CN1101703A

CN1101703A - Screw and nut for pressing or micro adjustion

Info

Publication number: CN1101703A
Application number: CN 93118462
Authority: CN
Inventors: 杨秦中
Original assignee: Individual
Current assignee: Individual
Priority date: 1993-10-09
Filing date: 1993-10-09
Publication date: 1995-04-19

Abstract

The invention provides a modified screw by an additional threaded portion at the screw head at a place not interfering the spanner operation. This additional threaded portion is made with a smaller pitch so as to provide fixing or adjusting function in conjunction with the auxiliary nut.

Description

Screw and nut for pressing or micro adjustion

The present invention relates to a kind of screw and nut of compressing or finely tuning of being used to.

Occasion such as traditional screw and nut is widely used in mechanical connection, compress.In actual use, people wish to have more laborsaving and screw and nut that have the Precision trimming function, and the standard mechanical Component can be more convenient to use, flexible extremely widely to make this application.

The purpose of this invention is to provide a kind of screw and nut of compressing or finely tuning of being used to.

The present invention is achieved in that its screw, nut keep original sun (outward) screw thread, the moon (interior) screw thread, and the various structure divisions (as outer polygonal, interior concave polygon, recessed cross, in-line, star) of supply instrument coupling to drive its rotation, it is characterized in that: do not interfering above-mentioned 2 tools coupling to set up second thread set of a segment length with the screw head that drives its rotation, and the more original screw thread of the thread pitch of this second screw thread is little, so that compress or fine adjustment function in conjunction with auxiliary nut.

Of the present invention simple in structure, practical, standardization level is high, is a kind of screw and nut group with fine adjustment function of compressing with simple and feasible.

Introduce the present invention and a plurality of embodiment thereof in detail below in conjunction with accompanying drawing.

Fig. 1 is that screw with outer-hexagonal driving head adds the schematic perspective view that compresses or finely tune screw thread and gland nut thereof than fine pitch.

Fig. 2 is the planimetric map of Fig. 1.

The nut group schematic perspective view of Fig. 3 for directly compressing.

Fig. 4 is the planimetric map of Fig. 3.

Fig. 5 is the hexagonal screw schematic perspective view of indent for the head of double step screw thread shown in Figure 1.

Fig. 6 is the planimetric map of Fig. 5.

Fig. 7 is the screw schematic perspective view of a word translot for the head of double step screw thread shown in Figure 1.

Fig. 8 is the screw schematic perspective view of cross recess for the head of double step screw thread shown in Figure 1.

Fig. 9 is the screw schematic perspective view of star-shaped groove for the head of double step screw thread shown in Figure 1.

As shown in Figure 1 and Figure 2 be to have the outer-hexagonal driving head among the present invention and add the less screw that compresses and finely tune screw thread of one section pitch and the schematic perspective view of gland nut thereof.Wherein screw body 100 has standard thread, and extends to a side, and its end is provided with hexagon nut 102, and it is big and pitch is less compresses and finely tune thread section 101 to have one section diameter on screw body 100.Can compress interconnect function normally by above-mentioned standard thread, and nationality helps auxiliary nut 103 just can compress or fine adjustment function.

Fig. 3, shown in Figure 4 be the nut group embodiment who directly compresses.Its structure characteristic is: the outer periphery 202 of nut group is multiaspect shape (promptly at least two face more than) for driving its rotation, its endoporus has standard female 200, to be coupled with screw, its downside extends the secondary segment of big (or less) of one section diameter, the screw thread 201 that has less pitch on it is so that cooperate auxiliary nut 203 to compress or fine adjustment function.Wherein auxiliary nut 203 has the internal thread with above-mentioned threads engaged than fine pitch.

Fig. 5, shown in Figure 6 be that screw, its head of double step screw thread is the embodiment of indent hexagon ring, just the hexagon driving head among Fig. 1 is changed into and have interior hexagonal shrinkage pool 302, to accept the driving of Allen wrench, wherein compress and finely tune screw thread 301, the effect of standard thread 300 and auxiliary nut 303, structure are all with shown in Figure 1 identical.

That shown in Figure 7 is the embodiment of the head of the sort of double step threaded screw of Fig. 1 for " one " font translot, except that screw head has " one " word translot for the word screwdriver rotation driving, remaining compresses and adjusts with the structure of screw thread and auxiliary nut identical with Fig. 1.

That shown in Figure 8 is the embodiment of the head of the sort of double step threaded screw of Fig. 1 for " ten " word groove, and except that screw head has " ten " word groove for the cross screwdriver rotation driving, remaining compresses and adjust with the structure of screw thread and auxiliary nut identical with Fig. 1.

The head of the sort of double step threaded screw of Fig. 1 that shown in Figure 9 is is the embodiment of star-shaped groove, and except that screw head has star-shaped groove drives for the rotation of star screwdriver, remaining compresses and adjust with the structure of screw thread and auxiliary nut identical with Fig. 1.

Above-mentioned various screw terminal and nut all are example explanation with the hexagon, and in actual applications, the utility model can be suitable for the various arbitrary shapes that are used to drive its rotation in lead screw head outside or endoporus or the nut.

Claims

1, a kind of screw and nut of compressing or finely tuning of being used to, its screw, nut keep original sun (outward) screw thread, the moon (interior) screw thread, and the various structure divisions (as outer polygonal, interior concave polygon, recessed cross, in-line, star) of supply instrument coupling to drive its rotation, it is characterized in that: do not interfering above-mentioned 2 tools coupling to set up second thread set of a segment length with the screw head that drives its rotation, and the more original screw thread of the thread pitch of this second screw thread is little, so that compress or fine adjustment function in conjunction with auxiliary nut.

2, the screw and nut that compresses or finely tune of being used to as claimed in claim 1, it is characterized in that: above-mentionedly have the outer-hexagonal driving head, add than the screw of the screw thread of fine pitch and be made up of following part again: screw body (100) has standard thread and extends to a side, it is big and pitch is less compresses or finely tune a thread section (101) and a upwardly extending hexagon nut (102) to have one section diameter on the body, the external diameter of this hexagon nut can greater than less than or equal the above-mentioned thread section external diameter that compresses or finely tune; Have above-mentioned auxiliary nut (103), compress or finely tune thread section (101) for being combined on epimere than fine pitch.

3, the screw and nut that compresses or finely tune of being used to as claimed in claim 1, it is characterized in that: above-mentioned have the screw thread that directly compresses and add again than the nut of minor thread and be made up of following part: the outer periphery of nut (202) are multiaspect shape, its endoporus has standard female (200), its side is extended the secondary segment of big (or less) of one section diameter, has screw thread (201) on it than fine pitch, so that cooperate auxiliary nut (203) to compress or finely tune, auxiliary nut (203) has the internal thread with above-mentioned threads engaged than fine pitch.

4, the screw and nut that compresses or finely tune of being used to as claimed in claim 1, it is characterized in that: this screw head with double step screw thread can be indent hexagon, " one " word translot, " ten " word groove or star-shaped groove.