Stable installation type self-plugging rivet

Abstract

The utility model relates to the technical field of self-plugging rivets, and discloses a stable installation type self-plugging rivet which comprises a rivet body and a core rivet rod, the core rivet rod is arranged in the rivet body, a fixed end cap is arranged at the end, corresponding to the core rivet rod, of the rivet body, the rivet body comprises an insertion section, a guide section and a deformation section, and a movable end cap is arranged at the end, away from the fixed end cap, of the core rivet rod. According to the scheme, the rivet body is divided into the inserting section, the deformation section and the guide section, the inserting section is of the cone structure, the rivet can be conveniently inserted into a mounting hole of a component to be fastened, the interval is formed between the position, corresponding to the end of the core rivet rod, of the rivet and the mounting hole, radial deformation of the inserting section can be facilitated, and the connection stability is improved; in addition, the guide section and the end of the core rivet rod are connected in an annular conical inserting mode, the inserting acting force can be equally divided, the problem that the blind rivet is loosened and disengaged at the riveting position, and the safety use of the blind rivet is greatly threatened is solved, and the use safety of the blind rivet is further guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of blind rivets, in particular to a blind rivet with stable installation. Background Technique

[0002] A blind rivet is a fastener that can be installed on one side and is widely used in the connection of aerospace vehicles. Blind rivets can be used for connecting metal materials, and there are also blind rivets specially designed for connecting composite materials, which can withstand large tensile and shear forces. Blind rivets are widely used in occasions such as one-sided installation and maintenance. Generally, aerospace blind rivets are composed of a core rod, a nail sleeve and accessory parts such as a lock ring. After the core rod and the nail sleeve are installed and riveted in place, the external lock ring is pushed into the locking groove to complete the locking.

[0003] For the existing blind rivets, only the extrusion riveting formed by the expansion of the riveting body is used. After the blind rivets are used for a long time, the blind rivets are prone to loosen and fall off at the riveting position, which poses a great threat to the safe use of the blind rivets. In view of this, we propose a blind rivet with stable installation. Content of the Utility Model

[0004] The purpose of the utility model is to provide a blind rivet with stable installation, so as to solve the problem that for the existing blind rivets, only the extrusion riveting formed by the expansion of the riveting body is used. After the blind rivets are used for a long time, the blind rivets are prone to loosen and fall off at the riveting position, which poses a great threat to the safe use of the blind rivets as mentioned in the above background technique.

[0005] To achieve the above purpose, the utility model provides the following technical scheme: A blind rivet with stable installation, including a riveting body and a core nail rod, the core nail rod is arranged inside the riveting body, a fixed end cap is arranged at the end of the riveting body corresponding to the core nail rod, the riveting body includes an insertion section, a guiding section and a deformation section, the insertion section, the deformation section and the guiding section are fixedly installed in sequence, a movable end cap is arranged at the end of the core nail rod away from the fixed end cap, and a conical ring groove for inserting the riveting body is opened on the movable end cap.

[0006] Preferably, the insertion section is a cone, and the insertion section and the fixed end cap are fixedly installed.

[0007] Preferably, the outer diameters of the movable end cap and the fixed end cap are both larger than the maximum diameter of the riveting body.

[0008] Preferably, opposite protrusions are arranged on the opposite end faces of the movable end cap and the fixed end cap.

[0009] Preferably, the outer diameter of the end of the insertion section corresponding to the deformation section is equal to the outer diameter of the deformation section, and the length of the insertion section is less than the length of the deformation section.

[0010] Preferably, the riveting body and the movable end cap are in movable contact, and the centers of the riveting body and the movable end cap are collinear.

[0011] Preferably, the length of the deformation section is greater than the diameter of the movable end cap.

[0012] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0013] 1. For this kind of installation-stable blind rivet, by dividing the riveting body into an insertion section, a deformation section and a guiding section, and the insertion section adopting a conical structure, it is convenient to insert the whole blind rivet into the installation hole of the component to be fastened, and there is a gap between the position corresponding to the end of the core nail rod and the installation hole, which is convenient for the radial deformation of the insertion section.

