CN201172204Y

CN201172204Y - Electric hammer adding with isolation mechanism

Info

Publication number: CN201172204Y
Application number: CNU2008200042004U
Authority: CN
Inventors: 胡振钱
Original assignee: Individual
Current assignee: Individual
Priority date: 2008-02-05
Filing date: 2008-02-05
Publication date: 2008-12-31
Anticipated expiration: 2018-02-05

Abstract

The utility model discloses an electric hammer which is additionally provided with an isolating mechanism. The electric hammer mainly comprises an electric motor, a reduction gear mechanism, an air compressing mechanism, a swing mechanism, a hammer-blow mechanism, a main handle, an auxiliary handle, a starting button and a shell; a reduction gear chamber, a crank-shaft chamber and a gyration cylinder chamber which are communicated in sequence are formed among the components inside the shell; a throttling-back sheet used for isolating the crank-shaft chamber and the cylinder gyration chamber is arranged between the crank-shaft chamber and the cylinder gyration chamber; gaps which enable air to pass through but do not enable lubricant to pass through are left both on the outer surface and the inner surface of the throttling-back sheet, and a sealing ring use for isolating the crank-shaft chamber and the reduction gear chamber is arranged between the crank-shaft chamber and the reduction gear chamber. The lubricant inside the crank-shaft chamber is prevented from releasing outside, thereby prolonging the service life of the electric hammer.

Description

Increase the electric hammer that interrupter is arranged

Technical field

The utility model more particularly, has the electric hammer of interrupter about a kind of electric tool about a kind of increase on the original basis.

Background technology

Existing a kind of electric hammer partly is made up of motor, reduction gear, gas pressure mechanism, slew gear, hammer mechanism and main handle, auxilliary handle, startup button, casing etc.Wherein bent axle, connecting rod, displacer, cylinder etc. are formed gas pressure mechanism, promote impact piston and produce bump.The residing space of gas pressure mechanism is referred to as crankshaft room, and the residing space of slew gear is referred to as to turn round cylinder chamber, and the residing space of reduction gear is referred to as the reduction gearing chamber.Crankshaft room with the revolution cylinder chamber with the revolution cylinder after spring bearing be the boundary; Crankshaft room and reduction gearing chamber are the boundary with the tank wall.

As shown in Figure 1, because between the outer surface and cabinet wall of back spring bearing 15, the part has bigger cavity, be the shape that communicates between crankshaft room 10 and the cylinder spin chamber 14; On the tank wall through hole that bent axle 12 is passed is arranged simultaneously, therefore also have bigger space between bent axle 12 and tank wall, promptly crankshaft room 10 also is the shape that communicates with reduction gearing chamber 11.Crankshaft room 10 tops be used in addition built-up crankshaft 12 parts such as grade and the filling lubricant capping 17.Since electric hammer when work displacer 160 with revolution cylinder 16 between and can the generation strong friction between other parts, for preventing sharp wear to take place between these parts and produce high temperature, in crankshaft room 10, be filled with the lubricant that parts such as bent axle 12, connecting rod, displacer 160 are lubricated, such as, the lubricating grease of certain model.But, because crankshaft room 10 and reduction gearing chamber 11, be connected state between the cylinder spin chamber 14, promptly have bigger gap, when causing electric hammer 1 work, lubricant will flow to cylinder spin chamber 14 and reduction gearing chamber 11 along these gaps, like this, lubricant in the crankshaft room 10 will be fewer and feweri, even flow to end fully, weaken or lose bent axle 12, connecting rod, the lubrication of displacer 160 parts such as grade, the huge friction and wear that splits will take place in these component movement surfaces, and finally cause displacer 160 to be killed bonding to cylinder 16, can't move, perhaps the gap of displacer 160 and 16 in cylinder of revolution increases gradually, and the sealing destruction between displacer 160 and the revolution cylinder 16 loses the ability of calming the anger, can not produce enough vapour pressures and drive impact piston, these all can cause electric hammer can't work or cisco unity malfunction.

The utility model content

In view of this, the purpose of this utility model is to provide a kind of increase that the electric hammer of interrupter is arranged, and by the increase of interrupter, can make electric hammer overcome the problem of above-mentioned existence.

Increasing in the utility model has the electric hammer of interrupter to mainly include motor, reduction gear, gas pressure mechanism, slew gear, hammer mechanism, main handle, auxilliary handle, start button and shell, and in described shell, be formed with successively the reduction gearing chamber that is communicated with between each parts, crankshaft room and revolution cylinder chamber, between described crankshaft room and described cylinder spin chamber, be provided with the throttling sheet that is used to isolate described crankshaft room and cylinder spin chamber, and all leave at the outer surface of described throttling sheet and inner surface gas is passed through and the intransitable slit of lubricant, and between described crankshaft room and described reduction gearing chamber, be provided with the sealing ring that is used to isolate described crankshaft room and described reduction gearing chamber.

The material of described sealing ring is a rubber.

Described sealing ring is set in outside the bent axle in the described reduction gear, in the gap that forms between described bent axle and described shell.

Described sealing ring include the interior ring that contacts with described bent axle outer wall, and with the outer shroud of described housing contacts, encircle in described to be connected in the bottom and take the shape of the letter U with described outer shroud.

Described throttling sheet is enclosed within the gap that forms between the outer wall of cylinder in the described gas pressure mechanism and the shell, and is positioned at an end of the bearing that is arranged on this gap.

