JP2023104043A - Cleaning body and rotation cleaning body - Google Patents

Abstract

To provide a cleaning body and a rotation cleaning body capable of suppressing noise when coming into contact with a body to be cleaned, and suppressing winding of a fibrous object to be cleaned.SOLUTION: A cleaning body comprises: a base 110; and a brush 120 where threads are continuous in an arch state in a longitudinal direction of the base 110 and are coupled and extend, and where nap is raised so that the threads cross and overlap in a state in which the threads are obliquely inclined in different directions on front and rear surfaces of the arch. The brush 120 is double-folded along a center in a short direction in a state of being woven in a zigzag state so as to fold the threads, and folded both ends are joined in a deviated state in a longitudinal direction for forming the arch, and the threads overlap without a gap.SELECTED DRAWING: Figure 5

Description

The present invention relates to cleaning bodies and rotating cleaning bodies.

a strip-shaped fluff body in which a plurality of brush threads are held in parallel by a holding thread; a strip-shaped body extending in the longitudinal direction of the fluff body and superimposed on the fluff body; and a substrate having a pair of clamping portions that are joined while clamping one end portion in the width direction of the strip and one end portion in the width direction of the strip (Patent Document 1).

A vacuum cleaner main body, a hose having a hand grip connected to the vacuum cleaner main body, an extension pipe detachably connected at one end to the hose, and a floor connecting portion at the tip of the extension pipe detachably connected. In a vacuum cleaner equipped with a floor suction tool, a partial area from the root to the tip of raised bristles attached to a rotating brush of a floor suction tool with a built-in brush that is rotated by a motor is welded, and a lateral side of the raised bristles is welded. There is also known a connected vacuum cleaner floor suction tool (Patent Document 2).

Japanese Patent Application Laid-Open No. 2019-13728 JP 2009-131305 A

SUMMARY OF THE INVENTION The present invention provides a cleaning body and a rotary cleaning body capable of suppressing noise when it comes into contact with an object to be cleaned and suppressing the winding of a fibrous object to be cleaned.

In order to solve the above problems, the cleaning body according to claim 1 comprises:
a base;
a brush in which threads are continuously connected in the longitudinal direction of the base and are raised so as to cross and overlap each other in a state in which the front surface and the back surface of the arch are inclined in different directions from each other. rice field,
It is characterized by

The invention according to claim 2 is the cleaning body according to claim 1,
The brush is woven in a zigzag so that the thread is folded back, and is folded in two along the central portion in the transverse direction. , overlapping each other without gaps,
It is characterized by

The invention according to claim 3 is the cleaning body according to claim 1 or 2,
The oblique angle of the arch is in the range of 15 degrees to 75 degrees with respect to the longitudinal direction of the cleaning body,
It is characterized by

The invention according to claim 4 is the cleaning body according to any one of claims 1 to 3,
The base end of the brush is held by the base in the longitudinal direction and is fixed by sewing to the base.
It is characterized by

In order to solve the above problems, the rotary cleaning body according to claim 5 is provided with:
a rotating body having grooves formed on its outer peripheral surface;
and the cleaning body according to any one of claims 1 to 4, wherein the base is fitted in the groove and attached.
It is characterized by

ADVANTAGE OF THE INVENTION According to invention of Claim 1, while suppressing the noise at the time of contacting to-be-cleaned body, winding of a fiber-like to-be-cleaned material can be suppressed.

According to the second aspect of the invention, it is possible to suppress the entry of the fibrous material to be cleaned into the brush and to improve the scraping force of the material to be cleaned.

According to the third aspect of the invention, the scraped dust can be moved in the longitudinal direction of the cleaning body.

According to the fourth aspect of the invention, it is possible to suppress the thread from coming off.

According to the fifth aspect of the invention, the function of the cleaning body can be exerted on the body to be cleaned.

It is a bottom schematic diagram showing the cleaner head of the vacuum cleaner to which the rotating cleaning body according to the present embodiment is attached. It is a cross-sectional schematic diagram which shows the use condition of the cleaner head of a vacuum cleaner. It is a perspective view which shows a rotation cleaning body. It is an enlarged cross-sectional schematic diagram of a rotary cleaning body. (a) is a perspective view showing a partial cross section of the cleaning body, and (b) is a side view showing a partial side surface of the cleaning body. It is a plane schematic diagram which shows the manufacturing process of the brush of a cleaning body. It is a figure which shows the structure of the cleaning body of an Example, and the cleaning body of a comparative example. It is a figure which shows the result of a hair entanglement test. It is a figure which shows the result of a pick-up test. It is a figure which shows the result of a noise test.

