CN109227479A - A kind of hand-held brushless direct-current electric hammer - Google Patents
A kind of hand-held brushless direct-current electric hammer Download PDFInfo
- Publication number
- CN109227479A CN109227479A CN201811364107.9A CN201811364107A CN109227479A CN 109227479 A CN109227479 A CN 109227479A CN 201811364107 A CN201811364107 A CN 201811364107A CN 109227479 A CN109227479 A CN 109227479A
- Authority
- CN
- China
- Prior art keywords
- pivoted housing
- held
- gear wheel
- casing
- hand
- 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.)
- Pending
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
- B25D11/04—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
- B25D11/00—Portable percussive tools with electromotor or other motor drive
- B25D11/06—Means for driving the impulse member
Abstract
The present invention provides a kind of hand-held brushless direct-current electric hammer, sequentially connected split type brushless motor, driving plate and dc switch are equipped in casing, battery pack is detachably connected with casing, and battery pack is connected with driving plate；Mechanical head is set to casing front end；Mechanical head includes shell, and pivoted housing is set in shell, and second level gear wheel is tight at pivoted housing periphery and engages with countershaft-gear；Jump bit, percussion hammer, piston are sequentially coaxially set in pivoted housing from front to back；Percussion hammer is snug fit in piston, and jump bit is snug fit in pivoted housing, and work drill bit is same to be located in jump bit front end and connect with pivoted housing close-fitting；Piston is connected with beat bearing；Beat bearing and level-one gear wheel are set on jackshaft；Jackshaft is connect with split type brushless motor.The present invention improves work efficiency, and alleviates weight, improves Energy Efficiency Ratio；The limitation for getting rid of AC power source improves the convenience used；In the case that revolving speed is constant, frequency of impact is improved, ensure that drilling efficiency.
Description
Technical field
The present invention relates to a kind of electric hammer more particularly to a kind of hand-held brushless direct-current electric hammers, belong to electric tool technology neck
Domain.
Background technique
Electric hammer is a kind of electrodynamic type rotation hammer drill with overload-release clutch with Pneumatic hammering mechanism.Electric hammer is to utilize work
The principle of movement is filled in, compressed gas drill hammer, not needing hand makes great strength, can be in hardness such as concrete, brick, stones
The hole of 6-100mm is opened on material, electric hammer aperture efficiency on above-mentioned material is higher, but it cannot the aperture on metal.
Common electric hammer on the market mostly uses 220V AC power source, while using series excited machine and heavy load machinery head.
Its working efficiency is low, and there are sparks for commutator, and weight weight, the requirement to use environment and operator is all quite high, so that operation
Tool is highly inconvenient.
Summary of the invention
The technical problem to be solved by the present invention is the convenience for how improving the working efficiency of electric hammer and using, mitigates it
Weight.
In order to solve the above-mentioned technical problem, the technical solution of the present invention is to provide a kind of hand-held brushless direct-current electric hammer,
It is characterized in that: including casing, split type brushless motor, driving plate and dc switch is equipped in casing, split type brushless motor is logical
It crosses conducting wire to be connected with driving plate, driving plate is connected by conducting wire with dc switch；Battery pack is detachably connected with casing, and electricity
Chi Bao is connected by conducting wire with driving plate；
Mechanical head is set to casing front end；The machinery head includes shell, and pivoted housing and second level gear wheel are set in shell, and two
Grade gear wheel close-fitting is connected to pivoted housing periphery, and jackshaft is set to below second level gear wheel, and second level gear wheel and countershaft-gear
Engagement；Jump bit, percussion hammer, piston are sequentially coaxially set in pivoted housing from front to back；Percussion hammer is snug fit in piston, is formed closed
Gas chamber；Jump bit is snug fit in pivoted housing, and work drill bit is same to be located in jump bit front end, and work drill bit and pivoted housing close-fitting company
It connects；Piston is connected with the beat bar of beat bearing；Beat bearing and the equal close-fitting of level-one gear wheel are installed on jackshaft；Jackshaft
It is connect with split type brushless motor.
