Self-fixing cover opening and closing mechanism

Abstract

The utility model discloses a self-fixing cover opening and closing mechanism which comprises a box body and a cover body rotationally arranged on the box body, and the box body is provided with a cover body fixing assembly. The cover body fixing assembly comprises an opening fixing element and a closing locking element; the opening fixing element is matched with a rotating limiting element arranged on a rotating shaft of the cover body through a clamping tenon, so that the box body and the cover body form a temporary locking mechanism, and the cover body is kept in an opening state relative to the box body; the closing locking element comprises a guide column and a fixing buckle which are arranged on the two opposite sides of the opening of the box body, when the cover body is closed, the guide column slides along the inner wall of the cover body, and the fixing buckle is clamped into a fixing groove correspondingly formed in the inner wall of the cover body. After the box cover is opened, the opening fixing element keeps the box cover in a fixed state, when the box cover is closed, the box cover is shifted to release the fixed state, and in the box cover closing process, the closing locking element limits left-right shaking of the box cover and keeps the box cover in a closed state.

Description

Technical Field

[0001] This utility model relates to the field of inkjet printers, and in particular to a self-fixing opening and closing cover mechanism. Background Technology

[0002] The ink cartridge of an inkjet printer includes a printhead and an ink sac. The ink sac is a consumable item; after use, it is removed from the cartridge and a new ink sac is inserted. Patent publication number CN 217778127 U discloses a protective structure and ink cartridge. The protective structure includes: a cartridge body, a cover, a rotating shaft, and a torsion spring. The cartridge body defines a receiving cavity suitable for placing the ink sac, and the receiving cavity has a first fastening part. The cartridge body has a sliding groove. The rotating shaft is movably hinged to the sliding groove. The cover is connected to the rotating shaft to open or close the receiving cavity, and the cover has a second fastening part suitable for connecting the first fastening part. The torsion spring is sleeved on the rotating shaft, with one end connected to the cover and the other end abutting against the cartridge body. The torsion spring undergoes torsional deformation when the cover closes the receiving cavity, and after the torque is removed, it drives the cover to return to its original position. This makes the ink cartridge easy to open and close when replacing the ink sac, and the cover can automatically return to its original position.

[0003] The above structure enables the automatic closing of the cover. However, in practical applications, in order to keep the cover tightly closed during use, the torsion spring needs to have a large torque. This means that when opening the cover to change the ink cartridge, it is necessary to forcefully pry open the cover and maintain it. On the other hand, to make it easier to open the cover, the torsion spring torque needs to be small. This would result in insufficient closing force of the cover during use. Therefore, the existing structural solutions need to make trade-offs between different beneficial effects. Utility Model Content

[0004] The present invention aims to at least partially solve one of the technical problems in the aforementioned technologies. Therefore, the purpose of this invention is to provide a mechanism that allows the lid to remain open and the lid and box to remain closed after being closed, without the need for a torsion spring.

[0005] To achieve the above objectives, embodiments of this utility model provide a self-fixing opening and closing cover mechanism, comprising:

[0006] The box body and the lid rotatably mounted on the box body, the box body being provided with a lid fixing assembly;

[0007] The lid fixing assembly includes an opening fixing element and a closing locking element; the opening fixing element and the rotation limiting element provided on the lid rotating shaft are engaged by a latch to make the box and the lid form a temporary locking mechanism, and the lid is kept in the open state relative to the box.

[0008] The closing locking element includes guide posts and fixing buckles located on opposite sides of the opening of the box. When the cover is closed, the guide posts slide along the inner wall of the cover, and the fixing buckles engage with the corresponding fixing grooves on the inner wall of the cover.

[0009] According to the self-fixing opening and closing mechanism of this utility model embodiment, after the lid is opened, the opening fixing element keeps the lid in a fixed state. When closing, the lid is pushed to release the fixed state. During the closing process, the closing locking element restricts the left and right swaying of the lid and keeps the lid in a closed state. Compared with the existing structure, the torsion spring is no longer needed, and the lid can be opened and closed conveniently without overcoming the torsion force of the torsion spring.

