WO2021059737A1

WO2021059737A1 - Lint ball remover

Info

Publication number: WO2021059737A1
Application number: PCT/JP2020/029115
Authority: WO
Inventors: 大杉　泰啓
Original assignee: エヌケーグループ販売株式会社
Priority date: 2019-09-25
Filing date: 2020-07-29
Publication date: 2021-04-01
Also published as: JP2021050445A; JP6886199B2

Abstract

This lint ball remover is provided with: a cylindrical housing having an air suction opening that is open on the circumferential surface thereof; a fixed blade attached along the air suction opening; and a rotary blade that rotates inside the housing by the action of sucked air that is sucked into the air suction opening. The rotary blade has multiple slats that hold a tabular cutting edge on the tip thereof and the cutting edges are provided with a through hole that passes therethrough in the thickness direction. The through holes allow some of the sucked air hitting one surface of the cutting edges to escape to the other surface and act to increase the rotation speed of the rotary blade.

Description

Hair ball remover

The present disclosure relates to a pill remover used to cut and remove pills generated on the surface of a textile product.

In textile products such as clothes and carpets, there is a problem that the fibers on the surface are twisted and hardened by the action of friction applied during manufacturing or use to generate pills, which spoils the appearance. Patent Document 1 discloses a pill remover (rotary cutting device) used for cutting and removing such pills.

This fluff remover includes a rotary blade that rotates around an axis inside a cylindrical housing, and a thin plate-shaped fixed blade that is attached along an intake port that opens on the peripheral surface of the housing. .. The rotary blade has a plurality of blade plates lined up on the rotation circumference, and is an impeller that rotates by the action of intake air sucked into the intake port, and a plate-shaped cutting blade is held at the tip of each blade plate. Has been done. A plurality of through holes (blade holes) having blade portions on the peripheral edges of the fixed blades are arranged side by side in the vertical and horizontal directions.

The pill remover having the above configuration is used by applying the intake port of the housing to the surface of the textile product in which the pills are generated. The pills are drawn into the inside of the fixed blade through the blade holes by the action of the intake air sucked into the intake port, and are cut and removed by the action of the cutting blades that are in sliding contact with each blade hole on the rotation circumference of the rotary blade.

Japanese Patent No. 4369897

In the fluff remover described in Patent Document 1, the blade plate of the rotary blade has a shape in which the tip portion is tilted toward the upstream side in the rotation direction in order to improve the reception of intake air and increase the rotation speed. However, in the actual usage state, there is a problem that the expected rotation speed is not reached.

The purpose of the present disclosure is to sufficiently increase the rotational speed of the rotary blade by the action of intake air so that the pills can be cut and removed better.

The fluff remover according to the present disclosure has a plurality of cylindrical housings having an intake port provided on the peripheral surface, a fixed blade attached along the intake port, and a plurality of plate-shaped cutting blades at the tip. In a fluff remover having a blade plate of the above and a rotary blade that rotates inside the housing by the action of intake air sucked into the intake port, the cutting edge is penetrated in the thickness direction, and one surface of the cutting edge is provided. It is equipped with a ventilation hole that allows the intake air that hits the air to escape to the other side.

The rotary blade rotates by receiving the intake air from the intake port on the blade plate. The rotary blade holds a plate-shaped cutting blade that slides in contact with the fixed blade on the rotation circumference to cut pills, and the intake air from the intake port also hits the cutting blade. The tip of the cutting blade is directed to the downstream side in the rotation direction in order to cut the pills well, and the intake air that hits the cutting blade acts to inhibit the rotation of the rotary blade. The ventilation holes alleviate rotation inhibition through the intake air that hits the cutting edge.

The fluff remover according to claim 1, wherein a plurality of the ventilation holes are arranged side by side in the length direction of the cutting edge at intervals from each other.

By providing multiple ventilation holes, a sufficient opening area is secured within the length range of the cutting edge, and the effect of alleviating rotation inhibition is enhanced. The ventilation holes are arranged side by side at intervals, and the strength against bending deformation of the cutting edge is ensured at the portion between the ventilation holes.

Also, the ventilation hole is a rectangular window hole.

The opening area can be increased by making the ventilation hole a window hole with a rectangular cross section.

The ventilation holes are formed by punching.

The ventilation hole can be formed by punching the plate material in the same process as the outer shape of the cutting edge.

