CN2830000Y - Drill, hammer, pickaxe 3-function converter of swing link bearing structured electric hammer - Google Patents
Drill, hammer, pickaxe 3-function converter of swing link bearing structured electric hammer Download PDFInfo
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- CN2830000Y CN2830000Y CN 200520014519 CN200520014519U CN2830000Y CN 2830000 Y CN2830000 Y CN 2830000Y CN 200520014519 CN200520014519 CN 200520014519 CN 200520014519 U CN200520014519 U CN 200520014519U CN 2830000 Y CN2830000 Y CN 2830000Y
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- hammer
- rotary knob
- cam
- electric
- knob
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Abstract
The utility model discloses a drill, hammer, pickaxe three-function converter of swing link bearing structured electric hammers, which comprises a switch base 17 which is fixed on a gear box, a rotary knob 14, a rotary knob core 13 and a cam lever 11, wherein the rotary knob core 13 is arranged on the switch base 17 and the rotary knob 14 is fixed on the rotary knob core 13. The middle part of the rotary knob core 13 is provided with cam blocks 23 which are connected as integration, and the back end surface of the rotary knob core is provided with an eccentric pin 10 which is matched with a spline housing 3. The switch base 17 is hinged with a cam lever 11 via a pin shaft 12, and the cam blocks 23 on the rotary knob core 13 are matched with the cam lever 11. With adopting the structure, the swing link bearing structured electric hammer can accomplish the stable three-function conversion of an electric drill, an electric hammer and an electric pickaxe via the rotary knob 14. The utility model has the characteristics of simple and compact structure, convenient production and assembly, flexible and reliable conversion, low cost, safe use, etc.
Description
Technical field
The utility model relates to the switching mechanism of a kind of electric hammer function, particularly a kind of electric drill of Oscillating lever bearing structure electric hammer, electric hammer, electric pick three function-changing devices.
Background technology
Electric hammer enjoys liking of users, but how to realize that function conversion is the electric hammer difficult point always owing to having electric drill, electric hammer, three kinds of functions of electric pick.At first, the conversion of electric hammer three functions uses two knobs to realize, this structural requirement user finishes by operating two knobs when function is changed, require the user that certain operative knowledge and use experience are arranged, and complex structure, troublesome poeration, manufacturing cost height, service life lack, and are now eliminated by producer and user gradually.At present, the conversion of electric hammer three functions uses single knob to realize, as Chinese patent 03221374.3 a disclosed a kind of button three functional entities that are used for the link-type heavy electric hammer, constitute by knob, driving lever, shift fork and torsion spring, one end of knob is a cam, the end face of cam is provided with pin, one end end of driving lever has a cam path that matches with cam, the cam end of knob promptly is inserted in this cam path, shift fork one end has chute, the pin that is located on the knob cam is promptly inserted within it, and an end of torsion spring links to each other with driving lever, and the other end is fixed on the housing of link-type electric hammer.Though this structure result of use on the link-type heavy electric hammer is better, on the electric hammer of Oscillating lever bearing structure, use just to be difficult to cooperate, and the assembly precision requirement to be high, the function conversion separates defectives such as not thorough, dumb.In view of above reason, on the electric hammer of Oscillating lever bearing structure, still can't use and promote.
Summary of the invention
For overcoming the above-mentioned disadvantage that existing Oscillating lever bearing structure electric hammer exists, problem to be solved in the utility model provides brill, hammer, pick three function-changing devices of a kind of simple and reasonable, production and easy to assembly, conversion flexibility and reliability, cost Oscillating lever bearing structure electric hammer low, safe in utilization.The technical scheme that its technical problem that solves the utility model adopts comprises switch base, knob, knob core and the cam lever that is fixed on the gearbox, the knob core is arranged on the switch base, knob is fixed on the knob core, the middle part of described knob core is provided with the cam bit that is connected as a single entity, and end face is provided with the cam pin that cooperates with spline housing thereafter; Be hinged with cam lever by bearing pin on the described switch base, cam bit and cam lever on the knob core are complementary.
