CN101804597B - Dual-chassis structure of sander - Google Patents
Dual-chassis structure of sander Download PDFInfo
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- CN101804597B CN101804597B CN2009100245277A CN200910024527A CN101804597B CN 101804597 B CN101804597 B CN 101804597B CN 2009100245277 A CN2009100245277 A CN 2009100245277A CN 200910024527 A CN200910024527 A CN 200910024527A CN 101804597 B CN101804597 B CN 101804597B
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Abstract
The invention relates to a dual-chassis structure of a sander, which is connected to a motor shaft (21) of a motor (2) for providing a driving force. The motor shaft (21) is provided with an axial lead X; the dual-chassis structure comprises an inner chassis (4) and an outer chassis (5) which are in nesting arrangement and a connecting plate connected with the motor shaft (21), wherein the inner chassis (4) and the outer chassis (5) are simultaneously connected to the connecting plate; and the inner chassis (4) is provided with an axial lead Y, the outer chassis (5) is provided with an axial lead Z, and the axial lead Y and the axial lead Z are respectively positioned on both sides of the axial lead X. In the dual-chassis structure, an inner plate and an outer plate are respectively connected to a fan, a phase difference of 180 degrees exists between the inner plate and the outer plate, so that the disadvantages of high height and center of gravity of a complete machine because an output shaft is sequentially connected with the inner chassis and the outer chassis in an axial direction are overcome; and the inner plate and the outer plate are respectively connected with the fan, so the dual-chassis structure has the advantages of simple structure and convenient assembly and can achieve the effect of balanced vibration.
Description
Technical field
The present invention relates to a kind of hand-held type of power tool, especially a kind of eccentric rotation type power tool, like sander, the Double bottom dish structure on more particularly a kind of sander.
Background technology
A hand-held type of power tool especially adopts the power tool of eccentric rotation mode, because its working head is arranged off-centre for driving shaft, therefore, in rotary course and cause easily and receive force unbalance, causes the bigger problem of vibrations.If the user is behind this eccentric rotation type power tool of long-term use, it is numb to be easy to palm, causes diseases such as hand joint injury.Thereby industry has proposed different solutions to this problem.
Comparatively commonly in off-centre rotation type power tool, increase the mode of balance weight.This balance weight is 180 ° of phase differences with the eccentric shaft that drives working head to be arranged, can alleviate certain eccentric shaking, helps the user and protects wrist, and improved the comfort level of user's operation.
One Chinese patent application CN200510067539.X has proposed another kind of solution.A kind of eccentric rotation type power tool is provided in this patent application, has been specially sander, it comprises two working heads, and is the internal and external disk nested arrangement, and promptly inner working head is dish, and outside working head ringwise.These two working heads all adopt eccentric mode to be connected on the output shaft of motor, and still, the eccentric angle of internal and external disk is different, have 180 ° of phase differences between the two.Promptly the axial line with output shaft is the center; When inside turn goes to off-centered right-most position; Inverted position turn goes to off-centered left-most position, and when inside turn went to off-centered left-most position, inverted position turn went to off-centered right-most position.In a word, always there is 180 ° phase difference between the position of the two with respect to axial line.
Adopt in such a way; Owing to the eccentric chassis that is provided with phase difference by self in rotary course; Offset the vibrations that eccentric rotation brings, entire machine is in use remained under a kind of dynamically balanced state always, thereby as far as the user; Reduce numb feel and felt, promoted the comfortableness of operation.
But because in this scheme, the output shaft of motor need connect internal and external disk respectively, promptly on axial direction, has connected outer dish bearing and inner disc bearing successively, makes integral body higher, center of gravity is also higher.Because center of gravity is higher also is to cause machine in use to shake a big factor.For the influence that the elimination vibrations of trying one's best bring, the position of centre of gravity of machine also is the factor that needs consideration.
Therefore, prior art is necessary further improvement in fact.
Summary of the invention
The object of the present invention is to provide a kind of dual-chassis structure of sander, its compact conformation, complete machine height and center of gravity are all lower, shake also less.
For realizing above-mentioned purpose, the invention provides a kind of dual-chassis structure of sander, be connected on the motor drive shaft of the motor that driving force is provided; Wherein motor drive shaft has axial line X; Double bottom dish structure comprises the interior chassis and outer chassis that is nested setting, comprises that also the terminal pad that is connected with motor drive shaft, said interior chassis and outer chassis are connected on the terminal pad simultaneously, and interior chassis has axial line Y; Outer chassis has axial line Z, and said axial line Y and axial line Z lay respectively at the both sides of axial line X.
As the improvement to such scheme, said axial line Y, X, Z are positioned on the straight line successively.
