Wire-drawing type self-plugging rivet

Abstract

The utility model relates to the technical field of rivets, and discloses a wire-drawing type self-plugging rivet which comprises a rivet body and a rivet core, the tail end of the rivet body is fixedly connected with a rivet cap, an expansion sleeve is arranged in the rivet body in a sleeved mode, and expansion openings which are evenly distributed are formed in the outer surface of the expansion sleeve. The wire-drawing type self-plugging rivet is mainly composed of the rivet body, the expansion sleeve and the rivet core, in the installation process, the expansion sleeve can bear the pressure of the positioning head and then expand outwards, the expansion sleeve is forced to expand and be in close fit with the rivet body, and therefore the contact area is increased, and the connection strength is improved; meanwhile, vibration can be buffered through the arranged rubber filling layer, first anti-skid grains and second anti-skid grains, the anti-vibration strength of the device is improved, the falling probability of the device is reduced, the device is particularly suitable for efficient and reliable connection between thin-wall materials and multiple layers of different materials, the installation efficiency is improved, the operation process is simplified, the labor intensity of workers is reduced, and the production cost is reduced. And the connection strength and the vibration resistance are remarkably improved.

Description

TECHNICAL FIELD

[0001] The application relates to the rivet technical field, in particular to a wire-drawing type core-pulling rivet. BACKGROUND

[0002] A rivet is a nail-shaped object used to connect two parts with holes, one end with a cap, in riveting, the rivet is connected to the riveted parts by its own deformation or interference, there are many types of rivets, and the forms are not limited, commonly used ones are R-type rivets, fan-shaped rivets, core-pulling rivets (core-hitting rivets), tree-shaped rivets, half-round heads, flat heads, half-hollow rivets, solid rivets, countersunk rivets, core-pulling rivets, hollow rivets, which are usually used to connect the riveted parts by their own deformation.

[0003] The existing patent (publication number: CN220890705U) discloses a rivet head loosening prevention rivet, which comprises a rivet rod, a rivet head is installed at the top of the rivet rod, a rivet sleeve is movably connected to the outer side of the rivet rod, a convex disc is installed at the end of the rivet sleeve away from the rivet head, a clamping and mechanism is arranged in the rivet rod, the clamping and mechanism comprises a clamping block, and the clamping and mechanism is used for clamping the rivet rod; an adaptive mechanism is arranged in the convex disc, the adaptive mechanism comprises a clamping groove, the clamping groove is formed in the inner wall of the convex disc, and the adaptive mechanism is used for fixing the clamping block. The clamping block and the clamping groove are matched to firmly clamp the rivet rod and the rivet head on the convex disc after the rivet is installed, so that the firmness of the rivet is increased, and the rivet has fewer structures and will not greatly reduce the strength of the rivet itself.

[0004] In the above-mentioned comparative document, the existing fastener solution generally has the disadvantages of low installation efficiency, low connection strength, poor vibration resistance and the like, especially under high-strength and high-frequency vibration conditions, the traditional rivet is prone to falling off, which seriously affects the safety and reliability of the product, in addition, the design of the above-mentioned document fails to fully consider the difference in material properties for specific material (such as composite material, aluminum alloy) application scenarios, and the optimal connection effect cannot be achieved. UTILITARIAN CONTENT

[0005] In view of the deficiencies of the prior art, the application provides a wire-drawing type core-pulling rivet, which is particularly suitable for efficient and reliable connection between thin-walled materials and multiple layers of different materials, improves the installation efficiency, simplifies the operation process, reduces the labor intensity, and significantly improves the connection strength and vibration resistance.

[0006] To achieve the above object, the application provides the following technical scheme: a wire drawing type core-pulling rivet, comprising a rivet body and a rivet core, a rivet cap is fixedly connected to the tail end of the rivet body, an expansion sleeve is sleeved in the interior of the rivet body, uniform expansion openings are formed in the outer surface of the expansion sleeve, the rivet core is installed in the interior of the rivet body through the expansion sleeve, a thread is formed in the front end of the rivet core, and a positioning head matched with the expansion sleeve is fixedly connected to the tail end of the rivet core.

[0007] Through the above scheme, when in use, the sharp end of the rivet body is inserted into the installation part, then a pulling force is applied to the positioning head at one end of the rivet core, so that the rivet core gradually exits from the rivet body, in this process, the expansion sleeve can be pressed by the positioning head, then expands outward, forcing the expansion sleeve to expand and form a close fit with the rivet body, thereby increasing the contact area and improving the connection strength, at the same time, the rubber filling layer, the first anti-skid pattern and the second anti-skid pattern arranged can buffer the vibration, improve the anti-vibration strength of the device, and reduce the probability of falling off of the device

[0008] Further, the rivet cap is flat, and the diameter of the rivet cap is greater than the diameter of the rivet body.

[0009] Through the above scheme, the jig can conveniently hold and install the device.

[0010] Further, the main body of the rivet body is cylindrical, the end part is sharp, and a smooth section is arranged in the middle part of the outer surface of the rivet body.

[0011] Through the above scheme, the device can be kept from damaging the material during insertion, and the use effect of the device is improved.

