CN212949736U - Key type cover opening structure of thermal printer - Google Patents

Abstract

The utility model relates to a key-type structure of uncapping of thermal printer, it can include the button, the universal driving shaft, control the trip and control the spring, control the trip and fix respectively on both ends about the universal driving shaft, and rotationally install on thermal printer's well middle and upper shells, the button is installed on thermal printer's upper shell, be used for driving the trip action, in order to realize with thermal printer's well middle and lower shells lock or break away from, thereby realize uncapping or closing the lid, the spring mounting is on one side opposite with the button, its one end butt trip, other end butt is in well middle and upper shells. The utility model discloses a traditional mode of uncapping is broken with the rotatory mode of uncapping to the epitheca button, when needs uncap, only need press the button can, but one-hand operation, it is very convenient.

Description

Key type cover opening structure of thermal printer

Technical Field

The utility model relates to a thermal printer field specifically relates to a button structure of uncapping of thermal printer.

Background

Thermal printers are popular with users because they are small and do not require replacement of toner. Thermal printers have been widely used in the fields of POS terminal systems, banking systems, medical instruments, and the like. At present, most of portable thermal printers on the market are used for discharging paper and front paper, and the front paper discharging of the portable printers almost adopts a sliding type cover opening. The cover opening mode needs certain skill, generally needs two hands to operate simultaneously, and is inconvenient.

Disclosure of Invention

The utility model aims at providing a thermal printer's button structure of uncapping to solve above-mentioned problem. Therefore, the utility model discloses a specific technical scheme as follows:

the utility model provides a key-type structure of uncapping of thermal printer, thermal printer includes epitheca, well inferior valve and inferior valve, well epitheca with the one end of well inferior valve rotationally links together, and the other end can the lock be in the same place, wherein, key-type structure of uncapping includes button, universal driving shaft about trip and controls the spring, control the trip to fix respectively on the both ends about the universal driving shaft, and rotationally install on the well epitheca, the button is installed on the epitheca, be used for the drive trip action, in order to realize will well epitheca with well inferior valve lock or break away from to realize uncapping or closing the lid, the spring mounting with on the one side that the button is opposite, its one end butt trip, other end butt in well epitheca.

Furthermore, the trip includes the rotation portion and is located fixed part and the block portion of both sides about the rotation portion, the fixed part be fixed in the universal driving shaft and its front and back side respectively with the button with the spring butt, the rotation portion rotationally installs on the middle and upper shell, the block portion is used for being in the same place middle and upper shell lock of thermal printer.

Further, the clamping part comprises an upper buckle and a lower buckle, the upper buckle is matched with the clamping groove of the middle and upper shell, and the lower buckle is matched with the clamping groove of the middle and lower shell.

Further, a first protrusion and a second protrusion for mounting the spring are respectively provided on the fixing portion and the upper case.

Furthermore, the clamping hook is integrally formed in an injection molding mode.

The utility model adopts the above technical scheme, the beneficial effect who has is: adopt the epitheca button and the rotatory mode of uncapping, break the tradition mode of uncapping, when needs uncap, only need press the button can, but one-hand operation, it is very convenient.

Drawings

To further illustrate the embodiments, the present invention provides the accompanying drawings. The accompanying drawings, which are incorporated in and constitute a part of this disclosure, illustrate embodiments of the invention and, together with the description, serve to explain the principles of the embodiments. With these references, one of ordinary skill in the art will appreciate other possible embodiments and advantages of the present invention. Elements in the figures are not drawn to scale and like reference numerals are generally used to indicate like elements.

Fig. 1 is a perspective view of a key type cover opening structure according to an embodiment of the present invention, in which a key is not shown;

fig. 2 is a perspective view of a thermal printer having the key type door opening structure shown in fig. 1, in which an upper case and a lower case are not shown;

fig. 3 is a partial sectional view of the thermal printer shown in fig. 2, showing a specific mounting structure of a push-button type door opening structure.

Detailed Description

The present invention will now be further described with reference to the accompanying drawings and detailed description.

