CN201668347U - Suction inlet assembly and electric sweeping machine - Google Patents

Abstract

Provided are a suction inlet assembly and an electric sweeping machine which can stop noises generated when hammers contact with arms. Arms (64b) are integrally molded on two sides of a recess (64c) formed on arms (64) of a main body (52) of a safety device (36). As strength of the arms (64) can be ensured structurally, hardness of the arms (64) can be reduced relatively. The suction inlet assembly and the electric sweeping machine can stop the noises generated when a hammer (53) contacts with front ends of main bodies (64a) of arms (64).

Description

Section port body and electric vacuum cleaner

Technical field

The utility model relates to a kind of electric vacuum cleaner that has the section port body of safety device and have this section port body, above-mentioned safety device the housing downside with respect to below the state that leaves of swept surface under cut off power supply to motor.

Background technology

In the past, this electric vacuum cleaner had the scavenging machine main body of accommodating electric blower.In this scavenging machine main body, mark off the main body dust storage chamber communicatively with the suction side of electric blower, this main body dust storage chamber via the main body suction inlet that forms in the upper shed of scavenging machine main body can with external communications.

And, on the main body suction inlet, be connected with hose body in turn, prolong and manage and brush as the ground of section port body, advance on ground by making this ground brush as swept surface, the negative pressure that driving produced by electric blower sucks ground dust, and control of dust is in the main body dust storage chamber.

As ground brush, be formed with the suction inlet of growing crosswise in the lower surface upper shed of the housing of growing crosswise, and, on this suction inlet, can be equipped with rotatably and be used for rotating brush that dust is scanned out from ground such as flannelette blankets as rotary cleaning body.

In addition, in the inside of housing, dispose the motor that is used for rotating brush is rotated driving.In addition, in lower part of frame safety device is installed, by this safety device, under the state that housing turns upside down, motor does not make the rotating brush rotation.

This safety device has the erecting device main body of the axle shape that can rotary axis of earth be supported on housing, and on this safety device main body, axle is supported with from the outstanding downwards roller of housing.In addition, the axial end in the safety device main body is formed with arm, is formed with contact site in axial the other end of erecting device main body, and this contact site is used to make the switch closure (Closed that often opens that electrically is disposed between motor and the mains side to become).

In addition, arm forms bending, and this forniciform arm has the recess of the hammer that can accommodate sphere-like.And, under the normal up and down state of housing, hammer is housed in the recess of arm, but under the state that housing turns upside down, hammer is outstanding and mobile from recess, stop the rotation of safety device main body by front end side contact with arm, thus, make the switch closure of often opening (for example, with reference to patent documentation 1).

Patent documentation 1: Japanese kokai publication hei 7-67814 communique (summary of invention)

But, in the brush of above-mentioned ground, because arm forms elongated curved shape, so, for not damaged because of contact with hammer, the use of erecting device main body contain the Merlon (PC) of glass fibre or contain polyphenylene sulfide (PPS) equal strength of glass fibre bigger, be hard material.Therefore, when arm contacts with hammer, there is the problem that produces big metallic sound noise.

The utility model content

The utility model is put in view of the above problems and is made, and its purpose is to provide a kind of can suppress the to be accompanied by section port body of hammering the noise that produces with contacting of arm into shape and the electric vacuum cleaner with this section port body.

In order to reach above-mentioned purpose, suction inlet of the present utility model is characterised in that to have: housing has the suction inlet at the lower surface opening; Rotary cleaning body can be disposed in the above-mentioned suction inlet rotatably; Motor is rotated driving to above-mentioned rotary cleaning body; And, safety device, can the downside of above-mentioned housing with respect to below the state that contacted of swept surface under, power to said motor, and, the downside of above-mentioned housing with respect to below the state that left of swept surface under, cut off power supply to said motor, above-mentioned safety device has: the switch of often opening is connected between mains side and the said motor side; The safety device main body, by with the contacting of above-mentioned swept surface, at least a portion of this safety device main body moves, closed thus above-mentioned switch; Arm is arranged at this safety device main body; And the hammer of sphere-like can stop moving of above-mentioned safety device main body, and above-mentioned arm has: the arm main body; Recess is formed at above-mentioned arm main body, and movably accommodates above-mentioned hammer; And wall portion is integrally formed in the both sides of above-mentioned recess,

Above-mentioned hammer is by contacting above-mentioned arm from above-mentioned recess to outside side shifting under the state that turns upside down of above-mentioned housing, thereby stops moving of above-mentioned safety device main body.

