Extensible charging roller

Abstract

The utility model relates to the technical field of charging rollers, and discloses an extensible charging roller which comprises a charging roller body, a through hole is formed in one side of the charging roller body, a baffle is fixedly connected to the middle of an inner cavity of the through hole, thrust springs are fixedly connected to the two sides of the baffle, and an iron core is fixedly connected to one side of each thrust spring. The surface of the iron core is slidably connected with the interior of the through hole. According to the extensible charging roller, two thrust springs are arranged, one side of each thrust spring is fixed to a baffle, the other side of each thrust spring is fixedly connected with an iron core, so that the iron core can flexibly stretch out and draw back in a through hole, by rotating the iron core, the iron core drives a guide block on the top, the guide block abuts against the interior of a clamping groove, and therefore the charging roller can stretch out and draw back conveniently. The guide block is arranged in the clamping groove and matched with the thrust of the thrust spring, so that the iron core stably stays at the needed position, and in order to prevent the guide block from loosening in the using process, when the guide block rotates into the clamping groove, the insertion rod on one side of the guide block can be inserted into the insertion hole.

Description

Technical Field

[0001] The utility model relates to the technical field of charging rollers, in particular to an elongated charging roller. Background Art

[0002] The charging roller is a new environmentally friendly charging method that reduces the production of ozone and charges evenly and noiselessly. It is widely used in laser printers and also in low-speed copiers.

[0003] Existing charging rollers are usually designed with a fixed length and cannot be flexibly adjusted according to the different models of equipment used. In the application of modern office equipment such as laser printers, digital copiers, etc., different models of toner cartridges often need to be matched with charging rollers of specific lengths to achieve the best charging effect. However, due to the wide variety of toner cartridge models on the market, each model has different requirements for the size of the charging roller, which makes it difficult for traditional fixed-length charging rollers to meet diverse market demands. Utility Model Content

[0004] The technical problem to be solved by the utility model is that in the prior art, the charging roller is usually designed to be of fixed length and cannot adapt to different types of office equipment, such as laser printers and digital copiers. The toner cartridges of these devices require a charging roller of a specific length to achieve the best effect. However, there are many types of toner cartridges on the market, and the requirements for the size of the charging roller are different, resulting in the disadvantage that the traditional fixed-length charging roller is difficult to meet the demand. For this reason, we propose a charging roller that can be extended.

[0005] In order to achieve the above-mentioned purpose, the present application adopts the following technical solution: an extendable charging roller, comprising a charging roller body, a through hole is opened on one side of the charging roller body, a baffle is fixedly connected to the middle of the inner cavity of the through hole, thrust springs are fixedly connected to both sides of the baffle, an iron core is fixedly connected to one side of the thrust spring, and the surface of the iron core is slidably connected to the inside of the through hole.

[0006] Preferably, two guide grooves are provided at the top of the inner cavity of the through hole, a guide block is fixedly connected to the top of the iron core, and the surface of the guide block is slidably connected to the inside of the guide groove.

[0007] Preferably, a clamping slot is provided at one end of the inner cavity of the guide slot, the number of the clamping slots is multiple, and the surface of the guide block abuts against the inside of the clamping slot.

[0008] Preferably, a plug hole is provided on one side of the inner cavity of the card slot, and an insertion rod is fixedly connected to one side of the guide block.

[0009] Preferably, the surface of the insertion rod is slidably connected to the inside of the insertion hole, and the size of the insertion rod matches the internal size of the insertion hole.

[0010] Preferably, the surface of the iron core is plated with a copper layer.

