CN101224828A - Paper feeder - Google Patents

Abstract

The invention provides a paper feeding device, which comprises a shell, a paper feeding module, a paper stopping piece and a swing arm. Wherein, the shell comprises a paper feed channel. The paper feeding module is pivoted above the paper feeding channel and can swing between a paper feeding position and a preparation position. The paper stopper is arranged below the paper feed passage. The swing arm is pivoted below the paper feeding channel and comprises a first end part abutting against the bottom of the paper feeding module and a second end part abutting against the bottom of the paper stopping piece. When the paper feeding module moves from the paper feeding position to the preparation position, the paper feeding module presses the first end part downwards, so that the paper blocking part is lifted by the second end part and then protrudes out of the bottom of the paper feeding channel. The invention has the advantages that the paper blocking piece can be maintained in an upright state through the assistance of the swinging arm and the guide groove, thereby achieving the effect of paper blocking, and simultaneously avoiding the situation that the paper blocking piece rotates after being pushed by paper.

Description

Paper feeder

technical field

The invention relates to a paper feeding device, in particular to a paper feeding device with a paper stopper.

Background technique

Traditionally, when a user manually puts documents into the scanner page by page for scanning, a lot of precious time and human resources are often wasted. Therefore, an automatic paper feeding device that can cooperate with scanners has been developed on the market. The user only needs to place the document on the paper feeding path of the paper feeding device, and the paper feeding device will be driven and set above the paper feeding path. A paper feeding module is used to feed the stacked papers sequentially, and then automatically complete the document scanning process.

However, when the user places the document on the paper feeding path and prepares to scan the document, the front edge of the document is often inserted directly into the paper feeding path, causing the disadvantage of simultaneously feeding multiple sheets of paper into the paper feeding module. In order to improve this shortcoming, most of the current paper feeding devices are equipped with a paper stopper at the bottom or above the paper feeding path. The front edge first aligns the paper under the paper feeding module, and when the paper feeding device drives the paper feeding module to perform the paper feeding operation, the paper stopper will be removed so that the paper can smoothly enter the inside of the paper feeding device.

FIG. 1A is a perspective view showing a known paper feeding module 11 and a paper stopper 12 disposed in a paper feeding device. The paper blocking member 12 is pivotally disposed below the paper feeding module 11 , wherein the paper feeding module 11 includes a pressing portion 111 , and the paper blocking member 12 includes an inclined portion 121 and a paper blocking portion 122 . When the paper feeding module 11 swings upwards to the ready position, the paper blocking portion 122 of the paper blocking member 12 is in a standing state, and thus can abut against the leading edge of the paper to play a paper blocking effect. When the paper feeding module 11 swings down to the paper feeding position to perform the paper feeding operation, the pressing part 111 of the paper feeding module 11 will press down on the inclined part 121 of the paper stopper 12, causing the paper stopper 122 to rotate, Then it descends to the bottom of the paper feeding path, so that the paper can freely pass through the paper stopper 12 without being blocked.

Next, refer to the relative positions of the paper feeding module 11 and the paper stopper 12 in the known paper feeding device shown in FIG. 1B . The paper stopper 12 of the above-mentioned known paper feeding device has the following problems, that is, when the user puts a stack of papers into the paper feeding path of the paper feeding device, the paper St on the top layer is likely to be lost when the user exerts too much force or If the leading edge of the paper is not aligned in advance, it is directly pressed down on the inclined portion 121 of the paper stopper 12, causing the paper stopper 122 to rotate and descend to the bottom of the paper feeding path, thus losing the effect of paper stopper. The paper feeding device disclosed in US Patent No. 6,792,241 employs the above-mentioned paper stopper and paper feeding module.

Contents of the invention

One of the main purposes of the present invention is to provide a paper feeding device, which maintains the paper stopper in an upright state with the assistance of a swing arm and a guide groove, thereby achieving the effect of paper stoppers, and at the same time avoiding the paper stopper A situation where rotation occurs after being pushed by paper.

The invention provides a paper feeding device, comprising:

A casing, a paper feeding channel is arranged in the casing;

A paper feeding module, pivotally arranged above the paper feeding channel, the paper feeding module includes a paper feeding roller and a paper separation roller;

a paper stopper, set at the position below the paper feeding passage and close to the paper feeding roller; and

A swing arm, pivotally arranged below the paper feeding channel at a position close to the paper separation roller, the swing arm includes a first end and a second end, wherein the first end abuts against the bottom of the paper feeding module, and the second end abuts against the bottom of the paper feeding module The two ends are against the bottom of the paper retaining member.

