Cutter limiting mechanism and printer

Abstract

The utility model provides a cutter limiting mechanism and a printer. The cutter limiting mechanism comprises a machine shell, a limiting piece, a turning cover, a cutter assembly and a reset piece, the turning cover is rotationally connected with the machine shell along a first axis, the limiting piece is rotationally connected with the machine shell along a second axis, the cutter assembly can move, the turning cover comprises a forcing part, and the limiting piece comprises a driving arm and a limiting arm. The forcing part limits the limiting piece at a second angle, and the limiting arm releases the limiting of the cutter assembly; the forcing part comprises a first retaining surface; a second holding surface is arranged at the tail end of the driving arm, and when the limiting piece is located at the first angle, the second holding surface inclines relative to the first axis; when the flip cover is in a closed state, the first retaining face abuts against the second retaining face, and the abutting direction of the first retaining face and the second retaining face is perpendicular to the axial direction of the first axis. The printer comprises the cutter limiting mechanism. The utility model can solve the problem that the flip cover is not tightly closed.

Description

Technical Field

[0001] The utility model relates to the technical field of printers, in particular to a cutter limiting mechanism and a printer realized by using a printer flip cover. Background Art

[0002] The Chinese utility model patent with the announcement number CN116674028A discloses a self-locking cutter lock structure in a printer, the cutter lock structure comprises a casing, a flip cover, a cutter assembly and a lock, the flip cover is rotatably connected to the casing, the cutter assembly and the lock are arranged in the casing, the lock is rotatably matched in the casing through a rotating shaft, a torsion spring is arranged on the rotating shaft, the torsion spring 7 drives the lock to rotate in a locking direction, a hook and a rocker are arranged on the lock, a hooking portion is arranged on the cutter assembly, a limiting groove is arranged in the casing, the hook is buckled on the hooking portion when the lock rotates in the locking direction, and the hook has a tendency to rotate in the locking direction when the hook moves in a direction away from the lock to achieve self-locking, the rocker arm is limited in the limiting groove when the hook is buckled on the hooking portion, and the rocker arm is pushed away from the limiting groove when the flip cover is closed, thereby driving the lock to rotate in the unlocking direction to unlock, and the cutter assembly recovers the degree of freedom.

[0003] The problem with the existing cutter lock structure is that the lock is located on one axial side of the flip cover rotating foot. When the flip cover is closed, under the action of the torsion spring restoring force, the rocker arm of the lock applies an axial thrust to the flip cover rotating foot, and the hinged part between the flip cover and the casing has a certain axial looseness to ensure the relative rotation between the two. Under this thrust, the flip cover is subjected to force on one side and deviates axially, which leads to the problem of loose closing. Utility Model Content

[0004] The first purpose of the utility model is to provide a cutter limiting mechanism based on flip cover linkage, which can solve the problem of loose closing of the flip cover.

[0005] The second purpose of the utility model is to provide a printer that solves the problem of loose cover closure.

[0006] The first object of the utility model provides a cutter limiting mechanism comprising a casing, a limiting member, a flip cover, a cutter assembly and a reset member, the flip cover is connected to the casing for rotation along a first axis, the limiting member is connected to the casing for rotation along a second axis, the cutter assembly is movably installed in the casing, the flip cover comprises a forcing portion, the limiting member comprises a driving arm and a limiting arm, and the reset member is arranged between the casing and the limiting member; when the flip cover is in an open state, under the action of the reset member, the limiting member is at a first angle and the limiting arm limits the cutter assembly; when the flip cover is in a closed state, the forcing portion limits the limiting member to a second angle, and the limiting arm releases the limit on the cutter assembly; the forcing portion comprises a first retaining surface; a second retaining surface is arranged at the end of the driving arm, and when the limiting member is at the first angle, the second retaining surface is inclined relative to the first axis; when the flip cover is in a closed state, the first retaining surface abuts against the second retaining surface, and the abutting direction of the first retaining surface and the second retaining surface is perpendicular to the axial direction of the first axis.

