Anti-loose rivet

Abstract

The invention relates to the technical field of rivet manufacturing, in particular to an anti-loose rivet which comprises a connecting cap, a core column, a protrusion and a baffle, caulking grooves are evenly formed in the inner side wall of the connecting cap at intervals, mucus layers are arranged in inner cavities of the caulking grooves, seepage holes used for being communicated with the inner cavities of the caulking grooves are formed in the outer wall of the connecting cap, and the mucus layers are arranged in the seepage holes. A plugging structure used for preventing the mucus layer from leaking out of the connecting cap without external force is arranged in an inner cavity of the seepage hole, an extrusion structure used for extruding the mucus layer out of the connecting cap is arranged at the end, close to the protrusion, of the caulking groove, the core column is pulled, so that the protrusion is extruded into the cavity of the connecting cap, the extrusion structure is triggered, and the mucus layer is extruded out of the connecting cap. Under the action of pressure, the mucus layer opens the plugging structure, so that the mucus layer flows out along the seepage holes. Through the scheme, the riveting stability is improved, and the phenomenon of riveting failure is reduced.

Description

Technical Field

[0001] The present application relates to the technical field of rivet manufacturing, and in particular to an anti-loosening rivet. Background Art

[0002] A rivet is a nail-shaped object used to connect two parts with a through hole and a cap at one end. In riveting, the parts being riveted are connected by their own deformation or interference fit. There are many types of rivets, and they are not restricted to any form. Commonly used ones include R-type rivets, fan rivets, blind rivets (core rivets), tree rivets, semi-round heads, flat heads, semi-hollow rivets, solid rivets, countersunk rivets, blind rivets, and hollow rivets. Existing rivets usually deform the rivet head by pulling the middle core column, thereby achieving the purpose of riveting the two objects to be riveted to each other.

[0003] The known existing rivet includes a connecting cap, a baffle coaxially fixed to one end of the connecting cap, a core column sliding in the connecting cap, and a protrusion arranged at the end of the core column. The protrusion is located at the end of the connecting cap away from the baffle.

[0004] During the riveting process, the connecting cap is inserted into the through hole opened between the two objects, and then the core column is pulled so that the protrusion squeezes the connecting cap close to one end of the protrusion, thereby deforming the end of the connecting cap at one end of the protrusion, thereby clamping the two objects between the deformed end and the baffle, and finally achieving riveting.

[0005] From the above technology, it can be seen that when two riveted objects are used for a long time, as time goes by, the stability of the riveting between the two objects will fail as it only depends on the deformation of the end of the connecting cap and the pressing force between the baffles, which can easily lead to an unstable connection between the two objects. Summary of the Invention In order to improve the problem of easy failure after riveting, the present application provides an anti-loosening rivet.

[0006] The anti-loosening rivet provided in this application adopts the following technical solution: A kind of anti-loosening rivet comprises a connecting cap, a core column, a protrusion and a baffle, the inner side wall of the connecting cap is provided with embedding grooves at even intervals, the inner cavity of the embedding groove is equipped with a mucus layer, the outer wall of the connecting cap is provided with a seepage hole for communicating with the inner cavity of the embedding groove, the inner cavity of the seepage hole is provided with a sealing structure for preventing the mucus layer from leaking out of the connecting cap in the absence of external force, the embedding groove is provided with an extrusion structure for squeezing the mucus layer out of the connecting cap at one end close to the protrusion, the core column is pulled to make the protrusion squeeze into the connecting cap cavity and trigger the extrusion structure, so that the mucus layer opens the sealing structure under the action of pressure, and then the mucus layer flows out along the seepage hole.

[0007] By employing this technical solution, when the stem is pulled for riveting, the protrusion presses against the components of the extrusion structure, thereby enlarging the inner cavity of the caulking groove. This forces the sealing structure to open the seepage hole, allowing the mucus layer to flow through the seepage hole and penetrate to the side of the connecting cap that contacts the riveted object until it solidifies. This improves the stability of the riveting joint and reduces the risk of riveting failure.

[0008] Optionally, the blocking structure includes a rubber plug fixed in the inner cavity of the seepage hole, a seepage gap is provided in the rubber plug, and in an initial state, the seepage gap is in a closed state.

[0009] By adopting the above technical solution, in the initial state, the seepage gap is sealed by the performance of the plug's own material, isolating the mucus layer from the outside world, and at the same time making it difficult for the mucus layer to flow out of the seepage hole.

