Anti-loose motor commutator

Abstract

The utility model discloses a kind of anti-loosening motor commutator, belong to commutator technical field, including commutator body, the one end of commutator body is fixed with fixed sleeve, the inside of fixed sleeve is fixed with copper sleeve, fixed sleeve is provided with the shaft, the inner wall of copper sleeve is slidably connected with bushing, the side surface of bushing is fixed with anti-deviation guide block, the inside wall of copper sleeve is equipped with anti-deviation guide groove, the side surface of bushing is fixed with positioning insert block;The utility model is fixed by the bushing, anti-deviation guide block, anti-deviation guide groove and locking bolt being set, copper sleeve and bushing relative position can be realized, after installation, avoid displacement along the installation direction of shaft due to vibration, stress etc. It is directly and accurately aligned with the alignment hole and locking slot of positioning insert block after bushing and copper sleeve are guided into along anti-deviation guide groove using anti-deviation guide block, without subsequent manual hole searching and alignment, and assembly error can be reduced.

Description

Technical Field

[0001] This utility model relates to the field of commutator technology, specifically to an anti-loosening type motor commutator. Background Technology

[0002] As a core component of DC motors and AC series motors, the motor commutator undertakes the critical task of periodically changing the direction of current. Its performance directly determines whether the motor rotor armature can continuously obtain torque in the same direction, ensuring stable operation of the motor.

[0003] In existing motor commutators, the connection between the bushing and the copper sleeve is mostly a simple interference fit positioning structure. During high-speed operation of the motor, the centrifugal force and torque generated by the shaft can easily cause relative slippage between the bushing and the copper sleeve, leading to a decrease in commutator performance or even failure. In addition, due to the smooth outer surface of the bushing, the bonding force between it and the copper sleeve is insufficient, which cannot effectively resist the vibration and impact under complex working conditions (uneven force between the bushing and the copper sleeve caused by shaft vibration). This makes it difficult to meet the application requirements of modern industry for high reliability and long service life of motors. Therefore, an anti-loosening motor commutator is needed to solve the problems existing in the current technology. Utility Model Content

[0004] The purpose of this invention is to provide an anti-loosening motor commutator to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an anti-loosening motor commutator, comprising a commutator body, a fixing sleeve fixed to one end of the commutator body, a copper sleeve fixed inside the fixing sleeve, a rotating shaft passing through the fixing sleeve, a bushing slidably connected to the inner wall of the copper sleeve, an anti-deviation guide block fixed to the side surface of the bushing, an anti-deviation guide groove formed on the inner side wall of the copper sleeve, a positioning insert fixed to the side surface of the bushing, a positioning groove formed on the inner side wall of the copper sleeve, and a locking bolt passing through the inside of the positioning insert.

[0006] Preferably, a sliding column is fixed on the inner end wall where the anti-deviation guide groove is located, and a sliding hole is opened through one end face of the anti-deviation guide block.

[0007] Preferably, the anti-deviation guide block is slidably connected in the anti-deviation guide groove of the copper sleeve, and the sliding column is slidably adapted to the sliding hole of the anti-deviation guide block.

[0008] Preferably, one end face of the positioning insert is provided with an alignment hole, and the inner end wall of the positioning slot is provided with a locking screw groove, and the alignment hole is aligned with the locking screw groove hole.

[0009] Preferably, the locking bolt passes through the alignment hole and is threaded into the locking bolt groove.

[0010] Preferably, the rotating shaft is rotatably connected inside the bushing.

[0011] This utility model provides an anti-loosening type motor commutator, which has the following advantages compared with the prior art:

[0012] Beneficial effects:

[0013] By using bushings, anti-deviation guide blocks, anti-deviation guide grooves, and locking bolts, the relative positions of the copper sleeve and bushing can be fixed, preventing displacement along the installation direction of the shaft due to vibration or force after installation. Furthermore, after the bushing and copper sleeve are guided into the anti-deviation guide groove by the anti-deviation guide blocks, the alignment holes of the positioning inserts and the locking screw grooves can be directly and accurately aligned, eliminating the need for subsequent manual hole finding and alignment, and reducing assembly errors.