Further, the cutting edge is inserted into a holding groove provided at each tip edge of the blade plate, and is brought into contact with a retaining ring fitted and fixed on both sides of each blade plate to prevent the cutting edge from coming off. And the retaining ring comprises abutting pieces that are in surface contact with each other.

The cutting edge is inserted into the holding groove and prevented from coming off by a retaining ring to allow movement within the holding groove. In this holding structure, the cutting edge and the retaining ring come into contact with each other by the surface contact of the contact pieces, so that the cutting edge and the fixing tooth are slidably contacted at an appropriate angle to perform good cutting of pills. Can be done.

According to the present disclosure, the rotation speed of the rotary blade due to the action of intake air can be increased, and pills can be cut and removed satisfactorily.

It is a side sectional view of the fluff remover which concerns on Embodiment 1. FIG. It is an external perspective view of a rotary blade. It is an external perspective view of a cutting edge. It is an external perspective view of a fixed blade and a holder. It is the operation explanatory drawing of the ventilation hole. FIG. 5 is an external perspective view of a cutting edge included in the fluff remover according to the second embodiment. It is a top view of the retaining ring provided in the fluff remover which concerns on Embodiment 2. FIG. It is a perspective view which shows a part of the retaining ring enlarged. It is a perspective view which shows the holding state of a cutting edge.

(Embodiment 1)
Hereinafter, embodiments of the present disclosure will be described with reference to the drawings. FIG. 1 is a side sectional view of the fluff remover according to the first embodiment. As shown in the drawing, the fluff remover includes a rotary blade 1, a housing 2 for accommodating the rotary blade 1, and a plate-shaped fixed blade 3.

The rotary blade 1 includes a boss portion 11 to which the rotary shaft 10 is fitted, and a plurality of

blade plates

12, 12 ... Radiating from the boss portion 11 (six blade plates in the figure), and the rotary blade 1 is provided with the rotary shaft 10. It is configured as a resin impeller that rotates as a center. One

cutting blade

13, 13 ... Is held at the tip of each

blade plate

12, 12 ..., And a

weight plate

14, 14 ... Is held between the

blade plates

12, 12 ... It is attached.

FIG. 2 is an external perspective view of the rotary blade 1. As shown in this figure, the

blade plates

12, 12 ... Each have a leg portion 12a extending outward in the radial direction and an inclined portion 12b continuous with the tip of each leg portion 12a and inclined toward one side in the circumferential direction. It has. Each inclined portion 12b is provided with a holding groove 12c for holding the cutting edge 13. The holding groove 12c is a narrow groove that opens over the entire width at the tip edge of the inclined portion 12b. Further, both side edges are cut out in the leg portion 12a, and fitting

portions

12d and 12d which are continuous on the same circumference are formed between the blade plates 12.

FIG. 3 is an external perspective view of the cutting edge 13. The cutting edge 13 is a thin metal plate, and has a base portion 13a having substantially the same length as the width of the inclined portion 12b of the blade plate 12 and a blade portion 13b that is continuous with one long side of the base portion 13a and is bent to one side. And have. The

collar portions

13c and 13c are projected outward on both sides of the base portion 13a in the length direction. The

collar portions

13c and 13c have a short rectangular shape with one side along the other long side of the base portion 13a.

A plurality of (six in the figure) ventilation holes 13d are formed in the blade portion 13b of the cutting blade 13. The ventilation holes 13d are rectangular window holes that penetrate the blade portion 13b in the thickness direction, and are arranged side by side in the length direction of the blade portion 13b. Such a ventilation hole 13d can be formed in the same process as the outer shape of the cutting edge 13 by punching the plate material.

The size of the ventilation hole 13d is set so that an opening area having an appropriate ratio with respect to the entire blade portion 13b can be obtained. Further, the parallel spacing of the ventilation holes 13d is set so that a decrease in the bending strength of the blade portion 13b can be suppressed by leaving a crosspiece portion 13e having an appropriate width between the ventilation holes 13d. The ventilation holes 13d may have other shapes such as a circular shape, an elliptical shape, and a polygonal shape. However, as shown in FIG. 3, a plurality of rectangular ventilation holes 13d are arranged side by side to secure the bending strength and the opening area. Can be compatible with each other.

