CN109795901A - Paper bearing device, carton, automatic document feeder and image forming apparatus - Google Patents
Paper bearing device, carton, automatic document feeder and image forming apparatus Download PDFInfo
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- CN109795901A CN109795901A CN201711146527.5A CN201711146527A CN109795901A CN 109795901 A CN109795901 A CN 109795901A CN 201711146527 A CN201711146527 A CN 201711146527A CN 109795901 A CN109795901 A CN 109795901A
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Abstract
The present invention relates to paper bearing device, carton, automatic document feeder and the image forming apparatuses of the paper for being carried through paper feed roller (7) supply, wherein, the paper bearing device includes lifting plate (4), bearing paper (5)；Elastomeric element (3), bearing lifting plate (4)；And supporting part (2), it supports elastomeric element (3), it suppose there is central plane (9), the central plane (9) is the face for passing through paper width direction center line along the vertical direction, when passing through the paper feed roller (7) paper supply, lifting plate (4) is identical in the stress relative to the symmetrical two sides of the central plane (9) of paper width direction.Thereby, it is possible to prevent the case where causing the both ends of paper feed roller (7) different to the conveying capacity of paper (5) because of spring force difference and then paper is caused to tilt.
Description
Technical field
The present invention relates to paper bearing device, carton, automatic document feeder and image forming apparatus, more particularly, to
Can prevent causes the both ends of paper feed roller different to the conveying capacity of paper and then paper is caused to tilt because of spring force difference
The case where paper bearing device, carton, automatic document feeder and image forming apparatus.
Background technique
In existing paper bearing device, lifting is supported usually using left side elastomeric element and right side elastomeric element
Plate.However, sometimes because of the tolerance of the drift of volume production elastomeric element, the tolerance of coefficient of elasticity, decision elastomeric element decrement
Part tolerance and build-up tolerance and cause left side elastomeric element and spring force provided by the elastomeric element of right side different, spring
Power difference causes to be lifted plate inclination, and lifting plate inclination causes the both ends of paper feed roller different to the conveying capacity of paper, and conveying capacity is different
Lead to sent out paper run-off the straight.It is transported to slant correction roller by the paper of paper feed roller rear-inclined, at this time if inclined
If the frictional force of oblique correct roller is sufficiently large, then it will not tilt again, but if the frictional force of Slant Rectify roller is inadequate, even if into
Slant Rectify is gone, paper can still tilt.In addition, if increasing the frictional force of Slant Rectify roller, will lead to part at
This rising, thus not preferably.
Patent document 1: Japanese Unexamined Patent Publication 11-139579
Summary of the invention
The present invention be it is completed to solve the above problems, its purpose is to provide can prevent because of spring force not
Paper bearing device, the paper for the case where causing the both ends of paper feed roller different to the conveying capacity of paper together and then paper is caused to tilt
Box, automatic document feeder and image forming apparatus.
Paper bearing device of the invention is the paper bearing device for being carried through the paper of paper feed roller supply, tool
Have: lifting plate, bearing paper；Elastomeric element supports above-mentioned lifting plate；And supporting part, above-mentioned elastomeric element is supported,
It suppose there is central plane, which is the face for passing through paper width direction center line along the vertical direction, is passing through above-mentioned confession
When paper bowl paper supply, above-mentioned lifting plate is identical in the stress relative to the symmetrical two sides of above-mentioned central plane of paper width direction.
According to this structure, when passing through paper feed roller paper supply, plate is lifted in paper width direction relative to central plane pair
The stress of the two sides of title is identical.Thereby, it is possible to prevent to cause the both ends of paper feed roller to the defeated of paper because of spring force difference
The case where sending power different and then paper caused to tilt.Stated differently, since spring force provided by elastomeric element is equal, so by
The paper of conveying will not run-off the straight, paper be inclined by correct roller clamping when paper still by conveying capacity provided by elastomeric element
Device in, paper with not inclined state be inclined by correct roller clamp, also can be not incline after it have passed through Slant Rectify roller
Oblique state continues to transport, it is thus possible to reduce the paper tilt quantity after the correction of Slant Rectify roller.
