CN104252123A - Fixing device and image forming device - Google Patents
Fixing device and image forming device Download PDFInfo
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- CN104252123A CN104252123A CN201310257724.XA CN201310257724A CN104252123A CN 104252123 A CN104252123 A CN 104252123A CN 201310257724 A CN201310257724 A CN 201310257724A CN 104252123 A CN104252123 A CN 104252123A
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- bearing
- fixing roller
- jut
- center
- breach
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- Rolls And Other Rotary Bodies (AREA)
Abstract
The invention relates to a fixing device and an image forming device. The fixing device is provided with a fixing roller, two bearings arranged at the two ends of the fixing roller, and bearing mounting portions, wherein the outer surfaces of the bearings are provided with at least two first limiting parts; the first limiting parts are provided with first bumps which extend along the circumferential directions of the bearings and are closed to the center of the fixing roller, and second bumps which extend along the axial direction of the fixing roller and are close to the end part of the fixing roller; the bearing mounting portions are provided with open portions which are consistent with the appearances of the bearings, axial blocking parts arranged on the edges of the open portions, and first gaps corresponding to the shapes of the first limiting parts. The axial blocking parts can be used for preventing the bearings from moving axially, and the rotation of the bearings is prevented due to contact of the side edges of the first gaps with the second bumps, so that the bearings can be stably locked in the bearing mounting portions without moving axially or rotating, and the fixing roller can be stably supported and prevented from falling off from a frame body.
Description
Technical field
The present invention relates to a kind of fixing device, and the image processing system containing this fixing device.
Background technology
The fixing roller image processing systems such as printer, duplicating machine or facsimile recorder being provided with heating source built-in.When next image forms instruction when image processing system receives host computer transmission, just start to heating source energising, with heat fixing roll, drive fixing roller rotation simultaneously.When the recording medium thing of the coloured dust figure of surface attachment is through fixing roller, this recording medium thing is at fixing roller and seize on both sides by the arms lower with the backer roll that this fixing roller subtend is arranged and be heated and pressurized, so toner picture is just fixed on recording medium thing, thus complete an image formation.
In order to make recording medium thing can stably be seized on both sides by the arms in fixing, to make the image ratio of formation more clear, therefore needing respectively bearing to be installed at the two ends of fixing roller, to support this fixing roller, and then two bearings being fixed in framework.
But, because fixing roller can give the inside surface of bearing with the friction force continued when rotating, therefore, along with the growth of service time and increasing of access times, bearing can be shifted gradually in framework, and produces when fixing roller rotates and rock, thus cannot reach the object of stable support fixing roller, finally cause the image formed that hangover or blooming occur
Summary of the invention
The present invention carries out to solve the problem, and object is to provide that a kind of have can stable support fixing roller and the fixing device of the bearing that cannot come off from framework, and the image processing system containing this fixing device.
The present invention to achieve these goals, have employed following structure:
< structure 1>:
The invention provides a kind of fixing device, it is characterized in that, comprising: fixing roller, for the toner picture be attached on recording medium thing is fixed on recording medium thing; Two bearings, are arranged on the two ends of fixing roller; Framework, there are two axle bearing mount portion, for installing two bearings respectively, wherein, the outside surface of bearing is provided with the first locating part that at least two have predetermined space, and the first locating part has: the circumferencial direction along bearing extends and first jut at close fixing roller center; And extend and the second jut of close fixing roller end along the axis of fixing roller, axle bearing mount portion has the peristome conformed to the profile of bearing, be arranged on peristome edge and for stopping the axial block piece that bearing moves axially, and first breach corresponding respectively with the shape of the first locating part, the edge of the first breach contacts with the second jut, for stopping the rotation of bearing.
< structure 2>:
The invention provides a kind of image processing system, it is characterized in that, comprise fixing device, this fixing device has fixing roller, for the toner picture be attached on recording medium thing is fixed on recording medium thing; Two bearings, are arranged on the two ends of fixing roller; Framework, there are two axle bearing mount portion, for installing two bearings respectively, wherein, the outside surface of bearing is provided with the first locating part that at least two have predetermined space, and the first locating part has: the circumferencial direction along bearing extends and first jut at close fixing roller center; And extend and the second jut of close fixing roller end along the axis of fixing roller, axle bearing mount portion has the peristome conformed to the profile of bearing, be arranged on peristome edge and for stopping the axial block piece that bearing moves axially, and first breach corresponding respectively with the shape of the first locating part, the edge of the first breach contacts with the second jut, for stopping the rotation of bearing.
The effect of invention and effect
According to fixing device of the present invention and image processing system, because in this fixing device, the axial block piece being arranged on the peristome edge of axle bearing mount portion can stop that bearing moves axially, the side being arranged on first breach at this peristome edge contacts with the second jut, and then stop the rotation of bearing, so bearing can be firmly locked together in axle bearing mount portion, can not move axially, can not rotate, be conducive to fixing roller stably to be supported by bearing when rotating, thus avoid the final image formed that hangover or blooming occur.
