CN213541042U - High-tightness and high-strength nut fastener - Google Patents

Abstract

The utility model discloses a high leakproofness high strength nut fastener belongs to the high strength nut field, including screw rod body, nut body, screw thread bucket, rubber sleeve, polygonal groove, push down spring, holding down plate, up end ratchet, lower terminal surface ratchet, rubber seal. The utility model discloses a screw rod body and nut body fasten, utilize rubber seal to seal fastened object surface to screw rod body and nut body, utilize the screw thread bucket to revolve and to twist and drive rubber sleeve extrusion and nut body upper surface on the screw rod body, and then seal the gap of screw thread contact between nut body and screw rod body, cooperate through the lower terminal surface ratchet of the up end ratchet on the holding down plate in the multilateral inslot in the screw thread bucket and screw rod body upper end, and then prevented reversing of screw thread bucket, it takes off to have prevented that the screw thread bucket from taking off, it takes off to hinder nut body pine simultaneously.

Description

High-tightness and high-strength nut fastener

Technical Field

The utility model relates to a high strength nut field, especially a high leakproofness high strength nut fastener.

Background

The high-strength nut fastener is a mechanical part which is used for fastening and connecting and has wide application range, has wide application industry, can see various fasteners in the industries of energy, electronics, electrical appliances, machinery, chemical engineering, metallurgy, dies, hydraulic pressure and the like, is a mechanical basic part which has the widest application range, and has the characteristics of various types and specifications, different performance purposes and extremely high standardization, serialization and universalization degrees. Thus, one type of fastener that has a national standard is also referred to as a standard fastener, or simply a standard.

When fastening equipment or other devices, the existing high-strength nut fastener has a gap between the nut and the screw rod, so that water and air are easily led to enter the gap, the nut is easily led to rust, the nut cannot be unscrewed, the hole cannot be completely sealed by the existing high-strength fastener at the mounting hole part of the fastener, the joint cannot be sealed, the sealing and isolating effect cannot be achieved, and therefore the high-sealing high-strength nut fastener for solving the problems is needed.

Disclosure of Invention

The utility model aims at solving the problem of proposing in the background art, designed a high leakproofness high strength nut fastener.

The technical proposal of the utility model is that the high-tightness and high-strength nut fastener comprises a screw rod body, a nut body, a thread barrel, a rubber sleeve, a polygonal groove, a downward pressing spring, a lower pressing plate, an upper end surface ratchet, a lower end surface ratchet and a rubber sealing ring, the nut body is engaged and screwed with the screw rod body, the threaded barrel is screwed and sleeved at the upper end of the screw rod body, the rubber sleeve is sleeved outside the threaded barrel, the polygonal groove is fixedly arranged in the threaded barrel, the upper end of the lower pressure spring is fixedly arranged on the upper surface in the polygonal groove, the lower pressing plate is slidably embedded in the polygonal groove, the upper surface of the lower pressing plate is connected with the lower end of the lower pressing spring, the ratchet on the upper end surface is arranged on the lower surface of the lower pressing plate, the lower end face ratchet is arranged on the upper end face of the screw rod part of the screw rod body, and the two rubber sealing rings are sleeved on the screw rod body and are positioned below the nut body.

Furthermore, the outer surface of the threaded barrel is of a hexagonal barrel-shaped structure, the threaded barrel is provided with a fixed thread, the fixed thread is arranged at the lower inner part of the threaded barrel and is positioned below the polygonal groove, and the fixed thread is meshed with the thread on the screw rod body.

Further, the rubber sleeve is a rubber structure which is adhered to the outer surface of the threaded barrel, and the lower part of the lower surface of the threaded barrel is connected with the lower part of the rubber sleeve.

Furthermore, the lower pressing plate is of a polygonal block-shaped structure corresponding to the shape of the polygonal groove.

Furthermore, the upper end surface ratchets are annularly distributed ratchets on the lower end surface of the lower pressing plate, and the lower end surface ratchets are annularly distributed ratchets on the upper end surface of the screw body and meshed with the upper end surface ratchets.

