JPH0562330B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a copying machine that has a main body that can be divided into an upper main body and a lower main body, and a movable body that is reciprocatably disposed on the main body.

As is well known, there are two types of copying machines: one in which the optical system consisting of a light emitter, a light converging body, etc. is fixed and the original table is moved, and the other in which the original table is fixed and the optical system is moved. Regardless of which type of copying machine you use, in order to make it easier to inspect the internal mechanism and to make it easier to repair in the event of paper jams or other malfunctions, two main bodies are installed along the path through which the transfer paper passes. In some cases, the upper body is divided into two parts, and the upper body is configured to be able to rise and fall freely.

In such a copying machine in which the entire upper part of the main body is opened upward, the movable optical system or the document table disposed within or on the upper surface of the upper main body may cause the upper main body to tilt due to its own weight. It may slip down along the road and cause various problems.

For example, in the case of a copying machine with a movable original table,
The acceleration force or impact force caused by the sliding of the platform may apply unreasonable force to the internal structure, or when the platform slides down, it may collide with external objects or people, causing damage or injury. On the other hand, even in the case of a copying machine with a moving optical system, the optical system may be damaged or the movement accuracy may be disrupted due to the acceleration force or impact force caused by the sliding, or the optical system may become misaligned. If the upper body is closed while the optical system is in this state, the optical system will be deviated far from the copy start position, and a special control mechanism must be added to correct this, leading to a complicated internal mechanism and an increase in cost.

In order to eliminate this drawback, for example, JP-A-55-
Various techniques have been proposed, such as No. 153949 and Japanese Patent Application Laid-open No. 138662/1983, but all of them have a structure that directly regulates the position of the original placing table or the optical system, which has a large weight, so after many years of use, the original placing table etc. It is easy to cause distortion or damage, and since the restriction position is limited, the upper main body must be opened after returning the original table to a predetermined position, which is cumbersome to operate. It had various drawbacks such as.

The object of the present invention is to provide a copying machine that can overcome the drawbacks of the prior art.

An object of the present invention is to control the position of a movable optical system or a document table disposed within or on the upper surface of the upper body in conjunction with releasing the fixed state between the upper body and the lower body, and to manually It is an object of the present invention to provide a copying machine in which it is impossible to accidentally release the positional restriction of the document placement table, etc. This makes it possible to prevent various accidents caused by the document placing table or the like slipping down.

Another object of the present invention is to prevent the original placing table from becoming distorted or damaged even after long-term use, by regulating the position of the original placing table, etc., not directly but indirectly.

Another object of the present invention is to provide a copying machine in which the position of the document placing table, etc. can be controlled at an arbitrary position. This eliminates the troublesome operation when opening the upper body.

Other objects of the invention will become apparent from the description of the embodiments given below with reference to the drawings.

In order to achieve this technical problem, the present invention includes a movable body that is reciprocably disposed on the side of an upper body that can be divided and opened with respect to a lower body, and a movement control means that controls the reciprocating motion of the movable body. A copying machine comprising: a cover member that closes one side of an upper body and a lower body and performs electrical cutting by dividing and opening the upper body; and a cover member that divides and opens the upper body upward while releasing the connection between the upper body and the lower body. an opening operation means; a position regulating means for locking the movement control means in conjunction with a release operation of the opening operation means to regulate the position of the movable body at a desired position; and a shaft body that moves to a position where the shaft body is moved only when the cover body is opened, and the position regulating means is moved in accordance with the release of the locking regulation of the opening operation means and the division opening of the upper body. A copying machine is proposed that is characterized by a structure that allows regulations to be tolerated.

In this case, the movable body refers to an original table or an optical system.

Further, the movement control means refers to a drive motor that controls the reciprocating motion of the moving body, and a transmission system such as a pulley, gear, etc. connected to the motor.

Further, although the opening operation means is explained using a handle in the embodiments described later, the present invention is not limited to this, and the opening operation means can be formed using other mechanical means such as levers. is also possible. Furthermore, the mounting position of the opening operation means is not limited to the upper body, but may be mounted on the lower body or the front cover.