[0012] Further, the front end of the expansion sleeve corresponds to the taper of the rivet body.

[0013] Through the above scheme, the expansion sleeve can expand outward when pressed, increase the contact area, and improve the connection strength between the rivet body and the expansion sleeve.

[0014] Further, a rubber filling layer is installed on the inner wall of the rivet body, and the rubber filling layer is located between the rivet body and the expansion sleeve.

[0015] Through the above scheme, the rubber filling layer can improve the connection strength between the expansion sleeve and the rivet body, and the device can be more stably installed in the appropriate position.

[0016] Further, the rivet core is an elongated rod, and the front end of the rivet core is sharp.

[0017] Through the above scheme, by limiting the shape of the rivet core, the rivet core can conveniently pass through the expansion sleeve and enter the interior of the rivet body.

[0018] Furthermore, the front end of the expansion sleeve is provided with a first anti-slip texture, and the end of the nail core near the positioning head is provided with a second anti-slip texture, the first anti-slip texture and the second anti-slip texture being compatible with each other.

[0019] The above solution can increase friction, which can improve the vibration resistance of the device to a certain extent. At the same time, it can ensure that the nail core will not accidentally fall out of the nail body before installation, thus optimizing the use effect.

[0020] Furthermore, the nail body is made of a material with high tensile strength and corrosion resistance, preferably a high-strength aluminum alloy or titanium alloy.

[0021] By using the above solution and limiting the material of the nail body, the stability of the device in different environments can be ensured, enabling efficient and reliable connections between thin-walled materials and multiple layers of different materials.

[0022] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0023] This type of wire-drawing blind rivet mainly consists of a rivet body, an expansion sleeve, and a rivet core. During installation, the expansion sleeve is subjected to pressure from the positioning head and then expands outward, forcing the expansion sleeve to expand and form a tight fit with the rivet body, thereby increasing the contact area and improving the connection strength. At the same time, the rubber filling layer, the first anti-slip texture, and the second anti-slip texture can buffer vibration, improve the vibration resistance of the device, and reduce the probability of the device falling off. It is particularly suitable for efficient and reliable connection of thin-walled materials and multiple layers of different materials, improving installation efficiency, simplifying the operation process, reducing manual labor intensity, and significantly improving connection strength and vibration resistance. Attached Figure Description

[0024] Figure 1 This is a top view of the overall structure of this application.

[0025] Figure 2 This is a schematic diagram of the overall bottom view of the structure of this application;

[0026] Figure 3 This is a schematic diagram of the overall structure of the nail core in this application;

[0027] Figure 4 This is a schematic diagram of the internal structure of the nail body in this application.

[0028] Figure 5 This is a schematic diagram of the expansion sleeve structure of this application.

[0029] In the picture:

[0030] 1. Nail body; 2. Nail head; 3. Rubber filler layer; 4. Expansion sleeve; 5. Expansion port; 6. First anti-slip texture; 7. Nail core; 8. Thread; 9. Second anti-slip texture; 10. Positioning head. Detailed Implementation

[0031] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0032] Please see Figure 1 , Figure 2 and Figure 3 This embodiment of a wire-drawing type blind rivet includes a rivet body 1 and a rivet core 7. The main body of the rivet body 1 is cylindrical with a sharp end. A smooth section is provided in the middle of the outer surface of the rivet body 1. By limiting the shape of the rivet body 1, the device can be kept from damaging the material during insertion, thus improving the device's performance. The rivet body 1 is made of a material with high tensile strength and corrosion resistance, preferably high-strength aluminum alloy or titanium alloy. By limiting the material of the rivet body 1, the device's stable performance in different environments can be ensured, enabling efficient and reliable connection between thin-walled materials and multiple layers of different materials. A rivet head 2 is fixedly connected to the tail end of the rivet body 1. The rivet head 2 is flat, and its diameter is larger than that of the rivet body 1. By limiting the shape of the rivet head 2, it is convenient for the clamp to grip the device for installation and positioning.

[0033] Please see Figure 1 , Figure 4 and Figure 5 An expansion sleeve 4 is fitted inside the nail body 1. The front end of the expansion sleeve 4 corresponds to the taper of the nail body 1. By limiting the above relationship, the expansion sleeve 4 can expand outward when compressed, increasing the contact area and improving the connection strength between the nail body 1 and the expansion sleeve 4. The outer surface of the expansion sleeve 4 is provided with uniformly distributed expansion openings 5. The outer surface of the nail core 7 passes through the expansion sleeve 4 and is installed inside the nail body 1. The front end of the nail core 7 is provided with a thread 8. The end of the nail core 7 is fixedly connected with a positioning head 10 that is adapted to the expansion sleeve 4. The nail core 7 is a slender rod-shaped object with a sharp front end. By limiting the shape of the nail core 7, it is easy for the nail core 7 to pass through the expansion sleeve 4 and enter the interior of the nail body 1.

[0034] It should be noted that when the nail core 7 is pulled, the positioning head 10 will enter the interior of the nail body 1, which will force the expansion sleeve 4 to be compressed and expand outward, forcing the expansion sleeve 4 to form a tight fit with the nail body 1, thereby increasing the contact area and improving the connection strength.