Accompanying drawing explanation
Fig. 1 is the stereographic map of the image processing system of the embodiment of the present invention;
Fig. 2 is the cut-away view of the image processing system of the embodiment of the present invention;
Fig. 3 is the exploded view of the fixing device of the embodiment of the present invention;
Fig. 4 is the structural representation of the fixing roller of the embodiment of the present invention;
Fig. 5 is the schematic diagram of the drive member of the embodiment of the present invention;
Fig. 6 is the drive member of the embodiment of the present invention and the installation assembly figure of fixing roller;
Fig. 7 is the schematic diagram of the abutment end of the bearing of the embodiment of the present invention;
Fig. 8 is the schematic diagram of the non-abutment end of the bearing of the embodiment of the present invention;
Fig. 9 is the structural drawing of the framework of the embodiment of the present invention;
Figure 10 is the structural drawing of the first locating part of the embodiment of the present invention;
Figure 11 is the bearing of the embodiment of the present invention and the installation assembly figure of framework;
Figure 12 is the side view of Figure 11;
Figure 13 is the installation assembly figure of the fixing roller of the embodiment of the present invention, bearing and framework;
Figure 14 is the stereographic map of the drive end side cover of the embodiment of the present invention;
Figure 15 is the installation assembly schematic diagram of the drive end side cover of the embodiment of the present invention, drive member and bearing;
Figure 16 is that the A of Figure 15 is to schematic diagram;
Figure 17 is the stereographic map of the driven end of the fixing roller of the embodiment of the present invention;
Figure 18 is the front view of the driven end of the fixing roller of the embodiment of the present invention;
Figure 19 is the structural representation of the driven end bracket part of the embodiment of the present invention;
Figure 20 is the bearing of the embodiment of the present invention and the installation assembly schematic diagram of driven end bracket part;
Figure 21 is the side view of Figure 20;
Figure 22 is the installation assembly figure of the drive member of the embodiment of the present invention, bearing and fixing roller;
Figure 23 is the stereographic map of the driven end side cover of the embodiment of the present invention;
Figure 24 is the front view of the driven end side cover of the embodiment of the present invention; And
Figure 25 is the assembly drawing of the fixing device of the embodiment of the present invention.
Embodiment
Below in conjunction with drawings and Examples, the fixing device that the present invention relates to and image processing system are described in detail.
The invention provides a kind of fixing device, it is characterized in that, comprising: fixing roller, for the toner picture be attached on recording medium thing is fixed on recording medium thing; Two bearings, are arranged on the two ends of fixing roller; Framework, there are two axle bearing mount portion, for installing two bearings respectively, wherein, the outside surface of bearing is provided with the first locating part that at least two have predetermined space, and the first locating part has: the circumferencial direction along bearing extends and first jut at close fixing roller center; And extend and the second jut of close fixing roller end along the axis of fixing roller, axle bearing mount portion has the peristome conformed to the profile of bearing, be arranged on peristome edge and for stopping the axial block piece that bearing moves axially, and first breach corresponding respectively with the shape of the first locating part, the edge of the first breach contacts with the second jut, for stopping the rotation of bearing.
In addition, in above-mentioned fixing device, such feature can also be had: the first jut and the second jut form convex shape projection.
In addition, in above-mentioned fixing device, such feature can also be had: the first locating part is two, formed by the center of two the first locating parts and the circle center line connecting of bearing, angle is 120 °, first breach is two, and formed by the center of two the first breach and the line at peristome center, angle is 120 °.
In addition, in above-mentioned fixing device, such feature can also be had: the outside surface of bearing is also provided with at least one second locating part, the circumferencial direction that second locating part has along bearing extends and the 3rd jut at close fixing roller center, 3rd protruding part is between two the first locating parts, have the shape identical with the first jut, the edge of the peristome of axle bearing mount portion is also provided with second breach corresponding respectively with the shape of the second locating part.
In addition, in above-mentioned fixing device, such feature can also be had: the second locating part is one, formed by the center of the 3rd jut and the circle center line connecting of bearing and the center of the first jut and the circle center line connecting of bearing, angle is 120 °, second breach is one, and formed by the center of the center of the second breach and the line at peristome center and the first breach and the line at peristome center, angle is 120 °.
In addition, in above-mentioned fixing device, can also have such feature: axial block piece is bending hook, bending hook profile is L shape, raised and towards the axle bending of fixing roller to fixing roller center position from peristome edge.
In addition, above-mentioned fixing device also comprises: drive member, is connected with the drive end of fixing roller, rotates for driving fixing roller; And drive end side cover, for installing drive member, wherein, drive end side covers and is also provided with the position blocking pin corresponding with the second jut of the first locating part, contact with the side of the non-of the second jut with the edge contact of the first breach, for stopping rotating backward of bearing.
In addition, above-mentioned fixing device also comprises: driven end side cover, for installing the driven end of fixing roller, wherein, driven end side cover is also provided with the blocking pin corresponding with the second jut of the first locating part, contact with the side of the non-of the second jut with the edge contact of the first breach, for stoping rotating backward of bearing.
Further, above-mentioned fixing device also comprises: spacing ring, be enclosed within the driven end of fixing roller, abut against with the side of the close driven end of bearing, for limiting moving axially of bearing, wherein, spacing ring has at least one bending part, the driven end of fixing roller is provided with the installation through hole that at least one and bending part match, for installing bending part.
The present invention also provides a kind of image processing system, it is characterized in that, comprise: fixing device, for the toner picture be attached on recording medium thing is fixed on recording medium thing, this fixing device comprises: fixing roller, for the toner picture be attached on recording medium thing is fixed on recording medium thing; Two bearings, are arranged on the two ends of fixing roller; Framework, there are two axle bearing mount portion, for installing two bearings respectively, wherein, the outside surface of bearing is provided with the first locating part that at least two have predetermined space, and the first locating part has: the circumferencial direction along bearing extends and first jut at close fixing roller center; And extend and the second jut of close fixing roller end along the axis of fixing roller, axle bearing mount portion has the peristome conformed to the profile of bearing, be arranged on peristome edge and for stopping the axial block piece that bearing moves axially, and first breach corresponding respectively with the shape of the first locating part, the edge of the first breach contacts with the second jut, for stopping the rotation of bearing.
In addition, in above-mentioned fixing device, such feature can also be had: the first jut and the second jut form convex shape projection.
In addition, in above-mentioned fixing device, such feature can also be had: the first locating part is two, formed by the center of two the first locating parts and the circle center line connecting of bearing, angle is 120 °, first breach is two, and formed by the center of two the first breach and the line at peristome center, angle is 120 °.
In addition, in above-mentioned fixing device, such feature can also be had: the outside surface of bearing is also provided with at least one second locating part, the circumferencial direction that second locating part has along bearing extends and the 3rd jut at close fixing roller center, 3rd protruding part is between two the first locating parts, have the shape identical with the first jut, the edge of the peristome of axle bearing mount portion is also provided with second breach corresponding respectively with the shape of the second locating part.
In addition, in above-mentioned fixing device, such feature can also be had: the second locating part is one, formed by the center of the 3rd jut and the circle center line connecting of bearing and the center of the first jut and the circle center line connecting of bearing, angle is 120 °, second breach is one, and formed by the center of the center of the second breach and the line at peristome center and the first breach and the line at peristome center, angle is 120 °.
In addition, in above-mentioned fixing device, can also have such feature: axial block piece is bending hook, bending hook profile is L shape, raised and towards the axle bending of fixing roller to fixing roller center position from peristome edge.
In addition, above-mentioned fixing device also comprises: drive member, is connected with the drive end of fixing roller, rotates for driving fixing roller; And drive end side cover, for installing drive member, wherein, drive end side covers and is also provided with the position blocking pin corresponding with the second jut of the first locating part, contact with the side of the non-of the second jut with the edge contact of the first breach, for stopping rotating backward of bearing.
In addition, above-mentioned fixing device also comprises: driven end side cover, for installing the driven end of fixing roller, wherein, driven end side cover is also provided with the blocking pin corresponding with the second jut of the first locating part, contact with the side of the non-of the second jut with the edge contact of the first breach, for stoping rotating backward of bearing.
Further, above-mentioned fixing device also comprises: spacing ring, be enclosed within the driven end of fixing roller, abut against with the side of the close driven end of bearing, for limiting moving axially of bearing, wherein, spacing ring has at least one bending part, the driven end of fixing roller is provided with the installation through hole that at least one and bending part match, for installing bending part.
Embodiment
Fig. 1 is the stereographic map of the image processing system of the embodiment of the present invention.
Fig. 2 is the cut-away view of the image processing system of the embodiment of the present invention.
As shown in Figure 1, 2, the type of the image processing system 1 in the present embodiment is minicomputer, for carrying out image formation on the such as recording medium such as paper, film thing, comprise sheet feed section 35, conveying roller 36, graphics processing unit 38, fixing device 2 and paper discharge unit 37.
Sheet feed section 35 is for holding recording medium thing.
Conveying roller 36 is delivered to graphics processing unit 38 for the recording medium thing held by sheet feed section 35.
The image forming information that the epigyny device do not shown in graphics processing unit 38 reception figure sends over, and the toner picture corresponding with this image forming information is formed on recording medium thing.
Fig. 3 is the exploded view of the fixing device of the embodiment of the present invention.
As shown in Figure 3, fixing device 2 is for being fixed on the toner picture be attached on recording medium thing this recording medium thing, thus formation permanent image, comprise fixing roller 5, backer roll 4, framework 3, two bearings 7, drive member 8, driving ring 9, spacing ring 10 and two side covers.
