Pattern-drawing type self-plugging rivet

Abstract

The utility model provides a pattern pulling type blind rivet, which relates to the technical field of blind rivets and comprises a rivet body, a clamping plate is mounted at one end of the rivet body, a rivet core is mounted between the rivet body and the clamping plate in a penetrating manner, a connecting rod is mounted at one end of the rivet core, and a pattern pulling block is mounted on the outer side of a rod body of the connecting rod in a sleeving manner. A plurality of flower-shaped branch grooves are formed in the outer side of a pipe body of the rivet body in a penetrating mode, and a locking mechanism is installed between the connecting rod and the flower-shaped block. A locking mechanism is arranged between the connecting rod and the garland block, when the rivet core pulls the connecting rod to move, the pushing block extrudes the inclined transmission plate to enable the transmission plate to be bent and push the pressing block, and then the pressing block extrudes the end, close to a material, of the garland block through the deformation groove to enable the end of the garland block to be locally deformed to be tightly meshed with the rivet body and the material to form a mechanical locking structure. The locking force between the rivet core and the rivet body is obviously enhanced, and the problem of anchoring failure caused by connection loosening under the scene of long-term vibration or stress is effectively avoided.

Description

Technical Field

[0001] This utility model relates to the field of blind rivet technology, and more specifically, to a striped blind rivet. Background Technology

[0002] A pull-type blind rivet is a type of rivet where the rivet core cuts the end of the rivet body into a multi-petal-shaped rivet head during riveting, forming a distributed anchoring structure to avoid damaging the surface of soft substrates. For example, a pull-type blind rivet proposed in application number "CN201920391115.6" includes a rivet core rod and a rivet body. One end of the rivet body is welded with a rivet end cap, and a core rod connecting hole is opened through the vertical center line inside the rivet body. The rivet core rod is embedded and connected in the core rod connecting hole, and a core rod end is welded to the top of the rivet core rod. An arc-shaped protrusion is welded to the outer shell of the core rod end. In this utility model, the pull-type blind rivet has a connecting screw hole at the top of the core rod end, and a protective end cap is spirally connected to the connecting screw hole through the connecting screw rod. When riveting the pull-type blind rivet, the protective end cap can be fixed to the outside of the rivet body through the connecting screw rod, thereby protecting the four petal-shaped arc rivet heads that are pulled at the end of the rivet body during riveting, preventing accidental collisions from deforming the rivet heads and causing the pull-type blind rivet to loosen.

[0003] However, in the above technical solution, the document content, please complete the second paragraph of the background technology as follows:

[0004] However, the above technical solutions only provide external protection for the petal-shaped rivet head after riveting by using a protective end cap, without strengthening the connection structure between the rivet body and the rivet core. Under long-term vibration or stress, the rivet core and rivet body may loosen due to insufficient locking force, resulting in anchoring failure. Therefore, we propose a pull-type blind rivet to solve the above problems. Utility Model Content

[0005] The main purpose of this utility model is to provide a pull-type core-pulling rivet, which solves the problem that if only the protective end cap is used to externally protect the petal-shaped rivet head after riveting, without strengthening the connection structure between the rivet body and the rivet core, the rivet core and the rivet body may loosen due to insufficient locking force under long-term vibration or stress scenarios, leading to anchoring failure.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0007] A pull-out rivet includes a rivet body, a retaining plate mounted at one end of the rivet body, a rivet core inserted through the rivet body and the retaining plate, a connecting rod mounted at one end of the rivet core, a pull-out block sleeved on the outer side of the connecting rod, and the connecting rod and the pull-out block being fixedly connected. The pull-out block is fitted against the end of the rivet body away from the retaining plate. Several opening grooves are provided through the outer side of the rivet body. A locking mechanism is installed between the connecting rod and the pull-out block. The locking mechanism includes several temporary storage racks, the temporary storage racks being circumferentially aligned. The components are installed inside the rivet block, and the temporary storage racks correspond one-to-one with each rivet arc surface. The temporary storage racks are equipped with transmission plates, and the transmission plates are all inclined. The transmission plates are equipped with pressure blocks on the side away from the connecting rod. The temporary storage racks are equipped with deformation grooves on the side away from the connecting rod. The pressure blocks are engaged with the deformation grooves at the ends away from the transmission plates. Several push blocks are installed on the outside of the connecting rod, and the push blocks are parallel to the transmission plates at the ends away from the connecting rod.

[0008] Preferably, the side of the drawing block near the rivet body is equipped with several guide plates, which are respectively engaged and installed inside the drawing groove.

[0009] Preferably, the riveting body has a first inclined surface at the end away from the card plate, and the lace block has a second inclined surface at the end near the riveting body, with the first inclined surface and the second inclined surface fitting together.

[0010] Preferably, the card plate is equipped with several anti-slip pads on the side near the rivet.