According to the utility model, form wall portion by both sides at the recess of arm, thereby, can structurally guarantee the intensity of arm, so, the hardness of the material of arm is reduced relatively, can provide and to suppress to follow hammer to contact the section port body of the noise that is produced and the electric vacuum cleaner that can suppress noise with arm.

Description of drawings

Fig. 1 represents the action of safety device of the section port body of an embodiment of the present utility model, the side view of the switch under Fig. 1 (a1) state that to be expression lift section port body from swept surface and the position of safety device main body, the side view of the safety device main body under Fig. 1 (a2) state that to be expression lift section port body from swept surface and the position of hammer, Fig. 1 (b1) expression is with the switch of section port body mounting under the state on the swept surface and the side view of the position of safety device main body, Fig. 1 (b2) is that expression is with the safety device main body of section port body mounting under the state on the swept surface and the side view of the position of hammer, Fig. 1 (c1) state that to be expression turn upside down the housing of the section port body switch down and the side view of the position of safety device main body, Fig. 1 (c2) are the side views of representing the position of safety device main body under the state that the housing with section port body turns upside down and hammer.

Fig. 2 represents above-mentioned safety device main body, and Fig. 2 (a) is the vertical view of safety device main body, and Fig. 2 (b) is the side view of safety device main body.

Fig. 3 is the vertical view that amplifies the part of the above-mentioned section port body of expression.

Fig. 4 is the vertical view of the part of the above-mentioned section port body of expression.

Fig. 5 is the stereogram that expression has the electric vacuum cleaner of above-mentioned section port body.

Description of reference numerals:

11 electric vacuum cleaners

13 scavenging machine main bodys

19 ground brushes as section port body

27 electric blowers

31 housings

33 suction inlets

34 rotating brushes as rotary cleaning body

35 motors

36 safety devices

52 safety device main bodys

53 hammers

56 switches

64 arms

64a arm main body

64b wall portion

The 64c recess

F is as the ground of swept surface

The specific embodiment

Below, referring to figs. 1 through Fig. 5 the structure of an embodiment of the present utility model is described.

In Fig. 5, the so-called cartridge type electric vacuum cleaner of carrying of 11 expressions, this electric vacuum cleaner 11 have pipe portion 12 and can be connected in the scavenging machine main body 13 of this pipe portion 12 with loading and unloading.

Pipe portion 12 has: the tube connector portion 15 that is connected in the straight tube-like of scavenging machine main body 13; Be communicated with the front of this tube connector portion 15 and have a flexible hose body 16; Be arranged at the hand operated portion 17 of the front of this hose body 16; Can be connected in the prolongation pipe 18 of the front of this hand operated portion 17 with loading and unloading; And can be connected in with loading and unloading this prolongation pipe 18 front, as the ground brush 19 of section port body.

In hand operated portion 17, handle part 21 is side-prominent to hose body 16, and this handle part 21 is provided with the setting button 22 of a plurality of operation usefulness.

In addition, scavenging machine main body 13 has not shown electric blower chamber of accommodating electric blower 27 and the not shown main body dust storage chamber that is communicated with this electric blower chamber in inside, by the travel wheel 28 (only illustrating) that is arranged on both sides, can on ground F (Fig. 1), advance as swept surface.In addition, the tube connector portion 15 as the base end side of pipe portion 12 can be connected in the main body dust storage chamber.And, in the main body dust storage chamber, can dispose as the paper bag of dust bag or as the not shown dust collecting part such as dust pocket of dust collect plant with loading and unloading.

