A fixing mechanism of rubber roller for thermal printer core

Abstract

The utility model belongs to the technical field of thermal printer, disclose a kind of rubber roller fixing mechanism of thermal printer core, including rack, heating sheet subassembly, rubber roller subassembly, shaft and transmission subassembly, the rack is used to fix heating sheet subassembly, rubber roller subassembly, transmission subassembly and shaft;The shaft passes through the hole between heating sheet group, so that heating sheet subassembly is fixed on rack by shaft and rotates around shaft, and the back side of heating sheet subassembly is equipped with several springs;One end of the rubber roller subassembly is equipped with transmission mechanism, and transmission subassembly is drivingly connected with transmission mechanism arranged on the rack;The left and right ends of the rack are both provided with clamping structure, and the rubber roller subassembly can be clamped into the clamping structure.The utility model removes the traditional metal locking frame, reduces cost, and also enables the rubber roller subassembly to be clamped on the rack through clamping structure, to ensure normal operation.

Description

Technical Field

[0001] This utility model relates to the field of thermal printer technology, and specifically to a rubber roller fixing mechanism for a thermal printer mechanism. Background Technology

[0002] Existing thermal printer modules include a frame, a heating element assembly, a rubber roller assembly, and a transmission assembly. The heating element assembly and the rubber roller assembly are mounted on the frame, and the transmission assembly drives the rubber roller assembly to rotate. The inherent friction of the rubber roller drives the paper through rotation, thus achieving the printing effect.

[0003] In existing thermal printers, the heating element assembly is fixed to the frame, and the roller assembly is mounted on the frame. Currently, the roller assembly in thermal printers is fixed to the frame using a metal roller locking bracket that hooks onto the roller bushing for stability and printing. However, this metal roller locking bracket increases the cost of the thermal printer. To save costs, this invention provides a roller fixing mechanism that eliminates the need for the metal roller locking bracket. Utility Model Content

[0004] Therefore, this utility model provides a rubber roller fixing mechanism for a thermal printer mechanism to solve the problems in the prior art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A roller fixing mechanism for a thermal printer motor includes a frame, a heating element assembly, a roller assembly, a shaft, and a transmission assembly. The frame is used to fix the heating element assembly, roller assembly, transmission assembly, and shaft. The shaft passes through holes between the heating element assemblies, so that the heating element assemblies are fixed to the frame by the shaft and rotate around the shaft. Several springs are provided on the rear side of the heating element assembly. A transmission mechanism is provided at one end of the roller assembly, and the transmission assembly on the frame is connected to the transmission mechanism. Both ends of the frame are provided with locking structures, into which the roller assembly can be locked.

[0007] Furthermore: the middle part of the rubber roller assembly is a rubber roller, and the two ends of the rubber roller assembly are provided with bushings. One end of the rubber roller is connected to the transmission mechanism, and the rubber roller can rotate within the bushing.

[0008] Furthermore: the transmission assembly includes a motor and a gear set, the motor is connected to the gear set, the gear set is connected to the transmission mechanism, and the gear set is mounted on the frame.

[0009] Furthermore, the heating element assembly and the rubber roller assembly on the frame are arranged side by side, and the heating element assembly can contact the rubber roller assembly.

[0010] Furthermore: the locking structure includes a locking inlet section and a locking outlet section, which are continuously connected. The locking inlet section has a structure that is wider at the top and narrower at the bottom.

[0011] Furthermore: the clamping section has an arc structure, and the width of the opening of the clamping section is smaller than the diameter of the bushing.

[0012] Furthermore, the heating element assembly is tilted forward toward the rubber roller side.

[0013] This invention has the following advantages: it eliminates the traditional metal locking frame, reducing costs, and also uses a locking structure to ensure that the rubber roller assembly can be locked onto the frame, guaranteeing its normal operation.

[0014] Other features and advantages of this invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. Attached Figure Description

[0015] To more intuitively illustrate the prior art and this application, exemplary drawings are provided below. It should be understood that the specific shapes and structures shown in the drawings should not generally be regarded as limiting conditions for implementing this application; for example, based on the technical concept disclosed in this application and the exemplary drawings, those skilled in the art are able to easily make conventional adjustments or further optimizations to the addition / reduction / classification, specific shapes, positional relationships, connection methods, size ratios, etc. of certain units (components).

[0016] Figure 1 A perspective view of a rubber roller fixing mechanism for a thermal printer mechanism provided in this application.

[0017] Figure 2 This is a perspective view of the rubber roller assembly in the rubber roller fixing mechanism of this utility model.

[0018] Figure 3 This is a perspective view of the rubber roller fixing mechanism of this utility model after removing the rubber roller assembly and the motor.

[0019] Figure 4 This is a structural schematic diagram of the rubber roller fixing mechanism of this utility model from another perspective.

[0020] Figure 5 for Figure 1 The left view.

[0021] Figure 6 for Figure 5 A schematic diagram of the cross-sectional structure.

[0022] In the diagram: 1. Frame; 2. Heating element assembly; 3. Rubber roller assembly; 31. Bushing; 32. Rubber roller; 33. Transmission gear; 4. Shaft; 5. Transmission mechanism; 51. Motor; 52. Gear set; 6. Entrance section; 7. Clamping section; 8. Spring. Detailed Implementation

[0023] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. It should be understood that these embodiments are merely for further explanation of this utility model and should not be construed as limiting the scope of protection of this utility model. Technical engineers in the field can make some non-essential improvements and adjustments to this utility model based on the above-described content. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0024] Please see Figures 1-4 A rubber roller fixing mechanism for a thermal printer mechanism includes a frame 1, a heating element assembly 2, a rubber roller assembly 3, a shaft 4, and a transmission assembly 5.

