CN205734746U - Overload automatic clutch electric hammer - Google Patents
Overload automatic clutch electric hammer Download PDFInfo
- Publication number
- CN205734746U CN205734746U CN201620717440.3U CN201620717440U CN205734746U CN 205734746 U CN205734746 U CN 205734746U CN 201620717440 U CN201620717440 U CN 201620717440U CN 205734746 U CN205734746 U CN 205734746U
- Authority
- CN
- China
- Prior art keywords
- wheel shaft
- angular wheel
- gear
- secondary gear
- electric hammer
- 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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- Percussive Tools And Related Accessories (AREA)
Abstract
nullThe utility model discloses a kind of overload automatic clutch electric hammer，Including drill chuck (1)、Housing (2)、Runner assembly (4)、Impact assembly (7)、Motor (6)、Camshaft (9)、Transmission clutch mechanism (3)，Camshaft (9) is provided with one-stage gear (8) and eccentric (10)，Described transmission clutch mechanism (6) includes angular wheel shaft (12)，Angular wheel shaft (12) is provided with cone pinion (11)，Angular wheel shaft (12) is arranged on housing (2)，Flat shim (13) it is sequentially provided with on angular wheel shaft (12)、Friction plate (14)、Secondary gear (15)、Ball retainer (17)、Compress with nut (19) again after flexible member (18)，Some balls (16) it are evenly equipped with on ball retainer (17)，Secondary gear (15) end face is provided with the spherical pit (20) matched with some balls (16)，Secondary gear (15) engages with one-stage gear (8).Use after said structure, have simple and reasonable, production and processing convenient, homogeneity of product and good operating stability, the advantage such as safe and reliable.
Description
Technical field
This utility model relates to the electric tool that a kind of boring burrows, particularly a kind of during boring burrows overload or
The overload automatic clutch electric hammer of protection can be played during stall.
Background technology
When electric hammer burrows owing to holing on metope or ground, speed is fast, and efficiency is high, is widely used in construction and dress
The fields such as semi-annular jade pendant construction, are liked by vast user deeply.But electric hammer owing to using the unstability of environment, is born in use process
Carry and constantly undergo mutation, usually can cause electric hammer overload or stall, time serious, can damage mechanical transmission component and motor, overload or
The counteracting force produced during stall is also easy to cause personal injury accidents.In order to ensure to use the person and machine to use safety,
Between electric hammer power intake and outfan install friction type automatic clutch mechanism, this mechanism include angular wheel shaft, secondary gear,
Two friction plates and two flat shims, secondary gear is rotatably arranged on angular wheel shaft, two friction plates and two plain cushions
Sheet is correspondingly arranged at the both sides of secondary gear, then utilizes nut to make friction plate clamp secondary gear.Although using this structure energy
Reach the purpose of overload protection, but there is also following weak point: one is when there is overload or stall, and separating effect is unstable
Fixed, product is the poorest.Two be when release overload or stall after, be difficult to return to original operating state, keep original safety from
Close moment of torsion, stability is bad, output moment of torsion can constantly decline, cause machine normally not use, to user bring many not
Just.To this end, many manufacturers and knowledgeable people develop and develop, but comparatively ideal product is the most not yet had to emerge.
Summary of the invention
For the drawbacks described above overcoming existing electric hammer to exist, the purpose of this utility model be to provide a kind of simple and reasonable,
Production and processing convenience, homogeneity of product and good operating stability, safe and reliable overload automatic clutch electric hammer.
This utility model solves the technical scheme that above-mentioned technical problem is used, and it includes drill chuck, housing, rotating group
Part, impact assembly, motor, camshaft, transmission clutch mechanism, camshaft is provided with one-stage gear and eccentric, motor
Output gear axle engages with one-stage gear, and eccentric is connected with impact assembly, and one-stage gear is driven by transmission clutch mechanism and rotates
Assembly rotates, and described transmission clutch mechanism includes that angular wheel shaft, angular wheel shaft are provided with and the Rotatable umbrella tooth on runner assembly
The cone pinion of wheel engagement, angular wheel shaft is installed in rotation on housing by bearing, and angular wheel shaft is sequentially provided with plain cushion
Compress, if being evenly equipped with dry milling on ball retainer with nut again after sheet, friction plate, secondary gear, ball retainer, flexible member
Pearl, secondary gear end face is provided with the spherical pit matched with some balls, and secondary gear engages with one-stage gear.
The further scheme of this utility model, described secondary gear is rotatably arranged on angular wheel shaft, and flat shim can
Axially movably it is fixed on angular wheel shaft.
The further scheme of this utility model, described flexible member is elastic washer or spring.
After using said structure, compared with prior art have the following advantages: one is when there is overload or stall, and ball is protected
After holding the elastic force that frame overcomes flexible member, ball separates with the spherical pit on secondary gear end face, and ball is at ball retainer
Under drive, relative secondary gear moves in a circle, and secondary gear rotates relative to angular wheel shaft, thus reduces because of overload or stall
The machine breakdown brought and personal injury.Two is when overload or stall eliminate, and ball retainer promotes ball automatically with two
Spherical pit on level gear combines, and flexible member pushes down ball retainer and ball, and mechanical recovery normally works, thus reaches
The effect of clutch.Three is simple in construction, and production and processing is convenient, safe and reliable, stable work in work, good product consistency.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the fit structure schematic diagram of this utility model transmission clutch mechanism.
Fig. 3 is the decomposition texture schematic diagram of this utility model transmission clutch mechanism.
