Printing device

Abstract

The utility model discloses a printing device, which comprises a device main body provided with an accommodating cavity, and the accommodating cavity is provided with an opening on the surface of the device main body; one end of the cover body is provided with a first connecting part, the cover body can move along a first preset path, when the cover body is located at the starting end of the first preset path, the cover body covers the opening, and when the cover body is located at the tail end of the first preset path, the cover body and the opening are staggered; the elastic piece is arranged in the containing cavity, and the two ends of the elastic piece abut against the cover body and the device body respectively so as to apply elastic acting force to the cover body, so that the cover body can move towards the tail end of the first preset path. According to the printing device, the elastic piece is arranged in the device body, the elastic piece is compressed to accumulate the elastic force when the cover body is located at the starting end of the first preset path, and when the cover body is opened, the elastic force accumulated by the elastic piece acts on the cover body, so that the cover body can automatically move towards the tail end of the first preset path; and the problem that the cover body is stressed unevenly when the cover is opened is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of printing equipment, in particular to a printing device. Background Art

[0002] After unlocking the printer's cover and body, existing printers require the user to manually pry the cover open, resulting in a poor user experience. To address this issue, some manufacturers incorporate a tension spring at the connection between the cover and the base, applying force to the cover to facilitate opening. However, this structure is difficult to operate during assembly, and because the tension spring only partially engages the cover, uneven force is applied, resulting in unsatisfactory opening. Utility Model Content

[0003] The utility model aims to provide a printing device to solve the problem that when a printer uses an elastic member to open a cover, the cover opening condition is not ideal due to uneven force.

[0004] The utility model provides a printing device, comprising:

[0005] A device body, the device body having a receiving cavity, the receiving cavity forming an opening on a surface of the device body;

[0006] a cover having a first connecting portion at one end thereof, the cover being connected to the device body via the first connecting portion, the cover being movable along a first preset path, covering the opening when the cover is at the starting end of the first preset path, and being offset from the opening when the cover is at the end of the first preset path;

[0007] An elastic member is disposed in the accommodating cavity, with two ends of the elastic member respectively abutting against the cover body and the device body to apply an elastic force to the cover body so that the cover body can move toward the end of the first preset path.

[0008] A printing device as described above, wherein preferably, the first connecting portion includes a first end and a second end, the side wall of the accommodating cavity is provided with a second connecting portion, the first end of the first connecting portion is connected to the cover body, the second end of the first connecting portion is connected to the second connecting portion, and the second end of the first connecting portion can move along the first preset path.

[0009] A printing device as described above, wherein preferably, the second connecting part is a first fixed column arranged on the side wall of the accommodating cavity, the second end of the first connecting part is sleeved on the first fixed column, and the first preset path is a path rotating with the axis of the first fixed column as the center line.

[0010] A printing device as described above, wherein, preferably, a fixing portion is provided on the side wall of the accommodating cavity, the elastic member is provided on the fixing portion, the elastic member includes a first end and a second end, the first end of the elastic member abuts against the first connecting portion, and the second end of the elastic member abuts against the device body, and when the cover moves along the first preset path, the elastic member can move along the second preset path.

[0011] A printing device as described above, wherein preferably, the fixing portion is a second fixing column provided on the side wall of the accommodating cavity, the elastic member is sleeved on the second fixing column, and the second preset path is a path rotating with the axis of the second fixing column as the center line.

[0012] In the printing device as described above, preferably, a first limiting portion is provided on the first connecting portion, and the first limiting portion is used to limit the movable range of the first end of the elastic member.

[0013] In the printing device as described above, preferably, the first limiting portion is a first limiting groove provided on the first connecting portion, and the first end of the elastic member is at least partially located in the first limiting groove.

[0014] In the printing device as described above, preferably, a second limiting portion is provided in the device body, and the second limiting portion is used to limit the movable range of the second end of the elastic member.

[0015] In the printing device as described above, preferably, the second limiting portion is a second limiting groove provided on the device body, and the second end of the elastic member is at least partially located in the second limiting groove.

