Pressing rivet nut

Abstract

The utility model relates to a pressing rivet nut which comprises a nut column, an extrusion boss is arranged on the nut column, a containing inclined face is arranged on the nut column, the containing inclined face inclines in the direction that the closer the containing inclined face is to the extrusion boss, the closer the containing inclined face is to the axis of the nut column, and an inclined groove used for containing a deformation object is formed between the containing inclined face and the extrusion boss. The deformed object is contained in the inclined groove, so that the gap between the containing inclined face and the preset hole can be filled with the deformed object, the contact area between the deformed object and the containing inclined face is increased, connection between the pressing rivet nut and the thin plate is more stable, and even if the pressing rivet nut tends to be loosened and separated from the thin plate, the containing inclined face and the deformed object are pressed more and more tightly; and the accommodating inclined surface plays a self-locking role.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of nuts, in particular to a press-in nut. BACKGROUND

[0002] The press-in nut is a kind of nut applied to thin plate or sheet metal, which has a guide groove and an extrusion boss at one end. The principle is that the extrusion boss is pressed into the pre-holed position of the sheet metal, the hole diameter of the pre-holed position is slightly smaller than the extrusion boss of the press-in nut, and the extrusion boss of the press-in nut is extruded into the plate by pressure to make the periphery of the pre-holed position plastically deform, and the deformed material is extruded into the guide groove, thereby producing a locking effect.

[0003] The guide groove in the existing press-in nut is mostly a ring groove opened in the circumference of the press-in nut, and the deformed material of the periphery of the pre-holed position is extruded into the ring groove, but the shape and size of the deformed material may not be adapted to the shape and size of the ring groove, and there may be a gap between the deformed material and the ring groove. After a long time of use, due to external vibration and other factors, the deformed material will be extruded again, resulting in a gap between the deformed material and the side wall of the guide groove or even a larger gap, and the press-in nut will be loose, which affects the connection stability of the press-in nut. CONTENT OF THE INVENTION

[0004] In order to solve the technical problem of general connection stability of the press-in nut in the prior art, the present application provides a press-in nut.

[0005] The present application provides a press-in nut, which adopts the following technical solution:

[0006] The press-in nut comprises a nut column, an extrusion boss is arranged on the nut column, a containing inclined surface is arranged on the nut column, the containing inclined surface is inclined along the direction of being closer to the axis of the nut column as being closer to the extrusion boss, and an inclined groove for containing deformed material is formed between the containing inclined surface and the extrusion boss.

[0007] By adopting the above technical solution, the deformed material is contained in the inclined groove, so that the gap between the containing inclined surface and the pre-holed position can be filled with the deformed material, the contact area of the deformed material and the containing inclined surface is increased, the connection between the press-in nut and the thin plate is more stable, and even if the press-in nut has a tendency to loosen and separate from the thin plate, the containing inclined surface and the deformed material will only be pressed more tightly, and the containing inclined surface plays a self-locking role.

[0008] Optionally, the nut column is in the shape of a circular truncated cone, and the containing inclined surface is the outer peripheral surface of the nut column.

[0009] By adopting the above technical solution, the nut column is in the shape of a circular truncated cone, and the containing inclined surface is the outer peripheral surface of the nut column, which maximizes the size of the containing inclined surface, achieves a better self-locking effect, further improves the connection stability of the press-in nut and the thin plate, and the circular truncated cone structure is simple and convenient to process.

[0010] Optionally, the outer side wall of the extrusion boss is provided with an anti-rotation tooth, and the anti-rotation tooth is used to be embedded into the sheet.

[0011] By adopting the above technical scheme, the anti-rotation tooth is embedded into the sheet during use of the pressure rivet nut, the anti-rotation tooth can increase the torque, and relative rotation between the pressure rivet nut and the sheet is prevented.

[0012] Optionally, the extrusion boss is provided with an anti-rotation edge, and the anti-rotation edge is used to prevent the pressure rivet nut from rotating relative to the sheet.

[0013] By adopting the above technical scheme, instead of a cylinder, the anti-rotation edge is in contact with the deformation object to prevent relative rotation between the pressure rivet nut and the sheet.

