Guide belt assembly and printing consumable box

Abstract

The utility model provides a conduction band assembly and a printing consumable box. The ribbon guide assembly comprises a shell, a ribbon guide part, a thermal transfer ribbon and a supply shaft, the shell is provided with a cavity and an outlet of the cavity, the supply shaft and the ribbon guide part are arranged in the cavity, the ribbon guide part is arranged between the supply shaft and the outlet, the thermal transfer ribbon is wound on the supply shaft, and the thermal transfer ribbon sequentially passes through the ribbon guide part and the outlet after being led out from the supply shaft; the ribbon guide piece adopts a ribbon guide rod, the ribbon guide rod is made of a metal material, the ribbon guide rod comprises a circumferential surface used for supporting a thermal transfer ribbon, and the circumferential surface is arranged to be a smooth surface. A matching shaft section is arranged at the axial end of the belt guide rod, a buckling position is arranged in the cavity, the matching shaft section is matched with the buckling position, and an inlet of the buckling position is formed in the radial direction of the matching shaft section. According to the utility model, the ribbon guiding effect of the thermal transfer ribbon is effectively improved, the printing quality is improved, the installation mode of the ribbon guiding rod is improved, and the ribbon guiding rod is suitable for printing consumable boxes which are covered up and down or spliced left and right.

Description

Technical Field

[0001] The utility model relates to the technical field of printing consumables, in particular to a guide belt component and a printing consumables box. Background Art

[0002] The existing integrated thermal transfer printing consumables box includes a shell, a paper tape and its winding core, a tape guide plate, a carbon ribbon and its supply shaft and its recovery shaft. The shell includes a larger main box, a smaller sub-box body, and two connecting arms connecting the main box body and the sub-box body. The main box body forms a chamber and an outlet, the sub-box body forms a sub-chamber and an inlet, and a paper feed channel with upper and lower openings is formed between the two connecting arms. The winding core, supply shaft, and tape guide plate are installed in the chamber, with the tape guide plate positioned below the outlet. The recovery shaft is installed in the sub-chamber. The paper tape is wound on the winding core and led out from the outlet to the paper feed channel. The carbon ribbon is wound between the supply shaft and the recovery shaft and extends between the outlet, the paper feed channel, and the inlet. The carbon ribbon is supported on the tape guide plate under the pulling force of the recovery shaft and bends through the guide plate, so that the tape guide plate can smooth the carbon ribbon.

[0003] The existing consumables cartridge has a problem: the tape guide plate is relatively thin and injection-molded. When the reel pulls the ribbon, the ribbon supporting it exerts pressure on the plate. This pressure is sufficient to cause the plate to bend, and the ribbon attached to it also bends and wrinkles, losing its original smoothing effect and affecting print quality. Furthermore, the thin plate-shaped tape guide plate is installed by inserting its ends into slots along the length of the plate. The slots are also long and narrow, making alignment difficult. Furthermore, the bent tape guide plate can easily fall out of the slot. Utility Model Content

[0004] The first object of the present invention is to provide a guide belt assembly that improves the guiding effect of a carbon ribbon and enhances product stability.

[0005] A second object of the present invention is to provide a printing consumables box that improves the carbon ribbon guiding effect and improves product stability.

[0006] The first object of the present invention is to provide a tape guide assembly comprising a housing, a tape guide member, a carbon ribbon, and a supply shaft. The housing is provided with a chamber and an outlet of the chamber. The supply shaft and the tape guide member are both provided within the chamber. The tape guide member is provided between the supply shaft and the outlet. The carbon ribbon is wound around the supply shaft and, after being drawn from the supply shaft, passes through the tape guide member and the outlet in sequence. The tape guide member comprises a tape guide rod, which includes a circumferential surface for supporting the carbon ribbon, the circumferential surface being configured as a smooth surface. A mating shaft segment is provided at an axial end of the tape guide rod, a buckle position is provided within the chamber, the mating shaft segment mates with the buckle position, and an entrance to the buckle position is radially extending from the mating shaft segment.

