CN103639473A - Handheld electric drill - Google Patents
Handheld electric drill Download PDFInfo
- Publication number
- CN103639473A CN103639473A CN201310635449.0A CN201310635449A CN103639473A CN 103639473 A CN103639473 A CN 103639473A CN 201310635449 A CN201310635449 A CN 201310635449A CN 103639473 A CN103639473 A CN 103639473A
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- China
- Prior art keywords
- oil
- end cap
- bearing end
- pipe
- inlet pipe
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B45/00—Hand-held or like portable drilling machines, e.g. drill guns; Equipment therefor
- B23B45/02—Hand-held or like portable drilling machines, e.g. drill guns; Equipment therefor driven by electric power
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B45/00—Hand-held or like portable drilling machines, e.g. drill guns; Equipment therefor
- B23B45/001—Housing of the drill, e.g. handgrip
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q11/00—Accessories fitted to machine tools for keeping tools or parts of the machine in good working condition or for cooling work; Safety devices specially combined with or arranged in, or specially adapted for use in connection with, machine tools
- B23Q11/12—Arrangements for cooling or lubricating parts of the machine
- B23Q11/121—Arrangements for cooling or lubricating parts of the machine with lubricating effect for reducing friction
- B23Q11/123—Arrangements for cooling or lubricating parts of the machine with lubricating effect for reducing friction for lubricating spindle bearings
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mounting Of Bearings Or Others (AREA)
- Motor Or Generator Cooling System (AREA)
Abstract
The invention discloses a handheld electric drill, and belongs to the technical field of electric tools. The handheld electric drill mainly comprises a shell body, a power shaft is mounted in the shell, the two ends of the shell body are provided with a front bearing end cap and a rear bearing end cap respectively, the space defined by the front bearing end cap, the rear bearing end cap and the shell forms a bearing chamber, and lubricating oil is filled in the bearing chamber. A handheld part is connected to one end, close to the rear bearing end cap, of the shell, the end portion of the handheld part is connected to an oil tank, the oil tank is communicated with the bearing chamber through an oil inlet pipe and an oil return pipe, a first power pump is arranged on the end portion, located inside the oil tank, of the oil inlet pipe, the handheld part is provided with a hollow power source mounting chamber, an electromotor is mounted in the power source mounting chamber, the electromotor is in transmission connection with a power shaft through a bevel gear pair, and the oil inlet pipe and the oil return pipe both penetrate through the power source mounting chamber. According to the handheld electric drill, lubricating oil lubrication is achieved, the service life of the handheld electric drill is prolonged, and the handheld electric drill is widely applied to the processing and manufacturing of electric tools.
Description
Technical field
The present invention relates to a kind of hand electric and bore, belong to electric tool technical field.
Background technology
Electric tool is small and exquisite with its volume, easy to carry and use and enjoy great popularity, the place of its use is also many, for example, electric drill, electronic mill, electric percussion drill, power saws etc., need plane, hole or groove etc. being not easy to machining on mobile object to be processed.
The lubricating system of electric tool is all to adopt grease lubrication at present, although electric tool small volume, but its rotating speed is but very high, the rotating speed that for example hand electric bores can reach per minute 1500 and turn, it is thinning very soon that so high rotating speed is heated lubricating grease, thereby cause bearing oil starvation to roll, affected the normal work of bearing, the service life of having reduced electric tool.
As everyone knows, the element of high speed rotating is used oil lubrication effect ideal conventionally, still, due to the restriction of electric tool narrow space and structure space, cannot realize oil lubrication always.
Therefore, for a kind of new hand electric of exploitation, bore, not only there is urgent researching value, also there are good economic benefit and commercial Application potentiality, this power that the present invention is accomplished just and basic place.
Summary of the invention
The defect of boring in order to overcome above-mentioned pointed existing hand electric, the inventor conducts in-depth research this, after having paid a large amount of creative works, thereby has completed the present invention.
Particularly, technical problem to be solved by this invention is: provide a kind of hand electric to bore, realized oil lubrication, improved the service life that hand electric bores.
