CN110394769A - Electric tool - Google Patents
Electric tool Download PDFInfo
- Publication number
- CN110394769A CN110394769A CN201810371235.XA CN201810371235A CN110394769A CN 110394769 A CN110394769 A CN 110394769A CN 201810371235 A CN201810371235 A CN 201810371235A CN 110394769 A CN110394769 A CN 110394769A
- Authority
- CN
- China
- Prior art keywords
- impact portion
- unloading position
- electric tool
- power source
- resetting
- 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.)
- Granted
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25D—PERCUSSIVE TOOLS
- B25D11/00—Portable percussive tools with electromotor or other motor drive
- B25D11/005—Arrangements for adjusting the stroke of the impulse member or for stopping the impact action when the tool is lifted from the working surface
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25D—PERCUSSIVE TOOLS
- B25D11/00—Portable percussive tools with electromotor or other motor drive
- B25D11/04—Portable percussive tools with electromotor or other motor drive in which the tool bit or anvil is hit by an impulse member
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25D—PERCUSSIVE TOOLS
- B25D16/00—Portable percussive machines with superimposed rotation, the rotational movement of the output shaft of a motor being modified to generate axial impacts on the tool bit
-
- 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
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25D—PERCUSSIVE TOOLS
- B25D2216/00—Details of portable percussive machines with superimposed rotation, the rotational movement of the output shaft of a motor being modified to generate axial impacts on the tool bit
- B25D2216/0007—Details of percussion or rotation modes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25D—PERCUSSIVE TOOLS
- B25D2216/00—Details of portable percussive machines with superimposed rotation, the rotational movement of the output shaft of a motor being modified to generate axial impacts on the tool bit
- B25D2216/0007—Details of percussion or rotation modes
- B25D2216/0023—Tools having a percussion-and-rotation mode
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25D—PERCUSSIVE TOOLS
- B25D2217/00—Details of, or accessories for, portable power-driven percussive tools
- B25D2217/0011—Details of anvils, guide-sleeves or pistons
- B25D2217/0015—Anvils
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25D—PERCUSSIVE TOOLS
- B25D2217/00—Details of, or accessories for, portable power-driven percussive tools
- B25D2217/0011—Details of anvils, guide-sleeves or pistons
- B25D2217/0019—Guide-sleeves
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25D—PERCUSSIVE TOOLS
- B25D2250/00—General details of portable percussive tools; Components used in portable percussive tools
- B25D2250/191—Ram catchers for stopping the ram when entering idling mode
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25D—PERCUSSIVE TOOLS
- B25D2250/00—General details of portable percussive tools; Components used in portable percussive tools
- B25D2250/371—Use of springs
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25D—PERCUSSIVE TOOLS
- B25D2250/00—General details of portable percussive tools; Components used in portable percussive tools
- B25D2250/385—Use of thrust-washers, e.g. for limiting the course of the impulse member
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Percussive Tools And Related Accessories (AREA)
Abstract
The application provides a kind of electric tool, which includes: clamping device, is used to clamp or discharge drill bit；Percussion mechanism comprising be driven and the impact portion of drill hammer and the power source being used to provide power；Wherein, the impact portion has carrying position and unloading position, and can move back and forth between carrying position and the unloading position；At the carrying position, the impact portion couples with the power source and being capable of drill hammer；At the unloading position, the impact portion is coupled with power source releasing；And resetting-mechanism, it is used to provide the reset force that the impact portion is maintained to unloading position；When the power that drill bit is transferred to the impact portion is less than the reset force that the resetting-mechanism provides, the impact portion is maintained at unloading position.According to the technical solution of the application, impact portion can be maintained at unloading position when drill bit does not compress workpiece, effectively avoid various maloperations.
Description
Technical field
This application involves electric tool more particularly to a kind of electric tools with resetting-mechanism.
Background technique
In the prior art, electric hammer and electric drill are very mature electric tool.Wherein, electric hammer is for impacting and boring
Hole, and electric drill is then mainly used for drilling.To realize different functions, these electric tools would generally apply different drill bits, example
Such as: grooved shank drill, circle handle drill bit or turret drill.Wherein there is the drill bit that a part has relative small size, for this
For a little drill bits, if most probably causing to bore because of maloperation in assembling process or its in standby is not clamped completely
Head is impacted and is emitted, and safety accident is thus induced.
