CN1267796A - Bolt with thread in both long and short pitches and its matched part - Google Patents
Bolt with thread in both long and short pitches and its matched part Download PDFInfo
- Publication number
- CN1267796A CN1267796A CN 99115296 CN99115296A CN1267796A CN 1267796 A CN1267796 A CN 1267796A CN 99115296 CN99115296 CN 99115296 CN 99115296 A CN99115296 A CN 99115296A CN 1267796 A CN1267796 A CN 1267796A
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- thread
- screw rod
- screw
- pitch
- screwing unit
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Abstract
The present invention relates to the field of fastener, and includes a bolt and its matched part. The bolt has parallel threads in long and short pitches in the same direction and the matched part has parallel female threads matched with those in the bolt. The thread in long pitches may be used in fast tightening up and the thread with short pitches may be used for locking, so that present invention results in time saving.
Description
The present invention is a kind of screw rod and screwing unit thereof of improved large and small pitch screw, belongs to the threaded fastening device technical field.
Known screw rod and screwing unit thereof are that the screw thread of nut and the pitch of internal thread all are single usually.In order to guarantee the good of its self-locking property, generally all adopt less pitch.Yet because pitch is less than normal, often just make corresponding the slowing down of the travelling speed of screwing unit on screw rod, and consuming time more.
The purpose of this invention is to provide a kind of screw rod and screwing unit thereof of large and small pitch screw, this screw rod and screwing unit thereof can guarantee good self-locking property, thus can make again simultaneously screw rod and screwing unit between the two mobile speeding up save time.
Solution of the present invention is, with reference to accompanying drawing, provide a kind of big, the screw rod of fine pitch screw thread and screwing unit thereof, it is made up of screwing unit (1) and screw rod (2), wherein screw rod (2) has screw thread, screwing unit (1) has the internal thread that mates with the screw thread specification of screw rod (2), screwing unit (1) can with screw rod (2) screw thread socket, and screwing unit (1) can be gone up at screw rod (2) and do axially back and forth to rotate to move, improvements are, screw thread on the described screw rod (2) is steep-pitch thread (3) and a fine pitch screw thread (4) arranged side by side in the same way, and the internal thread of screwing unit (1) be with screw rod (2) on the big spiral shell square internal thread (5) arranged side by side in the same way and the fine pitch internal thread (6) of steep-pitch thread (3) arranged side by side in the same way and fine pitch screw thread (4) specification coupling.The screw rod of the large and small pitch screw of the present invention of Gou Chenging and screwing unit thereof are because it has steep-pitch thread arranged side by side in the same way and fine pitch screw thread simultaneously thus, bigger during work owing to the steep-pitch thread matching gap, can cooperate by steep-pitch thread earlier between the counterpart and be rotated in place, put in place the back since spiral shell square resistance increase, be screw rod between the counterpart with screwing unit between can turn to by cooperating rotation to continue to be shifted to reach tight lock between the fine pitch screw thread.Slowly reached many defectives consuming time thereby both overcome fine pitch screw thread rotation velocity of displacement, finally realized the purpose of tight lock again by the fine pitch screw thread.
Be further described below in conjunction with the screw rod and the screwing unit thereof of specific embodiment shown in the accompanying drawing large and small pitch screw of the present invention.
Fig. 1 is the screw rod of the large and small pitch screw of the present invention and the structural representation of a specific embodiment of screwing unit thereof;
Fig. 2 is connected on structural representation on the screw rod for the screwing unit thread bush;
Structural representation when Fig. 3 is applied to bolt for the present invention.