[0007] It can be seen from the above scheme that the utility model mainly adjusts the abutment direction between the forcing part on the flip cover and the driving arm on the limit member so that the abutment direction between the two is perpendicular to the first axis, thereby not generating a component force that pushes the flip cover to deviate along the first axis direction, thereby avoiding the problem of one side not being tightly closed; and the two are set to be in surface contact cooperation, so that after the flip cover is closed, the two can firmly maintain the current abutment relationship, thereby ensuring the reliability of the limiting effect.

[0008] A further solution is that when the flip cover is in a closed state, the first retaining surface abuts against the second retaining surface along the radial direction of the first axis.

[0009] As can be seen from the above, under this arrangement, the abutment force between the forcing portion and the driving arm will not generate any component force on the flip cover, and a more stable state is achieved by utilizing the dead point.

[0010] A further solution is that in the relative direction between the flip cover and the housing, the first axis is farther away from the main body of the flip cover than the forcing portion; when the flip cover is in a closed state, the abutting direction forms an angle with the relative direction, and the limiting member limits the forcing portion from the opening direction.

[0011] As can be seen from the above, some printers are provided with a downwardly extending hinge arm on the flip cover, and the hinge arm is connected to the casing. This method makes the first axis closer to the main body of the casing, and the abutment direction between the forcing part and the driving arm is often close to between the flip cover body and the casing body. On this basis, according to the abutment direction requirements of the utility model, the abutment direction between the forcing part and the driving arm will be inclined to the cover opening direction. Unexpectedly, in this case, the driving arm will block the forcing part from above to prevent the cover from opening, thereby producing the effect of locking the flip cover.

[0012] A further solution is that the flip cover includes a forcing arm extending from its main body, and the forcing portion is arranged on the forcing arm; the forcing portion also includes a forcing surface, the extension direction of the forcing surface forms an angle with the extension direction of the forcing arm, and the forcing surface and the first retaining surface are sequentially arranged along the extension direction and connected by bending; when the flip cover changes from an open state to a closed state, the forcing surface abuts against the driving arm.

[0013] As can be seen from the above, the inclined forcing surface can more easily force the limiter to swing, thereby reducing the difficulty of operation.

[0014] A further solution is that the limit member also includes a rotating connection part and a peripheral part; the rotating connection part is arranged at the second axis, and the rotating connection part is rotatably connected to the casing; the peripheral part is connected to the rotating connection part and is located at the periphery of the rotating connection part, and when the limit member is at the first angle, the peripheral part cooperates with the casing to stop rotation; the driving arm and the limiting arm are respectively connected to the opposite sides of the peripheral part.

[0015] As can be seen from the above, the anti-rotation cooperation between the outer periphery and the housing can ensure that the limiter is at the first angle to prevent the cutter assembly from working, and the outer periphery is closer to the second axis than the driving arm and the limiting arm, and its force arm is shorter and the deformation is smaller, so the use of the outer periphery as the anti-rotation cooperation part has better reliability. The driving arm and the limiting arm are respectively connected to the opposite sides of the outer periphery, which can make the limiter structure more compact. Compared with the plate-shaped force arm starting from the rotating axis in the background technology, the driving arm and the limiting arm are shorter in length, which can further improve reliability.

[0016] A further solution is that a protruding limiting column is provided at the end of the limiting arm, and when the limiting member is at a first angle, the limiting column prevents the cutter assembly from moving forward from the front of the cutter assembly.

[0017] As can be seen from the above, the prior art uses a hook to hook the cutter assembly, but this method is difficult to match and is prone to failure. Therefore, the utility model adopts a front blocking method, which has lower precision requirements and higher reliability.