Preferably, the paper feeding module further includes a wing, which is used to press against the top of the first end.

Preferably, the second end of the swing arm is an elastic element.

Preferably, the paper feeding device further includes a guide groove, which is arranged at the bottom of the paper feeding path to guide the movement of the paper stopper.

The invention provides a paper feeding device, comprising:

A casing, a paper feeding channel is arranged in the casing;

a paper-feeding module, pivotally arranged above the paper-feeding channel, and can swing between a paper-feeding position and a standby position;

a paper stopper, arranged below the paper feeding path; and

a swing arm, including a first end against the bottom of the paper feeding module and a second end against the bottom of the paper stopper;

Wherein, when the paper-feeding module moves from the paper-feeding position to the ready position, the paper-feeding module presses down the first end, so that the paper stopper is lifted by the second end, and then protrudes from the bottom of the paper-feeding passage.

Preferably, when the paper feeding module moves from the standby position to the paper feeding position, the paper blocking member descends into the bottom of the paper feeding channel.

Preferably, the paper feeding module further includes a wing, which is used to press against the top of the first end of the swing arm.

Preferably, the paper feeding device further includes a guide groove, which is arranged at the bottom of the paper feeding path to guide the movement of the paper stopper.

Compared with the traditional technology, the present invention has the advantage that it can maintain the paper stopper in an upright state with the assistance of the swing arm and the guide groove, so as to achieve the effect of paper stopper, and at the same time, it can prevent the paper stopper from being pushed by the paper. Rotation occurs afterwards.

Description of drawings

Through the following drawings and descriptions, the present invention can be understood more deeply:

FIG. 1A is a perspective view showing a paper feeding module and a paper stop in a known paper feeding device;

Fig. 1B shows the relative positions of the paper feeding module and the paper stopper in the known paper feeding device;

Fig. 2 is the external view showing the paper feeding device of a preferred embodiment of the present invention;

Fig. 3 is a perspective view showing a paper feeding module, a paper stopper and a swing arm in the paper feeding device;

Fig. 4A shows that when the paper feeding module is at the ready position, the paper stopper in the paper feeding device is lifted to protrude from the bottom of the paper feeding channel;

Fig. 4B shows that when the paper feeding module is at the paper feeding position, the paper stopper in the paper feeding device descends to the bottom of the paper feeding channel;

Fig. 4C shows that when the paper is pressed against the first end of the swing arm, the second end of the swing arm is deformed;

Fig. 4D shows that when the paper passes through the first end of the swing arm, the second end of the swing arm returns to its original state; and

FIG. 4E shows that when the paper feeding module returns to the ready position after completing the paper feeding operation, the paper stopper in the paper feeding device is lifted again to protrude from the bottom of the paper feeding channel.

Wherein, the reference signs are explained as follows:

Paper feeding module 11 Wing 211A Pressing part 111 Paper feeding roller 212

Paper stopper 12 Paper separation roller 213 Inclined part 121 Drive shaft 214

Paper Stop 122 Paper Stop 22 Paper St Groove 221

Paper feeding device 2 swing arm 23 housing 20 first end 231

Paper feed channel 201 second end 232 guide groove 202 rotating shaft 233

Paper feed module 21 Paper S frame 211

Detailed ways

For how the paper feeding device provided by the present invention maintains the paper stopping member in an upright state with the assistance of the swing arm and the guide groove to achieve the paper blocking effect, please refer to the description of the following embodiments.

FIG. 2 is an external view showing a paper feeding device according to a preferred embodiment of the present invention. The paper feeding device 2 includes a housing 20 , a paper feeding module 21 , a paper blocking member 22 and a swing arm 23 (please refer to FIG. 3 ). A paper feeding channel 201 is disposed inside the casing 20 for carrying the paper S to be scanned by the user. The paper feeding module 21 is pivotally arranged above the paper feeding channel 201 for feeding paper, so as to feed the paper S into the inside of the paper feeding device 2 . The paper feeding module 21 includes a frame 211, a paper feeding roller 212, a paper separating roller 213 (please refer to FIG. 4A ), and a drive shaft 214 passing through the frame 211 and sleeved on the paper separating roller 213, wherein the driving The shaft 214 is connected to the driving device (not shown in the figure) in the paper feeding device 2, so when the paper feeding device 22 is not performing the paper feeding operation or has completed the paper feeding operation, the paper feeding module 21 will be driven by the driving device When the paper feeding device 2 performs the paper feeding operation, the paper feeding module 21 will be driven by the driving device to swing down to a paper feeding position, so that the paper feeding roller 212 can touch the paper the top surface of the S, and then perform the paper feeding operation.

