JP5696611B2 - Floor suction tool and electric vacuum cleaner using the floor suction tool - Google Patents

Description

  The present invention relates to a floor surface suction tool having a rotating brush that sweeps out dust from a surface to be cleaned, and a vacuum cleaner using the floor surface suction tool.

Conventionally, in a floor suction tool used in a vacuum cleaner having a rotating brush that contacts a surface to be cleaned and scrapes dust, the rotating brush is attached to and detached from the side of the case constituting the outer surface of the floor suction tool. There is also a case in which a dust opening is provided in the opening.
When such a floor surface suction tool removes a rotating brush from a case, since a dust remover peels off the dust adhering to a rotating brush, it can remove dust from a rotating brush (for example, patent document 1).

Japanese Patent Laid-Open No. 62-217930

However, since the floor surface suction tool described in Patent Document 1 is configured so that the rotating brush passes through the inside of the dust removing body provided in the opening formed on the side surface of the case, the rotating brush is separated from the surface to be cleaned. Therefore, in order to scrape out dust on the surface to be cleaned, the length of the brush provided on the outer peripheral surface of the rotating brush must be increased.
In this way, the length of the brush becomes longer, so that when the surface to be cleaned comes into contact with the brush, the stiffness of the brush becomes weaker, and the force (operation to advance the floor surface suction tool generated by the rotation of the brush in contact with the floor surface forward) Force) becomes small, and the feeling of operation when moving the floor suction tool on the surface to be cleaned becomes heavy.
In addition, since the rotating brush is attached to and detached from the case through the dust remover, there is a problem that the pulling force of the rotating brush becomes heavy when the length and number of brushes are increased.

  SUMMARY OF THE INVENTION The present invention solves the above problems, and an object of the present invention is to provide a floor surface suction tool that can remove dust adhering to a rotating brush and has a light operating force.

In order to solve the problem, in the floor surface suction tool, an outer case, a rotating brush rotatably provided inside the case, a dust removing tool for removing dust attached to the rotating brush, and the case a driving unit for a being that rotating brushes arranged rotationally driven in, the case, the rotary brush with respect to the case interior, and an opening for mounting or removal, dust removal for rotatably holding the dust remover A tool mounting portion is formed, a plurality of grooves extending in the longitudinal direction are formed in the rotary brush, and a brush is provided between adjacent grooves. The dust removing tool includes a ring portion and one end of the ring portion . surrounding a claw portion projecting from the side, an engaging portion which is rotatably engaged to the dust remover mounting portion formed at the other end of the ring portion, the ring portion between the claw portion and the engagement portion Can contact the surface to be cleaned The rotating brush is attached to the inside of the case by being inserted into the opening from the end, and is removed from the inside of the case by being pulled out from the opening in the longitudinal direction, and the rotating brush is attached to the case. In this state, the dust removing tool is configured such that the claw portion is fitted in the groove and the rotating brush penetrates the opening of the ring portion.

  According to the present invention, dust attached to the rotating brush can be easily removed, and at the same time as the rotating brush rotates, the wheel portion provided on the dust removing tool rotates and the force to scratch the floor surface increases. The operating force of the suction tool is reduced, and the user's cleaning load can be reduced.

Overall appearance of a vacuum cleaner using a floor suction tool according to the present invention The perspective view which looked at the floor surface suction tool S from the front 2 is an exploded perspective view of FIG. The perspective view which looked at floor surface suction tool S from the lower part 4 is a perspective view showing a process of attaching and detaching the rotating brush. Sectional view cut at a position parallel to the lower surface of the case 40 and passing through the center of the rotating brush The perspective view which shows the combined state of the rotating brush 60 and the dust removal tool 43. 2 is a cross-sectional view taken along the line XX in FIG. 2 (a cross-sectional view of the front of the floor suction tool viewed from the front (with a rotating brush attached)). Enlarged view around the dust removal unit in FIG. Dust remover top view Dust remover side cross-sectional view

Embodiments will be described with reference to the drawings.
FIG. 1 is an overall external view of a vacuum cleaner C according to the present embodiment.
The vacuum cleaner C includes a vacuum cleaner main body 10, a hose 20 connected to the vacuum cleaner main body 10, a gripping portion 21 for operating an operation mode of the vacuum cleaner provided at the tip of the hose 20, Dust is removed from a hand operating part 21 a provided in the gripping part 21, an extendable pipe 30 connected to a pipe forming the gripping part 21, and a surface G to be cleaned connected to the extension pipe 30. A floor surface suction tool S for suction is provided.

