Special-shaped single-drum rivet

Abstract

The utility model relates to the technical field of rivets, in particular to a special-shaped single-drum rivet which comprises a rivet core and a rivet shell arranged on the rivet core in a sleeving mode. The rivet core comprises a rivet head, a riveting section, a snapping section and a rivet rod which are sequentially arranged in the length direction of the rivet core, and first cross grain teeth and second cross grain teeth are arranged on the peripheral face of the riveting section in a surrounding mode. The nail shell comprises a nail shell body and a nail cap, and an inverted circular truncated cone is arranged at the end, away from the nail shell body, of the nail cap. When the rivet core and the rivet shell are assembled, the rivet shell is located on the side, close to the riveting section, of the rivet head, the rivet head abuts against the end, away from the rivet cap, of the rivet shell body, and the inner wall of the inverted circular truncated cone is meshed with the second transverse grain teeth during rivet pulling. According to the special-shaped single-drum rivet, the rivet core is locked, the situation that workpiece connection is loosened due to the fact that the rivet core falls off from the rivet shell is avoided, a riveting part is prevented from being fractured under the action of external force, and the problems that the riveting part of a workpiece riveted through a traditional rivet is prone to being fractured, stable connection between the workpieces cannot be guaranteed, and the service life of the workpiece is prolonged are solved. And the problems of low tensile and shear resistance and low capability of preventing the rivet core from being ejected are solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to rivet technical field, especially a kind of single drum rivet of different shape. BACKGROUND

[0002] Rivets are widely used in construction, automobile, machine and many fields with its high strength, high sealing and easy installation etc., and its types are various, including blind rivet, hollow rivet, countersunk head rivet etc., can satisfy different operation needs.In actual operation, the tail of rivet is first fixed in the head of rivet gun, then the head of rivet is passed through the preset hole of the workpiece to be fixed, and the rivet core is displaced and partially broken by starting rivet gun, so as to realize the firm connection between workpieces.

[0003] However, when the workpiece is riveted by traditional rivet, the riveting part is prone to breakage under external force, and even the rivet core is detached from the shell, causing the loosening of workpiece connection, which is difficult to ensure the stable connection between workpieces, and has the problems of low tensile and shear resistance and low prevention of rivet core ejection, which cannot meet the strict requirements of connection strength between workpieces. SUMMARY

[0004] The utility model discloses a kind of single drum rivet of different shape, realize locking rivet core, avoid the situation that rivet core is detached from the shell and causes workpiece connection loosening, prevent the breakage of riveting part under external force, solve the breakage of riveting part of the workpiece riveted by traditional rivet, cannot guarantee the stable connection between workpieces, and have the problems of low tensile and shear resistance and low prevention of rivet core ejection.

[0005] To achieve the above object, the utility model provides a kind of single drum rivet of different shape, comprising: rivet core and the shell of being set in the rivet core;The rivet core includes rivet head, riveting section, break section and rivet rod sequentially arranged along the length direction of itself, the outer circumferential surface of riveting section is provided with first cross grain tooth and second cross grain tooth, the first cross grain tooth is located at the end of riveting section close to the rivet head, and the second cross grain tooth is located at the end of riveting section close to the break section;

[0006] The shell includes shell body and rivet cap connected, the inner hole is provided in the shell along the axis direction thereof and penetrates, the inner hole is used for the rivet core to pass through and be assembled with the shell, and the end of the shell body away from the rivet cap is provided with inverted round table;

[0007] When the rivet core is assembled with the shell, the shell is located at the side of rivet head close to riveting section, the rivet head is abutted with the end of the shell body away from the rivet cap, and the inner wall of inverted round table is engaged with the second cross grain tooth during riveting.

[0008] Optionally, the break-off section is provided with a breakage groove along a circumferential direction of the break-off section, the inner hole comprises a first through hole and a second through hole arranged along an axial direction of the nail shell in sequence, the first through hole is arranged corresponding to the first cross serration tooth, the second through hole is arranged corresponding to the second cross serration tooth and the breakage groove, a diameter of the first through hole is larger than a diameter of the second through hole, the first through hole and the second through hole are coaxially arranged and communicated, and the first through hole is located at one end of the second through hole away from the nail cap.