Preferably, the gear ratio of the jackshaft and second level gear wheel is greater than 6.
Preferably, the split type brushless motor includes rotor and stator, and the rotor includes armature spindle, rotor core and
The equal close-fitting of fan blade is installed on armature spindle, and armature spindle is engaged with the level-one canine tooth wheel gear.
It is highly preferred that fan blade is rotated with armature spindle when the split type brushless motor works, it is brushless motor and driver
Cooling air duct is provided.
It is highly preferred that the rotor core is equipped with rare earth magnetic steel.
It is highly preferred that the stator is fixedly connected with casing, the rotor is connect by bearing with casing.
It is highly preferred that the stator includes stator core, Hall control panel is connected with stator core.
It is highly preferred that being equipped with lithium battery in the battery pack, lithium battery is connected by nickel sheet conducting wire with the driving plate.
It is highly preferred that the battery pack is connect by buckle easy to disassemble with casing.
It is highly preferred that the driving plate is equipped with LED light, it is transparent configuration at the corresponding casing of LED light；When work, LED
Lamp is always on, and provides illumination.
It is highly preferred that control brushless motor starts in use, starting dc switch, the power supply of battery pack import driver
Running；The armature spindle of brushless motor rotates, and drives the rotation of level-one gear wheel, then drive jackshaft to rotate together, then drive swing rod
Bearing rotates together, and then the percussion hammer with piston and its inside moves along a straight line in pivoted housing, and percussion hammer hammers jump bit, punching
Hammer impacts work drill bit；
Meanwhile jackshaft drives the rotation of second level gear wheel, then pivoted housing is driven to rotate, and then drives work bit；Work
Make drill bit while rotating and impacting, reaches drilling effect.
When split type brushless motor works, fan blade is rotated with armature spindle, provides cooling air duct for brushless motor and driver.
Device provided by the invention overcomes the deficiencies in the prior art, using brushless motor, improves work efficiency, and mitigates
Weight, improves Energy Efficiency Ratio；Use high-performance dynamic lithium battery as power supply, gets rid of the limitation of AC power source, improve
The convenience used；Using higher impact structure hammer drill ratio, in the case that revolving speed is constant, frequency of impact is improved, ensure that
Drilling efficiency；Device volume is small, light-weight, and drilling ability is strong, is suitable for a wide range of promote the use of.
Detailed description of the invention
Fig. 1 is hand-held brushless direct-current electric hammer structural schematic diagram provided in this embodiment.
Specific embodiment
Present invention will be further explained below with reference to specific examples.
Fig. 1 is hand-held brushless direct-current electric hammer structural schematic diagram provided in this embodiment, the hand-held brushless direct-current
Electric hammer includes mechanical head 1, battery pack 4 and casing 6.Mechanical head 1 and casing 6 are connected by screw to, battery pack 4 be it is replaceable, with
Casing 6 is connected by buckle 4-2 easy to disassemble.
There is pivoted housing 1-1, jump bit 1-2, second level gear wheel 1-3, percussion hammer 1-4, piston 1-5, beat in the machinery head 1
Bearing 1-6, jackshaft 1-7 and level-one gear wheel 1-8.
Pivoted housing 1-1 is connect with second level gear wheel 1-3 close-fitting, and second level gear wheel 1-3 is located at the periphery pivoted housing 1-1.Jackshaft 1-7
Below second level gear wheel 1-3, and second level gear wheel 1-3 is engaged with jackshaft 1-7 gear.In the present embodiment, jackshaft 1-7
It is greater than 6 with the gear ratio of second level gear wheel 1-3.
