Novel thermal printer

Abstract

The novel thermal printer comprises a flip cover, a middle frame and a torsion spring, the outer side of the flip cover is provided with a first positioning groove and a first positioning shaft, and the first positioning groove is located at the upper part of the first positioning shaft; a first positioning hole and a second positioning groove are formed in the middle frame, and the first positioning hole is used for fixing the first positioning shaft; the torsion spring is provided with a first torsion arm and a second torsion arm, the first torsion arm can abut against the first positioning groove, and the second torsion arm can abut against the second positioning groove. The turning cover and the middle frame are provided with the positioning grooves respectively, the two ends of the torsional spring are clamped with the positioning grooves so that the positioning shaft on the turning cover can be smoothly guided into the shaft hole of the middle frame, the turning cover can be disassembled only by pushing the turning cover out in the opposite direction, and therefore the machine can be maintained more easily, daily cleaning and inspection of a user are facilitated, and the working efficiency is improved. And the problem that noise may be generated by a traditional torsional spring connection mode is avoided, so that the printer is more quiet when the flip cover is opened or closed, and the user experience is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of thermal printers, and particularly relates to a new type of thermal printer. Background Art

[0002] In the design and manufacture of thermal desktop label printers, the assembly of the printer middle frame and the flip cover is an important link. Most of the traditional printers connect the middle frame and the flip cover by using a torsion spring connection method. This design relies on the elastic force of the torsion spring to push the flip cover to open. Although it can achieve the function of automatic opening to a certain extent, there are some obvious disadvantages in actual applications. The existing torsion spring connection method leads to a cumbersome assembly process. During the assembly process, precise position adjustment of the torsion spring is required, which increases the assembly difficulty. For the workers on the production line, not only a high technical level is needed, but also the product failure rate may increase due to improper assembly. Secondly, during the use of the printer, due to the repeated action of the torsion spring, noise is easily generated. Especially in an office environment with frequent use, this continuous noise will cause certain interference to the user and reduce the user experience; in addition, the torsion spring may show fatigue after long-term use, resulting in weakened elasticity, which in turn affects the smoothness of the flip cover opening. In addition, during the maintenance or replacement of consumables of the printer, the traditional assembly method also brings inconvenience to the user because the complex disassembly and assembly process often requires professional tools and technical support, increasing the user's usage cost. Content of the Utility Model

[0003] In order to overcome the deficiencies of the prior art, the purpose of the utility model is to provide a new type of thermal printer, which simplifies the assembly structure between the printer middle frame and the flip cover, making the assembly process more convenient and without obvious noise generation.

[0004] To solve the above problems, the technical solution adopted by the utility model is as follows: A new type of thermal printer, comprising:

[0005] A flip cover, on the outer side of which there are a first positioning groove and a first positioning shaft, and the first positioning groove is located above the first positioning shaft;

[0006] A middle frame, inside which there are a first positioning hole and a second positioning groove, and the first positioning hole is used to fix the first positioning shaft;

[0007] A torsion spring, which has a first torsion arm and a second torsion arm, the first torsion arm can abut against the first positioning groove, and the second torsion arm can abut against the second positioning groove.

[0008] Compared with the prior art, the beneficial effects of the present utility model are as follows: positioning grooves are respectively arranged on the flip cover and the middle frame, and both ends of the torsion spring are clamped with the positioning grooves to smoothly introduce the positioning shaft on the flip cover into the shaft hole of the middle frame. When disassembling, it only needs to be pushed out in the opposite direction to complete the disassembly. This not only makes the machine maintenance easier, but also facilitates the daily cleaning and inspection of users, and avoids the problem of possible noise generated by the traditional torsion spring connection method, making the printer quieter when opening or closing the flip cover and improving the user experience.

[0009] For the above-mentioned thermal printer, support plates are arranged on both the left and right sides inside the flip cover, and a third positioning groove is arranged at the front part of the support plate for positioning the flip cover and the middle frame.

[0010] For the above-mentioned thermal printer, a hook part is arranged at one end of the first torsion arm, the shape of the hook part is square, and the hook part can abut against the first positioning groove.

[0011] For the above-mentioned thermal printer, a positioning post for embedding the third positioning groove is arranged between the inner wall of the middle frame and the second positioning groove. When the flip cover rotates downward and closes on the middle frame by using the first positioning shaft through the support plate, the positioning post is embedded in the third positioning groove.

[0012] For the above-mentioned thermal printer, the third positioning groove is a square groove.

[0013] For the above-mentioned thermal printer, the second positioning groove includes a first baffle and a second baffle, and the first baffle and the second baffle are arranged in parallel.

[0014] For the above-mentioned thermal printer, the end of the second torsion arm can be clamped between the first baffle and the second baffle.

