CN104526654A - Reducing sleeve for drill bits - Google Patents
Reducing sleeve for drill bits Download PDFInfo
- Publication number
- CN104526654A CN104526654A CN201510014258.1A CN201510014258A CN104526654A CN 104526654 A CN104526654 A CN 104526654A CN 201510014258 A CN201510014258 A CN 201510014258A CN 104526654 A CN104526654 A CN 104526654A
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- CN
- China
- Prior art keywords
- reducing sleeve
- drill
- drill bit
- locking
- hole
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- 238000009434 installation Methods 0.000 claims abstract description 16
- 229910000831 Steel Inorganic materials 0.000 claims description 22
- 239000010959 steel Substances 0.000 claims description 22
- 238000006073 displacement reaction Methods 0.000 claims description 4
- 230000000694 effects Effects 0.000 description 3
- 230000001360 synchronised effect Effects 0.000 description 3
- 230000003993 interaction Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000009527 percussion Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25F—COMBINATION OR MULTI-PURPOSE TOOLS NOT OTHERWISE PROVIDED FOR; DETAILS OR COMPONENTS OF PORTABLE POWER-DRIVEN TOOLS NOT PARTICULARLY RELATED TO THE OPERATIONS PERFORMED AND NOT OTHERWISE PROVIDED FOR
- B25F3/00—Associations of tools for different working operations with one portable power-drive means; Adapters therefor
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Processing Of Stones Or Stones Resemblance Materials (AREA)
Abstract
The invention relates to a reducing sleeve for drill bits. The reducing sleeve for drill bits mainly solves the technical problem that domestic drill bits can not be installed on drill chucks of foreign electric drills in the prior art. The reducing sleeve for drill bits is characterized by comprising a connection rod, one end of the connection rod is provided with a limit groove matched with a five-groove drill chuck of an electric drill, the other end of the connection rod is fixed to the reducing sleeve, the other end of the reducing sleeve is provided with a square installation hole matched with a drill bit four-groove square handle and used for locking the drill bit square handle, ball holes are formed in two opposite side walls in the square installation hole, balls are installed in the ball holes and can be embedded into the ball holes under driving of a self-locking sleeve to be attached to a locking groove of the drill bit square handle, the self-locking sleeve can be movably arranged outside the reducing sleeve in a sleeving mode, and the self-locking sleeve is internally provided with a reset spring. The reducing sleeve for drill bits has the advantages that the varieties of drill bits used by electric drills with foreign five-groove drill chucks can be increased, the universality of electric drills is improved, and the use cost of users is lowered.
Description
Technical field
The present invention relates to a kind of sleeve barrel tool of fixed drill bit, relate to a kind of drill bit reducing sleeve in particular, be mainly used in the use field of drill bit.
Background technology
Electric drill is the drilling machine utilizing electricity to do power, and be the conventional products in electric tool, existing electric drill is mainly divided three classes: electric hand drill, percussion drill, hammer drill, but no matter which kind of electric drill all be unable to do without drill bit in use; What substantially adopt due to domestic drill bit is that the drill chuck of four groove side's handle structures and electric drill grips, and external electric drill adopts mostly is five grooves circle handle structure drill chucks, the drill bit of domestic standard configuration just can not be used like this when user buys the external electric drill produced, then must the five grooves circle handle drill bits that abroad produce of supporting purchase, improve the use cost of user accordingly.
Summary of the invention
In order to the drill chuck solving existing external electric drill can not install the technical problems such as domestic drill bit, the invention provides a kind of drill bit reducing sleeve, domestic four groove square shank drill heads just can be made also to can be used for, on the external electric drill instrument produced, reducing user's drill bit cost in use by this reducing sleeve.
For solving above technical problem, the technical scheme that the present invention takes is a kind of drill bit reducing sleeve, it is characterized in that including connecting rod, and this connecting rod one end is provided with the stopper slot matched with five traverse drill chucks of electric drill, and the other end and reducing sleeve fix; The other end of described reducing sleeve is provided with the installation square hole for locking drill bit side's handle matched with drill bit four groove side handle, in this installation square hole, two lateral walls is provided with ball hole, in this ball hole, ball is installed, described ball can embed in ball hole and fit with the locking slot of drill bit side's handle under the driving from lock tube, described be nested with outside reducing sleeve from lock tube is mobilizable, back-moving spring is being provided with in lock tube, the a set of press-fit that offsets with reducing sleeve of this back-moving spring, the other end and the press-fit that offsets from the inwall of lock tube.
