CN205111782U - Trip gear of electric hammer - Google Patents
Trip gear of electric hammer Download PDFInfo
- Publication number
- CN205111782U CN205111782U CN201520842223.2U CN201520842223U CN205111782U CN 205111782 U CN205111782 U CN 205111782U CN 201520842223 U CN201520842223 U CN 201520842223U CN 205111782 U CN205111782 U CN 205111782U
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- plate
- clutch
- gear
- spring
- axle
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Abstract
The utility model provides a trip gear of electric hammer, includes conelet tooth axle, conelet tooth axle from the conical head hold overlap in proper order to the tail end be equipped with interval cover, bearing, gasket, drive gear, clutch -plate, spring, clamp plate, steel wire retainer ring is used to the axle, the spring compresses tightly on the clutch -plate with steel wire retainer ring is fixed through clamp plate, axle, the clutch -plate is equipped with the semi -circular boss of a plurality of towards a drive gear side surface, drive gear towards clutch -plate one side be equipped with with the clutch -plate on semi -circular boss assorted recess, the utility model has the characteristics of simple structure, reasonable in design, safe and reliable, stable performance, low in production cost etc.
Description
Technical field
The utility model relates to a kind of power tool guard, particularly a kind of trip gear of electric hammer.
Background technology
The design feature of electric hammer and the particularity of operation make it be widely used in fields such as building, constructions.Due to the unstability of the environment of use, in use, the condition of work sudden change of electric hammer causes electric hammer to transship or stall, drive disk assembly can be damaged time serious, even motor damage, in addition, stall is the reaction force of generation or is easy to hurt operating personnel; Be necessary very much so arrange trip mechanism for overcurrent protection between electric hammer Power output to drill bit.Trip gear adopted in the market adopts dropout portable plate, dropout fixed head, travelling gear and steel ball carry out overload protection dropout, when the moment of torsion of drill bit is greater than the power of travelling gear, skid between steel ball and travelling gear and extrude in the groove of travelling gear, by in the steel ball installing hole of jacking dropout fixed head, and extrude dropout portable plate Compress Spring from the opposite side of steel ball installing hole, thus realize the dropout of travelling gear and de-mouth fixed head, but the trip gear of this structure, after removing at resistance, because dropout portable plate in use easily produces skew, thus make steel ball very successfully not slip in the groove of travelling gear very under the action of the spring, trip gear is caused to lose efficacy, the spring that wherein trip gear adopts is that multiple disk spring or multiple cylindrical spring overlap, to ensure can there be enough restoring forces when resistance is removed by the groove of steel ball top passback moving gear, but the spring of this structure easily weares and teares after a long time use, and easily overlap when receiving larger pressure and stack, cause spring dieback to such an extent as to spring cannot throw off reset when resistance is removed, thus cause trip gear to lose efficacy.
Summary of the invention
The purpose of this utility model is to solve the deficiencies in the prior art, the utility model provides that a kind of structure is simple, reasonable in design, safe and reliable, stable performance, electric hammer that production cost is low trip gear.
The utility model solves the technical scheme that its technical problem adopts: a kind of trip gear of electric hammer, comprise small bevel gear axle, described small bevel gear axle is arranged with spacing cover, bearing, pad, travelling gear, clutch-plate, spring, pressing plate, axle-steel silk back-up ring successively from conehead end to tail end, described spring is fixed and clamped on clutch-plate by pressing plate, axle-steel silk back-up ring, described clutch-plate is provided with several semicircle boss towards travelling gear one side surface, and described travelling gear is provided with the groove matched with the semicircle boss on clutch-plate towards clutch-plate side.
Adopt said structure, when the moment of torsion of drill bit is greater than the power of travelling gear, semicircle boss on clutch-plate and travelling gear skid thus skid off in the groove of travelling gear, in the process of threading off, clutch-plate remains parallel with travelling gear, after removing at resistance, semicircle boss on clutch-plate very successfully slips in the groove of travelling gear under the action of the spring, effectively overcome steel ball in traditional structure block can not reset thus the situation causing trip gear to lose efficacy occur, effectively improve the stability of trip gear, security, reduce production cost.
As preferably, described spring is a trochoid spiral Compress Spring, and one end and the clutch-plate of the macropore of described spring abut against, and one end and the pressing plate of aperture abut against.Adopt said structure, avoid multiple spring and overlap to stack de-situation can not be divided to occur.
As preferably, the gauge of wire of described spring is 3.7 ~ 4.2mm.
As preferably, the maximum axial spacing of described pressing plate and clutch-plate is 6.0 ~ 6.5mm.
Adopting said structure, by controlling pressing plate and the maximum axial spacing of clutch-plate and the gauge of wire of spring, making the gap at least leaving about 2.0mm between it, avoid spring and overlap to stack and can not divide de-situation generation.
As preferably, described clutch-plate is provided with eight semicircle boss, and described travelling gear is provided with eight corresponding grooves.Adopt said structure, effectively improve the stability of trip gear.
The feature such as the utility model has that structure is simple, reasonable in design, safe and reliable, stable performance, production cost are low.
Accompanying drawing explanation
Fig. 1 is the structural representation of this practical embodiment;
Fig. 2 is a kind of top view of this practical clutch-plate;
Fig. 3 is a kind of profile of this practical clutch-plate.
