CN201439785U

CN201439785U - Spiralock thread connection set

Info

Publication number: CN201439785U
Application number: CN2009200754319U
Authority: CN
Inventors: 顾茂众; 吴明然
Original assignee: Shanghai Detroit Precision Fastener Co Ltd
Current assignee: Shanghai Detroit Precision Fastener Co Ltd
Priority date: 2009-07-29
Filing date: 2009-07-29
Publication date: 2010-04-21
Anticipated expiration: 2019-07-29

Abstract

The utility model relates to a Spiralock thread connection set, which comprises a Spiralock female thread piece and a Spiralock male thread piece. When the thread pitch values of the male thread of a male thread bolt are taken respectively as 0.35, 0.5, 0.7, 0.8, 1, 1.25, 1.5, 1.75, 2, 2.5, 3, 3.5, 4, 4.5 and 5, the corresponding R average values of the radius of rounded root are taken respectively as 0.093, 0.132, 0.185, 0.164, 0.204, 0.256, 0.307, 0.358, 0.409, 0.511, 0.613, 0.716, 0.818, 0.92 and 1.022, wherein the unit of the thread pitch values and the R average values. Compared with the existing MJ thread and common thread Spiralock thread connection sets, the utility model has the advantages that the fatigue resistance performance and the tensile strength are better, and the requirements for the application places requiring high tensile strength, fatigue strength and anti-loosing performance are satisfied.

Description

Execute the pair that must the jail be threaded

Technical field

The utility model relates to a kind of pair that must the jail be threaded of executing.

Background technique

Execute the pair that must the jail be threaded and comprise that execute must firm internal thread part (for example nut or screw part) and threaded male component (as bolt), in case of necessity, also can further comprise packing ring.

The existing outside thread of executing bolt in the pair that must firm be threaded is divided into MJ outside thread and common outside thread according to model, and the tensile strength and the fatigue strength of these two kinds of screw threads are relatively poor; Can not satisfy some for tensile strength with fatigue strength has higher requirements and the needs that possess the application of anti-loosening property simultaneously.

The model utility content

The objective of the invention is to, executing of a kind of antifatigue type pair that must the jail be threaded is provided, to satisfy for tensile strength and fatigue strength has higher requirements and possess the needs of the application of anti-loosening property simultaneously.

The utility model adopts following technological scheme:

A kind of pair that must the jail be threaded of executing, comprise execute must firm internal thread part, threaded male component, the relation such as the following table of the externally threaded pitch of wherein said outside thread bolt and radius of rounded root R mean value:

Pitch (mm)	R mean value (mm)
Pitch (mm)	R mean value (mm)	0.35	0.093
0.5	0.132	0.35	0.093
0.5	0.132	0.7	0.185
0.8	0.164	0.7	0.185
0.8	0.164	1	0.204
1.25	0.256	1	0.204
1.25	0.256	1.5	0.307
1.75	0.358	1.5	0.307
1.75	0.358	2	0.409
2.5	0.511	2	0.409

Pitch (mm)	R mean value (mm)
Pitch (mm)	R mean value (mm)	3	0.613
3.5	0.716	3	0.613
3.5	0.716	4	0.818
4.5	0.92	4	0.818
4.5	0.92	5	1.022

Further, described executing must firm internal thread part be nut or screw part.

Further, described threaded male component is for having externally threaded part, as bolt, axial workpiece etc.

Execute the parafacies ratio that must the jail be threaded with existing MJ screw thread, regular screw threads, the utility model provides executes the pair that must the jail be threaded and has better anti-fatigue performance and tensile strength, satisfies for tensile strength and fatigue strength has higher requirements and possess the needs of the application of anti-loosening property simultaneously.

Further specify the utility model below in conjunction with drawings and Examples.

Description of drawings

Internal thread and outside thread that Fig. 1 executes among the secondary embodiment that must firm be threaded for the utility model screw partial schematic diagram;

Fig. 2 executes the outer and existing two kinds of externally threaded Bottom of Thread radius of arc figure of outside thread that must the jail be threaded among the secondary embodiment for the utility model;

Fig. 3 the utility model screw thread and MJ screw thread and regular screw threads radius of rounded root comparison diagram.

