JP2011067585A - Slide contact member - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a slide contact member for increasing the volume of a slide contact part without enlarging sliding resistance between the slide contact part and a contacted part. <P>SOLUTION: A brush body 32 as the slide contact member includes a fluff part 36 as the slide contact part which is used in a rotary movement state, while making slide contact with a floor surface. The fluff part 36 is formed of chenille 35. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a slidable contact member including a slidable contact portion that is used in a state of relative movement while being in slidable contact with a contacted portion.

  As such a slidable contact member, for example, a member attached to a rotating body rotatably accommodated in a head of an electric vacuum cleaner and used as a rotating brush is known (for example, Patent Document 1). When the floor surface (surface to be cleaned) is cleaned with this electric vacuum cleaner, the rotating brush rotates so that dust on the floor surface is scraped off by the rotating brush. It is preferable that the fluff portion, which is a portion in sliding contact with the floor surface in such a rotating brush, is as bulky as possible from the viewpoint of scraping off dust on the floor surface without leakage.

JP 2007-228990 A

  By the way, since the fluff part which is in sliding contact with the floor surface is composed of a large number of linear monofilament yarns in the rotating brush of Patent Document 1, in order to make the fluff part bulky, the number of yarns constituting the fluff part is increased. Although it is conceivable to increase the thickness of the yarn constituting the fluff portion, there is a problem that the rigidity of the fluff portion increases and the sliding resistance against the floor surface increases.

  The present invention has been made paying attention to such problems. An object of the invention is to provide a slidable contact member capable of making the slidable contact portion bulky without increasing the sliding resistance between the slidable contact portion and the contacted portion.

  In order to achieve the above object, the invention described in claim 1 is a sliding contact member provided with a sliding contact portion that is used in a state of relative movement while being in sliding contact with the contacted portion. The gist is that the contact portion is made of a yarn containing at least a chenille yarn.

  According to the above configuration, since the sliding contact portion is made of a yarn containing at least chenille yarn, the sliding contact portion can be made bulky without increasing the sliding resistance between the sliding contact portion and the contacted portion. In general, the “chenille yarn” is formed by twisting the core yarn and the presser yarn in a state where a plurality of flower yarns are sandwiched between the core yarn and the presser yarn. Compared to yarn and spun yarn, etc., the bulk per one is high. In addition, “sliding contact” does not only mean that the sliding contact portion moves relative to the contacted portion in a state where the sliding contact portion is in contact with the contacted portion. The state in which a part contacts a to-be-contacted part is also included.

The gist of the invention of claim 2 is that, in the invention of claim 1, at least a part of the chenille yarn has conductivity.
According to the above configuration, since at least a part of the chenille yarn has conductivity, it is possible to suppress the sliding contact portion from being charged with static electricity.

  The invention according to claim 3 is the invention according to claim 1 or 2, wherein the sliding contact portion is constituted by a raised portion of a cut pile fabric in which the chenille yarn is used as a pile yarn. It is a summary.

  According to the above-described configuration, for example, it is possible to scrape off deposits such as dust and particles adhering to the contacted portion without leakage, and that the scraped deposit adheres to the sliding contact portion due to static electricity and accumulates. It becomes possible to suppress.

The gist of the invention described in claim 4 is that, in the invention described in claim 1 or 2, the sliding contact portion is constituted by a woven fabric or a knitted fabric including the chenille yarn.
According to the above configuration, it is possible to easily provide a step on the surface of the woven fabric or knitted fabric that is the sliding contact portion only by changing the length of the chenille yarn constituting the woven fabric or knitted fabric.

The gist of the invention according to claim 5 is that, in the invention according to claim 4, the woven fabric or the knitted fabric is formed in a cylindrical shape.
According to the said structure, when adhering to a column shape or a cylindrical thing, it is convenient.

The gist of the invention described in claim 6 is that, in the invention described in claim 5, the woven fabric or the knitted fabric includes elastic fibers.
According to the above configuration, since the tubular woven fabric or knitted fabric is elastically deformed, it is possible to easily perform an operation when the woven fabric or knitted fabric is attached to a columnar or tubular fabric.

The gist of the invention according to claim 7 is that, in the invention according to claim 6, the elastic fiber extends along a circumferential direction of the woven fabric or the knitted fabric formed in a cylindrical shape.
According to the above configuration, the tubular woven fabric or the knitted fabric can be easily elastically deformed so that the inner diameter thereof is particularly large. Therefore, the work when the woven fabric or the knitted fabric is attached to a columnar or cylindrical fabric. Can be performed more easily.

