Moisturizing cover driving mechanism and printer

Abstract

The utility model relates to a moisturizing cover driving mechanism which comprises a base and a first rack arranged in the left-right direction. The first sliding block is movably arranged on the base in the left-right and up-down directions; the second sliding block is movably arranged on the first sliding block in the front-back direction, and a second rack arranged in the front-back direction is arranged on the second sliding block; the driving assembly is arranged on the first sliding block and is in transmission connection with the base and the second sliding block; the driving assembly comprises a first gear and a second gear, the first gear is meshed with the first rack, and the second gear is meshed with the second rack; the second gear comprises a first meshing tooth part and a second meshing tooth part which are distributed in the circumferential direction, the second meshing tooth part is higher than the first meshing tooth part, and the arc length of the first meshing tooth part is matched with the length of the second rack. The stroke of the first sliding block can be increased in the limited space, the stability of the relative position of the moisturizing cover and the ink box is guaranteed, and the problem that a nozzle of the ink box is dry and blocked is solved. The utility model also relates to a printer comprising the moisturizing cover driving mechanism.

Description

Technical Field

[0001] The utility model relates to a moisturizing cover driving mechanism and also relates to a printer applying the moisturizing cover driving mechanism. Background Art

[0002] In a printer, in order to solve the problem of cleaning and moisturizing the nozzle on the ink cartridge, a moisturizing cover is usually set to achieve the nozzle. For example, the Chinese utility model patent "Printer Cartridge Cleaning and Maintenance Device" with the authorization announcement number CN209079482U (application number 201821377159.5) discloses a cartridge cleaning and protection device, including a maintenance unit base, a carriage push slider assembly, an upper sliding gear, a lower sliding gear, a slider, a moisturizing cover and other structures. The moisturizing cover moves to the position below the ink cartridge under the cooperation of the carriage push slider assembly, the upper sliding gear, the lower sliding gear and the slider, and then covers the nozzle of the ink cartridge. However, in this structure, when the carriage pushes the slider assembly and no longer moves, the slider continues to move for a small stroke. Based on the difference between the size of each component and the theoretical design value, the moisturizing cover cannot be stably maintained at the specified position, resulting in a deviation in the relative position of the moisturizing cover and the ink cartridge, which in turn causes the ink cartridge to dry and clog, affecting the user experience. Utility Model Content

[0003] The first technical problem to be solved by the utility model is to provide a moisturizing cover driving mechanism for the above-mentioned prior art, which can increase the stroke of the first slider within a limited space, ensure the stability of the relative position of the moisturizing cover and the ink cartridge, and avoid the problem of drying and clogging of the nozzle of the ink cartridge.

[0004] The second technical problem to be solved by the present invention is to provide a printer using the aforementioned moisturizing cover driving mechanism in view of the above-mentioned prior art.

[0005] The utility model solves the above-mentioned first technical problem by adopting the following technical solution: a moisturizing cover driving mechanism, comprising

[0006] A base having a first rack arranged along a left-right direction;

[0007] A first sliding block is arranged on the base so as to be movable in left-right and up-down directions;

[0008] A second slider is movably arranged on the first slider in the front-rear direction, and a second rack is arranged in the front-rear direction on the second slider for mounting the moisturizing cover;

[0009] It is characterized by: it also includes

[0010] A driving assembly is arranged on the first slider and is transmission-connected with the base and the second slider;

[0011] The driving assembly includes a first gear and a second gear which are relatively stationary. The first gear meshes with a first rack, and the second gear meshes with a second rack;

[0012] The second gear includes a first tooth portion and a second tooth portion distributed circumferentially. The second tooth portion is higher than the first tooth portion, and the arc length of the first tooth portion matches the length of the second rack.

[0013] Preferably, a third rack is provided at the rear end of the second rack on the second slider. The height of the third rack is higher than that of the second rack and meshes with the second tooth portion.

[0014] To ensure the stable rotation of the second gear when it moves to the front end of the second slider, a limiting post is provided on the second tooth portion, and a limiting member for restricting the self-rotation of the second gear is provided at the front end of the second rack on the second slider. A guiding groove with a downward opening for the limiting post to turn into is formed on the limiting member.

[0015] Simply structured, first guiding holes extending in the front-rear direction are oppositely provided on the left and right sides of the second slider on the first slider, and first guiding posts placed in the corresponding first guiding holes are respectively provided on the left and right side walls of the second slider.

[0016] To ensure the effective contact and coverage of the moisture-proof cover on the ink cartridge nozzle, second guiding holes extending in the left-right direction are respectively provided on the front and rear side surfaces of the base, and the left end of the second guiding hole is lower than the right end;

[0017] Second guiding posts respectively placed in the second guiding holes are provided on the first slider.