[0007] It can be seen from the above scheme that under this setting, the cylindrical tape guide rod has sufficient rigidity to resist the pressure of the carbon ribbon to maintain straightness, and the carbon ribbon sent out after being smoothed by the tape guide rod is smoother. The circumferential surface can make the bending part of the carbon ribbon transition smoothly with a circular arc, and the circumferential surface is set to a smooth surface to reduce friction, so that the transportation of the carbon ribbon is smoother. It can be seen that the utility model effectively improves the tape guiding effect on the carbon ribbon, thereby improving the printing quality. Furthermore, the utility model also optimizes the assembly method of the tape guide rod. Under this setting, the tape guide rod can be clamped to the outer shell along its radial direction. It is applicable to printing consumables boxes whether they are upper and lower covers or left and right half shells. The installation is completed quickly. Moreover, since the tape guide rod is not easy to deform, the problem of escaping from the buckle position is also solved, ensuring that the consumables box can continue to work effectively and stably.

[0008] A further solution is that the entrance of the buckle position includes a narrow mouth portion, the width of the narrow mouth portion is smaller than the outer diameter of the mating shaft segment; the outer shell is provided with two buckling parts corresponding to each buckle position and mating with the buckle position, and between the two buckling parts mating with the same buckle position, on the axial projection of the mating shaft segment, the two buckling parts are respectively arranged on opposite sides of the buckle position, and at least one buckling part is arranged to have elastic deformation capability.

[0009] As can be seen from the above, under this arrangement, when the tape guide bar is installed in place, the buckle portion will prevent the tape guide bar from loosening, thereby improving assembly reliability.

[0010] A further solution is that the entrance of the buckle position also includes a flared portion, the flared portion, the narrow portion and the buckle position are connected in sequence, and the width of the flared portion gradually decreases to the narrow portion.

[0011] As can be seen from the above, the flared portion plays a guiding role, further reducing the difficulty of installing the guide rod.

[0012] A further solution is that between the two fastening parts that cooperate with the same buckle position, a recess is provided on the side of one fastening part facing the buckle position, the recess is recessed in the direction away from the buckle position, and the mating shaft section cooperates with the recess; and / or; between the two fastening parts that cooperate with the same buckle position, a slope is provided on the side of one fastening part facing the buckle position, and the slope gradually moves away from the other fastening part along the entry direction of the buckle position.

[0013] As can be seen from the above, the setting of the concave position can achieve a better axis positioning effect, but if the concave position is set on both sides, it will increase the difficulty of installing the guide rod. Therefore, it is better to set the concave position on one side and the inclined surface on the other side to increase the position, which not only meets the axis positioning requirements but also reduces the installation difficulty.

[0014] A further solution is that the concave portion is provided on the buckling portion with elastic deformation capability, the inclined surface is provided on the fixed buckling portion, and / or the inner contour of the concave portion is arc-shaped in the axial projection of the tape guide rod.

[0015] As can be seen from the above, in fact, due to the relatively large degree of depression of the recess, if the recess is set on the fixed buckle part, the elastically deformable buckle part needs to have a greater degree of elastic deformation, which increases the difficulty of pulling the elastic buckle part during operation and makes it more likely to be damaged. However, if the recess is set on the elastically deformable buckle part, its elastic deformation actually makes the recess face further towards the entrance, making it easier for the tape guide rod to enter the buckle part with a smaller pulling range. On the other hand,

[0016] The inner contour of the concave position matches the outer contour of the mating shaft segment, achieving a better axis center positioning effect.

[0017] A further solution is that the two buckling parts that cooperate with the same buckle position are staggered along the axial direction of the guide rod, one buckling part with elastic deformation ability is spaced apart from the inner wall surface of the cavity, and the other fixed buckling part is connected to the inner wall surface of the cavity.

[0018] As can be seen from the above, this arrangement ensures that one elastic buckling portion is cantilevered and has sufficient elastic deformation capacity, and also utilizes the other fixed buckling portion as a reinforcement structure of the shell wall to enhance the structural strength of the shell itself.

[0019] In a further embodiment, the entrance of the buckle position is arranged to face away from the exit; and / or the pressure of the carbon ribbon on the tape guide rod tends to cause the tape guide rod to face away from the entrance of the buckle position.

[0020] As can be seen from the above, under the above two settings, the force exerted by the carbon ribbon on the tape guide rod tends to make the tape guide rod further away from the entrance of the buckle position. This setting also has the effect of preventing loosening.

[0021] Another further solution is that matching shaft sections are provided at both axial ends of the supply shaft, and two buckle positions are provided in the chamber; in the axial direction of the guide rod, the size of the outlet is larger than the size of the guide rod, and the size of the outlet is larger than the maximum distance between the two buckle positions, and the guide rod can enter the chamber through the outlet and be installed in the buckle position.

[0022] As can be seen from the above, under this arrangement, regardless of whether the outer shell is in the form of upper and lower covers or left and right half shells, the tape guide rod can be installed from the outlet, which does not increase the difficulty of assembling the consumable box.

