CN220198903U - Cutter protecting device for printer - Google Patents

Abstract

The utility model relates to the field of printers and discloses a cutter protecting device for a printer, which comprises a printer box body part and a flip part, wherein the flip part is provided with a paper cutting component and a locking piece component, an unlocking part is arranged on the upper surface of the box body, the locking piece component comprises the locking piece component and a torsion elastic piece, the locking piece component is rotatably arranged in the flip, the torsion elastic piece applies torsion force to the locking piece component, when the cover is opened, the locking piece component rotates to a paper cutting component movement path under the action of the torsion force, the paper cutting component is prevented from being cut, when the cover is closed, the unlocking part is contacted with the locking piece component, so that the locking piece component can twist and move out of the paper cutting component movement path, and the paper cutting component can be cut normally. The utility model adopts the design of long and short shafts, has small driving stroke, can reduce failure rate, and has high device efficiency and safety performance.

Description

Cutter protecting device for printer

Technical Field

The utility model relates to the field of printers, in particular to a manual pressing paper cutting type printer

Background

At present, a plurality of small-sized thermal printers adopting a pressing type manual cutter exist on the market, wherein a main body of the thermal printer comprises a printed box body part and a flip part for cutting paper, and the two parts are hinged along one end and are in a flip type; when the printing piece is printed, the cutter keys on the flip cover are pressed, and the cutters in the flip cover can rapidly separate the printing piece, so that the printing piece is convenient and quick; however, in other non-working states such as paper changing, the turnover cover needs to be opened, the cutter keys are touched by mistake, the cutter can still pop up, and the cutter is easy to cut himself or others.

Disclosure of Invention

In order to overcome the defects in the prior art, the utility model provides a safe and reliable push type manual cutter device with protection, when the turnover cover is opened, a locking cutter cannot be pushed out, and when the turnover cover is closed, the function of the cutter is recovered.

The technical scheme adopted for solving the technical problems is as follows:

a cutter guard for a printer, comprising a housing portion, further comprising: one end of the flip part is hinged with the box body part; the paper cutting assembly is arranged on the flip cover part and can move relative to the flip cover part to cut the printing piece; the locking piece assembly is rotatably arranged on the flip part, a torsion elastic piece is further arranged between the locking piece assembly and the flip part, the torsion elastic piece is compressed under the action of the torsion elastic piece in a normal state, and the locking piece assembly rotates to a position for blocking the paper cutting assembly from moving under the action of the torsion elastic piece; the unlocking component is arranged on the box body and can be in press connection with the locking block assembly, so that the locking block assembly is driven to rotate to a position where the paper cutting assembly can be avoided from moving.

Further, the locking block assembly comprises a long shaft and a short shaft, a driving inclined surface is arranged on the short shaft, the unlocking component is in pressure connection with the driving inclined surface to enable the short shaft to rotate, and the short shaft drives the long shaft to rotate and drive the long shaft to be far away from the motion path of the paper cutting assembly.

Further, the long shaft comprises a long shaft arm and a long shaft top, one end of the long shaft arm is connected with the short shaft, the long shaft top is arranged at the other end of the long shaft, and the long shaft top can be driven by the long shaft arm to approach or depart from the motion path of the paper cutting assembly.

Further, the long shaft top is raised relative to the long shaft arm so as to stably block the paper cutting assembly from being cut when the long shaft top rotates onto the movement path of the paper cutting assembly.

Further, the flip part includes: one end of the base is hinged with the box body; the upper cover is covered on the base in a relatively static manner and is provided with an opening.

Further, the paper cutting assembly includes: one end of the button passes through the opening and is exposed out of the upper cover, the other end of the button is kept in the upper cover and cannot be separated from the upper cover, and the button can move linearly under the action of external force; one end of the bracket is fixedly connected with the button and moves linearly along with the button; the cutter is arranged on the bracket and moves linearly along with the bracket; and the paper cutting reset spring is arranged between the button and the base in a compressed mode, and is in pressure connection with the button, so that the button keeps a trend of moving outwards of the upper cover.

Further, the paper cutting assembly further comprises a paper pressing spring and a paper pressing elastic block, the paper pressing elastic block is used for pressing the paper pressing spring into the support and limiting the paper pressing spring in a buckled mode, and the paper pressing elastic block can move linearly relative to the support.

Further, a cylinder is arranged on the flip part, and the locking block assembly and the torsion elastic piece are hinged on the cylinder.

The utility model has the beneficial effects that:

when the printer prints normally, the flip cover part covers the box body part, the unlocking part is in compression joint with the locking block assembly, the locking block assembly is driven to rotate away from the motion path of the paper cutting assembly, and the paper cutting assembly can cut off normally;

when the turnover cover part is required to be opened in a non-printing state, the turnover cover part is separated from the box body part, the unlocking component is separated from the locking block component, the compression joint is canceled, and the locking block component is twisted onto the motion path of the paper cutting component under the action of the torsional elastic component to prevent the cutter from being ejected;

according to the utility model, the cover turning part and the box body part can be automatically unlocked when being covered, and the paper cutting assembly normally cuts paper by a lower cutter; when the flip cover part and the box body are separated, the paper cutting assembly can be automatically locked, so that the paper cutting assembly cannot be cut off.

Drawings

The utility model will be further described with reference to the accompanying drawings and specific examples, in which:

FIG. 1 is an exploded view of the present utility model;

FIG. 2 is an enlarged view of a portion of the lock block assembly of the present utility model;

FIG. 3 is an enlarged view of a portion of the unlocking member and drive ramp crimp of the present utility model;

FIG. 4 is a perspective view of the paper cutting assembly of the present utility model;

fig. 5 is a cross-sectional view of a front view of the cutting assembly of the present utility model.

Drawing number marks: 11. an upper cover; 12. an opening; 21. a button; 22. a bracket; 23. strip ribs; 24. a guide groove; 25. a cutter; 26. a paper cutting reset spring; 27. a paper pressing spring; 28. pressing paper spring blocks; 31. a long axis; 311. a long shaft arm; 312. a long shaft top; 32. a torsion elastic member; 33. a short shaft; 331. a short shaft arm; 332. a driving inclined plane; 34. a lock block assembly; 35. a torsion spring supporting block; 41. a base; 42. a cylinder; 43. a spring support block; 51. the upper surface of the box body; 52. unlocking the component.

Detailed Description

For a better understanding of the objects, structure and function of the present utility model, an embodiment of a cutter guard for a printer according to the present utility model will be described in detail with reference to the accompanying drawings.

Referring to fig. 1, a cutter protecting apparatus for a printer according to the present utility model includes a folder portion having a case upper surface 51 and a case portion (not shown) having one end hinged to the case upper surface 51 and being movable to be opened and closed;

the shell of the flip cover part comprises an upper cover 11 and a base 41, wherein an opening 12 is formed in the upper cover 11, and a cylinder 42 is arranged on the base 41;

a paper cutting assembly and a locking piece assembly 34 are arranged in the flip cover part, the paper cutting assembly comprises a button 21, one end of the button 21 penetrates out of the opening 12 and is exposed out of the upper cover 11, and when a user presses the button 21, the button 21 drives the paper cutting assembly to cut by a lower cutter;

a torsion elastic piece 32 is further arranged between the lock block assembly 34 and the flip cover part, the torsion elastic piece 32 is preferably a torsion spring, the lock block assembly 34 and the torsion spring are hinged on the base 41 through the cylinder 42, and the lock block assembly 34 and the torsion spring rotate relative to the cylinder 42; the base 41 is also provided with a torsion spring supporting block 35, and the torsion spring supporting block 35 plays a role in supporting and limiting the torsion spring; the torsion spring drives the locking block assembly 34 to rotate to a lower cutter path of the paper cutting assembly, so that the lower cutter of the paper cutting assembly is prevented from cutting;

an unlocking part 52 is arranged on the upper surface 51 of the box body, the unlocking part 52 and the locking block assembly 34 are matched to complete the action of unlocking the lower cutter, the unlocking part is preferably a round table, and the round table can be in pressure connection with the locking block assembly 34 in all directions;

when the printer prints normally, the flip cover part covers the box body part, the unlocking part is in press connection with the locking piece assembly 34, the locking piece assembly 34 is driven to rotate away from the motion path of the paper cutting assembly, and the paper cutting assembly can cut off normally;

when the turnover cover part is required to be opened in a non-printing state of the printer, the turnover cover part is separated from the box body part, the unlocking component is separated from the locking piece assembly 34, the pressing connection is canceled, and the locking piece assembly 34 is twisted onto the motion path of the paper cutting assembly under the action of the torsion spring to prevent the cutter from being ejected; the user is automatically protected from being cut after the button 21 is touched by mistake in the uncapping state.

With further reference to fig. 1, 2 and 3, the lock block assembly 34 includes a major axis 31 and a minor axis 33, the minor axis 33 rotates with the flip portion relative to the housing portion and presses the lock release member 52, the minor axis 33 is pressed and rotated, and the major axis 31 rotates with and moves away from the path of movement of the paper cutting assembly.

