CN201067895Y - Electric hammer device - Google Patents
Electric hammer device Download PDFInfo
- Publication number
- CN201067895Y CN201067895Y CNU2007200524801U CN200720052480U CN201067895Y CN 201067895 Y CN201067895 Y CN 201067895Y CN U2007200524801 U CNU2007200524801 U CN U2007200524801U CN 200720052480 U CN200720052480 U CN 200720052480U CN 201067895 Y CN201067895 Y CN 201067895Y
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- CN
- China
- Prior art keywords
- electric hammer
- cylinder sleeve
- drill bit
- chuck
- hammer device
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- 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
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Abstract
An electric hammer device comprises an electric hammer body, a handle part and a drill part which adopts steel ball opening spring type self-lock device comprising a cylinder sleeve, a cylinder sleeve gasket sleeved and connected with the cylinder sleeve, a spring piece garter spring, a spring, a collet core grid, a collet glue fixedly clamped on the end of the cylinder sleeve and a collet big glue which is sleeved on the outer part of the collet glue and fixedly clamped on the collet core grid; the cylinder sleeve is provided with a patchhole used for arranging the drill, and the inner wall of the patchhole is provided with at least two elliptic long holes along axial direction, and the elliptic long holes are internally provided with clamping steel balls. The utility model has the advantages of big contact surfaces of the drill and the cylinder sleeve, being not easy to be worn, small runout amount, stable rotation, small noise, improving the service life of the whole machine and the drill, fast dismounting process of the drill so as to reduce the operation danger coefficient in dangerous working areas like aloft areas for users, impact and reasonable structural design and being convenient to be used, at the same time, the position of the working mode regulating notch of the electric hammer device is reasonable and the failure rate is low.
Description
Technical field
The utility model relates to a kind of electric hammer device, relates in particular to a kind of novel electric hammer device that steel ball is driven spring formula self-locking cartridge device and working method adjustment retaining that has.
Background technology
The electric hammer of producing in the market and using, the cartridge device of its drill bit is generally internal key type circular hole list pearl positioning collet device, circular hole cylinder sleeve and round end drill bit stressed cooperation contact-making surface when drill bit is worked is little, make keyway wear and tear easily, it is big that the gap becomes, and then the bit bounce amplitude is increased, and very easily causing complete machine off-centre, seriously wave, drill bit comes off easily; In addition, the mode of single pearl position and lock makes drill bit easily produce beat because of the single load bearing decentraction, and stability is difficult to guarantee that the noise decibel is also high; Above cartridge device is energy-consuming consumptive material not only, but also has certain potential safety hazard.Simultaneously, the electric hammer of producing in the market and using, major part is a function singleness, the electric hammer that working method can't be adjusted; Minority has the electric hammer of preference pattern, the position of its working method adjustment retaining all is arranged on the side of electric hammer body, because the work under bad environment of electric hammer, have a large amount of dust and suspended particulate, these dirts infilter the electric hammer body by the space of adjusting retaining easily, cause circuit part short circuit or other mechanical breakdowns.
Therefore, need a kind of new electric hammer device solves the problems referred to above of invention.
The utility model content
The utility model provides a kind of electric hammer device that the two pearls of square hole open spring formula self-locking structure that has at the deficiency that above-mentioned prior art exists, and its cylinder sleeve and drill bit cooperate firmly, working stability, mechanical wear are little, safe and reliable; This electric hammer device has the working method adjustment retaining that the position is reasonable, fault rate is little simultaneously.
The utility model adopts following technological means in order to realize above-mentioned technical purpose:
A kind of electric hammer device, comprise the electric hammer body, be installed on handle portion, the bit part at described electric hammer body two ends respectively, described bit part adopts steel ball to drive spring formula self-locking device, it comprise the cylinder sleeve that is used for receiving drill bit, successively be socketed in cylinder sleeve packing ring on the described cylinder sleeve, shell fragment garter spring, spring, chuck heart bone, fixedly be connected in described cylinder sleeve end chuck glue, be sleeved on the big glue of chuck that described chuck glue outside fixedly is connected in described chuck heart bone simultaneously; Described cylinder sleeve is provided with the patchhole that is used to install drill bit, and described patchhole inwall is provided with at least two axial oval slotted holes, is provided with the screens steel ball in the described oval slotted hole.