[0009] Optionally, the single-drum rivet further comprises a sealing washer, the nail cap is further provided with a connecting table, the connecting table is arranged at an end of the nail cap close to the nail shell body, an open sealing groove is arranged at the end of the connecting table close to the nail shell body, and the sealing groove is used for placing the sealing washer.

[0010] Optionally, the sealing groove and the sealing washer are annular, and the sealing washer is sleeved on the nail shell body.

[0011] Optionally, the sealing washer is an elastic washer, the sealing groove is in the shape of an inverted circular table, the sealing washer is in the shape of a cylinder, and an outer diameter D1 of the sealing groove is larger than an outer diameter D2 of the sealing washer.

[0012] Optionally, the inverted circular table extends away from the riveting section, an outer diameter of the inverted circular table gradually decreases from one end close to the nail shell body to one end away from the nail shell body, and an outer diameter of the connecting table is larger than a maximum outer diameter of the inverted circular table.

[0013] Optionally, an outer diameter of the nail head is larger than a diameter of the riveting section, a diameter of the break-off section and a diameter of the nail rod.

[0014] Optionally, an outer circumferential surface of the nail rod is provided with a third cross serration tooth, and the third cross serration tooth is arranged around the outer circumferential surface of the nail rod.

[0015] Optionally, the first cross serration tooth and the second cross serration tooth are spaced apart along a length direction of the riveting section, the third cross serration tooth is spaced apart along a length direction of the nail rod, a first groove is arranged between adjacent two first cross serration teeth, a second groove is arranged between adjacent two second cross serration teeth, and a third groove is arranged between adjacent two third cross serration teeth.

[0016] Optionally, the first cross serration tooth is an arc-shaped serration tooth, and the second cross serration tooth and the third cross serration tooth are straight serration teeth.

[0017] Compared with the prior art, the embodiments of the utility model have the following beneficial effects:

[0018] Compared with the prior art, the embodiments of the utility model have the following beneficial effects:In the single drum rivet, the first cross grain tooth and the second cross grain tooth are respectively arranged at the end close to the rivet head and the end close to the breakage section of the riveting section, the end of the rivet shell body close to the rivet head is tightly engaged with the first cross grain tooth, and the inner wall of the inverted circular platform is tightly engaged with the second cross grain tooth, so that the rivet core is locked, the rivet core is prevented from falling off from the rivet shell and causing the workpiece connection to be loose, the single drum rivet is tightly connected with the workpiece, the riveting part is prevented from being broken under the action of external force, the stable connection between the workpieces is ensured, the single drum rivet has the characteristics of high tensile and shear resistance and high prevention of the rivet core ejection, and can meet the strict requirements of the workpieces on the connection strength. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is a partial sectional view of the single drum rivet of one embodiment of the utility model;

[0020] Figure 2 It is a structure schematic view of the rivet core of the single drum rivet of one embodiment of the utility model;

[0021] Figure 3 It is a sectional view of the rivet shell of the single drum rivet of one embodiment of the utility model;

[0022] Figure 4 It is a structure schematic view of the single drum rivet of one embodiment of the utility model after the single drum rivet passes through two workpieces to be riveted;

[0023] Figure 5 It is Figure 1 It is an enlarged view of A in the figure;

[0024] Figure 6 It is a structure schematic view of the rivet shell and the sealing washer of the single drum rivet of one embodiment of the utility model;

[0025] Figure 7 It is a partial sectional view of the single drum rivet of one embodiment of the utility model after riveting is completed;

[0026] Figure 8 It is a structure schematic view of the single drum rivet of one embodiment of the utility model and the riveting process of the rivet gun;

[0027] Figure 9 It is a structure schematic view of the single drum rivet of one embodiment of the utility model and the riveting process of the rivet gun after riveting is completed.

[0028] In the drawings: 1, nail core; 11, nail head; 12, riveting section; 121, first cross grain tooth; 1211, first groove; 122, second cross grain tooth; 1221, second groove; 13, break section; 131, fracture groove; 14, nail rod; 141, third cross grain tooth; 1411, third groove; 142, angle of repulsion; 2, nail shell; 21, nail shell body; 22, nail cap; 221, inverted cone; 222, connecting platform; 2221, sealing groove; 23, first through hole; 24, second through hole; 3, sealing ring; 4, workpiece; 5, rivet gun; 51, gun nozzle. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0030] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present application are only used to explain the relative positional relationship, movement condition, etc. between components in a certain specific posture (as shown in the drawings), and if the specific posture changes, the directional indications will also change accordingly.