Summary of the invention
The application technical problem underlying to be solved is to provide the Implement clamping systems for improving maloperation situation.
In order to solve the above technical problems, one side the application provides a kind of electric tool comprising: clamping device is used
In clamping or release drill bit；Percussion mechanism comprising be driven and the impact portion of drill hammer and the power being used to provide power
Source；Wherein, the impact portion has carrying position and unloading position, and can be past between carrying position and the unloading position
Multiple movement；At the carrying position, the impact portion couples with the power source and being capable of drill hammer；In the unloading position
Place is set, the impact portion is coupled with power source releasing；And resetting-mechanism, offer is provided and is maintained at the impact portion
The reset force of unloading position；When the power that drill bit is transferred to the impact portion is less than the reset force that the resetting-mechanism provides, institute
It states impact portion and is maintained at unloading position.
According to the technical solution of the application, impact portion is maintained to provide by answering for unloading position by setting resetting-mechanism
Position power；The reset force that resetting-mechanism provides can be less than when drill bit does not compress workpiece or in the power that drill bit is transferred to impact portion
When, impact portion is maintained at unloading position, effectively avoids various maloperations.
Detailed description of the invention
In conjunction with attached drawing refering to the detailed description of following specific embodiments, the application will be more fully appreciated, in attached drawing
Same appended drawing reference refers to same element in view.Wherein:
Fig. 1 shows a kind of schematic diagram of the electric tool along axial section view of specific embodiment.
Specific embodiment
Please refer to shown in Fig. 1, according to a kind of electric tool of specific embodiment of the application include: for clamp or
Discharge the clamping device 100 of drill bit 400；It the impact portion 210 of drill hammer 400 and is used to provide power dynamic with being driven
The percussion mechanism 200 in power source；And for providing the resetting-mechanism that impact portion 210 is maintained to the reset force of unloading position b
300.Wherein, impact portion 210 has carrying position a and unloading position b, and can be past between carrying position a and unloading position b
Multiple movement；When impact portion 210 moves at carrying position a, impact portion 210 couples with power source and being capable of drill hammer 400；
When impact portion 210 moves at unloading position b, impact portion 210 is coupled with power source releasing；And by resetting-mechanism 300 come
The reset force that impact portion is maintained to unloading position is provided, punching can be transferred to when drill bit does not compress workpiece or in drill bit 400
When hitting the power in portion 210 less than the reset force that resetting-mechanism 300 provides, impact portion 210 is maintained at unloading position b, thus effectively
Avoid various maloperations.
Hereafter the components such as clamping device 100, percussion mechanism 200 and resetting-mechanism 300 to the electric tool are retouched one by one
It states.
The clamping device can be relatively conventional clamping device in field of power tools, be also possible to some improved
Clamping device, as long as it can be cooperatively connected i.e. with the percussion mechanism and resetting-mechanism addressed in embodiments herein
Can,.A kind of part-structure feature of clamping device will be described herein in conjunction with Fig. 1, to more fully understand this conception.It is specific and
Speech, clamping device 100 include matrix 110.Wherein, in the matrix 110 setting along axially through mounting hole, the mounting hole one end
The assembly or disassembly mouth of all kinds of drill bits is extended to, to be packed into or take out all kinds of drill bits, and before this end is defined as in this programme
End.The other end, which then extends to, connects percussion mechanism described hereinafter, in order to which it drives the drill bit of loading, executes operation
Task, and this end is defined as rear end in this programme.
First kind through-hole and the second class through-hole are also disposed on direction in Fig. 1 from left to right, in matrix 110.
Wherein, in this embodiment, three first kind through-holes tilt towards front end and run through the matrix 110, are used to plug clamping jaw 120
And it is achieved in clamping or release operation to circle handle drill bit.In addition, a second class through-hole tilts towards front end and runs through this
Matrix 110 is used to plug lock pin 130 and is achieved in the clamping or release operation to grooved shank drill.
