Printer roll shaft convenient to maintain

Abstract

The utility model discloses a printer roll shaft convenient to maintain, which relates to the technical field of printers and comprises a roll shaft rod, a first shaft sleeve is arranged at the left end of the roll shaft rod through a locking piece, a first linkage rod is arranged on the inner side of the first shaft sleeve, a positioning sleeve is arranged at the left end of the first linkage rod, and a driving wheel is fixedly connected to the outer side of the first linkage rod. The side face of the positioning sleeve is fixedly connected with a first connecting disc, a mounting frame is arranged on the side face of the first connecting disc, and the first connecting disc is fixedly connected with a second connecting disc located on the outer side of the mounting frame through a connecting screw rod. A locking plate in the locking piece is movably installed on the inner side of a first linkage rod through a protruding rod and a spring, the locking plate can be separated from a first shaft sleeve by pressing the locking plate, meanwhile, a positioning sleeve of a second linkage rod on the inner side of a second shaft sleeve slides on the inner side of a positioning groove, and therefore the roller shaft rod can be rapidly detached, replaced and maintained.

Description

Technical Field

[0001] The utility model relates to the technical field of printers, in particular to a roller shaft for printers which is convenient to maintain. Background Art

[0002] A printer is one of the output devices of a computer, used to print computer processing results on relevant media. There are three indicators to measure the quality of a printer: print resolution, print speed and noise. There are many types of printers, and according to whether the printing element has an impact action on the paper, they are divided into impact printers and non-impact printers.

[0003] After long-term use, the existing printer roller needs to be disassembled and replaced. However, the existing printer roller is installed inside the printer using a bearing seat and a mounting frame, which makes it inconvenient to disassemble and maintain it. Utility Model Content

[0004] The purpose of the utility model is to provide a printer roller that is easy to maintain, so as to solve the problem that the existing printer roller needs to be disassembled and replaced after long-term use, but the existing printer roller adopts a bearing seat and a mounting frame to be installed on the inside of the printer, which makes it inconvenient to disassemble and maintain it.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solution: a roller shaft for a printer with easy maintenance, comprising a roller shaft rod, the left end of the roller shaft rod is provided with a sleeve 1 through a locking piece, the inner side of the sleeve 1 is provided with a linkage rod 1, the left end of the linkage rod 1 is provided with a positioning sleeve, and the outer side of the linkage rod 1 is fixedly connected to a driving wheel, the side of the positioning sleeve is fixedly connected to a connecting disk 1, the side of the connecting disk 1 is provided with a mounting bracket, and the connecting disk 1 is fixedly connected to a connecting disk 2 located on the outer side of the mounting bracket through a connecting screw, the right side of the roller shaft rod is fixedly connected with a sleeve 2, the inner side of the sleeve 2 is provided with a linkage rod 2, the side of the linkage rod 2 is fixedly connected with a positioning plate, and the top ends of the linkage rod 2 and the linkage rod 1 are fixedly connected to a spline plate 2 and a spline plate 1 respectively.

[0006] As an optimal technical solution of the present invention, the locking piece includes a locking plate, a protruding rod and a spring, the locking plate is movably connected to the outer side of the linkage rod one through the protruding rod, and the locking plate is movably connected to the inner side of the shaft sleeve one, and the outer side of the protruding rod is sleeved with a spring; a slot is provided on the inner side of the roller shaft rod, and the two ends of the slot are respectively clamped with the spline plate one and the spline plate two at the top ends of the linkage rod one and the linkage rod two, and a side surface of the linkage rod one is provided with a locking piece clamped to the inner side of the shaft sleeve one, and the locking plate in the locking piece is movably installed on the inner side of the linkage rod one through the protruding rod and the spring. Pressing the locking plate can make the locking plate detach from the shaft sleeve one, and at the same time, the positioning sleeve of the linkage rod two on the inner side of the shaft sleeve two slides in the inner side of the positioning groove, so that the roller shaft rod can be quickly disassembled for replacement and maintenance.

[0007] As a preferred technical solution of the present invention, a ball is embedded on the inner side of the positioning sleeve, and the side surface of the ball is slidably connected to the outer side of the linkage rod.

[0008] As a preferred technical solution of the present invention, the bottom end of the connecting screw is located on the inner side of the connecting disk 1 and is threadedly connected to a nut.

[0009] As an optimal technical solution of the present invention, a convex ring is fixedly connected to the inner side of the connecting disk 2, and the convex ring is clamped on the inner side of the positioning sleeve; a driving wheel is installed on the outer side of the linkage rod 1, and the linkage rod 1 is movably connected to the inner side of the positioning sleeve through a ball bearing. The positioning sleeve is assembled on the mounting frame through the connecting disk 1 and the connecting disk 2 in cooperation with the connecting screw, which can realize the rapid installation and precise positioning of the roller shaft rod.

[0010] As a preferred technical solution of the present invention, mounting holes are provided at the bottom and top of the mounting frame.

[0011] As a preferred technical solution of the present invention, a threaded hole is provided on the side of the positioning plate on the outside of the second linkage rod, and the inner side of the threaded hole is threadedly connected to the bottom end of the screw.

