WO2020206987A1

WO2020206987A1 - Vibration structure of vibration motor generating different vibration forces during forward and reverse rotation

Info

Publication number: WO2020206987A1
Application number: PCT/CN2019/113821
Authority: WO
Inventors: 严川波; 孙鑫
Original assignee: 卧龙电气驱动集团股份有限公司; 绍兴欧力-卧龙振动机械有限公司
Priority date: 2019-04-06
Filing date: 2019-10-29
Publication date: 2020-10-15
Also published as: CN110011474A

Abstract

A vibration structure of a vibration motor generating different vibration forces during forward and reverse rotation, pertaining to the field of vibration motors. Most existing vibration motors are only capable of generating one specific vibration force under a fixed frequency, and the vibration force during a single use cannot be adjusted. The present structure comprises a main body (1) of a vibration motor, a rotating shaft (2), a driving eccentric block (3), and a driven eccentric block (4). An end surface of the driving eccentric block (3) facing the driven eccentric block (4) is provided with an arc-shaped slot (301) concentric with the rotating shaft (2), and a positioning pin (6) extending into the arc-shaped slot (301) is provided at a location in a terminal direction of the driven eccentric block (4). A shoulder portion of the driving eccentric block (3) on one side is fixed with a pressing plate (5). When shoulder portions of the two eccentric blocks are aligned axially, the pressing plate (5) presses against the shoulder portion of the driven eccentric block (4) on the same side, and an embedded magnet (7) in the shoulder portion of the driven eccentric block (4) on that side attracts the pressing plate (5). Terminal portions of the positioning pin (6) and the arc-shaped slot (301) on the same side are in contact with each other. When the motor rotates forward or in reverse, the two eccentric blocks are aligned or offset by an angle in an axial direction, thereby generating a 100% vibration force or a 50% vibration force, respectively, and realizing vibration force adjustment of a motor during a single use.

Description

A vibrating structure of a vibrating motor that generates different vibrating forces during forward and reverse rotation

Technical field

The invention relates to the field of vibrating motors, in particular to a vibrating structure of a vibrating motor that generates different vibrating forces during forward and reverse rotation.

Background technique

Most of the existing vibration motors on the market can only produce one vibration force without changing the frequency during use. Even if the frequency is changed, it can only generate a specific vibration force at a specific frequency, and cannot realize the motor in a single use process. Vibration force adjustment in.

Taking into account the difficulty of adjusting the vibration force during a single use of the existing vibration motor, combined with the motor structure, a vibrating motor forward and reverse structure was redesigned, which can enable customers to realize the forward and reverse rotation of the motor through the inverter during use. In the process of forward and reverse rotation, two vibration forces are generated by changing the position of the driven eccentric block, which solves the problem of difficulty in adjusting the vibration force of the vibration motor when the frequency is not adjusted during use.

Summary of the invention

The technical problem to be solved and the technical task proposed by the present invention are to perfect and improve the existing technical solutions, and provide a vibrating motor vibration structure that generates different vibrating forces during forward and reverse rotation, so as to achieve the condition of not changing the frequency The purpose is to produce two different vibration forces for forward and reverse rotation. To this end, the present invention adopts the following technical solutions.

