CN205876919U - Sewing needle crab bolt - Google Patents
Sewing needle crab bolt Download PDFInfo
- Publication number
- CN205876919U CN205876919U CN201620778750.6U CN201620778750U CN205876919U CN 205876919 U CN205876919 U CN 205876919U CN 201620778750 U CN201620778750 U CN 201620778750U CN 205876919 U CN205876919 U CN 205876919U
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- CN
- China
- Prior art keywords
- bolt
- screw rod
- chip area
- screw
- needle
- 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.)
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Abstract
The utility model relates to a sewing machine field, concretely relates to sewing needle crab bolt, include: bolt head (1), from screw rod (2) and the concave screw edge of a knife (4) of establishing on bolt head (1) terminal surface that the coaxial extension of bolt head formed, screw rod (2) be used for passing behind the sewing needle board with the sewing machine board on the screw be connected, its characterized in that, screw rod (2) surface still is equipped with chip groove (3), chip groove (3) are link up with screw rod (2) terminal surface along the length direction extension of screw rod (2). Through the structure, the utility model provides a sewing needle crab bolt can back -out in the environment that the screw stopped up in light precession to effectual protection screw thread improves screw thread life.
Description
Technical field
This utility model relates to sewing device field, is specifically related to a kind of needle crab bolt.
Background technology
Sewing machine, as a kind of general fabric, leather sewn equipment, is flooded with various the end of a thread and cloth in its working environment
The trickle foreign material such as bits, inside these impurities accumulations to sewing machine, affect the normal operation of sewing machine.Therefore in the use of sewing machine
Cheng Zhong, need to carry out daily cleaning and time-based maintenance.Sewing machine needle board is as direct and sewing material sewing machine work portion
Part, contacts with various trickle foreign material for a long time, is more easy to gather foreign material in needle plate and hole about, and its cleaning maintenance frequency is more
Height, needs frequent turn needle plate Bolt dismantling needle plate to clear up in the process.
But, existing needle crab bolt, often can be because of the needle plate bolt hole screw thread being located on Sewing machines table
Blocked by above-mentioned trickle foreign material, and be not easy to be screwed into and back-out or cause bolt stripped thread, time serious, result even in bolt hole spalling,
Scrap whole sewing machine.
Utility model content
The purpose of this utility model, is to provide a kind of needle crab bolt, it is possible to blocked by fine impurities at screw thread
Easily spinning in and out in environment, and effectively protect screw thread, improve bolt and the service life of bolt hole.
This utility model provides a kind of needle crab bolt, including: bolt head, coaxially extends formation from described bolt head
Screw rod and the recessed screw edge of a knife on bolt head end face, described screw rod for through after sewing machine needle board with sewing machine
Screw on platform connects, and described screw surface is additionally provided with chip area, and this chip area extends screw rod along the length direction of screw rod
End face is through, and its degree of depth is 0.5mm≤h≤1mm.
Needle crab bolt is in bolt hole during precession, and screw thread protruding on screw rod is formed many on above-mentioned chip area
The screw thread space of bolt hole can be produced to squeeze by individual section cuts effect, and the foreign body extruded tapes of deposition in bolt hole screw thread is entered above-mentioned chip removal
In groove, and take the foreign body squeezed under cutting out of when screwing out, in order to remove, make bolt be in the duty of health at any time, play guarantor
Protect screw thread, improve the purpose in screw thread service life.
Because the volume of needle crab bolt is smaller, for convenience of production and processing, the row on above-mentioned needle plate bolt screw rod
Bits groove is preferably arranged to straight trough, and to arrange quantity be 1-3 bar.
Preferably, the chip area of above-mentioned needle crab bolt, quantity is set to 2, while generation is squeezed and is cut effect,
Guarantee that the fastening effect of bolt is effectively with reliable.
Preferably, the chip area of above-mentioned needle crab bolt has interval in one end of bolt head and bolt head root,
Described interval width is 1-2mm；The most through this debris discharging chute structure, it is possible to the effective lubrication stoped in needle plate lower mechanisms
Oil returns on needle plate face along above-mentioned chip area.
Preferably, the cross section of the chip area of above-mentioned needle crab bolt is circular arc, it is simple to cleaning.
Preferably, the axially inclined setting of chip area of above-mentioned needle crab bolt, it is deep near one end of bolt head
Degree is less than the other end.The design of this inclination, makes chip area away from the chip space of bolt head one end more than near bolt head
One end, more meets screw rod and first screws in bolt hole away from bolt head one end, collect the actual characteristic that foreign body amount is bigger.
Preferably, the screw rod of above-mentioned needle crab bolt is set to full thread, and to increase the crowded quantity cutting section, it is right to improve
In bolt hole screw thread, the crowded of foreign body of deposition cuts number of times, more thorough to the elimination effect of foreign body.
Preferably, the bolt head of above-mentioned needle crab bolt is countersunk head pyramidal structure, makes needle plate work surface keep smooth,
Avoid the foreign material such as the fiber on the sewing materials such as fabric, chip to be bolted head to scrape and bring in bolt hole.
In sum, this utility model is provided a kind of needle crab bolt, it is possible to blocked by fine impurities at screw thread
Environment in easily spinning in and out, and effectively protect screw thread, improve bolt and the service life of bolt hole.