In order to make the cam lever reliable operation, described bearing pin is provided with torsionspring, and torsionspring one end is arranged on the cam lever.
For the function conversion is accurately put in place, described switch base is provided with upper and lower location.
After adopting said structure, can make Oscillating lever bearing structure electric hammer realize the smooth conversion of electric drill, electric hammer, three kinds of functions of electric pick by operation knob; Have characteristics such as simple and compact for structure, production and easy to assembly, conversion flexibility and reliability, cost are low, safe in utilization.
Description of drawings
Plan structure schematic diagram when Fig. 1 is used for Oscillating lever bearing structure electric hammer for the utility model.
Fig. 2 is in the M-M cross-sectional view of electric drill state for Fig. 1 Oscillating lever bearing structure electric hammer.
Fig. 3 is rotated counterclockwise the M-M cross-sectional view that 90 degree Oscillating lever bearing structure electric hammers are in the electric hammer state for Fig. 1 knob.
Fig. 4 is rotated counterclockwise the N-N cross-sectional view that 180 degree Oscillating lever bearing structure electric hammers are in the electric pick state for Fig. 1 knob.
The specific embodiment
Fig. 1 is to shown in Figure 4, specific embodiments for the brill of a kind of Oscillating lever bearing structure of the utility model electric hammer, hammer, pick three function-changing devices, it comprises switch base 17, knob 14, knob core 13 and the cam lever 11 that is fixed on the gearbox, knob core 13 is arranged on the switch base 17, knob 14 is fixed on the knob core 13, the middle part of described knob core 13 is provided with the cam bit 23 that is connected as a single entity, and end face is provided with the cam pin 10 that cooperates with spline housing 3 thereafter; Be hinged with cam lever 11 by bearing pin 12 on the described switch base 17, the cam bit 23 on the knob core 13 is complementary with cam lever 11; Described bearing pin 12 is provided with torsionspring 9, and torsionspring 9 one ends are arranged on the cam lever 11; Described switch base 17 is provided with upper and lower location 16.
Further sketch the utility model below in conjunction with accompanying drawing and be used for the operation principle that Oscillating lever bearing structure electric hammer is realized electric drill, electric hammer, three kinds of functions of electric pick.
Shown in Figure 2, be in the M-M cross-sectional view of electric drill state for Fig. 1 Oscillating lever bearing structure electric hammer, under knob 14 controls, knob 14 drives cam pin 10 rotations by knob core 13, after overcoming gearshift spring 2 elastic force, spline housing 3 is depressed, make spline housing 3 and gear shaft 5 be in disengaged condition,, on gear shaft 5, be provided with shaft block ring 4 in order to guarantee spline housing 3 and gear shaft 5 reliable fit; At this moment, cam lever 11 is in released state with secondary driven gear assembly 6, and secondary driven gear assembly 6 is in engagement with gear shaft 5 under the effect of overload front spring 7.When 5 rotations of motor driven gear axle, spline housing 3 is in disengaged condition with gear shaft 5, and Oscillating lever bearing 1 is not worked, and piston 18 does not move reciprocatingly, and jump bit 19 does not clash into percussion hammer 22, and the hammer function is not worked; This moment, gear shaft 5 drove pivoted housing 8 rotations by secondary driven gear assembly 6, thereby realized the function of electric drill.
Fig. 3 is rotated counterclockwise the M-M cross-sectional view that 90 degree Oscillating lever bearing structure electric hammers are in the electric hammer state for Fig. 1 knob.When knob 14 is rotated counterclockwise 90 when spending, cam pin 10 is in released state to top offset and spline housing 3, spline housing 3 meshes by spline and gear shaft 5 under the promotion of gearshift spring 2, spline housing 3 and Oscillating lever bearing 1 engagement, in order to guarantee spline housing 3 and gear shaft 5 reliable fit, on gear shaft 5, be provided with shaft block ring 4; At this moment, cam lever 11 still is in released state with secondary driven gear assembly 6, and secondary driven gear assembly 6 is in engagement with gear shaft 5 under the effect of overload front spring 7.When 5 rotations of motor driven gear axle, gear shaft 5 drives Oscillating lever bearing 1 swing by spline housing 3, the fork of Oscillating lever bearing 1 drives piston 18 and moves reciprocatingly, jump bit 19 back and forth clashes into the function of percussion hammer 22 realization pick under compressed-air actuated effect, in order to limit percussion hammer 22 strokes, be provided with the forward and backward back-up ring 21,20 of percussion hammer in the pivoted housing 8; Meanwhile, gear shaft 5 drives pivoted housing 8 rotations by secondary driven gear assembly 6 again and realizes the function of brill, thereby realizes the function of electric hammer.