[0018] Simply structured, a third guiding hole extending in the left-right direction is provided on the bottom surface of the base, and a third guiding post extending downward and placed in the third guiding hole is provided on the first slider.

[0019] To realize the automatic reset of the first slider and the second slider, a reset hole is formed on the bottom surface of the base. The reset hole extends in the left-right direction and gradually bends forward from left to right;

[0020] A reset member is swingably provided on the first slider in the up-down direction, and the lower end of the reset member is placed in the reset hole;

[0021] A torsion spring is provided between the first slider and the reset member, and the torsion spring has a tendency to drive the lower end of the reset member to swing upward.

[0022] The technical solution adopted by the present utility model to solve the above-mentioned second technical problem is as follows: A printer includes a carriage, an ink cartridge disposed on the carriage, and a moisture-proof cover disposed in matching with the ink cartridge, and is characterized in that: it further includes the aforementioned moisture-proof cover driving mechanism, and the moisture-proof cover is elastically and floatingly disposed on a second slider in the up-and-down direction.

[0023] Briefly in terms of structure, a bracket is movably disposed on the second slider in the up-and-down direction, an elastic member is disposed between the bracket and the second slider, and the moisture-proof cover is disposed on the bracket.

[0024] Preferably, a scraper is disposed on the second slider, and the scraper is located behind the moisture-proof cover.

[0025] Compared with the prior art, the advantages of the present utility model are as follows: In the moisture-proof cover driving mechanism of the present utility model, through the improvement of the second gear structure, that is, the second gear is set to include a first tooth portion and a second tooth portion circumferentially distributed, and the second tooth portion is higher than the first tooth portion. Thus, when the second gear moves to the front end of the second slider and rotates around its own axis based on the engagement of the first tooth portion with the second rack, due to the structure that the second tooth portion is higher than the first tooth portion, when the second gear rotates around its own axis, the second tooth portion can avoid contacting with the second rack, thereby increasing the rotation stroke of the second gear, correspondingly increasing the engagement stroke of the first gear with the first rack, increasing the stroke of the first slider moving rightward relative to the base, ensuring the relative position stability between the moisture-proof cover and the ink cartridge, and thus avoiding the problem of dry blockage of the ink cartridge. Description of the Drawings

[0026] Figure 1 is a perspective view of the moisture-proof cover driving mechanism in an embodiment of the present utility model.

[0027] Figure 2 is Figure 1 a bottom view.

[0028] Figure 3 is an exploded view of the moisture-proof cover driving mechanism in an embodiment of the present utility model.

[0029] Figure 4 is a cross-sectional view of the moisture-proof cover driving mechanism in an embodiment of the present utility model.

[0030] Figure 5 is a bottom view of the second slider in an embodiment of the present utility model. Detailed Embodiment

[0031] The following further describes the present utility model in detail with reference to the embodiments of the drawings.

[0032] As Figures 1 to 5 shown, the moisture-proof cover driving mechanism in this embodiment includes a base 1, a first slider 2, a second slider 3, and a driving component 4.

[0033] The base 1 is fixedly arranged in the casing of the printer corresponding to the area position for ink cartridge maintenance in the printer. A first rack 11 is arranged on the base 1 along the left - right direction. The first rack 11 is integrally formed on the base 1 or the first rack 11 is an independent part and is fixed on the base 1 through a fixing structure. Specifically, the first rack 11 is arranged in the middle area of the base 1, and the teeth on the first rack 11 extend along the up - down direction.

[0034] The first slider 2 is arranged on the base 1 so as to move along the left - right and up - down directions.

[0035] The second slider 3 is arranged on the first slider 2 so as to move along the front - back direction. The second slider 3 can move relative to the base 1 in the left - right and up - down directions along with the movement of the first slider 2. A second rack 31 is arranged on the second slider 3 along the front - back direction. The second slider 3 is used to install the moisture - retaining cover 7, and then drive the moisture - retaining cover 7 to move so that the moisture - retaining cover 7 moves to the position of the ink cartridge, and then the nozzle on the ink cartridge is covered.

[0036] The driving component 4 is arranged on the first slider 2 and is in transmission connection with the base 1 and the second slider 3. Based on the relative structural relationship between the driving component 4 and the first slider 2, the base 1 and the second slider 3, when the carriage drives the first slider 2 to move rightward, it can drive the second slider 3 to move rightward, backward and upward, and then drive the moisture - retaining cover 7 to move to a position matching the ink cartridge.

