CN201166034Y - Indent tightening structure stud - Google Patents
Indent tightening structure stud Download PDFInfo
- Publication number
- CN201166034Y CN201166034Y CNU2007200889105U CN200720088910U CN201166034Y CN 201166034 Y CN201166034 Y CN 201166034Y CN U2007200889105 U CNU2007200889105 U CN U2007200889105U CN 200720088910 U CN200720088910 U CN 200720088910U CN 201166034 Y CN201166034 Y CN 201166034Y
- Authority
- CN
- China
- Prior art keywords
- screw bolt
- double
- indent
- blind hole
- stud
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Abstract
A stud with an inward-concave screwing structure is characterized in that an inner groove or an inward-concave blind hole which can be matched with a screwing tool is arranged at the end part of one end of a common stud assembling and twisting device. The utility model discloses can directly use the tightening tool to screw up at the inner groovy or the indent blind hole of double-screw bolt tip during the assembly, reduce workman intensity of labour, improve the assembly efficiency of double-screw bolt. The control of the assembly torque of the stud screwed into the threaded hole can be realized by applying a torque control tool, and the assembly precision of the stud is improved.
Description
Technical field
The utility model relates to the threaded fastener technology field, relates in particular to a kind of indent and tightens the structure double-screw bolt.
Background technique
In mechanical coupling and automobile critical piece assembling connection, double-screw bolt is widely used.See Fig. 1 double-screw bolt product structure figure for details.
When double-screw bolt connects in assembling, need earlier double-screw bolt to be screwed in the tapped hole of an end coupling.See for details shown in Fig. 2 double-screw bolt assembly structure figure.
According to China Standard Press's in March, 2006 front page " fastening piece standard implementation guide ": an end of double-screw bolt utilizes interference or other method to be screwed into and to be securely fixed in the endoporus of workpiece substrate, and matrix is linked by double-screw bolt and nut.
The NBS relevant with the double-screw bolt product has GB897, GB898, GB899, GB900, GB901 at present.
Because the place of turning round is not all executed on the double-screw bolt surface of these GB regulations at present, causes double-screw bolt can only be screwed into tapped hole with hand-held double-screw bolt when being screwed into tapped hole.
Cooperate tighter occasion with tapped hole for double-screw bolt, these double-screw bolts can't directly be used tightening tool; Be screwed into the occasion that tapped hole moment has requirement for double-screw bolt, these double-screw bolts also can't directly be used and turn round the instrument assembling surely.Cause double-screw bolt assembling, the dismounting of present this form very inconvenient, efficiency of assembling is lower.
As in the assembling of DCI 11 motors, the moment that double-screw bolt is screwed into tapped hole all has clear and definite requirement.
Cooperate tighter occasion with tapped hole for double-screw bolt, particularly double-screw bolt is screwed into the occasion that tapped hole moment has requirement, the double-screw bolt of present this form can only adopt other method to carry out indirect tightening and Torque Control, as adopt double nut to assist and tighten, earlier execute the section of turning round and be screwed into two nuts at double-screw bolt, tighten the nut of pre-installing on the double-screw bolt during assembling, treat double nut to be backed out from double-screw bolt after double-screw bolt is screwed into tapped hole again, such assembling is very loaded down with trivial details.And when double nut is back-outed, through regular meeting that double-screw bolt is loosening, destroy the screw-down torque of double-screw bolt, so influenced the control accuracy of double-screw bolt assembly quality and assembling moment.
The model utility content
The purpose of this utility model is in order to solve the deficiency that the above-mentioned background technology exists, to propose a kind of indent that can adopt tightening tool to carry out tightening operation and tighten the structure double-screw bolt, make its assembly precision that can improve double-screw bolt and efficient, reducing labor strength.
For achieving the above object, the utility model adopts following technological scheme: a kind of indent is tightened the structure double-screw bolt, it is characterized in that this double-screw bolt is the inner groovy or the indent blind hole that can cooperate with tightening tool the end face setting that an end of turning round is executed in common double-screw bolt assembling.
Described inner groovy can be straight groove.
Described inner groovy can also be cross recess.
Described indent blind hole internal surface can be quadrangular face, six prismatic surfaces, eight prismatic surfaces or 12 prismatic surfaces, and each prismatic surface of above-mentioned indent blind hole evenly distributes at circumferencial direction, and symmetrical in twos and stud shaft line parallel.
The cross section of described indent blind hole internal surface can also be various colored shapes.
The utility model is simple in structure, easy to use, especially adopt the inner groovy or the indent blind hole that can cooperate with tightening tool, it can in directly using, the inner groovy of stud end or indent blind hole be tightened by tightening tools such as spanner, screw-driver in when assembling, reduce labor strength, improve assembling, the removal efficiency of double-screw bolt.Simultaneously, can also use control and turn round the control that instrument realization double-screw bolt is screwed into the assembling moment of tapped hole, improve the assembly precision of double-screw bolt.
Description of drawings
Fig. 1 is existing common double-screw bolt product structure figure.
Fig. 2 is existing common double-screw bolt assembly structure figure.
Fig. 3 is the structural drawing of inner groovy double-screw bolt product described in the utility model.
Fig. 4 is the structural drawing of indent blind hole double-screw bolt product described in the utility model.