For solving the problems of the technologies described above, technical scheme of the present invention is: provide a kind of hand electric to bore, described hand electric bores and comprises housing, in described housing, by fore bearing and the rear bearing being oppositely arranged, be rotatablely equipped with line shaft, the two ends of described housing are respectively equipped with fore bearing end cap and rear bearing end cap, described line shaft one end is stretched out described fore bearing end cap and drill bit is installed, the other end of described line shaft is rotated and is installed on described rear bearing end cap by thrust bearing, described fore bearing end cap, the space that rear bearing end cap and housing surround forms bearing chamber, in described bearing chamber, be filled with lubricating oil, described housing is connected with Handheld Division near one end of described rear bearing end cap, the end of described Handheld Division connects a fuel tank, described fuel tank is communicated with described bearing chamber by oil inlet pipe and oil return pipe, the end that described oil inlet pipe is positioned at described fuel tank is provided with the first kinetic pump, the oil-in of described bearing chamber is near described fore bearing end cap, and the oil return opening of described bearing chamber is near described rear bearing end cap, described Handheld Division is provided with the power source installation cavity of a hollow, in described power source installation cavity, is provided with a motor, and described motor is in transmission connection by bevel gear pair and described line shaft, and described oil inlet pipe and oil return pipe are all through described power source installation cavity.
In described hand electric of the present invention bores, as a kind of improvement, described housing is provided with cooling-water duct, described Handheld Division connects a cooling water cavity, between described cooling water cavity and fuel tank, be provided with dividing plate, between described cooling water cavity and cooling-water duct, be provided with water inlet pipe and return pipe, described water inlet pipe and return pipe are all through described power source installation cavity, and the end that described water inlet pipe is positioned at described cooling water cavity is provided with the second kinetic pump.
In described hand electric of the present invention bores, as further improvement, described cooling-water duct is circuitous channel, and described water inlet pipe connects the water inlet of described circuitous channel, and described return pipe connects the water return outlet of described circuitous channel.
In described hand electric of the present invention bores, as further improvement, described housing comprises shell body and the inner housing being set in together, on the surface of described inner housing, offer the guiding gutter of even number bar annular array, described water inlet and water return outlet are positioned on described rear bearing end cap and are arranged at the end of two adjacent guiding gutters, on described rear bearing end cap, be provided with successively the rear link slot that connects two adjacent guiding gutters, between the guiding gutter at described water inlet and described water return outlet place and adjacent guiding gutter, all do not establish rear link slot; On described fore bearing end cap, be provided with successively the front link slot that connects two adjacent guiding gutters, between the guiding gutter at described water inlet place and adjacent guiding gutter, be provided with a front link slot, between the guiding gutter at described water return outlet place and adjacent guiding gutter, be provided with another front link slot; The described circuitous channel of the common formation of described front link slot, guiding gutter and rear link slot.
In described hand electric of the present invention bores, as further improvement, described oil inlet pipe and oil return pipe are near being set together, between described oil inlet pipe and oil-in, be provided with oil inlet passage, described oil inlet passage is along the surface that extends axially and be arranged on described inner housing of described inner housing, between described oil return opening and oil return pipe, be provided with drainback passage, described drainback passage is along the surface that extends axially and be arranged on described inner housing of described inner housing, and described oil inlet passage is not communicated with on the surface of described inner housing with drainback passage.
In described hand electric of the present invention bores, as further improvement, between described oil inlet pipe and oil inlet passage, be provided with transparent oil inlet hose, between described oil return pipe and drainback passage, be provided with transparent oil return flexible pipe, described oil inlet hose and oil return flexible pipe are all arranged on the outside of described Handheld Division.
In described hand electric of the present invention bores, as another kind, improve, on described line shaft, be installed with an oil resistance dish, described oil resistance dish is between described oil-in and oil return opening and near described oil return opening position, described oil resistance dish is provided with some through holes that are obliquely installed.
In described hand electric of the present invention bores, as further improvement, described fore bearing end cap is provided with a Front oil seal, and described Front oil seal is near described fore bearing one side and be set on described line shaft, is provided with front baffle ring between described Front oil seal and fore bearing.