A vibrating structure of a vibrating motor that generates different vibrating forces during forward and reverse rotations, including a main body of the vibrating motor, a rotating shaft arranged in the main body of the vibrating motor, an active eccentric block arranged on the rotating shaft and a follower located on the axial outer side of the active eccentric block An eccentric block, one end surface of the active eccentric block facing the driven eccentric block is provided with a circular arc groove with the center of the rotating shaft as the axis, and the end of the driven eccentric block is provided with a positioning pin which faces the shaft The arc groove of the active eccentric block is extended to the inside. The radial shoulder of the active eccentric block is fixed with a removable pressure plate. When the shoulders of the active eccentric block and the driven eccentric block are aligned, the pressure plate presses the same side of the active eccentric block. At this time, the positioning pin is located below the side shoulder, and the positioning pin extends to the end position of the arc groove below the side shoulder. When the motor rotates counterclockwise or clockwise, the positioning pin in the driven eccentric block is pressed against the end of the arc groove under the shoulder of the active eccentric block on the same side, and the two eccentric blocks axially overlap, resulting in 100% Vibration force, when the motor rotates in the other direction, the driven eccentric block deflects due to inertia, and the positioning pin abuts on the other end of the arc groove of the active eccentric block, making the two eccentric blocks form an angle in the axial view Angle operation produces lower vibration force, realizes the adjustment of the vibration force of the motor during a single use, and solves the problem of difficulty in adjusting the vibration force during the use of the vibration motor; the realization structure is simple, stable and reliable.

As a further improvement and supplement to the above technical solution, the present invention also includes the following additional technical features.

A magnet is embedded on the shoulder of the driven eccentric block located below the pressing plate, and the top surface of the magnet is lower than the plane of the shoulder of the driven eccentric block. Due to the strong suction force between the pressure plate and the magnet, when the motor stops, the driven eccentric block and the active eccentric block can be quickly merged into the same angle under the working condition of reversing at an angle to prevent the driven eccentric block When stopping, because of inertia, the positioning pin on the driven eccentric block hits the end of the arc groove in the active eccentric block and swings left and right; the top surface of the magnet is lower than the plane of the shoulder of the driven eccentric block, which can prevent the height of the magnet. When it is on the shoulder plane, the magnet is broken due to the impact of the pressure plate.

A baffle ring is arranged on the axial outer side of the driven eccentric block, and the baffle ring is fastened to the rotating shaft by a plurality of evenly distributed set screws. The retaining ring can effectively prevent the possible axial displacement of the eccentric block during use. The retaining ring is fastened to the rotating shaft by a plurality of uniformly distributed set screws, which can achieve reliable and stable fixing without changing the structure of the rotating shaft.

The axially outer side of the retaining ring is provided with an elastic retaining ring for the shaft, and the radial inner side of the elastic retaining ring for the shaft is located in the retaining ring groove of the rotating shaft. During use, the eccentric block may have a second protective effect on the possible axial displacement, and the protective effect is better, safer and more reliable.

Wear-resistant washers are arranged between the driving eccentric block and the driven eccentric block, and between the driven eccentric block and the retaining ring. It is used to separate the active eccentric block and the driven eccentric block, the driven eccentric block and the retaining ring, and reduce the wear between the surface of the driven eccentric block during the forward and reverse movement.

The shaft hole of the driven eccentric block is tightly equipped with a wear-resistant copper sleeve, and the shaft passes through the center hole of the wear-resistant copper sleeve. The driven eccentric block reduces the wear between the driven eccentric block and the rotating shaft during the forward and reverse rotation.

The two ends of the arc groove are both arc shapes that match the side of the positioning pin. When the positioning pin is at the end of the arc groove, the center of the arc at the end of the arc groove is aligned with the center of the positioning pin; Radial symmetry. When the positioning pin laterally impacts the end of the arc groove, the arc-shaped end side can effectively increase the impact contact area with the side of the positioning pin. Compared with the point-line contact, the force at the impact is dispersed, and the arc groove end The part and the positioning pin are not easily deformed due to excessive impact.

The positioning pin is fastened to the pin hole of the driven eccentric block through a thread, the pin tail diameter of the positioning pin is larger than the pin hole diameter, and the pin tail is located in the counterbore on the axial outer side of the driven eccentric block. The screw fastening is simple and reliable, and the pin tail of the positioning pin is located in the counterbore, which will not interfere with the axially outer parts.

Both the active eccentric block and the rotating shaft are provided with key grooves, and the active eccentric block and the rotating shaft are positioned by flat keys arranged in the key grooves. The radial locking of the active eccentric block and the rotating shaft is realized by the flat key, and the structure is simple and reliable.