The cover member corresponds to the inner cover 29 in the embodiment described later, but is not limited to this, and may be any cover member that closes one side of the upper main body and the lower main body and performs electrical cutting by dividing and opening the cover member.

In addition, the shaft corresponds to the support shaft 25 in the embodiment described later.

In the embodiment described later, the position regulating means is composed of a combination of a regulating member 57 and a pulley 55 having fins 55a.

Therefore, according to this technical means, since the lock restriction of the opening operation means can be released and the position restriction of the position restriction means can be permitted only at the movement position of the shaft body caused by opening of the cover body, the above-mentioned A double safety mechanism is activated by the shaft, and even if the position regulating means accidentally becomes able to regulate the position, as long as the shaft does not move, in other words, as long as electrical disconnection is not performed by opening the cover body. The optical system and original table are not regulated.

This prevents the driving system, such as a motor, which drives the optical system and the document table from being locked and causes burnout due to overcurrent, etc., and is extremely safe.

More specifically, if the shaft body is forcibly moved to its original position due to the cover body being closed, even if the locking mechanism is released for some reason, this may cause the locking mechanism to be released, for example, during copying of an original. If the upper main body is about to be split open due to accidental contact with the opening means and the position of the position regulating means is regulated, the drive of the optical system and the original table will be stopped because the current is being applied. However, in the present invention, there is a risk that the drive system such as a motor may lock up and cause burnout due to overcurrent, etc., but this does not occur in the present invention.

Furthermore, in the present invention, while the cover member is closed, the connection release means maintains a locked state, so that even if the upper body is opened by mistake, the division will not be opened. Unexpected accidents caused by sliding of moving objects can be prevented.

Then, the lock of the connection release means is released by the opening operation of the cover member, and in this state, the upper body is separated and opened by the release operation with the connection release means, and is operated in conjunction with the release operation. The movement control means is locked by the position regulating means, thereby regulating the position of the movable body at an arbitrary position, thereby preventing an accident caused by the movable body from accidentally slipping down.

FIGS. 1 to 5 show a copying machine with a movable document table according to an embodiment of the present invention.

FIG. 1 is an overall schematic diagram of the machine, and to briefly explain its configuration, the copying machine main bodies 1 and 2 are formed so as to be able to be divided into two parts approximately along the transfer paper transport path, and both parts 1,
A hinge member 4 is attached to one side and a clamp member 5 is attached to the other side so as to bridge 2, and the upper body 1 can be opened and closed freely using the hinge member 4 as a fulcrum, and both 1 and 2 are fixed by the clamp member 5. Configure as possible.

The upper main body 1 includes a drum-shaped photoreceptor 6 located approximately in the center, a destaticizing section 7, a charging section 8, an exposure section (optical system) 9, and a developing device 10 around the photoreceptor 6. At the same time, a reciprocating document mounting table 3 is attached to the upper surface.

On the other hand, a paper feed cassette mounting section 11, a paper feed mechanism 12, a transfer charge 13, a fixing device 14, and a paper discharge port 15 are sequentially attached to the lower body 2 in the order in which the transfer paper is conveyed. The fixing device 14 is covered by a rectangular cover member 14a, and its upper surface is located near the dividing surface of the main bodies 1 and 2. 1
Reference numeral 6 denotes a drive motor that moves the original table and drives various mechanisms described later.

Fig. 2 is a left side sectional view of the upper body, Fig. 3 is a sectional view of main parts from the front, Fig. 4 is a partial plan sectional view showing the operating state on the front (front) side, and Fig. 5 is the back (rear) side. It is a partial plane sectional view showing the operating state on the side.

The upper main body 1 has side plates 20, 2 disposed on the front and rear surfaces.
1 and a stay 23 for fixing the side plates 20, 21, etc., form a frame body, and the front side plate 20 has a mounting member in which a shaft hole 26 for pivotally supporting a support shaft 25, which will be described later, is formed in the upper side of the frame body. 27 is fixed, and a horizontal plate 24 is fixed to the lower side of the rear side plate 21 for fixing various members to be described later. Note that above the mounting member 27 there is another mounting member 19 similarly fixed to the front side plate 20, and the upper side of this mounting member 19 is connected to the stay 2.
3 is formed to protrude upward and to which the document mounting table 3 can be attached.