Next, the present invention will be described in more detail by presenting embodiments and specific examples with reference to the drawings, but the present invention is not limited to these embodiments and specific examples.
In addition, in the explanation using the drawings below, it should be noted that the drawings are schematic, and the ratio of each dimension is different from the actual one. Illustrations other than members are omitted as appropriate.

(1) Vacuum Cleaner Suction Head FIG. 1 is a schematic bottom view showing a vacuum cleaner head 10 of a vacuum cleaner to which a rotating cleaning body 20 according to the present embodiment is attached, and FIG. 3 is a perspective view showing the rotary cleaning body 20, and FIG. 4 is an enlarged sectional schematic view of the rotary cleaning body 20. FIG.
Hereinafter, the cleaner head and the rotating cleaning body will be described with reference to the drawings.

(1) Vacuum Cleaner Suction Head FIG. 1 is a schematic bottom view showing a vacuum cleaner head 10 of a vacuum cleaner to which a rotating cleaning body 20 according to the present embodiment is attached, and FIG. 3 is a perspective view showing the rotary cleaning body 20, and FIG. 4 is an enlarged sectional schematic view of the rotary cleaning body 20. FIG.
Hereinafter, the cleaner head and the rotating cleaning body will be described with reference to the drawings.

(1.1) Overall Configuration of Suction Head As shown in FIGS. 1 and 2, a vacuum cleaner head 10 of a vacuum cleaner for sucking dust such as hair and dust on the floor surface FL has an overall shape of approximately It has a T-shaped case 11 and a connecting pipe 12 rotatably connected to the rear end of the case 11 . A rectangular suction port 13 elongated in the left-right direction is formed at a position near the front end of the bottom wall of the case 11 .

A rectangular frame-shaped partition plate 14 is erected on the inner bottom surface of the case 11 so as to surround the suction port 13, and a rear wall 14a forming the partition plate 14 has a rear wall 14a at its central portion that penetrates the rear wall 14a. An air suction port 15 is formed. A motor bearing 16 is provided on the left inner surface of the case 11 , and the motor bearing 16 rotatably supports the tip of a motor shaft 17 a extending from a motor 17 provided behind the partition plate 14 inside the case 11 .

A rotation support 18 is provided on each of the left and right side walls 14b of the partition plate 14, and the rotation support 18 is rotatably supported by bearings 19 provided on both the left and right inner surfaces of the case 11, respectively. Inside the partition plate 14, a rotary cleaning body 20 having a rotation axis c1 extending in the horizontal direction is accommodated, and both ends of the rotary cleaning body 20 are supported by rotary supports 18, respectively.

A timing belt TB is wound around the left rotary support 18 and a pulley 17b attached to the motor shaft 17a. It is transmitted to the rotary cleaning body 20 via the timing belt TB and the left rotary support 18 .

(1.2) Configuration of Rotating Cleaning Body As shown in FIGS. 3 and 4, the rotating cleaning body 20 includes a rotating body 21 and four cleaning bodies 100 provided in the longitudinal direction (axial direction) of the rotating body 21. and
The rotating body 21 is a substantially round bar-shaped shaft having grooves 22 formed at equal intervals around the periphery. It is formed to extend in the longitudinal direction to the end face.

The cleaning body 100 is attached by fitting its base 110 into the concave groove portion 22 from one end face side of the rotating body 21 . In the rotating cleaning body 20, the brush 120 of the cleaning body 100 comes into contact with the floor FL, which is the body to be cleaned, as the rotating body 21 rotates (indicated by arrow R in the figure) to scrape fibrous dirt and dust. The brush 120 exhibits a picking function and suppresses an increase in noise when the brush 120 comes into contact with the floor surface FL.

(2) Cleaning Body FIG. 5(a) is a perspective view showing a partial cross section of the cleaning body 100, (b) is a side view showing a partial side surface of the cleaning body 100, and FIG. It is a plane schematic diagram which shows a process. Hereinafter, the configuration and manufacturing method of the cleaning element 100 will be described with reference to the drawings.

As shown in FIG. 5, the cleaning body 100 includes a base 110 and a string 121 extending continuously in an arch shape in the longitudinal direction (X direction) of the base 110. and a brush 120 raised so as to intersect and overlap while being obliquely inclined. The base end portion of the brush 120 is sandwiched between the base 110 and fixed to the base 110 by sewing.

