Connecting structure for hinging flip cover of printer and thermal printer thereof

Abstract

The utility model discloses a connecting structure for hinging a flip cover of a printer and a thermal printer thereof, the connecting structure comprises a base, a paper bin shell seat and a bin cover, and the bin cover is hinged on the paper bin shell seat in a turnover manner; the lower edge of the rear end of the bin cover extends downwards to be provided with two convex arc connecting blocks which are inserted into the edge of the rear end of the paper bin shell base and serve as hinge deflection fulcrums, and the rear end of the corresponding paper bin shell base is concavely provided with hinge connecting grooves matched with the two convex arc connecting blocks respectively; a rotating shaft hole is formed in each convex arc connecting block, and rotating shaft positioning holes are formed in the two sides of the inner wall of the corresponding hinge connecting groove respectively; a rotating shaft mounting groove which is communicated with the rotating shaft positioning holes in the two sides and is convenient for a rotating shaft for axially limiting and fixing the convex arc connecting block is upwards concavely formed in the lower edge of the rear end of the bin cover between the two hinged connecting grooves; the rotating shaft mounting groove is inserted from the rotating shaft positioning hole in one side and penetrates through the rotating shaft hole to be inserted into the rotating shaft positioning hole in the other side; and through a hidden connection limiting mode, the avoiding space is effectively saved, the structure is simple, and connection and installation are convenient.

Description

Technical Field

[0001] The utility model relates to the flip connection technology of a printer, in particular to a connection structure for hinge connection of a printer flip cover and a thermal printer.

Background Art

[0002] After the printer finishes printing the bill paper, it is necessary to open the cover for replacement and maintenance. Most of the existing cover opening structures of printers adopt the opening method of snap-fit and flipping. Due to structural and space limitations, in order to facilitate the flipping connection between the upper cover and the base, it is necessary to cut and avoid the space at the tail of the base or the upper cover. This will cause a relatively large gap to leak out at the tail, and the complex structure also makes the installation between the upper cover and the base not convenient enough and not easy to disassemble and assemble; at the same time, the snap connection at the front end of the upper cover, due to the tight snap and the very small opening size of the cover, makes it extremely time-consuming and laborious to open the cover, and it is extremely inconvenient to use. Even other tools are needed to open the paper bin cover, which is likely to cause damage to the cover opening structure.

[0003] For the above reasons, the existing cover flip structures of printers are usually composed of complex mechanism components, with numerous parts, complex structures, high costs, difficult installations, and high precision requirements for parts.

Content of the Utility Model

[0004] The utility model provides a connection structure for hinge connection of a printer flip cover and a thermal printer. Through a hidden connection and limiting method, the avoidance space is effectively saved, the structure is simple, the connection and installation are convenient, and the reliable sealing connection and hinge of the whole shell are effectively ensured.

[0005] The technical solution adopted by the utility model to solve its technical problems is as follows:

[0006] A connection structure for hinge connection of a printer flip cover, including a base, a paper bin shell seat and a bin cover. The paper bin shell seat is used to accommodate the roll paper required for printing and is installed on the base with the lower side supported;

[0007] The bin cover is flip-hinged on the paper bin shell seat and is used to cover the roll paper accommodated in the cavity;

[0008] Two convex arc connection blocks extending downward from the lower edge of the rear end of the bin cover are inserted into the rear edge of the paper bin shell seat and serve as hinge deflection fulcrums. Corresponding hinge connection grooves are recessed in the rear end of the paper bin shell seat and are respectively matched with the two convex arc connection blocks;

[0009] Each convex arc connection block is provided with a shaft hole, and on both sides of the inner wall of the corresponding hinge connection groove, shaft positioning holes coaxial with the shaft hole are respectively opened for axially limiting the installation of the convex arc connection block;

[0010] The lower edge of the rear end of the bin cover between the two hinge connection grooves is also provided with a downward concave rotation shaft installation groove that communicates with the rotation shaft positioning holes on both sides and is convenient for axially limiting and fixing the convex arc connection block. The rotation shaft is inserted from one rotation shaft positioning hole, passes through the rotation shaft hole, and is inserted into the rotation shaft positioning hole on the other side.