  The invention according to claim 8 is rotatably accommodated in the head of the electric vacuum cleaner for sucking dust on the surface to be cleaned in the invention according to any one of claims 1 to 7. The main point is that it is attached to a rotating body.

  According to the said structure, when cleaning a to-be-cleaned surface with an electric vacuum cleaner, it becomes possible to scrape off dust on a to-be-cleaned surface without a leak by a sliding contact part because a rotary body rotates.

  ADVANTAGE OF THE INVENTION According to this invention, the sliding contact member which can make a sliding contact part bulky without enlarging the sliding resistance of a sliding contact part and a to-be-contacted part can be provided.

The plane sectional view showing the head of the vacuum cleaner of a 1st embodiment. The sectional side view which shows the use condition of the head of the vacuum cleaner of FIG. In 1st Embodiment, (a) is a perspective view which shows the rotating brush of a vacuum cleaner, (b) is the side enlarged view of (a). Sectional drawing of the brush body of 1st Embodiment. The schematic diagram of the chenille yarn which comprises the fluff part of the brush body of 1st Embodiment. The perspective view which shows the wheel of 2nd Embodiment. FIG. 7 is an exploded perspective view of FIG. 6. In 2nd Embodiment, the bottom face simplification figure which shows a state when a wheel is attached to the head of a vacuum cleaner. In 3rd Embodiment, (a) is a disassembled perspective view of a wheel, (b) is sectional drawing of (a). The schematic diagram which shows a state when a cylinder is set in a metal mold | die in the example of a change. FIG. 6 is a schematic perspective view illustrating a charging brush for an image forming apparatus and a roll brush used as a charge eliminating brush in a modified example. The principal part expansion schematic diagram which shows the textile fabric containing chenille yarn in the example of a change. FIG. 13 is a schematic cross-sectional view showing a state when a step is provided on the surface of the fabric of FIG. In the example of a change, the perspective view which shows a state when the textile fabric of FIG. 12 is attached to the vacuum cleaner suction tool. The principal part expansion front view which shows the roll brush used as a cleaning brush for filters in the example of a change. FIG. 9 is a perspective view showing a sealing material for an image forming apparatus in a modification example.

(First embodiment)
Hereinafter, a first embodiment in which a sliding contact member of the present invention is embodied as a brush body of a rotating brush disposed in a head of a vacuum cleaner will be described with reference to the drawings.

First, the structure of the head of the vacuum cleaner in which the rotating brush is disposed will be described.
As shown in FIGS. 1 and 2, the head 11 of the vacuum cleaner includes a case 12 that is substantially T-shaped in plan view. One end side of the connection pipe 13 is connected to the rear end portion of the case 12 so as to be rotatable with respect to the case 12, and the other end side of the connection pipe 13 is connected to a main body of an electric vacuum cleaner (not shown). ing. A rectangular suction port 14 that is long in the left-right direction is opened at the front end of the bottom surface of the case 12.

  On the inner bottom surface of the case 12, a rectangular plate-like partition plate 15 is erected so as to surround the suction port 14, and an air suction port 16 penetrates through the center of the rear end of the partition plate 15. Is formed. A motor bearing 17 is provided on the left inner surface of the case 12, and a tip of an output shaft 19 extending from a motor 18 provided in the case 12 is rotatably supported on the motor bearing 17.

  Rotation supports 20 are respectively provided on the left and right side walls of the partition plate 15, and both the rotation supports 20 are rotatably supported by brush bearings 21 respectively provided on the left and right inner surfaces of the case 12. Yes. A rotating brush 22 extending in the left-right direction is accommodated inside the partition plate 15, and both end portions of the rotating brush 22 are supported by both rotating supports 20.

  A roller 19a is attached to the tip of the output shaft 19 of the motor 18, and an endless belt 23 is hung between the roller 19a and the left rotation support body 20. The rotational driving force of the motor 18 is transmitted to the rotary brush 22 via the output shaft 19, the roller 19a, the belt 23, and the left rotation support body 20. That is, the rotary brush 22 is rotated by driving the motor 18.

  When the vacuum cleaner is used, the air inside the partition plate 15 is sucked into the main body of the vacuum cleaner (not shown) through the air suction port 16 and the connection pipe 13 and the rotating brush 22 is rotated. Thus, dust such as dust, dust, hair, etc. on the floor surface F is scraped off and sucked from the suction port 14 together with air. In this case, the rotating brush 22 is rotated in a direction (direction indicated by an arrow in FIG. 2) that does not prevent the head 11 of the vacuum cleaner from moving forward.

