阅读说明：本技术 一种止退防松组合螺母 (A kind of locking combination nut of retaining ) 是由 唐旭文 于 2019-09-02 设计创作，主要内容包括：本发明提出了一种止退防松组合螺母,包括第一螺母本体、第二螺母本体、弹性压块、驱动垫片、止退套和防盗保护套,所述第一螺母本体、第二螺母本体自下至上依次设置,两者的外部套设有防盗保护套,所述第一螺母本体的顶部设有第二环形凸台,所述第二螺母本体的底部安装有止退套,所述第二环形凸台与止退套相抵靠配合,在第二环形凸台的抵靠作用下,止退套的止退卡沿径向向内收缩,所述第一螺母本体的底部安装有弹性压块,所述驱动垫片的上方设有第一环形凸台,所述第一环形凸台与弹性压块相挤压配合,在第一环形凸台的挤压作用下弹性压块发生变形。能够保证安装在螺栓上的螺母受频繁振动和荷载变化等各种恶劣工作环境下不发生松动。(The invention proposes a kind of locking combination nuts of retaining, including the first nut body, second nut body, elastic press, drive gasket, retaining set and anti-theft protection set, first nut body, second nut body is set gradually from bottom to top, the outer cover of the two is equipped with anti-theft protection set, the top of first nut body is equipped with the second annular convex platform, the bottom of second nut body is equipped with retaining set, second annular convex platform and retaining set lean cooperation, under the abutment action of the second annular convex platform, the locking card of retaining set is shunk radially inward, the bottom of first nut body is equipped with elastic press, the top of the driving gasket is equipped with first annular boss, the first annular boss and elastic press phase extrusion fit, elastic press deforms under the squeezing action of first annular boss.It can guarantee that the nut being mounted on bolt does not loosen under by the various harsh environments such as frequent vibration and loads change.)

1. a kind of locking combination nut of retaining, it is characterised in that: including the first nut body (1), the second nut body (2), bullet Property briquetting (3), driving gasket (4), retaining set (5) and anti-theft protection set (6), first nut body (1), the second nut sheet Body (2) is set gradually from bottom to top, and the outer cover of the two is equipped with anti-theft protection set (6), the lower section of first nut body (1) The first limit stepped groove (12) for preventing anti-theft protection set (6) from deviating from is offered, the top of first nut body (1) is equipped with The bottom of second annular convex platform (11), second nut body (2) offers mounting groove (22), retaining set (5) setting In the mounting groove (22), second annular convex platform (11) and retaining set (5) lean cooperation, the circumferential direction of the retaining set (5) Be arranged at intervals with several locking cards (52), under the abutment action of the second annular convex platform (11), locking card (52) radially to The bottom of contract, first nut body (1) is equipped with elastic press (3), is set below first nut body (1) Have driving gasket (4), the top of driving gasket (4) is equipped with first annular boss (41), the first annular boss (41) With elastic press (3) phase extrusion fit, elastic press (3) deforms under the squeezing action of first annular boss (41).

2. a kind of locking combination nut of retaining as described in claim 1, it is characterised in that: the retaining set (5) further includes peace Multiple locking cards (52), the installation set is arranged in the outer weekly interval of encapsulation (51) and anti-rotation card (53), the installation set (51) (51) outer wall positioning cams with outward extension (511), the installation set (51) is fixed in mounting groove (22), described The side wall of mounting groove (22) offers and positioning cams (511) compatible positioning ring groove (221), the mounting groove (22) Lower end offers the compatible importing annular groove (21) with the second annular convex platform (11), and second annular convex platform (11) is from importing ring Insertion, leans with retaining set (5), two anti-rotation cards (53), institute is symmetrically arranged with above the installation set (51) in slot (21) State symmetrically opened up on mounting groove (22) there are two with anti-rotation card (53) compatible anti-rotation groove (23).

3. a kind of locking combination nut of retaining as claimed in claim 2, it is characterised in that: the outer wall of the locking card (52) is certainly Under it is supreme be successively arranged inclined-plane (521) and arc concave shape slot (522), the inner ring of second annular convex platform (11) is equipped with and inclined-plane (521) the second driving conical surface (111) matched.

4. a kind of locking combination nut of retaining as described in claim 1, it is characterised in that: the anti-theft protection set (6) is circle The lower end of tubular, the anti-theft protection set (6) has radially extended convex edge (61), and the cross sectional shape of the convex edge (61) is ring Shape, first limit stepped groove (12) are annular groove, and the internal diameter of the convex edge (21) is greater than the first limit stepped groove (12) Outer diameter.

5. a kind of locking combination nut of retaining as described in claim 1, it is characterised in that: first nut body (1) Outer wall is cylindrical body, and the lower end of first nut body (1) offers the second limit stepped groove communicated with its internal screw thread chamber (13), the elastic press (3) is installed in the second limit stepped groove (13), and the outer ring of the elastic press (3) is equipped with taper Face (32), the inner ring of the first annular boss (41) are equipped with the first driving conical surface (411).

