CN216993602U

CN216993602U - Thermal printer with cover closing buffer mechanism

Info

Publication number: CN216993602U
Application number: CN202123454256.4U
Authority: CN
Inventors: 不公告发明人
Original assignee: Zhuhai Hengsheng Barcode Equipment Co Ltd
Current assignee: Zhuhai Hengsheng Barcode Equipment Co Ltd
Priority date: 2021-12-31
Filing date: 2021-12-31
Publication date: 2022-07-19
Anticipated expiration: 2031-12-31

Abstract

The utility model relates to the technical field of bill printers, in particular to a thermal printer with a cover closing buffer mechanism.

Description

Thermal printer with cover closing buffer mechanism

Technical Field

Background

The thermal bill printer is provided with a lower cover and an upper cover, wherein the upper cover is usually hinged with the lower cover, the upper cover needs to be opened when a paper shaft needs to be replaced, the upper cover is closed after the paper shaft is replaced, and the upper cover rotates relative to the lower cover and generates strong impact force when the upper cover is closed, so that a printing head is easily damaged, and even the hands of a user can be crushed; the existing scheme is that protruding sponge or soft plastic is placed at one end, close to an upper cover and a lower cover, of the upper cover, but the sponge and other soft plastic are frequently forced to deform, the self elastic restoring force performance of the material is seriously attenuated, and the long-term use buffer performance of the material cannot be guaranteed.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects of the prior art, the utility model aims to provide a thermal printer with a cover closing buffer mechanism, which can effectively buffer the impact force of an upper cover relative to a lower cover during cover closing and has no damping performance after long-term use.

In order to solve the problems, the technical scheme adopted by the utility model is as follows: a thermal printer having a cover closing buffer mechanism, comprising:

the lower cover is provided with a buffer groove;

the upper cover is hinged with the lower cover;

the buffer part is arranged in the buffer groove, the buffer part is hinged to the lower cover, a pressure spring is arranged between the buffer groove and the buffer part, the buffer part protrudes from the upper end face of the lower cover, and the upper cover rotates relative to the lower cover and is in compression joint with the buffer part.

Furthermore, the lower cover is provided with a hinged shaft used for being connected with the buffering part, the buffering groove is provided with a locking part, and the buffering part is provided with a locking bulge matched with the locking part.

Furthermore, one side of dashpot opens the setting, the protruding setting of locking is in be close to on the buffer part the open one side of dashpot.

Further, a buffer pad is arranged on the upper end face of the buffer part and/or the position of the upper cover, which is in contact with the buffer part.

Further, the number of the buffer parts is 2, and the two buffer parts are arranged on the left side and the right side of the upper end face.

Compared with the prior art, the utility model has the beneficial effects that: the lower cover of the thermal printer is provided with the buffer groove, the buffer groove is hinged with the buffer part, the pressure spring is arranged between the buffer part and the buffer groove, the buffer part protrudes from the upper end surface of the lower cover under the condition of not being subjected to external force, the upper cover rotates relative to the lower cover and is in pressure connection with the buffer part when the cover is closed, the impact force between the upper cover and the lower cover is reduced through the buffer part, the printing head or the machine core is prevented from being damaged, even the hand of a user is prevented from being crushed, the service life of the pressure spring is long, and the obvious performance attenuation can not be caused after long-term use.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a schematic view of a thermal printer according to an embodiment of the present invention with an upper cover opened;

FIG. 2 is a schematic cross-sectional view of a thermal printer according to an embodiment of the present invention with the upper cover open;

FIG. 3 is an enlarged schematic view at A in FIG. 2;

FIG. 4 is a schematic cross-sectional view of a thermal printer according to an embodiment of the present invention with the top cover closed;

fig. 5 is an enlarged schematic view at B in fig. 4.

The reference numbers illustrate: a lower cover 100; a buffer 101; a buffer tank 102; a hinge shaft 103; a pressure spring 104; a lock portion 105; a locking projection 106; an upper cover 200; .

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and do not limit the utility model.

Referring to fig. 1 to 5, a thermal printer with a cover closing buffer mechanism includes an upper cover 200 and a lower cover 100, the upper cover 200 is hinged to the lower cover 100, the lower cover 100 is provided with a buffer slot 102, the buffer slot 102 is recessed inward from an upper end surface of the lower cover 100, a buffer portion 101 is provided in the buffer slot 102, one end of the buffer portion 101 is hinged to the lower cover 100 or a groove wall of the buffer slot 102, and the other end is connected to the buffer slot 102 through a compression spring 104, the compression spring 104 is always pressed and deformed, that is, the buffer portion 101 protrudes from an upper end of the buffer slot 102 in a state that the upper cover 200 is opened, when the cover is closed, the upper cover 200 rotates relative to the lower cover 100 and is firstly pressed against the buffer portion 101, so as to buffer an impact between the upper cover 200 and the lower cover 100 and avoid damaging a print head or a movement, and the buffer portion 101 automatically pops out from the buffer slot 102 under an elastic restoring force of the compression spring 104 after the cover is opened.

In some embodiments, the lower cover 100 is provided with a hinge shaft 103 for connecting the buffer part 101, the buffer groove 102 is provided with a locking part 105, the buffer part 101 is provided with a locking protrusion 106 matched with the locking part 105, the buffer part 101 is hinged on the lower cover 100 through the hinge shaft 103, and the rotation amplitude of the buffer part 101 relative to the lower cover 100 is limited to the area between the lower end surface of the buffer part 102 and the locking protrusion 106 abutting against the locking part 105, so that the buffer part 101 is prevented from being separated from the lower cover 100 and affecting the structural stability of the thermal printer.

In some embodiments, one side of the buffer slot 102 is opened, the locking protrusion 106 is disposed on the buffer portion 101 near the opened side of the buffer slot 102, because the buffer portion 101 is hinged to the lower cover 100, that is, the buffer portion 101 rotates along the hinge shaft 103 between the buffer portion 101 and the lower cover 100, the locking protrusion 106 performs a circular arc motion in space, the one side of the buffer slot 102 is opened to avoid the problem that the locking protrusion 106 interferes with the lower cover 100 during the motion, and the locking portion 105 is also disposed at the upper end of the opened side to limit the locking protrusion 106 from being separated from the buffer slot 102 along with the rotation of the buffer portion 101.

In some embodiments, the buffer part 101 is made of plastic, so as to avoid the damage to the upper cover 200 or the buffer part 101 due to a large impact between the upper cover 200 and the buffer part 101 when the cover is closed.

In some embodiments, a buffer pad is disposed on the upper end surface of the buffer part 101 and/or the position where the upper cover 200 contacts the buffer part 101, and the buffer pad may be made of soft plastic and is adhered to the buffer part 101 or the upper cover 200, so as to further prevent the upper cover 200 from directly impacting the buffer part 101 when the cover is closed, and of course, the buffer part 101 itself can rotate relative to the lower cover 100, so that the buffer pad can be made thin appropriately, and the cost can be reduced.

In some embodiments, the number of the buffer portions 101 is 2, two buffer portions 101 are provided at both left and right sides of the upper end surface of the lower cover 100, and the two buffer portions 101 are provided in left-right symmetry.

The above embodiments are only preferred embodiments of the present invention, and the protection scope of the present invention is not limited thereby, and any insubstantial changes and substitutions made by those skilled in the art based on the present invention are within the protection scope of the present invention.

Claims

1. A thermal printer having a cover closing buffer mechanism, comprising:

a lower cover (100), wherein the lower cover (100) is provided with a buffer groove (102);

an upper cover (200), the upper cover (200) being hinged with the lower cover (100);

the buffer part (101) is arranged in the buffer groove (102), the buffer part (101) is hinged with the lower cover (100), a pressure spring (104) is arranged between the buffer groove (102) and the buffer part (101), the buffer part (101) protrudes from the upper end face of the lower cover (100), and the upper cover (200) rotates relative to the lower cover (100) and is in pressure joint with the buffer part (101).

2. The thermal printer with the cover closing buffer mechanism according to claim 1, wherein the lower cover (100) is provided with a hinge shaft (103) for connecting the buffer part (101), the buffer groove (102) is provided with a locking part (105), and the buffer part (101) is provided with a locking projection (106) matched with the locking part (105).

3. The thermal printer having a cover closing buffer mechanism according to claim 2, wherein one side of the buffer groove (102) is provided to be open, and the locking protrusion (106) is provided on the buffer portion (101) near the open side of the buffer groove (102).

4. The thermal printer having a cover closing buffer mechanism according to claim 1, wherein a buffer pad is provided on an upper end surface of the buffer portion (101) and/or a position where the upper cover (200) contacts the buffer portion (101).

5. The thermal printer having a cover closing buffer mechanism according to claim 1, wherein the number of the buffer portions (101) is 2, and two buffer portions (101) are provided on the left and right sides of the upper end surface.