CN100400242C - Tool holder - Google Patents
Tool holder Download PDFInfo
- Publication number
- CN100400242C CN100400242C CNB038113783A CN03811378A CN100400242C CN 100400242 C CN100400242 C CN 100400242C CN B038113783 A CNB038113783 A CN B038113783A CN 03811378 A CN03811378 A CN 03811378A CN 100400242 C CN100400242 C CN 100400242C
- Authority
- CN
- China
- Prior art keywords
- controls
- peg
- hole
- introducing
- radially
- 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
Links
- 230000007246 mechanism Effects 0.000 claims abstract description 16
- 238000007789 sealing Methods 0.000 claims description 20
- 238000005553 drilling Methods 0.000 claims description 6
- 238000009527 percussion Methods 0.000 claims description 5
- 239000000463 material Substances 0.000 abstract description 10
- 230000037431 insertion Effects 0.000 abstract 3
- 238000003780 insertion Methods 0.000 abstract 3
- 238000011109 contamination Methods 0.000 abstract 1
- 239000002184 metal Substances 0.000 description 7
- 230000005540 biological transmission Effects 0.000 description 5
- 230000000903 blocking effect Effects 0.000 description 5
- 230000008901 benefit Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 239000013536 elastomeric material Substances 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 230000000284 resting effect Effects 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25D—PERCUSSIVE TOOLS
- B25D17/00—Details of, or accessories for, portable power-driven percussive tools
- B25D17/08—Means for retaining and guiding the tool bit, e.g. chucks allowing axial oscillation of the tool bit
- B25D17/084—Rotating chucks or sockets
- B25D17/088—Rotating chucks or sockets with radial movable locking elements co-operating with bit shafts specially adapted therefor
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Percussive Tools And Related Accessories (AREA)
Abstract
The invention relates to a tool holder (10), in particular for a hammer drill or chisel drill. Said holder comprises an insertion opening (14) for receiving a tool shaft (16), at least one actuator (22) for axially locking or releasing the tool shaft (16) in the insertion opening (14), said actuator (22) being displaced between a locked position and a released position, in addition to at least one clamping mechanism (34-44) for clamping the actuator (22) in the released position and/or in the locked position. The invention is characterised in that the clamping mechanism (34-44) is covered radially on its exterior relative to the insertion opening (14) by a cover (46), in order to prevent contamination and wear by abraded material.
Description
Technical field
The present invention relates to especially for the hammer of drilling machine or percussion drill and toolroom machine with this hammer.
Background technology
By the known a kind of hammer that is used for drilling machine or percussion drill of DE 10001191C2, this chuck can make a pad realize axially interlocking with given end play.For this reason, this hammer have can radially move, the roll forming blocking element, this element radially occupy in the flute profile depression that is embedded on the inner position on the pad outer circumference surface at one, thereby vertically pad is locked, radially be in outside the above blocking element of position at one and then discharge this pad, make pad to be introduced into or to be removed.
In addition, known hammer has a controls that is sleeve shaped, this controls surrounds blocking element outside, and can pass vertically at the interlocking position of workpiece one side with between the releasing interlocking position of instrument one side by the user, so that pad is interlocked or discharged, wherein controls can carry out bias voltage by a spring on the direction of the interlocking position of workpiece one side.
On the releasing interlocking position of controls, blocking element can radially move outwardly in this, thereby the handle that can make tool is extracted or introduced wherein from introducing port simply.
In contrast, on the interlocking position of controls, the motion of the radial deflection of blocking element then is subjected to the locking of the controls of sleeve shaped, thereby pad is locked vertically.
The drilling machine HR4000C that Makita company produces also has a kind of like this hammer, can so realize a kind of one-hand control in addition: can remove on the interlocking position and can locked by a locking mechanism by axially movable controls.The user also can be pushed into controls vertically with a hand and remove the interlocking position from interlocking position, make controls be locked in this place.The user can pack pad into or takes out and do not need to hold controls in this process with the same hand then.The controls of sleeve shaped being locked in here on the releasing interlocking position realized that by a peg that can radially move this peg can freely contact on the lateral surface of hammer, thus suffering the material chip, thus cause heavy wear.
Summary of the invention
The present invention comprises general technical conceive, protects the locking mechanism of controls locking usefulness exactly by the method that covers, and makes locking mechanism not suffer the material chip, thereby causes reducing wearing and tearing.
The used nappe of locking mechanism for example can have a sealing ring, and it surrounds locking mechanism outside, and wherein the most handy a kind of elastomeric material of sealing circle is made.Its advantage is: sealing ring can set up simply, and owing to its intrinsic elasticity is fixed.