(2.1) Base Base The base 110 is made of synthetic resin, and has a locking portion 111 having a rectangular cross section for fitting into and fixing to the concave groove portion 22 (see FIG. 4) of the rotating body 21, and a locking portion 111. A pair of L-shaped plate-shaped holding portions 112 formed on the portion 111 are provided.
A pair of holding portions 112 are erected on the locking portion 111 so as to face each other in the width direction of the locking portion 111 .
Distal end portions 112 a of the pair of holding portions 112 are bent at right angles to the proximal end portion and extend parallel to the locking portion 111 . Base end portions 112 b of the pair of holding portions 112 are sewn to the brush 120 with one sewing thread 113 while holding one end portion of the brush 120 in the width direction Y. As shown in FIG.

The base 110 is formed by extruding thermoplastic synthetic resin. Examples of thermoplastic synthetic resins include flexible olefin elastomers having a durometer hardness of D40 to D50 as measured according to JIS K7215. Since the base 110 has flexibility, it can be flexibly bent, and as shown in FIG. It can be easily attached by inserting it into the groove portion 22 .

The locking portion 111 has a width in a direction crossing (perpendicular to) the longitudinal direction of the base 110 slightly larger than the width of the opening 22 a of the recessed groove portion 22 of the rotor 21 . When the cleaning body 100 is attached to the rotating body 21, the base 110 is inserted into each recessed groove 22 from one end of the rotating body 21 so that the brush 120 protrudes outward from the opening 22a of the recessed groove 22. By inserting while sliding, the base 110 is inserted in a helically twisted state along each concave groove 22, and the attachment of the cleaning body 100 to the rotating body 21 is completed.

(2.2) Brush The brush 120, as shown in FIG. 5(b), has a thread 121 that extends continuously in an arch shape, and the front surface 120A and the back surface 120B of the arch are in different directions (FIG. 5(b)). Indicated by arrows R1 and R2), the bristles are raised so as to intersect and overlap each other. The oblique angle Θ of the arch is in the range of 15° to 75° with respect to the longitudinal direction of the cleaning element 100 . Since the arches obliquely incline, intersect and overlap each other, the gaps between the threads are small, and the scraped fibrous material to be cleaned is suppressed from entering the brush 120 and from winding around the brush 120. - 特許庁be able to.

Specifically, as shown in FIG. 6(a), the brush 120 is woven in a zigzag manner so that the thread 121 is folded back, and the central portion C in the transverse direction (indicated by the dashed line CC in FIG. 6(a)). ) are folded in half (see the dashed-dotted line arrow in the figure), and as shown in FIG. , X2) to form arches inclined in different directions on the front surface and the back surface, and overlap each other without a gap.

That is, the brush 120 is configured such that the proximal end portions (on the curved portion 123 side) of the plurality of U-shaped threads 121 arranged in parallel are arranged in two straight lines extending parallel to each other in the direction in which the plurality of threads 121 are arranged side by side. It is formed as a knitted fabric by being held together by holding threads 122 . In addition, as shown in FIG. 5 , in the cleaning body 100 , the two holding threads 122 are arranged between the pair of holding portions 112 .
The holding thread 122 is made of a highly durable and flexible fiber. Fibers satisfying these conditions include rayon fibers, cupra fibers, polyester fibers, polyamide fibers, acrylic fibers, and polypropylene fibers. The holding thread 122 is made of polyester fiber, and may partially contain hot-melt fiber that melts when heated.

The thread 121 forming the brush 120 preferably has a wire diameter of 0.05 mm to 0.5 mm. In particular, by using polyamide or polypropylene filament yarn with a wire diameter of 0.05 mm to 0.2 mm, the cleaning element 100 has a certain degree of flexibility and can suppress noise when it comes into contact with the object to be cleaned. can.
Polyamide-based multifilament yarn (wire diameter per single fiber is 0.09 mm) of cotton count 1900T (decitex)/24F (filament) is used for the yarn 121 in this embodiment. Polyamide fibers are suitable for use in the cleaning element 100 because of their excellent abrasion resistance and resilience.

The thread 121 forming the brush 120 may be made of conductive fiber such as carbon fiber or synthetic resin fiber into which carbon is kneaded.
Static electricity is less likely to accumulate in the conductive thread, and dust and the like scraped or wiped off by the brush 120 is suppressed from adhering to the brush 120 due to static electricity. As a result, for example, dust scraped or wiped off with the brush 120 can be easily released from the brush 120 when the vacuum cleaner sucks the dust.