[0016] In the printing device as described above, preferably, a plurality of hanging holes are provided on a side of the device body facing away from the accommodating cavity.

[0017] Compared with the prior art, the printing device of the present invention is provided with an elastic member in the device body. The elastic member is compressed and accumulates elastic force when the cover body is located at the starting end of the first preset path. When the cover body is opened, the elastic force accumulated by the elastic member acts on the cover body, so that the cover body can automatically move to the end of the first preset path, thereby improving the problem of uneven force on the cover body when opening the cover, simplifying the operation, and improving the opening experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a three-dimensional diagram of the printing device provided by an embodiment of the present invention in a cover-open state from a first viewing angle;

[0019] Figure 2 yes Figure 1 A magnified view of the middle part A;

[0020] Figure 3 This is a perspective view of the second viewing angle of the printing device provided by an embodiment of the present invention in an open cover state;

[0021] Figure 4 This is a perspective view of the printing device provided by an embodiment of the present invention in the open cover state from a third viewing angle;

[0022] Figure 5 It is a three-dimensional diagram of the device body provided by an embodiment of the present utility model;

[0023] Figure 6 yes Figure 5 Enlarged view of the middle part B;

[0024] Figure 7 It is a three-dimensional diagram of the printing device provided by an embodiment of the present utility model in a closed state.

[0025] Description of reference numerals:

[0026] 10 - device body, 11 - accommodating chamber, 12 - opening, 13 - position-limiting fitting portion, 131 - second protrusion, 132 - third protrusion, 14 - second connecting portion, 141 - first fixing column, 15 - second position-limiting portion, 16 - paper compartment, 17 - locking portion, 18 - hanging hole;

[0027] 20 - cover, 21 - first connecting portion, 211 - connecting hole, 212 - first limiting portion, 22 - third limiting portion, 221 - first protrusion, 23 - first groove, 24 - pressure roller;

[0028] 30-elastic member, 31-torsion spring;

[0029] 40-fixing portion, 41-second fixing column;

[0030] 50-fixed cover, 51-second groove;

[0031] 60-print head;

[0032] 70-Paper outlet. DETAILED DESCRIPTION

[0033] The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0034] Reference Figures 1 to 7 As shown, the present invention provides a printing device, including a device body 10, a cover 20 and an elastic member 30, wherein:

[0035] The device body 10 has a accommodating cavity 11, which forms an opening 12 on the surface of the device body 10. There is a paper bin 16 in the accommodating cavity 11. When the accommodating cavity 11 is in an open state, the user can install the printing medium into the paper bin 16, or remove the printing medium from the paper bin 16.

[0036] One end of the cover 20 has a first connection portion 21, which connects the cover 20 to the device body 10 via the first connection portion 21. The cover 20 is movable to open or close the accommodating cavity 11. The cover 20 can move along a first predetermined path. When the cover 20 is at the beginning of the first predetermined path, the cover 20 covers the opening 12, and the accommodating cavity 11 is closed. When the cover 20 is at the end of the first predetermined path, the cover 20 is offset from the opening 12, and the accommodating cavity 11 is open.

[0037] The elastic member 30 is arranged in the accommodating cavity 11, and the two ends of the elastic member 30 are respectively in contact with the cover body 20 and the device body 10. In the process of the cover body 20 moving toward the starting end of the first preset path, the elastic member 30 is elastically deformed by the external force and accumulates elastic force. When the cover body 20 is opened, the elastic force accumulated by the elastic member 30 acts on the cover body 20, so that the cover body 20 can move to the end of the first preset path, thereby realizing the automatic movement of the cover body 20 until the accommodating cavity 11 is opened.

