Novel electric tool rotor balance structure

Abstract

The utility model relates to the technical field of electric tool rotor balancing, and discloses a novel electric tool rotor balancing structure, which comprises an iron core and a rotating shaft, a coil is wound outside the iron core, a clamping block is fixed on the side edge of a connecting sleeve, a semi-arc plate is clamped in the connecting sleeve, a supporting hook is fixed outside the semi-arc plate, and the supporting hook is fixed on the rotating shaft. And a bent groove is formed in the supporting hook. The first balancing weight is fixed to the left side of the iron core, the second balancing weight is fixed to the right side of the iron core, the iron core is provided with the three fan-shaped block bodies, and the styles of the first balancing weight and the second balancing weight are matched with the fan-shaped block bodies. Therefore, the first balancing weight and the second balancing weight can be used for balancing in the working process, so that when the iron core, the rotating shaft and the like are combined and matched for use, the rotor can be balanced through the first balancing weight and the second balancing weight during working, the balancing of the first balancing weight and the second balancing weight needs to be carried out according to the distributed gravity center position, and the balancing capacity is improved.

Description

Technical Field

[0001] This utility model relates to the field of power tool rotor balancing technology, specifically a novel power tool rotor balancing structure. Background Technology

[0002] Power tools typically consist of an electric motor or electromagnet, a power supply, a plug or battery, a transmission mechanism, and a working head. They replace manual labor with electric power, significantly improving work efficiency and reducing labor intensity. Their core characteristic is mechanized operation. Examples of typical power tools include electric drills, electric saws, and angle grinders. Newer types of power tools, through optimized design, enhance operational safety and comfort and are widely used in construction, decoration, and automotive repair, meeting the needs of various scenarios.

[0003] In conjunction with the application of new power tools, an indispensable component for their operation is the rotor. The rotor is the core rotating component in power machinery and working machinery. Specifically, it refers to the rotating body supported by bearings that realizes energy conversion. It is the part that realizes the mutual conversion of electrical energy and mechanical energy through rotation. It usually works in conjunction with the stationary stator. During the rotation process, the rotor sometimes rotates at high speed. An unbalanced rotor will generate centrifugal force when rotating. This force will be transmitted to the entire machine through the bearings, causing vibration and wear of the machine and affecting its service life. Utility Model Content

[0004] The purpose of this utility model is to provide a novel rotor balancing structure for power tools, in order to solve the problem mentioned in the background art that an unbalanced rotor will generate centrifugal force when rotating, and this force will be transmitted to the entire machine through the bearings, causing machine vibration and wear, and affecting service life.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a novel rotor balancing structure for power tools, comprising an iron core and a rotating shaft. A coil is wound around the outside of the iron core. A first counterweight is fixed to the left side of the iron core, and a second counterweight is fixed to the right side of the iron core. An installation sleeve is fitted around the outside of the side of the rotating shaft, and a connecting sleeve is fitted around the outside of the installation sleeve. A locking block is fixed to the side of the connecting sleeve, and a semi-arc plate is locked inside the connecting sleeve. A support hook is fixed to the outside of the semi-arc plate, and a bending groove is formed in the support hook.

[0006] As a further technical solution of this utility model, the iron core is provided with three fan-shaped blocks, and the styles of the first counterweight and the second counterweight are adapted to each other with the fan-shaped blocks.

[0007] As a further technical solution of this utility model, the first counterweight is distributed in three groups in a ring about the central axis of the rotating shaft, and the second counterweight is distributed in a ring about the central axis of the rotating shaft.

[0008] As a further technical solution of this utility model, the locking block is plastically fixed on the side of the connecting sleeve, and the locking block is distributed in a ring about the center of the connecting sleeve.

[0009] As a further technical solution of this utility model, a through hole for inserting a rotating shaft is opened inside the iron core, and a groove is opened on the outer wall of the through hole.

[0010] As a further technical solution of this utility model, the groove is distributed in a ring around the center of the through hole, and the cross-section of the groove is rectangular.

[0011] As a further technical solution of this utility model, the semi-arc plate is locked in the locking block, and the semi-arc plate is distributed in three groups in a ring about the center of the rotation axis.

[0012] As a further technical solution of this utility model, the support hooks are distributed in three groups around the center of the rotating shaft, and the arc shape of the bending groove is adapted to the cross-sectional diameter of the coil.

[0013] Compared with the prior art, the beneficial effects of this utility model are: this new type of power tool rotor balancing structure not only improves the balancing ability, but also improves the locking ability and coil support ability of the power tool rotor balancing structure.

[0014] A first counterweight is fixed to the left side of the iron core, and a second counterweight is fixed to the right side of the iron core. The iron core is also equipped with three fan-shaped blocks. The first and second counterweights are designed to match the fan-shaped blocks. Therefore, the first and second counterweights can be used for balancing during operation. When the iron core, shaft, and other components are used together, the rotor can be balanced by the first and second counterweights. The balance of the two counterweights needs to be determined based on the distribution of the center of gravity, thus improving the balancing ability.

[0015] By making a hole in the iron core and having the rotating shaft pass through the hole, a mounting sleeve is fitted onto the outside of the rotating shaft on the left side of the iron core, and a connecting sleeve is fitted and fixed on the outside of the mounting sleeve. The side of the connecting sleeve is fixed with a locking block, so the locking block is distributed in a ring. In this way, the locking block can lock and fix the position of the semi-arc plate, thereby improving the overall locking ability during operation.

[0016] The semi-arc plate is engaged with the internal position between the locking blocks, and three semi-arc plates are distributed in a ring. Support hooks are fixed on the outside of the three semi-arc plates, and curved grooves are formed on the support hooks. Therefore, after the coil is wound, the coil can be limited and supported by the position of the curved grooves, thereby improving the overall coil support capacity during operation. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the structure from the left side of this utility model;

[0019] Figure 3 This is a schematic diagram of the structure from the right side view of this utility model;

[0020] Figure 4 This is a front view structural diagram of the support hook of this utility model.

[0021] In the diagram: 1. Iron core; 2. Coil; 3. Shaft; 4. Clamping block; 5. Semi-arc plate; 6. Connecting sleeve; 7. Mounting sleeve; 8. First counterweight; 9. Second counterweight; 10. Groove; 11. Support hook; 12. Bending groove. Detailed Implementation

[0022] 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.

[0023] Please see Figure 1-4 The present invention provides an embodiment of a novel electric tool rotor balancing structure, comprising an iron core 1 and a rotating shaft 3. A coil 2 is wound around the outside of the iron core 1. A first counterweight 8 is fixed on the left side of the iron core 1, and a second counterweight 9 is fixed on the right side of the iron core 1. An installation sleeve 7 is sleeved on the outside of the side of the rotating shaft 3. A connecting sleeve 6 is sleeved on the outside of the installation sleeve 7. A locking block 4 is fixed on the side of the connecting sleeve 6. A semi-arc plate 5 is locked inside the connecting sleeve 6. A support hook 11 is fixed on the outside of the semi-arc plate 5. A bending groove 12 is formed in the support hook 11.

[0024] The iron core 1 is equipped with three fan-shaped blocks, and the first counterweight 8 and the second counterweight 9 are adapted to each other in style.

[0025] The first counterweight 8 is distributed in three groups in a ring about the central axis of the rotating shaft 3, and the second counterweight 9 is distributed in a ring about the central axis of the rotating shaft 3.

[0026] The locking block 4 is plastically fixed on the side of the connecting sleeve 6, and the locking block 4 is distributed in a ring about the center of the connecting sleeve 6.

[0027] The core 1 has a through hole for the shaft 3 to be inserted, and the outer wall of the through hole is connected to a groove 10.

[0028] The groove 10 is arranged in a ring around the center of the through hole, and the cross-section of the groove 10 is rectangular.

