CN206677900U - The function change-over device of electric hammer four - Google Patents
The function change-over device of electric hammer four Download PDFInfo
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- CN206677900U CN206677900U CN201720515983.1U CN201720515983U CN206677900U CN 206677900 U CN206677900 U CN 206677900U CN 201720515983 U CN201720515983 U CN 201720515983U CN 206677900 U CN206677900 U CN 206677900U
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- knob
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- gearshift
- eccentric shaft
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Abstract
The utility model discloses a kind of function change-over device of electric hammer four, including casing, upper and lower covers, side lid, connecting rod piston component, eccentric shaft, volute spring, clutch, driven gear, conical tooth shaft, bevel gear wheel, gearshift wheel, gearshift spring, work head assembly, the side is covered provided with knob, casing is provided with knob eccentric shaft, gearshift push pedal and selector fork are provided with casing, gearshift push pedal one end is arranged between bevel gear wheel and gearshift wheel, the push pedal other end of shifting gears is provided with the isosceles triangle connecting hole coordinated with knob eccentric shaft, selector fork one end is arranged between clutch and driven gear, the selector fork other end is provided with the notch coordinated with knob eccentric shaft.Using after this structure, have the advantages that it is simple and reasonable, production it is easy to assembly, operation flexibly, function switch it is steadily reliable.
Description
Technical field
Power tools technology field is the utility model is related to, particularly a kind of electric hammer drill gear, hammer gear, neutral, pick gear function
The function change-over device of electric hammer four of switching.
Background technology
With the fast development of China's economy, electric hammer purposes is also increasing, is widely used in construction industry, decorative craft, society
The workplaces such as meeting service trade, industrial and mining enterprises, the brill gear of electric hammer is realized for convenience, hammers gear, neutral, pick gear function switch into shape,
Function change-over device is designed with electric hammer.But existing function change-over device is typically realized by two knobs, it is desirable to is used
The problem of person has certain operative knowledge and using experience, and it is present be complicated, assembly precision requirement height, poor reliability,
Service life is short, if misoperation, easily cause function switch separation it is not thorough, power and energy is unreliable.Therefore, many sections
Grind unit and manufacturer is developed and developed, but there has been no comparatively ideal product so far to emerge.
The content of the invention
To overcome drawbacks described above existing for prior art, the purpose of this utility model one is to provide a kind of conjunction simple in construction
Manage, produce easy to assembly, operation flexibly light, function switch it is steady it is reliable, using effect is good, the long lifespan function of electric hammer four is cut
Changing device.
The utility model solves technical scheme used by above-mentioned technical problem, and it fixes upper including casing, with casing
Lower cover and Bian Gai, connecting rod piston component, eccentric shaft, volute spring, clutch, driven gear, conical tooth shaft, bevel gear wheel, gearshift
Wheel, gearshift spring, work head assembly, the knob hole of the side lid are provided with knob, and the knob core bore of casing is provided with and knob
Fixed knob eccentric shaft, casing is interior to be provided with gearshift push pedal and selector fork, and the shift fork of gearshift push pedal one end is arranged on auger tooth
Between wheel and gearshift wheel, the gearshift push pedal other end is provided with the isosceles triangle connecting hole coordinated with knob eccentric shaft, selector fork one end
Jaw be arranged between clutch and driven gear, the selector fork other end be provided with knob eccentric shaft coordinate notch.
Further scheme of the present utility model, the knob hole of the side lid are provided with boring gear, hammer gear, neutral, pick gear four
Functional localization groove corresponding to function phase, knob are provided with the gearshift positioning trip being engaged with functional localization groove.
Further scheme of the present utility model, rotational angle is 55 degree between the brill gear and the functional localization groove of hammer gear,
Rotational angle is 65 degree between hammer gear and the functional localization groove of neutral, the rotational angle between the functional localization groove of neutral and pick gear
For 70 degree.
After said structure, have the following advantages compared with prior art and effect：When it is simple in construction, operate flexibly side
Just, gearshift push pedal driven by a knob and knob eccentric shaft and selector fork achieve that electric hammer drill keep off, hammer gear, neutral,
Pick keeps off four functions.Two be due to that knob gearshift positioning trip coordinates with the functional localization groove that side covers, and function switch is steadily reliable,
Using effect is good.
Brief description of the drawings
Fig. 1 is decomposition texture schematic diagram of the present utility model.
Fig. 2 is fit structure schematic diagram when the utility model bores gear function.
Fit structure schematic diagram when Fig. 3 is the utility model hammer gear function.
Fit structure schematic diagram when Fig. 4 is the utility model neutral function.