[0038] Reference Figure 3 as well as Figure 4 As shown, the device body 10 is provided with a locking portion 17. When the cover 20 is located at the starting end of the first preset path, the locking portion 17 locks the cover 20 with the device body 10. When the locking portion 17 releases the locking state of the cover 20 and the device body 10, the elastic member 30 applies an elastic force to the cover 20, driving the cover 20 to move toward the end of the first preset path, thereby achieving automatic opening of the cover, convenient operation, and improving the opening experience. The locking portion 17 can adopt a structure or component that can lock the device body 10 and the cover 20 in the prior art, and will not be described in detail here.

[0039] In order to make the opening process more stable, in the embodiment provided in the present application, the first connecting parts 21 include two, which are arranged on opposite sides of one end of the cover body 20, and two elastic members 30 are provided in the device body 10, each elastic member 30 corresponds to a first connecting part 21. Under the joint action of the two elastic members 30, when the cover body 20 moves to the end of the first preset path, the force on both ends of the cover body 20 is uniform, ensuring that the opening process can proceed smoothly.

[0040] Reference Figure 2 as well as Figure 6As shown, the first connecting portion 21 includes a first end and a second end, and the side wall of the accommodating cavity 11 is provided with a second connecting portion 14. The first end of the first connecting portion 21 is connected to the cover body 20, and the second end of the first connecting portion 21 is connected to the second connecting portion 14, thereby realizing the connection between the cover body 20 and the device body 10. The second end of the first connecting portion 21 can move along the first preset path, and when the cover body 20 moves along the first preset path at the second end of the first connecting portion 21, it moves synchronously along the first preset path.

[0041] In a feasible embodiment, the second connecting part 14 is a first fixing column 141 provided on the side wall of the accommodating cavity 11. The first fixing column 141 is a cylinder provided on the side wall of the accommodating cavity 11 and extending into the interior of the accommodating cavity 11. The second end of the first connecting part 21 is provided with a connecting hole 211, and the connecting hole 211 is sleeved on the first fixing column 141, thereby realizing the connection between the first connecting part 21 and the second connecting part 14.

[0042] The first preset path is a path of rotation with the axis of the first fixing post 141 as the center line, so the cover 20 can rotate with the axis of the first fixing post 141 as the center line to achieve closing and opening of the paper bin 16.

[0043] Further, continue to refer to Figure 2 as well as Figure 6 As shown, the side wall of the accommodating cavity 11 is provided with a fixing portion 40, and the elastic member 30 is provided on the fixing portion 40. The elastic member 30 includes a first end and a second end. The first end of the elastic member 30 abuts against the first connecting portion 21, and the second end of the elastic member 30 abuts against the device body 10. When the cover body 20 moves along the first preset path, the elastic member 30 can move along the second preset path. Specifically, the fixing portion 40 is a second fixing column 41 provided on the side wall of the accommodating cavity 11. The second fixing column 41 and the first fixing column 141 are provided on the same side wall of the accommodating cavity 11, and the second fixing column 41 is a cylinder whose extension direction is parallel to the first fixing column 141. The second preset path is a path of rotation with the axis of the second fixing column 41 as the center line. The middle section of the elastic member 30 is sleeved on the second fixing column 41. During the rotation of the cover body 20 along the first preset path, the elastic member 30 rotates along the second preset path. When the cover body 20 is located at the starting end of the first preset path, the elastic member 30 is located at the starting end of the second preset path and accumulates elastic force. When the cover body 20 is located at the end of the first preset path, the elastic member 30 is located at the end of the second preset path. When the elastic member 30 moves toward the end of the second preset path, it applies elastic force to the cover body 20, so that the cover body 20 moves toward the end of the first preset path.

[0044] Preferably, the elastic member 30 is a torsion spring 31, the center of the torsion spring 31 is sleeved on the second fixed column 41, and the torsion spring 31 can rotate with the axis of the second fixed column 41 as the center line. The two ends of the torsion spring 31 are respectively against the first connecting part 21 and the device body 10. When the torsion spring 31 rotates toward the starting end of the second preset path, the two ends of the torsion spring 31 undergo elastic deformation to accumulate elastic force. When the torsion spring 31 moves toward the end of the second preset path, the two ends of the torsion spring 31 apply the accumulated elastic force to the cover body 20 to drive the cover body 20 to move toward the end of the first preset path.