FIG. 2 shows one cutting edge 13. The cutting blade 13 having the above-described configuration aligns the blade portion 13b on the outside of the blade plate 12 with the inclination of the blade portion 13b opposite to that of the inclined portion 12b, and holds the base portion 13a in the holding groove 12c as shown by an arrow in FIG. The retaining ring 4 is fitted and held in the

fitting portions

12d, 12d on both sides so as to hang between the

blade plates

12, 12 ... FIG. 1 shows a cutting edge 13 held on each of a plurality of blade plates 12 and a retaining ring 4 fitted to a fitting portion 12d on one side.

The retaining ring 4 is a high-rigidity metal plate-shaped ring, and includes a stopper piece 40 projecting inward from the inner peripheral surface. The number of stopper pieces 40 is the same as that of the blade plates 12, and the number of stopper pieces 40 is evenly distributed in the circumferential direction. The inner diameter of the retaining ring 4 changes stepwise between the adjacent stopper pieces 40. In the retaining ring 4, the large inner diameter portion is loosely fitted into the fitting portion 12d, the stopper piece 40 is rotated clockwise from the same side to the position where the stopper piece 40 abuts on each blade plate 12, and the small inner diameter portion is fitted into the fitting portion. It is fixed by pressure contacting with 12d. The cutting edge 13 held in this way can be displaced along the respective holding grooves 12c, and the retaining ring 4 abuts on the flange portion 13c of the displaced cutting edge 13 to prevent it from coming out of the holding groove 12c. Performs a retaining function.

The weight plate 14 is a metal plate that is curved with an appropriate curvature. As shown in FIG. 2, fixed

seats

15, 15 ... Are provided between the

blade plates

12, 12, ... On the outside of the boss portion 11. The fixed seat 15 has a seating surface orthogonal to the radial direction of the boss portion 11, and the weight plate 14 has a curved direction in the same direction as the tilting direction of the inclined portion 12b in the blade plate 12, and each fixed seat 15 It is fixed to the seating surface of.

The housing 2 accommodating the rotary blade 1 is a cylindrical hollow container, and has an inner diameter capable of receiving the rotary blade 1 including the

cutting blades

13, 13 ... ing. As shown in FIG. 1, on the peripheral wall of the housing 2, an intake port 20 for sucking outside air and an auxiliary intake port 21 are provided adjacent to each other in the circumferential direction. Further, in the housing 2, a connecting pipe 22 for connecting to an intake source such as a dust suction pipe of a vacuum cleaner is integrally provided at a position away from the intake port 20 and the auxiliary intake port 21.

The fixed blade 3 is held by the holder 5 and attached to the housing 2 so as to cover the opening position of the intake port 20. FIG. 4 is an external perspective view of the fixed blade 3 and the holder 5. The fixed blade 3 has a rectangular plate shape of meat, and is provided with a large number of blade holes 30, 30 ... Arranged vertically and horizontally over substantially the entire surface, and ends on both sides of the parallel area of the blade holes 30, 30 ... Locking holes 31, 31 ... Arranged along the edge are provided. The blade hole 30 and the locking hole 31 are through holes that penetrate the fixed blade 3 in the thickness direction, and blade portions are provided on the peripheral edges of the respective blade holes 30.

The holder 5 is a rectangular frame in a plan view formed by connecting both ends of a pair of curved portions having a curvature corresponding to the outer shape of the housing 2 with a linear connecting portion. A plurality of hooking

protrusions

50, 50 ... Are arranged side by side. The number of

parallel protrusions

50, 50 ... and the parallel arrangement interval correspond to the parallel arrangement number and parallel arrangement interval of the locking holes 31, 31 ... Of the fixed blade 3. The fixing blade 3 hooks the locking holes 31, 31 ... On one side to the hooking

protrusions

50, 50 ..., And is held by the holder 5 as shown in FIG.

As shown in FIG. 1, the holder 5 is fixed so as to cover the opening position of the intake port 20. The fixing blade 3 held by the holder 5 is made of highly elastic metal, and when the holder 5 is fixed, the fixed blade 3 is pushed by the pressing rib 23 projecting from the inner surface of the housing 2 to be curved, and as shown in FIG. , Facing the inside of the intake port 20 at an appropriate length, and located on the rotation circumference of the

cutting blades

13, 13 ... Held by the

blade plates

12, 12 ... Of the rotary blade 1.

In the pill remover configured as described above, the connection pipe 22 of the housing 2 is connected to, for example, the dust suction pipe of the vacuum cleaner, and by the operation of the vacuum cleaner, the connection pipe 22 is shown by the white arrow in FIG. While generating air intake inside, the air intake port 20 provided in the housing 2 is used by touching the surface of the textile product on which the pills are generated.