[0031] In the present application, unless otherwise explicitly specified and limited, the terms "connection", "fixation" and the like should be understood broadly, for example, "fixation" can be fixed connection, or detachable connection, or integral; can be mechanical connection, or electrical connection; can be direct connection, or indirect connection through an intermediate medium; can be internal connection of two elements or interaction relationship between two elements, unless otherwise explicitly limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0032] In addition, the description of "first", "second" and the like in the present application is only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the technical features or implying the number of the indicated technical features. Therefore, the features limited by "first" and "second" can be explicitly or implicitly included at least one of the features. In addition, the meaning of "and / or" appearing throughout the text is to include three parallel schemes, for example, "A and / or B" includes A scheme, or B scheme, or A and B scheme. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the realization of the ordinary skilled in the art, when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, nor in the protection scope required by the present application.

[0033] The utility model provides a single drum rivet of different shape.

[0034] In the embodiments of the present application, Figures 1-3 and 7, the single drum rivet of different shape includes: a nail core 1 and a nail shell 2 sleeved on the nail core 1;The nail core 1 includes a nail head 11, a riveting section 12, a break section 13 and a nail rod 14 arranged in sequence along the length direction of itself, the outer peripheral surface of the riveting section 12 is provided with a first cross grain tooth 121 and a second cross grain tooth 122, the first cross grain tooth 121 is located at one end of the riveting section 12 close to the nail head 11, and the second cross grain tooth 122 is located at one end of the riveting section 12 close to the break section 13;

[0035] The nail shell 2 includes a nail shell body 21 and a nail cap 22 connected, and the inside of the nail shell 2 is provided with an inner hole penetrating along the axial direction thereof, the inner hole is used for the nail core 1 to pass through and assemble with the nail shell 2, and the end of the nail cap 22 away from the nail shell body 21 is provided with a rounded platform 221;

[0036] When the nail core 1 is assembled with the nail shell 2, the nail shell 2 is located at one side of the nail head 11 close to the riveting section 12, the nail head 11 abuts against one end of the nail shell body 21 away from the nail cap 22, and the inner wall of the rounded platform 221 engages with the second cross grain tooth 122 during riveting.

[0037] By setting the first cross grain tooth 121, in the riveting process, the riveting gun 5 generates a pulling force on the nail core 1, causing the nail core 1 to displace relative to the nail shell 2, the end of the nail shell body 21 close to the nail head 11 is deformed under the action of the riveting gun 5 and the nail core 1, forming a disc, at the same time, the inner hole of the nail shell 2 is shrunk, the inner hole corresponding to the end of the nail shell body 21 close to the nail head 11 is embedded in the first cross grain tooth 121, and the end of the nail shell body 21 close to the nail head 11 is tightly engaged with the first cross grain tooth 121, so that the nail shell 2 locks the nail core 1; by setting the second cross grain tooth 122 and the inverted circular platform 221, in the riveting process, the second cross grain tooth 122 gradually moves towards the direction of the inverted circular platform 221, and at the same time, the inverted circular platform 221 is gradually extruded into the gun nozzle 51 of the riveting gun 5, under the extrusion action of the gun nozzle 51, the inverted circular platform 221 is deformed, the inverted circular platform 221 is deformed and shrunk towards the central axis of itself, the inner wall of the inverted circular platform 221 is embedded in the second cross grain tooth 122, and the inner wall of the inverted circular platform 221 is tightly engaged with the second cross grain tooth 122, thereby further locking the nail core 1. In the present single drum rivet, the end of the riveting section 12 close to the nail head 11 and the end close to the break section 13 are respectively provided with the first cross grain tooth 121 and the second cross grain tooth 122, by tightly engaging the end of the nail shell body 21 close to the nail head 11 with the first cross grain tooth 121 and tightly engaging the inner wall of the inverted circular platform 221 with the second cross grain tooth 122, the nail core 1 is locked, which can avoid the situation that the nail core 1 falls off from the nail shell 2 and causes the connection of the workpiece 4 to be loose, and the present single drum rivet is tightly connected with the workpiece 4, preventing the riveting part from being broken under the action of external force, ensuring the stable connection between the workpieces 4, having the characteristics of high tensile and shear resistance and high prevention of nail core 1 ejection, and can well meet the strict requirements of the connection strength between the workpieces 4. The present single drum rivet solves the problem that the riveting part of the workpiece 4 riveted by using the traditional rivet is easy to break, cannot ensure the stable connection between the workpieces 4, and has low tensile and shear resistance and low prevention of nail core 1 ejection.