[0011] Preferably, on the inner side of the upper edge of the rear end of the base, two limiting rib plates are also provided protruding upward and inserted into the rotation shaft installation groove for laterally blocking the rotation shaft positioning holes to prevent the rotation shaft installed on the convex arc connection block from laterally moving axially.

[0012] Preferably, a torsion spring is also sleeved on the rotation shaft and located inside the rotation shaft hole of the convex arc connection block to drive the bin cover to open automatically.

[0013] Preferably, at the opening of the upper cover of the paper bin housing, an opening groove is recessed to facilitate opening the bin cover against the locking force.

[0014] Preferably, a buckle structure is provided on the inner wall of the bin cover corresponding to the opening groove and is matched with the docking part of the paper bin housing.

[0015] A thermal printer includes a connection structure for hinge connection of the printer flip cover as described above.

[0016] The beneficial effects of the present utility model are as follows:

[0017] During installation, two convex arc connection blocks extending downward from the lower edge of the rear end of the bin cover are inserted into the hinge connection grooves recessed at the rear end of the paper bin housing. Then, through the rotation shaft installation groove, the rotation shaft is inserted from one rotation shaft positioning hole, passes through the rotation shaft hole, and is inserted into the rotation shaft positioning hole on the other side, realizing the hinge connection of the two convex arc connection blocks at the rear end of the bin cover. Through the hidden connection and limiting method, within the limited installation space at the rear end of the bin cover, a closed connection at the hinge of the bin cover and the paper bin housing is achieved, effectively saving the avoidance space, ensuring the complete closed seal of the shell surface, and having a simple structure, convenient connection and installation, and ensuring stable and reliable hinge.

Description of the Drawings

[0018] Figure 1 is an exploded structural schematic diagram of the present utility model;

[0019] Figure 2 is a partial cross-sectional structural schematic diagram of the hinge of the paper bin housing in the present utility model;

[0020] Figure 3 is a three-dimensional structural schematic diagram of the assembled bin cover and paper bin housing in the present utility model;

[0021] Figure 4 is a rear-view partial cross-sectional structural schematic diagram of the assembled bin cover and paper bin housing in the present utility model;

[0022] Figure 5 This is a schematic diagram of the rear - view partial section structure after the assembly of the present utility model.

Specific Embodiment

[0023] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the protection scope of the present utility model.

[0024] A connection structure for the hinge of a printer flip - cover, which is applied to a thermal printer. As Figures 1 to 5 shown, it includes a base 1, a paper - bin shell base 2, and a bin cover 3. The paper - bin shell base 2 is used to accommodate the roll paper required for printing and is installed on the base 1 with its lower side supported. The bin cover 3 is flip - hinged on the paper - bin shell base 2 and is used to cover the roll paper accommodated in the cavity. At the lower edge of the rear end of the bin cover 3, two convex - arc connection blocks 4 are downwardly extended and inserted into the rear - end edge of the paper - bin shell base 2 as the hinge deflection fulcrums. Correspondingly, at the rear end of the paper - bin shell base 2, a concave - shaped hinge connection groove 5 is provided to cooperate with the two convex - arc connection blocks 4 respectively. Each convex - arc connection block 4 is provided with a rotating - shaft hole 40. On both sides of the inner wall of the corresponding hinge connection groove 5, rotating - shaft positioning holes 6 co - axial with the rotating - shaft hole 40 are respectively opened for the axial - limit installation of the convex - arc connection block 4. Between the two hinge connection grooves 5, at the lower edge of the rear end of the bin cover 3, a rotating - shaft installation groove 8 is upwardly concave - shaped and communicates with the rotating - shaft positioning holes 6 on both sides, facilitating the axial - limit fixation of the convex - arc connection block 4. A rotating shaft 7 is inserted from one - side rotating - shaft positioning hole 6 and passes through the rotating - shaft hole 40 and is inserted into the rotating - shaft positioning hole 6 on the other side. A torsion spring (not shown in the figure) that drives the bin cover 3 to open automatically is also sleeved on the rotating shaft 7 and located in the rotating - shaft hole 40 of the convex - arc connection block 4.

