JP2002112503A - Motor and apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve reuse rate of a motor by removing the causes which include the fact that the reuse rate of the motor did not rise, because it is difficult to reuse the motor of a system that extracts, power from teeth parts formed on a rotational shaft as the motor of a system that takes out power from a sprocket wheel fixed on the rotational shaft. SOLUTION: The teeth parts and a joint part of a power-transmitting member are provided on the rotatary shaft of a motor. Also, the brush holder of a brush motor is fixed by a fixing means that enables it to remove the holder, without causing plastic deformation or destruction of the motor body.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a technique for reusing a motor built in a device.

[0002]

2. Description of the Related Art In many devices, a built-in motor has a longer life than a device. Therefore, it has been practiced to separate the motor from the equipment that has reached the end of its life and reuse the separated motor.

[0003]

However, when the motor is reused, there are the following problems.

[0004] As a method of extracting the driving force from the motor,
A method in which a power transmission member such as a gear is coupled to the rotating shaft to take out the driving force from the gear, and a method in which teeth are formed in the rotating shaft itself of the motor, and a gear formed by a tooth profile portion formed in the rotating shaft. There is a method to take out power. When the motor is reused, it is difficult to reuse it as a motor having a different power take-out method, which may hinder the reuse, which is an obstacle to the reuse of the motor. For example,
When the latter type of motor is reused as the former type of motor, there is a groove for coupling the gears, so that a tooth formed on the rotary shaft lacks and is used for power transmission. Can not do.

[0005] In addition, the life of the brush motor is considered to be relatively short, and the reuse of the brush motor has not progressed much.

To reuse a brush motor, it is necessary to replace a deteriorated brush. As shown in FIG. 1, a conventional brush motor is provided with a holder fixing piece M21a on an outer frame M21 as fixing means for fixing a brush holder M23 holding a brush M24 on an outer frame M21 forming an outer shape of a motor body of the motor M2. The brush holder M23 is fixed to the motor body by engaging the recess M23a of the brush holder M23 by plastically deforming the holder fixing piece M21a.

Therefore, in order to remove the brush holder M23 for replacing the brush, the holder fixing piece M21a must be removed.
Needed to be plastically deformed or destroyed. For this reason, the motor in which the holder fixing piece M21a is plastically deformed or broken by brush replacement cannot be reused, and it is extremely difficult to reuse the brush motor.

SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned problem in reusing a motor and to promote the reuse of a motor.

[0009]

The object of the present invention described above is achieved by the following invention.

[0010] 1. A motor having a rotary shaft having a tooth profile and a power transmission member coupling portion.

2. The motor according to claim 1, further comprising a power transmission member fixed to the power transmission member coupling portion.

3. An apparatus comprising: a motor having a rotating shaft provided with a tooth portion and a power transmission member coupling portion; and a power transmission portion for extracting power from the tooth portion.

4. A motor having a rotary shaft having a toothed portion and a power transmission member coupling portion, a power transmission member fixed to the power transmission member coupling portion, and a power transmission portion for extracting power from the power transmission member. Equipment to do.

5. A motor comprising: a brush holder fixed to a motor main body so as to be replaceable without plastic deformation or destruction of the motor main body.

6. 6. The motor according to the item 5, wherein the brush holder is fixed to the motor main body by fixing means made of a screw.

[7] The motor according to claim 5, wherein the brush holder is fixed to the motor main body by fixing means using elastic deformation.

8. An apparatus comprising: a motor having a brush holder which is exchangeably fixed to the motor main body without plastically deforming or destroying the motor main body.

9. 9. The device according to the item 8, wherein the brush holder is fixed to the motor main body by a fixing unit including a screw.

10. 9. The apparatus according to the item 8, wherein the brush holder is fixed to the motor main body by fixing means using elastic deformation.

[0020]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS (1) Image Forming Apparatus An embodiment in which the present invention is applied to an image forming apparatus as one of information devices will be described with reference to FIG. FIG. 2 is a diagram illustrating the image forming apparatus according to the embodiment of the present invention.

