CN2661382Y

CN2661382Y - Hammer anvil

Info

Publication number: CN2661382Y
Application number: CNU2003201202169U
Authority: CN
Inventors: 桑树华
Original assignee: Positec Power Tools Suzhou Co Ltd
Current assignee: Positec Power Tools Suzhou Co Ltd
Priority date: 2003-12-02
Filing date: 2003-12-02
Publication date: 2004-12-08
Anticipated expiration: 2013-12-02
Also published as: EP1537955A2

Abstract

The utility model relates to a hammer drill, which comprises a motor, an intermediate shaft, a swinging rod bearing, a cylinder, a piston, a drill chuck, a drill head and a control device; wherein, the motor drives the intermediate shaft to rotate; the swinging rod bearing can be relatively and rotationally arranged on the intermediate shaft, and a clutch is arranged between the swinging rod bearing and the intermediate shaft; the cylinder is equipped with a large gear which can be meshed with a small gear on the intermediate shaft and can move relative to the axial direction of the cylinder; the rotation of the cylinder can drive the drill chuck, thereby driving the drill head to rotate; the control device moves the large gear and the clutch by a guiding element to control the meshing or detachment of the large gear with a third small gear as well as the clutch, thereby achieving the three working states of the hammer drill like hammering or drilling or hammering drilling .

Description

Hammer drill

Technical field

The utility model relates to a kind of hammer drill, especially relevant a kind of hammer drill with control device structure of three kinds of duties (hammer/brill/hammer drill).

Background technology

All need on concrete material or metal material, hole in a lot of engineerings, yet, when concrete hardness is higher, only rely on that the brill of drill bit is moving to be difficult to carry out high efficiency boring, this moment is if drill bit has an action of knocking, the concrete of high rigidity is smashed, just can significantly improve the efficient of boring, but do not need this hammer action when on metal material, holing again, present hammer drill generally has three kinds of duties (hammer/brill/hammer drill), the operator can select only duty according to workpiece material, to reach high efficiency boring.Just can realize described three kinds of duties as the hammer drill that is disclosed for European patent EP 0775555B1 number, but its control device structure complexity too is unfavorable for manufacturing.Therefore, be necessary to design a kind of comparatively simple hammer drill of structure of control device.

Summary of the invention

The hammer drill with three kinds of duties (hammer/brill/hammer drill) that provides a kind of control device simple in structure is provided the purpose of this utility model.

The purpose of this utility model is achieved in that a kind of hammer drill, comprise shell, motor, jackshaft, be located at percussion mechanism, transmission device, control device and working head on the jackshaft, motor one end extends output shaft, and this output shaft is provided with first pinion; Described jackshaft is provided with second pinion, the clutch and the third pinion that connect percussion mechanism and jackshaft, wherein, described first pinion and second pinion, clutch comprises standing part and movable part, transmission device one end is connected with percussion mechanism, the other end is connected with working head, one gear wheel key is located on the transmission device ordinatedly, and mesh with third pinion, described control device is by control knob, sliding part and guide are formed, guide is located on the shell regularly, sliding part is located on the guide slidably, control knob is rotatably installed on the shell, the sliding part that controlled button promotes is provided with first pushing part and second pushing part, first pushing part overlaps along the axial projection section of jackshaft with gear wheel along the axial projection of jackshaft, and second pushing part overlaps along the axial projection section of jackshaft with the clutch movable part along the axial projection of jackshaft.

The beneficial effects of the utility model are that control device is simple in structure, low cost of manufacture.

Description of drawings

Below in conjunction with drawings and Examples the utility model is further specified.

Fig. 1 is the cut-away view of the utility model hammer drill.

Fig. 2 is that the utility model hammer drill is in the local interior's structure chart under the hammer drill state.

Fig. 3 is the structure chart of the control device under Fig. 2 state;

Fig. 4 is that the utility model hammer drill is in the local interior's structure chart under the hammer state.

Fig. 5 is the structure chart of control device under Fig. 4 state;

Fig. 6 is that the utility model hammer drill is in the local interior's structure chart that only bores state.

