CN202964595U - Three-function electric hammer - Google Patents
Three-function electric hammer Download PDFInfo
- Publication number
- CN202964595U CN202964595U CN 201220751527 CN201220751527U CN202964595U CN 202964595 U CN202964595 U CN 202964595U CN 201220751527 CN201220751527 CN 201220751527 CN 201220751527 U CN201220751527 U CN 201220751527U CN 202964595 U CN202964595 U CN 202964595U
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- cylinder
- driving cog
- function electric
- eccentric shaft
- tooth
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Abstract
The utility model discloses a three-function electric hammer which comprises a motor, a rotor spindle, a first driving cog, an eccentric shaft, a connecting rod, a piston, a cylinder, a tup, a punch hammer, a rotating sleeve, a second driving cog, a small gear shaft and cylinder sleeve teeth. The first driving cog is installed on the eccentric shaft and is connected with rotor spindle teeth in a meshing mode. The eccentric shaft is connected with one end of the connecting rod through an eccentric block arranged at the upper end of the eccentric shaft, and the other end of the connecting rod is connected with the piston. The piston is sleeved at the rear end inside the cylinder in a sliding mode. The rotating sleeve is sleeved at the front end of the cylinder in a sliding mode. The punch hammer is sleeved inside the rotating sleeve in a sliding mode. The tup is sleeved inside the cylinder in a sliding mode and placed at the rear end of the punch hammer. The first driving cog and the eccentric shaft are connected in an axial movement mode through a flat key. A mandril is arranged at the lower end of the first driving cog, and a return spring is installed at the upper end of the first driving cog in a pressing mode. The three-function electric hammer further comprises a switching knob which is transversely arranged, the lower end of the mandril and an eccentric head at the inner end of the switching knob are matched in an abutting against mode. The function transformation of the electric hammer is easy and practicable, operation is convenient, and the three-function electric hammer has the advantages of being safe and reliable, high in work efficiency, long in service life, compact in structure, small and exquisite in size and the like.
Description
Technical field:
The utility model relates to field of power tools, particularly a kind of electric hammer with hammer, brill, three kinds of functions of hammer drill.
Background technology:
The design feature of electric hammer and the particularity of operation make it be widely used in fields such as building, constructions, also its performance have been proposed high requirement thus, and at present on the market three function electric hammer exists following deficiency to await improving mostly:
The one, the function switch structure is complicated, operation inconvenience.
The 2nd, in practical application, the stuck phenomenon of drill bit appears in electric hammer sometimes in running, if do not end immediately the torsion of rotor axis of electric output and be not transferred to drill bit this moment, will produce huge torsion and get rid of and hinder operating personnel on drill bit, this is not made rational design yet have electric hammer now.
The 3rd, gear ratio in drive mechanism between each tooth meshing part design unreasonable causes the speed of service of electric hammer on the one hand unhappy, hammer drill efficient is not high, and also remote-effects have arrived service life of motor on the other hand.
The 4th, the fit dimension between reasonable arrangement cylinder assembly and transmission component thereof not, cause that electric hammer is bulky, weight is heavier, because electric hammer carries out operation by the hand-held machine of operator, also can produce shock and vibration etc. during machine work, excessive, overweight machine can be made troubles to the operator, not only can allow the operator easily tired, but also can cause to the operator danger of potential injury.
Summary of the invention:
The purpose of this utility model is to overcome above-mentioned the deficiencies in the prior art, and a kind of convenient functional conversion, safe and reliable, high efficiency, long service life are provided, and compact conformation, volume are small and exquisite, lightweight, are more suitable for the three function electric hammer in hand-held operation.
The purpose of this utility model realizes by following technical scheme:
a kind of three function electric hammer comprises motor, armature spindle, a driving cog, eccentric shaft, connecting rod, piston, cylinder, percussion hammer, block stamp, pivoted housing, No. two driving cogs, little tooth axle, the cylinder sleeve tooth, wherein, a driving cog is arranged on eccentric shaft and with the armature spindle tooth and is connected with a joggle, eccentric shaft is connected with connecting rod one end by the eccentric block of end disposed thereon, the connecting rod other end is connected with piston, the piston slip cap is contained in rear end in cylinder, the pivoted housing slip cap is contained in the cylinder front end, the block stamp slip cap is contained in pivoted housing, the percussion hammer slip cap is contained in cylinder and is positioned at the block stamp rear end, No. two driving cogs are arranged on little tooth axle and with the armature spindle tooth and are connected with a joggle, little tooth axle upper end and cylinder sleeve tooth tooth are connected with a joggle, the cylinder sleeve tooth is sleeved on the cylinder outside, a described driving cog can move axially by flat key with eccentric shaft and be connected, a described driving cog lower end is provided with push rod, the upper end is pressed with return spring, the conversion knob that also comprises a horizontally set, described push rod lower end is supported with the eccentric head of this conversion knob inner end and is coordinated.
