Printer core easy to disassemble and assemble and printer

Abstract

The utility model discloses a printer core easy to disassemble and assemble and a printer, and the printer core is detachably installed in an installation groove of a housing of the printer. The printing head is movably installed on the support through a force application part and provided with a circuit board, the first electric connection part is fixedly arranged on the support and located at the lower portion of the printing head, and the first electric connection part is electrically connected with the circuit board through a flexible circuit. The printer comprises a machine shell internally provided with a mounting groove, a control main board arranged in the machine shell and a second electric connection part arranged in the mounting groove and electrically connected with the control main board, and the second electric connection part is configured to be matched with the first electric connection part. The printer core is separably arranged in the mounting groove and is configured to enable the first electric connection part and the second electric connection part to be connected when the printer core is mounted in the mounting groove, and the first electric connection part is separated from the second electric connection part when the printer core is removed from the mounting groove. The utility model has the advantage that the printer core is easy to maintain and replace.

Description

Technical Field

[0001] The utility model relates to the technical field of printers, and particularly relates to a printer core which is easy to disassemble and assemble and a printer with the printer core. Background Art

[0002] A core installation groove is arranged inside the casing of the printer. The connection flexible cable (i.e., FPC) of the core needs to be connected to the main board, and the main board is installed in the installation space inside the casing. The installation space and the core installation groove are separated by the casing. The end of the FPC needs to pass through the hole on the casing and be inserted into the connector on the main board, and then different parts of the casing are assembled. When disassembling, it is necessary to disassemble the casing and then remove the end of the FPC from the connector, and the disassembly and assembly of the core are not convenient. When a printer core failure occurs during frequent printing operations of the printer, the entire casing needs to be removed, and the maintenance and replacement operations of the printer core are more cumbersome and time-consuming. Especially in some financial tax control fields, the casing of the printer sometimes has some anti-disassembly structures, making the maintenance and replacement of the printer core particularly difficult. Summary of the Utility Model

[0003] In order to solve the above technical problems, the purpose of the utility model is to provide an easily disassembled and assembled printer core that is convenient for maintenance and replacement and a printer with the printer core.

[0004] On the one hand, the utility model provides an easily disassembled and assembled printer core, which is detachably installed in an installation groove inside the casing of the printer. The printer core includes: a bracket, provided with a rubber roller groove for installing a rubber roller on the bracket in a manner that can be loaded and unloaded; a print head, movably installed on the bracket, and the print head has a circuit board; a force-applying member, which is between the bracket and the print head and applies force to the print head towards the rubber roller so that the print head is pressed against the rubber roller; a first electrical connection part, fixedly arranged on the bracket, and the first electrical connection part is electrically connected to the circuit board through a flexible circuit; the first electrical connection part is configured to be electrically connected to a second electrical connection part inside the casing when the printer core is inserted into the installation groove, and is configured to be disconnected from the second electrical connection part when the printer core is removed from the installation groove.

[0005] According to an embodiment of the utility model, the printer core includes a positioning member arranged on the bracket. The positioning member surrounds and forms a receiving groove for receiving the first electrical connection part. One end of the positioning member away from the bracket is higher than one end of the first electrical connection part away from the bracket; the positioning member is configured to be positioned and cooperate with a first positioning part on the casing so that the first electrical connection part can be aligned and inserted into the second electrical connection part.

[0006] According to an embodiment of the present utility model, the printer core includes a clamping member connected within the positioning member. The positioning member has a clamping portion, and the clamping member and the clamping portion jointly clamp and fix the first electrical connection portion in the receiving groove.

[0007] According to an embodiment of the present utility model, the printer core includes a flexible FPC circuit board and a reinforcing member. The flexible circuit is defined by the flexible FPC circuit board. One end of the flexible FPC circuit board is fixedly arranged at the reinforcing member and jointly defines the first electrical connection portion with the reinforcing member. The other end of the flexible FPC circuit board is electrically connected to the circuit board.