In addition, also dustproof cover 140 can be added in its mounting hole front end, to avoid in the state of stopping using dust enter
In the mounting hole of tool.
Clamping device 100 above-mentioned is connected to percussion mechanism 200 by ball 500.
With continued reference to Fig. 1, which is configured to pipe 230, and impact portion 210 is arranged in pipe 230, and energy
It is enough to be moved back and forth when being driven along pipe 230, the driving in its end motion backwards by power source, and advance the puck
When hit the drill bit 400 that assembles, and then drive drill bit 400 to impact workpiece, realize process requirements.
The percussion mechanism 200 further includes driving section 220, and driving section 220 is arranged between impact portion 210 and power source,
It can be coupled with power source and power is transferred to impact portion 210；Wherein, when impact portion 210 is at carrying position a,
It is coupled via driving section 220 with power source, and being capable of drill hammer 400；And when impact portion 210 is at unloading position b, punching
It hits portion 210 to couple with the releasing of driving section 220, and then is no longer influenced by driving, therefore can remain stationary.
In addition, the percussion mechanism 200 further includes guide bushing 240, guide bushing 240 is arranged around impact portion 210, and draws
Accommodation groove 241 is arranged in the side close to driving section 220 in guide bush 240；Wherein, at unloading position b, driving section 220 is protected
It holds in accommodation groove 241, and is coupled with power source releasing；It is thus achieved that making it in off working state the fixing of driving section
It is lower to be not necessarily to continue on through by power source drive and execute percussion action.And at carrying position a, impact portion 210 pushes away driving section 220
Accommodation groove 241 out, driving section 220 couple with power source and being capable of drill hammers 400.
More specifically, axially disposed first accommodating cavity 242 in guide bushing 240, resetting-mechanism 300 are arranged first
In accommodating cavity 242；Wherein, at unloading position b, it is separate that impact portion 210 is pressed on the first accommodating cavity 242 by resetting-mechanism 300
First side of power source.A section is thus provided to limit impact portion 210, it is ensured that it can be in carrying position a and unloading
It is moved between the b of position.
Optionally, which may also include thrust ring 250, and thrust ring 250 is arranged around impact portion 210, and only
Throw-out collar 250 is used to provide buffering for impact portion 210 and absorbs the energy of impact portion 210, in order to avoid 230 rigidity of impact portion 210 and pipe
It collides and excessive wear.
At this point, along axial settable second accommodating cavity 251, the second accommodating cavity 251 and the first accommodating cavity in thrust ring 250
242 surround accommodating space c；Wherein, at unloading position b, it is separate that impact portion 210 is pressed on accommodating space c by resetting-mechanism 300
The first end of power source.A complete cavity space is consequently formed to limit impact portion 210, it is ensured that it can be in carrying position
It is moved between a and unloading position b.
In another unshowned embodiment, which does not have the first accommodating cavity, but it is deviating from driving section
Side be positioned against end face.At this point, the first end of resetting-mechanism is supported on end face, and the second end of resetting-mechanism to
Impact portion applies reset force.Thus it equally may be implemented that impact portion is compressed to unloading position b without other external force.
And a variety of connection types can be used between resetting-mechanism 300 and impact portion then to realize the reliable delivery of power.For example,
The circumferentially arranged boss 211 of impact portion 210, resetting-mechanism 300 directly or indirectly apply against boss 211 to impact portion 210
Reset force.
In addition, the resetting-mechanism 300 includes elastic element 310 as a kind of concrete implementation form, passed in drill bit 400
When being handed to the power of impact portion 210 less than the elastic force that elastic element 310 provides, the holding of impact portion 210 is pressed on by elastic element 310
At unloading position b.
Certainly, under the teaching of several embodiments cited hereinabove, it is known that the specific setting position of the resetting-mechanism with
There are a variety of remodeling for structure type, as long as it, which can be realized, applies reset force to impact portion, to be not subjected to other in impact portion
It can be maintained at unloading position b when external force.
In addition, the example as concrete application, which can be electric hammer, impact drill or hand-held drill.