Fig. 5 is fit structure schematic diagram when the utility model pick keeps off function.
Fig. 6 is the overall co-ordination structural representation of the utility model electric hammer.
Wherein 1 motor, 2 lower covers, 3 driven gears, 4 selector forks, 5 clutches, 6 volute springs, 7 eccentric shafts, 8 connecting rods are lived
Plug assembly, 9 conical tooth shafts, 10 casings, 11 gearshift push pedals, 12 knob eccentric shafts, 13 side lids, 14 knobs, 15 bevel gear wheels, 16 gearshifts
Wheel, 17 gearshift springs, 18 check plates, 19 stop are followed closely, 20 packing rings, 21 retaining springs, 22 inner sleeves, 23 needle rollers, 24 work heads, on 25
Lid, 26 isosceles triangle connecting holes, 27 notches, 28 functional localization grooves.
Embodiment
It is the specific embodiment of the function change-over device of the utility model electric hammer four, it includes shown in Fig. 1, Fig. 2 and Fig. 6
Motor 1, casing 10, the upper and lower covers 25,2 fixed with casing 10 and left and right side lid 13, connecting rod piston component 8, eccentric shaft 7, taper
Spring 6, clutch 5, driven gear 3, conical tooth shaft 9, bevel gear wheel 15, gearshift wheel 16, gearshift spring 17, work head assembly, work
Making head assembly includes check plate 18, stop nail 19, packing ring 20, retaining spring 21, inner sleeve 22, needle roller 23, work first 24, eccentric shaft
7 are rotatably arranged on casing 10 by bearing, and volute spring 6, clutch 5, selector fork 4, driven gear 3 are successively from case
The bottom of body 10 loads eccentric shaft 7, and the knob hole of the left side lid 13 is provided with knob 14, and the knob core bore of casing 10 is provided with
The knob eccentric shaft 12 fixed with knob 14, casing 10 is interior to be provided with gearshift push pedal 11 and selector fork 4, gearshift push pedal 11 one end
Shift fork is arranged between bevel gear wheel 15 and gearshift wheel 16, and gearshift push pedal 11 other end is provided with the product coordinated with knob eccentric shaft 12
Font connecting hole 26, the knob core bore of its isosceles triangle connecting hole 26 alignment casing 10 are simultaneously connected on knob eccentric shaft 12, shifted gears
For the vertical direction shank of shift fork 4 after gearshift push pedal 11, the jaw of the one end of selector fork 4 is arranged on clutch 5 and driven tooth
Between wheel 3, the other end of selector fork 4 is provided with the notch 27 coordinated with knob eccentric shaft 12, and notch 27 is also directed at the knob of casing 10
Core bore region.
In order to which assurance function switching is reliable, the knob hole of the side lid 13 is provided with boring gear, hammer gear, neutral, pick gear four
Functional localization groove 28 corresponding to function phase, knob 14 are provided with the gearshift positioning trip being engaged with functional localization groove 28.It is described
Rotational angle is 55 degree between boring the functional localization groove 28 of gear and hammer gear, angle of rotation between hammer gear and the functional localization groove 28 of neutral
Spend for 65 degree, the rotational angle between neutral and the functional localization groove 28 of pick gear is 70 degree.
The utility model function switch process is as follows：Operator presses and turn knob 14, the arrow pair allowed on knob 14
Hammer gear functional pattern on quasi- left side lid 13, as shown in figure 3, then release knob 14, and Small-angle Rotation is done until hearing
" " peal, show that the gearshift positioning trip of knob 14 has blocked jail in the functional localization groove 28 of left side lid 13, electric hammer
It is locked in hammer gear functional location.
Hammer gear function switch principle is as follows：The isosceles triangle connecting hole 26 of the driving lever insertion gearshift push pedal 11 of knob eccentric shaft 12
Bottom and simultaneously insert selector fork 4 opening notch 27 on.Now the driving lever of knob eccentric shaft 12 is in the state that do not stress,
The gearshift front end shift fork of push pedal 11 is located between bevel gear wheel 15 and gearshift wheel 16 in groove.The U-shaped jaw of selector fork 4 is positioned at driven
Between gear 3 and clutch 5 in groove, selector fork 4 is also at free state.Therefore gearshift wheel 16 drives in the gearshift elastic force of spring 17
The clutch tooth of dynamic lower inner cavity end face engages with the clutch tooth of bevel gear wheel 15；Clutch 5 is under the driving of the elastic force of volute spring 6 simultaneously
Along the spline slide downward of eccentric shaft 7, until its bottom end face clutch tooth withstands on the top of driven gear 3.When motor 1 rotates
Driven gear 3 is driven, the top slot of driven gear 3 is engaged with the end face clutch tooth of clutch 5 automatically, and clutch 5 is rotated and passed through
Spline driving eccentric shaft 7 rotates, and simultaneously drive link piston component part 8 moves the rotation of eccentric shaft 7, and in the cylinder of work first 24
Inside realize that reciprocating impact moves.At the same time, driven gear 3 drives conical tooth shaft 9 to rotate again, and conical tooth shaft 9 drives bevel gear wheel 15
Rotate, the rotation of driving gearshift wheel 16 again, gearshift wheel 16 rotate driving needle roller 23, the drive cylinder of needle roller 23 when bevel gear wheel 15 rotates
Rotate, so as to realize hammer shelves function.