Described chuck heart bone is bigger near the internal diameter of described cylinder sleeve front end, forms an indent step surface with described cylinder sleeve.
The axial location of described oval slotted hole is between the indent step surface of described shell fragment garter spring and described chuck heart bone.
The described drill bit described screens steel ball that links, described screens steel ball and the interlock of described shell fragment garter spring.
Big glue of described chuck and the interlock of described chuck heart bone, described chuck heart bone and the interlock of described spring.
Described drill bit is provided with and the corresponding keyway in the oval slotted hole position of described patchhole inwall.
Described patchhole is set to square.
The diameter of described screens steel ball is the distance of the keyway bottom of drill bit to the less internal diameter sidewall of chuck heart bone.
Described square patchhole inwall is provided with two axial oval slotted holes, lays respectively at two relative madial walls; Described drill bit is set to the square-section corresponding with described patchhole at insertion portion, and is provided with and the corresponding keyway in the oval slotted hole position of described patchhole inwall.
Described handle portion is provided with operating switch, and described handle portion also is provided with the adjustment retaining that is used to adjust the drill bit mode of operation, and described adjustment retaining is arranged between described operating switch and the described hand hammer body.
The electric hammer device that the utility model provides makes it have following beneficial effect owing to adopted above-mentioned pair of steel ball to open the structure of spring formula self-locking device: the stressed contact-making surface of (1) drill bit and cylinder sleeve greatly, not easy to wear, jerk value is little, rotation is steady, noise is little, service life of having improved complete machine and drill bit; (2) the drill bit dismounting is quick, has reduced the danger coefficient of user in dangerous zone operations such as work high above the ground; (3) structural design compact and reasonable, easy to use.The gear of the working method of this electric hammer device adjustment is simultaneously put rationally, fault rate is little.
Description of drawings
Fig. 1 is the bit part generalized section of an embodiment of a kind of electric hammer device of the utility model;
Fig. 2 is the schematic cross-section of cylinder sleeve and drill bit bound fraction among embodiment of a kind of electric hammer device of the utility model;
Fig. 3 is the partial cutaway schematic of cylinder sleeve structure among embodiment of a kind of electric hammer device of the utility model;
Fig. 4 is the structural profile schematic diagram that drill bit is packed among embodiment of a kind of electric hammer device of the utility model;
Fig. 5 is the structural profile schematic diagram that drill bit is deviate among embodiment of a kind of electric hammer device of the utility model;
Fig. 6 is the installation site schematic diagram of working method adjustment retaining among embodiment of a kind of electric hammer device of the utility model.
The specific embodiment
An embodiment of a kind of electric hammer device of the utility model, with reference to figure 1, it comprises cylinder sleeve 1, two steel balls 2, shell fragment garter spring 3, cylinder sleeve packing ring 4, spring 5, chuck heart bone 6, step surface 61, the big glue 7 of chuck, chuck glue 8, oval slotted hole 9, drill bit 10, keyway 11.Cylinder sleeve packing ring 4 fixes with cylinder sleeve 1, interfixes between the big glue 7 of chuck heart bone 6 and chuck, is actively socketed on outside the cylinder sleeve 1; Spring 5 is arranged between cylinder sleeve packing ring 4 and the chuck heart bone 6; With reference to figure 2, the drill bit patchhole on the cylinder sleeve 1 is square; With reference to figure 3, cylinder sleeve 1 has two axial oval slotted holes 9 at the correspondence position with the keyway 11 of drill bit 10; Cylinder sleeve 1 is with shell fragment garter spring 3 outside oval slotted hole 9 positions latter half of, chuck heart bone 6 is positioned at the first half of oval slotted hole 9, steel ball 2 is located in the oval slotted hole 9, and the diameter of steel ball 2 is the distance of the less internal diameter of chuck heart bone 6 to keyway 11 bottoms of drill bit 10; Chuck heart bone 6 is bigger near the internal diameter of cylinder sleeve 1 front end, forms a step surface 61 with cylinder sleeve 1.
