CN206335471U - Sander - Google Patents

Abstract

The utility model provides a kind of sander, including：Fuselage；Pin is swung, the swing pin has axis；And bottom deck assembly；When the drive component driving bottom deck assembly motion and the swing pin limit the bottom deck assembly motion, the angle of the axis line skew for swinging pin is the deflection angle for swinging pin, the displacement for swinging one end skew of the pin away from the fuselage is the offset for swinging pin, and the offset is not more than the tangent value of the predetermined angle scope of the deflection angle with the ratio of the length of the swing pin.Increased by swinging the length of pin with the increase of offset to ensure the angular range of deflection angle, to reduce the angle of deflection angle, it is effective to solve because swinging the problem of swung caused by the deflection angle of pin causes greatly swing pin bending stress to be difficult to discharge pin easy fatigue fracture, improve the reliability for swinging pin, avoid swinging human hair combing waste life fatigue fracture phenomenon, it is ensured that the reliability of sander work.

Description

Sander

Technical field

The utility model is related to sanding power tool equipment technical field, more particularly to a kind of sander.

Background technology

For current Flat plate type sander, the swing pin of sander is easily influenceed by sander complete machine structure, pendulum The length of dynamic pin is generally shorter, is generally added moreover, swinging pin by the rubber column with rigid insert, gum post or rubber ring Rigid post is connected with base plate.But, when swing pin is connected by said structure with base plate, swing pin its pivot angle in large eccentricity amount Angle is bigger, then causes bending angle bigger than normal, moreover, swing pin operationally can high frequency swing, and the swing of high frequency The bending stress of swing pin can be made to be difficult release, cause swing pin easily to occur fatigue fracture, the reliability of influence sander work Property.

Utility model content

Based on this, it is necessary to for being led at present because the deflection angle of swing pin causes greatly swing pin bending stress to be difficult release The problem of swing pin of cause easy fatigue fracture, can effectively reduce deflection angle there is provided one kind, avoid swinging human hair combing waste life fatigue disconnected The sander split.

Above-mentioned purpose is achieved through the following technical solutions：

A kind of sander, including：

Drive component is provided with fuselage, the fuselage；

Pin is swung, one end of the swing pin is connected with the fuselage, the swing pin has axis；And

Bottom deck assembly, is connected with the other end of the swing pin；The bottom deck assembly is also connected with the drive component, institute State drive component and drive the bottom deck assembly motion, and pass through the range of movement of the swing pin limitation bottom deck assembly；

When the drive component driving bottom deck assembly motion and the swing pin limit the bottom deck assembly motion, institute Deflection angle of the angle for the axis line skew for swinging pin for the swing pin is stated, the described one end of swing pin away from the fuselage is inclined The displacement of shifting is the offset of the swing pin, and the offset and the ratio of the length of the swing pin are not more than the beat The tangent value of the predetermined angle scope at angle.

In wherein one embodiment, the predetermined angle scope of the deflection angle is less than or equal to 2.5 °.

In wherein one embodiment, the predetermined angle scope of the deflection angle is 1.5 °~2.5 °.

In wherein one embodiment, when the offset is more than 1mm, the length of the swing pin is less than or equal to sander The 1/2 of whole machine height.

In wherein one embodiment, when the offset is more than 1mm, the length of the swing pin is more than or equal to 23mm.

In wherein one embodiment, the bottom deck assembly includes working plate and the bottom being arranged on the working plate Board shaft is held, and the drive component is connected to drive the working plate to move with the base plate bearing.

In wherein one embodiment, the size range of the race diameter of the base plate bearing is 35mm~52mm.

In wherein one embodiment, the sander also includes connector, the connector connection swing pin with The bottom deck assembly, is moved so that the swing pin limits the bottom deck assembly by the connector.

The beneficial effects of the utility model are：

Sander of the present utility model, structure design advantages of simple when swinging the offset increase of pin, is swung by increasing The length of pin, so that swinging pin can be limited in default scope, it is effective to reduce the deflection angle for swinging pin, so can Reduce the bending angle for swinging pin, it is to avoid pin bending stress is swung caused by swinging the swing in high frequency of pin and is difficult asking for release Topic, and then avoid swing pin from the phenomenon of fatigue fracture occur, the reliability for swinging pin is improved, and then ensure to swing the use longevity of pin Life.Meanwhile, vibration when swinging pin swing in high frequency can also be reduced by reducing the swing angle of swing pin, be improved when sander is used Comfort level, reduces the maintenance time and cost of sander, it is ensured that the performance of sander.Sander of the present utility model passes through Swinging the length of pin increases with the increase of offset to ensure the angular range of deflection angle, to reduce the angle of deflection angle, Effective solution is easily tired because swinging swing pin caused by the deflection angle of pin causes greatly swing pin bending stress to be difficult to discharge The problem of fracture, improve the reliability for swinging pin, it is to avoid swing human hair combing waste life fatigue fracture phenomenon, it is ensured that the reliability of sander work Property.