[0018] A further solution is that the casing is provided with a first chamber and a second chamber, and along the axial direction of the second axis, the first chamber and the second chamber are opened on opposite sides of the casing respectively, and the casing also includes a bottom wall blocking the first chamber and the second chamber, and the bottom wall is provided with a first connecting port; a limiting member is provided in the first chamber, and the cutting knife assembly is provided in the second chamber, and the limiting column can extend into the second chamber through the first connecting port.

[0019] As can be seen from the above, in some cases, according to the design requirements of the printer housing, the cutter assembly and the limiter are not at the same horizontal position. In this case, the hook in the background art is difficult to cooperate with the cutter assembly. However, by adopting the method of axially protruding limiter, the limiter can break through the horizontal position difference and extend to the height of the cutter assembly to complete the limit cooperation.

[0020] A further solution is that the casing is also provided with a consumable cavity, and the opening direction of the consumable cavity is the same as the opening direction of the first chamber; the consumable cavity is adjacent to the first chamber, and the casing also includes a side wall that blocks the consumable cavity and the first chamber, and a second connecting port is provided on the side wall, the limiting piece is at a first angle, and the end of the driving arm passes through the second connecting port and extends into the consumable cavity.

[0021] As can be seen from the above, under this arrangement, the idle space above the consumable chamber is used as the abutment between the end of the driving arm and the flip cover forcing part, and there is no need to open an additional socket on the casing for the forcing part to extend into the first chamber. The first chamber can be further reduced in size, and the product structure is more compact, which is conducive to the miniaturization of the product.

[0022] A further solution is that the rear section of the driving arm extends along the arc of the second axis; and / or the rear section of the limiting arm extends along the arc of the second axis.

[0023] As can be seen from the above, this arrangement makes the space occupied by the limiter smaller, the product structure more compact, and is conducive to the miniaturization of the product.

[0024] The second object of the utility model is to provide a printer comprising a cutter limiting mechanism, and the cutter limiting mechanism adopts the above-mentioned cutter limiting mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a structural diagram of the cutter limiting mechanism embodiment of the utility model from the first viewing angle with the cover opened.

[0026] Figure 2 This is a structural diagram of the cutter limiting mechanism embodiment of the utility model from a second viewing angle with the cover opened.

[0027] Figure 3 for Figure 1 Enlarged view of point A in the middle.

[0028] Figure 4 for Figure 2 Enlarged view of point B in the middle.

[0029] Figure 5 This is a structural diagram of the limiting component from the first perspective in the embodiment of the cutter limiting mechanism of the utility model.

[0030] Figure 6 This is a structural diagram of the limiting member from a second viewing angle in the embodiment of the cutter limiting mechanism of the utility model.

[0031] Figure 7 It is a partial enlarged view of the first chamber in the embodiment of the cutter limiting mechanism of the utility model.

[0032] Figure 8 It is a structural diagram of the flip cover in the embodiment of the cutter limiting mechanism of the utility model.

[0033] Fig. 9 for Figure 8 Enlarged view of point C in the middle.

[0034] Fig.10 The diagram is a view of the limiter in the embodiment of the cutter limit mechanism of the utility model at a first angle and a second angle.

[0035] Fig.11 It is a structural diagram of the cutter limiting mechanism embodiment of the utility model with the lower flip cover and the limiting member closed. DETAILED DESCRIPTION

[0036] See also Figures 1 to 11 A unified spatial rectangular coordinate system is established in each of the drawings, in which the x-axis direction represents the moving direction of the cutter assembly 4, the y-axis direction represents the axial direction of the first axis 901, the z-axis direction represents the axial direction of the second axis 902, and the z-axis direction also represents the relative direction between the housing 1 and the flip cover 2.

[0037] See also Figure 1 and Figure 2 The printer of this embodiment includes a cutter limiting mechanism, which includes a housing 1, a flip cover 2, a limiting member 3, a cutter assembly 4 and a torsion spring 5, and the torsion spring 5 is a reset member of the utility model.

