Document high-speed scanner
By designing an adaptive pressing structure for the sliding frame and pressure plate in the document scanner, the stability problem of document archiving during photography was solved, achieving stable pressing of documents of different thicknesses and improving the accuracy of document archiving.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-12
- Publication Date
- 2026-03-13
AI Technical Summary
When existing document scanners photograph and archive bound documents, the documents are prone to displacement due to elasticity and gravity, making it impossible to stably press them down and affecting the accuracy of the photographic archiving.
By employing two first pressure plates and two second pressure plates, and through the cooperation of a sliding frame and a reset element, adaptive pressing of documents of different thicknesses is achieved, ensuring that the documents are stably pressed against the worktable.
It improves the accuracy of document photo archiving, avoids document movement during the photo-taking process, and ensures photo-taking stability.
Smart Images
Figure CN223993692U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of office equipment technology, and in particular to a document scanner. Background Technology
[0002] In office work, document scanners are often used to photograph and archive paper documents. Existing document scanners include a worktable for placing documents and a camera mounted on top of the worktable. Since documents are bound into booklets, increasing the overall thickness, when using existing document scanners to photograph and archive bound documents, the booklet of documents is unfolded and placed on the worktable. Due to the document's own elasticity and gravity, the document will shift and needs to be manually secured. Although some document scanners have pressure plates for pressing the document down, after the document is unfolded, the number of pages on both sides is different. The pressure plates can only press the side with more pages against the worktable, while the side with fewer pages cannot be pressed down, which cannot guarantee the flatness of the document and the stability when photographing and archiving.
[0003] Therefore, a document scanner that solves the above problems is needed. Utility Model Content
[0004] This invention proposes a document scanner that uses two first pressure plates and two second pressure plates to achieve adaptive pressing of documents of different thicknesses, ensuring that the documents are stably pressed against the worktable and improving the accuracy of photo archiving.
[0005] The technical solution of this utility model is implemented as follows:
[0006] A document scanner includes a worktable with a binding edge insertion slot at the top. A support arm is fixedly mounted on the worktable, and a camera is fixedly mounted on the support arm. The camera is positioned above the worktable. A sliding frame is slidably mounted between the camera and the worktable in a vertical direction. A hinge shaft is horizontally positioned below the sliding frame. The projection of the hinge shaft onto the binding edge insertion slot in the vertical direction coincides with the projection of the slot. A vertically positioned connecting rod is connected to each end of the hinge shaft. The upper ends of the two connecting rods pass through the sliding frame and are fixedly connected to a first limiting block. The hinge shaft and the sliding frame... The moving frame is equipped with a first reset element. Two first pressure plates are rotatably mounted on the hinge shaft. The two first pressure plates are located on both sides of the hinge shaft. A second pressure plate is hinged to the outer side of each of the two first pressure plates. A plurality of guide sleeves are hinged on the sliding frame. A first telescopic rod is hinged to both ends of each of the two first pressure plates. A second telescopic rod is hinged to both ends of each of the two second pressure plates. The upper end of each of the first telescopic rods and the upper end of each of the second telescopic rods are constrained and installed in the corresponding guide sleeve. A second reset element is provided between each of the first telescopic rods and each of the second telescopic rods and the corresponding guide sleeve.
[0007] As a preferred technical solution, the outer sides of the two first pressure plates and the outer sides of the two second pressure plates are both inclined upwards.
[0008] As a preferred technical solution, the upper end of each of the first telescopic rods and the upper end of each of the second telescopic rods extend into the corresponding guide sleeve and are fixedly connected to a second limiting block, and each of the second reset elements is disposed between the corresponding guide sleeve and the corresponding second limiting block.
[0009] As a preferred technical solution, two guide columns are fixedly installed vertically inside the support arm, and sliding plates are slidably installed on the two guide columns. A vertically arranged lead screw is rotatably installed inside the support arm, and a nut is threaded onto the lead screw and fixedly installed on the sliding plate.
[0010] As a preferred technical solution, the support arm is provided with a through groove along the vertical direction, and two connecting plates are fixedly installed on the sliding plate. The two connecting plates extend out of the corresponding through groove and are fixedly connected to the sliding frame.