Brief description of the drawings

Fig. 1 is the structural representation of the sander of the embodiment of the utility model one；

Fig. 2 is the cross section structure diagram at the A-A shown in Fig. 1；

Fig. 3 is swing pin in the sander shown in Fig. 1 in static schematic diagram；

Schematic diagrams of the Fig. 4 for swing pin in the sander shown in Fig. 1 when swinging, wherein, the position of axis has been deviateed The initial position where axis shown in Fig. 3；

Wherein：

100- sanders；

110- fuselages；

120- swings pin；

121- axis；

130- bottom deck assemblies；

131- working plates；

132- base pads；

140- connectors.

Embodiment

In order that the purpose of this utility model, technical scheme and advantage are more clearly understood, by the following examples, and tie Accompanying drawing is closed, sander of the present utility model is further elaborated.It should be appreciated that specific embodiment described herein Only to explain the utility model, it is not used to limit the utility model.

In description of the present utility model, it is to be understood that term " " center ", " longitudinal direction ", " transverse direction ", " length ", " width Degree ", " thickness ", " on ", " under ", "front", "rear", "left", "right", " vertical ", " level ", " top ", " bottom " " interior ", " outer ", " axle To ", " radial direction ", the orientation of the instruction such as " circumference " or position relationship be based on orientation shown in the drawings or position relationship, be only for It is easy to description the utility model and simplifies describe, rather than to indicate or imply that signified device or element must have specific Orientation, with specific azimuth configuration and operation, therefore it is not intended that to limitation of the present utility model.

In addition, term " first ", " second " are only used for describing purpose, and it is not intended that indicating or implying relative importance Or the implicit quantity for indicating indicated technical characteristic.Thus, define " first ", the feature of " second " can express or Implicitly include at least one this feature.In description of the present utility model, " multiple " are meant that at least two, such as two It is individual, three etc., unless otherwise specifically defined.

In the utility model, unless otherwise clearly defined and limited, term " installation ", " connected ", " connection ", " Gu It is fixed " etc. term should be interpreted broadly, for example, it may be fixedly connected or be detachably connected, or integrally；Can be Mechanically connect or electrically connect or can communicate each other；Can be joined directly together, the indirect phase of intermediary can also be passed through Even, can be two element internals connection or two elements interaction relationship, unless otherwise clear and definite restriction.For this For the those of ordinary skill in field, concrete meaning of the above-mentioned term in the utility model can be understood as the case may be.

Referring to Fig. 1 to Fig. 4, the utility model provides a kind of sander 100, and sander 100 is made for completing sanding Industry, polishing is polished to the surface of material or workpiece so that the surface of material or workpiece meets technological requirement, met Use demand.Sander 100 of the present utility model can reduce the deflection angle for swinging pin 120, then avoid swinging the bias of pin 120 The bending angle of pin 120 is swung during swing greatly plus the easy fatigue fracture of pin 120 is swung caused by swing in high frequency, improves and swings pin 120 reliability, and then ensure the performance of sander 100.

In the present embodiment, sander 100 includes fuselage 110, swings pin 120 and bottom deck assembly 130.Fuselage 110 is sand The body body of ray machine 100, most of parts of sander 100 are located in fuselage 110.Be provided with fuselage 110 motor and Drive component, passes through power source of the motor as sander 100.The one end for swinging pin 120 is connected with fuselage 110, swings pin 120 The other end be connected with bottom deck assembly 130, bottom deck assembly 130 is also connected with drive component, drive component driving bottom deck assembly 130 Motion, and moved by swinging the limitation bottom deck assembly 130 of pin 120.Sander 100 is when carrying out sanding operation, the electricity of fuselage 110 Machine can drive bottom deck assembly 130 to move by drive component, simultaneously because swinging the other end and bottom deck assembly 130 of pin 120 Connection, the motion of bottom deck assembly 130 can be limited by swinging pin 120, and then realize that bottom deck assembly 130 can carry out oscillating motion, So that bottom deck assembly 130 enters andante sand operation to workpiece, to meet use demand.