The above specific embodiment is merely to illustrate the application, and is not the limitation to the application.To illustrate relative position
Relationship, used herein left and right, upper inferior opposite directional terminology, not for the restriction of absolute position.Related technology
The those of ordinary skill in field can also make the technical solution of the application in the case where not departing from scope of the present application
Various change and modification, therefore all equivalent technical solutions also belong to the scope of the application, the scope of patent protection of the application
It should be defined by the claims.
Claims (10)
1. a kind of electric tool characterized by comprising
Clamping device (100) is used to clamp or discharge drill bit (400)；
Percussion mechanism (200) comprising be driven and the impact portion (210) of drill hammer (400) and be used to provide power dynamic
Power source；Wherein, the impact portion (210) has carrying position (a) and unloading position (b), and can be in the carrying position (a)
It is moved back and forth between unloading position (b)；At the carrying position (a), the impact portion (210) couples with the power source
And it being capable of drill hammer (400)；At the unloading position (b), the impact portion (210) couples with power source releasing；
And
Resetting-mechanism (300) is used to provide the reset force that the impact portion (210) is maintained to unloading position (b)；In drill bit
(400) when being transferred to the power of the impact portion (210) less than the reset force that the resetting-mechanism (300) provide, the impact portion
(210) it is maintained at unloading position (b).
2. electric tool according to claim 1, which is characterized in that further include driving section (220), the driving section
(220) it is arranged between the impact portion (210) and the power source, can be coupled with the power source and transmit power
To impact portion (210)；Wherein, at the carrying position (a), the impact portion (210) couples simultaneously with the driving section (220)
It being capable of drill hammer (400)；At the unloading position (b), the impact portion (210) and the driving section (220) release coupling
It closes.
3. electric tool according to claim 2, which is characterized in that further include guide bushing (240), the guide bushing
(240) it is arranged around the impact portion (210), and the guide bushing (240) is set in the side close to the driving section (220)
Set accommodation groove (241)；Wherein, at the unloading position (b), the driving section (220) is maintained at the accommodation groove (241)
It is interior, and coupled with power source releasing；At the carrying position (a), the impact portion (210) is by the driving section
(220) accommodation groove (241) is released, the driving section (220) couples with power source and being capable of drill hammer (400).
4. electric tool according to claim 3, which is characterized in that axially disposed in the guide bushing (240)
One accommodating cavity (242), resetting-mechanism (300) setting is in first accommodating cavity (242)；Wherein, in the unloading position
The place (b) is set, the impact portion (210) is pressed on first accommodating cavity (242) far from described dynamic by the resetting-mechanism (300)
First side in power source.
5. electric tool according to claim 4, which is characterized in that further include thrust ring (250), the thrust ring
(250) it is arranged around the impact portion (210), and the thrust ring (250) is used to provide buffering for the impact portion (210).
6. electric tool according to claim 5, which is characterized in that axially disposed second in the thrust ring (250)
Accommodating cavity (251), second accommodating cavity (251) and first accommodating cavity (242) surround accommodating space (c)；Wherein, in institute
Unloading position (b) place is stated, the impact portion (210) is pressed on the accommodating space (c) far from institute by the resetting-mechanism (300)
State the first end of power source.
7. electric tool according to claim 3, which is characterized in that the guide bushing (240) is deviating from the transmission
The side in portion (220) is positioned against end face, and the first end of the resetting-mechanism (300) is supported on described on end face and multiple
The second end of position mechanism (300) applies reset force to the impact portion (210).
8. according to claim 1 to electric tool described in 7 any one, which is characterized in that the resetting-mechanism (300) includes
Elastic element (310) is less than the elastic element (310) offer in the power that drill bit (400) is transferred to the impact portion (210)
When elastic force, the elastic element (310) keeps the impact portion (210) to be pressed on unloading position (b) place.
9. according to claim 1 to electric tool described in 7 any one, which is characterized in that the impact portion (210) is circumferentially
It is arranged boss (211), the resetting-mechanism (300) to apply to the impact portion (210) against the boss (211) to be resetted
Power.