Wherein 1 drill chuck, 2 housings, 3 transmission clutch mechanisms, 4 runner assemblies, 5 Rotatable umbrella gears, 6 motors, 7 impact groups
Part, 8 one-stage gear, 9 camshafts, 10 eccentrics, 11 cone pinions, 12 angular wheel shafts, 13 flat shims, 14 friction plates, 15 2
Level gear, 16 balls, 17 ball retainers, 18 flexible members, 19 nuts, 20 spherical pits.
Detailed description of the invention
Shown in Fig. 1 to Fig. 3, for a kind of specific embodiments transshipping automatic clutch electric hammer of this utility model, it includes boring
Chuck 1, housing 2, runner assembly 4, impact assembly 7, motor 6, camshaft 9, transmission clutch mechanism 3, camshaft 9 is provided with
One-stage gear 8 and eccentric 10, the output gear axle of motor 6 engages with one-stage gear 8, and eccentric 10 is connected with impact assembly 7, and one
Level gear 8 drives runner assembly 4 to rotate by transmission clutch mechanism 3, and described transmission clutch mechanism 6 includes angular wheel shaft 12,
Angular wheel shaft 12 is provided with the cone pinion 11 engaged with the Rotatable umbrella gear 5 on runner assembly 4, and angular wheel shaft 12 passes through bearing
It is installed in rotation on housing 2, angular wheel shaft 12 is sequentially provided with flat shim 13, friction plate 14, secondary gear 15, ball guarantor
Compress with nut 19 again after holding frame 17, flexible member 18, ball retainer 17 is evenly equipped with some balls 16, secondary gear 15 end
Face is provided with the spherical pit 20 matched with some balls 16, and secondary gear 15 engages with one-stage gear 8.Described two grades
Gear 15 is rotatably arranged on angular wheel shaft 12, and flat shim 13 is axially displaceably fixed on angular wheel shaft 12.Described
Flexible member 18 elastic washer both can have been used can also to use spring, ball retainer 17 can be compressed, it is achieved cross be downloaded from
The dynamic purpose separated.
When this utility model occurs overload or stall, the moment of torsion of angular wheel shaft 12 is more than the power of secondary gear 15, ball
After retainer 17 overcomes the elastic force of flexible member 18 under ball 16 acts on, ball 16 and the spherical pit 20 on secondary gear 15
Separating, ball 16 moves in a circle with secondary gear 15 on ball retainer 17, and the relative angular wheel shaft 12 of secondary gear 15 revolves
Turn, thus realize transshipping the purpose being automatically separated.
When overload or stall eliminate, the power of secondary gear 15 keeps more than the output moment of torsion of angular wheel shaft 12, ball
Frame 17 promotes ball 16 spherical pit 20 on secondary gear 15 to be automatically combined, and flexible member 18 pushes down ball retainer 17 He
Ball 16, mechanical recovery normally works, thus reaches the purpose of transmission output power.
The above, simply specific embodiment of the utility model, not this utility model is made any pro forma
Limit, on the basis of without departing from the technical solution of the utility model, done simple modification, equivalent variations or modification, all fall
Enter protection domain of the present utility model.
Claims (3)
1. an overload automatic clutch electric hammer, including drill chuck (1), housing (2), runner assembly (4), impact assembly (7), motor
(6), camshaft (9), transmission clutch mechanism (3), camshaft (9) is provided with one-stage gear (8) and eccentric (10), motor
(6) output gear axle engages with one-stage gear (8), and eccentric (10) is connected with impact assembly (7), and one-stage gear (8) is by passing
Dynamic clutch (3) drives runner assembly (4) to rotate, and it is characterized in that: described transmission clutch mechanism (6) includes angular wheel shaft
(12), angular wheel shaft (12) is provided with the cone pinion (11) engaged with the Rotatable umbrella gear (5) on runner assembly (4), umbrella tooth
Wheel shaft (12) is installed in rotation on housing (2) by bearing, and angular wheel shaft (12) is sequentially provided with flat shim (13), friction
Compress with nut (19) again after sheet (14), secondary gear (15), ball retainer (17), flexible member (18), ball retainer
(17) being evenly equipped with some balls (16) on, secondary gear (15) end face is provided with the spherical pit matched with some balls (16)
(20), secondary gear (15) engages with one-stage gear (8).
Overload automatic clutch electric hammer the most according to claim 1, is characterized in that: described secondary gear (15) is rotationally
Being arranged on angular wheel shaft (12), flat shim (13) is axially displaceably fixed on angular wheel shaft (12).
Overload automatic clutch electric hammer the most according to claim 1 and 2, is characterized in that: described flexible member (18) is bullet
Property packing ring or spring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620717440.3U CN205734746U (en) | 2016-07-08 | 2016-07-08 | Overload automatic clutch electric hammer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620717440.3U CN205734746U (en) | 2016-07-08 | 2016-07-08 | Overload automatic clutch electric hammer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205734746U true CN205734746U (en) | 2016-11-30 |
Family
ID=57378176
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620717440.3U Expired - Fee Related CN205734746U (en) | 2016-07-08 | 2016-07-08 | Overload automatic clutch electric hammer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205734746U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022143637A1 (en) * | 2020-12-29 | 2022-07-07 | 江苏东成工具科技有限公司 | Electric tool |
-
2016
- 2016-07-08 CN CN201620717440.3U patent/CN205734746U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022143637A1 (en) * | 2020-12-29 | 2022-07-07 | 江苏东成工具科技有限公司 | Electric 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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20161130 Termination date: 20180708 |