CN203871989U - Percussion drill - Google Patents
Percussion drill Download PDFInfo
- Publication number
- CN203871989U CN203871989U CN201420290908.6U CN201420290908U CN203871989U CN 203871989 U CN203871989 U CN 203871989U CN 201420290908 U CN201420290908 U CN 201420290908U CN 203871989 U CN203871989 U CN 203871989U
- Authority
- CN
- China
- Prior art keywords
- percussion drill
- power density
- electric machine
- high power
- brushless electric
- 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.)
- Expired - Fee Related
Links
- 238000009527 percussion Methods 0.000 title claims abstract description 68
- 239000011449 brick Substances 0.000 claims description 16
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract description 10
- 229910052799 carbon Inorganic materials 0.000 abstract description 10
- 238000003912 environmental pollution Methods 0.000 abstract description 6
- 230000005540 biological transmission Effects 0.000 abstract description 5
- 238000009434 installation Methods 0.000 abstract description 4
- 230000003068 static effect Effects 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 239000000428 dust Substances 0.000 description 3
- 230000003116 impacting effect Effects 0.000 description 3
- 238000004891 communication Methods 0.000 description 2
- 238000005498 polishing Methods 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 238000001816 cooling Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Landscapes
- Drilling And Boring (AREA)
- Percussive Tools And Related Accessories (AREA)
Abstract
The utility model discloses a percussion drill comprising a machine shell which is internally provided with a supporting member and a high-power density brushless motor erected on the supporting member. The controller of the high-power density brushless motor is arranged in the machine shell. The high-power density brushless motor comprises a rotor shaft which is rotatably arranged on the supporting member. The clamping head of the percussion drill is fixed on one end of the rotor shaft. One end, which is far away from the clamping head, of the rotor shaft is provided with an impact moving gear. The machine shell is internally provided with an impact static gear which is arranged in a way of being corresponding to the impact moving gear. According to the percussion drill provided by the utility model, the device service life is enhanced, generation of powdered carbon is avoided and environmental pollution is avoided; and arrangement of a transmission device in the machine shell is avoided so that the service life is enhanced, energy loss is reduced, output efficiency is enhanced, noise and vibration are reduced, complexity of engaged installation of a transmission gear is avoided, volume and weight of the percussion drill are effectively reduced and assembling of the percussion drill is facilitated.
Description
Technical field
The utility model relates to electric drilling device technical field, particularly a kind of percussion drill.
Background technology
Percussion drill is a kind of electric tool, and polished fabric or other article complete polishing effect by the polishing disk of percussion drill.
Please refer to Fig. 1, the structural representation that Fig. 1 is a kind of percussion drill of the prior art.
Wherein, percussion drill by casing 01, output shaft 02, be arranged at chuck 06 on output shaft 02 and form with the motor (comprising rotor 03, stator 04, motor shaft 05 and carbon brush 07) of carbon brush.Output shaft 02 is provided with impact moving gear away from one end of chuck 06, is provided with and impacts quiet gear in casing 01.Motor is arranged in casing 01, motor shaft 05 is for gear shaft or gear is set in its end, and it is meshed by travelling gear, and then drives output shaft 02 to rotate, make to impact moving gear and rotate with respect to impacting quiet gear, and the impulsive force of generation is delivered to chuck 06.
But current percussion drill generally uses series excited machine, it needs gear drive to realize the change of transmission direction and rotating speed with the structure of carbon brush 07 between motor shaft 05 and output shaft 02.This makes the energy loss of percussion drill large, reduced the delivery efficiency of instrument, and the wearing and tearing of carbon brush 07 and travelling gear directly affects the useful life of percussion drill, and carbon brush 07 wearing and tearing generation carbon dust, and environment has been caused to certain pollution; Parts in percussion drill are more, and intermeshing travelling gear inevitably can produce larger noise and vibration in the process of passing on Gong, and are not easy to the assembling of percussion drill.
Therefore, how improving delivery efficiency and useful life, avoid environmental pollution, reduce noise and vibration, be convenient to the assembling of percussion drill, is the art personnel problem demanding prompt solutions.
Utility model content
In view of this, the utility model provides a kind of percussion drill, to improve delivery efficiency and useful life, avoids environmental pollution, reduces noise and vibration, is convenient to the assembling of percussion drill.