Further, connecting rod includes link and locking end, and the external diameter of locking end is less than link and stopper slot is arranged on link; Be arranged with lower position block at the joint of described locking end and link, fit with lower position block bottom described reducing sleeve one end; Be fixed with upper cap at the other end of described reducing sleeve, described self-locking to be placed between upper cap and lower position block and can under external force along the upper and lower displacement of reducing sleeve axis.
Further, body is included from lock tube described, the through hole that two ends communicate is provided with in body, the madial wall of through hole is provided with the first step cutting pattern, the internal diameter of the first step cutting pattern and the external diameter of reducing sleeve match, and are provided with the second step cutting pattern above the first step cutting pattern, and the second described step cutting pattern internal diameter is greater than the first step cutting pattern, back-moving spring one end compresses mutually with the bottom face of the first step cutting pattern, and the other end and reducing sleeve offset press-fit.
Further, the locking end of described connecting rod is provided with spline, spline is provided with annular ball grooves makes the spline in locking end form two parts, be provided with the splined hole matched with spline in described reducing sleeve one end and on the sidewall of splined hole, be provided with at least three steel ball holes, steel ball is placed on and fits in steel ball hole and with annular ball grooves and steel ball is placed in the steel ball spacing collar that is made up of upper and lower spacing collar, and described upper and lower spacing snare is put at reducing sleeve outer and be placed in steel ball hole place.
Further, be provided with annular slot in described reducing sleeve end, in this annular slot, be provided with jump ring, be provided with spacing shim in the below of this jump ring, this spacing shim is placed on the end face of the second step cutting pattern.
Further, described upper cap is provided with annular card convex, and described reducing sleeve is positioned at the annular groove being provided with above annular slot and matching with annular card convex, and described annular snap convex clip enters in annular groove makes upper cap be fixedly connected with reducing sleeve.
The invention has the beneficial effects as follows the stopper slot arranging in connecting rod one end and match with five traverse drill chuck electric drills, at the other end fixed transfer cover of connecting rod, owing to being provided with the installation square hole being applicable to the drill bit installing domestic four groove side's handles in reducing sleeve, like this when using the electric drill of external five traverse drill chucks, user, by this reducing sleeve, just can use four groove square shank drill heads of domestic standard; First firmly will from the downward slippage of lock tube during installation, being inserted by four groove square shank drill heads installs in square hole again, now, unclamp from lock tube, self-locking automatically resets under being enclosed within the active force of back-moving spring, and self-locking can be ordered about ball when being enclosed within reset and embeds in ball hole and fit with the locking slot of drill bit side's handle, thus ensure that four groove square shank drill heads and reducing sleeve fix; Just can increase by this reducing sleeve the kind that external five traverse drill chuck electric drills use drill bit, improving electric drill has versatility, reduces the use cost of user.
Accompanying drawing explanation
Fig. 1 is the sectional structure chart of a kind of drill bit reducing sleeve of the embodiment of the present invention
Fig. 2 is the three-dimensional structure diagram connecting pull bar in the embodiment of the present invention
Fig. 3 is the top perspective view of reducing sleeve in the embodiment of the present invention
Fig. 4 is the face upwarding stereogram of reducing sleeve in the embodiment of the present invention
Fig. 5 is the stereogram from lock tube in the embodiment of the present invention
Fig. 6 is the stereogram of upper and lower spacing collar in the embodiment of the present invention
Fig. 7 is the stereogram of a kind of drill bit reducing sleeve of the embodiment of the present invention
Detailed description of the invention
Below in conjunction with accompanying drawing, embodiment of the present invention is described further:
As shown in figs. 1-7, the present invention is a kind of drill bit reducing sleeve, includes connecting rod 1, and this connecting rod 1 one end is provided with the stopper slot 111 matched with five traverse drill chucks of electric drill, and the other end and reducing sleeve 2 fix; The other end of described reducing sleeve 2 is provided with the installation square hole 21 for locking drill bit side's handle matched with drill bit four groove side handle, in this installation square hole 21, two lateral walls is provided with ball hole 22, in this ball hole 22, ball 23 is installed, described ball 23 can embed in ball hole 22 and fit with the locking slot of drill bit side's handle under the driving from lock tube 3, described be nested with outside reducing sleeve 2 from lock tube 3 is mobilizable, back-moving spring 4 is being provided with in lock tube 3, the a set of press-fit that offsets with reducing sleeve 2 of this back-moving spring 4, the other end and the press-fit that offsets from the inwall of lock tube 3; The stopper slot 111 matched with five traverse drill chuck electric drills is set in connecting rod 1 one end, at the other end fixed transfer cover 2 of connecting rod 1, owing to being provided with the installation square hole 21 being applicable to the drill bit installing domestic four groove side's handles in reducing sleeve 2, like this when using the electric drill of external five traverse drill chucks, user, by this reducing sleeve, just can use four groove square shank drill heads of domestic standard; First firmly will from lock tube 3 slippage downwards during installation, being inserted by four groove square shank drill heads installs in square hole 21 again, now, unclamp from lock tube 3, automatically reset under the active force of back-moving spring 4 from lock tube 3, and can order about ball 23 when resetting from lock tube 3 and embed ball hole 22 in and fit with the locking slot of drill bit side's handle, thus guarantee four groove square shank drill heads and reducing sleeve 2 fix; Just can increase by this reducing sleeve the kind that external five traverse drill chuck electric drills use drill bit, improve the versatility of electric drill, reduce the use cost of user.