1. owing to having designed the bearing chamber of sealing, and bearing chamber is communicated with fuel tank, improved the version that hand electric bores, and realized the oil lubrication of bearing under pumping force effect, thereby greatly improved the service life that hand electric bores; Again due to the application of force direction of drill bit and the power transmission shaft direction of motor vertical, the structure that hand electric is bored is more reasonable, has not only reduced the production cost that hand electric bores, and has also further extended its service life.
2. owing to having designed cooling-water duct on housing, make the lubricating oil in bearing chamber be unlikely to excess Temperature, take away in time the heat of lubricating oil, thereby improved the lubricant effect of bearing; Due to housing, use again the sleeve structure of shell body and inner housing, on inner housing, offered guiding gutter simple, with low cost, changed the defect that traditional cast type passage is difficult to process residue, casting technique complexity; The design of circuitous channel has improved again the cooling effect of lubricating oil greatly.
3. the use of transparent oil inlet hose and oil return flexible pipe, has had intuitively the oil of lubricating oil and distinguishes, can remind in time when this oil change more of user, or this timely make-up oil while having a large amount of bubble in lubricating oil.
Accompanying drawing explanation
Fig. 1 is the structural representation of the embodiment of the present invention;
Fig. 2 is the schematic cross-section of A-A in Fig. 1;
Fig. 3 is the end face structure schematic diagram of fore bearing end cap in the embodiment of the present invention;
Fig. 4 is the end face structure schematic diagram of rear bearing end cap in the embodiment of the present invention.
Wherein, in Fig. 1-4, each number designation refers to respectively following concrete meaning, element and/or parts.
In figure: 1, shell body, 2, inner housing, 3, line shaft, 4, fore bearing, 5, rear bearing, 6, fore bearing end cap, 7, rear bearing end cap, 8, guiding gutter, 9, drill bit, 10, motor, 11, Handheld Division, 12, power source installation cavity, 13, oil inlet pipe, 14, oil return pipe, 15, the first kinetic pump, 16, oil-in, 17, oil return opening, 18, drainback passage, 19, oil inlet hose, 20, oil return flexible pipe, 21, container, 22, water inlet pipe, 23, return pipe, 24, the second kinetic pump, 25, water inlet, 26, water return outlet, 27, rear link slot, 28, front link slot, 29, oil resistance dish, 30, through hole, 31, Front oil seal, 32, front baffle ring, 33, thrust bearing, 34, drive bevel gear, 35, by dynamic bevel gear, 36, dividing plate, 37, fuel tank, 38, cooling water cavity, 39, oil inlet passage.
The specific embodiment
Below in conjunction with drawings and Examples, the present invention is further described.But the purposes of these exemplary embodiments and object are only used for exemplifying the present invention, not real protection scope of the present invention is formed to any type of any restriction, more non-protection scope of the present invention is confined to this.
As Fig. 1, Fig. 2, shown in common in Fig. 3 and Fig. 4, the invention provides a kind of hand electric bores, described hand electric bores and mainly comprises housing, in housing, by fore bearing 4 and the rear bearing 5 being oppositely arranged, be rotatablely equipped with line shaft 3, the two ends of housing are respectively equipped with fore bearing end cap 6 and rear bearing end cap 7, line shaft 3 one end are stretched out fore bearing end cap 6 and drill bit 9 are installed, the other end of line shaft 3 is rotated and is installed on rear bearing end cap 7 by thrust bearing 33, fore bearing end cap 6, the space that rear bearing end cap 7 and housing surround forms bearing chamber, in bearing chamber, be filled with lubricating oil, housing is connected with Handheld Division 11 near one end of rear bearing end cap 7, the end of Handheld Division 11 connects a fuel tank 37, fuel tank 37 is communicated with bearing chamber by oil inlet pipe 13 and oil return pipe 14, the end that oil inlet pipe 13 is positioned at fuel tank 37 is provided with the first kinetic pump 15, the oil-in 16 of bearing chamber is near fore bearing end cap 6, and the oil return opening 17 of bearing chamber is near rear bearing end cap 7, Handheld Division 11 is provided with the power source installation cavity 12 of a hollow, in power source installation cavity 12, be provided with a motor 10, motor 10 is arranged on the sidewall of power source installation cavity 12 conventionally, motor 10 is in transmission connection by bevel gear pair and line shaft 3, bevel gear pair comprise the drive bevel gear 34 being connected with motor 10 and be arranged on line shaft 3 by dynamic bevel gear 35, drive bevel gear 34 and being meshed by dynamic bevel gear 35, the application of force direction of drill bit 9 and the power transmission shaft of motor 10 axially perpendicular, while having avoided boring, impact motor 10, improved the service life of motor 10.Oil inlet pipe 13 and oil return pipe 14 are all through power source installation cavity 12, and oil inlet pipe 13 and oil return pipe 14 is built-in, and oil inlet pipe 13 and oil return pipe 14 are played a very good protection, and have saved again installing space simultaneously, have optimized usage space.
