Flanging pressing rivet nut structure

Abstract

A flanging press-riveting nut structure relates to the technical field of nuts and comprises a nut body and a riveting plate matched with the nut body in a press-riveting mode, an inner threaded hole is coaxially formed between the outer diameter of the nut and a flange, a flanging riveting inner hole is coaxially formed in a flanging riveting portion and communicated with the inner threaded hole, and the inner threaded hole is communicated with the flange. A material clamping groove is formed in the vertical included angle position of the flange and the flanging riveting position in an inward concave mode, the riveting plate is provided with a pre-opened plate hole allowing the flanging riveting position to stretch into, after the nut body and the riveting plate are stamped and shaped through stamping equipment, plate plastic deformation is formed on the peripheral wall of the pre-opened plate hole of the riveting plate, and the material clamping groove is filled with the plate plastic deformation in a riveting mode. The flanging riveting part forms flanging plastic deformation, and the flanging plastic deformation and the flange form clamping of the riveting plate. According to the utility model, the high-strength connection between the nut body and the riveting plate is realized through the plastic deformation of the flanging, the clamping effect of the flange on the riveting plate and the piercing effect of the anti-rotating teeth.

Description

TECHNICAL FIELD

[0001] The utility model relates to nut technical field, concretely relates to a structure of flanging rivet nut. BACKGROUND

[0002] In the existing connecting piece technology, the connection between the nut and the plate usually relies on welding, threaded connection or other mechanical fixing methods. However, these methods have some shortcomings in certain application scenarios. For example, welding may damage the original surface of the plate, affecting its aesthetic appearance and corrosion resistance; threaded connection requires pre-punching and tapping on the plate, increasing the processing cost and complexity. In addition, the traditional connection method may not have sufficient connection strength when bearing shear force or torque, which may easily lead to loosening or failure.

[0003] In order to solve the above problems, the rivet nut as a new type of connection method emerges as the times require. The rivet nut is pressed by a stamping device to press the nut body and the plate (riveted plate) together, forming a firm connection. However, the existing rivet nut structure still needs to be improved in some aspects. For example, the connection strength between the nut and the plate is not stable enough during the riveting process of some rivet nuts, which is easily affected by external factors and loosens. In addition, some rivet nuts have high requirements for equipment and process during manufacturing and installation, increasing the production cost and difficulty. SUMMARY

[0004] The utility model provides a new type of flanging rivet nut structure to improve the connection strength between the nut and the plate, simplify the manufacturing and installation process, reduce the production cost, and meet the needs of various application scenarios.

[0005] To solve the above technical problems, the utility model adopts the following technical scheme:

[0006] A flanging rivet nut structure, comprising a nut body and a riveted plate that cooperates with the nut body, the nut body comprising a nut outer diameter, a flange and a flanging riveting part arranged coaxially, an internal thread hole is arranged coaxially between the nut outer diameter and the flange, a flanging riveting inner hole is formed coaxially in the flanging riveting part, the flanging riveting inner hole is communicated with the internal thread hole, a clamping groove is arranged in the flange and the flanging riveting part at a perpendicular angle, the riveted plate is provided with a pre-opened plate hole that allows the flanging riveting part to extend into, after the nut body and the riveted plate are shaped by a stamping device, the pre-opened plate hole of the riveted plate forms a plastic deformation of the plate, the plastic deformation of the plate fills the clamping groove, the flanging riveting part forms a flanging plastic deformation, and the flanging plastic deformation and the flange form a clamping of the riveted plate.

[0007] Further, the jamming groove is provided with anti-rotation teeth which are uniformly distributed along the circumference of the flanged riveting part, and the anti-rotation teeth are punched into the riveting plate after the nut body and the riveting plate are punched and shaped by the stamping equipment.

[0008] Further, the stamping equipment comprises a bottom die and a punch, the center of the bottom die is provided with a bottom die positioning hole which matches the outer diameter of the nut, and the center of the punch plane of the punch is provided with a punch flange part which is used for extruding and forming plastic deformation of the inner hole of the flanged riveting part, the punch flange part is an inverted circular truncated cone structure, the side of the circular truncated cone is formed with a gradually narrowing flange arc from top to bottom, and the punch plane cooperates with the bottom die plane to keep the riveting plate flat when the riveting plate is shaped under pressure.