Below in conjunction with Fig. 4 and Fig. 5 drill bit clamping process of the present utility model is described.Drill bit 10 anterior cones contact the steel ball 2 in the oval slotted hole 9, and when it is inwardly advanced, steel ball 2 struts shell fragment garter spring 3 do axially-movable, two steel balls 2 peak, when drill bit 10 advanced again, two steel balls 2 touched keyway 11, and entered the keyway 11 of drill bit 10, the screen resilience of shell fragment garter spring 3 forces steel ball 2 to enter between the keyway 11 of chuck heart bone 6 and drill bit 10, thereby clamping is located automatically.This moment, its cross section was with reference to figure 2.When need take out drill bit 10, applied thrust on the tapered slope of the big glue 7 of chuck, the integral shaft that the big glue 7 of chuck heart bone 6 and chuck is formed is to depressing, the drill bit 10 of choosing outward simultaneously, drive steel ball 2, it is entered in step surface 61 that chuck heart bone 6 and cylinder sleeve 1 form, drill bit 10 is pulled out get final product again.
Another embodiment of a kind of electric hammer device of the utility model, with reference to figure 6, it comprises bit part 201, electric hammer body 202, handle portion 203, operating switch 204, working method adjustment retaining 205, described adjustment retaining 205 is arranged between described operating switch 204 and the described hand hammer body 202, because its position is hidden relatively, certain blocking arranged, like this when work, moving a large amount of dust that produced of bit drills and suspended particulate infilter the electric hammer body with regard to being not easy by the space of adjusting retaining, avoid producing circuit part short circuit or other mechanical breakdowns.
The electric hammer device that the utility model provides makes it have following beneficial effect owing to adopted above-mentioned pair of steel ball to open the structure of spring formula self-locking device: the stressed contact-making surface of (1) drill bit and cylinder sleeve greatly, not easy to wear, jerk value is little, rotation is steady, noise is little, service life of having improved complete machine and drill bit; (2) the drill bit dismounting is quick, has reduced the danger coefficient of user in dangerous zone operations such as work high above the ground; (3) structural design compact and reasonable, easy to use.The gear of the working method of this electric hammer device adjustment is simultaneously put rationally, fault rate is little.
Above disclosed only is preferred embodiment of the present utility model, can not limit the interest field of the utility model certainly with this, and therefore the equivalent variations of being done according to the utility model claim still belongs to the scope that the utility model is contained.
Claims (10)
1. electric hammer device, comprise the electric hammer body, be installed on handle portion, the bit part at described electric hammer body two ends respectively, it is characterized in that, described bit part adopts steel ball to drive spring formula self-locking device, it comprise the cylinder sleeve that is used for receiving drill bit, successively be socketed in cylinder sleeve packing ring on the described cylinder sleeve, shell fragment garter spring, spring, chuck heart bone, fixedly be connected in described cylinder sleeve end chuck glue, be sleeved on the big glue of chuck that described chuck glue outside fixedly is connected in described chuck heart bone simultaneously; Described cylinder sleeve is provided with the patchhole that is used to install drill bit, and described patchhole inwall is provided with at least two axial oval slotted holes, is provided with the screens steel ball in the described oval slotted hole.
2. electric hammer device according to claim 1 is characterized in that, described chuck heart bone is bigger near the internal diameter of described cylinder sleeve front end, forms an indent step surface with described cylinder sleeve.