Fig. 4 is rotated counterclockwise the N-N cross-sectional view that 180 degree Oscillating lever bearing structure electric hammers are in the electric pick state for Fig. 1 knob.When knob 14 is rotated counterclockwise 180 when spending, knob 14 drives upwards jack-up of cam lever 11 by the cam bit on the knob core 13 23, after overcoming overload front spring 7 elastic force, secondary driven gear assembly 6 is held up, make secondary driven gear assembly 6 and gear shaft 5 be in disengaged condition; At this moment, still be in vacant state between cam pin 10 on the knob core 13 and the spline housing 3, by spline and gear shaft 5 engagements, spline housing 3 meshes with Oscillating lever bearing 1 spline housing 3 under the promotion of gearshift spring 2.When 5 rotations of motor driven gear axle, because secondary driven gear assembly 6 is in disengaged condition with gear shaft 5, secondary driven gear assembly 6 is not with gear shaft 5 rotations, so pivoted housing 8 is not worked; Gear shaft 5 is by 1 swing of spline housing 3 drive Oscillating lever bearings at this moment, and the fork of Oscillating lever bearing 1 drives piston 18 and moves reciprocatingly, jump bit 19 reciprocal bump percussion hammers 22 under compressed-air actuated effect, thereby the function of realization electric pick.
Claims (3)
1, a kind of brill of Oscillating lever bearing structure electric hammer, hammer, pick three function-changing devices, comprise the switch base (17), knob (14), knob core (13) and the cam lever (11) that are fixed on the gearbox, knob core (13) is arranged on the switch base (17), knob (14) is fixed on the knob core (13), it is characterized in that: the middle part of described knob core (13) is provided with the cam bit (23) that is connected as a single entity, and end face is provided with the cam pin (10) that cooperates with spline housing (3) thereafter; Described switch base (17) is gone up and is hinged with cam lever (11) by bearing pin (12), and the cam bit (23) on the knob core (13) is complementary with cam lever (11).
2, the brill of Oscillating lever bearing structure electric hammer according to claim 1, hammer, pick three function-changing devices, it is characterized in that: described bearing pin (12) is provided with torsionspring (9), and torsionspring (9) one ends are arranged on the cam lever (11).
3, the brill of Oscillating lever bearing structure electric hammer according to claim 1 and 2, hammer, pick three function-changing devices, it is characterized in that: described switch base (17) is provided with upper and lower location (16).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520014519 CN2830000Y (en) | 2005-08-31 | 2005-08-31 | Drill, hammer, pickaxe 3-function converter of swing link bearing structured electric hammer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520014519 CN2830000Y (en) | 2005-08-31 | 2005-08-31 | Drill, hammer, pickaxe 3-function converter of swing link bearing structured electric hammer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2830000Y true CN2830000Y (en) | 2006-10-25 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520014519 Expired - Fee Related CN2830000Y (en) | 2005-08-31 | 2005-08-31 | Drill, hammer, pickaxe 3-function converter of swing link bearing structured electric hammer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2830000Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010020097A1 (en) * | 2008-08-20 | 2010-02-25 | Yao Geng | An electric drill multifunctional converter |
-
2005
- 2005-08-31 CN CN 200520014519 patent/CN2830000Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010020097A1 (en) * | 2008-08-20 | 2010-02-25 | Yao Geng | An electric drill multifunctional converter |
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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 |
Granted publication date: 20061025 Termination date: 20140831 |
|
| EXPY | Termination of patent right or utility model |