[0010] In addition, the self-fixing opening and closing cover mechanism proposed in the above embodiments of this utility model may also have the following additional technical features:

[0011] Optionally, the opening and fixing element is a buckle, with a protrusion on the side of the buckle facing the pivot of the cover, and a groove on the cover for the protrusion to be engaged. When the cover is rotated, the groove is aligned with the protrusion, and the protrusion is engaged in the groove.

[0012] Optionally, the guide post is a cuboid with a ramp at the top for easy access to the cover; when the cover is closed, the cuboid enters the interior of the cover along its length and is interference-fitted with the inner wall of the cover.

[0013] Furthermore, the guide pillars are arranged in pairs, for a total of six sets, symmetrically positioned at the opening of the box.

[0014] Optionally, the fixing buckle is disposed in the hole formed at the opening of the box body, and one side of the fixing buckle protrudes outside the hole and is engaged in the fixing groove on the inner wall of the lid body.

[0015] Furthermore, the protruding side of the fixing buckle has a trapezoidal cross-section, corresponding to the fixing groove which is a trapezoidal cross-section groove. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the open state according to an embodiment of the present invention;

[0017] Figure 2 This is a partial cross-sectional view of a closed structure according to an embodiment of the present invention;

[0018] Figure 3 A partial view according to an embodiment of the present invention Figure 1 ;

[0019] Figure 4 A partial view according to an embodiment of the present invention Figure 2 .

[0020] Label Explanation:

[0021] Box 1, Opening and fixing element 11, Protrusion 111

[0022] Closing locking element 12, guide post 121, fixing buckle 122

[0023] Cover body 2 groove 211 fixing groove 212. Detailed Implementation

[0024] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0025] After the lid of this invention is opened, the opening fixing element keeps the lid in a fixed state. When closing, the lid is moved to release the fixing state. During the closing process, the closing locking element restricts the left and right shaking of the lid and keeps the lid in a closed state.

[0026] To better understand the above technical solutions, exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present invention are shown in the drawings, it should be understood that the present invention can be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided to enable a more thorough understanding of the present invention and to fully convey the scope of the present invention to those skilled in the art.

[0027] To better understand the above technical solutions, the following will provide a detailed explanation of the technical solutions in conjunction with the accompanying drawings and specific implementation methods.

[0028] Figures 1 to 4 A self-fixing opening and closing cover mechanism according to an embodiment of the present utility model includes:

[0029] Box 1 and cover 2 rotatably disposed on box 1, box 1 is provided with cover 2 fixing assembly;

[0030] The cover 2 fixing assembly includes an opening fixing element 11 and a closing locking element 12; the opening fixing element 11 and the rotation limiting element provided on the rotating shaft of the cover 2 are engaged by a tenon to make the box 1 and the cover 2 form a temporary locking mechanism, and the cover 2 remains open relative to the box 1.

[0031] Optionally, the opening and fixing element 11 is a buckle. The side of the buckle facing the pivot of the cover 2 forms a protrusion 111. The cover 2 is provided with a groove 211 for the protrusion 111 to be inserted. When the cover 2 rotates, the groove 211 is aligned with the protrusion 111, and the protrusion 111 is inserted into the groove 211.

[0032] The structure applied in this utility model is as follows: Figure 1As shown, in existing structures of this type, the consumables are replaced by opening the cover 2. Therefore, the cover 2 needs to be tightly closed on the box 1 most of the time. The existing structure therefore uses a torsion spring to keep the cover 2 closed. However, in addition to the large closing force of the torsion spring itself making it difficult to open, the torsion of the torsion spring will also decrease over time. Furthermore, the torsion spring itself can only provide rotational force and has no effect on lateral fixation.

[0033] In this invention, the opening and fixing element 11 only serves to fix the cover 2 after it is opened, and there is no resistance during the opening process; specifically, as follows: Figure 3 and Figure 4 As shown, the box body 1 is provided with a buckle, which is elastic; while the lid body 2 is provided with a rotation limiting element at the pivot position. The rotation limiting element includes a groove 211. Before the groove 211, there can be a ramp with a groove. Before the groove, there is an arc shape, and after the groove, there is a straight line. The ramp is composed of two sections. When the lid body 2 rotates, it first passes through the arc section, and the groove allows the buckle to pause briefly. This process makes the rotation of the lid body 2 have a segmented feel. The subsequent straight line section can push the buckle of the box body 1 backward to provide conditions for the buckle to pass over the top of the ramp. After the buckle passes over the top of the ramp, it quickly snaps into the groove 211 to fix the lid body 2.

