A motor and reciprocating polishing device

Abstract

The utility model provides a kind of motor and reciprocating polishing device, motor includes: main body, the main body has first linear output end and second linear output end, the vibration direction of the first linear output end and the second linear output end is opposite;Quick-release mounting portion, the quick-release mounting portion is used to be detachably assembled with polishing rod, the quick-release mounting portion is set in the first linear output end, counterweight, the counterweight is set in the second linear output end.Relative to prior art, the motor of the utility model adopts two linear output ends that can realize opposite vibration, the first linear output end drives polishing rod to realize polishing, while, using the counterweight of second linear output end carries out opposite movement, to facilitate offset and reduce vibration, and since it is using reciprocating vibration to realize polishing action, it does not need any intermediate transmission mechanism transmission, transmission efficiency is higher, realizes faster, more stable, more accurate polishing.

Description

Technical Field

[0001] This utility model relates to the field of polishing technology, specifically to a motor and a reciprocating polishing device. Background Technology

[0002] Electric polishing and grinding machines are widely used for grinding and polishing in manual work. Currently, there are two common types: 1. Rotary electric grinders and 2. Reciprocating electric grinders. Traditional electric grinders, whether rotary or reciprocating, are driven by a rotary electric motor.

[0003] However, the vibration is quite noticeable when the rotary electric motor drives the grinding structure, resulting in a poor user experience. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings and deficiencies in the prior art and to provide a motor and a reciprocating grinding device.

[0005] One embodiment of this utility model provides a motor, comprising: The main body has a first linear output terminal and a second linear output terminal, and the vibration directions of the first linear output terminal and the second linear output terminal are opposite. A quick-release mounting part is provided for detachable assembly with a grinding rod, and the quick-release mounting part is located at the first linear output end. A counterweight is disposed at the second linear output terminal.

[0006] In some alternative embodiments, the quick-release mounting portion is provided with a mounting base, which is arranged on one side of the first linear output terminal.

[0007] In some optional embodiments, the mounting base is provided with a mounting hole, and a rotation limiting groove is provided on one side of the mounting hole. The rotation limiting groove extends circumferentially along the mounting hole, and an avoidance notch is provided on the side of the rotation limiting groove away from the main body.

[0008] In some alternative embodiments, the rotary limiting groove is provided with a slot for engaging with the limiting protrusion of the grinding rod.

[0009] In some alternative embodiments, the quick-release mounting portion includes a base portion, a mounting base, and a bending connector. The base portion is assembled with the first linear output terminal, and the mounting base is arranged on one side of the main body and connected to the base portion via the bending connector.

[0010] In some alternative embodiments, the counterweight is provided with a counterweight portion located on the side of the counterweight away from the mounting base and extending in a direction away from the mounting base.

[0011] In some alternative implementations, the quick-release mounting part is detachably connected to the first linear output terminal via a snap-fit ​​structure or a threaded structure.

[0012] In some alternative implementations, the counterweight is detachably connected to the second linear output terminal via a snap-fit ​​or threaded structure.

[0013] In some optional embodiments, the main body includes a base, a first vibration frame, a second vibration frame, a coil portion, a first magnet, and a second magnet. The first vibration frame and the second vibration frame are disposed on the base. A first linear output terminal is formed on the first vibration frame, and a second linear output terminal is formed on the second vibration frame. The coil portion is disposed on the base. The first magnet is disposed on the first vibration frame, and the second magnet is disposed on the second vibration frame. The first magnet and the second magnet are arranged side by side, and the arrangement directions of the N pole and S pole of the first magnet are opposite to the arrangement directions of the N pole and S pole of the second magnet.

[0014] Another embodiment of the present invention provides a reciprocating grinding device, comprising: a housing, a grinding rod, and a motor as described above; The main body of the motor is housed within the casing; The grinding rod is detachably connected to the quick-release mounting part; The housing has a cavity, a movable hole is provided on one side of the cavity, a waterproof structure is provided in the movable hole, and an elastic protrusion is provided on the inner side of the waterproof structure. The main body is disposed in the accommodating cavity, the quick-release mounting part extends from the movable hole to the outside of the accommodating cavity, the elastic protrusion is arranged around the quick-release mounting part, and the elastic protrusion abuts against the outer side of the quick-release mounting part; The housing includes an inner shell and an outer shell, the outer shell covering the outside of the inner shell, the inner shell and the outer shell surrounding each other to form the receiving cavity, the movable hole being formed on the inner shell, the main body being disposed within the receiving cavity, and a portion of the waterproof structure being disposed between the inner shell and the outer shell; The inner shell is provided with multiple positioning buckles, and the waterproof structure is provided with multiple positioning grooves, with the positioning buckles corresponding to and engaging with the positioning grooves.

[0015] Compared with the prior art, the motor of this utility model adopts two linear output ends that can achieve opposite vibrations. While the first linear output end drives the grinding rod to perform grinding, the counterweight of the second linear output end performs the opposite movement, which helps to cancel and reduce vibration. Moreover, since the grinding action is achieved by reciprocating vibration, no intermediate conversion mechanism is required for transmission, resulting in higher transmission efficiency and faster, more stable and more accurate grinding.

[0016] To provide a clearer understanding of this invention, the specific embodiments of this invention will be described below in conjunction with the accompanying drawings. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of a motor according to an embodiment of the present invention; Figure 2 This is a schematic diagram of the structure of the motor and grinding rod according to one embodiment of the present invention; Figure 3 This is a schematic diagram of the structure of the quick-release mounting part according to an embodiment of the present invention; Figure 4 This is an exploded view of a motor according to an embodiment of the present invention; Figure 5 This is a schematic diagram of the main body of one embodiment of the present utility model; Figure 6 This is an exploded view of the main body of one embodiment of the present utility model; Figure 7 This is a schematic diagram of the reciprocating grinding device according to an embodiment of the present invention; Figure 8 This is a cross-sectional view of a reciprocating grinding device according to an embodiment of the present invention; Figure 9 for Figure 8 The enlarged view at point A is shown below; Figure 10 This is a schematic diagram of a waterproof structure according to an embodiment of the present invention; Figure 11 This is an exploded view of a reciprocating grinding device according to an embodiment of the present invention.

[0018] Explanation of reference numerals in the attached figures: 10. Main body; 11. First linear output terminal; 12. Second linear output terminal; 13. Base; 14. First vibration frame; 141. Slot; 15. Second vibration frame; 16. Coil section; 17. First magnet; 18. Second magnet; 20. Quick-release mounting section; 21. Mounting base; 22. Mounting hole; 23. Rotation limiting groove; 24. Clearance notch; 25. Slot; 26. Base section; 27. Bending connecting seat; 30. Counterweight; 31. Counterweight section; 40. Grinding rod; 41. Limiting protrusion; 50. Housing; 51. Receiving cavity; 52. Movable hole; 53. Waterproof structure; 531. Elastic protrusion; 532. Positioning groove; 54. Inner shell; 541. Positioning buckle; 55. Outer shell; 60. Battery; 61. Circuit board. Detailed Implementation

[0019] The technical solutions of the present invention will now be clearly and completely described with reference to the accompanying drawings of the embodiments thereof. Please refer to... Figure 1 One embodiment of this utility model provides a motor, comprising: The main body 10 has a first linear output terminal 11 and a second linear output terminal 12, wherein the vibration directions of the first linear output terminal 11 and the second linear output terminal 12 are opposite. A quick-release mounting part 20 is provided for detachable assembly with the grinding rod 40, and the quick-release mounting part 20 is disposed at the first linear output end 11. The counterweight 30 is disposed at the second linear output terminal 12.

[0020] The working principle of the motor according to one embodiment of this utility model is explained below: Please see Figure 2 When the motor is running, the first linear output end 11 drives the quick-release mounting part 20 to reciprocate, which in turn drives the grinding rod 40 connected to the quick-release mounting part 20 to reciprocate, achieving the effect of grinding and polishing. If only the first linear output end 11 vibrates, the main body 10 will also vibrate due to the movement of the grinding rod 40 and the quick-release mounting part 20. Therefore, by adding the second linear output end 12, the second linear output end 12 will also drive the counterweight 30 to reciprocate. Since the first linear output end 11 and the second linear output end 12 vibrate in opposite directions, the counterweight 30 can be used to counteract the vibration of the main body 10 caused by the movement of the grinding rod 40 and the quick-release mounting part 20, thereby reducing the vibration generated when the entire motor is running. The main body 10 is usually installed inside the housing of the grinding device, so the vibration transmitted to the housing can be reduced.

[0021] The weight of the counterweight 30 can be designed based on the weight of the quick-release mounting part 20 and the grinding rod 40. Specifically, the weight of the counterweight 30 should be approximately the same as the sum of the weights of the quick-release mounting part 20 and the grinding rod 40. This helps to balance the vibration generated by the grinding rod 40 and the quick-release mounting part 20 with the vibration generated by the counterweight 30, thereby more effectively reducing the vibration generated during the operation of the entire motor.

[0022] Please see Figure 3 and Figure 4 In order to facilitate the installation of the grinding rod 40, in some optional embodiments, the quick-release mounting part 20 is provided with a mounting base 21, which is arranged on one side of the first linear output end 11.

[0023] In some optional embodiments, the mounting base 21 is provided with a mounting hole 22, and a rotation limiting groove 23 is provided on one side of the mounting hole 22. The rotation limiting groove 23 extends circumferentially along the mounting hole 22. A clearance notch 24 is provided on the side of the rotation limiting groove 23 away from the main body 10. A limiting protrusion 41 is typically provided on the side of the grinding rod 40. When the grinding rod 40 is inserted into the mounting hole 22, the limiting protrusion 41 extends from the clearance notch 24 into the rotation limiting groove 23. The grinding rod 40 is rotated at a certain angle, causing the limiting protrusion 41 to move away from the clearance notch 24 by rotating the limiting groove 23. This restricts the axial movement of the limiting protrusion 41 relative to the mounting hole 22. The vibration output direction of the first linear output end 11 is parallel to the axis of the mounting hole 22. Therefore, when the grinding rod 40 vibrates, the limiting groove 23 stably restricts the limiting protrusion 41 from disengaging from the limiting groove 23, thus stably limiting the position of the grinding rod 40. For disassembly, the grinding rod 40 is rotated to move the limiting protrusion 41 to the position corresponding to the clearance notch 24, allowing the limiting protrusion 41 to pass through the clearance notch 24. The grinding rod 40 can then be removed from the mounting hole 22 for quick disassembly and assembly, facilitating user disassembly, storage, or replacement of different grinding rods 40.

[0024] In some optional embodiments, the rotation limiting groove 23 is provided with a slot 25 for engaging with the limiting protrusion 41 of the grinding rod 40. The slot 25 further restricts the position of the limiting protrusion 41, thereby preventing the grinding rod 40 from rotating relative to the mounting hole 22. When disassembling, a certain force needs to be applied to make the limiting protrusion 41 disengage from the slot 25.

[0025] The specific structure of the quick-release mounting part 20 can be designed according to actual needs. For example, in some optional embodiments, the quick-release mounting part 20 includes a base part 26, a mounting base 21, and a bending connecting seat 27. The base part 26 is assembled with the first linear output terminal 11. The mounting base 21 is arranged on one side of the main body 10 and connected to the base part 26 through the bending connecting seat 27. The design of the bending connecting seat 27 facilitates placing the base part 26 and the mounting base 21 on adjacent sides of the main body 10, thereby facilitating the placement of the mounting base 21 in a suitable position. In this embodiment, the base part 26 is detachably connected to the first linear output terminal 11.

[0026] In some optional embodiments, the counterweight 30 is provided with a counterweight portion 31, which is located on the side of the counterweight 30 away from the mounting base 21 and extends in a direction away from the mounting base 21. The counterweight portion 31 adaptively increases the weight of the counterweight 30, making the overall weight of the counterweight 30 match that of the grinding rod 40 and the quick-release mounting portion 20. In addition, the extension direction of the counterweight portion 31 is opposite to the direction of the mounting base 21, which helps to balance the overall center of gravity of the motor, improves stability, and reduces vibration during motor operation.

[0027] In some alternative embodiments, the quick-release mounting part 20 is detachably connected to the first linear output terminal 11 via a snap-fit ​​structure or a threaded structure, thereby facilitating production assembly. In this embodiment, the quick-release mounting part 20 is secured to the first linear output terminal 11 by multiple screws.

[0028] In some alternative embodiments, the counterweight 30 is detachably connected to the second linear output end 12 via a snap-fit ​​structure or a threaded structure, thereby facilitating production assembly and allowing the counterweight 30 to be adaptively replaced according to the weight of the grinding rod 40 and the quick-release mounting part 20, so that the weight of the counterweight 30 matches the sum of the weights of the grinding rod 40 and the quick-release mounting part 20.

[0029] Please see Figure 5 and Figure 6In some optional embodiments, the main body 10 includes a base 13, a first vibration frame 14, a second vibration frame 15, a coil portion 16, a first magnet 17, and a second magnet 18. The first vibration frame 14 and the second vibration frame 15 are disposed on the base 13. A first linear output terminal 11 is formed on the first vibration frame 14, and a second linear output terminal 12 is formed on the second vibration frame 15. The coil portion 16 is disposed on the base 13. The first magnet 17 is disposed on the first vibration frame 14, and the second magnet 18 is disposed on the second vibration frame 15. The first magnet 17 and the second magnet 18 are arranged side by side, and the N and S poles of the first magnet 17 are arranged in the same direction as the second magnet 18. The N and S poles of the first magnet 17 are arranged in opposite directions. That is, in the preset direction, the N and S poles of the first magnet 17 are arranged in sequence, and the S and N poles of the second magnet 18 are arranged in sequence. When the coil section 16 is energized, the first magnet 17 moves in the preset direction due to magnetic force, and the second magnet 18 moves in the opposite direction due to magnetic force. The first magnet 17 moves in the opposite direction due to magnetic force, and the second magnet 18 moves in the preset direction due to magnetic force. This makes the vibration directions of the first magnet 17 and the second magnet 18 opposite. The first magnet 17 drives the first vibration frame 14 to vibrate, thereby driving the quick-release mounting part 20 to vibrate. The second magnet 18 drives the second vibration frame 15 to vibrate, thereby driving the counterweight 30 to vibrate. In this embodiment, both the first vibration frame 14 and the second vibration frame 15 are provided with slots 141. The first magnet 17 is inserted into the slot 141 of the first vibration frame 14, and then screws are passed through the quick-release mounting part 20, the first vibration frame 14 and the first magnet 17. The second magnet 18 is inserted into the slot 141 of the second vibration frame 15, and then screws are passed through the counterweight 30, the second vibration frame 15 and the second magnet 18.

[0030] Please see Figures 7 to 11 The motor described above can be used in a reciprocating grinding device, which includes a housing 50, a grinding rod 40, and a motor as described above.

[0031] The main body 10 is disposed inside the housing 50, and the grinding rod 40 is detachably connected to the quick-release mounting part 20.

[0032] The housing 50 has a cavity 51, and a movable hole 52 is provided on one side of the cavity 51. A waterproof structure 53 is provided in the movable hole 52, and an elastic protrusion 531 is provided on the inner side of the waterproof structure 53. The main body 10 is disposed in the cavity 51. The quick-release mounting part 20 extends from the movable hole 52 to the outside of the cavity 51. The elastic protrusion 531 is arranged around the quick-release mounting part 20 and abuts against the outer side of the quick-release mounting part 20. The axial direction of the movable hole 52 is parallel to the vibration direction of the quick-release mounting part 20. When the quick-release mounting part 20 vibrates back and forth to drive the grinding rod 40 to vibrate, the friction between the quick-release mounting part 20 and the elastic protrusion 531 will cause the elastic protrusion 531 to swing back and forth. However, the elastic force of the elastic protrusion 531 will drive the elastic protrusion 531 to always keep pressing against the quick-release mounting part 20, preventing liquid from entering the receiving cavity 51 from the gap between the waterproof structure 53 and the quick-release mounting part 20, thus achieving a better waterproof effect.

[0033] The housing 50 includes an inner shell 54 and an outer shell 55. The outer shell 55 covers the outside of the inner shell 54. The inner shell 54 and the outer shell 55 surround to form the receiving cavity 51. The movable hole 52 is formed on the inner shell 54. The main body 10 is disposed in the receiving cavity 51. A portion of the waterproof structure 53 is disposed between the inner shell 54 and the outer shell 55. The waterproof structure 53 is clamped by the cooperation of the outer shell 55 and the inner shell 54, thereby improving the installation stability of the waterproof structure 53.

[0034] The inner shell 54 is provided with a plurality of positioning buckles 541, and the waterproof structure 53 is provided with a plurality of positioning grooves 532. The positioning buckles 541 and the positioning grooves 532 are positioned and engaged accordingly, so that the waterproof structure 53 is stably positioned on the inner shell 54. The outer shell 55 presses the waterproof structure 53 tightly, so that the positioning block and the positioning groove 532 are stably engaged, which helps to further improve the positioning stability.

[0035] Furthermore, since different grinding rods 40 vary in length, they may exhibit instability during reciprocating vibration. Therefore, support holes or grooves can be added to the housing 50, through which the grinding rod 40 can pass. These support holes or grooves prevent the grinding rod 40 from shifting its position in the direction perpendicular to the vibration direction. Additionally, the grinding rod 40 can be made of lightweight metal or plastic to prevent excessive weight from affecting the overall balance of the motor if the grinding rod 40 is too long.

[0036] Although 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 alterations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents. Item limited.

Claims

1. An electric motor, characterized in that, include: The main body has a first linear output terminal and a second linear output terminal, the vibration directions of the first linear output terminal and the second linear output terminal are opposite; A quick-release mounting part is provided for detachable assembly with a grinding rod, and the quick-release mounting part is located at the first linear output end. A counterweight is disposed at the second linear output terminal.

2. The motor according to claim 1, characterized in that: The quick-release mounting part is provided with a mounting base, which is arranged on one side of the first linear output terminal.

3. The motor according to claim 2, characterized in that: The mounting base is provided with a mounting hole, and a rotation limiting groove is provided on one side of the mounting hole. The rotation limiting groove extends circumferentially along the mounting hole, and an avoidance notch is provided on the side of the rotation limiting groove away from the main body.

4. The motor according to claim 3, characterized in that: The rotating limiting groove is provided with a slot for engaging with the limiting protrusion of the grinding rod.

5. The motor according to claim 2, characterized in that: The quick-release mounting part includes a base, a mounting seat, and a bending connector. The base is assembled with the first linear output end, and the mounting seat is arranged on one side of the main body and connected to the base through the bending connector.

6. The motor according to claim 2, characterized in that: The counterweight is provided with a counterweight part, which is located on the side of the counterweight away from the mounting base and extends in a direction away from the mounting base.

7. A motor according to any one of claims 1 to 6, characterized in that: The quick-release mounting part is detachably connected to the first linear output end through a snap-fit ​​structure or a threaded structure.

8. A motor according to any one of claims 1 to 6, characterized in that: The counterweight is detachably connected to the second linear output terminal via a snap-fit ​​structure or a threaded structure.

9. A motor according to any one of claims 1 to 6, characterized in that: The main body includes a base, a first vibration frame, a second vibration frame, a coil section, a first magnet, and a second magnet. The first vibration frame and the second vibration frame are disposed on the base. A first linear output terminal is formed on the first vibration frame, and a second linear output terminal is formed on the second vibration frame. The coil section is disposed on the base. The first magnet is disposed on the first vibration frame, and the second magnet is disposed on the second vibration frame. The first magnet and the second magnet are arranged side by side, and the N and S poles of the first magnet are arranged in opposite directions to the N and S poles of the second magnet.

10. A reciprocating grinding device, characterized in that, include: The housing, the grinding rod, and the motor as described in any one of claims 1 to 9; The main body of the motor is housed within the casing; The grinding rod is detachably connected to the quick-release mounting part; The housing has a cavity, a movable hole is provided on one side of the cavity, a waterproof structure is provided in the movable hole, and an elastic protrusion is provided on the inner side of the waterproof structure. The main body is disposed in the accommodating cavity, the quick-release mounting part extends from the movable hole to the outside of the accommodating cavity, the elastic protrusion is arranged around the quick-release mounting part, and the elastic protrusion abuts against the outer side of the quick-release mounting part; The housing includes an inner shell and an outer shell, the outer shell covering the outside of the inner shell, the inner shell and the outer shell surrounding each other to form the receiving cavity, the movable hole being formed on the inner shell, the main body being disposed within the receiving cavity, and a portion of the waterproof structure being disposed between the inner shell and the outer shell; The inner shell is provided with multiple positioning buckles, and the waterproof structure is provided with multiple positioning grooves, with the positioning buckles corresponding to and engaging with the positioning grooves.

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