Reference numeral 1 denotes an automatic document feeder for loading a large number of documents and transporting them one by one to an image reading position. An image reading unit 2 reads an image of a document conveyed by the automatic document feeder 1 or a document placed on the document table 23. The image reading unit 2 includes an exposure lamp 21 for illuminating a document, an image forming optical system 22 including a mirror and a lens, a document table 23 including a glass plate on which the document is placed, and an image pickup for converting optical information of an image into an electric signal. An element 24 is provided.

Reference numeral 3 denotes an image forming unit for forming an image on recording paper. The image forming unit 3 includes a drum-shaped photoconductor 3 made of an organic photoconductor having a photoconductive layer formed on an aluminum base.
1. A charging section 32 composed of a scorotron charger having a control electrode and a discharge electrode, an image writing section 33 having a laser diode, a polygon, a mirror, and a lens (not shown), a two-component developer, and an exposed portion of a photoconductor 31 Developing section 34 for performing reversal development for attaching toner to the toner, transfer section 35 composed of a corotron charger having discharge electrodes, separating section 36 composed of a corotron charger having discharge electrodes, transport for transporting recording paper on which an image is formed A portion 37, a heat source composed of a halogen lamp, a heating roller having a heat-resistant release layer made of a fluororesin formed on an aluminum base, and a pressure roller having a heat-resistant elastic layer made of silicon rubber formed on an aluminum base. A fixing unit 38, a cleaning unit 39 having a cleaning blade made of urethane rubber and a collected toner conveying screw, and Made of a light diode array, and a pre-charge exposure unit 40 for uniformly exposing the photoreceptor 31.

Reference numeral 5 denotes a recording paper transport unit which transports the recording paper to the image forming unit 3 and discharges the recording paper on which the image is formed. The recording paper transport unit 5 includes an upper tray 51, a lower tray 52, large capacity trays 53 and 54, a paper feed unit 55, and a manual tray 5.
6, an ADU sheet feeding / conveying section 57 having a reverse conveying path for forming an image on the back surface, and a sheet discharge tray 58;

A document conveyed by the automatic document feeder 1 or a document placed on the document table 23 is read by the image reading section 2, and based on the image data obtained by the image reading, the upper limit trays 51 and 52. The image is formed on the recording paper fed from the large capacity 53 or 54 or the manual feed tray 55 and is discharged to the discharge tray 58. 59 is a caster.

Alternatively, an image is formed on a recording sheet based on image data transmitted from an external device such as another copying machine or a personal computer, and is discharged to a discharge tray 58.

(2) First Embodiment FIGS. 3 and 4 show a motor according to a first embodiment of the present invention.

The rotary shaft M10 of the motor M1 is provided with a tooth M10a for transmitting power and a groove M10b as a power transmitting member connecting portion formed for connecting a power transmitting member such as a gear, a pulley, a sprocket, or the like. Can be In the case where the motor M1 is used as a motor for driving the developer stirring member of the developing unit 34 in the first use, for example, FIG.
As shown in (a), the gear M11 is connected to the tooth profile M10a, and the power of the motor M1 is taken out to the power transmission unit DR.

When the motor M1 is reused as a drive source for driving the photosensitive member 31 or as a main motor, as shown in FIG. 3B, the gear M1 as a power transmitting member is provided in the groove M10b.
2, and the power of the motor M1 is taken out to the power transmission unit DR.

FIG. 4A shows that the gear M12 is connected to the rotating shaft M10.
5 shows another example of the means for combining. In this example, the gear M1
The gear M12 is connected and fixed to the rotation shaft M10 by penetrating the pin M14 into the hole provided on the rotation shaft M10 and the hole serving as a power transmission member connection portion provided on the rotation shaft M10.

FIG. 4B shows an example in which the positions of the tooth profile portion 10a and the groove 10b are changed on the shaft M10. In the first use of the motor M1, power is taken out from the gear M11 indicated by a solid line, and when the motor M1 is reused, the gear M1 indicated by a dotted line is used.
Power is taken from 2.