in No. two driving cog lower ends, the dropout fixed head is installed successively on described little tooth axle, the first elastic spring, the dropout portable plate, disk spring, the first adjusting pad and the second elastic spring, wherein, described disk spring is fixed and clamped on the dropout portable plate by the first adjusting pad and the second elastic spring, offer steel ball hole on described dropout fixed head, in described steel ball hole, steel ball is installed, described No. two driving cog lower surfaces are provided with stopper slot, described steel ball upper end is stretched in stopper slot, the lower end is compressed by the dropout portable plate, described dropout portable plate also is pressed on the driving cog lower surface by the first elastic spring No. two with the dropout fixed head, described No. two driving cogs coordinate with little tooth shaft clearance, the upper end of described No. two driving cogs is spacing by little tooth axle bearing and the second adjusting pad.
Described disk spring has four, and stack in twos forms two groups, relatively is fitted in together between two groups.
Described cylinder sleeve tooth can move axially by flat key with cylinder and be connected, and described cylinder sleeve tooth and another conversion knob are connected.
The gear ratio of a described driving cog and No. two driving cogs and armature spindle was respectively 29: 5 and 33: 5, and the gear ratio of described cylinder sleeve tooth and little tooth axle is 35: 8.
Described cylinder bore diameter is 20mm, and the greatest limit distance between described piston and percussion hammer is 49-50mm, and the minimal compression distance is 11-12mm.
The centre-to-centre spacing of described connecting rod is 36mm, and the eccentric throw of described eccentric shaft is 10mm.
Be provided with steel ball on described cylinder front inner wall, offer the chute that coordinates with steel ball on described pivoted housing, the displacement of described pivoted housing in cylinder was limited by steel ball and coordinating of chute, and its maximum moving distance is 6.5mm.
The maximum moving distance of described block stamp in pivoted housing is 13mm.
The utility model has following advantage with respect to prior art:
1, the function conversion is simple, easy to operate, only needs to rotate corresponding knob and gets final product.
2, in the time of can drill bit is stuck in the electric hammer running, ends at once motor by the dropout of steel ball and continue to be transferred to drill bit through the torsion of armature spindle output, get rid of and hinder operating personnel thereby prevent from producing on drill bit huge torsion, improve the security of operation.
3, by improving the gear ratio between each tooth meshing part in drive mechanism, and then reach the purpose of optimizing gear ratio, the speed of service of electric hammer and hammer drill efficient are improved.Simultaneously, compare with the drive mechanism of existing electric hammer, in the situation that reach the equal speed of service, the motor of the utility model electric hammer does work still less, loss is less, thus the service life that also can improve motor.
4, by optimizing the fit dimension between cylinder assembly and transmission component thereof, reached the purpose of dwindling the electric hammer volume, alleviating electric hammer weight, it is more suitable on the one hand in hand-held operation, the various potential dangers that exist because operating inconvenience in the time of also preventing from operating on the other hand, safe and reliable.
Description of drawings:
Fig. 1 is the general assembly structural representation of the utility model three function electric hammer.
Fig. 2 is the structural representation of the medium and small tooth axle of Fig. 1 and upper-part thereof.
The specific embodiment:
As depicted in figs. 1 and 2, the described a kind of three function electric hammer of the present embodiment comprises motor 1, armature spindle 2, driving cog 3, eccentric shaft 4, connecting rod 5, piston 6, cylinder 7, percussion hammer 8, block stamp 9, pivoted housing 10, No. two driving cogs 11, little tooth axle 12, cylinder sleeve tooth 13.wherein, a driving cog 3 is arranged on eccentric shaft 4 and with armature spindle 2 teeth and is connected with a joggle, eccentric shaft 4 is connected with connecting rod 5 one ends by the eccentric block 41 of end disposed thereon, connecting rod 5 other ends are connected with piston 6, piston 6 slip caps are contained in cylinder 7 interior rear end, pivoted housing 10 slip caps are contained in cylinder 7 front ends, block stamp 9 slip caps are contained in pivoted housing 10, percussion hammer 8 slip caps are contained in cylinder 7 and are positioned at block stamp 9 rear ends, No. two driving cogs 11 are arranged on little tooth axle 12 and with armature spindle 2 teeth and are connected with a joggle, little tooth axle 12 upper ends and cylinder sleeve tooth 13 teeth are connected with a joggle, cylinder sleeve tooth 13 is sleeved on cylinder 7 outsides.A driving cog 3 can move axially by flat key with eccentric shaft 4 and be connected, No. one driving cog 3 lower ends are provided with push rod 14, the upper end is pressed with return spring 15, also comprises the conversion knob 16 of a horizontally set, and the bias of push rod 14 lower ends and this conversion knob 16 inner ends 161 is supported and coordinated.During use, stir clockwise conversion knob 16, the moving driving cog 3 of shipper pole on push rod 14 is thrown off and the coordinating of armature spindle 2, thereby cut off the function of " hammer ", realization " hammer " turns " brill ".
