Fixing device for coded disc of encoder

Abstract

The utility model discloses a fixing device for a coded disc of an encoder, and relates to the technical field of encoders. Comprising a rotating shaft, the outer surface of the rotating shaft is sleeved with a code disc body, the rotating shaft on the left side face and the right side face of the code disc body is sleeved with a pressing disc, and a first limiting mechanism is arranged between the pressing disc and the code disc body, a rectangular groove is formed in the right side face of the rotating shaft, and a sealing mechanism is fixedly installed on the right side face, corresponding to the rectangular groove, of the rotating shaft; a driving mechanism is installed between the left side face of the sealing mechanism and the inner wall of the left side of the rectangular groove, fixing blocks are fixedly installed on the front, back, upper and lower side faces of the driving mechanism, rectangular openings are formed in the rotating shafts corresponding to the fixing blocks, and blocking mechanisms are fixedly installed on the outer surfaces of the fixing blocks. According to the utility model, the code disc main body can be conveniently and rapidly disassembled and assembled, the installation precision of the code disc main body is higher, the code disc main body can be installed more firmly and stably, the code disc main body is not easy to damage, and the service life of the code disc main body is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of encoders, in particular to a fixing device for an encoder code disc. Background Art

[0002] A photoelectric encoder is a sensor that converts the mechanical geometric displacement on the output shaft into pulses or digital quantities through photoelectric conversion. The photoelectric encoder consists of a light source, an optical code disk, and a photosensitive element.

[0003] In the prior art, the accuracy of encoder use is particularly affected by the assembly accuracy of the code disc, which can easily cause the encoder to be eccentric and reduce accuracy and service life. Conventional code discs are fixed on the shaft using nuts, and their precision is completely dependent on the workers' proficiency. This often leads to insufficient assembly accuracy and loose fixation of the code disc, which can easily loosen and cause the code disc to rotate on the shaft. Tightening the nut can also cause damage to the code disc, affecting normal use. Utility Model Content

[0004] The utility model provides a fixing device for an encoder code disc to solve the problems in the background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a fixing device for an encoder code disk, comprising a rotating shaft, the outer surface of the rotating shaft is sleeved with a code disk body, the rotating shafts on the left and right sides of the code disk body are sleeved with pressure disks, and a first limiting mechanism is arranged between the pressure disk and the code disk body, a rectangular groove is opened on the right side of the rotating shaft, a sealing mechanism is fixedly installed on the right side of the rotating shaft corresponding to the rectangular groove, a driving mechanism is installed between the left side of the sealing mechanism and the left inner wall of the rectangular groove, fixed blocks are fixedly installed on the front and rear and upper and lower sides of the driving mechanism, and rectangular openings are opened on the rotating shafts corresponding to the fixed blocks, blocking mechanisms are fixedly installed on the outer surfaces of the fixed blocks, and the left and right blocking mechanisms press and fix the left and right pressure disks, and a second limiting mechanism is arranged between the blocking mechanism and the pressure disk.

[0006] Furthermore, the first limiting mechanism includes a limiting block and a limiting groove. Four limiting blocks are evenly arranged along the circumferential direction on the side of the clamping plate facing the code disc body. A limiting groove is opened on the code disc body corresponding to the limiting block, and the limiting block is inserted in the limiting groove. The second limiting mechanism has the same structure as the first limiting mechanism.

[0007] Furthermore, the sealing mechanism includes a sealing plate and a locking bolt, and the sealing plate is fixedly mounted on the right side of the rotating shaft by the locking bolt.

[0008] Furthermore, the driving mechanism includes a bearing assembly, a ball screw and a ball nut. There are two bearing assemblies on the left and right, and a ball screw is mirrored between the left and right bearing assemblies. The facing surfaces of the ball screws are fixedly connected. Ball nuts are fixedly installed on the ball screws, and the outer surface of the ball nut is fixedly connected to the fixed block.

[0009] Furthermore, the right side end of the ball screw is movably inserted into the right side of the sealing plate, and the upper and lower sides of the ball screw are fixedly installed with elastic buckles, which are buckled and fixed to the outer surface of the sealing plate, and the right side of the ball screw is provided with a hexagonal hole.