[0008] According to an embodiment of the present utility model, the positioning member is detachably connected to the bracket. The receiving groove penetrates through the positioning member, and the clamping member is inserted into the receiving groove from one end of the receiving groove close to the bracket.

[0009] On the other hand, the present utility model further provides a printer, including: a housing with an installation groove internally configured; a control main board arranged within the housing; a second electrical connection portion corresponding to the installation groove and arranged on the housing and electrically connected to the control main board. The second electrical connection portion is configured to be adapted to the first electrical connection portion; the printer core according to any one of the foregoing technical solutions, detachably installed in the installation groove. The printer core is configured such that when the printer core is inserted into the installation groove, the first electrical connection portion is electrically connected to the second electrical connection portion; when the printer core is removed from the installation groove, the first electrical connection portion is disengaged from the second electrical connection portion.

[0010] According to an embodiment of the present utility model, a first positioning portion is provided on the inner bottom wall of the installation groove; during the process of the printer core being inserted into the installation groove, at least two outer side surfaces of the printer core are respectively in positioning cooperation with at least two inner side surfaces of the installation groove so that the positioning member can be aligned and inserted with the first positioning portion. At least two of the at least two outer side surfaces are not parallel to each other, and the outer side surfaces are parallel to the insertion direction of the printer core; the positioning member is in plug-in positioning cooperation with the first positioning portion so that the first electrical connection portion can be aligned and inserted with the second electrical connection portion.

[0011] According to an embodiment of the present utility model, the first positioning portion is a positioning hole / slot opened on the inner bottom wall of the installation slot, the second electrical connection portion is located in the positioning hole / slot, and the second electrical connection portion has a second positioning portion and a slot for the first electrical connection portion to be inserted; the positioning member is inserted and positioned in cooperation with the positioning hole / slot so that the second positioning portion can be aligned and inserted with the receiving slot; the second positioning portion is inserted and positioned in cooperation with the receiving slot so that the first electrical connection portion can be aligned and inserted with the second electrical connection portion.

[0012] According to an embodiment of the present utility model, a guiding inclined surface is provided at the entrance of the positioning hole / slot, and a first guiding inclined surface is provided on the outer peripheral side of the lower end portion of the positioning member; a second guiding inclined surface is provided at the notch of the receiving slot and is matched with the outer surface of the second positioning portion.

[0013] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0014] The printer core fixedly arranges a first electrical connection portion on the bracket and electrically connects the first electrical connection portion to the circuit board of the print head through a flexible circuit. When the printer core is installed and inserted into the installation slot in the printer housing, the first electrical connection portion can be electrically connected to the second electrical connection portion provided corresponding to the installation slot on the housing, facilitating the quick connection between the first electrical connection portion of the printer core and the second electrical connection portion connected to the control main board in the housing; and when the printer core is removed from the installation slot, the first electrical connection portion is separated from the second electrical connection portion, thus facilitating the disassembly and assembly of the printer core. The printer with this printer core has the advantages of being convenient for maintenance and replacement of the printer core. Description of the Drawings

[0015] Figure 1 is a perspective view of the printer core of a printer according to an embodiment of the present utility model separated from the printer housing;

[0016] Figure 2 is Figure 1 a perspective view of the printer core shown in [reference numeral] being disconnected from the control main board in the printer housing;

[0017] Figure 3 is Figure 2 a perspective view of the printer core shown in [reference numeral];

[0018] Figure 4 is Figure 3 a perspective view of looking at the printer core from a bottom-up perspective as shown in [reference numeral];

[0019] Figure 5 is Figure 3 a sectional structure view of the printer core shown in [reference numeral];

[0020] Figure 6 isFigure 5 Partial enlarged view at position A shown in

[0021] Figure 7 is Figure 2 Cross-sectional view showing that after at least a part of the outer side surface of the printer core shown in is positioned and fitted with at least a part of the inner wall surface of the installation groove of the housing, the positioning member of the printer core is aligned with the positioning groove;