[0014] Generally speaking, while ensuring the installation stability of the blind rivet, this blind rivet is also convenient for insertion; the guiding section and the end of the core nail rod are inserted in a plug-in manner, which can evenly distribute the insertion force and avoid the problem that the blind rivet loosens and falls off at the riveting position, which poses a great threat to the safe use of the blind rivet, and further ensures the use safety of the blind rivet.

[0015] 2. For this kind of installation-stable blind rivet, by setting opposite protrusions on the movable end cap and the fixed end cap, the compressive strength of the movable end cap and the fixed end cap is enhanced, so that the movement of the component to be fastened to both sides can be further restricted, and the installation stability of the blind rivet is further improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic structural diagram of the present utility model;

[0017] Figure 2 is a schematic semi-sectional structural diagram of the present utility model;

[0018] Figure 3 is a schematic diagram of the state where the blind rivet of the present utility model is not installed;

[0019] Figure 4 is a schematic diagram of the state where the blind rivet of the present utility model is installed.

[0020] In the figure: 1, riveting body; 11, deformation section; 12, insertion section; 13, guiding section; 2, core nail rod; 3, fixed end cap; 4, movable end cap. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0021] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0022] Embodiment: Please refer to Figures 1-4 , the present invention provides a technical solution: a core-pulling rivet with stable installation, mainly aiming at the existing core-pulling rivet, which only forms extrusion riveting through the expansion of the rivet body. After the rivet is used for a long time, the core-pulling rivet is prone to loosen and fall off at the riveting position, posing a great threat to the safe use of the core-pulling rivet. The specific solution is as follows: It includes a rivet body 1 and a core nail rod 2, and the core nail rod 2 is arranged inside the rivet body 1. Among them, a communication hole for inserting the core nail rod 2 is opened inside the rivet body 1, and the centers of the rivet body 1 and the core nail rod 2 are collinear.

[0023] Furthermore, a fixed end cap 3 is arranged at the end of the rivet body 1 corresponding to the core nail rod 2. The rivet body 1 includes an insertion section 12, a guiding section 13, and a deformation section 11. The insertion section 12, the deformation section 11, and the guiding section 13 are fixedly installed in sequence. The insertion section 12 is a cone, and the insertion section 12 and the fixed end cap 3 are fixedly installed. Among them, the insertion section 12 can facilitate the insertion of the rivet body 1 inside the component to be fastened. By setting it as a cone and inserting the small-diameter side of the cone into the end corresponding to the component to be fastened, it can not only facilitate the insertion but also, when the core nail rod 2 is pulled by an electric or pneumatic riveting gun, since the rivet body 1 is fixed, the shear ring on the core nail rod 2 will squeeze the rivet body 1 and drill into the inner hole of the rivet body 1 to form a blind-end upset head, and cause the rivet body 1 to expand, generating a clamping force with the structure. Due to the deformation effect of the rivet body 1, the insertion section 12 will produce a certain deformation, and then the end of the insertion section 12 corresponding to the component to be fastened will generate a radial expansion, thereby increasing the contact tightness between the core-pulling rivet and the component to be fastened, and further ensuring the stable fixing effect of the core-pulling rivet.

[0024] Please refer to Figures 2-4 , among which, the outer diameter of the end of the insertion section 12 corresponding to the deformation section 11 is equal to the outer diameter of the deformation section 11, and the length of the insertion section 12 is less than the length of the deformation section 11. Among them, the insertion section 12 and the deformation section 11 are integrally processed. Since the insertion section 12 is arranged on the side far from the movable end cap 4, the deformation force it receives is relatively small, and the degree of deformation is small, which will not damage the component to be fastened. During the fastening process, the damage probability of the core-pulling rivet fixing to the component to be fastened is further reduced.