(3) Second Embodiment FIG. 5 shows a motor according to a second embodiment of the present invention.
5A is an exploded perspective view of a motor body and a brush holder, and FIG. 5B is an external view of the motor.

The motor M2 is a brush motor. The brush motor M2 includes a rotating shaft M20, a metal outer frame M21 for fixing a stator (not shown), and a slip ring M2.
2. It has a brush holder M23 made of resin, a brush M24 and a power supply terminal M25.

The motor body whose outer shape is formed by the outer frame M21 and the brush holder M23 are connected to the hole M2 of the outer frame M21.
The brush holder M23 is fixed to the motor body by being screwed into the screw hole M23a of the brush holder M23 through 1b and screwing the screw M26.

When reusing the motor M2, the brush holder M23 is removed and replaced with a new one.

As a fixing means other than the screw for fixing the brush holder M23 without plastically deforming or destroying the constituent parts of the motor body, for example, resin elasticity of the resin brush holder M23 can be used. In addition, fixing means for providing an engaging protrusion and engaging the engaging protrusion with a hole provided in the outer frame M21 can be used.

[0036]

According to any one of claims 1 to 4,
Reusing a motor used in a power transmission system that takes out power from a tooth profile directly formed on a rotating shaft into a power transmission system that takes out power from the power transmission member by fixing a power transmitting member to the rotating shaft. And vice versa, it is possible to improve the reuse rate of the motor incorporated in the device.

According to any one of claims 5 to 10,
Since the deteriorated brush can be replaced without causing deformation or destruction of the motor body, the brush motor can be reused, and the reuse rate of the motor is improved.

[Brief description of the drawings]

FIG. 1 is an exploded view of a conventional brush motor.

FIG. 2 is a diagram illustrating an image forming apparatus according to an embodiment of the present invention.

FIG. 3 is a diagram showing a motor according to the first embodiment of the present invention.

FIG. 4 is a diagram showing a motor according to the first embodiment of the present invention.

FIG. 5 is a diagram showing a motor according to a second embodiment of the present invention.

[Explanation of symbols]

 M1, M2 Motor M10, M20 Rotary shaft M10a Tooth profile M10b Groove M11, M12 Gear M13 Screw M14 Pin M21 Outer frame M21b Hole M22 Slip ring M23 Brush holder M23a Screw hole M24 Brush M26 Screw

Continuation of the front page F term (reference) 5H607 BB01 BB14 CC03 DD03 EE31 JJ05 5H613 AA02 BB04 BB15 BB24 GA12 GB02 KK04 KK05 PP02

Claims (10)

[Claims] 1. A motor having a rotary shaft having a toothed portion and a power transmission member coupling portion. 2. The motor according to claim 1, further comprising a power transmission member fixed to the power transmission member coupling portion. 3. An apparatus comprising: a motor having a rotary shaft having a tooth portion and a power transmission member coupling portion; and a power transmission portion for extracting power from the tooth portion. 4. A motor having a rotary shaft having a toothed portion and a power transmission member coupling portion, a power transmission member fixed to the power transmission member coupling portion, and a power transmission portion for extracting power from the power transmission member. Equipment characterized by having. 5. A motor, comprising: a brush holder fixed to the motor main body so as to be replaceable without plastic deformation or destruction of the motor main body. 6. The motor according to claim 5, wherein the brush holder is fixed to the motor main body by fixing means made of a screw. 7. The motor according to claim 5, wherein the brush holder is fixed to the motor body by fixing means utilizing elastic deformation. 8. An apparatus comprising a motor having a brush holder which is exchangeably fixed to the motor main body without plastically deforming or destroying the motor main body. 9. The apparatus according to claim 8, wherein the brush holder is fixed to the motor main body by fixing means including a screw. 10. The apparatus according to claim 8, wherein the brush holder is fixed to the motor main body by fixing means using elastic deformation.