Open type self-plugging rivet

Abstract

The utility model discloses an open type self-plugging rivet, which relates to the technical field of rivets, and particularly comprises a rivet core, an annular groove is arranged on the outer wall of the rivet core, the outer wall of the rivet core is sleeved with an expansion pipe, one end of the expansion pipe is fixedly connected with an expansion component, and the expansion pipe and a conical extrusion ring are extruded and expanded with a riveting piece. The outer wall of the riveting plane is buckled and attached through the protruding ring, so that loosening and slipping are avoided, the attaching ring is extruded through the locking protruding piece, the connecting pipe is extruded through the tightening protruding piece protrusion, a protrusion shape is formed to fix a riveting piece, sliding and falling are prevented, the riveting strength is improved, the riveting use stability is improved, and the service life of the riveting piece is prolonged. The lower surface of the riveting piece is extruded and attached through the nail head, the groove is extruded through the nail head, the fixing ball is extruded to the lower surface of the riveting piece through the groove to be fixed, and therefore the riveting stability is improved, and workpiece surface deformation caused by too large pressure during riveting can be prevented through the clamping ring and the groove.

Description

Technical Field

[0001] The utility model relates to the technical field of rivets, in particular to an open type blind rivet. Background Art

[0002] Open type blind rivets are a type of rivets for single-sided riveting, but a special riveting gun (manual, electric, pneumatic) must be used for riveting. During riveting, the rivet core is pulled by a special riveting gun to expand the rivet body, playing a riveting role. This type of rivet is especially suitable for riveting occasions where it is inconvenient to use ordinary rivets (which require riveting from both sides), so it is widely used in products such as construction, automobiles, ships, airplanes, machines, electrical appliances, furniture, etc., and has a very wide application.

[0003] After retrieval, the Chinese patent with the publication number CN210050168U discloses that the technical key points are as follows: An open type blind rivet includes a rivet core and a rivet body. One end of the rivet body is welded with a rivet end cap, and the rivet core is embedded and connected on the rivet body. The top of the rivet core is integrally formed with a rivet expansion head, and a connecting stud is detachably embedded and spirally connected through a connecting screw hole at the center position of the top of the rivet expansion head. In the utility model, the open type blind rivet is spirally connected with a connecting stud at the top of the rivet end cap, and a converging sleeve frame is slidably connected to the connecting stud. The converging sleeve frame can be adjusted by adjusting the nut, so that the converging sleeve frame converges the opening at the top of the rivet body during riveting. After the convergence is completed, the connecting stud is removed, so that the opening at the top of the rivet body converges and fits on the rivet expansion head, making the open type blind rivet more firm and stable during riveting, and enhancing the practicability of the open type blind rivet.

[0004] The above solution solves the problem that the existing rivet body has a large opening under the action of the rivet expansion head, but there is no measure to converge the opening generated by the riveting of the rivet body. During fixation, the stability of the rivet expansion head is poor, and it is easy to achieve the riveting effect, but the practicability is not strong. However, the existing rivets are prone to looseness after being riveted with the riveted parts, and can still rotate on the plane of the riveted parts after riveting. Over time, it is easy to cause detachment, unable to achieve an anti-slip effect, and affecting the use stability and connection tightness.

[0005] Therefore, a new solution needs to be proposed to solve this problem. Content of the Utility Model

[0006] In view of the above background art, the existing rivets are prone to looseness after being riveted with the riveted parts, and can still rotate on the plane of the riveted parts after riveting. Over time, it is easy to cause detachment, unable to achieve an anti-slip effect, and affecting the use stability and connection tightness.

[0007] An open-type blind rivet disclosed by the utility model comprises a rivet core. An annular groove is formed in the outer wall of the rivet core. The outer wall of the rivet core is sleeved with an expansion tube. One end of the expansion tube is fixedly connected with an expansion component. The left end of the rivet core is fixedly connected with a fixing component. The expansion component comprises a connecting pipe. The right end of the connecting pipe is fixedly connected with a conical extrusion ring. A convex ring is fixedly attached to the outer wall of the connecting pipe. An extrusion component is attached to the inner wall of the connecting pipe. The left end of the connecting pipe is fixedly connected with the right end of the expansion tube. The connecting pipe penetrates through and is connected with the rivet core. The conical extrusion ring penetrates through and is connected with the rivet core through the connecting pipe. The fixing component comprises a rivet head. The periphery of the upper surface of the rivet head is fixedly welded with a snap ring. A groove is formed in the upper surface of the rivet head. Fixing balls are fixedly attached to the periphery of the groove. The center of the upper surface of the rivet head is fixedly connected with the left end of the rivet core.

[0008] Further, the rivet core is specifically made of stainless steel.

[0009] Further, the annular groove is formed in the right half of the outer wall of the rivet core.