[0012] As a preferred technical solution of the present invention, a clamping groove is provided on the inner side of the roller shaft rod, and the inner side of the clamping groove is clamped with the spline plate 1 and the spline plate 2 at the top ends of the linkage rod 1 and the linkage rod 2.

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] 1. The utility model provides a card slot on the inner side of the roller shaft rod, and the two ends of the card slot are respectively engaged with the spline plate 1 and the spline plate 2 at the top of the linkage rod 1 and the linkage rod 2, and a locking piece is provided on the side of the linkage rod 1 that is engaged with the inner side of the shaft sleeve 1. The locking plate in the locking piece is movably installed on the inner side of the linkage rod 1 through a protruding rod and a spring. Pressing the locking plate can disengage the locking plate from the shaft sleeve 1, and at the same time, the positioning sleeve of the linkage rod 2 on the inner side of the shaft sleeve 2 slides inside the positioning groove, so that the roller shaft rod can be quickly disassembled for replacement and maintenance.

[0015] 2. The utility model installs the driving wheel on the outside of the linkage rod 1, and the linkage rod 1 is movably connected to the inner side of the positioning sleeve through the ball bearing. The positioning sleeve is assembled on the mounting frame through the connection plate 1 and the connection plate 2 and the connecting screw, which can realize the rapid installation and precise positioning of the roller shaft. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is the structural front view of the utility model;

[0017] Figure 2 This is a partial front view of the structure of the utility model;

[0018] Figure 3 This is a structural roller rod diagram of the utility model;

[0019] Figure 4 This is a diagram showing the combination of the structural connection plate 1 and the connection plate 2 of the present invention;

[0020] Figure 5 This is a side view of the structural linkage rod of the utility model;

[0021] Figure 6 This is a side view of the second structural linkage rod of the utility model;

[0022] Figure 7 This is a diagram of the structural locking piece of the present utility model.

[0023] In the figure: 1. roller rod; 2. locking piece; 201. locking plate; 202. protruding rod; 203. spring; 3. bushing 1; 4. linkage rod 1; 5. ball; 6. positioning sleeve; 7. connecting plate 1; 8. mounting bracket; 9. mounting hole; 10. connecting plate 2; 11. connecting screw; 12. protruding ring; 13. nut; 14. spline plate 1; 15. slot; 16. linkage rod 2; 17. screw; 18. bushing 2; 19. positioning plate; 20. threaded hole; 21. spline plate 2; 22. driving wheel. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0025] See also Figure 1-7 The utility model provides a roller shaft for a printer with easy maintenance, comprising a roller shaft rod 1, a sleeve 3 is provided on the left end of the roller shaft rod 1 through a locking piece 2, a linkage rod 4 is provided on the inner side of the sleeve 3, a positioning sleeve 6 is provided on the left end of the linkage rod 4, and a driving wheel 22 is fixedly connected to the outer side of the linkage rod 4, a connecting disk 7 is fixedly connected to the side of the positioning sleeve 6, a mounting bracket 8 is provided on the side of the connecting disk 7, and the connecting disk 7 is fixedly connected to a connecting disk 2 10 located on the outer side of the mounting bracket 8 through a connecting screw 11, the right side of the roller shaft rod 1 is fixedly connected to a sleeve 2 18, a linkage rod 2 16 is provided on the inner side of the sleeve 2 18, a positioning plate 19 is fixedly connected to the side of the linkage rod 2 16, and a spline plate 2 21 and a spline plate 14 are fixedly connected to the top of the linkage rod 2 16 and the linkage rod 4 respectively.

[0026] The locking member 2 includes a locking plate 201, a protruding rod 202 and a spring 203. The locking plate 201 is movably connected to the outer side of the linkage rod 4 through the protruding rod 202, and the locking plate 201 is movably connected to the inner side of the shaft sleeve 3. The outer side of the protruding rod 202 is sleeved with a spring 203. A card slot 15 is provided on the inner side of the roller shaft rod 1. The two ends of the card slot 15 are respectively engaged with the spline plate 14 and the spline plate 21 at the top of the linkage rod 4 and the linkage rod 2 16. The side of the linkage rod 4 is provided with a locking member 2 that is engaged with the inner side of the shaft sleeve 3. The locking plate 201 in the locking member 2 is movably installed on the inner side of the linkage rod 4 through the protruding rod 202 and the spring 203. Pressing the locking plate 201 can make the locking plate 201 separate from the shaft sleeve 3, and at the same time, the shaft sleeve 18 The positioning sleeve 6 of the inner linkage rod 2 16 slides on the inside of the positioning groove, so that the roller shaft rod 1 can be quickly disassembled for replacement and maintenance. The inner side of the positioning sleeve 6 is inlaid with a ball 5, and the side of the ball 5 is slidably connected to the outer side of the linkage rod 4. The bottom end of the connecting screw 11 is located on the inner side of the connecting disk 1 7 and is threadedly connected to a nut 13. The inner side of the connecting disk 2 10 is fixedly connected with a convex ring 12, which is clamped on the inner side of the positioning sleeve 6; a driving wheel 22 is installed on the outside of the linkage rod 4, and the linkage rod 4 is movably connected to the inner side of the positioning sleeve 6 through the ball 5. The positioning sleeve 6 is assembled on the mounting frame 8 through the connecting disk 1 7 and the connecting disk 2 10 and the connecting screw 11, which can realize rapid installation and precise positioning of the roller shaft rod 1.

