CN2770890Y

CN2770890Y - Multifunctional light electric hammer

Info

Publication number: CN2770890Y
Application number: CN 200520100166
Authority: CN
Inventors: 王文江
Original assignee: Individual
Current assignee: ZHEJIANG SKT ELECTRIC MACHINE CO Ltd
Priority date: 2005-01-16
Filing date: 2005-01-16
Publication date: 2006-04-12
Anticipated expiration: 2015-01-16

Abstract

The utility model discloses a multifunctional light electric hammer, which comprises a drill bit driving mechanism 1, an impact bar 2, an impact hammer 3, a big gear 5, a rotating sleeve 6, an air cylinder 7, a motor 8, a casing 9 and a functional conversion mechanism 4, wherein the functional conversion mechanism 4 comprises a rotary knob switch, a functional conversion plate 11, a small gear 20, a gear clutch 21, a bearing clutch 23, an oscillating lever bearing 25, a first stage gear 26 and a middle shaft 27. A stopping device is arranged on the casing 9 and is composed of a stopping plate 17, a stopping pin 16 and a stopping elastic strip 18. The stopping pin 16 is arranged on a pin hole of the stopping plate 17. The stopping elastic strip 18 is riveted on the stopping plate 17 and presses the stopping pin 16. The stopping pin 16 is matched with the external teeth of the gear clutch 21. The utility model adopting the structure has the advantages of simple and reasonable structure, convenient operation, reliable use, proper cost, etc.

Description

Multi-functional light-duty electric hammer

Technical field

The utility model relates to the improvement of a kind of electric tool, particularly a kind of multi-functional light-duty electric hammer.

Background technology

Along with developing rapidly of China's electric tool industry, after integrating brill, hammer, boring the multi-functional light-duty electric hammer listing of hammering into shape, be subjected to consumers in general's approval immediately; But multi-functional light-duty electric hammer exists following weak point in production and use: the one, and function switching mechanism complex structure, parts processing technology complexity cause production cost significantly to improve; The 2nd, when electric hammer used as hammer, wrong retaining, random retaining and damage phenomenon usually can appear in function switching mechanism gearshift poor reliability, bring inconvenience to the consumer.

Summary of the invention

For overcoming the disadvantage of above-mentioned existence, problem to be solved in the utility model provide a kind of simple and reasonable, easy to operate, use the multi-functional light-duty electric hammer reliable, that cost is suitable.The technical scheme that its technical problem that solves the utility model adopts comprises the drill bit transmission mechanism, impact bar, jump bit, gear wheel, turning set, cylinder, motor, housing and function switching mechanism, function switching mechanism comprises rotary switch, the function conversion sheet, pinion, engagement sleeve, bearing clutch, Oscillating lever bearing, the one-level gear, jackshaft, the function conversion sheet can be stirred translation on housing down at rotary switch, engagement sleeve and bearing clutch are provided with the turriform spring, the shift fork of function conversion sheet is between engagement sleeve and bearing clutch, spline fitted on engagement sleeve and bearing clutch and the jackshaft, described housing is provided with stop device, stop device is by locking plate, latch and stop shell fragment are formed, latch is contained on the pin-and-hole of locking plate, the riveting of stop shell fragment is on locking plate and push down latch, and the external tooth of latch and engagement sleeve mates.

In order to make the accurate positioning of turriform spring, described pinion is provided with step, and the turriform spring housing is pressed on the step.

Reliable for the ease of the conversion of function conversion sheet, described rotary switch is made up of knob base, knob pin, knob spring, knob and button, knob base is fixed on the housing, the S-type structure of knob pin, one end of knob pin is positioned on the knob, and the other end cooperates with the kidney groove of function conversion sheet bottom.

After adopting said structure, the external tooth of engagement sleeve is by the latch positive lock when electric hammer uses as hammer; The knob pin can prevent to drop, and can prevent that also knob 360 degree from rotating the operating position of knob pin, button and knob spring lockable function conversion sheet; Have advantages such as simple and reasonable, easy to operate, that use is reliable, cost is suitable.

Description of drawings

Fig. 1 is a structural representation of the present utility model.

Fig. 2 is the structural representation of the utility model function switching mechanism.

Fig. 3 is the structural representation that the A-A section stop device of Fig. 2 cooperates with engagement sleeve.

Fig. 4 is the schematic diagram of the utility model pinion.

Fig. 5 is the schematic diagram of the utility model engagement sleeve.

Fig. 6 is the schematic diagram of the utility model bearing clutch.

Fig. 7 is the schematic diagram of the utility model function conversion sheet.

Fig. 8 is the schematic diagram of the utility model knob pin.

