CN215293203U

CN215293203U - Nut with anti-drop structure

Info

Publication number: CN215293203U
Application number: CN202120623693.5U
Authority: CN
Inventors: 黄宜宗; 黄永柱
Original assignee: Kunshan Kairong Precise Mechanical & Electrical Co ltd
Current assignee: Kunshan Kairong Precise Mechanical & Electrical Co ltd
Priority date: 2021-03-29
Filing date: 2021-03-29
Publication date: 2021-12-24
Anticipated expiration: 2031-03-29

Abstract

The utility model discloses a nut with anti-drop structure. It includes the nut body, its inside internal thread and threaded connection have fixing bolt, fixing bolt is last be equipped with internal thread assorted external screw thread, the top of nut body is equipped with a plurality of spout, be equipped with the limiting plate rather than matcing in the spout, the top of limiting plate extends to the spout outside, be equipped with the screw hole corresponding with the limiting plate on the lateral wall of nut body, the limiting plate is seted up the spacing hole corresponding with screw hole position towards one side of screw hole, screw hole internal thread is connected with limiting bolt, limiting bolt keeps away from the one end of its head insert spacing downthehole and with the interior diapire butt in spacing hole, one side fixedly connected with at limiting plate top is towards the lug that nut body axis one end extended, when limiting bolt screws up in the screw hole, the lug removes to external screw thread looks butt. The nut is not easy to loosen, and the fixing effect on the parts is improved.

Description

Nut with anti-drop structure

Technical Field

The utility model relates to a nut field, especially a nut with anti-drop structure.

Background

The nut is a nut, is screwed together with a bolt or a screw rod to play a fastening role, is an element which is necessary for all production and manufacturing machines, is divided into carbon steel, stainless steel, nonferrous metal and the like according to different materials, has the working principle of self-locking by adopting the friction force between the nut and the complex acid, but the reliability of the self-locking in dynamic load is reduced, most of the existing nuts in the market do not have anti-falling structures, and the nut is easy to loosen if in the working environment of heavy load and vibration, thereby influencing the fixation of the part.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a nut with anti-drop structure for the difficult not hard up condition that appears of nut has improved the fixed effect to the part.

In order to solve the technical problem, the utility model discloses a following technical scheme:

a nut with an anti-drop structure comprises a nut body, wherein an internal thread is arranged inside the nut body, a fixing bolt is in threaded connection with the internal thread, an external thread matched with the internal thread is arranged on the fixing bolt, a plurality of sliding grooves are formed in the top of the nut body, limiting plates matched with the sliding grooves are arranged in the sliding grooves, the top ends of the limiting plates extend to the outside of the sliding grooves, a threaded hole corresponding to the position of the limiting plate is formed in the outer side wall of the nut body, a limiting hole corresponding to the position of the threaded hole is formed in one side, facing the threaded hole, of each limiting plate, a limiting bolt is in threaded connection with the threaded hole, one end, away from the head, of each limiting bolt is inserted into the corresponding limiting hole and is abutted against the inner bottom wall of the corresponding limiting hole, a lug extending towards one end of the axis of the nut body is fixedly connected to one side of the top of the limiting plate, when the limiting bolt is screwed in the threaded hole, the lug moves to abut against the external thread.

Preferably, one side of the convex block facing the axis of the nut body is fixedly provided with a limiting thread matched with the external thread.

Preferably, the sliding grooves are arranged in two numbers, and the two sliding grooves are symmetrically arranged along the central axis of the nut body.

Preferably, the bump and the limiting plate are of an integrally formed structure.

Preferably, the internal thread is a 30-degree wedge-shaped anti-loosening thread, and the thread form structure of the internal thread is that the thread root is provided with a wedge-shaped inclined plane which forms an angle of 30 degrees with the thread axis.