Fig. 7 is the control device structure chart under Fig. 6 state;

Fig. 8 is the A-A direction amplification view of Fig. 1; Wherein:

10. shell 11. clamping parts

20. motor 21. output shafts 22. first pinions

30. jackshaft 31. third pinions 32. second pinions 33. teeth

40. Oscillating lever bearing 41. forks 42. first springs 43. axle sleeves

50. cylinder 51. gear wheels 52. second springs

60. piston 70. drill chucks 80. drill bits

100. control device 110. control knobs 111. eccentric shafts 112. screws 113. fasteners

114. the 3rd spring 120. guides

130. sliding part 131. chutes 132. perforation 134. second pushing parts, 133. first pushing parts

The specific embodiment

Specifically, be provided with motor in the hammer drill, motor one end is extended with output shaft, and output shaft is provided with first pinion; Jackshaft is parallel to output shaft, which is provided with second pinion, Oscillating lever bearing, clutch and third pinion, and second pinion and first pinion transmit power to jackshaft, and the power on the jackshaft can transfer to Oscillating lever bearing by clutch; Cylinder is parallel to jackshaft to be installed, and which is provided with a gear wheel, and this gear wheel can move vertically; Gear wheel and third pinion engagement can drive cylinder and rotate, and Oscillating lever bearing can drive the reciprocating motion of the pistons of cylinder; Control device is made up of control knob and sliding part, control knob is provided with an eccentric shaft, sliding part is provided with chute and wears therebetween for eccentric shaft, the rotation control knob, the displacement that eccentric shaft produces can be decomposed into along the displacement of chute and along the displacement of sliding part glide direction, and the rotation control knob can drive sliding part and produce corresponding slippage, is in disengaged position thereby clutch pushed open, or gear wheel pushed open make it break away from third pinion, thereby reach the purpose that the governor weight driller makes state.

Please join Fig. 1, hammer drill of the present utility model comprises a shell 10, and motor 20 is installed in this shell 10, and motor 20 1 ends are extended with output shaft 21, and output shaft is provided with first pinion 22.One jackshaft 30 be arranged in parallel with described output shaft 21, and jackshaft 30 is provided with second pinion 32 and third pinion 31, the

second pinions

32 and 22 engagements of first pinion, so that power is passed to jackshaft 30 from output shaft 21; Also be provided with an Oscillating lever bearing 40 on the jackshaft 30, be provided with clutch 33/43 between Oscillating lever bearing 40 and the jackshaft 30, further be arranged with first spring 42 between Oscillating lever bearing 40 and the clutch 33/43, to force clutch 33/43 to be in engagement, power is transferred to Oscillating lever bearing 40 from jackshaft 30.Wherein, clutch 33/43 is made up of with cooperate the axle sleeve of being located on the Oscillating lever bearing 40 43 with key the tooth on the jackshaft 30 33.Fork 41 is connected with piston 60, can drive piston 60 and move forward and backward.One cylinder 50 is set in outside the piston 60, described cylinder 50 is provided with gear wheel 51, with third pinion 31 engagements, gear wheel 51 can move along cylinder 60 axis directions, the one side is provided with second spring 52, force gear wheel 51 and third pinion 31 engagements, thereby the transmission of power on the jackshaft 30 is arrived cylinder 50, make its rotation.Cylinder one end is provided with drill chuck 70, is equiped with drill bit 80 on the described drill chuck 70.

See also Fig. 2 to Fig. 7, hammer drill of the present utility model also comprises a control device 100, and this control device 100 comprises control knob 110, guide 120 and sliding part 130.Control knob 110 is provided with an eccentric shaft 111, and sliding part 130 is provided with chute 131, to accommodate aforementioned eccentric shaft 111, also be provided with axis hole 132 on the sliding part 130, wear wherein for guide 120, axle 111 is arranged on the shell rotationally, so sliding part 130 can slide along this guide 120.Also be provided with first pushing part 133 and second pushing part 134 on the sliding part 130, rotation control knob 110, eccentric shaft 111 will produce the horizontal direction displacement, promoting sliding part 130 moves horizontally, first pushing part 133 and second pushing part 134 on the sliding part 130 promote gear wheel 51 and axle sleeve 43 respectively, thus the engagement or the disengaging of control gear wheel 51 and third pinion 31 and clutch 33/43.

