JP3116265U - Rotating shaft powder seal piece with engaging portion for positioning - Google Patents

Abstract

An object of the present invention is to greatly simplify the work of attaching a powder seal piece to the inner surface of a concave portion of a bearing, and to remarkably improve replacement work efficiency and mounting accuracy.
An engagement recess 10a is provided on the outer peripheral surface of the powder seal piece, and an engagement protrusion 10b is relatively provided on the inner surface of the bearing recess 6, and the powder seal piece S is inserted into the bearing recess 6. The engaging convex portion 10b is engaged with the engaging concave portion 10a, and the powder seal piece S is positioned and attached to the inner surface of the bearing concave portion 6.
[Selection] Figure 3

Description

  The present invention provides a seal portion so that powder (e.g., toner) adhering to the peripheral surface of a rotating shaft of a toner cartridge or the like in a copying machine, fax machine, printer, etc., does not enter the bearing portion and hinder rotation. It is related to the powder seal piece that is installed inside the bearing recess and seals the penetration of powder,

An engagement concave portion is provided on the outer peripheral surface of the powder seal piece, and an engagement convex portion for positioning and attaching the powder seal piece by engaging with the engagement concave portion on the inner surface of the bearing concave portion is relatively provided,

The powder seal piece is inserted into the bearing recess, the engagement recess of the powder seal piece is engaged with the engagement protrusion of the inner surface of the bearing recess, and the powder seal piece is positioned and attached to the inner surface of the bearing recess. It is equipped with
It is characterized in that workability such as new attachment of a powder seal piece to the bearing concave portion of the seal portion and maintenance replacement is remarkably improved.

  Conventionally, for example, in a copying machine, a fax machine, a printer, etc., a toner cartridge in which a rotating shaft such as a magnet roller or a transfer roller is set in a rectangular box-like case filled with powder (for example, toner, ie, carbon fine powder). Although it is widely used, the inside of the bearing portion 3 is usually used so that the powder 2 adhering to the peripheral surface of the rotating shaft 1 does not enter the bearing portion 3 and obstruct rotation by long-term use. (For example, the right and left side plates 4 of the toner tank) are provided with a seal portion 5 for sealing the powder 2 so that the powder 2 does not leak from the seal portion 5 to the bearing portion 3 side. (See Figures 4-6)

  The seal portion 5 forms a bearing recess 6 such as a J-shape, U-shape (illustrated example), or C-shape for fitting and attaching the rotary shaft 1 from the front side or the upper surface side of the toner case or the like. A powder seal piece S1 for sealing the leakage of the powder 2 is attached to the peripheral surface.

In general, powder seal pieces are elastic and have extremely low frictional resistance, excellent durability, and high density entangled fibers effectively prevent fine particles from entering. The felt piece 8 made of the synthetic resin polytetrafluoroethylene fiber having the above-mentioned characteristics is used. However, since it is expensive, it can be used in combination with a holder 9 made of another material such as a foamed plastic piece. It is customary.

In addition to the polytetrafluoroethylene felt piece 8 described above, a polytetrafluoroethylene woven fabric such as a velvet woven fabric in which polytetrafluoroethylene fibers are woven in a raised state on the surface side is provided, and the woven fabric is cut out. It is also practiced to use a processed powder seal piece.

The powder seal piece is slightly different depending on the manufacturer. For example, the powder seal piece is about 10 mm wide, about 45 mm long, about 1 mm thick polytetrafluoroethylene felt piece 8 or polytetrafluoroethylene woven cloth piece and about 3 mm thick. The holder 9 is laminated in a state where it is not easily peeled off, and one side of the double-sided adhesive film 7 is bonded to the back surface (the release paper 7a is bonded to the other side),
Conventionally, the powder seal piece S1 is attached to the inner peripheral surface of the bearing recess 6 of the seal portion 5 by adhering the double-sided adhesive film 7 by peeling off the release paper 7a.
Thus, the powder seal piece of the present invention is substantially the same in size, shape and the like as before.
JP 2001-59575 A JP 2001-208206 A Utility Model Registration No. 3105832

  Since the conventional powder seal piece is formed by adhering a double-sided adhesive film to the back surface of a laminate of a polytetrafluoroethylene felt piece and a foamed plastic piece etc. In addition to the cost of materials, there is a problem that a troublesome operation requiring skill and labor is indispensable to manually peel off the release paper one by one and attach the powder seal pieces to the inner peripheral surface of the bearing recess.

