TWI832795B - Scanning device - Google Patents

Abstract

A scanning device suitable for a scanning apparatus is provided. The scanning apparatus includes a first glass, a second glass, and an intermediary component. The intermediary component is located between the first glass and the second glass. The scanning device comprises a sliding holder, a scanning unit, and a movable unit. The scanning unit is located on the sliding holder. The movable unit is located on the scanning unit. The movable unit includes a main body element, a first elastic element, and a supporting element. The main body element is pivotally connected to the sliding seat through a pivot element which is located on one side of the main body element. The first elastic element is located between the main body element and the sliding seat. The supporting element is located on the main body element and away from the pivot element. The scanning unit can optionally move between the first glass and the second glass, and the supporting element abuts against the second glass to maintain the distance between the scanning unit and the first glass and the second glass.

Description

Scanning device

This case relates to a scanning device, especially a scanning device that maintains a distance from the glass.

Currently on the market, most of the flatbed scanning products (Scanner/MFP/Copy Machine) equipped with an Auto Document Feeder (ADF) use a FB platform (Flat-Bed) scanning device to avoid collision points. It adopts a two-piece glass design. The large piece of glass is used exclusively for flatbed scanning, while the small piece of glass is used exclusively for scanning using the automatic document feeder. The two are bridged by an intermediary.

However, since the image scanning module will move between the large and small pieces of glass, skid pads or skid rollers are usually provided on both sides of the image scanning module; their main purpose is to maintain The distance (imaging focal length) between the image scanning module and each glass surface is fixed to ensure the quality of the scanned image.

However, after long-term use, the image scanning module frequently moves between large and small glasses, which affects the stability of the module during scanning, such as jitter, resulting in a decrease in the resolution of the scanned image.

In view of the above, a scanning device is provided, which is suitable for scanning equipment. The scanning equipment includes a first glass, a second glass and an intermediary member. The intermediary member is provided between the first glass and the second glass. The scanning device includes a slide base, a scanning unit, and movable units. The scanning unit is located on the sliding base. The movable unit is provided in the scanning unit. The movable unit includes a body element, a first elastic element, and a supporting member. A pivot joint is provided on one side of the body element, and the body element is pivotably connected to the slide seat through the pivot joint. The first elastic element is arranged between the body element and the sliding seat. The supporting member is provided on the body element and away from the pivot portion. Wherein, the scanning unit can selectively move between the first glass and the second glass, and the supporting member is in contact with the second glass to maintain the distance between the scanning unit and the first glass and the second glass.

In some embodiments, the sliding seat is provided with at least one limiting through hole; each movable unit includes a limiting engaging member, the limiting engaging member is provided on the body component, and the limiting engaging member is located in the limiting through hole. .

In some embodiments, each movable unit includes a sliding element, the sliding element is located between the supporting member and the pivoting portion, and the height of the top edge of the sliding element is lower than the height of the top edge of the supporting member. When the sliding component is pressed by the intermediary component, the supporting component moves away from the second glass.

In some embodiments, the scanning unit is provided with a first guide hole, the sliding seat is provided with a first guide member, and the first guide member passes through the first guide hole.

In some embodiments, each movable unit includes a driving engaging member, the driving engaging member is provided on the body element, and the driving engaging member engages with the scanning unit.

In some embodiments, the scanning unit is provided with a second guide hole, each movable unit includes a second guide member, the second guide member is provided on the body element, and the second guide member passes through the second guide hole.

In some embodiments, the body component includes a fixed part and a sliding part. The sliding part is provided on one side of the fixed part. The sliding part can selectively protrude from the fixed part or be received on one side of the fixed part and support it. The parts are located on the sliding part.

In some embodiments, the body element includes a second elastic element. The fixed part includes a resisting wall and a sliding rail. The sliding part is provided on the slide rail, and the second elastic element is provided between the resisting wall and the sliding part.