[0023] A further solution is that the tape guide rod is made of metal.

[0024] As can be seen from the above, this arrangement further enhances the anti-bending deformation capability of the tape guide bar and is more conducive to processing the tape guide surface into a smooth surface.

[0025] The second object of the present invention is to provide a printing consumables box including the above-mentioned guide belt assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1It is a partial cross-sectional view of an embodiment of a guide belt assembly of the present invention.

[0027] Figure 2 This is a structural diagram of the outer shell and the tape guide rod in an embodiment of the tape guide assembly of the present invention from a first perspective.

[0028] Figure 3 This is a structural diagram of the outer shell and the tape guide rod in the embodiment of the tape guide assembly of the present invention from a second perspective.

[0029] Figure 4 This is a structural exploded view of the outer shell and the tape guide rod in the embodiment of the tape guide assembly of the present invention.

[0030] Figure 5 for Figure 4 Enlarged view of point A in the middle.

[0031] Figure 6 for Figure 2 Enlarged view of point B in the middle.

[0032] Figure 7 This is a partial view of the axial projection of the buckle position of the guide belt assembly embodiment of the present invention.

[0033] Figure 8 This is a view of the changing state of the elastic buckle portion of the guide belt assembly embodiment of the present utility model. DETAILED DESCRIPTION

[0034] See also Figure 1 and Figure 2 The printing consumables box of the present invention includes a tape guide assembly. The tape guide assembly of this embodiment includes a shell 1, a supply shaft 2, a tape guide rod 3 and a carbon ribbon 9. The tape guide rod 3 is a tape guide member. The shell 1 is provided with a chamber 100 and an outlet 10 of the chamber 100. The supply shaft 2 and the tape guide rod 3 are both arranged in the chamber 100, and the tape guide rod 3 is arranged between the supply shaft 2 and the outlet 10; the carbon ribbon 9 is wound on the supply shaft 2. After the carbon ribbon 9 is drawn out from the supply shaft 2, it passes through the tape guide rod 3 and the outlet 10 in sequence, and is finally wound onto the recovery shaft.

[0035] Combine Figure 3 and Figure 4 The tape guide rod 3 is made of metal, and more particularly, copper alloy or alloy steel. The tape guide rod 3 includes an optical axis segment 32 and two mating axis segments 31 with a smaller outer diameter connected to the axial ends of the optical axis segment 32. The optical axis segment 32 includes a smooth circumferential surface for supporting the carbon ribbon 9.

[0036] Furthermore, the housing 1 is provided with a buckle position 50 on both sides in the width direction of the outlet 10, that is, on both sides in the axial direction of the tape guide rod 3. The tape guide rod 3 is installed in the housing 1 by respectively buckling the two matching shaft sections 31 with the two buckle positions 50.

[0037] Recombination Figures 5 to 7 Each buckle position 50 is formed between a pair of buckling parts, that is, the shell 1 is provided with two buckling parts corresponding to each buckle position 50 and cooperating with the buckle position 50, and the pair of buckling parts includes a fixed buckle part 51 and an elastic buckle part 52. The fixed buckle part 51 is the fixed buckle part of the utility model, and the elastic buckle part 52 is the buckle part of the utility model that is set to have elastic deformation ability.

[0038] Special combination Figure 4 The housing 1 includes a side wall 111 and a rear wall 112 connected by a right-angle bend. The side wall 111 is arranged axially toward the tape guide rod 3, while the rear wall 112 is arranged in the front-to-back direction of the housing 1, as shown in the x-axis direction in the figure. In this embodiment, the fixed buckle 51 is actually the top of a vertical reinforcing rib connected between the inner wall surfaces of the side wall 111 and the inner wall surfaces of the rear wall 112 of the housing 1, while the elastic buckle 52 is a cantilever extending from the rear wall along the positive x-axis. Along the axial direction of the tape guide rod 3, the elastic buckle 52 is spaced apart from the inner wall surface of the side wall 111 to ensure that the elastic buckle 52 forms an elastic arm structure with an elastically deformable end. Because the fixed buckle 51 is arranged in close contact with the inner wall surface of the side wall 111 and the elastic buckle 52 is spaced apart from the inner wall surface of the side wall 111, the fixed buckle 51 and the elastic buckle 52, which engage with the same buckle position 50, are staggered along the axial direction of the tape guide rod 3.

