CN207326902U - Swing-type power tool - Google Patents

Abstract

A kind of swing-type power tool is the utility model is related to, including housing, motor, output shaft and transmission mechanism, motor are contained in housing；Output shaft is used for installation head；Transmission mechanism is arranged between motor and output shaft, for the rotary motion of motor to be converted to oscillating motion of the output shaft around own axes；Swing-type power tool further includes damping body, housing includes the first housing and the second housing, and the second housing is at least partly enclosed arranged on motor, and the first housing is arranged at intervals along the radial direction of motor with the second housing, damping body is arranged on the first housing, and is at least partially disposed between the first housing and the second housing.Damping body is arranged at the first housing, and it is at least partially disposed between the first housing and the second housing, it is possible to prevente effectively from the vibration that output shaft movement produces is transferred on grip part, reduce the vibration of grip part, greatly improve the vibration fiber crops hand problem of user in use, improve the comfort of operation.

Description

Swing-type power tool

Technical field

It the utility model is related to power tool technical field, more particularly to a kind of swing-type power tool.

Background technology

Power tool, such as swing-type power tool, its output shaft makees rotational oscillating motion around axial line, when in output shaft It is provided with after different annex work heads, it can be achieved that a variety of different operations, such as saw, cut, grind, scrape, to adapt to different works Make demand.

Usually, the relatively conventional swing-type power tool of in the market, including housing, the motor that is contained in housing, motor Axis connection has eccentric part, and bearing is arranged with eccentric part, so as to form offset assembly.When motor drive shaft rotates, offset assembly The axial line that motor drive shaft can be surrounded makees eccentric motion.In general, the output shaft of swing-type power tool is mutually perpendicular to set with motor drive shaft Put, transmission mechanism is additionally provided between motor drive shaft and swing-type power tool, to export oscillating motion.But operator usually directly holds Hold on housing, in the swing-type power tool course of work, inevitably produce larger vibration, vibration passes through housing transmission To operator, the comfort of swing-type power tool operation have impact on.

Utility model content

Based on this, it is necessary to for the problem that traditional swing-type power tool has larger vibration, influence operation comfort, carry For a kind of swing-type power tool simple in structure, that operation comfort can be improved.

A kind of swing-type power tool, including：

Housing；

Motor, is contained in the housing；

Output shaft, for installation head；

Transmission mechanism, it is described for the rotary motion of motor to be converted between the motor and the output shaft Output shaft surrounds the oscillating motion of own axes；

It is characterized in that, the swing-type power tool further includes damping body, the housing includes the first housing and second shell Body, second housing are at least partly enclosed arranged on the motor, radial direction and described second of first housing along the motor Housing is arranged at intervals, and has gap between first housing and second housing, the damping body is arranged at described first Housing is backwards to the side of second housing, and between being at least partially disposed between first housing and second housing Gap, and engaged with second housing.

Above-mentioned swing-type power tool, damping body are arranged at the first housing backwards to the side of the second housing, and at least partly Gap between the first housing and the second housing, and engaged with the second housing, it is possible to prevente effectively from output shaft movement produces Vibration be transferred on grip part, reduce the vibration of grip part, greatly improve user's vibration fiber crops hand in use and ask Topic, improves the comfort of operation.

In a wherein embodiment, the damping body fails between filling up between first housing and second housing Gap.

In a wherein embodiment, the damping body include enclosing the portion of covering, junction surface and be connected to it is described enclose the portion of covering with it is described Connecting portion between junction surface, the portion of covering that encloses circumferentially are held in first housing backwards to described second along first housing The side of housing, the connecting portion are arranged in first housing, and the junction surface is engaged in second housing.

In a wherein embodiment, first housing is equipped with grip part backwards to the side of second housing, described to subtract Vibration body at least partly covers the grip part.

In a wherein embodiment, the damping body is shaped in first housing.

In a wherein embodiment, first housing has cross one another two parts with second housing, described Damping body is arranged between first housing and the cross one another part of the second housing.

In a wherein embodiment, first housing includes body and the supporting part for being connected to the body side, institute To state supporting part and stretch into the gap between second housing and the motor, the damping body is arranged at the supporting part, And between the supporting part and second housing.

In a wherein embodiment, the supporting part includes extension and limiting section, and the extension is along the motor Radially extend, the limiting section extends along the axis direction of the motor, and the damping body is arranged at the limiting section, and is located at Between the limiting section and second housing.

In a wherein embodiment, second housing has towards the first side of first housing, first side Connection unit is equipped with, the connection unit wears first housing, and the damping body is arranged at first housing, and position Between the connection unit and first housing.