In some embodiments, a scanning device is suitable for a scanning device. The scanning device includes a first glass, a second glass and an intermediary member. The intermediary member is disposed between the first glass and the second glass. The scanning device includes a slide base, a scanning unit, and a plurality of movable units. The sliding seat can selectively move under the first glass or the second glass. The scanning unit is arranged on the sliding seat and is suitable for scanning objects on the first glass or the second glass. Each movable unit is respectively provided on two corresponding sides of the scanning unit, and each movable unit includes a body component and a first elastic component. The body component includes a first end, a second end, a pivot part, a supporting component and a sliding component. The pivoting part is provided at the first end, the supporting member is provided at the second end, and the sliding element is provided between the first end and the second end. The body component is pivotally connected to the sliding seat through the pivoting portion. The first elastic component is disposed between the body component and the sliding seat, and drives the second end of the body component away from the sliding seat. Wherein, when the scanning unit is located under the first glass, the supporting member is in contact with the second glass. When the sliding seat can selectively move between the first glass and the second glass, and the sliding element is pressed by the intermediary member, the supporting member moves away from the second glass.

In some embodiments, the body component includes a fixed part and a sliding part, the sliding part is provided on one side of the fixed part, and the sliding part can selectively protrude from the fixed part or be received on one side of the fixed part. And the supporting piece is arranged on the sliding part.

When the scanning device moves between the first glass and the second glass, the support member in this case contacts the second glass, making it difficult for the support member to contact the intermediary member. Therefore, the scanning device is not easily affected by the intermediary member during the movement. The bumps are generated so that the distance between the scanning device and the first glass or the second glass is kept constant, thereby allowing the scanning device to maintain the resolution and quality of scanning.

Please refer to Figure 1, Figure 2 and Figure 3. This case is a scanning device suitable for a scanning device A. Scanning device A is, for example, but not limited to, a photocopier, a printer, and a business machine (having functions such as photocopying, scanning, and faxing). Scanning device A includes a first glass A10, a second glass A11 and an intermediary member A12. The intermediary member A12 is provided between the first glass A10 and the second glass A11, so that the first glass A10 and the second glass A11 are located on the same On the horizontal plane, as shown in FIG. 6 , the intermediary member A12 forms a protrusion relative to the bottom surface of the first glass A10 and the bottom surface of the second glass A11. The scanning device includes a sliding base 10 , a scanning unit 20 and a movable unit 30 .

Please refer to Figures 2 and 4. A guide hole 11 is provided at the bottom of the slide base 10. The guide hole 11 is used for a guide rod to extend (not shown in the figure). The slide base 10 is used to connect the scanning device A. The driving device (not shown) is used to drive the sliding seat 10 to move along the guide rod, so that the sliding seat 10 moves between the first glass A10 and the second glass A11. The driving device is, for example but not limited to, a servo motor.

Please refer to FIG. 2 and FIG. 4 , the scanning unit 20 is provided on the slide 10 . The scanning unit 20 is used to scan documents (such as pictures, documents) located on the upper surface of the first glass A10 or the second glass A11 to obtain scanned data when the driving device drives the slide 10 to move along the guide rod.

Please refer to FIG. 2 , FIG. 3 and FIG. 4 . The movable unit 30 is provided in the scanning unit 20 . The movable unit 30 includes a body component 31 , a first elastic component 32 and a supporting member 33 . In some embodiments, the number of movable units 30 is two, and they are disposed at both ends of the scanning unit 20 to stably drive the scanning unit 20 to move.

Please refer to FIG. 3 and FIG. 4 . The body component 31 includes a pivot portion 313 . The body component 31 is pivoted to the slide base 10 through the pivot portion 313 . In some embodiments, the pivot portion 313 is a protruding shaft protruding from the first end 311 , the sliding seat 10 includes a pivot hole 12 , the pivot portion 313 extends through the pivot hole 12 , so that the pivot portion 313 is connected to the pivot hole 12 . Relative rotation can be formed between the pivot holes 12 . In some embodiments, the body component 31 includes a first end 311 and a second end 312, and the pivot portion 313 is provided at the first end 311. Therefore, the second end 312 of the body member 31 can swing up and down with the pivot portion 313 as the axis.

Referring to FIG. 3 and FIG. 4 , the first elastic element 32 is provided between the body element 31 and the sliding seat 10 , preferably adjacent to the second end 312 of the body element 31 . In some embodiments, the first elastic element 32 is a spring.

Referring to FIG. 3 and FIG. 4 , the supporting member 33 is provided on the body component 31 and away from the pivot portion 313 . In some embodiments, the supporting member 33 is provided on the second end 312 . In some embodiments, the supporting member 33 is a roller, but it may also be a slide or other equivalent element suitable for movement. The supporting member 33 is pressed against the bottom surface of the second glass A11 to fix the distance between the scanning unit 20 and the first glass A10 and the second glass A11.

