CN211343676U

CN211343676U - Flange nut

Info

Publication number: CN211343676U
Application number: CN201922141162.8U
Authority: CN
Inventors: 方宏展; 陈鳌; 李丹; 林爱华; 陈淑丽
Original assignee: Wenzhou Ruitai Fastener Co ltd
Current assignee: Wenzhou Ruitai Fastener Co ltd
Priority date: 2019-12-03
Filing date: 2019-12-03
Publication date: 2020-08-25
Anticipated expiration: 2029-12-03

Abstract

The utility model relates to a flange nut, which relates to the technical field of nuts and comprises an installation head and a pad disc arranged at the lower end of the installation head, wherein the middle part of the installation head is provided with a through threaded hole; the bottom of the pad disc is provided with a yielding groove, and a spring is arranged in the yielding groove along the height direction of the mounting head; the other end of the spring is fixedly connected with a pressing piece, and the lower end of the pressing piece penetrates out of the opening of the abdicating groove. The utility model discloses it is effectual to have locking, fixed firm effect.

Description

Flange nut

Technical Field

The utility model relates to a technical field of nut, more specifically say, it relates to a flange nut.

Background

Flange nuts, also known as cushion nuts, flower tooth nuts, hexagonal flange face nuts, flange nuts and the like are mostly used for pipeline connection or workpieces needing to increase the contact surface of the nut. The flange nut and the general hexagonal nut have the same size and thread specification basically, but compared with the hexagonal nut, the gasket and the nut are integrated, so that the surface area contact of the nut and a workpiece is increased, and compared with the combination of a common nut and a gasket, the flange nut is firmer and has larger pulling force.

Chinese patent with publication number CN207364062U discloses a flange nut in the prior art, which comprises a nut body, wherein the nut body comprises an annular flange part and a connecting part connected with the flange part into a whole, and the connecting part deviates from the end surface on one side of the flange part and is provided with an annular sealing groove. By adopting the scheme, when the flange nut is assembled, the sealing ring can be embedded into the sealing groove, so that the sealing ring is firmly fixed on the end face of the outer side of the connecting part, and the sealing performance of the assembled flange nut is ensured.

The above prior art solutions have the following drawbacks: when the flange nut in the patent is installed in an oil pipeline or an environment with frequent shaking, the flange part is easy to loosen due to the influence of the surrounding environment because the bottom of the flange part is smooth; once the flange part is loosened, the flange nut can be separated from the bolt; the flange nut in the patent has poor anti-loosening effect and needs to be improved in anti-loosening performance.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art exists, the utility model provides a flange nut has locking effectual, fixed firm effect.

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

a flange nut comprises an installation head and a pad arranged at the lower end of the installation head, wherein the middle part of the installation head is provided with a through threaded hole; the bottom of the pad disc is provided with a yielding groove, and a spring is arranged in the yielding groove along the height direction of the mounting head; the other end of the spring is fixedly connected with a pressing piece, and the lower end of the pressing piece penetrates out of the opening of the abdicating groove.

By adopting the technical scheme, when the mounting head is screwed on the matched bolt through the threaded hole, the pressing piece gradually approaches to the mounting surface along with the continuous downward movement of the cushion disc; when the lower end of the pressing piece is in contact with the mounting surface, the pressing piece is gradually pressed into the yielding groove along with the continuous downward movement of the cushion disc; the continuously compressed spring generates reverse elasticity to press the lower end of the pressing piece on the mounting surface; the overall stability of the bottom of the cushion disc can be improved under the combined action of the pressing piece and the spring, the anti-sliding capacity of the cushion disc is improved, and the probability of looseness of the cushion disc is reduced.

The utility model discloses further set up to: the pressing piece is characterized in that symmetrical bulges are arranged on the side walls of the pressing pieces, the inner side wall of the abdicating groove is provided with a limiting groove for relative sliding of the bulges, and the limiting groove is arranged along the extension direction of the spring.

By adopting the technical scheme, the bulge can limit the sliding range of the pressing piece, and meanwhile, the pressing piece can be more stable in moving; when the cushion disc is screwed on the mounting surface, the pressing piece can be prevented from being twisted in the abdicating groove under the action of the protrusion to cause the damage of the spring, and the effect of protecting the spring is achieved.

The utility model discloses further set up to: the lower end of the pressing piece is provided with a withdrawing groove, a pressing bead is rotationally connected in the withdrawing groove, the lower end of the pressing bead penetrates out of the withdrawing groove, and the opening of the withdrawing groove is smaller than the maximum diameter of the pressing bead.

By adopting the technical scheme, when the cushion disc is screwed on the mounting surface, the lower end of the pressing piece can more smoothly move along the rotation direction of the cushion disc through the rolling of the pressing bead, so that the resistance of the lower end of the pressing piece to the rotation of the cushion disc in the rotation process of the cushion disc is reduced; the rotation of the pad disc is smoother and smoother; because the opening of the retreat groove is smaller than the maximum diameter of the pressing bead, the pressing bead can be prevented from falling out of the opening of the retreat groove, and the stability of the pressing bead is improved.

