Fixing structure of rubber roller

Abstract

The utility model relates to the technical field of thermal printer rubber covered roller installation, in particular to a rubber covered roller fixing structure which comprises a lower inner cover and a clearance position, the clearance position is arranged in the front end of the lower inner cover, a round hole containing cavity is formed in one side in the clearance position, and a first groove is fixedly connected to the other side of the clearance position. A rubber roller body is arranged at the front end of the clearance position, and shaft sleeves are installed on the outer portions of the two sides of the rubber roller body. According to the fixing structure of the rubber roller, parts such as clearance positions are arranged, in the assembling process, shaft sleeves are installed at the two ends of a rubber roller body respectively, one end of each shaft sleeve is clamped into a gear body, the end, without the gear body, of each shaft sleeve is inserted into a round hole containing cavity of a lower inner cover, the wall of each round hole containing cavity is an inclined face, and the edge of each shaft sleeve abuts against the corresponding round hole containing cavity; the shaft sleeve at the other end of the rubber roller is placed in the first groove of the lower inner cover, and then the second groove of the gear support assembly is pressed on the first groove, so that the problem that the rubber roller possibly interferes with the round hole of the lower inner cover and is not easy to insert when being inserted is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of thermal printer rubber roller installation, in particular to a rubber roller fixing structure. Background Art

[0002] Thermal printers are equipped with a rubber roller inside. One end of the rubber roller is a gear. The motor + gear set drives the gear on the rubber roller, so that the rubber roller rotates and rubs the paper forward. In terms of fixing the rubber roller, it is generally used that parts are used to press the rubber roller at both ends, and then two screws are used to lock it to the inner cover of the printer. The method of locking both ends with screws will increase the mold cost and labor operation cost.

[0003] According to the design of the existing fixing structure of the rubber roller, a very small gap is required during installation so that it can only rotate, but not too much gap can be left up and down or left and right to allow it to move. Therefore, when inserting the rubber roller, it may interfere with the circular hole of the lower inner cover and be difficult to insert. Therefore, it is not convenient when fixing, and its structure needs to be improved.

[0004] Now, a new type of fixing structure of the rubber roller is proposed to solve the above problems. Utility Model Content

[0005] The utility model aims to provide a fixing structure for a rubber roller, so as to solve the problem in the above background technology that when inserting the rubber roller, the rubber roller may interfere with the circular hole of the lower inner cover and is difficult to insert.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a fixing structure of a rubber roller, comprising a lower inner cover and an avoidance position, the interior of the front end of the lower inner cover is provided with the avoidance position, one side of the interior of the avoidance position is provided with a circular hole cavity, the other side of the avoidance position is fixedly connected with a first groove, the front end of the avoidance position is provided with a rubber roller body, shaft sleeves are installed on the outside of both sides of the rubber roller body, a gear body is fixedly sleeved on the outside of one side of the rubber roller body, a gear bracket assembly is provided on one side of the front end of the lower inner cover, and a second groove is provided at the bottom end of one side of the gear bracket assembly.

[0007] Preferably, the shaft sleeve abuts against the inclined surface.

[0008] Preferably, one side of the gear bracket assembly is movably connected to a first positioning screw, and the bottom end of the gear bracket assembly is movably connected to a second positioning screw.

[0009] Preferably, the gear bracket assembly is detachable from the lower inner cover via a first positioning screw and a second positioning screw.

[0010] Preferably, the inner wall of the circular hole cavity is an inclined surface.

[0011] Preferably, the positions of the first groove and the second groove coincide with each other, and the first groove and the second groove are semicircular.

[0012] Compared with the prior art, the utility model has the following beneficial effects: the fixing structure of the rubber roller not only facilitates the problem of inserting the rubber roller into the round hole for fixing, but also facilitates quick assembly and disassembly;

[0013] (1) By providing an avoidance position, a rubber roller body, a sleeve, a gear support assembly, a gear body, a circular hole cavity, a first groove, and a second groove, since one end of the avoidance position of the rubber roller body of the lower inner cover has a circular hole cavity that can accommodate the rubber roller sleeve, and the wall of the circular hole cavity is an inclined surface, the other end of the avoidance position of the lower inner cover has a first groove, and the rubber roller sleeve can be placed on it, and the gear support assembly also has a corresponding second groove that can be pressed on the sleeve. During assembly, the sleeves are respectively installed at both ends of the rubber roller body, and one end is then inserted into the gear body, and the sleeve at the end without the gear body is inserted into the circular hole cavity of the lower inner cover, the wall of the circular hole cavity is an inclined surface and the edge of the sleeve is in contact with the circular hole cavity, the sleeve at the other end of the rubber roller is placed in the first groove of the lower inner cover, and then the second groove of the gear support assembly is pressed on it;

[0014] (2) By providing the first positioning screw and the second positioning screw, after the assembly is completed, the gear bracket assembly can be locked on the lower inner cover by using the first positioning screw and the second positioning screw respectively, so that the assembly and disassembly are convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the front three-dimensional structure of the utility model;

[0016] Figure 2 This is a schematic structural diagram of the connection between the gear body and the roller shaft of the utility model;

[0017] Figure 3 It is a side view of the three-dimensional structure of the connection mode between the avoidance space and the circular hole cavity of the utility model;

[0018] Figure 4 This is a schematic diagram of the enlarged cross-sectional structure of B and C of the utility model.

[0019] Figure 5 It is a schematic diagram of the three-dimensional structure of the second groove side of the utility model.

