阅读说明：本技术 防松螺母 (Anti-loose nut ) 是由 陈月亭 于 2019-10-12 设计创作，主要内容包括：本发明公开了一种防松螺母,其特征是：包括螺母本体、周向限位片和顶出螺栓；所述螺母本体上开设有贯穿螺母本体两个端面的中心螺纹孔和边位螺纹孔,以及螺母本体的其中一端面上开设有容纳槽；所述周向限位片设置于容纳槽内,并且其朝向容纳槽槽口的侧壁上具有摩擦面,以及其背向摩擦面的侧壁上具有定位槽；所述顶出螺栓配合于边位螺纹孔内,并且顶出螺栓的下端能够进入到容纳槽内的周向限位片上的定位槽内,以将周向限位片顶出容纳槽。本发明能够达到有效的防松效果。(The invention discloses a locknut which is characterized in that: the nut comprises a nut body, a circumferential limiting sheet and an ejection bolt; the nut body is provided with a central threaded hole and a side threaded hole which penetrate through two end faces of the nut body, and one end face of the nut body is provided with an accommodating groove; the circumferential limiting piece is arranged in the accommodating groove, a friction surface is arranged on the side wall of the circumferential limiting piece facing to the notch of the accommodating groove, and a positioning groove is arranged on the side wall of the circumferential limiting piece opposite to the friction surface; the ejection bolt is matched in the threaded hole of the side position, and the lower end of the ejection bolt can enter the positioning groove on the circumferential limiting sheet in the accommodating groove so as to eject the circumferential limiting sheet out of the accommodating groove. The invention can achieve the effective anti-loosening effect.)

1. The utility model provides a locknut which characterized in that: the nut comprises a nut body, a circumferential limiting sheet and an ejection bolt;

the nut body is provided with a central threaded hole and a side threaded hole which penetrate through two end faces of the nut body, and one end face of the nut body is provided with an accommodating groove;

the circumferential limiting piece is arranged in the accommodating groove, a friction surface is arranged on the side wall of the circumferential limiting piece facing to the notch of the accommodating groove, and a positioning groove is arranged on the side wall of the circumferential limiting piece opposite to the friction surface;

the ejection bolt is matched in the threaded hole of the side position, and the lower end of the ejection bolt can enter the positioning groove on the circumferential limiting sheet in the accommodating groove so as to eject the circumferential limiting sheet out of the accommodating groove.

2. The locknut of claim 1 wherein: the one end of limit position screw hole dorsad holding tank has the counter bore.

3. The locknut of claim 1 wherein: the holding tank and the circumferential limiting piece are both of an annular structure.

4. The locknut of claim 1 wherein: the friction surface is formed by a plurality of triangular grooves in a densely distributed mode.

5. The locknut of claim 1 wherein: the four side position threaded holes are uniformly arranged in a circle by taking the central threaded hole as a circle center.

Technical Field

The invention relates to a locknut.

Background

The nut is a nut, and is screwed together with a bolt or a screw rod to play a role in fastening, and one element which is necessary for all production and manufacturing machines is divided into carbon steel, stainless steel, non-ferrous metal (such as copper) and other types according to different materials.

Disclosure of Invention

Aiming at the defects of the prior art, the invention provides the locknut which can achieve an effective locking effect.

In order to achieve the purpose, the invention provides the following technical scheme:

the utility model provides a locknut which characterized in that: the nut comprises a nut body, a circumferential limiting sheet and an ejection bolt;

the nut body is provided with a central threaded hole and a side threaded hole which penetrate through two end faces of the nut body, and one end face of the nut body is provided with an accommodating groove;

the circumferential limiting piece is arranged in the accommodating groove, a friction surface is arranged on the side wall of the circumferential limiting piece facing to the notch of the accommodating groove, and a positioning groove is arranged on the side wall of the circumferential limiting piece opposite to the friction surface;

the ejection bolt is matched in the threaded hole of the side position, and the lower end of the ejection bolt can enter the positioning groove on the circumferential limiting sheet in the accommodating groove so as to eject the circumferential limiting sheet out of the accommodating groove.

Preferably, the end of the side position threaded hole, which faces away from the accommodating groove, is provided with a counter bore.

Preferably, the accommodating groove and the circumferential limiting piece are both of an annular structure.

Preferably, the friction surface is formed by a plurality of triangular grooves in a dense arrangement.

Preferably, the side position threaded holes are four and are circumferentially and uniformly arranged by taking the central threaded hole as a circle center.