[0011] The technical effects and advantages of the present utility model:

[0012] In the present utility model, through the arrangement of two thrust springs, one side of the thrust spring is fixed to the baffle, and at the same time, the other side of the thrust spring is fixedly connected to the iron core, so that the iron core can flexibly expand and contract in the through hole, and further enable the charging roller to meet different length requirements. When it is necessary to fix the position of the iron core, the iron core can be rotated to drive the guiding block at the top, so that the guiding block abuts against the inside of the card slot, and with the thrust of the thrust spring, the iron core can stably stay at the required position. In order to prevent the guiding block from loosening during use, a locking mechanism is also designed between the insertion rod and the insertion hole. When the guiding block rotates into the inside of the card slot, the insertion rod on one side of the guiding block can be inserted into the insertion hole to ensure that the guiding block is fixed in the card slot, thereby realizing the adjustment of the length of the charging roller. Description of the Drawings

[0013] Figure 1 is the front view structural schematic diagram of the present utility model;

[0014] Figure 2 is the disassembled schematic diagram of the charging roller and the iron core of the present utility model;

[0015] Figure 3 is the internal sectional view structural schematic diagram of the charging roller of the present utility model;

[0016] Figure 4 is the internal sectional view structural schematic diagram of the insertion hole of the present utility model;

[0017] Figure 5 is the disassembled schematic diagram of the insertion rod structure of the present utility model.

[0018] Legend Explanation: 1. Charging roller body; 2. Through hole; 3. Baffle; 4. Thrust spring; 5. Iron core; 6. Guiding block; 7. Card slot; 8. Insertion hole; 9. Insertion rod; 10. Guiding groove. Detailed Embodiment

[0019] Now, with reference to the drawings and preferred embodiments, the present utility model will be further described in detail. These drawings are all simplified schematic diagrams, only illustrating the basic structure of the present utility model in a schematic manner, so they only show the components related to the present utility model.

[0020] Refer to Figure 1 、 Figure 2 and Figure 3As shown in the figure, the present utility model provides a technical solution: an extendable charging roller, which includes a charging roller body 1. A through hole 2 is provided on one side of the charging roller body 1. A baffle 3 is fixedly connected to the middle of the inner cavity of the through hole 2. Thrust springs 4 are fixedly connected to both sides of the baffle 3. One side of the thrust spring 4 is fixedly connected to an iron core 5. The surface of the iron core 5 is slidably connected to the inside of the through hole 2. Through the arrangement of the two thrust springs 4, with one side of the thrust spring 4 fixed to the baffle 3 and the other side of the thrust spring 4 fixed to the iron core 5, the iron core 5 can flexibly expand and contract within the through hole 2, thereby realizing the adjustment of the length of the charging roller, and further enabling the use of charging rollers that meet different length requirements.

[0021] Referring to Figure 2 and Figure 3 As shown in the figure, in this embodiment: Two guiding grooves 10 are provided at the top of the inner cavity of the through hole 2. A guiding block 6 is fixedly connected to the top of the iron core 5. The surface of the guiding block 6 is slidably connected to the inside of the guiding groove 10. The sliding connection between the guiding block 6 and the guiding groove 10 ensures the precise movement of the iron core 5 within the inner cavity of the through hole 2, thereby improving the stability and reliability of the telescoping of the charging roller.

[0022] Referring to Figure 3 , Figure 4 and Figure 5 As shown in the figure, in this embodiment: A clamping groove 7 is provided at one end of the inner cavity of the guiding groove 10. The number of the clamping grooves 7 is multiple. The surface of the guiding block 6 abuts against the inside of the clamping groove 7. When it is necessary to fix the position of the iron core 5, the iron core 5 can be rotated to drive the guiding block 6 at the top, so that the guiding block 6 abuts against the inside of the clamping groove 7, and with the thrust of the thrust spring 4, the iron core 5 can be stably stopped at the required position.

[0023] Referring to Figure 4 and Figure 5 As shown in the figure, in this embodiment: An insertion hole 8 is provided on one side of the inner cavity of the clamping groove 7. An insertion rod 9 is fixedly connected to one side of the guiding block 6. In order to prevent the guiding block 6 from loosening during use, a locking mechanism is also designed between the insertion rod 9 and the insertion hole 8. When the guiding block 6 rotates into the inside of the clamping groove 7, the insertion rod 9 on one side of the guiding block 6 can be inserted into the insertion hole 8 to ensure that the guiding block 6 is fixed in the clamping groove 7.

