Printer

Abstract

The utility model discloses a printer which comprises a body, a paper feeding roller, a first paper feeding mechanism, a first pressing roller and a rotating piece. The paper feeding roller is arranged on the body and is suitable for rotating relative to the body; the first paper feeding mechanism is rotationally connected with the body and is provided with a first stress part; the rotating piece is rotationally connected with the body, is suitable for being located at a stopping position and a releasing position and is provided with a first force applying part, and the first force applying part is suitable for applying force to the first stress part so that the first paper feeding mechanism can rotate; the first abutting roller is arranged on the first paper feeding mechanism so as to move along with the first paper feeding mechanism when the first paper feeding mechanism rotates. When the rotating part is located at the stopping position, the first force applying part applies force to the first force bearing part, so that the first abutting roller is matched with the paper feeding roller. When the rotating piece is located at the release position, the first force application part releases the first stress part so as to allow the first pressing roller to be separated from the paper feeding roller. By means of the structure, paper feeding can be guaranteed, and paper jam can be removed easily.

Description

Technical Field

[0001] The utility model relates to the field of printing equipment, and particularly to a printer. Background Art

[0002] In office document printers, it is inevitable that paper jams occur during the printing process due to machine problems or other situations. After a paper jam occurs, it must be cleared before printing can continue. During the process of clearing the paper jam, since the transmission rollers inside the machine apply pressure to clamp the paper. During the process of clearing the paper jam, it is necessary to pull the paper forcefully, so it is not easy to clear the paper jam. Summary of the Utility Model

[0003] The purpose of the utility model is to overcome the above-mentioned defects or problems in the background art and provide a printer.

[0004] To achieve the above purpose, the utility model and its preferred embodiments adopt the following technical solutions, but the embodiments are not limited to the following solutions:

[0005] Solution 1, A printer, comprising

[0006] A main body;

[0007] A paper feed roller, which is installed on the main body and is adapted to rotate relative to the main body;

[0008] A first paper feed mechanism, which is rotationally connected to the main body and is provided with a first force-receiving part;

[0009] A first pressing roller, which is installed on the first paper feed mechanism; and

[0010] A rotating member, which is rotationally connected to the main body and is adapted to be located at a docking position and a release position, and is provided with a first force-applying part, and the first force-applying part is adapted to apply a force to the first force-receiving part to cause the first paper feed mechanism to rotate;

[0011] When the rotating member is at the docking position, it is fixedly connected to the main body, and the first force-applying part applies a force to the first force-receiving part to cause the first pressing roller to cooperate with the paper feed roller; when the rotating member is at the release position, the first force-applying part releases the first force-receiving part to allow the first pressing roller to disengage from the paper feed roller.

[0012] Solution 2, Based on Solution 1, when the rotating member is adapted to rotate to the docking position, it is magnetically connected or clamped or adhered or connected by screws to the main body in at least one of the ways.

[0013] Solution 3, Based on Solution 1, the first force-applying part is adapted to directly press the first force-receiving part.

[0014] Solution 4, based on Solution 1, the first force - applying part is adapted to be magnetically mutually repulsive with the first force - receiving part to apply a force to the first force - receiving part.

[0015] Solution 5, based on Solution 1, the first force - applying part is adapted to press against the first force - receiving part, and at least one of the first force - applying part and the first force - receiving part has elasticity.

[0016] Solution 6, based on Solution 1, the first paper - feeding mechanism includes a rotating frame and an elastic member installed on the rotating frame. The rotating frame is rotatably connected to the body and is adapted to mount the first pressing roller; the elastic member forms the first force - receiving part, and the first force - applying part is adapted to press against the first force - receiving part.

[0017] Solution 7, based on Solution 1, one of the first force - applying part and the first force - receiving part is a pressing groove, and the other is a pressing protrusion. The pressing protrusion is adapted to abut against the groove wall of the pressing groove so that the first force - applying part applies a force to the first force - receiving part.

[0018] Solution 8, based on Solution 1, further includes a second paper - feeding mechanism and a second pressing roller; the second paper - feeding mechanism is rotatably connected to the body and is provided with a second force - receiving part; the second pressing roller is mounted on the second paper - feeding mechanism; the rotating member is further provided with a second force - applying part, and the second force - applying part is adapted to apply a force to the second force - receiving part to make the second paper - feeding mechanism rotate;

[0019] When the rotating member is in the docking position, the second force - applying part applies a force to the second force - receiving part to make the second pressing roller cooperate with the paper - feeding roller; when the rotating member is in the release position, the second force - applying part releases the second force - receiving part to allow the second pressing roller to disengage from the paper - feeding roller.

[0020] Solution 9, based on Solution 8, the body is provided with a front paper - feeding channel. When the rotating member is in the docking position, the first paper - feeding mechanism and the body enclose a first channel, and the second paper - feeding mechanism and the body enclose a second channel. The front paper - feeding channel, the first channel, and the second channel are sequentially connected to form a paper - feeding channel.

[0021] Solution 10, based on Solutions 1 - 9, further includes a biasing member. One of the first pressing roller and the first paper - feeding mechanism is provided with a rotating shaft, and the other is provided with a runway hole. The rotating shaft is adapted to extend into the runway hole, and both ends of the biasing member act on the first paper - feeding mechanism and the first pressing roller respectively to make the first pressing roller slide towards the paper - feeding roller.

[0022] From the above description of the utility model and its preferred embodiments, it can be seen that, compared with the prior art, the technical solution of the utility model and its preferred embodiments have the following beneficial effects due to the adoption of the following technical means:

[0023] 1. Scheme 1 and its preferred embodiment, a printer includes a body, a paper feed roller, a first paper feed mechanism, a first pressure roller, and a rotating member. The paper feed roller is mounted on the body and is suitable for rotating relative to the body; the first paper feed mechanism is rotatably connected to the body and is provided with a first force-bearing portion; the rotating member is rotatably connected to the body and is suitable for being located at a parking position and a release position, and is provided with a first force-applying portion, the first force-applying portion being suitable for applying force to the first force-bearing portion to rotate the first paper feed mechanism; the first pressure roller is mounted on the first paper feed mechanism to follow the rotation of the first paper feed mechanism; the rotating member is in the parking position, and applies force to the first force-bearing portion through the first force-applying portion, so that the first pressure roller cooperates with the paper feed roller, at which time, the first pressure roller and the paper feed roller are close to each other, and the first pressure roller and the paper feed roller clamp the paper, and when one of them rotates in the forward direction, the other rotates in the reverse direction to loosen the paper. When the rotating member is in the release position, the first force-applying part releases the first force-receiving part to allow the first pressing roller to disengage from the paper feed roller. At this time, the distance between the first pressing roller and the paper feed roller can be increased, so that the paper between the two can be easily pulled out. When the rotating member is in the parking position, it is fixedly connected to the body to prevent the first paper feed mechanism from being out of the working state and ensure stability during use. Through the above structure, paper feeding can be ensured and paper jams can be easily removed.

[0024] And in some cases of clearing paper jams, the position of the first paper feed mechanism can remain unchanged (or only rotate slightly when pulling paper). Therefore, the relative positions of the first pressure roller and the paper feed roller are basically fixed, and there is no need to consider the movement alignment accuracy relative to the paper feed roller, which makes processing more convenient.

[0025] 2. In the second scheme and its preferred embodiment, the rotating member is suitable for being magnetically connected, snap-connected, bonded or screwed to the main body when rotating in the parking position, and the fixed connection is achieved through the corresponding structure. The above structure has mature technology and is easy to process.

[0026] 3. In scheme three and its preferred embodiment, the first force-applying part is suitable for directly pressing the first force-receiving part, thereby reducing the transmission structure between the two, which is simple and convenient.

[0027] 4. In scheme 4 and its preferred embodiment, the first force-applying part is suitable for magnetically repelling the first force-bearing part to apply force to the first force-bearing part. Compared with direct abutment, the processing accuracy does not need to be too high, and compared with hard abutment, this method has a certain buffering effect to prevent damage.

[0028] 5. In Solution Five and its preferred embodiments, the first force - applying part is adapted to press against the first force - receiving part, and at least one of the first force - applying part and the first force - receiving part is elastic. Compared with hard abutment, this method has a certain buffering effect to prevent damage and can compensate for certain machining errors.