Please refer to FIG. 6 and FIG. 7 . When the scanning device is not in use, the scanning unit 20 (see FIG. 4 ) will be located under the first glass A10 , and the supporting member 33 is against the bottom surface of the second glass A11 . When the scanning device scans the document provided by the automatic document feeder (ADF), the scanning device is fixed under the first glass A10, and at this time, the supporting member 33 is pressed against the bottom surface of the second glass. When the user uses a large glass platform to scan, the scanning device will move under the second glass A11 and move under the second glass A11 to scan. Since the supporting member 33 continuously abuts the bottom surface of the second glass A11 during the scanning process, the scanning device is not easily affected by the intermediary member A12 to cause bumps and impact the second glass.

Please refer to FIG. 3 together with FIG. 4 . In some embodiments, the sliding seat 10 is provided with a limiting through hole 13 . Each movable unit 30 includes a limiting engaging piece 34 , which is provided on the body component 31 , and the limiting engaging piece 34 can be selectively inserted and engaged in the limiting through hole 13 . During the assembly process between the movable unit 30 and the sliding seat 10, as long as the pivot portion 313 is pivotally connected to the sliding seat 10, the limiting engaging member 34 can fall into the limiting through hole 13 by pressing the body element 31. Assembly is easy. At the same time, since the first elastic element 32 is disposed between the body element 31 and the sliding seat 10, when the first elastic element 32 pushes the body element 31 to cause the body element 31 to swing with the pivot portion 313, the limiting engaging member 34 and the limiting through hole 13 can limit the swing amount of the body component 31 . In some embodiments, the limiting engaging member 34 is a hook body, and the limiting through hole 13 is a longitudinal through hole. In some embodiments, the limiting engaging member 34 is located at the second end 312 .

Each movable unit 30 includes a sliding element 35. The sliding element 35 is located between the supporting member 33 and the pivot portion 313. The top edge height of the sliding element 35 is lower than the top edge height of the supporting member 33, but higher than the scanning height. The highest point of the unit 20 (usually the rod lens). When the sliding element 35 is pressed by the intermediary member A12, the body element 31 swings downward with the pivot portion 313 as the axis, thereby driving the scanning unit 20 to move downward. Therefore, when the scanning device moves through the intermediary member A12, the intermediary member A12 will press against the sliding element 35, causing the second end 312 of the body element 31 to swing downward and drive the scanning unit 20 to move downward, thereby preventing the scanning unit 20 from colliding with the sliding element 35. Friction occurs between the intermediaries A12 and damages the lens on the scanning unit 20 .

Please refer to FIG. 5 . In some embodiments, there is a moving space 15 between the scanning unit 20 and the slide 10 . Therefore, when the second end 312 of the body member 31 swings downward, the scanning unit 20 is driven to move downward. , the scanning unit 20 moves into the moving space 15 while the slide 10 remains stationary.

Please refer to FIGS. 4 and 5 . In some embodiments, the scanning unit 20 is provided with a first guide hole 21 , the slide base 10 is provided with a first guide member 14 , and the first guide member 14 is inserted through the first guide hole 21 . A guide hole 21. Therefore, when the second end 312 of the body element 31 swings downward to drive the scanning unit 20 to move downward, the first guide hole 21 is affected by the first guide member 14, thereby limiting the movement of the scanning unit 20 and preventing deviation. . In some embodiments, the first guide 14 is a cylinder.

Please refer to FIG. 3 . In some embodiments, each movable unit 30 includes a driving engaging member 36 . The driving engaging member 36 is provided on the body component 31 , and the driving engaging member 36 engages the scanning unit 20 . Please refer to Figures 6 and 7. When the scanning device moves under the second glass A11 and the sliding element 35 leaves the intermediary A12, the body element 31 will be pushed by the first elastic element 32 to pivot. 313 represents the upward rotation of the axis. At this time, driving the engaging member 36 will drive the scanning unit 20 to move upward to its original position. In some embodiments, the driving engaging member 36 is a hook body, and the scanning unit 20 includes a driving through hole 22 , and the driving engaging member 36 passes through the driving through hole 22 to hook the scanning unit 20 . Please refer to FIG. 4 and FIG. 5 . In one embodiment, the movable unit 30 includes another driving engaging member 36A. The driving engaging member 36A hooks the edge of the scanning unit 20 to achieve the purpose of driving the scanning unit 20 . Purpose.