But also have a kind of possibility, exactly the nappe of locking mechanism is integrated into movably in the controls, with the interlocking of implementation tool handle or remove interlocking.Under the situation of the controls that adopts sleeve shaped, can achieve the goal by following measure according to aforesaid background technology: locking mechanism is placed in the inside of sleeve shaped controls.Here, controls self has also just formed a part of the nappe of locking mechanism.
This modification that proposes according to the present invention, the controls of sleeve shaped can move axially in the cramping body upper edge of a hollow cylinder usually, and wherein, pad in this cramping body clamping.In the case advantageously: the controls of sleeve shaped encases this cramping body at least on one of two terminations of cramping body, the difficulty so that the inside that makes the material chip enter into the sleeve shaped controls becomes.Axially displaceable controls is exactly preferably to be attached to slidably on the outer circumference surface of cramping body with one of two termination, so that realize the sealing for controls, and prevents that the material chip from entering.
For the sealing function between the outer circumference surface that further improves sleeve shaped controls and cramping body, controls can have a scraper plate (Abstreifer), this scraper plate abuts on the outer circumference surface of cramping body, but and when the sleeve shaped controls is mobile vertically the scrape material chip, this material chip often is attached on the outer circumference surface of cramping body.
A preferred construction form that proposes according to the present invention, the locking of the controls of sleeve shaped realize that by a peg this peg can radially move basically with respect to the intake of hammer.This peg can occupy a latched position or an off-position selectively at this, wherein this peg is locked in the sleeve shaped controls on the interlocking position vertically, thereby make the user introduce the hole or must not hold controls when take out in the hole in that pad is packed into, thereby can realize comfortable one-hand control from introducing.On the off-position, the sleeve shaped controls is then not locked, therefore is movable in its resting position, and this generally realizes by a kind of spring force.
Preferably peg itself is by a spring element imposed load, just in case the user does not take this peg the off-position to from latched position by manual operations, this spring element will remain in the latched position by this peg so.
Here, the power transmission of nail can directly realize from the spring element to the select.But, the power transmission from the spring element to the peg preferably is achieved through a force transmission element indirectly, to realize good power transmission.Described force transmission element for example can be a spheroid, and this sphere supports can radially be carried out pretension inwardly by spring element in a radial hole.
The spring element that applies pretension to peg for example can be a kind of leaf spring, and certain a kind of ring spring also is fit to.
A preferred form of implementation that proposes according to the present invention, the latched position of peg radially is in the inside with respect to introducing Kong Eryan, and the off-position of peg radially is in the outside with respect to introducing Kong Ze.Peg radially moves from outside to inside with respect to introducing the hole when carrying out the transition to the latched position from the off-position in this case.
Certainly also have another kind of alternative scheme, the latched position of peg radially is in the outside with respect to introducing the hole, and the off-position of peg radially is in the inside with respect to introducing Kong Ze in contrast.According to this replacement scheme, peg radially from inside to outside moves with respect to introducing Kong Ze when carrying out the transition to the interlocking position from the off-position.
According to a preferred form of implementation of the present invention, in order to realize the locking of sleeve shaped controls, peg is supported on the cramping body one with respect to introducing in the guide hole that radially extends in the hole, thereby fixes vertically with respect to cramping body.Therefore, peg can not move when the sleeve shaped controls moves vertically yet.
By above-mentioned form of implementation, the peg that is in the latched position is embedded in the latch elements that is arranged on the sleeve shaped controls, and this latch elements for example can be a undercut position or a clamping hole.
In this case, the sleeve shaped controls is preferably in the groove that has to extend vertically on its medial surface, and wherein peg has a head, and this head can be guided in this groove vertically.Like this, can prevent moving radially of peg in the outside of the releasing interlocking position of sleeve shaped controls.In contrast, on the releasing interlocking position of sleeve shaped controls, this groove then allows bolt-lock to move on the latched position, thereby vertically the sleeve shaped controls is locked.
But also having another replaceable scheme, is exactly for locking bushing shape controls, and peg is bearing on the controls one with respect to introducing the aperture in the guide hole that extends, therefore also servo-actuated vertically of this peg when the sleeve shaped controls moves axially.
In addition, the present invention also comprises a kind of toolroom machine of being furnished with a hammer of the present invention, and wherein this toolroom machine for example is a kind of drilling machine or percussion drill.