Said terminal pad is a fan, and it comprises the neck that is provided with respect to axial line X skew, and said neck is provided with the accepting groove that is provided with respect to axial line X skew.
Said neck and accepting groove are overlapping on axial direction.
There are 180 ° of phase differences between said neck and the accepting groove.
The chassis is fixedly connected on the accepting groove by screw in said.
Be provided with the axle center pin in the said accepting groove and be set in the clutch shaft bearing on the pin of axle center, and support through the sealing of first baffle plate.
Said first baffle plate is provided with perforation, and said screw passes perforation and is threaded with the axle center pin.
Said outer chassis is fixedly connected on the neck by outer dish bracing frame.
The outside of said neck is arranged with second bearing, and said outer dish bracing frame is set on second bearing, and supports second bearing through the second baffle sealing.
Adopted among the present invention internal and external disk is connected on the fan, and had 180 ° phase difference between the two, avoided output shaft on axial direction, connect successively in the chassis and outside the complete machine height that causes of chassis higher, the drawback that center of gravity is also higher.And internal and external disk connects fan respectively, and it is simple in structure, and is easy to assembly, can reach the effect of balance vibrations equally.
Description of drawings
Fig. 1 is the sketch map that adopts the sander of Double bottom dish structure in the preferred embodiments of the present invention.
Fig. 2 is the three-dimensional explosive view of this dual-chassis structure of sander.
Fig. 3 a is the user mode reference diagram of this dual-chassis structure of sander, and at this moment, inside turn goes to the leftmost side of departing from central shaft.
Fig. 3 b is the user mode reference diagram of this dual-chassis structure of sander, and at this moment, inside turn goes to the rightmost side of departing from central shaft.
Fig. 4 a is the rotation principle schematic of Double bottom dish structure, and at this moment, inner disc is positioned at 0 ° of position.
Fig. 4 b is the rotation principle schematic of Double bottom dish structure, and at this moment, inner disc is positioned at 90 ° of positions.
Fig. 4 c is the rotation principle schematic of Double bottom dish structure, and at this moment, inner disc is positioned at 180 ° of positions.
Fig. 4 d is the rotation principle schematic of Double bottom dish structure, and at this moment, inner disc is positioned at 270 ° of positions.
Related elements reference numeral in the diagram is following:
1, housing 2, motor 3, fan
4, interior chassis 5, outer chassis 21, motor drive shaft
31, neck 32, accepting groove 33, axle center pin
34, clutch shaft bearing 35, first baffle plate 351, perforation
36, second bearing 37, coil bracing frame 38, second baffle outward
39, screw
The specific embodiment
Below in conjunction with accompanying drawing and specific embodiment the present invention is done further detailed description.
Seeing also Fig. 1 to Fig. 2, is that example describes with the sander in the most preferred embodiment of the present invention.A kind of sander that adopts Double bottom dish structure comprises casing 1 and the motor 2 that is arranged on casing 1 inside.Motor 2 is used to provide driving force, comprises motor drive shaft 21, and its corresponding axial line is X.A terminal pad is specially fan 3, is connected on the motor drive shaft 21; Comprise neck 31 and flabellum portion, neck 31 is eccentric with respect to axial line X and is provided with, simultaneously; On the neck 31 with respect to axial line X also eccentric be provided with accepting groove 32, thereby make neck 31 form the circulus of an off-centre.It should be noted that; Neck 31 differs 180 ° of phase differences with respect to the off-centre setting of axial line X and accepting groove 32 with respect to the off-centre setting of axial line X; Thereby make accepting groove 32 have an axial line Y with respect to axial line X skew, there is an axial line Z with respect to axial line X skew in neck 31.Axial line X, Y, Z are co-located in the plane, and perhaps axial line Y, Z lay respectively at the both sides of axial line X.
In the interior ring of said circulus, promptly in the accepting groove 32, an axle center pin 33 and the clutch shaft bearing 34 that is set on the axle center pin 33 are contained in this, and support through 35 sealings of one first baffle plate.Simultaneously, one second bearing 36 is set on the outer shroud of circulus, i.e. the outside of neck 31, and an outer shroud bracing frame 37 is set on second bearing 36, and supports second bearing 36 through 38 sealings of a second baffle.First baffle plate 35 is provided with 351, one screws 39 of perforation and passes interior chassis 4, and is inserted into the axle center pin 33 that is arranged in accepting groove 32 always, with the mode that is threaded interior chassis 4 is fixedly connected on the fan 3.Simultaneously, outer chassis 5 is connected on the outer dish bracing frame 37, and promptly outer chassis 5 also is to be connected on the fan 3.
Thereby, be connected interior chassis 4 and nested Double bottom dish structure inside and outside outer chassis 5 forms on the fan 3 simultaneously.In this structure, the assembly structure of complete machine is comparatively compact, has reduced the height of complete machine greatly, makes the center of gravity of complete machine also obtain reduction simultaneously.
See also Fig. 3, the Double bottom dish sander among the present invention is explained rotary principle respectively through two state points in the course of work.The motor drive shaft 21 of motor 2 has axial line X, is connected the axial line Y that interior chassis 4 on the accepting groove 32 has skew, is connected the axial line Z that outer chassis 5 on the neck 31 has skew.
Shown in Fig. 3 a, the interior chassis 4 of this moment rotates to the leftward position of skew axial line X, and its axial line Y also is positioned at the left side of axial line X, and simultaneously, outer chassis 5 will rotate to the right positions of skew axial line X, and its axial line Z also is positioned at the right side of axial line X.
Shown in Fig. 3 b, the interior chassis 4 of this moment rotates to the right positions of skew axial line X for another example, and its axial line Y also is positioned at the right side of axial line X, and simultaneously, outer chassis 5 will rotate to the leftward position of skew axial line X, and its axial line Z also is positioned at the left side of axial line X.Because the interior chassis 4 of being adopted is identical haply with respect to the rotating torque of axial line X with outer chassis 5; Therefore they are also roughly the same because of the vibrations that the off-centre rotation brings; But by 180 ° of phase differences between the two; The vibrations of the two are cancelled, thereby make machine keep a kind of dynamic equilibrium state on the whole.Help reducing vibrations like this, promote user's operational comfort.
Just list rotary principle on the both direction of having lifted Double bottom dish sander among Fig. 3.See also Fig. 4, from the rotation diagram of Double bottom dish, provided rotary principle explanation on the circumference four direction.
Shown in Fig. 4 a, the interior chassis 4 of this moment is arranged in the low order end of rotation process, and this point is defined as 0 ° of point, and simultaneously, outer chassis 5 is arranged in the rotation process high order end.Axial line Y, X, the Z on interior chassis 4, motor drive shaft 21 and outer chassis 5 are positioned on the horizontal straight line successively.
Shown in Fig. 4 b, the interior chassis 4 of this moment is arranged in the top of rotation process, and this point is defined as 90 ° of points, and simultaneously, outer chassis 5 is arranged in rotation process bottom.Axial line Y, X, the Z on interior chassis 4, motor drive shaft 21 and outer chassis 5 is positioned at one longitudinally on the straight line successively.
Shown in Fig. 4 c, the interior chassis 4 of this moment is arranged in the high order end of rotation process, and this point is defined as 180 ° of points, and simultaneously, outer chassis 5 is arranged in the rotation process low order end.Axial line Y, X, the Z on interior chassis 4, motor drive shaft 21 and outer chassis 5 are positioned on the horizontal straight line successively, but opposite among order and Fig. 4 a.
Shown in Fig. 4 d, the interior chassis 4 of this moment is arranged in rotation process bottom, and this point is defined as 360 ° of points, and simultaneously, outer chassis 5 is arranged in rotation process topmost.Axial line Y, X, the Z on interior chassis 4, motor drive shaft 21 and outer chassis 5 is positioned at one longitudinally on the straight line successively, but opposite among order and Fig. 4 b.In the rotation process of Double bottom dish, the slewing area of internal and external disk all is between above-mentioned four points, and rotation situation also all is identical, and promptly axial line Y, X, Z are positioned on the straight line successively.
Certainly, axial line Y, X, Z are positioned on the straight line successively, are best embodiments; Can reach dynamically balanced state to greatest extent; But, also can produce axial line Y, X, Z and be positioned on the straight line, and make result of use a bit weaker from situation such as technology and wearing and tearing.But such application is still within protection scope of the present invention.
The disclosed Double bottom dish of the present invention structure be with sander as concrete embodiment, but be not just to be confined to be applied on the sander.In other multiple eccentric rotary class power tools, can use such Double bottom dish structure equally.
Claims (9)
1. dual-chassis structure of sander; Be connected on the motor drive shaft (21) of the motor (2) that driving force is provided, wherein motor drive shaft (21) has axial line X, and Double bottom dish structure comprises interior chassis (4) and outer chassis (5) that are nested setting; It is characterized in that: also comprise the terminal pad that is connected with motor drive shaft (21); Chassis (4) and outer chassis (5) are connected on the terminal pad simultaneously in said, and said terminal pad comprises the neck (31) that is provided with respect to axial line X skew, and said neck (31) is provided with the accepting groove (32) that is provided with respect to axial line X skew; Said neck (31) and accepting groove (32) are overlapping on axial direction; Said outer chassis (5) is connected on the said neck (31), and said interior chassis (4) is connected on the said accepting groove (32), and interior chassis (4) have axial line Y; Outer chassis (5) has axial line Z, and said axial line Y and axial line Z lay respectively at the both sides of axial line X.
