Paper supply device for receipt scanner

Abstract

The utility model relates to the technical field of scanners, in particular to a paper supply device for a document scanner, which comprises a scanner main body and a guide plate arranged at a paper inlet at the top of the scanner main body, a pickup roller assembly is arranged at the paper inlet at the inner top of the scanner main body, and the pickup roller assembly comprises a support and a pickup roller. The support is detachably connected with the pickup roller through a connecting structure. The end face of the guide plate is provided with a guide structure, the guide structure is matched with the pickup roller to guide and convey paper, the pickup roller can be detached by unlocking an elastic buckle and a pair of connecting pieces, and the situation that when the pickup roller is damaged, the pickup roller is difficult to detach from a wheel shaft, and normal use of the scanner is affected is prevented. And the horizontal position of the guide piece can be adjusted, the guide piece is matched with the side edge of the guide plate to guide the paper, and paper of different sizes can be better matched through adjustment.

Description

Technical Field

[0001] This utility model relates to the field of scanner technology, and in particular to a paper supply device for a document scanner. Background Technology

[0002] A document scanner, also known as a barcode scanner, is a device used to read the information contained in a barcode. By using a paper feeding device, it can feed documents to the scanner body, thereby improving scanning efficiency.

[0003] Paper feeding devices typically transport paper by driving paper feed rollers to rotate. For example, the prior art Chinese patent announcement number "CN106019884A" discloses a paper feeding device, a manuscript transport device, and an image forming device. The paper feeding device of the present invention includes: a sheet body carrying portion; a sheet body conveying channel extending from the sheet body carrying portion; a paper feeding roller disposed on the sheet body conveying channel for conveying a sheet body, having a rotatable circumferential surface; a paper feeding pad disposed opposite to the circumferential surface of the paper feeding roller, having a padding surface, and a slit portion formed between the padding surface and the circumferential surface for the sheet body to enter; a support member having a support surface for fixing the paper feeding pad and an abutment surface, the abutment surface being located upstream of the support surface in the sheet body conveying direction, positioned above the padding surface, and abutting the front end of the sheet body fed from the sheet body carrying portion; and a rib disposed on the support member, disposed at both ends of the support surface in the sheet body width direction intersecting the sheet body conveying direction, having an inclined surface extending downward from the abutment surface in the downstream side of the sheet body conveying direction.

[0004] In practice, the paper feed rollers are not easy to disassemble. If the paper feed rollers or the paper feed sleeves are damaged, it is difficult to remove the paper feed rollers from the axle. Furthermore, the manual control panel is equipped with guides to guide the paper, but it is unclear how to adjust the position of the guides, making it inconvenient to adapt to documents of different sizes. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies, such as the difficulty in disassembling the paper feed rollers and the unclear position adjustment of the guide components, and to propose a paper supply device for a document scanner.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] Design a paper supply device for a document scanner, including a scanner body and a guide plate disposed at the paper inlet on the top of the scanner body. The paper feed roller assembly is disposed at the paper inlet on the inner top of the scanner body. The paper feed roller assembly includes a bracket and a paper feed roller. The bracket and the paper feed roller are detachably connected by a connecting structure.

[0008] The guide plate has a guide structure on its end face, and the guide structure works with the paper feed roller to guide and transport the paper.

[0009] Furthermore, a driving component is provided inside the bracket. The driving component works with the transmission component to drive the wheel axle to rotate. The wheel axle is rotatably connected to the bottom of the bracket, and the transmission component and the paper feeding roller are provided around the wheel axle through a limiting part.

[0010] Furthermore, the connection structure includes a connector, which is cylindrical and divided into two halves along the centerline. The connector extends inward at the side through hole to form a snap-fit ​​portion, and a pair of the connectors snap-fit ​​with the annular groove at the end of the wheel axle through the snap-fit ​​portion.

[0011] Furthermore, it also includes an elastic buckle and a baffle. A pair of the snap-fit ​​portions are provided with corresponding recesses on their periphery. The elastic buckle has an opening and is fitted into the recess through the opening.

[0012] The baffle is fixedly connected to the other end of the wheel axle, and the baffle and the connecting member respectively abut against the two side walls of the bracket.

[0013] Furthermore, the guiding structure includes a guide groove, the two sides of the guide plate are bent upwards, and a guide member is slidably connected to the top of the guide plate through the guide groove. The guide member cooperates with the side of the guide plate to guide the paper.