[0010] Further, the convex ring is specifically made of carbon steel and is fixedly welded to the upper right half of the connecting pipe. The conical extrusion ring is specifically made of carbon steel.

[0011] Further, the extrusion component comprises a fitting ring. An inner groove is formed in the inner wall of the fitting ring. Locking convex pieces are fixedly attached to the inner wall of the inner groove. The fitting ring is specifically made of aluminum and the outer wall of the fitting ring is fixedly attached to the inner wall of the connecting pipe. The locking convex pieces are specifically made of carbon steel sheets and are circumferentially welded to the inner wall of the inner groove.

[0012] Further, the fixing balls are specifically made of carbon steel and are circumferentially and fixedly attached to the inner wall of the groove. The fixing balls are convex spherical. The number of the fixing balls is 6-10 groups.

[0013] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0014] 1. Through the settings of the expansion tube, the connecting pipe, the conical extrusion ring, the convex ring, the fitting ring, the inner groove and the locking convex pieces, the connecting pipe is used to penetrate through and connect with the riveted part. The expansion tube and the conical extrusion ring are used to extrude and expand the riveted part. The convex ring is used to buckle and fit the outer wall of the riveting plane, so as to avoid loosening and slipping. The locking convex pieces are used to extrude the fitting ring, and the raised locking convex pieces extrude the connecting pipe, forming a raised shape to fix the riveted part and prevent sliding and falling off, thereby improving the riveting strength and the use stability of riveting.

[0015] 2. The utility model is provided with a fixing ball through a nail head, a snap ring and a groove. The lower surface of the riveting part is extruded and fitted by the nail head. The groove is extruded by the nail head, and the fixing ball is extruded into the lower surface of the riveting part through the groove for fixing, so as to improve the stability of riveting. The snap ring and the groove can prevent the surface of the workpiece from deforming due to excessive pressure during riveting. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings described herein are used to provide a further understanding of the present application and form a part of the present application. The illustrative embodiments and descriptions thereof of the present application are used to explain the present application and do not constitute an improper limitation of the present application. In the drawings:

[0017] Figure 1 is a schematic structural diagram of the utility model;

[0018] Figure 2 is a schematic structural diagram of the expansion assembly of the utility model;

[0019] Figure 3 is a schematic structural diagram of the extrusion assembly of the utility model;

[0020] Figure 4 is a schematic structural diagram of the fixing assembly of the utility model.

[0021] In the figure: 1, nail core; 2, annular groove; 3, expansion tube; 4, expansion assembly; 41, connecting tube; 42, conical extrusion ring; 43, convex ring; 44, extrusion assembly; 441, fitting ring; 442, inner groove; 443, locking tab; 5, fixing assembly; 51, nail head; 52, snap ring; 53, groove; 54, fixing ball. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] The following will disclose multiple embodiments of the present utility model in the form of illustrations. For the sake of clarity, many physical details will be described in the following narrative. However, it should be understood that these physical details are not used to limit the present utility model. That is to say, in some embodiments of the present utility model, these physical details are unnecessary. In addition, for the purpose of simplifying the illustrations, some well-known and commonly used structures and components will be shown in a simple schematic manner in the illustrations.

[0023] Please refer to Figures 1-4 An open-type blind rivet of the present utility model includes a nail core 1. An annular groove 2 is provided on the outer wall of the nail core 1. The outer wall of the nail core 1 is sleeved with an expansion tube 3. One end of the expansion tube 3 is fixedly connected to an expansion assembly 4. The left end of the nail core 1 is fixedly connected to a fixing assembly 5. The nail core 1 is specifically made of stainless steel. The annular groove 2 is provided in the right half of the outer wall of the nail core 1, which is convenient for users to use and improves the use efficiency.

[0024] The expansion component 4 includes a connecting pipe 41. The right end of the connecting pipe 41 is fixedly connected to a conical extrusion ring 42. A convex ring 43 is fixedly attached to the outer wall of the connecting pipe 41. An extrusion component 44 is attached to the inner wall of the connecting pipe 41. The left end of the connecting pipe 41 is fixedly connected to the right end of the expansion pipe 3. The connecting pipe 41 is penetrated and connected with the nail core 1. The conical extrusion ring 42 is penetrated and connected with the nail core 1 through the connecting pipe 41. The convex ring 43 is made of carbon steel, and the convex ring 43 is fixedly welded to the upper right part of the connecting pipe 41. The conical extrusion ring 42 is made of carbon steel to improve the riveting strength.