[0029] 6. In Solution Six and its preferred embodiments, the first paper - feeding mechanism includes a rotating frame and an elastic member installed on the rotating frame. The rotating frame is rotatably connected to the body and is adapted to mount the first pressing roller; the elastic member forms the first force - receiving part, and the first force - applying part is adapted to press against the first force - receiving part. Due to the corresponding elasticity of the elastic member, there is a certain buffering effect when the first force - applying part and the first force - receiving part are pressed against each other.

[0030] 7. In Solution Seven and its preferred embodiments, one of the first force - applying part and the first force - receiving part is a pressing groove, and the other is a pressing protrusion. The pressing protrusion is adapted to abut against the groove wall of the pressing groove so that the first force - applying part applies force to the first force - receiving part.

[0031] 8. In Solution Eight and its preferred embodiments, the second paper - feeding mechanism is rotatably connected to the body and is provided with a second force - receiving part; the second pressing roller is installed on the second paper - feeding mechanism; the rotating member is also provided with a second force - applying part, and the second force - applying part is adapted to apply force to the second force - receiving part to make the second paper - feeding mechanism rotate;

[0032] When the rotating member is in the docking position, the second force - applying part applies force to the second force - receiving part to make the second pressing roller cooperate with the paper - feeding roller; when the rotating member is in the release position, the second force - applying part releases the second force - receiving part to allow the second pressing roller to disengage from the paper - feeding roller.

[0033] The working principle of the second paper - feeding mechanism is similar to that of the first paper - feeding mechanism. The rotating member can make both the first paper - feeding mechanism and the second paper - feeding mechanism be in the paper - feeding state and the paper - releasing state, realizing printing and clearing paper jams. It can be achieved only by operating one rotating member, and the operation is simpler.

[0034] 9. In Solution Nine and its preferred embodiments, the body is provided with a front paper - feeding channel. When the rotating member is in the docking position, the first paper - feeding mechanism and the body enclose a first channel, and the second paper - feeding mechanism and the body enclose a second channel. The front paper - feeding channel, the first channel, and the second channel are sequentially connected to form a paper - feeding channel. Since both the first pressing roller and the second pressing roller cooperate with the paper - feeding roller, the paper - feeding path can be increased or turned at the paper - feeding roller.

[0035] 10. In the tenth solution and its preferred embodiments, one of the first pressing roller and the first paper feeding mechanism is provided with a rotating shaft, and the other is provided with a runway hole. The rotating shaft is adapted to extend into the runway hole. Both ends of the biasing member act on the first paper feeding mechanism and the first pressing roller respectively to cause the first pressing roller to slide towards the paper feeding roller. Through the biasing member, the first pressing roller can adaptively change its own position. During the process of the first force application portion pressing the first force receiving portion, it is possible to prevent the situation that due to insufficient processing accuracy, the first pressing roller applies too much pressure to the paper feeding roller, resulting in damage. Moreover, during processing, the fitting accuracy of the corresponding parts does not need to be too high, which is convenient for processing. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for description in the embodiments. Obviously, the following drawings are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0037] Figure 1 Structural schematic diagram of the printer in Embodiment 1;

[0038] Figure 2 Assembly schematic diagram of the main body and the paper feeding roller in Embodiment 1;

[0039] Figure 3 Cooperating schematic diagram of the rotating member and the first paper feeding mechanism in Embodiment 1;

[0040] Figure 4 Enlarged schematic diagram of the part of the first force application portion and the first force receiving portion in Embodiment 1;

[0041] Figure 5 Assembly schematic diagram of the first paper feeding mechanism and the first pressing roller in Embodiment 1;

[0042] Figure 6 Cooperating schematic diagram of the rotating member and the second paper feeding mechanism in Embodiment 1;

[0043] Figure 7 Enlarged schematic diagram of the part of the second force application portion and the second force receiving portion in Embodiment 1.