Housing is provided with cooling-water duct, Handheld Division 11 connects a cooling water cavity 38, between cooling water cavity 38 and fuel tank 37, be provided with dividing plate 36, during enforcement, fuel tank 37 and cooling water cavity 38 are arranged in a container 21 jointly, by dividing plate 36, container 21 is divided into fuel tank 37 and cooling water cavity 38, container 21 and dividing plate 36 are hot good conductor, to meet the fast cooling effect of lubricating oil.Between cooling water cavity 38 and cooling-water duct, be provided with water inlet pipe 22 and return pipe 23, water inlet pipe 22 and return pipe 23 are all through power source installation cavity 12, the end that water inlet pipe 22 is positioned at cooling water cavity 38 is provided with the second kinetic pump 24, cooling-water duct is circuitous channel, water inlet pipe 22 connects the water inlet 25 of circuitous channel, and return pipe 23 connects the water return outlet 26 of circuitous channel.The first kinetic pump 15 and the second kinetic pump 24 can be selected all very little liquor pumps of volume common on present market, power and flow, the small space boring to adapt to hand electric.
Housing comprises shell body 1 and the inner housing 2 being set in together, on the surface of inner housing 2, offer the guiding gutter 8 of even number bar annular array, water inlet 25 and water return outlet 26 are positioned on rear bearing end cap 7 and are arranged at the end of two adjacent guiding gutters 8, on rear bearing end cap 7, be provided with successively the rear link slot 27 that connects two adjacent guiding gutters 8, between the guiding gutter 8 at water inlet 25 and water return outlet 26 places and adjacent guiding gutter 8, all do not establish rear link slot 27; On fore bearing end cap 6, be provided with successively the front link slot 28 that connects two adjacent guiding gutters 8, between the guiding gutter 8 at water inlet 25 places and adjacent guiding gutter 8, be provided with a front link slot 28, between the guiding gutter 8 at water return outlet 26 places and adjacent guiding gutter 8, be provided with another front link slot 28; Fore bearing end cap 6 and rear bearing end cap 7 are fixedly clamped shell body 1 and inner housing 2, on the end face of fore bearing end cap 6 and rear bearing end cap 7, do not have slotted part just by the plug at end part of guiding gutter 8, the common circuitous channel that forms of front link slot 28, guiding gutter 8 and rear link slot 27, cooling water enters guiding gutter 8 from water inlet 25, through circuitous channel, in inner housing 2 peripheries, round, after fully carrying out heat exchange, by water return outlet 26, flowed out, then flow back to cooling water cavity 38.The design of even number bar guiding gutter 8 is in order to allow water inlet 25 and water return outlet 26 be positioned at identical one end, do not consider the words of compact conformation and appearance looks elegant, use odd number bar guiding gutter 8, make water inlet 25 and water return outlet 26 lay respectively at the two ends of housing, also can realize.
Between oil inlet pipe 13 and oil inlet passage 39, be provided with transparent oil inlet hose 19, between oil return pipe 14 and drainback passage 18, be provided with transparent oil return flexible pipe 20, oil inlet hose 19 and oil return flexible pipe 20 are all arranged on the outside of Handheld Division 11, in order to save space and to be convenient to, observe, conventionally oil inlet hose 19 and oil return flexible pipe 20 are close together, but owing to having certain distance between oil-in 16 and oil return opening 17, therefore on inner housing 2, offer an oil inlet passage 39 and a drainback passage 18, one end of oil inlet passage 39 connects oil-in 16, the other end connects oil inlet hose 19, one end of drainback passage 18 connects oil return opening 17, the other end connects oil return flexible pipe 20, during design, sleeve type structure due to shell body 1 and inner housing 2, oil inlet passage 39 and drainback passage 18 are opened on inner housing 2, moulding is very convenient, the end that oil inlet passage 39 and drainback passage 18 are positioned on shell body 1 can be near design, oil inlet pipe 13 and oil return pipe 14 are also near design simultaneously, make oil inlet hose 19 and oil return flexible pipe 20 close to each other.Certainly, during enforcement, can suitably be out of shape, for more attractive in appearance, oil return flexible pipe 20 also can be arranged on to power source installation cavity 12, externally only retain an oil inlet hose 19.