[0034] The above process ultimately forms a temporary locking structure, which can both fix the position of the cover 2 and allow the cover 2 to be closed by external force.

[0035] The locking element 12 includes guide posts 121 and fixing buckles 122 located on opposite sides of the opening of the box body 1. When the box is closed, the guide posts 121 slide along the inner wall of the box and the fixing buckles 122 engage with the fixing grooves 212 provided on the inner wall of the box.

[0036] Specifically, the guide post 121 is a cuboid with a ramp at the top for easy access to the cover 2; when the cover 2 is closed, the cuboid extends along its length into the interior of the cover 2, forming an interference fit with the inner wall of the cover 2. Furthermore, the guide posts 121 are arranged in pairs, for a total of six sets, symmetrically positioned at the opening of the box 1, such as... Figure 2 As shown; with the aforementioned scheme, when the cover 2 is closed, the guide post 121 fills the gap between the cover 2 and the box 1, which can suppress the tendency of the cover 2 to sway left and right during use. Furthermore, by using multiple sets of guide posts 121, the cover 2 can be fixed at multiple points, resulting in a better fixing effect.

[0037] To facilitate the installation of guide posts 121 and fixing buckles 122, the opening of the box body 1 is narrowed inward or partially thinned to form a constricted opening that can enter the cover body 2. The guide posts 121 and fixing buckles 122 can be conveniently arranged outside the constricted opening.

[0038] Optionally, the fixing buckle 122 is disposed in the hole formed at the opening of the box body 1, with one side of the fixing buckle 122 protruding outside the hole and engaging with the fixing groove 212 on the inner wall of the lid body 2. Further, the protruding side of the fixing buckle 122 has a trapezoidal cross-section, corresponding to a trapezoidal cross-section groove in the fixing groove 212. The fixing buckle 122 and the fixing groove 212 cooperate to fix the box body 1 and the lid body 2 vertically, suppressing the tendency of the lid to rotate.

[0039] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0040] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0041] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. The illustrative expressions of the above terms in this specification should not be construed as necessarily referring to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. In addition, those skilled in the art can combine and integrate the different embodiments or examples described in this specification.

[0042] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A self-fixing opening and closing lid mechanism, characterized by: include The box body and the lid rotatably mounted on the box body, the box body being provided with a lid fixing assembly; The lid fixing assembly includes an opening fixing element and a closing locking element; the opening fixing element and the rotation limiting element provided on the lid rotating shaft are engaged by a latch to make the box and the lid form a temporary locking mechanism, and the lid is kept in the open state relative to the box. The closing locking element includes guide posts and fixing buckles located on opposite sides of the opening of the box. When the cover is closed, the guide posts slide along the inner wall of the cover, and the fixing buckles engage with the corresponding fixing grooves on the inner wall of the cover.

2. The self-fixing opening and closing cover mechanism as described in claim 1, characterized in that: The opening and fixing element is a buckle. The side of the buckle facing the pivot of the cover has a protrusion, and the cover has a groove for the protrusion to be engaged. When the cover is rotated, the groove is aligned with the protrusion, and the protrusion is engaged in the groove.

3. The self-fixating lid opening and closing mechanism according to claim 1, wherein: The guide post is a cuboid with a ramp at the top for easy access to the cover; when the cover is closed, the cuboid enters the interior of the cover along its length and is interference-fitted with the inner wall of the cover.

4. The self-fixating lid opening and closing mechanism according to claim 3, wherein: The guide pillars are arranged in pairs, with a total of six sets, symmetrically positioned at the opening of the box.

5. The self-securing lid opening and closing mechanism according to claim 1, wherein: The fixing buckle is disposed in the hole formed at the opening of the box body, and one side of the fixing buckle protrudes out of the hole and is inserted into the fixing groove on the inner wall of the lid body.

6. The self-fixating lid opening and closing mechanism according to claim 5, wherein: The protruding side of the fixing buckle has a trapezoidal cross section, corresponding to the trapezoidal cross section groove of the fixing groove.

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