Next, the configuration of the rotating brush 22 will be described in detail.
As shown in FIGS. 3A and 3B, the rotating brush 22 includes a rotating body 31 made of a rod-shaped metal having an X-shape in cross section, and a sliding contact member attached to the rotating body 31. And a brush body 32. The rotating body 31 is integrally connected to the base ends of four protrusions 31a having a T-shape in cross section so that the protrusions 31a are arranged at equal intervals in the circumferential direction of the rotating body 31. Further, it is formed by twisting about 180 degrees in the circumferential direction over the whole. Accordingly, four concave grooves 33 extending spirally along the longitudinal direction of the rotating body 31 are formed between the protrusions 31 a on the peripheral surface of the rotating body 31. And the opening part 33a of each concave groove 33 is each narrowed by the protrusion 31b with which the front-end | tip part of each protrusion 31a was equipped.

  As shown in FIG. 4, the brush body 32 includes a base cloth 34 made of a belt-like woven fabric formed by weaving a weft yarn 34 a and a warp yarn 34 b made of conductive fibers, and a conductive material on the base cloth 34. A fluff portion 36 as a sliding contact portion formed (raised) by pile weaving a plurality of chenille yarns 35 made of fibers is provided. That is, the brush body 32 is constituted by a cut pile fabric, and chenille yarn 35 is used as a pile yarn of the cut pile fabric. In the present embodiment, Sanderlon (registered trademark) manufactured by Nippon Kashiwa Dyeing Co., Ltd. is used as the conductive fiber constituting the weft yarn 34a, the warp yarn 34b, and the chenille yarn 35.

  Furthermore, a coating layer 37 is provided on the surface of the base fabric 34 of the brush body 32 opposite to the surface on which the fluff portion 36 is formed, and each chenille yarn 35 constituting the fluff portion 36 is formed by the coating layer 37. The root portion and the base fabric 34 are firmly joined. As the coating agent for forming the coating layer 37, a conductive emulsion is used. As shown in FIG. 3B, the width in the short direction of the base fabric 34 can be inserted into the concave groove 33 of the rotating body 31 and is larger than the width of the opening 33 a of the concave groove 33. Is set to

  As shown in FIG. 5, when the chenille yarn 35 is formed, first, the core yarn 38, the presser yarn 39, and the low-melting melt yarn 40 made of heat-sealing fibers are arranged in parallel to each other. Subsequently, a plurality of flower yarns 41 are sandwiched between the core yarn 38 and the presser yarn 39 so as to be orthogonal to the core yarn 38 and the presser yarn 39. In this state, the core yarn 38, the presser yarn 39, and the low melting point molten yarn 40 are twisted together, and then the low melting point molten yarn 40 is melted by heating to join the core yarn 38, the pressing yarn 39, and the flower yarn 41. Thus, the chenille yarn 35 is obtained. In the present embodiment, the core yarn 38, the presser yarn 39, and the flower yarn 41 are made of conductive fibers (Sunderlon (registered trademark) manufactured by Nippon Kalash dyeing Co., Ltd.).

Next, a method for attaching the brush body 32 to the rotating body 31 will be described.
As shown in FIGS. 3A and 3B, when the brush body 32 is attached to the rotating body 31, the end portion of the rotating body 31 so that the fluff portion 36 protrudes outward from the opening 33 a of the groove 33. The base cloth 34 of the brush body 32 is slid and inserted into the concave grooves 33. Thereby, the brush body 32 is inserted and attached to the rotating body 31 in a state of being twisted spirally along each concave groove 33. At this time, since the width of the base cloth 34 in the short direction is larger than the width of the opening 33 a of the concave groove 33 of the rotating body 31, the brush body 32 does not fall off from the opening 33 a of the concave groove 33.

Next, the operation of the rotating brush 22 will be described.
Now, when cleaning the floor surface F, which is a surface to be cleaned, as a contacted portion by an electric vacuum cleaner, the head 11 is first placed on the floor surface F as shown in FIG. When the vacuum cleaner is operated in this state, the motor 18 is driven and the air inside the partition plate 15 is sucked into the main body of the vacuum cleaner (not shown) from the air suction port 16 through the connection pipe 13. . At this time, the rotating brush 22 is rotated counterclockwise (direction indicated by an arrow in the figure) as viewed from the left side by driving the motor 18, and the fluff portion 36 of the rotating brush 22 is brought into sliding contact with the floor surface F. The By the sliding contact of the fluff portion 36 with the floor surface F, dust on the floor surface F is scraped off and sucked into the main body portion of a vacuum cleaner (not shown) together with air.