Please refer to FIGS. 3 and 4 . In some embodiments, the scanning unit 20 is provided with a second guide hole 23 , and each movable unit 30 includes a second guide member 37 . The second guide member 37 is provided on the body. The second guide member 37 of the component 31 is passed through the second guide hole 23 . Therefore, when the body member 31 rotates upward or downward with the pivot portion 313 as the axis, the second guide member 37 is guided by the second guide hole 23 so that the body member 31 is less likely to deviate.

Please refer to FIGS. 8 and 9 . In some embodiments, the body component 31 includes a fixed part 38 and a sliding part 39 . The sliding part 39 is provided on one side of the fixed part 38 . The sliding part 39 can optionally move freely. The fixed part 38 protrudes or is received on one side of the fixed part 38 , and the supporting member 33 is provided on the sliding part 39 . Please refer to FIG. 8 . When the movable unit 30 moves between the first glass A10 and the second glass A11 , the sliding part 39 keeps protruding from the fixed part 38 . When the movable unit 30 moves from one end of the second glass A11 (ie, adjacent to the intermediary A12) to the other end of the second glass A11 (ie, far away from the intermediary A12), the sliding part 39 will be affected by the inner wall A13 of the scanning device A. It is mortgaged and stored on one side of the fixing part 38, as shown in Figure 9. In this way, the distance between the second glass A11 and the inner wall A13 can be reduced, thereby reducing the size of the scanning device A.

Please refer to Figures 8 and 9. In some embodiments, the body element 31 includes a second elastic element 314; the fixing portion 38 includes a resisting wall 381 and a sliding rail 382. The resisting wall 381 and the sliding rail 382 are located on the body. Element 31 on the same side. The sliding part 39 is provided on the slide rail 382 , and the second elastic element 314 is provided between the resisting wall 381 and the sliding part 39 . Therefore, when the movable unit 30 moves to the other end of the second glass A11, the sliding part 39 will be mortgaged by the inner wall A13 of the scanning device A and accommodated on one side of the fixed part 38, while the second elastic element 314 is in a contracted state. When the movable unit 30 leaves the other end of the second glass A11, the second elastic element 314 is in an extended state and pushes the sliding part 39 so that the sliding part 39 protrudes from the fixed part 38. In some embodiments, the second elastic element 314 is a spring.

In some embodiments, the scanning device uses the supporting member 33 to keep pushing against the bottom surface of the second glass A11, so that the scanning device is less prone to bumps when passing through the intermediary member A12, thereby preventing the second glass A11 from being hit. And by using the sliding element 35, when the scanning device passes through the intermediary A12, the intermediary A12 will press against the sliding element 35, causing the body element 31 to rotate downward with the pivot portion 313 as the axis, thereby driving the scanning unit 20 downward. Move to avoid friction between the scanning unit 20 and the intermediary A12.

A: Scanning device A10: First glass A11: Second glass A12: Intermediaryware A13: medial wall 10:Sliding seat 11: Guided perforation 12: Pivot hole 13:Limited through hole 14: First guide 15:Mobile space 20: Scanning unit 21: First guide hole 22: Drive perforation 23:Second guide hole 30: Movable unit 31:Body components 311:First end 312:Second end 313: Pivot joint 314: Second elastic element 32: First elastic element 33: Support piece 34:Limiting clamping parts 35: Sliding element 36: Drive the clamping parts 36A: Drive the clamping parts 37:Second guide 38: Fixed part 381:Resist wall 382:Slide rail 39:Sliding part

Figure 1 is a schematic diagram of the appearance of a scanning device according to some embodiments. Figure 2 is a schematic diagram of the appearance of a scanning device according to some embodiments. Figure 3 is a schematic diagram of the appearance of a movable unit according to some embodiments. Figure 4 is a partially exploded view of a scanning device and a movable unit according to some embodiments. Figure 5 is a cross-sectional view of a scanning device according to some embodiments. Figure 6 is a schematic cross-sectional view of the scanning device moving on the first glass and the second glass according to some embodiments. Figure 7 is a schematic cross-sectional view of the scanning device moving on the first glass and the second glass according to some embodiments. Figure 8 is a schematic diagram of the appearance of the movable unit according to some embodiments. Figure 9 is a schematic cross-sectional view of the scanning device moving to the inner wall of the scanning device according to some embodiments.

