JP6300535B2 - Sheet position adjusting apparatus and image forming apparatus - Google Patents

Description

  The present invention relates to a sheet position adjusting device that adjusts the position of a sheet stacked on a stacking unit, and an image forming apparatus having the sheet position adjusting device.

  The invention described in Patent Document 1 is disclosed as an invention relating to a feeding cassette having a regulating plate for regulating the position of a sheet in a feeding cassette such as a copying machine or a printer. The configuration described in Patent Document 1 describes a configuration in which the restriction plate is moved in the insertion / extraction direction of the feeding cassette in conjunction with the insertion / extraction operation of the feeding cassette.

JP-A-6-263268

  However, the invention described in Patent Document 1 does not describe moving the regulating plate in a direction perpendicular to the insertion / extraction direction of the feeding cassette. Therefore, the sheet cannot be positioned in the direction orthogonal to the insertion / extraction direction of the feeding cassette.

In view of the above circumstances, an object of the present invention is to provide an image forming apparatus capable of positioning a sheet in a direction orthogonal to the insertion / extraction direction of the stacking unit.

An image forming apparatus according to the present invention includes an apparatus main body including an image forming unit that forms an image on a sheet, a stacking unit that can be pulled out and inserted into the apparatus main body and stacks sheets, and an upper part of the stacking unit. A feeding direction regulating plate that regulates the position of the leading and trailing ends of the sheet stacked in the feeding direction, and an orthogonal direction regulating plate that regulates the position of the end of the sheet in the orthogonal direction perpendicular to the feeding direction. And a regulating unit that regulates the position of the sheet on the stacking unit, and the feeding direction regulating plate or the orthogonal direction regulating plate is less in conjunction with the operation of inserting the stacking unit into the apparatus main body. And driving means capable of driving one in a direction orthogonal to the insertion direction and in a direction approaching the seat, and release means for releasing transmission of the driving force of the driving means .

  According to the present invention, the driving unit drives the regulating unit that regulates the position of the sheet in a direction orthogonal to the insertion direction and a direction approaching the sheet in conjunction with the operation of inserting the stacking unit into the apparatus main body. can do. Thereby, the sheet can be positioned in a direction orthogonal to the insertion / extraction direction of the stacking means.

1 is a cross-sectional view of an image forming apparatus according to Embodiment 1. FIG. It is a perspective view of a cassette. It is a partially cutaway perspective view of a cassette, and corresponds to a view seen from the opposite side of FIG. It is a perspective view which shows the state where the cassette was stored in the inside of an apparatus main body from a bottom part. Na FIG. 6 is a perspective view of a cassette on which sheets are stacked. It is a perspective view which shows a mode that a rear-end regulation board adjusts the position of a sheet | seat. It is a perspective view which shows a mode that a width control board adjusts the position of a sheet | seat. 6 is a perspective view of a cassette according to Embodiment 2. FIG. It is a perspective view of a cassette. It is a partially expanded back view of a cassette. It is a partially expanded back view of a cassette. 6 is a perspective view of a cassette according to Embodiment 3. FIG. It is a partially expanded back view of a cassette. It is a partially expanded back view of a cassette. 6 is a perspective view of a cassette according to Embodiment 4. FIG. It is a perspective view of a cassette. It is a partially expanded back view of a cassette. FIG. 10 is a perspective view of a cassette included in an image forming apparatus according to Embodiment 5 as viewed obliquely from above. It is the perspective view which looked at the cassette from diagonally downward. It is the partially notched perspective view which looked at the cassette from diagonally upward. It is the perspective view which looked at the cassette from diagonally downward. It is the perspective view which looked at the cassette when a small size sheet is set from above. It is the perspective view which looked at the cassette when a large size sheet is set from above. It is the perspective view which looked at the cassette from diagonally downward.

  FIG. 1A is a front view of the image forming apparatus 500. However, a part of the internal configuration is shown transparent. The image forming apparatus 500 includes an apparatus main body 200. Inside the apparatus main body 200, an image forming unit G that forms an image on a sheet and a sheet position adjusting apparatus 700 (described later) according to the first embodiment are arranged. The paper is stored in the cassette 100 and is conveyed toward the image forming unit G by the feeding roller 201. The driving of the photosensitive drum and other internal devices, a motor that operates a gear train, which will be described later, is controlled by the controller 600.

  FIG. 1B is a partially cutaway perspective view of the cassette 100. FIG. 2 is a perspective view of the cassette 100. FIG. 3 is a partially cutaway perspective view of the cassette 100 and corresponds to a view seen from the opposite side of FIG. As shown in FIG. 1B, the cassette 100 includes a width regulating plates 1 and 2 that regulate the position in the width direction of the sheets stored in the cassette 100, and a rear end regulating plate that regulates the rear end of the sheet. 3.

  The rear end regulating plate 3 as a “feed direction regulating plate” regulates the positions of the leading and trailing ends of the sheets stacked on the middle plate 20 in the feeding direction M. The rear end regulating plate 3 includes a rear end regulating surface portion 3J (see FIG. 2) extending in the insertion / extraction direction L for inserting or extracting the middle plate 20 into or from the apparatus main body 200.

  The width regulating plates 1 and 2 as “orthogonal direction regulating plates” regulate the position of the end portion of the sheet in the direction perpendicular to the feeding direction M (insertion / extraction direction L). The width regulating plate 1 regulates the position of one end of the sheet P (one side of the sheet), and the width regulating plate 2 regulates the position of the other end of the sheet P (the other side opposite to the one side of the sheet). The width regulating plates 1 and 2 have width regulating surface portions 1J and 2J (see FIG. 2) along the feeding direction M orthogonal to the insertion / extraction direction L.

  A rack gear portion 1b is formed on the width restricting plate 1 (first orthogonal direction restricting plate), and a rack gear portion 2b is formed on the width restricting plate 2 (second orthogonal direction restricting plate). The pinion gear 4a meshes with the rack gear portion 1b and the rack gear portion 2b. Therefore, when the pinion gear 4a rotates, the rack gear portion 1b and the rack gear portion 2b move, and the width restricting plates 1 and 2 move simultaneously at the same distance, and the width restricting plates 1 and 2 can be pulled and separated.

  The aforementioned pinion gear 4a is formed integrally with the idler gear 4b and rotates on the same axis. The differential gear 5 has a torque limiter that idles and suppresses drive transmission when torque of a certain value or more is generated inside. A step gear 6 is engaged with the differential gear 5. A base gear 7 is engaged with the step gear 6. The base gear 7 is engaged with a swing gear 8 (see FIG. 3), and the swing gear 8 is held so as to be swingable around the base gear 7.

