CN201685237U

CN201685237U - Electric tool

Info

Publication number: CN201685237U
Application number: CN2010202122157U
Authority: CN
Inventors: 高红松
Original assignee: NANJING BAIWEI HARDWARE TOOLS CO Ltd
Current assignee: NANJING BAIWEI HARDWARE TOOLS CO Ltd
Priority date: 2010-06-02
Filing date: 2010-06-02
Publication date: 2010-12-29
Anticipated expiration: 2020-06-02

Abstract

The utility model relates to an electric tool comprising a motor, an oscillation generating device driven by the motor, a driving shaft driven by the oscillation generating device, and a tool head arranged on the driving shaft and swinging in a working surface, and further comprising a first case and a second case, wherein the first case can be held, and the second case contains the motor, the oscillation generating device and a part of the driving shaft; the first case and the second case are coaxially butted; a first elastic shock-absorbing device is connected between the first case and the second case. As the shock is mainly generated in the second case, the mutually-separated structure leads the shock not to be directly and wholly transferred onto the first shell for being held; and the first elastic shock-absorbing device plays a good damping role to the shock, thus improving the comfort level of holding.

Description

Electric tool

Technical field

The utility model relates to a kind of electric tool, comprises a motor, and one by motor-driven oscillation generator, a driving shaft that drives by oscillation generator, and be loaded on the tool heads of in a working face, swinging on the driving shaft.

Background technology

Tool heads does that thereby vibration swing is used to grind or the electric tool of purpose such as cutting by known and use for many years.For example, publication number is that the Chinese utility model patent of CN101497191A, CN101043987A and Chinese utility model patent that notification number is CN201353759Y have all disclosed this instrument.This type of instrument has a common very large shortcoming: produce very large vibrations in the operation engineering, bring big uncomfortable to the operator.

The utility model content

At the deficiency that prior art exists, the purpose of this utility model is the vibrations that weaken in this electric tool course of work.

To achieve these goals, the technical scheme that the utility model adopted is: a kind of electric tool, comprise a motor, one by motor-driven oscillation generator, a driving shaft that drives by oscillation generator, and be loaded on the tool heads of in a working face, swinging on the driving shaft, comprising can be for first casing that grips and second casing that holds the part of motor, oscillation generator and driving shaft, first casing and second casing are coaxial docking, and first elastic shock-absorbing device is connected between first casing and second casing.

Advantage of the present utility model is, because vibrations mainly result from second casing, the structure that is separated from each other can not be delivered to directly, fully on first casing that grips, in addition vibrations, first elastic shock-absorbing device has played good cushioning effect to vibrations, has improved the gripping comfort level.

Connection between first casing and second casing can be mutual grafting, and has the part of mutual covering, has a gap between the part of described mutual covering, and first elastic shock-absorbing device is filled described gap.

As a supplement, first casing is roughly parallel to described working face.

As further replenishing, described oscillation generator comprises one by motor-driven eccentric part be subjected to eccentric part to drive the shift fork of doing the vibration swing, and the described shift fork other end is fixedlyed connected with driving shaft, thereby the driven tool head moves.

In order further to improve damping effect, can outside first casing, establish second elastic shock-absorbing device at least in part, first elastic shock-absorbing device and second elastic shock-absorbing device are structure as a whole.Second elastic shock-absorbing device has further improved the gripping comfort level, simultaneously because first elastic shock-absorbing device and second elastic shock-absorbing device be structure as a whole, with respect to the split designs simplification production procedure.

As further improvement, the battery packages that power supply is provided to motor is on first casing, be connected by the 3rd damping device between power brick and first casing, first elastic shock-absorbing device, second elastic shock-absorbing device and the 3rd elastic shock-absorbing device are structure as a whole.Before the 3rd damping device is set, owing to more or less have the fit-up gap, be subjected to the influence of the vibrations of first casing between the power brick and first casing, power brick shakes with respect to first casing, so strengthened the vibrations of first casing.After the 3rd damping device was set, the vibrations between the power brick and first casing weakened.In addition because first elastic shock-absorbing device, second elastic shock-absorbing device and the 3rd elastic shock-absorbing device be structure as a whole, with respect to the split designs simplification production procedure.

Preferably, described first elastic shock-absorbing device, second elastic shock-absorbing device and the 3rd elastic shock-absorbing device are made by elastic caoutchouc.

Description of drawings

Fig. 1 is the stereogram of electric tool of the present utility model;

Fig. 2 is the partial sectional view of the electric tool of first kind of embodiment of the utility model;

Fig. 3 is the partial sectional view of the electric tool of second kind of embodiment of the utility model;

Fig. 4 A is the stereogram of the electric tool of the third embodiment of the utility model;

Fig. 4 B is the profile along A-A direction among Fig. 4 A;

Fig. 5 is the partial sectional view of the electric tool of the 4th kind of embodiment of the utility model;

Fig. 6 is the partial sectional view of the electric tool of the 5th kind of embodiment of the utility model.

The specific embodiment

The specific embodiment one:

As shown in Figures 1 and 2, electric tool 100 comprises 2, one 4, one driving shafts 6 that driven by oscillation generator 4 of oscillation generator that driven by motor 2 of a motor, and the tool heads 10 that is loaded on the swing in a working face 8 on the driving shaft 6.Wherein oscillation generator 4 comprise one driven by motor 2 to rotate eccentric part 12 and be subjected to eccentric part 12 to drive the shift fork 14 of doing the vibration swing.One end 14a of shift fork 14 is connected with eccentric part 12, and other end 14b is fixedlyed connected with driving shaft 6, so the vibration of shift fork 14 swing drives tool heads 10 motions.