(2.3) Formation of Cleaning Body When forming the cleaning body 100, first, the thread 121 is woven in a zigzag so as to be folded back between the pair of clamping portions 112 of the base 110, and the center of the width direction is When both ends of the brush 120 folded in two along the portion C are joined while being shifted in the longitudinal direction, and the base end on the side of the holding thread 122 is inserted, the base end of the brush 120 is inserted into the clamping portion 112 . It will be in a state of being sandwiched by
In this state, for example, using an industrial sewing machine (not shown), the clamping portion 112 and the base end portion of the brush 120 including the holding thread 122 are sewn together with the sewing thread 113 so that the clamping portion 112 is attached to the holding thread. It joins to the brush 120 at the part where 122 is located. Thereby, the cleaning body 100 shown in FIG. 5 is obtained.

(3) Operation and Effect of Rotating Cleaning Body When using the vacuum cleaner, as shown in FIG. While being rotationally driven, the air inside the partition plate 14 passes through the air suction port 15 and is sucked into the main body (not shown) of the vacuum cleaner via the connection pipe 12 (see arrow S in the figure).

At this time, the rotating cleaning body 20 rotates counterclockwise in FIG. 2 (the direction indicated by the arrow R in FIG. 2) in conjunction with the rotational driving of the motor 17, and the cleaning body 100 of the rotating cleaning body 20 moves toward the floor surface FL. , the fibrous dirt and dust on the floor FL are scraped off by the cleaning body 100 and sucked into the main body (not shown) of the electric vacuum cleaner together with the air.

At this time, the rotary cleaning body 20 rotates in the direction of arrow R shown in FIG. 121 is also partially in contact.

When the floor surface FL is flooring, the brush 120 can scrape up dust on the flooring, as well as fibrous dust such as hair and lint. sucked into.

When the floor surface FL is a carpet or mat, the brush 120 can be used to scrape dust from the vicinity of the floor surface FL, and to entangle fibrous dust. At this time, some of the fibrous dust may be wound around the rotary cleaning member 20 without being sucked into the air suction port 15. However, the brush 120 has the thread 121 continuously connected in an arch shape, and the surface of the arch is Since the 120A and the back surface 120B are slanted in different directions and overlapped with each other, the gaps between the threads are small, and the scraped fibrous dust is less likely to enter the brush 120. Winding can be suppressed.

In addition, in the brush 120, the thread 121 is continuously connected and extended in an arch shape, and the front surface 120A and the back surface 120B of the arch cross and overlap each other while being obliquely inclined in different directions. The stiffness can be increased without connecting, and the dust pick-up property can be improved.
In addition, even if a relatively small thread 121 with a wire diameter of 0.1 mm is used, for example, it has a certain pick-up property, and even if the tip of the brush 120 comes into contact with the floor FL, it is possible to suppress the generation of noise. .

FIG. 7 is a diagram showing the structure of the cleaning element of the example and the cleaning element of the comparative example, FIG. 8 is a diagram showing the result of the hair entanglement test, FIG. 9 is a diagram showing the result of the pick-up test, and FIG. 10 is the result of the noise test. It is a figure which shows.
Performance evaluations of hair entanglement, pick-up, and noise of examples further embodying the embodiments will be described below in comparison with comparative examples.

(Example)
A polyamide monofilament thread with a thickness of 0.09 mm was used as the thread 121, and the thread 121 was continuously connected in an arch shape and extended in the longitudinal direction (X direction). The cleaning body 100 has a brush 120 having a thread density of 480 F/cm, which is crossed and overlapped in an inclined state, and has a contact amount of 1.0 mm with the floor surface FL when used as a rotary cleaning body. made.
(Comparative example 1)
A polyamide monofilament thread with a thickness of 0.2 mm is used to form a brush 130A having a thread density of 300 F/cm. A cleaning body 100A with a thickness of 0.5 mm was produced.
In addition, the brush 130B is made of carbon fibers having a thickness of 0.001 mm and is raised so that the thread density is 60000 F/cm. A cleaning body 100B with a thickness of 0.5 mm was manufactured.
(Comparative example 2)
A polyamide monofilament thread with a thickness of 0.2 mm is used to form a brush 130C having a thread density of 108 F/cm. A cleaning body 100C with a thickness of 0.5 mm was manufactured.
In addition, a cleaning body 100D was manufactured by forming an extruded blade 130D using a thermoplastic elastomer and having a contact amount with the floor surface FL of 0.5 mm when used as a rotary cleaning body.
The cleaning bodies of Examples and Comparative Examples 1 to 4 were produced, mounted as rotating cleaning bodies in a commercially available electric vacuum cleaner, and subjected to a hair entanglement test, a pick-up test, and a noise test.