[0014] Furthermore, the bottom end of the guide member is provided with a pair of elastic parts, and a deformation groove is provided between the pair of elastic parts. The side of the guide groove is provided with a plurality of slots along the length direction, and the pair of elastic parts engage with the slots.

[0015] The paper supply device for a document scanner proposed in this utility model has the following advantages: This utility model can feed paper one by one through the paper feed roller assembly, sensor unit and guide structure. After long-term use, the paper feed roller can be disassembled by unlocking the elastic buckle and a pair of connecting parts, which prevents the paper feed roller from being difficult to remove from the wheel axle when it is damaged, thus affecting the normal use of the scanner. Furthermore, the horizontal position of the guide can be adjusted by squeezing a pair of elastic parts to make them retract and disengage from the slot. The guide, together with the side of the guide plate, guides the paper, and the adjustment can better adapt to paper of different sizes. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2This is a schematic diagram of the paper feed roller assembly of this utility model;

[0018] Figure 3 for Figure 2 A magnified structural diagram of area A;

[0019] Figure 4 for Figure 3 A schematic diagram of the enlarged structure of region B;

[0020] Figure 5 This is a schematic diagram of the guiding structure of this utility model;

[0021] Figure 6 for Figure 5 A magnified structural diagram of region C.

[0022] In the diagram: 1. Scanner body; 2. Guide plate; 3. Paper feed roller assembly; 31. Support; 32. Paper feed roller; 33. Drive component; 34. Transmission component; 35. Axle; 4. Connecting structure; 41. Connector; 411. Ring groove; 42. Snap-fit ​​part; 421. Recessed part; 43. Elastic buckle; 44. Baffle; 5. Guide structure; 51. Guide groove; 52. Guide component; 53. Elastic part; 54. Deformation groove; 55. Slot; 6. Swinging component. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0024] Reference Figure 1-6 A paper supply device for a document scanner includes a scanner body 1 and a guide plate 2 disposed at the paper inlet at the top of the scanner body 1. A paper feed roller assembly 3 is provided at the paper inlet at the inner top of the scanner body 1. The paper feed roller assembly 3 includes a bracket 31 and a paper feed roller 32.

[0025] The bracket 31 drives the paper feed roller 32 to abut against the paper through the swing component 6, and the bracket 31 and the paper feed roller 32 are detachably connected by the connecting structure 4.

[0026] The guide plate 2 is provided with a guide structure 5 on its end face. The guide structure 5 works with the paper feeding roller 32 to guide and transport the paper.

[0027] In some embodiments, the swinging component 6 causes the paper feed roller 32 to intermittently contact the paper by swinging the drive bracket 31, and the paper feed roller 32 conveys the paper under the action of the drive component 33 after contacting the paper. Of course, the swinging component 6 can also be a lifting component.

[0028] Specifically, the paper feed roller assembly 3 will also be used in conjunction with the sensing unit to further improve the accuracy of paper feeding and paper conveying detection.

[0029] Furthermore, a driving component 33 is provided inside the bracket 31. The driving component 33, in conjunction with the transmission component 34, drives the axle 35 to rotate. The axle 35 is rotatably connected to the bottom of the bracket 31, and the transmission component 34 and the paper feed roller 32 are provided around the axle 35 through a limiting part.

[0030] It should be added that the bottom of the bracket 31 has a U-shaped structure, the driving component 33 is a motor, the transmission component 34 is a transmission gear, and the motor and the shaft end of the wheel axle 35 are both equipped with transmission gears, and the corresponding transmission gears mesh and rotate.

[0031] The limiting part includes a limiting groove and a limiting block. The limiting block is provided at the end of the wheel axle 35, and the limiting groove is provided at the central through hole of the transmission member 34 and the paper feeding wheel 32. The limiting groove is slidably connected to the limiting block to circumferentially limit the transmission member 34 and the paper feeding wheel 32.

[0032] Furthermore, the connecting structure 4 includes a connector 41, which is cylindrical and divided into two halves along the center line. The connector 41 extends inward at the side through hole to form a snap-fit ​​part 42. A pair of connectors 41 are snapped into the annular groove 411 at the end of the wheel axle 35 through the snap-fit ​​part 42.

[0033] More specifically, it also includes an elastic buckle 43 and a baffle 44. A pair of snap-fit ​​portions 42 are provided with corresponding recesses 421 on their periphery. The elastic buckle 43 has an opening and is fitted into the recesses 421 through the opening.