[0045] In other embodiments, the elastic member 30 may be other structures or components that can drive the cover 20 to automatically move toward the end of the first preset path, which is not limited here.

[0046] Since the cover body 20 is driven by the elastic force of the elastic member 30 to move toward the end of the first preset path, and the two ends of the elastic member 30 are respectively in contact with the first connecting portion 21 and the device body 10, the positions of the two ends of the elastic member 30 are prone to shift during the movement, resulting in a change in the direction of the elastic force, and then the cover body 20 will shake during the opening process, thereby affecting the stability of the printing device structure.

[0047] To solve the above problems, refer to Figure 2 As shown, in the embodiment provided by the present application, a first limiting portion 212 is provided on the first connecting portion 21, and the first limiting portion 212 is used to limit the range of movement of the first end of the elastic member 30. A second limiting portion 15 is provided in the device body 10, and the second limiting portion 15 is used to limit the range of movement of the second end of the elastic member 30. The first limiting portion 212 and the second limiting portion 15 limit the ends of the elastic member 30, which can improve the stability of the rotation of the cover body 20.

[0048] In a feasible embodiment, the first limiting portion 212 is a first limiting groove provided on the first connecting portion 21, and the first end of the elastic member 30 is at least partially located in the first limiting groove. The first end of the elastic member 30 abuts the first limiting groove. When the elastic member 30 rotates along the second preset path, the first end of the elastic member 30 moves in the first limiting groove and always abuts against the first limiting groove. Similarly, the second limiting portion 15 is a second limiting groove provided on the device body 10, and the second end of the elastic member 30 is at least partially located in the second limiting groove. When the elastic member 30 rotates along the second preset path, the second end of the elastic member 30 moves in the second limiting groove and always abuts against the second limiting groove. As a result, the two ends of the elastic member 30 can only move back and forth within a limited range, thereby allowing the cover body 20 to rotate stably.

[0049] In another feasible embodiment, at least one of the two ends of the elastic member 30 is fixedly connected to the first connecting portion 21 or the device body 10, and the other end of the elastic member 30 abuts against the device body 10 or the first connecting portion 21, which can also limit the position displacement of the elastic member 30 when it moves along the second preset path.

[0050] In other embodiments, other structures or components that can prevent the elastic member 30 from shifting at both ends during movement along the second preset path may be used, and are not limited here.

[0051] Since the printing device of this application needs to be hung for use, refer to Figure 4 As shown, the side of the device body 10 facing away from the accommodating chamber 11 is provided with a plurality of hanging holes 18. These holes 18 allow the printing device to be hung in any convenient location for user operation. Preferably, two hanging holes 18 are provided, one on opposite sides of the bottom of the printing device, so that the printing device can be stably hung on a wall or other location. The number of hanging holes 18 can be selected based on factors such as the hanging location and the size of the printing device, and is not limited here.

[0052] When the printing medium needs to be replaced, since the printing device is in a suspended position, after the cover is opened, the cover body 20 is at the end of the first preset path. Under the action of gravity, the cover body 20 will move toward the starting end of the first preset path. In order to prevent the cover body 20 from falling, the user needs to hold the cover body 20 and then replace the printing medium, which is inconvenient to operate and the user experience is poor.

[0053] In order to solve the above problems, in the embodiments provided in this application, Figure 2 As shown, a third limiting portion 22 is provided on the first connecting portion 21, and a limiting matching portion 13 is provided in the accommodating cavity 11. When the cover body 20 is located at the end of the first preset path, a limiting match is formed between the third limiting portion 22 and the limiting matching portion 13 to prevent the cover body 20 from moving toward the starting end of the first preset path under the action of gravity, so that during the process of replacing the printing medium, the cover body 20 can be maintained at the end of the first preset path and cannot fall, which is convenient for user operation and helps to improve user experience.