Electric blower 27 is by the power supplies such as commercial ac power source that are housed in the not shown secondary cell in the scavenging machine main body 13 or connect via not shown mains cord, by the not shown control circuit in the scavenging machine main body 13 as controlling organization, to set the specified action pattern action that button 22 sets, suck air and dust via pipe portion 12.

In addition, ground brush 19 has housing 31 and tube connector 32 as shown in Figures 1 to 4, and this housing 31 is for example formed by synthetic resin etc. with growing crosswise, and this tube connector 32 can be connected in the rear portion of this housing 31 rotatably and be connected in prolongation manages 18.

In addition, on housing 31, be formed with the suction inlet 33 of growing crosswise with the opposed lower surface opening of ground F, and, the rotating brush 34 as rotary cleaning body can be installed in this suction inlet 33 rotatably.

And, containing motor 35 and safety device 36 respectively in the inside of housing 31,35 pairs of rotating brushes 34 of this motor are rotated driving, and this safety device 36 is used to make the power supply to said motor 35 to become and may or cut off and power.

Housing 31 has lower house 41 at last side opening, cover the upper shell 42 of the upside of this time side body 41, be clamped between these housings 41,42 and as the buffer 43 of buffer unit.

Suction inlet 33 openings are formed at the lower surface 41a of lower house 41, and are communicated with tube connector 32.

Around the rotating shaft 45 of the strip of rotating brush 34, a plurality of cleaning parts 46 of strips such as blade or hairbrush are installed along the direction of principal axis helically of rotating shaft 45.

And the both ends of rotating shaft 45 can rotate the two ends of the suction inlet 33 that the earth's axis is supported on lower casing 41 via bearing 47,47.In addition, on a side bearing 47, the revolving force of motor 35 transmits via the belt 48 as transmission mechanism.

Motor 35 is housed in a side at the rear of the suction inlet 33 in the housing 31.In addition, this motor 35 electrically is connected in scavenging machine main body 13 (Fig. 5) side by not shown distribution and via tube connector 32, prolongation pipe 18 (Fig. 5), hose body 16 (Fig. 5) and tube connector portion 15 (Fig. 5), by the not shown power supply power supply of this scavenging machine main body 13 (Fig. 5) side.In addition, this motor 35 can end by the conducting that driving is switched in the operation of setting button 22 (Fig. 5).

Safety device 36 is housed in the opposite side at the rear of the suction inlet 33 in the housing 31 as shown in Figure 3 and Figure 4.In addition, this safety device 36 has: the control part 51 that the rotation of control motor 35 drives; Can in housing 31, move, for example can be subjected to rotationally the safety device main body 52 of the axle shape of axle supporting; Be used to detect housing 31 above-below direction state, as the hammer 53 of the sphere-like of testing agency.

Control part 51 has: baseplate part 55, this baseplate part 55 are equipped with the motor control circuit of the rotation driving of control motor 35; The switch of often opening 56, this switch of often opening 56 electrically is connected in the motor control circuit of this baseplate part 55.

Baseplate part 55 is configured in the top of safety device main body 52.

Switch 56 can perhaps can cut off this power supply from power supply to motor 35 power supplies between the power supply and motor 35 of scavenging machine main body 13 sides.

In addition, this switch 56 electrically is connected with not shown condition selector switch, this condition selector switch for example is used for the clean conditions of situation that cleans ground such as flannelette blanket and the situation that cleans ground such as tatami etc. is selected, above-mentioned switch 56 is only select flannelette blanket etc. to need the rotation of rotating brush 34 to drive under the situation of cleaning floor by this condition selector switch, to motor 35 power supplies.

And, this switch 56 constitutes as follows, promptly, as shown in Figure 1, switch main body 56a and contact point arm 56b with case shape, this contact point arm 56 can rotary axis of earth be supported on the operating of contacts portion of above-mentioned switch main body 56a as an end, rotates more than the predetermined angular to switch main body 56a side by the front of this contact point arm 56b, thus Closing Switch 56.In addition, the front of contact point arm 56b is suppressed to the direction of leaving switch main body 56a.