The paper feeding device 2 provided by the present invention mainly performs the paper stopping function through the cooperation of the paper feeding module 21, the paper stopping member 22 and the swing arm 23. FIG. 3 shows the paper feeding module 21, the paper stopping member 22 and the swing arm. Three-dimensional view of the arm 23. First, the swing arm 23 includes a first end portion 231, a second end portion 232, and a rotating shaft 233 between the first end portion 231 and the second end portion 232, so that the first end portion 231 and the second end portion The portion 232 has a rocking characteristic similar to the two ends of a seesaw, wherein the first end portion 231 can abut against the bottom of the paper feeding module 21, while the second end portion 232 can abut against the bottom of the paper stopper 22. bottom. The paper feeding module 21 is provided with a wing 211A on the outside of its frame 211 near the rear end (assuming that the paper feeding roller 212 is located at the front end of the paper feeding module 21, and the paper separation roller 213 is located at the rear end of the paper feeding module 21), for when the feeding When the paper module 21 swings upwards from the paper feeding position to the ready position, the flap 211A can press down on the top of the first end 231 of the swing arm 23, thereby causing the second end 232 of the swing arm 23 to swing upwards, and then the stop The paper member 22 is lifted up, and when the paper feeding module 21 swings down from the ready position to the paper feeding position, the paper blocking member 22 descends, thereby entering the bottom of the paper feeding channel 201 . In addition, a positioning structure, such as a groove 221 , is formed on the bottom of the paper blocking member for combining with the second end portion 232 of the swing arm 23 .

4A to 4E show part of the paper feeding process of the paper feeding device 2 in this embodiment, thereby illustrating the relative positions and operation of the paper feeding module 21 , the paper stopper 22 and the swing arm 23 in the paper feeding device 2 .

Referring first to FIG. 4A, in the paper feeding device 2 provided in this embodiment, the paper feeding module 21 is pivotally arranged above the paper feeding passage 201 in the casing 20, and includes a frame 211, a paper feeding roller 212, and a paper separation roller. 213 and a drive shaft 214; the paper stopper 22 is arranged below the paper feed path 201 close to the position of the feed roller 212; In addition, the paper feeding device 2 provided in this embodiment also includes an upright (or slightly inclined) guide groove 202, which is arranged at the bottom of the paper feeding path 201, for accommodating the paper stopper 22 and guiding the paper stopper 22 up and down moves.

Continuing to refer to FIG. 4A , when the paper feeding device 2 has not performed the paper feeding operation or has completed the paper feeding operation, the paper feeding module 21 is driven by the driving device to swing upwards to the ready position. During the upward swing of the paper feeding module 21 to the ready position, the flap 211A at the rear end of the paper feeding module 21 will press down on the top of the first end 231 of the swing arm 23 , so that the second end 232 of the swing arm 23 Swing up, and then lift the paper stopper 22, the paper stopper 22 originally arranged under the paper feed path 201 will protrude upright from the bottom of the paper feed path 201 along the guide groove 202 as shown in Figure 4A, thereby It can play the effect of blocking paper.

Continuing to refer to FIG. 4A, when the user places the paper S in the paper feeding path 201 and the leading edge of the paper S pushes against the paper stopper, the paper stopper 22 can still be clamped by the guide groove 202 and the swing arm 23. It can be maintained in an upright state under lifting, so that it can play the function of blocking paper.

Referring to FIG. 4B, when the paper feeding device 2 is performing the paper feeding operation, the paper feeding module 21 will be driven by the driving device to swing down to the paper feeding position, and then the paper feeding roller 212 will touch the top surface of the paper S, and then The paper feeding job can start. When the paper feeding module 21 swings down to the paper feeding position, the flap 211A located at the rear end of the paper feeding module 21 will swing upwards and no longer press down on the first end 231 of the swing arm 23, and the paper stopper 22 will not Then it is lifted by the second end portion 232 , and thus descends to the bottom of the paper feeding path 201 . At this time, the paper S fed by the paper feeding roller 212 can pass above the paper stopper 22 and move toward the inside of the paper feeding device 2 .