[0044] MAIN REFERENCE NUMERAL DESCRIPTION:

[0045] Main body 1; Paper feeding roller 2; First paper feeding mechanism 3; First force receiving portion 31; Runway hole 32; First pressing roller 4; Rotating shaft 41; Rotating member 5; First force application portion 51; Second force application portion 52; Second paper feeding mechanism 6; Second force receiving portion 61; Rotating frame 62; Second pressing roller 7; Biasing member 8; Front paper feeding channel 91; First channel 92; Second channel 93. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0046] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are the preferred embodiments of the present invention and should not be regarded as excluding other embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0047] In the claims, the description and the above-mentioned accompanying drawings of the present invention, unless otherwise clearly defined, when using terms such as "first", "second" or "third", etc., are used to distinguish different objects and not for describing a specific order.

[0048] In the claims, the description and the above-mentioned accompanying drawings of the present invention, unless otherwise clearly defined, for orientation terms, when using terms such as "center", "horizontal", "vertical", "level", "vertical", "top", "bottom", "inner", "outer", "upper", "lower", "front", "rear", "left", "right", "clockwise", "counterclockwise", etc. to indicate the orientation or position relationship, it is based on the orientation and position relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, so it cannot be understood as limiting the specific protection scope of the present invention.

[0049] In the claims, the description and the above-mentioned accompanying drawings of the present invention, unless otherwise clearly defined, when using the terms "fixed connection" or "fixedly connected", should be understood in a broad sense, that is, any connection method without displacement relationship and relative rotation relationship between the two, that is, including non-detachable fixed connection, detachable fixed connection, being integrally connected, and being fixedly connected through other devices or elements.

[0050] In the claims, the description and the above-mentioned accompanying drawings of the present invention, when using terms such as "comprising", "having" and their variants, are intended to mean "including but not limited to".

[0051] Referring to Figures 1 - 7 , a printer includes a main body 1, a paper feed roller 2, a first paper feed mechanism 3, a first pressing roller 4, a rotating member 5, a second paper feed mechanism 6, a second pressing roller 7, and a biasing member 8.

[0052] The main body 1 is used to provide installation conditions for other parts, and the main body 1 is provided with a front paper feed channel 91.

[0053] Referring to Figure 2 , the paper feed roller 2 is installed on the main body 1. In this embodiment, the paper feed roller 2 is rotatably connected to the main body 1, and specifically, the two achieve rotation through shaft-hole cooperation.

[0054] The first paper feeding mechanism 3 is rotatably connected to the main body 1. To facilitate the description of the working principle of this embodiment, here, taking the first paper feeding mechanism 3 being adapted to be located at the first paper feeding position and the first paper loosening position as an example. In the actual use process, the first paper feeding position and the first paper loosening position can coincide with each other, only the force-bearing condition of the first paper feeding mechanism 3 changes, thus realizing the functions of paper feeding and paper loosening.

[0055] In this embodiment, Figure 3 when the first paper feeding mechanism 3 is located at the first paper feeding position, the first paper feeding mechanism 3 rotates counterclockwise from the first paper feeding position to the first paper loosening position. This operation can be achieved manually or automatically through components such as springs. The first paper feeding mechanism 3 is provided with a first force-bearing part 31, and the first force-bearing part 31 is adapted to be pressed when the rotating part 5 rotates, so as to make the first paper feeding mechanism 3 rotate. Refer to Figure 3 、 Figure 4 , in this embodiment, the first force-applying part 51 on the rotating part 5 is adapted to apply a force to the first force-bearing part 31 to make the first paper feeding mechanism 3 rotate; specifically, the first force-applying part 51 is adapted to directly press against the first force-bearing part 31, and by directly contacting the first force-bearing part 31, make the first paper feeding mechanism 3 rotate to the first paper feeding position. In this embodiment, one of the first force-applying part 51 and the first force-bearing part 31 is a pressing groove, and the other is a pressing protrusion. The pressing protrusion is adapted to abut against the groove wall of the pressing groove so that the first force-applying part 51 applies a force to the first force-bearing part 31. Specifically, the first force-applying part 51 is a pressing protrusion protruding towards the right, and the first force-bearing part 31 is a pressing groove with an opening facing the pressing protrusion. The groove wall of the pressing groove is arc-shaped so as to be abutted by the pressing protrusion.

