CN202280718U - Nut with chutes and metal insert - Google Patents
Nut with chutes and metal insert Download PDFInfo
- Publication number
- CN202280718U CN202280718U CN2011204234217U CN201120423421U CN202280718U CN 202280718 U CN202280718 U CN 202280718U CN 2011204234217 U CN2011204234217 U CN 2011204234217U CN 201120423421 U CN201120423421 U CN 201120423421U CN 202280718 U CN202280718 U CN 202280718U
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Abstract
The utility model discloses a nut with chutes and a metal insert, comprising a nut body and the metal insert with an internal thread, wherein the lower part of the nut body is of a cylindrical slotted body; three rhombohedral chutes are arranged at symmetrical positions on the outer circumference of the cylindrical slotted body; and the metal insert is provided with three rhombohedral extending bodies capable of being embedded into the rhombohedral chutes of the nut. The axial depth of each rhombohedral chute is equal to the thickness of the insert, and the metal insert and the cylindrical slotted body have the same depth, so that the nut can be effectively prevented from moving at the inner side of the nut along the direction of a screw rod. An acute angle alpha of a rhombus is larger than a helix angle beta of the internal thread of the nut. Due to different angles, the acute angle of the rhombus is larger than the helix angle of the internal thread of the nut, therefore, the dislocation movement lifting distance between the nut and the insert is larger than the lifting distance of the internal thread, and furthermore, a fastener in strong vibration or dynamic load can be effectively locked. The metal insert and a slotted nut are combined in the structure, so that looseness caused by vibration and dynamic load are effectively prevented; compared with the prior art, the nut is easy to mount and dismount; and the safety performance of the screw rod is improved because of no need of drilling on the screw rod, and the screw rod can be repeatedly used many times.
Description
Technical field
The utility model relates to a kind of skewed slot metal insert nut.
Background technique
The regular screw threads fastening piece is loosening in order to prevent to tighten back nut, and the main method that adopts has double nut to tighten, add elastic washer, adds cotter pin, locked spacer, series connection steel wire, nylon inserts, nut fluting etc.The method that double nut is tightened still can be become flexible in the strong occasion of vibrations, frees nut when serious and comes off, owing to increased a nut, waste material need increase the length of bolt simultaneously.The relaxation effect that adds elastic washer is not good, need on screw rod or nut, carry out turning processing and add cotter pin, locked spacer and series connection steel wire, and technology is loaded down with trivial details.Nylon inserts anti-loose method repeated disassembled and assembled occasion is easy to damage, and it is locking that some producer adopts metal insert to carry out, but since problems such as structural design, poor effect.Slotted nut is meant and above hexagon nut, processes groove; So that from the groove of nut, insert in the hole of screw rod cotter pin; Prevent the automatic Hui Song of nut, be mainly used in occasion, portal owing to need on screw rod, process with oscillating load or alternate load; Complex process, and reduced screw strength.
Publication number is the slotted nut that the patent of CN 201016354Y discloses a kind of rotatable adjustment included angle; Be made up of parts such as nut, tubular fluting body, straight pin, springs, in the using process, the outstanding thin end of straight pin inserts in the circular hole of spring; Spring, straight pin are respectively charged in the circular hole of justifying in the nut on the shrinkage pool plane; The rotatable adjustment of the groove of this slotted nut angle during use, is installed on the screw rod that is equipped with pin-and-hole; Through the angle of backward rotation adjustment fluting body, the cooperation with the screw rod pin-and-hole of can conveniently slotting.Still there are problems such as screw rod punching in this structure, and technology is loaded down with trivial details, and the easy stress that produces in pin-and-hole place is concentrated under the high load vibration environment, causes the screw rod fracture.
Summary of the invention
The utility model provides a kind of simple in structure, reasonable in design to above-mentioned situation, and anti-loosing effect is good, can dismantle long service life, reliable and stable locking skewed slot inserts nut repeatedly.
It is this a kind of skewed slot metal insert nut that the utility model solves the problems of the technologies described above the technological scheme that is adopted; Comprise nut body and internal thread metal insert; The nut body bottom is a tubular fluting body; The tubular external circumference symmetrical position of slotting has 3 rhombus skewed slots, and metal insert has 3 rhombuses and stretches out body, but the rhombus skewed slot of insert nut.
As preferably, the described rhombus skewed slot of the utility model axial depth equals inserts thickness, and metal insert is identical with the tubular fluting body degree of depth, can effectively stop inserts to move along the screw rod direction in the nut inboard.