[0038] Further, the produced nail core 1 and nail shell 2 are assembled and pressed to fix and combine the nail core 1 and the nail shell 2 together, and they will not be loose, as shown in Figure 1 After the pressing is completed, the present single drum rivet has a waist drum part with small heads and a large middle, which is beneficial to the deformation of the end of the nail shell body 21 close to the nail head 11 during riveting, forming a disc, i.e. a single drum. When the assembled present single drum rivet is used for riveting, the gun nozzle 51 of the riveting gun 5 used is in the shape of a trumpet mouth, and the taper of the gun nozzle 51 is greater than that of the inverted circular platform 221, as shown in Figure 8As shown, during the riveting process, the nail core 1 moves towards the direction of the pull rivet gun 5 under the pulling force of the pull rivet gun 5, and the gun nozzle 51 in the shape of a trumpet continuously extrudes the inverted circular table 221, the inverted circular table 221 deforms, and the inverted circular table 221 shrinks towards the central axis direction of itself, so that the inner wall of the inverted circular table 221 is tightly engaged with the second cross grain tooth 122, as shown in FIG. 6. Figure 9 As shown, after the riveting is completed, the taper of the inverted circular table 221 increases, at this time, the taper of the inverted circular table 221 is the same as the taper of the gun nozzle 51, at this time, the workpieces 4 to be riveted are fixedly connected.

[0039] As shown in FIGS. 1 to 7, the pull-off section 13 is provided with a fracture groove 131 along the circumferential direction of the pull-off section 13, the inner hole includes a first through hole 23 and a second through hole 24 which are sequentially arranged along the axis direction of the nail shell 2, the first through hole 23 is arranged corresponding to the first cross grain tooth 121, the second through hole 24 is arranged corresponding to the second cross grain tooth 122 and the fracture groove 131, the diameter of the first through hole 23 is larger than the diameter of the second through hole 24, the first through hole 23 and the second through hole 24 are connected and coaxially arranged, and the first through hole 23 is located at one end of the second through hole 24 away from the nail cap 22. Figures 1-3 As shown in FIGS. 1 to 7, the pull-off section 13 is provided with a fracture groove 131 along the circumferential direction of the pull-off section 13, the inner hole includes a first through hole 23 and a second through hole 24 which are sequentially arranged along the axis direction of the nail shell 2, the first through hole 23 is arranged corresponding to the first cross grain tooth 121, the second through hole 24 is arranged corresponding to the second cross grain tooth 122 and the fracture groove 131, the diameter of the first through hole 23 is larger than the diameter of the second through hole 24, the first through hole 23 and the second through hole 24 are connected and coaxially arranged, and the first through hole 23 is located at one end of the second through hole 24 away from the nail cap 22.

[0040] By arranging the fracture groove 131, the nail core 1 is facilitated to break at the fracture groove 131, so that the nail rod 14 is separated from the nail core 1, thereby completing the riveting.

[0041] The inner hole includes a first through hole 23 and a second through hole 24 which are sequentially arranged along the axis direction of the nail shell 2, by arranging the first through hole 23 and the second through hole 24, and the diameter of the first through hole 23 is larger than the diameter of the second through hole 24, a "step" shaped inner hole is formed inside the nail shell 2, the diameter of the first through hole 23 is larger, so the hole wall corresponding to the first through hole 23 is thin, while the diameter of the second through hole 24 is smaller, so the hole wall corresponding to the second through hole 24 is thick. In this way, during the pull riveting, the first through hole 23 with thin hole wall is easy to expand and deform to form a disc, that is, a single drum, after the riveting is completed, the first cross grain tooth 121 is located in the first through hole 23, and the first through hole 23 corresponding to the end of the nail shell body 21 close to the nail head 11 is tightly engaged with the first cross grain tooth 121; while the second through hole 24 with thick hole wall plays a guiding role, which can avoid the inclination of the nail core 1 during the riveting process, after the riveting is completed, the second cross grain tooth 122 is located in the second through hole 24, and the second through hole 24 corresponding to the inverted circular table 221 is tightly engaged with the second cross grain tooth 122, under the cooperation of the first through hole 23, the second through hole 24, the first cross grain tooth 121 and the second cross grain tooth 122, the present special single drum rivet can effectively lock the nail core 1, ensure that the deformed nail shell 2 has high shear resistance, prevent the nail core 1 from falling off from the nail shell 2, and further ensure the stable connection between the workpieces 4.