Has the advantages that:

the fastener is fastened by the screw rod body and the nut body through the structural design, the surface of an object to be fastened is sealed by the screw rod body and the nut body through the rubber sealing rings, the threaded barrel is screwed on the screw rod body to drive the rubber sleeve to extrude the upper surface of the nut body, and further a gap in threaded contact between the nut body and the screw rod body is sealed, so that the problems that the conventional fastener is easy to rust between the screw rod and the nut and poor in sealing performance are solved;

the upper end face ratchet on the lower pressing plate in the polygonal groove in the threaded barrel is matched with the lower end face ratchet at the upper end of the screw body, so that the reverse rotation of the threaded barrel is prevented, the loosening of the nut body is prevented, and the problem that the existing nut is easily loosened after being subjected to mechanical vibration when in use is solved.

Drawings

Fig. 1 is a schematic structural view of the high-sealing and high-strength nut fastener of the present invention;

FIG. 2 is a cross sectional view of the threaded barrel of the present invention;

fig. 3 is a schematic bottom view of the lower platen of the present invention;

fig. 4 is a schematic top view of the screw body of the present invention;

fig. 5 is a schematic cross-sectional view of fig. 3 according to the present invention;

fig. 6 is a schematic structural view of the upper end surface ratchet and the lower end surface ratchet in a cross-sectional state of the present invention.

In the figure, 1, a screw body; 2. a nut body; 3. a threaded barrel; 4. a rubber sleeve; 5. a polygonal groove; 6. pressing down the spring; 7. a lower pressing plate; 8. the upper end surface is provided with a ratchet; 9. lower end surface ratchets; 10. a rubber seal ring; 11. and (5) fixing the threads.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "upper/lower end", "inner", "outer", "front end", "rear end", "both ends", "one end", "the other end" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless explicitly stated or limited otherwise, the terms "mounted," "disposed/sleeved," "connected," and the like are to be construed broadly, e.g., "connected," which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1-6, the present invention provides a technical solution: a high-tightness and high-strength nut fastener comprises a screw rod body 1, a nut body 2, a thread barrel 3, a rubber sleeve 4 and a polygonal groove 5, the screw comprises a lower pressing spring 6, a lower pressing plate 7, an upper end face ratchet 8, a lower end face ratchet 9 and rubber sealing rings 10, wherein the nut body 2 is meshed and screwed with the screw body 1, the threaded barrel 3 is screwed and sleeved at the upper end of the screw body 1, a rubber sleeve 4 is sleeved outside the threaded barrel 3, a polygonal groove 5 is fixedly formed in the threaded barrel 3, the upper end of the lower pressing spring 6 is fixedly arranged on the upper surface in the polygonal groove 5, the lower pressing plate 7 is slidably embedded in the polygonal groove 5, the upper surface of the lower pressing plate is connected with the lower end of the lower pressing spring 6, the upper end face ratchet 8 is formed in the lower surface of the lower pressing plate 7, the lower end face ratchet 9 is formed in the upper end face of a screw rod part of the screw body 1, and the two rubber sealing rings 10 are sleeved on.

The utility model discloses in, screw thread bucket 3 is the hexagonal tubbiness structure for the surface, is equipped with fixed screw thread 11 on the screw thread bucket 3, and fixed screw thread 11 is opened lower part and is located polygonal groove 5 below in screw thread bucket 3, and the screw thread interlock on fixed screw thread 11 and the screw rod body 1 is convenient for twist screw thread bucket 3 soon through fixed screw thread 11 and on with screw rod body 1.

The utility model discloses in, rubber sleeve 4 is installed in the rubber structure of 3 surfaces of screw thread bucket for bonding, and 3 lower surface below connection rubber sleeve 4 lower parts of screw thread bucket, and then when 3 twist soon of screw thread bucket twist and push down, 4 bottoms of rubber sleeve and 2 upper surfaces of nut body extrude, and then realize sealedly.

The utility model discloses in, holding down plate 7 is the polygon massive structure who corresponds with 5 shapes of polygonal groove, and then holding down plate 7 can not take place to rotate under the restriction of polygonal groove 5.