[0038] See also Figure 2 The flip cover 2 is rotatably connected to the housing 1 along the first axis 901 , and the flip cover 2 can be changed from an open state to a closed state by rotating around the first axis 901 . The torsion spring 5 is disposed between the housing 1 and the stopper 3 .

[0039] See also Figure 1 and Figure 3 The stopper 3 is connected to the housing 1 for rotation along the second axis 902, see Figure 2 and Figure 4 The cutter assembly 4 is movably mounted in the housing 1.

[0040] See also Figure 5 and Figure 6 The limiting member 3 includes a rotating connection part 30, a peripheral part 31, a driving arm 32, a limiting arm 33, a short shaft 36 and a limiting boss 37. The rotating connection part 30 and the short shaft 36 are both arranged at the second axis 902, and the short shaft 36 protrudes from the rotating connection part 30; the peripheral part 31 is connected to the rotating connection part 30 and the peripheral part 31 is located at the periphery of the rotating connection part 30, and the outer side of the peripheral part 31 has a limiting mating surface 311.

[0041] The driving arm 32 and the limiting arm 33 are connected to opposite sides of the outer peripheral portion 31, respectively, and the driving arm 32 extends along the arc of the second axis 902, and the rear section of the limiting arm 33 extends along the arc of the second axis 902. In the axial direction of the second axis 902, a rounded portion is provided on one end of the first extension end 329 of the driving arm 32, and a second retaining surface 34 is also provided at the end of the first extension end 329. In this embodiment, the second retaining surface 34 is a plane, and the second retaining surface 34 is inclined to the second axis 902. The limiting boss 37 is convexly provided on the outer peripheral portion 31, and the short shaft 36 and the limiting boss 37 are both used to cooperate with the torsion spring 5. The second extension end 339 of the limiting arm 33 is provided with a limiting column 35 extending along the axial direction of the second axis 902.

[0042] See also Figure 7 The housing 1 is provided with a consumables chamber 100, a first chamber 101 and a second chamber 102. The stopper 3 is arranged in the first chamber 101, and the cutter assembly 4 is arranged in the second chamber 102. The consumables chamber 100 is used to place printing consumables. Figure 1 and Figure 2 The housing 1 includes a first side 108 and a second side 109 which are oppositely arranged in the z-axis direction, and the first side 108 and the second side 109 are respectively the front side and the back side of the housing 1. The first chamber 101 and the second chamber 102 are respectively opened at the first side 108 and the second side 109 of the housing 1, and the consumable chamber 100 is opened at the first side 108 of the housing 1. In addition, the first chamber 101 is farther away from the first axis 901 than the consumable chamber 100.

[0043] The first chamber 101 and the second chamber 102 are adjacently arranged in the z-axis direction. The housing 1 also includes a bottom wall 11 that separates the first chamber 101 and the second chamber 102. In the first chamber 101, a center column 111 protruding along the z-axis direction is provided on the bottom wall 11. The bottom wall 11 is provided with a first connecting port 110 that is connected between the first chamber 101 and the second chamber 102 along the z-axis direction. The first connecting port 110 extends along an arc with the center on the center column 111.

[0044] The consumable chamber 100 and the first chamber 101 are adjacently arranged in the x-axis direction. The housing 1 further comprises a side wall 12 separating the consumable chamber 100 and the first chamber 101 . The side wall 12 is provided with a second connecting port 120 connecting the consumable chamber 100 and the first chamber 101 .

[0045] The housing 1 further includes a blocking wall 13 that blocks the first chamber 101 in the y-axis direction and a top wall 14 that is bent and connected to the top of the blocking wall 13 and extends in the y-axis direction. The blocking wall 13 and the top wall 14 are both connected to the side wall 12. A first notch 130 is provided on the blocking wall 13, and a second notch 140 is provided on the top wall 14. The first communication port 110, the first notch 130, and the second notch 140 are connected to each other, and in the projection in the z-axis direction, the space connected by the first communication port 110, the first notch 130, and the second notch 140 extends along an arc. In addition, the housing 1 further includes a baffle 15 extending from the side wall 12, and the baffle 15 and the top wall 14 are spaced apart in the z-axis direction to form a snap-fit ​​position 150.