Embodiment

A kind of pair that must the jail be threaded of executing, comprise execute must firm internal thread part (nut or screw part), the outside thread bolt, wherein, the utility model screw thread (MJB) and MJ screw thread and the contrast of regular screw threads radius of rounded root as shown in Figure 3:

Pitch and outside thread radius of rounded root R mean value table

Pitch (mm)	MJB screw thread R mean value (mm)	MJ screw thread R mean value (mm)	Regular screw threads R mean value (mm)
Pitch (mm)	MJB screw thread R mean value (mm)	MJ screw thread R mean value (mm)	Regular screw threads R mean value (mm)	0.35	0.093	0.058	0.047
0.5	0.132	0.083	0.067	0.35	0.093	0.058	0.047
0.5	0.132	0.083	0.067	0.7	0.185	0.116	0.094
0.8	0.164	0.132	0.108	0.7	0.185	0.116	0.094

Pitch (mm)	MJB screw thread R mean value (mm)	MJ screw thread R mean value (mm)	Regular screw threads R mean value (mm)
Pitch (mm)	MJB screw thread R mean value (mm)	MJ screw thread R mean value (mm)	Regular screw threads R mean value (mm)	1	0.204	0.165	0.135
1.25	0.256	0.207	0.168	1	0.204	0.165	0.135
1.25	0.256	0.207	0.168	1.5	0.307	0.248	0.202
1.75	0.358	0.289	0.236	1.5	0.307	0.248	0.202
1.75	0.358	0.289	0.236	2	0.409	0.331	0.269
2.5	0.511	0.413	0.337	2	0.409	0.331	0.269
2.5	0.511	0.413	0.337	3	0.613	0.496	0.404
3.5	0.716	0.578	0.471	3	0.613	0.496	0.404
3.5	0.716	0.578	0.471	4	0.818	0.661	0.539
4.5	0.92	0.744	0.606	4	0.818	0.661	0.539
4.5	0.92	0.744	0.606	5	1.022	0.826	0.673

Because executing that the utility model provides must be threaded secondary screw thread path greater than common internal thread path and MJ internal thread path, so radius of rounded root of the present utility model can be greater than the radius of rounded root of regular screw threads and MJ screw thread in the jail.Therefore the utlity model has than MJ screw thread and the better anti-fatigue performance of regular screw threads.

Wherein, execute firm to be threaded secondary internal thread and outside thread in the present embodiment and screw partial schematic diagram as shown in Figure 1.

The Bottom of Thread radius of arc figure that draws in proportion that the utility model is executed the outside thread 1 that must the jail be threaded among the secondary embodiment and existing two kinds of outside threads (MJ outside thread 2 and common outside thread 3) as shown in Figure 2.As can be seen from Figure 2, the utility model is executed the pair that must the jail be threaded and is had outside thread 1 than circular arc at the bottom of the molar, at the bottom of its tooth circular arc greater than the MJ screw thread, its can only with execute and must screw by firm screw thread.

Under the different span situations of pitch P, to compare with existing two kinds of screw threads, it is as shown in the table that Bottom of Thread circular arc of the present utility model increases percentage:

The utility model screw bolt and MJ screw thread, regular screw threads bolt performance specifically are compared as follows table:

Above-described embodiment only is used to illustrate technological thought of the present utility model and characteristics, its purpose is to make those skilled in the art can understand content of the present utility model and implements according to this, can not only limit claim of the present utility model with present embodiment, be all equal variation or modifications of doing according to the spirit that the utility model disclosed, still drop in the claim of the present utility model.

Claims

1. execute the pair that must the jail be threaded for one kind, comprise execute must firm internal thread part, threaded male component, it is characterized in that: the relation such as the following table of the externally threaded pitch of described threaded male component and radius of rounded root R mean value:

Pitch R mean value 0.35 0.093 0.5 0.132 0.7 0.185 0.8 0.164 1 0.204 1.25 0.256 1.5 0.307 1.75 0.358 2 0.409 2.5 0.511 3 0.613 3.5 0.716 4 0.818 4.5 0.92 5 1.022

Wherein, the unit of pitch and R mean value is a millimeter.

2. the pair that must the jail be threaded of executing according to claim 1, it is characterized in that: described executing must firm internal thread part be nut or screw part.

3. the pair that must the jail be threaded of executing according to claim 2, it is characterized in that: described threaded male component is a bolt.