Anti-falling rubber roller structure and printer

Abstract

The utility model provides an anti-falling rubber roller structure which comprises a first fixing frame, a second fixing frame and a rubber roller assembly, wherein the first fixing frame and the second fixing frame are symmetrically arranged side by side, and the two ends of the rubber roller assembly are rotationally connected with the first fixing frame and the second fixing frame respectively. The first fixing frame and the second fixing frame are each provided with a first installation hole used for being connected with the rubber roller assembly, and the first installation holes are in a long strip shape so that the rubber roller assembly can move in the first installation holes. The utility model further provides a printer which comprises the rubber roller structure and a front cover, and the first fixing frame and the second fixing frame are symmetrically arranged on the front cover side by side. According to the anti-falling rubber roller structure, the first mounting holes are formed in the first fixing frame and the second fixing frame and used for mounting the rubber roller assembly, and the first mounting holes are not of a slotting structure, so that even if the structure of the first fixing frame and the second fixing frame falls off, the rubber roller assembly is not prone to deformation, and the rubber roller assembly cannot fall off.

Description

Technical Field

[0001] The utility model relates to the technical field of printers, in particular to an anti-falling rubber roller structure and a printer. Background Art

[0002] At present, thermal printers are widely used in POS machines, vending machines or cash registers. Thermal printers usually consist of a shell, a paper cover (or front cover), a rubber roller assembly and a print head. Please refer to Figure 7 The rubber roller assembly of most existing thermal printers is installed on the paper bin cover through a sheet metal part, and a slot for installing the rubber roller assembly is provided on the sheet metal part. The slot for assembling the rubber roller assembly has an opening to facilitate the installation of the rubber roller assembly. However, when the thermal printer falls, this structure is easily deformed and the rubber roller assembly falls out. In particular, when the paper bin cover is in an open state, the deformation is more obvious and the rubber roller assembly is more likely to fall off.

[0003] In view of this, the inventor specially designed an anti-falling rubber roller structure and a printer, and this case was thus created. Utility Model Content

[0004] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, one purpose of the utility model is to propose an anti-falling rubber roller structure, which overcomes the disadvantages of currently using sheet metal parts by providing a first mounting hole on a first fixing frame and a second fixing frame for mounting a rubber roller assembly.

[0005] Another objective of the utility model is to provide a printer.

[0006] According to the utility model, an anti-falling rubber roller structure is provided, including two first fixing frames and second fixing frames arranged side by side and symmetrically, and a rubber roller assembly whose two ends are rotatably connected to the first fixing frame and the second fixing frame respectively, and the first fixing frame and the second fixing frame are both provided with a first mounting hole for connecting the rubber roller assembly, and the first mounting hole is in the shape of an elongated strip so that the rubber roller assembly can be moved in the first mounting hole.

[0007] The utility model discloses an anti-falling rubber roller structure, in which a first mounting hole is arranged on a first fixing frame and a second fixing frame for mounting a rubber roller assembly. Since the first mounting hole does not adopt a slotted structure, even if the first fixing frame and the second fixing frame fall, the structures are not easily deformed, and the rubber roller assembly cannot fall.

[0008] In some embodiments of the present invention, the rubber roller assembly includes a rubber roller shaft, a rubber layer sleeved on the outer side wall of the rubber roller shaft, and a first sleeve and a second sleeve sleeved on the rubber roller shaft and located on both sides of the rubber layer.

[0009] In some embodiments of the present invention, the rubber roller assembly further includes a driving gear sleeved on the rubber roller shaft and used for driving the rubber roller assembly to rotate.

[0010] In some embodiments of the present invention, the driving gear, the first bushing, the rubber layer, and the second bushing are sequentially arranged on the outer side wall of the rubber roller shaft along the central axis direction of the rubber roller shaft.

[0011] In some embodiments of the present invention, the first fixing frame and the second fixing frame have the same structure, both comprising a base for fixing and a support base arranged on the base, and the first mounting hole is arranged on the support base.

[0012] In some embodiments of the utility model, the support seat is arranged on the upper end surface of the base and on one side close to the short side, and the support seat is located on one side of the base and is provided with reinforcing ribs connected to the base.

[0013] In some embodiments of the present invention, the first fixing frame and the second fixing member are both made of plastic or metal.

[0014] According to a printer provided by the utility model, it comprises an anti-falling rubber roller structure and a front cover, wherein the first fixing frame and the second fixing frame are arranged side by side and symmetrically on the front cover.

[0015] In some embodiments of the present invention, the first fixing frame and the second fixing frame are both provided with a first through hole, and the first fixing frame and the second fixing frame are both fastened to the front cover by two bolts.