Fig. 4 is the structural representation of the fixing roller of the embodiment of the present invention.
As shown in Figure 4, fixing roller 5 is for carrying out heat fixation to the toner picture on recording medium thing.Fixing roller 5 is built-in with the heating source for heating fixing roller 5 do not shown in figure.When fixing roller 5 rotates, this heating source can heat up, and transfers heat to fixing roller 5, and passes to the recording medium thing being fixed roller 5 and carrying further, thus makes this toner as heat fixation on recording medium thing.
Fixing roller 5 two ends are vertically respectively drive end 27 and driven end 28.Drive end 27 is connected with the drive member do not shown in figure, under the drive of drive member, carry out spinning movement.Drive end 27 is provided with two the first through holes 15, and these two the first through holes 15 distribute axisymmetricly in the central shaft both sides of fixing roller 5.Driven end 28 is positioned at the offside of drive end 27, is also provided with two the second through holes 16 above, and these two the second through holes 16 also distribute axisymmetricly in the central shaft both sides of fixing roller 5.
Backer roll 4 is crimped on fixing roller 5 with certain pressure, seizes recording medium thing together with fixing roller 5 on both sides by the arms, and gives recording medium thing with certain pressure.When recording medium thing is fixed roller 5 and backer roll 4 seizes conveying on both sides by the arms, this recording medium thing can be heated and pressurized simultaneously, thus toner picture is fixed up on recording medium thing, forms permanent image.
Fig. 5 is the schematic diagram of the drive member of the embodiment of the present invention.
As shown in Figure 5, drive member 8 is connected with the drive end 27 of fixing roller 5, for driving this fixing roller 5 to rotate, to drive the conveying of recording medium thing.In the present embodiment, drive member 8 is driven wheel, but the present embodiment does not draw the gear shape of driven wheel.The side be connected with the drive end 27 of fixing roller 5 of drive member 8 is provided with two drive end through holes 14.
Driving ring 9 is circular open loop structure, and have two bending parts 13 bent to the center of circle, the shape of these two bending parts 13 is consistent with two drive end through holes 14, can embed in these two drive end through holes 14.Driving ring 9 is made up of tension materials, when the bending part 13 of driving ring 9 embeds in two drive end through holes 14, the tension force of driving ring 9 can ensure that bending part 13 tightly fastens in drive end through hole 14, and is unlikely to outwards to deviate from, thus guarantees combining closely of driving ring 9 and drive end through hole 14.
Fig. 6 is the drive member of the embodiment of the present invention and the installation assembly figure of fixing roller.
As shown in Figure 6, the position of drive end through hole 14 in drive member 8 conforms to the first position of through hole 15 on fixing roller 5, the shape of shape also with the first through hole 15 of drive end through hole 14 conforms to, therefore, when carrying out installation assembly to drive member 8 and fixing roller 5, first the first through hole 15 of the drive end 27 of the drive end through hole 14 in drive member 8 and fixing roller 5 is alignd, and then the bending part 13 on driving ring 9 is embedded in drive end through hole 14 and the first through hole 15.Due to the tension force effect of bending part 13 self, so drive end through hole 14 and the first through hole 15 can tightly be fastened togather by bending part 13, make drive member 8 that the drive end 27 of fixing roller 5 can be driven to make synchronous axial system, and be unlikely to skidding occurs.
Fig. 7 is the schematic diagram of the abutment end of the bearing of the embodiment of the present invention.
Fig. 8 is the schematic diagram of the non-abutment end of the bearing of the embodiment of the present invention.
As shown in Figure 7,8, the profile of bearing 7 is annular, and the two ends axially along fixing roller 5 are respectively abutment end 30 and non-abutment end 31, are radially divided into inside surface and outside surface.The inside surface of bearing 7 is not connected with the end of fixing roller 5 is fastening, but is enclosed within the end of fixing roller 5, and with its sliding contact.In the present embodiment, bearing 7 number has two, is arranged on the two ends of fixing roller 5, and one of them is enclosed within the drive end 27 of fixing roller 5, and another one is enclosed within the driven end 28 of fixing roller 5.
The outside surface of bearing 7 is provided with two the first locating parts 32 and second locating part 40.
Two the first locating parts 32 are separated by preset distance on the outside surface of bearing 7, and namely, angle α formed by two centers of the first locating part 32 and the circle center line connecting of bearing 7 is 120 °.First locating part 32 has the first jut 17 and the second jut 18.First jut 17 extends and close fixing roller 5 center along the circumferencial direction of bearing 7, and the second jut 18 extends also near fixing roller 5 end along the axis of fixing roller 5.First jut 17 and the second jut 18 are forming convex shape projection along non-abutment end 31 center to the direction of abutment end 30 line of centres, namely, the tip end of convex shape is the second jut 18, butt end is the first jut 17, first jut 17 is near the abutment end 30 of bearing 7, second jut 18 near the non-abutment end 31 of bearing 7, and be positioned at the first jut 17 along on the center line axially of fixing roller 5.The thickness sum of the first jut 17 and the second jut 18 is more than or equal to the thickness of bearing 7, and in the present embodiment, the thickness sum of the first jut 17 and the second jut 18 equals the thickness of bearing 7.
