CN208994748U - The paper-rubbing mechanism of paper feed mechanism of printer - Google Patents
The paper-rubbing mechanism of paper feed mechanism of printer Download PDFInfo
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- CN208994748U CN208994748U CN201821403468.5U CN201821403468U CN208994748U CN 208994748 U CN208994748 U CN 208994748U CN 201821403468 U CN201821403468 U CN 201821403468U CN 208994748 U CN208994748 U CN 208994748U
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- pickup arm
- ratchet
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Abstract
The paper-rubbing mechanism of paper feed mechanism of printer, including pickup arm transmission mechanism, pickup arm front gear, two pickup arm middle gears, pickup arm transmission gear, pickup arm ratchet gear is arranged in its pickup arm side, it is rotatably connected on pickup arm, pickup arm front gear is engaged with a pickup arm middle gear, pickup arm middle gear is engaged with pickup arm transmission gear, pickup arm transmission gear is engaged with another pickup arm middle gear again, another pickup arm middle gear is engaged with pickup arm ratchet gear again, and pickup arm is rotatably connected in the framework of printer；Pickup arm ratchet gear one end passes through pickup arm and axial quil is arranged, and the other end is fixed on one end of pickup arm axle after putting on pickup arm ratchet gear spring；Support shaft of the pickup arm axle one end as pickup arm ratchet gear, and pickup arm axle axial direction quil is set, pickup arm ratchet gear axial direction quil meshes together with pickup arm axle axial direction quil, and axial compression；Paper-sheets rolling wheel, housing is on pickup arm axle.
Description
Technical field
The utility model relates to the paper-rubbing mechanisms of paper feed mechanism of printer.
Background technique
The paper-rubbing mechanism setting paper-sheets rolling wheel and intake roller of existing paper feed mechanism of printer, only rely on a motor and realize paper feed
Process；When rotating forward, paper-sheets rolling wheel and intake roller realize paper feed process jointly, when paper reaches paper feed roller center, sensor inspection
Motor starts to invert after measuring signal, to start text print procedure.Therefore, paper feeding mechanism needs to reach following effect:
It is existing cannot to successfully manage the motor overload generated when overload occurs in pickup for existing printer paper-rubbing mechanism
As.
Summary of the invention
Technical problem to be solved in the utility model is to overcome the above-mentioned insufficient of the prior art and provide a kind of printer
The paper-rubbing mechanism of paper feeding mechanism can be avoided the generation of motor overload phenomenon.
The technical scheme in the invention for solving the above technical problem are as follows:
The paper-rubbing mechanism of paper feed mechanism of printer, including
Pickup arm front gear, two pickup arm middle gears, the transmission of pickup arm is arranged in pickup arm transmission mechanism, pickup arm side
Gear, pickup arm ratchet gear, are rotatably connected on pickup arm, and pickup arm front gear is engaged with a pickup arm middle gear,
Pickup arm middle gear is engaged with pickup arm transmission gear, and pickup arm transmission gear is engaged with another pickup arm middle gear again, another
Pickup arm middle gear is engaged with pickup arm ratchet gear again, and pickup arm is rotatably connected in the framework of printer；
Pickup arm ratchet gear, one end pass through pickup arm and axial quil are arranged, and the other end puts on pickup arm ratchet gear
Spring is fixed on one end of pickup arm axle；
Pickup arm axle, support shaft of the one end as pickup arm ratchet gear, and the axis with pickup arm ratchet gear is set
To the matched pickup arm axle axial direction quil of quil, pickup arm ratchet gear axial direction quil and pickup arm axle axial direction quil are engaged on one
It rises, and the axial compression by the pressure of pickup arm ratchet gear spring；
Paper-sheets rolling wheel, housing are rubbed paper into the paper feeding mechanism of typewriting with the hands by the rotation of paper-sheets rolling wheel on pickup arm axle.
Preferably, to improve frictional force, paper preferably can be rubbed with the hands to arrive and beaten by the paper-sheets rolling wheel also housing pickup rubber wheel in this way
In the paper feeding mechanism of word.
Preferably, also set up pickup arm transmission gear spring between pickup arm transmission gear and pickup arm, pickup arm by
Axial spring force, can change the spatial position of pickup arm in this way.
The paper-rubbing mechanism of another paper feed mechanism of printer is additionally provided, including
Pickup arm front gear, two pickup arm middle gears, the transmission of pickup arm is arranged in pickup arm transmission mechanism, pickup arm side
Gear, pickup arm ratchet gear, are rotatably connected on pickup arm, and pickup arm front gear is engaged with a pickup arm middle gear,
Pickup arm middle gear is engaged with pickup arm transmission gear, and pickup arm transmission gear is engaged with another pickup arm middle gear again, another
Pickup arm middle gear is engaged with pickup arm ratchet gear again, and pickup arm is rotatably connected in the framework of printer；
Axial quil is arranged in pickup arm ratchet gear, one end, and the other end is fixed on one end of pickup arm axle；
Pickup arm ratchet, one end passes through pickup arm ratchet gear and the support shaft as pickup arm ratchet gear, in pickup
Pickup arm ratchet gear spring is also put on the outside of arm ratchet gear, is also set up matched with quil axial in pickup arm ratchet gear
Axial ratchet, under the action of the spring force of pickup arm ratchet gear spring, axial quil and axial ratchet mesh together and
It can rotate together；Pickup arm ratchet, the auxiliary section of the other end setting and pickup arm axle ratchet one end fits, the axis of pickup arm ratchet
Protruding circular ring is set on the outside of to ratchet, and protruding circular ring is connected on pickup arm, and by baffle axial limiting on pickup arm, baffle
It is fixed on pickup arm；
Pickup arm axle axial direction quil matched with the axial quil of pickup arm axle, the two is arranged in pickup arm axle ratchet, one end
It can mesh together；Auxiliary section is arranged in the pickup arm axle ratchet other end, and pickup arm ratchet auxiliary section and pickup arm axle ratchet are another
End auxiliary section is clutch；
Pickup arm axle, support shaft of the one end as pickup arm ratchet, pickup arm axle ratchet, and be arranged and match with axial quil
The pickup arm axle axial direction quil of set, pickup arm ratchet gear axial direction quil mesh together with pickup arm axle axial direction quil.
Preferably, also set up pickup arm transmission gear spring between pickup arm transmission gear and pickup arm, pickup arm by
Axial spring force, can change the spatial position of pickup arm in this way.
Preferably, the auxiliary section of the pickup arm ratchet is the arc-like sheet of one section of pickup arm ratchet outer circle circumferential direction, pickup
The auxiliary section of arm axle ratchet is the arc-like sheet of one section of pickup arm axle ratchet outer circle circumferential direction, and the axial length of arc-like sheet dual side-edge is not
Together, when short side resists pickup arm axle ratchet arc-like sheet a side, the axial quil of pickup arm axle ratchet and the axial direction of pickup arm axle
Quil meshes together；When long side resists another side of pickup arm axle ratchet arc-like sheet, pickup arm axle ratchet and pickup arm ratchet
Between generate axial gap, pickup arm axle ratchet can be separated with pickup arm ratchet under the action of low-force, such clutch
Mode is fairly simple.
Utility model has the advantages that due to being provided with axial spine between pickup arm transmission mechanism and pickup arm axle
Matching mechanism is pierced, therefore, when load is excessive, the generation pierced and avoid that motor overload phenomenon occurs can be jumped.
Detailed description of the invention
Fig. 1 is the decomposition diagram of the paper-rubbing mechanism of 1 paper feed mechanism of printer of the utility model embodiment.
Structure when Fig. 2 is the paper-rubbing mechanism normal pickup state of 1 paper feed mechanism of printer of the utility model embodiment is shown
It is intended to.
Fig. 3 is the structural schematic diagram when paper-rubbing mechanism load of 1 paper feed mechanism of printer of the utility model embodiment is excessive.
Fig. 4 is structural schematic diagram when the utility model embodiment 1 increases axle spring.
Fig. 5 is the decomposition diagram of the paper-rubbing mechanism of 2 paper feed mechanism of printer of the utility model embodiment.
Fig. 6 is the structural schematic diagram of the paper-rubbing mechanism of 2 paper feed mechanism of printer of the utility model embodiment.
Fig. 7 is the stereoscopic schematic diagram of the paper-rubbing mechanism of 2 paper feed mechanism of printer of the utility model embodiment.
Structure when Fig. 8 is the paper-rubbing mechanism normal pickup state of 2 paper feed mechanism of printer of the utility model embodiment
Schematic diagram.
Fig. 9 is the structural representation when paper-rubbing mechanism load of 2 paper feed mechanism of printer of the utility model embodiment is excessive
Figure.
Figure 10 is the structural schematic diagram of the paper-rubbing mechanism of 2 paper feed mechanism of printer of the utility model embodiment.
Figure 11 is paper-rubbing mechanism pickup arm axle ratchet and the pickup arm spine of 2 paper feed mechanism of printer of the utility model embodiment
Structural schematic diagram on wheel top.
Figure 12 is paper-rubbing mechanism pickup arm axle ratchet and the pickup arm spine of 2 paper feed mechanism of printer of the utility model embodiment
Take turns the structural schematic diagram left.
Figure 13 is that the paper-rubbing mechanism pickup arm axle ratchet of 2 paper feed mechanism of printer of the utility model embodiment leaves pickup arm
The structural schematic diagram of axis.
Figure 14 is the decomposition diagram of the paper-rubbing mechanism of 3 paper feed mechanism of printer of the utility model embodiment.
Specific embodiment
With reference to the accompanying drawing, the utility model is described in further detail for embodiment.
Embodiment 1
As shown in Figure 1, pickup arm component 6 includes pickup arm 21, pickup arm front gear 22, pickup arm middle gear 23, pickup
Arm transmission gear 24, pickup arm ratchet gear 25, pickup arm axle 28.
21 side of pickup arm is arranged 22, two pickup arm middle gears 23 of pickup arm front gear, pickup arm transmission gear 24, rubs with the hands
Paper arm ratchet gear 25, and be rotatably connected on pickup arm 21 by respective axis, pickup arm front gear 22 and a pickup arm
Middle gear 23 engages, and pickup arm middle gear 23 engages with pickup arm transmission gear 24, pickup arm transmission gear 24 again with another stranding
Paper arm middle gear 23 engages, and another pickup arm middle gear 23 is engaged with pickup arm ratchet gear 25 again, forms the transmission of pickup arm
Mechanism.
Pickup arm 21 passes through the connecting shaft 211 and 212(such as Fig. 2 at two ends) it is rotatably connected in the framework 7 of printer,
The spatial position of pickup arm 21 can be adjusted by aftermentioned mechanism in this way.
25 one end of pickup arm ratchet gear passes through pickup arm 21 and axial quil 251 is arranged, and the other end puts on pickup arm spine
Wheel gear spring 27, and by being fixed on the one of pickup arm axle 28 under 27 collective effect of screw 253 and pickup arm ratchet gear spring
On end 282.
Support shaft of 28 one end of pickup arm axle as pickup arm ratchet gear 25, and be arranged mating with axial quil 251
Pickup arm axle axial direction quil 281, pickup arm ratchet gear axial direction quil 251 and pickup arm axle axial direction quil 281 are engaged on one
Play, and the axial compression by pickup arm ratchet gear spring 27, under normal circumstances, pickup arm ratchet gear 25 and pickup arm axle
28 engagements can rotate together.
28 housing paper-sheets rolling wheel 29 of pickup arm axle can be rubbed paper into the paper feeding mechanism of typewriting with the hands by the rotation of paper-sheets rolling wheel 29.
To improve frictional force, paper-sheets rolling wheel 29 goes back housing pickup rubber wheel 30, in this way can preferably by paper rub with the hands to typewriting into
In mechanism of paper.
In the present embodiment, for the power and stability for improving pickup, the pickup rubber at two intervals are provided on paper-sheets rolling wheel 29
Wheel 30.
When normal pickup state, rotated by pickup arm front gear 22 through pickup arm middle gear 23, pickup arm driving cog
Wheel 24 rotates pickup arm ratchet gear 25, and pickup arm ratchet gear 25 meshes together with pickup arm axle 28 at this time, also together
It rotates and paper-sheets rolling wheel 29 and pickup rubber wheel 30 is driven to rotate, normal paper feeding is shown in Fig. 2.
When stress is excessive, the quil 281 of the quil 251 of pickup arm ratchet gear 25 and pickup arm axle 28 skid and cannot
It transmits power and sees Fig. 3 to prevent gear train assembly load excessive.
Pickup arm transmission gear spring 26, pickup arm driving cog are also set up between pickup arm transmission gear 24 and pickup arm 21
For wheel 24 by 253 axial limiting of screw on pickup arm 21, pickup arm 21 is shown in Fig. 4 by axial spring force F1.
When pickup arm 24 pivoting movement of transmission gear, the also relative rotation of pickup arm transmission gear spring 26, and to stranding
The torque of the application of paper arm 21 direction of rotation；Since pickup arm 21 is fixed in framework 7 by hole axle cooperation, the movement of pickup arm 21
It can only be around the center axis rotation of pickup arm front gear 22, so that pickup arm 21 carries out rotation fortune around its fulcrum for being fixed on framework 7
Spatial position that is dynamic and changing pickup arm 21, therefore, setting pickup arm transmission gear spring 26 can change the sky of pickup arm 21
Between position.
Embodiment 2
As shown in Fig. 5,6,7, embodiment 2 is to increase pickup arm ratchet 31, pickup arm axle ratchet on that basis of example 1
32, baffle 33.
21 side of pickup arm is arranged 22, two pickup arm middle gears 23 of pickup arm front gear, pickup arm transmission gear 24, rubs with the hands
Paper arm ratchet gear 25, and be rotatably connected on pickup arm 21 by respective axis, pickup arm front gear 22 and a pickup arm
Middle gear 23 engages, and pickup arm middle gear 23 engages with pickup arm transmission gear 24, pickup arm transmission gear 24 again with another stranding
Paper arm middle gear 23 engages, and another pickup arm middle gear 23 is engaged with pickup arm ratchet gear 25 again, forms the transmission of pickup arm
Mechanism.
Axial quil 251 is arranged in 25 one end of pickup arm ratchet gear, and the other end is by screw 253 and pickup arm ratchet gear bullet
It is fixed under 27 collective effect of spring on one end 312 of pickup arm ratchet 31.
31 one end 312 of pickup arm ratchet passes through pickup arm ratchet gear 25 and the support as pickup arm ratchet gear 25
Axis also covers upper pickup arm ratchet gear spring 27 in 25 outside of pickup arm ratchet gear, also sets up matched with axial quil 251
Axial ratchet 311, in this way under the action of pickup arm ratchet gear 27 spring force of spring, axial quil 251 and axial ratchet 311
Mesh together and can rotate together.
The auxiliary section 313 of 31 other end of pickup arm ratchet setting and 32 one end fits of pickup arm axle ratchet, the present embodiment
Auxiliary section 313 is the arc-like sheet of one section of 31 outer circle circumferential direction of pickup arm ratchet.
Protruding circular ring 314 is set on the outside of the axial ratchet 311 of pickup arm ratchet 31, and protruding circular ring 314 is connected to pickup arm
On 21, and protruding circular ring 314 is pressed on pickup arm 21 by the side of baffle 33 331, to carry out the side X to pickup arm ratchet 31
To limit, baffle 33 is fixed on pickup arm 21 by its another side 332 by screw 314.
Pickup arm axle axial direction spine matched with the axial quil 281 of pickup arm axle 28 is arranged in pickup arm axle ratchet one end 322
Thorn 322, the two can mesh together.
Auxiliary section 321 is arranged in 32 other end of pickup arm axle ratchet, and the auxiliary section 321 of the present embodiment is one section of pickup arm axle spine
The arc-like sheet of 321 outer circle circumferential directions is taken turns, the axial length of dual side-edge 3211,3212 is different, and short side 3211 resists arc-like sheet 313
When a side, the axial quil 322 of pickup arm axle ratchet 32 meshes together with the axial quil 281 of pickup arm axle 28, sees figure
8；When long side 3212 resists 313 another side of arc-like sheet, then since the axial length of 313 dual side-edge of arc-like sheet is identical, pickup arm
Axial (X-direction) gap H is generated between axis ratchet 32 and pickup arm ratchet 31, sees Figure 10,12, therefore, pickup arm axle ratchet 32
Can be mobile along axial direction (X-direction), so that the axial quil 322 of pickup arm axle ratchet 32 be made to leave pickup arm axle axial direction quil
281, see Figure 10,13, thus make paper-sheets rolling wheel 29, pickup rubber wheel 30, pickup arm axle 28 relative to pickup transmission mechanism freedom
Rotation.
