CN201539490U - Lock nut - Google Patents

Abstract

The utility model relates to the technical field of nuts, in particular to a lock nut. The lock nut comprises a nut and a gasket, wherein the gasket is provided with a perforation; the bottom part of the nut is formed with an annular connecting part that is nested in the perforation of the gasket; and the gasket comprises an upper gasket and a lower gasket that are riveted. The gasket adopts two-part structure, can be easily manufactured in actual processing, is not easy to be abraded and can effectively function in preventing looseness.

Description

Lock nut

Technical field:

The utility model relates to nut technical field, particularly lock nut.

Background technique:

Application number is that " 200510020908.X ", name are called in the Chinese invention patent ublic specification of application of " a kind of assembly parts of nut washer " and disclose a kind of assembly parts, it is made of nut, pad, nut wherein one side is provided with the equiangularly arranged and high low wedge shape inclined-plane that is inclined thrust surface on one side on one side, and each wedge shape inclined-plane joining place forms the block face of the high low head of tool; The central authorities of pad are provided with perforation, pad one side wherein is formed with and the corresponding continuous inclined-plane that agrees with, each wedge shape inclined-plane of nut, the joining place on each continuous inclined-plane forms the bearing surface of the high low head of tool, the another side of pad is provided with several pointed grooves, described pointed groove tool one facade and an inclined-plane, the inclined-plane push away tilted direction and continuous inclined-plane to push away tilted direction identical, the periphery on nut wedge shape inclined-plane outwards extends to form flanged surface continuously, and the below of this flanged surface is formed with the cylindricality ring that cooperates with supporting pad central hole.

Disclosed assembly parts in the foregoing invention patent application, because the restriction of production technology at present, pad adopts soft material die casting to produce, so just formed defective, at first, contacted first between pad and the attachment face and fixingly can play locking effect, but, if reuse after pad unclamped, then because the wearing and tearing of pad and attachment face when using first are difficult to play stable contact locking effect when reusing; Secondly, because the pointed groove of pad bottom moulding, itself does not contact pointed groove with attachment face, contacts with the tight of attachment face so can't strengthen pad by this pointed groove; By as can be known aforementioned, there is certain defective in the disclosed technological scheme of foregoing invention patent application, can't really play locking effect in actual use.

The claimant of above-mentioned patent application is in having proposed another Chinese invention patent application on the same day, application number is that " 200510020909.4 ", name are called " a kind of assembly parts of high light nut washer ", a kind of assembly parts is disclosed in this application for a patent for invention prospectus, also there is the aforementioned techniques defective in this application technological scheme, can't really play locking effect in actual use.

Therefore, this China invites the person improves technique scheme, can really play locking effect in actual use, the special present patent application that proposes.

The model utility content:

The purpose of this utility model is to provide a kind of lock nut at the deficiencies in the prior art, and it can make the tight and attachment face contact matching of pad, really plays anti-loosing effect, and, pad and attachment face can not wear and tear, even when reusing, can play locking effect too.

For achieving the above object, the utility model adopts following technological scheme:

It comprises nut, pad, and pad offers perforation, and the nut bottom forms annular joint, and this annular joint is nested in the perforation of pad, and pad includes Upper gasket, lower levelling plate, Upper gasket and lower levelling plate riveted joint.

Described Upper gasket bottom forms contiguous block, and lower levelling plate offers the attachment hole for the contiguous block riveted.

Described Upper gasket top forms continuous a plurality of wedge shape blocks.

Described lower levelling plate bottom forms stiffening rib.

Described stiffening rib is shape from low to high, and consistent with the shape of block, can increase when installing and the contact force of attachment face.

Described nut bottom has the inclined-plane with the block coupling of Upper gasket.

Described pad is an annular gasket, and its side offers breach.

The shape of described pad is consistent with nut shape.

The beneficial effects of the utility model are, pad adopts two-part structure, and actual adding can be easy to produce man-hour, can increase and attachment face between contact force, and be not easy wearing and tearing, can effectively play locking effect, can repeatedly use.

Description of drawings:

Fig. 1 is embodiment's one an of the present utility model plan view

Fig. 2 is embodiment's one an of the present utility model inside composite structure schematic representation

Fig. 3 is embodiment's two an of the present utility model plan view

Fig. 4 is embodiment's two an of the present utility model inside composite structure schematic representation

1---nut, 2---pad, 3---annular joint, 4---Upper gasket, 5---lower levelling plate, 6---block, 7---contiguous block, 8---attachment hole, 9---stiffening rib, 10---breach.

Embodiment:

Below in conjunction with accompanying drawing the utility model is further described.