Accompanying drawing explanation
In order to be illustrated more clearly that the technical scheme of this utility model detailed description of the invention, below will be to detailed description of the invention
The accompanying drawing used required in is briefly described.In accompanying drawing, each several part might not be drawn according to actual ratio.
The needle plate bolt front view that Fig. 1 provides for this utility model one embodiment；
The needle plate bolt top view that Fig. 2 provides for this utility model one embodiment；
The needle plate bolt 3 d effect graph that Fig. 3 provides for this utility model one embodiment.
Reference:
1-bolt head；2-screw rod；3-chip area；The 4-screw edge of a knife
Detailed description of the invention
Understandable for enabling features described above of the present utility model and advantage to become apparent from, below in conjunction with the accompanying drawings with one preferably
Embodiment is described in further detail this use is novel.
See Fig. 1 to Fig. 3, a kind of needle crab bolt that the present embodiment provides, including: the bolt of countersunk head pyramidal structure
1, screw rod 2 and the recessed screw edge of a knife 4 on bolt head 1 end face, the described spiral shell of formation is coaxially extended from described bolt head 1
Bar 2 is for being connected with the screw on Sewing machines table after sewing machine needle board, and described screw rod 2 surface is additionally provided with chip area 3, institute
Stating chip area 3 to extend through for screw rod 2 end face along the length direction of screw rod 2, and above-mentioned chip area 3 is near the one of bolt head 1
End and bolt head 1 root have interval, and this interval width is 1-2mm；The above-mentioned chip area degree of depth is 0.5mm≤h≤1mm.
When dismantling needle crab bolt, apply to rotate by screwdriver Flathead screwdriver 4 on bolt head 1
Power, drives screw rod 2 precession in respective bolt holes of above-mentioned needle plate bolt；The full thread that screw rod 2 protrudes above is at two direct chip dischargings
What the screw thread space of bolt hole can be produced repeatedly, repeatedly by the multiple sections formed on groove 3 crowded cuts effect, by bolt hole screw thread
The foreign body extruded tapes of middle deposition enters in above-mentioned chip area 3, and is taken out of by the foreign body squeezed under cutting when screwing out, and keeps the cleaning of screw thread.
Meanwhile, the not communicating structure design of chip area 3, it is possible to the effective lubricating oil stoped in needle plate lower mechanisms is along above-mentioned chip area
Return on 3 on needle plate face, thus avoid sewing materials to be infected with greasy dirt.
By above effect, needle crab bolt can be in the duty of health at any time, on bolt and bolt hole
Screw thread is all effectively protected, and service life improves 3 to 5 times.
It should be noted that an above embodiment to this has been described in detail, but described content is only this practicality
Novel preferred embodiment, it is impossible to be considered for limiting practical range of the present utility model.All according to this utility model application model
Enclose made impartial change and improvement etc., within all should still belonging to the patent covering scope of the present invention.
Claims (8)
1. a needle crab bolt, the screw rod including: bolt head, coaxially extending formation from described bolt head and recessed
The screw edge of a knife on bolt head end face, described screw rod is used for being connected with the screw on Sewing machines table after sewing machine needle board,
It is characterized in that, described screw surface is additionally provided with chip area, and described chip area extends and screw rod end along the length direction of screw rod
Face is through, and the degree of depth of described chip area is 0.5mm≤h≤1mm.
Needle crab bolt the most according to claim 1, it is characterised in that
Described chip area is straight trough, is provided with 1-3 bar.
Needle crab bolt the most according to claim 2, it is characterised in that
Described chip area is provided with 2, is distributed on described screw rod periphery.
Needle crab bolt the most according to claim 1, it is characterised in that
Described chip area has interval in one end of bolt head and bolt head root, and described interval width is 1-2mm.
Needle crab bolt the most according to claim 1, it is characterised in that
The cross section of described chip area is circular arc.
Needle crab bolt the most according to claim 1, it is characterised in that
The axially inclined setting of described chip area, it is less than the other end near one end degree of depth of above-mentioned bolt head.
7. according to the needle crab bolt described in any one of claim 1 to 6, it is characterised in that
Described screw rod is full flight screw.
Needle crab bolt the most according to claim 7, it is characterised in that
Described bolt head is countersunk head pyramidal structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620778750.6U CN205876919U (en) | 2016-07-21 | 2016-07-21 | Sewing needle crab bolt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620778750.6U CN205876919U (en) | 2016-07-21 | 2016-07-21 | Sewing needle crab bolt |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205876919U true CN205876919U (en) | 2017-01-11 |
Family
ID=57697472
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620778750.6U Active CN205876919U (en) | 2016-07-21 | 2016-07-21 | Sewing needle crab bolt |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205876919U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114001081A (en) * | 2021-11-10 | 2022-02-01 | 内蒙古电力(集团)有限责任公司内蒙古电力科学研究院分公司 | Anti-seizing stainless steel bolt and manufacturing method thereof |
-
2016
- 2016-07-21 CN CN201620778750.6U patent/CN205876919U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114001081A (en) * | 2021-11-10 | 2022-02-01 | 内蒙古电力(集团)有限责任公司内蒙古电力科学研究院分公司 | Anti-seizing stainless steel bolt and manufacturing method thereof |
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|---|---|---|---|
| GR01 | Patent grant |