Composite material rivet

Abstract

The utility model discloses a composite material rivet which comprises a hard annular inner ring and a soft deformable annular outer ring, and the inner ring is tightly embedded in the outer ring. Through the design of a composite material, the problem that hardness and flexibility of a rivet made of a single material are difficult to consider at the same time is solved, and particularly, the aluminum outer ring provides good flexibility, can adapt to deformation of the connecting position and is not prone to being damaged; the hardness of the rivet is guaranteed through the steel inner ring and the wrapping head, connection is more stable and reliable, the service life of the rivet is prolonged through the structure, and the maintenance cost caused by damage of the rivet is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to mechanical connecting parts, especially to a rivet of composite material. BACKGROUND

[0002] Rivets are commonly used mechanical connecting parts and are widely used in daily life.

[0003] In the existing rivet technology, a single material is usually used, such as all steel or all aluminum. All steel rivets have high hardness, but lack sufficient softness, which may cause damage to the connection in specific application scenarios (such as pot body connection) due to excessive hardness. Although all aluminum rivets have good softness, they lack sufficient hardness and cannot ensure the stability of the connection.

[0004] Therefore, the existing single material rivets have certain limitations in comprehensive performance. SUMMARY

[0005] Based on the poor comprehensive performance of the rivets in the prior art and the certain limitations, the utility model provides a rivet of composite material.

[0006] The utility model solves the above technical problems by adopting the following technical scheme: a rivet of composite material, comprising a hard annular inner ring and a soft deformable annular outer ring, the inner ring being tightly embedded in the outer ring.

[0007] Preferably, the inner ring is a steel inner ring.

[0008] Preferably, the outer ring is an aluminum alloy outer ring.

[0009] Preferably, the inner ring and the outer ring are both circular ring structures.

[0010] Preferably, the end of the inner ring is provided with a hard head, and the diameter of the head is greater than the maximum width of the outer ring.

[0011] Preferably, the head is provided with anti-slip concave-convex textures for preventing rotation after installation.

[0012] Preferably, the length of the inner ring is the same as the length of the outer ring.

[0013] Preferably, the inner surface of the outer ring and the outer surface of the inner ring are provided with concave-convex structures that cooperate with each other.

[0014] Preferably, the concave-convex structures comprise a protruding part provided on one of the inner ring and the outer ring and a concave part provided on the other, and the protruding part extends into the concave part.

[0015] Preferably, the protruding part and the concave part are arranged along the length direction of the inner ring or the outer ring.

[0016] Compared with the prior art, the rivet has the advantages that: the rivet is made of composite material, and the hardness and softness of rivets made of single material are difficult to be considered; specifically, the aluminum outer ring provides good softness, and is not easy to be damaged due to the deformation of the connection; the steel inner ring and the head ensure the hardness of the rivet, so that the connection is more stable and reliable; the structure not only prolongs the service life of the rivet, but also reduces the maintenance cost caused by the damage of the rivet. BRIEF DESCRIPTION OF DRAWINGS

[0017] The utility model will be described in further detail below in combination with the drawings and preferred embodiments, but the person skilled in the art will appreciate that these drawings are only drawn for the purpose of explaining the preferred embodiments, and therefore should not be regarded as limiting the scope of the utility model. In addition, unless specifically indicated, the drawings only schematically show the composition or structure of the described object and can contain exaggerated display, and the drawings are not necessarily drawn to scale.

[0018] Fig. 1 It is the side view of the present application;

[0019] Fig. 2 It is the perspective view of the present application;

[0020] Fig. 3 It is the explosion view of the present application;

[0021] Fig. 4 It is the sectional view of the present application;

[0022] In the drawing: 10, outer ring;20, inner ring;201, head. DETAILED DESCRIPTION

[0023] The preferred embodiments of the utility model will be described in detail below with reference to the drawings. The person skilled in the art will appreciate that these descriptions are only descriptive, exemplary, and should not be interpreted as limiting the protection scope of the utility model.