[0024] Referring to Figure 4 and Figure 5 As shown in the figure, in this embodiment: The surface of the insertion rod 9 is slidably connected to the inside of the insertion hole 8. The size of the insertion rod 9 is consistent with the internal size of the insertion hole 8. When the size of the insertion rod 9 is consistent with the internal size of the insertion hole 8, it can ensure good fitting accuracy between the insertion rod 9 and the insertion hole 8, improve the tightness and stability of the connecting components, and further improve the reliability of the overall structure.

[0025] Referring toFigure 1 As shown in the figure, in this embodiment: The surface of the iron core 5 is plated with a copper layer. Plating the surface of the iron core 5 with copper can also play an anti-corrosion role. The copper layer can effectively isolate moisture and harmful gases in the air, reduce the oxidation and corrosion of the iron core 5, thereby improving the stability and reliability of the entire device. In addition, the surface of the copper layer has a relatively high smoothness, which helps to reduce the friction between the iron core 5 and the surrounding medium, reduce noise, and improve the running smoothness of the device.

[0026] Working principle: Through the setting of two thrust springs 4, with one side of the thrust spring 4 fixed to the baffle 3 and the other side of the thrust spring 4 fixedly connected to the iron core 5, the iron core 5 can flexibly expand and contract in the through hole 2, thereby realizing the adjustment of the length of the charging roller, and further enabling the use of charging rollers that meet different length requirements. The sliding connection between the guide block 6 and the guide groove 10 ensures the precise movement of the iron core 5 in the inner cavity of the through hole 2, thereby improving the stability and reliability of the telescoping of the charging roller. When it is necessary to fix the position of the iron core 5, the iron core 5 can be rotated to drive the guide block 6 at the top, so that the guide block 6 abuts against the inside of the card slot 7, and with the thrust of the thrust spring 4, the iron core 5 can stay stably at the required position. In order to prevent the guide block 6 from loosening during use, a locking mechanism is also designed between the insertion rod 9 and the insertion hole 8. When the guide block 6 rotates into the inside of the card slot 7, the insertion rod 9 on one side of the guide block 6 can be inserted into the insertion hole 8 to ensure that the guide block 6 is fixed in the card slot 7. When the size of the insertion rod 9 matches the internal size of the insertion hole 8, it can ensure good fitting accuracy between the insertion rod 9 and the insertion hole 8, improve the tightness and stability of the connecting components, and further improve the reliability of the overall structure. Plating the surface of the iron core 5 with copper can also play an anti-corrosion role. The copper layer can effectively isolate moisture and harmful gases in the air, reduce the oxidation and corrosion of the iron core 5, thereby improving the stability and reliability of the entire device. In addition, the surface of the copper layer has a relatively high smoothness, which helps to reduce the friction between the iron core 5 and the surrounding medium, reduce noise, and improve the running smoothness of the device.

[0027] Finally, it should be noted that: The above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. An extendable charging roller, comprising a charging roller body (1), characterized in that: One side of the charging roller body (1) is provided with a through hole (2). In the middle of the inner cavity of the through hole (2), a baffle (3) is fixedly connected. On both sides of the baffle (3), a thrust spring (4) is fixedly connected. On one side of the thrust spring (4), an iron core (5) is fixedly connected. The surface of the iron core (5) is slidably connected to the inside of the through hole (2).

2. The extendable charging roller according to claim 1, characterized in that: At the top of the inner cavity of the through hole (2), two guiding grooves (10) are provided. At the top of the iron core (5), a guiding block (6) is fixedly connected. The surface of the guiding block (6) is slidably connected to the inside of the guiding groove (10).

3. The extendable charging roller according to claim 2, wherein: At one end of the inner cavity of the guiding groove (10), a clamping groove (7) is provided. The number of the clamping grooves (7) is multiple. The surface of the guiding block (6) abuts against the inside of the clamping groove (7).

4. The extendable charging roller according to claim 3, wherein: On one side of the inner cavity of the clamping groove (7), a jack (8) is provided. On one side of the guiding block (6), a plug rod (9) is fixedly connected.

5. The extendable charging roller according to claim 4, characterized in that: The surface of the plug rod (9) is slidably connected to the inside of the jack (8). The size of the plug rod (9) matches the size of the inside of the jack (8).

6. The extendable charging roller according to claim 1, wherein: The surface of the iron core (5) is plated with a copper layer.

Images