Operator is pressed on the basis of Fig. 3 and 55 degree of 14 angle of rotate counterclockwise knob, the arrow pair allowed on knob 14
Brill gear functional pattern on quasi- left side lid 13, as shown in Fig. 2 then release knob 14, and Small-angle Rotation is done until hearing
" " peal, show that the gearshift positioning trip of knob 14 has blocked jail in the functional localization groove 28 of left side lid 13, electric hammer
It is locked in brill gear functional location.
It is as follows to bore gear function switch principle：When being pressed on the basis of Fig. 3 and rotate counterclockwise knob 14, knob eccentric shaft
12 driving lever is from the bottom of isosceles triangle connecting hole 26 to middle part deep-slotted chip breaker transition and jacks up selector fork 4 upwards simultaneously, and gearshift is dialled
Pitch 4 driving clutchs 5 to overcome along the spline upward sliding of eccentric shaft 7 after the elastic force of volute spring 6, and drive clutch 5
Clutch tooth separated with the clutch slot of driven gear 3, motor 1 work when drive driven gear 3 rotate, eccentric shaft 7 and driven tooth
The relative slip of 3 endoporus is taken turns, eccentric shaft 7 does not rotate, and a holding motor 1-- driven gear 3-- conical tooth shaft 9-- bevel gear wheel 15 drives
Circuit, bevel gear wheel 15 rotate the rotation of driving gearshift wheel 16 again, and gearshift wheel 16 rotates driving needle roller 23, and the drive cylinder of needle roller 23 is only
It is rotated, gear function is bored so as to realize.
Operator is pressed on the basis of Fig. 3 and 65 degree of 14 angle of knob that turns clockwise, the arrow pair allowed on knob 14
Neutral functional pattern on quasi- left side lid 13, as shown in figure 4, then release knob 14, and Small-angle Rotation is done until hearing
" " peal, show that the gearshift positioning trip of knob 14 has blocked jail in the functional localization groove 28 of left side lid 13, electric hammer
It is locked in neutral functional location.
Neutral function switch principle is as follows：When being pressed on the basis of Fig. 3 and turning clockwise knob 14, knob eccentric shaft
12 driving lever has left the notch 27 of selector fork 4, and the driving lever of knob eccentric shaft 12 is simultaneously from the bottom of isosceles triangle connecting hole 26
Gearshift push pedal 11 is promoted to the transition of bottom semicircular hole and forward, gearshift push pedal promotes gearshift wheel 16, and gearshift wheel 16 overcomes gearshift bullet
Separated after the elastic force of spring 17 with bevel gear wheel 15, bevel gear wheel 15 still engages with conical tooth shaft 9, naturally it is also possible to using gearshift wheel
16 are made of one structure with bevel gear wheel 15, and gearshift push pedal 11 pushes directly on bevel gear wheel 15 and separated with conical tooth shaft 9, bevel gear wheel
15 and two kinds of structures of gearshift wheel 16 belong to the protection domain of this patent, the cylinder of bevel gear wheel 15 and work first 24 skids empty
Turn, gearshift wheel 16 stops the rotation motion with work first 24.During power-off, operator can easily rotate flat chisel to random angle manually
Degree, internal gear system will not be driven to rotate together during rotation work head cylinder, so as to which the flat pick angle of neutral function can be realized
Adjustment.The position is off working state.
Operator is pressed on the basis of Fig. 4 and 70 degree of 14 angle of knob that turns clockwise, the arrow pair allowed on knob 14
Pick gear functional pattern on quasi- left side lid 13, as shown in figure 5, then release knob 14, and Small-angle Rotation is done until hearing
" " peal, show that the gearshift positioning trip of knob 14 has blocked jail in the functional localization groove 28 of left side lid 13, electric hammer
It is locked in pick gear functional location.