[0039] See especially Figure 7 In the axial projection of the tape guide rod 3 , the fixed buckling portion 51 is opposite to the elastic buckling portion 52 , and the buckling position 50 and the entrance 500 of the buckling position 50 are formed between the fixed buckling portion 51 and the elastic buckling portion 52 .

[0040] Combine Figure 5 , wherein the entrance 500 of the buckle position 50 is opened along the radial direction of the mating shaft segment 31, as shown in the positive direction of the x-axis in the figure. The entrance 500 of the buckle position 50 includes a narrow portion 501, the width of which is smaller than the outer diameter of the mating shaft segment 31; the entrance 500 also includes a flared portion 502, which is farther away from the mating shaft segment 31 than the narrow portion 501. That is, the flared portion 502, the narrow portion 501 and the buckle position 50 are connected in sequence along the entry direction of the buckle position 50, that is, the negative direction of the x-axis in the figure. The width of the flared portion 502 gradually decreases to the narrow portion 501. Mainly, because the fixed buckle portion 51 and the elastic buckle portion 52 are respectively guided by inclined surfaces on both sides of the entrance 500, the entrance 500 is initially at its largest opening and gradually shrinks. The width of the narrow mouth portion 501 and the width of the flared mouth portion 502 refer to the dimensions in the width direction perpendicular to the entry direction of the buckle position 50 on the axial projection of the guide rod 3. The negative direction of the x-axis in the figure represents the entry direction of the buckle position 50, and the y-axis direction in the figure represents the above-mentioned width direction.

[0041] An arc-shaped recess 520 is provided on the side of the elastic buckling portion 52 facing the buckle position 50, and the arc-shaped recess 520 is recessed away from the buckle position 50. An inclined surface 510 is provided on the side of the fixed buckling portion 51 facing the buckle position 50. In the axial projection of the guide rod 3, the inclined surface 510 gradually moves away from the elastic buckling portion 52 along the entry direction of the buckle position 50, that is, the negative direction of the x-axis in the figure. Figure 7 In the axial projection shown, the arcuate recess 520 is opposite to the inclined surface 510 , and the mating shaft segment 31 is confined in the buckle position 50 formed between the arcuate recess 520 and the inclined surface 510 . Of course, a portion of the mating shaft segment 31 is located in the arcuate recess 520 .

[0042] Combine Figure 8 The arc-shaped recess 520 is positioned on the elastically deformable elastic buckling portion 52. Comparing the position of the arc-shaped recess 520 before deformation (shown by the dashed line) and the position of the arc-shaped recess 520 after deformation (shown by the solid line), it can be seen that when the elastic buckling portion 52 elastically swings upward, the arc-shaped recess 520 faces further toward the entrance 500. This allows the tape guide bar 3 to easily enter the buckling portion 50 even with a smaller swing of the elastic buckling portion 52. Furthermore, the arc-shaped recess 520 is provided on one side of the buckling portion 50, while the inclined surface 510 is provided on the other side to increase the position, thereby satisfying the axis positioning requirements and reducing the difficulty of installation.

[0043] Continue to see Figure 7 In this embodiment, the outlet 10 opens toward the positive direction of the x-axis and the inlet 500 of the buckle position 50 opens along the negative direction of the x-axis, that is, the inlet 500 is arranged to face away from the outlet 10, and the carbon ribbon 9 extends from bottom to top, passes through the tape guide rod 3, bends, and is led out from the outlet 10 until it is connected to the recovery shaft. After the recovery shaft rotates and pulls the carbon ribbon 9, the carbon ribbon 9 will apply pressure to the tape guide rod 3 along the v-axis direction shown in the figure. This pressure has a negative component force of the x-axis, which will tend to cause the tape guide rod 3 to move away from the inlet 500 of the buckle position 50.

[0044] It can be seen that in the present invention, the installation method of the tape guide rod 3 is improved according to the working state of the tape guide rod 3 for the consideration of assembly reliability. Not only is a narrow mouth portion 501 with a width smaller than the mating shaft segment 31 provided to block the mating shaft segment 31, but the tape guide rod 3 is in close contact with the carbon ribbon and can smooth the carbon ribbon.

[0045] On the other hand, the present invention also considers whether the installation of the tape guide rod 3 affects the assembly of the consumables box. Figure 3 Two snap-in locations 50 are provided within chamber 100. In the axial direction of tape guide rod 3, outlet 10 is larger than tape guide rod 3 and also larger than the maximum distance between the two snap-in locations 50. Therefore, tape guide rod 3 can enter chamber 100 through outlet 10 and then be installed in snap-in locations 50. With this arrangement, regardless of whether housing 1 is in a top-down, bottom-up, or left-right half-shell configuration, tape guide rod 3 can be installed through outlet 10, minimizing the difficulty of consumables cartridge assembly.