[0027] Mounting holes 9 are provided at the bottom and top of the mounting frame 8, and a threaded hole 20 is provided on the side of the positioning plate 19 on the outside of the linkage rod 2 16. The inner side of the threaded hole 20 is threadedly connected to the bottom end of the screw 17, and a card slot 15 is provided on the inner side of the roller shaft rod 1. The inner side of the card slot 15 is clamped with the spline plate 14 and the spline plate 2 21 at the top of the linkage rod 1 4 and the linkage rod 2 16.

[0028] When in use, first, when it is necessary to remove the lower roller shaft rod 1, unscrew the screw 17, press the locking plate 201, and push the roller shaft rod 1 to the right to quickly remove the lower roller shaft rod 1. A card slot 15 is provided on the inner side of the roller shaft rod 1. The two ends of the card slot 15 are respectively connected with the spline plate 14 and the spline plate 21 at the top of the linkage rod 1 4 and the linkage rod 2 16, and the side of the linkage rod 1 4 is provided with a locking piece 2 that is connected to the inner side of the shaft sleeve 1 3. The locking plate 201 in the locking piece 2 is movably installed on the linkage rod 1 4 through the protruding rod 202 and the spring 203. On the inside, pressing the locking plate 201 can make the locking plate 201 detach from the sleeve 3, and at the same time, the positioning sleeve 6 of the linkage rod 2 16 on the inside of the sleeve 2 18 slides on the inside of the positioning groove, so that the roller shaft rod 1 can be quickly disassembled for replacement and maintenance. The driving wheel 22 is installed on the outside of the linkage rod 4, and the linkage rod 14 is movably connected to the inside of the positioning sleeve 6 through the ball 5. The positioning sleeve 6 is assembled on the mounting frame 8 through the connecting plate 1 7 and the connecting plate 2 10 and the connecting screw 11, which can realize the rapid installation and precise positioning of the roller shaft rod 1.

[0029] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A roller shaft for a printer with convenient maintenance, comprising a roller shaft rod (1), characterized in that: The left end of the roller shaft rod (1) is provided with a shaft sleeve (3) through a locking member (2), the inner side of the shaft sleeve (3) is provided with a linkage rod (4), the left end of the linkage rod (4) is provided with a positioning sleeve (6), and the outer side of the linkage rod (4) is fixedly connected to a driving wheel (22), the side of the positioning sleeve (6) is fixedly connected to a connecting plate (7), the side of the connecting plate (7) is provided with a mounting frame (8), and the connecting plate (7) is connected through a connecting member. The connecting screw rod (11) is fixedly connected to a second connecting plate (10) located outside the mounting frame (8), and the right side of the roller shaft rod (1) is fixedly connected to a second shaft sleeve (18). The inner side of the second shaft sleeve (18) is provided with a second linkage rod (16), and the side of the second linkage rod (16) is fixedly connected to a positioning plate (19), and the top ends of the second linkage rod (16) and the first linkage rod (4) are fixedly connected to a second spline plate (21) and a first spline plate (14) respectively.

2. The printer roller with easy maintenance according to claim 1, characterized in that: The locking member (2) comprises a locking plate (201), a protruding rod (202) and a spring (203); the locking plate (201) is movably connected to the outside of the linkage rod (4) via the protruding rod (202); the locking plate (201) is movably connected to the inside of the shaft sleeve (3); and the outside of the protruding rod (202) is sleeved with a spring (203).

3. The printer roller with easy maintenance according to claim 1, characterized in that: The inner side of the positioning sleeve (6) is inlaid with a ball (5), and the side surface of the ball (5) is slidably connected to the outer side of the linkage rod (4).

4. The printer roller with easy maintenance according to claim 1, characterized in that: The bottom end of the connecting screw (11) is located on the inner side of the connecting plate (7) and is threadedly connected to a nut (13).

5. The printer roller with easy maintenance according to claim 1, characterized in that: The inner side of the second connecting disk (10) is fixedly connected with a convex ring (12), and the convex ring (12) is clamped on the inner side of the positioning sleeve (6).

6. The printer roller with easy maintenance according to claim 1, characterized in that: The bottom and top of the mounting frame (8) are both provided with mounting holes (9).

7. The printer roller with easy maintenance according to claim 1, characterized in that: A threaded hole (20) is provided on the side of the positioning plate (19) outside the second linkage rod (16), and the inner side of the threaded hole (20) is threadedly connected to the bottom end of the screw (17).

8. The printer roller with easy maintenance according to claim 1, characterized in that: A clamping groove (15) is provided on the inner side of the roller shaft rod (1), and the inner side of the clamping groove (15) is clamped with the spline plate 1 (14) and the spline plate 2 (21) at the top ends of the linkage rod 1 (4) and the linkage rod 2 (16).

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