In the present embodiment, for the ease of fixing from lock tube 3, prevent from ejecting outside reducing sleeve 2 from lock tube 3, described connecting rod 1 includes link 11 and locking end 12, and the external diameter of locking end 12 is less than link 11 and stopper slot 111 is arranged on link 11; Be arranged with lower position block 5 in described locking end 1 with the joint of link 1, fit with lower position block 5 bottom described reducing sleeve 2 one end; Be fixed with upper cap 6 at the other end of described reducing sleeve 2, described be placed between upper cap 6 and lower position block 5 from lock tube 3 and can under external force along the upper and lower displacement of reducing sleeve 2 axis; When mounted lower position block 4 being nested with at the joint of link 11 with locking end 12, lower position block 5 pairs of reducing sleeves 2 just can being utilized to carry out when installing reducing sleeve 2 so spacing; And block 6 is installed in the upper end of reducing sleeve 2, just the stroke of slippage up and down from lock tube 3 can be limited by lower position block 5 and upper cap 6 like this, thus ensure the installation locking of four groove square shank drill heads and be convenient to dismounting, ensure the degree of being connected firmly of drill bit; Certainly, also can not arrange lower position block separately, such as reducing sleeve is set to by lower position block one, reach identical technique effect equally, but adopt integrative-structure, do not utilize production and processing, therefore, the embodiment of the present embodiment is preferred embodiment.
In the present embodiment, four groove square shank drill heads are fixed for the ease of reducing sleeve 2, described includes body 31 from lock tube 3, the through hole 32 that two ends communicate is provided with in body 31, the madial wall of through hole 32 is provided with the first step cutting pattern 33, the internal diameter of the first step cutting pattern 33 and the external diameter of reducing sleeve 2 match, the second step cutting pattern 34 is provided with above the first step cutting pattern 33, the second described step cutting pattern 34 internal diameter is greater than the first step cutting pattern 33, back-moving spring 4 one end compresses mutually with the bottom face of the first step cutting pattern 33, and the other end and reducing sleeve 2 offset press-fit.When the drill bit of four groove side's handles inserts in the installation square hole 21 of reducing sleeve 2, the locking slot that the first step cutting pattern 33 in lock tube 3 body 31 orders about ball 23 and four groove side's handles under the elastic force effect of back-moving spring 4 fits, and four groove square shank drill heads and reducing sleeve 2 so just can be prevented to be separated; And when dismantling drill bit, firmly drive the body 31 from lock tube 3 downwards, now, first step cutting pattern 33 is separated with ball 23, and due to the external diameter of the second step cutting pattern 34 larger than the first step cutting pattern 33, such ball 23 just can have displacement space accordingly, now firmly extracts drill bit again and ball 23 just can be made to be separated with the locking slot on drill bit, thus be convenient to the dismounting of drill bit.