[0015] For the above-mentioned thermal printer, a reinforcing rib is arranged on the inner wall surface of the middle frame, and an inclined angle is arranged on one side of the reinforcing rib to facilitate the clamping of the flip cover to the middle frame.

[0016] For the above-mentioned thermal printer, an installation guide groove is further arranged on the inner wall of the middle frame, and the first positioning hole is located in the installation guide groove.

[0017] For the above-mentioned thermal printer, the reinforcing rib is made of an elastic material. Description of the Drawings

[0018] Figure 1 It is an exploded view of the structure of the thermal printer according to the embodiment of the present utility model;

[0019] Figure 2 It is an enlarged view of the structure of the middle frame of the thermal printer according to the embodiment of the present utility model;

[0020] Figure 3 It is a partially enlarged view of the thermal printer according to the embodiment of the present utility model;

[0021] Explanation of the reference numerals in the drawings: 100 flip cover, 110 first positioning groove, 120 first positioning shaft, 130 support plate, 131 third positioning groove, 140 positioning post, 200 middle frame, 210 first positioning hole, 220 second positioning groove, 221 first baffle, 222 second baffle, 230 reinforcing rib, 231 bevel, 240 installation guiding groove, 300 torsion spring, 310 first torsion arm, 311 hook portion, 320 second torsion arm. Detailed implementation manners

[0022] The embodiments of the present utility model will be described in detail below. Referring to Figures 1 to 3 , the embodiments of the present utility model provide a new type of thermal printer, including: a flip cover 100, a middle frame 200 and a torsion spring 300. The outer side of the flip cover 100 is provided with a first positioning groove 110 and a first positioning shaft 120, and the first positioning groove 110 is located above the first positioning shaft 120; the inside of the middle frame 200 is provided with a first positioning hole 210 and a second positioning groove 220, and the first positioning hole 210 is used to fix the first positioning shaft 120; the torsion spring 300 has a first torsion arm 310 and a second torsion arm 320. The first torsion arm 310 can abut against the first positioning groove 110, and the second torsion arm 320 can abut against the second positioning groove 220. The present utility model proposes that positioning grooves are respectively provided on the flip cover 100 and the middle frame 200, and the two ends of the torsion spring 300 are clamped with the positioning grooves to enable the positioning shaft 120 on the flip cover 100 to be smoothly introduced into the shaft hole of the middle frame 200. When disassembling, it only needs to be pushed out in the opposite direction to complete the disassembly. This not only makes the machine maintenance easier, but also facilitates the daily cleaning and inspection of users, and avoids the problem of possible noise generated by the traditional torsion spring connection method, making the printer quieter when opening or closing the flip cover 100 and improving the user experience.

[0023] Further, referring to Figure 1 , the torsion spring 300 is connected to the flip cover 100 and the middle frame 200 by being clamped in the first positioning groove 110 and the second positioning groove 220. Of course, the middle environmental spring coil of the torsion spring 300 is fixed on the flip cover 100. The present utility model does not limit the specific position where the spring coil of the torsion spring 300 is fixed to the flip cover 100. Further, one end of the first torsion arm 310 of the torsion spring 300 is provided with a hook portion 311, and the shape of the hook portion 311 is square, and the hook portion 311 can abut against the first positioning groove 110. Further, referring to Figure 3, the second positioning groove 220 includes a first baffle 221 and a second baffle 222. The first baffle 221 and the second baffle 222 are arranged in parallel. The end of the second torsion arm 320 can be caught between the first baffle 221 and the second baffle 222. The first torsion arm 310 of the torsion spring 300 is fixed on the flip cover 100, and the second torsion arm 320 of the torsion spring 300 is fixed on the middle frame 200. Further, support plates 130 are provided on both the left and right sides inside the flip cover 100. A third positioning groove 131 is provided at the front of the support plate 130. The third positioning groove 131 is used to position the flip cover 100 and the middle frame 200. Preferably, there are two support plates 130. Further, a positioning post 140 for the third positioning groove 131 to be embedded is provided between the inner wall of the middle frame 200 and the second positioning groove 220. When the flip cover 100 rotates downward and closes on the middle frame 200 by using the first positioning shaft 120 through the support plate 130, the positioning post 140 is embedded in the third positioning groove 131. Of course, the present invention does not limit the specific structure of the third positioning groove 131. Preferably, the structure of the third positioning groove 131 is the same as the external structure of the positioning post 140. The positioning post 140 is clamped in the positioning groove for fixing after the flip cover 100 and the middle frame 200 are clamped together.

[0024] Further, referring to Figure 2 , a reinforcing rib 230 is provided on the inner wall surface of the middle frame 200. An inclined angle 231 is provided on one side of the reinforcing rib 230. The inclined angle 231 facilitates the flip cover 100 to be clamped to the middle frame 200. The reinforcing rib 230 is used to increase the strength of the inner edge of the printer middle frame 200. Of course, the present invention does not limit the specific number of the reinforcing ribs 230. Preferably, the number of the reinforcing ribs 230 is more than two. The inclined angle 231 is used to enable the flip cover 100 to smoothly snap into the middle frame 200 when the first positioning shaft 120 of the flip cover 100 is clamped with the first positioning hole 210 of the middle frame 200. The angle of the inclined angle 231 can provide a certain allowance for the installation and disassembly of the flip cover 100, which can not only facilitate the disassembly and assembly of the flip cover 100, but also prevent the parts from being scratched. Of course, the present invention does not limit the angle of the inclined angle 231. Preferably, the reinforcing rib 230 is made of an elastic material. Further, an installation guiding groove 240 is also provided on the inner wall of the middle frame 200. The first positioning hole 210 is located in the installation guiding groove 240. When the flip cover 100 is connected to the middle frame 200, the first positioning shaft 120 goes down along the installation guiding groove 240 until the first positioning groove 110 clamps the first positioning hole 210 to complete the connection between the flip cover 100 and the printer middle frame 200.

[0025] It should be noted that in the description of the present utility model, if there is any reference to the orientation description, such as the orientation or positional relationship indicated by up, down, front, back, left, right, etc., it is all based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed or operated in a specific orientation, and should not be construed as a limitation to the present utility model.

[0026] In the description of the present utility model, the meaning of "several" is one, and the meaning of "multiple" is two or more. Understandings such as "greater than", "less than", "exceeding", etc. do not include the present number, and understandings such as "above", "below", "within", etc. include the present number. If there is a description of the first new thermal printer or the second, etc., it is only for the purpose of distinguishing technical features, and should not be construed as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features or implicitly indicating the sequence relationship of the indicated technical features.

[0027] In the description of the present utility model, unless otherwise clearly defined, words such as "set", "installed", "connected", etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above words in the present utility model in combination with the specific content of the technical solution.

[0028] The above embodiments are only the preferred embodiments of the present utility model, and cannot be used to limit the scope of protection of the present utility model. Any non-substantial changes and substitutions made by those skilled in the art on the basis of the present utility model belong to the scope of protection required by the present utility model.

Claims

1. A new type of thermal printer, characterized in that, Comprising: A flip cover (100), on the outer side of the flip cover (100) there are a first positioning groove (110) and a first positioning shaft (120), and the first positioning groove (110) is located above the first positioning shaft (120); A middle frame (200), inside the middle frame (200) there are a first positioning hole (210) and a second positioning groove (220), and the first positioning hole (210) is used to fix the first positioning shaft (120); A torsion spring (300), the torsion spring (300) has a first torsion arm (310) and a second torsion arm (320), the first torsion arm (310) can abut against the first positioning groove (110), and the second torsion arm (320) can abut against the second positioning groove (220).

2. The thermal printer according to claim 1, characterized in that, On both the left and right sides inside the flip cover (100) there are support plates (130), and at the front part of the support plates (130) there is a third positioning groove (131), and the third positioning groove (131) is used to position the flip cover (100) and the middle frame (200).

3. The thermal printer according to claim 1, wherein, One end of the first torsion arm (310) is provided with a hook portion (311), the shape of the hook portion (311) is square, and the hook portion (311) can abut against the first positioning groove (110).

4. The thermal printer according to claim 2, characterized in that Between the inner wall of the middle frame (200) and the second positioning groove (220) there is a positioning post (140) for the third positioning groove (131) to be embedded in. When the flip cover (100) rotates downward and closes on the middle frame (200) by using the first positioning shaft (120) through the support plate (130), the positioning post (140) is embedded in the third positioning groove (131).

5. The thermal printer according to claim 2, characterized in that, The third positioning groove (131) is a square groove.

6. The thermal printer according to claim 1, wherein The second positioning groove (220) includes a first baffle (221) and a second baffle (222), and the first baffle (221) and the second baffle (222) are arranged in parallel.

7. The thermal printer according to claim 6, wherein, The end of the second torsion arm (320) can be clamped between the first baffle (221) and the second baffle (222).

8. The thermal printer according to claim 1, wherein, On the inner wall surface of the middle frame (200) there are reinforcing ribs (230), and on one side of the reinforcing ribs (230) there is an inclined angle (231), and the inclined angle (231) facilitates the flip cover (100) to be clamped to the middle frame (200).

9. The thermal printer according to claim 1, wherein On the inner wall of the middle frame (200) there is also an installation guiding groove (240), and the first positioning hole (210) is located in the installation guiding groove (240).

10. The thermal printer according to claim 8, characterized in that, The reinforcing ribs (230) are made of an elastic material.

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