  At this time, since the rotating body 31 and the brush body 32 constituting the rotating brush 22 have conductivity, static electricity generated by friction between the fluff portion 36 and the floor surface F is less likely to accumulate in the fluff portion 36. As a result, the adhesion of dust to the fluff portion 36 due to static electricity is reduced, and the dust adhering to the fluff portion 36 is smoothly sucked into the main body portion of the vacuum cleaner together with air and removed.

  In this case, since the fluff portion 36 is constituted by the chenille yarn 35 which is bulkier than a normal yarn, dust on the floor surface F is scraped off without leakage and a wiping effect on the floor surface F is also obtained. In addition, since the fluff portion 36 is configured by the chenille yarn 35 that is bulkier than a normal yarn, the bulk of the fluff portion 36 is sufficiently secured with a smaller number than the normal yarn. The sliding resistance of the fluff portion 36 does not increase.

According to the first embodiment described in detail above, the following effects are exhibited.
(1) Since the fluff portion 36 is composed of the chenille yarn 35, the bulk of the fluff portion 36 can be sufficiently secured with a smaller number than the normal yarn. For this reason, the fluff portion 36 can be made bulky without increasing the sliding resistance between the fluff portion 36 and the floor surface F.

  (2) Since the chenille yarn 35 constituting the fluff portion 36 is made of a conductive fiber, static electricity accumulated in the fluff portion 36 due to friction between the fluff portion 36 and the floor surface F can be reduced. Therefore, the dust scraped off from the floor surface F by the fluff portion 36 can be prevented from adhering to the fluff portion 36 due to static electricity and accumulating.

  (3) The brush body 32 having the fluff portion 36 constituted by the chenille yarn 35 is attached to the rotary body 31 rotatably accommodated in the head 11 of the electric vacuum cleaner for sucking dust on the floor surface F. Therefore, when the floor surface F is cleaned by the electric vacuum cleaner, the rotating body 31 rotates, so that dust on the floor surface F can be scraped off by the fluff portion 36 without leakage.

(Second Embodiment)
Hereinafter, a second embodiment in which the sliding contact member of the present invention is embodied as a wheel 60 for rotatably mounting to a head of a vacuum cleaner will be described based on the drawings.

  As shown in FIG. 6 and FIG. 7, the wheel 60 as a sliding contact member includes a main body roller 61 having a cylindrical shape, and a cylinder as a cylindrical sliding contact portion attached to the outer peripheral surface 61 a of the main body roller 61. And a body 62. Then, as shown in FIG. 8, the wheel 60 has a predetermined number (4 in the present embodiment) at a predetermined position on the contact surface 80 a with the floor surface F (see FIG. 2) of the head 80 of the vacuum cleaner via the rotating shaft 63. Only one) can be rotated for each.

  As shown in FIGS. 6 and 7, the main body roller 61 is made of a hard synthetic resin, and the cylindrical body 62 is made of polyamide chenille yarn 35 (the length of the flower yarn 41 is set to about 3 to 4 mm). And a spandex yarn (polyurethane-based elastic yarn) as an elastic fiber. As the spandex yarn used for the fabric constituting the cylindrical body 62, one covered with a polyamide yarn is used. Further, the fabric constituting the cylindrical body 62 is woven so that the spandex yarn extends along the circumferential direction of the cylindrical body 62 and the chenille yarn 35 extends along the axial direction of the cylindrical body 62. Therefore, the cylindrical body 62 has elasticity (stretchability) in the radial direction and hardly has elasticity in the axial direction.

  Further, in the woven fabric constituting the cylindrical body 62, the thickness of the spandex yarn is preferably set to be not more than half the thickness of the chenille yarn 35. In this embodiment, the thickness of the spandex yarn is the chenille yarn 35. Is set to about one-eighth of the thickness. For this reason, since the chenille yarn 35 is arranged with high density in the woven fabric constituting the cylindrical body 62, the surface is raised to the extent that it is not inferior to that of a normal velor material even without raising. Yes. Furthermore, a synthetic resin coating agent for suppressing fraying is applied to both side surfaces 62a in the axial direction of the cylindrical body 62 (cut surfaces of the fabric constituting the cylindrical body 62). The inner diameter of the cylindrical body 62 is set to be slightly smaller than the outer diameter of the main body roller 61, and the lengths of the main body roller 61 and the cylindrical body 62 in the axial direction are set to be the same. .

  When the main body roller 61 and the cylindrical body 62 are joined to form the wheel 60, first, double-sided adhesive tape is adhered to several locations on the outer peripheral surface 61a of the main body roller 61 (or an adhesive is applied). ). In this state, the cylindrical body 62 is placed on the outer peripheral surface 61 a of the main body roller 61 in a state of being elastically deformed until the inner diameter of the cylindrical body 62 becomes larger than the outer diameter of the main body roller 61. Then, the inner peripheral surface 62b of the cylindrical body 62 is brought into close contact with the outer peripheral surface 61a of the main body roller 61 by the elastic restoring force of the cylindrical body 62, so that the wheel 60 is formed.