Second locating part 40 is also separated by the outside surface of bearing 7 with two the first locating parts 32 preset distance respectively, and namely, angle formed by the center of the second locating part 40 and the center of the circle center line connecting of bearing 7 and the first locating part 32 and the circle center line connecting of bearing 7 is 120 °.The circumferencial direction that second locating part 40 has along bearing 7 extends the 3rd jut the 41, three jut 41 at also close fixing roller 5 center between two the first locating parts 32, has the shape identical with the first jut 41.In the present embodiment, the structure of the second locating part 40 is different with the first locating part 32, because the second locating part 40 mainly plays its effect of installing of leading when bearing 7 is installed, namely, when bearing 7 is installed first the second locating part 40 is alignd with predetermined installation site, and then install.If the structure of the second locating part 40 is the same with the first locating part 32, does not so just have guiding installation and acted on.Meanwhile, the second locating part 40 also plays the effect stoping bearing 7 to move axially, and can not stop the rotation of bearing 7.But the structure of the second locating part 40 also can be set to identical with the first locating part 32.Although this second locating part 40 loses the effect that guiding is installed, bearing 7 simultaneously by spacing while of two the first locating parts 32 and second locating part 40, thus can further enhancing the steadiness of bearing 7.
Fig. 9 is the structural drawing of the framework of the embodiment of the present invention.
As shown in Figure 9, framework 3 comprises two bracket part.These two bracket part be positioned at framework 3 along fixing roller 5 both sides axially, structure is specular.Wherein, the bracket part being positioned at the drive end 27 of fixing roller 5, as drive end bracket part 6, is positioned at the bracket part of the driven end 28 of fixing roller 5 as driven end bracket part 19.
Drive end bracket part 6, for installing one of them end of bearing 7 and backer roll 4, has backer roll installation portion 20, axle bearing mount portion 22 and axial block piece 24.Direction in figure indicated by arrow is the sense of rotation of fixing roller 5.
The profile of backer roll installation portion 20 and the end of backer roll 4 match, for installing the end of backer roll 4.
Axle bearing mount portion 22 has the peristome 42 conformed to the profile of bearing 7, for installing bearing 7.The edge of peristome 42 is provided with two the first breach 33 and second breach 43.These two the first breach 33 are towards the radial opening of peristome 42.The line angulation at the center of two the first breach 33 and the center of peristome 42 is 120 °.The profile of each first breach 33 conforms to the profile of the first jut 17 of the first locating part 32, and therefore, when installing bearing 7, the first jut 17 of the first locating part 32 just in time can pass this first breach 33.Second breach 43 is also towards the radial opening of peristome 42, the profile of the second breach 43 is corresponding with the shape of the second locating part 40, and formed by the center of the center of the second breach 43 and the line at peristome 42 center and the first breach 33 and the line at peristome 42 center, angle is 120 °.
Axial block piece 24 is positioned at the edge of peristome 42, axially arranging, for stopping that bearing 7 moves axially towards the center of fixing roller 5 along fixing roller 5.In the present embodiment, axial block piece 24 is bending hook 24.The shape of this bending hook 24 is L shape, raised and to the axle bending of fixing roller 5 to fixing roller 5 center position from peristome 42 edge.The arm of bending hook 24 is fixed on the side at close fixing roller 5 center of peristome 42, and the hook portion of bending hook 24 is arranged towards the axis of fixing roller 5.The determined plane of hook portion of three bending hooks 24 is parallel with the determined plane of peristome 42.
Figure 10 is the structural drawing of the first locating part of the embodiment of the present invention.
As shown in Fig. 9,10, the spacing d of peristome 42 and axial block piece 24
2equal the thickness d of the first jut 17 of the first locating part 32
3, therefore, the first jut 17 can just in time embed in the cavity that peristome 42 and axial block piece 24 formed.The spacing d of peristome 42 and axial block piece 24
2also equal the thickness of the 3rd jut 41 of the second locating part 40, therefore, the 3rd jut 41 also can just in time embed in the space that peristome 42 and axial block piece 24 formed.Because the first jut 17 of bearing 7 and the 3rd jut 41 are by peristome 42 and axial block piece 24 regulation, so bearing 7 cannot moving axially along fixing roller 5.
Figure 11 is the bearing of the embodiment of the present invention and the installation assembly figure of framework.
Figure 12 is the side view of Figure 11.
As shown in Figure 11,12, the arrow of bearing 7 inside represents bearing 7 rotation direction when mounted, and the arrow of bearing 7 outside represents the rotation direction of fixing roller 5.When installing bearing 7, second locating part 40 is aimed at the second breach 43, then the first jut 17 of the first locating part 32 is first through the first breach 33, second locating part 40 is through the second breach 43 simultaneously, until the abutment end 30 of bearing 7 abuts against with bending hook 24, then the first jut 17 rotates towards the direction identical with the rotation direction of fixing roller 5 in the space that peristome 42 and axial block piece 24 are formed, first jut 17 and the first breach 33 are staggered a segment distance, simultaneously the 3rd jut 41 of the second locating part 40 and the second breach 43 also stagger a segment distance.Because the thickness d of the first jut 17
3equal the spacing d of peristome 42 and bending hook 24
2, so the first jut 17 is limited between the edge of the first breach 33 and bending hook 24 and cannot moves along the axis of fixing roller 5.
When installing bearing 7, the second jut 18 of the first locating part 32 of bearing 7 with the shape of the first breach 33 for tracks is rotated.When the first locating part 32 turn to its second jut 18 stopped by the edge part 25 of the first breach 33 time, bearing 7 just cannot be rotated further again.In the present embodiment, when installing bearing 7, bearing 7 is rotated towards the direction identical with the rotation direction of fixing roller 5.When the second jut 18 of the first locating part 32 is stopped by the edge part 25 of the first breach 33, bearing 7 just can not be rotated further along the direction identical with the rotation direction of fixing roller 5, thus prevents bearing 7 from rotating along with the rotation of fixing roller 5.
Figure 13 is the installation assembly figure of the fixing roller of the embodiment of the present invention, bearing and framework.
As shown in figure 13, the drive end 27 of fixing roller 5 is connected by driving ring 9 with drive member 8 through bearing 7, and bearing 7 is arranged in the axle bearing mount portion 22 of drive end bracket part 6.Abutment end 30 and the bending hook 24 of bearing 7 abut against, and non-abutment end 31 abuts against with the housing of drive member 8.First jut 17 of the first locating part 32 of bearing 7 and the edge of the first breach 33 abut against.Because bearing 7 is subject to the restriction at the edge of bending hook 24, housing and the first breach 33, can firmly be fixed in axle bearing mount portion 22, and moving axially not to fixing roller 5.
Figure 14 is the stereographic map of the drive end side cover of the embodiment of the present invention.
Figure 15 is the installation assembly schematic diagram of the drive end side cover of the embodiment of the present invention, drive member and bearing.
Figure 16 is that the A of Figure 15 is to schematic diagram.
As shown in Figure 14,15 and 16, the number of side cover is two, is respectively drive end side cover 11 and driven end side cover.Drive end side cover 11 is positioned near the drive end 27 of fixing roller 5, for installing drive member 8.Drive end side cover 11 is provided with the position blocking pin 26 conformed to the position of the second jut 18 of the first locating part 32.The side that this position blocking pin 26 contacts with the edge part 25 of the first breach 33 with the non-of the second jut 18 abuts against, and rotates along the direction contrary with sense of rotation when installing for stoping bearing 7.Arrow in Figure 15 and Figure 16 represents the sense of rotation of fixing roller 5, also represents bearing 7 sense of rotation when mounted simultaneously.In the present embodiment, because bearing 7 sense of rotation is when mounted consistent with the sense of rotation of fixing roller 5, so position blocking pin 26 also can stop bearing 7 to rotate along the direction contrary with the sense of rotation of fixing roller 5.
As shown in Figure 10, because the side of the second jut 18 of the first locating part 32 on bearing 7 is abutted by the position blocking pin 26 on drive end side cover 11, and the opposite side of this second jut 18 is abutted by the edge part 25 of the first breach 33, so bearing 7 is fastened between position blocking pin 26 and the edge part 25 of the first breach 33, both cannot rotate towards the direction identical with the sense of rotation of fixing roller 5, also cannot rotate towards the direction contrary with the sense of rotation of fixing roller.
To sum up, because the bearing 7 after installing can not move vertically, again can not rotary motion, it is hereby ensured that bearing 7 is unlikely in use and come off, be conducive to the stable operation of fixing roller 5, thus greatly reduce the out of order probability of fixing device 2.
Figure 17 is the stereographic map of the driven end of the fixing roller of the embodiment of the present invention.
Figure 18 is the front view of the driven end of the fixing roller of the embodiment of the present invention.
As shown in Figure 17,18, spacing ring 10 is positioned at the driven end 28 of fixing roller 5, its structure and material and driving ring 9 just the same, the two can be general.The bending part of spacing ring 10 is snapped in the second through hole 16 of the driven end 28 of fixing roller 5.Because spacing ring 10 and the common design of driving ring 9, so the quantity of the mould of part and finished parts can be reduced, thus reduce the production cost of fixing device 2, also can improve the packaging efficiency of part simultaneously.
Figure 19 is the structural representation of the driven end bracket part of the embodiment of the present invention.
As shown in figure 19, driven end bracket part 19 is positioned at the driven end 28 of fixing roller 5, and the structure of its structure and drive end bracket part 6 is specular, for installing the another one end of another one bearing 7 and backer roll 4.The direction of arrow in figure represents the rotation direction of fixing roller 5.
Figure 20 is the bearing of the embodiment of the present invention and the installation assembly schematic diagram of driven end bracket part.
Figure 21 is the side view of Figure 20.
As shown in Figure 20,21, bearing 7 is the same at the mounting means of drive end bracket part 6 with another one bearing 7 at the mounting means of driven end bracket part 19.The direction of arrow in figure represents bearing 7 rotation direction when mounted in the present embodiment.In the present embodiment, bearing 7 rotation direction is when mounted also consistent with the rotation direction of fixing roller 5, and the structure of the structure of driven end bracket part 19 and drive end bracket part 6 is specular, therefore, bearing 7 can be locked in driven end bracket part 19, can not rotate along the direction identical with the rotation direction of fixing roller 5, can not along the axially-movable of fixing roller 5.
Figure 22 is the installation assembly figure of the drive member of the embodiment of the present invention, bearing and fixing roller.
As shown in figure 22, the driven end 28 of fixing roller 5 runs through bearing 7.Bearing 7 is arranged in the peristome of the axle bearing mount portion of driven end bracket part 19, and its abutment end 30 abuts against with the bending hook of this peristome, and non-abutment end 31 abuts against with spacing ring 10.Because this bearing 7 receives the restriction of bending hook, spacing ring 10 and peristome self structure simultaneously, therefore can not moving axially to fixing roller 5.
Figure 23 is the stereographic map of the driven end side cover of the embodiment of the present invention.
Figure 24 is the front view of the driven end side cover of the embodiment of the present invention.
As shown in Figure 23,24, driven end side cover 12 is positioned near the driven end 28 of fixing roller 5, for installing the driven end 28 of fixing roller 5.Driven end side cover 12 is also provided with a blocking pin 39, the position of this blocking pin 39 on driven end side cover 12 and the position of position blocking pin 26 on drive end side cover 11 are specular, therefore, in the present embodiment, blocking pin 39 also can stop bearing 7 to rotate along the direction contrary with sense of rotation when installing.Arrow in figure represents the sense of rotation of fixing roller 5, also represents bearing 7 sense of rotation when mounted simultaneously.Therefore, blocking pin 39 also can stop bearing 7 to rotate along the direction contrary with the sense of rotation of fixing roller 5.
Figure 25 is the assembly drawing of the fixing device of the embodiment of the present invention.
As shown in figure 25, the drive end 27 of fixing roller 5, through one of them bearing 7, is locked together by driving ring 9 and drive member 8, and the driven end 28 of fixing roller 5 locks together through another one bearing 7 and spacing ring 10.Two bearings 7 are locked in drive end bracket part 6 and driven end bracket part 19 respectively.Be locked to bearing 7 in drive end bracket part 6 due to be subject to bending hook 24, housing, the first breach 33 edge limitation and cannot moving axially along fixing roller 5.Meanwhile, be subject to the edge part of the first breach 33 and the restriction of position blocking pin 26 due to this bearing 7 and cannot rotate.Because the structure of the structure of driven end bracket part 19 and drive end bracket part 6 is specular, so driven end bracket part 19 also can limit moving axially and rotating of the bearing 7 being positioned at this end.Because bearing 7 structure at fixing roller 5 two ends is just the same, common design can be realized, therefore, it is possible to reduce the processing mold quantity of parts, be conducive to reducing production cost.
The recording medium thing discharge that paper discharge unit 37 is formed for fixing device 2 being completed image, so that user reads, so far completes an image and forms action.
The effect of embodiment and effect:
According to fixing device and the image processing system of the present embodiment, because in this fixing device, the axial block piece being arranged on the peristome edge of axle bearing mount portion can stop that bearing moves axially, the side being arranged on first breach at this peristome edge contacts with the second jut, and then stop the rotation of bearing, so bearing can be firmly locked together in axle bearing mount portion, can not move axially, can not rotate, be conducive to fixing roller stably to be supported by bearing when rotating, thus avoid the final image formed that hangover or blooming occur.
In addition, because the bearing arrangement being positioned at fixing roller two ends is the same, so common design can be realized, not only reduce the quantity of processing mold, and improve packaging efficiency.