The safety device main body 52 of safety device 36 axial one distolateral, is formed with the contact site 61 as the switch switching part that is used for Closing Switch 56 shown in Fig. 1, Fig. 2 (a) and Fig. 2 (b).

In axial centre position, radially forwards to be formed with a support 63,63 highlightedly in the mode of axially intersecting, 63,63 pairs of this supports can kiss the earth F roller 62 carry out the axle supporting, and, distolateral at axial another, radially be formed with arm 64 highlightedly.

In addition, this safety device main body 52 is clamped in lower casing 41 and is installed between the lid 65 on top of this lower casing 41 and by can the rotary axis of earth supporting from above-below direction.

In addition, in an axial end of this safety device main body 52, be equipped with and be used for torsion spring 66 that this safety device main body 52 is suppressed to rotation direction.And this safety device main body 52 is for example by relatively soft synthetic resin shapings such as polyformaldehyde (POM).

Contact site 61 is positioned at the upside of safety device main body 52, safety device main body 52 is being installed under the state of housing 31, and is mutually opposed with the below of the front of the contact point arm 56b of switch 56.And this contact site 61 constitutes, and by roller 62 contact of F earthward, safety device main body 52 is rotated, thus, the front of contact point arm 56b is gone into to switch main body 56a side pressure, thus Closing Switch 56.

Safety device main body 52 is being installed under the state of housing 31, roller 62 is outstanding to the below of housing 31 with peristome 68 (Fig. 4) from safety device, and above-mentioned safety device forms in the lower surface 41a of lower casing 41 upper shed with peristome 68.And this roller 62 constitutes, and is provided with nylon loop 62a at outer peripheral face, suppresses this roller 62 so that it below housing 31, thus, is brushing ground 19 mountings under the state on the F of ground by torsion spring 66, and it is kiss the earth F all the time.

Axle support 63,63 has a support holes 63a respectively, and this support holes 63a inserts logical for the rotating shaft 62b of roller 62 with rotating freely.

The 64b of wall portion, 64b that arm 64 has the arm main body 64a that extends into elongated wrist shape and is integrally formed at the both sides of this arm main body 64a.

Arm main body 64a with respect to safety device main body 52 rearward downside extend, in addition, the mode that front is turned back with front side upward forms bending.Therefore, on arm main body 64a, be formed with the recess 64c (Fig. 1 (a2)) that can accommodate hammer 53 in the front side.In addition, to Fig. 1 (b2), the right side is the front side of ground brush 19 (Fig. 4) at Fig. 1 (a1), and the left side is the rear side of ground brush 19 (Fig. 4).

The both sides of recess 64c are divided by the 64b of wall portion, 64b, and the front side has opening 64d above safety device main body 52.That is, this recess 64c forms in the mode that deep becomes the rear downside of safety device main body 52.

In addition, this recess 64c constitutes, even under the state that safety device main body 52 is farthest rotated, opening 64d also becomes not the state (Fig. 1 (b2)) towards the below, and under the normal up and down state of ground brush 19 (Fig. 4), be not subjected to the influence of the rotation of safety device main body 52, hammer 53 is not forwards jumped out from recess 64c.

Each 64b of wall portion for example constitutes with the cardinal extremity of arm portions main body 64a and the mode of front end as shown in Figure 2.In addition, the interval of the 64b of wall portion, 64b is set greatlyyer than the diameter of hammer 53, and the hammer 53 in the restriction recess 64c is moving of two side directions to the left and right.In other words, recess 64c prevent to hammer into shape 53 to the left and right direction avoid.In addition, on each 64b of wall portion, form porose 64e with type of incision respectively.

Each 64e of the hole portion for example draw direction when safety device main body 52 is shaped forms, thereby realizes the lightweight of safety device main body 52.In addition, the size of the 64e of these hole portions is set at hammer 53 and can not outwards moves from recess 64c by the 64e of these hole portions.

In addition, the shape of the 64e of these hole portions can be set arbitrarily, and is not only kerf, forms poroid also can that is arranged in the 64b of wall portion.In addition, the 64e of these hole portions is not essential structure.