The short shaft 33 comprises a short shaft arm 331 and a driving inclined plane 332, and the driving inclined plane 332 is fixedly connected to the short shaft arm 331; when the cover-turning part covers the box body, the unlocking part 52 is in press connection with the driving inclined plane 332 and drives the short shaft 33 to rotate, the short shaft 33 further drives the long shaft 31 to rotate away from the motion path of the paper cutting assembly, unlocking is completed, and the paper cutting assembly can be normally cut.

The long shaft 31 comprises a long shaft arm 311 and a long shaft top 312, and the long shaft top 312 is positioned at the top end of the long shaft arm 311; the long shaft arm 311 is preferably of a 7-shaped design; in order to firmly block the lower cutter when the long shaft top 312 moves under the movement path of the paper cutting assembly, the long shaft top 312 is designed to be in a convex shape relative to the long shaft arm 311, and can be spherical or cylindrical.

In this embodiment, 2 locking block assemblies 34 are symmetrically designed, but the number of the locking block assemblies 34 is not limited to 2, so long as the requirement of stabilizing the locking knife can be met, and in other embodiments, 1 or more than 2 locking block assemblies 34 can be provided.

In summary, in this embodiment, the lock block assembly 34 is hinged to the base 41 through the cylinder 42, and the friction force generated by the hinge design is small; the locking block assembly 34 comprises a long shaft 31 and a short shaft 33, the short shaft 33 is twisted by a small angle under the leverage, the long shaft 31 can be driven to rotate by a larger amplitude, the short shaft 33 can be driven to have a larger driving stroke by a smaller driving stroke, and the failure rate can be reduced by a smaller driving stroke of the short shaft 33.

With further reference to fig. 1, 4 and 5, the paper cutting assembly further comprises a bracket 22, a cutter 25, a paper pressing spring 27, a paper pressing spring block 28 and a paper cutting return spring 26;

one end of the button 21 is exposed from the opening 12, and the other end edge of the button 21 is larger than the opening 12, so that the button 21 does not completely drill out the opening 12; the button 21 is hollow and is matched with the opening 12 in shape, and the button 21 is preferably round or square; the rear end of the button 21 is provided with a guide groove 24, and the guide groove 24 is matched with the base 41 to guide the button 21 to stably move up and down;

one end of the button 21 passes through a small hole on the bracket 22 to be matched with the small hole, and the force on the button 21 can be stably transmitted to the bracket 22; the side of the bracket 22 is provided with a strip rib 23, and the strip rib 23 and the base 41 are matched to guide the bracket to stably move up and down;

the cutter 25 is arranged in the bracket 22 in a buckling limit mode and moves along the linear direction stably along with the bracket 22;

the paper pressing spring 27 is pressed in the bracket 22 by the paper pressing elastic block 28 and is buckled and limited, and the paper pressing elastic block 28 can slide up and down in a certain range of the bracket 22; the paper pressing elastic block 28 is only under the elastic force of the paper pressing spring 27 when paper is not pressed, and the paper pressing elastic block 28 is positioned at the lowest end of the limit range of the bracket 22; when the paper pressing elastic block 28 presses paper, the reaction force of paper on the paper pressing elastic block 28 is opposite to the elastic force of the paper pressing spring 27 on the paper pressing elastic block 28, the paper pressing elastic block 28 is fixed relative to the paper, and the cutter 25 is continuously close to and cuts the paper along with the support 22; the paper pressing elastic block 28 plays a role in fixing paper to prevent the paper from deviating when cutting paper by a lower cutter;

the cut paper return spring 26 is provided between the push button 21 and the spring support block 43; the concave parts of the button 21 and the bulges around the spring supporting blocks 43 play a limiting role on the paper cutting return spring 26 to prevent the paper cutting return spring from transversely moving; the paper cutting return spring 26 provides a continuous upward spring force to the paper cutting assembly to drive the paper cutting assembly to return to position and perform the next paper cutting action.

When the button 21 is pressed, the pressure drives the button 21 to counteract the elastic force of the paper cutting reset spring 26 and move downwards, the button 21 drives the support 22 matched with the button 21 to move downwards, the paper pressing elastic block 28 in the support 22 moves downwards together with the cutter 25, the paper pressing elastic block 28 firstly contacts with printing paper to fix paper and keeps still, the paper pressing elastic block 28 moves upwards relative to the support 22 relative to the paper under the action of the paper pressing spring 27, and the cutter 25 and the support 22 continue to move downwards relative to the paper until the paper is cut off and the pressure is removed; under the action of the elastic force of the paper cutting reset spring 26, the button 21 moves upwards to reset to drive the support 22 to move upwards to reset, and the support 22 drives the cutter 25 and the paper pressing elastic block 28 to reset to complete a set of paper cutting action.