[0035] Please seeFigure 3 , Figure 4 and Figure 5 A rubber filling layer 3 is installed on the inner wall of the nail body 1. The rubber filling layer 3 is located between the nail body 1 and the expansion sleeve 4. By setting the rubber filling layer 3, the connection strength between the expansion sleeve 4 and the nail body 1 can be improved, enabling the device to be installed more stably in a suitable position. It can also buffer the vibration of the device and improve the vibration resistance of the device. The front end of the expansion sleeve 4 is provided with a first anti-slip texture 6, and the end of the nail core 7 near the positioning head 10 is provided with a second anti-slip texture 9. By setting the first anti-slip texture 6 and the second anti-slip texture 9, the friction can be increased, which can improve the vibration resistance of the device to a certain extent. The first anti-slip texture 6 and the second anti-slip texture 9 are compatible. By limiting the relationship between the first anti-slip texture 6 and the second anti-slip texture 9, it can be ensured that the nail core 7 will not accidentally fall out of the inside of the nail body 1 before the device is installed, thus optimizing the use effect.

[0036] In this embodiment, a wire-drawing type blind rivet mainly consists of a rivet body 1, an expansion sleeve 4, and a rivet core 7. In use, the sharp end of the rivet body 1 is inserted into the mounting part, and then a pulling force is applied to the positioning head 10 at one end of the rivet core 7, causing the rivet core 7 to gradually withdraw from the rivet body 1. During this process, the expansion sleeve 4 is subjected to the pressure of the positioning head 10 and then expands outward, forcing the expansion sleeve 4 to expand and form a tight fit with the rivet body 1, thereby increasing the contact area and improving the connection strength. At the same time, the rubber filling layer 3, the first anti-slip texture 6, and the second anti-slip texture 9 can buffer vibration, improve the vibration resistance of the device, and reduce the probability of the device falling off.

[0037] In summary, this device is particularly suitable for efficient and reliable connections between thin-walled materials and multiple layers of different materials, improving installation efficiency, simplifying operation procedures, reducing manual labor intensity, and significantly enhancing connection strength and vibration resistance.

[0038] The working principle of the above embodiment is as follows: First, the sharp end of the nail core 7 passes through the expansion sleeve 4 and enters the interior of the nail body 1. Then, the sharp end of the nail body 1 is inserted into the mounting part. Through the smooth section opened on the outer surface of the nail body 1, the material can be protected without damage during insertion, thus improving the effectiveness of the device. Next, the nail core 7 can be pulled to gradually withdraw it. During the withdrawal of the nail core 7, the positioning head 10 will contact the expansion sleeve 4, forcing the expansion sleeve 4 to expand and form a tight fit with the nail body 1, thereby increasing the contact area and improving the connection strength. At the same time, the rubber filling layer 3 set between the nail body 1 and the expansion sleeve 4 can play a buffering role. When external vibration occurs, it can absorb the external vibration, thereby improving the vibration resistance of the device. Furthermore, the setting of the first anti-slip texture 6 and the second anti-slip texture 9 can increase the friction between the nail core 7, the positioning head 10 and the interior of the expansion sleeve 4, which can improve the vibration resistance to a certain extent.

[0039] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0040] Although embodiments of this application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A wire-drawing type blind rivet, comprising a rivet body (1) and a rivet core (7), characterized in that: The tail end of the nail body (1) is fixedly connected to a nail head (2). An expansion sleeve (4) is fitted inside the nail body (1). The outer surface of the expansion sleeve (4) is provided with evenly distributed expansion openings (5). The outer surface of the nail core (7) passes through the expansion sleeve (4) and is installed inside the nail body (1). The front end of the nail core (7) is provided with a thread (8). The end of the nail core (7) is fixedly connected to a positioning head (10) that is compatible with the expansion sleeve (4).

2. The wire-drawing type blind rivet according to claim 1, characterized in that: The nail head (2) is flat, and the diameter of the nail head (2) is greater than the diameter of the nail body (1).

3. The wire-drawing type blind rivet according to claim 1, characterized in that: The main body of the nail (1) is cylindrical with a sharp end, and a smooth section is provided in the middle of the outer surface of the nail (1).

4. The wire-drawing type blind rivet according to claim 1, characterized in that: The front end of the expansion sleeve (4) corresponds to the taper of the nail body (1).

5. A wire-drawing type blind rivet according to claim 1, characterized in that: The inner wall of the nail body (1) is fitted with a rubber filling layer (3), which is located between the nail body (1) and the expansion sleeve (4).

6. The wire-drawing type blind rivet according to claim 1, characterized in that: The nail core (7) is a slender rod-shaped object with a sharp front end.

7. A wire-drawing type blind rivet according to claim 6, characterized in that: The expansion sleeve (4) has a first anti-slip texture (6) at its front end, and the nail core (7) has a second anti-slip texture (9) at the end near the positioning head (10). The first anti-slip texture (6) and the second anti-slip texture (9) are compatible with each other.

8. A wire-drawing type blind rivet according to claim 1, characterized in that: The nail body (1) is made of a material with high tensile strength and corrosion resistance.

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