As shown in Figure 3, lid 65 has and covers safety device with the cap 65a of peristome 68 (Fig. 4) with at the guide portion 65b of the integrally formed conduct restriction portion of the sidepiece of this cap 65a.And, this lid 65 by lower casing 41 and upper casing 42 (Fig. 5) from gripping up and down.

On the top of cap 65a, be formed with a plurality of supporting teat 65c that are used to support the baseplate part 55 of control part 51.

Guide portion 65b is used to divide the division flank that arm 64 is positioned at inner arm resettlement section 69, forms the roughly U word shape of front openings when overlooking.In addition, the width dimensions of this guide portion 65b forms greatlyyer than the width dimensions of arm 64.

Torsion spring 66 suppresses safety device main body 52 to following direction, promptly, roller 62 from safety device with peristome 68 (Fig. 4) outstanding direction, i.e. the direction left from the contact point arm 56b of switch 56 of contact site 61, the in other words direction of leaving from switch main body 56a for contact point arm 56b.

And, as shown in Figure 1, hammer 53 is to form spherical not shown core as neutron by the metal that for example the iron geometric ratio is great, periphery at this core, elastomeric element injection moldings such as silicon rubber are the specific thickness about 1.0mm～1.5mm for example, thus, the roughly whole sphere-like that coats by elastomeric element that forms of the outer peripheral face of core.

Therefore,, that is, make under suction inlet 33 (Fig. 4) and the opposed state of ground F side to the state shown in Fig. 1 (b2) at normal up and down Fig. 1 (a1) of housing 31, hammer 53 has the weight of regulation, thereby is not easy to jump out to the outside of this recess 64c from the opening 64d of recess 64c.

In addition, as shown in Figure 3 and Figure 4, hammer 53 constitutes, and the outstanding W of wall portion that prevents in the place ahead by being positioned at arm 64 can forwards not jump out because of vibration waits.

Next, the action to an above-mentioned embodiment describes.

When cleaning, dust collecting part is installed on the main body dust storage chamber of scavenging machine main body 13 shown in Figure 5, mains cord is connected in socket etc., thereby can be to electric blower 27 power supplies, under this state, operator's operating and setting button 22, thus the control circuit in the dust scrubber main body 13 drives electric blower 27.

The operator controls handle part 21 and makes ground brush 19 front and back and advance by ground being brushed 19 mountings on ground F (Fig. 1), and thus, the effect of the negative pressure by electric blower 27 sucks air and dust from suction inlet 33 (Fig. 4).This inhaled air becomes suction wind, via the main body dust storage chamber that tube connector 32, prolongation pipe 18, hose body 16 and tube connector portion 15 are drawn into scavenging machine main body 13, catches and collect dust by the dust collecting part in this main body dust storage chamber with dust.And, the suction wind of catching and collect this dust is inhaled into the suction side of the indoor electric blower of electric blower 27, in this electric blower 27 cooling and pass through, become exhaust wind, be discharged to the outside of scavenging machine main body 13 from the steam vent of scavenging machine main body 13.

In addition, the operator when for example cleaning ground F such as flannelette blanket, operating and setting button 22 also make rotating brush 34 suitably rotation drive.

, shown in Fig. 1 (a1), ground brush 19 (Fig. 4) are left under the state of (come-up) from ground F here, by suppressing of torsion spring 66 (Fig. 2), safety device main body 52 becomes the state that rotates to the outstanding mode in the below of housing 31 with roller 62.

At this moment, the contact site 61 of safety device main body 52 leaves from the contact point arm 56b of switch 56, and contact point arm 56b leaves from switch main body 56a, and switch 56 is opened.Therefore, even operating and setting button 22 (Fig. 5) rotating brush 34 (Fig. 4) do not rotate yet.In addition, shown in Fig. 1 (a2), beat 53 states that become the deep in the recess 64c that is housed in arm 64.