The invention has the advantages that:

1. after the nut body and the bolt are screwed, the ejection bolt is screwed so as to push the circumferential limiting piece out of the accommodating groove to abut against the surface of the part to be locked, so that friction between a friction surface and the surface of the part to be locked in the screwing process is avoided, abrasion between the two surfaces is avoided, and the anti-loosening effect is remarkably improved;

2. the ejecting bolt is rotating and is pushing out the holding tank with the spacing piece of circumference and hug closely to the in-process of being locked the face of part, and ejecting bolt produces a counter force to the nut body for the internal thread of nut body is screwed up more tightly with the external screw thread of bolt, further promotes locking effect of moving.

Drawings

Fig. 1 is a sectional view of a locknut provided in the present embodiment;

fig. 2 is a bottom view of the locknut provided in this embodiment.

Detailed Description

The locknut of the present invention will be further described with reference to fig. 1 to 2.

The utility model provides a locknut which characterized in that: the nut comprises a nut body 1, a circumferential limiting sheet 3 and an ejection bolt 2.

The nut body 1 is provided with a central threaded hole 11 and a side threaded hole 12 which penetrate through two end faces of the nut body 1, and one end face of the nut body is provided with a containing groove 13, and the containing groove 13 is connected with a lower port of the side threaded hole 12.

Spacing piece 3 of circumference sets up in holding tank 13 to its friction surface 31 has on the lateral wall towards holding tank 13 notch, and has constant head tank 5 on its lateral wall that faces away from friction surface 31, and the thickness of spacing piece 3 of circumference is less than the degree of depth of holding tank 13, makes this spacing piece 3 of circumference can hide completely in holding tank 13, and the setting of constant head tank 5 can play limiting displacement between spacing piece 3 of circumference and ejecting bolt 2.

The ejection bolt 2 is matched in the side position threaded hole 12, and the lower end of the ejection bolt can enter the positioning groove 5 on the circumferential limiting sheet 3 in the accommodating groove 13 so as to eject the circumferential limiting sheet 3 out of the accommodating groove 13.

When the nut is used, in the process of screwing the nut body and the bolt, the circumferential limiting sheet is hidden in the area accommodating groove and is not in contact with the locked surface 41; after the nut body 1 and the bolt are screwed, the ejection bolt 2 is screwed to push the circumferential limiting piece 3 out of the accommodating groove 13 to abut against the surface 41 of the locked component 4, so that friction between the friction surface 31 and the surface 41 of the locked component 4 in the screwing process is avoided, abrasion between the two surfaces is avoided, and the anti-loosening effect is remarkably improved; the friction surface 31 is attached to the locked surface 41, so that the problem of looseness caused by rotation of the nut body 1 relative to the locked part is effectively avoided. On the other hand, in the process that the circumferential limiting piece 3 is pushed out of the accommodating groove 13 to be tightly attached to the surface of the locked part by the ejection bolt 2 in a rotating mode, the ejection bolt generates a reverse force on the nut body 1, so that the internal thread of the nut body 1 and the external thread of the bolt are screwed more tightly, and the anti-loosening effect is further improved.

The embodiment is further configured as follows: the end of the side position threaded hole 12, which faces away from the receiving groove 13, is provided with a countersunk hole 121. The countersunk head is used for accommodating and hiding the head of the ejection bolt 2.

The embodiment is further configured as follows: the accommodating groove 13 and the circumferential limiting piece 3 are both of annular structures and are concentrically arranged with the central threaded hole. The annular structure of integral type is convenient for pack into and ejecting holding tank 13, also can improve the friction surface 31 simultaneously and by the stability of being contacted between the locking face, improve locking effect of moving.

The embodiment is further configured as follows: the friction surface 31 is formed by densely distributing a plurality of triangular grooves 311 to achieve effective anti-slip, anti-accidental rotation and anti-loosening effects.

The embodiment is further configured as follows: the four side position threaded holes 12 are uniformly arranged in a circle by taking the central threaded hole 11 as a circle center. This setting can improve the homogeneity of the whole atress of nut body 1 to and the homogeneity of the whole atress of the spacing piece of axial, thereby improve nut body 1's structural strength and locking not hard up effect.

Unless otherwise specified, in the present invention, if there is an orientation or positional relationship indicated by terms of "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., based on the orientation or positional relationship shown in the drawings, it is only for convenience of describing the present invention and simplifying the description, rather than to indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore, the terms describing orientation or positional relationship in the present invention are for illustrative purposes only, and should not be construed as limiting the present patent, specific meanings of the above terms can be understood by those of ordinary skill in the art in light of the specific circumstances in conjunction with the accompanying drawings.

Unless expressly stated or limited otherwise, the terms "disposed," "connected," and "connected" are used broadly and encompass, for example, being fixedly connected, detachably connected, or integrally connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that modifications and embellishments within the scope of the invention may occur to those skilled in the art without departing from the principle of the invention, and are considered to be within the scope of the invention.