See accompanying drawing 1,2, schematic representation for embodiment one of the present utility model, the utility model comprises: nut 1, pad 2, and wherein, nut 1 is a hexagon nut, pad 2 is an annular gasket, pad 2 offers perforation, and nut 1 bottom forms annular joint 3, and this annular joint 3 is nested in the perforation of pad 2, thereby nut 1 and annular gasket 2 can't be broken away from and form assembly parts, nut 1 pad 2 relatively rotates; Wherein, pad 2 includes Upper gasket 4, lower levelling plate 5, Upper gasket 4 and lower levelling plate 5 riveted joints.

Described Upper gasket 4 bottoms form contiguous block 7, and lower levelling plate 5 offers the attachment hole 8 for contiguous block 7 riveteds, contiguous block 7 is passed attachment hole 8 back riveteds, thereby Upper gasket 4 and lower levelling plate 5 are closely linked together.

Described Upper gasket 4 tops form continuous a plurality of wedge shape blocks 6, and described nut 1 bottom has the inclined-plane with block 6 coupling of Upper gasket 4, adopt the wedge shape block 6 of this structure, when pad is motionless, nut 1 only can unidirectionally rotate, and only can be stubborn more tight more, thereby realizes anti-loosing effect.

Described lower levelling plate 5 bottoms form stiffening rib 9, and stiffening rib 9 has many, is evenly distributed in the bottom of lower levelling plate 5.

Described stiffening rib 9 is shape from low to high, and consistent with the shape of block 6, and promptly stiffening rib 9 roughly is wedge shape, adopts this structure, has two kinds of advantages, and the one,, consistent with nut 1 sense of rotation, so just can conveniently install; The 2nd,, when nut 1 was tightened, stiffening rib 9 can the roof pressure attachment face, and stiffening rib 9 slightly is absorbed in the attachment face, forms certain stopping, makes the utility model anti-loosing effect better.

After adopting said structure of the present utility model, Upper gasket 4 can adopt the die casting mode to process the block 6 of direct formation wedge shape, lower levelling plate 5 then can adopt through the bigger material of heat treated hardness ratio Upper gasket 4, adopt impact briquetting, because lower levelling plate 5 can adopt the big material impact briquetting of hardness, so lower levelling plate 5 can't produce wearing and tearing to lower levelling plate 5 with contacting of attachment face, and play anti-loosing effect more by the roof pressure of 9 pairs of attachment faces of stiffening rib, also existing product is incomparable just for this.

Further, described pad 2 sides offer breach 10, can rotate pad 2 by the instrument of being used by this breach 10, and the utility model is disassembled.

See accompanying drawing 3,4, schematic representation for embodiment two of the present utility model, structure and last embodiment are basic identical in the present embodiment, different is, nut 1 is a hexagon nut, and the shape of described pad 2 is consistent with nut 1 shape, also is hexagon, then need not in this case can utilize existing spanner can regulate pad 2 at pad 2 side moulding breach.

The utility model can play anti-loosing effect effectively, and practical effect is good.

Certainly, the embodiment of the above, it is preferred embodiments of the present utility model, be not to limit the utility model practical range, so all equivalences of doing according to the described structure of the utility model claim, feature and principle change or modify, and all should be included in the utility model claim.

Claims (8)

1. lock nut, it comprises nut (1), pad (2), pad (2) offers perforation, nut (1) bottom forms annular joint (3), this annular joint (3) is nested in the perforation of pad (2), it is characterized in that: pad (2) includes Upper gasket (4), lower levelling plate (5), Upper gasket (4) and lower levelling plate (5) riveted joint.

2. lock nut according to claim 1 is characterized in that: described Upper gasket (4) bottom forms contiguous block (7), and lower levelling plate (5) offers the attachment hole (8) for contiguous block (7) riveted.

3. lock nut according to claim 2 is characterized in that: described Upper gasket (4) top forms continuous a plurality of wedge shape blocks (6).

4. according to claim 2 or 3 described lock nuts, it is characterized in that: described lower levelling plate (5) bottom forms stiffening rib (9).

5. lock nut according to claim 4 is characterized in that: described stiffening rib (9) is shape from low to high, and consistent with the shape of block (6).

6. lock nut according to claim 3 is characterized in that: described nut (1) bottom has the inclined-plane with block (6) coupling of Upper gasket (4).

7. lock nut according to claim 1 is characterized in that: described pad (2) is an annular gasket, and its side offers breach (10).

8. lock nut according to claim 1 is characterized in that: the shape of described pad (2) is consistent with nut (1) shape.

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