The specific embodiment

Fig. 1 is to shown in Figure 8, specific embodiments for a kind of multi-functional light-duty electric hammer of the utility model, it comprises drill bit transmission mechanism 1, impact bar 2, jump bit 3, gear wheel 5, turning set 6, cylinder 7, motor 8, housing 9 and function switching mechanism 4, function switching mechanism 4 comprises rotary switch, function conversion sheet 11, pinion 20, engagement sleeve 21, bearing clutch 23, Oscillating lever bearing 25, one-level gear 26, jackshaft 27, one-level gear 26 cooperates with motor 8 output gear shafts, Oscillating lever bearing 25 cooperates with cylinder 7, on the jackshaft 27 of pinion 20 1 ends, be provided with little elastic spring 19, function conversion sheet 11 can be stirred translation on housing 9 down at rotary switch, engagement sleeve 21 and bearing clutch 23 are provided with turriform spring 24, the shift fork of function conversion sheet 11 is between engagement sleeve 21 and bearing clutch 23, spline fitted on engagement sleeve 21 and bearing clutch 23 and the jackshaft 27 also is provided with left and right sides elastic spring 22 on jackshaft 27, described housing 9 is provided with stop device, stop device is by locking plate 17, latch 16 and stop shell fragment 18 are formed, latch 16 is contained on the pin-and-hole of

locking plate

17,18 rivetings of stop shell fragment are on locking plate 17 and push down latch 16, and latch 16 mates with the external tooth of engagement sleeve 21; Described pinion 20 is provided with step 28, and turriform spring 24 covers are pressed on the step 28, play location turriform spring 24; Described rotary switch is made up of knob base 10, knob pin 12, knob spring 13, knob 14 and button 15, knob base 10 is fixed on the housing 9, knob pin 12 S-type structures, one end of knob pin 12 is positioned on the knob 14, the other end cooperates with the kidney groove 29 of function conversion sheet 11 bottoms, knob pin 12 S-type structures can prevent to drop, and can prevent that also knob 14 works 360 degree from rotating, and knob spring 13 and button 14 can play the gearshift positioning action.

Operation principle of the present utility model is as follows: when function conversion sheet 11 is in the centre position of engagement sleeve 21 and bearing clutch 23, engagement sleeve 21 and bearing clutch 23 are withstanding under the effect of turriform spring 24 on the elastic spring 22, thereby make jackshaft 27 and engagement sleeve 21, jackshaft 27 and bearing clutch 23 are combined into one by spline, when motor 8 drives jackshaft 27 rotations by one-level gear 26, jackshaft 27 drives pinion 20 successively by engagement sleeve 21 and bearing clutch 23 and Oscillating lever bearing 25 inner rings rotate, pinion 20 is again by gear wheel 5, turning set 6, drill bit transmission mechanism 1 drives drill bit and rotates, it is reciprocating that Oscillating lever bearing 25 drives cylinder 7, make jump bit 3 back and forth impact impact bar 2, impact bar 2 is drill hammer again, makes electric hammer reach the effect of boring and hammering into shape.

When function conversion sheet 11 is pushed the position on the left side by knob 14, engagement sleeve 21 by function conversion sheet 11 shift onto the left side and with pinion 20 on spline engagement, external tooth on the engagement sleeve 21 is locked by latch 16 simultaneously, pinion 20 skies are enclosed within on the jackshaft 27 can not rotate, at this moment, when jackshaft 27 rotates, 27 of jackshafts drive Oscillating lever bearing 25 inner rings by bearing clutch 23 and rotate, it is reciprocating that Oscillating lever bearing 25 drives cylinder 7, make jump bit 3 back and forth impact impact bar 2, impact bar 2 is drill hammer again, makes electric hammer reach the effect that hammer does not only bore.

When function conversion sheet 11 is pushed the position on the right by knob 14, bearing clutch 23 by function conversion sheet 11 shift onto the right and with the spline fitted of Oscillating lever bearing 25 inner ring engagements and disengaging and jackshaft 27, when jackshaft 27 rotates, 27 of jackshafts drive pinion 20 by engagement sleeve 21 and rotate, pinion 20 drives drill bit by gear wheel 5, turning set 6, drill bit transmission mechanism 1 again and rotates, and makes electric hammer reach the effect that brill is not only hammered into shape.

Claims

1, a kind of multi-functional light-duty electric hammer, comprise drill bit transmission mechanism (1), impact bar (2), jump bit (3), gear wheel (5), turning set (6), cylinder (7), motor (8), housing (9) and function switching mechanism (4), function switching mechanism (4) comprises rotary switch, function conversion sheet (11), pinion (20), engagement sleeve (21), bearing clutch (23), Oscillating lever bearing (25), one-level gear (26), jackshaft (27), function conversion sheet (11) can be stirred down at rotary switch and be gone up translation at housing (9), engagement sleeve (21) and bearing clutch (23) are provided with turriform spring (24), the shift fork of function conversion sheet (11) is positioned between engagement sleeve (21) and the bearing clutch (23), spline fitted on engagement sleeve (21) and bearing clutch (23) and the jackshaft (27), it is characterized in that: described housing (9) is provided with stop device, stop device is by locking plate (17), latch (16) and stop shell fragment (18) are formed, latch (16) is contained on the pin-and-hole of locking plate (17), latch (16) is gone up and pushed down to stop shell fragment (18) riveting at locking plate (17), and latch (16) mates with the external tooth of engagement sleeve (21).

2, multi-functional light-duty electric hammer according to claim 1, it is characterized in that: described pinion (20) is provided with step (28), and turriform spring (24) cover is pressed on the step (28).

3, multi-functional light-duty electric hammer according to claim 1 and 2, it is characterized in that: described rotary switch is made up of knob base (10), knob pin (12), knob spring (13), knob (14) and button (15), knob base (10) is fixed on the housing (9), the S-type structure of knob pin (12), one end of knob pin (12) is positioned on the knob (14), and the other end cooperates with the kidney groove (29) of function conversion sheet (11) bottom.