[0056] Refer to Figure 4 、 Figure 5 , the first pressing roller 4 is installed on the first paper feeding mechanism 3 to follow the movement when the first paper feeding mechanism 3 rotates. And the first pressing roller 4 is adapted to rotate relative to the first paper feeding mechanism 3. Further, in this embodiment, the first pressing roller 4 is also adapted to slide relative to the first paper feeding mechanism 3. Specifically, one of the first pressing roller 4 and the first paper feeding mechanism 3 is provided with a rotating shaft 41, and the other is provided with a runway hole 32. The rotating shaft 41 is adapted to extend into the runway hole 32. The two ends of the biasing member 8 act on the first paper feeding mechanism 3 and the first pressing roller 4 respectively, so as to make the first pressing roller 4 slide towards the paper feeding roller 2 when the first paper feeding mechanism 3 is at the first paper feeding position, so that the first pressing roller 4 is as close as possible to or disengaged from the paper feeding roller 2 in the case of no paper.

[0057] The second paper feeding mechanism 6 is rotatably connected to the main body 1 and is adapted to be located at the second paper feeding position and the second paper loosening position, Figure 6In it, the second paper feeding mechanism 6 is located at the second paper feeding position, and the second paper feeding mechanism 6 rotates clockwise from the second paper feeding position to the second paper loosening position. The second rotating member 5 is provided with a second force receiving portion 61; the rotating member 5 is further provided with a second force applying portion 52, and the second force applying portion 52 is adapted to apply a force to the second force receiving portion 61 to rotate the second paper feeding mechanism 6; in this embodiment. Refer to Figure 6 、 Figure 7 , the second force applying portion 52 is adapted to press against the second force receiving portion 61, and at least one of the second force applying portion 52 and the second force receiving portion 61 has elasticity. Specifically, the second paper feeding mechanism 6 includes a rotating frame 62 and an elastic member installed on the rotating frame 62; the rotating frame 62 is rotatably connected to the main body 1 and is adapted to accommodate the second pressing roller 7. The elastic member rotates together with the rotating frame 62. In this embodiment, the elastic member is a wire spring and is located above the rotating frame 62, and the elastic member forms the second force receiving portion 61. The second force applying portion 52 presses against the second force receiving portion 61 from above to rotate the second paper feeding mechanism 6 counterclockwise to the second paper feeding position.

[0058] The second pressing roller 7 is installed on the rotating member 5 of the second paper feeding mechanism 6 to follow when the second paper feeding mechanism 6 rotates; in this embodiment, the second pressing roller 7 is rotatably connected to the rotating frame 62 to be adapted to rotate relative to the rotating frame 62.

[0059] The rotating member 5 is rotatably connected to the main body 1 and is adapted to be located at a docking position and a release position, Figure 3 、 Figure 6 In, the rotating member 5 is located at the docking position, and the rotating member 5 rotates counterclockwise from the docking position to the release position. When the rotating member 5 is located at the docking position, the rotating member 5 is fixedly connected to the main body 1. For example, when the rotating member 5 is adapted to rotate to the docking position, the rotating member 5 is fixedly connected to the main body 1 by at least one of magnetic connection, snap connection, adhesive connection, or screw connection. In addition to the above methods, other methods can also be used to achieve this.

[0060] Refer to Figure 1When the rotating member 5 rotates towards the docking position, the first paper feeding mechanism 3 is located at the first paper feeding position by the first force applying portion 51, and the second paper feeding mechanism 6 is located at the second paper feeding position by the second force applying portion 52. At this time, the first pressing roller 4 cooperates with the paper feeding roller 2 to realize paper feeding, and the second pressing roller 7 cooperates with the paper feeding roller 2 to realize paper feeding; the first paper feeding mechanism 3 and the main body 1 enclose a first channel 92, and the second paper feeding mechanism 6 and the main body 1 enclose a second channel 93. The first channel 92 and the second channel 93 are generally L-shaped, and the front paper feeding channel 91, the first channel 92, and the second channel 93 are sequentially connected to form a U-shaped paper feeding channel. In this embodiment, the rotating member 5 is the front cover. In other embodiments, the rotating member 5 can be an entity independent of the front cover, so that the docking position of the front cover corresponds to the working state. When the front cover is in the docking position, it is a closed cover, and at this time the printer can print. When the front cover is in the release position, it is an open cover, and at this time the printer can release the paper.