[0046] In other embodiments, the two buckling parts that cooperate with the buckle position are both configured as elastic buckling parts with elastic deformation capability.

[0047] In other embodiments, both buckling parts are configured as fixed buckling parts. Under this configuration, after the engaging rod section of the tape guide rod is pressed into the buckling position, loosening is mainly prevented by interference fit and pressure from the carbon ribbon.

[0048] In other embodiments, the opening direction of the buckle position entrance and the opening direction of the outlet form an angle greater than 90 degrees and less than 180 degrees. Under this setting, although the buckle position entrance is not set back to the outlet, the anti-loosening effect can be achieved under the pressure of the carbon ribbon.

[0049] 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 tape guide assembly, comprising a housing, a tape guide member, a carbon ribbon, and a supply shaft, wherein the housing is provided with a chamber and an outlet of the chamber, the supply shaft and the tape guide member are both disposed within the chamber, the tape guide member is disposed between the supply shaft and the outlet, the carbon ribbon is wound on the supply shaft, and after being drawn from the supply shaft, the carbon ribbon passes through the tape guide member and the outlet in sequence; Its characteristics are: The tape guide member adopts a tape guide rod, and the tape guide rod includes a circumferential surface for supporting the carbon ribbon, and the circumferential surface is set to be a smooth surface; A matching shaft section is provided at the axial end of the belt guide rod, a buckle position is provided in the chamber, the matching shaft section is matched with the buckle position, and an entrance of the buckle position is opened along the radial direction of the matching shaft section.

2. The guide belt assembly according to claim 1, wherein: The entrance of the buckle position includes a narrow mouth portion, the width of the narrow mouth portion is smaller than the outer diameter of the matching shaft segment; The shell is provided with two snap-fitting parts corresponding to each snap-fitting position, and between the two snap-fitting parts that cooperate with the same snap-fitting position, on the axial projection of the cooperating shaft segment, the two snap-fitting parts are respectively arranged on opposite sides of the snap-fitting position, and at least one of the snap-fitting parts is arranged to have elastic deformation capability.

3. The guide belt assembly according to claim 2, characterized in that: The entrance of the buckle position further includes a flared portion, the flared portion, the narrow portion and the buckle position are sequentially connected, and the width of the flared portion gradually decreases to the narrow portion.

4. The guide belt assembly according to claim 2, wherein: Between the two buckling parts that cooperate with the same buckle position, a concave position is provided on a side of one buckle part facing the buckle position, the concave position is recessed in a direction away from the buckle position, and the matching shaft section cooperates with the concave position; and / or; Between the two buckling parts that cooperate with the same buckle position, a side of one buckle part facing the buckle position is provided with an inclined surface, and along the entry direction of the buckle position, the inclined surface gradually moves away from the other buckle part.

5. The guide belt assembly according to claim 4, characterized in that: The concave portion is provided on the buckling portion having elastic deformation capability, the inclined surface is provided on the fixed buckling portion, and / or on the axial projection of the tape guide rod, and the inner contour of the concave portion is in an arc shape.

6. The guide belt assembly according to claim 2, wherein: The two buckling parts that cooperate with the same buckle position are staggered along the axial direction of the guide rod, one buckling part with elastic deformation ability is spaced apart from the inner wall surface of the cavity, and the other fixed buckling part is connected to the inner wall surface of the cavity.

7. The guide belt assembly according to any one of claims 1 to 6, characterized in that: The entrance of the buckle position is arranged to face away from the exit; and / or, The pressure of the carbon ribbon on the tape guide rod tends to cause the tape guide rod to move away from the entrance of the buckle position.

8. The guide belt assembly according to any one of claims 1 to 6, characterized in that: The mating shaft segments are provided at both axial ends of the supply shaft, and two buckling positions are provided in the chamber; In the axial direction of the tape guide rod, the size of the outlet is larger than that of the tape guide rod, and the size of the outlet is larger than the maximum distance between the two buckle positions. The tape guide rod can enter the chamber through the outlet and then be installed in the buckle position.

9. The guide belt assembly according to any one of claims 1 to 6, characterized in that: The belt guide rod is made of metal material.

10. A printing consumables box, characterized in that: A guide belt assembly comprising any one of claims 1 to 9.

Images