[0025] In this example, a movable end cap 4 is provided at the end of the core nail rod 2 away from the fixed end cap 3, and the length of the deformation section 11 is greater than the diameter of the movable end cap 4. A conical annular groove for inserting the riveting body 1 is provided on the movable end cap 4. The riveting body 1 is in movable contact with the movable end cap 4, and the centers of the riveting body 1 and the movable end cap 4 are collinear. The outer diameters of the movable end cap 4 and the fixed end cap 3 are both greater than the maximum diameter of the riveting body 1. The fixed end cap 3 can limit the movement of the component to be fastened towards the side where the core nail rod 2 is pulled. Among them, the fixed end cap 3 and the insertion section 12 are integrally processed; when the core nail rod 2 is pulled, the movable end cap 4 can further facilitate the deformation of the riveting body 1. After the riveting body 1 is deformed, the fixed end cap 3 can also limit the deformation of the deformation section 11 towards the side away from the fixed end cap 3, and can provide further support for the deformation section 11, effectively reducing the problem that the blind rivet is likely to loosen and fall off at the riveting position after long-term use, which poses a great threat to the safe use of the blind rivet, and ensuring the safety of the blind rivet during use.

[0026] Further, opposite protrusions are provided on the opposite end faces of the movable end cap 4 and the fixed end cap 3. By providing opposite protrusions on the movable end cap 4 and the fixed end cap 3, the compressive strength of the movable end cap 4 and the fixed end cap 3 is enhanced, so that the movement of the component to be fastened towards both sides can be further limited, and the installation stability of the blind rivet is further improved.

[0027] Working principle: For this type of installation-stable blind rivet, first insert the head of the installed riveting body 1 into the installation hole of the component to be fastened, clamp the end of the core nail rod 2 with a riveting gun, and at the same time, the end of the riveting gun head abuts against the fixed end cap 3 to stably insert the riveting body 1 into the installation hole; use the riveting gun to pull the core nail rod 2, and the acting force acts on the core nail rod 2 and the movable end cap 4. Through the contact between the movable end cap 4 and the riveting body 1, the acting force can be transmitted to the guiding section 13. As the pulling of the core nail rod 2 continues, the movable end cap 4 gradually fits onto the riveting body 1. Under the extrusion force, the deformation section 11 gradually expands to form a bulge. At this time, the movable end cap 4 can limit the position of the bulge generated by the deformation section 11, enhancing the limiting effect of the bulge on the component to be fastened, restricting the outward inclination of the bulge, and improving the use stability of the blind rivet; at the same time, the guiding section 13 and the movable end cap 4 are inserted in a conical ring shape, which can evenly distribute the insertion acting force and avoid the problem that the blind rivet loosens and falls off at the riveting position, which poses a great threat to the safe use of the blind rivet, further ensuring the safety of the blind rivet during use.

[0028] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A core-pulling rivet with stable installation, comprising a rivet body (1) and a core nail rod (2), characterized in that: The core nail rod (2) is arranged inside the riveting body (1). A fixed end cap (3) is arranged at the end of the riveting body (1) corresponding to the core nail rod (2). The riveting body (1) includes a plugging section (12), a guiding section (13) and a deformation section (11). The plugging section (12), the deformation section (11) and the guiding section (13) are fixedly installed in sequence. An active end cap (4) is arranged at the end of the core nail rod (2) far from the fixed end cap (3). A conical annular groove for the plugging of the riveting body (1) is formed on the active end cap (4).

2. The installation-stable blind rivet according to claim 1, characterized in that: The plugging section (12) is a cone, and the plugging section (12) and the fixed end cap (3) are fixedly installed.

3. The installation-stable blind rivet according to claim 1, characterized in that: The outer diameters of the active end cap (4) and the fixed end cap (3) are both larger than the maximum diameter of the riveting body (1).

4. A core-pulling rivet with stable installation according to claim 1, characterized in that: Opposite protrusions are arranged on the opposite end faces of the active end cap (4) and the fixed end cap (3).

5. The blind rivet with stable installation according to claim 1, characterized in that: The outer diameter of the end of the plugging section (12) corresponding to the deformation section (11) is equal to the outer diameter of the deformation section (11), and the length of the plugging section (12) is smaller than the length of the deformation section (11).

6. The installation-stable blind rivet according to claim 1, wherein: The riveting body (1) is in movable contact with the active end cap (4), and the centers of the riveting body (1) and the active end cap (4) are collinear.

7. The blind rivet with stable installation according to claim 1, characterized in that: The length of the deformation section (11) is larger than the diameter of the active end cap (4).

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