[0061] When the rotating member 5 is in the release position, the first force applying portion 51 releases the first force receiving portion 31, and the second force applying portion 52 releases the second force receiving portion 61, so as to allow the first paper feeding mechanism 3 to rotate to the first paper releasing position, and to allow the second paper feeding mechanism 6 to rotate to the second paper releasing position. At this time, the first pressing roller 4 is disengaged from the paper feeding roller 2, and the second pressing roller 7 is disengaged from the paper feeding roller 2. The paper between the first pressing roller 4 and the paper feeding roller 2 and the paper between the second pressing roller 7 and the paper feeding roller 2 are no longer clamped, facilitating the extraction of the paper.

[0062] Compared with the prior art, the present solution has the following beneficial effects:

[0063] In an exemplary embodiment, a printer includes a body 1, a paper feed roller 2, a first paper feed mechanism 3, a first pressure roller 4, and a rotating member 5. The paper feed roller 2 is mounted on the body 1 and is suitable for rotating relative to the body 1; the first paper feed mechanism 3 is rotatably connected to the body 1 and is provided with a first force-bearing portion 31; the rotating member 5 is rotatably connected to the body 1 and is provided with a first force-applying portion 51, and the first force-applying portion 51 is suitable for applying force to the first force-bearing portion 31 to rotate the first paper feed mechanism 3; the first pressure roller 4 is mounted on the first paper feed mechanism 3 to follow the rotation of the first paper feed mechanism 3; the rotating member 5 is in a parking position, and applies force to the first force-bearing portion 31 through the first force-applying portion 51, so that the first pressure roller 4 cooperates with the paper feed roller 2, at which time, the first pressure roller 4 and the paper feed roller 2 are close to each other, and the first pressure roller 4 and the paper feed roller 2 clamp the paper, and when one of them rotates in the forward direction, the other rotates in the reverse direction to loosen the paper. When the rotating member 5 is in the release position, the first force-applying portion 51 releases the first force-bearing portion 31 to allow the first pressing roller 4 to disengage from the paper feed roller 2. At this time, the distance between the first pressing roller 4 and the paper feed roller 2 can be increased, so that the paper between the two can be easily pulled out. When the rotating member 5 is in the parking position, it is fixedly connected to the body 1 to prevent the first paper feed mechanism 3 from being out of the working state and ensure stability during use. Through the above structure, paper feeding can be ensured and paper jams can be easily removed.

[0064] And in some cases of clearing paper jams, the position of the first paper feed mechanism 3 can remain unchanged (or only slightly rotate when pulling paper). Therefore, the relative positions of the first pressure roller 4 and the paper feed roller 2 are basically fixed, and there is no need to consider the movement alignment accuracy relative to the paper feed roller 2, which makes processing more convenient.

[0065] In an exemplary embodiment, the rotating member 5 is suitable for being magnetically connected, snap-connected, bonded, or screwed to the main body 1 when rotating in the parking position, and fixed connection is achieved through the corresponding structure. The above structure has mature technology and is easy to process.

[0066] In an exemplary embodiment, the first force-applying portion 51 is suitable for directly pressing the first force-bearing portion 31, thereby reducing the transmission structure therebetween, which is simple and convenient.

[0067] In an exemplary embodiment, one of the first force-applying portion 51 and the first force-bearing portion 31 is a pressing groove, and the other is a pressing protrusion, which is suitable for abutting against the groove wall of the pressing groove so that the first force-applying portion 51 applies force to the first force-bearing portion 31.

[0068] In an exemplary embodiment, the second paper feeding mechanism 6 is rotatably connected to the body 1, and is provided with a second force receiving portion 61; the second pressing roller 7 is mounted on the second paper feeding mechanism 6; the rotating member 5 is further provided with a second force applying portion 52, and the second force applying portion 52 is suitable for applying force to the second force receiving portion 61 to rotate the second paper feeding mechanism 6;

[0069] When the rotating member 5 is in the docking position, the second force application part 52 applies a force to the second force receiving part 61, so that the second pressing roller 7 cooperates with the paper feeding roller 2; when the rotating member 5 is in the release position, the second force application part 52 releases the second force receiving part 61 to allow the second pressing roller 7 to disengage from the paper feeding roller 2.

