CN203831324U - Fastener forcible withdrawing tool - Google Patents
Fastener forcible withdrawing tool Download PDFInfo
- Publication number
- CN203831324U CN203831324U CN201420198695.4U CN201420198695U CN203831324U CN 203831324 U CN203831324 U CN 203831324U CN 201420198695 U CN201420198695 U CN 201420198695U CN 203831324 U CN203831324 U CN 203831324U
- Authority
- CN
- China
- Prior art keywords
- frustum
- cone
- cylinder
- drill bit
- fastener
- 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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- Portable Nailing Machines And Staplers (AREA)
Abstract
The utility model relates to a fastener forcible withdrawing tool which solves the problem that when an existing broken nail withdrawing tool is used, a broken nail is damaged for the second time in the withdrawing process, and then the broken nail is difficult to withdraw. The fastener forcible withdrawing tool comprises a cylinder, wherein the cross section of the cylinder is orthohexagonal, one end of the cylinder is provided with a drill bit used for punching holes, the other end of the cylinder is provided with a cone frustum, the side face of the cone frustum is provided with threads, the outer diameter of the top of the cone frustum is equal to or smaller than the outer diameter of the drill bit, and the outer diameter of the root portion of the cone frustum is larger than the outer diameter of the drill bit. According to the fastener forcible withdrawing tool, the structure that the drill bit at one end and the cone frustum threads at the other end are matched is adopted, a hole is punched in a damaged fastener before the damaged fastener is withdrawn, and then the damaged fastener can be withdrawn forcibly; the fastener forcible withdrawing tool is combined with the damaged fastener in a screw-in mode, so that secondary damage to the damaged fastener is small.
Description
Technical field
The utility model relates to a kind of hardware & tools, and particularly a kind of securing member takes out instrument by force.
Technical background
The bar shaped securing members such as screw, pin, pin, anti-shear ability own is poor, in reality is fixing, often bend, the damage such as distortion, broken parts is positioned at the parts of required connection, and fastening poor effect does not have fastening effect even completely, but takes out quite difficulty.
The Chinese patent CN201380849A that on March 21st, 2012 is announced, discloses a kind of device for taking out broken nail, and this device is the cylinder of a taper, thick lower little on cylinder, both sides at cylinder are provided with the outstanding age of a draught animal along cylinder direction, and the both sides age of a draught animal, the upper end of cylinder was provided with the circular hole that can insert cross bar in the same way.This device need to, by other instruments in the punching of broken nail end, then be knocked in the small end of taper cylinder in the hole of broken nail, utilizes after age of a draught animal interlock, inserts cross bar broken nail rotation is taken out in circular hole.First this device needs other devices to coordinate punching, punching size is difficult to and this device adaptation, secondary need knocks interlock, the broken nail that can damage itself gos deep into even secondary more to be destroyed, make the more difficult taking-up of broken nail, especially for threaded screw, screw thread may be out of shape stuck in the process of knocking, and is difficult to take out.
Summary of the invention
The purpose of this utility model is to solve the existing broken nail taking-up instrument process of taking out broken nail secondary is destroyed, and causes and takes out difficult problem, provides a kind of securing member to take out by force instrument.
The utility model solves the technical scheme that its technical problem adopts: a kind of securing member takes out instrument by force, comprise that cross section is orthohexagonal cylinder, one end of cylinder is provided with the drill bit for punching, the other end frustum of a cone of cylinder, the side of the frustum of a cone is provided with screw thread, the external diameter at described frustum of a cone top equal or be less than the external diameter of drill bit, the external diameter of frustum of a cone root is greater than the external diameter of drill bit.In the time that the securing member distortion such as nail, screw, pin are blocked, use this device to coordinate rotary tooling, first use drill bit one end in the end of securing member central punch, in the hole of then precession of frustum of a cone one end being accomplished fluently, take out securing member.For the taking-up of screw, the precession direction of drill bit and the frustum of a cone should be the direction of the back-out of screw, in the time of the precession of frustum of a cone screw thread, the drive of screw is greater than to stuck stressed of screw, screw can be back-outed by force; For the level and smooth securing member such as pin or nail, extract after adopting frustum of a cone screw thread clamping.The external diameter of drill bit is consistent with the external diameter at frustum of a cone top, or is slightly larger than the external diameter at frustum of a cone top, so that the sticking into of the frustum of a cone.This programme adopts the mode of precession to be combined with impaired securing member, destroys little to the secondary of impaired securing member.
As preferably, the external diameter of the external diameter of described drill bit and frustum of a cone root is all less than the external radius of a circle of cylinder.Cylinder can play spacing effect.
As preferably, described cylinder is respectively equipped with the arc groove around cylinder near the position at two ends.Arc groove is difference and cylinder stage casing obviously, has indicated the end of cylinder, contributes to location and observation in operating process.
As preferably, described frustum of a cone side is provided with the disconnected groove that interrupts screw thread along normal direction.Disconnected groove interrupts the continuity of frustum of a cone threaded line, and when avoiding the frustum of a cone precession being shot by force, the hole wall of fastener end is subject to screw thread torsion excessive, causes and skids.
As preferably, described disconnected groove is arranged with two in frustum of a cone side.
As preferably, described frustum of a cone top is outer end, and frustum of a cone root is inner, and frustum of a cone side screw thread is outer flat barb-like in tiltedly.Screw thread is little towards side and the axis angle at frustum of a cone top, more easily go deep in hole, and screw thread is large towards the side of frustum of a cone root and the angle of axis, improves snap-in force.This helicitic texture is good from inner stressed effect outward simultaneously, and screw thread itself is not yielding.