  The rack gear 9 is fixed to the apparatus main body 200 and meshes with the swing gear 8. The swing plate 15 (see FIG. 3) swings while holding the swing gear 8 around the base gear 7. The swing spring 16 (see FIG. 3) biases the swing gear 8 and the swing plate 15 toward the tooth surface of the rack gear 9. The idler gear 10 is engaged with the base gear 7.

 The differential gear 11 has a torque limiter that engages with the idler gear 10 and idles to suppress drive transmission when a torque exceeding a certain value is generated inside. The idler gear 12 meshes with the differential gear 11 to perform drive transmission. The idler gear 13 meshes with the idler gear 12 to transmit drive. The fan gear 14 has a pinion gear 14a that transmits the drive from the idler gear 13 around the rotation fulcrum 14c. A cover 18 (see FIG. 4) that moves the rear end regulating plate 3 by swinging the lever portion 14 b holds the drive train except the rack gear 9 fixed to the apparatus main body 200 at the bottom of the cassette 100.

  Further, as shown in FIG. 2, a middle plate 20 is provided as “stacking means” that can be pulled out and inserted into the apparatus main body 200 and stacks sheets. The rear end regulating plate 3 and the width regulating plates 1 and 2 as the “regulating means” regulate the position of the sheet on the intermediate plate 20.

  As shown in FIG. 4, the apparatus main body 200 and the cassette 100 are provided with a sheet position adjusting device 700. The sheet position adjusting device 700 is provided with a driving mechanism 300 as “driving means”. The drive mechanism 300 corresponds to the gear train described above. By this gear train, the rear end regulating plate 3 and the width regulating plates 1 and 2 can be driven in the direction approaching the sheet in conjunction with the operation of inserting the cassette 100 (including the middle plate 20) into the apparatus main body 200. It has become. Further, by the gear train, the driving mechanism 300 causes the rear end regulating plate 3 and the width regulating plates 1 and 2 to move from the sheet in conjunction with the operation of pulling out the cassette 100 (including the intermediate plate 20) from the apparatus main body 200. It can also be driven in the direction of separation.

  The drive mechanism 300 includes a rack gear 9 provided on each of the rear end regulating plate 3 and the width regulating plates 1 and 2, and a pinion gear 14 a that meshes with and interlocks with the rack gear 9. The cassette 100 (including the intermediate plate 20) is inserted into the apparatus main body 200. Then, the pinion gear 14a rotates while moving along the rack gear 9, the driving force of the pinion gear 14a is transmitted, and the rear end regulating plate 3 and the width regulating plates 1 and 2 are driven in a direction approaching the seat.

  The driving mechanism 300 branches the driving force obtained by the operation in which the intermediate plate 20 is inserted or pulled out from the apparatus main body 200, and moves the rear end regulating surface portion 3J and the width regulating surface portions 1J and 2J together. .

  FIG. 4 is a perspective view showing the state in which the cassette 100 is housed inside the apparatus main body 200 from the bottom. The above-described FIGS. 1 to 3 correspond to diagrams illustrating a state in which the cassette 100 is pulled out from the apparatus main body 200 and the user can replenish paper.

  The user pulls out the cassette 100 from the state of FIG. 4 to the state of FIG. 3 in order to replenish sheets. At this time, the swing gear 8 biased by the action of the swing spring 16 moves while meshing with the rack gear 9 fixed to the apparatus main body 200. When the oscillating gear 8 rotates, the base gear 7 rotates and the driving force branches, the large circle portion of the base gear 7 rotates the step gear 6, and the small circle portion of the base gear 7 rotates the idler gear 10. When the step gear 6 rotates, the differential gear 5 rotates and the idler gear 4b rotates.

  The pinion gear 4a integrated coaxially with the idler gear 4b rotates clockwise in FIG. If it does so, the rack gear part 1b of the width control board 1 and the rack gear part 2b of the width control board 2 which mesh with this will move in the direction which mutually spaces apart. For this purpose, the width regulating plates 1 and 2 move in the direction in which the inside of the cassette 100 is expanded to the maximum width toward the respective wall surfaces. Then, the width regulating plates 1 and 2 are brought into contact with stoppers (not shown) corresponding to the respective ones provided in the cassette 100 and stopped. After this, when the rotational force from the swing gear 8 continues to be transmitted, a torque of a certain level or more is generated in the differential gear 5, and the transmission of the drive is interrupted by the differential gear 5 idling.

  On the other hand, as shown in FIG. 3, when the base gear 7 rotates, the rotational force is branched and transmitted to the idler gear 10, the differential gear 11, the idler gear 12, and the idler gear 13, and the fan gear 14 passes through the rotation fulcrum 14c. Swings to the center. The lever portion 14b integrated with the fan gear 14 moves the rear end regulating plate 3 movably attached on the groove 100b provided in the cassette 100 to the wall surface side of the cassette 100, and moves to the end portion of the groove 100b. Stops in contact. If the rotational force from the oscillating gear 8 continues to be transmitted after this, a certain torque or more is generated in the differential gear 11, and the transmission of the drive is cut off because the differential gear 11 rotates idly.

  When the middle plate 20 is pulled out from the apparatus main body 200, the drive mechanism 300 retracts the rear end regulating surface portion 3J and the width regulating surface portions 1J, 2J to the maximum sheet size or more. Each of the width restricting plates 1 and 2 and the rear end restricting plate 3 stops at a position where the width restricting plates are expanded to the maximum state. For this reason, when the user pulls out the middle plate 20 from the apparatus main body 200, the restriction plate moves to a position wider than the maximum size sheet without the user expanding the position of the restriction plate. As a result, the user can easily replenish the sheet.

  Here, as shown in FIG. 5, the user puts a sheet P that the user wants to use into the cassette 100. When the user pushes the cassette 100 into the apparatus main body 200 from the state shown in FIG. 5, the swing gear 8 rotates in a direction opposite to the operation of pulling out the cassette 100 from the apparatus main body 200, thereby forming a series of drive trains. The reverse rotational force is transmitted. As a result, each of the width regulating plates 1 and 2 and the rear end regulating plate 3 starts moving in the direction of narrowing the inside of the cassette 100, contrary to when the cassette 100 is pulled out.

  In FIG. 3, the drive train is branched from the base gear 7 as described above. However, due to the difference in reduction ratio between the two drive trains, the drive train operates as follows for any paper size. To drive. That is, as shown in FIG. 6, the sheet P is set in advance in the feeding direction M and the sheet P is set in advance in the insertion / extraction direction L. In other words, in the present embodiment, the trailing edge regulating plate 3 first comes into contact with the end of the sheet, moves the sheet P in the cassette 100, contacts and aligns with the inner wall 100 a on the feeding port side in the cassette 100, and stops. (FIG. 6).

  The rear end regulating surface portion 3J is driven first to set the sheet position in the feeding direction M, and the width regulating surface portions 1J and 2J are driven later to set the sheet position in the insertion / extraction direction L. As a result, the regulation of the sheet in the feeding direction M is completed first, and a gap is opened between the sheet and the wall facing the sheet in the feeding direction M, the rear end regulating plate 3, and the width regulating plates 1 and 2. Thus, the phenomenon of poor feeding and deterioration of printing accuracy is suppressed.

  The same applies not only when the cassette 100 is inserted but also when it is pulled out. Therefore, when the intermediate plate 20 is pulled out from the apparatus main body 200 or when the intermediate plate 20 is inserted into the apparatus main body 200, the rear end restriction surface portion 3J is driven first, and the width restriction surface portions 1J and 2J are driven. To leave.

  The cassette 100 is further pushed into the apparatus main body 200 than the restriction state in the feeding direction M of the sheet P described above, but the end of the sheet is aligned as described above, and the trailing edge restriction plate 3 and the feeding port in the cassette 100 are arranged. It is in contact with the inner wall 100a on the side. For this reason, positioning and regulation of the sheet P in the feeding direction are completed by generating a torque exceeding a specified value in the differential gear 11 and starting idling.

  On the other hand, the width restricting plates 1 and 2 move more slowly than the rear end restricting plate 3, and the cassette 100 is further pushed into the apparatus main body 200 from the state of FIG. Eventually, the end of the sheet P comes into contact with either of the width regulating plates 1 and 2 depending on the position where the sheet P is placed, and moves while being pulled toward the center. After that, the end of the sheet P comes into contact with both the width regulating plates 1 and 2 to complete the regulation of positioning in the sheet width direction (insertion / removal direction L). Thereafter, when the cassette 100 is further pushed into the apparatus main body 200, a torque exceeding a certain level is generated in the differential gear 5 as described above, and the torque limiter 5c provided in the differential gear 5 is empty. The transmission of drive is cut off by rotating.

  With the above operation, as shown in FIG. 7, when the cassette 100 is completely mounted on the apparatus main body 200, the sheet P is aligned and positioned at a predetermined position. The sheet P positioned and regulated at a position automatically adjusted to the sheet size by the width regulating plates 1 and 2 and the trailing edge regulating plate 3 is driven by a driving force from a driving device (not shown). Are fed one by one.

  In the first embodiment, the “drive means” includes a gear including a torque limiter capable of transmitting only a predetermined shaft torque. In other words, a torque limiter is used for the purpose of slipping and interrupting drive transmission when a certain torque or more is applied to the differential gear 5 and the differential gear 11. Thus, since there is a torque limiter, the seat is fixed without applying a load of a predetermined pressure or more. As a result, the intermediate plate 20 can move the sheet to a predetermined position regardless of the size of the sheet, and can regulate the position of any size sheet with a constant load.

  Further, the configuration is not limited to the torque limiter. The “driving means” may include a gear including an oil damper that can transmit only a predetermined rotational torque. That is, the same effect is confirmed even when an oil damper or the like in which a highly viscous fluid such as oil is sealed is used instead of the torque limiter.

  In the first exemplary embodiment, the sheet feeding direction M and the insertion / extraction direction L of the cassette 100 are orthogonal to each other. However, the present invention is not limited to this. That is, the sheet feeding direction and the cassette 100 insertion / extraction direction may be configured in the same direction. In this case, it is also possible to install a rack gear in the apparatus main body in the insertion / extraction direction of the feeding cassette, and to transmit the drive to the respective regulation members on the long side and the short side of the paper via a torque limiter or the like. . By doing so, it is possible to provide an image forming apparatus having effects similar to those of the first embodiment.

  8 and 9 are perspective views of the cassette 100 according to the second embodiment. 8 and 9 correspond to views of the cassette 100 viewed from different directions. 10 and 11 are rear views of the cassette 100 according to the second embodiment. Regarding the same configuration as the first embodiment, the description of the first embodiment is used, and the description thereof will be omitted as appropriate. The feature of the second embodiment is particularly the lever member 17.

  That is, in the second embodiment, the lever member 17 is provided as “release means” for releasing transmission of the driving force of the drive mechanism 300. The driving mechanism 300 transmits a driving force when a force of a predetermined weight or more is applied on the intermediate plate 20, and the lever member 17 is a driving mechanism when a force of a predetermined weight or less is applied on the intermediate plate 20. The transmission of the driving force of 300 is released.

  The lever member 17 has a distal end portion 17a (see FIG. 8) at the distal end, a lever portion 17c (see FIG. 9) at the proximal end, and a fulcrum 17b (see FIG. 8) between the distal end portion 17a and the lever portion 17c. The leading end portion 17a serving as a “detection unit” detects the sheet stacking amount of the intermediate plate 20. The lever portion 17c as “connection release means” operates together with the operation of the tip portion 17a to release the gear connection. The lever member 17 is swingably held around the fulcrum 17b in the cassette 100, and detects the stacking amount of stacked sheets (not shown) by the leading end 17a. The tip 17a is biased upward by a spring 19 (FIG. 8) provided at the fulcrum 17b.

  The swing plate 15 shown in FIG. 10 is a plate for holding and swinging the swing gear 8. The swing plate 15 is formed with a long-hole-shaped guide groove 15a (FIGS. 10 and 11) that is movable while the lever portion 17c, which is a part of the lever member 17, is engaged. The middle plate 20 is a plate on which sheets (not shown) are stacked, and has a hole 20a (FIG. 8) through which the tip end portion 17a of the lever member 17 can protrude. The distal end portion 17 a of the lever member 17 projects from the surface of the intermediate plate 20 through the hole 20 a of the intermediate plate 20. As shown in FIG. 9, the lever portion 17 c of the lever member 17 is engaged with the guide groove 15 a of the swing plate 15.

  As described above, when the weight of the sheets stacked on the intermediate plate 20 is less than the predetermined weight, the leading end portion 17a is lifted (see FIG. 9), and the lever portion 17c is inserted into the swing plate 15 Is strong (see FIG. 10). In this case, the force of the lever portion 17c is not so much applied to the guide groove 15a. Therefore, as shown in FIG. 10, the rocking plate 15 at the bottom of the cassette 100 overcomes the biasing force of the rocking spring 16 and rotates counterclockwise around the rotation shaft 7a.

  When the swing plate 15 rotates, the swing gear 8 attached to the swing plate 15 shifts from the meshed state with the rack gear 9 to the separated state, and the drive transmission is released. For this reason, in this state, the width regulating plates 1 and 2 and the rear end regulating plate 3 are not moved by the insertion / extraction of the cassette 100 from the apparatus main body 200, and the position is maintained.

  On the other hand, when the weight of the sheets stacked on the intermediate plate 20 is equal to or greater than a predetermined weight (not shown), the lever member 17 that protrudes from the hole 20a provided in the intermediate plate 20 is better than the urging force of the spring 19. By pushing, the lever member 17 rotates around the fulcrum 17b.

  Thus, when there are many sheets on the middle plate 20, the tip end portion 17a sinks (see FIG. 9), and the force that the lever portion 17c pierces the swing plate 15 is weak (see FIG. 11). In this case, the force of the lever portion 17c is greatly applied to the guide groove 15a (this force is applied obliquely downward to the right in FIG. 11). Accordingly, as shown in FIG. 11, when the lever portion 17 c of the lever member 17 moves in the guide groove 15 a of the swing plate 15, the swing plate 15 can rotate clockwise around the rotation shaft 7 a of the base gear 7. It becomes. As a result, the oscillating gear 8 meshes with the rack gear 9 by the action of the oscillating spring 16, and drive transmission is possible. At this time, the width regulating plates 1 and 2 and the rear end regulating plate 3 are movable in conjunction with the insertion and removal of the cassette 100 from the apparatus main body 200.

  Similarly to the first embodiment, when the sheets stacked in the cassette 100 are input, the width regulating plates 1 and 2 and the rear end regulating plate 3 are moved and positioned and regulated by pushing the cassette 100 into the apparatus main body 200. . At this time, the torque limiters in the differential gear 5 and the differential gear 11 are set in advance to a torque that can move at least the maximum number of sheets stacked in the specifications of the cassette 100. On the other hand, when such a torque is applied to, for example, several sheets of paper, this force is superior to the edge of the sheet and causes buckling of the sheet.

  For this reason, the sheet stacking amount that does not cause buckling of the sheet even by the maximum torque transmitted by the torque limiter in the differential gear 5 and the differential gear 11 is set in advance. The set pressure of the spring 19 is set to a value at which the swing gear 8 meshes with the rack gear 9 only when a sheet having a load larger than the above-described loading amount is loaded.

  For this reason, in the case of a paper stacking amount in which buckling occurs, the width regulating plates 1 and 2 and the rear end regulating plate 3 do not move due to insertion / extraction of the cassette 100 from the apparatus main body 200. On the other hand, in the normal loading amount where no buckling occurs, the width regulating plates 1 and 2 and the rear end regulating plate 3 move by inserting / removing the cassette 100 from the apparatus main body 200 as in the configuration described in the first embodiment. To do. In addition, it is possible to control the position by moving the sheet to a specified position regardless of the sheet size.

  FIG. 12 is a perspective view of the cassette 100 according to the third embodiment. 13 and 14 are partially enlarged back views of the cassette 100 according to the third embodiment. Regarding the same configuration as the above-described first and second embodiments, the description of the first and second embodiments is used, and the description thereof is omitted as appropriate. The feature of the third embodiment resides in the switching lever 21 that can release the gear connection when it is not desired to automatically move the restricting plate.

  That is, the third embodiment includes the switching lever 21 as “release means” for releasing transmission of the driving force of the drive mechanism 300. The switching lever 21 is a member that is operated by the user to release the connection of the drive transmission.

  The switching lever 21 is installed in the cassette 100 so that the user can selectively move between two positions of the cassette 100. The hook portion 21b of the switching lever 21 and the connecting portion 15b provided on the swing plate 15 are engaged. The switching lever 21 is provided with a latch portion 21c, and can be selectively moved between the groove 100b and the groove 100c provided in the cassette 100.

  Similarly to the first embodiment, when the sheets stacked in the cassette 100 are input, the width regulating plates 1 and 2 and the rear end regulating plate 3 are moved and positioned and regulated by pushing the cassette 100 into the apparatus main body 200. . At this time, the torque limiters in the differential gear 5 and the differential gear 11 are set in advance to a torque that can move at least the maximum number of sheets stacked in the specifications of the cassette 100. On the other hand, when such a torque is applied to, for example, several sheets of paper, this force is superior to the edge of the sheet and causes buckling of the sheet.

  For this reason, when feeding a sheet of a stacking amount that causes buckling of the sheet due to the maximum torque transmitted by the torque limiter in the differential gear 5 and the differential gear 11, the following is performed. That is, the user slides the switching lever 21 set in the cassette 100 in the direction of arrow B in FIG. 14 to drop the latch portion 21c into the groove 100b provided in the cassette 100 and fix it.

  As a result, the swing plate 15 rotates around the rotation shaft 7a of the base gear 7 and is fixed in a state where the swing gear 8 and the rack gear 9 are separated as shown in FIG. For this reason, the drive transmission between the apparatus main body 200 and the cassette 100 is cut off, and the width regulating plates 1 and 2 and the rear end regulating plate 3 are not moved by insertion / extraction of the cassette 100 from the apparatus main body 200. No buckling occurs.

  On the other hand, when a normal loading amount is loaded into the cassette 100, the user moves the switching lever 21 in the direction of arrow A shown in FIGS. As shown in FIG. 13, the latch portion 21 c is dropped into a groove 100 c provided in the cassette 100 and fixed. The connection between the hook portion 21b of the switching lever 21 and the connecting portion 15b provided on the swing plate 15 is released, and the swinging gear 8 and the rack gear 9 are engaged with each other by the action of the swinging spring 16 to transmit the drive.

  From this, the user can selectively set the operation of the automatic paper setting mechanism linked to the insertion / extraction of the cassette 100 and the manual paper replenishing method similar to the conventional one depending on the type and loading amount of the paper to be used.

  15 and 16 are perspective views of the cassette 100 according to the fourth embodiment. FIG. 17 is a partially enlarged back view of the cassette 100 according to the fourth embodiment. Regarding the same configuration as the above-described first and second embodiments, the description of the first and second embodiments is used, and the description thereof is omitted as appropriate. A characteristic of the fourth embodiment is that a retraction device 26 is provided as “retraction means” that assists the insertion operation of inserting the intermediate plate 20 into the apparatus main body 200 and draws the intermediate plate 20 into the apparatus main body 200. The pulling device 26 drives the rear end regulating plate 3 and the width regulating plates 1 and 2 in a direction approaching the sheet P in conjunction with the operation of drawing the middle plate 20 into the apparatus main body 200.

  The cassette 100 includes a drawing device 26 that draws the cassette 100 to a normal position for image formation with respect to the apparatus main body 200. The retracting device 26 is provided with an arm 24 that holds the cassette 100 and draws the cassette 100 while rotating around the rotation fulcrum 24a.

  The retracting device 26 includes a pin holding arm 22, an arm 24, and a toggle spring 25. The pin holding arm 22 is attached to the cassette 100 on the base end side, and holds the locking pin 23 on the front end side. An arm 24 is rotatably attached to the distal end side of the pin holding arm 22. The locking pin 23 of the pin holding arm 22 is locked in a locking groove 27 formed in the arm 24. The arm 24 is formed in a U shape in a side view, and a rotation fulcrum 24 a (boss) is rotatably fixed to a base of the retracting device 26. Between the U-shapes of the arms 24, a toggle spring 25 having one end fixed on the locking pin 23 side and the other end fixed on the arm fastener 28 side is disposed. The toggle spring 25 holds a force in the contracting direction.

  The pulling force in the contracting direction of the toggle spring 25 becomes a force for pulling the cassette 100 into the apparatus main body 200 in the state of FIG. 15 when the cassette 100 is inserted into the apparatus main body 200. Then, once the direction in which the toggle spring 25 extends becomes a direction along the feeding direction M, the force in which the toggle spring 25 extends once relaxes. However, when the cassette 100 is further inserted into the apparatus main body 200, the state shown in FIG. 16 is obtained. At this time, the retracting force of the toggle spring 25 in the contracting direction becomes a force for pulling the cassette 100 into the apparatus main body 200.

  As in the first to third embodiments, the user pulls out the cassette 100 from the apparatus main body 200, inserts a sheet to be passed through the cassette 100, and inserts the cassette 100 into the apparatus main body 200. At this time, the driving force is transmitted by the meshing of the rack gear 9 and the rocking gear 8, and the driving force transmitted to the width regulating plates 1 and 2 and the rear end regulating plate 3 Move to the position of, and regulate while aligning.

  By further pushing the cassette 100 into the apparatus main body 200 from this position, the replenishment of the sheet P is completed. However, after the sheet P is moved and set to the normal position inside the cassette 100, transmission of the driving force is interrupted by idle rotation of the oil dampers of the differential gear 5 and the differential gear 11. In order to further push the cassette 100 into the apparatus main body 200 from this state, it is necessary to apply a torque greater than the set value to the oil dampers in the differential gear 5 and the differential gear 11 in FIG. Therefore, for the user, the pushing load of the cassette 100 increases from the position of FIG.

  However, on the other hand, as shown in FIG. 15, the locking pin 23 of the cassette 100 meshes with the locking groove 27 of the retracting device 26 of the apparatus main body 200, and the arm 24 moves the rotation fulcrum 24 a by the action of the toggle spring 25. Rotate to center. As the arm 24 rotates, the cassette 100 is drawn into the apparatus main body 200. For this reason, the elastic force of the toggle spring 25 applies a force in a direction that cancels the increase in the load against the increase in the pushing load described above.

  At the same time, the oil dampers inside the differential gear 5 and the differential gear 11 installed in the drive train provide an effect of gradually pulling in while reducing the momentum that the toggle spring 25 pulls in.

For this reason, when the cassette 100 is pushed into the apparatus main body 200, it is possible to have a configuration in which the cassette 100 is moved gently and gently to the normal position while suppressing fluctuations in the pushing force.

  According to the configuration of the fourth embodiment, the rear end restricting plate 3 and the width restricting plates 1 and 2 are moved closer to the sheet by using the driving force when the retracting device 26 retracts the middle plate 20 into the apparatus main body 200. Can be driven. Further, the cassette 100 is provided side by side with a drawing device that draws the cassette 100 into the device main body 200. As a result, it is possible to stabilize the operation force at the time of pushing in, to securely mount the cassette 100 to a predetermined position, and to enable a gentle pull-in operation together with more accurate accuracy, safely and safely. A high-quality mounting operation is possible.

  FIG. 18 is a perspective view of the cassette 100 included in the image forming apparatus according to the fifth embodiment when viewed obliquely from above. FIG. 19 is a perspective view of the cassette 100 as viewed obliquely from below. FIG. 20 is a partially cutaway perspective view of the cassette 100 as viewed obliquely from above. Regarding the same configuration as the above-described first to fourth embodiments, the description of the first to fourth embodiments is used, and the description thereof will be omitted as appropriate.

  The fifth embodiment is characterized in that “position setting means” for setting the position of the rear end regulating plate 3 before the cassette 100 is inserted into the apparatus main body 200 is provided. According to the fifth embodiment, the position setting unit can set a stop position at which the rear end regulating plate 3 that moves in conjunction with the insertion / extraction operation of the cassette 100 stops. Another feature is that “range setting means” for setting the movement range of the rear end regulating plate 3 and the width regulating plates 1 and 2 in accordance with the operation of inserting the cassette 100 into the apparatus main body 200 is provided. According to the fifth embodiment, the range setting means can set the movement range of the rear end regulating plate 3 and the width regulating plates 1 and 2 that move in conjunction with the insertion / extraction operation of the cassette 100.

  Here, a description of the gear train will be supplemented with reference to FIG. The differential gear 5 has a torque limiter 5c that idles and suppresses drive transmission when torque of a certain value or more is generated inside. Unlike the other embodiments, the fixed gear 80 is rotatably fixed on an axis provided in the cassette 100 and meshes with the base gear 7. The rack gear 9 is fixed to the apparatus main body 200 and meshes with the fixed gear 80.

  The differential gear 11 has a torque limiter 11c that engages with the idler gear 10 and idles to suppress drive transmission when torque of a certain value or more is generated inside. The fan gear 14 has a pinion gear 14 a that meshes with the idler gear 13, rotates around the rotation fulcrum 14 c by driving from the idler gear 13, and moves the rear end regulating plate 3 by swinging the lever portion 14 b.

  The sheet position adjusting device 700 sets a movement lock 51 (FIG. 20) as “position setting means” for setting the position of the trailing edge regulating plate 3 corresponding to the size of the sheet P before the cassette 100 is inserted into the apparatus main body 200. A size setting plate 30 (see FIG. 19), a bottom plate 100k (see FIG. 18), and a size setting groove 100e (see FIG. 18).

  A size setting plate 30 as a “connecting member” shown in FIG. 19 is a plate that connects the width regulating plate 2 and the rear end regulating plate 3. In FIG. 19, the size setting plate 30 connects the shaft 2 a of the width regulating plate 2 and the shaft 3 a of the rear end regulating plate 3.

  The movement lock 51 shown in FIG. 20 has a lock knob 31, a lock spring 32, and a lock fulcrum 30c. The lock knob 31 as an “engagement portion” is provided on the size setting plate 30, and the position of the rear end regulating plate 3 is moved to the sheet P feeding position by moving the position of the size setting plate 30 in the sheet feeding direction M. Move in the feeding direction M. The lock knob 31 shown in FIG. 18 fixes the position of the size setting plate 30 with respect to the cassette 100. 20 urges the lock knob 31 toward the size setting groove 100e provided in the cassette 100. The lock spring 32 shown in FIG. The lock knob 31 is configured to be rotatable about a lock fulcrum 30c.

  As shown in FIG. 19, the bottom plate 100k forms the bottom surface of the cassette 100, to which the above-described size setting plate 30 and a plurality of gears are attached. As shown in FIG. 18, the intermediate plate 20 is a plate on which the sheets P are stacked, and is configured to be swingable around the fulcrum 20 k on the bottom plate 100 k of the cassette 100.

  As shown in FIG. 18, the size setting groove 100 e as the “engaged portion” is provided in the cassette 100 and is configured to be engaged with the lock knob 31.

  Further, in the sheet position adjusting device 700, the driving mechanism 300 (see FIG. 19) as “driving means” determines the positions of the rear end regulating plate 3 and the width regulating plate 2 according to the operation of inserting the cassette 100 into the apparatus main body 200. A notch portion 30a and a notch portion 30b are provided as “range setting means” for setting a moving range when moving in a direction approaching P. Here, the notch 30 a sets the movement range of the width restricting plate 2, and the notch 30 b sets the moving range of the rear end restricting plate 3.

  The notch 20J as the “first hole” receives the shaft 2a as the “first protrusion” formed in the width restricting plate 2, is formed in the bottom plate 100k, and extends in the insertion / extraction direction L. In FIG. 19, the notch 10 </ b> J is visible from the notch 30 a of the size setting plate 30. The shaft 2a is movable from one end of the notch 30a to the other end.

  The notch 30a as the “second hole” is formed in the size setting plate 30 that receives the shaft 2a and connects the width regulating plate 2 and the rear end regulating plate 3, and the width in the insertion / extraction direction L is the feeding direction. M is formed differently. Since the width in the insertion / extraction direction L of the notch 30a for the width regulating plate is different in the feeding direction M, the movement range of the shaft 2a protruding from the notch 20J varies as the notch 30a moves in the feeding direction M. Come. As a result, the movable range of the width restricting plate 2 is restricted.

  The notch 30b as the “third hole” receives the shaft 3a as the “second protrusion” formed on the rear end regulating plate 3, and is formed in the size setting plate 30 and extends in the feeding direction M. The notch 30b for the rear end restricting plate restricts the movable range of the rear end restricting plate 3.

  The user rotates the lock knob 31 around the lock fulcrum 30c while compressing the lock spring 32 shown in FIG. Thereby, the lock knob 31 is separated from the size setting groove 100e (see FIG. 18) provided in the cassette 100 and can move in a direction parallel to the feeding direction M. When the lock knob 31 is moved, the size setting plate 30 is moved to a predetermined position in accordance with the size of the sheet P to be replenished. When the user releases the lock knob 31, the lock knob 31 returns to its original posture and the size setting groove 100e. To be fixed on the cassette 100.

  At this time, as shown in FIG. 19, as the size setting plate 30 moves, a force is applied to the shaft 3a at the bottom of the rear end regulating plate 3 that fits in the notch 30b for the rear end regulating plate provided on the size setting plate 30. Is transmitted. For this reason, the rear end regulating plate 3 also moves simultaneously on the groove 100b provided on the cassette 100 by this action.

  The shaft 3a also acts on a lever portion 14b integrated with the fan gear 14, and the fan gear 14 rotates around the rotation fulcrum 14c. This driving force is transmitted from the idler gear 13 to the idler gear 12 and transmitted to the differential gear 11. The idler gear 10, the base gear 7, and the fixed gear 80 that are connected to the driving force are connected to the rack gear 9 that is fixed to the apparatus main body 200. doing. Therefore, the driving force is cut off by the action of the torque limiter 11 c provided inside the differential gear 11.

  At this time, as shown in FIG. 18, the sheet P is inserted between the width restricting plate 1 and the width restricting plate 2 and the rear end restricting plate 3 which are wider than the size of the sheet P. When the operation of pushing the cassette 100 into the apparatus main body 200 is performed in this state, as shown in FIG. 19, the fixed gear 80 connected to the rack gear 9 fixed to the apparatus main body 200 rotates on the tooth surface of the rack gear 9. To move. The rotation of the fixed gear 80 is transmitted to the base gear 7 and further branched to the step gear 6 and the idler gear 10. The rotation of the step gear 6 is transmitted to the differential gear 5 and is transmitted to the idler gear 4b.

  In FIG. 20, the pinion gear 4a, which is coaxially integrated with the idler gear 4b, rotates counterclockwise, so that the driving force is transmitted to the rack gear portions 1b, 2b provided on the width regulating plate 1 and the width regulating plate 2. The width restricting plate 1 and the width restricting plate 2 move in a direction approaching each other. In FIG. 19, the shaft 2 a provided at the bottom of the width restricting plate 2 is formed on the back surface of the cassette 100 from the bottom plate 100 k and the notch 30 a for width restricting plate provided on the size setting plate 30 of the intermediate plate 20. It protrudes outward.

  As shown in FIG. 19, the size setting plate 30 moves in a direction parallel to the feeding direction M while the shaft 2a of the width regulating plate 2 is inserted into the notch 30a for the width regulating plate and the notch 20J. At the same time, the rear end regulating plate 3 moves in a direction parallel to the feeding direction M while the shaft 3a of the rear end regulating plate 3 is inserted into the notch 30b for the rear end regulating plate.

  FIG. 22 is a perspective view of the cassette 100 as viewed from above when a small size sheet P is set. When the size of the sheet P is small, the user moves the lock knob 31 in the first direction M1 in the feeding direction M, moves the size setting plate 30 in the first direction M1, and moves the rear end regulating plate 3 to the first position M1. It can be moved in one direction M1.

  Along with this operation, the shaft 3a in FIG. 19 of the rear end regulating plate 3 in FIG. 18 moves in the first direction M1, and rotates from the fan gear 14 to the differential gear 11 in the direction of the arrow. Then, the power transmission ahead is interrupted by the clutch 11c.

  FIG. 23 is a perspective view of the cassette 100 as viewed from above when a large size sheet P is set. When the size of the sheet P is large, the user moves the lock knob 31 in the second direction M2 of the feeding direction M, moves the size setting plate 30 in the second direction M2, and moves the rear end regulating plate 3 to the first direction. It can be moved in two directions M2.

  Along with this operation, the shaft 3a in FIG. 19 of the rear end regulating plate 3 in FIG. 18 moves in the second direction M2, and rotates from the fan gear 14 to the differential gear 11 in the arrow direction. Then, the power transmission ahead is interrupted by the clutch 11c.

  For example, in FIG. 20, when the lock knob 31 moves in the first direction M1 in the feeding direction M, the size setting plate 30 moves in the first direction M1, and the inclined portion of the notch 30a becomes the width regulating plate. It is possible that the width regulating plate 2 abuts on the second shaft 2a and moves in the lower right direction in the figure.

  The user inserts the cassette 100 into the apparatus main body 200 from the state shown in FIG. Then, as shown in FIG. 19, the rack gear 9 enters the direction of the arrow with respect to the fixed gear 80, so that the pinion gear 4a rotates in the direction of the arrow as shown in FIG. The plates 1 and 2 move in a direction approaching each other. At the same time, as shown in FIG. 20, the fan gear 14 rotates in the direction of the arrow, and the rear end regulating plate 3 moves in the first direction M1.

  Due to the pushing operation of the cassette 100 from the state of FIG. 19 to the apparatus main body 200 in the state of FIG. 21, the fixed gear 80 moves on the tooth surface of the rack gear 9 while rotating. The rotation of the fixed gear 80 is transmitted to the base gear 7 and further transmitted to the step gear 6, the differential gear 5, and the idler gear 4b. However, a differential torque is generated in the differential gear 5 and the differential gear 5 is empty. When rotating, transmission to the idler gear 4b is interrupted.

  At the same time, the rotation of the fixed gear 80 is transmitted to the base gear 7 and then to the idler gear 10, is transmitted to the differential gear 11, the idler gear 12, and the idler gear 13, and is transmitted to the fan gear 14. The fan gear 14 rotates around the rotation fulcrum 14c, and the lever portion 14b integrated with the fan gear 14 is attached to the rear end regulating plate 3 movably mounted on the groove 100b provided in the cassette 100 in the first direction. Move to M1. As described above, the shaft 3a of the rear end restricting plate 3 includes the hole 14b1 of the lever portion 14b integrated with the fan gear 14 and the notch 30b for the rear end restricting plate of the size setting plate 30. It protrudes with both inserted.

  For this reason, as shown in FIG. 21, the shaft 3a provided on the rear end restricting plate 3 moves the notch 30b for the rear end restricting plate provided on the size setting plate 30 in the first direction M1. It abuts on the end of 30b and stops.

  After this, the idler gear 10 is rotated by the pushing operation of the cassette 100 into the apparatus main body 200, but the rear end regulating plate 3 is fixed. Therefore, the idler gear 10 is emptied by the action of the torque limiter 11c provided in the differential gear 11. The transmission of drive is cut off by rotating.

  As a result of this series of operations, as shown in FIG. 22, the width regulating plate 1, the width regulating plate 2 and the rear end regulating plate 3 are aligned while moving the sheet P and stopped at a predetermined position. Is ready for feeding.

  The above operation is the same for other sheet P sizes. As shown in FIG. 23 and FIG. 24, by moving the size setting plate 30 according to the size of the sheet P, it is possible to set the fixed position and the moving range of the rear end regulating plate 3. At the same time, the fixed position and the movement range of the width restricting plate 1 and the width restricting plate 2 can be set by the shape of the notch 30a for the width restricting plate at that position.

  Here, the “position setting means” is configured to set the position of the rear end regulating plate 3, but is not limited to this configuration, and may be configured to set the position of the width regulating plates 1 and 2. Moreover, it is good also as a structure which sets the position of both the rear-end control board 3 and the width control boards 1 and 2. FIG.

  In the configurations of the first to fifth embodiments, when the user stacks sheets on the middle plate 20 and sets the sheets in the apparatus main body 200, the user does not set the positions of the rear end regulating plate 3 and the width regulating plates 1 and 2 in advance. Further, the rear end regulating plate 3 and the width regulating plates 1 and 2 can position the sheet corresponding to different types of sheets.

  Further, conventionally, when a user sets a sheet on the middle plate 20, after the middle plate 20 is pulled out from the apparatus main body 200, “check the sheet size / restricting the rear end of the feeding direction M according to the sheet size”. A series of operations such as “positioning the plate 3 / positioning the width regulating plates 1 and 2 in the insertion / removal direction L according to the sheet size / inserting the sheet between the rear end regulating plate 3 and the width regulating plates 1 and 2” are performed. It was necessary. According to the present invention, such a process is only “stack a sheet on the middle plate 20 and insert it into the apparatus main body 200”, which significantly reduces man-hours and improves operability for the user. Further, a setting error of the trailing edge regulating plate 3 and the width regulating plates 1 and 2 by the user, a setting mistake of the sheet itself, and the like are suppressed, and defects such as a feeding failure and a variation in printing accuracy are suppressed.