Compared with the prior art, the utility model discloses an useful part lies in:

1) the utility model provides a nut with an anti-drop structure, which makes the nut not easy to loose and improves the fixing effect to the parts;

2) the nut is characterized in that an internal thread is arranged inside the nut body, a fixing bolt is connected with the internal thread through a thread, an external thread matched with the internal thread is arranged on the fixing bolt, a plurality of sliding grooves are arranged at the top of the nut body, limiting plates matched with the sliding grooves are arranged in the sliding grooves, the top end of each limiting plate extends to the outside of the corresponding sliding groove, a threaded hole corresponding to the position of each limiting plate is arranged on the outer side wall of the nut body, a limiting hole corresponding to the position of the corresponding threaded hole is arranged on one side, facing the threaded hole, of each limiting plate, a limiting bolt is connected with the internal thread of each threaded hole, one end, far away from the head of the limiting bolt, of each limiting bolt is inserted into each limiting hole and is abutted against the inner bottom wall of each limiting hole, a lug extending towards one end of the axis of the nut body is fixedly connected to one side of the top of each limiting plate, the fixing bolt and the nut are firstly used for fixing a part during operation, and then the limiting bolt is screwed in the threaded holes, at the moment, one end of the fixing bolt, which is far away from the head, pushes the limiting plate tightly in the sliding groove, the lug moves to abut against the external thread, and the movement of the nut in the vertical direction is limited by the arrangement of the lug, so that the nut is not easy to loosen, and the fixing effect on parts is improved;

3) the limiting thread matched with the external thread is fixedly arranged on one side, facing the axis of the nut body, of the bump, and the movement of the nut body is further limited due to the arrangement of the limiting thread, so that the nut is not easy to loosen, and the fixing effect of the part is improved;

4) the two sliding grooves are symmetrically arranged along the central axis of the nut body, the two sliding grooves are correspondingly provided with the two limiting plates, the two limiting plates are correspondingly provided with the two convex blocks, the two convex blocks can be arranged to well limit the looseness of the nut, and the fixing effect on the part is improved;

5) the lug and the limiting plate are arranged into an integrally formed structure, so that the structural strength between the lug and the limiting plate is improved, and the effect of limiting the loosening of the nut is improved;

6) through setting up the internal thread to 30 wedge locking screw, set up internal thread profile of tooth structure to have one to be 30 wedge inclined planes with the screw axis at the bottom of the thread, the setting up of wedge locking screw has further reduced the not hard up condition of nut appearance, has guaranteed the fixed effect to the part.

Drawings

Fig. 1 is a schematic overall structure diagram of an embodiment of the present invention;

fig. 2 is a schematic partial structural diagram of an embodiment of the present invention;

fig. 3 is a schematic view of a partial structure of an embodiment of the present invention;

fig. 4 is a schematic view of a partial structure according to an embodiment of the present invention.

The meaning of the reference numerals: 1. a nut body; 2. fixing the bolt; 3. an internal thread; 4. an external thread; 5. a chute; 6. a limiting plate; 7. a limiting hole; 8. a threaded hole; 9. a limit bolt; 10. a bump; 11. and limiting screw threads.

The present invention will be further described with reference to the accompanying drawings and the detailed description.

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 "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships 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 and operated in a specific orientation, and thus, should not be construed as limiting the present invention; the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; furthermore, unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, as they may be fixedly connected, detachably connected, or integrally connected, for example; 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.

The embodiment of the utility model provides a: a nut with an anti-drop structure is shown in figures 1 to 3 and comprises a nut body 1, wherein an internal thread 3 is arranged inside the nut body 1 and is in threaded connection with a fixing bolt 2, an external thread 4 matched with the internal thread 3 is arranged on the fixing bolt 2, a plurality of sliding chutes 5 are formed in the top of the nut body 1, limiting plates 6 matched with the sliding chutes 5 are arranged in the sliding chutes 5, the top ends of the limiting plates 6 extend to the outside of the sliding chutes 5, threaded holes 8 corresponding to the positions of the limiting plates 6 are formed in the outer side wall of the nut body 1, limiting holes 7 corresponding to the positions of the threaded holes 8 are formed in one side, facing the threaded holes 8, of the limiting plates 6, the internal thread 3 of the threaded holes 8 is connected with a limiting bolt 9, one end, far away from the head of the limiting bolt 9, of the end is inserted into the limiting holes 7 and is abutted to the inner bottom wall of the limiting holes 7, one side fixedly connected with at 6 tops of limiting plate is towards lug 10 that 1 axis one end of nut body extended, works as when limit bolt 9 is screwed up in screw hole 8, lug 10 removes to 3 looks butt of external screw thread, when the operation, uses fixing bolt 2 and nut to fix the part earlier, screws up limit bolt 9 in screw hole 8 afterwards, and the one end that the head was kept away from to fixing bolt 2 this moment is tight in spout 5 with limiting plate 6 top, and lug 10 then removes to 4 looks butt of external screw thread, and the setting of lug 10 has restricted the removal of 1 vertical direction of nut body for the difficult not hard up condition that appears of nut has improved the fixed effect to the part.