As preferably, the said rhombus sharp angle of the utility model is greater than nut inner thread lead angle β.Because the difference of angle, rhombus acute angle be greater than the nut inner thread lead angle, so nut and inserts changing of the relative positions lifting apart from greater than screw thread lifting distance, thereby can effectively be locked the fastening piece that is in high vibration or the dynamic load.
The utility model is compared with existing technology and is had the following advantages, and the rhombus skewed slot axial depth on the nut equals inserts thickness, can effectively stop inserts to move along the screw rod direction in the nut inboard.Rhombus acute angle on the nut is greater than the nut inner thread lead angle, thereby can effectively lock the fastening piece that is in high vibration or the dynamic load, improved the anti-loosening property of fastening piece.Simultaneously, need not punching on the screw rod, improved the Safety performance of screw rod; Metal insert and slotted nut are united use, more effectively prevent because vibration is become flexible with dynamic load causes; The utility model need not parts such as straight pin, and installing/dismounting is easy, and can be repeatedly used.
Description of drawings
Fig. 1 is a kind of structural representation of the utility model.
Fig. 2 is a kind of structural representation of skewed slot nut body.
Fig. 3 is a kind of half section structural representation of skewed slot nut body.
Fig. 4 is a kind of structural representation of metal insert body.
Label declaration: skewed slot nut 1, metal insert 2, nut body 3, rhombus skewed slot 4, tubular fluting body 5, nut inner thread 6, inserts body 7, rhombus stretch out body 8 and inserts internal thread 9.
Embodiment
Below in conjunction with embodiment the utility model is done further detailed description.
Shown in Fig. 1 to 6, present embodiment is made up of skewed slot nut 1, metal insert 2.Wherein skewed slot nut 1 comprises nut body 3, rhombus skewed slot 4, tubular fluting body 5 and nut inner thread 6.Metal insert 2 comprises that inserts body 7, rhombus stretch out body 8 and inserts internal thread 9.
During assembling, earlier metal insert 2 is embedded the tubular fluting body 5 of skewed slot nuts 1, and rhombus is stretched out body 8 buckle in the rhombus skewed slot 4, the inserts nut after the combination is screwed on the screw rod.When tightening, skewed slot nut 2 promotes nut and inserts is tightened simultaneously, because rhombus skewed slot 4 axial depth equal the thickness of metal insert 2, and metal insert 2 is identical with tubular fluting body 5 degree of depth, can effectively stop inserts to move along the screw rod direction in the nut inboard.When vibrations take place in the mechanism after tightening; Because the rhombus acute angle of the rhombus skewed slot 4 on the skewed slot nut 1 is greater than nut inner thread 6 and inserts internal thread 9 lead angles; Nut and inserts changing of the relative positions lifting distance are greater than screw thread lifting distance; Under high vibration or dynamic load condition, can realize effective locking of skewed slot nut.During the utility model assembling, need not punching on the screw rod, improved the Safety performance of screw rod; Metal insert and slotted nut are united use, more effectively prevent because vibration is become flexible with dynamic load causes; The utility model need not parts such as straight pin, and installing/dismounting is easy, and can be repeatedly used.
In addition, need to prove, the specific embodiment described in this specification, its zero, the shape of parts, institute's title of being named etc. can be different.Allly conceive equivalence or the simple change that described structure, characteristic and principle are done, include in the protection domain of this patent according to the utility model.The utility model person of ordinary skill in the field can make various modifications or replenishes or adopt similar mode to substitute described specific embodiment; Only otherwise depart from the structure of the utility model or surmount the defined scope of these claims, all should belong to the protection domain of the utility model.
Claims (4)
1. a skewed slot metal insert nut comprises nut body and internal thread metal insert.
2. skewed slot metal insert nut according to claim 1; It is characterized in that: said nut body bottom is a tubular fluting body; The tubular external circumference symmetrical position of slotting has 3 rhombus skewed slots, and metal insert has 3 rhombuses and stretches out body, but the rhombus skewed slot of insert nut.
3. skewed slot metal insert nut according to claim 2 is characterized in that: said rhombus skewed slot axial depth equals inserts thickness, and metal insert is identical with the tubular fluting body degree of depth.
4. skewed slot metal insert nut according to claim 1 is characterized in that: described rhombus acute angle is greater than the nut inner thread lead angle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204234217U CN202280718U (en) | 2011-10-31 | 2011-10-31 | Nut with chutes and metal insert |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204234217U CN202280718U (en) | 2011-10-31 | 2011-10-31 | Nut with chutes and metal insert |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202280718U true CN202280718U (en) | 2012-06-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204234217U Expired - Fee Related CN202280718U (en) | 2011-10-31 | 2011-10-31 | Nut with chutes and metal insert |
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| CN (1) | CN202280718U (en) |
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