  At this time, if the positions of the main body roller 61 and the cylindrical body 62 are displaced in the axial direction, it is necessary to correct the displacement by pulling the cylindrical body 62 in the axial direction, but the cylindrical body 62 is almost elastic in the axial direction. Since there is no property, the deviation can be easily corrected. Incidentally, when the cylindrical body 62 has elasticity also in the axial direction, the cylindrical body 62 is stretched when the cylindrical body 62 is pulled in the axial direction to correct the deviation, and the deviation can be corrected. It becomes difficult.

  Now, when the head 80 of the vacuum cleaner to which the wheel 60 formed as described above is attached is moved along the floor surface F that is the surface to be cleaned, the wheel 60 rolls on the floor surface F, The movement of the head 80 becomes smooth. At this time, since the wheel 60 is obtained by covering the main body roller 61 with the cylindrical body 62, the cylindrical body 62 contacts the floor surface F without the main body roller 61 contacting. For this reason, the cushioning property of the cylindrical body 62 prevents the floor surface F from being damaged by the wheels 60, and the sound generated when the wheels 60 roll on the floor surface F is reduced.

According to the second embodiment described in detail above, the following effects are exhibited.
(4) The cylindrical body 62 has elasticity (stretchability) in the radial direction and hardly has elasticity in the axial direction. For this reason, the cylindrical body 62 can be easily covered with the main body roller 61 by elastically deforming the cylindrical body 62 so as to expand the diameter. In addition, when the position of covering the cylindrical body 62 with respect to the main body roller 61 is shifted in the axial direction, the cylindrical body 62 hardly extends even if the cylindrical body 62 is pulled in the axial direction toward the normal position. The shift can be easily corrected.

  (5) Since the cylindrical body 62 is made of a woven fabric, it has no seam in the circumferential direction. For this reason, when the wheel 60 rolls on the floor surface F, it can suppress that the textile fabric which comprises the cylinder 62 is frayed. That is, the durability of the cylindrical body 62 can be improved.

(Third embodiment)
Hereinafter, the third embodiment of the present invention will be described focusing on differences from the second embodiment.
As shown in FIGS. 9 (a) and 9 (b), the wheel 70 as the sliding contact member of the third embodiment has a cylindrical body 62 elongated in the axial direction in the wheel 60 of the second embodiment. Caps 71 are fitted into the body roller 61 from both sides in the axial direction, with both axial ends of 62 covering both side surfaces of the body roller 61 in the axial direction.

  The cap 71 includes a cylindrical fitting portion 71a configured to be fitted into the main body roller 61, and an annular flange portion 71b provided on one end side in the axial direction of the fitting portion 71a. The outer diameter of the flange portion 71 b is set to be larger than the inner diameter of the main body roller 61 and smaller than the outer diameter of the main body roller 61. In the wheel 70, an adhesive or double-sided adhesive tape is interposed at several locations between the inner peripheral surface of the main body roller 61 and the outer peripheral surface of the fitting portion 71 a of the cap 71.

According to the third embodiment described in detail above, the following effects are exhibited.
(6) Since both the side surfaces 62a of the cylindrical body 62 in the axial direction (cut surfaces of the woven fabric constituting the cylindrical body 62) are respectively protected by the caps 71, the wheel 70 is coated with a coating agent on the both side surfaces 62a. No fraying can be suppressed.

(7) Since each cap 71 is fitted in the main body roller 61, the wheel 70 can be improved in strength than the wheel 60 of the second embodiment.
(8) In the wheel 70, since both ends of the cylindrical body 62 in the axial direction are sandwiched between the main body roller 61 and the cap 71, it is possible to effectively suppress the displacement of the cylindrical body 62.

(Example of change)
Each of the above embodiments can be modified and embodied as follows.
-In 2nd and 3rd embodiment, the cylinder 62 may be comprised by the knitted fabric which knitted the chenille yarn 35 and the spandex yarn.

-In 2nd and 3rd embodiment, you may use the wheels 60 and 70 as casters, such as a trolley | bogie, a desk, and a chair.
The rotary brush 22 may be configured by attaching the cylindrical body 62 of the second and third embodiments to the rotary body 31 of the first embodiment. In this case, the brush body 32 is omitted.