The upper part of the shaft hole of the active eccentric block is broken from the middle to form left and right clamping blocks, and the left and right clamping blocks are fastened and clamped to the rotating shaft by locking screws with bowl-shaped washers. The active eccentric block can be effectively locked on the rotating shaft, and the bowl-shaped washer has a good anti-loosening effect.

The magnet is embedded in the counterbore of the shoulder of the driven eccentric block, and AB glue is coated between the magnet and the counterbore. Make the fit between the magnet and the counterbore stronger.

Bearing grease is coated between the wear-resistant copper sleeve and the rotating shaft. It can more effectively reduce the wear between the wear-resistant copper sleeve and the rotating shaft during the forward and reverse rotation.

Beneficial effects: 1. Conveniently realizes the generation of two different vibration forces during the forward and reverse rotation of the motor, realizes the adjustment of the vibration force of the motor during a single use, and solves the difficulty of adjusting the vibration force during the use of the vibration motor The problem, simple structure, stable and reliable operation.

2. Through the use of wear-resistant washers, the active eccentric block and the driven eccentric block, as well as the driven eccentric block and the retaining ring are separated, thereby reducing the end face wear of the driven eccentric block during forward and reverse movement.

3. By tightly fitting a wear-resistant copper sleeve in the shaft hole of the driven eccentric block, and coating bearing grease between the wear-resistant copper sleeve and the shaft, the gap between the inner hole of the driven eccentric block and the shaft can be reduced more effectively. The wear and tear in the process of forward and reverse rotation increases the service life of the driven eccentric block.

4. Through the attraction of the pressure plate and the magnet, when the motor stops, the driven eccentric block and the active eccentric block can be quickly merged into the same angle under the condition of reversing at an angle to prevent the driven eccentric block from stopping When the positioning pin on the driven eccentric block hits the end of the arc groove in the active eccentric block due to inertia, it swings left and right.

5. By providing a retaining ring on the axial outer side of the driven eccentric block, and setting an elastic retaining ring for the shaft on the axial outer side of the retaining ring, it can effectively prevent the possible axial displacement of the eccentric block during use. Road protection, better protection, safer and more reliable.

6. The top surface of the magnet is lower than the plane of the shoulder of the driven eccentric block, which can prevent the magnet from breaking due to the impact of the pressure plate when the magnet is higher than the plane of the shoulder.

7. The positioning pin and the arc groove are in arc surface impact contact, the impact contact area is large, the unit impact force of the impact part is small, and the end of the arc groove and the positioning pin are not easily deformed due to excessive impact.

Description of the drawings

Figure 1 is a schematic diagram of the structure of the present invention.

Figure 2 is a schematic view of an axial vertical section of the present invention.

Figure 3 is a schematic diagram of the partial blasting structure of the present invention.

In the picture: 1-vibration motor body; 2-rotating shaft; 3-active eccentric block; 4-driven eccentric block; 5-pressure plate; 6-positioning pin; 7-magnet; 8-retaining ring; 9-set screw; 10- Elastic retaining ring for shaft; 11- Wear-resistant washer; 12- Wear-resistant copper sleeve; 13- Flat key; 14- Locking screw; 15- Bowl washer; 301- Arc groove; 302- Clamping block.

detailed description

The technical solution of the present invention will be further described in detail below in conjunction with the accompanying drawings of the specification.

