CN217502253U - Multifunctional nut - Google Patents

Abstract

The utility model discloses a multifunctional nut, which comprises a head part, a screw part and a convex navel part which are sequentially and integrally formed; the head is provided with an upper counter bore, and the upper counter bore is a polygonal counter bore; and the lower end surface of the head part is also convexly provided with a sealing convex part; the screw rod part is provided with an internal thread hole and an external thread; a lower counter bore is arranged in the convex umbilical part; the peripheral wall of the lower counter bore is bent inwards, and a gasket mounting groove is formed in the counter bore so as to tightly press the sealing gasket in the gasket mounting groove; or the peripheral wall of the sinking hole is bent outwards to form a buckling and abutting part outside the sinking hole so as to buckle the metal plate. The multifunctional nut can bear larger tightening force, is not easy to be damaged by screwing and is easy to process; the self-tapping waterproof gasket has the advantages of good self-tapping capability, labor saving, good sealing and waterproof performance, nylon gaskets can be embedded in the gasket, riveting can be performed, and fastening capability is improved.

Description

Multifunctional nut

Technical Field

The utility model belongs to the technical field of the fastener is made, concretely relates to multifunctional nut for car.

Background

Fasteners are a very widely used class of mechanical parts for fastening connections. A wide variety of fasteners are found on a variety of machines, equipment, vehicles, boats, railways, bridges, buildings, structures, tools, instruments, meters, supplies, and the like.

Self-tapping screws are threaded fasteners that self-tap mating internal threads into preformed holes of metallic or non-metallic materials. Generally, the external thread is self-tapping and has a self-tapping function, and the external thread does not need to be matched with a nut for use. It is often used for the connection between thin metal plates (steel plates, saw plates, etc.).

At present, self-tapping fasteners on the market are mostly screws, and the sealing property is poor; the top is a cross groove or a straight groove, the requirement on the position degree is high when the groove is machined, the machining is difficult, the cross groove is difficult to bear large screwing force, and the groove is easy to screw down; the fastener has single function and narrow application range.

SUMMERY OF THE UTILITY MODEL

In order to solve the problems in the prior art, the utility model provides a multifunctional nut which can bear large screwing force, is not easy to be screwed out and is easy to be processed; the self-tapping waterproof gasket has the advantages of good self-tapping capability, labor saving, good sealing and waterproof performance, nylon gaskets can be embedded in the gasket, riveting can be performed, and fastening capability is improved.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a multifunctional nut comprises a head part, a screw rod part and a convex navel part which are sequentially and integrally formed; the head is provided with an upper counter bore, and the upper counter bore is a polygonal counter bore; the lower end surface of the head part is also convexly provided with a sealing convex part;

the screw rod part is provided with an internal threaded hole and an external thread;

a lower counter bore is arranged in the convex umbilical part; the peripheral wall of the lower counter bore is bent inwards, and a gasket mounting groove is formed in the counter bore so as to tightly press a sealing gasket in the gasket mounting groove; or the peripheral wall of the lower counter bore is bent outwards to form a buckling and abutting part outside the lower counter bore so as to buckle the metal plate.

In the multifunctional nut, the sealing convex part is in a triangular pyramid shape with a wide top and a narrow bottom.

According to the multifunctional nut, the external thread of the screw rod part is a triangular thread.

The technical scheme provided by the above has the following beneficial effects:

firstly, the utility model discloses the panel beating is pricked completely to the sealed boss of multi-functional nut, plays sealed waterproof effect. And the sealing gasket is pressed in the gasket mounting groove by inward bending of the peripheral wall of the lower counter bore, so that the sealing and waterproof effects are further improved by the sealing gasket. When the anti-rotation sealing washer is matched with the bolt, the anti-rotation effect can be achieved to a certain extent.

Secondly, the utility model discloses the triangle tooth screw thread and the panel beating interference fit of multi-functional nut screw section can provide sufficient pull-off intensity, play the fastening. And buckle outwards in order to form to detain the portion of support and withhold the panel beating through the perisporium of counter bore down, further promote the utility model discloses multi-functional nut draws and takes off intensity, strengthens fastening ability.

Thirdly, the utility model discloses the last counter bore of multi-functional nut head adopts the polygon counter bore, compares the cross recess inner face atress of prior art's cross recess counter bore, and a plurality of inner face atress of polygon counter bore are even, can bear bigger tightening torque, and are difficult to twist badly. In addition, in the aspect of processing, the problems that the requirement on the position degree is high in the processing of the counter bore of the cross groove in the prior art, and the self-tapping hole is inclined due to poor position degree can be solved.

Fourthly, the utility model discloses the protruding sealed convex part of establishing of terminal surface under the multi-functional nut head can strengthen the sealing capacity behind multi-functional nut and the panel beating laminating.

Drawings

The accompanying drawings, which are described herein, serve to provide a further understanding of the invention and constitute a part of this specification, and the exemplary embodiments and descriptions thereof are provided for explaining the invention without unduly limiting it. In the drawings:

fig. 1 is a schematic perspective view of the multifunctional nut of the present invention;

fig. 2 is a schematic sectional structural view of the multifunctional nut of the present invention;

fig. 3 is a schematic bottom view of the multifunctional nut of the present invention;

fig. 4 is a schematic perspective view of the multifunctional nut of the present invention before the nylon washer is embedded;

FIG. 5 is a schematic cross-sectional view of the process of embedding the nylon washer in the multifunctional nut of the present invention;

FIG. 6 is a schematic cross-sectional view of the multi-functional nut inlaid with a nylon washer according to the present invention;

fig. 7 is a schematic view of the structure of the multifunctional nut embedded with a nylon washer of the present invention in partial cross section in cooperation with a screw;

fig. 8 is a schematic view of the three-dimensional structure of the multifunctional nut before riveting;

fig. 9 is a schematic cross-sectional view of the multifunctional nut in a self-tapping state;

fig. 10 is a schematic cross-sectional view of the multi-function nut riveting of the present invention;

fig. 11 is a schematic view of the cross-sectional structure of the multifunctional nut after riveting.

Detailed Description

In order to make the technical problems, technical solutions and advantageous effects of the present invention to be solved clearer and more obvious, the present invention is further explained in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.

In the claims, the specification and the drawings, unless otherwise expressly limited, the terms "first," "second," or "third," etc. are used for distinguishing between different elements and not for describing a particular sequence.

In the claims, the specification and the drawings, unless otherwise expressly limited, to the extent that directional terms such as "center", "lateral", "longitudinal", "horizontal", "vertical", "top", "bottom", "inner", "outer", "upper", "lower", "front", "rear", "left", "right", "clockwise", "counterclockwise" and the like are used, the positional or orientational relationships illustrated in the drawings are based on the positional and orientational relationships illustrated in the drawings and are merely for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the device or element so referred to must have a particular orientation or be constructed and operated in a particular orientation, and therefore should not be construed as limiting the scope of the present invention in any way.

In the claims, the description and the drawings of the present application, unless otherwise specifically limited, the terms "fixedly connected" or "fixedly connected" should be understood in a broad sense, i.e., any connection mode without a displacement relationship or a relative rotation relationship between the two, i.e., including non-detachable fixed connection, integrated connection and fixed connection through other devices or elements.

In the claims, the specification and the drawings of the present application, the terms "including", "comprising" and variations thereof, if used, are intended to be inclusive and not limiting.

Referring now to fig. 1 to 11, the multifunctional nut of the present invention is described, which comprises a head 100, a screw part 200 and a umbilical part 300 integrally formed in sequence.

The utility model discloses head 100, head 100 is equipped with counter bore 110, it is the polygon counter bore to go up counter bore 110. Preferably, the upper counterbore 110 is a hexagonal counterbore, and may be a quadrangular counterbore or an octagonal counterbore. In the embodiment, the upper counter bore 110 is a hexagonal counter bore with 15-19 mm of opposite sides. The upper counter bore 110 is a hexagonal counter bore, and compared with the stress on the inner face of the cross groove counter bore in the prior art, the six inner faces of the hexagonal counter bore are uniformly stressed, can bear larger screwing torque, and are not easy to screw down. In addition, in the aspect of processing, the problems that the requirement on the position degree is high in the processing of the counter bore of the cross groove in the prior art, and the self-tapping hole is inclined due to poor position degree can be solved. The outer shape of the head 100 includes, but is not limited to, circular, quadrangular, hexagonal, etc. In this embodiment, the head 100 is circular, and the outer diameter of the circular head is phi 31mm to 32 mm. The utility model discloses the lower terminal surface of head 100 is protruding still to be equipped with sealed convex part 400, strengthens the utility model discloses sealing capacity behind multi-functional nut and the panel beating laminating. Further, sealed convex part 400 is the narrow triangular pyramid form about wide in order to further promote the utility model discloses sealing capacity behind multi-functional nut and the panel beating laminating. In this embodiment, the sealing protrusion 400 has a circular ring shape, the maximum inner diameter of the circular ring-shaped sealing protrusion 400 is 12 to 14mm, and the height of the sealing protrusion 400 is 0.8 mm.