In paper bearing device of the invention, can also be formed as above-mentioned supporting part is support plate, above-mentioned support plate
Rotating fulcrum is located in central plane, and above-mentioned support plate can be rotated centered on above-mentioned rotating fulcrum.
According to this structure, due to the presence of rotating fulcrum, so when left side elastomeric element and right side elastomeric element are provided
Spring force difference when, the rotatable support plate below elastomeric element rotates, until left side elastomeric element and right side bullet
Spring force provided by property component is equal.Thereby, it is possible to prevent to cause the both ends of paper feed roller to paper because of spring force difference
The case where conveying capacity difference opened causes paper to tilt in turn.Stated differently, since spring force provided by elastomeric element is equal,
So the paper transported will not run-off the straight, paper be inclined by correct roller clamping when paper still by provided by elastomeric element
In the device of conveying capacity, paper is inclined by correct roller with not inclined state and clamps, and also can after it have passed through Slant Rectify roller
It continues to transport with not inclined state, it is thus possible to reduce the paper tilt quantity after the correction of Slant Rectify roller.
In paper bearing device of the invention, the center of gravity that can also be formed as above-mentioned paper feed roller is located at above-mentioned central plane
Interior, the center of gravity of above-mentioned lifting plate is located in above-mentioned central plane.
According to this structure, it can prevent because including component that paper feed roller, lifting plate etc. are supported by elastomeric element
In deviation of gravity center central plane, and make the both ends of paper feed roller to the conveying capacity of paper different the case where causing paper to tilt in turn.
Stated differently, since spring force provided by elastomeric element is equal, thus the paper transported will not run-off the straight, in paper quilt
When Slant Rectify roller clamps in device of the paper still by conveying capacity provided by elastomeric element, paper is inclined with not inclined state
Oblique correct roller clamping, also can continue to transport, it is thus possible to reduce after it have passed through Slant Rectify roller with not inclined state
Paper tilt quantity after the correction of Slant Rectify roller.
In paper bearing device of the invention, the spring that above-mentioned elastomeric element includes 2 or more can also be formed as, on
It is symmetrical relative to above-mentioned central plane to state 2 or more springs, on the paper width direction orthogonal with paper conveyance direction, on
State 2 or more springs be located at it is maximum can be in the width of bearing paper and the length of above-mentioned paper feed roller is outside one's consideration.
According to this structure, elastomeric element be located at it is maximum can be in the width of bearing paper and the length of paper feed roller is outside one's consideration, can not only
Enough save space, and spring balancing can be made to support well to support plate, so can balance it is right well
Paper is supported.
In paper bearing device of the invention, it can also be formed as in paper conveyance direction, above-mentioned elastomeric element position
In above-mentioned lifting plate close to above-mentioned paper feed roller side.
According to this structure, in paper conveyance direction, elastomeric element is located at the close paper feed roller side of lifting plate, with elastic portion
Part, which is located at, to be lifted the central of plate or compares close to the case where opposite side of paper feed roller side, can not only will be lifted by elastomeric element
Lift slab lifts and generates inclination, and more stably paper can be made to be connected to supply roller, and thus, it is possible to further prevent paper supply
The both ends of roller are to the conveying capacity of paper different the case where causing paper to tilt in turn.
In paper bearing device of the invention, it can also be formed as being also equipped with limiting component, in limiting component limitation
Supporting part is stated so that above-mentioned supporting part rotates in defined angle.
According to this structure, elastomeric element causes spring force to have differences because of individual difference, and the difference is bigger, then elastic portion
The rotational angle of the support plate as supporting part below part is bigger.Therefore, it by limiting the rotational angle of support plate, can drop
Low support plate interferes a possibility that other part functions.In addition, limiting the rotation angle of support plate, Neng Goubian by limiting component
In installation spring.It is bigger to rotate angle, then it is easier to generate interference with other parts, since the individual difference of spring will not be special
It is prominent, so rotational angle is preferably controlled in 20 °, to be not easy to interfere other parts.
In paper bearing device of the invention, can also be formed as above-mentioned elastomeric element is spring, is fixed to U-shaped
Shape, above-mentioned supporting part support the spring of above-mentioned U-shaped from upper and lower both direction, make above-mentioned lifting plate relative to above-mentioned central plane
Symmetrically.
According to this structure, the position that lifting plate can be more simply adjusted by single spring members makes to be lifted plate phase
It is symmetrical for central plane.Can equally prevent as a result, causes the both ends of paper feed roller to paper because of spring force difference
The case where conveying capacity difference causes paper to tilt in turn.
It is formed in addition, paper bearing device of the invention can be applied to carton, automatic document feeder and image
In device, thus, it is possible to bring effect as described above.
Detailed description of the invention
Fig. 1 is the schematic sectional view of the paper bearing device of first embodiment of the invention.
Fig. 2 is the diagrammatic side section view that the paper bearing device in Fig. 1 is observed along the direction arrow R.
Fig. 3 is the schematic sectional view of the paper bearing device of second embodiment of the present invention.
Fig. 4 is the schematic sectional view of the paper bearing device of third embodiment of the present invention.
Fig. 5 is the schematic sectional view of the paper bearing device of the 4th embodiment of the invention.
Fig. 6 is the diagrammatic side section view that the paper bearing device in Fig. 5 is observed along the direction arrow R.
Fig. 7 is the schematic diagram of the lock state of the locking mechanism in the carton for apply paper bearing device of the invention.
Fig. 8 is the signal of the lock release state of the locking mechanism in the carton for apply paper bearing device of the invention
Figure.
Fig. 9 is the schematic sectional view for being observed from the front the image forming apparatus for applying paper bearing device of the invention.
Description of symbols:
A ... carton；B, B ' ... paper bearing device；C ... paper transport mechanism；D ... auto document feeder；1 ... paper
Box main body；2,2 ' ... support plates (supporting part)；2a, 2 ' a ... support plate main bodys；2b, 2 ' b ... rotating fulcrums；3 ... elastomeric elements
(spring)；The left side 3a ... elastomeric element；The right side 3b ... elastomeric element；3c ... elastomeric element (extended type spring)；4 ... lifting plates；
4a ... hook portion；5 ... paper；The regular plate of 6 paper；The regular plate of the left side 6a ... paper；The regular plate of the right side 6b ... paper；7 ... paper supplies
Roller；8a ... elastomeric element load-bearing part (supporting part)；8b ... elastomeric element limited part (supporting part)；9 ... central planes；10 ... is sliding
Block；11 ... elastomeric elements (extension spring)；The left side 11a ... elastomeric element (left side extension spring)；The right side 11b ... elastomeric element
(right side extension spring)；13 ... locking members；13a ... hook portion；14 ... Lock springs；15 ... limiting components；The left side 15a ... limit
Component processed；The right side 15b ... limiting component；16 ... biasing springs；17 ... pickup rollers.
Specific embodiment
Hereinafter, the preferred embodiment of the present invention is described in detail based on attached drawing.In addition, for those skilled in the art
For member, it can be realized their a variety of alternatives under the enlightenment of these embodiments, moreover, the present invention is not limited thereto
Locate the preferred embodiment of explanation.In addition, hereinafter, being repeated in order to make it easy to understand, being omitted on the attached drawing of part with other accompanying drawings
Diagram.
Firstly, in conjunction with Fig. 9 to the carton, automatic document feeder and image for applying paper bearing device of the invention
Device is formed to be briefly described.Fig. 9 is to be observed from the front the image forming apparatus for applying paper bearing device of the invention
Schematic sectional view.
Image forming apparatus shown in Fig. 9 is the image forming apparatus that image is formed in the recording mediums such as paper.At this
The lower part of image forming apparatus is provided with the carton A for storing paper (such as recording sheet), is provided with paper in carton A
Bogey B, the stack paper (quires) on paper bearing device B carry out for example when through the instruction of not shown controller
When the operation such as printing, pickup roller, which is rubbed with the hands, takes paper on paper bearing device B, by the paper of stacking one by one from top to bottom according to
Secondary stranding takes, and is transported using paper transport mechanism C, thus carries out the relevant operation such as printing.