  The electric vacuum cleaner C configured in this way has a surface to be cleaned G from a suction port that opens to the floor surface suction tool S by a suction force generated by an electric blower (not shown) mounted on the vacuum cleaner body 10. The dust is sucked and conveyed through the extension pipe 30 and the hose 20 to a dust collecting part (not shown) provided in the cleaner body 10.

Next, the floor suction tool S will be described mainly with reference to FIGS.
The floor suction tool S includes an outer case 40, a pipe-like connecting portion 50 connected to an extension pipe 30 that is rotatably provided at the center of the rear portion of the case 40, and a casing 40. The rotary brush 60 scrapes off dust adhering to the cleaning surface G and improves the dust collection performance, and a motor unit 70 which is a power unit (drive unit) for obtaining the rotational drive force of the rotary brush 60.
In addition, although there exist some which drive a rotary brush using the turbine which utilizes the airflow which arises by attraction | suction force about a motive power apparatus, in this Embodiment, it demonstrates as what uses an electric motor.

Hereinafter, each part of the floor suction tool S will be described in detail.
First, the rotating brush 60 has a plurality of spiral grooves 60b formed on the outer periphery of a body shaft 60a into which a rod-shaped shaft 60g serving as a rotating shaft of the rotating brush 60 is inserted, and adjacent grooves. In between, the brush 60c is provided spirally toward the outer side of the rotating brush.
In the drawing, the brush 60c uses a strip-like one made of a flexible resin or the like, but may be a hair-like one extending outward of the rotating brush.

A recess 60d is formed at one end of the body shaft 60a. The drive-side mounting guide 73 that transmits a driving force from a motor unit 70 (described later) to the rotating brush 60 is fitted and engaged therewith. A groove 60j that is parallel to the shaft 60g is formed in the recess 60d.
The groove 60j (not shown) is engaged when an engaging portion 73a formed in a driving side mounting guide 73, which will be described later, enters the recess 60d inward from the axial direction of the shaft 60g. This is a detent structure for preventing the recess 60d from spinning freely against rotation of 73.

  At the other end of the rotating brush 60, a fixing knob 60h for fixing the rotating brush so as not to be detached from the case 40 in a state where the rotating brush is disposed inside the case 40 is rotatably attached to the shaft 60g (main body shaft 60a). ing. The fixed knob 60h is provided with a convex fixed-side mounting guide 60i that protrudes outward with respect to the rotational direction of the shaft 60g.

Next, the case 40 includes a substantially box-shaped lower case 41 that forms the lower outer side of the floor suction tool S, a substantially box-shaped upper case 42 that forms the upper side of the outer shell, and an upper cover 43 that is integrated with the upper case 42. The lower case 41 and the upper case 42 are vertically combined.
A lower case cover 48 is provided at each of the left end and the right end of the lower surface of the lower case 41.

The lower case 41 serving as the bottom of the case 40 is formed with a suction port 41a that opens in the longitudinal direction for sucking dust from the surface G to be cleaned.
A rotary brush storage chamber 40a in which the rotary brush 60 is stored is formed between the suction port 41a and the lower case 41 by securing a predetermined space. That is, the suction opening 41a is opened in the rotating brush storage chamber 40a.

  A dust collecting air passage 45 communicating with the connecting portion 50 is formed by the upper case 42 and the lower case 41 at the rear of the rotating brush storage chamber 40a, that is, in the downstream direction of the sucked airflow. The dust collection air passage 45 is an air passage through which the airflow mixed with the dust sucked from the suction port 41 a flows down toward the connecting portion 50, that is, from the case 40 toward the extension pipe 30.

Next, in the center of the rear portion of the case 40, a connection portion attachment port 40d is formed, which is an opening to which the connection portion 50 is attached so as to be rotatable.
This connection portion attachment port 40d forms a notch in the center of the rear part of the lower case 41 and the upper case 42, respectively, and when the lower case 41 and the upper case 42 are combined vertically, these notches are combined. An opening is formed.

Next, a drive unit mounting opening 40b is formed inside one side wall of the case 40, and a drive side mounting guide 73 and a motor unit 70 described later are provided. The engaging portion 73 a of the drive side mounting guide 73 is provided in the case 40 toward the inside of the case 40.
A rotating brush mounting opening 40 c for attaching and detaching a rotating brush 60 (described later) to the inside of the case 40 is formed on the other side wall of the case 40.
The rotating brush mounting opening 40c is an opening through which the rotating brush 60 can be inserted into the rotating brush storage chamber 40a. At the position where the convex fixed side mounting guide 60i formed in the fixing knob 60 of the rotating brush 60 enters, It is a substantially circular shape in which a concave shape is formed.

That is, the fixed-side mounting guide 60i is enters the concave rotary brush mounting opening 40c, by rotating the locking knob 60h, the concave portion of the stationary side mounting guide 60 i rotary brush mounting opening 40c, the rotation The rotating brush 60 is fixed to the case 40 by shifting from the mounting direction of the brush 60.

Since the fixing knob 60h is rotatable with respect to the main body shaft 60a, the main body shaft 60a is rotatably attached to the case 40.
Further, the rotary brush mounting opening 40c is formed with notches having a combination of a semicircular shape and a concave shape on the side walls of the lower case 41 and the lower case cover 48, and the lower case 41 and the lower case cover 48 are formed. These openings are formed by combining these notches when they are combined vertically.

Next, the drive-side mounting guide 73 is in contact with the surface G to be cleaned to improve the operational feeling of the floor suction tool S, the pulley 73c that transmits the rotational driving force of the motor 70, and the wheel 73b. Engagement portions 73a that integrally project from the portion serving as the rotation center toward the rotation axis are integrally formed so that the rotation centers are coaxial.
The engaging portion 73a is formed with a portion that protrudes in the radial direction from the center of rotation in order to eliminate a shift in the rotating direction when engaged by entering the recess 60d of the rotating brush 60.
The outer peripheral portion of the wheel portion 73b is made of a soft material or a felt material so that the wheel portion 73b grips the surface to be cleaned with an appropriate frictional force when traveling on the surface to be cleaned.

Further, the maximum outer diameter (including the felt material 46f and the soft material) of the wheel portion 73b may be configured to be approximately the same as the maximum outer diameter (including the brush 60c) of the rotating brush 60, and a wheel portion 46f described later. And the outer shape are equal.
In addition, a belt 70 a that transmits the rotational driving force of the motor unit 70 provided inside the case 40 is hung on the pulley unit 73 c.

Next, referring to FIGS. 6 to 11, hair or the like attached to the rotary brush 60 is placed inside the suction port 41 a and on the end side of the rotary brush storage chamber 40 a on the rotary brush mounting opening 40 c side. A dust removing tool mounting portion 44, which will be described later, is a part that houses the dust removing tool 46, which is a ring shape to be removed, rotatably in the circumferential direction of the ring shape.
The dust removing tool 46 includes a ring portion 46a having a circular outer shape, a claw portion 46b protruding in a direction in which the ring portion 46a opens, and a wheel portion 46d formed so as to surround the ring outer periphery of the ring portion 46a. Have

The wheel portion 46d is configured to contact the surface to be cleaned in a state where the dust removing tool 46 is attached to the case 40. Further, the ring opening 46e of the ring portion 46a has a size that allows the rotary brush 60 to pass therethrough.
Further, the ring portion 46a is formed with a convex portion 46g that protrudes to the outer peripheral surface. This convex part 46g is formed over the outer peripheral surface of the ring part 46a.