4C, when the paper S moves to the inside of the paper feeding device 2 and is pressed against the first end 231 of the swing arm 23, the paper stopper 22 is lifted in order to prevent the second end 232 of the swing arm 23 from swinging upward. and scratch the paper S, therefore, the second end 232 of the swing arm 23 provided in this embodiment adopts an elastic element, such as a shrapnel or a linear spring, so that when the paper S is pressed against the swing arm 23 When the first end 231 of the first end 231 is formed, the deformation of the elastic element can prevent the paper stopper 22 from protruding from the paper feeding path 201 and scratch the paper S, or reduce the protruding degree of the paper stopper 22 to reduce the Possibility of the small paper S being scratched.

Referring to FIG. 4D , when the paper S completely passes through the first end portion 231 of the swing arm 23 , the first end portion 231 of the swing arm 23 swings upward and restores the deformed second end portion 232 to its original shape.

Referring to Figure 4E, when the paper feeding device 2 completes the paper feeding operation, the paper feeding module 21 will be driven by the driving device to swing upwards to the ready position, and at the same time, the flap 211A at the rear end of the paper feeding module 21 will be pressed down to The top of the first end portion 231 of the swing arm 23 then lifts the paper blocking member 22 again to protrude from the bottom of the paper feeding path 201 , thereby exerting the paper blocking effect.

The reason why the paper stop provided in the conventional paper feeding device cannot play the paper stop function is that the known paper stop is designed to be rotatable, so it is easy to lose the paper stop function after being pushed by the paper. However, the paper stopper provided by the present invention can keep the paper stopper in an upright state when the paper feeding device is not feeding paper through the assistance of the guide groove and the swing arm, thereby exerting the effect of paper stopper.

The above-mentioned embodiments are only to illustrate the technical concept and characteristics of the present invention, and its purpose is to enable those skilled in the art to understand the content of the present invention and implement it accordingly, and cannot limit the scope of the present invention with it. The equivalent changes or modifications made to the concepts disclosed in the present invention should still fall within the protection scope of the claims of the present invention.

Claims (10)

1. A paper feeding device, comprising: A casing, the casing is provided with a paper feeding channel; A paper feeding module pivotally arranged above the paper feeding channel, the paper feeding module includes a paper feeding roller and a paper separation roller; a paper stopper, set at the position below the paper feeding channel and close to the paper feeding roller; and a swing arm, pivotally arranged below the paper feeding path and close to the paper separation roller, the swing arm includes a first end and a second end, wherein the first end leans against the paper feeding module the bottom of the paper stopper, the second end abuts against the bottom of the paper stopper. 2. The paper feeding device as claimed in claim 1, wherein the paper feeding module further comprises a wing, and the wing is used to press against the top of the first end. 3. The paper feeding device as claimed in claim 1, wherein the second end portion is an elastic element. 4. The paper feeding device as claimed in claim 3, wherein the elastic element is an elastic piece. 5. The paper feeding device as claimed in claim 3, wherein the elastic element is a linear spring. 6. The paper feeding device as claimed in claim 1, wherein the paper feeding device further comprises a guide groove disposed at the bottom of the paper feeding passage to guide the movement of the paper blocking member. 7. A paper feeding device, comprising: A casing, the casing is provided with a paper feeding channel; a paper-feeding module, pivotally arranged above the paper-feeding channel, and can swing between a paper-feeding position and a standby position; a paper stopper, arranged below the paper feeding channel; and a swing arm, including a first end against the bottom of the paper feeding module and a second end against the bottom of the paper stopper; Wherein, when the paper feeding module moves from the paper feeding position to the preparation position, the paper feeding module presses down the first end, so that the paper stopper is lifted by the second end, and then protrudes beyond the paper feeding bottom of channel. 8. The paper feeding device according to claim 7, wherein when the paper feeding module moves from the standby position to the paper feeding position, the paper stopper descends into the bottom of the paper feeding channel. 9. The paper feeding device as claimed in claim 7, wherein the paper feeding module further comprises a wing, and the wing is used to press against the top of the first end. 10. The paper feeding device as claimed in claim 7, wherein the paper feeding device further comprises a guide groove disposed at the bottom of the paper feeding passage to guide the movement of the paper stopper.

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