[0011] By adopting the above technical solution, the beneficial effects of this utility model are as follows:
[0012] Since the document scanner includes a sliding frame, during use, the binding edge of the document is inserted into the binding edge insertion slot, the document is unfolded, the sliding frame moves downward, and two first pressure plates press against the middle of the document without text, pressing the binding part of the document against the worktable. Two second pressure plates press the document on both sides against the worktable, and the camera takes pictures of the document for archiving. In this utility model, by setting two first pressure plates and two second pressure plates, adaptive pressing can be performed on documents of different thicknesses, so that the document is stably pressed against the worktable, improving the accuracy of photo archiving.
[0013] Since the document scanner includes a guide sleeve and a first telescopic rod, during the downward movement of the sliding frame, the bottom of the first pressure plate abuts against the binding part in the middle of the document. As the sliding frame continues to move downward, the upper end of the first telescopic rod slides into the corresponding guide sleeve. Under the action of the second reset element, the first pressure plate presses the binding part in the middle of the document against the worktable. The cooperation of the guide sleeve, the first telescopic rod, and the second reset element allows the first pressure plate to press binding parts of different thicknesses.
[0014] Since the document scanner includes a guide sleeve and a second telescopic rod, the second telescopic rod will slide into the corresponding guide sleeve during the downward movement of the sliding frame. Under the action of the second reset element, the second pressure plate presses documents of different thicknesses against the worktable, so that the second pressure plate can adapt to the thickness of the document. Attached Figure Description
[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0016] Figure 1 This is a schematic diagram of the structure of this utility model;
[0017] Figure 2 for Figure 1 Enlarged structural diagram at point A;
[0018] Figure 3 This is a schematic diagram of the sliding frame structure;
[0019] Figure 4 This is a schematic diagram of the lead screw structure;
[0020] Figure 5 This is a reference diagram showing the state of this utility model in use.
[0021] The components include: 1. Workbench; 2. Binding edge insertion slot; 3. Support arm; 4. Camera; 5. Sliding frame; 6. Hinge shaft; 7. Connecting rod; 8. First limiting block; 9. First pressure plate; 10. Second pressure plate; 11. Guide sleeve; 12. First telescopic rod; 13. Second telescopic rod; 14. Second limiting block; 15. Guide column; 16. Sliding plate; 17. Lead screw; 18. Nut; 19. Through slot; 20. Connecting plate; 21. Drive motor; 22. Mounting block; 23. First compression spring; 24. Second compression spring; 25. Document. Detailed Implementation
[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0023] like Figures 1-5As shown, the document scanner includes a worktable 1. A binding edge insertion slot 2 is located on the top of the worktable 1. A support arm 3 is fixedly mounted on the worktable 1, and a camera 4 is fixedly mounted on the support arm 3. The camera 4 is positioned above the worktable 1. A sliding frame 5 is slidably mounted between the camera 4 and the worktable 1 in the vertical direction. A hinge shaft 6 is horizontally positioned below the sliding frame 5. The projection of the hinge shaft 6 onto the binding edge insertion slot 2 in the vertical direction coincides with the projection of the hinge shaft 6 onto the binding edge insertion slot 2. A vertically positioned connecting rod 7 is connected to each end of the hinge shaft 6. The upper ends of the two connecting rods 7 pass through the sliding frame 5 and are fixedly connected to a first limiting block 8. The hinge shaft 6 and the sliding frame 5 are connected... A first reset element is provided. Two first pressure plates 9 are rotatably mounted on the hinge shaft 6. The two first pressure plates 9 are located on both sides of the hinge shaft 6. A second pressure plate 10 is hinged to the outer side of each of the two first pressure plates 9. Several guide sleeves 11 are hinged to the sliding frame 5. A first telescopic rod 12 is hinged to both ends of each of the two first pressure plates 9. A second telescopic rod 13 is hinged to both ends of each of the two second pressure plates 10. The upper end of each first telescopic rod 12 and the upper end of each second telescopic rod 13 are constrained and installed in the corresponding guide sleeve 11. A second reset element is provided between each first telescopic rod 12 and each second telescopic rod 13 and the corresponding guide sleeve 11.
[0024] In this utility model, both first pressure plates 9 and both second pressure plates 10 are transparent, and both second pressure plates 10 press against the textless part of the binding section in the middle of the document 25. The camera 4 is a DV-BD4044S305AD model camera from Diweitai.
[0025] The outer sides of the two first pressure plates 9 and the outer sides of the two second pressure plates 10 are all inclined upwards.