[0054] Reference Figure 6 As shown, the two opposite side walls of the accommodating cavity 11 are provided with a limiting fitting portion 13, and the two first connecting portions 21 are provided with a third limiting portion 22. Under the joint action of the third limiting portions 22 and the limiting fitting portions 13 on both sides, after the cover body 20 reaches the end of the first preset path, it can more stably maintain the state of being at the end of the first preset path, thereby preventing the two sides of the cover body 20 from falling due to uneven force.

[0055] In the embodiments provided in this application, refer to Figure 2as well as Figure 6 As shown, the third limiting portion 22 is arranged in the connecting hole 211 at the second end of the first connecting portion 21, and the connecting hole 211 rotates with the axis of the first fixing column 141 as the center line to realize the rotation of the cover body 20. When the connecting hole 211 rotates to the point where the third limiting portion 22 forms a limiting fit with the limiting fitting portion 13, the rotation can be stopped, so that the cover body 20 remains at the end of the first preset path.

[0056] Furthermore, the third position-limiting portion 22 is a first protrusion 221 provided on the inner wall surface of the connecting hole 211, and the first protrusion 221 extends along the axis of the connecting hole 211. The position-limiting mating portion 13 includes a second protrusion 131 and a third protrusion 132. The second protrusion 131 is provided at the end of the first fixing post 141 along the axis of the first fixing post 141, and the third protrusion 132 is provided on the outer circumferential surface of the second protrusion 131 closest to the cover body 20. The extension direction of the third protrusion 132 is perpendicular to the axis of the first fixing post 141. When the cover body 20 is at the starting end of the first preset path, the third protrusion 132 is closer to the cover body 20 than the first protrusion 221, and there is no connection relationship between the first protrusion 221 and the third protrusion 132. When the connecting hole 211 rotates to drive the cover body 20 to move toward the end of the first preset path, the first protrusion 221 rotates synchronously with the connecting hole 211. After the first protrusion 221 passes over the third protrusion 132, the cover body 20 moves to the end of the first preset path, and the first protrusion 221 abuts against the third protrusion 132 to form a limit fit, thereby limiting the cover body 20 from moving toward the starting end of the first preset path.

[0057] In order to enable the cover body 20 to move smoothly along the first preset path, the length of the first protrusion 221 extending along the axial direction of the connecting hole 211 should be smaller than the height of the connecting hole 211 along its axial direction, so that part of the inner wall surface of the connecting hole 211 can fit with the outer peripheral surface of the first fixing column 141, thereby enabling the connecting hole 211 to rotate smoothly along the outer peripheral surface of the first fixing column 141.

[0058] The length of the third protrusion 132 extending from the outer circumference of the second protrusion 131 cannot be too long, otherwise it will affect the rotation of the connecting hole 211. Figure 6 As shown, the third protrusion 132 extends along the axial direction perpendicular to the first fixing column 141 to be flush with the outer periphery of the first fixing column 141. On the one hand, when the first protrusion 221 rotates to the position of the third protrusion 132, under the action of external force, the first protrusion 221 can pass over the third protrusion 132 and resist against the third protrusion 132. On the other hand, cost is saved under the premise of being able to achieve limited cooperation.

[0059] Reference Figure 1 、 Figure 3 as well as Figure 7As shown, in the embodiment provided by the present application, the printing device further includes a fixed cover 50, which is disposed on the device body 10 and is offset from the opening 12. The cover 20 has a first groove 23 on the end away from the first connecting portion 21, and a rotatable pressure roller 24 is provided on the side opposite the first groove 23. The fixed cover 50 has a second groove 51 on the side near the accommodating chamber 11. A print head 60 is provided on the side wall of the accommodating chamber 11 near the fixed cover 50. When the cover 20 is at the starting end of the first preset path, the first groove 23 connects with the second groove 51 to enclose a paper outlet 70. The pressure roller 24 is located in the accommodating chamber 11 and is close to the print head 60. When the printing device is printing, the print medium is located between the pressure roller 24 and the print head 60. The pressure roller 24 presses the print medium toward the print head 60. At the same time, the pressure roller 24 conveys the print medium by rotating. The printed print medium is output from the paper outlet 70.