In addition, it is again provided with the paper bearing device B ' for bearing paper on the top of the image forming apparatus, it should
Paper bearing device B ' is identical as paper bearing device B structure, is contained in the automatic document feeder for transporting original copy
(ADF) in D, stack paper (such as original copy to be scanned or for duplicating) is gone up in the paper bearing device B ', when via not scheming
When the controller shown indicates to operate such as being scanned, duplicated, it is set under the paper conveyance direction of paper bearing device B '
The pickup roller of trip side can rub the paper for taking paper bearing device B ' to be carried with the hands, the relevant operations such as to be scanned, duplicate.
Hereinafter, the specific structure of paper bearing device of the invention is described in detail.Paper bearing device B ' and paper
It is identical to open bogey B structure, thus, this is described in detail centered on sentencing paper bearing device B, and omits paper bearing
The explanation of device B '.
First embodiment
Fig. 1 is the schematic sectional view of the paper bearing device of first embodiment of the invention.Fig. 2 is along the direction arrow R
Observe the diagrammatic side section view of the paper bearing device in Fig. 1.For ease of description, top (upside) will be set as on the upside of Fig. 1,
It will be set as lower section (downside) on the downside of Fig. 1, front will be set as on the left of Fig. 1, rear will be set as on the right side of Fig. 1, by the left side of Fig. 2
It is set as left (left side), right (right side) will be set as on the right side of Fig. 2.
As shown in Figure 1, Figure 2, shown in Fig. 9, paper bearing device B is contained in the carton that the lower part of image forming apparatus is arranged in
In A, carton A has carton body 1, and the outer surface of the carton body 1 is provided with handle (not shown), so that operator will
It is pulled out.Upper right side in paper conveyance direction downstream side, that is, Fig. 1 of paper bearing device B, it is adjacent with paper bearing device B
Ground is provided with the confession for supplying and transporting the paper 5 in paper bearing device B (paper 5 that aftermentioned lifting plate 4 is carried)
Paper bowl 7.In addition, being correspondingly provided with paper feed roller 7 for rubbing the pickup roller 17 for taking paper with the hands.
The paper bearing device B being set in carton A mainly has the lifting plate 4 of bearing paper 5, limitation paper width side
The elastomeric element 3 of the regular plate 6 of paper, bearing lifting plate 4 to position and the branch as supporting part for supporting elastomeric element 3
Board 2.
It is lifted plate 4 and is used for bearing paper 5, supported by elastomeric element 3, and can be not shown on the left of Fig. 1 to be set to
Rotation axis centered on rotate upwardly and downwardly within the specified scope.The regular plate 6 of paper is set on lifting plate 4, can be in paper width
The position of regular paper 5 on direction, keeps the center of paper in the direction of the width consistent with the center of supply roller 7, i.e., paper 5 is in width
The center line in degree direction is located in central plane 9 (for being described in detail after central plane 9).In the lower section of lifting plate 4, preferably
Below the rear end of lifting plate 4, that is, in paper conveyance direction, in 7 side of close paper feed roller of lifting plate 4, be arranged useful
(it is in the present embodiment two elastomeric elements in left and right, i.e., is located in the one or more elastomeric element 3 for supporting the lifting plate 4
The left side elastomeric element 3a of left and right side elastomeric element 3b positioned at right), which is, for example, helical spring, plate
The flexible elastomeric elements such as spring, U-shaped spring (being in the present embodiment helical spring), to lifting plate 4 towards upper when normal
Fang Jinhang force, in addition, elastomeric element 3 can also be replaced by other flexible parts such as sponge.Support plate 2 is set to left side
The lower section of elastomeric element 3a and right side elastomeric element 3b support left side elastomeric element 3a and right side elastomeric element 3b.
Specifically, being set as central plane 9 by the plane of paper width direction center line along the vertical direction for being located at, prop up
The rotating fulcrum 2b of board 2 is located in the central plane 9 for passing through paper width direction center line along the vertical direction, 2 energy of support plate
It is enough to be rotated centered on rotating fulcrum 2b, so that left side elastomeric element 3a is identical with the spring force of right side elastomeric element 3b,
Thus make when through 7 paper supply of paper feed roller, lifting plate 4 is in paper width direction relative to the symmetrical two sides of central plane 9
Stress is identical.
More specifically, in the present embodiment, left side elastomeric element 3a and right side elastomeric element 3b are with the central plane 9
Centered on and it is symmetrical, the conveying capacity of paper 5 overcomes the quilts such as lifting plate 4, paper 5 and the regular plate 6 of paper by elastomeric element 3
The gravity for the component that elastomeric element 3 supports generates.As left side elastomeric element 3a and right side elastomeric element 3b because individual difference is led
When causing spring force difference, under the action of the different spring force, support plate 2 can be rotated centered on rotating fulcrum 2b,
Until spring force provided by left side elastomeric element 3a and right side elastomeric element 3b becomes equal.
Thereby, it is possible to guarantee 5 left end of paper to central plane 9 distance and 5 right end of paper to central plane 9 distance phase
Deng, the center of gravity (roller length direction center) of paper feed roller 7 is located in central plane 9, and the center of gravity of support plate 2 is located in central plane 9,
That is, the rotating fulcrum 2b of support plate 2 is located in central plane 9.By guaranteeing left side elastomeric element 3a and right side elastomeric element 3b
Provided spring force is equal, can make when through 7 paper supply of paper feed roller, and lifting plate 4 is in paper width direction relative in
The stress of the symmetrical two sides of heart plane 9 is identical, and then makes 7 both ends of paper feed roller to the conveying capacity of paper 5 close to equal, paper feed roller 7
Both ends are smaller to the difference of the conveying capacity of paper 5, and the paper inclination of generation is smaller.If it is regular to be lifted plate 4, paper 5 and paper
Plate 6 etc. is adjusted in central plane 9 as described above by the center of gravity for the component that elastomeric element 3 supports, then can make paper feed roller 7
Both ends are to the conveying capacity of paper 5 close to equal.
In addition, elastomeric element 3 causes spring force to have differences because of individual difference, the difference is bigger, then under elastomeric element 3
The rotational angle of the support plate 2 of side is bigger.Therefore, in paper bearing device B, it can be arranged in the lower section of support plate 2 and limit
Component 15, in the present embodiment, there are two limiting component, i.e. left side limiting component 15a and right side limits for symmetrically setting
Component 15b processed limits support plate 2 so that support plate 2 rotates in defined angle.Turned as a result, by limitation support plate 2
Dynamic angle, can reduce a possibility that support plate 2 interferes other part functions.In addition, limiting support plate 2 by limiting component 15
Rotation angle, spring can be easily installed.It is bigger to rotate angle, then it is easier to generate interference with other parts, due to spring
Individual difference will not be particularly pertinent, so rotational angle is preferably controlled in 20 °, to be not easy to interfere other parts.
In addition, in Fig. 2, to save space, left side elastomeric element 3a and right side elastomeric element 3b spacing are less than paper most
Big width is lifted the stabilization of plate 4 to allow, and left side elastomeric element 3a and right side elastomeric element 3b spacing are greater than the length of paper feed roller 7.Make
Two are not limited to for the spring of elastomeric element 3, as long as symmetrical with central plane 9, or 1 or 3 or more.
In addition, the position of elastomeric element takes paper bowl side in the close of lifting plate 4 in Fig. 1.Plate 4 is lifted by elastomeric element 3
It lifts and generates inclination, but not limited to this, elastomeric element also can be set in other positions.
In addition, elastomeric element 3 is not limited to be mounted on the lower section of lifting plate 4, the top that can also be located at lifting plate 4 (is detailed in
Aftermentioned 4th embodiment).But the lower section that elastomeric element 3 is installed on lifting plate 4 can be reduced into vertical direction (up and down direction)
On space.
In addition, carton A can also be further equipped with locking mechanism.Specifically, such as shown in Fig. 7 and Fig. 8, in carton body
It is provided with Lock spring 14 on 1, is linked with locking member 13 with 1 opposite side of carton body in Lock spring 14, is locking
Component 13 is provided with hook portion 13a.With the hook portion 13a of locking member 13 correspondingly, lifting plate 4 on be provided with hook portion
4a。
After carton A is extracted out from image forming apparatus, lifting plate 4 is pressed, the hook portion 4a of lifting plate 4 is locked in sticking department
The hook portion 13a of part 13, supplements paper at this time.After paper supplements, carton A is pushed into, in push-on process, locking member
13 stress and to mobile on the left of Fig. 8, the locking of lifting plate 4 is released from.The purpose done so is, when quires is put into lift by user
When on lift slab 4, if keeping lifting plate 4 fixed, user can be facilitated to be put into paper.In addition, locking member 13 can also be with
Carton A linkage automatically locks lifting plate 4 when user extracts carton A out.
Structure according to first embodiment, due to the presence of rotating fulcrum 2b, so working as left side elastomeric element 3a and the right side
When spring force difference provided by the elastomeric element 3b of side, the rotatable support plate 4 of 3 lower section of elastomeric element rotates, until
Spring force provided by left side elastomeric element 3a and right side elastomeric element 3b is equal.Thereby, it is possible to make by 7 paper supply of paper feed roller
When, lifting plate 4 is identical in the stress relative to the symmetrical two sides of central plane 9 of paper width direction, and then can prevent out
The case where now causing the both ends of paper feed roller 7 different to the conveying capacity of paper 5 because of spring force difference and then paper is caused to tilt.It changes
Sentence is talked about, and the spring force as provided by left side elastomeric element 3a and right side elastomeric element 3b is equal, so the paper 5 transported
Will not run-off the straight, paper 5 be inclined by correct roller clamping when paper still by the device of conveying capacity provided by elastomeric element 3
In, paper 5 is inclined by correct roller with not inclined state and clamps, also can be with not inclined shape after it have passed through Slant Rectify roller
State continues to transport, it is thus possible to reduce the paper tilt quantity after the correction of Slant Rectify roller.
Second embodiment
Compared with the paper bearing device of first embodiment, in the paper bearing device of second embodiment, such as Fig. 3
It is shown, it only used an elastomeric element (extended type spring) 3c instead of two elastomeric element (spring) 3a, 3b, the elastic portion
Part 3c is similarly provided at the lower section of lifting plate 4 than elastomeric element 3a, 3b long, applies upward when normal to lifting plate 4
Power.
Specifically, it is arranged in a manner of surrounding elastomeric element 3c as supporting part in the following above and of elastomeric element 3c
There is the elastomeric element load-bearing part 8a of U-shaped and is also bent into the elasticity of U-shaped with the radius less than elastomeric element load-bearing part 8a
Component limited part 8b, elastomeric element load-bearing part 8a are set to the lower section of elastomeric element 3c, and elastomeric element limited part 8b is set to bullet
The top of property component 3c.Elastomeric element 3c is fixed by the elastomeric element load-bearing part 8a and elastomeric element limited part 8b of U-shaped
For U-shaped.The both ends for being fixed to the elastomeric element 3c of U-shaped are respectively at the two sides of central plane 9, and are connected to lifting plate
4, under the bearing and limitation of elastomeric element load-bearing part 8a and elastomeric element limited part 8b, the both ends of elastomeric element 3c can be to lift
Lift slab 4 provides equal spring force.
According to the present embodiment, the position that lifting plate 4 can be more simply adjusted by single spring members 3c, makes to lift
Lift slab 4 is symmetrical relative to central plane 9.The both ends for leading to paper feed roller 7 because of spring force difference can be equally prevented as a result,
The case where causing paper to tilt in turn different to the conveying capacity of paper 5.Stated differently, since spring provided by spring members 3c
Power is equal, thus the paper 5 transported will not run-off the straight, paper 5 be inclined by correct roller clamping when paper still by elastic portion
In the device of conveying capacity provided by part 3, paper 5 is inclined by correct roller with not inclined state and clamps, and rectifys have passed through inclination
It also can continue to transport with not inclined state after positive roller, it is thus possible to reduce the paper after the correction of Slant Rectify roller and incline
Gradient.
Third embodiment
Compared with the paper bearing device of second embodiment, in the paper bearing device of third embodiment, such as Fig. 4
Left side elastomeric element 3d and right side bullet shown, that used length shorter instead of single elastomeric element (extended type spring) 3c
Property component 3e, left side elastomeric element 3d and right side elastomeric element 3e be symmetrically set to lifting plate 4 lower section, to lift when normal
Lift slab 4 exerts a force upward.
Specifically, as supporting part, the following above and of elastomeric element 3d and right side elastomeric element 3e in left side, to surround
The mode of left side elastomeric element 3d and right side elastomeric element 3e are provided with the elastomeric element load-bearing part 8a ' and elasticity of substantially U-shaped
The shape of component limited part 8b ', elastomeric element load-bearing part 8a ' and elastomeric element limited part 8b ' are relative to second embodiment
Elastomeric element load-bearing part 8a and the shape of elastomeric element limited part 8b in middle position to be formed as this linear point different.Pass through
The substantially elastomeric element load-bearing part 8a ' and elastomeric element limited part 8b ' of U-shaped is by left side elastomeric element 3d and right side elastomeric element
3e is fixed as whole in substantially U-shaped.
In addition, being provided with sliding block 10 between left side elastomeric element 3d and right side elastomeric element 3e, which can be left
Right sliding, such as horizontally slip along the linear part of elastomeric element load-bearing part 8a ' He elastomeric element limited part 8b ', also,
It is fixed to the whole both ends in substantially the left side elastomeric element 3d and right side elastomeric element 3e of U-shaped i.e. left side elastomeric element 3d
Left end and right side elastomeric element 3e right end be connected to respectively lifting plate 4.As a result, in elastomeric element load-bearing part 8a ' and elasticity
Under the bearing and limitation of component limited part 8b ', the left end of left side elastomeric element 3d and the right end of right side elastomeric element 3e can be right
Lifting plate 4 provides equal spring force.
Specifically, as left side elastomeric element 3d and right side elastomeric element 3e because individual difference causes spring force different
When, sliding block 10 can slide, until spring force provided by left side elastomeric element 3d and right side elastomeric element 3e is equal, so that paper supply
To the conveying capacity of paper 5 close to equal, 7 both ends of paper feed roller are smaller to the difference of the conveying capacity of paper 5, then generate at roller 7 both ends
Paper inclination is smaller.
4th embodiment
Compared with the paper bearing device of first embodiment, in the paper bearing device of the 4th embodiment, such as scheme
5, shown in Fig. 6, the top of lifting plate 4 is provided with two elastomeric elements 11 in left and right i.e. left side elastomeric element 11a and right side elasticity
Component 11b, left side elastomeric element 11a and right side elastomeric element 11b are extension spring, left side elastomeric element 11a and right side bullet
Property component 11b is symmetrical centered on central plane 9.Left side elastomeric element 11a and right side elastomeric element 11b are held above
Portion and lower end are respectively provided with hook portion, are caught on respectively by hook portion and are set to left side elastomeric element 11a and right side elasticity
The top of component 11b as supporting part support plate 2 ' and be set to left side elastomeric element 11a and right side elastomeric element 11b
Lower section lifting plate 4, with keep be lifted 4 not run-off the straight of plate.