[0014] By setting anti-deviation guide blocks and positioning inserts, the anti-deviation guide blocks and positioning inserts on the side surface of the bushing extend into the groove of the inner wall of the copper bushing. This can improve the situation where the outer surface of the traditional bushing is too smooth, resulting in insufficient bonding force with the copper bushing. This prevents the bushing from being subjected to centrifugal force and torque when the shaft rotates at high speed, which would cause it to slide relative to the copper bushing. Attached Figure Description

[0015] Figure 1 This is a perspective view of the overall structure of this utility model;

[0016] Figure 2 This is a perspective view of the bushing structure of this utility model;

[0017] Figure 3 This is a perspective view of the anti-deviation guide groove structure of this utility model;

[0018] Figure 4 This is a three-dimensional view of the sliding column structure of this utility model.

[0019] In the diagram: 1. Commutator body; 2. Fixing sleeve; 3. Copper sleeve; 4. Rotating shaft; 5. Bushing; 6. Anti-deviation guide block; 7. Positioning insert; 8. Locking bolt; 9. Positioning groove; 10. Locking screw groove; 11. Sliding hole; 12. Anti-deviation guide groove; 13. Sliding column. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Please see Figure 1-4This utility model provides an anti-loosening type motor commutator, including a commutator body 1, a fixing sleeve 2 fixed to one end of the commutator body 1, a copper sleeve 3 fixed inside the fixing sleeve 2, a rotating shaft 4 passing through the fixing sleeve 2, a bushing 5 slidably connected to the inner wall of the copper sleeve 3, an anti-deviation guide block 6 fixed to the side surface of the bushing 5, an anti-deviation guide groove 12 formed on the inner side wall of the copper sleeve 3, a positioning insert 7 fixed to the side surface of the bushing 5, a positioning groove 9 formed on the inner side wall of the copper sleeve 3, and a locking bolt passing through the interior of the positioning insert 7. 8; Align the anti-deviation guide block 6 of bushing 5 with the anti-deviation guide groove 12 of copper sleeve 3, so that the sliding hole 11 of anti-deviation guide block 6 corresponds to the position of the sliding post 13 on the inner end wall of anti-deviation guide groove 12. Slide bushing 5 along anti-deviation guide groove 12. The sliding fit between sliding post 13 and sliding hole 11 achieves precise guidance. When bushing 5 slides to the end, positioning insert 7 automatically embeds into positioning groove 9 of copper sleeve 3. At this time, the alignment hole of positioning insert 7 is precisely aligned with the locking screw groove 10 on the inner end wall of positioning groove 9. There is no need for manual hole finding and alignment, reducing assembly errors.

[0022] Further as Figure 1 , Figure 2 and Figure 3 As shown, it is worth noting that a sliding column 13 is fixed on the inner end wall of the anti-deviation guide groove 12, and a sliding hole 11 is opened through one end face of the anti-deviation guide block 6. The anti-deviation guide block 6 is slidably connected in the anti-deviation guide groove 12 of the copper sleeve 3. The sliding column 13 and the sliding hole 11 of the anti-deviation guide block 6 are slidably adapted. An alignment hole is opened on one end face of the positioning insert 7, and a locking screw groove 10 is opened on the inner end wall of the positioning insert groove 9. The alignment hole and the locking screw groove 10 are aligned. The locking bolt 8 passes through the alignment hole and is threaded into the locking screw groove 10. The locking bolt 8 is passed through the alignment hole of the positioning insert 7 and screwed into the locking screw groove 10 of the copper sleeve 3. The locking bolt 8 is tightened to fix the relative position of the copper sleeve 3 and the bushing 5, and to prevent displacement along the installation direction of the rotating shaft 4 due to vibration, force, etc. after installation.

[0023] Further as Figure 1 As shown, it is worth noting that the rotating shaft 4 is rotatably connected inside the bushing 5. The rotating shaft 4 passes through the inside of the bushing 5 and is connected to the motor rotor. When the motor is running, the anti-deviation guide block 6 and the positioning insert 7 on the side surface of the bushing 5 are embedded in the groove of the inner wall of the copper sleeve 3, which increases the bonding force between the two and effectively resists the centrifugal force and torque generated when the rotating shaft 4 rotates at high speed, prevents the bushing 5 and the copper sleeve 3 from sliding relative to each other, and ensures the stable operation of the motor commutator.