In the present embodiment, for the ease of reducing sleeve 2 and connecting rod 1 synchronous axial system, the locking end 12 of described connecting rod 1 is provided with spline 121, spline 121 is provided with annular ball grooves 122 makes the spline 121 in locking end 12 form two parts, be provided with the splined hole 24 matched with spline 121 in described reducing sleeve 2 one end and on the sidewall of splined hole 24, be provided with at least three steel ball holes 25, steel ball 26 to be placed in steel ball hole 25 and to fit with annular ball grooves 122 and steel ball 26 is placed in by upper, in the steel ball spacing collar 7 that lower limit circle 71 is formed, described is upper, lower limit circle 71 is nested with at reducing sleeve 2 outer and be placed in steel ball hole 25 place, on, lower limit circle 71 shape is identical, by the locking end 12 at connecting rod 1, spline 121 is set, reducing sleeve 2 arranges the splined hole 24 matched with spline 121, in the splined hole 24 that only spline 121 of locking end 12 need be inserted reducing sleeve 2 so when mounted, just can ensure reducing sleeve 2 and connecting rod 1 synchronous interaction, and in order to prevent the locking end 12 of connecting rod 1 and reducing sleeve 2 from coming off mutually, the sidewall of reducing sleeve 2 arranges multiple steel ball hole 25 and steel ball 26 is installed, utilize upper and lower spacing collar 71 to be fixed by steel ball 26 simultaneously, also can be fixed the spline 121 of locking end 12 when preventing steel ball 26 from coming off like this, thus effectively avoid locking end 12 and reducing sleeve 2 to be separated, certainly, locking end 12 also can not adopt spline structure with the fixing of reducing sleeve 2, bearing pin is such as utilized to pass reducing sleeve and locking end, the synchronous interaction of reducing sleeve and connecting rod can be ensured simultaneously, but adopt this structure, its bonding strength is higher, and therefore, the embodiment of the present embodiment is preferred embodiment.
In the present embodiment, in order to prevent coming off from lock tube 3, being provided with annular slot 27 in described reducing sleeve 2 end, in this annular slot 27, being provided with jump ring 28, be provided with spacing shim 29 in the below of this jump ring 28, this spacing shim 29 is placed on the end face of the second step cutting pattern 34; By arranging annular slot 27 on reducing sleeve 2, and jump ring 28 being set in annular slot 27, jump ring 28 pairs of spacing shims 29 so just can being utilized to carry out spacing, just can prevent from coming off from lock tube 3; Certainly, also can not adopt spacing shim 29 and jump ring 28, such as on reducing sleeve 2, be provided with latch, can reach identical object equally, but adopt latch to be unfavorable for installing, therefore, the embodiment of the present embodiment is preferred embodiment.
In the present embodiment, for the ease of the installation of upper cap 6, prevent from exerting oneself to come off in the effect of back-moving spring 4 from lock tube 3, described upper cap 6 is provided with annular card convex 61, described reducing sleeve 2 is positioned at the annular groove 62 being provided with above annular slot 27 and matching with annular card convex 61, and described annular card convex 61 snaps in annular groove 62 and upper cap 6 is fixedly connected with reducing sleeve 2; By arranging annular card convex 61 in upper cap 6, reducing sleeve 2 being arranged on annular groove 62, only annular card convex 61 need being snapped in annular groove 62 when mounted and upper cap 6 and reducing sleeve 2 can be fixed; Certainly, also the fit system of card convex and groove can not be adopted, such as upper cap 6 and reducing sleeve 2 are adopted and be threaded, identical object can be reached equally, but adopt annular card convex and circular groove structure, it is easy for installation, and structure is simple, therefore, the embodiment of the present embodiment is preferred embodiment.
Above-described embodiment should not be considered as limitation of the present invention, but any improvement done based on spirit of the present invention, all should within protection scope of the present invention.
Claims (6)
1. a drill bit reducing sleeve, is characterized in that including connecting rod, and this connecting rod one end is provided with the stopper slot matched with five traverse drill chucks of electric drill, and the other end and reducing sleeve fix; The other end of described reducing sleeve is provided with the installation square hole for locking drill bit side's handle matched with drill bit four groove side handle, in this installation square hole, two lateral walls is provided with ball hole, in this ball hole, ball is installed, described ball can embed in ball hole and fit with the locking slot of drill bit side's handle under the driving from lock tube, described be nested with outside reducing sleeve from lock tube is mobilizable, back-moving spring is being provided with in lock tube, the a set of press-fit that offsets with reducing sleeve of this back-moving spring, the other end and the press-fit that offsets from the inwall of lock tube.