[0037] Specifically, the driving component 4 in this embodiment includes a first gear 41 and a second gear 42 which are relatively stationary. In this embodiment, a shaft rod is vertically penetrated through the first slider 2, and both the first gear 41 and the second gear 42 are arranged on the shaft rod. Of course, according to needs, other structures can also be set to realize the synchronous rotation of the first gear 41 and the second gear 42, that is, to realize the relative stationary relationship between the first gear 41 and the second gear 42. The first gear 41 is located below the second gear 42. The first gear 41 meshes with the first rack 11, and the second gear 42 meshes with the second rack 31.

[0038] When the printer needs to perform maintenance work, the carriage moves to the right inside the printer housing. The carriage will touch the components set on the first slider 2, thereby pushing the first slider 2 to move to the right. Based on the positional relationship of the second slider 3 set on the first slider 2, it will also drive the first slider 2 to move synchronously to the right with the second slider 3. At the same time, with the rightward movement of the first slider 2, it will correspondingly drive the first gear 41 to rotate meshingly relative to the first rack 11. With the rotation of the first gear 41, based on the connection relationship of the shaft rod, the second gear 42 rotates synchronously with the first gear 41. Based on the meshing relationship between the second gear 42 and the first rack 11, it will drive the second slider 3 to move backward relative to the first slider 2, thereby making the second gear 42 in the front end position of the second slider 3.

[0039] The second gear 42 includes a first tooth part 421 and a second tooth part 422 distributed circumferentially. The second tooth part 422 is higher than the first tooth part 421. The arc length of the first tooth part 421 matches the length of the second rack 31, so as to match the distance that the second slider 3 moves backward relative to the first slider 2. In order to increase the stroke of the second slider 3 moving to the right, a third rack 32 is provided at the rear end of the second rack 31 on the second slider 3. The height of the third rack 32 is higher than that of the second rack 31 and meshes with the second tooth part 422.

[0040] In order to ensure the stability of the self-rotation of the second gear 42 when it moves to the front end of the second slider 3, a limiting column 423 is provided on the second tooth part 422. A limiting member 33 for restricting the self-rotation of the second gear 42 is provided at the front end of the second rack 31 on the second slider 3. A guiding groove 331 with a downward opening for the limiting column 423 to turn into is formed on the limiting member 33. Thus, when the second gear 42 is in the front end area of the second slider 3 and rotates self, the limiting column 423 will automatically enter the guiding groove 331, thereby maintaining the stability of the axis when the second gear 42 rotates self. When the limiting column 423 moves to the end of the guiding groove 331, the second gear 42 stops rotating.

[0041] In addition, in order to maintain the stability of the left and right movement of the first slider 2 relative to the base 1, first guiding holes 21 extending in the front and rear directions are oppositely provided on the left and right sides of the second slider 3 on the first slider 2. First guiding columns 34 placed in the corresponding first guiding holes 21 are respectively provided on the left and right side walls of the second slider 3. Through the relative limiting relationship between the first guiding columns 34 and the first guiding holes 21, the accuracy and stability of the left and right movement direction of the first slider 2 relative to the base 1 are ensured.

[0042] To ensure the effective contact coverage of the moisture-proof cover 7 on the ink cartridge nozzle, second guiding holes 12 extending in the left-right direction are respectively provided on the front and rear side surfaces of the base 1. The left end of the second guiding hole 12 is lower than the right end. Second guiding columns 22 respectively placed in the second guiding holes 12 are provided on the first slider 2. Based on the cooperation relationship between the second guiding columns 22 and the second guiding holes 12, when the first slider 2 moves rightward relative to the base 1, the first slider 2 also moves upward, and the second slider 3 also synchronously moves upward with the first slider 2. This facilitates the tight coverage of the moisture-proof cover 7 on the upper nozzle of the ink cartridge when the first slider 2 and the second slider 3 move into place, thereby realizing the moisture-proof function.

[0043] In addition, a third guiding hole 13 extending in the left-right direction is provided on the bottom surface of the base 1. A third guiding column 23 extending downward is provided on the first slider 2 and placed in the third guiding hole 13. Through the relative limiting relationship between the third guiding column 23 and the third guiding hole 13, the direction accuracy and stability of the left-right movement of the second slider 3 relative to the base 1 are ensured.