For the ease of the restriction for the deflection angle for swinging pin 120, the deflection angle and offset for swinging pin 120 are introduced, specifically For：Swinging pin 120 has axis 121, and drive component driving bottom deck assembly 130 moves and swung the limitation bottom deck assembly of pin 120 During 130 motion, the angle of the skew of axis 121 of pin 120 is swung to swing the deflection angle of pin 120, pin 120 is swung away from fuselage The displacement of 110 one end skew is the offset for swinging pin 120.Pin 120 is swung when swinging, pin 120 is swung and connects with fuselage 110 The one end connect is motionless, swings the end motion that pin 120 is connected with bottom deck assembly 130, now, swings the meeting of axis 121 of pin 120 The initial position of axis 121 when deviation swing pin 120 is static, therefore, note swings the angle that the axis 121 of pin 120 is offset To swing the deflection angle of pin 120, swing the displacement of one end skew of the pin 120 away from fuselage 110 to swing the offset of pin 120. Moreover, the relation between deflection angle and offset is：Deflection angle=arctg (offset ÷ swings the length of pin 120), that is, swing The length of pin 120 increases with the increase of offset, so that the angle of deflection angle is limited in preset range.That is, When swinging the offset increase of pin 120, the length for swinging pin 120 is also accordingly increased, and so can will swing the inclined of pin 120 Pivot angle is limited within a preset range, not too large to ensure the bending angle for swinging pin 120, and then avoids swing pin 120 easy Fatigue fracture, improves the reliability for swinging pin 120.In the utility model, the length for swinging pin 120 refers to swing pin 120 Effective wobble length, effective wobble length refers to that the total length for swinging pin 120 is subtracted and swings fixed part above and below the two ends of pin 120 Length.

During the offset increase of the swing pin 120 of sander 100 of the present utility model, the length of pin 120 is swung by increasing Degree, so that swinging pin 120 can be limited in default scope, it is effective to reduce the deflection angle for swinging pin 120, so can Reduce the bending angle for swinging pin 120, it is to avoid the bending stress of pin 120 is swung caused by swinging the swing in high frequency of pin 120 and is difficult The problem of release, and then avoid swing pin 120 from the phenomenon of fatigue fracture occur, the reliability for swinging pin 120 is improved, and then ensure Swing the service life of pin 120.Meanwhile, reducing the swing angle of swing pin 120 can also reduce when swinging 120 swing in high frequency of pin Vibration, improves comfort level when sander 100 is used, and reduces the maintenance time and cost of sander 100, it is ensured that sander 100 Performance.Sander 100 of the present utility model is increased to protect by swinging the length of pin 120 with the increase of offset The angular range of deflection angle is demonstrate,proved, it is effective to solve to cause pendulum greatly because swinging the deflection angle of pin 120 to reduce the angle of deflection angle The problem of dynamic bending stress of pin 120 is difficult to swing 120 easy fatigue fracture of pin caused by discharging, improves the reliability for swinging pin 120 Property, it is to avoid swinging pin 120 occurs fatigue fracture phenomenon, it is ensured that the reliability that sander 100 works.

As a kind of embodiment, the preset range of the angle of deflection angle is less than or equal to 2.5 °.That is, to protect Card swings the fatigue crack-resistant performance of pin 120, swings the preset range of the angle of the deflection angle of pin 120 and should be not more than 2.5 °, this Sample, which can reduce, swings the folding force that pin 120 is subject to, even if swinging pin 120 when high-frequency reciprocating is swung, swings pin 120 and also will not Occur the phenomenon of fatigue fracture, improve the reliability for swinging pin 120.It is preferred that the preset range of the angle of deflection angle is 1.5 ° ~2.5 °.When swinging the deflection angle of pin 120 within the above range, the folding force that pin 120 is subject to can be further swung, pendulum is improved The reliability of dynamic pin 120, simultaneously, moreover it is possible to ensure to swing the swing performance of pin 120, to ensure the running orbit of bottom deck assembly 130, And then ensure the operation effectiveness of sanding operation.

Further, when offset is more than 1mm, the length for swinging pin 120 is less than or equal to the 1/ of the whole machine height of sander 100 2.That is, when offset is more than 1mm, the length for swinging pin 120 is the 1/2 of the whole machine height of sander 100 to the maximum, so The angle of deflection angle can be ensured in above-mentioned preset range, the folding force for being unlikely to be subject to swing pin 120 is excessive, even if Pin 120 is swung when high-frequency reciprocating is swung, the phenomenon of fatigue fracture will not also be occurred by swinging pin 120, that improves swing pin 120 can By property.Yet further, when offset is more than 1mm, the length for swinging pin 120 is more than or equal to 23mm, that is, swings the length of pin 120 At least 23mm, now ensure that and swings deflection angle when pin 120 is swung within a preset range, to ensure to swing pin 120 Reliability.When i.e. offset is more than 1mm, the length of pin 120 is swung between 23mm and the 1/2 of whole machine height.