[0010] Optionally, an annular groove is provided on the outer wall of one end of the connecting cap close to the protrusion, the outer wall of the protrusion is arc-shaped, the middle diameter of the protrusion is larger than the diameter at both ends, the part where the protrusion is connected to the core column is arc-shaped, and the diameter of the end of the protrusion close to the core column is equal to the diameter of the core column.

[0011] By adopting the above technical solution, when the protrusion contacts the inner wall of the end of the connecting cap, it is easier for the portion of the connecting cap located between the annular groove and the protrusion to deform.

[0012] Optionally, the extrusion structure includes a pressing block sliding in the embedding groove, a touch rod arranged on the pressing block, and an elastic member arranged in the embedding groove to reset the pressing block, and the touch rod is fixed to the side of the pressing block facing away from the elastic member.

[0013] By adopting the above technical solution, during the riveting process, the bulged part in the middle of the protrusion is caused to resist the pressure block and slide along the axial direction of the connecting cap, thereby increasing the pressure in the inner cavity of the embedding groove, and then forcing the seepage gap to open, so that the mucus layer flows out along the seepage gap, and finally further bonding and fixing the outer side of the connecting cap to the riveted object.

[0014] Optionally, a plurality of first thorns are evenly spaced apart on a side of the baffle facing the connecting cap, and a plurality of second thorns are evenly spaced apart in the annular groove.

[0015] During the riveting process of two objects, one of the objects is set as the first object and the other object is set as the second object. By adopting the above technical solution, after riveting, the first thorn is abutted against the side wall of the second object. After the riveting is completed, the second thorn is abutted against the side wall of the first object, further improving the stability of the connection.

[0016] Optionally, separation grooves are provided on the side wall of the core column, and a plurality of separation grooves are distributed in a circular shape around the axial direction of the core column.

[0017] By adopting the above technical solution, the core column is pulled to deform and break the separation groove, thereby indicating that the rivet is in place. By pulling the core column off from the separation groove, it is difficult for other personnel to hit the core column in the opposite direction after riveting, thereby ensuring the stability of the riveting.

[0018] Optionally, the annular groove separates the connecting cap into a deformation section and a connecting section, and the material of the deformation section has a lower hardness than that of the connecting section.

[0019] By adopting the above technical solution, the convenience of riveting is improved.

[0020] Optionally, a plurality of strip-shaped deformation grooves are evenly spaced on the inner wall of one end of the connecting cap, and the plurality of strip-shaped deformation grooves are distributed in a circular shape around the axial direction of the protrusion.

[0021] By adopting the above technical solution, during the process of pulling the core column, the end of the connecting cap with the deformation groove can be easily bent and deformed into a round shape, thereby contacting the outside of the object, making the riveting process easier and improving the convenience of riveting.

[0022] In summary, this application includes at least one of the following beneficial technical effects: 1. When the core is pulled to perform riveting, the protrusion squeezes the components of the extrusion structure, thereby enlarging the inner cavity of the caulking groove. This forces the sealing structure to open the seepage hole, allowing the mucus layer to flow out through the seepage hole and penetrate to the side of the connecting cap that contacts the riveted object until it solidifies. This improves the stability of the riveting and reduces the phenomenon of riveting failure. 2. By setting the first thorn and the second thorn, after riveting, the first thorn abuts against the side wall of the second object, and after riveting is completed, the second thorn abuts against the side wall of the first object, further improving the stability of the connection. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0024] Figure 1 It is a schematic diagram of the prior art.

[0025] Figure 2 It is a schematic diagram of the overall structure of this application.

[0026] Figure 3 It is a structural diagram of the baffle in this application.

[0027] Figure 4It is a cross-sectional view of the baffle portion in this application, mainly used to show a schematic diagram of the mucus layer portion.

[0028] Figure numerals: 1. connecting cap; 2. core column; 3. protrusion; 4. baffle; 5. embedding groove; 6. mucus layer; 7. seepage hole; 8. sealing structure; 9. extrusion structure; 10. rubber plug; 11. seepage gap; 12. annular groove; 13. pressing block; 14. touch rod; 15. elastic member; 16. first thorn; 17. second thorn; 18. separation groove; 19. deformation section; 20. connecting section; 21. deformation groove. DETAILED DESCRIPTION

[0029] The following is combined with Figure 1-4 This application is described in further detail.