[0046] Combination Figure 3 The rotating connecting part 30 is rotatably connected to the central column 111 at the second axis 902, the torsion spring 5 is sleeved on the short shaft 36, and the two ends of the torsion spring 5 are respectively fixed to the bottom of the limiting boss 37 and the engaging position 150, see Figure 3 At this time, under the restoring force of the torsion spring 5 and the stop-rotation cooperation between the stopper mating surface 311 of the outer peripheral portion 31 and the wall of the housing 1, the stopper 3 is limited to the first angle. At this time, the end of the driving arm 32 passes through the second communication port 120 and extends into the consumable cavity 100. Figure 4 , the limiting column 35 extends into the second chamber 102 through the first connecting port 110, and at this time, the limiting column 35 blocks the cutter assembly 4 from the front in the forward direction of the cutter assembly 4. Fig.10 State a indicates that the limiting member 3 is at a first angle, and at this time, the second retaining surface 34 (shown by the hatched line) of the limiting member 3 is inclined relative to the first axis 901.

[0047] See also Figure 8 and Fig. 9 The flip cover 2 includes a forcing arm 21 extending from its main body, and a forcing portion 22 protrudes from the forcing arm 21. The forcing portion 22 includes a first retaining surface 221 and a forcing surface 222, and the forcing surface 222 is sequentially arranged with the first retaining surface 221 along the extension direction and is connected by bending, and the extension direction of the first retaining surface 221 and the extension direction of the forcing surface 222 are both at an angle to the extension direction of the forcing arm 21.

[0048] Combination Fig.11 The flip cover 2 in the open state can be changed to the closed state after swinging down. During the process, the forcing surface 222 abuts against the end of the driving arm 32 and forces the limiter 3 to swing. Fig.10 The first angle of state a is rotated to Fig.10 The second angle is indicated by the b state, and at this time the first retaining surface 221 abuts against the second retaining surface 34, and the abutting direction w between the first retaining surface 221 and the second retaining surface 34 is the radial direction of the first axis 901.

[0049] In addition, combined with Figure 8 In this embodiment, the flip cover 2 is provided with a hinge arm 29 extending downward from its main body, and the end of the hinge arm 29 is hinged to the housing 1. Under this arrangement, in the relative direction (z-axis direction) between the flip cover 2 and the housing 1, the first axis 901 is closer to the main body of the housing 1 than the stopper 3 and farther away from the main body of the flip cover 2, see Fig.11 On the axial projection of the first axis 901, when the flip cover 2 is in the closed state, the abutment direction w forms an angle with the relative direction (z-axis direction) of the housing 1. At this time, the limiting member 3 limits the forcing portion 22 from the opening direction.

[0050] Mainly, since the abutment direction between the first retaining surface 221 and the second retaining surface 34 is perpendicular to the first axis 901, no component force will be generated to push the flip cover 2 to deviate along the direction of the first axis 901, thereby avoiding the problem of one side not being tightly closed; and the two are set to be in surface contact, so after the flip cover 2 is closed, the current abutment relationship between the two can be firmly maintained, thereby ensuring the reliability of the limiting effect.

[0051] In other embodiments, the abutting direction between the first retaining surface and the second retaining surface is perpendicular to the first axis and is not along the radial direction of the first axis.