Also, during maintenance repairs or recycling of toner cases, etc., it is necessary to peel off the old powder seal piece from the inner peripheral surface of the bearing recess and replace it with a new powder seal piece. As the powder seal piece was integrally fixed to the inner peripheral surface of the bearing recess with a double-sided adhesive film, it was difficult to cleanly remove it, and the debris always remained, so a new powder seal piece Cannot be accurately and neatly adhered and attached, and there is a problem that powder leakage cannot be sufficiently sealed.

Therefore, the present invention stops fixing the conventional powder seal piece with a double-sided adhesive film, simply inserts the powder seal piece into the bearing recess, and inserts the inner surface of the bearing recess into the engagement recess of the powder seal piece. By engaging the engaging protrusions of the bearings, the powder seal pieces can be positioned and attached to the inner surfaces of the bearing recesses, thereby greatly simplifying and replacing the powder seal pieces to the inner surfaces of the bearing recesses. The efficiency and mounting accuracy are greatly improved to solve the above conventional problems.

That is, the present invention relates to a powder seal piece used for sealing powder leakage by being attached to the inner surface of the bearing recess of the seal portion.
The outer peripheral surface of the powder seal piece is provided with an engagement concave portion, and the engagement concave portion is relatively provided on the inner surface of the bearing concave portion to engage with the engagement concave portion to position and attach the powder seal piece. The problem is solved by the powder seal piece of the rotating shaft provided with the engaging portion for positioning.

Since the conventional powder seal piece is provided by adhering a double-sided adhesive film, the material cost of the double-sided adhesive film is required, and the powder seal piece is manually peeled off one by one to remove the release paper. There was a problem that required troublesome work that required skill and labor to attach and attach to the inner peripheral surface,
In this respect, the powder seal piece of the present invention simply inserts the powder seal piece into the bearing recess, engages the engagement convex portion of the inner surface of the bearing recess with the engagement recess of the powder seal piece, Compared to the conventional method, the installation of the powder seal piece on the inner surface of the bearing recess is greatly simplified, and the replacement work efficiency and installation accuracy are greatly improved. There are a lot of possible effects.

Also, conventionally, when maintenance repair or recycling of toner cases, etc., it is necessary to peel off the powder seal piece from the inner peripheral surface of the bearing recess and replace it with a new powder seal piece. Because the powder seal piece was fixed integrally to the inner peripheral surface of the bearing recess with a double-sided adhesive film, it could not be removed neatly, leaving a debris, and attaching the new powder seal piece accurately and neatly It was difficult, so there was a problem that the powder leaked,

In this respect, the powder seal piece of the present invention is fixed by the double-sided adhesive film, and is simply inserted into the bearing recess, and the engagement recess of the powder seal piece is engaged with the inner surface of the bearing recess. The powder seal piece is positioned and attached to the inner surface of the bearing recess by engaging the mating convex part, so the removal of the old powder seal piece is quite simple, and the new powder seal piece is extremely simple. Therefore, the replacement work efficiency and the mounting accuracy are remarkably improved, and the powder can be effectively prevented from entering and leaking.

In the powder seal piece used to seal the leakage of powder attached to the inner surface of the bearing recess of the seal part,
A protrusion (engagement protrusion) 10b that includes a hole (engagement recess) 10a on the outer peripheral surface of the powder seal piece and that engages with the hole 10a and positions and attaches the powder seal piece S to the inner surface of the bearing recess 6 Relatively
The powder seal piece S is inserted into the bearing recess 6, the protrusion 10 b on the inner surface of the bearing recess 6 is engaged with the hole 10 a of the powder seal piece S, and the powder seal piece S is attached to the inner surface of the bearing recess 6. The powder seal piece S of the rotating shaft provided with the engaging part for positioning provided so that it may be positioned and attached.

  1 is a longitudinal sectional front view, a plan view, and a right side view of a powder seal piece according to Embodiment 1 of the present invention. FIG. 2 is a partially cut front view in which the powder seal piece is attached to a bearing recess of the seal portion. FIG. 3 is a sectional view taken along line AA in FIG. 2.