[0010] Furthermore, the blocking mechanism includes a mounting groove, a spring and a stopper, the outer surface of the fixed block is provided with a mounting groove, a spring is fixedly mounted on the inner wall of the mounting groove, a stopper is fixedly mounted on the outer end of the spring, and the stopper is fitted with the clamping disk.

[0011] Furthermore, a notch is provided on the pressing plate at a position corresponding to the stopper.

[0012] Compared with the prior art, the utility model provides a fixing device for an encoder code disc, which has the following beneficial effects:

[0013] The encoder code disc fixing device drives the blocking mechanism on the fixing block to move left and right by setting a driving mechanism, so that the left and right blocking mechanisms limit and fix the clamping disc, which is convenient for quick disassembly and assembly of the code disc body, and the installation accuracy of the code disc body is higher, so that the installation of the code disc body is more firm and stable, and it is not easy to cause damage to the code disc body, thereby extending the service life of the code disc body. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of the utility model;

[0015] Figure 2 It is a cross-sectional view of the rotating shaft of the utility model;

[0016] Figure 3 It is a right side view of the driving mechanism of the utility model;

[0017] Figure 4 It is the right view of the compression plate of the utility model.

[0018] In the figure: 1. rotating shaft; 2. encoder body; 3. clamping plate; 4. first limiting mechanism; 401. limiting block; 402. limiting groove; 5. rectangular groove; 6. sealing mechanism; 601. sealing plate; 602. locking bolt; 7. driving mechanism; 701. bearing assembly; 702. ball screw; 703. ball nut; 8. fixing block; 9. rectangular opening; 10. blocking mechanism; 101. mounting groove; 102. spring; 103. block; 11. second limiting mechanism; 12. elastic buckle; 13. hexagonal hole; 14. notch. DETAILED DESCRIPTION

[0019] 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.

[0020] See also Figure 1-Figure 4 The utility model discloses a fixing device for an encoder code disk, comprising a rotating shaft 1, a code disk body 2 is sleeved on the outer surface of the rotating shaft 1, a pressure plate 3 is sleeved on the rotating shaft 1 on the left and right sides of the code disk body 2, and a first limiting mechanism 4 is arranged between the pressure plate 3 and the code disk body 2, a rectangular groove 5 is opened on the right side of the rotating shaft 1, a sealing mechanism 6 is fixedly installed on the right side of the rotating shaft 1 corresponding to the rectangular groove 5, a driving mechanism 7 is installed between the left side of the sealing mechanism 6 and the left inner wall of the rectangular groove 5, a fixing block 8 is fixedly installed on the front and rear sides and the upper and lower sides of the driving mechanism 7, and a rectangular opening 9 is opened on the rotating shaft 1 corresponding to the fixing block 8, a blocking mechanism 10 is fixedly installed on the outer surface of the fixing block 8, and the left and right blocking mechanisms 10 press and fix the left and right pressure plates 3, and a second limiting mechanism 11 is arranged between the blocking mechanism 10 and the pressure plate 3.

[0021] Specifically, the first limiting mechanism 4 includes a limiting block 401 and a limiting groove 402. Four limiting blocks 401 are evenly arranged along the circumferential direction on the side of the clamping plate 3 facing the code disc main body 2. The limiting groove 402 is opened on the code disc main body 2 corresponding to the limiting block 401, and the limiting block 401 is inserted in the limiting groove 402. The second limiting mechanism 11 has the same structure as the first limiting mechanism 4.

[0022] In this embodiment, the limit block 401 is inserted into the limit groove 402 to limit the pressure plate 3 and the code plate body 2, and the code plate body 2 will not rotate at will. At the same time, the second limit mechanism 11 limits the blocking mechanism 10 and the pressure plate 3, so that the pressure plate 3 will not rotate along the rotating shaft 1.

[0023] Specifically, the sealing mechanism 6 includes a sealing plate 601 and a locking bolt 602 , and the sealing plate 601 is fixedly mounted on the right side of the rotating shaft 1 through the locking bolt 602 .