Description of drawings
Other advantage is the description of drawings of face as follows.In these accompanying drawings, embodiments of the invention have been shown.Accompanying drawing, specification and claims have comprised many combined feature.Those skilled in the art preferably also can treat these features individually, and these features are carried out other combination consciously.
Accompanying drawing is represented:
Fig. 1 is according to a kind of cross-sectional view that is used for the hammer of a drilling machine of the present invention, and this hammer has a sleeve shaped controls, be in the interlocking position,
Fig. 2 hammer shown in Figure 1, wherein the sleeve shaped controls is in and removes on the interlocking position,
Fig. 3 is the peg guiding detailed view of hammer as illustrated in fig. 1 and 2,
Another detailed view of Fig. 4 peg guiding shown in Figure 3.
The specific embodiment
The cross-sectional view of Fig. 1 and 2 represents to be used for a hammer 10 of a percussion drill, this hammer is partly by traditional design, so for the explanation below replenishing, the patent documentation DE 10001191C2 that must address referring to the front, its content joins in this explanation comprehensively.
Hammer 10 has a cramping body 12 that is the hollow cylinder column basically, and the pad 16 that this cramping body has 14, one drill bits in introducing hole of a tubular can be incorporated in this introducing hole vertically, so that drill bit is locked on the hammer 10.
The locking of pad 16 in introducing hole 14 realized by the locking member 18 of a plurality of roller shapes, and this locking member can radially be arranged in the respective through hole on the wall of cramping body 12 versatilely.These through holes here radially dwindle inwardly gradually with respect to intake 14, inwardly drop out from through hole when pad 16 takes out from introduce hole 14 so that prevent locking member 18.
The locking of pad 16 so realizes: locking member 18 is embedded in the groove 20 that extends vertically on the outer circumference surface of pad 16, causes pad 16 to be fixed in the hammer 10 with a kind of given end play.Therefore, the end play of described locking is that the ratio of the length by locking member 18 and groove 20 is determined.
In addition, hammer 10 has a kind of controls 22 of sleeve shaped, and this controls can move at the interlocking position shown in Fig. 1 with between the releasing interlocking position shown in Fig. 2 on the outer circumference surface of cramping body 12.
A helical spring 24 acts on the controls 22, this spring is round controls 22 and cramping body 12, wherein helical spring 24 1 sides are supported on the ring 26 on the flange of cramping body 12, and opposite side is supported on the radial projection position 28 on the lateral surface of controls 22.Helical spring 24 just is pressed into controls 22 in the interlocking position shown in Fig. 1, and on this position, pad 16 is locked on the hammer 10 vertically.
On the interlocking position shown in Fig. 1, thereby controls 22 stops locking member 18 may radially be offset the cancellation interlocking outwardly with its medial surface.Here the medial surface of controls 22 is close to the outer circumference surface of cramping body 12 with flushing.
If the user overcomes the power of helical spring 24 now controls 22 is pushed in the releasing interlocking position shown in Fig. 2, just then an annular pocket 30 on the sleeve shaped controls 22 is in the through hole top of locking member 18 outside.Therefore, locking member 18 can radially be offset on the releasing interlocking position of controls 22 outwardly, thereby can easily pad 16 be extracted from introduce hole 14 vertically, perhaps is introduced in this introducing hole.
Settled a rubber sealing ring 32 in the depression 30 of controls 22, it is fitted on the outer circumference surface of cramping body 12, and the slit between controls 22 and the cramping body 12 is sealed, and enters so that prevent material chip and foul.
In addition, hammer 10 also so can be realized comfortable one-handed performance: controls 22 is locked in removes on the interlocking position.Its advantage is: although carry out bias voltage for helical spring 24, the user must not be fixed on controls 22 on the described releasing interlocking position yet.
Here, peg 34 moves in the latched position and realizes by two ring springs 40,42, these two springs are disposed in the plane round this controls on the lateral surface of controls 22 in the form of a ring, extend with the longitudinal axis of introducing hole 14 with meeting at right angles on this plane, and wherein two ring springs 40,42 keep a determining deviation vertically each other.
Described two ring springs 40,42 radially abut on the metal ball body 44 from the outside, and this spheroid is positioned on the controls 22 one guide hole that radially extends, and wherein metal ball body 44 can radially move in this guide hole.Metal ball body 44 used guide holes radially dwindle inwardly gradually, make metal ball body 44 be unlikely inwardly and drop out from controls 22.On the releasing interlocking position shown in Fig. 2, two ring springs 40,42 radially are pressed onto metal ball body 44 inwardly on the peg heads 38, thus with peg 34 radially towards being built on the latched position.