[0022] Figure 8 is Figure 7 Cross-sectional view showing that after the guiding inclined surface of the positioning groove on the inner bottom wall of the installation groove of the housing shown in is guidingly fitted with the first guiding inclined surface on the outer peripheral side of the lower end part of the positioning member of the printer core, the positioning member is guided and positioned into the positioning groove along the first guiding inclined surface;

[0023] Figure 9 is Figure 8 Cross-sectional view showing that after the outer surface of the positioning block where the second electrical connection part is located in the installation groove of the housing shown in is guidingly fitted with the second guiding inclined surface on the inner peripheral side of the lower end part of the positioning member of the movement, the second electrical connection part is guided and positioned into the receiving groove along the second guiding inclined surface;

[0024] Figure 10 is Figure 9 Cross-sectional view showing that the positioning block provided with the second electrical connection part shown in enters the receiving groove of the positioning member of the printer core and the first electrical connection part and the second electrical connection part are inserted into each other;

[0025] Figure 11 is Figure 10 Cross-sectional view showing that after the first electrical connection part of the printer core shown in is inserted into the second electrical connection part connected to the control main board in the housing;

[0026] Wherein the reference numerals are as follows:

[0027] 100, Printer;

[0028] 10, Printer core; 11, Bracket; 111, Front side; 112, Rear side; 113, Left side; 114, Right side; 115, Bottom wall; 116, Rubber roller groove; 12, Print head; 121, Elastic member; 13, Circuit board; 14, First electrical connection part; 141, Flexible FPC circuit board; 1411, First end; 1412, Second end; 15, Positioning member; 150, Receiving groove; 151, First guiding inclined surface; 152, Second guiding inclined surface; 16, Clamping member; 17, Reinforcing member;

[0029] 20. Body; 21. Housing; 210. Installation groove; 211. Front wall surface; 212. Rear wall surface; 213. Left wall surface; 214. Right wall surface; 215. Bottom wall surface; 220. Positioning groove; 221. Guiding inclined surface; 23. Positioning block; 24. Control main board; 25. Second electrical connection part; 26. Rubber roller. Detailed implementation manner

[0030] It is easy to understand that according to the technical solution of the present invention, without changing the essential spirit of the present invention, those of ordinary skill in the art can propose various interchangeable structural forms and implementation manners. Therefore, the following detailed implementation manners and the accompanying drawings are only exemplary descriptions of the technical solution of the present invention, and should not be regarded as the whole of the present invention or as a limitation or restriction on the technical solution of the present invention.

[0031] According to Figures 1 to 5 As shown, an embodiment of the present invention provides a printer 100, which includes a printer core 10 and a body 20. Among them, the printer core 10 includes a bracket 11, a print head 12, a force application member 121, and a first electrical connection part 14. The bracket 11 is provided with a rubber roller groove 116 for the rubber roller 26 to be installed on the bracket 11 in a detachable manner. The print head 12 is movably connected to the bracket 11. The print head 12 has a circuit board 13. The force application member 121 is between the bracket 11 and the print head 12. The force application member 121 applies a force to the print head 12 towards the rubber roller 26 so that the print head 12 is pressed against the rubber roller 26. The first electrical connection part 14 is fixedly arranged on the bracket 11 and is located at the lower position of the print head 12. The first electrical connection part 14 is electrically connected to the circuit board 13 through a flexible circuit. In this embodiment, the print head 12 is specifically a thermal print head. The force application member 121 can be a spring. The flexible circuit is defined by a part of a flexible FPC circuit board 141. The circuit board 13 uses a PCB board (i.e., a printed circuit board). In other embodiments, the force application member 121 can also adopt elastic members such as shrapnel, and the flexible circuit can also adopt other flexible conductors such as flexible cables, flat cables, and flexible wire harnesses, which are not specifically limited.

[0032] According to Figure 6 As shown, to facilitate a good protection effect on the first electrical connection part 14, the printer core 10 includes a positioning member 15 detachably connected to the bracket 11. The positioning member 15 defines a receiving groove 150 for receiving the first electrical connection part 14. In this embodiment, the positioning member 15 is locked to the lower part of the bracket 11 by screws. In other embodiments, the positioning member 15 can also be snap-connected to the lower part of the bracket 11, or the positioning member 15 is connected to the bracket 11 by means of insertion, or the positioning member 15 can also be integrally formed with the bracket 11, which is not specifically limited.

[0033] Combined withFigure 1 As shown in the figure, the machine body 20 includes a housing 21, a control main board 24, and a second electrical connection portion 25. Among them, the interior of the housing 21 is structured with an installation groove 210 and an installation space (not shown in the figure) that are isolated from each other. The control main board 24 is installed in the installation space of the housing 21. The second electrical connection portion 25 is arranged at the bottom of the installation groove 210 and is electrically connected to the control main board 24. The second electrical connection portion 25 is configured to be adapted to the first electrical connection portion 14. The printer core 10 is detachably installed in the installation groove 210 of the housing 21. When the printer core 10 is installed and inserted into the installation groove 210 of the housing 21, the first electrical connection portion 14 of the printer core 10 is connected to the second electrical connection portion 25 inside the housing 21, facilitating the quick connection of the first electrical connection portion 14 of the printer core 10 to the second electrical connection portion 25 that is connected to the control main board 24 inside the housing 21. When the printer core 10 is removed from the installation groove 210 of the housing 21, the first electrical connection portion 14 of the printer core 10 is disengaged from the second electrical connection portion 25 inside the housing 21, thus facilitating the disassembly and assembly of the printer core 10. A printer having this printer core 10 has the advantages of being easy to maintain and replace the printer core 10.

[0034] In this embodiment, the opening of the installation groove 210 faces upward. Both the first electrical connection portion 14 and the positioning member 15 are arranged at the bottom of the bracket 11, and the printer core 10 is installed and inserted into the installation groove 210 from top to bottom. In other embodiments, the printer core 10 can also be configured to be inserted into the installation groove 210 of the housing 21 along other directions intersecting the up-and-down direction, such as the horizontal direction, the inclined direction, etc. In these embodiments, the first electrical connection portion 14 can be adjusted to be arranged on one side of the bracket 11, so as to meet the requirement that the first electrical connection portion 14 of the printer core 10 and the second electrical connection portion 25 of the machine body 20 are inserted in a preset direction.

[0035] It should be noted that in combination with Figure 1 、 Figure 5 As shown in the figure, in order to facilitate the positioning of the first electrical connection portion 14 on the printer core 10 and the second electrical connection portion 25 inside the housing 21 for subsequent docking. In this embodiment, the installation groove 210 is arranged inside the housing 21. A first positioning portion is provided on the inner bottom wall of the installation groove 210. The positioning member 15 of the printer core 10 is used for positioning and cooperating with the first positioning portion inside the housing 21 of the machine body 20 so that the first electrical connection portion 14 can be aligned and inserted with the second electrical connection portion 25. Among them, the first positioning portion is a positioning groove 220 opened on the inner bottom wall of the installation groove 210. The second electrical connection portion 25 is located in the positioning groove 220. A guiding inclined surface 221 is arranged circumferentially at the opening of the positioning groove 220. A first guiding inclined surface 151 that cooperates with the guiding inclined surface 221 is provided on the outer peripheral side of the lower end portion of the positioning member 15 of the printer core 10. In other embodiments, the first positioning portion can also be configured as a positioning hole, and specific details are not limited.

[0036] In this embodiment, a receiving groove 150 for receiving the first electrical connection portion 14 is formed by surrounding with a positioning member 15, and the end of the positioning member 15 away from the bracket 11 protrudes from the bracket 11 higher than the end of the first electrical connection portion 14 away from the bracket 11 protruding from the bracket 11, so that the first electrical connection portion 14 is surrounded in the receiving groove 150, which can prevent the first electrical connection portion 14 from being bent or damaged due to accidental external force during the production or transportation of the printer core 10. Therefore, the positioning member 15 not only plays a positioning role, but also can better protect the first electrical connection portion 14. Taking Figure 5 or Figure 6 the direction shown in as an example, the end of the positioning member 15 away from the bracket 11 protrudes downward from the bracket 11 higher than the end of the first electrical connection portion 14 away from the bracket 11 protruding downward from the bracket 11.

