Stepless adjustable amplitude device of vibration motor

Abstract

The utility model discloses a stepless adjustable amplitude device of a vibration motor, and relates to the technical field of vibration machinery. The device comprises a machine body, a transmission shaft is in transmission connection with the center in the machine body, the transmission shaft extends to the left side and the right side of the machine body, telescopic shafts are slidably connected to the left side and the right side of the transmission shaft in a limiting mode, and eccentric blocks are fixedly installed on the sides, away from the transmission shaft, of the telescopic shafts. Stepless adjusting assemblies are arranged between the left side and the right side of the transmission shaft and the telescopic shaft and used for conducting stepless adjustment on the amplitude of the vibration motor. According to the utility model, stepless adjustment of the vibration amplitude of the vibration motor in the operation process can be realized, the use effect of the vibration motor is improved, and when the amplification is increased, the eccentric blocks on the left and right sides can move towards one side close to the machine body, so that the shaking generated by the vibration motor when the amplitude is increased is slowed down, and the vibration efficiency is improved. The installation stability of the vibration motor is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of vibration machinery, in particular to a stepless amplitude adjustable device for a vibration motor. Background Art

[0002] A vibration motor is a motor that has a set of adjustable eccentric blocks installed at each end of the rotor shaft. The centrifugal force generated by the high-speed rotation of the shaft and eccentric blocks is used to generate the exciting force. The vibration motor can be used as a power source in general vibration machinery. At the same time, multiple vibration forms can be combined to meet the needs of some new vibration machinery.

[0003] During the use of existing vibration motors, in order to meet the different usage requirements of vibration machinery, the vibration frequency and amplitude need to be adjusted. When adjusting the amplitude, the existing vibration motor needs to be stopped for adjustment, and stepless adjustment cannot be achieved during operation, which reduces the use effect of the vibration motor. At the same time, when adjusting the amplitude, when the amplitude becomes larger, the excitation force generated will also become larger, making the vibration motor itself prone to shaking during operation, thereby reducing the stability of the vibration motor installation. Utility Model Content

[0004] The purpose of the present utility model is to solve the above-mentioned problems that stepless adjustment cannot be achieved during operation, which reduces the use effect of the vibration motor, and when the amplitude becomes larger, the vibration motor itself is prone to shaking during operation, which reduces the stability of the vibration motor installation. The present utility model provides a stepless adjustable amplitude device for a vibration motor.

[0005] In order to achieve the above-mentioned purpose, the present invention specifically adopts the following technical solutions:

[0006] A vibration motor stepless amplitude adjustable device includes a body, a transmission shaft is connected to the center of the body, the transmission shaft extends to the left and right sides of the body, the left and right sides of the transmission shaft are both connected to the telescopic shaft with limited sliding, the side of the telescopic shaft away from the transmission shaft is fixedly installed with an eccentric block, and a stepless adjustment component is provided between the left and right sides of the transmission shaft and the telescopic shaft, and the stepless adjustment component is used to steplessly adjust the amplitude of the vibration motor.

[0007] Furthermore, the eccentric positions of the eccentric blocks on the telescopic shafts on the left and right sides are the same, so the eccentric blocks on both sides are symmetrically arranged.

[0008] Furthermore, the stepless adjustment component includes a spring, and a spring is fixedly connected between one end of the telescopic shaft on the left and right sides located inside the transmission shaft and the inner wall of the transmission shaft, so that the telescopic shaft can elastically extend and retract, and a mounting seat 1 is evenly fixedly installed on the periphery of the left and right sides of the transmission shaft, and a mounting seat 2 is evenly fixedly installed on the periphery of the telescopic shaft located on one side inside the transmission shaft, and sliding grooves are evenly provided at the peripheries of the left and right sides of the transmission shaft where they are aligned with the mounting seat 2, and a counterweight block is provided on the outer side between the mounting seat 1 and the mounting seat 2 on the left and right sides, and a transmission rod is connected to the inner side of the counterweight block and the mounting seat 1 and the mounting seat 2 on both sides.

[0009] Furthermore, the second mounting seat is connected in a limited sliding manner inside the sliding groove, thereby realizing a limited sliding connection of the telescopic shaft.

[0010] Furthermore, the transmission rods are grouped in two, one end of which is hinged to the inner side of the counterweight block, and the other end is unfolded inward and hinged to the mounting seat 1 and mounting seat 2 on the left and right sides respectively. Therefore, when the counterweight block moves outward, it can pull the telescopic shaft to move inward of the transmission shaft.

[0011] Furthermore, the bottom of the adjacent side of the eccentric blocks on the left and right sides are limitedly and slidably connected with extension blocks, and the adjacent ends of the extension blocks on the left and right sides are transmission-connected with connecting rods between the bottom ends of the left and right sides of the transmission shaft. The connecting rods are arranged obliquely downward from the transmission shaft to the extension blocks. Therefore, when the telescopic shaft moves toward the inside of the transmission shaft, the extension blocks can be pushed to move outward through the action of the connecting rods.

[0012] Furthermore, mounting rings are fixedly connected to the left and right ends of the body, and protective covers are symmetrically fixedly installed on the left and right sides of the body through the mounting rings. The protective covers are wrapped around the outside of the stepless adjustment component and the eccentric block for protective wrapping.