Specifically, the 2 ' b of rotating fulcrum of the support plate 2 ' above left side elastomeric element 11a and right side elastomeric element 11b
In central plane 9.Support plate 2 ' can be rotated centered on 2 ' b of rotating fulcrum, so that lifting plate 4 is relative to center
Plane 9 is symmetrical.More specifically, in the present embodiment, left side elastomeric element 11a and right side elastomeric element 11b are with the center
Symmetrical centered on plane 9, the conveying capacity of paper 5 overcomes lifting by left side elastomeric element 11a and right side elastomeric element 11b
The component gravity that plate 4, paper 5 and the regular plate 6 of paper etc. are lifted by left side elastomeric element 11a and right side elastomeric element 11b produces
It is raw.It is different at this as left side elastomeric element 11a and right side elastomeric element 11b because when individual difference leads to spring force difference
Under the action of spring force, support plate 2 ' can be rotated centered on 2 ' b of rotating fulcrum, left side elastomeric element 11a and right side bullet
Property component 11b can be rotated centered on 2 ' b of rotating fulcrum.Until two left side elastomeric element 11a and right side elastomeric element 11b institute
The spring force of offer becomes equal.
As described above, being had been described in detail to specific embodiment of the invention, but the present invention is not limited to above-mentioned each
Embodiment also can according to need and above-mentioned each embodiment be freely combined, and include technical idea of the invention
It is made various changes in range.
Claims (10)
1. it is a kind of for be carried through paper feed roller supply paper paper bearing device comprising:
It is lifted plate, bearing paper；
Elastomeric element supports the lifting plate；And
Supporting part supports the elastomeric element,
The paper bearing device is characterized in that,
It suppose there is central plane, which is the face for passing through paper width direction center line along the vertical direction, passing through
When stating paper feed roller paper supply, stress phase relative to the central plane symmetrical two sides of the lifting plate in paper width direction
Together.
2. paper bearing device according to claim 1, which is characterized in that
The supporting part is support plate,
The rotating fulcrum of the support plate is located in central plane, and the support plate can be carried out centered on the rotating fulcrum
Rotation.
3. paper bearing device according to claim 1 or 2, which is characterized in that
The center of gravity of the paper feed roller is located in the central plane,
The center of gravity of the lifting plate is located in the central plane.
4. paper bearing device described in any one of claim 1 to 3, which is characterized in that
The elastomeric element includes 2 or more springs,
Described 2 or more springs are symmetrical relative to the central plane,
On the paper width direction orthogonal with paper conveyance direction, described 2 or more springs are located at maximum can bearing paper
Width in and the length of the paper feed roller be outside one's consideration.
5. paper bearing device according to claims 1 to 4, which is characterized in that
In paper conveyance direction, the elastomeric element is located at the close paper feed roller side of the lifting plate.
6. paper bearing device according to any one of claims 1 to 5, which is characterized in that
It is also equipped with limiting component, which limits the supporting part so that the supporting part rotates in defined angle.
7. according to right want 1 described in paper bearing device, which is characterized in that
The elastomeric element is spring, is fixed to U-shaped,
The supporting part supports the spring of the U-shaped from upper and lower both direction, keeps the lifting plate flat relative to the center
Face is symmetrical.
8. a kind of carton, which is characterized in that have paper bearing device according to any one of claims 1 to 7.
9. a kind of automatic document feeder, which is characterized in that have paper bearing according to any one of claims 1 to 7
Device.
10. a kind of image forming apparatus, which is characterized in that have paper bearing dress according to any one of claims 1 to 7
It sets.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711146527.5A CN109795901A (en) | 2017-11-17 | 2017-11-17 | Paper bearing device, carton, automatic document feeder and image forming apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711146527.5A CN109795901A (en) | 2017-11-17 | 2017-11-17 | Paper bearing device, carton, automatic document feeder and image forming apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109795901A true CN109795901A (en) | 2019-05-24 |
Family
ID=66555993
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711146527.5A Pending CN109795901A (en) | 2017-11-17 | 2017-11-17 | Paper bearing device, carton, automatic document feeder and image forming apparatus |
Country Status (1)
| Country | Link |
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| CN (1) | CN109795901A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112277485A (en) * | 2020-10-27 | 2021-01-29 | 山西慧图同创科技有限公司 | Service method based on medical record self-service terminal |
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| CN112277485B (en) * | 2020-10-27 | 2022-03-01 | 山西慧图同创科技有限公司 | Service method based on medical record self-service terminal |
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Application publication date: 20190524 |