[0014] Optionally, the accommodating inclined surface is formed by beveling the outer wall of the nut column, and a plurality of the accommodating inclined surfaces are distributed around the circumference of the nut column.

[0015] By adopting the above technical scheme, the accommodating inclined surface is formed by beveling the outer wall of the nut column, so that the accommodating inclined surface can accommodate the deformation object and has a self-locking effect, and the accommodating inclined surface can also prevent relative rotation between the pressure rivet nut and the sheet. The contact surface between the deformation object and the accommodating inclined surface is large, and the anti-rotation effect is good. Furthermore, a plurality of the accommodating inclined surfaces are circumferentially arranged around the nut column, which further improves the fastening performance.

[0016] Optionally, the outer circumferential surface of the nut column is provided with a protrusion.

[0017] By adopting the above technical scheme, the protrusion can prevent relative rotation between the pressure rivet nut and the sheet, and the structure is simple and convenient to process.

[0018] Optionally, a plurality of the protrusions are circumferentially distributed around the nut column.

[0019] By adopting the above technical scheme, the plurality of protrusions can further improve the anti-rotation effect.

[0020] Optionally, the outer circumferential surface of the nut column is provided with an accommodating groove, an inner wall of the accommodating groove is obliquely formed with a guide inclined surface, the guide inclined surface is inclined in a direction away from the extrusion boss and closer to the axis of the nut column, the inner wall of the accommodating groove includes a groove side wall, the groove side wall extends in the radial direction, and the guide inclined surface is closer to the extrusion boss than the groove side wall.

[0021] By adopting the above technical scheme, the guide inclined surface plays a guiding role in the deformation direction of the deformation object, so that the deformation object fills the accommodating groove, increases the contact area between the deformation object and the accommodating groove wall, and is blocked by the groove side wall, thereby improving the fastening performance.

[0022] Optionally, a groove is formed on the side wall of the slot, and an inner wall of the groove is located at a position closest to the axis of the nut column.

[0023] By adopting the above technical solution, the groove is formed on the side wall of the slot, and the deformation object is also filled in the groove, so that the side wall of the slot has a hooking effect, and the fastening performance is further improved.

[0024] Optionally, the guide slope extends into the groove.

[0025] By adopting the above technical solution, the length of the guide slope is increased to the maximum extent, the guiding effect of the guide slope is improved, and the situation that the deformation object does not fill the accommodating slot and the groove is avoided as much as possible.

[0026] In summary, the present application has at least one of the following beneficial technical effects:

[0027] 1. The contact area between the deformation object and the accommodating slope is increased, the connection between the press-in nut and the thin plate is more stable, even if the press-in nut has a tendency to loosen and separate from the thin plate, the accommodating slope and the deformation object will only be pressed tighter, and the accommodating slope has a self-locking effect;

[0028] 2. While the accommodating slope can accommodate the deformation object and has a self-locking effect, the accommodating slope can also prevent relative rotation between the press-in nut and the thin plate, the contact surface between the deformation object and the accommodating slope is large, and the anti-rotation effect is good;

[0029] 3. The deformation direction of the deformation object is guided by the guide slope, so that the deformation object fills the accommodating slot, the contact area between the deformation object and the accommodating slot wall is increased, and the deformation object is blocked by the side wall of the slot, and the fastening performance is improved. BRIEF DESCRIPTION OF DRAWINGS

[0030] Figure 1 is a structural schematic diagram of embodiment 1 of the present application.

[0031] Figure 2 is a structural schematic diagram of embodiment 2 of the present application.

[0032] Figure 3 is a structural schematic diagram of embodiment 3 of the present application.

[0033] Figure 4 is a structural schematic diagram of embodiment 4 of the present application.

[0034] Figure 5 is a structural schematic diagram of embodiment 5 of the present application.

[0035] Figure 6 is a structural schematic diagram of embodiment 6 of the present application.

[0036] Figure 7 is a structural schematic diagram of embodiment 7 of the present application. Figure 6Cross-sectional view along A-A.

[0037] Reference numerals: 1, nut post; 2, extrusion boss; 21, anti-rotation tooth; 22, anti-rotation edge; 3, accommodating slope; 4, convex point; 5, nut cap; 6, inclined groove; 7, accommodating groove; 71, guide slope; 72, groove side wall; 721, groove; 722, slope. DETAILED DESCRIPTION

[0038] The following will be described in detail in combination with the accompanying drawings. Figures 1-7 The present application will be further described in detail.