In figure: 1, detect power supply, 2, motor, 3, installing hole, 4, Transformer Rectifier module, 5, detection module, 6, automatically adjustment module, 7, logging modle.
Detailed description of the invention
Below by specific embodiment, and by reference to the accompanying drawings, the technical solution of the utility model is described in further detail.
Embodiment:
The trip gear of a kind of electric hammer as shown in Figure 1 to Figure 3, comprise small bevel gear axle 1, described small bevel gear axle 1 is arranged with spacing cover 9, bearing 8, pad 7, travelling gear 6, clutch-plate 5, spring 4, pressing plate 3, axle-steel silk back-up ring 2 successively from conehead end to tail end, described spring 4 is fixed and clamped on clutch-plate 5 by pressing plate 3, axle-steel silk back-up ring 2, described clutch-plate 5 is provided with eight semicircle boss 51 towards travelling gear 6 one side surface, and described travelling gear 6 is provided with eight grooves 61 matched with the semicircle boss 51 on clutch-plate 5 towards clutch-plate 5 side.
When the moment of torsion of drill bit is greater than the power of travelling gear 6, semicircle boss 51 on clutch-plate 5 skids with travelling gear 6 thus skids off in the groove 61 of travelling gear 6, in the process of threading off, clutch-plate 5 remains parallel with travelling gear 6, after removing at resistance, semicircle boss 51 on clutch-plate 5 very successfully slips in the groove 61 of travelling gear 6 under the effect of spring 4, effectively overcome steel ball in traditional structure block can not reset thus the situation causing trip gear to lose efficacy occur, effectively improve the stability of trip gear, security, reduce production cost.
As preferably, described spring 4 is a trochoid spiral Compress Spring, and one end and the clutch-plate 5 of the macropore of described spring 4 abut against, and one end and the pressing plate 3 of aperture abut against; The gauge of wire of described spring 4 is 4.0mm; Described pressing plate 3 is 6.0mm with the maximum axial spacing of clutch-plate 5.By controlling pressing plate and the maximum axial spacing of clutch-plate and the gauge of wire of spring, making the gap at least leaving about 2.0mm between it, avoiding spring and overlapping to stack and can not divide de-situation generation.
The feature such as the utility model has that structure is simple, reasonable in design, safe and reliable, stable performance, production cost are low.
Above-described embodiment is one of the present utility model preferably scheme, not does any pro forma restriction to the utility model, also has other variant and remodeling under the prerequisite not exceeding the technical scheme described in claim.
Claims (5)
1. the trip gear of an electric hammer, comprise small bevel gear axle (1), it is characterized in that: described small bevel gear axle (1) is arranged with spacing cover (9) successively from conehead end to tail end, bearing (8), pad (7), travelling gear (6), clutch-plate (5), spring (4), pressing plate (3), axle-steel silk back-up ring (2), described spring (4) is by pressing plate (3), axle-steel silk back-up ring (2) is fixed and clamped on clutch-plate (5), described clutch-plate (5) is provided with several semicircle boss (51) towards travelling gear (6) side surface, described travelling gear (6) is provided with the groove (61) matched with the semicircle boss (51) on clutch-plate (5) towards clutch-plate (5) side.
2. the trip gear of electric hammer according to claim 1, is characterized in that: described spring (4) is a trochoid spiral Compress Spring, and one end and the clutch-plate (5) of the macropore of described spring (4) abut against, and one end of aperture and pressing plate (3) abut against.
3. the trip gear of electric hammer according to claim 2, is characterized in that: the gauge of wire of described spring (4) is 3.7 ~ 4.2mm.
4. the trip gear of electric hammer according to claim 1, is characterized in that: described pressing plate (3) is 6.0 ~ 6.5mm with the maximum axial spacing of clutch-plate (5).
5. the trip gear of electric hammer according to claim 1, is characterized in that: described clutch-plate (5) is provided with eight semicircle boss (51), and described travelling gear (6) is provided with eight corresponding grooves (61).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520842223.2U CN205111782U (en) | 2015-10-28 | 2015-10-28 | Trip gear of electric hammer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520842223.2U CN205111782U (en) | 2015-10-28 | 2015-10-28 | Trip gear of electric hammer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205111782U true CN205111782U (en) | 2016-03-30 |
Family
ID=55567428
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520842223.2U Active CN205111782U (en) | 2015-10-28 | 2015-10-28 | Trip gear of electric hammer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205111782U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107914248A (en) * | 2018-01-12 | 2018-04-17 | 江苏恒丰电动工具有限公司 | A kind of portable dial is turned round |
| CN112571528A (en) * | 2020-10-27 | 2021-03-30 | 孙刚 | Can reduce padauk door of installation location degree of difficulty |
-
2015
- 2015-10-28 CN CN201520842223.2U patent/CN205111782U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107914248A (en) * | 2018-01-12 | 2018-04-17 | 江苏恒丰电动工具有限公司 | A kind of portable dial is turned round |
| CN112571528A (en) * | 2020-10-27 | 2021-03-30 | 孙刚 | Can reduce padauk door of installation location degree of difficulty |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |