JPH01164818A - Intershaft connecting device - Google Patents

Abstract

PURPOSE:To enable transmission of a power between shafts the axes of which are displaced from each other, by a method wherein, in the subject device used for a duplicator, an oscillating means is mounted to the one mounting part of a coupling member. CONSTITUTION:A coupling member 6 is provided at the central part of the front side 61 with a conical protrusion 62, and engaging protrusions 63 and 63' are formed in an erecting manner. The coupling member 5 on the other side is provided at the central part of the front side 51 with a conical recessed part 53, engaging protrusions 54 and 54' are formed in an erecting manner on the outer peripheral surface thereof, and the coupling member is engaged with the coupling member 6 for rotation. Further, the coupling member 5 is provided at its mounting part with an oscillating means 7. The oscillating means 7 is provided with a cylinder part 56 having a bore larger than the size of a rotary shaft 1, and an oblong hole 71 formed in its outer periphery along a circumference is engaged with a pin 72 extending through the rotary shaft 1 at right angles therewith.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an inter-shaft connection device that connects opposing shafts of drive systems installed in, for example, a copying machine main body and its replacement unit.

[Background of the invention]

Generally, when making the copying machine main body and its replaceable unit, for example, an image forming unit that includes a photoreceptor drum and its peripheral equipment, replaceable, the drive system for the drum, developing sleeve, etc. mounted in the image forming unit is connected to the copy machine main body. A shaft-to-shaft connection device with a coupling is required to allow connection to the drive train.

However, such a replacement unit is suspended from a guide member such as a rail installed on the main body side and taken out from a predetermined position and inserted into that position, but the guide member on the main body side and the traveling unit side A certain play is made between the parts to improve handling during replacement. Therefore,
When the replacement unit is inserted into the specified position, the axes of the two connecting shafts do not line up perfectly, making it impossible to connect the shafts. Conventionally, a positioning means is provided at the center position, which allows for rough charging. Unless the position of Uniso 1~ is corrected, the inter-shaft connection device will not work.
Various problems have arisen, such as an increase in the number of parts at the connection site and an increase in the number of assembly steps.

[Purpose of the invention]

In view of the above-mentioned points, it is an object of the present invention to provide an inter-shaft coupling device that enables power transmission between shafts whose axes are misaligned without accurate positioning.

[Structure of the invention]

In order to achieve the above object, the present invention provides an inter-shaft connection device equipped with a pair of force/knob ring members attached to opposing rotating shaft ends and capable of connecting and disconnecting the shafts, in which at least one attachment portion of the coupling member is provided. A swinging means is provided on the shaft, and the shafts can be connected without accurate positioning.

〔Example〕

Next, the present invention will be described based on embodiments shown in the accompanying drawings.

In the figure, 1 is a rotating shaft on the copying machine main body 2 side, 3 is a rotating shaft on the image forming unit side 4, and a pair of compression members 5 and 6 are attached to each shaft end to connect the shafts. ing. As shown in the first diagram, the compression member 6 on the image forming unit 4 side has a raised conical convex portion 62 in the center of the front side 61, and retaining protrusions 63, 63 on the outer peripheral surface. ' has been established. Further, the coupling member 5 on the main body 2 side has a conical recess 53 that can fit with the conical convex part 62 on the end face of the raised cylindrical body 52 at the center of the front side 51, and has a conical recess 53 on the outer peripheral surface. Engagement protrusion 54
．． 54' is erected and engaged with the engagement protrusions 63 and 63' of the coupling member 6 on the image forming unit 4 side so that they can rotate together in the rotational direction.