[0052] Finally, it should be emphasized that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various changes and modifications. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A cutter limiting mechanism, comprising a housing, a limiting member, a flip cover, a cutter assembly and a reset member, wherein the flip cover is rotatably connected to the housing along a first axis, the limiting member is rotatably connected to the housing along a second axis, the cutter assembly is movably installed in the housing, the flip cover comprises a forcing portion, the limiting member comprises a driving arm and a limiting arm, and the reset member is arranged between the housing and the limiting member; When the flip cover is in an open state, under the action of the reset member, the limiting member is at a first angle and the limiting arm limits the cutter assembly; When the flip cover is in a closed state, the forcing portion limits the limiting member to a second angle, and the limiting arm releases the limiting effect on the cutter assembly; Features: The forcing portion includes a first retaining surface; A second retaining surface is provided at the end of the driving arm, and when the limiting member is at the first angle, the second retaining surface is inclined relative to the first axis; When the flip cover is in the closed state, the first retaining surface abuts against the second retaining surface, and the abutting direction of the first retaining surface and the second retaining surface is perpendicular to the axial direction of the first axis.

2. The cutter limiting mechanism according to claim 1, characterized in that: When the flip cover is in the closed state, the first retaining surface abuts against the second retaining surface along the radial direction of the first axis.

3. The cutter limiting mechanism according to claim 2, characterized in that: In the relative direction between the flip cover and the housing, the first axis is farther away from the main body of the flip cover than the pressing portion; When the flip cover is in the closed state, the abutting direction forms an angle with the relative direction, and the limiting member limits the forcing portion from the cover opening direction.

4. The cutter limiting mechanism according to any one of claims 1 to 3, characterized in that: The flip cover includes a forcing arm extending from a main body thereof, and the forcing portion is arranged on the forcing arm; The forcing portion further includes a forcing surface, the extension direction of the forcing surface forms an angle with the extension direction of the forcing arm, and the forcing surface and the first retaining surface are sequentially arranged along the extension direction and connected by bending; When the flip cover is transformed from the open state to the closed state, the pressing surface abuts against the driving arm.

5. The cutter limiting mechanism according to any one of claims 1 to 3, characterized in that: The position-limiting member further comprises a rotation connection portion and an outer peripheral portion; The rotating connection part is arranged at the second axis, and the rotating connection part is rotatably connected to the housing; The outer peripheral portion is connected to the rotating connection portion and is located at the outer periphery of the rotating connection portion, and when the limiting member is at the first angle, the outer peripheral portion is engaged with the housing to prevent rotation; The driving arm and the limiting arm are respectively connected to two opposite sides of the outer peripheral portion.

6. The cutter limiting mechanism according to any one of claims 1 to 3, characterized in that: A protruding limiting column is provided at the end of the limiting arm. When the limiting member is at the first angle, the limiting column prevents the cutter assembly from moving forward from the front of the cutter assembly.

7. The cutter limiting mechanism according to claim 6, characterized in that: The housing is provided with a first chamber and a second chamber, and along the axial direction of the second axis, the first chamber and the second chamber are opened at opposite sides of the housing respectively, and the housing further comprises a bottom wall that blocks the first chamber and the second chamber, and the bottom wall is provided with a first communication port; The limiting member is disposed in the first chamber, the cutting knife assembly is disposed in the second chamber, and the limiting column can extend into the second chamber through the first connecting port.

8. The cutter limiting mechanism according to claim 7, characterized in that: The housing is further provided with a consumable cavity, and the opening direction of the consumable cavity is the same as the opening direction of the first chamber; The consumable cavity is adjacent to the first cavity, and the housing further comprises a side wall separating the consumable cavity from the first cavity, a second connecting opening is provided on the side wall, the limiting member is at the first angle, and the end of the driving arm passes through the second connecting opening and extends into the consumable cavity.

9. The cutter limiting mechanism according to claim 7, characterized in that: The rear section of the driving arm extends along the arc of the second axis; and / or the rear section of the limiting arm extends along the arc of the second axis.

10. A printer, comprising a cutter limiting mechanism, characterized in that: The cutter limiting mechanism adopts the cutter limiting mechanism described in any one of claims 1 to 9 above.

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