Next, shown in Fig. 1 (b1), when being positioned in ground brush 19 (Fig. 4) on the F of ground, roller 62 kiss the earth F, weight by ground brush 19 (Fig. 4), safety device main body 52 overcomes suppressing of torsion spring 66 (Fig. 2) and rearward rotates, and thus, roller 62 enters safety device with in the peristome 68 (Fig. 4).

In addition, contact site 61 is pressed into the front of the contact point arm 56b of switch 56 switch main body 56a side and makes its rotation, thus, and switch 56 closures.Consequently, can be from power supply to motor 35 power supplies.

And, selecting flannelette blanket etc. to need the rotation of rotating brush 34 (Fig. 4) to drive under the state of the situation of cleaning ground by the condition selector switch, when operator's operating and setting button 22 (Fig. 5), the motor control circuit of control part 51 (Fig. 3) drives motor 35 rotations, belt 48 (Fig. 4) is delivered to bearing 47 with the rotation driving of this motor 35, thus, rotating brush 34 (Fig. 4) rotation.

At this moment, shown in Fig. 1 (b2), arm 64 remains at hammer 53 under the state in deep of recess 64c, with safety device main body 52 unitary rotation.

Consequently, by the rotation of rotating brush shown in Figure 4 34, the dust that enters ground F (Fig. 1) is scanned out by cleaning part 46, sucks successively from suction inlet 33.In addition, the direction of rotation of rotating brush 34 can be set arbitrarily.

In addition, shown in Fig. 1 (c2), under the state that the housing 31 of ground brush 19 (Fig. 4) turns upside down, promptly, in the mode that the lower surface 41a with lower casing 41 is positioned at upside ground brush 19 (Fig. 4) are reversed under the state of (turning over) up and down, the opening 64d of the recess 64c of arm 64 is towards the below.

Consequently, the hammer 53 that is contained in the recess 64c is jumped out to the outside of recess 64c from this opening 64d, with the opposed position of front of the arm main body 64a of arm 64, remain on as the upper end of the projection 70 of maintaining part and the action by limiting wall portion 71 restriction hammers 53.

Like this, because the leading section of arm main body 64a is connected to hammer 53, the rotation of safety device main body 52 is prevented from, therefore, the operator can not be pressed into the roller 62 shown in Fig. 1 (c1), and therefore, (Fig. 1 (c1)) is not closed for switch 56, to motor 35 (Fig. 4) power supply, the rotation of rotating brush 34 (Fig. 4) is not prevented from.Consequently, under the state that ground brush 19 (Fig. 4) are reversed up and down, can prevent to make rotating brush 34 (Fig. 4) to rotate mistakenly.

When cleaning finished, the operator is operating and setting button 22 (Fig. 5) suitably, thereby the rotation of rotating brush 34 and the driving of electric blower 27 (Fig. 5) are stopped respectively.

As mentioned above, according to an above-mentioned embodiment, form the 64b of wall portion by both sides at the recess 64c of the arm 64 of safety device main body 52, can structurally guarantee the intensity of the arm 64 of safety device main body 52, so, the material of arm 64 (safety device main body 52) be not as in the past for to comprise the hard materials such as synthetic resin of glass fibre, and can be the material that hardness (intensity) relatively reduces.

Consequently, can suppress following noise, promptly, for example under the state that housing 31 is turned upside down, the hammer 53 outstanding from recess 64c contacts the noise that is produced with the leading section of the arm main body 64a of arm 64, and, under the state that housing 31 (ground brush 19 (Fig. 4)) is lifted from ground F or with housing 31 (ground brush 19 (Fig. 4)) mounting under states such as ground F, hammer 53 contacts the noise that is produced with the arm 64 and 64b of wall portion etc.

Promptly, when hammer 53 is being jumped out and when stoping the rotation of safety device main body 52 upward from recess 64c under the normal up and down state of housing 31, owing to might become non-rotary state with the irrelevant rotating brush 34 (Fig. 4) of common user mode, so the heavy metals of hammer 53 needs uses etc. are not so that can jump out.

