JP2021008694A - Pill remover - Google Patents

Abstract

To provide a pill remover which can achieve both of sure holding and easiness of replacement of a cutting blade by improving a holding structure of the cutting blade in a rotary blade.SOLUTION: A pill remover includes a cylindrical housing 2 with a suction port 20 opened in a peripheral surface, a fixed blade 13 attached along the suction port 20, and a rotary blade 1 that includes a plurality of blade plates 12 holding a cutting blade 13 at a tip and is rotated in the housing 2 by an action of suction air sucked into the suction port 20. The cutting blade 3 is inserted in a holding groove provided on each of the blade plates 12 and is prevented from dropping off by a retaining ring 4. The retaining ring 4 has a large diameter part 40 and a small diameter part 41 and is fixed in such a manner that the large diameter part 40 is fitted to a fitting part 12d of the blade plate 12 and rotated in one direction and the small diameter part 41 is made to bite into the fitting part 12d.SELECTED DRAWING: Figure 1

Description

The present disclosure relates to a pill remover used to cut and remove pills formed 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 impairs 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 arranged on the rotation circumference, and is an impeller that rotates by the action of intake air sucked into the intake port, and a cutting blade is held at the tip of each blade plate. A plurality of through holes (blade holes) having blade portions on their respective peripheral edges are arranged side by side in the fixed blade.

The pill remover having the above configuration is used with the intake port of the housing facing the surface of the textile product on which the pills are generated. The fluff is drawn into the inside of the fixed blade through the blade hole by the action of the intake air sucked into the intake port, and is cut and removed by the action of the cutting edge that is 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 cutting edge is inserted into a holding groove provided at the tip edge of each of a plurality of blade plates, and is provided on both sides of each blade plate so as to be continuous on the same circumference. It is held by a retaining ring that is fitted and fixed to the fitting portion to prevent it from coming off. By displacing the cutting edge inside each holding groove, the cutting edge slides into the inner surface of the fixed blade without a gap, and the pill can be cut reliably. In addition, the cutting edge can be replaced by removing the retaining ring when it is worn.

However, the retaining ring that prevents the cutting edge from coming off may loosen due to the action of vibration and external force applied during use, and there is a concern that the holding of the cutting edge may be impaired. Loosening of the retaining ring can be alleviated by increasing the fitting strength, but it is difficult to attach the retaining ring at the time of assembly and to remove the retaining ring at the time of replacing the cutting edge.

An object of the present disclosure is to improve the holding structure of the cutting edge in the rotary blade to achieve both reliable holding of the cutting edge and ease of replacement.

The fluff remover according to the present disclosure has a cylindrical housing having an intake port provided on the peripheral surface, a fixed blade attached along the intake port, and a plurality of blades holding a cutting edge at the tip. In a fluff remover having a plate and having a rotary blade that rotates inside the housing by the action of intake air from the intake port, the cutting blade is provided in a holding groove provided at each tip edge of the blade plate. It is inserted and prevented from coming off by a stopper ring that is fitted and fixed to the fitting portions provided on both sides of each blade plate, and the stopper ring has a large diameter portion having an inner diameter larger than the outer diameter of the fitting portion. , A small diameter portion continuous with the large diameter portion and having an inner diameter smaller than the outer diameter of the fitting portion is provided in the same number as the blade plate, and each set of large diameter portions is provided in each of the fitting portions of the blade plates. It is fitted and rotated in one direction, and the small diameter portion is made to bite into the fitting portion and fixed.

The retaining ring is rotated in one direction by fitting a large-diameter portion to a fitting portion provided on each blade plate. A small diameter portion is continuous on one side of the large diameter portion. The inner diameter of the small diameter portion is smaller than the outer diameter of the fitting portion. The retaining ring is fixed with the small diameter portion biting into the fitting portion, is not easily loosened by the action of vibration or external force, and the cutting edge is securely held. The retaining ring can be rotated in the other direction, and the large diameter portion can be easily removed at a position aligned with the fitting portion, so that the worn cutting edge can be replaced.

Further, the rotation direction when the retaining ring is fixed is opposite to the rotation direction of the rotary blade.

The inertial force applied to the retaining ring at the start of rotation of the rotary blade is in the same direction as the rotation direction at the time of fixing, and it is possible to prevent the retaining ring from loosening due to this inertial force.

Further, the retaining ring includes an engaging portion for engaging a jig for rotation operation.

The retaining ring can be rotated by using a jig engaged with the engaging portion, and can be easily attached and detached. The engaging portion may be a protrusion, notch or hole provided on the side surface or peripheral surface of the retaining ring.

According to the present disclosure, the retaining ring can be easily attached and detached, the cutting edge can be reliably held, and the worn cutting edge can be easily replaced.

It is a side sectional view of the fluff remover which concerns on embodiment. It is an external perspective view of a rotary blade. It is an external perspective view of a fixed blade and a holder. It is a top view of a retaining ring. It is explanatory drawing of the attachment procedure of a retaining ring.

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 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 of the blade plates 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, in the inclined portion 12b, both side edges are cut out to an appropriate width, and fitting portions 12d and 12d which are continuous on the same circumference are formed between the blade plates 12.

FIG. 2 shows one cutting edge 13. The cutting edge 13 is a thin metal plate, and includes a base portion 13a having substantially the same width as the inclined portion 12b of the blade plate 12, and a blade portion 13b continuous with the base portion 13a and bent to one side. On both sides of the base portion 13a, collar portions 13c and 13c are projected outward.

As shown by arrows in FIG. 2, the cutting edge 13 has a base portion 13a inserted into the holding groove 12c of the blade plate 12 and hung between the blade plates 12, 12 ... On both sides of the fitting portions 12d, 12d. The retaining ring 4 is fitted to the blade and held. FIG. 1 shows a retaining ring 4 fitted to the fitting portion 12d on one side. The cutting edge 13 held in this way can be displaced along the respective holding grooves 12c, and the retaining ring 4 abuts the displaced cutting edge 13 coming out of the holding groove 12c to the flange portion 13c. It fulfills the retaining function of regulating with. The configuration of the retaining ring 4 and the fitting procedure will be described later.

The weight plate 14 is a metal plate that is curved with an appropriate curvature. As shown in FIG. 2, on the outside of the boss portion 11, fixed seats 15, 15 ... Are provided at the central portion in the width direction between the blade plates 12, 12 ... The fixed seat 15 has a seat surface orthogonal to the radial direction of the boss portion 11. The weight plate 14 is fixed to the seating surface of each of the fixed seats 15 with the bending direction in the same direction as the inclination direction of the inclined portion 12b in the blade plate 12.

The housing 2 accommodating the rotary blade 1 is a cylindrical hollow container having an inner diameter capable of receiving the rotary blade 1 including the cutting blades 13, 13 ... Held by the blade plates 12, 12 ... 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 is attached to the housing 2 so as to cover the opening position of the intake port 20. FIG. 3 is an external perspective view of the fixed blade 3 and the holder 5. The fixed blade 3 has a thin rectangular plate shape, 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 the blade hole 30 is provided with a blade portion on the peripheral edge.

The holder 5 is a rectangular frame 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, and a plurality of connecting portions on one side. The hanging 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 rotational 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, for example, the connection pipe 22 of the housing 2 is connected to the dust suction pipe of the vacuum cleaner, and the connection pipe 22 is operated by the operation of the vacuum cleaner as shown by the white arrow in FIG. While generating air intake inside, the air intake port 20 opened 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 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 has an action of stably performing 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 intake port 20, and the pills generated on the surface of the textile product applied to the intake port 20 are formed from the blade holes 30, 30 ... Of the fixed blade 3 to the housing 2. It is drawn into the inside of. Inside the housing 2, the rotary blade 1 is rotating, and the cutting blades 13, 13 ... Attached to the tips of the plurality of blade plates 12, 12 ... Sequentially slide into the inner surface of the fixed blade 3, so that each blade hole 30 The fluff drawn from the blades 30, 30 ... Is 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 to 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, and the pills can be reliably cut at the sliding contact portion.

FIG. 4 is a plan view of the retaining ring 4, and FIG. 5 is an explanatory view of the mounting procedure of the retaining ring 4. The retaining ring 4 is a ring made of a metal material having an appropriate thickness, and includes the same number of sets (6 sets) of the large diameter portion 40 and the small diameter portion 41 as the blade plate 12 of the rotary blade 1. The inner diameter of the large diameter portion 40 and the small diameter portion 41 are different, and the inner diameter D ₀ of the large diameter portion 40 is from the outer diameter d of the fitting portion 12d of the rotary blade 1 to which the retaining ring 4 is fitted (see FIG. 5). The inner diameter D ₁ of the small diameter portion 41 is smaller than the outer diameter d of the fitting portion 12d.

The small diameter portion 41 is continuous on one side in the circumferential direction of the large diameter portion 40 of the same set via an inclined portion. A pair of small diameter portions 41 adjacent to each other are located on the other side of the large diameter portion 40, and are partitioned between them by a stopper piece 42 projecting inward on the inner peripheral surface of the retaining ring 4. .. The stopper pieces 42 are evenly arranged in the circumferential direction of the retaining ring 4, and each stopper piece 42 is engaged with a jig for rotation operation by cutting out the center of the protruding end portion. A joint 43 is formed.

As shown in FIG. 5, the retaining ring 4 configured as described above aligns the large diameter portion 40 of each set in the circumferential direction and fits the retaining ring 4 into the fitting portion 12d of the blade plate 12. The inner diameter D ₀ of the large diameter portion 40 is larger than the outer diameter d of the fitting portion 12d, and the retaining ring 4 can be easily fitted. The inner diameter D ₀ of the large diameter portion 40 may be appropriately set under the condition that it is larger than the outer diameter d of the fitting portion 12d, and may be changed continuously or stepwise in the circumferential direction.

After this fitting, the retaining ring 4 is rotated in the direction shown by the white arrow in FIG. 5, and the small diameter portion 41 continuous with the large diameter portion 40 is fitted to the fitting portion 12d. The inner diameter D ₁ of the small diameter portion 41 is smaller than the outer diameter d of the fitting portion 12d, and the retaining ring 4 has the small diameter portion 41 bite into the fitting portion 12d and is firmly fixed as shown in FIG. Therefore, the retaining ring 4 is hard to loosen due to the above-mentioned vibration and external force applied during use, and the holding state of the cutting edge 13 can be maintained well.

The dimensional difference between the inner diameter D ₁ of the small diameter portion 41 and the outer diameter d of the fitting portion 12d is appropriately set according to the combination of the materials of the retaining ring 4 and the rotary blade 1. Further, the inner diameter D ₁ of the small diameter portion 41 may be changed continuously or stepwise in the circumferential direction.

The rotation operation of the retaining ring 4 can be easily performed by using a dedicated jig that can engage with the engaging portion 43 provided on the stopper piece 42. As shown in FIG. 1, the retaining ring 4 is securely fixed by rotating the blade plate 12 until the stopper piece 42 hits the blade plate 12. The stopper piece 42 acts to prevent an excessive rotation operation of the retaining ring 4. The engaging portion 43 is not limited to the notch provided in the stopper piece 42 as shown in the drawing, but may be a protrusion or a hole into which the jig can be engaged, and may be provided at an appropriate position of the retaining ring 4. ..

The direction of the rotation operation of the retaining ring 4 shown in FIG. 5 is opposite to the rotation direction of the rotary blade 1 shown in FIG. At the start of rotation of the rotary blade 1, an inertial force in the same direction as the direction of the rotation operation at the time of fixing is applied to the retaining ring 4, and it is possible to prevent the retaining ring 4 from loosening due to this inertial force.

The retaining ring 4 can be rotated in the direction opposite to that at the time of attachment, and can be easily removed at a position where the large diameter portion 40 is aligned with the fitting portion 12d of the blade plate 12. The cutting edge 13 worn by the above-mentioned use can be taken out from the holding groove 12c after removing the retaining ring 4 and replaced with a new cutting edge 13.

It should be noted that the embodiments disclosed this time are exemplary in all respects and are not considered to be 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 12d Fitting part 13 Cutting blade 20 Intake port 30 Blade hole 40 Large diameter part 41 Small diameter part 43 Engagement part

Claims (3)

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 cutting edge at the tip, and from the intake port. In a fluff remover provided with a rotary blade that rotates inside the housing by the action of the intake air of
The cutting edge is inserted into a holding groove provided at the tip edge of each of the blade plates, and is prevented from coming off by retaining rings fitted and fixed to fitting portions provided on both sides of each blade plate.
The stop ring has a large diameter portion having an inner diameter larger than the outer diameter of the fitting portion and a small diameter portion continuous with the large diameter portion and having an inner diameter smaller than the outer diameter of the fitting portion. The same number of sets are provided, and the large diameter part of each set is fitted to each of the fitting parts of each blade plate and rotated in one direction, and the small diameter part is bitten into the fitting part and fixed. .. The fluff remover according to claim 1, wherein the rotation direction when the retaining ring is fixed is opposite to the rotation direction of the rotary blade. The fluff remover according to claim 1 or 2, wherein the retaining ring includes an engaging portion for engaging a jig for rotation operation.

Images