Work drill bit, jump bit 1-2, percussion hammer 1-4, piston 1-5, beat bearing 1-6 are sequentially arranged in pivoted housing 1-1 from front to back
It is interior.Percussion hammer 1-4 is snug fit in piston 1-5, forms sealed gas chamber.Jump bit 1-2 is snug fit in pivoted housing 1-1, impact
Hammer 1-2 is same to be located on front side of percussion hammer 1-4.The drill bit that works is set to the front end jump bit 1-2, connect with pivoted housing 1-1 close-fitting.Piston 1-5
It is connected with the beat bar of beat bearing 1-6.Beat bearing 1-6 and the equal close-fitting of level-one gear wheel 1-8 are mounted on jackshaft 1-7,
Beat bearing 1-6 is located on front side of level-one gear wheel 1-8.
There is split type brushless motor 2, driving plate 3 and dc switch 5 in the casing 6, split type brushless motor 2 passes through
Conducting wire is connected with driving plate 3, and driving plate 3 is connected by conducting wire with dc switch 5.
There is the split type brushless motor 2 rotor 2-1 and stator 2-2, stator 2-2 to be fixedly connected with casing 6, rotor 2-
1 is connect by bearing with casing 6.
The rotor 2-1 has armature spindle 2-1-1, fan blade 2-1-2, rare earth magnetic steel 2-1-3, rotor core 2-1-4.It is described
Rare earth magnetic steel 2-1-3 possesses four altogether, is distributed on rotor core 2-1-4.The rotor core 2-1-4 and fan blade 2-1-2
On armature spindle 2-1-1, and close-fitting connects, and fan blade 2-1-2 is located on front side of rotor core 2-1-4.Armature spindle 2-1-1 and one
Grade gear wheel 1-8 gear engagement.
The stator 2-2 has stator core 2-2-1 and Hall control panel 2-2-2, the Hall control panel 2-2-2 and determines
Sub- iron core 2-2-1 is connected by screw to.
The battery pack 4 has three sections, 18650 lithium battery 4-1 and buckle 4-2.The nominal total voltage of lithium battery 4-1 is
10.8V is connected by nickel sheet conducting wire with driving plate 3.
The driving plate 3 has LED light 3-1, is transparent configuration at the corresponding casing 6 of LED light 3-1, and when operational instrument can
For illumination.
Hand-held brushless direct-current electric hammer provided in this embodiment is in use, be inserted into tool, starting dc switch for battery pack 4
5, power supply imports driver 3, and control brushless motor 2 starts operation.The armature spindle 2-1-1 of brushless motor 2 rotates, and drives level-one big
Gear 1-8 rotation；Due to level-one gear wheel 1-8 and jackshaft 1-7 close-fitting, jackshaft 1-7 rotates together；Due to jackshaft 1-7
With Oscillating lever bearing 1-6 close-fitting, Oscillating lever bearing 1-6 rotates together, and the percussion hammer 1-4 with piston 1-5 and its inside is in pivoted housing 1-1
Linear motion, percussion hammer 1-4 hammer jump bit 1-2, and jump bit 1-2 impacts work drill bit.Simultaneously as jackshaft
1-7 is engaged with second level gear wheel 1-3, drives second level gear wheel 1-3 rotation；Due to second level gear wheel 1-3 and pivoted housing 1-1 close-fitting,
Drive pivoted housing 1-1 rotation；Pivoted housing 1-1 drives work bit.Work drill bit is rotated and is impacted simultaneously, reaches drilling effect.
Meanwhile the rotor 2-1 of the brushless motor 2 has fan blade 2-1-2, when work, fan blade 2-1-2 rotation is brushless
Motor 2 and driver 3 provide cooling air duct.
The driving plate 3 has LED light 3-1, and when work, LED light 3-1 is always on, and provides illumination.
Although it should be understood that herein may usage amount term " first ", " second " etc. each unit is described,
But these units should not be limited by these terms.The use of these items is only for by a unit and another unit
It distinguishes.For example, without departing substantially from the range of exemplary embodiment, it is single that first unit can be referred to as second
Member, and similarly second unit can be referred to as first unit.
It mentions in the present specification or up, down, left, right, before and after, front, the back side, top, the bottom that may mention etc.
Positional terms are defined relative to each construction shown in the drawings, they are opposite concepts, and it is therefore possible to can root
Correspondingly changed according to different location locating for it, different use states.So also should not be by these or others side
Position term is construed to restricted term.