Electric hammer in the utility model is by between crankshaft room and the reduction gearing chamber, be provided with sealing ring and throttling sheet between crankshaft room and the revolution cylinder chamber, make in can the long-term existence airtight relatively space of lubricant in the crankshaft room, can not leak loss, thereby can guarantee the sufficient lubrication of parts such as bent axle, connecting rod, displacer, make electric hammer energy long-term stable operation.

Description of drawings

Fig. 1 is the partial structurtes schematic diagram of electric hammer in the utility model;

Fig. 2 is along the cross-sectional schematic of A-A line among Fig. 1;

Fig. 3 is the schematic perspective view of sealing ring in the utility model;

Fig. 4 is the schematic perspective view of throttling sheet in the utility model.

The specific embodiment

Relevant detailed description of the present utility model and technology contents, conjunction with figs. is described as follows, however appended accompanying drawing only provides reference and explanation, is not to be used for the utility model is limited.

Electric hammer in the utility model is improved on the structure of existing electric hammer, and existing electric hammer is made up of parts such as motor, reduction gear, gas pressure mechanism, slew gear, hammer mechanism and main handle, auxilliary handle, startup button, casings.Because the utility model is that the structure of existing electric hammer is improved, so the utility model no longer is described in detail the concrete structure and the operation principle of existing electric hammer.

As shown in Figure 1, electric hammer of the present utility model is between crankshaft room 10 and reduction gearing chamber 11 sealing ring 2 to be set in existing electric hammer 1 inside, wherein bent axle 12 passes the middle part of sealing ring 2, be that sealing ring 2 is enclosed within outside the bent axle 12, the space that forms between the shell 13 of electric hammer 1 and the bent axle 12 is sealed.As shown in Figure 3, sealing ring 2 is made by elastomeric material, includes the interior ring 20 that contacts with bent axle 12 outer walls, and the outer shroud 21 that contacts with shell 13, and interior ring 20 and outer shroud 21 are connected in the bottom and take the shape of the letter U.

At an end that is arranged on the bearing 15 between crankshaft room 10 and the revolution cylinder chamber 14 throttling sheet 3 is set simultaneously, the outline of this throttling sheet 3 is identical or basic identical with shell 13 inner wall shape of electric hammer 1, as Fig. 2 and shown in Figure 4, there is circular hole 30 centre, cylinder 16 is passed from this circular hole 30, between the inwall of throttling sheet 3 outlines and shell 13, have between the outer wall of the mesopore 30 of throttling sheet 3 and cylinder 16 and gas is passed through and slit 31,32 that lubricant can not lead to.

When steam-cylinder piston 160 was reciprocating, the space of crankshaft room 10 can periodically increase and reduce, and the gases in the crankshaft room 10 just enter or discharge along slit 31 between throttling sheet 3 and the shell 13 and the slit 32 between throttling sheet 3 and the cylinder 16.This little slit can stop crankshaft room's 10 in-lubricants to pass through, thereby can make crankshaft room's 10 in-lubricant long-term existence, and plays a role.

In sum, electric hammer in the utility model is after increasing throttling sheet 3, former crankshaft room that is interconnected and cylinder spin chamber are isolated, be located at sealing ring 2 between crankshaft room 10 and the reduction gearing chamber 11 and improved sealing between crankshaft room 10 and the reduction gearing chamber 11 simultaneously, form the crankshaft room space of sealing, stop of the loss of crankshaft room's 10 in-lubricants thereby reach, do not influence the normal operation of vapour pressure mechanism simultaneously to spaces such as cylinder spin chamber 14, reduction gearing chambers 11.

Electric hammer in the utility model has simple and reasonable for structure, effective characteristics, and can improve electric hammer Serviceability prolongs electric hammer service life.

Claims

1, a kind of increase has the electric hammer of interrupter, mainly include motor, reduction gear, gas pressure mechanism, slew gear, hammer mechanism, main handle, auxilliary handle, start button and shell, and in described shell, be formed with successively the reduction gearing chamber that is communicated with between each parts, crankshaft room and revolution cylinder chamber, it is characterized in that, between described crankshaft room and described cylinder spin chamber, be provided with the throttling sheet that is used to isolate described crankshaft room and cylinder spin chamber, and all leave at the outer surface of described throttling sheet and inner surface gas is passed through and the intransitable slit of lubricant, and between described crankshaft room and described reduction gearing chamber, be provided with the sealing ring that is used to isolate described crankshaft room and described reduction gearing chamber.

2, increase according to claim 1 has the electric hammer of interrupter, it is characterized in that, the material of described sealing ring is a rubber.

3, increase according to claim 2 has the electric hammer of interrupter, it is characterized in that, described sealing ring is set in outside the bent axle in the described reduction gear, in the gap that forms between described bent axle and described shell.

4, increase according to claim 3 has the electric hammer of interrupter, it is characterized in that, described sealing ring include the interior ring that contacts with described bent axle outer wall, and with the outer shroud of described housing contacts, encircle in described to be connected in the bottom and take the shape of the letter U with described outer shroud.

5, increase according to claim 1 has the electric hammer of interrupter, it is characterized in that, described throttling sheet is enclosed within the gap that forms between the outer wall of cylinder in the described gas pressure mechanism and the shell, and is positioned at an end of the bearing that is arranged on this gap.