In addition, arm 64 is owing to form recess 64c, become bending and more carefully form, and on the other hand, for the rotation of prevention rotating brush 34 (Fig. 4) under the state that housing 31 reverse up and down, need contact with above-mentioned heavy hammer 53, therefore, in order to contact and not damaged with hammer 53, arm 64 needs intensity, in structure in the past, it needs the big relatively material of working strength.

Therefore, in structure in the past, because the arm 64 of hard and 53 collisions of heavy hammer, thereby produced the impact sound of metal.

Therefore, in the present embodiment, make arm 64 become the case shape and structurally strengthen by the 64b of wall portion, thus, as the material that constitutes arm 64, can use the hardness ratio materials with smaller, and, because arm 64 is become than ninor feature, so, can dwindle hammer 53, therefore, can reduce arm 64 and hammer 53 noises when contacting into shape.

In addition, in structure in the past, lid 65 is divided the arm resettlement section 69 of accommodating arm 64, hammer 53 is limited by the guide portion 65b of above-mentioned lid 65 to the moving of two sides of arm 64, relative with it, in the present embodiment, the 64b of wall portion, 64b by arm 64 self limit.

Cause that for the rotation that makes safety device main body 52 is unlikely guide portion 65b contacts with arm 64, this guide portion 65b needs predetermined gap with respect to this wall portion 64, therefore, in existing structure, with hammer 53 to the left and right the movable amplitude of direction be made as the width dimensions of guide portion 65b, relative with it, in the present embodiment, make hammer 53 to the left and right the movable amplitude of direction become size between the 64b of wall portion, 64b, therefore, can make the movable amplitude of direction to the left and right of hammer 53 littler.

Therefore, can suppress to hammer into shape 53 collisions when contacting, in addition, can further suppress to follow this contact and the noise that produces with arm 64.

In addition, be formed at arm 64, can suppress the vibration with the arm 64 of hammer 53 when contacting self, thereby further reduce noise by making the 64b of wall portion, 64b.

In addition, as hammer 53, by using metal spheroid, even size reduces also can access enough proportion.

And, by coat to support with elastomeric element hammer 53 around, can further suppress to hammer into shape the noise of 53 generations when contact with the arm 64 of safe body 52.

In addition, in an above-mentioned embodiment, the form that safety device main body 52 is not limited only to rotate, so long as contact with ground F and at least a portion moves by a part, thereby structure that can Closing Switch 56 then can be arbitrary structures.

In addition, as hammer 53,, also can not use metal as long as can access enough proportion.

Claims (4)

1. section port body is characterized in that having:

Housing has the suction inlet at the lower surface opening;

Rotary cleaning body can be disposed in the above-mentioned suction inlet rotatably;

Motor is rotated driving to above-mentioned rotary cleaning body; And,

Safety device, can the downside of above-mentioned housing with below the state that contacted of swept surface under, to the said motor power supply, and, the downside of above-mentioned housing from below the state that left of swept surface under, cut off power supply to said motor,

Above-mentioned safety device has:

The switch of often opening is connected between mains side and the said motor side;

The safety device main body, by with the contacting of above-mentioned swept surface, at least a portion of this safety device main body moves, closed thus above-mentioned switch;

Arm is arranged at this safety device main body; And,

The hammer of sphere-like can stop moving of above-mentioned safety device main body,

Above-mentioned arm has:

The arm main body;

Recess is formed at above-mentioned arm main body, and movably accommodates above-mentioned hammer; And,

Wall portion is integrally formed in the both sides of above-mentioned recess,

Above-mentioned hammer is by contacting above-mentioned arm from above-mentioned recess to outside side shifting under the state that turns upside down of above-mentioned housing, thereby stops moving of above-mentioned safety device main body.

2. section port body as claimed in claim 1 is characterized in that, above-mentioned hammer is a Metal Ball.

3. section port body as claimed in claim 2 is characterized in that, is coated support by elastomeric element around the above-mentioned hammer.

4. electric vacuum cleaner is characterized in that having:

Accommodate the scavenging machine main body of electric blower; And,

Can with any described section port body in the claim 1 to 3 that the suction side of above-mentioned electric blower is communicated with.

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