Riveting fastening structure

Abstract

The utility model discloses a pull rivet fastening structure which comprises a sleeve and a rivet, one end of the sleeve is provided with a pressing plate, one end of the sleeve is internally provided with a first limiting groove, one end of the rivet is rotatably provided with a rivet head, the rivet head is clamped in the first limiting groove, one end of the sleeve is provided with a plurality of bending holes, and one end of every two adjacent bending holes is provided with a notch. The bending holes are formed in one end of the sleeve, the notches are formed in one ends of every two adjacent bending holes, and the bending extrusion blocks are arranged on the outer side of the rivet head, so that when the rivet is used, one end of the sleeve is inserted into a riveting part in a penetrating mode, the upper end of the riveting part is pressed and limited in an abutting mode through the abutting plate, and then the rivet is tightened; one end of the sleeve deforms and is pressed at the lower end of the riveting part under the extrusion of the rivet head, and meanwhile, the sleeve piece between the two bending holes is folded at the lower part of the riveting part through the movable bending extrusion block, so that double-layer pressing and fixing treatment is realized, and the stability of pulling and riveting fastening is relatively high.

Description

TECHNICAL FIELD

[0001] The utility model relates to a pull rivet technical field, specifically a pull rivet fastening structure. BACKGROUND

[0002] The rivet body nail core is a kind of single-side riveting rivet, but special tool-pull rivet gun (manual, electric, pneumatic) must be used to rivet.Riveting, rivet nail core is pulled by special rivet gun, makes rivet body expand, plays the role of riveting.This kind of rivet is especially suitable for the riveting occasion of not adopting ordinary rivet (must be riveted from two sides), so it is widely used in building, automobile, ship, aircraft, machine, electric appliance, furniture and other products.Opening type flat round head core-pulling rivet is most widely used, countersunk head core-pulling rivet is suitable for the riveting occasion that surface needs to be smooth, closed type core-pulling rivet is suitable for the riveting occasion that requires higher load and has certain sealing performance.

[0003] The technical scheme of the pull rivet in the prior art with the application number 201820626899.1 includes sleeve and nail core inserted into the sleeve tightly, the end of the nail core passing through the sleeve is provided with expansion part, the expansion part and the sleeve are provided with buffer gap, a pair of expansion wings is arranged on the side outer wall of the expansion part towards the sleeve with the nail core as central axis, the expansion wings are parallel to the nail core and extend towards the nail core outer wall, the utility model has the effect of improving the strength of expansion force between the head of pull rivet and sleeve, but the end of the sleeve cannot form double-layer compression fixation, leading to low stability of pull rivet fastening. UTILITY MODEL CONTENTS

[0004] The utility model aims at providing a pull rivet fastening structure to solve the problem that the end of the sleeve cannot form double-layer compression fixation in the prior art, leading to low stability of pull rivet fastening.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a pull rivet fastening structure, including sleeve and rivet, the end of the sleeve is provided with abutting plate, the inside of the end of the sleeve is provided with first limit slot, the end of the rivet is provided with rivet head, and the rivet head is clamped in the first limit slot, the end of the sleeve is provided with a plurality of bending holes, and the end of adjacent two bending holes is provided with notch, the outside of the rivet head is provided with bending extrusion block.

[0006] Further, the end of the sleeve is provided with cylinder insertion head, and the cylinder insertion head is set as circular truncated cone.

[0007] Further, the narrow head end of the cylinder insertion head is away from the abutting plate, and the inside of the cylinder insertion head is provided with through hole.

[0008] Further, the rivet head includes circular truncated cone body and cylinder body, and the circular truncated cone body and the cylinder body are integrally arranged.

[0009] Further, the nail head is internally provided with a second limiting groove, and the rivet is rotatably arranged at one end thereof with the second limiting groove through a limiting seat.

[0010] Further, the outer diameter of the nail head is smaller than the inner diameter of the first limiting groove, and the outer diameter of the bending extrusion block is equal to the outer diameter of the sleeve.

[0011] Further, the bending extrusion block is circularly arranged in a plurality of forms, and the upper end of the bending extrusion block is provided with an inclined end face.

[0012] Compared with the prior art, the utility model has the beneficial effects that:

[0013] 1. The sleeve is provided with a plurality of bending holes at one end, and the adjacent two bending holes are provided with a notch at one end, the nail head is provided with a bending extrusion block on the outer side, in use, the sleeve is inserted into the riveting part at one end, the upper end of the riveting part is pressed and limited by the pressing plate, then the rivet is pulled tight, the sleeve at one end is deformed and pressed under the rivet head and arranged at the lower end of the riveting part, and the sleeve between the two bending holes is folded at the lower part of the riveting part through the moving bending extrusion block, so that the double-layer pressing and fixing treatment is realized, and the stability of the rivet fastening is high.

[0014] 2. The utility model is provided with a second limiting groove in the nail head, and the rivet is rotatably arranged at one end thereof with the second limiting groove through a limiting seat, so that the nail head is conveniently rotatably arranged at one end of the rivet, and the nail head is conveniently moved and adjusted when the rivet is rotated. DRAWINGS

[0015] The drawings are used to provide a further understanding of the utility model and constitute a part of the specification, are used together with the embodiments of the utility model to explain the utility model, and do not constitute a limitation on the utility model. In the drawings:

[0016] Figure 1 It is the first view angle structure schematic view of the utility model;

[0017] Figure 2 It is the second view angle structure schematic view of the utility model;

[0018] Figure 3 It is the overall structure longitudinal section view of the utility model;

[0019] Figure 4 It is the rivet structure schematic view of the utility model.