As preferably, the precession direction of described drill bit and frustum of a cone screw thread duty is counterclockwise.The conventional screw direction of back-outing is left-handed, and counterclockwise, therefore the screw thread of this programme and drill bit are counterclockwise precession, consistent with screw removing direction.
The utility model adopts one end drill bit cooperatively interacting, the structure of one end frustum of a cone screw thread, and the securing member damaging is first punched and taken out afterwards, can take out by force impaired securing member; Adopt the mode of precession to be combined with impaired securing member, destroy little to the secondary of impaired securing member; By the design of screw thread, improve the combination effect of screw thread and impaired securing member in taking-up process.
Brief description of the drawings
Fig. 1 is a kind of structural representation of the utility model.
Fig. 2 is the local structure for amplifying schematic diagram of the screw thread at A place in the utility model Fig. 1.
In figure: 1. cylinder, 2. drill bit, the 3. frustum of a cone, 4. screw thread, 5. disconnected groove, 6. arc groove.
Detailed description of the invention
Also by reference to the accompanying drawings the utility model is further illustrated below by specific embodiment.
Embodiment: a kind of securing member takes out instrument by force, as shown in Figure 1.This device comprises that cross section is orthohexagonal cylinder 1, and one end of cylinder 1 is provided with drill bit 2, and cylinder 1 other end is the frustum of a cone 3.Cylinder is respectively equipped with arc groove 6 near end positions.The external diameter of drill bit is less than the external diameter of cylinder circumscribed circle, and cylinder end and drill bit root employing arc-shaped transition.
The root external diameter of the frustum of a cone 3 is consistent with cylinder inscribed circle diameter, and the external diameter at the top of the frustum of a cone is consistent with outside diameter.The side of the frustum of a cone is provided with screw thread 4, and is provided with along the normal direction of frustum of a cone side the disconnected groove 5 that interrupts screw thread, and disconnected groove is arranged with two in the side of the frustum of a cone.
As shown in Figure 2, frustum of a cone top is outer end to the helicitic texture of the frustum of a cone, and root is inner, and along longitudinal middle axis cross section, screw thread is towards the side of outer end and the angle of axis is little and screw thread is large towards the angle of inner side and axis.Take out in the process of impaired securing member, screw thread can better go deep in hole that drill bit opens, and screw thread can bear larger pulling force again.
The screw thread precession direction of drill bit precession direction and the frustum of a cone is consistent, is counterclockwise, if taking-up object is screw, the screw thread precession direction of drill bit and the frustum of a cone is consistent with screw back-out direction.
When operation, according to the taking-up instrument of the size Selection suitable types of securing member, first use drill bit one end in fastener end central punch, in the hole of then frustum of a cone precession being accomplished fluently, impaired securing member is taken out by force.
Claims (7)
1. a securing member takes out instrument by force, it is characterized in that: comprise that cross section is orthohexagonal cylinder, one end of cylinder is provided with the drill bit for punching, the other end frustum of a cone of cylinder, the side of the frustum of a cone is provided with screw thread, the external diameter at described frustum of a cone top equal or be less than the external diameter of drill bit, the external diameter of frustum of a cone root is greater than the external diameter of drill bit.
2. a kind of securing member according to claim 1 takes out instrument by force, it is characterized in that: the external diameter of the external diameter of described drill bit and frustum of a cone root is all less than the external radius of a circle of cylinder.
3. a kind of securing member according to claim 1 takes out instrument by force, it is characterized in that: described cylinder is respectively equipped with the arc groove around cylinder near the position at two ends.
4. take out by force instrument according to a kind of securing member described in claim 1 or 2 or 3, it is characterized in that: described frustum of a cone side is provided with the disconnected groove that interrupts screw thread along normal direction.
5. a kind of securing member according to claim 4 takes out instrument by force, it is characterized in that: described disconnected groove is arranged with two in frustum of a cone side.
6. take out by force instrument according to a kind of securing member described in claim 1 or 2 or 3, it is characterized in that: described frustum of a cone top is outer end, frustum of a cone root is inner, and frustum of a cone side screw thread is outer flat barb-like in tiltedly.
7. take out by force instrument according to a kind of securing member described in claim 1 or 2 or 3, it is characterized in that: the precession direction of described drill bit and frustum of a cone screw thread duty is counterclockwise.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420198695.4U CN203831324U (en) | 2014-04-23 | 2014-04-23 | Fastener forcible withdrawing tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420198695.4U CN203831324U (en) | 2014-04-23 | 2014-04-23 | Fastener forcible withdrawing tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203831324U true CN203831324U (en) | 2014-09-17 |
Family
ID=51509212
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420198695.4U Expired - Fee Related CN203831324U (en) | 2014-04-23 | 2014-04-23 | Fastener forcible withdrawing tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203831324U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104802132A (en) * | 2015-04-10 | 2015-07-29 | 力帆实业(集团)股份有限公司 | Tool for taking out embedded hollow connecting part |
| CN104972432A (en) * | 2015-07-14 | 2015-10-14 | 柳州铁道职业技术学院 | Broken head detaching tool for gasoline engine sparking plug |
-
2014
- 2014-04-23 CN CN201420198695.4U patent/CN203831324U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104802132A (en) * | 2015-04-10 | 2015-07-29 | 力帆实业(集团)股份有限公司 | Tool for taking out embedded hollow connecting part |
| CN104972432A (en) * | 2015-07-14 | 2015-10-14 | 柳州铁道职业技术学院 | Broken head detaching tool for gasoline engine sparking plug |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140917 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |