CN109262551A - The cutter holding device and electric tool of electric tool - Google Patents
The cutter holding device and electric tool of electric tool Download PDFInfo
- Publication number
- CN109262551A CN109262551A CN201710585195.4A CN201710585195A CN109262551A CN 109262551 A CN109262551 A CN 109262551A CN 201710585195 A CN201710585195 A CN 201710585195A CN 109262551 A CN109262551 A CN 109262551A
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- CN
- China
- Prior art keywords
- cutter
- locking piece
- holding device
- clamping device
- electric tool
- 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.)
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Classifications
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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
- 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)
- Drilling And Boring (AREA)
- Percussive Tools And Related Accessories (AREA)
Abstract
The cutter holding device (10) that the present invention provides a kind of for electric tool, it include: matrix (20), it limits axial direction and circumferential direction with tool mounting hole (22), the tool mounting hole (22)；Cutter locking piece (60) has the hole (26) being passed through in described matrix (20) to engage the engagement state of the cutter；Clamping device locking piece (70), a holder (72) are held in the clamping device locking piece (70) across matrix (20) and extend to the engagement state in the tubular body of the electric tool；It is public to lock or release device, it includes elastic component (74), one end of elastic component (74) abuts holder (72) axially clamping device locking piece (70) is held in its engagement state, the cutter locking piece (60) is held in its engagement state by the other end, and applying on elastic component (74) towards the axial force of one of the cutter locking piece (60) and clamping device locking piece (70) makes another disengaged condition therein.
Description
Technical field
This application involves a kind of cutter holding device of the hand held electric tools such as electric tool, particularly hammer drill,
The invention further relates to the electric tools with above-mentioned cutter holding device.
Background technique
Electric tool, especially hand held electric tool, which all have, is attached cutter for being processed to workpiece, solid
The cutter holding device of stationary knife tool.In order to adapt to have different sizes or type knife handle cutter, cutter holding device may
It needs to dismantle or replace.As an example, common hammer drill generally at least there is only output rotary motion to impact without exporting
The drill jig formula of movement and the hammer drill mode for exporting ballistic motion and rotary motion simultaneously.The drill bit of hammer drill has many size systems
Column, drillstock have many cross-sectional shape series.The drill bit of some special constructions may be needed when hammer drill is used for drilling operation
Or drillstock.
For some hammer drill structures, removes or replacement cutter holding device needs break almost entire cutter holding dress
It sets.The part that structure is complicated due to cutter holding device, includes is more, and it is high to dismantle very inconvenient and cost of serving.
There is also another hammer drills comprising interchangeable cutter holding device.This cutter holding device includes using
In the cutter locking piece that the knife handle of cutter is fastened in cutter holding device and it is used to for cutter holding device being fastened to hammer pipe
On clamping device locking piece further include correspondingly locking or releasing device for locking or removing the first of cutter locking piece
Device is locked or released with unclamping from hammer pipe or dismantling the second of cutter holding device.Including two locking pieces and respective release
Putting device makes cutter holding device structure more complicated, and installation and removal process is more cumbersome.
It wants to provide structure simply and dismantles simple replaceable cutter holding device.
Summary of the invention
The object of the present invention is to provide one kind, and both cutter locking piece and clamping device locking piece to be made to share the same locking
Or the cutter holding device of release device, thus the technical purpose for realizing simplified structure, reducing size and being dismounted easily.
For this purpose, the present invention provides a kind of cutter holding devices for electric tool, comprising: matrix has and is suitable for
The tool mounting hole of the cutter of the electric tool is received, the tool mounting hole limits the axis extended along center axis thereof
To direction and around the circumferential direction extended along center axis thereof；Cutter locking piece has and is passed through the base
Hole in body is to engage the engagement state of the cutter；Clamping device locking piece, a holder make the clamping device locking piece
It is held in across matrix and extends to the engagement state for both making to engage in the tubular body of the electric tool；Public lock
Fixed or release device comprising elastic component, one end of elastic component abut holder axially to keep clamping device locking piece
In its engagement state, the cutter locking piece is held in its engagement state by the other end, is applied on elastic component towards the knife
The axial force of tool locking piece and one of clamping device locking piece makes another in the cutter locking piece and clamping device locking piece
A disengaged condition.
Cutting tool according to the present invention clamping device, cutter locking piece and clamping device locking piece share same lock or release
Device keeps cutter holding device structure simpler, smaller.Release operation only needs a step can be completed, significantly simple
Operation is changed.
The present invention also provides a kind of electric tools including above-mentioned cutter holding device.
Detailed description of the invention
May be better understood from the preferred embodiment of the present application described with reference to the accompanying drawing the above-mentioned of the application and
Other feature and advantage, in which:
Fig. 1 is the partial sectional view of a part of the hammer drill of embodiment according to the present invention, is shown according to this hair
The cutter holding device of bright construction；
Fig. 2 is the engagement schematic diagram of the protection sleeve and matrix of hammer drill according to the present invention；
Fig. 3 is the scheme of installation of the cutter locking piece of hammer drill according to the present invention；
Fig. 4 is the perspective view of the support plate of hammer drill according to the present invention；
Fig. 5 is the partial sectional view of a part of hammer drill according to another embodiment of the present invention.
Specific embodiment
According to the present invention, the cutter locking piece of cutter holding device and clamping device locking piece share one and lock or release
Device, makes that cutter holding device structure is simpler, external dimensions is smaller.In addition, the cutter lock for only needing a step can be completed
Determine the disassembling section of part or clamping device locking piece, the replacement of clamp clamping device is also more convenient.
Hereinafter, by the cutter holding device that the present invention will be described in detail by taking hammer drill as an example.However, technology people in the art
Member is it should be understood that cutter holding device of the invention never only limits and is applied to hammer drill, but can be suitable for a variety of appropriate types
Electric tool, especially hand held electric tool.
Fig. 1 shows the cross-sectional view of a part of hammer drill according to the present invention.The cutter holding dress of hammer drill is shown in Fig. 1
Set the hammer pipe 90 of 10 and hammer drill.
Cutter holding device 10 includes the matrix 20 of tubulose first, limits cutter, the i.e. drill bit for being suitable for receiving hammer drill
The tool mounting hole 22 of (not shown) is formed on the inner surface for limiting tool mounting hole 22 for connecting cutter by key
Knife handle keyway 25.
Tool mounting hole 22 limits rotation axis, in assembly direction D1 be installed to drill bit in tool mounting hole 22, with
And the hammer pipe 90 of hammer drill can be rotated around the rotation axis.In the present invention, it is known as along the direction that the rotation axis extends
Axial direction extends around the rotation axis and is known as circumferential direction perpendicular to the direction of the axial direction.Installation direction
D1 is first axial direction, and in axial direction the direction opposite with installation direction D1 is second axis direction D2.
Matrix 20 includes the first end section 20a positioned at cutter upstream end, it is opposite with first end section 20a and suitable for
Hammer the second end section 20c that pipe 90 engages, and the middle part between first end section 20a and second end section 20c into shape
20b。
In the middle part 20b of matrix 20 include suitable for receiving the clamping jaw hole 24 for clamping the clamping jaw 30 of drill bit, and
Actuation sleeve 40 positioned at the radially face middle part 20b.As above-mentioned, be inserted into the hole 24 of base portion 20 be it is multiple, be usually
The clamping jaw 30 of three drill bits for clamping insertion.After in the tool mounting hole 22 that drill bit is inserted into matrix 20, it is actuated at
The interlude 20b of matrix 20 actuation sleeve 40 that radially face is arranged can make clamping jaw 30 radially clamp drill bit.In addition, such as
Upper described, the protection sleeve pipe 50 of the radially outside setting on the second end section 20c of matrix 20 is fixed to base in the circumferential
Body 20, so 50 synchronous rotary of matrix 20 and protection sleeve pipe.This structure enables the operator to a hand and holds protection sleeve pipe
50, the actuating of another hand is that rotary-actuated casing 40 can be completed the radial clamping of drill bit, structure compared with the prior art, this
Structure operation is got up simpler.
In the present embodiment, protection sleeve 50 is bonded together always in the circumferential with matrix 20, this is shown in Fig. 2 and is connect
The details of conjunction.As shown, protection sleeve 50 includes the bucket portion 52 for accommodating release device and clamping device locking piece of the invention,
The radial extension 54 extended radially inwardly from one end of bucket portion 52, and in the position that bucket portion 52 radially-inwardly biases from radial direction
At least one projection 56 that extension 54 extends along the second axial direction D2.Each projection 56 extends in matrix 20
In the recess formed on section 20b, as shown, in circumferential direction, each projection 56 of protection sleeve 50 is joined to
In a corresponding recess for matrix 20, so that matrix 20 drives protection 50 synchronous rotary of sleeve when rotated.Fig. 2 also shows guarantor
The opening 57 for being configured to actuated piece and passing through on pretective sleeve pipe 50, the opening are located in bucket portion 52.
It further include the cutter locking device for the knife handle of axial restraint cutter on the middle part 20b of matrix 20.Specifically
Ground, matrix 20 include the hole 26 passed through for cutter locking piece 60, and cutter locking piece 60 extends to across hole 26 and is formed in knife handle
In slot on (not shown), so that cutter is relative to 20 axial restraint of matrix.It is preferably adapted to the hole that cutter locking piece 60 passes through
26 extend from the outer of matrix 20 facing towards the inward slant of tool mounting hole 22, hole as it extends on the second axial direction D2
The rotation axis of 26 central axis and cutter extends and in an acute angle with them along direction D2, such as 30 degree.
The generally cylindrical body of cutter locking piece 60 has and is configured for the first end 62 that engages with knife handle and with first
Hold 62 opposite second ends 64.The second end 64 of cutter locking piece 60 passes through and the circumferentially fixed protection sleeve together of matrix 20
50 radial extension 54, and be sticked in support plate 80 by the neck 66 close to second end 64.Wherein Fig. 3 shows branch
The engagement schematic diagram of support plate 80 and cutter locking piece 60, Fig. 4 show the perspective view of support plate 80.
As can be seen from Figure 3, support plate 80 includes general conical portion 82 and the general planar portion 84 that is connected.The general planar
Portion 84 abuts the radial extension 54 of protection sleeve 50, and elastic component 74 is resisted against in general planar portion 84.
Be formed in the general conical portion 82 of support plate 80 mounting hole 81 for installing cutter locking piece 60 and with installation
Hole 81 is connected to and is suitable for engaging the connecting hole 83 of the neck 66 of cutter locking piece 60, and wherein the size of mounting hole 81 is greater than engaging
The size in hole 83.When cutter locking piece 60 is installed, cutter locking piece 60 is first inserted into the hole 26 of matrix 20 and locks cutter
The first end 62 of part engages the knife handle of cutter, so that the mounting hole 81 of support plate 80 is directed at cutter locking piece 60 and installs support plate
80, it is located at the neck 66 of cutter locking piece 60 in the hole 81 of support plate 80, then turning to makes neck 66 enter connecting hole 83.
In addition, support plate 80 has the inner hole 86 for the second end section 20c for being suitable for receiving matrix 20, the inner hole is being limited
Include on 86 inner peripheral surface keyway 88 (Fig. 4), it is corresponding, in the corresponding position of the outer peripheral surface of 20 second end section 20c of matrix
With pairing keyway 27, key 87 (being shown in FIG. 5) is suitable for being received by keyway 88 and keyway 27 (being shown in FIG. 5), from
And support plate 80 can with 20 synchronous rotary of matrix and can axially move.
Matrix 20 includes the protection sleeve 50 positioned at radially face on its second end section 20c, is located at protection sleeve
50 inner radial and the clamping device locking device for being used to for cutter holding device 10 of the invention being locked to hammer pipe 90, with
And it is released for discharging or unclamping the single, public of either or both of above-mentioned cutter locking device and clamping device locking device
Put device.The public release device also serves as that cutter locking piece 60 is locked in its bonding station and is locked clamping device and fills
The clamping device locking piece 70 set is locked in the public locking device of its bonding station, is hereafter referred to as public locking or releases
Put device.
It include clamping device locking piece 70, shape by the clamping device locking device that cutter holding device 10 is locked to hammer pipe 90
At on the base 20 and pass through matrix 20 thickness locking piece hole 29, and be formed on hammer pipe 90 and from hammer pipe 90
The recessed recessed portion 67 in outer surface.The clamping device locking piece 70 for being configured as sphere in the present embodiment passes through the lock of matrix 20
Determine part hole 29 to extend in the recessed portion 67 of hammer pipe 90, the matrix 20 of cutter holding device 10 and hammer pipe 90 are locked together.
In this way, the hammer drill cutter that matrix 20 is bonded together together with the mode of being connected by key is synchronous when hammer pipe 90 is rotated by driving
Rotation.Holder 72 is sleeved on matrix 20 and clamping device locking piece 70 and is retained in above-mentioned engagement state.
As above-mentioned, the public device that locks or release is also accommodated in protection sleeve 50.Specifically, public locking or
Release device includes elastic component 74, and one end of elastic component 74 axially abuts holder 72, and the other end is resisted against support plate 80
In general planar portion 84.Protection sleeve 50, which also has, to be suitable for operating the public actuated piece for locking or releasing device and can pass through
Opening 57.
Holder 72 is held in axial position identical with clamping device locking piece 70 by the elastic force of elastic component 74 itself
It place and abuts clamping device locking piece 70 and is in clamping device locking piece 70 and make matrix 20 and hammer pipe 90 into shape to lock together
Bonding station.Direction of insertion against cutter pushes holder 72 along the second axial direction D2, elastic component 74 against from
The elastic force of body is compressed to allow holder 72 to be moved axially away from the abutting with clamping device locking piece 70, thus matrix 20, with
And thus cutter holding device 10 can be disengaged from the hammer pipe 90 of hammer drill.
As described above, support plate 80 is axially fixed to protection by the general planar portion 84 that elastic component 74 is resisted against support plate 80
Sleeve 50, and then fixed cutting tool locking piece 60.In axial direction D1 pulls protection sleeve 50 to make support plate 80 and protection sleeve 50
Both in axial direction D1 is mobile, or is applied by the actuated piece of the opening 57 on protection sleeve 50 to elastic component 74
Axial force in this direction makes support plate 80 with the in axial direction D1 movement of elastic component 74, and cutter locking piece 60 can be made in base
The knife handle for withdrawing and being separated from cutter in the hole 26 of body 20 reaches release cutter locking piece 60 and then releases the axis of the knife handle of cutter
To the purpose of locking.
Herein, actuated piece can be any known actuated piece known in the art, such as spanner, iron wire, metal
Hook etc., or can be the finger of operator.
As described above, operator, which operates the opening 57 that actuated piece or the finger of oneself pass through on protection sleeve 50, to be held very much
It changes places and stirs holder 72 or elastic component 74 along the second axial direction D2, so that holder 72 makes along the second axial direction D2 displacement
Clamping device locking piece 70 is moved away from its bonding station, to realize the mesh for removing entire cutter holding device 10 from hammer pipe 90
's；In axial direction D1 pulls protection sleeve 50 or directly applies in axial direction D1 on elastic component 74 as above-mentioned operator
Axial force, can be realized the release of cutter locking piece 60.This single public device that locks or release realizes release as a result,
The dual purpose of cutter locking piece 60 and clamping device locking piece 70, structure is simpler, the external dimensions quilt of cutter holding device
Reduce, operation is also simpler, and required cost is correspondingly minimized.
In addition, needing externally actuated part to pass through opening on protection sleeve 50 for the dismounting of cutter holding device 10
Mouth 57 is just able to achieve, and this effectively avoids the generations of maloperation.
The novel aspects of cutting tool according to the present invention clamping device are described by reference to Fig. 1-4 above.It is described above
Embodiment in, holder 72 is provided as integrated annular element.However, it will be understood to one skilled in the art that can
In the case where realizing identical function, holder 72 can be by being formed separated from each other the multiple part structures being then attached to together
At.For example, Fig. 5 shows such a preferred embodiment.
In Fig. 5, holder 72 include be adapted to abut against clamping device locking piece 70 the first part 722 and be located at this first
The second part 724 being attached together outside part with it.The two can be formed with identical or different material, such as can achieve
The purpose for reducing cost, reducing price difficulty.
In addition, it will be understood to one skilled in the art that being suitble to the hammer drill model using cutter holding device of the invention
SDS-plus is included but are not limited to, the drillstock of the drill bit suitable for being used together with cutter holding device of the invention includes but not
It is only limitted to round, rectangular or hexagon drillstock.
The present invention has been based on several preferred embodiments and is shown and described, but the present invention is not limited to show in figure
The details that is outlined above of sum.On the contrary, can be with without departing from the spirit and scope limited by appended claims
It carry out various modifications or makes a variation.
Claims (10)
1. a kind of cutter holding device (10) for electric tool, comprising:
Matrix (20) has the tool mounting hole (22) for the cutter for being suitable for receiving the electric tool, the tool mounting hole
(22) axial direction extended along center axis thereof is limited and around the circumferential direction extended along center axis thereof；
Cutter locking piece (60) has the hole (26) being passed through in described matrix (20) to engage the engagement of the cutter
State；
Clamping device locking piece (70), a holder (72) are held in the clamping device locking piece (70) across matrix (20)
And extend to the engagement state for engaging the two in the tubular body of the electric tool；
It is public to lock or release device comprising elastic component (74), one end of elastic component (74) axially abut holder (72)
Clamping device locking piece (70) is held in its engagement state, the cutter locking piece (60) is held in its engagement by the other end
State applies the axial force towards one of the cutter locking piece (60) and clamping device locking piece (70) on elastic component (74)
Make another disengaged condition in the cutter locking piece (60) and clamping device locking piece (70).
2. cutter holding device (10) according to claim 1, wherein the public device that locks or release is placed in
In one protection sleeve (50), the protection sleeve (50) circumferentially engages described matrix (20) and rotates therewith, the knife
Have locking piece (60) and passes through described sleeve pipe sleeve (50).
3. cutter holding device (10) according to claim 2, wherein the cutter holding device (10) further includes circumferential direction
Ground engagement described matrix (20) and the support plate (80) rotated therewith, the support plate (80) described in the axial direction is by the elasticity
Part (74) is pressed against on the protection sleeve (50).
4. cutter holding device (10) according to claim 3, wherein the cutter locking piece (60) passes through the protection
Both casing (50) and support plate (80), and be fastened on the support plate (80).
5. cutter holding device (10) according to claim 4, wherein the cutter locking piece (60) has engagement cutter
First end (62) and opposite second end (64), the cutter locking piece (60) is provided with neck near the second end
(66), the neck (66) is engaged in the connecting hole (83) being formed on the support plate (80).
6. cutter holding device (10) according to claim 5, wherein the support plate (80) further includes engaging with described
Hole (83) connection and size are greater than the mounting hole (81) of the connecting hole (83).
7. cutter holding device (10) according to claim 1 to 6, wherein act on elastic component (74)
, be applied to by external actuator from the cutter locking piece (60) towards the axial force of the clamping device locking piece (70)
In at least one of protection sleeve pipe (50) and elastic component (74)；And/or act on it is on elastic component (74), from the clamping device
The axial force of locking piece (70) towards the cutter locking piece (60) is applied to holder (72) and elasticity by external actuator
On at least one of part (74).
8. cutter holding device (10) according to claim 7, wherein the protection sleeve (50) includes allowing the cause
The opening (57) that moving part passes through.
9. cutter holding device (10) according to claim 1 to 8, wherein the holder (72) is constructed
Integral part or multiple parts by dividually manufacturing and being attached together are constituted；And/or the locking piece is spherical parts；
And/or the actuated piece is the finger of pulling part, hook or operator.