  The wheel 60 of the second embodiment may be manufactured by insert-molding the main body roller 61 in the cylindrical body 62 using the cylindrical body 62 as an insert product. In this case, as shown in FIG. 10, the cylindrical body 62 is constituted by a double woven fabric (or a double knitted fabric), and the inner portion 62A is woven by polypropylene yarn. The outer portion 62B is woven (knitted) with a yarn made of polyamide. The cylindrical body 62 formed in this way is set in a mold (not shown), molten polypropylene is injected into the cavity S in the mold, and then cooled and solidified to form a cylindrical body. A wheel 60 in which a main body roller 61 made of polypropylene is integrally formed in 62 is manufactured. In this case, since the inner part 62A of the cylindrical body 62 is made of the same material as the polypropylene injected into the cavity S, the injected polypropylene and the inner part 62A of the cylindrical body 62 are melted together. Therefore, since the main body roller 61 and the inner portion 62A of the cylindrical body 62 are welded with the same kind of material when the main body roller 61 is molded, the main body roller 61 and the cylindrical body 62 are firmly joined.

  As shown in FIG. 11, a roll brush 52 formed by laminating a belt-like woven fabric 51 (which may be a knitted fabric) as a slidable contact portion around the surface of a round bar-shaped shaft member 50 for one round is slidably contacted. The usage of the sliding contact member may be changed. In this case, as shown in FIG. 12, the woven fabric 51 only needs to use the chenille yarn 35 for at least one of the warp yarn and the weft yarn, but either the warp yarn or the weft yarn constituting the fabric 51. When one of the chenille yarns 35 is used, it is preferable that the woven fabric 51 is woven so that the chenille yarn 35 is exposed to 70% or more on the surface (outer surface) that is in sliding contact with the contacted portion.

  The roll brush 52 configured as described above is charged, for example, by charging the surface of the photosensitive drum by slidingly contacting the surface of the photosensitive drum (not shown) rotatably supported in the image forming apparatus (not shown). It can be used for a brush or a static elimination brush that neutralizes the photosensitive drum by being in sliding contact with the surface of the photosensitive drum charged by the charging brush.

  When providing a step on the surface of the fabric 51 in the roll brush 52, the length of the flower yarn 41 in each chenille yarn 35 constituting the fabric 51 is longer than that of the other chenille yarn 35, as shown in FIG. 13. What is necessary is just to mix a desired number of short things and long things in a desired position. Even when the woven fabric 51 in the roll brush 52 is knitted, when the step is provided on the surface of the knitted fabric, the length of the flower yarn 41 in each chenille yarn 35 constituting the knitted fabric is the same as in the case of the woven fabric 51. What is necessary is just to mix what is shorter or longer than other chenille yarns 35 in a desired position. In addition, when providing the level | step difference in the surface of a knitted fabric, when the ease of the operation | work is considered, it is preferable to make this knitted fabric into warp knitting instead of horizontal knitting.

  Thus, if the roll brush 52 is configured by winding the woven fabric 51 or the knitted fabric including the chenille yarn 35 around the shaft member 50, the shearing process or the like can be performed only by changing the length of the flower yarn 41 of each chenille yarn 35. A step can be easily provided on the surface of the fabric 51 or the knitted fabric constituting the sliding contact portion without requiring a troublesome work.

  -In the roll brush 52 of FIG. 11, you may form the textile fabric 51 or knitted fabric which comprises a sliding contact part in a cylinder shape. By doing so, it is possible to eliminate the joint of the woven fabric 51 or the knitted fabric that constitutes the sliding contact portion of the roll brush 52. In this case, the heat shrink yarn is combined with the fabric 51 constituting the sliding contact portion or the yarn constituting the knitted fabric, and the fabric 51 or the knitted fabric is heated with the shaft member 50 inserted into the tubular fabric 51 or knitted fabric. The fabric 51 or the knitted fabric may be brought into close contact with the shaft member 50 by heat shrinking. Alternatively, the shaft member 50 is attached to the tubular woven fabric 51 or the knitted fabric in which the elastic yarn is combined with the fabric constituting the sliding contact portion or the yarn constituting the knitted fabric and the inner diameter is smaller than the outer diameter of the shaft member 50. The fabric 51 or the knitted fabric may be brought into close contact with the shaft member 50 by inserting against the elastic force of the stretchable yarn.

  In the roll brush 52 of FIG. 11, the chenille yarn 35 may be directly wound around the surface of the shaft member 50 as a sliding contact portion instead of the belt-like woven fabric 51 or the knitted fabric. In this case, a step can be easily provided in the sliding contact portion by winding a plurality of chenille yarns 35 having different lengths of the flower yarn 41 around the shaft member 50.