Disposed on the front surface of the front side plate 20 is an outer cover 28 that can be opened and closed using the lower end of the lower body 2 as a fulcrum, and an inner cover 29 that opens and closes following the outer cover 28. The inner cover 29 is configured so that an electric cutting mechanism (not shown) is activated when the cover 29 is opened, and the inner cover 29 is configured so that an electric cutting mechanism (not shown) is activated when the cover 29 is opened.
A cylindrical pin 30 that can be inserted into the shaft hole 26 is protrudingly provided at a position opposite to the shaft hole 26 to prevent movement of a support shaft 25 (described later) when the cover 29 is closed. Incidentally, in FIG. 2, the support shaft 25 is clearly indicated by a thick dashed dotted line in order to clarify its relationship with other mechanisms.

A stay member 31 is rotatably supported at the lower end of the upper body 1 between the side plates 20 and 21, and clamp pieces 5a are fixedly suspended from both ends of the stay member 31, and are arranged on the lower body. It is configured to be able to engage with the pin 5b that has been attached.

Further, a handle 32 and an arm member 33 are fixed to the stay member 31 as shown in FIG.

The other end of the handle 32 extends horizontally;
The upper body 1 projects outwardly, while the arm member 3
A connecting bar 35 is connected to the other end of 3 via a pin 34.
Rotating members 37 are also rotatably connected to the other ends of the connecting bars 35 via pins 36, respectively.

The rotating member 37 has a shaft 3 fixed to the front plate 20.
8, the support shaft 25 side extends in a substantially horizontal direction, and its tip 37a is bent into a rectangular shape, and is fixed to the support shaft 25, which will be described later, as shown in FIG. It is configured to be able to engage with the pin member 43.

On the other hand, a lever member 40 is disposed between the rotating member 37 and the front plate 20 and is elastically biased downward by a coil spring 39 hooked to a fixed shaft 41 fixed to the front plate 20. There is.

The lever member 40 has its lower end 40a bent so as to be able to come into pressure contact with the upper surface of the cover member 14a of the fixing device 14 disposed on the lower main body 2, and is bent at a position corresponding to the shaft 38 for fixing the rotating member 37. A vertical U-shaped groove 40b and a vertical elongated hole 40c are formed at a position corresponding to the fixed shaft 41, and the lever member 4
0 moves through the elongated hole 4 while its movement in the left and right direction is restricted.
It is configured to be movable up and down by a center-to-axis distance of 0c. Further, the lever member 40 has a side portion on the side of the support shaft 25 bent, and a U-shaped groove 40d is formed in the horizontal direction near its upper end, and can be engaged with a pin member 43 fixed to the support shaft 25, which will be described later. Configure.

The support shaft 25 has both ends 25a of a rod having a square cross section cut into a cylindrical shape, and has cylindrical pin members 43 and 44 extending symmetrically from both ends of the side surface. Then, one end of the support shaft 25 is rotatably inserted into the shaft hole 26, and as shown in FIG. Hooked coil spring 46
The other end is hooked, and the support shaft 25 is configured to be slidable and rotatable while applying an elastic force to the front plate 20 side.

The tip end of one pin member 43 is engaged with the U-shaped groove 40d of the lever member 40 so as to be movable in the axial direction of the support shaft 25 as described above, while the stay 2
The tip of the pin member 44 fixed to the other side of 3 is
Long holes 56a of the fixing plate 58 and the regulating plate 57, which will be described later,
57a is engaged with one end of the horizontal portion, and the elongated hole 56a,
It is configured to be movable along 57a.

A rotating shaft 50 is provided on both sides of the inner wall surface of the rear side plate 21.
A forward/reverse clutch 51 with protruding portions a and 50b is fixed, and one rotating shaft 50a is made to protrude outward from the rear plate 21, and encircles and fixes an input/output gear 52 connected to the drive motor 16. A wire drum 53 is fixed to the tip. wire drum 5
A wire 54 connected to the document table 3 is hung from the document plate 3, and the reciprocating movement of the document table 3 is controlled by the rotation of the drum 53. On the other hand, the other rotating shaft 50b
A pulley 55 having eight fins 55a extending radially from the front is fixed to the tip.