[0024] The solution has the following working process: The motor commutator is the core component of DC motors and AC series motors. Its core function is to realize the periodic conversion of the current direction, so as to ensure that the motor rotor armature can continuously obtain the same torque, thereby maintaining stable rotation. The rotating shaft 4 on the motor rotor passes through the rotor core and the center of the commutator.

[0025] When bushing 5 and copper sleeve 3 are installed, bushing 5 slides into the end of copper sleeve 3 along anti-deviation guide groove 12 via anti-deviation guide block 6 on the side surface. At this time, positioning insert 7 can be positioned and embedded in positioning groove 9 of copper sleeve 3. At this time, the alignment hole of positioning insert 7 is aligned with the locking screw groove 10 on the wall of positioning groove 9. Then, locking bolt 8 is threaded into locking screw groove 10 of copper sleeve 3 after passing through the alignment hole of positioning insert 7. This can fix the relative position of copper sleeve 3 and bushing 5, and avoid displacement along the installation direction of rotating shaft 4 due to vibration, force, etc. after installation. In addition, after bushing 5 and copper sleeve 3 are guided into the anti-deviation guide groove 12 by anti-deviation guide block 6, the alignment hole of positioning insert 7 and locking screw groove 10 can be directly and accurately aligned without subsequent manual hole finding and hole alignment, which can reduce assembly error.

[0026] During use, the anti-deviation guide block 6 and the positioning insert 7 on the side surface of the bushing 5 extend into the groove of the inner wall of the copper sleeve 3. This can improve the situation where the outer surface of the traditional bushing 5 is too smooth, resulting in insufficient bonding force with the copper sleeve 3. This prevents the bushing 5 from being subjected to centrifugal force and torque when the shaft 4 rotates at high speed, which would cause it to slide relative to the copper sleeve 3.

[0027] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Although embodiments of this utility model have been shown and described, this does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the description and drawings of this utility model, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model. Regarding the embodiments of this utility model, those skilled in the art will understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of this utility model. The scope of this utility model is defined by the appended claims and their equivalents.

Claims

1. A type of anti-loosening motor commutator, comprising a commutator body (1), wherein a fixing sleeve (2) is fixed to one end of the commutator body (1), a copper sleeve (3) is fixed inside the fixing sleeve (2), and a rotating shaft (4) passes through the fixing sleeve (2), characterized in that: The inner wall of the copper sleeve (3) is slidably connected to a bushing (5). An anti-deviation guide block (6) is fixed on the side surface of the bushing (5). An anti-deviation guide groove (12) is opened on the inner side wall of the copper sleeve (3). A positioning insert (7) is fixed on the side surface of the bushing (5). A positioning groove (9) is opened on the inner side wall of the copper sleeve (3). A locking bolt (8) is inserted inside the positioning insert (7).

2. The anti-loosening type motor commutator according to claim 1, characterized in that: A sliding column (13) is fixed on the inner end wall of the anti-deviation guide groove (12), and a sliding hole (11) is opened through one end face of the anti-deviation guide block (6).

3. The anti-loosening type motor commutator according to claim 2, characterized in that: The anti-deviation guide block (6) is slidably connected in the anti-deviation guide groove (12) of the copper sleeve (3), and the sliding column (13) is slidably adapted to the sliding hole (11) of the anti-deviation guide block (6).

4. The anti-loosening type motor commutator according to claim 1, characterized in that: One end face of the positioning insert (7) is provided with an alignment hole, and the inner end wall of the positioning groove (9) is provided with a locking screw groove (10), and the alignment hole is aligned with the hole of the locking screw groove (10).

5. The anti-loosening type motor commutator according to claim 4, characterized in that: The locking bolt (8) passes through the alignment hole and is threaded into the locking screw groove (10).

6. The anti-loosening type motor commutator according to claim 1, characterized in that: The rotating shaft (4) is rotatably connected inside the bushing (5).

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