[0037] To facilitate fixing the first electrical connection portion 14 in the receiving groove 150 of the positioning member 15, the printer core 10 includes a clamping member 16 detachably connected to the positioning member 15, and the clamping member 16 and the positioning member 15 jointly clamp the first electrical connection portion 14 at the middle position of the receiving groove 150. In this embodiment, the clamping member 16 is snap-connected to the positioning member 15 through an elastic hook. In other embodiments, the connection structure between the clamping member 16 and the positioning member 15 can also be adhesive connection, clearance fit or screw connection, which is not specifically limited.

[0038] In this embodiment, the positioning member 15 has a clamping portion, and the clamping portion is a step formed in the receiving groove 150. The clamping member 16 and the clamping portion of the positioning member 15 jointly clamp and fix the first electrical connection portion 14 in the receiving groove 150.

[0039] In this embodiment, refer to Figure 5 、 Figure 6, the flexible FPC circuit board 141 has opposite first and second ends 1411 and 1412. Among them, the first end 1411 is fixedly joined to a reinforcing member 17, and the two jointly define the first electrical connection portion 14. The second end 1412 of the flexible FPC circuit board 141 is electrically connected to the circuit board 13 on the print head 12. In the flexible FPC circuit board 141, the middle portion between the first end 1411 and the second end 1412 will form a flexible circuit for electrically connecting the first electrical connection portion 14 and the circuit board 13. The second electrical connection portion 25 is a connector, which has a slot (not marked in the figure) for the first electrical connection portion 14 to be inserted. The first electrical connection portion 14 of this embodiment is jointly defined by one end of the flexible FPC circuit board 141 and the reinforcing member 17, and the clamping member 16 and the clamping portion of the positioning member 15 jointly clamp and fix the first electrical connection portion 14 in the receiving groove 150; this design structure is relatively simple and convenient for assembly. In other embodiments, it is also possible that the first electrical connection portion 14 is the connector slot end, the second electrical connection portion 25 is the gold finger card end, or one of the first electrical connection portion 14 and the second electrical connection portion 25 can be a male connector and the other can be a female connector, which is not specifically limited.

[0040] In this embodiment, the positioning member 15 is detachably connected to the bracket 11. The receiving groove 150 penetrates the positioning member 15 longitudinally. The clamping member 16 is inserted into the receiving groove 150 from one end of the receiving groove 150 close to the bracket 11 to clamp and fix the first electrical connection portion 14, and then the positioning member 15 equipped with the clamping member 16 and the first electrical connection portion 14 is installed and fixed on the bracket 11, so as to facilitate the assembly of the clamping member 16 and the fixing of the first electrical connection portion 14.

[0041] In this embodiment, referring to Figures 1 to 11 As shown, during the process of inserting the printer core 10 into the installation groove 210, at least two outer sides of the printer core 10 are respectively in positioning cooperation with at least two inner sides of the installation groove 210 so that the positioning member 15 can be aligned and inserted with the first positioning portion. At least two of the aforementioned at least two outer sides of the printer core 10 are not parallel to each other. The outer side of the printer core 10 for positioning cooperation with the inner side of the installation groove 210 is parallel to the insertion direction of the printer core 10 into the installation groove 210; the positioning member 15 is inserted and positioned in cooperation with the first positioning portion so that the first electrical connection portion 14 can be aligned and inserted with the second electrical connection portion 25, thereby realizing the rapid and accurate positioning of the printer core 10 when it is inserted into the installation groove 210 in the housing 21. When the printer core 10 is installed, the first electrical connection portion 14 and the second electrical connection portion 25 are quickly and accurately inserted, and further realizing the rapid disassembly and assembly of the printer core 10.

[0042] Specifically, in this embodiment, referring to Figure 1 and Figure 7As shown, when installing the printer core 10 into the installation slot 210 of the housing 21, the rear side 112 of the printer core 10 is in positioning fit with the rear wall surface 212 of the installation slot 210, the left side 113 of the printer core 10 is in positioning fit with the left wall surface 213 of the installation slot 210, and the right side 114 of the printer core 10 is in positioning fit with the right wall surface 214 of the installation slot 210. Thus, the printer core 10 is preliminarily positioned into the installation slot 210 of the housing 21 so that the positioning member 15 can be aligned and inserted into the first positioning portion. Of course, in other embodiments, it may also be that only the left side 113 of the printer core 10 is in positioning fit with the left wall surface 213 of the installation slot 210, and the rear side 112 and the front side 111 of the printer core 10 are respectively in positioning fit with the rear wall surface 212 and the front wall surface 211 of the installation slot 210; or, it may also be that only the right side 114 of the printer core 10 is in positioning fit with the right wall surface 214 of the installation slot 210, and the rear side 112 of the printer core 10 is in positioning fit with the rear wall surface 212 of the installation slot 210. Similarly, the printer core 10 can also be preliminarily positioned into the installation slot 210 of the housing 21 so that the positioning member 15 can be aligned and inserted into the first positioning portion. The specific implementation manner is not limited thereto.

[0043] According to Figure 8 As shown, after completing Figure 7 the preliminary positioning by installing the printer core 10 shown in the figure into the installation slot 210 of the housing 21, the user can guide and position the positioning member 15 along the first guiding inclined surface 151 on the positioning member 15 of the printer core 10 into the positioning slot 220 of the housing 21.

[0044] According to Figure 9 As shown, further, to facilitate the further positioning of the first electrical connection portion 14 on the printer core 10 and the second electrical connection portion 25 in the housing 21 for easy docking. The second electrical connection portion 25 has a second positioning portion. The positioning member 15 is inserted and positioned in the positioning slot 220 so that the second positioning portion can be aligned and inserted into the receiving slot 150; the second positioning portion is inserted and positioned in the receiving slot 150 so that the first electrical connection portion 14 can be aligned and inserted into the second electrical connection portion 25.

[0045] Refer to Figure 9 As shown, in this embodiment, the second positioning portion is a positioning block 23 provided on the second electrical connection portion 25. A second guiding inclined surface 152 that cooperates with the outer surface of the positioning block 23 is provided on the inner peripheral side at the lower end slot opening of the receiving slot 150 on the positioning member 15. The user can guide and position the second electrical connection portion 25 along the second guiding inclined surface 152 on the positioning member 15 of the printer core 10 into the receiving slot 150, so that the slots of the first electrical connection portion 14 and the second electrical connection portion 25 are aligned, facilitating the quick insertion of the first electrical connection portion 14 and the second electrical connection portion 25.

[0046] According to Figure 10 、 Figure 11 as shown, after completing the three-positioning in Figures 7 to 9 (that is, the first positioning of the printer core 10 into the installation groove 210 of the machine case 21 shown in Figure 7 , the second positioning of the positioning member 15 of the printer core 10 to the positioning groove 220 of the machine case 21 shown in Figure 8 , and the third positioning of the positioning block 23 on the second electrical connection part 25 positioned into the receiving groove 150 shown in Figure 9 ), the user can accurately insert the first electrical connection part 14 of the printer core 10 into the second electrical connection part 25 of the machine case 21 to achieve the electrical connection between the printer core 10 and the control main board 24 on the machine body 20. When the printer core 10 and the first electrical connection part 14 are inserted in place, the bottom wall 115 of the printer core 10 is in limit fit with the bottom wall surface 215 of the installation groove 210.

[0047] The technical scope of the present utility model is not limited to the content in the above description. Those skilled in the art can make various deformations and modifications to the above embodiments without departing from the technical idea of the present utility model, and these deformations and modifications should all fall within the protection scope of the present utility model.

Claims

1. An easily detachable printer mechanism, which can be detachably installed in a mounting slot in a printer casing, characterized in that: The printing mechanism comprises: A bracket, provided with a rubber roller groove for the rubber roller to be mounted on the bracket in a detachable manner; A print head, movably mounted on the bracket, wherein the print head has a circuit board; a force-applying component, which is interposed between the bracket and the print head and applies force to the print head toward the rubber roller so that the print head is pressed against the rubber roller; A first electrical connection portion is fixedly arranged on the bracket, and the first electrical connection portion is electrically connected to the circuit board through a flexible circuit; the first electrical connection portion is constructed to be suitable for being electrically connected to the second electrical connection portion in the casing when the printer movement is installed and inserted into the installation slot, and is constructed to be disengaged from the second electrical connection portion when the printer movement is removed from the installation slot.

2. The printer mechanism according to claim 1, characterized in that: The printing mechanism includes a positioning piece arranged on the bracket, the positioning piece is surrounded by a receiving groove for receiving the first electrical connection part, and the end of the positioning piece away from the bracket is higher than the end of the first electrical connection part away from the bracket; the positioning piece is constructed to be suitable for positioning and cooperating with the first positioning part on the casing so that the first electrical connection part can be aligned and plugged with the second electrical connection part.

3. The printer mechanism according to claim 2, characterized in that: The printer mechanism comprises a clamping member connected to the positioning member, the positioning member has a clamping portion, and the clamping member and the clamping portion together clamp and fix the first electrical connection portion in the receiving groove.

4. The printer mechanism according to claim 3, characterized in that: The printing mechanism includes a flexible FPC circuit board and a reinforcement, the flexible circuit is defined by the flexible FPC circuit board, one end of the flexible FPC circuit board is fixedly arranged at the reinforcement and defines the first electrical connection part together with the reinforcement, and the other end of the flexible FPC circuit board is electrically connected to the circuit board.

5. The printer mechanism according to claim 3 or 4, characterized in that: The positioning member is detachably connected to the bracket, the receiving groove passes through the positioning member, and the clamping member is installed and inserted into the receiving groove at one end of the receiving groove close to the bracket.

6. A printer, characterized in that: include: A housing having an internal structure with a mounting slot; A control mainboard is arranged in the casing; A second electrical connection portion, which is disposed on the housing corresponding to the mounting slot and is electrically connected to the control mainboard, and the second electrical connection portion is configured to match the first electrical connection portion; The printer movement described in any one of claims 1 to 5 is detachably installed in the installation groove, and the printer movement is constructed as follows: when the printer movement is installed and inserted into the installation groove, the first electrical connection part is electrically connected to the second electrical connection part; when the printer movement is removed from the installation groove, the first electrical connection part is disengaged from the second electrical connection part.

7. The printer according to claim 6, characterized in that: A first positioning portion is provided on the inner bottom wall of the installation groove; during the process of installing and inserting the printer movement into the installation groove, at least two outer side surfaces of the printer movement are respectively positioned and matched with at least two inner side surfaces of the installation groove so that the positioning member can be aligned and plugged with the first positioning portion, at least two of the at least two outer side surfaces are not parallel, and the outer side surfaces are parallel to the insertion direction of the printer movement; the positioning member is plugged and positioned with the first positioning portion so that the first electrical connection portion can be aligned and plugged with the second electrical connection portion.

8. The printer according to claim 7, characterized in that: The first positioning portion is a positioning hole / groove provided on the inner bottom wall of the mounting groove, the second electrical connection portion is located in the positioning hole / groove, and the second electrical connection portion has a second positioning portion and a slot for inserting the first electrical connection portion; the positioning member is plugged and positioned with the positioning hole / groove so that the second positioning portion can be plugged in and aligned with the receiving groove; the second positioning portion is plugged and positioned with the receiving groove so that the first electrical connection portion can be plugged in and aligned with the second electrical connection portion.

9. The printer according to claim 8, characterized in that: A guiding slope is arranged at the entrance of the positioning hole / groove, a first guiding slope is arranged on the outer peripheral side of the lower end of the positioning member, and a second guiding slope matching with the outer surface of the second positioning portion is arranged at the notch of the receiving groove.

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