Here, the wheel portion 46d, the ring portion 46a, and the claw portion 46b are formed of different members, and the wheel portion 46d is sandwiched between the ring portion 46a and the claw portion 46b and is ultrasonically fixed.
That is, in the dust remover 46, when the rotary brush 60 is attached to and detached from the case 40, the ring part 46a and the claw part 46b, which are parts that come into contact with the rotary brush 60, have a good slidability material (for example By using POM), the dust removing tool 46 can be easily attached and detached.

Moreover, the felt part 46f can be adhere | attached on the outer peripheral part of the wheel part 46d by using the material (for example, ABS resin etc.) which can use an adhesive material for the wheel part 46d.
Accordingly, when the wheel portion 46d travels on the surface to be cleaned, the felt material 46f grips the surface to be cleaned and does not damage the surface to be cleaned.

The material used for the wheel unit 46 d, the wheel portion 46 d is good if the grip on the surface to be cleaned is not limited only to the felt material 46f, it may be constituted by a soft material at the double molding.
The size of the maximum outer diameter of the wheel portion 46 d (including the felt material 46f and the soft material), may be configured to the same extent as the magnitude of the maximum outer diameter of the rotary brush 60 (including a brush 60c).

Next, the number of claw portions 46b of the dust remover 46 is the same as the number of spiral grooves 60b of the rotating brush 60 described later, and in the present embodiment, the ring portions 46a are equally spaced. Four claw portions 46b are formed.
Further, the claw portion 46b is formed in a shape in which the tip 46c is narrowed, and is directed in a substantially right angle direction with respect to the circumferential direction of the ring portion 46a.
In the state where the ring part 46a is attached to the dust removing tool attaching part 44, the direction in which the claw part 46b stands is such that the tip 46c faces the direction of the drive part mounting opening 40b.

Next, in the dust removing tool mounting portion 44, the concave portion 41 b formed on the semi-cylindrical wall surface of the lower case 41 and the concave portion 48 b formed on the semi-cylindrical wall surface of the lower case cover 48 face each other. It is constituted by.
That is, the dust remover attachment portion 44 is a ring-shaped recess that is recessed outwardly on the cylindrical inner wall surface formed by the lower case 41 and the lower case cover 48 facing each other.

The convex portion 46g formed on the ring portion 46a of the dust removing tool 46 enters and engages the inside of the dust removing portion mounting portion 44 formed in a concave shape in this manner, thereby removing dust from the case 40. A tool 46 is rotatably attached (see FIG. 9).
Note that the direction in which the dust removing tool 40 can rotate matches the rotation direction of the rotating brush. Further, the opening of the ring part 46a, the engaging part 73a of the driving side mounting guide 73, the driving part mounting opening 40b, and the rotating brush mounting opening 40c are located on substantially the same axis.

Next, attachment / detachment of the rotating brush 60 from the inside of the case 40 will be described.
(1) Attaching the rotating brush 60 First, the rotating brush 60 is inserted into the rotating brush mounting opening 40c from the end on the side where the recess 60d is formed.
At this time, the rotating brush 60 is inserted into the ring opening 46e of the ring portion 46a of the dust removing tool 46, and the claw portions 46b of the ring portion 46a are fitted in the grooves 60b of the rotating brush 60 ( the claw portion 46b is in a state) that is guided by the groove 60 b. That is, the rotating brush 60 penetrates the dust removing tool 46 in a state where the claw portion 46b is fitted in the groove 60b (see FIG. 5).
When the rotating brush 60 is inserted into the ring portion 46a, the brush 60c passes through the ring portion 46a while being bent, and proceeds in the direction of the drive side mounting guide 73.

