JPH0733230Y2 - Supporting member for optical system moving body - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention slidably supports an optical system moving body of an image forming apparatus such as a copying machine, and supplies an lubricating oil to the sliding surface. Body support member.

[Conventional technology]

2. Description of the Related Art Conventionally, there is an image forming apparatus such as a copying machine that exposes a photoconductor by reciprocally moving a light source that constitutes a part of an optical mechanism and a reflecting mirror to scan a document surface. This moving body has guide rails (guide rods) arranged side by side on its left and right sides.
It is supported to reciprocate slidably on the top.

In order to ensure accurate exposure scanning, it is preferable that the sliding operation of the moving body is performed while reducing the frictional resistance generated with the sliding operation.

As means for reducing this frictional resistance, both ends of the moving body are brought into contact with guide rails or the like via ball bearings (Japanese Utility Model Laid-Open No. 62-116246), and sliding surfaces between the moving body and guide rods, etc. Lubricating oil applied to
No. 86428, No. 61-33039, No. 62-4114
No. 1) has been proposed.

Further, FIG. 6 uses a mounting means made of a special oily material having a small frictional resistance.

That is, a mounting means for the guide rod 52 is formed at one end of the moving bodies 31, 34 to which the halogen lamp 24, the reflection plate 25, etc. are mounted, and the contact surface between the mounting means and the guide rod 52 is accurate. In order to ensure a proper exposure scanning, the guide rod 52 is arranged to extend over substantially the entire circumference.

On the other hand, supporting members 53, 53 as supporting means for the guide rail 7 are attached to the other ends of the moving bodies 31, 34 with screws or the like. As the supporting members 53, 53, since the material of the attaching means is high in cost and difficult to process, ordinary members which are low in cost and easy to form are used.

Therefore, in order to reduce the frictional resistance caused by the sliding operation, the supporting members 53, 53 are provided on the contact surface 54 with the guide rail 7.
Is configured to supply lubricating oil to.

That is, as shown in FIG. 7 and FIG.
3 is a contact surface 54 for lubricating oil from the oil supply section 53 through the oil supply port 4.
Is configured to supply.

[Problems to be solved by the device]

However, in the case of contacting the guide rail via the ball bearing, the roller rolls on the guide rail, which causes noise. According to Japanese Utility Model Publication No. 51-86428, Japanese Utility Model Publication No. 61-33039, and Japanese Utility Model Publication No. 62-41141, the lubricating oil applying means and the moving body supporting means are separately configured, and thus cannot be made compact. For example, it is not easy to replace the lubricant holding member.

Further, the conventional supporting member 53 shown in FIGS. 6 to 8 is compact because the lubricating oil applying means and the supporting means for the moving body are integrally formed. However, since it is usually resin-molded, a protruding piece (sink) 55 is formed around the oil supply port 4 as shown in FIG. As a result, when the support member 53 is slid, the sinker 55 is scraped by the friction with the guide rail 7 and is accumulated in the oil supply port 4, the lubricating oil is no longer supplied, and scraped dust enters the contact surface 54, which causes noise. Is a problem. Moreover, it is difficult to form the sinker 55 so that the sinker 55 does not occur because of the small diameter of the filler port 4.

The present invention solves the above problems, and an object of the present invention is to provide a support member for an optical system moving body that prevents scraping of a sink and generation of noise due to the scraping.

[Means for Solving the Problems]

In order to achieve the above object, the present invention includes an oil supply port formed on the bottom surface of a support member to supply lubricating oil from an oil supply unit, and an optical system moving body that slidably reciprocates on a guide. In the support member of the optical system moving body supported by, the space portion is formed in the bottom surface portion of the support member so as to include the lower end of the oil supply port.

[Action]

According to the supporting member of the optical system moving body having the above-described configuration, since a wide space is interposed between the lower end of the oil supply port and the guide and the lower end surface and the guide are separated, there is no contact.

〔Example〕

FIG. 5 is a block diagram of a copying machine (image forming apparatus) using a supporting member for an optical system moving body according to the present invention.

The copying machine 21 has a contact glass 22 and a document holder 23 on the upper surface thereof, and has an optical mechanism L and an image forming means P inside.