[0044] To realize the automatic reset of the first slider 2 and the second slider 3, a reset hole 14 is provided on the bottom surface of the base 1. The reset hole 14 extends in the left-right direction and gradually bends forward from left to right. A reset member 5 is swingably provided on the first slider 2 in the up-down direction, and the lower end of the reset member 5 is placed in the reset hole 14. A torsion spring 6 is provided between the first slider 2 and the reset member 5, and the torsion spring 6 has a tendency to drive the lower end of the reset member 5 to swing upward. When the carriage moves leftward and releases the backward pushing force on the first slider 2, based on the action of the torsion spring 6 and the bending structure of the reset hole 14, a downward and leftward pushing force is exerted on the first slider 2. At the same time, based on the height structure characteristics of the second guiding hole 12 and the cooperation relationship between the second guiding column 22 and the second guiding hole 12, the second guiding column 22 is caused to move leftward and slide downward in the second guiding hole 12. In addition, as the first slider 2 moves leftward, the second slider 3 is driven to move leftward accordingly. Moreover, based on the meshing relationship between the first gear 41 and the first rack 11, and the meshing relationship between the second gear 42 and the second rack 31, the first slider 2 and the second slider 3 are gradually reset. After resetting, the first slider 2 is in the left position of the base 1, the second slider 3 is in the left position of the base 1, and at the same time, the second slider 3 is in the front position of the first slider 2, that is, the initial positions of the first slider 2 and the second slider 3 are reached.

[0045] A printer, comprising a carriage, an ink cartridge arranged on the carriage, a moisture retaining cover 7 matched with the ink cartridge, and the aforementioned moisture retaining cover driving mechanism, wherein the moisture retaining cover 7 is elastically and vertically floatingly arranged on the second slider 3. Specifically, a bracket 8 is vertically movably arranged on the second slider 3, an elastic member 81 is arranged between the bracket 8 and the second slider 3, and the moisture retaining cover 7 is arranged on the bracket 8. The elastic member 81 can ensure the pressing degree of the nozzle on the ink cartridge when the moisture retaining cover 7 covers the nozzle of the ink cartridge, and improve the moisture retaining effect.

[0046] In addition, a scraper 9 is arranged on the second slider 3, and the scraper 9 is located behind the moisture retaining cover 7. During use, the scraper 9 moves driven by the second slider 3, so that the scraper 9 can scrape the residual ink on the nozzle of the ink cartridge.

[0047] In this embodiment, the operation process of the moisture retaining cover driving mechanism for driving the moisture retaining cover 7 is specifically as follows.

[0048] When the first slider 2 and the second slider 3 are in the initial state, the second gear 42 is in the initial position at the rear end of the second slider 3, and the second tooth part 422 just meshes with the upper part of the third rack 32. When performing the maintenance work on the nozzle of the ink cartridge, the carriage drives the ink cartridge thereon to move to the right. An interference member 25 that can interfere with the carriage is provided on the first slider 2. Thus, when the carriage contacts the interference member 25, it drives the first slider 2 to move to the right. As the first slider 2 moves to the right, it drives the second slider 3 to move to the right synchronously. At the same time, the first gear 41 rotates meshingly relative to the rack. As the first gear 41 rotates, the second gear 42 also rotates synchronously. When the second gear 42 rotates to the position where the first tooth part 421 meshes and rotates, the first tooth part 421 just meshes with the second rack 31. With the meshing transmission relationship between the second gear 42, the second rack 31, and the third rack 32, it drives the second slider 3 to move backward relative to the first slider 2. When the second gear 42 drives the second slider 3 to move backward so that the first tooth part 421 disengages from the second rack 31, the second gear 42 is just located in the front part of the second slider 3. At this time, based on the continuous rightward movement of the carriage, it drives the second gear 42 to rotate around its axis in the front part area of the second slider 3. As the second gear 42 continues to rotate, the second tooth part 422 approaches the front end position of the second rack 31. However, since the height of the second tooth part 422 is higher than the height of the first tooth part 421, there will be no meshing relationship with the second rack 31. Thus, the second rack 31 will not affect the continuous rotation of the second gear 42, correspondingly increasing the rotation stroke of the second gear 42. Correspondingly, the first gear 41 can continue to rotate, increasing the meshing stroke with the first rack 11. Correspondingly, the rightward movement stroke distance of the first slider 2 will be increased, and correspondingly, the rightward movement stroke distance of the second slider 3 will be increased. When the limit post 423 moves to the end of the guide groove 331, the second gear 42 stops rotating. Correspondingly, the first slider 2 and the second slider 3 reach the end position, and the second slider 3 also drives the moisture-proof cover 7 to the position covering the ink cartridge nozzle based on its backward movement relative to the first slider 2. At the same time, as described above, in this process, the second slider 3 also has an upward movement relative to the base 1, improving the effect of the moisture-proof cover 7 covering the ink cartridge nozzle.