The above, only presently preferred embodiments of the present invention, not to the present invention in any form with substantial limitation,
It should be pointed out that under the premise of not departing from the method for the present invention, can also be made for those skilled in the art
Several improvement and supplement, these are improved and supplement also should be regarded as protection scope of the present invention.All those skilled in the art,
Without departing from the spirit and scope of the present invention, when made using disclosed above technology contents it is a little more
Dynamic, modification and the equivalent variations developed, are equivalent embodiment of the invention；Meanwhile all substantial technologicals pair according to the present invention
The variation, modification and evolution of any equivalent variations made by above-described embodiment, still fall within the range of technical solution of the present invention
It is interior.
Claims (10)
1. a kind of hand-held brushless direct-current electric hammer, it is characterised in that: including casing (6), split type brushless electricity is equipped in casing (6)
Machine (2), driving plate (3) and dc switch (5), split type brushless motor (2) are connected by conducting wire with driving plate (3), driving plate
(3) it is connected by conducting wire with dc switch (5)；Battery pack (4) and casing (6) are detachably connected, and battery pack (4) is by leading
Line is connected with driving plate (3)；
Mechanical head (1) is set to casing (6) front end；The machinery head (1) includes shell, pivoted housing (1-1) and second level gear wheel (1-3)
It is set in shell, second level gear wheel (1-3) close-fitting is connected to the periphery pivoted housing (1-1), and jackshaft (1-7) is set to second level gear wheel
Below (1-3), and second level gear wheel (1-3) is engaged with jackshaft (1-7) gear；Jump bit (1-2), percussion hammer (1-4), piston
(1-5) is sequentially coaxially set in pivoted housing (1-1) from front to back；Percussion hammer (1-4) is snug fit in piston (1-5), is formed closed
Gas chamber；Jump bit (1-2) is snug fit in pivoted housing (1-1), and work drill bit is same to be located in the front end jump bit (1-2), and works
Drill bit is connect with pivoted housing (1-1) close-fitting；Piston (1-5) is connected with the beat bar of beat bearing (1-6)；Beat bearing (1-6) and
Level-one gear wheel (1-8) close-fitting is installed on jackshaft (1-7)；Jackshaft (1-7) is connect with split type brushless motor (2).
2. a kind of hand-held brushless direct-current electric hammer as described in claim 1, it is characterised in that: the jackshaft (1-7) and two
The gear ratio of grade gear wheel (1-3) is greater than 6.
3. a kind of hand-held brushless direct-current electric hammer as described in claim 1, it is characterised in that: the split type brushless motor
(2) include rotor (2-1) and stator (2-2), the rotor (2-1) includes armature spindle (2-1-1), rotor core (2-1-4) and
Fan blade (2-1-2) close-fitting is installed on armature spindle (2-1-1), armature spindle (2-1-1) and level-one gear wheel (1-8) gear
Engagement.
4. a kind of hand-held brushless direct-current electric hammer as claimed in claim 3, it is characterised in that: the rotor core (2-1-4)
It is equipped with rare earth magnetic steel (2-1-3).
5. a kind of hand-held brushless direct-current electric hammer as claimed in claim 3, it is characterised in that: the stator (2-2) and casing
(6) it is fixedly connected, the rotor (2-1) is connect by bearing with casing (6).
6. a kind of hand-held brushless direct-current electric hammer as claimed in claim 3, it is characterised in that: the stator (2-2) includes fixed
Sub- iron core (2-2-1), Hall control panel (2-2-2) and stator core (2-2-1) connection.
7. a kind of hand-held brushless direct-current electric hammer as described in claim 1, it is characterised in that: be equipped in the battery pack (4)
Lithium battery (4-1), lithium battery (4-1) are connected by nickel sheet conducting wire with the driving plate (3).
8. a kind of hand-held brushless direct-current electric hammer as claimed in claim 1 or 7, it is characterised in that: the battery pack (4) passes through
Buckle (4-2) easy to disassemble is connect with casing (6).