The optical mechanism L includes a light source including a halogen lamp 24 and a reflecting plate 25, reflecting mirrors 26, 27, 28, 30 and a lens portion 29. Then, the light from the light source is reflected on the original on the contact glass 22, is guided to the lens portion 29 via the reflecting mirrors 26, 27, 28, and then passes through the reflecting mirror 30 and the following photosensitive drum 35.
To expose.

Further, the halogen lamp 24, the reflection plate 25 and the reflection mirror 26 are also provided.
Are integrally configured as the first moving body 31. This mobile
Similar to FIG. 6, one end 31 is slidably attached to a positioning guide rod (not shown) and, as shown in FIG. It is slidably supported on the rail 7. Then, the first moving body 31 is reciprocated along the guide rod by a drive mechanism (not shown), so that the halogen lamp 24
Light from the source scans the original surface.

The reflecting mirror 27 and the reflecting mirror 28 are integrally configured as a second moving body 34. Similar to the moving body 1, this moving body 34 has one end slidably attached to a guide rod, and the other end via the support member 2 having the same shape as the support member 1 through the guide rail 7.
It is slidably supported on the upper side, and is reciprocated in the same direction as the first moving body 31 by a driving mechanism, so that the reflected light from the document is guided to the lens section 29.

The image forming means P includes a photosensitive drum 35, a charging device 36, a blank lamp 37, a developing device 38, a transfer device 39, a separating device 40, a cleaning device 41, etc., and the electrostatic latent image exposed on the photosensitive drum 35. Is transferred to the paper. Further, as the paper feeding mechanism, a plurality of paper feeding cassettes 42, 42, paper feeding rollers 43, 43, conveying roller pairs 44, 45, and registration roller pair 46 are arranged in this order from the upstream side in the feeding direction.
As a result, the paper is fed to the photosensitive drum 35 and transferred. Then, as a fixing and discharging mechanism for the sheet after transfer, a conveyor belt 47, a fixing device 48, a discharging roller 49, a discharging tray 50 and the like are arranged.

Next, the first embodiment of the support member 1 will be described with reference to FIGS.
It will be described with reference to the drawings. Note that the support member 2 has the same shape as the support member 1, and a description thereof will be omitted.

The support member 1 includes an oil filler 3, an oil inlet 4, a space 5, and a drain groove 6. The oil supply section 3 is made of felt or the like and impregnated with lubricating oil. Also, the refueling unit 3
The upper surface of is open so that lubricating oil can be replenished if necessary.

The oil supply port 4 is penetrated from below the oil supply part 3 to the upper surface of the space part 5, and supplies the lubricating oil from the oil supply part 3 to the bottom surface 8 of the support member 1 which is the contact surface with the guide rail 7 via the space part 5. I am trying to do it.

The space portion 5 is interposed between the lower end surface 41 and the bottom surface 8 of the fuel filler opening 4 and is formed such that the surface of the space portion 5 is larger than the lower end surface 41 of the fuel filler opening 4 (see FIG. 3). . The interposition of the space 5 prevents the sink mark formed around the lower end surface 41 from coming into contact with the guide rail 7 and being shaved during resin molding.

The diameter of the oil supply port 4 is set so that the appropriate amount of the lubricating oil is gradually supplied to the bottom surface 8.

The discharge groove 6 penetrates along the bottom surface 8 from the space portion 5 to the front and rear surfaces 9 and 10, and the inner space portion 5 of the scrap generated when the support member 1 slides on the guide rail 7.
The amount accumulated in the above is discharged to the outside of the support member 1.

A mounting portion 11 is formed on the upper portion of the rear surface 10, and is fixed to the first moving body 31 with a screw or the like through a screw hole provided in the mounting portion 11. Further, a handle portion 12 is projectingly provided on the upper portion of the front surface 9.

As described above, the sink mark formed around the lower end surface 41 of the fuel filler port 4 during resin molding is prevented from being scraped by the interposition of the space portion 5. On the other hand, even if the bottom surface 8 of the support member 1 is scraped by sliding for a long period of time, the scraps are discharged from the space 5 through the discharge groove 6 to the outside of the support member 1.