Electric tool 100 has one can be for first casing 20 that grips and second casing 22 that is attached thereto.Motor 2, oscillation generator 4 and driving shaft 6 are contained in second casing 22.First casing 20 is plugged in second casing 22, and has part 20a, the 22a of mutual covering.Between the part 20a, the 22a that cover mutually, has a gap 24.As alternative, in other embodiments, second casing 22 also can be plugged in first casing 20.Preferably, first elastic shock-absorbing device 26 is connected between first casing 20 and second casing 22, fills the part 20a, the gap between the 22a 24 that cover mutually.Wherein, first elastic shock-absorbing device 26 is made by rubber, can take shape on first casing 20 or second casing 22 by Shooting Technique.In addition, first casing 20 and the roughly coaxial vertical distribution of second casing 22, first casing 20 is roughly parallel to working face 8.

The specific embodiment two:

As shown in Figure 3, electric tool 101 comprises first casing 201 and second casing 221 that is attached thereto that can supply gripping.The connected mode of first casing 201 and second casing 221 and inner setting are roughly the same with the specific embodiment one.In the present embodiment, outer second elastic shock-absorbing devices 28 that are provided with at least in part of first casing 201, concrete as elastic caoutchouc.Preferably, second elastic shock-absorbing device 28 and first elastic shock-absorbing device 26 are structure as a whole.Particularly, second elastic shock-absorbing device 28 and first elastic shock-absorbing device 26 be formed on first casing 201 by rubber by Shooting Technique and first casing 201 and second casing 221 between.

The specific embodiment three:

Shown in Fig. 4 A and Fig. 4 B, electric tool 102 comprises a casing 21, and casing 21 inner settings are roughly the same with the specific embodiment one.One provides the power brick 28 of power supply removably to be loaded on the casing 21 to motor.Be provided with the 3rd elastic vibration clamper 30 between the shell 29 of casing 21 and power brick 28.

Except the mode that this specific embodiment is described and shown, also be the as a whole mode of casing 21, also damping device can be set between first casing 20,201 in the above-mentioned specific embodiment one and the specific embodiment two and the power brick.

The 3rd elastic shock-absorbing device 30 is made by rubber, can take shape on the shell 29 of casing 21 or power brick 28 by Shooting Technique.

The specific embodiment four:

As shown in Figure 5, electric tool 103 comprises first casing 202 and second casing 222 that is attached thereto that can supply gripping.The connected mode of first casing 202 and second casing 222 and inner setting are roughly the same with the specific embodiment two.One provides the power brick 32 of power supply to be plugged on first casing 202 to motor.Be connected by the 4th damping device 34 between power brick 32 and first casing 202, first elastic shock-absorbing device 26, second elastic shock-absorbing device 28 and the 4th elastic shock-absorbing device 34 are structure as a whole, and are made by elastic caoutchouc.

The specific embodiment five:

As shown in Figure 6, electric tool 104 comprises first casing 203 and second casing 223 that is attached thereto that can supply gripping.First casing 203 and the 223 coaxial parallel settings of second casing, first elastic shock-absorbing device, 26 two ends are connected with second casing 223 with first casing 203 respectively.One hard is connected part 36 and is covered on first elastic shock-absorbing device 26, and fixedly connected with it.In this specific embodiment, first elastic shock-absorbing device 26 has played the effect that is connected first casing 203 and second casing 223 jointly with linking part 36, and first elastic shock-absorbing device, 26 while available buffer second casing 223 is with respect to the vibrations of first casing 203.The inside of first casing 203 and second casing 223 is provided with the specific embodiment one roughly the same.

The utility model is not limited to the above embodiment, and those of ordinary skills rely on other similar techniques schemes that understanding of the present utility model is expected easily all in protection domain of the present utility model.First, second, third, fourth word of being mentioned in the utility model specific embodiment such as grade only is used to distinguish each corresponding device thereof, is not that each is installed determinate appellation.

Claims

1. electric tool, comprise a motor, one by motor-driven oscillation generator, a driving shaft that drives by oscillation generator, and be loaded on the tool heads of in a working face, swinging on the driving shaft, it is characterized in that: comprising can be for first casing that grips and second casing that holds the part of motor, oscillation generator and driving shaft, and first casing and second casing are coaxial docking, and first elastic shock-absorbing device is connected between first casing and second casing.

2. electric tool according to claim 1 is characterized in that: first casing and second casing are pegged graft mutually, and have the part of mutual covering, have a gap between the part of described mutual covering, and first elastic shock-absorbing device is filled described gap.

3. electric tool according to claim 1 is characterized in that: a hard is connected part and is connected with first elastic shock-absorbing device.

4. electric tool according to claim 1 is characterized in that: first casing is roughly parallel to described working face.

5. electric tool according to claim 1, it is characterized in that: described oscillation generator comprises one by motor-driven eccentric part with driven by eccentric part to do the shift fork of vibration swing, the described shift fork other end is fixedlyed connected with driving shaft, thus the motion of driven tool head.

6. according to the wherein arbitrary described electric tool of claim 1 to 5, it is characterized in that: first casing is provided with second elastic shock-absorbing device outward at least in part, and first elastic shock-absorbing device and second elastic shock-absorbing device are structure as a whole.

7. electric tool according to claim 6, it is characterized in that: the battery packages that power supply is provided to motor is on first casing, be connected by the 3rd damping device between power brick and first casing, first elastic shock-absorbing device, second elastic shock-absorbing device and the 3rd elastic shock-absorbing device are structure as a whole.

8. electric tool according to claim 7 is characterized in that: described first elastic shock-absorbing device, second elastic shock-absorbing device and the 3rd elastic shock-absorbing device are made by elastic caoutchouc.