Fig. 5 is Fig. 4 left view.
Embodiment
With reference to Fig. 3 and Fig. 4, double-screw bolt described in the utility model is at the end face 2 that an end of turning round is executed in 1 assembling of common double-screw bolt the inner groovy 3 or the indent blind hole 4 that can cooperate with tightening tool (as: head of interior spanner, screw-driver edge of a knife position) to be set.Described inner groovy 3 can be executed the flute profile of turning round for straight groove or cross recess etc.Described indent blind hole 4 internal surfaces can be quadrangular face, six prismatic surfaces, eight prismatic surfaces or 12 prismatic surfaces (Fig. 4 is six prismatic surfaces), and each prismatic surface of above-mentioned indent blind hole 4 evenly distributes at circumferencial direction, and symmetrical in twos and double-screw bolt 1 parallel axes.The cross section of described indent blind hole 4 internal surfaces can also can be executed the colored shape of turning round for quincunx grade.
Can open straight groove or cross recess at the double-screw bolt end face for the small dimension double-screw bolt, both can open straight groove or cross recess, also can open the indent blind hole of other geometrical shapies such as Nei Sijiao, interior hexagonal, the interior hexagonal of flower type at the double-screw bolt end face for the double-screw bolt of big specification.
Double-screw bolt described in the utility model is convenient to use existing tightening tool commonly used because of its inner groovy 3 or indent blind hole 4 and is tightened, and therefore when double-screw bolt assembles, can use tightening tools such as screw-driver or interior spanner to tighten double-screw bolt very easily.Its effect is very similar tightens screw with screw-driver, very convenient, has also improved assembling, the removal efficiency of double-screw bolt simultaneously.Be screwed into the occasion that tapped hole moment has requirement for double-screw bolt, the also very convenient application of turning round instrument surely of the utility model can directly be used and turn round instrument surely and tighten, and improves the assembly quality of double-screw bolt.
Claims (5)
1, a kind of indent is tightened the structure double-screw bolt, it is characterized in that this double-screw bolt is the inner groovy or the indent blind hole that can cooperate with tightening tool the end face setting that an end of turning round is executed in common double-screw bolt assembling.
2, a kind of indent according to claim 1 is tightened the structure double-screw bolt, it is characterized in that described inner groovy is a straight groove.
3, a kind of indent according to claim 1 is tightened the structure double-screw bolt, it is characterized in that described inner groovy is a cross recess.
4, a kind of indent according to claim 1 is tightened the structure double-screw bolt, it is characterized in that described indent blind hole internal surface is quadrangular face, six prismatic surfaces, eight prismatic surfaces or 12 prismatic surfaces, each prismatic surface of above-mentioned indent blind hole evenly distributes at circumferencial direction, and symmetrical in twos and stud shaft line parallel.
5, a kind of indent according to claim 1 is tightened the structure double-screw bolt, and the cross section that it is characterized in that described indent blind hole internal surface is quincunx.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200889105U CN201166034Y (en) | 2007-12-11 | 2007-12-11 | Indent tightening structure stud |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200889105U CN201166034Y (en) | 2007-12-11 | 2007-12-11 | Indent tightening structure stud |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201166034Y true CN201166034Y (en) | 2008-12-17 |
Family
ID=40191421
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200889105U Expired - Lifetime CN201166034Y (en) | 2007-12-11 | 2007-12-11 | Indent tightening structure stud |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201166034Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101994747A (en) * | 2009-08-14 | 2011-03-30 | 杨泰和 | Sun gear coaxial drive screw nut structure and stud structure driven thereby |
| CN102384145A (en) * | 2011-06-28 | 2012-03-21 | 无锡舜特金属制品有限公司 | Double-screw bolt with screwing wrench structure |
| CN102644646A (en) * | 2012-04-13 | 2012-08-22 | 苏州怡信光电科技有限公司 | Screw rod applicable in fixing air float block of three-coordinate measuring instrument |
-
2007
- 2007-12-11 CN CNU2007200889105U patent/CN201166034Y/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101994747A (en) * | 2009-08-14 | 2011-03-30 | 杨泰和 | Sun gear coaxial drive screw nut structure and stud structure driven thereby |
| CN102384145A (en) * | 2011-06-28 | 2012-03-21 | 无锡舜特金属制品有限公司 | Double-screw bolt with screwing wrench structure |
| CN102644646A (en) * | 2012-04-13 | 2012-08-22 | 苏州怡信光电科技有限公司 | Screw rod applicable in fixing air float block of three-coordinate measuring instrument |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: DONGFENG COMMERCIAL VEHICLE CO., LTD. Free format text: FORMER OWNER: DONGFENG AUTOMOBILE CO., LTD. Effective date: 20130918 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 430054 WUHAN, HUBEI PROVINCE TO: 442001 SHIYAN, HUBEI PROVINCE |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20130918 Address after: 442001 Shiyan City, Hubei province city Zhangwan District Road No. 2 Patentee after: Dongfeng Commercial Vehicle Co.,Ltd. Address before: 430054 No. 10 Dongfeng Avenue, Zhuankou economic and Technological Development Zone, Wuhan, Hubei, Hanyang Patentee before: DONGFENG MOTER Co.,Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20081217 |