In addition, in the above-mentioned embodiment, the discharge groove 6 is formed from the space 5 to the front and rear surfaces.
Although it penetrates through 9,10, the scraps can be discharged by penetrating only one of the front and rear surfaces 9,10.

Next, a second embodiment of the support member 1 will be described with reference to FIG. In the drawings, the same reference numerals as those in the first embodiment denote the same things.

The support member 13 includes a space portion 14 and a discharge groove 15. This space portion 14 is similar to the space portion 5 of the first embodiment in that the fuel filler port 4
Is formed so that the upper surface of the space portion 14 is larger than the lower end surface 41 of the fuel filler 4 while being interposed between the lower end surface 41 and the bottom surface 8. Further, the discharge groove 15 is formed from the space portion 14 so as to penetrate the right surface 16 along the bottom surface 8 of the support member 13.

Then, after the shavings generated when the first moving body 31 is moved to the right are temporarily accumulated in the space portion 14, when the first moving body 31 is moved to the left, the shavings pass through the discharge groove 15. And is discharged to the outside of the support member 1. Therefore, the scraps are promptly discharged as the first moving body 31 moves.

In addition, the discharge groove 15 is penetrated toward the left surface 17 of the support member 13 so that the scraps are discharged to the outside of the support member 1 through the discharge groove 15 when the first moving body 31 moves to the right. Good. Further, the discharge groove 15 may be penetrated toward both the right surface 16 and the left surface 17. Further, the discharge groove may penetrate at least one of the right surface 16 and the left surface 17 and at least one of the front and rear surfaces 9, 10.

Further, a lid may be attached to the upper surface of the oil supply section 3, and an injection port may be provided in a part of the lid so that the oil supply section 3 can be replenished with lubricating oil.

Further, the filler port 4 is formed, for example, in a substantially trapezoidal cross section without interposing a space, the diameter of the upper end surface of the filler port 4 is set so that an appropriate amount of lubricating oil is supplied, and the lower end surface is made of resin. By setting the diameter such that sink marks do not occur during molding, it is possible to obtain the same effect as when the space portion is formed.

[Effect of device]

According to this invention, since the space is interposed between the lower end surface of the filler opening and the guide so that the sink mark formed around the lower end surface of the filler opening does not come into contact with the guide during resin molding. As a result, it is possible to prevent the generation of scraps of sink marks. Moreover, it is possible to prevent shavings from accumulating in the oil supply port and entering the bottom surface of the support member, and it is possible to prevent generation of noise due to friction between the shavings and the guide portion or the support member. Also, even if the bottom surface of the support member is scraped by sliding for a long period of time, it is possible to prevent the oil supply port from being blocked by this scrap, and the lubricating oil can be supplied smoothly to the guide portion and the bottom surface of the support member. Can be done.

[Brief description of drawings]

FIG. 1 is a perspective view of a first embodiment of a supporting member according to the present invention, FIG. 2 is a front view of the supporting member of FIG. 1, and FIG.
FIG. 4 is a perspective view of a supporting member according to a second embodiment of the present invention, FIG. 5 is an overall configuration diagram of an image forming apparatus, and FIG. 6 is a conventional supporting member. FIG. 7 is a perspective view of the attached optical system moving body, FIG. 7 is a front view of a conventional supporting member, and FIG. 8 is a sectional view of the conventional supporting member. 1,2,13 ... Support member, 3 ... Refueling section, 4 ... Refueling port, 5,14 ... Space section, 7 ... Guide rail.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-59-216134 (JP, A) Actually open 62-116246 (JP, U) Actually open 61-33039 (JP, U) Actually open 62- 41141 (JP, U)

Claims (1)

[Scope of utility model registration request] 1. An optical system moving device for supporting an optical system moving body slidably reciprocating on a guide by the guide, the oil supply port being formed on a bottom surface of a supporting member so as to supply lubricating oil from an oil supply section. A support member for an optical system moving body, characterized in that, in the support member for a body, a space is formed in a bottom surface portion of the support member so as to include a lower end of the fuel supply port.