[0030] Reference Figure 1 As is known in the prior art, a rivet comprises a connecting cap 1 and a baffle 4, which is coaxially fixed to one sidewall of the connecting cap 1. The rivet also comprises a stem 2 and a protrusion 3, which is fixed to one end of the stem 2. The stem 2 is inserted into the inner cavity of the connecting cap 1. During the actual riveting process, by pulling the end of the stem 2 away from the protrusion 3, the protrusion 3 squeezes the end of the connecting cap 1, deforming it, thereby clamping the riveted object between the deformed portion and the baffle 4.

[0031] An embodiment of the present application discloses an anti-loosening rivet.

[0032] Reference Figure 2 A locking rivet includes a connecting cap 1, a core column 2, a protrusion 3, and a baffle 4. In this embodiment, an annular groove 12 is formed on the outer wall of the connecting cap 1 near the protrusion 3. The annular groove 12 divides the connecting cap 1 into a deformation section 19 and a connection section 20. The deformation section 19 is made of a material with a lower hardness than the connection section 20.

[0033] Reference Figure 2 To facilitate the deformation of the extrusion deformation section 19 during the pulling of the stem 2, the protrusion 3 is configured with an outer wall having an arc shape, and the diameter of the middle portion of the protrusion 3 is larger than the diameters at both ends. The portion where the protrusion 3 connects to the stem 2 is configured with an arc shape, and the diameter of the end of the protrusion 3 closest to the stem 2 is equal to the diameter of the stem 2.

[0034] Reference Figure 2After riveting is complete, the stem 2 located outside the connecting cap 1 is cut off to minimize interference with the object being riveted during use. Several separation grooves 18 are formed on the sidewall of the stem 2, distributed in a circular pattern around the axial direction of the stem 2. Initially, the separation grooves 18 are located within the inner cavity of the connecting cap 1. At the end of the riveting operation, the stem 2 is broken off at the separation grooves 18, which not only improves the aesthetics of the riveted connection but also minimizes interference with the object being riveted during use.

[0035] Reference Figure 2 and Figure 3 To further enhance riveting convenience, the deformable section 19 is made to deform more easily during the riveting process. A plurality of evenly spaced deformable grooves 21 are formed on the inner wall of the deformable section 19 of the connecting cap 1. These deformable grooves 21 are distributed in a circular pattern around the axial direction of the protrusion 3. Initially, the axial direction of the deformable grooves 21 is parallel to the axial direction of the stem 2.

[0036] Reference Figure 4 To prevent the riveted objects from loosening after riveting, a caulking groove 5 is formed on the side wall of the connecting cap 1. The inner cavity of the caulking groove 5 is filled with a mucus layer 6, which in this embodiment is glue. Several liquid seepage holes 7 are evenly spaced on the outer wall of the connecting cap 1, connecting the inner cavity of the caulking groove 5.

[0037] Reference Figure 4 In the initial state, in order to prevent the mucus layer 6 from leaking out of the connecting cap 1 in the absence of external force, a sealing structure 8 is provided in the inner cavity of the seepage hole 7. The sealing structure 8 includes a rubber plug 10 and a seepage slit 11 formed in the rubber plug 10. Due to the elasticity of the rubber plug 10, the seepage slit 11 is kept closed in the absence of external force.

[0038] Reference Figure 2 and Figure 4 A squeezing structure 9 is also provided within the recess 5 to squeeze the mucus layer 6 out of the connecting cap 1. The squeezing structure 9 is located on the connecting cap 1. Pulling the stem 2 causes the protrusion 3 to squeeze into the inner cavity of the deformed section 19, simultaneously actuating the squeezing structure 9. Under the action of pressure, the mucus layer 6 opens the seepage gap 11, allowing the mucus layer 6 to flow out through the seepage hole 7.

[0039] Reference Figure 2 and Figure 4The extrusion structure 9 includes a pressing block 13, a contact rod 14, and an elastic member 15. The pressing block 13 slides within the inner cavity of the embedded groove 5. The contact rod 14 is fixed to the side of the pressing block 13 facing away from the mucus layer 6. The end of the contact rod 14 away from the pressing block 13 faces the protrusion 3. In the initial state, to facilitate the reset of the pressing block 13, an elastic member 15 is provided within the inner cavity of the embedded groove 5. The elastic member 15 is a spring. One end of the spring is fixed to the inner wall of the embedded groove 5, and the other end is fixed to the side wall of the pressing block 13. The spring is located within the mucus layer 6.