The utility model discloses screw rod portion 200, be equipped with internal thread hole 210 in screw rod portion 200, communicate on this internal thread hole 210 the last counter bore 110 of head 100, this screw hole 210 intercommunication down the counter bore 310 of protruding gluey portion 300 to form the last counter bore 110, internal thread hole 210 and the counter bore 310 that link up from top to bottom according to the preface. The screw portion 200 is further provided with an external thread 220. Specifically, the external thread 220 of the screw portion 200 is a triangular thread. In this embodiment, the length of the screw portion 200 is 8-9 mm; the external thread 220 is an M24 triangular thread, and can also be an M18 triangular thread or an M16 triangular thread.

Please refer to fig. 8 to fig. 11 self-tapping riveting process, it is right to the utility model discloses downward application of force F1 of multi-functional nut, multi-functional nut passes through panel beating 700 through the triangle tooth screw tapping of screw section 200, and the lower terminal surface of until circular head pastes tight panel beating 700, and sealed boss 400 pierces panel beating 700 completely this moment, plays sealed waterproof effect. And the triangular thread of the screw rod part 200 is in interference fit with the metal plate 700 to generate an interference phenomenon C, so that a fastening effect is achieved.

The utility model discloses protruding navel portion 300, protruding navel portion 300 passes through the chamfer transition with screw rod portion 200 and links to each other. The utility model discloses be equipped with lower counter bore 310 in navel portion 300, in this embodiment, the counter bore 310 degree of depth is 4-7mm down. The peripheral wall of the lower counterbore 310 of the present invention is bent inward (the bending direction is shown as direction a in fig. 5), and a gasket mounting groove 311 is formed in the lower counterbore 310; alternatively, the peripheral wall of the lower counter bore 310 of the present invention is bent outward (the bending direction is shown as B direction in fig. 10), and a buckling portion 312 is formed outside the lower counter bore 310.

Please combine fig. 5 to fig. 7 to show, work as the utility model discloses down the perisporium of counter bore 310 inwards buckle down and form packing ring mounting groove 311 in counter bore 310 when, can compress tightly seal ring 500 in this packing ring mounting groove 311, inlay the back the utility model discloses after multi-functional nut and bolt 600 cooperate, bolt 600 self tapping passes through seal ring 500, bolt 600's external screw thread and seal ring 500 interference fit, and screw thread department produces interference phenomenon D, and radial friction provides sufficient moment of torsion, and the shearing force between the axial thread provides sufficient pull-off intensity. The sealing gasket 500 also serves to seal against water. In this embodiment, the sealing washer 500 is a nylon washer.

When the utility model discloses the perisporium of counter bore 310 outwards buckles and becomes to detain when supporting portion 312 outside counter bore 310 down, detains supporting portion 312 and withholds panel beating 700, promotes the utility model discloses multi-functional nut draws and takes off intensity, further strengthens fastening ability.

While the foregoing description shows and describes the preferred embodiments of the present invention, it is to be understood that the invention is not limited to the forms disclosed herein, but is not intended to be exhaustive or to exclude other embodiments and may be used in various other combinations, modifications, and environments and is capable of changes within the scope of the inventive concept as expressed herein, commensurate with the above teachings, or the skill or knowledge of the relevant art. But that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the invention, which is to be limited only by the claims appended hereto.

Claims (3)

1. A multifunctional nut is characterized by comprising a head part (100), a screw part (200) and a convex umbilical part (300) which are sequentially and integrally formed; wherein the content of the first and second substances,

the head part (100) is provided with an upper counter bore (110), and the upper counter bore (110) is a polygonal counter bore; a sealing convex part (400) is also convexly arranged on the lower end surface of the head part (100);

the screw rod part (200) is provided with an internal thread hole (210), and the screw rod part (200) is also provided with an external thread (220); the convex umbilical part (300) is internally provided with a lower counter bore (310); the peripheral wall of the lower counter bore (310) is bent inwards, and a gasket mounting groove (311) is formed in the lower counter bore (310) so as to press the sealing gasket (500) in the gasket mounting groove (311); or the peripheral wall of the lower counter bore (310) is bent outwards, and a buckling part (312) is formed outside the lower counter bore (310) to buckle the metal plate (700).

2. The multifunctional nut as claimed in claim 1, wherein the sealing protrusion (400) has a triangular pyramid shape with a wide top and a narrow bottom.

3. The multifunctional nut as claimed in claim 1 or 2, wherein the external thread (220) of the screw part (200) is a triangular thread.

Images