10. a kind of electric tool, including cutter holding device according to claim 1 to 9 (10), it is preferable that
The electric tool is hand held electric tool, such as hammer drill.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710585195.4A CN109262551B (en) | 2017-07-18 | 2017-07-18 | Tool holding device for electric tool and electric tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710585195.4A CN109262551B (en) | 2017-07-18 | 2017-07-18 | Tool holding device for electric tool and electric tool |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109262551A true CN109262551A (en) | 2019-01-25 |
| CN109262551B CN109262551B (en) | 2021-07-27 |
Family
ID=65152809
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710585195.4A Active CN109262551B (en) | 2017-07-18 | 2017-07-18 | Tool holding device for electric tool and electric tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109262551B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113696143A (en) * | 2021-08-23 | 2021-11-26 | 博世电动工具（中国）有限公司 | Drill bit clamping device, electric tool and drill bit clamping device assembling method thereof |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2286351A (en) * | 1994-01-21 | 1995-08-16 | Bosch Gmbh Robert | Tool holder |
| DE4419826A1 (en) * | 1994-06-07 | 1995-12-14 | Bosch Gmbh Robert | Tool holder for a hand drill, in particular for a hammer drill, and hand drill with tool holder |
| CN1142427A (en) * | 1995-06-23 | 1997-02-12 | 日立工机株式会社 | Tool holding apparatus for impact tool machine |
| CN1189792A (en) * | 1995-06-07 | 1998-08-05 | 动力工具霍德尔斯公司 | Lever actuated keyless chuck |
| CN1332661A (en) * | 1998-11-12 | 2002-01-23 | 布莱克-德克尔公司 | Chuck, bit, assembly thereof and methods of mounting |
| CN103648727A (en) * | 2011-05-16 | 2014-03-19 | 罗伯特·博世有限公司 | Tool holder |
| CN103894650A (en) * | 2012-12-27 | 2014-07-02 | 株式会社牧田 | Impact tool |
| CN104275685A (en) * | 2013-07-03 | 2015-01-14 | 博世电动工具（中国）有限公司 | Tool clamping device and hand-held electric tool including the tool clamping device |
| CN105798849A (en) * | 2014-12-29 | 2016-07-27 | 博世电动工具（中国）有限公司 | Hand-held electric tool |
-
2017
- 2017-07-18 CN CN201710585195.4A patent/CN109262551B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2286351A (en) * | 1994-01-21 | 1995-08-16 | Bosch Gmbh Robert | Tool holder |
| DE4419826A1 (en) * | 1994-06-07 | 1995-12-14 | Bosch Gmbh Robert | Tool holder for a hand drill, in particular for a hammer drill, and hand drill with tool holder |
| CN1189792A (en) * | 1995-06-07 | 1998-08-05 | 动力工具霍德尔斯公司 | Lever actuated keyless chuck |
| CN1142427A (en) * | 1995-06-23 | 1997-02-12 | 日立工机株式会社 | Tool holding apparatus for impact tool machine |
| CN1332661A (en) * | 1998-11-12 | 2002-01-23 | 布莱克-德克尔公司 | Chuck, bit, assembly thereof and methods of mounting |
| CN103648727A (en) * | 2011-05-16 | 2014-03-19 | 罗伯特·博世有限公司 | Tool holder |
| CN103894650A (en) * | 2012-12-27 | 2014-07-02 | 株式会社牧田 | Impact tool |
| CN104275685A (en) * | 2013-07-03 | 2015-01-14 | 博世电动工具（中国）有限公司 | Tool clamping device and hand-held electric tool including the tool clamping device |
| CN105798849A (en) * | 2014-12-29 | 2016-07-27 | 博世电动工具（中国）有限公司 | Hand-held electric tool |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113696143A (en) * | 2021-08-23 | 2021-11-26 | 博世电动工具（中国）有限公司 | Drill bit clamping device, electric tool and drill bit clamping device assembling method thereof |
| CN113696143B (en) * | 2021-08-23 | 2023-08-11 | 博世电动工具（中国）有限公司 | Bit clamping device, electric tool and assembling method of bit clamping device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109262551B (en) | 2021-07-27 |
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