The utility model discloses in, the ratchet column structure of the cyclic annular distribution of up end ratchet 8 for opening under holding down plate 7 terminal surface, down end ratchet 9 for opening in the cyclic annular distribution of 1 up end of screw rod body with the ratchet column structure of the 8 interlocks of up end ratchet, and then when up end ratchet 8 with down end ratchet 9 interlock, the two can only rotate to a direction, when revolving soon downwards, up end ratchet 8 overcomes the effort that pushes down spring 6 under the effect of end ratchet 9 and rises, and then can not obstruct down end ratchet 9 and rotate, when end ratchet 9 antiport, because down end ratchet 9 with 8 interlocks of up end ratchet, and the occlusal surface is vertical, and then unable reversal.

In this embodiment:

during operation, will fasten the thing fastening through revolving of screw rod body 1 and nut body 2, during the installation, two rubber seal 10 are located respectively and fasten the thing both sides, and then utilize rubber seal 10 with screw rod body 1 and nut body 2 and fasten the gap between the thing sealed, then revolve with screw thread bucket 3 revolve twist with screw rod body 1 on, and then utilize rubber sleeve 4 on the screw thread bucket 3 to seal the gap between screw thread bucket 3 and the nut body 2, and simultaneously, screw thread bucket 3 descends and drives the descending spring 6 and the holding down plate 7 decline in the polygonal groove 5 and make the up end ratchet 9 on the holding down plate 7 cooperate with the up end ratchet 8 of screw rod body 1 upper end, and then play and prevent that screw thread bucket 3 from reversing the effect.

The fastener is suitable for occasions with higher requirements on fastening tightness.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation. The use of the phrase "comprising one of the elements does not exclude the presence of other like elements in the process, method, article, or apparatus that comprises the element.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (5)

1. A high-sealing and high-strength nut fastener comprises a screw body (1), a nut body (2), a threaded barrel (3), a rubber sleeve (4), a polygonal groove (5), a downward pressing spring (6), a lower pressing plate (7), an upper end face ratchet (8), a lower end face ratchet (9) and a rubber sealing ring (10), wherein the nut body (2) is meshed and screwed with the screw body (1), the high-sealing and high-strength nut fastener is characterized in that the threaded barrel (3) is screwed and sleeved at the upper end of the screw body (1), the rubber sleeve (4) is sleeved outside the threaded barrel (3), the polygonal groove (5) is fixedly opened in the threaded barrel (3), the upper end of the downward pressing spring (6) is fixedly installed on the inner upper surface of the polygonal groove (5), the downward pressing plate (7) is slidably embedded in the polygonal groove (5), and the upper surface of the downward pressing spring is connected with the lower end of the downward pressing spring (6), the upper end face ratchet (8) is arranged on the lower surface of the lower pressing plate (7), the lower end face ratchet (9) is arranged on the upper end face of the screw rod part of the screw rod body (1), and the two rubber sealing rings (10) are sleeved on the screw rod body (1) and are located below the nut body (2).

2. The nut fastener with high sealing performance and high strength as claimed in claim 1, characterized in that the threaded barrel (3) is a barrel-shaped structure with a hexagonal outer surface, the threaded barrel (3) is provided with a fixing thread (11), the fixing thread (11) is arranged at the lower part in the threaded barrel (3) and below the polygonal groove (5), and the fixing thread (11) is engaged with the thread on the screw body (1).

3. The nut fastener with high sealing performance and high strength as claimed in claim 1, characterized in that the rubber sleeve (4) is of a rubber structure which is adhesively mounted on the outer surface of the threaded barrel (3), and the lower part of the rubber sleeve (4) is connected below the lower surface of the threaded barrel (3).

4. A high-sealing high-strength nut fastener according to claim 1, characterized in that said lower pressing plate (7) is a polygonal block structure corresponding to the shape of the polygonal groove (5).

5. The high-tightness and high-strength nut fastener according to claim 1, characterized in that the upper end surface ratchets (8) are annularly distributed ratchets opened on the lower end surface of the lower pressure plate (7), and the lower end surface ratchets (9) are annularly distributed ratchets opened on the upper end surface of the screw body (1) and engaged with the upper end surface ratchets (8).

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