The rotary brush 60 toward the driving side mounting guide 73, when it is further inserted, while the claw portions 46b in contact with the 60 to the rotary brush, following the groove 60 b formed in a spiral shape, a rotary brush 60 The dust removing tool 46 rotates inside the dust removing tool mounting portion 44 without countering the insertion operation.
Since the claw portion 46b is formed with the tip directed in the direction in which the drive portion mounting opening 40b is located (inward of the case 40), the claw portion 46b is large when the rotary brush 60 is mounted in the rotary brush storage chamber 40a. Does not become resistance.

Next, the rotating brush 60 is inserted to the position of the driving side mounting guide 73 of the driving unit 70, so that the engaging portion 73a formed on the driving side mounting guide 73 is fitted into the recess 60d. At this time, the engaging portion 73a enters the groove 60j formed inside the recess 60d from the axial direction, and is held in the rotational driving direction of the driving side mounting guide 73 in the groove 60j, so that the driving side mounting guide 73 is provided. The idling of the recess 60d is prevented.
Further, when the engaging portion 73a enters the groove 60j from the axial direction, the engaging portion 73a is configured in an arc shape, so that it is difficult to be caught on the wall surface forming the groove 60j and can be efficiently mounted.

In the state where the driving side mounting guide 73 is fitted in the recess 60d, the fixing knob 6
The fixed side mounting guide 60i formed 0h, inserted from the cutout portion formed in the rotary brush mounting opening 40c concave shape, by rotating the fixed side mounting guide 60 i, the mounting guide 60 i is rotary brush It is fixed to the mounting opening 40c and cannot be removed, and the rotary brush 60 is prevented from falling off from the case 40.
Thus, the rotating brush 60 is correctly attached to the rotating brush storage chamber 40a.

In the state where the rotating brush 60 is attached to the rotating brush storage chamber 40a, the dust removing tool 46 is in a position facing the outer peripheral surface of the rotating brush 60, and the claw portion 46b follows the groove portion 60b of the rotating brush. Hold and rotate with the rotating brush.
In this way, if the claw portion 46b is held in a state following the groove portion 60b, it is necessary to realign the positions of the claw portion 46b and the groove portion 60b when the rotary brush 60 is removed from the floor suction tool (when removed). Absent.
As described above, the rotating brush 60 passes through the rotating brush mounting opening 40c and the ring opening 46e of the dust removing tool 46, and fits into the driving side mounting guide 73 desired for the driving unit mounting opening 40b.

(2) First, the removal from the casing 40 of the rotary brush 60 to rotate the stationary side mounting guide 60 i, combined concave cutout and the position of the rotary brush mounting opening 40c, the fixed-side mounting and the rotary brush mounting opening 40c to release the guide 60 i, by pulling the stationary side mounting guide 60 i in the longitudinal direction of the rotary brush 60 can be withdrawn from the rotary brush mounting opening 40c of the rotary brush 60 from the case 40.
When the rotary brush 60 starts to be withdrawn from the case 40, following the grooves 60 b of the claw portion 46b is formed in a spiral shape, without defying the withdrawal operation of the rotary brush 60 and rotates inside the dust remover attachment portion 44 .

At this time, by the claw portion 46b is to follow the groove 60 b, the dust such as hair and lint tangled on the outer periphery of the rotary brush 60, the claw portion 46b is peeled off from the shaft and the brush.
And the dust peeled off from the outer periphery of the rotating brush 60 and attached to the rotating brush 60 is separated from the rotating brush 60 when the rotating brush 60 passes through the ring part 46a and the claw part 46b of the dust removing tool 46. -Removed.

Since the dust remover mounting portion 44 is located inside the case 40 on the side close to the rotary brush mounting opening 40c, the rotary brush 60 is attached to the ring of the dust remover 46 when the rotary brush 60 is removed from the case 40. It will pass through the opening 46e.
Accordingly, dust can be efficiently removed from the rotating brush 60.