[0020] In the drawing: 1, sleeve; 2, pressing plate; 3, rivet; 4, bending hole; 5, cylinder insertion head; 6, bending extrusion block; 7, nail head; 8, limiting seat; 9, second limiting groove; 10, inclined end face; 11, first limiting groove; 12, notch; 13, through hole. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the utility model will be apparently and completely described in connection with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all the other embodiments obtained by the ordinary skilled in the art without creative labor belong to the scope of protection of the utility model.

[0022] Please refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 In the embodiments of the utility model, a pull rivet fastening structure comprises a sleeve 1 and a rivet 3, one end of the sleeve 1 is provided with a pressing plate 2, the inside of one end of the sleeve 1 is provided with a first limiting groove 11, one end of the rivet 3 is provided with a rivet head 7, and the rivet head 7 is clamped in the first limiting groove 11, the outer diameter of the rivet head 7 is smaller than the inner diameter of the first limiting groove 11, the outer diameter of the bent extrusion block 6 is equal to the outer diameter of the sleeve 1, one end of the sleeve 1 is provided with a plurality of bent holes 4, and one end of the adjacent two bent holes 4 is provided with a notch 12, the outer side of the rivet head 7 is provided with a bent extrusion block 6, when the rivet 3 is pulled tight, one end of the sleeve 1 and the cylinder insertion head 5 are deformed and pressed under the riveting position under the extrusion of the rivet head 7, and at the same time, the sleeve piece 1 between the two bent holes 4 is folded at the lower part of the riveting position through the moving bent extrusion block 6, the fastening area of one end of the sleeve 1 and the lower end of the riveting position is increased, and double-layer compression fixing treatment is realized, so that the stability of the pull rivet fastening is higher.

[0023] As shown in Figure 1 and Figure 2 , in order to insert one end of the sleeve 1 into the riveting position, a cylinder insertion head 5 is further arranged at one end of the sleeve 1, and the cylinder insertion head 5 is arranged in the shape of a circular truncated cone, the narrow end of the cylinder insertion head 5 is arranged away from the pressing plate 2, and a through hole 13 is arranged in the middle of the cylinder insertion head 5, so as to facilitate the insertion of one end of the sleeve 1 into the riveting position.

[0024] As shown in Figure 2 and Figure 3 , in order to adjust the movement of the rivet head 7 when the rivet 3 is rotated, a circular truncated cone body and a circular cylinder are further arranged in the rivet head 7, and the circular truncated cone body and the circular cylinder are integrally arranged, a second limiting groove 9 is arranged in the inside of the rivet head 7, and the one end of the rivet 3 is rotatably arranged in the second limiting groove 9 through a limiting seat 8, so as to facilitate the rotation of the rivet head 7 at one end of the rivet 3, and facilitate the adjustment of the movement of the rivet head 7 when the rivet 3 is rotated.

[0025] As shown in Figure 1 and Figure 4As shown, in order to bend the sleeve 1 end bending piece, the bending extrusion block 6 is also provided with a plurality of circular arrays, and the upper end of the bending extrusion block 6 is provided with an inclined end face 10, so that the sleeve 1 end bending piece is bent and pressed.

[0026] The working principle and use process of the utility model: when using, the sleeve 1 end is inserted into the riveting position, the upper end of the riveting position is pressed and limited by the pressing plate 2, then the rivet 3 is pulled tight, the sleeve 1 end and the cylinder insertion head 5 are deformed and pressed under the extrusion of the nail head 7 and arranged at the lower end of the riveting position, and the sleeve piece 1 between the two bending holes 4 is folded at the lower part of the riveting position by the moving bending extrusion block 6, realizing double-layer pressing and fixing treatment, and the stability of the pull rivet fastening is higher.

[0027] Finally, it should be noted that: the above only for the preferred embodiments of the utility model, and does not limit the utility model, although the utility model is described in detail with reference to the foregoing embodiments, for the person skilled in the art, it still can modify the technical scheme recorded in the foregoing each embodiment, or equivalent replacement for part of technical features. Any modification, equivalent replacement, improvement etc. within the spirit and principles of the utility model should be included in the protection scope of the utility model.

Claims

1. A pull-rivet fastening structure comprising a sleeve (1) and a rivet (3), characterized by: The sleeve (1) is provided with a pressing plate (2) at one end, the inside of the sleeve (1) is provided with a first limiting groove (11) at one end, the rivet (3) is provided with a head (7) at one end, and the head (7) is clamped in the first limiting groove (11), the sleeve (1) is provided with a plurality of bending holes (4) at one end, and the adjacent two bending holes (4) are provided with a notch (12) at one end, the outer side of the head (7) is provided with a bending extrusion block (6).

2. A rivet fastening structure according to claim 1, wherein: The sleeve (1) is provided with a cylinder insertion head (5) at one end, and the cylinder insertion head (5) is provided in a circular truncated cone shape.

3. A rivet fastening structure according to claim 2, wherein: The narrow head end of the cylinder insertion head (5) is away from the pressing plate (2), and the inner middle part of the cylinder insertion head (5) is provided with a through hole (13).

4. The rivet fastening structure according to claim 1, wherein: The head (7) comprises a circular truncated cone body and a circular cylinder, and the circular truncated cone body and the circular cylinder are integrally arranged.

5. A rivet fastening structure according to claim 4, wherein: The inside of the head (7) is provided with a second limiting groove (9), and the rivet (3) is rotatably arranged at one end through a limiting seat (8) and the second limiting groove (9).

6. The rivet fastening structure according to claim 1, wherein: The outer diameter of the head (7) is smaller than the inner diameter of the first limiting groove (11), and the outer diameter of the bending extrusion block (6) is equal to the outer diameter of the sleeve (1).

7. The rivet fastening structure according to claim 1, wherein: The bending extrusion block (6) is circularly arranged in an array, and the upper end of the bending extrusion block (6) is provided with an inclined end face (10).

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