CN202964929U - Electric drill bit with variable diameter - Google Patents
Electric drill bit with variable diameter Download PDFInfo
- Publication number
- CN202964929U CN202964929U CN 201220638795 CN201220638795U CN202964929U CN 202964929 U CN202964929 U CN 202964929U CN 201220638795 CN201220638795 CN 201220638795 CN 201220638795 U CN201220638795 U CN 201220638795U CN 202964929 U CN202964929 U CN 202964929U
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- CN
- China
- Prior art keywords
- drill bit
- blade
- drill
- reducing
- notch
- 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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Abstract
The utility model discloses an electric drill bit with variable diameter. The electric drill bit comprises a drill bit top portion, a drill body and a drill tail, the drill bit top portion is triangular diamond-shaped, a notch which penetrates through the drill body in the axial direction is formed in the drill body, a blade with variable diameter is arranged in the notch, the drill body and the drill bit top portion are hollow bodies, and a wedge block is arranged in the hollow bodies. The blade with the variable diameter is an arc-shaped blade or a rectangular blade. The electric drill bit with variable diameter is capable of enlarging a drill hole, and a user can change the size of the drill hole under the condition that the drill bit does not need to be changed.
Description
Technical field
The utility model relates to a kind of drill bit for boring, relates in particular to make boring become large reducing drill bit.
Background technology
In building field, often use electric drill and drill through hole on wall, in order to circuit is installed.For example Granted publication number is CN201970370U, Granted publication day is that the Chinese utility model on September 14th, 2011 discloses a kind of Novel electric drill, comprise electric drill body, drill bit and storeroom, be characterized in that each electric drill body connects a drill bit, consist of a complete electric drill, a storeroom is installed on the electric drill body, and a plurality of standby drill bits of inner storage are like this when the standby drill bit that uses after a Drill Crack in storeroom.But the bit diameter of this utility model is certain, and its boring aperture is constant, and the more bit change of just having to when the user need to bore larger hole has so just increased with changing the time, has reduced operating efficiency.
The utility model content
In order to overcome defects, the utility model provides a kind of reducing drill bit, this reducing drill bit is arranged on when holing on common electric drill, the user can change according to the requirement of its boring the size of bit diameter, thereby change the size of boring aperture, so just reduce user's time of bit change more, thereby improved operating efficiency.
In order to solve the problems of the technologies described above, the technical solution adopted in the utility model is:
The reducing drill bit comprises the drill bit top, bores body and bore tail, it is characterized in that: described drill bit top is the triangle rhombus, described brill body is provided with one and axially connects notch, be provided with the reducing blade in notch, described brill body and drill bit top are hollow body, are provided with wedge in hollow body.
Described reducing blade is circular-arc blade.
Described reducing blade is rectangular-shaped blade.
The utlity model has following advantage:
Brill of the present utility model is provided with one with it and axially connects notch, is provided with the reducing blade in notch, and boring body and drill bit top is hollow body, is provided with wedge in hollow body.The user when needing to become the large aperture, only needs to advance wedge to make the reducing blade protrude from notch and gets final product when boring, because the reducing blade has protruded notch, the reducing blade begins to bore mouth, has so just increased the aperture, thereby avoided the user with bit change, improved operating efficiency.Reducing blade of the present utility model is circular-arc blade, and insert orientation is consistent.The damage that blade is set like this is little, the long service life of blade.And the reducing blade is made as rectangular-shaped blade, and reducing is quick, and efficient is high.Drill bit of the present utility model top is the triangle rhombus, is difficult for during boring skidding, and easily creeps into wall, and the dust that produces is few.
Description of drawings
Fig. 1 is the schematic diagram of reducing blade in notch;
Fig. 2 is the schematic diagram that the reducing blade protrudes notch.
Mark 1 in figure, drill bit top, 2, notch, 3, the reducing blade, 4, bore body, 5, bore tail, 6, wedge.
The specific embodiment
As depicted in figs. 1 and 2, the utility model provides the reducing drill bit, comprise drill bit top 1, bore body 4 and bore tail 5, it is characterized in that: described drill bit top 1 is the triangle rhombus, described brill body 4 is provided with one and axially connects notch 2, be provided with reducing blade 3 in notch 2, described brill body 4 and drill bit top 1 are hollow body, are provided with wedge 6 in hollow body.
Described reducing blade 3 is circular-arc blade, and perhaps reducing blade 3 is rectangular-shaped blade.
As shown in Figure 2, brill of the present utility model is provided with one with it and axially connects notch 2, be provided with reducing blade 3 in notch 2, the user is when boring, when needing to become the large aperture, only needing to advance wedge 6 to make reducing blade 3 protrude from notch 2 gets final product, because reducing blade 3 has protruded notch 2, reducing blade 3 begins to bore mouth, has so just increased the aperture, thereby avoided the user with bit change, improved operating efficiency.Reducing blade 3 is circular-arc blade, and insert orientation is consistent.Arrange like this damage of reducing blade little, the long service life of reducing blade.And reducing blade 3 is made as rectangular-shaped blade, and reducing is quick, and efficient is high.
Claims (3)
1. reducing drill bit, comprise drill bit top (1), bore body (4) and bore tail (5), it is characterized in that: described drill bit top (1) is the triangle rhombus, described brill body (4) is provided with one and axially connects notch (2), be provided with reducing blade (3) in notch (2), described brill body (4) and drill bit top (1) are hollow body, are provided with wedge (6) in hollow body.
2. reducing drill bit according to claim 1, it is characterized in that: described reducing blade (3) is circular-arc blade.
3. reducing drill bit according to claim 1, it is characterized in that: described reducing blade (3) is rectangular-shaped blade.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220638795 CN202964929U (en) | 2012-11-28 | 2012-11-28 | Electric drill bit with variable diameter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220638795 CN202964929U (en) | 2012-11-28 | 2012-11-28 | Electric drill bit with variable diameter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202964929U true CN202964929U (en) | 2013-06-05 |
Family
ID=48506055
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220638795 Expired - Fee Related CN202964929U (en) | 2012-11-28 | 2012-11-28 | Electric drill bit with variable diameter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202964929U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106255573A (en) * | 2015-04-13 | 2016-12-21 | Fs技术公司 | Expanding drill bit |
| CN111271000A (en) * | 2018-12-05 | 2020-06-12 | 武穴市金锐精密锻造有限公司 | Down-the-hole drill bit |
| CN112873431A (en) * | 2021-01-22 | 2021-06-01 | 温州职业技术学院 | High-efficient puncher of furniture board |
-
2012
- 2012-11-28 CN CN 201220638795 patent/CN202964929U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106255573A (en) * | 2015-04-13 | 2016-12-21 | Fs技术公司 | Expanding drill bit |
| CN106255573B (en) * | 2015-04-13 | 2018-11-23 | Fs技术公司 | It is expanding to use drill bit |
| CN111271000A (en) * | 2018-12-05 | 2020-06-12 | 武穴市金锐精密锻造有限公司 | Down-the-hole drill bit |
| CN112873431A (en) * | 2021-01-22 | 2021-06-01 | 温州职业技术学院 | High-efficient puncher of furniture board |
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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: 20130605 Termination date: 20131128 |