Referring to fig. 1 to 3, a push-button type cover opening structure of a thermal printer is described, in which the thermal printer includes an upper case (not shown), an upper middle case 10, a lower middle case 20, and a lower case (not shown), one end (rear end) of the upper middle case 10 and the lower middle case 20 are rotatably coupled together, and the other end (front end) can be snapped together. The push-button type door opening structure 1 includes a push button (not shown), a linkage shaft 11, left and right hooks 12, and left and right springs 13, the left and right hooks 12 being fixed to left and right ends of the linkage shaft 11, respectively, and rotatably installed on an upper middle case 10 (specifically, an installation groove 101 at a front end of the upper middle case 10). The button is mounted on the upper case (specifically, on the front side surface) and is used for driving the hook 12 to act so as to fasten or unfasten the middle upper case 10 and the middle lower case 20, thereby opening or closing the cover of the thermal printer. The spring 13 is mounted on the side opposite to the key, i.e. the key is mounted on the front side of the linkage shaft 11 and the spring 13 is mounted on the rear side of the linkage shaft 11. One end of the spring 13 is connected with the hook 12, and the other end is connected with the upper shell. Therefore, when the key is pressed, the spring 13 is compressed, and the hook 12 is rotated to be separated from the middle-lower case 20, and the cover can be opened, and when the key is released, the hook 12 is restored under the action of the spring 13. The utility model discloses a traditional mode of uncapping is broken with the rotatory mode of uncapping to the epitheca button, when needs uncap, only need press the button can, but one-hand operation, it is very convenient.

In the illustrated embodiment, the hook 12 includes a rotating portion 121, and a fixing portion 122 and an engaging portion 123 located at upper and lower sides of the rotating portion (rotating shaft) 121. The fixing portion 122 is fixed to the linkage shaft 11, and specifically, two ends of the linkage shaft 11 are fixedly inserted into the fixing portions 122 of the left and right hooks 12. The front and rear sides of the fixing portion 122 are respectively abutted against the push button and the spring 13. The rotating part 121 is rotatably installed on the upper middle case 10. The engaging portion 123 is used to engage the upper and lower cases of the thermal printer. Specifically, the engaging portion 123 includes an upper buckle 1231 and a lower buckle 1232, wherein the upper buckle 1231 is engaged with the engaging groove 102 of the middle and upper shell 10, and the lower buckle 1232 is engaged with the engaging groove 201 of the middle and lower shell 20. Therefore, when the button is pressed, the left and right hooks 12 can rotate around the rotation portion 121 thereof simultaneously through the linkage shaft 11, so that the upper buckle 1231 and the lower buckle 1232 are respectively released from the slots 102 and 201, and at this time, the upper middle shell 10 can be rotated and opened relative to the lower middle shell 20.

In order to facilitate the mounting of the spring 13, the fixing portion 122 and the upper case 10 are provided with a first protrusion 124 and a second protrusion 103, respectively, for mounting the spring 13.

Preferably, the hook 12 is integrally injection molded, for example made of a rigid plastic.

While the invention has been particularly shown and described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims (5)

1. The utility model provides a key-type structure of uncapping of thermal printer, thermal printer includes epitheca, well inferior valve and inferior valve, well epitheca with the one end of well inferior valve rotationally links together, and the other end can the lock be in the same place, its characterized in that, key-type structure of uncapping includes button, universal driving shaft about, trip and control the spring, it fixes respectively to control the trip on both ends about the universal driving shaft, and rotationally install on the epitheca, the button is installed on the epitheca, be used for the drive trip action, in order to realize with well epitheca with well inferior valve lock or break away from to realize uncapping or closing the lid, the spring mounting with on the one side that the button is opposite, its one end butt trip, other end butt in well epitheca.

2. The structure for opening a cover by key according to claim 1, wherein the hook includes a rotating portion, and a fixing portion and a engaging portion which are provided at upper and lower sides of the rotating portion, the fixing portion being fixed to the linkage shaft and having front and rear sides abutting against the key and the spring, respectively, the rotating portion being rotatably installed on the upper middle case, the engaging portion being for engaging the upper middle case and the lower middle case of the thermal printer together.

3. The push-button door opening structure according to claim 2, wherein said engaging portion includes an upper catch and a lower catch, said upper catch engaging with a catch groove of said upper middle case, said lower catch engaging with a catch groove of said lower middle case.

4. A push-button door opening structure according to claim 2, wherein said fixing portion and said upper case are provided with a first projection and a second projection for mounting said spring, respectively.

5. The push-button lid release structure according to any one of claims 2 to 4, wherein the hook is integrally injection-molded.

Images