As shown in Figure 1-3, a vibration structure of a vibration motor that generates different vibration forces during forward and reverse rotation, including a vibration motor body 1, a rotating shaft provided in the vibrating

motor body

1, 2, and an active eccentricity provided on the rotating shaft 2 The block 3 and the driven eccentric block 4 located on the axial outer side of the active eccentric block 3, the end surface of the active eccentric block 3 facing the driven eccentric block 4 is provided with a circular arc groove 301 with the center of the rotating shaft 2 as the axis, and the driven eccentric block The end of the block 4 is provided with a positioning pin 6. The positioning pin 6 extends axially inwardly into the arc groove 301 of the active eccentric block 3. A detachable pressure plate 5 is fixed on the radial shoulder of the active eccentric block 3, which is active eccentric When the block 3 is aligned with the shoulder of the driven eccentric block 4, the pressure plate 5 presses the shoulder of the driven eccentric block 4 on the same side of the active eccentric block 3. At this time, the positioning pin 6 is located below the shoulder of the side, and the positioning pin 6 It extends to the end position of the arc groove 301 below the side shoulder.

In order to prevent the driven eccentric block 4 from swinging back and forth when the motor is stopped, the shoulder of the driven eccentric block 4 under the pressure plate 5 is embedded with a magnet 7, and the top surface of the magnet 7 is lower than the plane of the shoulder of the driven eccentric block 4 . Due to the strong suction force between the pressure plate 5 and the magnet 7, when the motor stops, the driven eccentric block 4 and the active eccentric block 3 can be quickly merged into the same angle under the working condition of reversing at an angle to prevent When the driven eccentric block 4 stops due to inertia, the positioning pin 6 on the driven eccentric block 4 hits the end of the arc groove 301 in the active eccentric block 3 and swings left and right; the top surface of the magnet 7 is lower than the driven eccentric block 4 The plane of the shoulder can prevent the magnet 7 from breaking due to the impact of the pressure plate 5 when the magnet 7 is higher than the plane of the shoulder.

In order to prevent the axial displacement of the eccentric block, a retaining ring 8 is provided on the axial outer side of the driven eccentric block 4, and the retaining ring 8 is fastened to the rotating shaft 2 by 4 set screws 9 that are evenly distributed around. The retaining ring 8 can effectively prevent the possible axial displacement of the eccentric block during use. The retaining ring 8 is fastened to the rotating shaft 2 by a plurality of uniformly distributed set screws 9, which can achieve reliable and stable fixation without any changes. 2 structure of the shaft.

In order to better prevent the axial displacement, the axially outer side of the retaining ring 8 is provided with a shaft elastic retaining ring 10, and the radial inner side of the shaft elastic retaining ring 10 is located in the retaining ring groove of the rotating shaft 2. During use, the eccentric block may have a second protective effect on the possible axial displacement, and the protective effect is better, safer and more reliable.

In order to reduce the wear of the end face of the driven eccentric block 4, wear-resistant washers 11 are provided between the driving eccentric block 3 and the driven eccentric block 4, and between the driven eccentric block 4 and the retaining ring 8. It is used to separate the active eccentric block 3 and the driven eccentric block 4 and the driven eccentric block 4 and the retaining ring 8 to reduce the wear on both sides of the driven eccentric block 4 during the forward and reverse movement.

In order to reduce wear, the hole of the shaft 2 of the driven eccentric block 4 is tightly equipped with a wear-resistant copper sleeve 12, and the shaft 2 passes through the center hole of the wear-resistant copper sleeve 12. The driven eccentric block 4 reduces the wear between the driven eccentric block 4 and the rotating shaft 2 during the forward and reverse rotation.

In order to increase the contact area of the end impact, the two ends of the arc groove 301 are both arc shapes matching the side surface of the positioning pin 6. When the positioning pin 6 is located at the end of the arc groove 301, the end of the arc groove 301 The center of the arc is aligned with the center of the positioning pin 6; the arc groove 301 is radially symmetric. When the positioning pin 6 laterally impacts the end of the arc groove 301, the arc-shaped end side can effectively increase the impact contact area with the side of the positioning pin 6. Compared with the point-line contact, the impact force is dispersed, The end of the arc groove 301 and the positioning pin 6 are not easily deformed due to excessive impact.