Support shaft of 28 one end of pickup arm axle as pickup arm ratchet 31, pickup arm axle ratchet 32, and be arranged and axial direction
The matched pickup arm axle axial direction quil 281 of quil 322, axial quil 322 mesh together with pickup arm axle axial direction quil 281.
When normal pickup state, rotated by pickup arm front gear 22 through pickup arm middle gear 23, pickup arm driving cog
Wheel 24 rotates pickup arm ratchet gear 25, and pickup arm ratchet gear 25 passes through pickup arm ratchet 31, pickup arm axle ratchet at this time
32 engage with pickup arm axle 281 and rotate together, and drive paper-sheets rolling wheel 29 and pickup rubber wheel 30 to rotate, normal paper feeding is shown in Fig. 8.
When stress is excessive, the axial quil 251 of pickup arm ratchet gear 25 and the axial ratchet 311 of pickup arm ratchet 31
It skids and power cannot be transmitted, prevent gear train assembly load excessive, see Fig. 9.
Pickup arm transmission gear spring 26, pickup arm driving cog are also set up between pickup arm transmission gear 24 and pickup arm 21
Wheel 24 is by 253 axial limiting of screw on pickup arm 21, and pickup arm 21 is by axial spring force F1.
When pickup arm 24 pivoting movement of transmission gear, the also relative rotation of pickup arm transmission gear spring 26, and to stranding
The torque of the application of paper arm 21 direction of rotation；Since pickup arm 21 is fixed in framework 7 by hole axle cooperation, the movement of pickup arm 21
It can only be around the center axis rotation of pickup arm front gear 22, so that pickup arm 21 carries out rotation fortune around its fulcrum for being fixed on framework 7
Spatial position that is dynamic and changing pickup arm 21, therefore, setting pickup arm transmission gear spring 26 can change the sky of pickup arm 21
Between position.
Paper-sheets rolling wheel 29 when embodiment 2 is by increasing pickup arm ratchet 31, pickup arm axle ratchet 32, baffle 33 make printing,
Pickup rubber wheel 30, pickup arm axle 28 form a whole to be freely rotated relative to pickup transmission mechanism, is printed to reduce
Pickup rubber wheel realizes optimization to pickup system to the resistance of more pieces of paper in journey.
Embodiment 3
As shown in figure 14, reduce pickup arm transmission gear spring 26 than embodiment 2, with pickup arm ratchet gear spring 27
Its effect is substituted, the regulation of power and its power that pickup arm component is swung is more slightly worse than embodiment 2.
Claims (8)
1. the paper-rubbing mechanism of paper feed mechanism of printer, it is characterised in that: include:
Pickup arm front gear, two pickup arm middle gears, pickup arm driving cog is arranged in pickup arm transmission mechanism, pickup arm side
Wheel, pickup arm ratchet gear, are rotatably connected on pickup arm, and pickup arm front gear is engaged with a pickup arm middle gear, rub with the hands
Paper arm middle gear is engaged with pickup arm transmission gear, and pickup arm transmission gear is engaged with another pickup arm middle gear again, another stranding
Paper arm middle gear is engaged with pickup arm ratchet gear again, and pickup arm is rotatably connected in the framework of printer；
Pickup arm ratchet gear, one end pass through pickup arm and axial quil are arranged, and the other end puts on pickup arm ratchet gear spring,
It is fixed on one end of pickup arm axle；
Pickup arm axle, support shaft of the one end as pickup arm ratchet gear, and pickup arm axle matched with axial quil is set
Axial quil, pickup arm ratchet gear axial direction quil mesh together with pickup arm axle axial direction quil, and by pickup arm ratchet
Gear spring and axial compression；
Paper-sheets rolling wheel, housing are rubbed paper into the paper feeding mechanism of typewriting with the hands by the rotation of paper-sheets rolling wheel on pickup arm axle.
2. the paper-rubbing mechanism of paper feed mechanism of printer according to claim 1, it is characterised in that: the pickup arm driving cog
Pickup arm transmission gear spring is also set up between wheel and pickup arm.
3. the paper-rubbing mechanism of paper feed mechanism of printer according to claim 1 or 2, it is characterised in that: the paper-sheets rolling wheel is also
Housing pickup rubber wheel.
4. the paper-rubbing mechanism of paper feed mechanism of printer, it is characterised in that: including
Pickup arm front gear, two pickup arm middle gears, pickup arm driving cog is arranged in pickup arm transmission mechanism, pickup arm side
Wheel, pickup arm ratchet gear, are rotatably connected on pickup arm, and pickup arm front gear is engaged with a pickup arm middle gear, rub with the hands
Paper arm middle gear is engaged with pickup arm transmission gear, and pickup arm transmission gear is engaged with another pickup arm middle gear again, another stranding
Paper arm middle gear is engaged with pickup arm ratchet gear again, and pickup arm is rotatably connected in the framework of printer；
Axial quil is arranged in pickup arm ratchet gear, one end, and the other end is fixed on one end of pickup arm axle；
Pickup arm ratchet, one end passes through pickup arm ratchet gear and the support shaft as pickup arm ratchet gear, in pickup arm spine
Pickup arm ratchet gear spring is also put on the outside of wheel gear, also sets up axial direction matched with quil axial in pickup arm ratchet gear
Ratchet, axial quil mesh together with axial ratchet, the setting of the pickup arm ratchet other end and pickup arm axle ratchet one end fits
Pickup arm ratchet auxiliary section, protruding circular ring is set on the outside of the axial ratchet of pickup arm ratchet, protruding circular ring is connected to pickup arm
Above and by baffle axial limiting on pickup arm, baffle is fixed on pickup arm；
Pickup arm axle ratchet axial direction quil matched with the axial quil of pickup arm axle, the two is arranged in pickup arm axle ratchet, one end
It can mesh together, auxiliary section is arranged in the pickup arm axle ratchet other end, and pickup arm ratchet auxiliary section and pickup arm axle ratchet are another
End auxiliary section is clutch；
Pickup arm axle, support shaft of the one end as pickup arm ratchet, pickup arm axle ratchet, and be arranged matched with axial quil
Pickup arm axle axial direction quil, pickup arm ratchet gear axial direction quil mesh together with pickup arm axle axial direction quil.
5. the paper-rubbing mechanism of paper feed mechanism of printer according to claim 4, it is characterised in that: the pickup arm ratchet
Auxiliary section is the arc-like sheet of one section of pickup arm ratchet outer circle circumferential direction, and the auxiliary section of pickup arm axle ratchet is one section of pickup arm axle spine
The arc-like sheet of outer circle circumferential direction is taken turns, the axial length of arc-like sheet dual side-edge is different, and short side resists pickup arm axle ratchet arc-like sheet one
When side, the axial quil of pickup arm axle ratchet meshes together with the axial quil of pickup arm axle；Long side resists pickup arm axle
When another side of ratchet arc-like sheet, axial gap is generated between pickup arm axle ratchet and pickup arm ratchet.
6. the paper-rubbing mechanism of paper feed mechanism of printer according to claim 4 or 5, it is characterised in that: the pickup arm passes
Pickup arm transmission gear spring is set between moving gear and pickup arm.
7. the paper-rubbing mechanism of paper feed mechanism of printer according to claim 4 or 5, it is characterised in that: outside the paper-sheets rolling wheel
Cover pickup rubber wheel.
8. the paper-rubbing mechanism of paper feed mechanism of printer according to claim 6, it is characterised in that: the paper-sheets rolling wheel housing is rubbed with the hands
Paper rubber wheel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821403468.5U CN208994748U (en) | 2018-08-29 | 2018-08-29 | The paper-rubbing mechanism of paper feed mechanism of printer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821403468.5U CN208994748U (en) | 2018-08-29 | 2018-08-29 | The paper-rubbing mechanism of paper feed mechanism of printer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208994748U true CN208994748U (en) | 2019-06-18 |
Family
ID=66799074
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821403468.5U Active CN208994748U (en) | 2018-08-29 | 2018-08-29 | The paper-rubbing mechanism of paper feed mechanism of printer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208994748U (en) |
-
2018
- 2018-08-29 CN CN201821403468.5U patent/CN208994748U/en active Active
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