For achieving the above object, the utility model provides following technical scheme:
A percussion drill, comprises casing, is provided with strutting piece and is set up in the high power density brushless electric machine on described strutting piece in described casing, and the controller of described high power density brushless electric machine is arranged in described casing;
Described high power density brushless electric machine comprises that rotation is arranged at the armature spindle of described strutting piece, and the chuck of described percussion drill is fixed on one end of described armature spindle;
Described armature spindle is provided with impact moving gear away from one end of described chuck, is provided with the quiet gear of impact with the corresponding setting of described impact moving gear in described casing.
Preferably, in above-mentioned percussion drill, also comprise the fan being arranged on described armature spindle.
Preferably, in above-mentioned percussion drill, described fan is arranged at described rotor core near a side of described chuck; Or described fan is arranged at described rotor core away from a side of described chuck; Or the quantity of described fan is two, one is positioned at described rotor core near a side of described chuck, and another is positioned at described rotor core away from a side of described chuck.
Preferably, in above-mentioned percussion drill, described high power density brushless electric machine is internal rotor high power density brushless electric machine;
Described high power density brushless electric machine also comprises: be sheathed on the rotor core in described armature spindle outside, be arranged at the stator in described rotor core outside, be arranged at the permanent magnet between described stator and described rotor core.
Preferably, in above-mentioned percussion drill, described stator comprises stator core, is a plurality ofly wound in the stator enamelled wire group in described stator core and is arranged at the cold air duct in described stator core.
Preferably, in above-mentioned percussion drill, described cold air duct is comprised of the gap between adjacent two described stator enamelled wire groups and the gap between described stator core and described rotor core.
Preferably, in above-mentioned percussion drill, also comprise the power line for being connected with extraneous power frequency AC and be arranged at rectification and the filter in described casing;
Between described rotor core and described armature spindle, be provided with insulating sleeve.
Preferably, in above-mentioned percussion drill, described strutting piece is the support rod of arranging perpendicular to described armature spindle.
Preferably, in above-mentioned percussion drill, driving the power supplier of described high power density brushless electric machine operation is power brick.
Preferably, in above-mentioned percussion drill, described power brick is arranged in described casing; Or described power brick is arranged at outside described casing, on described casing, be provided with the interface being connected with described power brick.
From above-mentioned technical scheme, can find out, the percussion drill that the utility model provides, rotates by high power density brushless electric machine drives rotor shaft is set, and has effectively improved the useful life of device; And, due to high power density brushless electric machine being set, chuck is directly fixed on armature spindle, avoided arranging transmission device in casing, further improved useful life, and, avoid carbon dust to produce, and then avoided environmental pollution, and reduced energy loss, improved delivery efficiency.Because armature spindle is directly connected with chuck, effectively avoided the engagement between travelling gear, and then reduced noise and the vibration producing because of gear drive.When armature spindle rotates, be arranged at armature spindle away from the impact moving gear rotation of one end of chuck, coordinate and form impact with the quiet gear of impact in casing, realize the axial motion of armature spindle, and then the impulsive force of generation is delivered on chuck and is fulfiled assignment.By an axle, completed and impact to have transmitted, reduced gear drive and the noise and the vibration that produce.And the controller of high power density brushless electric machine is arranged in casing, effectively avoided controller external and cause because taking up an area space, make greatly unhandy situation, so that the use of percussion drill, high power density brushless electric machine is arranged in strutting piece, and controller is arranged in casing, by after high power density brushless electric machine and controller communication connection, control start and stop and the rotating speed of high power density brushless electric machine, avoided the loaded down with trivial details of travelling gear engagement installation, the volume and the weight that have effectively reduced percussion drill, facilitated the assembling of percussion drill effectively.
Accompanying drawing explanation
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, accompanying drawing in the following describes is only embodiment more of the present utility model, for those of ordinary skills, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is a kind of structural representation of percussion drill of the prior art;
Wherein,
Casing-01, output shaft-02, rotor-03, stator-04, motor shaft-05, chuck-06, carbon brush-07;
The structural representation of the percussion drill that Fig. 2 provides for the utility model embodiment;
The structural representation of the high power density brushless electric machine that Fig. 3 provides for the utility model embodiment.
Wherein,
Strutting piece-1, armature spindle-2, rotor core-3, stator-4, stator core-41, stator enamelled wire group-42, cold air duct-43, controller-5, chuck-6, casing-7, permanent magnet-8, fan-9, impact moving gear-10, impact quiet gear-11, insulating sleeve-12.
Embodiment
The utility model discloses a kind of percussion drill, to improve delivery efficiency and useful life, avoid environmental pollution, reduce noise and vibration, be convenient to the assembling of percussion drill.