In order to achieve simple and reliable fixation, the positioning pin 6 is fastened to the pin hole of the driven eccentric block 4 through threads. The diameter of the pin tail of the positioning pin 6 is larger than the diameter of the pin hole, and the pin tail is located on the outer side of the driven eccentric block 4. In the hole. The screw fastening is simple and reliable, and the pin tail of the positioning pin 6 is located in the counterbore, which will not interfere with the axially outer parts.

In order to achieve radial locking, both the active eccentric block 3 and the rotating shaft 2 are provided with key grooves, and the active eccentric block 3 and the rotating shaft 2 are positioned by a flat key 13 arranged in the key groove. The radial locking of the active eccentric block 3 and the rotating shaft 2 is realized by the flat key 13, and the structure is simple and reliable.

In order to securely lock the active eccentric block 3 on the shaft 2, the upper part of the shaft hole of the active eccentric block 3 is broken from the middle to form left and right clamping blocks 302. The left and right clamping blocks 302 are tightened by the lock screws 14 with bowl washers 15 Clamp the shaft 2 firmly. The active eccentric block 3 can be effectively locked on the rotating shaft 2, and the bowl-shaped washer 15 has a good anti-loosening effect.

In order to make the insertion between the magnet 7 and the counterbore stronger, the magnet 7 is embedded in the counterbore on the shoulder of the driven eccentric block 4, and AB glue is coated between the magnet 7 and the counterbore. The fitting between the magnet 7 and the counterbore is stronger.

In order to better reduce wear, bearing grease is coated between the wear-resistant copper sleeve 12 and the rotating shaft 2. The wear between the wear-resistant copper sleeve 12 and the rotating shaft 2 during the forward and reverse rotation can be more effectively reduced.

In this example, the rotating shaft 2 on both sides of the vibrating motor body 1 is provided with a set of vibrating structures composed of an active eccentric block 3 and a driven eccentric block 4. When the motor rotates counterclockwise, the positioning pin 6 in the driven eccentric block 4 is pressed against the end of the arc groove 301 under the shoulder of the active eccentric block 3 on the same side, and the two eccentric blocks are axially superimposed to generate 100% vibration force. When the motor rotates clockwise, the driven eccentric block 4 deflects due to inertia, and the positioning pin 6 is pressed against the other end of the arc groove 301 of the active eccentric block 3, so that the two eccentric blocks form an angle in the axial view. Run, generate 50% vibration force, realize the adjustment of the vibration force of the motor in a single use process, and solve the problem of difficulty in adjusting the vibration force during the use of the vibration motor; the realization structure is simple, stable and reliable.

In this example, the pressure plate 5 is detachably fixed by screwing two M10×25 external hexagonal screws into the threaded hole of the shoulder of the active eccentric block 3; the magnet 7 is a magnet steel with a thickness of Φ25mm and a thickness of 10mm made of latex boron magnetic material. The top surface of the magnetic steel is 2mm lower than the shoulder plane of the driven eccentric block 4; the active eccentric block 3 is flame-cut from steel plate; the specification of the locking screw 14 with the bowl-shaped washer 15 is M12×65 hexagon socket head screw, The specification of the bowl washer 15 is D12; the wear-resistant copper sleeve 12 is made of tin bronze; the specification of the set screw 9 is an M6×8 hexagon socket flat-end screw; the depth of the arc groove 301 is 20mm; the thread specification of the positioning pin 6 is M27×2, the thread is coated with thread fastening glue; the positioning pin 6 on the axial outer side of the driven eccentric block 4 is Φ32mm and 16mm deep.

The vibrating structure of a vibrating motor that generates different vibrating forces during forward and reverse rotation as shown in Figures 1-3 above is a specific embodiment of the present invention. It has embodied the outstanding substantive features and significant progress of the present invention. It can be based on actual For use needs, under the enlightenment of the present invention, equivalent modifications to the shape, structure, etc., are all within the protection scope of this solution.