The inside of the housing 2 communicates with the outside through the intake port 20 and the auxiliary intake port 21 provided on the peripheral wall, and when the above-mentioned intake air is generated, the inside of the housing 2 is indicated by an arrow in FIG. As shown by, the outside air is taken in through the intake port 20 and the auxiliary intake port 21. This intake air hits the

blade plates

12, 12, ... Of the rotary blade 1 supported inside the housing 2, and the rotary blade 1 rotates by the action of the intake air. The direction of rotation of the rotary blade 1 is opposite to the direction of inclination of the inclined portion 12b of the blade plate 12, as indicated by arrows in FIG.

The weight plate 14 fixed to the rotary blade 1 enhances the rotational inertia of the rotary blade 1 and acts to stably perform rotation by the action of intake air. The weight plate 14 is curved in the same direction as the tilt direction of the blade plate 12, and also serves a function of receiving intake air to generate an auxiliary rotational force.

The fixed blade 3 is located inside the air intake port 20, and the pills generated on the surface of the textile product applied to the air intake port 20 are collected from the blade holes 30, 30 ... Of the fixed blade 3 to the housing 2. Is drawn inside. Inside the housing 2, the rotary blade 1 is rotating, and the blade portions 13b of the

cutting blades

13, 13 ... Attached to the tips of the plurality of

blade plates

12, 12 ... Are in sequential sliding contact with the inner surface of the fixed blade 3. The blade portion 13b of the cutting blade 13 is inclined in the opposite direction to the inclined portion 12b of the blade plate 12, that is, the tip is inclined toward the downstream side in the rotation direction of the rotary blade 1, and is sharply slid on the inner surface of the fixed blade 3. Since they are in contact with each other, the fluff balls drawn from the blade holes 30, 30 ... Are cut by the synergistic action of the blade holes 30, 30 ... And the cutting blade 13. The pills cut in this way are sucked into the dust suction pipe through the connecting pipe 22 together with the intake air, and are collected in the dust collecting part of the vacuum cleaner.

The cutting edge 13 can be displaced along the respective holding grooves 12c as described above. The fixed blade 3 is hooked on the hooking

protrusions

50, 50 ... On the upstream side in the rotation direction of the rotary blade 1, and can be displaced between the holder 5 and the holding rib 23. The cutting blade 13 and the fixed blade 3 are in good sliding contact with each other due to their respective displacements.

The cutting blade 13 is provided with the above-mentioned ventilation hole 13d. FIG. 5 is an explanatory view of the operation of the ventilation hole 13d, and schematically shows the sliding contact portion between the cutting blade 13 and the fixed blade 3 in a linearly developed manner. The cutting edge 13 is held in the holding groove 12c of the blade plate 12, and the ventilation hole 13d provided in the cutting edge 13 is located at a portion protruding from the holding groove 12c as described above.

The rotary blade 1 rotates by receiving the intake air from the blade hole 30 of the fixed blade 3 on the blade plate 12 as indicated by the arrow in the figure. The white arrow in the figure indicates the moving direction of the cutting edge 13 due to the rotation of the rotary blade 1. The protruding portion of the cutting edge 13 provided with the ventilation hole 13d is inclined toward the downstream side in the moving direction, and the rotation of the rotary blade 1 is hindered by the intake air that hits one surface of the cutting edge 13. The ventilation hole 13d provided in the cutting blade 13 of the present disclosure has an effect of escaping the intake air that hits the cutting blade 13 to the other surface side to alleviate the rotation obstruction and increase the rotation speed of the rotary blade 1.

The rotation obstruction of the rotary blade 1 can be effectively alleviated by increasing the opening area of the ventilation hole 13d, but when the opening area is increased, the cutting blade 13 bends and deforms at the sliding contact portion with the fixed blade 3. There is a risk of interfering with the cutting of pills. The ventilation holes 13d shown in FIG. 3 are rectangular window holes arranged side by side in the length direction of the blade portions 13b, and since the crosspieces 13e for ensuring strength are provided between each other, bending deformation can occur. A sufficient opening area can be secured while effectively preventing it.