In front of the pulley 55 is a fixing plate 56 and the fixing plate 5.
A regulating member 57 is rotatably supported on the front surface of 6.

The fixed plate 56 is fixed between the stay 23 and the horizontal plate 24 so that the front surface thereof is orthogonal to the side plates 20 and 21 (parallel to the support shaft 25), and is placed perpendicular to the horizontal part at a position substantially facing the support shaft 25. An L-shaped long hole 56a having a portion is bored.

On the other hand, the regulating member 57 has a side end extending toward the pulley 55 side to form a regulating piece 57b, and the L
The elongated hole 5 is located at a position corresponding to the letter-shaped elongated hole 56a.
An elongated hole 57a having a substantially "〓" shape is drilled with the vertical part of 6a tilted toward the front side plate 20 side, and its horizontal part is aligned with the horizontal part of the elongated hole 56a.
The pin member 44 is engaged with the tip of the pin member 44. The regulating member 57 has a shaft 58 protruding from the front surface of the fixed plate 56.
A cutout piece 57c is rotatably supported in the direction of the arrow as a fulcrum and is formed on the front plate 20 side.
A coil spring 59, whose other end is hooked to the fixed plate 56, is hooked so as to apply an elastic force in the direction opposite to the pulley 55, that is, toward the front plate 20.

Next, the operation of this embodiment based on this configuration will be explained.

First, when the inner cover 29 is in the closed state, the lower end 40a of the lever member 40 is pressed and fixed to the upper surface of the cover member 14a of the fixing device 14, so that the pin member engaged with the U-shaped groove 40d of the lever member 40 43 and the support shaft 2 fixing the pin member 43
The rotation of the support shaft 25 is restricted, and the support shaft 25 is not supported because the cylindrical pin 30 of the inner cover 29 fitted into the shaft hole 26 of the mounting member 27 presses the support shaft tip 25a. Movement of the shaft 25 is also prevented, and the support shaft 25 is maintained at the position indicated by the solid line (the bold dashed line in FIG. 2) without rotating or moving.

On the other hand, since the tip end 37a of the rotating member 37 engages with a pin member 43 disposed on the other side of the support shaft 25, the rotation of the rotating member 37 is restricted, thereby connecting The rotating member 3 via the bar 35 etc.
7 is prevented from rotating.

Therefore, even if an attempt is made to forcibly rotate the handle 32, it cannot be moved, so the upper body 1 and the lower body 2 are locked (fixed) without the clamp piece 5a and pin 5b coming out of engagement. The state is maintained.

Next, the operation when the upper body 1 is opened upward will be explained.

Following the opening of the outer cover 28, the inner cover 29 is opened.
When it is opened, a safety device is activated by the operation of an electric disconnection mechanism (not shown), and the cylindrical pin 30 that was blocking the movement of the support shaft 25 is removed from the shaft hole 26.
Position 2 where the support shaft 25 is shown by the dashed line on the front side plate 20 side
Move to 5'.

The U-shaped groove 40 follows the movement of the support shaft 25.
The pin member 43 engaged with d also follows 43'
The pin member 44 engaged with the elongated holes 56a and 57a also moves to the position 44', whereby the engagement between the pin member 43 and the rotating member 37 is released. The handle 32 can now be rotated.

As a result, by lifting the handle 32 upward, the stay member 31 rotates, and following the rotation of the stay member 31, the clamp piece 5a rotates and disengages from the pin 5b, and the upper body 1 The lock between the lower body 2 and the lower body 2 is released.

Next, when the upper main body 1 is opened upward using the hinge member 4 as a fulcrum, the lever member 40 is released from the pressure contact state with the cover member 14a and the coil spring 39 is released.
Due to the elastic force of , it moves downward to a position 40' shown by a dashed line. As the lever member 40 moves, the pin member 43 engaged with the U-shaped groove 40d rotates, and the support shaft 25 rotates following this movement. Then, due to the rotation of the support shaft 25, the pin member 44' on the other side is
4 along the vertical part of the elongated hole 56a of the fixing member 56.
Rotate to the 4" position.