Claims

A vibration structure of a vibration motor that generates different vibration forces during forward and reverse rotations, including a vibration motor body (1), a rotating shaft (2) arranged in the vibration motor body (1), and an active eccentricity arranged on the rotating shaft (2) The block (3) and the driven eccentric block (4) located on the axial outer side of the active eccentric block (3), characterized in that: the active eccentric block (3) is arranged on one end surface facing the driven eccentric block (4) There is a circular arc groove (301) with the center of the rotating shaft (2) as the axis, the end of the driven eccentric block (4) is provided with a positioning pin (6), and the positioning pin (6) extends axially inward The arc groove (301) of the active eccentric block (3), the detachable pressure plate (5) is fixed on the radial shoulder of the active eccentric block (3), the active eccentric block (3) and the driven eccentric block (4) When the shoulders are aligned, the pressing plate (5) presses the shoulder of the driven eccentric block (4) on the same side of the active eccentric block (3). At this time, the positioning pin (6) is located below the side shoulder, and The positioning pin (6) extends into the end position of the circular arc groove (301) below the side shoulder.
The vibration structure of a vibrating motor that generates different vibration forces during forward and reverse rotations according to claim 1, characterized in that: the shoulder of the driven eccentric block (4) located below the pressure plate (5) is embedded The top surface of the magnet (7) is lower than the plane of the shoulder of the driven eccentric block (4).
The vibration structure of a vibrating motor that generates different vibrating forces during forward and reverse rotations according to claim 1, characterized in that: the driven eccentric block (4) is provided with a baffle ring (8) on the axial outer side thereof, The retaining ring (8) is fastened to the rotating shaft (2) by a plurality of evenly distributed set screws (9).
The vibration structure of a vibrating motor that generates different vibration forces during forward and reverse rotation according to claim 3, characterized in that: the axially outer side of the retaining ring (8) is provided with an elastic retaining ring (10) for the shaft , The radial inner side of the elastic retaining ring (10) for the shaft is located in the retaining ring groove of the rotating shaft (2).
The vibration structure of a vibrating motor that generates different vibration forces during forward and reverse rotations according to claim 3, characterized in that: between the active eccentric block (3) and the driven eccentric block (4), the driven A wear-resistant washer (11) is arranged between the eccentric block (4) and the retaining ring (8).
The vibration structure of a vibrating motor that generates different vibration forces during forward and reverse rotations according to claim 1, characterized in that: the shaft (2) of the driven eccentric block (4) is tightly equipped with wear-resistant The copper sleeve (12) and the rotating shaft (2) pass through the center hole of the wear-resistant copper sleeve (12).
The vibration structure of a vibrating motor that generates different vibration forces during forward and reverse rotations according to claim 1, characterized in that: both ends of the arc groove (301) are matched with the side surfaces of the positioning pin (6) When the positioning pin (6) is located at the end of the arc groove (301), the center of the arc at the end of the arc groove (301) is aligned with the center of the positioning pin (6); the diameter of the arc groove (301) To symmetry.
The vibration structure of a vibration motor that generates different vibration forces during forward and reverse rotations according to claim 7, wherein the positioning pin (6) is tightly connected to the pin hole of the driven eccentric block (4) through a thread The diameter of the pin tail of the positioning pin (6) is larger than the diameter of the pin hole, and the pin tail is located in the counterbore on the axial outer side of the driven eccentric block (4).
The vibrating structure of a vibrating motor that generates different vibrating forces during forward and reverse rotation according to claim 1, characterized in that: the active eccentric block (3) and the rotating shaft (2) are both provided with key grooves, the The active eccentric block (3) and the rotating shaft (2) are positioned by a flat key (13) arranged in the key groove.
The vibration structure of a vibrating motor that generates different vibration forces during forward and reverse rotation according to claim 9, characterized in that: the upper part of the shaft hole of the active eccentric block (3) is broken from the middle to form left and right clamps (302), the left and right clamping blocks (302) are fastened and clamped to the rotating shaft (2) by the locking screws (14) with the bowl-shaped washers (15).