depth of the positioning groove. When the blind rivet is used for fixing two plates, the impact head of the pull rod clamps the deformation and the convex ring generated by the inner wall of the sleeve into the positioning groove after the upper edge of the sleeve is deformed, then the rod body and the impact head are continuously pulled to break at the position of the pre-breaking groove, so that the rod body is pulled out, the impact head is clamped in the sleeve through the positioning groove, the impact head is prevented from falling into a component or outside the two plates, the engineering and the time for recovering broken objects such as falling heads are omitted, the impact head is filled in the inner wall of the sleeve, and the sleeve and the two plates are prevented from generating a gap due to the fact that the sleeve is continuously inwards concaved and deformed, so that the two plates fixed by the blind rivet are firmer. Drawings FIG. 1 is a schematic view of the overall cross-sectional structure of an embodiment of the present utility model; FIG. 2 is a schematic diagram of an overall cross-sectional structure of a rivet according to an embodiment of the present utility model; Fig. 3 is a schematic diagram of the overall external structure of an embodiment of the present utility model. The numerical control device comprises a rod body 1, a striking head 2, a striking part 20, a striking chamfer 200, a positioning part 21, a connecting part 22, a positioning groove 3, a positioning part chamfer 30, a connecting part chamfer 31, a pre-breaking groove 4, a sleeve 5, an annular groove 50, a baffle 6, a chamfer 60 st