[0016] In some embodiments of the present invention, positioning holes are provided on both the first fixing frame and the second fixing frame, and positioning posts cooperating with the positioning holes are provided on the front cover. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention.

[0018] in:

[0019] Figure 1 This is a schematic diagram of the axial side of the rubber roller structure of the utility model. Figure 1 ;

[0020] Figure 2 It is a structural schematic diagram of the first fixing frame or the second fixing frame of the utility model;

[0021] Figure 3 This is a schematic diagram of the axial side of the rubber roller structure of the utility model. Figure 2 ;

[0022] Figure 4 This utility model Figure 3 A partial enlarged view of

[0023] Figure 5 This utility model Figure 3 A partial enlarged view of B;

[0024] Figure 6 It is a cross-sectional view of the rubber roller structure of the utility model;

[0025] Figure 7 It is a structural schematic diagram of a sheet metal part in the prior art.

[0026] Description of labels:

[0027] 10. First fixing frame; 101. First mounting hole; 11. Base; 111. First through hole; 112. Positioning hole; 12. Support seat; 13. Reinforcing ribs; 20. Second fixing frame; 30. Rubber roller assembly; 31. Rubber roller shaft; 32. Rubber layer; 33. First bushing; 34. Second bushing; 35. Driving gear; 40. Front cover; 41. Positioning column; 50. Bolt. DETAILED DESCRIPTION

[0028] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention clearer and more understandable, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0029] Example 1

[0030] See also Figures 1 to 6 , is an anti-falling rubber roller structure as Example 1 of the utility model, comprising two first fixing frames 10 and second fixing frames 20 arranged side by side and symmetrically, and a rubber roller assembly 30 rotatably connected to the first fixing frames 10 and the second fixing frames 20 at both ends, and the first fixing frames 10 and the second fixing frames 20 are both provided with first mounting holes 101 for connecting the rubber roller assembly 30, and the first mounting holes 101 are in the shape of long strips so that the rubber roller assembly 30 is located in the first mounting holes 101 and moves. Specifically, when in the printing state, under the action of the printing assembly, the rubber roller assembly 30 is away from the printing assembly in the first mounting holes 101; an anti-falling rubber roller structure of the utility model is provided with the first mounting holes 101 on the first fixing frames 10 and the second fixing frames 20 for mounting the rubber roller assembly 30. Since the first mounting holes 101 do not adopt a slotted structure, even if the first fixing frames 10 and the second fixing frames 20 fall, the structures are not easily deformed, and the rubber roller assembly 30 cannot fall.

[0031] The rubber roller assembly 30 includes a rubber roller shaft 31, a rubber layer 32 (or anti-sticking layer) sleeved on the outer side wall of the rubber roller shaft 31, a first sleeve 33 and a second sleeve 34 sleeved on the rubber roller shaft 31 and located on both sides of the rubber layer 32. The rubber roller assembly 30 also includes a driving gear 35 sleeved on the rubber roller shaft 31 and used to drive the rubber roller assembly 30 to rotate. The driving gear 35, the first sleeve 33, the rubber layer 32, and the second sleeve 34 are sequentially arranged on the outer side wall of the rubber roller shaft 31 along the central axis direction of the rubber roller shaft 31. How the rubber layer 32, the first sleeve 33, the second sleeve 34 and the driving gear 35 are specifically arranged on the rotating shaft are conventional technical means in the field and will not be described in detail.

[0032] The first fixing frame 10 and the second fixing frame 20 have the same structure, both of which include a base 11 for fixing and a support seat 12 arranged on the base 11, the first mounting hole 101 is arranged on the support seat 12, the support seat 12 is arranged on the upper end surface of the base 11 and on one side close to the short side, the support seat 12 is located on one side of the base 11 and is provided with a reinforcing rib 13 connected to the base 11, that is, the support seat 12 is arranged at an angle of 90 degrees to one side of the short side of the base 11, and at least one reinforcing rib 13 is used to make the strength of the first fixing member or the second fixing frame 20 higher. The first fixing frame 10 and the second fixing member are both made of plastic parts or metal parts, wherein the injection molded parts are made of plastic material and are integrally formed, and the metal parts are cast parts, preferably metal parts can be used.

[0033] Example 2

[0034] See also Figures 1 to 6 , is a printer as the second embodiment of the utility model, including an anti-falling rubber roller structure, and also including a front cover 40, a first fixing frame 10 and a second fixing frame 20 are arranged side by side and symmetrically on the front cover 40, and a specific base 11 is fixedly arranged on the front cover 40, a first through hole 111 is arranged on the first fixing frame 10 and the second fixing frame 20, and the first fixing frame 10 and the second fixing frame 20 are locked on the front cover 40 by two bolts 50, a positioning hole 112 is arranged on the first fixing frame 10 and the second fixing frame 20, and a positioning column 41 matched with the positioning hole 112 is arranged on the front cover 40. When installing, first install the first fixing frame 10 and the second fixing member on both ends of the rubber roller assembly 30, and then match with the positioning column 41 through the positioning hole 112, and finally use the bolt 50 to pass through the first through hole 111 and lock it on the front cover 40, and the front cover 40 is provided with an internal threaded hole matched with the bolt 50.

[0035] To sum up, the utility model provides an anti-falling rubber roller structure by setting a first mounting hole on the first fixing frame and the second fixing frame for installing the rubber roller assembly. Since the first mounting hole does not adopt a slotted structure, even if the structure of the first fixing frame and the second fixing frame falls, it is not easy to be deformed, and the rubber roller assembly cannot fall. That is, when the printer falls on a bare machine, the rubber roller structure is structurally stable and is not easy to be damaged or fall out. It can resist falling better and enhance the durability of the printer. At the same time, positioning columns and positioning holes are provided to cooperate with each other so as to quickly install the rubber roller assembly on the front cover.

[0036] The utility model is described above by way of example in conjunction with the accompanying drawings. It is obvious that the specific implementation of the utility model is not limited to the above-mentioned method. As long as various non-substantial improvements are made using the method concept and technical solution of the utility model, or the concept and technical solution of the utility model are directly applied to other occasions without improvement, they are all within the protection scope of the utility model.

Claims

1. An anti-falling rubber roller structure, characterized in that: The invention comprises a first fixing frame (10) and a second fixing frame (20) which are arranged side by side and symmetrically, and a rubber roller assembly (30) whose two ends are rotatably connected to the first fixing frame (10) and the second fixing frame (20), respectively; the first fixing frame (10) and the second fixing frame (20) are both provided with a first mounting hole (101) for connecting the rubber roller assembly (30); the first mounting hole (101) is in the shape of an elongated strip so that the rubber roller assembly (30) can be moved in the first mounting hole (101).

2. The anti-falling rubber roller structure according to claim 1, characterized in that: The rubber roller assembly (30) comprises a rubber roller shaft (31), a rubber layer (32) sleeved on the outer wall of the rubber roller shaft (31), and a first shaft sleeve (33) and a second shaft sleeve (34) sleeved on the rubber roller shaft (31) and located on both sides of the rubber layer (32).

3. The anti-falling rubber roller structure according to claim 2, characterized in that: The rubber roller assembly (30) further comprises a driving gear (35) which is sleeved on the rubber roller shaft (31) and is used to drive the rubber roller assembly (30) to rotate.

4. The anti-falling rubber roller structure according to claim 3, characterized in that: The driving gear (35), the first shaft sleeve (33), the rubber layer (32), and the second shaft sleeve (34) are sequentially arranged on the outer side wall of the rubber roller shaft (31) along the central axis direction of the rubber roller shaft (31).

5. The anti-falling rubber roller structure according to claim 1, characterized in that: The first fixing frame (10) and the second fixing frame (20) have the same structure, and both comprise a base (11) for fixing and a support seat (12) arranged on the base (11), and the first mounting hole (101) is arranged on the support seat (12).

6. The anti-falling rubber roller structure according to claim 5, characterized in that: The support seat (12) is arranged on the upper end surface of the base (11) and close to the short side. The support seat (12) is located on one side of the base (11) and is provided with a reinforcing rib (13) connected to the base (11).

7. The anti-falling rubber roller structure according to claim 1, characterized in that: The first fixing frame (10) and the second fixing member are both made of plastic or metal.

8. A printer, comprising the anti-falling rubber roller structure according to any one of claims 1 to 7, characterized in that: It also comprises a front cover (40), wherein the first fixing frame (10) and the second fixing frame (20) are arranged side by side and symmetrically on the front cover (40).

9. A printer according to claim 8, characterized in that: The first fixing frame (10) and the second fixing frame (20) are both provided with a first through hole (111), and the first fixing frame (10) and the second fixing frame (20) are both fastened to the front cover (40) by two bolts (50).

10. A printer according to claim 8, characterized in that: The first fixing frame (10) and the second fixing frame (20) are both provided with positioning holes (112), and the front cover (40) is provided with positioning columns (41) that match the positioning holes (112).

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