10:Sliding seat

12: Pivot hole

13:Limited through hole

14: First guide

20: Scanning unit

21: First guide hole

22: Drive perforation

23:Second guide hole

30: Movable unit

31:Body components

311:First end

312:Second end

313: Pivot joint

32: First elastic element

33: Support piece

34:Limiting clamping parts

35: Sliding element

36A: Drive the clamping parts

Claims (10)

A scanning device is suitable for a scanning device. The scanning device includes a first glass, a second glass and an intermediary. The intermediary is provided between the first glass and the second glass. The scanning device includes: a sliding seat; A scanning unit, the scanning unit is located on the sliding seat; and At least one movable unit is provided in the scanning unit, and the movable unit includes: A body component is provided with a pivot portion on one side, and the body component is pivoted to the slide seat through the pivot portion; A first elastic element is provided between the body element and the sliding seat; and A supporting member is provided on the body component and away from the pivot portion; Wherein, the scanning unit can selectively move between the first glass and the second glass, and the supporting member is in contact with the second glass to maintain the connection between the scanning unit and the first glass and the second glass. spacing. The scanning device according to claim 1, wherein the sliding seat is provided with at least one limiting through hole; each of the movable units includes a limiting engaging member, the limiting engaging member is provided on the body component, and the limiting engaging member The position engaging component is located in the limiting through hole. The scanning device of claim 1, wherein each of the movable units includes a sliding element located between the supporting member and the pivot portion, and the height of the top edge of the sliding element is lower than that of the supporting member. The height of the top edge of the resisting member; when the sliding member is pressed by the intermediary member, the body member swings downward with the pivot portion as the axis. The scanning device of claim 3, wherein the scanning unit is provided with a first guide hole, the slide base is provided with a first guide member, and the first guide member is inserted through the first guide hole. The scanning device according to claim 3, wherein each of the movable units includes a driving engaging member, the driving engaging member is provided on the body element, and the driving engaging member engages the scanning unit. The scanning device as claimed in claim 3, wherein the scanning unit is provided with a second guide hole, each of the movable units includes a second guide member, the second guide member is provided on the body component, and the second guide hole The guide piece is passed through the second guide hole. The scanning device of claim 1, wherein the body element includes a fixed part and a sliding part, the sliding part is provided on one side of the fixed part, and the sliding part can selectively protrude from the fixed part. Or be accommodated on one side of the fixed part; and the supporting member is provided on the sliding part. The scanning device according to claim 7, wherein the body element includes a second elastic element; the fixed part includes a resisting wall and a slide rail; the sliding part is provided on the slide rail, and the second elastic element is provided on the between the resisting wall and the sliding part. A scanning device suitable for a scanning device. The scanning device includes a first glass, a second glass and an intermediary. The intermediary is disposed between the first glass and the second glass. The scanning device includes : A sliding seat that can selectively move under the first glass or the second glass; A scanning unit, the scanning unit is provided on the sliding seat and is suitable for scanning objects on the first glass or the second glass; A plurality of movable units are provided on corresponding two sides of the scanning unit. Each movable unit includes: A body component, which includes a first end, a second end, a pivot portion, a supporting member and a sliding element. The pivoting portion is provided at the first end, and the supporting member is provided at the third end. Two ends, the sliding element is provided between the first end and the second end; the body element is pivotally connected to the sliding seat through the pivoting portion; and A first elastic element is provided between the body element and the sliding seat and drives the second end of the body element away from the sliding seat; Wherein, when the scanning unit is located under the first glass, the supporting member is in contact with the second glass; when the sliding seat is selectively moved between the first glass and the second glass, the When the sliding element is pressed by the intermediary member, the body element swings downward with the pivot portion as the axis. The scanning device of claim 9, wherein the body element includes a fixed part and a sliding part, the sliding part is provided on one side of the fixed part, and the sliding part can selectively protrude from the fixed part. Or be accommodated on one side of the fixed part; and the supporting member is provided on the sliding part.

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