CN207421086U - It bows screw - Google Patents
It bows screw Download PDFInfo
- Publication number
- CN207421086U CN207421086U CN201721560415.XU CN201721560415U CN207421086U CN 207421086 U CN207421086 U CN 207421086U CN 201721560415 U CN201721560415 U CN 201721560415U CN 207421086 U CN207421086 U CN 207421086U
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- slot
- wall
- screw
- stress
- plum blossom
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Abstract
One kind is bowed screw, and including circular screw terminal, one side end face of screw terminal is equipped with the plum blossom type groove that cold-heading forms, and another side end face is equipped with externally threaded pillar, and the screw terminal periphery is arc rounded structure；The notch of the plum blossom type groove is equipped with fillet.The utility model provides one kind and bows screw, sets fillet in the opening of plum blossom type groove, facilitates the insertion of instrument, plum blossom type groove is formed using cold-heading, and intensity is good, can bear larger torque.
Description
Technical field
The utility model belongs to technical field of fastening, refers in particular to one kind and bows screw.
Background technology
Bow screw head thickness it is relatively thin, for coordinate in the shallower mounting hole of groove depth, corresponding this screw is set
Putting turning on screw terminal, bore open is smaller, and depth is also shallower, screwdriver during in order to improve rotation screw and turns hole
Stress surface will usually turn hole and be arranged to irregularly-shaped hole；But due to being limited its shallower depth, this irregularly-shaped hole still easily exists
It is subject to deform upon when high torque.
Utility model content
The purpose of this utility model is to provide one kind and bows screw, the plum blossom type groove formed using cold-heading, intensity higher；Outside
The locking slot and loosen slot that screw terminal outer end face is set, can be when irregularly-shaped hole be deformed upon as auxiliary mounting groove.
What the purpose of this utility model was realized in：One kind is bowed screw, including circular screw terminal, on the outside of screw terminal
End face is equipped with the plum blossom type groove that cold-heading forms, and inner side end is equipped with externally threaded pillar, and the screw terminal periphery is arc
Rounded structure；The notch of the plum blossom type groove is equipped with fillet；Locking slot is being distributed with around the fillet in screw terminal end face outside
With loosening slot, locking slot and loosening slot are arranged in pairs respectively, and close to screw terminal end face outside outer.
By using above-mentioned technical proposal, after the deformation of blossom type molar type, locking slot can be inserted in using specific purpose tool
Or loosen the installation and removal that screw of bowing is realized on slot.
Preferably, the locking slot is respectively provided with arc and two relatively parallel /V side walls with slot is loosened, and with company
Connect the stress cell wall of two side, stress cell wall is radially set, locking slot and loosen the groove depth of slot respectively from stress cell wall to limit
The position side wall other end gradually becomes shallower as；The groove depth of the locking slot direction that shoals is counterclockwise, to loosen the groove depth direction that shoals of slot
Clockwise.
By using above-mentioned technical proposal, the structure of the locking slot and loosening slot can coordinate the instrument of disc-like shapes milling cutter
It is operated, can also be inserted in slot and be operated using the inclination of common rod piece；Locking slot and loosening slot are independently arranged, made
Each slot is obtained only there are one working face, and opposite side can then save the setting of cell wall, directly directly transit to screw by trench bottom
The outer end face of head, avoid relatively thin screw terminal seriously reduces in the position intensity；The /V side wall of arc can limit instrument
Double swerve, arcuate structure are preferably concentric with the plum blossom type groove at middle part.
Preferably, the cell wall of the plum blossom type groove is by the stress wall of six arc convexes and the limited wall of six arc evaginations
It forms, limited wall is between adjacent stress wall, and the arc length of limited wall is less than the arc length of stress wall and radian is more than stress wall
Radian.
By using above-mentioned technical proposal, using the stress wall construction of arc, the forced area with instrument can be increased, carried
The high ability of the resistance to peak torque of plum blossom type groove.
Description of the drawings
Fig. 1 is the three-dimensional structure diagram one of the utility model；
Fig. 2 is the top view of the utility model；
Fig. 3 is the three-dimensional structure diagram two of the utility model；
Fig. 4 is the enlarged drawing of this practicality habit plum blossom type groove.
Reference numeral：1st, screw terminal；2nd, pillar；3rd, plum blossom type groove；3a, stress wall；3b, limited wall；4th, slot is loosened；5th, lock
Tight slot；6th, stress cell wall；7th, /V side wall；8th, trench bottom；9th, fillet.