[0042] As shown in FIGS. 1 to 7, the pull-off section 13 is provided with a fracture groove 131 along the circumferential direction of the pull-off section 13, the inner hole includes a first through hole 23 and a second through hole 24 which are sequentially arranged along the axis direction of the nail shell 2, the first through hole 23 is arranged corresponding to the first cross grain tooth 121, the second through hole 24 is arranged corresponding to the second cross grain tooth 122 and the fracture groove 131, the diameter of the first through hole 23 is larger than the diameter of the second through hole 24, the first through hole 23 and the second through hole 24 are connected and coaxially arranged, and the first through hole 23 is located at one end of the second through hole 24 away from the nail cap 22. Figure 1 , 3As shown in Figure 7, in one embodiment of this application, the irregular single-drum rivet further includes a sealing washer 3, and the rivet head 22 is also provided with a connecting platform 222. The connecting platform 222 is disposed at the end of the rivet head 22 near the rivet shell body 21. The end of the connecting platform 222 near the rivet shell body 21 has an open sealing groove 2221, which is used to place the sealing washer 3.

[0043] By setting a connecting platform 222 and a sealing groove 2221, the sealing groove 2221 is used to place the sealing gasket 3. Before riveting, when the end of the sealing gasket 3 facing away from the connecting platform 222 abuts against the workpiece 4, the rivet rod 14 can be put into the rivet gun 5, and then the riveting can begin. After the riveting is completed, a tight sealing interface is formed between the sealing gasket 3 and the workpiece 4. The tight fit between the two makes the riveting part have a good sealing effect, which can effectively improve the waterproofness of the riveting part. Therefore, the use of this special-shaped single-drum rivet can make the riveting part have the characteristics of being sealed and waterproof.

[0044] To further explain, the rivet housing 2 has a cylindrical structure, and the connecting platform 222 and the inverted frustum 221 are coaxially arranged. The cylindrical structure of the rivet housing 2 helps to insert this irregular single-drum rivet into the preset hole of the workpiece 4, improving the efficiency of the riveting operation; the coaxially arranged connecting platform 222 and inverted frustum 221 help to ensure that the irregular single-drum rivet is subjected to uniform force during riveting, further extending the service life of this irregular single-drum rivet.

[0045] like Figure 6 As shown, in one embodiment of this application, both the sealing groove 2221 and the sealing gasket 3 are annular, and the sealing gasket 3 is sleeved on the nail shell body 21.

[0046] In this irregular single-drum rivet, the sealing groove 2221 is matched with the sealing washer 3. By setting the sealing groove 2221 and the sealing washer 3 as annular, when the sealing washer 3 is fitted onto the rivet shell body 21, the sealing washer 3 can stably and tightly fit against the surface of the workpiece 4, thereby ensuring a good sealing effect at the riveting part. In addition, the annular design of the sealing groove 2221 and the sealing washer 3 makes the installation of the sealing washer 3 easier and can further improve the efficiency of the riveting operation.

[0047] like Figure 1 , 3 As shown in Figure 6, in one embodiment of this application, the sealing gasket 3 is an elastic gasket, the sealing groove 2221 is in the shape of an inverted frustum, the sealing gasket 3 is cylindrical, and the outer diameter D1 of the sealing groove 2221 is larger than the outer diameter D2 of the sealing gasket 3.

