CN104275685A - Tool clamping device and hand-held electric tool including the tool clamping device - Google Patents
Tool clamping device and hand-held electric tool including the tool clamping device Download PDFInfo
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- CN104275685A CN104275685A CN201310279617.7A CN201310279617A CN104275685A CN 104275685 A CN104275685 A CN 104275685A CN 201310279617 A CN201310279617 A CN 201310279617A CN 104275685 A CN104275685 A CN 104275685A
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- hollow cylinder
- column type
- type hollow
- held electric
- hand held
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- 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
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- 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
- B25F5/00—Details or components of portable power-driven tools not particularly related to the operations performed and not otherwise provided for
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Auxiliary Devices For Machine Tools (AREA)
- Drilling And Boring (AREA)
Abstract
The invention relates to a tool clamping device for a hand-held electric tool. The tool clamping device comprises a first cylindrical hollow barrel and a second cylindrical hollow barrel, one part of one of the first cylindrical hollow barrel and the second cylindrical hollow barrel can be inserted into the other one of the first cylindrical hollow barrel and the second cylindrical hollow barrel in a sliding mode, and the first cylindrical hollow barrel and the second cylindrical hollow barrel define the space used for containing one part of a tool of the hand-held electric tool. The invention further relates to the hand-held electric tool including the tool clamping device. According to the tool clamping device and the hand-held electric tool including the tool clamping device, the idle hammering phenomenon can still be avoided in the unloaded state even though the tool with the clamping part being longer than the clamping part of a standard tool is used in the hand-held electric tool, hence, tool abrasion can be slowed down, and the service life of the hand-held electric tool is prolonged.
Description
Technical field
The present invention relates to electric tool, particularly relate to a kind of cutter holding device and comprise the hand held electric tool of this cutter holding device.
Background technology
The hand held electric tool of such as electric pick or electric hammer etc. utilizes the piston of axially reciprocating to produce periodically variable air pressure, to order about jump bit and to impact bolt to clash into the clamping part of cutter, thus impulsive force is delivered on cutter so as to carry out cutting a hole in the such as stiff materials such as building walls or floor, the operation such as brill.
EP2239100A2 discloses a kind of hand held electric tool, and it comprises the tube-like piece be arranged on steam vent in hand held electric tool main casing.At one end, the piston of axially reciprocating is housed in tube-like piece; At the other end, be equipped with in tube-like piece can axially reciprocating jump bit and impact bolt.Steam vent on tube-like piece is between piston and jump bit.The sleeve that can slide thereon is housed outside tube-like piece.Sleeve has the drive pin extended to through the kidney slot on tube-like piece in tube-like piece near the side of jump bit.Tube-like piece is equipped with the cutter holding device for holding cutter at the end away from piston.When hand held electric tool to contact with Seeding location be in load condition time, cutter moves in the axial direction, and promotes to impact bolt and also moves in the axial direction.Now, impact bolt contacts with drive pin and promotes sleeve and moves, thus makes the steam vent on sleeve closes tube-like piece, to form airtight space between jump bit and piston in tube-like piece.Thus, impulsive force can be transmitted to cutter by this airtight space.Under the Light Condition that hand held electric tool and Seeding location depart from, sleeve moves apart the position that tube-like piece is provided with steam vent under the effect of back-moving spring, steam vent is communicated with external environment, airtight space is disappeared, thus no longer transmits impulsive force to cutter.
In above-mentioned existing hand held electric tool, cutter holding device is integral structure, and its length axially cannot change.As the clamping minister of the clamping part of cutter that hand held electric tool uses than the cutter of standard, under the Light Condition that hand held electric tool and Seeding location depart from, the clamping part of cutter and impacting not have between bolt enough gaps, even may an interference distance.Owing to not having enough gaps or interference distance, sleeve can not move apart the position that tube-like piece is provided with steam vent under the effect of back-moving spring, and even jump bit can not move apart the position that tube-like piece is provided with steam vent.Thus, even if in the unloaded state, in tube-like piece, also there is airtight space all the time between jump bit and piston.As a result, in the unloaded state, still transmit impulsive force by this airtight space to cutter, this phenomenon is called as " empty hammer ".Empty hammer not only accelerates the wearing and tearing of cutter, and shortens the service life of hand held electric tool.
Thus, need especially to improve its cutter holding device existing hand held electric tool, thus improve its compatibility to cutter.
Summary of the invention
Object of the present invention will overcome above-mentioned at least one defect of the prior art exactly, a kind of cutter holding device is proposed, this cutter holding device has the compatibility of improvement, even if can prevent from when clamping has the cutter of the clamping part of the clamping minister than standard cutter occurring empty hammer phenomenon in the unloaded state, thus slow down the wearing and tearing of cutter, and extend the service life of hand held electric tool.
For this reason, according to an aspect of the present invention, a kind of cutter holding device for hand held electric tool is provided, comprises:
First column type hollow cylinder;
Second column type hollow cylinder;
Wherein, the part of one in described first column type hollow cylinder and described second column type hollow cylinder can be inserted in another slidably, and described first column type hollow cylinder and described second column type hollow cylinder are defined for the space of a part for the cutter holding described hand held electric tool.
Preferably, one in described first column type hollow cylinder and described second column type hollow cylinder can gapless be slidably inserted in another.
Preferably, described cutter holding device also comprises at least one connecting pin, one in described first column type hollow cylinder and described second column type hollow cylinder is provided with the connecting hole for partly holding described connecting pin, another in described first column type hollow cylinder and described second column type hollow cylinder is provided with axially extended elongated slot accordingly, the described connecting pin be contained in described connecting hole partly extends in described elongated slot, described first column type hollow cylinder and the second column type hollow cylinder relative to each other axially can be slided under the guiding of described connecting pin and described elongated slot.
Preferably, the length of described elongated slot is chosen under described hand held electric tool is in load condition, and described connecting pin does not directly contact with the end of described elongated slot.Preferably, described cutter holding device also comprises the retaining ring for being remained on by described connecting pin in described connecting hole.
Preferably, described cutter holding device also comprises the snap ring being arranged on described connecting hole both sides, for described retaining ring being held in place regularly.
Preferably, the first end of described first column type hollow cylinder can gapless be slidably inserted in the relative first end of described second column type hollow cylinder, described connecting hole for partly holding described connecting pin is arranged on described second column type hollow cylinder, and described axially extended elongated slot is arranged on described first column type hollow cylinder.
Preferably, described cutter holding device also comprises the retaining ring for being remained on by described connecting pin in described connecting hole.
Preferably, described cutter holding device also comprises the circumferential recess being arranged on and described second column type hollow cylinder being positioned at described connecting hole both sides, and described circumferential recess is respectively used to lay the snap ring described retaining ring be held in place regularly.
Preferably, described elongated slot does not penetrate the inwall of described first column type hollow cylinder.
Preferably, the diapire of described elongated slot is provided with the through hole of the inwall penetrating described first column type hollow cylinder.
Preferably, described first column type hollow cylinder is also formed and is used for the through hole of clamping element of clamp-on tool and the circumferential recess for laying snap ring for partly holding, the described clamping element retaining ring remained in described through hole is fixed in place for making by described snap ring.
Preferably, described first column type hollow cylinder is also formed with the circumferential recess of the end cap for laying hand held electric tool.
Preferably, described second column type hollow cylinder is also formed for described second column type hollow cylinder being fixed to fixing hole on the tube-like piece of described hand held electric tool and circumferential recess.
Preferably, the internal diameter of the various piece of described first column type hollow cylinder and described second column type hollow cylinder is selected to applicable holding cutter.
Preferably, described hand held electric tool is electric hammer or electric pick.
According to a further aspect of the invention, provide a kind of hand held electric tool, described hand held electric tool comprises cutter holding device as above.
Preferably, second end of described second column type hollow cylinder is inserted in the tube-like piece of described hand held electric tool, steady pin extends in the fixing hole on the second column type hollow cylinder through the through hole on described tube-like piece, retaining ring to be arranged on outside described tube-like piece and for being held in place by described steady pin, snap ring is placed in the described circumferential recess on described second column type hollow cylinder, described retaining ring to be held in place on described tube-like piece.
Preferably, the outer wall of described tube-like piece is circumferentially provided with end difference, and the inwall of described retaining ring is circumferentially provided with the end difference matched with described end difference.
Preferably, the retaining ring in the through hole for being remained on by clamping element on described first column type hollow cylinder is provided with between the procapsid and described first column type hollow cylinder of described hand held electric tool, and lay for described retaining ring is fixed snap ring in place in circumferential recess on described first column type hollow cylinder, thus described procapsid and described first column type hollow cylinder are kept together regularly.
Preferably, remain to regularly on described first column type hollow cylinder during the end cap of described hand held electric tool snaps onto on described first column type hollow cylinder circumferential recess by its circumferential inward flange.
According to the present invention, because cutter holding device is made up of two parts that can slide relative to each other, the axial length of cutter holding device can regulate.Even if adopt during the cutter of the clamping part of the clamping minister had than standard cutter at hand held electric tool and also there will not be empty hammer phenomenon in the unloaded state, thus the wearing and tearing of cutter can be slowed down, and extend the service life of hand held electric tool.
Accompanying drawing explanation
Fig. 1 is the exploded perspective view of cutter holding device according to the preferred embodiment of the invention;
Fig. 2 is the cross-sectional view of the hand held electric tool of the cutter holding device that the preferred embodiment of the present invention is housed, and wherein, hand held electric tool adopts standard cutter and under being in load condition;
Fig. 3 is the view similar with Fig. 2, but intercepts along different cross sections with the structure showing hand held electric tool more in detail;
Fig. 4 is the cross-sectional view of the hand held electric tool of the cutter holding device that the preferred embodiment of the present invention is housed, and wherein, hand held electric tool adopts standard cutter and under being in Light Condition;
Fig. 5 is the cross-sectional view of the hand held electric tool of the cutter holding device that the preferred embodiment of the present invention is housed, wherein, hand held electric tool adopt the clamping part with clamping minister than standard cutter cutter and under being in Light Condition;
Fig. 6 is the cross-sectional view of the hand held electric tool of the cutter holding device that the preferred embodiment of the present invention is housed, wherein, hand held electric tool adopt the clamping part with clamping minister than standard cutter cutter and under being in load condition; And
Fig. 7 is the close-up schematic view of Fig. 3, shows the connection between the second column type hollow cylinder of cutter holding device of the present invention and the tube-like piece of hand held electric tool.
Detailed description of the invention
Below by exemplary embodiments thereof, the present invention is described.It is noted that it will be understood by those skilled in the art that following examples only provide the one exemplary embodiment about cutter holding device of the present invention for simplicity's sake by way of example, it does not also mean that and carries out any restriction to the present invention.
As shown in Figure 1, cutter holding device 1 comprises the first column type hollow cylinder 3 and the second column type hollow cylinder 5 according to the preferred embodiment of the invention.The external diameter of the first end 3a of the first column type hollow cylinder 3 is selected to the internal diameter of the relative first end 5a being equal to or less than the second column type hollow cylinder 5, and the first end 3a of the first column type hollow cylinder 3 can be inserted in the relative first end 5a of the second column type hollow cylinder 5.Preferably, the external diameter of the first end 3a of the first column type hollow cylinder 3 is selected to the internal diameter of the relative first end 5a substantially equaling the second column type hollow cylinder 5, and the first end 3a of the first column type hollow cylinder 3 can gapless be slidably inserted in the relative first end 5a of the second column type hollow cylinder 5.The first end 3a of the first column type hollow cylinder 3 is axially formed with at least one elongated slot 3b, has three elongated slot 3b in a preferred embodiment and circumference along the first column type hollow cylinder 3 is uniformly distributed.The relative first end 5a of the second column type hollow cylinder 5 is formed with connecting hole 5b accordingly.Second column type hollow cylinder 5 is also formed with the circumferential recess 5c laying respectively at connecting hole 5b both sides.
When assembling, as shown in Figures 2 and 3, the first end 3a of the first column type hollow cylinder 3 is inserted in the relative first end 5a of the second column type hollow cylinder 5, to be placed in connecting hole 5b and partly to extend in the elongated slot 3b on the first column type hollow cylinder 3 with the sizable connecting pin 7 of the connecting hole 5b on the second column type hollow cylinder 5.Then, retaining ring 9 is placed in the position the second column type hollow cylinder 5 being provided with connecting hole 5b, to be remained in connecting hole 5b and elongated slot 3b by connecting pin 7.Finally, then two snap rings 11 are snapped in two circumferential recess 5c on the second column type hollow cylinder 5, thus retaining ring 9 and the second column type hollow cylinder 5 are held in place regularly.Like this, the first column type hollow cylinder 3 and the second column type hollow cylinder 5 relative to each other axially can slide under the guiding of connecting pin 7 and elongated slot 3b.
As Figure 1-3, in order to prevent connecting pin 7 from coming off from the elongated slot 3b the first column type hollow cylinder 3, elongated slot 3b does not penetrate the inwall of the first column type hollow cylinder 3.Because hand held electric tool in use can produce more dust usually, dust can permeate and deposit on elongated slot 3b, thus hinders the first column type hollow cylinder 3 and the second column type hollow cylinder 5 sliding axially relative to each other.For this reason, the through hole 3c of the inwall penetrating the first column type hollow cylinder 3 can be set on the diapire of elongated slot 3b.Certainly, elongated slot 3b also can penetrate the inwall of the first column type hollow cylinder 3, but on elongated slot 3b sidewall, is formed with step or protuberance so that support and connection pin 7 slidably.
The internal diameter of the various piece of the first column type hollow cylinder 3 and the second column type hollow cylinder 5 can be selected according to existing mode with applicable holding cutter.First column type hollow cylinder 3 the second end annex be also formed for partly hold be used for the such as ball of clamp-on tool or cylindrical clamping element through hole 3d, lay the circumferential recess 3e of snap ring and lay the circumferential recess 3f of end cap of hand held electric tool.Second column type hollow cylinder 5 is also formed for the second column type hollow cylinder 5 being fixed to fixing hole 5d on the tube-like piece of hand held electric tool and circumferential recess 5e at the second end annex.
Although in above preferred embodiment, the first end 3a of the first column type hollow cylinder 3 is inserted in the relative first end 5a of the second column type hollow cylinder 5, and on the first column type hollow cylinder, be provided with elongated slot, and the second column type hollow cylinder is provided with locating hole, but be understood that, also the first end 5a of the second column type hollow cylinder 5 can be arranged to insert in the first end 3a of the first column type hollow cylinder 3, and on the second column type hollow cylinder, be provided with elongated slot, and the first column type hollow cylinder is provided with locating hole.
The hand held electric tool comprising cutter holding device of the present invention is described in detail below in conjunction with Fig. 2 and 3.
For simplicity, in Fig. 2 and 3 and accompanying drawing 4-6, part same as the prior art is not shown.The hand held electric tool 20 that the cutter holding device 1 of the preferred embodiment of the present invention is housed is comprised main casing 21 and is supported on the tube-like piece 25 in main casing 21 by supporting component 23 in a known manner.At one end (in figure right side), the piston (not shown) of axially reciprocating is housed in tube-like piece 25.At the other end, be equipped with in tube-like piece can axially reciprocating jump bit 27 and impact bolt 29.Steam vent 31 on tube-like piece is between piston and jump bit 27.The control sleeve 33 that can slide is equipped with in the outside of tube-like piece 25 thereon.Control sleeve 33 is provided with intermediate sleeve 35.Intermediate sleeve 35 kidney slot 37 be provided through on tube-like piece 25 extends to the drive pin 39 in tube-like piece 25.Certainly, control sleeve 33 to form with intermediate sleeve 35.At the back-moving spring 41 controlling also to be provided with outside sleeve 33 for promoting to control sleeve 33 movement together with intermediate sleeve 35.
As shown in Figure 3 and 7, the second end of the second column type hollow cylinder 5 is inserted in tube-like piece 25, and steady pin 43 extends in the fixing hole 5d on the second column type hollow cylinder 5 through the through hole 45 on tube-like piece 25.Retaining ring 47 to be arranged on outside tube-like piece 25 and for being held in place by steady pin 43.Be placed in snap ring 49 in the circumferential recess 5e on the second column type hollow cylinder 5 for retaining ring 47 being held in place on tube-like piece 25.Reliably fix relative to tube-like piece 25 in order to ensure the second column type hollow cylinder 5, the outer wall of tube-like piece 25 can circumferentially be provided with end difference 25a, and the inwall of retaining ring 47 is then circumferentially provided with the end difference 47a matched with the end difference 25a on the outer wall of tube-like piece 25.The support ring 51 against the flange 47b in retaining ring 47 is had in the arranged outside of retaining ring 47.Support ring 51 is for supporting one end of back-moving spring 53.Certainly, support ring 51 can form with retaining ring 47.
Hand held electric tool 20 also comprises procapsid 54, such as ball or cylindrical clamping element 57 remain in the through hole 3d on the first column type hollow cylinder 3 by the retaining ring 55 be arranged between procapsid 54 and the first column type hollow cylinder 3, and clamping element 57 is radially inwardly extruded, with clamp-on tool when needed.Through hole 3d on first column type hollow cylinder 3 is dimensioned to and clamping element 57 can be exposed in the inner chamber of the first column type hollow cylinder 3 at least in part but can not comes off from through hole 3d.Retaining ring 55 one end is against the flange 54a extended internally of procapsid 54, and the other end is against locating ring 59, and locating ring 59 is held in place regularly by the snap ring 61 in the circumferential recess 3e be placed on the first column type hollow cylinder 3.Hand held electric tool 20 can also comprise end cap 63, and end cap 63 is snapped onto by its circumferential inward flange 63a in the circumferential recess 3f on the first column type hollow cylinder 3 and remains to regularly on the first column type hollow cylinder 3.Like this, procapsid 54, first column type hollow cylinder 3 and end cap 63 are kept together regularly, thus can move together.The other end of above-mentioned back-moving spring 53 is supported on procapsid 54.Therefore, under the effect of back-moving spring 53, the first column type hollow cylinder 3 axially can slide relative to the second column type hollow cylinder 5 together along with procapsid 54.
Below with reference to Fig. 2-4, the situation that hand held electric tool 20 adopts standard cutter 65 is described.
Fig. 2 is the cross-sectional view of the hand held electric tool of the cutter holding device that the preferred embodiment of the present invention is housed, and wherein, hand held electric tool adopts standard cutter and under being in load condition.Fig. 3 is the view similar with Fig. 2, but intercepts along different cross sections with the structure showing hand held electric tool more in detail.When cutter 65 is in load condition against Seeding location, cutter 65 moves right under axial force F effect, when the left end of the axial slender groove 65a that cutter 65 moves on cutter 65 contacts with clamping element 57, cutter 65 by overcome back-moving spring 53 effect promote procapsid 54 along with the first column type hollow cylinder 3 from left-most position (namely, position when connecting pin 7 contacts with the low order end of the elongated slot 3b on the first column type hollow cylinder 3) move right, until cutter 65 also promotes to impact bolt 29 arrive its right-most position as described above, namely, the position of bolt 29 is impacted when moving to the rightmost side in the kidney slot 37 of drive pin 39 on tube-like piece 25.In the process that cutter 65 promotion impact bolt 29 moves right, impact bolt 29 promotes jump bit 27 and moves right and promote to move right in the kidney slot 37 of drive pin 39 on tube-like piece 25, until impact bolt 29 to arrive its right-most position.The moving right by intermediate sleeve 35 and control sleeve 33 compression reseting spring 41 of drive pin 39, thus make control sleeve 33 move to position residing for steam vent 31, close steam vent 31, thus form airtight space by jump bit 27, tube-like piece 25 and piston (not shown).Like this, just impulsive force can be transmitted by this airtight space to cutter 65 when piston movement.In order to reduce to impact the reaction force that produces when bolt 29 promotes drive pin 39 and reduce the wearing and tearing impacting bolt 29 and drive pin 39, can arrange to be enclosed within and impact with the rubber ring 29a impacting bolt 29 movement on bolt 29, and be arranged in tube-like piece 25, drive pin 39 extends to wherein and with the rubber ring 39a of drive pin 39 movement.
The length of the elongated slot 3b on the first column type hollow cylinder 3 can be chosen to contact with the high order end of the elongated slot 3b on the first column type hollow cylinder 3 when impacting connecting pin 7 when bolt 29 arrives its right-most position.But preferably, the high order end of the elongated slot 3b that the length of the elongated slot 3b on the first column type hollow cylinder 3 can be chosen to when impact bolt 29 arrives its right-most position on connecting pin 7 and the first column type hollow cylinder 3 keeps certain interval, as shown in Figure 3.Like this, even if at load condition, connecting pin 7 also not with the ends contact of the elongated slot 3b on the first column type hollow cylinder 3, connecting pin 7 can not be subject to cutter 65 impulsive force transmitted by the first column type hollow cylinder 3, thus can extend the service life of connecting pin 7.Fig. 4 is the cross-sectional view of the hand held electric tool of the cutter holding device that the preferred embodiment of the present invention is housed, and wherein, hand held electric tool adopts standard cutter and under being in Light Condition.In the process changed to Light Condition by load condition, cutter 65 separating operation position.By clamping element 57, back-moving spring 53 promotes the first column type hollow cylinder 3 and cutter 65 along with procapsid 54 and moves to left-most position together.Now, connecting pin 7 contacts with the low order end of the elongated slot 3b on the first column type hollow cylinder 3.Between cutter 65 and impact bolt 29, occur space because cutter 65 is moved to the left, jump bit 27 also can promote to impact bolt 29 and be moved to the left.Meanwhile, promoted to control sleeve 33 by the back-moving spring 41 compressed and be moved to the left, open the steam vent 31 on tube-like piece 25.Like this, jump bit 27, tube-like piece 25 and piston no longer form airtight space.Thus, impulsive force is not just had to be delivered to cutter 65.
Below with reference to Fig. 5 and 6, the situation that hand held electric tool 20 adopts the cutter 65 of the clamping part of the clamping minister had than standard cutter is described.
Fig. 5 is the cross-sectional view of the hand held electric tool of the cutter holding device that the preferred embodiment of the present invention is housed, wherein, hand held electric tool adopt the clamping part with clamping minister than standard cutter cutter and under being in Light Condition.The situation of standard cutter is similar with adopting, and the first column type hollow cylinder 3 is moved to left-most position in the effect of back-moving spring 53.First column type hollow cylinder 3 can be exactly the maximum admissible length of clamping part than the clamping minister of standard cutter of non-standard cutting tool relative to the ultimate range d of the second column type hollow cylinder 5 movement.This distance makes when adopting clamping part can guarantee cutter 65 and impact between bolt 29 to there is a gap g than during cutter within d of the scope of the clamping minister of standard cutter, this gap can guarantee jump bit 27 and control sleeve 33 to move to the position that the steam vent 31 on tube-like piece 25 is opened, thus guarantees do not have impulsive force to be delivered to cutter 65 in the unloaded state.
Fig. 6 is the cross-sectional view of the hand held electric tool of the cutter holding device that the preferred embodiment of the present invention is housed, wherein, hand held electric tool adopt the clamping part with clamping minister than standard cutter cutter and under being in load condition.Be understood that, adopt the hand held electric tool of the cutter of the clamping part of the clamping minister had than standard cutter in the loaded state, the movement of all parts of hand held electric tool is mobile substantially similar with all parts in the hand held electric tool of the employing standard cutter described with reference to Fig. 2 and 3.But it should be noted, Fig. 6 in fact show hand held electric tool and adopts clamping part to have the cutter of maximum admissible length.In this case, when load, cutter 65 moving right under responsive to axial force just can be eliminated cutter 65 and be impacted the gap g existed between bolt 29, promotes to impact bolt 29 and arrives its right-most position as described above.The moving right by intermediate sleeve 35 and control sleeve 33 compression reseting spring 41 of drive pin 39, thus make control sleeve 33 move to position residing for steam vent 31, close steam vent 31, thus form airtight space by jump bit 27, tube-like piece 25 and piston (not shown).Like this, just impulsive force can be transmitted to cutter 65 by this airtight space.In this process, the first column type hollow cylinder 3 is still in left-most position and can not moves right.
Although hand held electric tool adopt standard cutter and under being in load condition time back-moving spring 53 can play to a certain extent reduce vibration effect, but when hand held electric tool adopts the cutter of the clamping part of the clamping minister had than standard cutter and is under load condition, clamping element 57 can be in the position do not contacted with the left end of axial slender groove 65a in the axial slender groove 65a on cutter 65, can play the effect suppressing further to vibrate like this by the vibration reduced between cutter 65 and clamping element 57.
Below in conjunction with specific embodiments to invention has been detailed description.Clearly, above description and embodiment illustrated in the accompanying drawings all should be understood to be exemplary, but not limitation of the present invention.To those skilled in the art, being readily appreciated that, can carrying out various modification or amendment when not departing from spirit of the present invention to it, these modification or amendment all do not depart from the scope of the present invention.
Claims (21)
1. the cutter holding device for hand held electric tool (1), comprising:
First column type hollow cylinder (3);
Second column type hollow cylinder (5);
Wherein, the part of one in described first column type hollow cylinder (3) and described second column type hollow cylinder (5) can be inserted in another slidably, and described first column type hollow cylinder (3) and described second column type hollow cylinder (5) are defined for the space of a part for the cutter holding described hand held electric tool.
2. cutter holding device (1) as claimed in claim 1, is characterized in that, one in described first column type hollow cylinder (3) and described second column type hollow cylinder (5) can gapless be slidably inserted in another.
3. cutter holding device (1) as claimed in claim 1, it is characterized in that, also comprise at least one connecting pin (7), one in described first column type hollow cylinder (3) and described second column type hollow cylinder (5) is provided with the connecting hole for partly holding described connecting pin (7), another in described first column type hollow cylinder (3) and described second column type hollow cylinder (5) is provided with axially extended elongated slot accordingly, the described connecting pin (7) be contained in described connecting hole partly extends in described elongated slot, described first column type hollow cylinder (3) and the second column type hollow cylinder (5) relative to each other axially can be slided under the guiding of described connecting pin (7) and described elongated slot (3b).
4. cutter holding device (1) as claimed in claim 3, it is characterized in that, the length of described elongated slot (3b) is chosen under described hand held electric tool is in load condition, and described connecting pin (7) does not directly contact with the end of described elongated slot (3b).
5. cutter holding device (1) as claimed in claim 3, is characterized in that, also comprising the retaining ring (9) for being remained on by described connecting pin (7) in described connecting hole.
6. cutter holding device (1) as claimed in claim 5, is characterized in that, also comprise the snap ring (11) being arranged on described connecting hole both sides, for described retaining ring (9) being held in place regularly.
7. cutter holding device (1) as claimed in claim 3, it is characterized in that, the first end (3a) of described first column type hollow cylinder (3) can gapless be slidably inserted in the relative first end (5a) of described second column type hollow cylinder (5), described connecting hole (5b) for partly holding described connecting pin (7) is arranged on described second column type hollow cylinder (5), and described axially extended elongated slot (3b) is arranged on described first column type hollow cylinder (3).
8. cutter holding device (1) as claimed in claim 7, is characterized in that, also comprising the retaining ring (9) for being remained on by described connecting pin (7) in described connecting hole (5b).
9. cutter holding device (1) as claimed in claim 8, it is characterized in that, also comprise the circumferential recess (5c) being arranged on and described second column type hollow cylinder (5) being positioned at described connecting hole (5b) both sides, described circumferential recess (5c) is respectively used to lay the snap ring (11) described retaining ring (9) be held in place regularly.
10. cutter holding device (1) as claimed in claim 7, it is characterized in that, described elongated slot (3b) does not penetrate the inwall of described first column type hollow cylinder (3).
11. cutter holding devices (1) as claimed in claim 10, is characterized in that, the diapire of described elongated slot (3b) are provided with the through hole (3c) of the inwall penetrating described first column type hollow cylinder (3).
12. cutter holding devices (1) as claimed in claim 7, it is characterized in that, described first column type hollow cylinder (3) is also formed and is used for the through hole (3d) of clamping element of clamp-on tool and the circumferential recess (3e) for laying snap ring for partly holding, described snap ring is used for making the retaining ring remained in described through hole (3d) by described clamping element fix in place.
13. cutter holding devices (1) as claimed in claim 7, is characterized in that, described first column type hollow cylinder (3) are also formed with the circumferential recess (3f) of the end cap for laying hand held electric tool.
14. cutter holding devices (1) as claimed in claim 7, it is characterized in that, described second column type hollow cylinder (5) being also formed for described second column type hollow cylinder (5) being fixed to fixing hole (5d) on the tube-like piece of described hand held electric tool and circumferential recess (5e).
15. cutter holding devices (1) as claimed in claim 1, is characterized in that, the internal diameter of the various piece of described first column type hollow cylinder (3) and described second column type hollow cylinder (5) is selected to applicable holding cutter.
16. cutter holding devices (1) as claimed in claim 1, is characterized in that, described hand held electric tool (20) is electric hammer or electric pick.
17. 1 kinds of hand held electric tools (20), is characterized in that, described hand held electric tool comprise as arbitrary in claim 1-16 as described in cutter holding device (1).
18. hand held electric tools (20) as claimed in claim 17, it is characterized in that, when described hand held electric tool comprises cutter holding device as claimed in claim 14 (1), second end of described second column type hollow cylinder (5) is inserted in the tube-like piece (25) of described hand held electric tool (20), steady pin (43) extends in the fixing hole (5d) on the second column type hollow cylinder (5) through the through hole (45) on described tube-like piece (25), retaining ring (47) be arranged on described tube-like piece (25) outside and for described steady pin (43) is held in place, snap ring (49) is placed in the described circumferential recess (5e) on described second column type hollow cylinder (5), so that described retaining ring (47) is held in place on described tube-like piece (25).
19. hand held electric tools (20) as claimed in claim 18, it is characterized in that, the outer wall of described tube-like piece (25) is circumferentially provided with end difference (25a), and the inwall of described retaining ring (47) is circumferentially provided with the end difference (47a) matched with described end difference (25a).
20. hand held electric tools (20) as claimed in claim 17, it is characterized in that, when described hand held electric tool comprises cutter holding device as claimed in claim 12 (1), the retaining ring (55) in the through hole (3d) for being remained on by clamping element (57) on described first column type hollow cylinder (3) is provided with between procapsid (54) in described hand held electric tool (20) and described first column type hollow cylinder (3), and lay for by fixing for described retaining ring (55) snap ring (61) in place in circumferential recess (3f) on described first column type hollow cylinder (3), thus described procapsid (54) and described first column type hollow cylinder (3) are kept together regularly.
21. hand held electric tools (20) as claimed in claim 17, it is characterized in that, when described hand held electric tool comprises cutter holding device as claimed in claim 13 (1), the end cap (63) of described hand held electric tool (20) to be snapped onto by its circumferential inward flange (63a) in the circumferential recess (3f) on described first column type hollow cylinder (3) and remains to regularly on described first column type hollow cylinder (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310279617.7A CN104275685B (en) | 2013-07-03 | 2013-07-03 | Cutter holding device and the hand held electric tool for including this cutter holding device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310279617.7A CN104275685B (en) | 2013-07-03 | 2013-07-03 | Cutter holding device and the hand held electric tool for including this cutter holding device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104275685A true CN104275685A (en) | 2015-01-14 |
| CN104275685B CN104275685B (en) | 2018-07-31 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310279617.7A Active CN104275685B (en) | 2013-07-03 | 2013-07-03 | Cutter holding device and the hand held electric tool for including this cutter holding device |
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| Country | Link |
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| CN (1) | CN104275685B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109262551A (en) * | 2017-07-18 | 2019-01-25 | 博世电动工具（中国）有限公司 | The cutter holding device and electric tool of electric tool |
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|---|---|---|---|---|
| CN1030543A (en) * | 1986-12-17 | 1989-01-25 | 希尔蒂股份公司 | Hand controlling tools apparatus |
| CN1551816A (en) * | 2001-09-17 | 2004-12-01 | 密尔沃基电动工具公司 | Rotary hammer |
| US20080035360A1 (en) * | 2004-10-28 | 2008-02-14 | Makita Corporation | Electric power tool |
| CN102729225A (en) * | 2012-07-12 | 2012-10-17 | 南京德朔实业有限公司 | Quick clamping mechanism |
| CN103042506A (en) * | 2011-10-17 | 2013-04-17 | 南京德朔实业有限公司 | Clamping device |
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2013
- 2013-07-03 CN CN201310279617.7A patent/CN104275685B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1030543A (en) * | 1986-12-17 | 1989-01-25 | 希尔蒂股份公司 | Hand controlling tools apparatus |
| CN1551816A (en) * | 2001-09-17 | 2004-12-01 | 密尔沃基电动工具公司 | Rotary hammer |
| US20080035360A1 (en) * | 2004-10-28 | 2008-02-14 | Makita Corporation | Electric power tool |
| CN103042506A (en) * | 2011-10-17 | 2013-04-17 | 南京德朔实业有限公司 | Clamping device |
| CN102729225A (en) * | 2012-07-12 | 2012-10-17 | 南京德朔实业有限公司 | Quick clamping mechanism |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109262551A (en) * | 2017-07-18 | 2019-01-25 | 博世电动工具（中国）有限公司 | The cutter holding device and electric tool of electric tool |
| CN109262551B (en) * | 2017-07-18 | 2021-07-27 | 博世电动工具（中国）有限公司 | Tool holding device for electric tool and electric tool |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104275685B (en) | 2018-07-31 |
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