[0049] In addition, based on the increase in the rightward movement stroke distance of the first slider 2, correspondingly, the difficulty of resetting the first slider 2 can be increased, ensuring the stability of the first slider 2 and the second slider 3 in the end position. Correspondingly, the relative position stability between the moisture-proof cover 7 and the ink cartridge is ensured, thus avoiding the problem of the ink cartridge drying and clogging. Correspondingly, for a printer applying this moisture-proof cover driving mechanism, the risk of ink cartridge failure is small, and the use reliability is high.

[0050] In the description and claims of the present utility model, terms indicating directions, such as "front", "rear", "upper", "lower", "left", "right", "side", "top", "bottom", etc., are used to describe various exemplary structural parts and elements of the present invention. However, the use of these terms here is only for the purpose of convenience of description and is determined based on the exemplary orientations shown in the drawings. Since the embodiments disclosed in the present invention can be arranged in different directions, these terms indicating directions are only for illustration and should not be regarded as limitations. For example, "upper" and "lower" are not necessarily limited to the directions opposite to or consistent with the direction of gravity.

Claims

1. A moisturizing cover driving mechanism, comprising a base (1) having a first rack (11) arranged in the left - right direction; a first slider (2) arranged on the base (1) to move in the left - right and up - down directions; a second slider (3) arranged on the first slider (2) to move in the front - back direction, and a second rack (31) arranged in the front - back direction is provided on the second slider (3) for mounting a moisturizing cover (7); It is characterized in that: It further includes a driving component (4) arranged on the first slider (2) and in transmission connection with the base (1) and the second slider (3); The driving component (4) includes a relatively stationary first gear (41) and a second gear (42), the first gear (41) meshes with the first rack (11), and the second gear (42) meshes with the second rack (31); The second gear (42) includes a first tooth portion (421) and a second tooth portion (422) distributed circumferentially, the second tooth portion (422) is higher than the first tooth portion (421), and the arc length of the first tooth portion (421) matches the length of the second rack (31).

2. The moisturizing cap driving mechanism according to claim 1, characterized in that: A third rack (32) is provided at the rear end of the second rack (31) on the second slider (3), and the height of the third rack (32) is higher than that of the second rack (31) and meshes with the second tooth portion (422).

3. The moisturizing cap driving mechanism according to claim 1, characterized in that: A limiting post (423) is provided on the second tooth portion (422), and a limiting member (33) for restricting the self - rotation of the second gear (42) is provided at the front end of the second rack (31) on the second slider (3), and a guiding groove (331) with a downward opening for the limiting post (423) to turn into is opened on the limiting member (33).

4. The moisturizing cap driving mechanism according to any one of claims 1 to 3, characterized in that: On the first slider (2), first guiding holes (21) extending in the front - back direction are oppositely arranged on the left and right sides of the second slider (3), and first guiding posts (34) placed in the corresponding first guiding holes (21) are respectively provided on the left and right side walls of the second slider (3).

5. The moisturizing cap driving mechanism according to any one of claims 1 to 3, characterized in that: Second guiding holes (12) extending in the left - right direction are respectively provided on the front and rear side surfaces of the base (1), and the left end of the second guiding hole (12) is lower than the right end; Second guiding posts (22) respectively placed in the second guiding holes (12) are provided on the first slider (2).

6. The moisturizing cap driving mechanism according to claim 5, characterized in that: Third guiding holes (13) extending in the left - right direction are provided on the bottom surface of the base (1), and third guiding posts (23) extending downward from the first slider (2) and placed in the third guiding holes (13) are provided.

7. The moisturizing cap driving mechanism according to claim 5, characterized in that: A reset hole (14) is opened on the bottom surface of the base (1), the reset hole (14) extends in the left - right direction and gradually bends forward from left to right; A reset member (5) is swingably provided on the first slider (2) in the up - down direction, and the lower end of the reset member (5) is placed in the reset hole (14); A torsion spring (6) is provided between the first slider (2) and the reset member (5), and the torsion spring (6) has a tendency to drive the lower end of the reset member (5) to swing upward.

8. A printer, comprising a carriage, an ink cartridge disposed on the carriage, and a moisture-proof cover (7) arranged to match the ink cartridge, wherein: It further includes the moisturizing cover driving mechanism according to any one of claims 1 to 7, and the moisturizing cover (7) is elastically floating up and down on the second slider (3).

9. The printer according to claim 8, characterized in that: A bracket (8) is movably provided on the second slider (3) in the up-and-down direction. An elastic member (81) is provided between the bracket (8) and the second slider (3). The moisture-proof cover (7) is arranged on the bracket (8).

10. The printer according to claim 8, characterized in that: A scraper (9) is provided on the second slider (3), and the scraper (9) is located behind the moisture-proof cover (7).

Images