The embodiment of the powder seal piece S of the present invention will be described. In the powder seal piece used to seal the leakage of powder by being attached to the inner surface of the bearing recess 6 of the seal portion 5,
An engagement recess 10a is provided on the outer peripheral surface of the powder seal piece, and an engagement protrusion 10b for positioning and mounting the powder seal piece S by engaging with the engagement recess 10a on the inner surface of the bearing recess 6 is relatively provided. A rotary shaft powder seal piece S provided with an engaging portion for positioning,

The engagement recess 10a provided on the outer peripheral surface of the powder seal piece S is at least one hole (through), hole (bottomed) (illustrated example), recess, notch, groove, slit, etc.
The engaging convex portion 10b provided on the inner surface side of the bearing concave portion 6 is a protrusion (illustration example), a convex strip, a protrusion, and the like provided relatively to the engaging concave portion 10a.

The powder seal piece S is inserted into the bearing recess 6, the engagement recess 10 a of the powder seal piece S is engaged with the engagement protrusion 10 b on the inner surface of the bearing recess 6, and the powder on the inner surface of the bearing recess 6. It is a powder seal piece of a rotating shaft provided with an engaging portion for positioning, which is provided to position and attach the seal piece S.

Although not shown, the powder seal piece of the present invention is inserted into the bearing recess, and the engagement protrusion of the inner surface of the bearing recess is engaged with the engagement recess of the powder seal piece. When positioning and attaching the body seal piece, a small piece of double-sided adhesive film (a piece that does not interfere with the subsequent peeling and replacement) is attached to a part of the surface of the powder seal piece, for example, the center. If this is done, the powder seal piece can be positioned and attached more accurately and easily.

  In the present invention, the powder seal piece of the present invention is inserted into various bearing recesses, the engagement protrusions of the inner surface of the bearing recess are engaged with the engagement recesses of the powder seal piece, and the powder seal is applied to the inner surface of the bearing recess. Since it is provided to position and attach the piece, it is not limited to the bearing portion of the rotating shaft of the above-described copying machine, fax machine, printer, etc., and is widely attached inside the bearing portion of various rotating shafts, It can be widely used as a powder seal piece for sealing powder intrusion.

The longitudinal cross-sectional front view, top view, and right view of the powder seal piece of an Example of this invention. The partially cut front view which attached the powder seal piece of FIG. 1 to the bearing recessed part of the seal part. FIG. 3 is a cross-sectional view taken along line AA in FIG. 2. The longitudinal cross-sectional front view, top view, and right view of the powder seal piece of a prior art example. The partially cut front view which attached the powder seal piece of FIG. 4 to the bearing recessed part of the seal | sticker part. BB sectional drawing of FIG.

Explanation of symbols

S Powder seal piece S1 of the present invention embodiment Conventional powder seal piece 1 Rotating shaft 2 Powder 3 Bearing portion 4 Side plate 5 Seal portion 6 Bearing recess 7 Double-sided adhesive tape 7a Release paper 8 Polytetrafluoroethylene felt piece 9 Holder 10a Engaging recess (Example, hole)
10b Engaging protrusion (Example, protrusion)

Claims (2)

In the powder seal piece used to seal the leakage of powder by attaching to the bearing recess inner surface of the seal part,
The outer peripheral surface of the powder seal piece is provided with an engagement concave portion, and the engagement concave portion is relatively provided on the inner surface of the bearing concave portion to engage with the engagement concave portion to position and attach the powder seal piece.
A powder seal piece of a rotating shaft provided with an engaging portion for positioning. The engagement recess provided on the outer peripheral surface of the powder seal piece is at least one hole (penetration), hole (bottomed), recess, notch, groove, slit, etc.
The engagement convex portion provided on the inner surface of the bearing concave portion is a protrusion, a ridge, a protrusion, etc., provided relatively to the engagement concave portion,
The powder seal piece is inserted into the bearing recess, the engagement protrusion of the inner surface of the bearing recess is engaged with the engagement recess of the powder seal piece, and the powder seal piece is positioned and attached to the inner surface of the bearing recess. Is what we have,
2. A powder seal piece for a rotary shaft, comprising the positioning engaging portion according to claim 1.