In order to demonstrate the effect of the ventilation hole 13d, the applicant of the present application applies the same conditions to the fluff remover provided with the cutting blade 13 shown in FIG. 3 and the fluff remover provided with the cutting blade having no ventilation hole. A test was conducted below to measure the rotational speed of the rotary blade 1. As a result of this test, it is clear that by providing the ventilation hole 13d, the rotation speed of the rotary blade 1 is increased by 10% or more, the fluctuation of the rotation speed is small, and the pills can be cut and removed better. It became.

(Embodiment 2)
FIG. 6 is an external perspective view of the cutting edge 13 included in the fluff remover according to the second embodiment. The illustrated cutting blade 13 includes a base portion 13a, a blade portion 13b, a flange portion 13c, and further includes an abutting piece 13f, as in the first embodiment. As shown in the drawing, the contact piece 13f is formed by bending one edge of the collar portion 13c that contacts the retaining ring 4 at a right angle, and has a flat surface that forms a predetermined angle with respect to the blade portion 13b.

FIG. 7 is a plan view of the retaining ring 4 provided in the fluff remover according to the second embodiment, and FIG. 8 is an enlarged perspective view showing a part of the retaining ring 4. As shown in FIG. 7, the retaining ring 4 includes a contact piece 41 at a position adjacent to each of the plurality of stopper pieces 40. As shown in FIG. 8, the contact piece 41 is formed by bending a tongue piece connected to the inner circumference of the small inner diameter portion at a right angle on one side of the stopper piece 40, and is flush with the inner peripheral surface of the small inner diameter portion. It has a flat surface that forms a right angle.

FIG. 9 is a perspective view showing a holding state of the cutting edge 13. As in the case of the first embodiment, the cutting edge 13 of the second embodiment has a retaining ring 4 in which the base portion 13a is inserted into the holding groove 12c provided in the inclined portion 12b of the blade plate 12 and fitted and fixed to the fitting portion 12d. It is held by holding it in place. The holding groove 12c of the blade plate 12 is a wide groove capable of accepting the flange portion 13c provided with the contact piece 13f. Further, the fitting portion 12d of the blade plate 12 is provided with a recess in which the contact piece 41 included in the retaining ring 4 can be received. As shown in FIG. 9, the cutting edge 13 makes the flat surface of the contact piece 13f housed in the holding groove 12c face the flat surface of the contact piece 41 that engages with the recess of the fitting portion 12d. Is held.

The cutting edge 13 held in this way can be displaced along the holding groove 12c as in the first embodiment, and the retaining ring 4 abuts on the displaced cutting edge 13 to prevent it from coming out of the holding groove 12c. Performs a retaining function to prevent. At this time, since the cutting blade 13 and the retaining ring 4 bring the above-mentioned flat surfaces of the contact piece 13f and the contact piece 41 into surface contact with each other, the inclination angle of the blade portion 13b of the cutting blade 13 with respect to the blade plate 12 is appropriately set. It is possible to keep the cutting blade 13 and the fixed blade 3 sliding at an appropriate angle so that the pills can be cut satisfactorily.

It should be noted that the embodiment disclosed this time is an example in all respects and is not restrictive. The scope of the present invention is indicated by the scope of claims, not the above-mentioned meaning, and is intended to include all modifications within the meaning and scope equivalent to the scope of claims.

1 Rotary blade 2 Housing 3 Fixed blade 4 Retaining ring 12 Blade plate 12c Holding groove 13 Cutting blade

13d Ventilation hole

13f Contact piece 20 Intake port 41 Contact piece

Claims

It has a cylindrical housing with an intake port on the peripheral surface, a fixed blade attached along the intake port, and a plurality of blade plates holding a plate-shaped cutting edge at the tip, and the intake air. In a fluff remover provided with a rotary blade that rotates inside the housing by the action of intake air sucked into the mouth.
A fluff remover having a ventilation hole that penetrates the cutting edge in the thickness direction and allows the intake air that hits one surface of the cutting edge to escape to the other surface side.
The fluff remover according to claim 1, wherein a plurality of the ventilation holes are arranged side by side in the length direction of the cutting edge at intervals from each other.
The fluff remover according to claim 2, wherein the ventilation hole is a rectangular window hole.
The fluff remover according to any one of claims 1 to 3, wherein the ventilation hole is formed by punching.
The cutting edge is inserted into a holding groove provided at the tip edge of each of the blade plates, and is brought into contact with retaining rings fitted and fixed on both sides of each blade plate to prevent them from coming off.
The fluff remover according to any one of claims 1 to 4, wherein the cutting edge and the retaining ring include contact pieces that come into surface contact with each other.