[0026] In this invention, the outer sides of the two first pressure plates 9 and the outer sides of the two second pressure plates 10 are inclined upwards, so that during the pressing of the document 25, the two first pressure plates 9 first press the binding part in the middle of the document 25, and with the binding edge insertion slot 2, the document 25 is limited as a whole. As the sliding frame 5 continues to move downwards, the two second pressure plates 10 press the document 25 on both sides. This method of pressing the binding part in the middle first and then pressing the document 25 on both sides avoids the document 25 from moving as a whole during the pressing of the document 25 on both sides, thus improving the accuracy of photographic archiving.
[0027] The upper end of each first telescopic rod 12 and the upper end of each second telescopic rod 13 extend into the corresponding guide sleeve 11 and are fixedly connected to the second limiting block 14. Each second reset element is disposed between the corresponding guide sleeve 11 and the corresponding second limiting block 14.
[0028] Two guide posts 15 are fixedly installed vertically inside the support arm 3. Sliding plates 16 are slidably installed on the two guide posts 15. A vertically arranged lead screw 17 is rotatably installed inside the support arm 3. A nut 18 is threaded on the lead screw 17 and fixedly installed on the sliding plate 16.
[0029] The support arm 3 has a through groove 19 along the vertical direction. Two connecting plates 20 are fixedly installed on the sliding plate 16. The two connecting plates 20 extend out of the corresponding through groove 19 and are fixedly connected to the sliding frame 5.
[0030] A drive motor 21 is fixedly installed on the support arm 3, and the motor shaft of the drive motor 21 is connected to the lead screw 17 for transmission.
[0031] A mounting block 22 is fixedly connected to both ends of the hinge shaft 6. The lower ends of the two connecting rods 7 are fixedly mounted on the mounting block 22. The first reset element includes two first compression springs 23. The two first compression springs 23 are respectively sleeved on the corresponding connecting rods 7. The lower ends of the two first compression springs 23 abut against the corresponding mounting block 22, and the upper ends of the two first compression springs 23 abut against the sliding frame 5.
[0032] Each of the second reset elements includes a second compression spring 24.
[0033] In summary, this utility model achieves adaptive pressing of documents of different thicknesses through two first pressing plates and two second pressing plates, ensuring that the documents are stably pressed against the worktable and improving the accuracy of photo archiving.
[0034] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A document scanner comprising a worktable, characterized in that, The top of the workbench is provided with a binding edge insertion slot, the workbench is fixedly provided with a support arm, the support arm is fixedly provided with a camera, the camera is arranged above the workbench, a sliding frame is slidably arranged between the camera and the workbench in the vertical direction, a hinge shaft is horizontally arranged below the sliding frame, the hinge shaft coincides with the projection of the binding edge insertion slot in the vertical direction, two vertically arranged connecting rods are respectively connected to the two ends of the hinge shaft, the upper ends of the two connecting rods pass through the sliding frame and are fixedly connected with a first limiting block, the hinge shaft and the sliding frame are provided with a first reset element, two first pressing plates are rotatably arranged on the hinge shaft, the two first pressing plates are arranged on the two sides of the hinge shaft, second pressing plates are hingedly arranged on the outer sides of the two first pressing plates, a plurality of guide sleeves are hingedly arranged on the sliding frame, first telescopic rods are hingedly arranged at the two ends of the two first pressing plates, second telescopic rods are hingedly arranged at the two ends of the two second pressing plates, the upper end of each first telescopic rod and the upper end of each second telescopic rod are constrainedly arranged in the corresponding guide sleeve, and a second reset element is arranged between each first telescopic rod, each second telescopic rod and the corresponding guide sleeve.
2. The document scanner of claim 1, wherein, The outer sides of the two first pressing plates and the outer sides of the two second pressing plates are upwardly inclined.
3. The document scanner of claim 1, wherein, The upper end of each first telescopic rod and the upper end of each second telescopic rod extend into the corresponding guide sleeve and are fixedly connected with a second limiting block, and each second reset element is arranged between the corresponding guide sleeve and the corresponding second limiting block.
4. The document scanner of claim 1, wherein, Two guide columns are fixedly arranged in the support arm in the vertical direction, a sliding plate is slidably arranged on the two guide columns, a vertically arranged screw rod is rotatably arranged in the support arm, a nut is threadedly arranged on the screw rod, and the nut is fixedly arranged on the sliding plate.
5. The document scanner of claim 4, wherein, A through slot is arranged on the support arm in the vertical direction, two connecting plates are fixedly arranged on the sliding plate, and the two connecting plates respectively extend out of the through slot and are fixedly connected with the sliding frame.