CN2517551Y - Electric hammer with automatic clutch function - Google Patents
Electric hammer with automatic clutch function Download PDFInfo
- Publication number
- CN2517551Y CN2517551Y CN 01277574 CN01277574U CN2517551Y CN 2517551 Y CN2517551 Y CN 2517551Y CN 01277574 CN01277574 CN 01277574 CN 01277574 U CN01277574 U CN 01277574U CN 2517551 Y CN2517551 Y CN 2517551Y
- Authority
- CN
- China
- Prior art keywords
- clutch
- reduction gearing
- reduction gear
- gear
- spring
- 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
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- Mechanical Operated Clutches (AREA)
Abstract
The utility model relates to an electric hammer with a function of auto clutching, belonging to the electric tools. The electric hammer comprises a hammer fixture, a rotation gas cylinder, a speed change device, a crank connecting rod impact structure and an electric motor, which is characterized in that a clutching structure is positioned in the reduction gear, the inner wall of the reduction gear is a curving surface with unequal radius vector, that is, the section profile of the inner wall of the reduction gear (4) is an arc curve line with unequal radius vector, a clutch support is fixed on a small tapper gear shaft (1), a plurality of radial grooves are positioned on the clutch support (5), a spring (2) is positioned in the groove, and a rolling pole (3) is positioned between each spring and the curved surface of the inner wall of the reduction gear. The utility model has the advantages of having safe and stable operation, and resistance to abrasion with the innovative clutch structure positioned in the reduction gear, ensuring the small variation of the buckle removing torque during operation, realizing the automatic clutch, and reaching the safe protection for the operator and the machine.
Description
Technical field the utility model belongs to electric tool.
The background technology electric hammer is the widely used electric tools of industry such as architectural engineering, indoor decoration, produce rotation and impulsive force is given tup by motor, transmission mechanism, cylinder etc., tup rotates with motor, when tup blocks, motor still rotates, and may cause machine breakdown on the one hand; May cause the people to shoot evil wounded on the one hand.
The summary of the invention the purpose of this utility model is to provide a kind of electric hammer that has tup and motor automatic disconnection function when overload, the technical scheme that the utility model is taked is: electric hammer is mainly by the tup anchor clamps, rotary cylinder, gear, crank connecting link beater mechanism and motor are formed, gear has a little conical tooth shaft, fix a reduction gearing on the little conical tooth shaft, reduction gearing is meshed with generator shaft gear, the awl tooth of little conical tooth shaft upper end is meshed with the ring gear of cylinder, the driven by motor reduction gearing is rotated, little conical tooth shaft rotates with reduction gearing, the rotation of drive cylinder, the utility model is provided with clutch in reduction gearing, reduction gearing becomes clutch gear, the reduction gearing inwall is that curved surface is not waited in utmost point footpath, the section that is the reduction gearing inwall is the circular curve that does not wait in utmost point footpath, fixes a clutch-pedal support on the little conical tooth shaft, and several radial slots are arranged on the clutch-pedal support, spring is set in the groove, between each spring and reduction gearing inwall curved surface a roller is arranged.Spring promoted the maximum utmost point that roller is in reduction gearing and directly locates when reduction gearing was static; when reduction gearing is rotated; roller rolls to the path direction under the effect of moment of torsion; when moment of torsion reaches the numerical value of design; roller is crossed the minimum utmost point and directly is in maximum utmost point path position; this moment, the reduction gearing and the little axis of cone were in the short time disengaged position; though motor rotates; cylinder does not but rotate; the tup that joins with cylinder does not rotate yet; realized automatic clutch, this moment is disable motor manually, reaches the safeguard protection to machine and operator.
The utility model has the advantages that, the clutch novel structure that in reduction gearing, is provided with, safe in utilization stable; wear-resisting durable, the moment variations that guarantees in use to thread off is very little, has realized automatic clutch; manually disable motor reaches the safeguard protection to machine and operator.
Description of drawings
Fig. 1 is the utility model cutaway view, omits handle and motor part among the figure;
Fig. 2 is the clutch gear cutaway view.
The specific embodiment comprises the tup anchor clamps, rotary cylinder, gear, crank connecting link beater mechanism and motor, gear has a little conical tooth shaft 1, conelet tooth outer shaft sleeve has a reduction gearing 4, this reduction gearing is meshed with generator shaft gear, the awl tooth of little conical tooth shaft upper end is meshed with the ring gear of cylinder 6, in reduction gearing, be provided with clutch, the reduction gearing inwall is that curved surface is not waited in utmost point footpath, the section that is reduction gearing 4 inwalls is the circular curve that does not wait in utmost point footpath, fix a clutch-pedal support on the little conical tooth shaft 1, several radial slots are arranged on the clutch-pedal support 5, spring 2 is set in the groove, between each spring and reduction gearing inwall curved surface a roller 3 is arranged.
Claims (1)
- A kind of electric hammer with automatic clutch function, comprise the tup anchor clamps, rotary cylinder, gear, crank connecting link beater mechanism and motor, gear has a little conical tooth shaft (1), conelet tooth outer shaft sleeve has a reduction gearing (4), this reduction gearing is meshed with generator shaft gear, the awl tooth of little conical tooth shaft upper end is meshed with the ring gear of cylinder (6), it is characterized in that in reduction gearing, being provided with clutch, the reduction gearing inwall is that curved surface is not waited in utmost point footpath, the section that is reduction gearing (4) inwall is the circular curve that does not wait in utmost point footpath, fix a clutch-pedal support on the little conical tooth shaft (1), clutch-pedal support has several radial slots on (5), spring (2) is set in the groove, between each spring and reduction gearing inwall curved surface a roller (3) is arranged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01277574 CN2517551Y (en) | 2001-12-28 | 2001-12-28 | Electric hammer with automatic clutch function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01277574 CN2517551Y (en) | 2001-12-28 | 2001-12-28 | Electric hammer with automatic clutch function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2517551Y true CN2517551Y (en) | 2002-10-23 |
Family
ID=33681305
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01277574 Expired - Fee Related CN2517551Y (en) | 2001-12-28 | 2001-12-28 | Electric hammer with automatic clutch function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2517551Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102261400A (en) * | 2011-06-14 | 2011-11-30 | 常熟市迅达粉末冶金有限公司 | Clutch for shaft |
| CN112091279A (en) * | 2020-10-13 | 2020-12-18 | 永康市富尔达工具有限公司 | Percussion drill with clamping protection structure |
-
2001
- 2001-12-28 CN CN 01277574 patent/CN2517551Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102261400A (en) * | 2011-06-14 | 2011-11-30 | 常熟市迅达粉末冶金有限公司 | Clutch for shaft |
| CN112091279A (en) * | 2020-10-13 | 2020-12-18 | 永康市富尔达工具有限公司 | Percussion drill with clamping protection structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |