CN2663080Y

CN2663080Y - Plate sander

Info

Publication number: CN2663080Y
Application number: CN 200320122828
Authority: CN
Inventors: 朱文华
Original assignee: Individual
Current assignee: Individual
Priority date: 2003-12-22
Filing date: 2003-12-22
Publication date: 2004-12-15
Anticipated expiration: 2013-12-22

Abstract

The utility model discloses a flat board sanding machine which comprises a shell(1), an electric motor(7), a switch(6), a commutator(5), a carbon brush assembly(2), an eccentric turnplate(9), a supporting pole framework(19), a soleplate(15) and a lining mat(16); one end of the electric motor(7) is provide with the commutator(5) and the other end is provided with the eccentric dial(9); the carbon brush assembly(2) is provided on the shell(1); the supporting framework(19) is arranged on the shell(1) on both sides of the eccentric dial(9); the soleplate(15) is matched with the eccentric dial(9) and is connected with the supporting framework(19); the shell(1) is provided with a detachable cover(3); the cover(3) is opposite to the carbon brush assembly(2) referring to position. For the above structure, the carbon brush is able to be changed by detaching the cover(3); the utility model is easy and convenient to be used and will not influence the quality of the whole machine; the mechanical intensity and flexibility of the supporting pole framework is enhanced greatly under the effect of the protecting later of the soft body(20); and the utility model has the advantages of simple and compact structure, and the carbon brush is convenient to be changed, the supporting frame has a long service life and the sand paper is fixed steadily.

Description

Dull and stereotyped sander

One, technical field

The utility model relates to the improvement of a kind of sander, particularly a kind of dull and stereotyped sander.

Two, background technology

Dull and stereotyped sander is a kind of special portable electric tool for polishings such as carpenter surface, wall, car surface, polishing, its work be by the eccentric rotating disk of driven by motor rotate at a high speed, eccentric rotating disk drives the base plate high speed swinging, realizes polishing, polishing function.The problem that present dull and stereotyped sander mainly exists has: the one, and motor is constantly changed by carbon brush and commutator and is produced rotation at a high speed, serious wear when carbon brush rotates at motor, general 60 hours life-spans, must change carbon brush, and existing sander replacing carbon brush must be with base plate, connect support, the casing completely knocked down can take out brush, assemble one by one again behind the replacing carbon brush and go back, whole process is half an hour at least, how tired much less such structure have for the user, sometimes dismounting damages because of carelessness also easily other parts, even scrapping because of assembling causes the motor displacement that loom is burnt of having.The 2nd, base plate relies on four pillar skeletons and fuselage fixedly reaches evenly, sanding effect stably, during work, requires base plate high speed swinging, fuselage motionless, and this must cause that the pillar skeleton reverses at a high speed; The pillar skeleton of tradition sander all adopts plastics or rubber homogenous material to make, and material is used softly excessively, stretches easily, can change the distance between base plate and the casing during use, and generation is beated, cisco unity malfunction; Material is used really up to the markly, can make swing interrupted, pins down fuselage simultaneously, causes whole machine vibrations, and operator's both hands are numb can't hold operation; The most rambunctious is that the hard soft of material changes with temperature Change, and temperature one is low, material will hardening and crisp, use will produce phenomenon of rupture; Temperature one height, material will deliquescing, will produce during use and beat, and influence operate as normal; Support is unable to bear per minute inferior reversing up to ten thousand at all simultaneously, uses and will damage less than two months.The 3rd, traditional sander is only pressed sand paper with elastic force folder plane, and such structure can't solve at work loosening of sand paper, and wearing and tearing easily need often to change sand paper and sand paper folder, use cost height.

Three, summary of the invention

For overcoming the above-mentioned disadvantage that dull and stereotyped sander exists, problem to be solved in the utility model provides a kind of dull and stereotyped sander of changing carbon brush convenience, pillar skeleton long service life, sand paper fixation.The technical scheme that its technical problem that solves the utility model adopts comprises casing, motor, switch, commutator, brush, eccentric rotating disk, pillar skeleton, base plate, liner, motor is arranged on the casing by bearing, one end of motor is provided with commutator, the other end is provided with eccentric rotating disk, the brush that cooperates with commutator is arranged on the casing, and the strut bone frame is arranged on the casing of eccentric rotating disk both sides; Base plate is provided with the base plate bearing, and its both sides are provided with left and right sides sand paper folder, and liner is arranged on the base plate; The base plate bearing cooperates with eccentric rotating disk, and base plate is connected with the pillar skeleton, and described casing is provided with dismountable renovating, and renovates corresponding with the position of brush.

The compound flexible body that fuses with it on the described pillar skeleton, flexible body and pillar skeleton are combined into pillar.

Two post top portion of described the same side are provided with the fixed head with pillar skeleton one.

The two pillar bottoms of described the same side are provided with the brace that is mated.

Sand paper folder bottom, the described left and right sides is provided with the knuckle fastener, by shelves, cooperates with the knuckle fastener by shelves about base plate is provided with.

After adopting said structure,, when changing carbon brush, only need dismounting to renovate interchangeable owing on the casing of brush correspondence, be provided with dismountable renovating, very simple and convenient, more can not influence the complete machine quality; Again owing on the pillar skeleton, fill flexible body, this structure resembles the reinforced concrete post, with the reinforcing bar is skeleton, is inserts with the concrete, and such pillar vertically can not stretch, laterally can FREE TORSION, under the effect of flexible body protective layer, the mechanical strength and the pliability of pillar skeleton are greatly enhanced, through repeatedly destructive testing, the pillar of this structure all can not rupture to the duty of 90 degrees centigrade of high temperature at low temperature-40, has solved the defective that the conventional column skeleton exists; Again owing to the knuckle fastener is set in left and right sides sand paper folder bottom, about being provided with, leans on base plate shelves, cooperate with the knuckle fastener by shelves, during use, behind the sand paper knuckle knuckle is placed on default base plate by on the shelves, the knuckle fastener of sand paper folder is pressed on the sand paper knuckle, make the friction by the existing level of shelves of sand paper and base plate, friction is longitudinally arranged again, and the tension force of sand paper distortion, the loosening at work defective of sand paper solved.

Four, description of drawings

Fig. 1 is a structural representation of the present utility model.

Fig. 2 is the structural representation of the utility model pillar.

Fig. 3 is the B-B cutaway view of Fig. 2.

Fig. 4 is the structural representation of the another kind of pillar of the utility model.

Fig. 5 is the A-A cutaway view of Fig. 4.

Five, the specific embodiment

Fig. 1, Fig. 2 and shown in Figure 3, specific embodiments for a kind of dull and stereotyped sander of the utility model, it comprises casing 1, motor 7, switch 6, commutator 5, brush 2, eccentric rotating disk 9, pillar skeleton 19, base plate 15, liner 16, motor 7 is arranged on the casing 1 by bearing 4,8, one end of motor 7 is provided with commutator 5, the brush 2 that cooperates with commutator 5 is arranged on the casing 1, eccentric rotating disk 9 is arranged on the other end of motor 7, and pillar skeleton 19 is arranged on the casing 1 of eccentric rotating disk 9 both sides; Base plate 15 is provided with base plate bearing 11, and its both sides are provided with left and right sides sand paper folder 18,12, and liner 16 is arranged on the base plate 15; Base plate bearing 11 cooperates with eccentric rotating disk 9, base plate 15 passes through fixedly, and inserts 21 is connected with pillar skeleton 19, described casing 1 is provided with dismountablely renovates 3, renovate 3 corresponding with the position of brush 2, like this, when the transposing carbon brush, need only take off and renovate 3, take out carbon brush holder 2 then, with regard to the interchangeable carbon brush.The compound flexible body that fuses with it 20 on the described pillar skeleton 19, flexible body 20 and pillar skeleton 19 are combined into pillar 10.This structure resembles the reinforced concrete post, is skeleton with the reinforcing bar, is inserts with the concrete; such pillar 10 vertically can not stretch; laterally can FREE TORSION, under the effect of flexible body 20 protective layers, the mechanical strength and the pliability of pillar skeleton 19 are greatly enhanced.Described left and right sides sand paper folder 18,12 bottoms are provided with knuckle fastener 13, about being provided with, leans on base plate 15 shelves 14, cooperate with knuckle fastener 13 by shelves 14, during use, behind sand paper 17 knuckles knuckle is placed on default base plate by on the shelves 14, the knuckle fastener 13 of sand paper folder is pressed on the sand paper 17, sand paper 17 forms knuckle naturally, the bottom of knuckle fastener 13 is pressed on the sand paper 17 on base plate 15 planes, make the friction by shelves 14 existing levels of sand paper 17 and base plate 15, friction is longitudinally arranged again, and the tension force of sand paper 17 distortion, be clipped in left and right sides sand paper folder 18, sand paper 17 on 12 is solid and reliable.

For the ease of installing, and better improve the stability of complete machine, and the another kind of embodiment of pillar 10 such as Fig. 4, shown in Figure 5, two pillars, 10 tops of the same side are provided with the fixed head 23 with pillar skeleton 19 one, pillar 10 is inserted in by fixed head 23 on the draw-in groove of casing 1, installs very convenient; Can also be provided with the brace 22 that is mated in two pillars, 10 bottoms of the same side, the installation dimension of two pillars 10 is remained unchanged, simultaneously, the flexural capacity of pillar 10 is greatly enhanced.

Claims

1, a kind of dull and stereotyped sander, comprise casing (1), motor (7), switch (6), commutator (5), brush (2), eccentric rotating disk (9), pillar skeleton (19), base plate (15), liner (16), motor (7) is arranged on the casing (1) by bearing (4,8), one end of motor (7) is provided with commutator (5), the other end is provided with eccentric rotating disk (9), the brush (2) that cooperates with commutator (5) is arranged on the casing (1), and pillar skeleton (19) is arranged on the casing (1) of eccentric rotating disk (9) both sides; Base plate (15) is provided with base plate bearing (11), and its both sides are provided with left and right sides sand paper folder (18,12), and liner (16) is arranged on the base plate (15); Base plate bearing (11) cooperates with eccentric rotating disk (9), and base plate (15) is connected with pillar skeleton (19), it is characterized in that: described casing (1) is provided with dismountable renovating (3), renovate (3) corresponding with the position of brush (2).

2, dull and stereotyped sander according to claim 1 is characterized in that: described pillar skeleton (19) is gone up the compound flexible body that fuses with it (20), and flexible body (20) and pillar skeleton (19) are combined into pillar (10).

3, dull and stereotyped sander according to claim 2 is characterized in that: two pillars (10) top of described the same side is provided with the fixed head (23) with pillar skeleton (19) one.

4, dull and stereotyped sander according to claim 3 is characterized in that: two pillars (10) bottom of described the same side is provided with the brace (22) that is mated.

5, according to each described dull and stereotyped sander of claim 1 to 4, it is characterized in that: described left and right sides sand paper folder (18,12) bottom is provided with knuckle fastener (13), by shelves (14), cooperates with knuckle fastener (13) by shelves (14) about base plate (15) is provided with.