10. according to claim 1 to electric tool described in 7 any one, which is characterized in that the electric tool includes: electricity
Hammer, impact drill or hand-held drill.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810371235.XA CN110394769B (en) | 2018-04-24 | 2018-04-24 | Electric tool |
| DE112019002136.2T DE112019002136T5 (en) | 2018-04-24 | 2019-04-18 | Power tool |
| PCT/CN2019/083292 WO2019206022A1 (en) | 2018-04-24 | 2019-04-18 | Electric tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810371235.XA CN110394769B (en) | 2018-04-24 | 2018-04-24 | Electric tool |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110394769A true CN110394769A (en) | 2019-11-01 |
| CN110394769B CN110394769B (en) | 2022-03-01 |
Family
ID=68293727
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810371235.XA Active CN110394769B (en) | 2018-04-24 | 2018-04-24 | Electric tool |
Country Status (3)
| Country | Link |
|---|---|
| CN (1) | CN110394769B (en) |
| DE (1) | DE112019002136T5 (en) |
| WO (1) | WO2019206022A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102023204119A1 (en) | 2022-05-30 | 2023-11-30 | Bosch Power Tools (China) Co., Ltd. | FIELD OF THE INVENTION |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1227987A (en) * | 1998-03-04 | 1999-09-08 | 星蒂拉公开股份有限公司 | Hand electric tool |
| CN1361726A (en) * | 1999-07-20 | 2002-07-31 | 罗伯特·博施有限公司 | Drilling hammer or impact hammer |
| CN101400485A (en) * | 2006-03-09 | 2009-04-01 | 罗伯特·博世有限公司 | Machine tool and method for the operation thereof |
| CN101563191A (en) * | 2006-12-20 | 2009-10-21 | 罗伯特·博世有限公司 | Striking mechanism for a handheld power tool |
| EP2283978A2 (en) * | 2009-08-13 | 2011-02-16 | Robert Bosch GmbH | Hand tool machine apparatus |
| CN102476375A (en) * | 2010-11-29 | 2012-05-30 | 罗伯特·博世有限公司 | Hammer mechanism |
| CN104647313A (en) * | 2013-10-17 | 2015-05-27 | 罗伯特·博世有限公司 | Portable tool |
| CN107848098A (en) * | 2015-07-17 | 2018-03-27 | 喜利得股份公司 | Hand held power machine |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3181298A1 (en) * | 2015-12-15 | 2017-06-21 | HILTI Aktiengesellschaft | Percussive machine tool |
-
2018
- 2018-04-24 CN CN201810371235.XA patent/CN110394769B/en active Active
-
2019
- 2019-04-18 DE DE112019002136.2T patent/DE112019002136T5/en active Pending
- 2019-04-18 WO PCT/CN2019/083292 patent/WO2019206022A1/en active Application Filing
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1227987A (en) * | 1998-03-04 | 1999-09-08 | 星蒂拉公开股份有限公司 | Hand electric tool |
| CN1361726A (en) * | 1999-07-20 | 2002-07-31 | 罗伯特·博施有限公司 | Drilling hammer or impact hammer |
| CN101400485A (en) * | 2006-03-09 | 2009-04-01 | 罗伯特·博世有限公司 | Machine tool and method for the operation thereof |
| CN101563191A (en) * | 2006-12-20 | 2009-10-21 | 罗伯特·博世有限公司 | Striking mechanism for a handheld power tool |
| EP2283978A2 (en) * | 2009-08-13 | 2011-02-16 | Robert Bosch GmbH | Hand tool machine apparatus |
| CN102476375A (en) * | 2010-11-29 | 2012-05-30 | 罗伯特·博世有限公司 | Hammer mechanism |
| CN104647313A (en) * | 2013-10-17 | 2015-05-27 | 罗伯特·博世有限公司 | Portable tool |
| CN107848098A (en) * | 2015-07-17 | 2018-03-27 | 喜利得股份公司 | Hand held power machine |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102023204119A1 (en) | 2022-05-30 | 2023-11-30 | Bosch Power Tools (China) Co., Ltd. | FIELD OF THE INVENTION |
Also Published As
| Publication number | Publication date |
|---|---|
| DE112019002136T5 (en) | 2021-06-10 |
| CN110394769B (en) | 2022-03-01 |
| WO2019206022A1 (en) | 2019-10-31 |
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