[0020] In the figure: 1, lower inner cover; 2, avoidance position; 3, rubber roller body; 4, shaft sleeve; 5, gear bracket assembly; 6, gear body; 7, circular hole cavity; 8, first groove; 9, second groove; 10, first positioning screw; 11, second positioning screw. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] Example 1: Please refer to Figure 1-5 A fixing structure of a rubber roller comprises a lower inner cover 1 and an avoidance position 2, wherein the avoidance position 2 is arranged inside the front end of the lower inner cover 1, a circular hole cavity 7 is arranged inside the avoidance position 2 on one side, a first groove 8 is fixedly connected to the other side of the avoidance position 2, a rubber roller body 3 is arranged at the front end of the avoidance position 2, shaft sleeves 4 are installed outside the two sides of the rubber roller body 3, a gear body 6 is sleeved and fixed outside the one side of the rubber roller body 3, a gear support assembly 5 is arranged at one side of the front end of the lower inner cover 1, and a second groove 9 is arranged at the bottom end of one side of the gear support assembly 5;

[0023] The shaft sleeve 4 is in contact with the inclined surface, and the inner wall of the circular hole cavity 7 is an inclined surface;

[0024] The positions of the first groove 8 and the second groove 9 coincide with each other, and the first groove 8 and the second groove 9 are semicircular;

[0025] Specifically, Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, since one end of the avoidance position 2 of the rubber roller body 3 of the lower inner cover 1 has a circular hole cavity that can accommodate the rubber roller sleeve 4, the wall of the circular hole cavity 7 is an inclined surface, and the other end of the avoidance position 2 of the lower inner cover 1 has a first groove 8, on which the rubber roller sleeve 4 can be placed, and the gear support assembly 5 also has a corresponding second groove 9, which can be pressed on the sleeve 4. During assembly, the sleeves 4 are respectively installed at both ends of the rubber roller body 3, and one end is then inserted into the gear body 6, and the sleeve 4 at the end without the gear body 6 is inserted into the circular hole cavity 7 of the lower inner cover 1. The wall of the circular hole cavity 7 is an inclined surface and the edge of the sleeve 4 is in contact with the circular hole cavity 7. The sleeve 4 at the other end of the rubber roller 3 is placed in the first groove 8 of the lower inner cover 1, and then the second groove 9 of the gear support assembly 5 is pressed on it.

[0026] Embodiment 2: A first positioning screw 10 is movably connected to one side of the gear bracket assembly 5, and a second positioning screw 11 is movably connected to the bottom end of the gear bracket assembly 5;

[0027] The gear bracket assembly 5 is detachable from the lower inner cover 1 through the first positioning screw 10 and the second positioning screw 11;

[0028] Specifically, Figure 1 and Figure 3 As shown, after the assembly is completed, the gear bracket assembly 5 can be locked on the lower inner cover 1 using the first positioning screw 10 and the second positioning screw 11 respectively, so that it is convenient to load and unload.

[0029] Working principle: When the utility model is in use, first, because one end of the avoidance position 2 of the rubber roller body 3 of the lower inner cover 1 has a circular hole cavity that can accommodate the rubber roller sleeve 4, the wall of the circular hole cavity 7 is an inclined surface, and the other end of the avoidance position 2 of the lower inner cover 1 has a first groove 8, on which the rubber roller sleeve 4 can be placed, and the gear bracket assembly 5 also has a corresponding second groove 9, which can be pressed on the sleeve 4. During assembly, the sleeves 4 are respectively installed at both ends of the rubber roller body 3, and one end is then inserted into the gear body 6, and the sleeve 4 at the end without the gear body 6 is inserted into the circular hole cavity 7 of the lower inner cover 1. The wall of the circular hole cavity 7 is an inclined surface and the edge of the sleeve 4 is in contact with the circular hole cavity 7, the sleeve 4 at the other end of the rubber roller 3 is placed in the first groove 8 of the lower inner cover 1, and then the second groove 9 of the gear bracket assembly 5 is pressed on it. After that, after the assembly is completed, the gear bracket assembly 5 can be locked on the lower inner cover 1 using the first positioning screw 10 and the second positioning screw 11, so that loading and unloading are convenient.

[0030] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. A fixing structure for a rubber roller, comprising a lower inner cover (1) and a space avoidance position (2), characterized in that: The front end of the lower inner cover (1) is provided with an escape position (2), one side of the escape position (2) is provided with a circular hole cavity (7), the other side of the escape position (2) is fixedly connected with a first groove (8), the front end of the escape position (2) is provided with a rubber roller body (3), the two sides of the rubber roller body (3) are externally mounted with shaft sleeves (4), one side of the rubber roller body (3) is sleeved and fixed with a gear body (6), one side of the front end of the lower inner cover (1) is provided with a gear support assembly (5), and the bottom end of one side of the gear support assembly (5) is provided with a second groove (9).

2. The fixing structure of a rubber roller according to claim 1, characterized in that: The shaft sleeve (4) abuts against the inclined surface.

3. The fixing structure of a rubber roller according to claim 1, characterized in that: A first positioning screw (10) is movably connected to one side of the gear support assembly (5), and a second positioning screw (11) is movably connected to the bottom end of the gear support assembly (5).

4. The fixing structure of a rubber roller according to claim 3, characterized in that: The gear support assembly (5) is detachable from the lower inner cover (1) via a first positioning screw (10) and a second positioning screw (11).

5. The fixing structure of a rubber roller according to claim 1, characterized in that: The inner wall of the circular hole cavity (7) is in the form of an inclined surface.

6. The fixing structure of a rubber roller according to claim 1, characterized in that: The positions of the first groove (8) and the second groove (9) coincide with each other, and the first groove (8) and the second groove (9) are semicircular.

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