In a wherein embodiment, the connection unit includes connector, which includes bar portion and be connected to described The head of bar portion, the one end of the rod are fixedly connected on second housing, and the other end is arranged in first housing, described to subtract Vibration body is arranged between the head and first housing.

Brief description of the drawings

Fig. 1 is the partial structural diagram of the swing-type power tool in the utility model first embodiment；

Fig. 2 is the partial structural diagram at the A of the swing-type power tool shown in Fig. 1；

Fig. 3 is the structure diagram of the swing-type power tool in the utility model second embodiment；

Fig. 4 is the structure diagram of the swing-type power tool in the utility model 3rd embodiment.

Embodiment

For the ease of understanding the utility model, the utility model is more fully retouched below with reference to relevant drawings State.The preferred embodiment of the utility model is given in attached drawing.But the utility model can come in many different forms Realize, however it is not limited to embodiment described herein.On the contrary, the purpose for providing these embodiments makes to the utility model The understanding of disclosure more thorough and comprehensive.

It should be noted that when element is referred to as " being fixed on " another element, it can be directly on another element Or there may also be element placed in the middle.When an element is considered as " connection " another element, it can be directly connected to To another element or it may be simultaneously present centering elements.Term as used herein " vertical ", " horizontal ", " left side ", " right side " and similar statement are for illustrative purposes only.

Unless otherwise defined, all of technologies and scientific terms used here by the article is led with belonging to the technology of the utility model The normally understood implication of technical staff in domain is identical.It is simply in the term used in the description of the utility model herein The purpose of description specific embodiment, it is not intended that in limitation the utility model.Term as used herein " and/or " include The arbitrary and all combination of one or more relevant Listed Items.

Fig. 1 shows the structure diagram of the swing-type power tool 10 in the utility model first embodiment.

As shown in Figure 1, the swing-type power tool 10 in the utility model first embodiment, including it is housing 12, motor 14, defeated Shaft (not shown), transmission mechanism (not shown) and damping body 16.

In the present embodiment, which is at least partially housed in housing 12, and the free end of the output shaft is equipped with fixing piece, Work head is fixed on output shaft.Motor 14 has motor drive shaft 142, and the axis of motor drive shaft 142 is approximately perpendicular to output shaft Axis, which is eccentric drive mechanism, by transmission mechanism, the rotary motion of motor 14 is converted to output shaft and is enclosed Around the oscillating traverse motion of own axes.After fixing piece fixes different work heads, such as straight blade, saw blade, triangle frosted Disk etc., you can realize the work such as cutting or grinding.

Since transmission mechanism driving work head swing angle is big, larger vibration is inevitably produced, and this is shaken It is dynamic operator to be transferred to by the grip part on housing 12, since work head is that the swing made around the axis of output shaft is transported It is dynamic, then vibrated in the in-plane formed perpendicular to 142 axis of motor drive shaft and output shaft axis it is maximum, can give operator with Carry out many hidden danger, therefore, it is necessary to reduce the vibration of grip part.

Please continue to refer to Fig. 1, which includes the first housing 122 and the second housing 124, the second housing 124 at least portion Divide to enclose and be arranged at intervals arranged on motor 14, the first housing 122 along the radial direction of motor 14 with the second housing 124.In the present embodiment, first Housing 122 is arranged at the outside of the second housing 124, certainly, in some other embodiment, the second housing 124 may also set up in The outside of first housing 122.First housing 122 is referred to as shell, and the second housing 124 is referred to as inner casing, the first housing 122 and the There is gap 121 between two housings 124, vibration can be avoided directly to be transmitted from the second housing 124 and put the first housing 122.Preferably, Gap 121 between first housing 122 and the second housing 124 is more than 0.5 millimeter and is less than 4 millimeters, it is highly preferred that the first housing 122 and the second gap 121 between housing 124 be more than 0.5 millimeter and be less than 2 millimeters.

Grip part (figure is not marked) is provided with first housing 122, grip part includes the first housing 122 backwards to the second housing 124 at least part profile, operator operate swing-type power tool 10 by gripping the exterior contour of the first housing 122, hold It is convenient and firm to hold.It should be appreciated that in some other embodiment, also extra gripping can be installed on the first housing 12 Handle.By setting double Shell 12, the vibration of motor 14 is transferred on the first housing 122 again by the second housing 12, is passed through Barrier vibration decay, can reduce the vibration for being transferred to grip part on the first housing 122.