The utility model discloses further set up to: the number of the pressing pieces is at least two, and the pressing pieces are uniformly surrounded around the threaded holes.

Through adopting above-mentioned technical scheme, when screwing up the rim plate on the installation face, the casting die that is even setting can guarantee the level of bottom surface under the rim plate, avoids the condition that the rim plate takes place the slope, improves the overall stability after the rim plate installation finishes.

The utility model discloses further set up to: the bottom of the cushion disc is provided with spirally-surrounding anti-skidding insections, and the spiral direction of the anti-skidding insections is opposite to the screwing direction of the mounting head; and the lower end of the pressing bead exceeds the lower side wall of the anti-skid insection.

By adopting the technical scheme, when the lower bottom surface of the pad disc is in contact with the mounting surface, the anti-skid performance of the bottom of the pad disc can be further enhanced through the anti-skid insection because the spiral direction of the anti-skid insection is opposite to the screwing direction of the mounting head; when the saucer is about to become flexible, the bottom surface of the saucer can be tightly bitten on the mounting surface through the anti-skidding insection, so that the saucer is prevented from rotating in the direction of becoming flexible, and the anti-loosening effect is achieved on the saucer.

The utility model discloses further set up to: a smooth arc-shaped chamfer is formed on one circle of outer side wall of the pad disc.

Through adopting above-mentioned technical scheme, glossy arc chamfer can avoid the saucer outer lane to cut the user, improves the security in the use.

The utility model discloses further set up to: the outer side wall of the mounting head is provided with a hole along the horizontal direction.

By adopting the technical scheme, because the mounting head is in a regular hexagon shape, the mounting head is usually screwed out through a wrench when the mounting head needs to be screwed out of the bolt; when the wrench is not carried, the mounting head can be rotated by inserting a bolt cutter or a rod-shaped tool into the opening; provides convenience for the user to screw out.

The utility model discloses further set up to: the bottom surface of the pad disc is provided with a ring groove coaxial with the threaded hole, and a rubber ring is placed in the ring groove.

Through adopting above-mentioned technical scheme, the leakproofness between saucer and the installation face can not only be strengthened to the rubber circle, can increase frictional force between the two through the rubber circle moreover, has further strengthened the non-skid property between saucer and installation face.

To sum up, the utility model discloses a following at least one useful technological effect:

1. when the cushion pan is screwed on the mounting surface, the overall stability of the bottom of the cushion pan can be improved under the combined action of the pressing piece and the spring, the anti-sliding capacity of the cushion pan is improved, and the probability of looseness of the cushion pan is reduced;

2. when the cushion disc is screwed on the mounting surface, the lower end of the pressing piece can smoothly move along the rotation direction of the cushion disc through the rolling of the pressing bead, so that the resistance of the lower end of the pressing piece to the rotation of the cushion disc in the rotation process of the cushion disc is reduced; the rotation of the pad disc is smoother and smoother;

3. the anti-skid performance of the bottom of the cushion pan can be further enhanced through the anti-skid insections.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic view showing the explosion of the local structure of the annular groove on the bottom surface of the pad of the present invention;

fig. 3 is a schematic view showing the local structure explosion in the receding groove on the bottom surface of the pad of the present invention.

Reference numerals: 1. a mounting head; 2. a pad disc; 3. a threaded hole; 4. a yielding groove; 5. a spring; 6. pressing parts; 7. a protrusion; 8. a limiting groove; 9. a withdrawal groove; 10. pressing the beads; 11. anti-skid insections; 12. chamfering; 13. opening a hole; 14. a ring groove; 15. a rubber ring.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

As shown in fig. 1, a flange nut comprises a block-shaped mounting head 1 in a regular hexagon shape, a coaxial pad 2 is integrally formed at the lower end of the mounting head 1, and the maximum diameter of the pad 2 is larger than the maximum width of the mounting head 1. A central shaft of the mounting head 1 is provided with a threaded hole 3 which penetrates up and down. One side of the mounting head 1 is provided with an opening 13 along the outer side wall in the vertical direction, and the opening 13 is arranged along the horizontal direction. A smooth arc-shaped chamfer 12 is formed on one outer side wall around the saucer 2.

As shown in fig. 2, the bottom of the saucer 2 is formed with a spirally-wound anti-slip insection 11, and the spiral direction of the anti-slip insection 11 is opposite to the screwing direction of the mounting head 1. The lower bottom surface of the pad disc 2 is also provided with a ring groove 14 which is coaxial with the threaded hole 3, and the inner side of the ring groove 14 is communicated with the threaded hole 3. The lower bottom surface of the cushion disc 2 is provided with a rubber ring 15 through an annular groove 14, and the rubber ring 15 is limited and fixed in the annular groove 14.