At least one of the coupling members 5 and 6,
In this embodiment, a swinging means 7 is provided at the attachment portion of the coupling member 5 attached to the rotating shaft I on the main body 2 side. This swinging means 7 is provided with a cylindrical part 56 having an inner diameter larger than the rotating shaft 1 on the back side 55 of the coupling member 5, and a long hole 71 provided along the circumference on the outer periphery of the cylindrical part 56. A pin 72 passing through the end at right angles is fitted into the end. This pin 72
To fit the elongated hole 71 into the elongated hole 71, as shown in the figure, a tree-like cut 73 is provided that communicates with the elongated hole 71 from the end face of the cylindrical portion 56, and the pin 72 is inserted from there by utilizing the elasticity of the material that constitutes the cylindrical portion 56. This is done by press-fitting the pin 7.
After passing through 20, the pin 72 returns to its original state, so the pin 72 that has entered the long hole 71 will not escape again.

By installing the swinging means 7 at the attachment part of the coupling member 5, the coupling member 5 has a degree of freedom in which its front side faces vertically and laterally, and also a degree of freedom in a direction perpendicular to the axis of the rotation shaft. Be prepared. These degrees of freedom are contributed by the gap between the rotating shaft 1 and the cylindrical portion 56, the gap between the pin 72 and the elongated hole 71, and other factors.

The rotating shaft 1 on the main body 2 side is mounted on a bearing member 8 as shown in the second figure.
It is supported at two points so as to be slidable in the axial direction from No. 9, and is keyed to the drive gear 1o, so that it is rotationally driven by a drive source (not shown). Further, it is biased by a spring 11 in a direction B opposite to the direction A in which the image forming unit 4 is inserted. 12 is a spacer extending from the drive gear 10 and slidably contacting the back surface of the bearing member 8; 13;
is a gear provided on the outer periphery of the coupling member 6, and is connected to the stirring member and the photosensitive drum via a gear train (not shown). , 14 is a shaft of an I/ner replenishing roller which rotates in conjunction with the rotating shaft 3 on the image forming unit side to which the coupling member 6 is attached via gears 15 and 16.

In the above embodiment, when the image forming unit 4 is inserted into the main body 2, due to the play created between the image forming unit 4 and the guide member such as a rail installed on the main body side, the connecting shaft 1 between the two
．． Even if the axes 17 and 18 of the two do not exactly match and are slightly shifted by the dimension β as shown in the second figure, since the main body side coupling member 5 is provided with the swinging means 7 at its attachment part, Connect in the crooked state as shown in the third figure. Of course, if the drive from the wooden body side is transmitted to the image forming unit side, the image forming unit side will naturally be corrected in the direction in which the axes of the inter-shaft connecting portions coincide.

Further, when the coupling member 6 on the image forming unit side is connected to the coupling member 5 on the main body side, the compaction member 5 on the main body side can retreat against the spring 11, so that the compaction member 5, Even when the front faces of the parts 6 are not directly facing each other, the combination of the conical concave and convex portions provides good fitting performance.

〔Effect of the invention〕

As explained above, the present invention provides an inter-shaft connection device including a pair of coupling members attached to opposing rotating shaft ends and capable of connecting and disconnecting the shafts. Since it is characterized by the provision of a vibration means, it is possible to connect the shafts without accurate positioning, and also has the excellent effect of enabling power transmission between shafts whose axes are misaligned.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, in which FIG. 1 is a perspective view showing a state before connection, FIG. 2 is a sectional view thereof, and FIG. 3 is a sectional view showing a connected state. 1.3-rotating shaft 2-main body 4-imaging unit 5.6-coupling member 7-oscillating means 71-elongated hole 72-pin

Claims (3)

[Claims] (1) In an inter-shaft connection device that includes a pair of coupling members that are attached to opposite ends of rotating shafts and can connect the shafts intermittently, an oscillation means is provided in the attachment portion of at least one of the coupling members. An inter-axis connection device featuring: (2) The swinging means fits a long hole provided along the circumference on the outer periphery of a cylindrical portion protruding from the back side of the coupling member and a pin penetrating at right angles to the end of the rotating shaft. An inter-shaft connection device according to claim 1. (3) The shaft-to-shaft connection according to claim 1 or 2, wherein the pair of coupling members are provided with a conical unevenness in the center portion on the front side and a locking protrusion on the outer peripheral surface. Device.