As described above, by providing the wheel portion 46 d in the dust removing device 46, thereby enabling easy removal of dust attached to the rotating brush, a wheel portion provided on the dust remover simultaneously rotation of the rotary brush rotates Since the force for scratching the floor surface increases, the operation force of the floor surface suction tool becomes lighter, and the cleaning load on the user can be reduced.
In particular, since the wheel part 46 d is formed integrally with the dust removing tool 46, it is not necessary to separately provide the dust removing tool 46 and the wheel part 46 d in the case 40. That is, it is possible to reduce the number of parts and assembly man-hours during manufacturing.

Moreover, since the wheel part 46d is integral with the dust removal tool 46, when it is attached to the case 40, the installation space can be minimized. Thereby, the space of a suction inlet and a rotating brush can be expanded, and dust collection capability can be improved.
Further, by providing the wheel side 73b also on the drive side mounting guide 73, the wheels transmit the driving force to the surface to be cleaned so as to be even at the left and right ends of the case 40, so that the floor surface suction The tool S can be stably moved on the surface to be cleaned.

Furthermore, the wheel unit 46 d is so rotated together with the rotation of the rotary brush 60, it does not require a driving source for rotationally driving the additional wheel portion 46 d.
Further, by constituting the outermost wheel portion 46 d in the felt material, when the upper surface to be cleaned the wheel portion 46d travels, constituting not to damage to the slip and the surface to be cleaned of the wheel portion 46 d be able to.

Further, the outermost portion of the wheel portion 46 d, by constituting a soft member using a double molding, when the wheel portion 46d on the surface to be cleaned travels, grip the wheel portion 46 d and the surface to be cleaned it is possible to configure not to scratch the improvement and the surface to be cleaned, it is possible to easily perform the forming of the wheel portion 46 d.
Further, by configuring the outer diameter of the wheel portion to be approximately the same as the maximum outer diameter of the rotating brush 60 (including the brush 60c), the brush 60c can be used when the floor suction tool is placed on the surface to be cleaned. Since it can be used without greatly deforming, the operational feeling when moving the floor suction tool can be lightened.

C vacuum cleaner 10 main body, 20 hose, 21 gripping part, 21a hand operation part, 30 extension pipe S floor suction tool, 40 case, 40a rotating brush storage room,
40d connection part attachment port, 41 lower case, 41a suction port, 42 upper case,
43 upper cover, 45 dust collecting air passage, 46 dust removing tool, 48 lower case cover 50 connecting portion, 60 rotating brush, 60 g shaft, 60 a body shaft,
60b spiral groove, 60c brush, 60h fixing knob,
60i Fixed side mounting guide, 70 Motor part (driving part), 73 Driving side mounting guide

Claims (5)

An outer case, a rotating brush rotatably provided inside the case, a dust removing tool for removing dust adhering to the rotating brush, and a drive unit for rotationally driving the rotating brush provided in the case. And
The case is formed with an opening for attaching or removing the rotary brush to or from the inside of the case, and a dust remover attaching portion for rotatably holding the dust remover,
The rotating brush has a plurality of grooves extending in the longitudinal direction, and a brush is provided between the adjacent grooves,
The dust remover includes a ring part, a claw part protruding from one end side of the ring part, and an engaging part formed on the other end side of the ring part and rotatably engaged with the dust remover attachment part And a wheel part that can contact a surface to be cleaned formed so as to surround the ring part between the claw part and the engaging part ,
The rotating brush is attached to the inside of the case by being inserted into the opening from the end, and is removed from the inside of the case by being pulled out from the opening in a longitudinal direction.
In the state in which the rotating brush is attached to the case, the dust removing tool is in a state in which the claw portion is fitted in the groove and the rotating brush penetrates the opening of the ring portion. Surface suction tool.   The floor surface suction tool according to claim 1, wherein the outermost portion of the wheel portion is configured by providing a felt material.   The floor surface suction tool according to claim 1, wherein the outermost part of the wheel part is formed with a soft member by double molding. The size of the outermost diameter of the wheel unit, according to any one of claims 1 to 3, characterized in that the size and equal properly the outermost diameter of the rotary brush including said brush Floor suction tool. A vacuum cleaner using the floor suction tool according to any one of claims 1 to 4.

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