[0029] The semi-arc plate 5 is locked in the locking block 4, and the semi-arc plate 5 is distributed in three groups in a ring about the center of the rotation axis 3.

[0030] The support hooks 11 are distributed in three groups in a ring around the center of the rotating shaft 3, and the arc shape of the bending groove 12 is adapted to the cross-sectional diameter of the coil 2.

[0031] The coil 2 is then wound normally around the position of the iron core 1, and the winding position is the middle connection position between the iron core 1 and the fan-shaped block;

[0032] Further, the counterweights of the two need to be tested and balanced according to the position of the center of gravity of the distribution, so that the weights of the multiple first counterweights 8 and second counterweights 9 can be the same or different.

[0033] Working principle: First, a hole is made in the iron core 1 during operation, and the rotating shaft 3 passes through the hole. The mounting sleeve 7 is sleeved on the outside of the rotating shaft 3 on the left side of the iron core 1, and the connecting sleeve 6 is fixed on the outside of the mounting sleeve 7. The side of the connecting sleeve 6 is fixed with the locking block 4. Therefore, the locking block 4 is distributed in a ring. The locking block 4 can lock and fix the position of the semi-arc plate 5. The support hook 11 is fixed on the outside of the three semi-arc plates 5, and the curved groove 12 is formed on the support hook 11. Therefore, after the coil 2 is wound, the coil 2 can be limited and supported by the position of the curved groove 12. The first counterweight 8 and the second counterweight 9 are pre-assembled and balanced by the first counterweight 8 and the second counterweight 9. The counterweight of the two needs to be tested and balanced according to the distribution of the center of gravity.

[0034] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

Claims

1. A novel rotor balancing structure for power tools, comprising an iron core (1) and a rotating shaft (3), characterized in that: The iron core (1) is wound with a coil (2), a first counterweight (8) is fixed on the left side of the iron core (1), a second counterweight (9) is fixed on the right side of the iron core (1), an installation sleeve (7) is sleeved on the outside of the side of the rotating shaft (3), a connecting sleeve (6) is sleeved on the outside of the installation sleeve (7), a locking block (4) is fixed on the side of the connecting sleeve (6), a semi-arc plate (5) is locked inside the connecting sleeve (6), a support hook (11) is fixed on the outside of the semi-arc plate (5), and a bending groove (12) is formed in the support hook (11).

2. The novel power tool rotor balancing structure according to claim 1, characterized in that: The iron core (1) is provided with three fan-shaped blocks, and the styles of the first counterweight (8) and the second counterweight (9) are adapted to each other.

3. The novel power tool rotor balancing structure according to claim 1, characterized in that: The first counterweight (8) is distributed in three groups in a ring about the central axis of the rotating shaft (3), and the second counterweight (9) is distributed in a ring about the central axis of the rotating shaft (3).

4. The novel power tool rotor balancing structure according to claim 1, characterized in that: The locking block (4) is plastically fixed on the side of the connecting sleeve (6), and the locking block (4) is distributed in a ring about the center of the connecting sleeve (6).

5. The novel power tool rotor balancing structure according to claim 1, characterized in that: The iron core (1) has a through hole for the insertion of the shaft (3) inside, and the outer wall of the through hole is connected to a groove (10).

6. A novel power tool rotor balancing structure according to claim 5, characterized in that: The groove (10) is distributed in a ring around the center of the through hole, and the cross section of the groove (10) is rectangular.

7. The novel power tool rotor balancing structure according to claim 1, characterized in that: The semi-arc plate (5) is locked in the locking block (4), and the semi-arc plate (5) is distributed in three groups in a ring about the center of the rotating shaft (3).

8. The novel power tool rotor balancing structure according to claim 1, characterized in that: The support hooks (11) are distributed in three groups around the center of the rotating shaft (3), and the arc shape of the bending groove (12) is adapted to the cross-sectional diameter of the coil (2).

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