  In the configurations of the first to fifth embodiments, the rear end regulating plate 3 (feeding direction regulating plate) is driven in a direction orthogonal to the insertion / extraction direction L (insertion direction) of the cassette 100 and a direction approaching the sheet P. Although it was a structure, it does not need to be limited to the said structure. For example, a configuration in which the direction in which the rear end regulating plate 3 moves is set as the insertion / extraction direction L and the direction in which the width regulating plates 1 and 2 move is set as the feeding direction M is also assumed. In this case, a configuration is assumed in which the width regulating plates 1 and 2 (orthogonal direction regulating plates) are driven in a direction perpendicular to the insertion / extraction direction L (insertion direction) of the cassette 100 and a direction approaching the sheet P. It may be a simple configuration.

1, 2 Width regulating plate (regulating means)
3 Rear end regulating plate (regulating means)
20 Middle plate (loading means)
300 Drive mechanism (drive means)
500 Main body 700 Sheet position adjusting device

Claims (14)

An apparatus body including an image forming unit that forms an image on a sheet;
And stacking means for stacking drawers and inserts can sheet relative to the apparatus main body,
The feeding direction regulating plate for regulating the positions of the leading and trailing ends of the sheets stacked on the stacking unit, and the position of the end of the sheet in the orthogonal direction perpendicular to the feeding direction are regulated. A restricting means having an orthogonal direction restricting plate and restricting the position of the sheet on the stacking means;
In conjunction with the operation of inserting the stacking means into the apparatus main body, at least one of the feeding direction regulating plate or the orthogonal direction regulating plate can be driven in a direction perpendicular to the insertion direction and a direction approaching the sheet. Driving means,
Release means for releasing transmission of the driving force of the drive means;
An image forming apparatus comprising: The orthogonal direction regulating plate is
A first orthogonal direction regulating plate for regulating one end of the sheet;
A second orthogonal direction regulating plate for regulating the other end of the opposite side of the sheet;
Have
The driving means includes
In conjunction with the operation of loading the loading means into the apparatus body,
The image forming apparatus according to claim 1, wherein the first orthogonal direction restricting plate and the second orthogonal direction restricting plate are moved toward each other. The driving means can drive the feeding direction restricting plate and the orthogonal direction restricting plate in a direction approaching the sheet in conjunction with the operation of inserting the stacking means into the apparatus main body. The image forming apparatus according to claim 1, wherein the image forming apparatus is an image forming apparatus . The driving means is capable of driving the feeding direction restricting plate and the orthogonal direction restricting plate in a direction away from the sheet in conjunction with an operation in which the stacking means is pulled out from the apparatus main body. The image forming apparatus according to any one of claims 1 to 3. The drive means, when the stacking means is inserted into the apparatus main body, drives the feeding direction restricting plate first and drives the orthogonal direction restricting plate later. The image forming apparatus according to any one of 1 to 4. Before SL driving means transmits a driving force when a predetermined weight or force on said stacking means acts,
The said cancellation | release means cancels | releases the transmission of the driving force of the said drive means, when the force of less than predetermined weight acts on the said loading means, The one of the Claims 1 thru | or 5 characterized by the above-mentioned. Image forming apparatus . It said drive means when said stacking means is pulled out from the apparatus main body, according to claim 1 to 6, characterized in that retracting the feeding direction restricting plate and the perpendicular direction regulating plate above the maximum sheet size The image forming apparatus according to claim 1 . Before SL releasing means, which can be operated by a user, the image forming apparatus according to any one of claims 1 to 5, characterized in that a switching lever for releasing the coupling of the drive transmission. Having a pull-in means for assisting an insertion operation of inserting the stacking means into the apparatus main body and pulling the stacking means into the apparatus main body;
It said drive means, in conjunction with the operation of the pull means draws said stacking means to said apparatus main body, any one of claims 1 to 8, characterized in that to drive the direction toward the regulating means on the sheet 2. The image forming apparatus according to item 1. The feeding direction regulating plate when at least one of the feeding direction regulating plate or the orthogonal direction regulating plate moves in a direction approaching the sheet in conjunction with the operation of inserting the stacking unit into the apparatus main body. or the image forming apparatus according to any one of claims 1 to 9 one said orthogonal direction restricting plate least is characterized by comprising a position setting means for setting a stopping position for stopping. Range setting for setting a moving range when at least one of the feeding direction regulating plate or the orthogonal direction regulating plate moves in the direction approaching the sheet in conjunction with the operation of inserting the stacking unit into the apparatus main body. the image forming apparatus according to any one of claims 1 to 10, characterized in that it comprises means. The range setting means includes
A first hole formed in the stacking means and extending in the orthogonal direction;
It is formed on a connecting member that receives the first protrusion and connects the orthogonal direction restricting plate and the feeding direction restricting plate, and is formed so that the width in the orthogonal direction differs in the feeding direction. Two holes,
A third hole formed on the connecting member and extending in the feed direction, the second projection formed on the feed direction regulating plate;
The image forming apparatus according to claim 11 , further comprising: Stacking means for stacking sheets that can be pulled out and inserted into the apparatus body; and
The feeding direction regulating plate for regulating the positions of the leading and trailing ends of the sheets stacked on the stacking unit, and the position of the end of the sheet in the orthogonal direction perpendicular to the feeding direction are regulated. A restricting means having an orthogonal direction restricting plate and restricting the position of the sheet on the stacking means;
In conjunction with the operation of inserting the stacking means into the apparatus main body, at least one of the feeding direction regulating plate or the orthogonal direction regulating plate can be driven in a direction perpendicular to the insertion direction and a direction approaching the sheet. Driving means,
A release means for releasing transmission of the driving force of the drive means,
The driving means transmits a driving force when a force of a predetermined weight or more acts on the loading means,
The release means releases the transmission of the driving force of the driving means when a force less than a predetermined weight acts on the stacking means. Stacking means for stacking sheets that can be pulled out and inserted into the apparatus body; and
The feeding direction regulating plate for regulating the positions of the leading and trailing ends of the sheets stacked on the stacking unit, and the position of the end of the sheet in the orthogonal direction perpendicular to the feeding direction are regulated. A restricting means having an orthogonal direction restricting plate and restricting the position of the sheet on the stacking means;
In conjunction with the operation of inserting the stacking means into the apparatus main body, at least one of the feeding direction regulating plate or the orthogonal direction regulating plate can be driven in a direction perpendicular to the insertion direction and a direction approaching the sheet. Driving means,
The seat position adjusting device according to claim 1, wherein the driving means includes a gear including a torque limiter or an oil damper capable of transmitting only a predetermined axial torque.

Images