In No. two driving cog 11 lower ends, dropout fixed head 17, the first elastic spring 18, dropout portable plate 19, disk spring 20, the first adjusting pad 21 and the second elastic spring 22 are installed successively on little tooth axle 12.wherein, disk spring 20 is fixed and clamped on dropout portable plate 19 by the first adjusting pad 21 and the second elastic spring 22, offer steel ball hole 171 on dropout fixed head 17, steel ball 23 is installed in steel ball hole 171, No. two driving cog 11 lower surfaces are provided with stopper slot 111, steel ball 23 upper ends are stretched in stopper slot 111, the lower end is compressed by dropout portable plate 19, dropout portable plate 19 also is pressed on driving cog 11 lower surfaces by the first elastic spring 18 No. two with dropout fixed head 17, No. two driving cogs 11 and little tooth axle 12 matched in clearance, the upper end of No. two driving cogs 11 is spacing by little tooth axle bearing 24 and the second adjusting pad 25.Disk spring 20 has four, and stack in twos forms two groups, relatively is fitted in together between two groups, and the pretightning force that can improve disk spring is set like this.When electric hammer drill bit in running is stuck, be that little tooth axle 12 maintains static, this moment, motor 1 outputed to the torsion of No. two driving cogs 11 greater than the thrust of 20 pairs of dropout fixed heads 17 of disk spring and steel ball 23 through armature spindle 2, make steel ball 23 skid off the realization dropout in the stopper slot 111 of No. two driving cogs 11, prevent that No. two torsion on driving cog 11 are transferred to drill bit via little tooth axle 12, get rid of and hinder operating personnel in order to avoid produce huge torsion on by drill-pipe-sticking-head.
Driving cog 3 and No. two driving cogs 11 were respectively 29: 5 and 33: 5 with the gear ratio of armature spindle 2, and cylinder sleeve tooth 13 is 35: 8 with the gear ratio of little tooth axle 12.
Be provided with steel ball 26 on cylinder 7 front inner wall, offer the chute 101 that coordinates with steel ball 26 on pivoted housing 10, the displacement of pivoted housing 10 in cylinder 7 was limited by steel ball 26 and coordinating of chute 101, and its maximum moving distance is 6.5mm.The maximum moving distance of block stamp 9 in pivoted housing 10 is 13mm.
Above-described embodiment is only for illustration of the utility model; and be not limitation of the utility model; the those of ordinary skill in relevant technologies field; in the situation that do not break away from spirit and scope of the present utility model; can also make a variety of changes and modification; therefore all technical schemes that are equal to also belong to category of the present utility model, and scope of patent protection of the present utility model should be limited by each claim.
Claims (9)
1. a three function electric hammer, comprise motor, armature spindle, a driving cog, eccentric shaft, connecting rod, piston, cylinder, percussion hammer, block stamp, pivoted housing, No. two driving cogs, little tooth axle, the cylinder sleeve tooth, wherein, a driving cog is arranged on eccentric shaft and with the armature spindle tooth and is connected with a joggle, eccentric shaft is connected with connecting rod one end by the eccentric block of end disposed thereon, the connecting rod other end is connected with piston, the piston slip cap is contained in rear end in cylinder, the pivoted housing slip cap is contained in the cylinder front end, the block stamp slip cap is contained in pivoted housing, the percussion hammer slip cap is contained in cylinder and is positioned at the block stamp rear end, No. two driving cogs are arranged on little tooth axle and with the armature spindle tooth and are connected with a joggle, little tooth axle upper end and cylinder sleeve tooth tooth are connected with a joggle, the cylinder sleeve tooth is sleeved on the cylinder outside, it is characterized in that: a described driving cog can move axially by flat key with eccentric shaft and be connected, a described driving cog lower end is provided with push rod, the upper end is pressed with return spring, the conversion knob that also comprises a horizontally set, described push rod lower end is supported with the eccentric head of this conversion knob inner end and is coordinated.