6. a kind of locking combination nut of retaining as described in claim 1, it is characterised in that: under the anti-theft protection set (6) End is equipped with the compatible convex edge (21) with the first limit stepped groove (12), and the height of the anti-theft protection set (6) is greater than the first spiral shell Total height after maternal body (1), the second nut body (2), driving gasket (4) installation.

7. a kind of locking combination nut of retaining as described in claim 1, it is characterised in that: first nut body (1), the The upper surface of two nut bodies (2) is evenly equipped with several along nut installation direction by the driver slot (7) shallowly deepened.

[technical field]

The present invention relates to the technical field of fastener, especially a kind of locking combination nut of retaining.

[background technique]

Currently, bolt and nut connection is a kind of very common connecting mode in field of mechanical technique, in automobile, aviation The fields such as space flight, rail traffic and production equipment manufacture are very widely used.By high-strength impact load, high-intensitive alternation In load and the working environment of high temperature variation, bolt and nut couples the problem of being produced from loosening.Bolt connection anti-loose It is the very important link of mechanical engineering field, it is proposed that a kind of locking combination nut of retaining.

[summary of the invention]

The object of the invention is to solve the problems of the prior art, a kind of locking combination nut of retaining is proposed, guarantee peace Nut on bolt does not loosen under by the various harsh environments such as frequent vibration and loads change.

To achieve the above object, the invention proposes a kind of locking combination nuts of retaining, including the first nut body, second Nut body, elastic press, driving gasket, retaining set and anti-theft protection set, first nut body, the second nut body are certainly Under it is supreme set gradually, the outer cover of the two is equipped with anti-theft protection set, and offering below first nut body prevents Steal the first limit stepped groove of protective case abjection, the top of first nut body is equipped with the second annular convex platform, and described second The bottom of nut body offers mounting groove, and the retaining set is set in mounting groove, second annular convex platform and retaining set Lean cooperation, and the retaining set has been provided at circumferentially spaced several locking cards, under the abutment action of the second annular convex platform, Locking card is shunk radially inward, and the bottom of first nut body is equipped with elastic press, first nut body Lower section is equipped with driving gasket, and the top of the driving gasket is equipped with first annular boss, and the first annular boss and elasticity are pressed Block phase extrusion fit, elastic press deforms under the squeezing action of first annular boss.

Preferably, the retaining set further includes installation set, multiple locking cards, institute is arranged in the outer weekly interval of the installation set The outer wall positioning cams with outward extension of installation set are stated, the installation set is fixed in mounting groove, the mounting groove Side wall offers positioning ring groove compatible with positioning cams, and the lower end of the mounting groove offers and the second annular convex platform phase The importing annular groove of adaptation, second annular convex platform from import annular groove in be inserted into, lean with retaining set, the installation set it is upper Side is symmetrically arranged with two anti-rotation cards, is symmetrically opened up on the mounting groove there are two anti-rotation groove compatible with anti-rotation card.

Preferably, the outer wall of the locking card is successively arranged inclined-plane and arc concave shape slot, second ring from bottom to top The inner ring of shape boss is equipped with the second driving conical surface matched with inclined-plane.

Preferably, the anti-theft protection set is cylindrical shape, the lower end of the anti-theft protection set has radially extended convex edge, The cross sectional shape of the convex edge is annular, and the first limit stepped groove is annular groove, and the internal diameter of the convex edge is greater than the first limit The outer diameter of position stepped groove.

Preferably, the outer wall of first nut body is cylindrical body, the lower end of first nut body is offered The the second limit stepped groove communicated with its internal screw thread chamber, the elastic press are installed in the second limit stepped groove, the elasticity The outer ring of briquetting is equipped with tapered surface, and the inner ring of the first annular boss is equipped with the first driving conical surface, the second limit ladder The upper end of slot offers annular slot, and the upper end of the elastic press is equipped with annular clamping portion compatible with annular slot.

Preferably, the lower end of the anti-theft protection set is equipped with convex edge compatible with the first limit stepped groove, it is described anti- The height for stealing protective case is greater than the total height after the first nut body, the second nut body, driving gasket installation.

It is installed preferably, the upper surface of first nut body, the second nut body is evenly equipped with several along nut Direction is by the driver slot shallowly deepened.

Beneficial effects of the present invention: the present invention passes through the first nut body, the second nut body, elastic press, actuator pad The cooperation of piece, retaining set and anti-theft protection set etc., the cooperation of the first nut body and retaining set can drive locking card radial contraction It leans with the body of bolt, and by the cooperation of driving gasket and elastic press, make elastic press deformation occurs and connect bolt Interference fit is generated, can be avoided and loosen, guarantees the fixing of connection；Nut body outer cover sets the knot of antitheft protective case Structure, anti-theft protection set dallies when being dismantled using current general pipe wrench, standard wrench, cannot tear open to nut body It unloads, to ensure that the safety of institute's fastening object.

Feature and advantage of the invention will be described in detail by embodiment combination attached drawing.