[0025] The frame 1 is used to fix the heating element assembly 2, the rubber roller assembly 3, the transmission assembly 5, and the shaft 4.

[0026] The heating element assembly 2 is fixed on the frame 1 by the shaft 4 and rotates around the shaft 4. Several springs 8 are provided on the rear side of the heating element assembly 2. Under the action of the springs 8, the heating element assembly 2 can press the rubber roller forward.

[0027] The rubber roller assembly 3 has a rubber roller 32 in the middle, and bushings 31 at both ends. One end of the rubber roller assembly 3 is equipped with a transmission mechanism 33. The transmission component 5 of the frame 1 drives the transmission mechanism 33 of the rubber roller 32, so that the rubber roller 32 rotates between the bushings 31.

[0028] The transmission component 5 is the power source of the rubber roller assembly 3. It consists of a motor 51 and a gear set 52. The power of the motor 51 is transmitted to the transmission mechanism 33 of the rubber roller assembly 3 through the gear set 52, thereby causing the rubber roller 32 to rotate. The gear set 52 is mounted on the frame 1 and is connected to the rubber roller assembly 3 for transmission.

[0029] Shaft 4 passes through the holes between the heating element assemblies 2 and the holes on the frame 1, so that the heating element assemblies 2 are fixed on the frame 1 and the heating element assemblies 2 rotate around shaft 4.

[0030] The heating element assembly 2 and the rubber roller assembly 3 are arranged side by side on the frame 1, and the heating element assembly 2 can contact the rubber roller assembly 3. A transmission assembly 5 is installed on one side of the frame 1. Both the left and right ends of the frame 1 are provided with locking structures. The rubber roller assembly 3 can be locked into the locking structure. The locking structure includes a locking inlet section 6 and a locking outlet section 7, which are continuously connected. The top of the locking inlet section 6 is a wide-mouth structure, which can guide the insertion of the bushing 31. The structure of the locking inlet section 6 is wider at the top and narrower at the bottom, which is conducive to the installation of the bushing 31. The locking outlet section 7 is an arc structure, and the width of its opening is slightly smaller than the diameter of the bushing 31.

[0031] In use, the rubber roller assembly 3 is inserted from the open top of the clamping section 6 and moved down to the narrow opening at the bottom of the clamping section 6. Then, the rubber roller assembly 3 is pressed to pass through the narrow opening of the clamping section 7 and enter the interior of the clamping section 7. At this time, the bottom of the bushing 31 of the rubber roller assembly 3 is in fixed contact with the clamping section 7. At the same time, the forward pressure of the heating plate assembly 2 clamps the rubber roller assembly 3 at the clamping section 7 of the frame 1. When the heating plate assembly presses the rubber roller bracket, it is tilted forward, so that it has a downward component force, which has a certain strengthening effect on fixing the rubber roller 32. The clamping and fixing work is realized, thus replacing the function of the metal locking bracket.

[0032] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A rubber roller fixing mechanism for a thermal printer mechanism, comprising a frame (1), a heating element assembly (2), a rubber roller assembly (3), a shaft (4), and a transmission assembly (5), characterized in that, The frame (1) is used to fix the heating element assembly (2), the rubber roller assembly (3), the transmission assembly (5) and the shaft (4); the shaft (4) passes through the holes between the heating element assemblies (2), so that the heating element assembly (2) is mounted on the frame (1) by the shaft (4) and rotates around the shaft (4); a number of springs (8) are provided on the rear side of the heating element assembly (2); a transmission mechanism (33) is provided at one end of the rubber roller assembly (3), and the transmission assembly (5) provided on the frame (1) is connected to the transmission mechanism (33); both the left and right ends of the frame (1) are provided with locking structures, and the rubber roller assembly (3) can be locked into the locking structures.

2. The rubber roller fixing mechanism for a thermal printer mechanism according to claim 1, characterized in that, The middle part of the rubber roller assembly (3) is the rubber roller (32), and the two ends of the rubber roller assembly (3) are provided with bushings (31). One end of the rubber roller (32) is connected to the transmission mechanism (33), and the rubber roller (32) can rotate inside the bushing (31).

3. The rubber roller fixing mechanism for a thermal printer mechanism according to claim 1, characterized in that, The transmission assembly (5) includes a motor (51) and a gear set (52). The motor (51) is connected to the gear set (52), and the gear set (52) is connected to the transmission mechanism (33). The gear set (52) is mounted on the frame (1).

4. The rubber roller fixing mechanism for a thermal printer mechanism according to claim 1, characterized in that, The heating element assembly (2) on the frame (1) is arranged side by side with the rubber roller assembly (3), and the heating element assembly (2) can contact the rubber roller assembly (3).

5. The rubber roller fixing mechanism for a thermal printer mechanism according to claim 4, characterized in that, The locking structure includes a locking inlet section (6) and a locking outlet section (7), which are continuously connected. The locking inlet section (6) has a structure that is wider at the top and narrower at the bottom.

6. The rubber roller fixing mechanism for a thermal printer mechanism according to claim 5, characterized in that, The clamping section (7) has an arc structure, and the width of the opening of the clamping section (7) is smaller than the diameter of the bushing (31).

7. A rubber roller fixing mechanism for a thermal printer mechanism according to any one of claims 1-6, characterized in that, The heating element assembly (2) is tilted forward toward the rubber roller (32).

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