[0060] Based on the above embodiments, the process of closing and opening the cover of the printing device of the present invention is as follows:

[0061] Closing the cover: The user applies external force to the cover 20, causing the cover 20 to move toward the starting end of the first preset path. During the movement, the elastic member 30 is compressed and elastically deformed to accumulate elastic force. When the cover 20 moves to the end of the first preset path, the locking portion 17 locks the cover 20 and the device body 10, and the printing device can perform printing operations.

[0062] Opening the cover: First, the locking state between the cover body 20 and the device body 10 is released by the locking part 17, and the elastic member 30 applies the accumulated elastic force to the cover body 20, driving the cover body 20 to move toward the end of the first preset path. When the cover body 20 moves to the end of the first preset path, the third limiting part 22 on the first connecting part 21 forms a limiting fit with the limiting fitting part 13 in the device body to prevent the cover body 20 from moving toward the starting end of the first preset path, thereby keeping the printing device in the open state.

[0063] The above describes in detail the structure, features and effects of the present invention based on the embodiments shown in the drawings. The above is only a preferred embodiment of the present invention, but the scope of implementation of the present invention is not limited to what is shown in the drawings. Any changes made in accordance with the concept of the present invention, or modifications to equivalent embodiments with equivalent changes, which do not exceed the spirit covered by the description and drawings, should be within the scope of protection of the present invention.

Claims

1. A printing device, characterized in that: include: A device body, the device body having a receiving cavity, the receiving cavity forming an opening on a surface of the device body; a cover having a first connecting portion at one end thereof, the cover being connected to the device body via the first connecting portion, the cover being movable along a first preset path, covering the opening when the cover is at the starting end of the first preset path, and being offset from the opening when the cover is at the end of the first preset path; An elastic member is disposed in the accommodating cavity, with two ends of the elastic member respectively abutting against the cover body and the device body to apply an elastic force to the cover body so that the cover body can move toward the end of the first preset path.

2. The printing device according to claim 1, wherein The first connecting portion includes a first end and a second end. The side wall of the accommodating cavity is provided with a second connecting portion. The first end of the first connecting portion is connected to the cover body, and the second end of the first connecting portion is connected to the second connecting portion. The second end of the first connecting portion can move along the first preset path.

3. The printing device according to claim 2, wherein: The second connecting portion is a first fixing column provided on the side wall of the accommodating cavity, the second end of the first connecting portion is sleeved on the first fixing column, and the first preset path is a path rotating with the axis of the first fixing column as the center line.

4. The printing device according to claim 1, wherein The side wall of the accommodating cavity is provided with a fixing portion, and the elastic member is provided on the fixing portion. The elastic member includes a first end and a second end. The first end of the elastic member abuts against the first connecting portion, and the second end of the elastic member abuts against the device body. When the cover moves along the first preset path, the elastic member can move along the second preset path.

5. The printing device according to claim 4, characterized in that The fixing portion is a second fixing column provided on the side wall of the accommodating cavity, the elastic member is sleeved on the second fixing column, and the second preset path is a path rotated with the axis of the second fixing column as the center line.

6. The printing device according to claim 4, characterized in that A first limiting portion is provided on the first connecting portion, and the first limiting portion is used to limit the movable range of the first end of the elastic member.

7. The printing device according to claim 6, characterized in that The first limiting portion is a first limiting groove provided on the first connecting portion, and the first end of the elastic member is at least partially located in the first limiting groove.

8. The printing device according to claim 4, wherein: A second limiting portion is provided in the device body, and the second limiting portion is used to limit the movable range of the second end of the elastic member.

9. The printing device according to claim 8, characterized in that The second limiting portion is a second limiting groove provided on the device body, and the second end of the elastic member is at least partially located in the second limiting groove.

10. The printing device according to claim 1, wherein A plurality of hanging holes are provided on a side of the device body facing away from the accommodating cavity.

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