[0025] As Figure 1 and Figure 5 shown, on the inner side of the upper edge of the rear end of the base 1, two limiting rib plates 9 are upwardly convex and inserted into the rotating - shaft installation groove 8 to laterally block the rotating - shaft positioning holes 6 on the side to prevent the rotating shaft installed on the convex - arc connection block 4 from laterally moving axially. As Figure 1 and Figure 3 shown, at the open - top position of the paper - bin shell base 2, an opening - cover slot 10 is concave - shaped to facilitate opening the bin cover 3 against the locking force. A snap - fit structure (not shown in the figure) that cooperates with the docking part of the paper - bin shell base 2 is provided on the inner wall of the bin cover 3 corresponding to the opening - cover slot 10.

[0026] During installation, two convex arc connecting blocks 4 extending downward from the lower edge of the rear end of the bin cover 3 are inserted into the hinge connecting grooves 5 recessed at the rear end of the paper bin housing base 2. Then, through the rotating shaft installation groove 8, the rotating shaft 7 is inserted from one side rotating shaft positioning hole 6 and passes through the rotating shaft hole 40 and is inserted into the rotating shaft positioning hole 6 on the other side, and the two rotating shafts respectively axially limit the convex arc connecting blocks 4 inward to realize the hinge connection of the two convex arc connecting blocks 4 at the rear end of the bin cover 3. Then, when the paper bin housing base 2 is installed on the base 1, the two limiting rib plates are inserted into the rotating shaft installation groove 8 to block the rotating shaft positioning holes 6 from the side, preventing the rotating shaft installed on the convex arc connecting block 4 from laterally moving axially, and effectively limiting and connecting the rotating shaft.

[0027] The above-described embodiments are only preferred embodiments of the present invention, and do not limit the scope of implementation of the present invention. Any equivalent changes made according to the shape, structure, and principle of the present invention should be covered within the protection scope of the present invention.

Claims

1. A connection structure for hinged connection of a printer cover, characterized in that: It includes a base, a paper bin shell seat and a bin cover, wherein the paper bin shell seat is used to accommodate the roll paper required for printing, and the lower side support is installed on the base; The bin cover is flip-hinged on the paper bin shell seat and is used to cover the roll paper contained in the cavity; The lower edge of the rear end of the bin cover is extended downwardly and is provided with two convex arc connecting blocks inserted at the rear end edge of the paper bin shell seat and serving as hinged deflection fulcrums, and the corresponding rear end depression of the paper bin shell seat is provided with hinged connecting grooves respectively matched with the two convex arc connecting blocks; Each of the convex circular arc connecting blocks is provided with a rotating shaft hole, and both sides of the inner wall of the corresponding hinged connecting groove are respectively provided with rotating shaft positioning holes coaxial with the rotating shaft hole and used for axially limiting installation of the convex circular arc connecting block; The lower edge of the rear end of the bin cover between the two hinged connection grooves is also recessed upward and is provided with a shaft mounting groove that is connected to the shaft positioning holes on both sides and is convenient for inserting the shaft for axially limiting and fixing the convex arc connection block from the shaft positioning hole on one side and passing through the shaft hole to be inserted into the shaft positioning hole on the other side.

2. A connection structure for hinged connection of a printer cover according to claim 1, characterized in that: The inner side of the upper edge of the rear end of the base is also protruding upward and is provided with two limiting ribs inserted in the rotating shaft installation groove, which are used to laterally block the rotating shaft positioning hole to prevent the rotating shaft installed on the convex arc connecting block from lateral displacement along the axial side.

3. The connection structure for hinged connection of a printer cover according to claim 1, characterized in that: The rotating shaft is also provided with a torsion spring which is located in the rotating shaft hole of the convex arc connecting block and drives the bin cover to open automatically.

4. The connection structure for hinged connection of a printer cover according to claim 1, characterized in that: The cover opening position on the paper bin shell seat is recessed and provided with a cover opening notch for overcoming the locking force to open the bin cover.

5. The connection structure for hinged connection of a printer cover according to claim 4, characterized in that: The inner wall of the bin cover corresponding to the cover opening notch is provided with a snap-fit ​​structure matched with the docking position of the paper bin shell seat.

6. A thermal printer, characterized in that: It comprises a connection structure for hinged connection of a printer cover as claimed in any one of claims 1 to 5.

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