[0034] The baffle 44 is fixedly connected to the other end of the axle 35, and the baffle 44 and the connector 41 respectively abut against the two side walls of the bracket 31.

[0035] In this embodiment, both the elastic buckle 43 and the elastic part 53 are preferably made of materials with deformation capabilities such as silicone or plastic;

[0036] The elastic buckle 43 is fitted into the recess 421 through the opening. Because a pair of connectors 41 are engaged with the annular groove 411 through the snap-fit ​​part 42, the elastic buckle 43 closes and fixes the pair of connectors 41. Then, the connectors 41, together with the baffle 44, can fix the paper feed roller 32.

[0037] In general, the guide structure 5 includes a guide groove 51, the two sides of the guide plate 2 are bent upwards, and a guide member 52 is slidably connected to the top of the guide plate 2 through the guide groove 51. The guide member 52 cooperates with the side of the guide plate 2 to guide the paper.

[0038] Finally, the bottom end of the guide member 52 is provided with a pair of elastic parts 53, and a deformation groove 54 is provided between the pair of elastic parts 53. The side of the guide groove 51 is provided with a plurality of slots 55 along the length direction, and the pair of elastic parts 53 engage with the slots 55.

[0039] Working method: During operation, the position of the guide 52 is adjusted according to the actual size of the document to be scanned. At the same time, a pair of elastic parts 53 are pressed. The pair of elastic parts 53 retract and disengage from the slot 55, so that the guide 52 can slide. When the pair of elastic parts 53 recover their deformation and engage with the corresponding slot 55, the guide 52 is fixed.

[0040] The document is placed on the end face of the guide plate 2. The bracket drives the paper feed roller 32 to intermittently contact the paper under the drive of the swing component 6. The paper feed roller 32 conveys the paper under the drive of the drive component 33 and the transmission component 34.

[0041] After prolonged use, the paper feed rollers can be disassembled by unlocking the elastic buckle and a pair of connectors.

[0042] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A paper supply device for a document scanner, comprising a scanner body (1) and a guide plate (2) arranged at the top paper inlet of the scanner body (1), characterized in that: The scanner body (1) is provided with a paper winding wheel assembly (3) at the inner top paper inlet, the paper winding wheel assembly (3) comprises a support (31) and a paper winding wheel (32), and the support (31) and the paper winding wheel (32) are detachably connected through a connecting structure (4); The guide plate (2) is provided with a guide structure (5) at the end face, and the guide structure (5) cooperates with the paper winding wheel (32) to guide and convey the paper.

2. A paper supply apparatus for a document scanner according to claim 1, characterized by: The support (31) is further provided with a driving member (33) inside, the driving member (33) drives a wheel shaft (35) to rotate through a transmission member (34), the wheel shaft (35) is rotatably connected to the bottom of the support (31), and the transmission member (34) and the paper winding wheel (32) are arranged on the periphery of the wheel shaft (35) through a limiting portion.

3. A paper supply for a document scanner according to claim 2, characterized in that: The connecting structure (4) comprises a connecting piece (41), the connecting piece (41) is in a cylindrical structure, is arranged in half along the center line, and extends inwardly at the side through hole to form a clamping portion (42), and a pair of the connecting pieces (41) are clamped with the ring groove (411) at the end of the wheel shaft (35) through the clamping portion (42).

4. A paper supply for a document scanner according to claim 3, characterized in that: Further comprising an elastic buckle (43) and a baffle (44), a pair of the clamping portions (42) are provided with corresponding recesses (421) on the periphery, the elastic buckle (43) has an opening, and is sleeved in the recess (421) through the opening; The baffle (44) is fixedly connected to the other end of the wheel shaft (35), and the baffle (44) and the connecting piece (41) abut against the two side walls of the support (31) respectively.

5. The paper supply apparatus for a document scanner according to claim 1, wherein: The guide structure (5) comprises a guide groove (51), the two sides of the guide plate (2) are arranged upwardly bent, and a guide member (52) is slidably connected to the top of the guide plate (2) through the guide groove (51), and the guide member (52) cooperates with the side of the guide plate (2) to guide the paper.

6. A paper supply for a document scanner according to claim 5, characterized in that: The bottom end of the guide member (52) is provided with a pair of elastic portions (53), and a deformation groove (54) is further arranged between the pair of elastic portions (53), wherein a plurality of clamping grooves (55) are arranged on the side of the guide groove (51) along the length direction, and a pair of the elastic portions (53) are clamped with the clamping grooves (55).

Images