In summary, the utility model can automatically lock the paper cutting assembly in the uncapping state of the printer and automatically unlock the paper cutting assembly in the box cover state, thereby achieving the purpose of preventing the cutter from being ejected out and carelessly scratched by touching the button by mistake; and the locking piece of length axle rotation design can accomplish the action of locking the sword and unblock under less drive stroke, and device efficiency and security performance are high.

It will be understood that the utility model has been described in terms of several embodiments, and that various changes and equivalents may be made to these features and embodiments by those skilled in the art without departing from the spirit and scope of the utility model. In addition, many modifications may be made to adapt a particular situation or material to the teachings of the utility model without departing from the essential scope thereof. Therefore, it is intended that the utility model not be limited to the particular embodiment disclosed, but that the utility model will include all embodiments falling within the scope of the appended claims.

Claims (8)

1. A cutter protector for printer, including box portion, its characterized in that still includes:

one end of the flip part is hinged with the box body part;

the paper cutting assembly is arranged on the flip cover part and can move relative to the flip cover part to cut the printing piece;

the locking piece assembly (34) is rotatably arranged on the flip part, a torsion elastic piece (32) is further arranged between the locking piece assembly (34) and the flip part, the torsion elastic piece (32) is stressed and compressed in a normal state, and the locking piece assembly (34) rotates to a position for blocking the paper cutting assembly from moving under the action of the torsion elastic piece (32);

and the unlocking component (52) is arranged on the box body part, and the unlocking component (52) can be pressed against the locking block assembly (34) so as to drive the locking block assembly (34) to rotate to a position capable of avoiding the movement of the paper cutting assembly.

2. A cutter guard for a printer according to claim 1, wherein the lock block assembly (34) comprises a long shaft (31) and a short shaft (33), the short shaft (33) is provided with a driving inclined surface (332), the unlocking member (52) is pressed against the driving inclined surface (332) to rotate the short shaft (33), and the short shaft (33) drives the long shaft (31) to rotate and drives the long shaft (31) away from the motion path of the paper cutting assembly.

3. A cutter guard for a printer according to claim 2, wherein the long shaft (31) comprises a long shaft arm (311) and a long shaft top (312), one end of the long shaft arm (311) is connected with the short shaft (33), the long shaft top (312) is disposed at the other end of the long shaft (31), and the long shaft top (312) can be driven by the long shaft arm (311) to approach or separate from the movement path of the paper cutting assembly.

4. A cutter guard for a printer according to claim 3, wherein the long axis roof (312) is raised relative to the long axis arm (311) to provide a stable stop against the cutter assembly from being lowered when the long axis roof (312) is rotated into the path of movement of the cutter assembly.

5. The cutter guard for a printer of claim 1, wherein the flip portion comprises:

a base (41) with one end hinged with the box body;

the upper cover (11) is covered on the base (41), the upper cover (11) is provided with an opening (12), and the opening (12) is positioned above the paper cutting assembly.

6. The cutter guard for a printer of claim 5, wherein the paper cutting assembly comprises:

a button (21) with one end exposed out of the upper cover (11) through the opening (12) and the other end kept in the upper cover (11) and unable to be separated from the upper cover (11), wherein the button (21) can move linearly under the action of external force;

one end of the bracket (22) is fixedly connected with the button (21) and moves along with the button (21) in a straight line;

a cutter (25) mounted on the support (22) and moving linearly with the support (22);

and a paper cutting return spring (26) is arranged between the button (21) and the base (41) in a compressed mode, and the paper cutting return spring (26) is pressed against the button (21) so that the button (21) keeps a trend of moving outwards of the upper cover (11).

7. The cutter guard for a printer of claim 6, wherein the paper cutting assembly further comprises a paper pressing spring (27) and a paper pressing spring block (28), the paper pressing spring (27) is pressed in the bracket (22) by the paper pressing spring block (28) and is locked and limited, and the paper pressing spring block (28) can move linearly relative to the bracket (22).

8. A cutter guard for a printer according to claim 1, wherein a cylinder (42) is provided on the flip portion, and the lock block assembly (34) and the torsion spring (32) are both hinged to the cylinder (42).