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is clearly and completely described, obviously, described embodiment is only the utility model part embodiment, rather than whole embodiment.Embodiment based in the utility model, those of ordinary skills are not making the every other embodiment obtaining under creative work prerequisite, all belong to the scope of the utility model protection.
Please refer to Fig. 2, the structural representation of the percussion drill that Fig. 2 provides for the utility model embodiment.
The utility model embodiment provides a kind of percussion drill, comprises casing 7, is provided with strutting piece 1 and is set up in the high power density brushless electric machine on strutting piece 1 in casing 7, and the controller 5 of high power density brushless electric machine is arranged in casing 7; High power density brushless electric machine comprises and rotates the armature spindle 2 be arranged at strutting piece 1, and the driving shaft of armature spindle 2 and the chuck 6 of percussion drill is coaxial arranges and be integral type structure; Armature spindle 2 is provided with impact moving gear 10 away from one end of chuck 6, is provided with and the quiet gear 11 of the impact of impacting the corresponding setting of moving gear 10 in casing 7.
The percussion drill that the utility model embodiment provides, rotates by high power density brushless electric machine drives rotor shaft 2 is set, and has effectively improved the useful life of device; And, due to high power density brushless electric machine being set, chuck 6 is directly fixed on armature spindle 2, avoided at the interior transmission device that arranges of casing 7, further improved useful life, and, avoid carbon dust to produce, and then avoided environmental pollution, and reduced energy loss, improved delivery efficiency.Because armature spindle 2 is directly connected with chuck 6, effectively avoided the engagement between travelling gear, and then reduced noise and the vibration producing because of gear drive.When armature spindle 2 rotates, be arranged at armature spindle 2 away from impact moving gear 10 rotations of one end of chuck 6, coordinate and form impact with the quiet gear 11 of impact in casing 7, realizing the axial motion of armature spindle 2, and then the impulsive force of generation is delivered on chuck 6 and is fulfiled assignment.By an axle, completed and impact to have transmitted, reduced gear drive and the noise and the vibration that produce.And the controller of high power density brushless electric machine 5 is arranged in casing 7, effectively avoided controller 5 external and cause because taking up an area space, make greatly unhandy situation, so that the use of percussion drill, high power density brushless electric machine is arranged in strutting piece 1, and controller 5 is arranged in casing 7, by after high power density brushless electric machine and controller 5 communication connections, control start and stop and the rotating speed of high power density brushless electric machine, avoided the loaded down with trivial details of travelling gear engagement installation, volume and the weight of percussion drill have effectively been reduced, effectively facilitated the assembling of percussion drill.
On casing 7, be provided with armature spindle axial adjustment part, this armature spindle axial adjustment part can be knob meeting pushing block, armature spindle axial adjustment part is connected through the end of impacting quiet gear 11 with armature spindle 2, by regulating armature spindle axial adjustment part, complete the axial adjustment of armature spindle 2, and then reach the effect of switching shock function.
High power density brushless electric machine in the percussion drill providing for fear of the utility model embodiment is overheated and affect useful life, also comprises the fan 9 being arranged on armature spindle 2.In the process of high power density brushless electric machine operation, armature spindle 2 drives fan 9 to rotate when rotating, thereby to the operation of dispelling the heat of high power density brushless electric machine.
In the present embodiment, fan 9 is arranged at rotor core 3 near a side of chuck 6; Or fan 9 is arranged at rotor core 3 away from a side of chuck 6; Or the quantity of fan 9 is two, one is positioned at rotor core 3 near a side of chuck 6, and another is positioned at rotor core 3 away from a side of chuck 6.In this no longer detailed introduction and all within protection range.
For the ease of Air Flow, air inlet and air outlet can be set on casing 1, so that outside air enters casing 1 by air inlet and discharged by the air outlet of casing 1 under the effect of fan 9 after too high power density brushless electric machine.
Further, heat radiation in order to ensure controller 5, can regulate the position of air inlet and air outlet, make outside air process controller 5 and high power density brushless electric machine under the effect of fan 9, so that controller 5 is dispelled the heat in to the heat radiation of high power density brushless electric machine.
As shown in Figure 2, due to the axis of armature spindle 2 operating surface perpendicular to chuck 6, preferably armature spindle 2 and the driving shaft of chuck 6 are coaxially arranged.In order to improve armature spindle 2 with the connective stability of the driving shaft of chuck 6 and conveniently to install, armature spindle 2 is integral type structure with the driving shaft of chuck 6.Also armature spindle 2 can be connected by jockeys such as shaft couplings with the driving shaft of chuck 6, at this, introduce no longer in detail.