Pick gear function switch principle is as follows：When being pressed on the basis of Fig. 4 and rotate counterclockwise knob 14, knob eccentric shaft
12 driving lever continues to promote gearshift push pedal 11 forward, and gearshift push pedal 11 promotes gearshift wheel 16 to continue forward, the end face of gearshift wheel 16
Prop up six stop on check plate 18 and follow closely 19 cylinder end faces, the semicircle head of six stop nails 19 is equipped with packing ring
20, retaining spring 21 applies elastic force in packing ring 20, gives six stop and follows closely 19 pretension elastic force, flat chisel is certain somewhat rotating manually
Under angle, first 24 rotational cylinder, the one very little angle of work is driven（Within 15 degree）, thus drive gearshift wheel 16 to rotate slightly, only
Dynamic nail 19 under the effect of pretension elastic force, a slight sound " " ring, i.e. the groove of 16 front ends of insertion gearshift wheel, now cylinder is locked in
One fixed angle.Now part gearshift wheel 16 is still in disengaged condition with bevel gear wheel 15, has cut off the rotation of work head cylinder
Transhipment is dynamic.Simultaneously as the driving lever of knob eccentric shaft 12 has left the notch 27 of selector fork 4, selector fork 4 and clutch 5
Under the effect of the elastic force of volute spring 6, the end face of the clutch tooth of clutch 5 downwardly against driven gear 3.Motor 1 drives when rotating
Driven gear 3 rotates, and the clutch tooth of clutch 5 falls into the clutch slot realization engagement of driven gear 3, and clutch 5 drives eccentric shaft 7
Rotation, the drive link piston component 8 of eccentric shaft 7 realizes the reciprocating motion of piston, so as to realize pick gear function.
It is described above, simply specific embodiment of the utility model, not the utility model is made any formal
Limitation, on the basis of the technical solution of the utility model is not departed from, made simple modification, equivalent variations or modification, falls
Enter the scope of protection of the utility model.
Claims (3)
1. a kind of function change-over device of electric hammer four, including casing (10), upper and lower covers (25,2) He Biangai fixed with casing (10)
(13), connecting rod piston component (8), eccentric shaft (7), volute spring (6), clutch (5), driven gear (3), conical tooth shaft (9), big
Bevel gear (15), gearshift wheel (16), gearshift spring (17), work head assembly, it is characterized in that：On the knob hole of the side lid (13)
Provided with knob (14), the knob core bore of casing (10) is provided with the knob eccentric shaft (12) fixed with knob (14), casing (10)
Interior to be provided with gearshift push pedal (11) and selector fork (4), the shift fork of gearshift push pedal (11) one end is arranged on bevel gear wheel (15) with changing
Between gear wheel (16), gearshift push pedal (11) other end is provided with the isosceles triangle connecting hole (26) coordinated with knob eccentric shaft (12), changes
The jaw of gear shift fork (4) one end is arranged between clutch (5) and driven gear (3), and selector fork (4) other end is provided with and rotation
The notch (27) that button eccentric shaft (12) coordinates.
2. the function change-over device of electric hammer four according to claim 1, it is characterized in that：Set on the knob hole of the side lid (13)
There is functional localization groove (28) corresponding with boring gear, hammer gear, neutral, pick four function phases of gear, knob (14) is provided with and functional localization
The gearshift positioning trip that groove (28) is engaged.
3. the function change-over device of electric hammer four according to claim 2, it is characterized in that：The functional localization for boring gear and hammer gear
Between groove (28) rotational angle be 55 degree, hammer gear with the functional localization groove (28) of neutral between rotational angle be 65 degree, neutral and
Rotational angle between the functional localization groove (28) of pick gear is 70 degree.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720515983.1U CN206677900U (en) | 2017-05-10 | 2017-05-10 | The function change-over device of electric hammer four |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720515983.1U CN206677900U (en) | 2017-05-10 | 2017-05-10 | The function change-over device of electric hammer four |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206677900U true CN206677900U (en) | 2017-11-28 |
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ID=60406555
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720515983.1U Active CN206677900U (en) | 2017-05-10 | 2017-05-10 | The function change-over device of electric hammer four |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206677900U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107891402A (en) * | 2018-01-03 | 2018-04-10 | 尚才平 | The gearshift of three function electric hammer |
-
2017
- 2017-05-10 CN CN201720515983.1U patent/CN206677900U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107891402A (en) * | 2018-01-03 | 2018-04-10 | 尚才平 | The gearshift of three function electric hammer |
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| GR01 | Patent grant | ||
| GR01 | Patent grant |