Cover opening mechanism of thermal printer

Abstract

The utility model relates to the field of printers, and discloses a cover opening mechanism of a thermal printer, which comprises a machine body, a machine cover is arranged at the upper part of the machine body, cover opening assemblies are arranged on the left side and the right side of the machine body, each cover opening assembly comprises a shell, a limiting piece is arranged in the middle of each shell, and a connecting block is arranged at the rear part of each limiting piece. A limiting groove is formed in the side, away from the connecting block, of the shell, an operation groove is formed in the side, away from the machine cover, of the shell, a baffle is fixedly connected to the middle of the shell, a sliding opening is formed in the middle of the baffle, and a sliding groove is formed in the rear portion of the lower side of the inner wall of the operation groove. According to the utility model, the machine body is matched with the machine cover and the cover opening assembly, and the shell is matched with the limiting piece, the fixing block and the connecting block, so that the limiting block and the fixing block are not easy to abrade, the stability between the machine cover and the machine body can be better maintained, and the machine is more practical.

Description

Technical Field

[0001] The utility model relates to the field of printers, in particular to a cover opening mechanism of a thermal printer. Background Art

[0002] A thermal printer is a device that uses heat-sensitive technology to print. Its working principle is to heat the thermal paper or thermal ribbon on the print head, causing a chemical reaction on its surface, thus forming the desired image or text.

[0003] After searching, Chinese patent announcement number: CN217649155U discloses a new type of thermal intelligent cloud printer cover opening mechanism, including a printer body, a cover body, and a snap assembly that clamps the cover body to the printer body; one end of the printer body is provided with a cavity for placing thermal paper; one end of the cover body is movably connected to one end of the cavity; the snap assembly is installed at the other end of the cover body, used for fastening or opening the cover body to the printer body, and a card slot is provided at one end of the cavity near the snap assembly. The utility model realizes the locking of the cover body by setting the snap assembly and the card slot to be tightly fitted with each other, and the snap assembly is disengaged from the card slot by prying it. Conventional ordinary ear and card slot often get locked when unlocking. The snap assembly can effectively reduce the corresponding problem and improve the reliability of the product during use.

[0004] Although the above device can avoid the common locking situation of the ear and the slot when unlocking by setting the mutual cooperation between the buckle assembly and the slot, the thermal printer needs to open the cover more frequently because of the need to add printing paper. The frequent switching operations will cause wear on the buckle and the slot, which may easily cause the connection between the cover and the body to loosen, resulting in the cover being prone to shaking during use, affecting the normal use of the printer. When the lock occurs, although the slot can be opened by prying, the cover can be loosened and separated from the clamping assembly and the slot through its own elastic deformation, thereby achieving the purpose of unlocking. However, the slot is small in size and it is difficult to pry it open by hand without tools. Relying on tools may easily cause damage to the cover, which is not practical. Therefore, a thermal printer cover opening mechanism is proposed to solve the above problems. Utility Model Content

[0005] In order to make up for the above shortcomings, the utility model provides a thermal printer cover opening mechanism, which aims to improve the frequent switching operations in the prior art, which will cause wear on the buckles and slots, and easily cause the connection between the cover body and the body to loosen, thereby causing the cover body to shake easily during use, affecting the normal use of the printer and being not practical enough.

[0006] In order to achieve the above-mentioned purpose, the present invention adopts the following technical solution: a thermal printer cover opening mechanism, comprising a body, a cover is provided on the upper part of the body, and cover opening components are provided on the left and right sides of the body, and the cover opening component includes a shell, a limit member is provided in the middle part of the shell, and a connecting block is provided at the rear part of the limit member.

[0007] As a further description of the above technical solution:

[0008] A limiting groove is provided on the side of the shell away from the connecting block, an operating groove is provided on the side of the shell away from the machine cover, a baffle is fixedly connected to the middle of the shell, a sliding opening is provided in the middle of the baffle, and a sliding groove is provided on the lower rear side of the inner wall of the operating groove.

[0009] As a further description of the above technical solution:

[0010] The limiting component includes a limiting block, and the upper portion of the limiting block is slidably connected to the sliding port.

[0011] As a further description of the above technical solution:

[0012] The rear side of the limit block is fixedly connected to a connecting frame, the rear side of the connecting frame close to the baffle is fixedly connected to a protrusion, the side of the connecting frame away from the baffle is fixedly connected to a connecting rod, and the end of the connecting rod close to the baffle is fixedly connected to a positioning block.

[0013] As a further description of the above technical solution:

[0014] A positioning sleeve is fixedly connected to the middle of the connecting block, a connecting groove is provided in the middle of the positioning sleeve, the connecting rod is movably connected to it, a plurality of positioning grooves are provided in the middle of the connecting groove, the positioning block is movably connected to it, a groove is provided in the middle of the front side of the connecting block, the protrusion is slidably connected to it.

[0015] As a further description of the above technical solution:

[0016] A slider is fixedly connected to the bottom of the connecting block, the slider is slidably connected to the sliding groove, and a spring is fixedly connected between the slider and the sliding groove.

[0017] As a further description of the above technical solution:

[0018] The upper parts of the left and right sides of the body are both provided with mounting grooves adapted to the shell, and the cover opening assembly is movably connected with the mounting grooves.

[0019] As a further description of the above technical solution:

[0020] The left and right sides of the bottom front portion of the machine cover are fixedly connected with fixed blocks adapted to the limiting blocks, and the fixed blocks are movably connected to the limiting blocks and the limiting grooves.

[0021] The utility model has the following beneficial effects:

[0022] 1. In the present invention, by arranging the mutual cooperation between the machine body, the machine cover and the cover opening assembly, and by arranging the mutual cooperation between the shell and the limit piece, the fixing block and the connecting block, it is not easy to cause wear between the limit block and the fixing block, which can better maintain the stability between the machine cover and the machine body and is more practical.

[0023] 2. In the present invention, by providing a limiter and a connecting block, and by providing mutual cooperation between the connecting frame and the connecting rod, the positioning block and the positioning sleeve, when the cover opening assembly is stuck, the machine cover can be opened more gently and quickly. At the same time, by providing mutual cooperation between the mounting groove and the outer shell, the cover opening assembly is easier to remove and maintain, and is more practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic diagram of the overall three-dimensional structure of a thermal printer cover opening mechanism proposed by the present invention;

[0025] Figure 2 This is a schematic diagram of the three-dimensional structure of the cover opening mechanism of a thermal printer proposed in the utility model;

[0026] Figure 3 This is a schematic diagram of the partial three-dimensional structure of the body and cover of a thermal printer cover opening mechanism and the rear side of the cover opening assembly proposed by the present invention;

[0027] Figure 4 This is a schematic diagram of the three-dimensional structure of the cover opening assembly and the body of a thermal printer cover opening mechanism proposed by the present invention;

[0028] Figure 5 This is a schematic diagram of the upper three-dimensional structure of a cover opening assembly of a thermal printer cover opening mechanism proposed by the present invention;

[0029] Figure 6 This is a schematic diagram of the cross-sectional three-dimensional structure of the cover opening assembly shell of a thermal printer cover opening mechanism proposed by the present invention;

[0030] Figure 7 This is a schematic diagram of the overall three-dimensional structure of a limiting component of a cover opening mechanism of a thermal printer proposed in the present invention;

[0031] Figure 8 This is a schematic diagram of the overall three-dimensional structure of the connection block of the cover opening mechanism of a thermal printer proposed in the utility model;

[0032] Figure 9The utility model is a schematic diagram of the cross-sectional three-dimensional structure of a connection block of a thermal printer cover opening mechanism.

[0033] Legend:

[0034] 1. Machine body; 2. Machine cover; 3. Opening assembly; 31. Housing; 32. Limiting piece; 33. Connecting block; 311. Operating slot; 312. Limiting slot; 313. Baffle; 314. Slide; 315. Slide; 321. Limiting block; 322. Connecting frame; 323. Connecting rod; 324. Positioning block; 325. Protrusion; 331. Positioning sleeve; 332. Slider; 333. Connecting slot; 334. Positioning slot; 335. Groove; 336. Spring; 11. Mounting slot; 21. Fixing block. DETAILED DESCRIPTION

[0035] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0036] Reference Figure 1 - Figure 3 The present invention provides an embodiment of a thermal printer cover opening mechanism, comprising a body 1, which is the main body of the thermal printer. The upper left and right sides of the body 1 are provided with mounting grooves 11 adapted to the outer shell 31, which are used to cooperate with the installation of the cover opening assembly 3. The outer shell 31 and the mounting groove 11 can be fixed by bolts, and the cover opening assembly 3 is movably connected thereto. A cover 2 is provided on the upper part of the body 1, which is used to cooperate with the replacement of the thermal printer paper roll. The left and right sides of the bottom front of the cover 2 are fixedly connected with fixing blocks 21 adapted to the limit blocks 321. , which is L-shaped, and cooperates with the limit block 321 to cooperate with the switch of the machine cover 2. The fixed block 21 is movably connected with the limit block 321 and the limit groove 312. The left and right sides of the body 1 are provided with a cover opening component 3, which is used to cooperate with the switch of the machine cover 2 to ensure the normal use of the thermal printer. The cover opening component 3 includes a shell 31, which is used to cooperate with the connection of various components. A limit member 32 is provided in the middle of the shell 31, which is used to cooperate with the fixation of the fixed block 21. A connecting block 33 is provided at the rear of the limit member 32, which is used to cooperate with the connection between the limit member 32 and the shell 31.

[0037] like Figure 4 - Figure 6A limiting groove 312 is provided on the side of the shell 31 away from the connecting block 33, which is used to cooperate with the connection between the fixed block 21 and the limiting block 321. An operating groove 311 is provided on the side of the shell 31 away from the machine cover 2, which makes it convenient for the user to push the limiting member 32 to cooperate with the opening and closing of the machine cover 2. A baffle 313 is fixedly connected to the middle part of the shell 31, and a sliding mouth 314 is provided in the middle part of the baffle 313, which is used to cooperate with the connection between the limiting block 321 and the fixed block 21. A sliding groove 315 is provided on the lower rear part of the inner wall of the operating groove 311, which is used to cooperate with the movement and connection of the slider 332.

[0038] See also Figure 7 When the locking cam 330 is in the unlocked position, the locking cam 330 is in the unlocked position, and the winch 320 is in the unlocked position, so that the winch 320 can be unlocked.

[0039] like Figure 8 - Figure 9 When the locking cam 331 is unlocked, the locking cam 332 is unlocked and the winch 330 is unlocked, so that the winch 330 can be unlocked.

[0040] Working principle: To open the cover 2, push the two connecting frames 322 backwards by hand, and the connecting frame 322 will drive the limit block 321 connected to it to move backward. At the same time, the connecting block 33 connected to the connecting frame 322 will be driven to move backward. The slider 332 at the lower part of the connecting block 33 will slide in the slide groove 315. At the same time, the slider 332 will squeeze the spring 336. As the limit block 321 moves backward, the fixed block 21 will gradually lose the limit of the limit block 321. At this time, Open the machine cover 2. When you need to close the machine cover 2, you only need to push the connecting frame 322 backward again, and then press the machine cover 2 downward. When the fixing block 21 is inserted into the limiting groove 312, release the connecting frame 322. At this time, the spring 336 will push the slider 332 to reset, and the connecting block 33 connected to the slider 332 will be driven to reset, thereby pushing the limiting member 32 connected to it to reset, so that the limiting block 321 is stuck on the upper part of the fixing block 21, thereby fixing the fixing block 21 and completing the closing of the cover.

[0041] When the cam 321 is in the unlock state, the latch 325 is in the unlock state, and the latch 326 is in the unlock state, so the cam 326 can be unlocked by the latch 327. When the cam 321 is unlocked, the latch 326 can be unlocked by the latch 327.

[0042] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, 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 thermal printer cover opening mechanism, comprising a body (1), characterized in that: A cover (2) is provided on the upper portion of the machine body (1), and a cover opening assembly (3) is provided on both the left and right sides of the machine body (1). The cover opening assembly (3) comprises a shell (31), a limiting member (32) is provided in the middle portion of the shell (31), and a connecting block (33) is provided at the rear portion of the limiting member (32).

2. A thermal printer cover opening mechanism according to claim 1, characterized in that: A limiting groove (312) is provided on a side of the housing (31) away from the connecting block (33), an operating groove (311) is provided on a side of the housing (31) away from the machine cover (2), a baffle (313) is fixedly connected to the middle of the housing (31), a sliding opening (314) is provided in the middle of the baffle (313), and a sliding groove (315) is provided on the rear lower side of the inner wall of the operating groove (311).

3. The thermal printer cover opening mechanism according to claim 2, characterized in that: The limiting member (32) comprises a limiting block (321), and the upper portion of the limiting block (321) is slidably connected to the sliding opening (314).

4. The thermal printer cover opening mechanism according to claim 3, characterized in that: The rear side of the limiting block (321) is fixedly connected to a connecting frame (322); the rear side of the connecting frame (322) close to the baffle (313) is fixedly connected to a protrusion (325); the side of the connecting frame (322) away from the baffle (313) is fixedly connected to a connecting rod (323); the end of the connecting rod (323) close to the baffle (313) is fixedly connected to a positioning block (324).

5. The thermal printer cover opening mechanism according to claim 4, characterized in that: The middle of the connecting block (33) is fixedly connected to a positioning sleeve (331), the middle of the positioning sleeve (331) is provided with a connecting groove (333), the connecting rod (323) is movably connected to the connecting groove (333), the middle of the connecting groove (333) is provided with a plurality of positioning grooves (334), the positioning block (324) is movably connected to the connecting groove (333), the middle of the front side of the connecting block (33) is provided with a groove (335), the protrusion (325) is slidably connected to the connecting groove (333).

6. The thermal printer cover opening mechanism according to claim 5, characterized in that: The bottom of the connecting block (33) is fixedly connected with a slider (332), the slider (332) is slidably connected to the slide groove (315), and a spring (336) is fixedly connected between the slider (332) and the slide groove (315).

7. The thermal printer cover opening mechanism according to claim 1, characterized in that: The upper left and right sides of the body (1) are both provided with mounting grooves (11) adapted to the outer shell (31), and the cover opening assembly (3) is movably connected thereto.

8. The thermal printer cover opening mechanism according to claim 4, characterized in that: The left and right sides of the bottom front of the cover (2) are fixedly connected with fixed blocks (21) that are compatible with the limit blocks (321), and the fixed blocks (21) are movably connected to the limit blocks (321) and the limit slots (312).

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