In the present embodiment, high power density brushless electric machine is internal rotor high power density brushless electric machine; High power density brushless electric machine also comprises: be sheathed on the rotor core 3 in armature spindle 2 outsides, be arranged at the stator 4 in rotor core 3 outsides, be arranged at the permanent magnet 8 between stator 4 and rotor core 3.Also can be applied to outer rotor brushless DC motor as high power density brushless electric machine in percussion drill that the utility model embodiment provides.
Wherein, the permanent magnet material of preferred high magnetic is as permanent magnet 8, to improve the power of high power density brushless electric machine.
Because temperature and current density are inversely proportional to, the efficiently radiates heat of stator 4 is determining the power density of motor.As shown in Figure 3, stator 4 comprises stator core 41, is a plurality ofly wound in the stator enamelled wire group 42 in stator core 41 and is arranged at the cold air duct 43 in stator core 41.By cold air duct 43 is set, so that Air Flow, effectively reduce the temperature of stator enamelled wire group 42.Due to, and then improve current density, and guarantee the high power density of the high power density brushless electric machine in the present embodiment, that is, the power that the motor of unit volume produces is higher.
Cold air duct 43 is comprised of the gap between adjacent two stator enamelled wire groups 42 and the gap between stator core 41 and rotor core 3.Stator enamelled wire is wound around on stator core 41, forms stator enamelled wire group 42.In winding process, between adjacent two stator enamelled wire groups 42, there is gap, for Air Flow, and, gap between adjacent two stator enamelled wire groups 42 is communicated with the gap between rotor core 3 with stator core 41, has further strengthened Air Flow, has improved cooling effect.
As tables of data below shows, the diameter of stator 4 of take is 55mm-65mm, and the high power density brushless electric machine that stator height is 20mm is example:
In table 1 prior art with comparing data of the present utility model
Hence one can see that, the size of the high power density brushless electric machine that the utility model embodiment provides (stator diameter and height) is all less than the size of high power density brushless electric machine of the prior art, but, power is greater than the power of high power density brushless electric machine of the prior art, therefore, the power that the motor of its unit volume produces is higher, to guarantee the high power density of the high power density brushless electric machine that the utility model embodiment provides.
The percussion drill that the utility model embodiment provides can be by DC low voltage power supply or industrial frequency AC electric drive.By being set, power line is connected with extraneous power frequency AC, to drive the operation of high power density brushless electric machine.
What be that direct current machine and extraneous power frequency AC supply with due to high power density brushless electric machine is industrial-frequency alternating current.When percussion drill is connected with extraneous power supply by power line, need increase and decrease that alternating current is converted into galvanic rectification and filter.That is, in the present embodiment, percussion drill also comprises the power line for being connected with extraneous power supply and is arranged at rectification and the filter in casing 7, and wherein, rectification and filter can directly be integrated on controller 5, also can arrange separately.The industrial-frequency alternating current that extraneous power supply is supplied with is introduced percussion drill by power line, becomes direct current to the supply of high power density brushless electric machine after over commutation and filter.Wherein, rectification and filter are containing a large electric capacity.Current conventional power frequency AC is 220-240V or 110-127V, by regulating rectification and filter to adapt to different power frequency ACs, and then expands the territory of use of the percussion drill that the utility model embodiment provides.
Because the current strength of extraneous power frequency AC is larger, preferably, between rotor core 3 and armature spindle 2, be provided with insulating sleeve 12.
Preferably, strutting piece 1 and casing 7 that the utility model embodiment provides are plastic supporting pieces, with the double insulated requirement of implementation tool, have further improved safety in utilization.
In the present embodiment, strutting piece 1 is the support rod of arranging perpendicular to armature spindle 2, when guaranteeing to reach supporting role, is convenient to the axial adjustment of armature spindle 2.
But, because needs arrange power line, hindered the operation of percussion drill, therefore, in the present embodiment, preferably, driving the power supplier of high power density brushless electric machine operation is power brick.What supply with due to power brick is direct current, to realize power brick, directly to high power density brushless electric machine, powers.Battery pack after charging is in powering to high power density brushless electric machine, and the operation of effectively having avoided percussion drill to be connected by power line with extraneous electric supply installation, has also avoided in operating process because power line hinders the situation that percussion drill operates.
Further, power brick is arranged in casing 7.Effectively avoided power brick external and affect the normal situation about using of percussion drill.