[0040] Reference Figure 3 and Figure 4 To further enhance riveting stability, several first spikes 16 are evenly spaced apart on the side of the baffle 4 facing the connection cap 1, and several second spikes 17 are evenly spaced apart within the annular groove 12. During the riveting process, one object is set as the first object and the other as the second object. After riveting, the first spikes 16 abut the sidewall of the second object. After the riveting is complete, the second spikes 17 abut the sidewall of the first object, further ensuring riveting stability.

[0041] Unless otherwise defined, the technical or scientific terms used in this application shall have the usual meanings understood by persons of ordinary skill in the field to which this application belongs. The words "first", "second", "third" and similar terms used in the specification and claims of this application do not indicate any order, quantity or importance, but are only used to distinguish different components. Words such as "one" or "a" do not indicate a quantity limitation, but rather indicate the existence of at least one. Words such as "include" or "comprise" mean that the elements or objects appearing before "include" or "comprises" cover the elements or objects listed after "include" or "comprises" and their equivalents, and do not exclude other elements or objects. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0042] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. An anti-loosening rivet, comprising a connecting cap (1), a core column (2), a protrusion (3) and a baffle (4), characterized in that: The inner wall of the connecting cap (1) is provided with embedding grooves (5) at regular intervals, and the inner cavity of the embedding grooves (5) is provided with a mucus layer (6). The outer wall of the connecting cap (1) is provided with a seepage hole (7) for communicating with the inner cavity of the embedding grooves (5). The inner cavity of the seepage hole (7) is provided with a blocking structure (8) for preventing the mucus layer (6) from leaking to the outside of the connecting cap (1) in the absence of external force. The embedding groove (5) is provided with an extrusion structure (9) for squeezing the mucus layer (6) out of the connecting cap (1) at one end close to the protrusion (3). The core column (2) is pulled so that the protrusion (3) is squeezed into the cavity of the connecting cap (1) and the extrusion structure (9) is triggered, so that the mucus layer (6) opens the blocking structure (8) under the action of pressure, and then the mucus layer (6) flows out along the seepage hole (7).

2. The anti-loosening rivet according to claim 1, characterized in that: The blocking structure (8) comprises a rubber plug (10) fixed in the inner cavity of the seepage hole (7), wherein a seepage gap (11) is provided in the rubber plug (10), and in an initial state, the seepage gap (11) is in a closed state.

3. The anti-loosening rivet according to claim 2, characterized in that: An annular groove (12) is provided on the outer wall of one end of the connecting cap (1) close to the protrusion (3); the outer wall of the protrusion (3) is in an arc shape; the diameter of the middle portion of the protrusion (3) is larger than the diameters at both ends; the portion where the protrusion (3) is connected to the core column (2) is in an arc shape; and the diameter of the end of the protrusion (3) close to the core column (2) is equal to the diameter of the core column (2).

4. The anti-loosening rivet according to claim 3, characterized in that: The extrusion structure (9) comprises a pressing block (13) sliding in the embedded groove (5), a touch rod (14) arranged on the pressing block (13), and an elastic member (15) arranged in the embedded groove (5) for resetting the pressing block (13); the touch rod (14) is fixed on the side of the pressing block (13) facing away from the elastic member (15).

5. The anti-loosening rivet according to claim 4, characterized in that: A plurality of first thorns (16) are evenly spaced apart on one side of the baffle (4) facing the connecting cap (1), and a plurality of second thorns (17) are evenly spaced apart in the annular groove (12).

6. The anti-loosening rivet according to claim 5, characterized in that: Separation grooves (18) are provided on the side wall of the core column (2), and a plurality of separation grooves (18) are distributed in a circular pattern around the axial direction of the core column (2).

7. The anti-loosening rivet according to claim 6, characterized in that: The annular groove (12) divides the connecting cap (1) into a deformation section (19) and a connecting section (20); the material of the deformation section (19) is lower in hardness than the material of the connecting section (20).

8. The anti-loosening rivet according to claim 7, characterized in that: A plurality of strip-shaped deformation grooves (21) are evenly spaced apart on the inner wall of one end of the connecting cap (1), and the plurality of strip-shaped deformation grooves (21) are distributed in a circular manner around the axial direction of the protrusion (3).

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