[0024] In this embodiment, the locking bolt 602 fixes the sealing plate 601 to the right side of the rotating shaft 1 , so that the sealing plate 601 seals the rectangular groove 5 and limits and fixes the driving mechanism 7 .

[0025] Specifically, the driving mechanism 7 includes a bearing assembly 701, a ball screw 702 and a ball nut 703. There are two bearing assemblies 701 on the left and right, and a ball screw 702 is mirrored between the left and right bearing assemblies 701. The facing surfaces of the ball screw 702 are fixedly connected. The ball screw 702 is fixedly installed with a ball nut 703, and the outer surface of the ball nut 703 is fixedly connected to the fixed block 8.

[0026] In this embodiment, the left and right ball screws 702 rotate in the left and right bearing assemblies 701, causing the left and right ball nuts 703 to move left and right on the ball screws 702, so that the left and right ball nuts 703 drive the left and right fixed blocks 8 to move toward each other. The outer surfaces of the bearing assemblies 701 and the ball nuts 703 are both rectangular structures, and are in contact with the inner walls of the rectangular grooves 5, so that the left and right movement process of the left and right ball nuts 703 is stable.

[0027] Specifically, the right side end of the ball screw 702 is movably inserted into the right side of the sealing plate 601, and the upper and lower sides of the ball screw 702 are fixedly installed with elastic buckles 12, which are buckled and fixed to the outer surface of the sealing plate 601, and the right side of the ball screw 702 is provided with a hexagonal hole 13.

[0028] In this embodiment, the elastic buckle 12 is buckled on the sealing plate 601 to prevent the ball screw 702 from rotating at will, and the hexagonal hole 13 is convenient for inserting a hexagonal wrench to drive the ball screw 702 to rotate.

[0029] Specifically, the blocking mechanism 10 includes a mounting groove 101, a spring 102 and a stopper 103. The outer surface of the fixed block 8 is provided with a mounting groove 101, a spring 102 is fixedly installed on the inner wall of the mounting groove 101, and a stopper 103 is fixedly installed on the end of the spring 102 facing outward, and the stopper 103 is in contact with the clamping plate 3.

[0030] In this embodiment, the installation groove 101 is used to install the spring 102 , and the spring 102 pushes the stopper 103 to leak out of the rectangular opening 9 , so that the stopper 103 blocks the side of the pressure plate 3 .

[0031] Specifically, a notch 14 is formed on the pressing plate 3 at a position corresponding to the stopper 103 .

[0032] In this embodiment, the notch 14 enables the pressure plate 3 to be removed from the rotating shaft 1 even when the stopper 103 is not compressed.

[0033] When in use, firstly, the left pressure plate 3 is movably sleeved on the rotating shaft 1, and the notch 14 on the pressure plate 3 prevents the pressure plate 3 from conflicting with the block 103. Then, the pressure plate 3 is rotated so that the left pressure plate 3 and the left block 103 are limited by the second limiting mechanism 11. Then, the code disc body 2 is movably sleeved on the rotating shaft 1, and the upper limiting groove 402 of the code disc body 2 prevents the code disc body 2 from conflicting with the block 103. The code disc body 2 is rotated so that it is sleeved on the limiting block 401 through the limiting groove 402 in the first limiting mechanism 4, so as to achieve the effect of limiting the code disc body 2. Similarly, the right pressure plate 3 is sleeved on the rotating shaft 1, so that the right pressure plate 3 and the right block 103 are fitted together, and the hexagonal wrench is inserted into the ball screw 70 in the driving mechanism 7. 2, the left and right ball screws 702 rotate in the left and right bearing assemblies 701, so that the left and right ball nuts 703 move left and right on the ball screws 702, so that the left and right ball nuts 703 drive the left and right fixing blocks 8 to move toward each other, and the left and right fixing blocks 8 drive the left and right stoppers 103 to move left and right toward each other, so that the left and right stoppers 103 drive the left and right pressing plates 3 to press and fix the left and right side surfaces of the code disc body 2, and at the same time, the elastic buckle 12 is buckled in the card groove on the right side of the sealing plate 601, so as to achieve the effect of fixing the code disc body 2, facilitate the rapid disassembly and assembly of the code disc body 2, and the installation accuracy of the code disc body 2 is higher, so that the installation of the code disc body 2 is more firm and stable, and it is not easy to cause damage to the code disc body 2, thereby extending the service life of the code disc body 2.