  The fabric 51 shown in FIG. 12 in which the chenille yarn 35 is used for at least one of the warp yarn and the weft yarn may be used as the sliding contact member, and the use of the sliding contact member may be changed. The fabric 51 as the sliding contact member configured as described above can be used as a pad of a vacuum cleaner suction tool 53 as shown in FIG. 14, for example. In this case, the surface of the fabric 51 that is in sliding contact with the surface to be cleaned functions as a sliding contact portion. When either one of the warp yarn and the weft yarn constituting the woven fabric 51 is the chenille yarn 35, the chenille yarn 35 is exposed to 70% or more on the surface (outer surface) that is in sliding contact with the surface to be cleaned. Thus, the woven fabric 51 is preferably woven.

  As shown in FIG. 15, the surface of the base cloth 34 of the brush body 32 opposite to the fluff portion 36 is sequentially attached to the surface of the round bar-shaped shaft member 54 with a double-sided adhesive tape (not shown). A roll brush 55 formed by spirally winding the brush body 32 may be used as a sliding contact member, and the usage of the sliding contact member may be changed. The roll brush 55 configured in this way can be used, for example, as a filter cleaning brush equipped in a filter cleaning device (not shown). The roll brush 55 is driven by driving means (not shown) in a state where the fluff portion 36 as a sliding contact portion is in sliding contact with the surface of a filter of an air conditioner (not shown) as a contacted portion, for example. By rotating and driving, dust or the like adhering to the surface of the filter is scraped off and removed.

  As long as the object that is in sliding contact with the sliding contact member moves relative to the sliding contact member, the sliding contact member may be used in a stationary state. May be used as a sealing material 56 for an image forming apparatus as shown in FIG. The sealing material 56 includes a brush body 32, a support layer 57 made of a foam material provided on a surface of the base fabric 34 of the brush body 32 opposite to the fluff portion 36, and the brush body 32 in the support layer 57. Is provided with an adhesive layer 58 made of an adhesive provided on the opposite surface.

  The sealing material 56 is provided at the end of a long plate-like blade (not shown) that scrapes off toner from the surface of a photosensitive drum (not shown) that is rotatably supported in an image forming apparatus (not shown). The adhesive layer 58 is attached to the support so that the brush body 32 is the uppermost layer. As a result, the upper surface of the sealing material 56 is in contact with the surface as the contacted portion at both ends in the axial direction of the photosensitive drum (not shown), so that the fluff portion 36 is in sliding contact with the gap between the support and the photosensitive drum. It functions to collect and block the toner that is about to leak out to seal the toner leakage.

In the first embodiment, the chenille yarn 35 may be configured such that the core yarn 38 and the presser yarn 39 are made non-conductive, and the conductive yarn is separately put on the core yarn 38 and the presser yarn 39.
In the first embodiment, the flower yarn 41 of the chenille yarn 35 may be composed of a combination of a conductive yarn and a non-conductive yarn. In this way, static electricity accumulated in the fluff portion 36 can be reduced, the amount of expensive conductive yarn used can be reduced, and the product cost can be reduced.

  In the first embodiment, all or part of the weft yarns 34a, the warp yarns 34b, and the coating layer 37 constituting the base fabric 34 of the brush body 32 may be non-conductive. In this way, the conductivity of the brush body 32 as a whole cannot be ensured. However, as long as the chenille yarn 35 itself has conductivity, a certain level of static electricity reduction effect can be expected due to the corona discharge effect.

  -In 1st Embodiment, you may comprise the brush body 32 with a loop pile fabric instead of a cut pile fabric. In this case, a chenille yarn 35 constituting a sliding contact portion is woven into the base fabric 34 in a loop shape. Therefore, the sliding contact portion is constituted by the raised portion of the loop pile fabric.

  -In 1st Embodiment, the fluff part 36 of the brush body 32 should just be comprised by the chenille yarn 35 at least one part, and is mixed with the chenille yarn 35 and normal thread | yarn (filament thread | yarn, span yarn, etc.). It may be.

In the first embodiment, the chenille yarn 35 does not necessarily have conductivity. That is, the entire chenille yarn 35 may be made of non-conductive fibers.
In the second and third embodiments, the chenille yarn 35 used for the fabric constituting the cylindrical body 62 is changed to a general bulky spun yarn (for example, having a thickness equivalent to 500 to 1000 dtex). Also good. In this way, the manufacturing cost of the wheel 60 can be reduced as compared with the case where the chenille yarn 35 is used for the fabric constituting the cylindrical body 62. Further, the cushioning property of the bulky spun yarn constituting the cylindrical body 62 can suppress the floor surface F from being damaged by the wheel 60, and can also generate a sound generated when the wheel 60 rolls on the floor surface F. Can be small. Furthermore, since the cylindrical body 62 is a cylindrical woven product (or a cylindrical knitted product) including bulky spun yarn, no seam is generated in the circumferential direction. Therefore, it is possible to prevent the tubular woven product from being peeled off from the outer peripheral surface 61a of the main body roller 61 or the entry of dust or the like between the cylindrical woven product and the outer peripheral surface 61a of the main body roller 61. The durability of can be improved.