"Hair Entanglement Test"
The sample sample as a fibrous object to be cleaned for the hair entanglement test is 100% hair, the sample amount is 0.283 ± 0.005 g, the sample length is 20 to 45 cm, and the test area as the floor surface FL is 303 mm × A flooring wooden board of 1818 mm was used, and the samples were randomly arranged on the wooden board, and the collection rate after collecting all the samples was evaluated as the hair entanglement rate. Here, the hair entanglement rate was defined as the amount of hair (g) remaining in the cleaner head 10 after the test/the amount of hair (g) before the test×100 (%).

FIG. 8 shows the results of the hair entanglement test. According to this, the cleaning element 100 of Example had a hair entanglement rate of 0.1%, the cleaning elements 100A and 100B of Comparative Example 1 had a hair entanglement rate of 49.0%, and the cleaning element 100C of Comparative Example 2 had a hair entanglement rate of 49.0%. , and 100D, the hair entanglement rate was evaluated as 0.8%. That is, it was confirmed that hair entanglement hardly occurred in the cleaning element 100 of the example.

"Pickup test"
In the pick-up test, according to JIS C 9108 (2017), the material samples shown in FIG. Pickup performance was evaluated by measuring the number of material samples.

FIG. 9(b) shows the results of the pick-up test. According to this, for silica sand (dust with a small particle size), there was no difference in the pickup rate of 95% or more.
Resin pellets (dust with a large particle size) were 88.9% in Example, 93.6% in Comparative Example 1, and 91.0% in Comparative Example 2, resulting in a slightly lower pickup in Example. rice field. Regarding lint, lint entanglement occurred in Comparative Example 1.

"Noise test"
In the noise test, in accordance with JIS C 9108 (2017), the cleaning element is brought into contact with the flooring wooden board as the test surface and operated twice, and the peak value of the generated noise (3500HZ-5000HZ) is taken. Noise and quietness were evaluated.
FIG. 10 shows the results of the noise test. According to this, in the range of 3500HZ-5000HZ, the example produced the lowest noise, and the comparative example 1 also produced the second lowest noise after the example. In Comparative Example 2, high noise was generated when the blade and the floor surface (wooden board) came into contact with each other.

In the present embodiment, as the thread 121 constituting the brush 120, a filament thread of polyamide or polypropylene having a wire diameter of 0.05 mm to 0.5 mm is used. The diameter, material and thread density may be selected as appropriate. For example, if low noise is required, the wire diameter may be, for example, 0.05 mm to increase the flexibility of the brush 120 .
Further, when the clamping portion 112 of the base 110 and the base end portion of the brush 120 are sewn together, the tilt angle of the arch is adjusted by changing the amount of displacement of the folded-back ends in the longitudinal direction, thereby adjusting the floor surface FL. It is also possible to finely adjust the contact amount (nip amount).

DESCRIPTION OF SYMBOLS 10... Vacuum cleaner head 20... Rotating cleaning body 21... Rotating body, 22... Groove part 100... Cleaning body 110... Base, 111... Locking part, 112...・Clamping portion 113 Sewing thread 120 Brush 121 Thread 122 Holding thread

Claims (5)

a base;
a brush in which threads are continuously connected in the longitudinal direction of the base and are raised so as to cross and overlap each other in a state in which the front surface and the back surface of the arch are inclined in different directions from each other. rice field,
A cleaning body characterized by: The brush is woven in a zigzag so that the thread is folded back, and is folded in two along the central portion in the transverse direction. , overlapping each other without gaps,
The cleaning body according to claim 1, characterized in that: The oblique angle of the arch is in the range of 15 degrees to 75 degrees with respect to the longitudinal direction of the cleaning body,
The cleaning body according to claim 1 or 2, characterized in that: The base end of the brush is held by the base in the longitudinal direction and is fixed by sewing to the base.
The cleaning body according to any one of claims 1 to 3, characterized in that: a rotating body having grooves formed on its outer peripheral surface;
and the cleaning body according to any one of claims 1 to 4, wherein the base is fitted in the groove and attached.
A rotating cleaning body characterized by:

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