But to realize preferable work efficiency, the swing angle of increase output shaft is generally required, but improve in work efficiency While, the vibration of swing-type power tool 10 necessarily increases.Swing-type power tool 10 in the present embodiment is in double Shell 12 On the basis of, then damping body 16 is set between the first housing 122 and the second housing 124, to reduce vibration, improve power tool The comfort of operation and take into account raising work efficiency.

Wherein, which is arranged on the first housing 122, and be at least partially disposed at the first housing 122 and the second housing 124 it Between.

In the present embodiment, there is gap between the first housing 122 and the second housing 124, damping body is arranged at the first housing 122 backwards to the side of the second housing, and extends partially into the gap between the first housing 122 and the second housing 124, and with second Housing 124 engages.Wherein, which includes two half-shells, and the two and half of the second housing 124 Shell, which encloses, to be set to form a receiving space, and the agent structure of motor 14 is contained in the receiving space.

In this way, damping body is arranged at the first housing 122 backwards to 124 side of the second housing, and part extends first shell Gap 121 between body 122 and the second housing 124 is engaged with the second housing 124, simple in structure compared to the special cushion blocking of setting, And on the premise of ensureing not increasing the grip part size of housing 12, effectiveness in vibration suppression is played, improve operatively comfort.

Further, which fails to fill up the gap between the first housing 122 and the second housing 124.In this way, can Surplus is left for the deformation of damping body 16, effectiveness in vibration suppression is further improved, improves operation comfort.In a better embodiment In, which includes enclosing the portion of covering 162, junction surface 164 and is connected to the connecting portion enclosed between the portion of covering 162 and junction surface 164 166, this encloses the portion of covering 162 and is covered along the first housing 122 is circumferential in the first housing 122 backwards to the side of the second housing 124, this first Housing 122 offers the through hole extended radially through along motor shaft, which is arranged in the through hole, prolongs towards the second housing 124 Stretch, which is engaged in the second housing 124.

In the present embodiment, which is made of elastic material, for example, polyurethane, rubber etc., the damping body is using note Mould molding mode and be shaped in the first housing 122.The portion of covering 162 is enclosed to coat along the external circumferential of the first housing 122, and at least Part coats foregoing grip part, and the through hole of the connecting portion 166 from the first housing 122 extends radially into first shell along motor 14 Gap 121 between 122 and second housing 124 of body, junction surface 164 along motor 14 axis direction extend, and with the second housing 124 engagements.In this way, the bonding strength of 122 body 12 of the damping body and the first housing can be increased.

Further, also referring to Fig. 2, the junction surface 164 is towards one end of the second housing 124 formed with concave part (figure is not marked), which corresponds to the junction surface 164 and is convexly equipped with lug boss 126, the lug boss 126 and the concave part phase Engagement.Specifically, which has the composition surface 1642 for being roughly parallel to 142 axis of motor drive shaft as its inner wall and connection In the circumferential confined planes 1644 in composition surface 1642, which is obliquely installed at an angle with respect to composition surface 1642, should The outline shape of lug boss 126 matches with the concave part, so, it is possible to increase the contact area of lug boss 126 and concave part, and Where 142 axis of motor drive shaft on the extension direction of plane, and motor 14 plays the fixed effect with vibration damping in the radial direction, It further increasing effectiveness in vibration suppression.In the present embodiment, the cross sectional shape of the concave part is trapezoidal, and the lug boss 126 wedging should In concave part.

It should be appreciated that in the present embodiment, the end set at the junction surface 164 has concave part, with the second housing 124 Engagement, in this way, can reduce the vibration in 1642 direction of composition surface, can also reduce the circumferential vibration in composition surface 1642.Some other In embodiment, those skilled in the art are further envisioned that junction surface 164 is coupled with the second housing 124 with other shapes, for example, Plane, which abuts, also may be used.

Further, which includes multiple, and multiple junction surfaces 164 are engaged with the second housing 124, reduction the Vibration between one housing 122 and the second housing 124.Wherein, junction surface 164 is arranged in pairs, and the center of opposite motor 14 is in Central symmetry, in this way, ensureing the first housing 122 and the second housing 124 along 142 line direction of motor drive shaft and the circumferential direction vibration damping of motor 14 Uniformity, further improves the comfort of operation.

It is not such as conventional imagination, junction surface it may be noted that it has been found that although damping body can reduce vibration The 164 more effectiveness in vibration suppression of quantity are better, when the quantity at junction surface 164 exceedes certain value, cost improve and effectiveness in vibration suppression on the contrary Decline.Junction surface 164 in the present embodiment is preferably 2~5, in embodiment more preferably as shown in Figure 1, the junction surface 164 For 4.