Lug 10 towards one side of 1 axis of nut body fixed be provided with external screw thread 4 assorted limit thread 11, limit thread 11 set up further restriction nut body 1's removal for the difficult not hard up condition that appears of nut has improved the fixed effect to the part.

Spout 5 is provided with two, two spout 5 sets up along the axis symmetry of nut body 1, and two spout 5 correspond there are two limiting plates 6, and two limiting plates 6 correspond and have two lugs 10, and the setting of two lugs 10 can be fine restriction nut not hard up, has improved the fixed effect to the part.

Lug 10 and limiting plate 6 are integrated into one piece structure, and integrated into one piece's structure setting has improved the structural strength between lug 10 and limiting plate 6, has improved the not hard up effect of restriction nut simultaneously.

Internal thread 3 is 30 wedge locking screw, the thread form structure of internal thread 3 has one to be 30 wedge inclined planes with the screw axis for the screw thread root, sets up the thread form structure of internal thread 3 and has one to be 30 wedge inclined planes with the screw axis for the screw thread root, and the setting up of wedge locking screw has further reduced the not hard up condition of nut appearance, has guaranteed the fixed effect to the part.

The utility model discloses a theory of operation:

when the operation, use fixing bolt 2 and nut earlier to fix the part, screw up spacing bolt 9 in screw hole 8 afterwards, fixing bolt 2 keeps away from the one end of head tightly limiting plate 6 top in spout 5 this moment, and lug 10 then remove to the top and looks butt with fixing bolt 2 head, lug 10 set up the removal of having restricted 1 vertical direction of nut body for the difficult not hard up condition that appears of nut has improved the fixed effect to the part.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications and variations can be made in the embodiments or in part of the technical features of the embodiments without departing from the spirit and the scope of the invention.

Claims

1. The nut with the anti-falling structure is characterized by comprising a nut body (1), wherein an internal thread (3) is arranged inside the nut body (1) and is connected with a fixing bolt (2) through a thread, an external thread (4) matched with the internal thread (3) is arranged on the fixing bolt (2), a plurality of sliding grooves (5) are formed in the top of the nut body (1), limiting plates (6) matched with the sliding grooves (5) are arranged in the sliding grooves (5), the top ends of the limiting plates (6) extend to the outside of the sliding grooves (5), threaded holes (8) corresponding to the positions of the limiting plates (6) are formed in the outer side wall of the nut body (1), limiting holes (7) corresponding to the positions of the threaded holes (8) are formed in one side, facing the threaded holes (8), of the limiting plates (6), the internal thread (3) of the threaded holes (8) is connected with limiting bolts (9), spacing bolt (9) keep away from the one end of its head insert in spacing hole (7) and with the interior diapire butt of spacing hole (7), one side fixedly connected with at limiting plate (6) top is towards lug (10) that nut body (1) axis one end extended, works as when spacing bolt (9) are screwed up in screw hole (8), lug (10) remove to external screw thread (4) looks butt.

2. The nut with the anti-drop structure according to claim 1, characterized in that a limit thread (11) matched with the external thread (4) is fixedly arranged on one side of the projection (10) facing the axis of the nut body (1).

3. The nut with the drop-preventing structure as claimed in claim 1, wherein there are two said sliding grooves (5), and two said sliding grooves (5) are symmetrically arranged along the central axis of the nut body (1).

4. The nut with the anti-drop structure as claimed in claim 1, wherein the protrusion (10) and the limit plate (6) are of an integral structure.

5. The nut with the drop-preventing structure as claimed in claim 1, wherein said internal thread (3) is a 30 ° wedge-shaped anti-loose thread, and said internal thread (3) has a profile structure in which a thread root has a wedge-shaped slope of 30 ° with respect to a thread axis.