Claims (10)
1. a fixing device, is characterized in that, comprising:
Fixing roller, for being fixed on the toner picture be attached on recording medium thing described recording medium thing;
Two bearings, are arranged on the two ends of described fixing roller;
Framework, has two axle bearing mount portion, for installing described two bearings respectively,
Wherein, the outside surface of described bearing is provided with the first locating part that at least two have predetermined space, and described first locating part has: the circumferencial direction along described bearing extends and first jut at close described fixing roller center; And extend and the second jut of close described fixing roller end along the axis of described fixing roller,
Described axle bearing mount portion has the peristome conformed to the profile of described bearing, be arranged on described peristome edge and for stopping the axial block piece that described bearing moves axially, and first breach corresponding respectively with the shape of described first locating part, the edge of described first breach contacts with described second jut, for stopping the rotation of described bearing.
2. fixing device according to claim 1, is characterized in that:
Wherein, described first jut and described second jut form convex shape projection.
3. fixing device according to claim 2, is characterized in that:
Wherein, described first locating part is two, and formed by the center of two described first locating parts and the circle center line connecting of described bearing, angle is 120 °,
Described first breach is two, and formed by the center of two described first breach and the line at described peristome center, angle is 120 °.
4. fixing device according to claim 1, is characterized in that:
Wherein, the outside surface of described bearing is also provided with at least one second locating part, the circumferencial direction that described second locating part has along described bearing extends and the 3rd jut at close described fixing roller center, described 3rd protruding part is between two described first locating parts, there is the shape identical with described first jut
The edge of the described peristome of described axle bearing mount portion is also provided with second breach corresponding respectively with the shape of described second locating part.
5. fixing device according to claim 4, is characterized in that:
Wherein, described second locating part is one, and formed by the described center of the 3rd jut and the center of the circle center line connecting of described bearing and described first jut and the circle center line connecting of described bearing, angle is 120 °,
Described second breach is one, and formed by the center of the center of described second breach and the line at described peristome center and described first breach and the line at described peristome center, angle is 120 °.
6. fixing device according to claim 1, is characterized in that:
Wherein, described axial block piece is bending hook, and described bending hook profile is L shape, raised and towards the axle bending of described fixing roller to described fixing roller center position from described peristome edge.
7. fixing device according to claim 1, is characterized in that, also comprises:
Drive member, is connected with the drive end of described fixing roller, rotates for driving described fixing roller; And
Drive end side cover, for installing described drive member,
Wherein, described drive end side covers and is also provided with the position blocking pin corresponding with described second jut of described first locating part, contacts, for stopping rotating backward of described bearing with the side of the edge contact of non-and described first breach of described second jut.
8. fixing device according to claim 7, is characterized in that, also comprises:
Driven end side cover, for installing the driven end of described fixing roller,
Wherein, described driven end side cover being also provided with the blocking pin corresponding with described second jut of described first locating part, contacting with the side of the edge contact of non-and described first breach of described second jut, for stopping rotating backward of described bearing.
9. fixing device according to claim 8, is characterized in that, also comprises:
Spacing ring, is enclosed within the driven end of described fixing roller, abuts against with the side of the close described driven end of described bearing, for limiting moving axially of described bearing,
Wherein, described spacing ring has at least one bending part,
The driven end of described fixing roller is provided with the installation through hole that at least one and described bending part match, for installing described bending part.
10. an image processing system, is characterized in that, comprising:
Fixing device, for the toner picture be attached on recording medium thing being fixed on described recording medium thing,
Wherein, described fixing device is the described fixing device for any one record in claim 1 to claim 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310257724.XA CN104252123B (en) | 2013-06-25 | 2013-06-25 | Fixing device and image processing system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310257724.XA CN104252123B (en) | 2013-06-25 | 2013-06-25 | Fixing device and image processing system |
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| CN104252123A true CN104252123A (en) | 2014-12-31 |
| CN104252123B CN104252123B (en) | 2016-08-17 |
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| CN201310257724.XA Active CN104252123B (en) | 2013-06-25 | 2013-06-25 | Fixing device and image processing system |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2017072713A (en) * | 2015-10-07 | 2017-04-13 | 株式会社リコー | Fixing device and image forming apparatus |
| CN106873333A (en) * | 2015-12-14 | 2017-06-20 | 富士施乐株式会社 | Roller support meanss, conveyer, fixing device and image processing system |
| CN112415876A (en) * | 2020-12-01 | 2021-02-26 | 上海富士施乐有限公司 | Mounting structure of photographic fixing roller bearing |
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| JP2017072713A (en) * | 2015-10-07 | 2017-04-13 | 株式会社リコー | Fixing device and image forming apparatus |
| CN106873333A (en) * | 2015-12-14 | 2017-06-20 | 富士施乐株式会社 | Roller support meanss, conveyer, fixing device and image processing system |
| CN106873333B (en) * | 2015-12-14 | 2019-12-24 | 富士施乐株式会社 | Roller supporting device, conveying device, fixing device and image forming apparatus |
| CN112415876A (en) * | 2020-12-01 | 2021-02-26 | 上海富士施乐有限公司 | Mounting structure of photographic fixing roller bearing |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104252123B (en) | 2016-08-17 |
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