As shown in fig. 2 and 3, three abdicating grooves 4 located on the anti-skid insections 11 are formed in the bottom of the pad 2, and the three abdicating grooves 4 are uniformly and circumferentially arranged in a surrounding manner. The recess groove 4 is provided along the height direction of the mounting head 1. The spring 5 along the height direction of the mounting head 1 is fixedly mounted in the yielding groove 4, the pressing piece 6 is fixedly mounted at the lower end of the spring 5, and the lower end of the pressing piece 6 penetrates out of the lower end opening of the yielding groove 4.

As shown in fig. 2 and 3, symmetrical protrusions 7 are provided on the side walls of the pressing member 6 facing away from each other, and the protrusions 7 extend in the direction away from each other. Spacing groove 8 has all been seted up on the relative inside wall in groove 4 of stepping down, and spacing groove 8 sets up along spring 5's flexible direction. The two bulges 7 are respectively arranged in the opposite limiting grooves 8 in a sliding way. The lower end of the pressing piece 6 is provided with a spherical retreating groove 9, and a spherical pressing bead 10 is arranged in the retreating groove 9 in a rolling manner. The lower end of the retreating groove 9 is provided with an opening with the caliber smaller than the maximum diameter of the pressing bead 10, and the bottom of the pressing bead 10 penetrates out of the opening at the lower end of the retreating groove 9. The lower end of the pressing bead 10 goes beyond the lower side wall of the non-slip insection 11 in a natural state.

The implementation principle of the above embodiment is as follows: when the mounting head 1 is screwed on the matched bolt through the threaded hole 3, the pressing piece 6 gradually approaches to the mounting surface along with the continuous downward movement of the pad 2. When the lower end of the pressing piece 6 is contacted with the mounting surface, the pressing piece 6 is gradually pressed into the yielding groove 4 along with the continuous downward movement of the cushion disc 2; the continuously compressed spring 5 generates reverse elasticity to press the lower end of the pressing piece 6 on the mounting surface; the overall stability of the bottom of the pad 2 can be improved under the combined action of the pressing piece 6 and the spring 5, the anti-sliding capacity of the pad 2 is improved, and the probability of looseness of the pad 2 is reduced. When the cushion pan 2 is screwed on the mounting surface, the lower end of the pressing piece 6 can run along the rotation direction of the cushion pan 2 more smoothly through the rolling of the pressing bead 10, so that the resistance of the lower end of the pressing piece 6 to the rotation of the cushion pan 2 in the rotation process of the cushion pan 2 is reduced. The saucer 2 can rotate more smoothly and smoothly.

The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims

1. The utility model provides a flange nut, includes installation head (1) to and set up at the rim plate (2) of installation head (1) lower extreme, set up threaded hole (3) that run through in the middle part of installation head (1), its characterized in that: the bottom of the pad disc (2) is provided with a yielding groove (4), and a spring (5) is arranged in the yielding groove (4) along the height direction of the mounting head (1); the other end of the spring (5) is fixedly connected with a pressing piece (6), and the lower end of the pressing piece (6) penetrates out of an opening of the abdicating groove (4).

2. A flange nut according to claim 1, wherein: be provided with protruding (7) of symmetry on the lateral wall that casting die (6) deviate from each other, offer on groove (4) the inside wall and supply gliding spacing groove (8) of relative protruding (7), spacing groove (8) set up along the flexible direction of spring (5).

3. A flange nut according to claim 2, wherein: the lower end of the pressing piece (6) is provided with a retreating groove (9), a pressing bead (10) is rotationally connected in the retreating groove (9), and the lower end of the pressing bead (10) penetrates out of the retreating groove (9); the opening of the receding groove (9) is smaller than the maximum diameter of the pressing bead (10).

4. A flange nut according to claim 3, wherein: the number of the pressing pieces (6) is at least two, and the pressing pieces (6) are uniformly surrounded around the threaded holes (3).

5. A flange nut according to claim 3, wherein: the bottom of the pad plate (2) is provided with spirally-surrounding anti-skidding insections (11), and the spiral direction of the anti-skidding insections (11) is opposite to the screwing direction of the mounting head (1); and the lower end of the pressing bead (10) exceeds the lower side wall of the anti-skid insection (11).

6. A flange nut according to claim 5, wherein: a smooth arc-shaped chamfer (12) is formed on one circle of outer side wall of the pad disc (2).

7. A flange nut according to claim 1, wherein: the outer side wall of the mounting head (1) is provided with a hole (13) along the horizontal direction.

8. A flange nut according to claim 1, wherein: the bottom surface of the pad disc (2) is provided with a ring groove (14) coaxial with the threaded hole (3), and a rubber ring (15) is placed in the ring groove (14).