[0039] Embodiment 1

[0040] Embodiment 1 of the present application discloses a press-in nut. Referring to Figure 1 , including nut post 1, extrusion boss 2 and nut cap 5, extrusion boss 2 is integrally formed on the end of nut post 1 close to nut cap 5. Nut post 1 is provided with accommodating slope 3 on the outer circumferential surface, and inclined groove 6 for accommodating deformation is formed between accommodating slope 3 and extrusion boss 2. In this embodiment, nut post 1 is a circular truncated cone, accommodating slope 3 is the outer circumferential surface of nut post 1, and the radial distance of the outer circumferential surface of nut post 1 gradually increases in the direction away from extrusion boss 2.

[0041] Referring to Figure 1 , the radial dimension of extrusion boss 2 is greater than that of the large end of nut post 1, and anti-rotation tooth 21 is integrally formed on the outer circumferential surface of extrusion boss 2, and a plurality of anti-rotation teeth 21 are uniformly distributed around the axis of extrusion boss 2.

[0042] The implementation principle of the press-in nut of embodiment 1 of the present application is that the operator inserts nut post 1 into the pre-holed sheet, and extrusion boss 2 is pressed into the pre-holed position of the sheet by applying axial pressure, and the periphery of the pre-holed sheet is plastically deformed, and the deformation is extruded into inclined groove 6, thereby fastening the sheet and the press-in nut.

[0043] Embodiment 2

[0044] Referring to Figure 2 , different from embodiment 1, the outer wall surface of extrusion boss 2 is provided with anti-rotation edge 22 in this embodiment. In this embodiment, extrusion boss 2 is a composite cylinder connected by curved surface and straight surface, that is, the four edges of the cube are designed as rounded, and anti-rotation edge 22 is the connecting edge between the arc surface and the straight surface. In other embodiments, the radial cross section of extrusion boss 2 can be a closed figure connected by two curved surfaces, such as an olive shape, or the radial cross section of extrusion boss 2 can be an ellipse, as long as the radial cross section of extrusion boss 2 is non-circular.

[0045] Embodiment 3

[0046] Referring toFigure 3 Unlike the embodiment 1, the radial section of the extrusion boss 2 is a regular polygon in this embodiment. In this embodiment, the radial section of the extrusion boss 2 is a hexagon, and in other embodiments, the radial section of the extrusion boss 2 can be a triangle, a square, a pentagon, or an irregular polygon, etc.

[0047] Embodiment 4:

[0048] With reference to Figure 4 Unlike the embodiment 1, the nut column 1 is a cylinder as a whole in this embodiment, and the accommodating bevels 3 are formed by beveling the outer wall of the nut column 1, the accommodating bevels 3 are inclined in the direction of being closer to the axis of the nut column 1 as being closer to the extrusion boss 2, and the accommodating bevels 3 are provided with four, which are uniformly distributed around the circumference of the nut column 1, so that the press-in nut is uniformly stressed and the fastening performance is improved. The extrusion boss 2 is a cylinder. In other embodiments, the accommodating bevels 3 can be provided with three, five, six, etc.

[0049] Embodiment 5:

[0050] With reference to Figure 5 Unlike the embodiment 1, a plurality of protrusions 4 are formed on the outer circumferential surface of the nut column 1 by stamping in this embodiment, and the plurality of protrusions 4 are uniformly distributed around the circumference of the nut column 1. The protrusions 4 are hemispherical, and the radial section size of the nut column 1 at the protrusions 4 is not greater than the radial section size of the large end of the nut column 1, that is, the protrusions 4 will not interfere with the insertion of the nut column 1 into the pre-plated hole of the sheet. In other embodiments, the protruding distance of the protrusions 4 is less than the radius of the protrusions 4, that is, the protrusions 4 are smaller than the hemisphere, and when the press-in nut is used, the protrusions can be in complete contact with the deformation, and the situation that the edges around the protrusions are not filled with the deformation is avoided as much as possible, and the connection stability of the press-in nut and the sheet is improved. The extrusion boss 2 is a cylinder.