3. electric hammer device according to claim 2 is characterized in that, the axial location of described oval slotted hole is between the indent step surface of described shell fragment garter spring and described chuck heart bone.
4. electric hammer device according to claim 1 is characterized in that, the described drill bit described screens steel ball that links, described screens steel ball and the interlock of described shell fragment garter spring.
5. electric hammer device according to claim 1 is characterized in that, big glue of described chuck and the interlock of described chuck heart bone, described chuck heart bone and the interlock of described spring.
6. electric hammer device according to claim 1 is characterized in that, described drill bit is provided with and the corresponding keyway in the oval slotted hole position of described patchhole inwall.
7. electric hammer device according to claim 6 is characterized in that described patchhole is set to square.
8. electric hammer device according to claim 7 is characterized in that, the diameter of described screens steel ball is the distance of the keyway bottom of drill bit to the less internal diameter sidewall of chuck heart bone.
9. electric hammer device according to claim 8 is characterized in that, described square patchhole inwall is provided with two axial oval slotted holes, lays respectively at two relative madial walls; Described drill bit is set to the square-section corresponding with described patchhole at insertion portion, and is provided with and the corresponding keyway in the oval slotted hole position of described patchhole inwall.
10. according to the described electric hammer device of any claim of claim 1 to 9, it is characterized in that, described handle portion is provided with operating switch, described handle portion also is provided with the adjustment retaining that is used to adjust the drill bit mode of operation, and described adjustment retaining is arranged between described operating switch and the described hand hammer body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200524801U CN201067895Y (en) | 2007-06-07 | 2007-06-07 | Electric hammer device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200524801U CN201067895Y (en) | 2007-06-07 | 2007-06-07 | Electric hammer device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201067895Y true CN201067895Y (en) | 2008-06-04 |
Family
ID=39489268
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200524801U Expired - Fee Related CN201067895Y (en) | 2007-06-07 | 2007-06-07 | Electric hammer device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201067895Y (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102248521A (en) * | 2011-06-14 | 2011-11-23 | 常熟市迅达粉末冶金有限公司 | Tool chuck |
| CN101733736B (en) * | 2008-11-07 | 2011-12-07 | 苏州宝时得电动工具有限公司 | Chuck and power tool using same |
| WO2012041144A1 (en) * | 2010-09-30 | 2012-04-05 | 重庆润泽医疗器械有限公司 | Drill bit locking device and drill bit |
| CN102430772A (en) * | 2010-09-29 | 2012-05-02 | 苏州宝时得电动工具有限公司 | Electric tool and clamping head thereof |
| CN106625436A (en) * | 2015-11-01 | 2017-05-10 | 肖斌 | Electric percussion drill control circuit |
| CN115095589A (en) * | 2022-06-22 | 2022-09-23 | 四川航天长征装备制造有限公司 | Connecting pin |
-
2007
- 2007-06-07 CN CNU2007200524801U patent/CN201067895Y/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101733736B (en) * | 2008-11-07 | 2011-12-07 | 苏州宝时得电动工具有限公司 | Chuck and power tool using same |
| CN102430772A (en) * | 2010-09-29 | 2012-05-02 | 苏州宝时得电动工具有限公司 | Electric tool and clamping head thereof |
| WO2012041144A1 (en) * | 2010-09-30 | 2012-04-05 | 重庆润泽医疗器械有限公司 | Drill bit locking device and drill bit |
| CN102248521A (en) * | 2011-06-14 | 2011-11-23 | 常熟市迅达粉末冶金有限公司 | Tool chuck |
| CN106625436A (en) * | 2015-11-01 | 2017-05-10 | 肖斌 | Electric percussion drill control circuit |
| CN115095589A (en) * | 2022-06-22 | 2022-09-23 | 四川航天长征装备制造有限公司 | Connecting pin |
| CN115095589B (en) * | 2022-06-22 | 2023-06-02 | 四川航天长征装备制造有限公司 | Connecting pin |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080604 Termination date: 20100607 |