Document scanning structure of scanner

Abstract

The utility model provides a document scanning structure of a scanner, which relates to the field of scanners and comprises a frame, a light-transmitting plate combined with the frame and conveying structures positioned on two sides of the light-transmitting plate and used for rolling contact with paper documents. The light-transmitting plate is arranged in a moving path of the paper document; the light-transmitting plate is provided with a first scanning part and a second scanning part, and the first scanning part and the second scanning part scan the front face and the back face of the paper document when the paper document moves relative to the light-transmitting plate. The first scanning part and the second scanning part which are located on the upper side and the lower side of the light-transmitting plate can shoot the front face and the back face of the document at the same time; two pictures are obtained at the same time, information scanning is carried out at the same time, and the scanning efficiency of paper documents is improved.

Description

Technical Field

[0001] The utility model relates to the field of scanners, in particular to a document scanning structure of a scanner. Background Art

[0002] The scanner can scan paper documents with high quality, but for paper documents with content on both sides, the scanning process needs to be repeated twice, and the scanning efficiency is low. It is necessary to make targeted improvements. Utility Model Content

[0003] The utility model aims to provide a scanner document scanning structure to solve the technical problem that a paper document with content on both sides needs to be scanned twice.

[0004] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0005] A scanner document scanning structure comprises a frame, a light-transmitting plate combined with the frame, and a transmission structure located on both sides of the light-transmitting plate for rolling contact with a paper document;

[0006] The light-transmitting plate is within the moving path of the paper document;

[0007] The light-transmitting plate is provided with a first scanning unit and a second scanning unit. When the paper document moves relative to the light-transmitting plate, the first scanning unit and the second scanning unit scan the front and back sides of the paper document.

[0008] Preferably, it further comprises a limiting structure, which adjusts the contact range between the conveying structure and the paper document so that the angle between the paper document and the conveying structure is always maintained at 90°.

[0009] Preferably, the limiting structure includes two cross bars fixed in the frame, and limiting blocks slidably matched with the two cross bars; the two limiting blocks span the light-transmitting plate; the area formed between the two limiting blocks is a moving area that keeps the angle between the paper document and the conveying structure always at 90°.

[0010] Preferably, the paper document is in rolling contact with at least one conveying structure within the range where the light-transmitting plate is located.

[0011] Preferably, the two conveying structures have the same conveying direction and are in transmission coordination, and further include a driving unit that outputs kinetic energy to any one of the conveying structures.

[0012] Preferably, the distances between the first scanning unit and the second scanning unit and the light-transmitting plate are adjustable.

[0013] The beneficial effects of the utility model are:

[0014] In the utility model, the first scanning unit and the second scanning unit located on the upper and lower sides of the light-transmitting plate can simultaneously photograph the front and back sides of the document, obtain two pictures at the same time, and perform information scanning at the same time, thereby improving the scanning efficiency of paper documents. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A schematic diagram of a scanner document scanning structure;

[0016] Figure 2 for Figure 1 The schematic diagram of the structure of the document scanning structure shown is after the light-transmitting plate is removed;

[0017] Figure 3 for Figure 1 The schematic diagram of the structure of the document scanning structure after the limit structure is installed;

[0018] Figure numerals: 1. first plate; 2. first plate extension; 3. second plate; 4. light-transmitting plate; 5. first roller; 6. second roller; 7. motor; 8. first scanning unit; 9. second scanning unit; 10. first wheel; 11. second wheel; 12. roller extension; 13. first transmission belt; 14. third wheel; 15. second transmission belt; 16. fourth wheel; 17. cross bar; 18. limit block. DETAILED DESCRIPTION

[0019] In order to make the technical means, creative features, objectives and effects of the present invention easy to understand, the present invention is further described below in conjunction with specific embodiments and drawings, but the following embodiments are only preferred embodiments of the present invention, not all. Based on the embodiments in the implementation mode, other embodiments obtained by those skilled in the art without creative work are all within the protection scope of the present invention.

[0020] The specific embodiments of the present utility model are described below in conjunction with the accompanying drawings.

[0021] Example 1

[0022] In this embodiment, a scanner document scanning structure is proposed, see Figure 1-Figure 3 The document scanning structure of the scanner includes a frame, a light-transmitting plate 4 combined with the frame, and a transmission structure located on both sides of the light-transmitting plate 4 for rolling contact with the paper document.

[0023] See also Figure 1 and Figure 2 The frame includes a first plate 1 and a second plate 3 adjacent to the first plate 1 . In addition, the first plate 1 has a first plate extension portion 2 , which is a fixing portion of the motor 7 .

[0024] Please continue reading Figure 1 and Figure 2 The conveying structure is a roller connecting the first plate 1 and the second plate 3. Specifically, the rollers are the first roller 5 and the second roller 6 on both sides of the light-transmitting plate 4, wherein the ends of the first roller 5 and the second roller 6 pass through the first plate 1 and the second plate 3, and are rotatably matched with the first plate 1 and the second plate 3 by means of bearings.