[0024] EMBODIMENT

[0025] Main scheme :

[0026] A composite material rivet, such as Figs. 1-4As shown, the rivet comprises a hard annular inner ring 20 and a soft deformable annular outer ring 10, the inner ring 20 is tightly embedded in the outer ring 10, and the embedding can be fixed by interference fit. In this scheme, the double-layer structure is formed by sleeving two materials with different hardness, the soft outer ring 10 provides good softness and can adapt to the deformation of the connection without being easily damaged, and the hard inner ring 20 ensures the hardness of the rivet, so that the connection is more stable and reliable. This structure not only improves the service life of the rivet, but also reduces the maintenance cost caused by the damage of the rivet. In addition, in practical application, this structure has shown significant effect. For example, in the connection scene of the pot body, after using the rivet of composite material according to the application, the stability of the connection is obviously improved, and the damage rate is also greatly reduced.

[0027] As a preferred, the inner ring 20 is a steel inner ring 20. The inner ring 20 is made of steel material, which has high hardness and can provide sufficient strength to avoid damage and improve the service life of the rivet.

[0028] As a preferred, the outer ring 10 is an aluminum alloy outer ring 10. The aluminum alloy outer ring 10 has low hardness and is easy to deform during installation.

[0029] As a preferred, the inner ring 20 and the outer ring 10 are both circular ring structures. Since the installation hole is generally circular, the inner and outer rings 10 are set to circular ring structures for matching with the installation hole.

[0030] As a preferred, the end of the inner ring 20 is provided with a hard head 201, and the diameter of the head 201 is greater than the maximum width of the outer ring 10. The head 201 is an integral structure with the inner ring 20, and the head 201 is designed in a shape that is easy to install and fix, such as a 1 / 8 ball head.

[0031] As a preferred, the length of the inner ring 20 is the same as the length of the outer ring 10.

[0032] Anti-slip stabilizing structure :

[0033] As a preferred, the head 201 is provided with anti-skid concave-convex texture for preventing rotation after installation. The concave-convex texture is arranged on the head 201 to improve the friction at the head 201 after installation, so as to prevent the rivet from loosening or falling off during use.

[0034] As a preferred, the inner surface of the outer ring 10 and the outer surface of the inner ring 20 are provided with concave-convex structures that match with each other.

[0035] As a preferred, the concave-convex structure comprises a convex part arranged on one of the inner ring 20 and the outer ring 10 and a concave part arranged on the other, and the convex part extends into the concave part.

[0036] Preferably, the protrusions and the recesses are arranged along the length of the inner ring 20 or the outer ring 10. The protrusions and the recesses are arranged between the inner ring 20 and the outer ring 10 to increase the friction therebetween and to improve the stability of the engagement therebetween. The protrusions and the recesses can be arranged as a straight toothed spline and a spline groove engagement structure.

[0037] The composite material rivet is introduced above, the principle and implementation mode of the composite material rivet are described by applying specific examples in the present application, and the above embodiment is only used for helping to understand the present application and the core idea. It should be pointed out that for ordinary skilled in the art, without departing from the principle of the present application, the present application can be improved and modified in several ways, and these improvements and modifications also fall within the protection scope of the present application.

Claims

1. A composite material rivet, characterized in that, The inner ring is a hard ring and the outer ring is a soft deformable ring.

2. The composite rivet of claim 1, wherein The inner ring is a steel ring.

3. The composite rivet of claim 1 or 2, wherein the composite rivet is made of a material selected from the group consisting of carbon fiber reinforced plastic, glass fiber reinforced plastic, aramid fiber reinforced plastic, and combinations thereof. The outer ring is an aluminum alloy ring.

4. The composite rivet of claim 1, wherein, Both the inner ring and the outer ring are circular rings.

5. The composite rivet of claim 1, wherein, The end of the inner ring is provided with a hard head, and the diameter of the head is larger than the maximum width of the outer ring.

6. The composite rivet of claim 5, wherein, The head is provided with anti-skid concave-convex textures for preventing rotation after installation.

7. The composite rivet of claim 1, wherein, The length of the inner ring is the same as that of the outer ring.

8. The composite rivet of claim 1, wherein, The inner surface of the outer ring and the outer surface of the inner ring are provided with concave-convex structures matching each other.

9. The composite rivet of claim 8, wherein, The concave-convex structures include a convex part provided on one of the inner ring and the outer ring and a concave part provided on the other, and the convex part extends into the concave part.

10. The composite rivet of claim 9, wherein, The convex part and the concave part are arranged along the length direction of the inner ring or the outer ring.

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