[0048] The sealing groove 2221 is in the shape of an inverted circular truncated cone, and the sealing washer 3 is in the shape of a cylinder. Since the sealing washer 3 is an elastic washer, it will be deformed during the riveting process. The sealing groove 2221 with a large outer diameter can provide a large space for the deformation of the sealing washer 3, so that the sealing washer 3 can closely fit the surface of the workpiece 4, thereby enhancing the sealing effect of the riveting part and playing a role in sealing and waterproofing. In addition, the sealing washer 3 can also absorb part of the vibration energy when subjected to vibration or impact, thereby playing a role in buffering and anti-vibration for the riveting part, so as to reduce the impact and wear of the riveting part and ensure the stable connection between the workpieces 4.

[0049] Further, the nail core 1 and the nail shell 2 are assembled first, and then the rivet head 11 of the assembled rivet is sequentially inserted through the preset holes of the two workpieces 4 to be riveted. Before the riveting, the thickness of the sealing washer 3 is greater than the depth of the sealing groove 2221. For example, in an optional embodiment, the depth of the sealing groove 2221 is 0.5 mm, and the thickness of the sealing washer 3 ranges from 0.8 mm to 1.0 mm. During the riveting process, the nail core 1 is subjected to the pulling force of the riveting gun 5, so that the end portion of the nail shell body 21 close to the rivet head 11 is deformed to form a disc. At this time, the disc portion drives the workpiece 4 in contact with the disc portion to move towards the other workpiece 4, and then the disc portion and the workpiece 4 generate a pressure on the sealing washer 3 towards the direction of the riveting gun 5. At the same time, the riveting gun 5 provides stable support for the inverted truncated cone 221 and the connecting table 222, so that the riveting gun 5 generates a pushing force on the sealing washer 3 towards the direction of the rivet head 11. Under the action of the nail core 1 and the riveting gun 5, the sealing washer 3 is gradually compressed. After riveting, the thickness of the sealing washer 3 is equal to the depth of the sealing groove 2221, thereby ensuring that the workpieces 4 to be riveted are stably and tightly connected.

[0050] Preferably, the sealing washer 3 is made of ethylene propylene diene rubber (EPDM). The sealing washer 3 made of EPDM has the characteristics of high weather resistance, high aging resistance, strong chemical corrosion resistance, high elasticity and high sealing performance, which can prolong the service life of the present single drum rivet.

[0051] Preferably, the connecting table 222 is in the shape of a cylinder. The connecting table 222 in the shape of a cylinder is conducive to the arrangement of the sealing groove 2221.

[0052] As shown in FIGS. 1, 2 and 3, the present single drum rivet comprises a nail core 1 and a nail shell 2. Figure 3 and 6 As shown in FIGS. 1, 2 and 3, the present single drum rivet comprises a nail core 1 and a nail shell 2.

[0053] The outer diameter of the inverted truncated cone 221 gradually decreases from the end close to the nail shell body 21 to the end away from the nail shell body 21, and the outer diameter of the connecting platform 222 is greater than the maximum outer diameter of the inverted truncated cone 221. In this way, the connecting platform 222 with a larger outer diameter not only facilitates the arrangement of the sealing groove 2221, but also can arrange a larger sealing groove 2221, so that the sealing groove 2221 can accommodate a larger sealing washer 3, thereby increasing the contact area between the sealing washer 3 and the workpiece 4, thereby effectively improving the sealing effect of the riveting part.

[0054] Preferably, the connecting platform 222 and the inverted truncated cone 221 are integrally formed.

[0055] Further, the inverted truncated cone 221, the connecting platform 222, the first through hole 23, the second through hole 24, the nail head 11, the riveting section 12, the break section 13 and the nail rod 14 are coaxially arranged, and their central axes coincide. The coaxial arrangement ensures that the single drum rivet uniformly bears force during the riveting process, and ensures that the riveting is smoothly completed.

[0056] As shown in Figure 2 , in an embodiment of the present application, the outer diameter of the nail head 11 is greater than the diameter of the riveting section 12, the diameter of the break section 13 and the diameter of the nail rod 14.

[0057] The outer diameter of the nail head 11 is greater than the diameter of the riveting section 12, the diameter of the break section 13 and the diameter of the nail rod 14. By using a nail head 11 with a suitable outer diameter, when the nail core 1 is subjected to the pulling force of the riveting gun 5, the end of the nail shell body 21 close to the nail head 11 expands and deforms to form a disc, and the inverted truncated cone 221 deforms and shrinks towards its central axis. At this time, the workpiece 4 to be riveted can be clamped between the nail head 11 and the deformed nail shell 2, and under the joint action of the nail head 11 and the deformed nail shell 2, the workpiece 4 to be riveted is stably and tightly connected.