2. dual-chassis structure of sander as claimed in claim 1 is characterized in that: said axial line Y, X, Z are co-located in the plane.
3. dual-chassis structure of sander as claimed in claim 1 is characterized in that: said terminal pad is fan (3).
4. dual-chassis structure of sander as claimed in claim 3 is characterized in that: have 180 ° of phase differences between said neck (31) and the accepting groove (32).
5. dual-chassis structure of sander as claimed in claim 4 is characterized in that: chassis (4) is fixedly connected on the said accepting groove (32) by screw (39) in said.
6. dual-chassis structure of sander as claimed in claim 5 is characterized in that: be provided with axle center pin (33) in the said accepting groove (32) and be set in the clutch shaft bearing (34) on the axle center pin (33), and support through first baffle plate (35) sealing.
7. dual-chassis structure of sander as claimed in claim 6 is characterized in that: said first baffle plate (35) is provided with perforation (351), and said screw (39) passes perforation (351) and is threaded with axle center pin (33).
8. dual-chassis structure of sander as claimed in claim 4 is characterized in that: said outer chassis (5) is fixedly connected on the said neck (31) by outer dish bracing frame (37).
9. dual-chassis structure of sander as claimed in claim 8; It is characterized in that: the outside of said neck (31) is arranged with second bearing (36); Said outer dish bracing frame (37) is set on second bearing (36), and supports second bearing (36) through second baffle (38) sealing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100245277A CN101804597B (en) | 2009-02-12 | 2009-02-12 | Dual-chassis structure of sander |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100245277A CN101804597B (en) | 2009-02-12 | 2009-02-12 | Dual-chassis structure of sander |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101804597A CN101804597A (en) | 2010-08-18 |
| CN101804597B true CN101804597B (en) | 2012-07-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009100245277A Active CN101804597B (en) | 2009-02-12 | 2009-02-12 | Dual-chassis structure of sander |
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| Country | Link |
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| CN (1) | CN101804597B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103846766B (en) * | 2012-11-28 | 2017-08-22 | 苏州宝时得电动工具有限公司 | Double plate justifies sand machine |
| CN104440476B (en) * | 2013-09-13 | 2017-08-01 | 苏州宝时得电动工具有限公司 | Sander |
| EP3476537A4 (en) * | 2016-06-28 | 2020-03-11 | Positec Power Tools (Suzhou) Co., Ltd | Sanding machine, operating method thereof and working baseplate disassembly-assembly method |
| EP4063069B1 (en) * | 2021-03-23 | 2022-12-07 | Andrea Valentini | Plate-like backing pad adapted for releasable attachment to a hand-held polishing or sanding power tool |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1413805A (en) * | 2001-07-20 | 2003-04-30 | 布莱克-德克尔公司 | Hand vibrating tool |
| CN1748939A (en) * | 2004-04-16 | 2006-03-22 | 苏州宝时得电动工具有限公司 | Anti-vibration arrangement, tool using said anti-vibration arrangement and its method for cleaning working surface |
| CN201353721Y (en) * | 2009-02-13 | 2009-12-02 | 苏州宝时得电动工具有限公司 | Sander double-chassis structure |
-
2009
- 2009-02-12 CN CN2009100245277A patent/CN101804597B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1413805A (en) * | 2001-07-20 | 2003-04-30 | 布莱克-德克尔公司 | Hand vibrating tool |
| CN1748939A (en) * | 2004-04-16 | 2006-03-22 | 苏州宝时得电动工具有限公司 | Anti-vibration arrangement, tool using said anti-vibration arrangement and its method for cleaning working surface |
| CN201353721Y (en) * | 2009-02-13 | 2009-12-02 | 苏州宝时得电动工具有限公司 | Sander double-chassis structure |
Non-Patent Citations (1)
| Title |
|---|
| JP特开2002-144210A 2002.05.21 |
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| CN101804597A (en) | 2010-08-18 |
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Denomination of invention: Dual-chassis structure of sander Effective date of registration: 20140515 Granted publication date: 20120704 Pledgee: Bank of Communications Ltd Suzhou branch Pledgor: Baoshide Electric Tools Co., Ltd., Suzhou Registration number: 2014990000362 |
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Date of cancellation: 20180416 Granted publication date: 20120704 Pledgee: Bank of Communications Ltd Suzhou branch Pledgor: Baoshide Electric Tools Co., Ltd., Suzhou Registration number: 2014990000362 |