Also power brick can be arranged at outside casing 7, on casing 7, be provided with the interface being connected with power brick.Power brick is connected with casing 7 by interface, and it is connected with high power density brushless electric machine conduction.
Wherein, casing 7 and strutting piece 1 structure that is formed in one.
In the present embodiment, chuck 6 is manually fastened drill chuck, spanner-type drill chuck, self-tightening drill chuck or tightens formula drill chuck.Also can be set to other types, at this, introduce no longer one by one.
In this specification, each embodiment adopts the mode of going forward one by one to describe, and each embodiment stresses is the difference with other embodiment, between each embodiment identical similar part mutually referring to.
Above-mentioned explanation to the disclosed embodiments, makes professional and technical personnel in the field can realize or use the utility model.To the multiple modification of these embodiment, will be apparent for those skilled in the art, General Principle as defined herein can, in the situation that not departing from spirit or scope of the present utility model, realize in other embodiments.Therefore, the utility model will can not be restricted to these embodiment shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (10)
1. a percussion drill, comprise casing (7), it is characterized in that, in described casing (7), be provided with strutting piece (1) and be set up in the high power density brushless electric machine on described strutting piece (1), the controller of described high power density brushless electric machine (5) is arranged in described casing (7);
Described high power density brushless electric machine comprises that rotation is arranged at the armature spindle (2) of described strutting piece (1), and the chuck of described percussion drill (6) is fixed on one end of described armature spindle (2);
Described armature spindle (2) is provided with impact moving gear (10) away from one end of described chuck (6), is provided with the quiet gear of impact (11) with the corresponding setting of described impact moving gear (10) in described casing (7).
2. percussion drill as claimed in claim 1, is characterized in that, also comprises the fan (9) being arranged on described armature spindle (2).
3. percussion drill as claimed in claim 2, is characterized in that, described fan (9) is arranged at described rotor core (3) near a side of described chuck (6); Or described fan (9) is arranged at described rotor core (3) away from a side of described chuck (6); Or the quantity of described fan (9) is two, one is positioned at described rotor core (3) near a side of described chuck (6), and another is positioned at described rotor core (3) away from a side of described chuck (6).
4. percussion drill as claimed in claim 1, is characterized in that, described high power density brushless electric machine is internal rotor high power density brushless electric machine;
Described high power density brushless electric machine also comprises: the rotor core (3) that is sheathed on described armature spindle (2) outside, the stator (4) that is arranged at described rotor core (3) outside, is arranged at the permanent magnet (8) between described stator (4) and described rotor core (3).
5. percussion drill as claimed in claim 4, it is characterized in that, described stator (4) comprises stator core (41), is a plurality ofly wound in the stator enamelled wire group (42) in described stator core (41) and is arranged at the cold air duct (43) in described stator core (41).
6. percussion drill as claimed in claim 5, it is characterized in that, described cold air duct (43) is comprised of the gap between the gap between adjacent two described stator enamelled wire groups (42) and described stator core (41) and described rotor core (3).
7. percussion drill as claimed in claim 1, is characterized in that, also comprises the power line for being connected with extraneous power frequency AC and is arranged at rectification and the filter in described casing (7);
Between described rotor core (3) and described armature spindle (2), be provided with insulating sleeve (12).
8. percussion drill as claimed in claim 1, is characterized in that, described strutting piece (1) is the support rod of arranging perpendicular to described armature spindle (2).
9. percussion drill as claimed in claim 1, is characterized in that, driving the power supplier of described high power density brushless electric machine operation is power brick.
10. percussion drill as claimed in claim 9, is characterized in that, described power brick is arranged in described casing (7), or described power brick is arranged at outside described casing (7), and described casing is provided with the interface being connected with described power brick on (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420290908.6U CN203871989U (en) | 2014-05-30 | 2014-05-30 | Percussion drill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420290908.6U CN203871989U (en) | 2014-05-30 | 2014-05-30 | Percussion drill |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203871989U true CN203871989U (en) | 2014-10-08 |
Family
ID=51652910
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420290908.6U Expired - Fee Related CN203871989U (en) | 2014-05-30 | 2014-05-30 | Percussion drill |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203871989U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105538104A (en) * | 2016-02-01 | 2016-05-04 | 浙江绿动电机科技有限公司 | Straight grinding tool |
-
2014
- 2014-05-30 CN CN201420290908.6U patent/CN203871989U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105538104A (en) * | 2016-02-01 | 2016-05-04 | 浙江绿动电机科技有限公司 | Straight grinding tool |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141008 |