The locking of peg 34 is so removed, exactly pad 16 is pressed into vertically and introduces in the hole 14 in so much, make the inner end side surface that occupy of pad 16 be pressed against on the free end of peg 34, thereby make radially pressurized outwardly of peg 34, finally be in again in the plane of guide groove 36 up to peg heads 38.So peg heads 38 is no longer blocked the drain tank of guide groove 36, thereby helical spring 24 is pressed to the interlocking position shown in Fig. 1 with controls 22 vertically.
At last, hammer has an O-ring seal 46 of making of rubber, the sealing circle surrounds this controls in the end of instrument one side of controls 22, and guide hole, peg 34 on wherein said two ring springs 40,42 and metal ball body 44, the controls 22 are all covered.Sealing ring 46 can prevent that here material chip or foul from entering into controls 22.
In contrast on the end of its workpiece one side, sealing ring 46 have one radially outstanding inwardly around the protruding part, this protruding part is in the state that assembles in the groove of the circle annular on the lateral surface of controls 22, and sealing ring 46 just is fixed on the controls 22 vertically like this.
The present invention is not limited to several preferred embodiment recited above.Can consider some kinds of modification and alternative or rather, therefore they also can also can fall in the protection domain by being utilized according to design of the present invention.
Reference numerals list
10 hammers
12 cramping bodies
14 introduce the hole
16 pads
18 locking members
Groove on 20 pads
22 controls
24 helical springs
26 rings
28 protruding parts
Depression on 30 controls
32 sealing rings
34 pegs
36 guide grooves
38 peg heads
40 ring springs
42 ring springs
44 metal ball body
46 sealing rings
48 leaf springs
Claims (12)
1. hammer (10), this hammer has: an introducing hole (14) that is used for a pad of clamping (16); At least one is used for making pad (16) axially to interlock in introducing hole (14) or controls (22)-wherein controls (22) of releasing interlocking can move between an interlocking position and a releasing interlocking position; Be used for being locked on the releasing interlocking position controls (22) and/or at least one the locking mechanism (34-44 on the interlocking position; 48), it is characterized in that locking mechanism (34-44; 48) introducing hole (14) is relatively radially covered by a nappe (46) outside, wherein this nappe (46) has an elastic seal ring, the sealing circle radially is covered with locking mechanism (34-44) outside at least in part with respect to introducing hole (14), be provided with rubber sealing ring (32), this rubber sealing ring is placed on the outer circumference surface of cramping body (12) and covers gap between this controls (22) and this cramping body (12).
2. by the described hammer of claim 1 (10), it is characterized in that, controls has one with respect to introducing the axially displaceable sleeve in hole, wherein, this sleeve is the part that is used for the nappe of locking mechanism (48), and radially is covered with locking mechanism (48) outside with respect to introducing the hole.
3. by claim 1 or 2 described hammers (10), it is characterized in that controls (22) has one with respect to introducing the axially displaceable sleeve in hole (14); Locking mechanism (34-44; 48) have one with respect to introducing the peg (34) that hole (14) can radially be moved, wherein, in order on the direction of a latched position, peg (34) to be carried out bias voltage and a spring element (40,42,48) to be set at least.
4. by the described hammer of claim 3 (10), it is characterized in that described spring element is a kind of ring spring (40,42) or a kind of leaf spring (48).
5. by the described hammer of claim 3 (10), it is characterized in that, with respect to introducing hole (14) radially at peg (34) and spring element (40,42,48) settled one to be used for power being delivered to transmitting element (44) on the peg (34) between from spring element (40,42,48).
6. by the described hammer of claim 4 (10), it is characterized in that transmitting element (44) is spherical.
7. by the described hammer of claim 5 (10), it is characterized in that transmitting element (44) is spherical.
8. by the described hammer of claim 3 (10), it is characterized in that peg (34) is fixed vertically with respect to introducing hole (14), and can radially move, wherein, sleeve has a latch elements for peg (34) form fit being locked in with connecting on the releasing interlocking position.
9. by the described hammer of claim 8 (10), it is characterized in that sleeve has one with respect to introducing the groove (36) that extend vertically in hole (14), peg (34) radially is bearing in this groove regularly with respect to introducing hole (14).
10. by the described hammer of claim 1 (10), it is characterized in that the sealing circle is attached on the outer circumference surface of cramping body (12) with sealing lip.
11., it is characterized in that described hammer (10) is used for drilling machine or percussion drill by the described hammer of claim 1 (10).