Fig. 3 shows the swing-type power tool 20 in the utility model second embodiment, it has phase with first embodiment As structure, difference will illustrate specifically below, and for ease of description, identical element numbers do not change.Such as Fig. 3 institutes Show, the swing-type power tool 20 in the utility model second embodiment, it is different from swing-type power tool in first embodiment 10 Part is that the concrete structure of damping body 16 is different, and the position set is different.

Wherein, which includes body 225 and the supporting part 226 for being connected to 225 side of body, the supporting part 226 stretch into the gap 226 between the second housing 224 and motor 14, and damping body 16 is arranged at supporting part 226 and second housing Between 224.Specifically, which includes extension 221 and limiting section 223, the radial direction of the extension 221 along motor 14 Extension, the limiting section 223 extend along the axis direction of motor 14.

In the present embodiment, the supporting part 226 is L-shaped, has gap 226 between second housing 224 and motor 14, should Supporting part 226 stretches into the second housing 224, which includes damping body, is in particular damping ring, it is socketed on limiting section 223 and second between housing 224, so as to make full use of the space between the second housing 224 and motor 14, is improving damping property On the premise of, and the size of swing-type power tool 20 will not be increased.It is appreciated that those skilled in the art are also contemplated that the supporting Portion 226 is " T " shape, namely limiting section 223 extends along 142 line direction of motor drive shaft or so, and accordingly, which is two, point Limiting section 223 is not socketed on.

In the present embodiment, which is four, which is two, and certainly, those skilled in the art can also think Arrive, the quantity of damping body can be set according to demand, it is not limited to 2 shown in specific embodiment.

It should be noted that when supporting part 226 is arranged at the gap 226 between the second housing 224 and motor 14, supporting Portion 226 can be regarded as a part for the first housing 222, that is to say, that the part equivalent to the first housing 222 extend into second In gap 226 between housing 224 and motor 14.First housing 222 intersects with the second housing 224, and damping body is arranged at intersection The first housing 222 and the second housing 224 between.Therefore, in the utility model, " the first housing 222 and the second housing 224 it Between ", it can be understood as being not required for the first housing 222 and the second housing 224 has specific cladding relation, such as requires, second Housing 224 is coated in the first housing 222 completely.As long as and it is respectively arranged with the first housing 222 and the second housing 224 opposite Part I and Part II, damping body 16 is arranged between Part I and Part II.

Further say, in the present embodiment, supporting part 226 can be understood as foregoing Part I, and damping body is set Between Part I and the second housing 224, that is, it is also to meet foregoing requirement.

It is emphasized that " damping body 16 is arranged at the first housing 222 backwards to the side of the second housing 224, and at least portion Divide the gap between the first housing 222 and the second housing 224 ".In the present embodiment, the first housing 222 court on the whole To the second housing 224, and on the outside of the second housing 224, and the part that supporting part 226 is the first housing 222, damping body 16 Positioned at the inner side of the second housing 224, it should also be interpreted as the first housing 222 backwards to the side of the second housing 224.Therefore, this reality Apply in example, be not construed as, damping body 16 is arranged at the outside of the first housing 222 on the whole, the i.e. outside of body 225.

Fig. 4 shows the swing-type power tool 30 in the utility model 3rd embodiment, it has phase with first embodiment As structure, difference will illustrate specifically below, and for ease of description, identical element numbers do not change.Such as Fig. 4 institutes Show, the swing-type power tool 30 in the utility model 3rd embodiment, it is different from swing-type power tool in first embodiment 10 Part is that the concrete structure of damping body 16 is different, and the position set is different.

Wherein, which has the first side towards the first housing 322, and the first side is equipped with connection unit 326, connection unit 326 wears the first housing 322, and damping body 16 is arranged between 326 and first housing 322 of connection unit.Tool Body, which includes connector, which includes bar portion and be connected to the head of bar portion, and one end of the rod is fixed Be connected to the second housing 324, the other end is arranged in the first housing 322, damping body 16 be arranged at head and the first housing 322 it Between.

In the present embodiment, which is bolt, and connector is threadedly connected to the second housing 324, and damping body 16 includes subtracting Vibration body, the damping body are specially damping ring, it is arranged between the head of connector and the first housing 322.Damping body can elasticity Frictional force of the deformation to be produced to antidamping, so as to reduce the vibration that the second housing 324 is transferred to the first housing 322, in other words Say, damping body is also a kind of power transmission part.