[Detailed description of the invention]

Fig. 1 is a kind of cross section structure schematic diagram of the locking combination nut of retaining of the present invention；

Fig. 2 is a kind of top view of the locking combination nut of retaining of the present invention；

Fig. 3 is a kind of schematic cross-section of first nut body of the locking combination nut of retaining of the present invention；

Fig. 4 is a kind of top view of first nut body of the locking combination nut of retaining of the present invention；

Fig. 5 is a kind of schematic cross-section of second nut body of the locking combination nut of retaining of the present invention；

Fig. 6 is a kind of schematic cross-section of the driving gasket of locking combination nut of retaining of the present invention；

Fig. 7 is a kind of schematic cross-section of the retaining set of locking combination nut of retaining of the present invention；

Fig. 8 is a kind of schematic cross-section of the anti-theft protection set of locking combination nut of retaining of the present invention.

[specific embodiment]

Refering to fig. 1 to a kind of locking combination nut of retaining of Fig. 8 present invention, including the first nut body 1, the second nut body 2, elastic press 3, driving gasket 4, retaining set 5 and anti-theft protection set 6, first nut body 1, the second nut body 2 are certainly Under it is supreme set gradually, the outer cover of the two is equipped with anti-theft protection set 6, and the lower section of first nut body 1 offers and prevents First limit stepped groove 12 of 6 abjection of anti-theft protection set, the top of first nut body 1 are equipped with the second annular convex platform 11, The bottom of second nut body 2 offers mounting groove 22, and the retaining set 5 is set in mounting groove 22, second ring Shape boss 11 and retaining set 5 lean cooperation, and the retaining covers 5 and has been provided at circumferentially spaced several locking cards 52, second Under the abutment action of annular convex platform 11, locking card 52 is shunk radially inward, and the bottom of first nut body 1 is equipped with bullet Property briquetting 3, the lower section of first nut body 1 is equipped with driving gasket 4, and the top of the driving gasket 4 is equipped with first annular Boss 41, the first annular boss 41 is with 3 phase extrusion fit of elastic press, the bullet under the squeezing action of first annular boss 41 Property briquetting 3 deforms.The retaining set 5 further includes installation set 51, and multiple retainings are arranged in the outer weekly interval of the installation set 51 Card 52, the outer wall of the installation set 51 positioning cams 511 with outward extension, the installation set 51 is fixed on mounting groove 22 Interior, the side wall of the mounting groove 22 offers positioning ring groove 221 compatible with positioning cams 511, the mounting groove 22 Lower end offers importing annular groove 21 compatible with the second annular convex platform 11, and second annular convex platform 11 is from importing annular groove 21 Insertion 5 leans with retaining set, and the top of the installation set 51 is symmetrically arranged with two anti-rotation cards 53, right on the mounting groove 22 Title is opened up there are two anti-rotation groove 23 compatible with anti-rotation card 53.The outer wall of the locking card 52 is successively arranged inclined-plane from bottom to top 521 and arc concave shape slot 522, the inner ring of second annular convex platform 11 is equipped with the second driving conical surface matched with inclined-plane 521 111.The anti-theft protection set 6 is cylindrical shape, and the lower end of the anti-theft protection set 6 has radially extended convex edge 61, the convex edge 61 cross sectional shape is annular, and the first limit stepped groove 12 is annular groove, and the internal diameter of the convex edge 21 is greater than the first limit The outer diameter of stepped groove 12.The outer wall of first nut body 1 is cylindrical body, and the lower end of first nut body 1 offers The the second limit stepped groove 13 communicated with its internal screw thread chamber, the elastic press 3 is installed in the second limit stepped groove 13, described The outer ring of elastic press 3 is equipped with tapered surface 32, and the inner ring of the first annular boss 41 is equipped with the first driving conical surface 411, described The upper end of second limit stepped groove 13 offers annular slot 131, and the upper end of the elastic press 3 is equipped with and annular slot 131 Compatible annular clamping portion 31.The lower end of the anti-theft protection set 6 is equipped with convex edge compatible with the first limit stepped groove 12 21, the height of the anti-theft protection set 6 is greater than total height after the first nut body 1, the second nut body 2, driving gasket 4 are installed Degree.First nut body 1, the second nut body 2 upper surface be evenly equipped with several along nut installation direction by shallowly deepening Driver slot 7.

The course of work of the present invention:

A kind of locking combination nut of retaining of the present invention, during use, first by anti-theft protection set, driving gasket installation On bolt, then passing sequentially through the first nut body, the second nut body will with the specific purpose tool of the driver slot at the top of it Nut installation screws, wherein the cooperation of the second annular convex platform and retaining set can drive locking card radial contraction and bolt External wall leans, and by the cooperation of driving gasket and elastic press, makes elastic press deformation occurs and connect bolt production Raw interference fit, realizes dual locking effect, guarantees the fixing of connection.Due to the presence of anti-theft protection set, using current When general pipe wrench, standard wrench are dismantled, anti-theft protection set will dally, and cannot dismantle to nut body, thus It ensure that the safety of institute's fastening object.

Above-described embodiment is the description of the invention, is not limitation of the invention, after any pair of simple transformation of the present invention Scheme all belong to the scope of protection of the present invention.