On the other hand, the elongated hole 57a of the regulating member 57 is also connected to the pin member 44.
As the pin member 44' rotates, the elongated hole 57a rotates along the vertical portion of the elongated hole 56a, and following this, the regulating member 57 absorbs the elastic force of the coil spring 59. It moves against the pulley 55 side to the position 57'.

As a result, the regulation piece 57b on the pulley 55 side of the regulation member 57 becomes
This locks the pulley 55. As a result, the rotating shaft 50a and the wire drum 53, which are connected to the pulley 55 via the forward/reverse clutch 51, are fixed, and when the upper body 1 is opened, they are also fixed to the wire drum 53 via the wire 54. The original document mounting table 3 is fixed and can be prevented from slipping down.

Incidentally, on the front surface of the pulley 55, there are 8
Since the two fins 55a are provided, the document placement table 3 can be fixed at any position without being restricted by the position.

FIG. 6 shows another embodiment in which a pulley 70 with fins 70a is arranged in parallel with the forward/reverse clutch 51.
The finned pulley 70 is connected to the rotating shaft 50a and the wire drum 53 via gears 71 and 52. This embodiment is effective when the finned pulley 70 cannot be disposed on the same axis as the forward/reverse clutch 51 due to storage space in the upper body 1. Alternatively, the fins 70a may be formed directly on the gear 71.

As described above, according to the present invention, the position of the movable optical system or document placement table disposed within or on the upper surface of the upper main body is regulated in conjunction with the release of the fixed state between the upper main body and the lower main body. At the same time, it is possible to provide a copying machine in which it is impossible to manually or accidentally release the positional restriction of the document placement table, etc.
This makes it possible to prevent various accidents caused by the document placing table or the like slipping down.

Further, according to the present invention, while the upper main body and the lower main body are in a fixed state, there is provided a copying machine in which the position of the document placing table, etc. is never regulated even by manual operation or an operation error. can be provided.

Further, according to the present invention, since the document mounting table is not fixed directly but indirectly, it is possible to provide a copying machine that provides a buffering effect and does not apply strong impact force to the document mounting table. This prevents the document mounting table from becoming distorted or damaged even after long-term use.

Still another object of the present invention is to provide a copying machine in which the position of the document placement table etc. can be controlled at any desired position. This eliminates the troublesome operation when opening the upper body.

It has various effects such as

[Brief explanation of the drawing]

FIGS. 1 to 5 show a copying machine with a movable document table according to an embodiment of the present invention. Fig. 1 is an overall schematic diagram, Fig. 2 is a left side sectional view of the upper body, Fig. 3 is a sectional view of the main part from the front, and Fig. 4 is a partial plan sectional view showing the operating state on the front side. FIG. 5 is a partial plan sectional view showing the operating state on the back side. FIG. 6 is another embodiment in which a finned pulley is disposed in parallel with the forward/reverse clutch, and is a partial plan sectional view showing the operating state on the rear side. 1... Upper main body, 2... Lower main body, 3... Moving body (original placing stand).

Claims (1)

[Scope of Claims] 1. A copying machine comprising a movable body reciprocatingly disposed on the side of an upper body that can be divided and opened with respect to a lower body, and a movement control means for controlling the reciprocating motion of the movable body, a cover member that closes one side of the upper body and the lower body and performs electrical cutting by dividing and opening the same; an opening operation means that divides and opens the upper body upward while releasing the connection between the upper body and the lower body; and the opening. a position regulating means that locks the movement control means in conjunction with a release operation of the operating means and regulates the position of the movable body at an arbitrary position; and a shaft body that moves in a predetermined direction when the cover member is divided and opened. The structure is configured such that only at a movement position of the shaft body caused by opening of the cover body, the locking regulation of the opening operation means is released and the position regulation of the position regulating means performed following the splitting and opening of the upper body is allowed. Copying machine 2. The copying machine according to claim 1, wherein the movable body is a document mounting table. 3. The copying machine according to claim 1, wherein the moving body is an optical system.