Further, to reduce the contact area of the first housing 322 and the second housing 324, reduce to vibrate and transmit, and need It will vibrate mainly by damping body transmission, and so that vibration be decayed in transmittance process, realize the purpose for improving operation comfort.Tool Body, which is equipped with supporting part 323 backwards to the side of motor 14, which is convexly equipped in the second housing 324 Backwards to a side surface of motor 14, which offers threaded hole, and the inner side of first housing 322 is held in the supporting Portion 226, and the threaded hole is threadedly connected to by foregoing connector, so that the first housing 322 be connected with the second housing 324 It is integrated.

Wherein, which has the support division 329 for the formation that is recessed inwardly, the support division 329 and foregoing branch Support part 323 abuts against, and formed with a receiving space, connector is contained in the receiving space.In this way, moved not changing to swing On the premise of 30 size of power instrument, connector is set there are enough spaces to set.

It should be appreciated that the area contacted with the second housing 324 due to the setting of supporting part 323, first housing 322 Only include the area that supporting part 323 is contacted with the first housing 322, and make the first housing 322 and the second housing 324 backwards to motor 14 A side surface between formed gap 328.In this way, 12 structure of double Shell being also similarly in first embodiment, realization are shaken Dynamic decay.

It should be noted that when connector is arranged at the first housing 322 and the second housing 324, connector can be regarded as A part for first housing 322 or the second housing 324, specific in the present embodiment, the part equivalent to the second housing 324 is stretched Enter to the first housing 322.First housing 322 intersects with the second housing 324, damping body be arranged at the first housing 322 of intersection with Between second housing 324.Equally, damping body is fallen within to be arranged between the first housing 322 and the second housing 324.

Each technical characteristic of embodiment described above can be combined arbitrarily, to make description succinct, not to above-mentioned reality Apply all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited In contradiction, the scope that this specification is recorded all is considered to be.

Embodiment described above only expresses the several embodiments of the utility model, its description is more specific and detailed, But therefore it can not be interpreted as the limitation to utility model patent scope.It should be pointed out that the common skill for this area For art personnel, without departing from the concept of the premise utility, various modifications and improvements can be made, these are belonged to The scope of protection of the utility model.Therefore, the protection domain of the utility model patent should be determined by the appended claims.

Claims (10)

1. a kind of swing-type power tool, including：

Housing；

Motor, is contained in the housing；

Output shaft, for installation head；

Transmission mechanism, between the motor and the output shaft, for the rotary motion of motor to be converted to the output Axis surrounds the oscillating motion of own axes；

It is characterized in that, the swing-type power tool further includes damping body, the housing includes the first housing and the second housing, institute State the second housing at least partly to enclose arranged on the motor, first housing is along between the radial direction of the motor and second housing There is gap between setting, first housing and second housing, the damping body is arranged at the first housing back of the body To the side of second housing, and the gap being at least partially disposed between first housing and second housing, and with The second housing engagement.

2. swing-type power tool according to claim 1, it is characterised in that the damping body fails to fill up the first shell Gap between body and second housing.

3. swing-type power tool according to claim 2, it is characterised in that the damping body includes enclosing the portion of covering, junction surface And the connecting portion enclosed between the portion of covering and the junction surface is connected to, the portion of covering that encloses circumferentially is held in along first housing For first housing backwards to the side of second housing, the connecting portion is arranged in first housing, and the junction surface connects Together in second housing.

4. swing-type power tool according to claim 2, it is characterised in that first housing is backwards to second housing Side be equipped with grip part, the damping body at least partly covers the grip part.

5. according to the swing-type power tool described in claim 2~4 any one, it is characterised in that damping body one into Type is in first housing.

6. swing-type power tool according to claim 1, it is characterised in that first housing has with second housing Have cross one another two parts, the damping body be arranged at first housing and the cross one another part of the second housing it Between.

7. swing-type power tool according to claim 6, it is characterised in that first housing includes body and is connected to The supporting part of the body side, the supporting part stretch into the gap between second housing and the motor, the vibration damping Body is arranged at the supporting part, and between the supporting part and second housing.

8. swing-type power tool according to claim 7, it is characterised in that the supporting part includes extension and spacing Portion, the extension are radially extended along the motor, and the limiting section extends along the axis direction of the motor, the vibration damping Body is arranged at the limiting section, and between the limiting section and second housing.

9. swing-type power tool according to claim 6, it is characterised in that second housing has towards described first First side of housing, first side are equipped with connection unit, and the connection unit wears first housing, the damping body First housing is arranged at, and between the connection unit and first housing.

10. swing-type power tool according to claim 9, it is characterised in that the connection unit includes connector, the company Fitting includes bar portion and is connected to the head of the bar portion, and the one end of the rod is fixedly connected on second housing, the other end First housing is arranged in, the damping body is arranged between the head and first housing.