[0011] Compared with the prior art, the present invention has the following beneficial effects:

[0012] (1) In this utility model, a locking mechanism is provided between the connecting rod and the pull block. When the nail core pulls the connecting rod to move, the push block squeezes the inclined transmission plate, causing it to bend and push the pressure block. Then the pressure block squeezes the pull block near the material through the deformation groove, causing it to undergo local deformation and tightly engage with the rivet body and the material to form a mechanical locking structure. This significantly enhances the locking force between the nail core and the rivet body, effectively avoiding the anchoring failure problem caused by loose connection under long-term vibration or stress scenarios.

[0013] (2) In this utility model, the first inclined surface and the second inclined surface are respectively provided at the contact end of the pull flower block and the rivet body. When the nail core drives the pull flower block to move, the cooperation of the two inclined surfaces can evenly push the outer side of the rivet body to spread outward along the flower groove, forming a regular flower-shaped anchoring structure. At the same time, the guide plate on the pull flower block is engaged in the flower groove, further guiding the rivet body petals to spread evenly. Attached Figure Description

[0014] Figure 1This is a schematic diagram of the overall structure of a pull-out rivet of the present invention;

[0015] Figure 2 This is a schematic diagram of the overall structure of the rivet body of a pull-type blind rivet according to this utility model;

[0016] Figure 3 This is a schematic diagram of the overall structure of the core of a pull-out rivet according to the present invention;

[0017] Figure 4 This is a side view of the overall structure of a pull-out rivet of the present invention;

[0018] Figure 5 This utility model relates to a pull-out type blind rivet. Figure 4 Schematic diagram of the cross-sectional structure at point AA;

[0019] Figure 6 This utility model relates to a pull-out type blind rivet. Figure 5 Enlarged structural diagram at point B;

[0020] Figure 7 This utility model relates to a pull-out type blind rivet. Figure 5 Enlarged structural diagram at point C.

[0021] In the diagram: 1. Rivet body; 2. Flowering groove; 3. Clamping plate; 4. Anti-slip pad; 5. Nail core; 6. Flowering block; 7. Guide plate; 8. First inclined surface; 9. Locking mechanism; 901. Temporary storage rack; 902. Deformation groove; 903. Pressure block; 904. Push block; 905. Transmission plate; 10. Connecting rod; 11. Second inclined surface. Detailed Implementation

[0022] The technical solutions of this utility model will be clearly and completely described below with reference to the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of this utility model.

[0023] like Figures 1 to 7As shown in the figure, this utility model embodiment proposes a pull-out type blind rivet, including a rivet body 1, a retaining plate 3 installed at one end of the rivet body 1, a rivet core 5 installed through the rivet body 1 and the retaining plate 3, a connecting rod 10 installed at one end of the rivet core 5, a pull-out block 6 sleeved on the outer side of the connecting rod 10, and the connecting rod 10 and the pull-out block 6 are fixedly connected. The pull-out block 6 is attached to the end of the rivet body 1 away from the retaining plate 3. A plurality of opening grooves 2 are provided through the outer side of the tube of the rivet body 1. A locking mechanism 9 is installed between the connecting rod 10 and the pull-out block 6. The locking mechanism 9 includes a plurality of temporary racks 901, which are arranged in a circular pattern on the pull-out block. Inside 6, the temporary storage rack 901 corresponds one-to-one with each of the lace arc surfaces of the rivet body 1. The temporary storage rack 901 is equipped with a transmission plate 905, and the transmission plate 905 is inclined. A pressure block 903 is installed on the side of the transmission plate 905 away from the connecting rod 10. The temporary storage rack 901 is provided with a deformation groove 902 on the side away from the connecting rod 10. The end of the pressure block 903 away from the transmission plate 905 is engaged and installed inside the deformation groove 902. Several push blocks 904 are installed on the outside of the connecting rod 10. The end of the push block 904 away from the connecting rod 10 is parallel to the transmission plate 905.

[0024] like Figures 2 to 7 As shown, in another embodiment of the present invention, a plurality of guide plates 7 are installed on the side of the pull flower block 6 near the rivet body 1. The guide plates 7 are respectively engaged and installed inside the flower-shaped groove 2. A first inclined surface 8 is provided inside the end of the rivet body 1 away from the clamping plate 3. A second inclined surface 11 is provided on the end of the pull flower block 6 near the rivet body 1. The first inclined surface 8 and the second inclined surface 11 are in contact with each other. A plurality of anti-slip pads 4 are installed on the side of the clamping plate 3 near the rivet body 1.

[0025] Align the rivet 1 with the material to be riveted, and pull the rivet core 5 with a tool. The rivet core 5 drives the pull block 6 to move towards the clamping plate 3 via the connecting rod 10. At this time, the second inclined surface 11 of the pull block 6 slides against the first inclined surface 8 of the rivet 1, generating a lateral thrust. This pushes the outer side of the rivet 1 to spread outward along the flower-shaped groove 2, forming a regular flower-shaped anchoring structure. The cooperation between the first inclined surface 8 and the second inclined surface 11 ensures that the petals of the rivet 1 are evenly spread, avoiding the petals being crooked or locally deformed in traditional riveting, and improving the stability and aesthetics of the anchoring structure. Then, the guide plate 7 on the pull block 6 engages in the flower-shaped groove 2, further constraining the spreading direction of the rivet 1 petals and preventing the anchoring force from being dispersed due to uneven diffusion.