[0034] To sum up, the encoder code disc fixing device facilitates the quick disassembly and assembly of the code disc main body 2, and the installation accuracy of the code disc main body 2 is higher, making the installation of the code disc main body 2 more firm and stable, and not easy to cause damage to the code disc main body 2, thereby extending the service life of the code disc main body 2.

[0035] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A fixing device for an encoder code disc, comprising a rotating shaft (1), characterized in that: The outer surface of the rotating shaft (1) is sleeved with a code disc body (2), and a clamping disc (3) is sleeved on the rotating shaft (1) on the left and right sides of the code disc body (2), and a first limiting mechanism (4) is arranged between the clamping disc (3) and the code disc body (2). A rectangular groove (5) is provided on the right side of the rotating shaft (1), and a sealing mechanism (6) is fixedly installed on the right side of the rotating shaft (1) corresponding to the rectangular groove (5). A driving mechanism (7) is installed between the left side of the sealing mechanism (6) and the left inner wall of the rectangular groove (5). Fixed blocks (8) are fixedly installed on the front and rear sides and the upper and lower sides of the driving mechanism (7), and a rectangular opening (9) is provided on the rotating shaft (1) corresponding to the fixed block (8). A blocking mechanism (10) is fixedly installed on the outer surface of the fixed block (8), and the left and right blocking mechanisms (10) clamp and fix the left and right clamping discs (3), and a second limiting mechanism (11) is arranged between the blocking mechanism (10) and the clamping disc (3).

2. The fixing device for an encoder code disc according to claim 1, characterized in that: The first limiting mechanism (4) comprises a limiting block (401) and a limiting groove (402); four limiting blocks (401) are evenly arranged along the circumferential direction on the side of the pressure plate (3) facing the code plate body (2); a limiting groove (402) is provided on the code plate body (2) corresponding to the limiting block (401), and the limiting block (401) is inserted into the limiting groove (402); the second limiting mechanism (11) has the same structure as the first limiting mechanism (4).

3. The fixing device for an encoder code disc according to claim 1, characterized in that: The sealing mechanism (6) comprises a sealing plate (601) and a locking bolt (602); the sealing plate (601) is fixedly mounted on the right side of the rotating shaft (1) via the locking bolt (602).

4. The fixing device for an encoder code disc according to claim 1, characterized in that: The driving mechanism (7) comprises a bearing assembly (701), a ball screw (702) and a ball nut (703); two bearing assemblies (701) are arranged on the left and right, and a ball screw (702) is arranged in a mirror image between the left and right bearing assemblies (701); the facing surfaces of the ball screws (702) are fixedly connected; the ball screws (702) are fixedly mounted with ball nuts (703); and the outer surfaces of the ball nuts (703) are fixedly connected to the fixing blocks (8).

5. The fixing device for an encoder code disc according to claim 4, characterized in that: The right side end of the ball screw (702) is movably inserted into the right side of the sealing plate (601), and the upper and lower side surfaces of the ball screw (702) are fixedly mounted with elastic buckles (12), the elastic buckles (12) are buckled and fixed to the outer surface of the sealing plate (601), and the right side surface of the ball screw (702) is provided with a hexagonal hole (13).

6. The fixing device for an encoder code disc according to claim 1, characterized in that: The blocking mechanism (10) comprises a mounting groove (101), a spring (102) and a stopper (103); the outer surface of the fixed block (8) is provided with a mounting groove (101); a spring (102) is fixedly mounted on the inner wall of the mounting groove (101); a stopper (103) is fixedly mounted on the end of the spring (102) facing outward; and the stopper (103) is in contact with the pressure plate (3).

7. The fixing device for an encoder code disc according to claim 1, characterized in that: A notch (14) is provided on the pressing plate (3) at a position corresponding to the stopper (103).

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