[0058] Preferably, the end of the nail rod 14 away from the break section 13 is provided with an angle 142. By providing the angle 142, the single drum rivet can be more conveniently loaded into the riveting gun 5, and the efficiency of the riveting operation can be further improved.

[0059] As shown in Figure 1 , 2 and 4, in an embodiment of the present application, the outer periphery of the nail rod 14 is provided with a third cross grain tooth 141, and the third cross grain tooth 141 is arranged around the outer periphery of the nail rod 14.

[0060] By arranging the third transverse teeth 141 on the outer circumferential surface of the shank 14, and arranging the third transverse teeth 141 around the outer circumferential surface of the shank 14, the third transverse teeth 141 can cooperate with the locking tabs of the rivet gun 5 during riveting, ensuring that the self-identical single-drum rivet is stably fixed to the head of the rivet gun 5, preventing the locking tabs of the rivet gun 5 from slipping, avoiding the self-identical single-drum rivet from slipping in the rivet gun 5, and effectively improving the efficiency of riveting operation.

[0061] Preferably, the third transverse teeth 141 are arranged at the end of the shank 14 away from the break-off section 13.

[0062] As shown in FIGS. Figure 1 , 2 , 5 and 7, in an embodiment of the present application, the first transverse teeth 121 and the second transverse teeth 122 are spaced apart along the length direction of the riveting section 12, and the third transverse teeth 141 are spaced apart along the length direction of the shank 14. A first groove 1211 is arranged between adjacent two first transverse teeth 121, a second groove 1221 is arranged between adjacent two second transverse teeth 122, and a third groove 1411 is arranged between adjacent two third transverse teeth 141.

[0063] The first groove 1211 is arranged between adjacent two first transverse teeth 121, and the second groove 1221 is arranged between adjacent two second transverse teeth 122, which helps the end portion of the rivet shell body 21 corresponding to the inner hole to be embedded in the first groove 1211, and helps the inner hole corresponding to the rounded platform 221 to be embedded in the second groove 1221 during riveting, thereby improving the connection tightness between the rivet core 1 and the rivet shell 2, and further realizing locking of the rivet core 1 and improving the self-identical single-drum rivet's ability to prevent the rivet core 1 from being ejected. The third groove 1411 is arranged between adjacent two third transverse teeth 141, and the design of the third groove 1411 provides a clear clamping position for the locking tabs of the rivet gun 5. When the locking tabs are clamped into the third groove 1411, a tight cooperation is formed therebetween, which can stably fix the self-identical single-drum rivet to the head of the rivet gun 5, prevent the self-identical single-drum rivet from slipping, shaking or deviating during riveting, and ensure that riveting can be smoothly performed.

[0064] Further, the first groove 1211, the second groove 1221 and the third groove 1411 are all annular.

[0065] As shown in FIGS. Figure 1 and 2 , in an embodiment of the present application, the first transverse teeth 121 are arc-shaped teeth, and the second transverse teeth 122 and the third transverse teeth 141 are straight teeth.

[0066] Of course, in some embodiments of the present application, the first transverse tooth 121, the second transverse tooth 122 and the third transverse tooth 141 can also be designed as other teeth.

[0067] The riveting process of an embodiment of the present application is as follows:

[0068] Using the corresponding rivet gun 5 (the gun nozzle 51 of the rivet gun 5 is in the shape of a trumpet mouth) and the driving source, connecting the rivet gun 5 with the driving source, the nail head 11 is sequentially inserted into the preset holes of the two workpieces 4 (the preset holes of the two workpieces 4 are pre-processed in correspondence), until the end of the sealing washer 3 away from the connecting table 222 abuts against the workpiece 4, then the nail rod 14 is sleeved into the rivet gun 5, when the gun nozzle 51 abuts against the rounded table 221, the power switch of the rivet gun 5 is turned on, and the riveting operation is started. In the riveting process, the nail core 1 is subjected to the pulling force of the rivet gun 5, the nail core 1 moves relative to the nail shell 2, the end of the nail shell body 21 close to the nail head 11 gradually deforms to form a disc, and at the same time the inner hole of the nail shell 2 shrinks, the end of the nail shell body 21 close to the nail head 11 is embedded in the first transverse tooth 121, and the two are tightly engaged. With the increase of the pulling force of the nail core 1, the second transverse tooth 122 gradually moves towards the direction of the rounded table 221, and under the extrusion action of the gun nozzle 51, the rounded table 221 deforms, the rounded table 221 deforms and shrinks towards the central axis of the rounded table 221, and the inner wall of the rounded table 221 tightly engages with the second transverse tooth 122. When the pulling force of the rivet gun 5 on the nail core 1 reaches a certain value, the nail core 1 is broken at the fracture groove 131, the nail rod 14 falls off from the nail core 1, and the riveting is completed.