Inventor finds through research, it is not the cost performance optimum bringing when lubricating oil rapid flow, therefore, on line shaft 3, be installed with an oil resistance dish 29, oil resistance dish 29 is between oil-in 16 and oil return opening 17 and near oil return opening 17 positions, oil resistance dish 29 is provided with some through holes that are obliquely installed 30, oil resistance dish 29 with line shaft 3 rotation processes in, lubricating oil need to could be circulated to oil return opening 17 by oil-in 16 by through hole 30, due to being obliquely installed of through hole 30, make the circulation of lubricating oil and have some setbacks, the heat that lubricating oil is fully produced with bearing running, then under pump action, export cooling, to reach energy-conservation, efficient best cost performance.
Fore bearing end cap 6 is provided with a Front oil seal 31, Front oil seal 31 is near fore bearing 4 one sides and be set on line shaft 3, between Front oil seal 31 and fore bearing 4, be provided with front baffle ring 32, front baffle ring 32 is other plays positioning action to Front oil seal 31, guarantee the sealing of bearing chamber, further improved the service life of electric drill.
The purposes that should be appreciated that these embodiment only limits the scope of the invention for the present invention being described but not being intended to.In addition; also should understand; after having read technology contents of the present invention, those skilled in the art can make various changes, modification and/or modification to the present invention, within these all equivalent form of values fall within the protection domain that the application's appended claims limits equally.
Claims (8)
1. a hand electric bores, it comprises housing, in described housing, by fore bearing and the rear bearing being oppositely arranged, be rotatablely equipped with line shaft, it is characterized in that: the two ends of described housing are respectively equipped with fore bearing end cap and rear bearing end cap, described line shaft one end is stretched out described fore bearing end cap and drill bit is installed, the other end of described line shaft is rotated and is installed on described rear bearing end cap by thrust bearing, the space that described fore bearing end cap, rear bearing end cap and housing surround forms bearing chamber, in described bearing chamber, is filled with lubricating oil; Described housing is connected with Handheld Division near one end of described rear bearing end cap, the end of described Handheld Division connects a fuel tank, described fuel tank is communicated with described bearing chamber by oil inlet pipe and oil return pipe, the end that described oil inlet pipe is positioned at described fuel tank is provided with the first kinetic pump, the oil-in of described bearing chamber is near described fore bearing end cap, and the oil return opening of described bearing chamber is near described rear bearing end cap; Described Handheld Division is provided with the power source installation cavity of a hollow, in described power source installation cavity, is provided with a motor, and described motor is in transmission connection by bevel gear pair and described line shaft, and described oil inlet pipe and oil return pipe are all through described power source installation cavity.
2. hand electric as claimed in claim 1 bores, it is characterized in that: described housing is provided with cooling-water duct, described Handheld Division connects a cooling water cavity, between described cooling water cavity and fuel tank, be provided with dividing plate, between described cooling water cavity and cooling-water duct, be provided with water inlet pipe and return pipe, described water inlet pipe and return pipe are all through described power source installation cavity, and the end that described water inlet pipe is positioned at described cooling water cavity is provided with the second kinetic pump.
3. hand electric as claimed in claim 2 bores, and it is characterized in that: described cooling-water duct is circuitous channel, and described water inlet pipe connects the water inlet of described circuitous channel, and described return pipe connects the water return outlet of described circuitous channel.