[0025] Further explanation, such as Figure 2 As shown, the first roller 5 has two third wheels 14, and the second roller 6 has two fourth wheels 16, wherein the third wheel 14 and its adjacent fourth wheel 16 are connected by a second transmission belt 15. After the connection, as long as any one of the first roller 5 and the second roller 6 rotates, the first roller 5 and the second roller 6 will rotate together, and the rotation directions are consistent.

[0026] To further explain, the conveying structure is in rolling contact with the paper document, and the light-transmitting plate 4 is within the moving path of the paper document. Therefore, the highest point of the roller surface of the first roller 5 and the second roller 6 should be flush with the highest point of the light-transmitting plate 4. This arrangement is beneficial for the paper document above the light-transmitting plate 4 to make smooth contact with the first roller 5 and the second roller 6, and can prevent the paper document from not contacting the first roller 5 and the second roller 6, or the paper document from being stuck between the first roller 5 and the second roller 6.

[0027] See also Figure 1 and Figure 2 The first roller 5 has a roller extension portion 12 extending outward through the first plate 1, and the transmission shaft of the motor 7 passes through the first plate extension portion 2 and extends outward. Specifically, the roller extension portion 12 is equipped with a first wheel 10, and the portion of the transmission shaft extending outward relative to the first plate extension portion 2 is equipped with a second wheel 11. A first transmission belt 13 is also provided, and the first transmission belt 13 connects the first wheel 10 and the second wheel 11 to transmit the first roller 5 and the second roller 6.

[0028] See also Figure 1 and Figure 2 The light-transmitting plate 4 has a first scanning unit 8 and a second scanning unit 9. When the paper document moves relative to the light-transmitting plate 4, the first scanning unit 8 and the second scanning unit 9 scan the front and back sides of the paper document.

[0029] See also Figure 3 This embodiment constrains the movement of the paper document, that is, the paper document preferably maintains an angle of 90° with the first roller 5 and the second roller 6. For this purpose, two cross bars 17 are arranged between the first plate 1 and the second plate 3, and two limit blocks 18 are also arranged, wherein the two limit plates 18 span the light-transmitting plate 4, and the ends of the limit blocks 18 are slidably matched with the two cross bars 17.

[0030] To further explain, the limiting plate 18 has two parts, one of which spans the light-transmitting plate 4, and the other is a sliding part that bypasses the first roller 5 and the second roller 6, and the sliding part can adjust the contact range of the first roller 5 and the second roller 6 with the paper document.

[0031] To further explain, the area between the two limit blocks 18 constitutes a constraint area for constraining the paper document. Therefore, based on the size of the paper document, the contact range between the first roller 5 and the second roller 6 and the paper document is adjusted so that the paper document maintains an angle of 90° with the first roller 5 and the second roller 6.

[0032] The following contents will be described in this embodiment:

[0033] First, the paper document is in rolling contact with at least one of the first roller 5 and the second roller 6 within the range where the light-transmitting plate 4 is located, so that the paper document can be moved at the light-transmitting plate 4 .

[0034] Second, the distance from the first scanning unit 8 and the second scanning unit 9 to the light-transmitting plate 4 is adjustable. The adjustment structure can be a telescopic rod in which one end is fixedly connected to the frame and the other end is fixedly connected to the first scanning unit 8 or the second scanning unit 9, or it can be other electric adjustment structures available on the market.

[0035] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0036] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the utility model and are not used to limit the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. A scanner document scanning structure, comprising a frame, a light-transmitting plate combined with the frame, and a conveying structure located on both sides of the light-transmitting plate for rolling contact with a paper document, characterized in that: The light-transmitting plate is within the moving path of the paper document; The light-transmitting plate is provided with a first scanning unit and a second scanning unit. When the paper document moves relative to the light-transmitting plate, the first scanning unit and the second scanning unit scan the front and back sides of the paper document.

2. A scanner document scanning structure according to claim 1, characterized in that: It also includes a limiting structure, which adjusts the contact range between the conveying structure and the paper document so that the angle between the paper document and the conveying structure is always maintained at 90°.

3. A scanner document scanning structure according to claim 2, characterized in that: The limiting structure includes two cross bars fixed in the frame, and a limiting block slidably matched with the two cross bars; Two limit blocks span the light-transmitting plate; The area formed between the two limit blocks is a moving area that allows the angle between the paper document and the conveying structure to always remain at 90°.

4. The document scanning structure of a scanner according to claim 1, characterized in that: The paper document is in rolling contact with at least one conveying structure within the range where the light-transmitting plate is located.

5. A scanner document scanning structure according to claim 4, characterized in that: The two conveying structures have the same conveying direction and transmission coordination, and also include a driving part, which outputs kinetic energy to any one of the conveying structures.

6. The scanner document scanning structure according to claim 1, characterized in that: The distances from the first scanning unit, the second scanning unit to the light-transmitting plate are adjustable.

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