2. a kind of three function electric hammer according to claim 1, it is characterized in that: in No. two driving cog lower ends, the dropout fixed head is installed successively on described little tooth axle, the first elastic spring, the dropout portable plate, disk spring, the first adjusting pad and the second elastic spring, wherein, described disk spring is fixed and clamped on the dropout portable plate by the first adjusting pad and the second elastic spring, offer steel ball hole on described dropout fixed head, in described steel ball hole, steel ball is installed, described No. two driving cog lower surfaces are provided with stopper slot, described steel ball upper end is stretched in stopper slot, the lower end is compressed by the dropout portable plate, described dropout portable plate also is pressed on the driving cog lower surface by the first elastic spring No. two with the dropout fixed head, described No. two driving cogs coordinate with little tooth shaft clearance, the upper end of described No. two driving cogs is spacing by little tooth axle bearing and the second adjusting pad.
3. a kind of three function electric hammer according to claim 2, it is characterized in that: described disk spring has four, and stack in twos forms two groups, relatively is fitted in together between two groups.
4. according to claim 1 and 2 or 3 described a kind of three function electric hammers, it is characterized in that: described cylinder sleeve tooth can move axially by flat key with cylinder and be connected, and described cylinder sleeve tooth and another conversion knob are connected.
5. according to claim 1 and 2 or 3 described a kind of three function electric hammers is characterized in that: the gear ratio of a described driving cog and No. two driving cogs and armature spindle was respectively 29: 5 and 33: 5, and the gear ratio of described cylinder sleeve tooth and little tooth axle is 35: 8.
6. according to claim 1 and 2 or 3 described a kind of three function electric hammers, it is characterized in that: described cylinder bore diameter is 20mm, and the greatest limit distance between described piston and percussion hammer be 49-50mm, and minimal compression is apart from being 11-12mm.
7. according to claim 1 and 2 or 3 described a kind of three function electric hammers, it is characterized in that: the centre-to-centre spacing of described connecting rod is 36mm, the eccentric throw of described eccentric shaft is 10mm.
8. according to claim 1 and 2 or 3 described a kind of three function electric hammers, it is characterized in that: be provided with steel ball on described cylinder front inner wall, offer the chute that coordinates with steel ball on described pivoted housing, the displacement of described pivoted housing in cylinder was limited by steel ball and coordinating of chute, and its maximum moving distance is 6.5mm.
9. according to claim 1 and 2 or 3 described a kind of three function electric hammers, it is characterized in that: the maximum moving distance of described block stamp in pivoted housing is 13mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220751527 CN202964595U (en) | 2012-12-18 | 2012-12-18 | Three-function electric hammer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220751527 CN202964595U (en) | 2012-12-18 | 2012-12-18 | Three-function electric hammer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202964595U true CN202964595U (en) | 2013-06-05 |
Family
ID=48505723
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220751527 Expired - Lifetime CN202964595U (en) | 2012-12-18 | 2012-12-18 | Three-function electric hammer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202964595U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106895131A (en) * | 2015-12-21 | 2017-06-27 | 博世电动工具（中国）有限公司 | Sealing ventilation device and the equipment including it |
-
2012
- 2012-12-18 CN CN 201220751527 patent/CN202964595U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106895131A (en) * | 2015-12-21 | 2017-06-27 | 博世电动工具（中国）有限公司 | Sealing ventilation device and the equipment including it |
| CN106895131B (en) * | 2015-12-21 | 2024-01-23 | 博世电动工具（中国）有限公司 | Sealing ventilation device and equipment comprising same |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: ZHEJIANG DESHI ELECTRIC APPLIANCE CO., LTD. Free format text: FORMER OWNER: LI YUEHUI Effective date: 20150429 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20150429 Address after: 321300 No. 28 East Yinchuan Road, Yongkang Economic Development Zone, Zhejiang Patentee after: ZHEJIANG DESHI ELECTRICAL APPLIANCE CO.,LTD. Address before: 321300 Shizhu village, Shizhu Town, Yongkang City, Zhejiang Patentee before: Li Yuehui |
|
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 321300 No. 111, Jingui South Road, Chengxi New District, Yongkang City, Jinhua City, Zhejiang Province (self declaration) Patentee after: Zhejiang Deshuo Technology Co.,Ltd. Address before: 321300 No. 111, Jingui South Road, Chengxi New District, Yongkang City, Jinhua City, Zhejiang Province (self declaration) Patentee before: Zhejiang Deshuo Electric Appliance Co.,Ltd. |
|
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 321300 No. 111, Jingui South Road, Chengxi New District, Yongkang City, Jinhua City, Zhejiang Province (self declaration) Patentee after: Zhejiang Deshuo Electric Appliance Co.,Ltd. Address before: 321300 No. 28 Yinchuan East Road, Yongkang Economic Development Zone, Zhejiang Province Patentee before: ZHEJIANG DESHI ELECTRICAL APPLIANCE CO.,LTD. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130605 |