9. a kind of hand-held brushless direct-current electric hammer as described in claim 1, it is characterised in that: the driving plate (3) is equipped with
LED light (3-1) is transparent configuration at the corresponding casing (6) of LED light (3-1)；When work, LED light (3-1) is always on, and provides photograph
It is bright.
10. a kind of hand-held brushless direct-current electric hammer as claimed in claim 3, it is characterised in that: in use, starting dc switch
(5), the power supply of battery pack (4) imports driver (3), and control brushless motor (2) starts operation；The armature spindle of brushless motor (2)
(2-1-1) rotation drives level-one gear wheel (1-8) rotation, then drives jackshaft (1-7) to rotate together, then drive Oscillating lever bearing
(1-6) rotates together, and then the percussion hammer (1-4) with piston (1-5) and its inside linear motion, percussion hammer in pivoted housing (1-1)
(1-4) hammers jump bit (1-2), and jump bit (1-2) impacts work drill bit；
Meanwhile jackshaft (1-7) drives second level gear wheel (1-3) rotation, then pivoted housing (1-1) is driven to rotate, and then drives work
Bit；Work drill bit is rotated and is impacted simultaneously, reaches drilling effect.
When split type brushless motor (2) works, fan blade (2-1-2) is rotated with armature spindle (2-1-1), is brushless motor (2) and drive
Dynamic device (3) provide cooling air duct.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811364107.9A CN109227479A (en) | 2018-11-16 | 2018-11-16 | A kind of hand-held brushless direct-current electric hammer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811364107.9A CN109227479A (en) | 2018-11-16 | 2018-11-16 | A kind of hand-held brushless direct-current electric hammer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109227479A true CN109227479A (en) | 2019-01-18 |
Family
ID=65074868
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811364107.9A Pending CN109227479A (en) | 2018-11-16 | 2018-11-16 | A kind of hand-held brushless direct-current electric hammer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109227479A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110561350A (en) * | 2019-08-28 | 2019-12-13 | 浙江信源电器制造有限公司 | Novel electric hammer |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090266570A1 (en) * | 2004-10-26 | 2009-10-29 | Matsushita Electric Works, Ltd. | Impact tool |
| CN104393733A (en) * | 2014-12-03 | 2015-03-04 | 上海电动工具研究所 | Integral high-speed permanent-magnet brushless direct-current motor for electric tool |
| US20170173768A1 (en) * | 2015-12-17 | 2017-06-22 | Milwaukee Electric Tool Corporation | System and method for configuring a power tool with an impact mechanism |
| CN107148326A (en) * | 2014-10-29 | 2017-09-08 | 日立工机株式会社 | Hit working rig |
| CN108462350A (en) * | 2017-02-20 | 2018-08-28 | 株式会社牧田 | Electric tool |
-
2018
- 2018-11-16 CN CN201811364107.9A patent/CN109227479A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090266570A1 (en) * | 2004-10-26 | 2009-10-29 | Matsushita Electric Works, Ltd. | Impact tool |
| CN107148326A (en) * | 2014-10-29 | 2017-09-08 | 日立工机株式会社 | Hit working rig |
| CN104393733A (en) * | 2014-12-03 | 2015-03-04 | 上海电动工具研究所 | Integral high-speed permanent-magnet brushless direct-current motor for electric tool |
| US20170173768A1 (en) * | 2015-12-17 | 2017-06-22 | Milwaukee Electric Tool Corporation | System and method for configuring a power tool with an impact mechanism |
| CN108462350A (en) * | 2017-02-20 | 2018-08-28 | 株式会社牧田 | Electric tool |
Non-Patent Citations (1)
| Title |
|---|
| 中国电子科技集团公司第二十一研究所: "《微特电机设计手册》", 30 July 1998 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110561350A (en) * | 2019-08-28 | 2019-12-13 | 浙江信源电器制造有限公司 | Novel electric hammer |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190118 |