Specific embodiment
The utility model is further described with specific embodiment below in conjunction with the accompanying drawings, referring to Fig. 1-4：
One kind is bowed screw, and including circular screw terminal 1,1 end face outside of screw terminal is equipped with the plum blossom type groove that cold-heading forms
3, inner side end is equipped with externally threaded pillar 2, and 1 periphery of screw terminal is arc rounded structure；The plum blossom type groove 3
Notch is equipped with fillet 9；1 end face outside of screw terminal around the fillet 9 being distributed with locking slot 5 and loosens slot 4,5 He of locking slot
Slot 4 is loosened to be arranged in pairs respectively, and close to 1 end face outside outer of screw terminal.After the deformation of 3 tooth form of plum blossom type groove, it can utilize
Specific purpose tool is inserted in locking slot 5 or loosens the installation and removal that screw of bowing is realized on slot 4.
Specific to see Fig. 3, the locking slot 5 is respectively provided with arc and two relatively parallel /V side walls 7 with slot 4 is loosened,
And with the stress cell wall 6 of connection two side, stress cell wall 6 radially sets, locking slot 5 and loosen the groove depth of slot 4 respectively by by
It is gradually become shallower as at power cell wall 6 to 7 other end of /V side wall；The groove depth of locking slot 5 shoals direction counterclockwise, to loosen slot 4
Groove depth shoal direction for clockwise.So set, the structure of the locking slot 5 and loosening slot 4 can coordinate disc-like shapes
The instrument of milling cutter is operated, and can also be inserted in slot and be operated using the inclination of common rod piece；By locking slot 5 and loosen slot
4 are independently arranged so that for each slot only there are one working face, opposite side can then save the setting of cell wall, directly straight by trench bottom 8
The outer end face for transitting to screw terminal 1 is connect, avoid relatively thin screw terminal 1 seriously reduces in the position intensity；The limiting side of arc
Wall 7 can limit instrument double swerve, and arcuate structure is preferably concentric with the plum blossom type groove 3 at middle part.
It is specific to see Fig. 4, the cell wall of the plum blossom type groove 3 by six arc convexes stress wall 3a and six arc evaginations
Limited wall 3b is formed, limited wall 3b between adjacent stress wall 3a, the arc length of the arc length of limited wall 3b less than stress wall 3a and
Radian is more than the radian of stress wall 3a.Using the stress wall 3a structures of arc, the forced area with instrument can be increased, improved
The ability of 3 resistance to peak torque of plum blossom type groove.
Above-described embodiment is only the preferred embodiment of the utility model, not limits the protection model of the utility model according to this
It encloses, therefore：The equivalence changes that all structures, shape, principle according to the utility model are done, should all be covered by the protection of the utility model
Within the scope of.
Claims (3)
- The screw 1. one kind is bowed, including circular screw terminal (1), it is characterised in that：Screw terminal (1) end face outside be equipped with cold-heading and Into plum blossom type groove (3), inner side end is equipped with externally threaded pillar (2), and screw terminal (1) periphery is arc fillet knot Structure；The notch of the plum blossom type groove (3) is equipped with fillet (9)；Locking is being distributed with around fillet (9) in screw terminal (1) end face outside Slot (5) and loosening slot (4), locking slot (5) and loosening slot (4) are arranged in pairs respectively, and outside screw terminal (1) end face outside Edge.
- 2. screw according to claim 1 of bowing, it is characterised in that：The locking slot (5) and loosening slot (4) are respectively provided with Arc and two relatively parallel /V side walls (7), and there is the stress cell wall (6) of connection two side, stress cell wall (6) is radially set It puts, locking slot (5) and loosens the groove depth of slot (4) respectively from being gradually become shallower as to /V side wall (7) other end at stress cell wall (6)； The groove depth of locking slot (5) shoals direction and shoals direction counterclockwise, to loosen the groove depth of slot (4) as clockwise.
- 3. screw according to claim 1 of bowing, it is characterised in that：The cell wall of the plum blossom type groove (3) is by six arcs The limited wall (3b) of the stress wall (3a) of convex and six arc evaginations is formed, limited wall (3b) between adjacent stress wall (3a) it Between, the arc length of limited wall (3b) is less than the arc length of stress wall (3a) and radian is more than the radian of stress wall (3a).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721560415.XU CN207421086U (en) | 2017-11-21 | 2017-11-21 | It bows screw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721560415.XU CN207421086U (en) | 2017-11-21 | 2017-11-21 | It bows screw |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207421086U true CN207421086U (en) | 2018-05-29 |
Family
ID=62303737
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721560415.XU Active CN207421086U (en) | 2017-11-21 | 2017-11-21 | It bows screw |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207421086U (en) |
-
2017
- 2017-11-21 CN CN201721560415.XU patent/CN207421086U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: 317200 No.1, Dongyuan Road, Baihe Town, Tiantai County, Taizhou City, Zhejiang Province (Wenxi Village) Patentee after: Zhejiang Tiantai Jiuxing Machinery Co., Ltd Address before: 317200 Zhejiang province Taizhou City Tiantai County Baihe Town Da Lu Xia Village (hengying Pioneer Park Company) Patentee before: TIANTAI COUNTY JIUXING MACHINERY Co.,Ltd. |
|
| CP03 | Change of name, title or address |