[0025] The extrusion component 44 includes a fitting ring 441. An inner groove 442 is formed in the inner wall of the fitting ring 441. A locking convex piece 443 is fixedly attached to the inner wall of the inner groove 442. The fitting ring 441 is made of aluminum, and the outer wall of the fitting ring 441 is fixedly attached to the inner wall of the connecting pipe 41. The locking convex piece 443 is made of carbon steel sheet, and the locking convex piece 443 is welded around the inner wall of the inner groove 442 to prevent loosening after riveting and improve the stability of riveting.

[0026] The fixing component 5 includes a nail head 51. The periphery of the upper surface of the nail head 51 is fixedly welded to a clamping ring 52. A groove 53 is formed in the upper surface of the nail head 51. Fixing balls 54 are fixedly attached around the groove 53. The center of the upper surface of the nail head 51 is fixedly connected to the left end of the nail core 1. The fixing balls 54 are made of carbon steel, and the fixing balls 54 are fixedly attached around the inner wall of the groove 53. The fixing balls 54 are convex spherical. The number of the fixing balls 54 is 6 - 10 groups, and it is more firm and stable after riveting.

[0027] When using the present utility model: The nail core 1 is used for installation with the annular groove 2. The connecting pipe 41 is penetrated and connected with the riveting part. The expansion pipe 3, the conical extrusion ring 42 and the riveting part are used for extrusion and expansion. The convex ring 43 is used for buckling and fitting the outer wall of the riveting plane, so as to avoid loosening and slipping. The locking convex piece 443 is used for extruding the fitting ring. The protrusion of the tightening convex piece 443 extrudes the connecting pipe 41 to form a protrusion to fix the riveting part and prevent sliding and falling off, thereby improving the riveting strength and the stability of riveting use. The nail head 51 is used for extruding and fitting the lower surface of the riveting part. The nail head 51 extrudes the groove 53, and the fixing balls 54 are extruded through the groove 53 to the lower surface of the riveting part for fixation, thereby improving the stability of riveting. The clamping ring 52 and the groove 53 can prevent the workpiece surface from deforming due to excessive pressure during riveting.

[0028] The above are only the embodiments of the present utility model and are not used to limit the present utility model. For those skilled in the art, the present utility model can have various changes and modifications. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the scope of the claims of the present utility model.

Claims

1. An open-end blind rivet, comprising a mandrel (1), characterized in that: The outer wall of the nail core (1) is provided with an annular groove (2), the outer wall of the nail core (1) is sleeved with an expansion tube (3), one end of the expansion tube (3) is fixedly connected to an expansion assembly (4), the left end of the nail core (1) is fixedly connected to a fixing assembly (5), the expansion assembly (4) comprises a connecting tube (41), the right end of the connecting tube (41) is fixedly connected to a conical extrusion ring (42), the outer wall of the connecting tube (41) is fixedly fitted with a convex ring (43), the inner wall of the connecting tube (41) is fitted with an extrusion assembly (44), and the connecting tube (41) is fixedly fitted with a convex ring (43). 1) The left end is fixedly connected to the right end of the expansion tube (3), the connecting tube (41) is connected through the nail core (1), the conical extrusion ring (42) is connected through the nail core (1) through the connecting tube (41), the fixing assembly (5) comprises a nail head (51), the upper surface of the nail head (51) is fixedly welded to the clamping ring (52) around, the upper surface of the nail head (51) is provided with a groove (53), the groove (53) is fixedly fitted with a fixing ball (54) around, and the center of the upper surface of the nail head (51) is fixedly connected to the left end of the nail core (1).

2. An open-end blind rivet according to claim 1, characterized in that: The nail core (1) is specifically made of stainless steel.

3. The open-end blind rivet according to claim 1, characterized in that: The annular groove (2) is provided on the right half of the outer wall of the nail core (1).

4. The open-end blind rivet according to claim 1, characterized in that: The convex ring (43) is specifically made of carbon steel, and the convex ring (43) is fixedly welded to the upper right half of the connecting pipe (41), and the conical extrusion ring (42) is specifically made of carbon steel.

5. The open-end blind rivet according to claim 1, characterized in that: The extrusion assembly (44) comprises a fitting ring (441), the inner wall of the fitting ring (441) is provided with an inner groove (442), the inner wall of the inner groove (442) is fixedly fitted with a locking protrusion (443), the fitting ring (441) is specifically made of aluminum material, and the outer wall of the fitting ring (441) is fixedly fitted with the inner wall of the connecting pipe (41), the locking protrusion (443) is specifically made of a carbon steel sheet, and the locking protrusion (443) is welded around the inner wall of the inner groove (442).

6. The open-end blind rivet according to claim 1, characterized in that: The fixing balls (54) are specifically made of carbon steel, and the fixing balls (54) are fixedly attached to the inner wall of the groove (53) around the fixing balls (54). The fixing balls (54) are convex spherical shapes, and the number of the fixing balls (54) is 6-10 groups.

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