2. a kind of drill bit reducing sleeve according to claim 1, is characterized in that connecting rod includes link and locking end, and the external diameter of locking end is less than link and stopper slot is arranged on link; Be arranged with lower position block at the joint of described locking end and link, fit with lower position block bottom described reducing sleeve one end; Be fixed with upper cap at the other end of described reducing sleeve, described self-locking to be placed between upper cap and lower position block and can under external force along the upper and lower displacement of reducing sleeve axis.
3. a kind of drill bit reducing sleeve according to claim 2, it is characterized in that including body described from lock tube, the through hole that two ends communicate is provided with in body, the madial wall of through hole is provided with the first step cutting pattern, the internal diameter of the first step cutting pattern and the external diameter of reducing sleeve match, the second step cutting pattern is provided with above the first step cutting pattern, the second described step cutting pattern internal diameter is greater than the first step cutting pattern, back-moving spring one end compresses mutually with the bottom face of the first step cutting pattern, and the other end and reducing sleeve offset press-fit.
4. a kind of drill bit reducing sleeve according to claim 3, it is characterized in that the locking end of described connecting rod is provided with spline, spline is provided with annular ball grooves makes the spline in locking end form two parts, be provided with the splined hole matched with spline in described reducing sleeve one end and on the sidewall of splined hole, be provided with at least three steel ball holes, steel ball is placed on and fits in steel ball hole and with annular ball grooves and steel ball is placed in the steel ball spacing collar that is made up of upper and lower spacing collar, and described upper and lower spacing snare is put at reducing sleeve outer and be placed in steel ball hole place.
5. a kind of drill bit reducing sleeve according to claim 4, it is characterized in that described reducing sleeve end is provided with annular slot, in this annular slot, be provided with jump ring, be provided with spacing shim in the below of this jump ring, this spacing shim is placed on the end face of the second step cutting pattern.
6. a kind of drill bit reducing sleeve according to claim 5, it is characterized in that described upper cap is provided with annular card convex, described reducing sleeve is positioned at the annular groove being provided with above annular slot and matching with annular card convex, and described annular snap convex clip enters in annular groove makes upper cap be fixedly connected with reducing sleeve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510014258.1A CN104526654A (en) | 2015-01-12 | 2015-01-12 | Reducing sleeve for drill bits |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510014258.1A CN104526654A (en) | 2015-01-12 | 2015-01-12 | Reducing sleeve for drill bits |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104526654A true CN104526654A (en) | 2015-04-22 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510014258.1A Pending CN104526654A (en) | 2015-01-12 | 2015-01-12 | Reducing sleeve for drill bits |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104526654A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108618813A (en) * | 2018-07-08 | 2018-10-09 | 杭州汇大医疗器械有限公司 | A kind of reamers and its application method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4434859A (en) * | 1981-06-29 | 1984-03-06 | Hilti Aktiengesellschaft | Hammer drill for performing rotary drilling or percussive drilling |
| DE60035450D1 (en) * | 1999-05-08 | 2007-08-23 | Black & Decker Inc | Rotary Hammer |
| CN201816040U (en) * | 2010-08-16 | 2011-05-04 | 林昌方 | Device for connecting and converting MAX or long hexagonal electric hammer |
| CN102922492A (en) * | 2012-10-08 | 2013-02-13 | 方大控股有限公司 | Rotatable chisel jacket assembly |
| CN204997638U (en) * | 2015-01-12 | 2016-01-27 | 方大控股有限公司 | Reducing sleeve for drill bits |
-
2015
- 2015-01-12 CN CN201510014258.1A patent/CN104526654A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4434859A (en) * | 1981-06-29 | 1984-03-06 | Hilti Aktiengesellschaft | Hammer drill for performing rotary drilling or percussive drilling |
| DE60035450D1 (en) * | 1999-05-08 | 2007-08-23 | Black & Decker Inc | Rotary Hammer |
| CN201816040U (en) * | 2010-08-16 | 2011-05-04 | 林昌方 | Device for connecting and converting MAX or long hexagonal electric hammer |
| CN102922492A (en) * | 2012-10-08 | 2013-02-13 | 方大控股有限公司 | Rotatable chisel jacket assembly |
| CN204997638U (en) * | 2015-01-12 | 2016-01-27 | 方大控股有限公司 | Reducing sleeve for drill bits |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108618813A (en) * | 2018-07-08 | 2018-10-09 | 杭州汇大医疗器械有限公司 | A kind of reamers and its application method |
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| SE01 | Entry into force of request for substantive examination | ||
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150422 |
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| WD01 | Invention patent application deemed withdrawn after publication |