4. hand electric as claimed in claim 3 bores, it is characterized in that: described housing comprises shell body and the inner housing being set in together, on the surface of described inner housing, offer the guiding gutter of even number bar annular array, described water inlet and water return outlet are positioned on described rear bearing end cap and are arranged at the end of two adjacent guiding gutters, on described rear bearing end cap, be provided with successively the rear link slot that connects two adjacent guiding gutters, between the guiding gutter at described water inlet and described water return outlet place and adjacent guiding gutter, all do not establish rear link slot; On described fore bearing end cap, be provided with successively the front link slot that connects two adjacent guiding gutters, between the guiding gutter at described water inlet place and adjacent guiding gutter, be provided with a front link slot, between the guiding gutter at described water return outlet place and adjacent guiding gutter, be provided with another front link slot; The described circuitous channel of the common formation of described front link slot, guiding gutter and rear link slot.
5. hand electric as claimed in claim 4 bores, it is characterized in that: described oil inlet pipe and oil return pipe are near being set together, between described oil inlet pipe and oil-in, be provided with oil inlet passage, described oil inlet passage is along the surface that extends axially and be arranged on described inner housing of described inner housing, between described oil return opening and oil return pipe, be provided with drainback passage, described drainback passage is along the surface that extends axially and be arranged on described inner housing of described inner housing, and described oil inlet passage is not communicated with on the surface of described inner housing with drainback passage.
6. hand electric as claimed in claim 5 bores, it is characterized in that: between described oil inlet pipe and oil inlet passage, be provided with transparent oil inlet hose, between described oil return pipe and drainback passage, be provided with transparent oil return flexible pipe, described oil inlet hose and oil return flexible pipe are all arranged on the outside of described Handheld Division.
7. the hand electric as described in as arbitrary in claim 1 to 6 as described in claim bores, it is characterized in that: on described line shaft, be installed with an oil resistance dish, described oil resistance dish is between described oil-in and oil return opening and near described oil return opening position, described oil resistance dish is provided with some through holes that are obliquely installed.
8. hand electric as claimed in claim 7 bores, and it is characterized in that: described fore bearing end cap is provided with a Front oil seal, and described Front oil seal is near described fore bearing one side and be set on described line shaft, is provided with front baffle ring between described Front oil seal and fore bearing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310635449.0A CN103639473B (en) | 2013-12-02 | 2013-12-02 | A kind of Handheld electric drill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310635449.0A CN103639473B (en) | 2013-12-02 | 2013-12-02 | A kind of Handheld electric drill |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103639473A true CN103639473A (en) | 2014-03-19 |
| CN103639473B CN103639473B (en) | 2015-10-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310635449.0A Active CN103639473B (en) | 2013-12-02 | 2013-12-02 | A kind of Handheld electric drill |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103639473B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108381473A (en) * | 2017-01-20 | 2018-08-10 | 苏州宝时得电动工具有限公司 | Power tool and fueller for power tool |
| CN109549681A (en) * | 2018-11-22 | 2019-04-02 | 南昌大学第二附属医院 | Drilling equipment |
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| WO2003053639A1 (en) * | 2001-12-21 | 2003-07-03 | Wacker Construction Equipment Ag | Drilling and/or striking hammer with a lubricating device |
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| CN203030966U (en) * | 2012-12-11 | 2013-07-03 | 南京久驰机电实业有限公司 | Hand-held electric drill |
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2013
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| WO2003053639A1 (en) * | 2001-12-21 | 2003-07-03 | Wacker Construction Equipment Ag | Drilling and/or striking hammer with a lubricating device |
| US20110192621A1 (en) * | 2008-07-11 | 2011-08-11 | Wacker Neuson Se | Hammer and/or Hammer Drill Having Relubricating Device |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108381473A (en) * | 2017-01-20 | 2018-08-10 | 苏州宝时得电动工具有限公司 | Power tool and fueller for power tool |
| CN108381473B (en) * | 2017-01-20 | 2022-01-18 | 苏州宝时得电动工具有限公司 | Power tool and oil supply device for power tool |
| CN109549681A (en) * | 2018-11-22 | 2019-04-02 | 南昌大学第二附属医院 | Drilling equipment |
| CN109549681B (en) * | 2018-11-22 | 2021-12-17 | 南昌大学第二附属医院 | Drilling device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103639473B (en) | 2015-10-07 |
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