[0069] The technical principles of the present application are described above in combination with specific embodiments. These descriptions are only for the purpose of explaining the principles of the present application, and cannot be interpreted in any way as a limitation on the scope of protection of the present application. Based on the explanation here, those skilled in the art can think of other specific embodiments of the present application without creative labor, and these ways will fall within the scope of protection of the present application.

Claims

1. A non-parallel single-ram rivet characterized by, The application relates to a single drum rivet. The single drum rivet comprises a core and a shell. The core comprises a head, a riveting section, a breaking section and a shank arranged in sequence along the length direction of the core. The riveting section is surrounded by a first transverse tooth and a second transverse tooth.

2. The heteroform single-die rivet of claim 1, wherein, The shell comprises a shell body and a shell cap connected to each other.

3. The heteroform single-die rivet of claim 1, wherein, The shell is internally provided with an inner hole penetrating along the axial direction of the shell.

4. The heteroform single-die rivet of claim 3, wherein, The inner hole is used for the core to pass through and assemble with the shell.

5. The profiled single drum rivet of claim 3, wherein, The end of the shell cap away from the shell body is provided with a rounded platform.

6. The off-set single drum rivet of claim 5, wherein, The shell is located on the side of the head close to the riveting section when the core is assembled with the shell.

7. The off-set single drum rivet of claim 1 wherein, The head is in abutment with the end of the shell body away from the shell cap.

8. The off-set single drum rivet of claim 1 wherein, The inner wall of the rounded platform is in engagement with the second transverse tooth during riveting.

9. The off-set single drum rivet of claim 8, wherein, The breaking section is provided with a breaking groove along the circumferential direction of the breaking section.

10. The off-set single drum rivet of claim 9, wherein, The inner hole comprises a first through hole and a second through hole arranged in sequence along the axial direction of the shell. The first through hole is provided corresponding to the first transverse tooth. The second through hole is provided corresponding to the second transverse tooth and the breaking groove. The diameter of the first through hole is larger than that of the second through hole. The first through hole and the second through hole are coaxially arranged and connected. The first through hole is located at the end of the second through hole away from the shell cap. The single drum rivet further comprises a sealing washer. The shell cap is further provided with a connecting platform. The connecting platform is arranged at the end of the shell cap close to the shell body. The end of the connecting platform close to the shell body is provided with a sealing groove in an open manner. The sealing groove is used for placing the sealing washer. The sealing groove and the sealing washer are both annular. The sealing washer is sleeved on the shell body. The sealing washer is an elastic washer. The sealing groove is in the shape of a rounded platform. The sealing washer is in the shape of a cylinder. The outer diameter D1 of the sealing groove is larger than the outer diameter D2 of the sealing washer. The rounded platform extends away from the riveting section. The outer diameter of the rounded platform gradually decreases from the end close to the shell body to the end away from the shell body. The outer diameter of the connecting platform is larger than the maximum outer diameter of the rounded platform. The outer diameter of the head is larger than the diameter of the riveting section, the diameter of the breaking section and the diameter of the shank. The outer periphery of the shank is provided with a third transverse tooth. The first transverse tooth and the second transverse tooth are both arranged in a spaced manner along the length direction of the riveting section. The third transverse tooth is arranged in a spaced manner along the length direction of the shank. A first groove is arranged between two adjacent first transverse teeth. A second groove is arranged between two adjacent second transverse teeth. A third groove is arranged between two adjacent third transverse teeth. The first transverse tooth is in the shape of an arc tooth. The second transverse tooth and the third transverse tooth are both in the shape of straight teeth.

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