Please join Fig. 2 and Fig. 3, the position that control knob 110 haircuts point to is the position of " hammer drill ", sliding part 130 mediates, and first pushing part 133 and second pushing part 134 do not promote gear wheel 51 and axle sleeve 43, and gear wheel 51 all is in engagement with third pinion 31 and clutch 33/43.Power is passed to cylinder 50 by the engagement of gear wheel 51 and third pinion 31, makes cylinder 50 drive drill bits 80 by drill chuck 70 and bores moving; Power is passed to Oscillating lever bearing 40 by clutch 33/43, and Oscillating lever bearing 40 drives piston 60 and seesaws, and produces impulsive force by the gas compression, thus the action that makes drill bit 80 produce hammer.

Please join Fig. 4 and Fig. 5, what control knob 110 haircuts pointed to is the position of " only hammer ", and sliding part is in the position that keeps left, and first pushing part 133 to left translation, breaks away from gear wheel 51 and third pinion 31 gear wheel 51, and cylinder loses rotary power, and drill bit does not bore; Clutch 33/43 still is in engagement, and at this moment, drill bit has only the action of hammer.

Please join Fig. 6 and Fig. 7, what control knob 110 haircuts pointed to is " only boring " position, sliding part is in the position of keeping right, second pushing part 134 will promote axle sleeve 43 and move right, until separating tooth 33, at this moment, Oscillating lever bearing 40 can rotate relative to jackshaft, Oscillating lever bearing 40 runs out of steam, and drill bit has only the action of brill.

Please join Fig. 8, control knob 110 is articulated on the shell 10 by screw 112, one fastener 113 is located at control knob 110 slidably, be provided with one the 3rd spring 114 between itself and the control knob 110, three duty control knob 110 present positions of shell 10 corresponding hammer drills are provided with three clamping parts 11, when control knob 110 be in these three states any one the time, fastener 113 fastens with these clamping parts 11, with control knob 110 location.During the conversion work state, fastener 113 is down pressed, made its restriction that breaks away from clamping part 11, thereby can rotate control knob 110.

Claims

1. hammer drill, comprise shell (10), motor (20), jackshaft (30), be located at percussion mechanism, transmission device, control device (100) and working head on the jackshaft (30), motor (20) one ends extend output shaft (21), and this output shaft is provided with first pinion (22); Described jackshaft (30) is provided with second pinion (32), the clutch and the third pinion (31) that connect percussion mechanism and jackshaft (30), wherein, described first pinion (22) and second pinion (32) engagement, clutch comprises standing part and movable part, transmission device one end is connected with percussion mechanism, the other end is connected with working head, one gear wheel (51) key is located on the transmission device ordinatedly, and mesh with third pinion (31), it is characterized in that: described control device (100) is by control knob (110), sliding part (130) and guide (120) are formed, guide (120) is located on the shell (10) regularly, sliding part (130) is located on the guide (120) slidably, control knob (110) is rotatably installed on the shell (10), the sliding part (130) that controlled button (110) promotes is provided with first pushing part (133) and second pushing part (134), first pushing part (133) overlaps along the axial projection section of jackshaft (30) with gear wheel (51) along the axial projection of jackshaft (30), and second pushing part (134) overlap along the axial projection section of jackshaft (30) with the clutch movable part along the axial projection of jackshaft (30).

2. hammer drill according to claim 1, it is characterized in that: be fixed with eccentric shaft (111) on the described control knob (110), this eccentric shaft (111) and control knob (110) and the casing turning cylinder that is connected that rotates parallels, have chute (131) on the sliding part (130), described eccentric shaft (111) is inserted in the described chute (131).

3. hammer drill according to claim 1 is characterized in that: guide (120) is one, and sliding part (130) is provided with perforation (132), and described axle (120) is arranged in the perforation (132) slidably.

4. hammer drill according to claim 1 is characterized in that: control knob (110) also is provided with fastener (113), and shell (10) is provided with clamping part (11).

5. hammer drill according to claim 4, it is characterized in that: be provided with flexible member (114) between described fastener (113) and the control knob (110), shell (10) is provided with three clamping parts (11), and described clamping part has the groove that is used to accommodate fastener (113) on (11).