[0026] When the rivet 1 is fully opened, the nail core 5 is pulled. The connecting rod 10 drives the push block 904 to squeeze the inclined transmission plate 905. The transmission plate 905 is squeezed and deformed, pushing the pressure block 903 to move towards the deformation groove 902. The pressure block 903 squeezes the end of the lace block 6 near the material through the deformation groove 902, causing it to undergo local concave deformation. Finally, it tightly engages with the rivet 1 and the material to form a mechanical locking structure.

[0027] Through the mechanical transmission chain of push block 904, transmission plate 905, and pressure block 903, the tension of nail core 5 is converted into local extrusion force of lace block 6, so that lace block 6 forms multi-point engagement with rivet body 1 and material, significantly improving the connection strength between nail core 5 and rivet body 1, and avoiding loosening caused by long-term vibration or stress. Then, deformation groove 902 provides movement space for pressure block 903, allowing lace block 6 to produce controllable deformation when under force. The locking effect is more reliable because it is locked by plastic deformation rather than simply by friction.

[0028] The anti-slip pad 4 further suppresses the relative displacement between the rivet 1 and the material by increasing the friction of the contact surface, forming a dual anti-loosening mechanism with the mechanical locking structure.

[0029] The working principle of this type of pull-out rivet:

[0030] In use, first align the rivet body 1 with the material to be riveted, and pull the rivet core 5 with a tool. The rivet core 5 drives the flower block 6 to move towards the clamping plate 3 via the connecting rod 10. At this time, the second inclined surface 11 of the flower block 6 slides against the first inclined surface 8 of the rivet body 1, generating a lateral thrust, which pushes the outer side of the rivet body 1 to spread outward along the flower-shaped groove 2, forming a regular flower-shaped anchoring structure. The cooperation between the first inclined surface 8 and the second inclined surface 11 ensures that the petals of the rivet body 1 are evenly spread. Then, when the rivet body 1 has reached its maximum flower shape, continue to pull the rivet core 5. The connecting rod 10 drives the push block 904 to squeeze the inclined transmission plate 905. The transmission plate 905 is squeezed and deformed, pushing the pressure block 903 to move towards the deformation groove 902. The pressure block 903 squeezes the end of the flower block 6 near the material through the deformation groove 902, causing it to undergo local concave deformation, and finally tightly engages with the rivet body 1 and the material, forming a mechanical locking structure.

[0031] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating this utility model, and are not intended to limit the implementation of this utility model. For those skilled in the art, other variations or modifications can be made based on the above description. It is impossible to exhaustively list all the implementation methods here. Any obvious variations or modifications derived from the technical solutions of this utility model are still within the protection scope of this utility model.

Claims

1. A pull-plug type self-plugging rivet comprising a rivet body (1), characterized in that: A retaining plate (3) is installed at one end of the rivet body (1). A nail core (5) is installed through the rivet body (1) and the retaining plate (3). A connecting rod (10) is installed at one end of the nail core (5). A pull-flower block (6) is sleeved on the outside of the connecting rod (10), and the connecting rod (10) and the pull-flower block (6) are fixedly connected. The pull-flower block (6) is attached to the end of the rivet body (1) away from the retaining plate (3). Several flower-shaped grooves (2) are provided through the outside of the tube of the rivet body (1). A locking mechanism (9) is installed between the connecting rod (10) and the pull-flower block (6). The locking mechanism (9) includes several temporary storage racks (901). The temporary storage racks (901) are arranged in a circular row inside the pull-flower block (6), and the temporary storage racks are arranged in a circular row inside the pull-flower block (6). Each of the frame (901) corresponds to a single lace arc surface of the rivet body (1). The temporary storage frame (901) is equipped with a transmission plate (905), and the transmission plates (905) are all inclined. A pressure block (903) is installed on the side of the transmission plate (905) away from the connecting rod (10). A deformation groove (902) is provided on the side of the temporary storage frame (901) away from the connecting rod (10). The end of the pressure block (903) away from the transmission plate (905) is respectively engaged and installed inside the deformation groove (902). Several push blocks (904) are installed on the outside of the connecting rod (10). The end of the push block (904) away from the connecting rod (10) is parallel to the transmission plate (905).

2. A pull-tab style self-plunging rivet according to claim 1, wherein: The flower block (6) is equipped with several guide plates (7) on the side near the rivet body (1), and the guide plates (7) are respectively engaged and installed inside the flower slot (2).

3. A pull-truckle type self-clinching rivet according to claim 1, wherein: The riveting body (1) has a first inclined surface (8) at the end away from the card plate (3), and the lace block (6) has a second inclined surface (11) at the end near the riveting body (1). The first inclined surface (8) and the second inclined surface (11) are in contact with each other.

4. A pull-truckle type self-clinching rivet according to claim 1, wherein: Several anti-slip pads (4) are installed on the side of the card plate (3) near the rivet body (1).

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