[0051] Embodiment 6:

[0052] With reference to Figure 6 On the basis of the embodiment 4, the accommodating grooves 7 are provided on the outer circumferential surface of the nut column 1, extend along the radial direction to the axis of the nut column 1, are located between the adjacent two accommodating bevels 3, and are provided with four, which are uniformly distributed around the outer circumferential surface of the nut column 1.

[0053] With reference to Figure 7 The inner wall of the accommodating groove 7 is inclined to form a guide bevel 71, the guide bevel 71 is inclined in the direction of being closer to the axis of the nut column 1 as being farther away from the extrusion boss 2, the inner wall of the accommodating groove 7 includes a groove side wall 72, the groove side wall 72 extends in the radial direction, the groove side wall 72 is oppositely arranged with the guide bevel 71, and the guide bevel 71 is closer to the extrusion boss 2 than the groove side wall 72.

[0054] With reference toFigure 7 The groove 721 is formed on the side wall 72 of the groove, extends along the axis of the nut column 1 in a direction away from the extrusion boss 2, and the inner wall of the groove 721 is located at the position closest to the axis of the nut column 1, that is, the groove 721 is formed on the position of the side wall 72 of the groove closest to the axis of the nut column 1. The guide inclined surface 71 extends into the groove 721, and the inner wall of the groove 721 is inclined to form an inclined surface 722, which is inclined in a direction away from the extrusion boss 2 and closer to the axis of the nut column 1, and the inclined surface 722 cooperates with the guide inclined surface 71 to guide the deformation object, so that the deformation object can fill the accommodation groove 7 and the groove 721.

[0055] The above are preferred embodiments of the present application, and are not intended to limit the protection scope of the present application, therefore: any equivalent changes made on the structure, shape, principle of the present application should be covered within the protection scope of the present application.

Claims

1. A self-clinching nut, characterized in that: The invention comprises a nut column (1), wherein the nut column (1) is provided with an extrusion boss (2), and the nut column (1) is provided with a receiving inclined surface (3), wherein the receiving inclined surface (3) is inclined in a direction that the closer it is to the extrusion boss (2), the closer it is to the axis of the nut column (1), and an inclined groove (6) for receiving a deformed object is formed between the receiving inclined surface (3) and the extrusion boss (2), and an anti-rotation edge (22) is formed on the extrusion boss (2), and the anti-rotation edge (22) is used to prevent the rivet nut from rotating relative to the thin plate.

2. The self-clinching nut according to claim 1, wherein: The nut column (1) is in a truncated cone shape, and the accommodating inclined surface (3) is the outer peripheral surface of the nut column (1).

3. The self-clinching nut according to claim 2, wherein: Anti-rotation teeth (21) are provided on the outer side wall of the extrusion boss (2), and the anti-rotation teeth (21) are used to be embedded in the thin plate.

4. The self-clinching nut according to claim 1, wherein: The accommodating inclined surface (3) is formed by beveling the outer wall of the nut column (1), and a plurality of the accommodating inclined surfaces (3) are provided, and the plurality of the accommodating inclined surfaces (3) are distributed around the circumference of the nut column (1).

5. The self-clinching nut according to claim 2, characterized in that: A convex point (4) is provided on the outer peripheral surface of the nut column (1).

6. The self-clinching nut according to claim 5, characterized in that: There are a plurality of protrusions (4), and the plurality of protrusions (4) are distributed around the circumference of the nut column (1).

7. The self-clinching nut according to claim 1, wherein: An accommodating groove (7) is provided on the outer peripheral surface of the nut column (1), and a guiding inclined surface (71) is formed on the inner wall of the accommodating groove (7), and the guiding inclined surface (71) is inclined in a direction that is farther away from the extrusion boss (2) and closer to the axis of the nut column (1). The inner wall of the accommodating groove (7) includes a groove side wall (72), and the groove side wall (72) extends in the radial direction. The guiding inclined surface (71) is closer to the extrusion boss (2) than the groove side wall (72).

8. The self-clinching nut according to claim 7, characterized in that: A groove (721) is provided on the groove side wall (72), and the inner wall of the groove (721) is located closest to the axis of the nut column (1).

9. The self-clinching nut according to claim 8, characterized in that: The guiding slope (71) extends into the groove (721).

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