[0070] The working principle of the second paper feeding mechanism 6 is similar to that of the first paper feeding mechanism 3. The rotating member 5 can simultaneously make both the first paper feeding mechanism 3 and the second paper feeding mechanism 6 be in the paper feeding state and the paper loosening state, so as to realize printing and clearing paper jams. This can be achieved only by operating one rotating member 5, and the operation is simpler.

[0071] In an exemplary embodiment, the main body 1 is provided with a front paper feeding channel 91. When the rotating member 5 is in the docking position, the first paper feeding mechanism 3 and the main body 1 enclose a first channel 92, and the second paper feeding mechanism 6 and the main body 1 enclose a second channel 93. The front paper feeding channel 91, the first channel 92, and the second channel 93 are sequentially connected to form a paper feeding channel. Since both the first pressing roller 4 and the second pressing roller 7 cooperate with the paper feeding roller 2, the paper feeding path can be lengthened or turned at the paper feeding roller 2.

[0072] In an exemplary embodiment, one of the first pressing roller 4 and the first paper feeding mechanism 3 is provided with a rotating shaft 41, and the other of them is provided with a runway hole 32. The rotating shaft 41 is adapted to extend into the runway hole 32. The two ends of the biasing member 8 respectively act on the first paper feeding mechanism 3 and the first pressing roller 4 to make the first pressing roller 4 slide towards the paper feeding roller 2. Through the biasing member 8, the first pressing roller 4 can adaptively change its own position, preventing the situation that the first pressing roller 4 applies too much pressure to the paper feeding roller 2 due to insufficient machining accuracy during the process of the first force application part 51 pressing the first force receiving part 31, which may cause damage. Moreover, during processing, the corresponding matching accuracy does not need to be too high, which is convenient for processing.

[0073] In other embodiments, the structures of the first force application part 51 and the first force receiving part 31, and the structures of the second force application part 52 and the second force receiving part 61 can be the same and have corresponding effects to the structures.

[0074] In other embodiments, the first force application part 51 is adapted to be magnetically mutually exclusive with the first force receiving part 31 to apply a force to the first force receiving part 31. Compared with direct abutment, the machining accuracy does not need to be too high, and compared with hard abutment, this method has a certain buffering effect to prevent damage.

[0075] In other embodiments, the first force-applying portion 51 is adapted to press against the first force-receiving portion 31, and at least one of the first force-applying portion 51 and the first force-receiving portion 31 has elasticity. Specifically, similar to the structure of the second force-applying portion 52 and the second force-receiving portion 61 described above, the first paper feeding mechanism 3 includes a rotating frame 62 and an elastic member mounted on the rotating frame 62. The rotating frame 62 is rotatably connected to the main body 1 and is adapted to mount the first pressing roller 4; the elastic member forms the first force-receiving portion 31, and the first force-applying portion 51 is adapted to press against the first force-receiving portion 31. Compared with hard abutment, this method has a certain buffering effect to prevent damage; and it can compensate for certain machining errors.

[0076] In other embodiments, in addition to being rotatably connected to the main body 1, the paper feeding roller 2 can also slide relative to the main body 1 to change its position. For example, the runway hole 32 is designed between the upper first pressing roller 4 and the first paper feeding mechanism 3 to achieve the corresponding effect.

[0077] The descriptions of the above specification and embodiments are used to explain the protection scope of the present invention, but do not constitute a limitation to the protection scope of the present invention. Through the inspiration of the present invention or the above embodiments, those of ordinary skill in the art, in combination with common general knowledge, ordinary technical knowledge in the art and / or existing technologies, can obtain modifications, equivalent replacements or other improvements to the embodiments of the present invention or some of its technical features through logical analysis, reasoning or limited experiments, and all of them should be included within the protection scope of the present invention.