12. toolroom machine, it has by each described hammer (10) in the claim 1 to 11.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE2002143288 DE10243288B4 (en) | 2002-09-18 | 2002-09-18 | tool holder |
| DE10243288.0 | 2002-09-18 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1652902A CN1652902A (en) | 2005-08-10 |
| CN100400242C true CN100400242C (en) | 2008-07-09 |
Family
ID=32009840
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB038113783A Expired - Fee Related CN100400242C (en) | 2002-09-18 | 2003-05-30 | Tool holder |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP1542835B1 (en) |
| JP (1) | JP2005538858A (en) |
| CN (1) | CN100400242C (en) |
| DE (1) | DE10243288B4 (en) |
| WO (1) | WO2004028751A1 (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102005000097A1 (en) * | 2005-07-28 | 2007-02-01 | Hilti Ag | Impact tool holder |
| DE102009028890B4 (en) * | 2009-08-26 | 2014-11-20 | Hilti Aktiengesellschaft | tool holder |
| DE102010062583A1 (en) * | 2010-12-08 | 2012-06-14 | Robert Bosch Gmbh | Hand-held power tool e.g. fretsaw has rotary sealing disk that is seated on and connected to rotor shaft, such that sealing disk is arranged between ball bearing and gear component |
| DE102011075858A1 (en) * | 2011-05-16 | 2012-11-22 | Robert Bosch Gmbh | Tool holder for portable machine tool, particular hand tool e.g. hammer drill, has actuating medium, which allows suppression of limiting range of motion of one fixing unit |
| US20170036330A1 (en) * | 2014-04-22 | 2017-02-09 | Maxtech Consumer Products Limited | Quick-connect chuck mechanism for screwdriver bits and the like |
| JP6479388B2 (en) * | 2014-09-29 | 2019-03-06 | Ntn株式会社 | Chuck structure |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3421811A1 (en) * | 1984-06-12 | 1985-12-12 | Hilti Ag, Schaan | Tool holder for drilling and chiselling appliances |
| US5709391A (en) * | 1995-09-06 | 1998-01-20 | Makita Corporation | Bit mounting device |
| JP2000117662A (en) * | 1998-10-08 | 2000-04-25 | Makita Corp | Bit fixing device for portable tool |
| DE10002749A1 (en) * | 2000-01-22 | 2001-08-02 | Bosch Gmbh Robert | Hand tool |
| US20010043841A1 (en) * | 1999-11-15 | 2001-11-22 | Wienhold James L. | Locking quick-change chuck assembly |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4340728C1 (en) * | 1993-11-30 | 1995-01-26 | Bosch Gmbh Robert | Device on powered hand tools for the rotary driving of tools |
| DE10001191C2 (en) * | 2000-01-14 | 2002-04-04 | Bosch Gmbh Robert | Hand tool with a striking and / or rotating tool holder |
-
2002
- 2002-09-18 DE DE2002143288 patent/DE10243288B4/en not_active Expired - Fee Related
-
2003
- 2003-05-30 WO PCT/DE2003/001769 patent/WO2004028751A1/en active Application Filing
- 2003-05-30 JP JP2004538675A patent/JP2005538858A/en active Pending
- 2003-05-30 CN CNB038113783A patent/CN100400242C/en not_active Expired - Fee Related
- 2003-05-30 EP EP03740049.6A patent/EP1542835B1/en not_active Expired - Lifetime
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3421811A1 (en) * | 1984-06-12 | 1985-12-12 | Hilti Ag, Schaan | Tool holder for drilling and chiselling appliances |
| US5709391A (en) * | 1995-09-06 | 1998-01-20 | Makita Corporation | Bit mounting device |
| JP2000117662A (en) * | 1998-10-08 | 2000-04-25 | Makita Corp | Bit fixing device for portable tool |
| US20010043841A1 (en) * | 1999-11-15 | 2001-11-22 | Wienhold James L. | Locking quick-change chuck assembly |
| DE10002749A1 (en) * | 2000-01-22 | 2001-08-02 | Bosch Gmbh Robert | Hand tool |
Also Published As
| Publication number | Publication date |
|---|---|
| DE10243288A1 (en) | 2004-04-15 |
| EP1542835B1 (en) | 2013-07-17 |
| CN1652902A (en) | 2005-08-10 |
| DE10243288B4 (en) | 2013-02-21 |
| WO2004028751A1 (en) | 2004-04-08 |
| EP1542835A1 (en) | 2005-06-22 |
| JP2005538858A (en) | 2005-12-22 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| 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: 20080709 Termination date: 20140530 |