[0009] Further, the inner hole of the flanged riveting part is plastically deformed into the flange plastic deformation along the flange arc of the punch flange part under the impact of the impact pressure when the stamping equipment works.

[0010] Further, the thickness of the flanged riveting part is thicker than that of the riveting plate.

[0011] Further, the riveting plate is a metal plate.

[0012] Compared with the prior art, the utility model has the following beneficial effects:

[0013] The utility model realizes high-strength connection between the nut body and the riveting plate through the flange plastic deformation and the clamping effect of the flange on the riveting plate and the punching effect of the anti-rotation teeth. The utility model does not need to pre-punch or tap the riveting plate, but only needs to place the nut body on the bottom die and then place the riveting plate on the nut body to perform the press riveting operation, so that the manufacturing process is simplified. The utility model adopts the stamping equipment to perform the press riveting operation, and has the advantages of high production efficiency and low cost. The utility model is suitable for connection requirements of various metal plates, and is especially suitable for occasions which need high-strength connection. BRIEF DESCRIPTION OF DRAWINGS

[0014] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or the prior art description, and obviously, the drawings in the following description are only some embodiments of the utility model, and those skilled in the art can also obtain other drawings according to these drawings without paying creative labor.

[0015] Figure 1 It is a structural schematic view of the nut body of the utility model;

[0016] Figure 2 It is a three-dimensional structural schematic view of the nut body of the utility model;

[0017] Figure 3 Figure 1 is a structural schematic view of a nut body and a metal plate according to the present application;

[0018] Figure 4 Figure 2 is a structural schematic view of a riveting structure of the nut body and the metal plate according to the present application. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present application will be clearly and completely described below. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of the present application.

[0020] In the description of the present application, it should be understood that the terms "upper", "lower", "front", "back", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only used to facilitate the description of the present application and simplify the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.

[0021] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connecting", "fixing" and the like should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrated; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements. 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.

[0022] In the present application, unless otherwise explicitly specified and limited, the first feature "on" or "under" the second feature can be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature "above", "over" and "on" the second feature can be that the first feature is directly above or obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "under" and "under" the second feature can be that the first feature is directly below or obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0023] As Figures 1-4As shown, the utility model relates to a kind of flanging rivet nut structure, which is suitable for the occasion that nut is firmly fixed on metal plate, such as automobile manufacturing, electronic equipment assembly and mechanical manufacturing etc.Field.The following is the detailed description of the specific embodiment of the utility model.

[0024] The utility model specifically includes the following components:

[0025] Nut body: the nut body is the main component of the utility model, including integrally coaxially arranged nut outer diameter 3, flange 5 and flanging riveting portion 6.Nut outer diameter 3 is used to cooperate with bolt or other fasteners, and flange 5 provides a wide contact surface for increasing the contact area between nut and riveting plate and improving the stability of connection.Flanging riveting portion 6 is the key part of the utility model to realize rivet connection.

[0026] Internal thread hole 4: internal thread hole 4 is coaxially arranged between nut outer diameter 3 and flange 5, and is used to cooperate with bolt or other fasteners with external thread.

[0027] Flanging riveting inner hole 7: flanging riveting inner hole 7 is coaxially formed in flanging riveting portion 6 and communicates with internal thread hole 4.In the riveting process, flanging riveting inner hole 7 will be plastically deformed to form flanging plastic deformation 15.

[0028] Clamping groove 1 and anti-rotation tooth 2: clamping groove 1 is concavely arranged at the vertical included angle of flange 5 and flanging riveting portion 6, and is used to accommodate the plastic deformation of riveting plate during riveting process.Anti-rotation tooth 2 is evenly distributed along the circumference of flanging riveting portion 6, and is used to penetrate into riveting plate after riveting to prevent the nut body from rotating relative to the riveting plate.

[0029] Riveting plate 10: riveting plate 10 is a metal plate, and a pre-opened plate hole is arranged on the metal plate to allow flanging riveting portion 6 to extend into.In the riveting process, the peripheral wall of the pre-opened plate hole will be plastically deformed to fill clamping groove 1 and cooperate with anti-rotation tooth 2.

[0030] II. Working principle

[0031] Punching equipment setting: the punching equipment includes bottom die 13 and punch 11.The center position of bottom die 13 is provided with bottom die positioning hole 17 matched with the size of nut outer diameter 3, for positioning the nut body.The center position of punch flat surface 14 of punch 11 is provided with punch flanging part 12, and punch flanging part 12 is inverted circular table structure, and the side part thereof forms gradually narrowing flanging arc from top to bottom.