  In the second and third embodiments, the cylindrical body 62 is constituted by a double-woven fabric (or a double-knitted fabric) and the inner portion of the fabric is a heat-welded yarn (for example, a low melting point) The cylindrical body 62 may be thermally welded to the main body roller 61 by applying a heat treatment such as a steam treatment after the cylindrical body 62 is covered with the main body roller 61. In this way, since the cylindrical body 62 can be joined to the main body roller 61 without touching the adhesive surface or the adhesive surface, the cylindrical body 62 can be joined to the main body roller 61 with a double-sided adhesive tape or adhesive. The workability at the time of manufacturing the wheel 60 can be improved.

Further, the technical idea that can be grasped from the above embodiment will be described below.
(A) The sliding contact portion is constituted by a raised portion of a loop pile fabric in which the chenille yarn is used as a pile yarn. The sliding contact member according to claim 1 or 2, .

  (B) In an image forming apparatus, the image forming apparatus is used for a charging brush that charges the surface of the photosensitive drum by sliding the sliding contact portion on the surface of the photosensitive drum that is rotatably supported. The slidable contact member according to any one of? 4 and (a) above.

  (C) The image forming apparatus is used for a static elimination brush that neutralizes the photosensitive drum by the sliding contact portion being in sliding contact with the surface of the photosensitive drum that is rotatably supported and charged. The sliding contact member as described in any one of Claims 1-4 and said (I).

  (D) The sliding contact portion is rotatable in a state of being in sliding contact with the surface of the filter, and used for a filter cleaning brush for removing dust adhering to the surface of the filter. The sliding contact member as described in any one of Claim 4 and said (A).

  (E) In the image forming apparatus, the sliding contact portion is placed on the surface of the photosensitive drum on a support provided at the end of a long plate-like blade that scrapes off toner from the surface of the photosensitive drum rotatably supported. Used as a sealing material that is attached so as to be in sliding contact, and that collects and blocks toner that leaks from the end of the blade through the gap between the support and the photosensitive drum, and blocks toner leakage. The slidable contact member according to any one of claims 1 to 4 and the above (a).

  (F) The flower yarn constituting the chenille yarn is formed by combining a conductive yarn and a non-conductive yarn, according to any one of claims 1 to 4 and (a) above. The sliding contact member as described.

  DESCRIPTION OF SYMBOLS 11,80 ... Head of vacuum cleaner, 31 ... Rotating body, 32 ... Brush body as sliding contact member constituting cut pile fabric, 35 ... Chenille yarn constituting sliding contact portion, 36 ... Sliding constituting pile yarn As a contact portion, a fluff portion 51, a slidable contact member and a fabric as a slidable contact portion, 52, 55, a roll brush as a slidable contact member, 56, a sealing material as a slidable contact member, 60, 70, a slidable contact member. No. wheel, 62... Cylindrical body as a sliding contact portion, F... Floor surface to be cleaned as a contacted portion.

Claims (8)

A sliding contact member provided with a sliding contact portion used in a state of relative movement while being in sliding contact with a contacted portion,
The sliding contact portion is made of a thread including at least a chenille thread. The sliding member according to claim 1, wherein at least a part of the chenille yarn has conductivity. The sliding contact member according to claim 1 or 2, wherein the sliding contact portion is constituted by a raised portion of a cut pile fabric using the chenille yarn as a pile yarn. The slidable contact member according to claim 1 or 2, wherein the slidable contact portion is formed of a woven fabric or a knitted fabric including the chenille yarn. The sliding contact member according to claim 4, wherein the woven fabric or the knitted fabric is formed in a cylindrical shape. The sliding contact member according to claim 5, wherein the woven fabric or the knitted fabric includes elastic fibers. The sliding member according to claim 6, wherein the elastic fiber extends along a circumferential direction of the woven fabric or the knitted fabric formed in a cylindrical shape. The slide according to any one of claims 1 to 7, wherein the slider is attached to a rotating body rotatably accommodated in a head of a vacuum cleaner for sucking dust on a surface to be cleaned. Contact member.

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