Claims

1. A printer, characterized in that: include ontology(1); A paper feed roller (2), which is mounted on the body (1) and is suitable for rotating relative to the body (1); A first paper feeding mechanism (3), which is rotatably connected to the main body (1) and is provided with a first force-bearing portion (31); A first pressing roller (4) mounted on the first paper feeding mechanism (3); and A rotating member (5) is rotatably connected to the body (1) and is suitable for being located at a parking position and a release position, and is provided with a first force-applying portion (51), wherein the first force-applying portion (51) is suitable for applying force to the first force-receiving portion (31) to rotate the first paper feeding mechanism (3); When the rotating member (5) is in the parking position, it is fixedly connected to the main body (1), and applies force to the first force-bearing portion (31) through the first force-applying portion (51), so that the first pressure roller (4) and the paper feed roller (2) cooperate; when the rotating member (5) is in the releasing position, the first force-applying portion (51) releases the first force-bearing portion (31), so as to allow the first pressure roller (4) and the paper feed roller (2) to disengage.

2. A printer as claimed in claim 1, characterized in that: The rotating member (5) is suitable for being magnetically connected, clamped, bonded or connected with the main body (1) by at least one of screws when rotating to a parking position.

3. A printer as claimed in claim 1, characterized in that: The first force-applying portion (51) is suitable for directly pressing the first force-receiving portion (31).

4. A printer as claimed in claim 1, characterized in that: The first force-applying portion (51) is suitable for magnetically repelling the first force-bearing portion (31) so as to apply force to the first force-bearing portion (31).

5. A printer as claimed in claim 1, characterized in that: The first force-applying portion (51) is suitable for pressing against the first force-receiving portion (31), and at least one of the first force-applying portion (51) and the first force-receiving portion (31) is elastic.

6. A printer as claimed in claim 1, characterized in that: The first paper feeding mechanism (3) comprises a rotating frame (62) and an elastic member mounted on the rotating frame (62); the rotating frame (62) is rotatably connected to the main body (1) and is suitable for mounting the first pressing roller (4); the elastic member forms the first force-bearing portion (31), and the first force-applying portion (51) is suitable for pressing the first force-bearing portion (31).

7. A printer as claimed in claim 1, characterized in that: One of the first force-applying portion (51) and the first force-bearing portion (31) is a pressing groove, and the other is a pressing protrusion, wherein the pressing protrusion is suitable for abutting against the groove wall of the pressing groove so that the first force-applying portion (51) applies force to the first force-bearing portion (31).

8. A printer as claimed in claim 1, characterized in that: It also comprises a second paper feeding mechanism (6) and a second pressing roller (7); the second paper feeding mechanism (6) is rotatably connected to the body (1) and is provided with a second force-bearing portion (61); the second pressing roller (7) is mounted on the second paper feeding mechanism (6); the rotating member (5) is also provided with a second force-applying portion (52), and the second force-applying portion (52) is suitable for applying force to the second force-bearing portion (61) to rotate the second paper feeding mechanism (6); When the rotating member (5) is in the parking position, the second force-applying portion (52) applies force to the second force-bearing portion (61), so that the second pressing roller (7) cooperates with the paper feed roller (2); when the rotating member (5) is in the releasing position, the second force-applying portion (52) releases the second force-bearing portion (61), so as to allow the second pressing roller (7) to disengage from the paper feed roller (2).

9. A printer as claimed in claim 8, characterized in that: The body (1) is provided with a front paper feeding channel (91); when the rotating member (5) is in a parked position, the first paper feeding mechanism (3) and the body (1) are combined to form a first channel (92); the second paper feeding mechanism (6) and the body (1) are combined to form a second channel (93); the front paper feeding channel (91), the first channel (92), and the second channel (93) are connected in sequence to form a paper feeding channel.

10. A printer according to any one of claims 1 to 9, characterized in that: It also includes a biasing member (8), one of the first pressing roller (4) and the first paper feeding mechanism (3) is provided with a rotating shaft (41), and the other of the two is provided with a runway hole (32), the rotating shaft (41) is suitable for extending into the runway hole (32), and the two ends of the biasing member (8) act on the first paper feeding mechanism (3) and the first pressing roller (4) respectively to make the first pressing roller (4) slide towards the paper feeding roller (2).

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