[0032] The press riveting process: the nut body is placed in the bottom die positioning hole 17, and then the riveting plate 10 is placed on the nut body, and the flange riveting portion 6 is inserted into the pre-opened plate hole. Then, the stamping equipment is started, the punch 11 moves downward, the punch flange part 12 is in contact with the flange riveting inner hole 7 and pressure is applied. Under the action of the pressure, the flange riveting inner hole 7 plastically deforms along the flange arc of the punch flange part 12 to form the flange plastic deformation 15. At the same time, the pre-opened plate hole wall of the riveting plate also plastically deforms 16 to fill the clamping groove 1 and cooperate with the anti-rotation tooth 2.

[0033] The connection effect: after the press riveting is completed, the flange plastic deformation 15 and the flange 5 jointly form a clamping action on the riveting plate 10, and the firm connection between the nut body and the riveting plate is ensured. The anti-rotation tooth 2 is inserted into the riveting plate, and further prevents the nut body from rotating relative to the riveting plate.

[0034] The flange press riveting nut product of the utility model can be produced and manufactured by using stainless steel 304, stainless steel 316, carbon steel, copper, aluminum alloy and other raw materials according to different requirements.

[0035] The utility model discloses a flange press riveting nut product can be produced and manufactured by using stainless steel 304, stainless steel 316, carbon steel, copper, aluminum alloy and other raw materials according to different requirements.

[0036] The utility model discloses a flange press riveting nut product can be produced and manufactured by using stainless steel 304, stainless steel 316, carbon steel, copper, aluminum alloy and other raw materials according be different requirements.

[0037] The above only is the preferred embodiment of the utility model, and does not limit the utility model, and any modification, equivalent replacement, improvement etc. that are made within the spirit and principle of the utility model should be included in the protection scope of the utility model.

[0038] Furthermore, it should be understood that although the specification is described in terms of embodiments, the specification is not to be limited to only these described embodiments. The specification is intended to include each individual embodiment as a separate embodiment as well as any combination of individual embodiments.

Claims

1. A clinch nut structure, characterized by, The nut body includes a nut outer diameter, a flange and a flange riveting part arranged coaxially, an internally threaded hole is arranged coaxially between the nut outer diameter and the flange, the flange riveting part is coaxially formed with a flange riveting inner hole, the flange riveting inner hole is communicated with the internally threaded hole, a clamping groove is arranged in the flange at a vertical angle with the flange riveting part, the riveting plate is provided with a pre-opened plate hole allowing the flange riveting part to extend into, after the nut body and the riveting plate are shaped by a stamping device, the pre-opened plate hole of the riveting plate is formed with a plate plastic deformation, the plate plastic deformation is filled in the clamping groove, the flange riveting part is formed with a flange plastic deformation, and the flange plastic deformation and the flange are formed to clamp the riveting plate.

2. A flanged rivet nut structure according to claim 1, wherein The clamping groove is provided with anti-rotation teeth uniformly distributed along the circumference of the flange riveting part, and the anti-rotation teeth are penetrated into the riveting plate after the nut body and the riveting plate are shaped by the stamping device.

3. A flanged rivet nut structure according to claim 2, wherein The stamping device includes a bottom die and a punch, a bottom die positioning hole matched with the size of the nut outer diameter is arranged at the center of the bottom die, and a punch flange part for extruding the flange riveting inner hole to form plastic deformation is arranged at the center of the punch plane of the punch, the punch flange part is an inverted circular truncated cone structure, the side of the circular truncated cone is formed with a flange circular arc gradually narrowing from top to bottom, and the punch plane cooperates with the bottom die plane to keep the riveting plate flat when the riveting plate is shaped under pressure.

4. A flanged riv / nut structure according to claim 3, wherein When the stamping device works, the flange riveting inner hole is plastically deformed into the flange plastic deformation along the flange circular arc of the punch flange part under the impact of pressure.

5. A flanged riv / nut structure according to claim 4, wherein The thickness of the flange riveting part is greater than the thickness of the riveting plate.

6. A flanged riv / nut structure according to claim 5, wherein The riveting plate is a metal plate.

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