Among Fig. 1-3, wherein:
1-screwing unit 2-screw rod 3-steep-pitch thread
4-fine pitch screw thread 5-large screw pitch internal thread 6-fine pitch internal thread
With reference to accompanying drawing 1-2, the screwing unit (1) that mates with above-mentioned screw rod (2) specification that the bar that the screw rod of this embodiment's large and small pitch screw and screwing unit thereof comprise No. 45 steel profile car systems of drawing materials is directly done for the screw rod (2) of 20 millimeters of Φ and No. 45 steels of drawing materials.Wherein to get on the bus and be shaped on pitch be the fine pitch screw thread (4) that 6 millimeters steep-pitch thread (3) and pitch are 4 millimeters to screw rod (2), above-mentioned steep-pitch thread (3) and fine pitch screw thread (4) in the same way and train on screw rod (2), the internal thread on the above-mentioned screwing unit (1) then by with screw rod (2) on large and small pitch screw specification coupling equally in the same way and the large screw pitch internal thread (5) of train on screwing unit (1) constitute with fine pitch internal thread (6).The screw rod of the large and small pitch screw of this example and the trial-manufacture of sample of screwing unit through being applied to bolt thereof are on probation to be proved to be respond well, has fast rotational and puts in place, tightly locks the advantage of function admirable, saving of work and time.This sample bolt as shown in Figure 3, by the screw rod with large and small pitch screw arranged side by side in the same way (1) with have and the screwing unit (2) of the large and small pitch internal thread arranged side by side equally in the same way of the large and small pitch screw specification of screw rod (1) coupling screws socket and forms, 20 millimeters of the screw rod of bolt (1) bar footpath Φ, No. 45 shaped steel of material, long 6 millimeters of large screw pitch, long 4 millimeters of fine pitch, also draw materials No. 45 steels of the nut screwing spare of bolt (2) are done, 20 millimeters of screw aperture Φ, large and small pitch also is followed successively by 6 millimeters and 4 millimeters respectively.
Claims (1)
1, a kind of big, the screw rod of fine pitch screw thread and screwing unit thereof, it is made up of screwing unit (1) and screw rod (2), wherein screw rod (2) has screw thread, screwing unit (1) has the internal thread that mates with the screw thread specification of screw rod (2), screwing unit (1) can with screw rod (2) screw thread socket, and screwing unit (1) can be gone up at screw rod (2) and do axially back and forth to rotate to move, it is characterized in that, screw thread on the described screw rod (2) is steep-pitch thread (3) and a fine pitch screw thread (4) arranged side by side in the same way, and the internal thread of screwing unit (1) be with screw rod (2) on the big spiral shell square internal thread (5) arranged side by side in the same way and the fine pitch internal thread (6) of steep-pitch thread (3) arranged side by side in the same way and fine pitch screw thread (4) specification coupling.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99115296 CN1267796A (en) | 1999-03-23 | 1999-03-23 | Bolt with thread in both long and short pitches and its matched part |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99115296 CN1267796A (en) | 1999-03-23 | 1999-03-23 | Bolt with thread in both long and short pitches and its matched part |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1267796A true CN1267796A (en) | 2000-09-27 |
Family
ID=5278281
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 99115296 Pending CN1267796A (en) | 1999-03-23 | 1999-03-23 | Bolt with thread in both long and short pitches and its matched part |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1267796A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1306176C (en) * | 2002-12-18 | 2007-03-21 | 伊利诺斯工具公司 | Screw-thread fastener |
| CN103134670A (en) * | 2013-01-29 | 2013-06-05 | 中国核动力研究设计院 | Selection method for reactor kingbolt to screw in rotation speed value |
| CN114424107A (en) * | 2019-06-05 | 2022-04-29 | 夏尔特银斯公司D.B.A.涡流光学 | Diopter adjusting mechanism |
-
1999
- 1999-03-23 CN CN 99115296 patent/CN1267796A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1306176C (en) * | 2002-12-18 | 2007-03-21 | 伊利诺斯工具公司 | Screw-thread fastener |
| CN103134670A (en) * | 2013-01-29 | 2013-06-05 | 中国核动力研究设计院 | Selection method for reactor kingbolt to screw in rotation speed value |
| CN103134670B (en) * | 2013-01-29 | 2015-04-22 | 中国核动力研究设计院 | Selection method for reactor kingbolt to screw in rotation speed value |
| CN114424107A (en) * | 2019-06-05 | 2022-04-29 | 夏尔特银斯公司D.B.A.涡流光学 | Diopter adjusting mechanism |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |