CN201179633Y - Internal tooth type large wrench - Google Patents
Internal tooth type large wrench Download PDFInfo
- Publication number
- CN201179633Y CN201179633Y CNU2008200770529U CN200820077052U CN201179633Y CN 201179633 Y CN201179633 Y CN 201179633Y CN U2008200770529 U CNU2008200770529 U CN U2008200770529U CN 200820077052 U CN200820077052 U CN 200820077052U CN 201179633 Y CN201179633 Y CN 201179633Y
- Authority
- CN
- China
- Prior art keywords
- wrench
- internal tooth
- tooth
- inner hole
- internal
- 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 - Fee Related
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- Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)
Abstract
The utility model relates to a tool, in particular to a tool used in the process of assembling a motor. The utility model provides an internal tooth type construction wrench to solve the problems of large and clumsy appearance size, easy torsion and deformation and easy rupture, and the like of the prior toothed tooling wrench---a tool for tightening a round nut the excircle of which is provided with tooth space. The internal tooth type construction wrench comprises a wrench head which is provided with an inner hole, wherein the inner hole wall is provided with teeth; and the rear part of the wrench head is provided with a wrench handle. Compared with the prior toothed tooling wrench, the internal tooth type construction wrench integrates the prior wrench head, the rod and the handle into a whole and has cleverish appearance; moreover, four teeth matched with the nut is the internal tooth mode, the tooth root part is in the circular arc transition to remove the stress and the tooth part is not easily deformed or ruptured. The wrench has small volume, light weight, convenient use and durability.
Description
Technical field
The utility model relates to a kind of instrument, and the instrument that uses when particularly motor assembles is specially the internal-gear type dwang.
Background technology
The round nut general size that motor shaft head tightens is bigger, and cylindrical has teeth groove, and fastening method has two kinds usually: a kind of is to pound tightly with copper rod, but this method is not known that nut is fastening and whether reached the moment requirement; Another kind is to adopt toothed frock spanner to cooperate torque spanner fastening.Toothed frock spanner has driving end, wrenching bar, spanner handle three parts, it is clumsy so this kind spanner appearance and size is big, and four teeth on the driving end expose (as shown in Figure 1), four teeth that expose during fastening big nut insert in the teeth groove on the round nut cylindricals, four teeth bear the easy torsional deformation of big moment, be easy to fracture, cause the spanner frock to be scrapped.Service efficiency is very low.
Summary of the invention
The utility model is in order to solve the instrument that existing fastening cylindrical has the round nut of teeth groove---and toothed frock spanner appearance and size provides a kind of internal-gear type dwang than problems such as big and clumsy, easy torsional deformation, easy fractures.This spanner profile is light and handy, easy to operate, and tooth portion can not be out of shape fracture.
The utility model is to adopt following technical scheme to realize: the internal-gear type dwang, comprise driving end, and have endoporus on the driving end, inner hole wall is provided with tooth; The rear portion of driving end is provided with spanner handle.During use, driving end is placed on the round nut, and the tooth on the inner hole wall is cooperated with teeth groove on the round nut cylindrical; This internal-gear type dwang cooperates (spanner handle of promptly pulling this spanner with torque spanner) can realize round nut fastening on the motor shaft head with torque spanner.In order to realize fastening to described round nut, naturally, the internal diameter of the endoporus on the driving end and the external diameter of fastened round nut are complementary (be slightly larger than or equal), and the quantity of the tooth on the inner hole wall is consistent with the teeth groove quantity on the fastened round nut cylindrical; The spanner handle at driving end rear portion is positive hexagonal prism, pulls realizing better.
Internal-gear type dwang described in the utility model is compared with existing toothed frock spanner, common driving end, bar, handle three is partly integrated as a whole, profile is small and exquisite, and four teeth that cooperate with nut are internal-gear type, tooth root portion is an arc transition to eliminate stress, and tooth portion is not easy distortion or fracture.This spanner volume is little, in light weight, easy to use, and durable, welcome by plant operators, uses once success first, without any distortion or fracture, has used success rate 100% since long-term the use.
Description of drawings
Fig. 1 is the structural representation of the driving end of existing toothed frock spanner;
Fig. 2 is the structural representation of internal-gear type dwang described in the utility model;
Fig. 3 is the side view of Fig. 2;
The specific embodiment
The internal-gear type dwang comprises driving end 1, has endoporus on the driving end 1, and inner hole wall is provided with tooth 2; The rear portion of driving end is provided with spanner handle 3.During concrete the manufacturing, the endoporus internal diameter on the driving end 1 and the external diameter of fastened round nut be complementary (be slightly larger than or equal), the quantity of the tooth 2 on the inner hole wall is four and is the distribution of " ten " font, and is consistent with teeth groove quantity and position on the fastened round nut cylindrical; The spanner handle 3 at driving end rear portion is positive hexagonal prism.The tooth root portion of the tooth 2 on the inner hole wall is an arc transition, to eliminate stress, makes tooth portion be not easy distortion or fracture.
Claims (3)
1, a kind of internal-gear type dwang comprises driving end (1), it is characterized by: driving end has endoporus on (1), and inner hole wall is provided with tooth (2); The rear portion of driving end is provided with spanner handle (3).
2, internal-gear type dwang as claimed in claim 1 is characterized by: the quantity of the tooth on the inner hole wall (2) is four and is the distribution of " ten " font.
3, internal-gear type dwang as claimed in claim 1 or 2 is characterized by: the tooth root portion of the tooth on the inner hole wall (2) is an arc transition.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200770529U CN201179633Y (en) | 2008-04-21 | 2008-04-21 | Internal tooth type large wrench |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200770529U CN201179633Y (en) | 2008-04-21 | 2008-04-21 | Internal tooth type large wrench |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201179633Y true CN201179633Y (en) | 2009-01-14 |
Family
ID=40249136
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200770529U Expired - Fee Related CN201179633Y (en) | 2008-04-21 | 2008-04-21 | Internal tooth type large wrench |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201179633Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103639956A (en) * | 2013-11-16 | 2014-03-19 | 苏州华恒医用器械有限公司 | Medical mobile phone rear cover wrench |
| CN106737336A (en) * | 2017-02-20 | 2017-05-31 | 广东电网有限责任公司江门供电局 | A kind of nut dismounting instrument |
-
2008
- 2008-04-21 CN CNU2008200770529U patent/CN201179633Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103639956A (en) * | 2013-11-16 | 2014-03-19 | 苏州华恒医用器械有限公司 | Medical mobile phone rear cover wrench |
| CN106737336A (en) * | 2017-02-20 | 2017-05-31 | 广东电网有限责任公司江门供电局 | A kind of nut dismounting instrument |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090114 Termination date: 20130421 |