As a kind of embodiment, bottom deck assembly 130 includes working plate 131 and is arranged on working plate 131 Base plate bearing, drive component is connected to drive working plate 131 to move with base plate bearing.Although swinging pin 120 to lengthen and can solve The problem of certainly deflection angle is big caused by increase offset, but to swing cause after pin 120 is lengthened swings the shakiness of pin 120.Swing Pin 120 swings pin 120 when bearing axial load and is easily bent the problem of causing vibration big and easily fail, therefore in working plate Increase base plate bearing on 131 to solve the above problems.Base plate bearing can share part and swing the axial load that pin 120 is subject to, To improve the reliability for swinging pin 120, and then ensure the performance of sander 100.Further, the outer ring of base plate bearing is straight The size range in footpath is 35mm~52mm.That is, when the offset for swinging pin 120 is more than 1mm, the outer ring of base plate bearing Diameter ensure that the axial load of carrying in 35mm~52mm, both not interfere with the swing performance for swinging pin 120, additionally it is possible to keep away Exempt from swing pin 120 and bear excessive axial load, the reliability for swinging pin 120 is improved, in making for identical operating mode lower swing pin 120 It can be lifted more than twice with the life-span.Yet further, bottom deck assembly 130 also includes base pad 132, and base pad 132 is arranged at work Make base plate 131 away from the surface for swinging pin 120.Andante sand operation is entered to workpiece by base pad 132, ensure that sanding is made Industry performance, meets use requirement.

As a kind of embodiment, sander 100 also include connector 140, connector 140 connection swing pin 120 with Bottom deck assembly 130, is moved so as to swing pin 120 and limit bottom deck assembly 130 by connector 140.The connection of connector 140 swings pin 120 with bottom deck assembly 130, so ensure that bottom deck assembly 130 and swing and connect reliable between pin 120, it is ensured that sander 100 The reliability of work.Also, before installation connecting element 140, swing positioning surface and the positioning of working plate 131 of pin 120 Surface is not contacted；After installation connecting element 140, swing pin 120 makes swing pin 120 under the pulling force effect of connector 140 Positioning surface is in contact with the positioning surface of working plate 131, so ensure that the tensile strength for swinging pin 120 is more than resistance to compression Intensity, improves the reliability for swinging pin 120, extends the reliability of working plate 131.

Embodiment described above only expresses several embodiments of the present utility model, and it describes more specific and detailed, But therefore it can not be interpreted as the limitation to the utility model the scope of the claims.It should be pointed out that for the common of this area For technical staff, without departing from the concept of the premise utility, various modifications and improvements can be made, these all belong to In protection domain of the present utility model.Therefore, the protection domain of the utility model patent should be determined by the appended claims.

Claims (8)

1. a kind of sander, it is characterised in that including：

Drive component is provided with fuselage, the fuselage；

Pin is swung, one end of the swing pin is connected with the fuselage, the swing pin has axis；And

Bottom deck assembly, is connected with the other end of the swing pin；The bottom deck assembly is also connected with the drive component, described to drive Bottom deck assembly described in dynamic Component driver is moved, and passes through the range of movement of the swing pin limitation bottom deck assembly；

When the drive component driving bottom deck assembly motion and the swing pin limit the bottom deck assembly motion, the pendulum The angle of the axis line skew of dynamic pin is the deflection angle of the swing pin, and the one end of the swing pin away from the fuselage is offset Displacement is the offset of the swing pin, and the offset and the ratio of the length of the swing pin are not more than the deflection angle The tangent value of predetermined angle scope.

2. sander according to claim 1, it is characterised in that the predetermined angle scope of the deflection angle be less than or equal to 2.5°。

3. sander according to claim 2, it is characterised in that the predetermined angle scope of the deflection angle is 1.5 °~ 2.5°。

4. sander according to claim 1, it is characterised in that when the offset is more than 1mm, the length of the swing pin 1/2 of degree less than or equal to the whole machine height of sander.

5. sander according to claim 4, it is characterised in that when the offset is more than 1mm, the length of the swing pin Degree is more than or equal to 23mm.

6. the sander according to any one of claim 1 to 5, it is characterised in that the bottom deck assembly includes working plate And the base plate bearing on the working plate is arranged at, the drive component is connected to drive the work with the base plate bearing Base plate is moved.

7. sander according to claim 6, it is characterised in that the size range of the race diameter of the base plate bearing is 35mm~52mm.

8. the sander according to any one of claim 1 to 5, it is characterised in that the sander also includes connector, institute The connector connection swing pin and the bottom deck assembly are stated, so that the swing pin limits the base plate by the connector Component movement.