[0013] The beneficial effects of the utility model are as follows:

[0014] The utility model, through the design of the stepless adjustment components between the transmission shafts on the left and right sides and the telescopic shaft, can complete the stepless adjustment of the amplitude by controlling the rotation speed of the driving transmission shaft, thereby realizing the adjustment of the amplitude during operation, thereby improving the use effect of the vibration motor. At the same time, when the amplification is increased, the eccentric blocks on the left and right sides can also be moved to the side closer to the body, thereby slowing down the shaking of the vibration motor itself when the amplitude is increased, thereby improving the stability of the vibration motor installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the three-dimensional structure of the utility model;

[0016] Figure 2 This is a schematic diagram of the three-dimensional structure of the utility model after the protective cover is removed;

[0017] Figure 3 This is a schematic diagram of the partial three-dimensional structure of the utility model;

[0018] Figure 4 This is a schematic diagram of the three-dimensional structure of the stepless adjustment component between the transmission shaft and the telescopic shaft of the utility model. Figure 1 ;

[0019] Figure 5 This is a schematic diagram of the three-dimensional structure of the stepless adjustment component between the transmission shaft and the telescopic shaft of the utility model. Figure 2 ;

[0020] Figure 6 It is a partially cutaway three-dimensional structural diagram of a stepless adjustment assembly between a transmission shaft and a telescopic shaft of the utility model.

[0021] Figure numerals: 1. body; 2. transmission shaft; 3. telescopic shaft; 4. eccentric block; 5. stepless adjustment assembly; 51. spring; 52. mounting seat 1; 53. mounting seat 2; 54. slide; 55. counterweight block; 56. transmission rod; 6. extension block; 7. connecting rod; 8. mounting ring; 9. protective cover. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention.

[0023] A vibration motor stepless adjustable amplitude device according to a preferred embodiment of the present invention will be described in detail below. Figures 1-6 As shown, a vibration motor steplessly adjustable amplitude device includes a body 1, a transmission shaft 2 is connected to the center of the body 1, the transmission shaft 2 extends to the left and right sides of the body 1, and the left and right sides of the transmission shaft 2 are limitedly slidably connected to the telescopic shaft 3, and the side of the telescopic shaft 3 away from the transmission shaft 2 is fixedly installed with an eccentric block 4. The eccentric position of the eccentric blocks 4 on the telescopic shafts 3 on the left and right sides is the same, so the eccentric blocks 4 on both sides are symmetrically arranged, and a stepless adjustment component 5 is provided between the left and right sides of the transmission shaft 2 and the telescopic shaft 3. The stepless adjustment component 5 is used to steplessly adjust the amplitude of the vibration motor.

[0024] The stepless adjustment assembly 5 includes a spring 51 , and springs 51 are fixedly connected between one end of the left and right telescopic shafts 3 located inside the transmission shaft 2 and the inner wall of the transmission shaft 2 , so that the telescopic shafts 3 can elastically extend and retract.

[0025] Mounting seats 1 52 are evenly fixedly installed on the periphery of the left and right sides of the transmission shaft 2, and mounting seats 2 53 are evenly fixedly installed on the periphery of the telescopic shaft 3 located on one side inside the transmission shaft 2. Slide grooves 54 are evenly opened on the periphery of the left and right sides of the transmission shaft 2 at positions aligned with the mounting seats 2 53. The mounting seats 2 53 are limitedly slidably connected inside the slide grooves 54, thereby realizing the limited sliding connection of the telescopic shaft 3.

[0026] A counterweight block 55 is provided on the outer side between the left and right side mounting seat 1 52 and the mounting seat 2 53, and a transmission rod 56 is connected to the inner side of the counterweight block 55 and the mounting seat 1 52 and the mounting seat 2 53 on both sides. The transmission rods 56 are two in a group, one end of which is hinged to the inner side of the counterweight block 55, and the other end is unfolded inward and hinged to the left and right side mounting seat 1 52 and the mounting seat 2 53 respectively. Therefore, when the counterweight block 55 moves outward, it can pull the telescopic shaft 3 to move inward of the transmission shaft 2.

[0027] The bottom of the adjacent side of the left and right eccentric blocks 4 are both limitedly and slidably connected with extension blocks 6, and the adjacent ends of the left and right extension blocks 6 are transmission-connected with connecting rods 7 between the bottom ends of the left and right sides of the transmission shaft 2. The connecting rods 7 are arranged obliquely downward from the transmission shaft 2 to the extension blocks 6. Therefore, when the telescopic shaft 3 moves toward the inside of the transmission shaft 2, the extension blocks 6 can be pushed to move outward through the action of the connecting rods 7.

[0028] The left and right ends of the body 1 are fixedly connected with mounting rings 8, and the left and right sides of the body 1 are symmetrically fixed with protective covers 9 through the mounting rings 8. The protective covers 9 are wrapped around the outside of the stepless adjustment component 5 and the eccentric block 4 for protective wrapping.

[0029] The working principle of this utility model is:

[0030] When in use, the transmission shaft 2 is driven to rotate through the body 1. During the rotation of the transmission shaft 2, the telescopic shaft 3 and the eccentric block 4 on the left and right sides can be driven to rotate. The centrifugal force generated is used to obtain an exciting force to achieve a vibration effect.

[0031] When the amplitude of vibration needs to be adjusted, the speed of rotation of the driving transmission shaft 2 is accelerated by the machine body 1, and the outer counterweight 55 can be driven to rotate synchronously through the action of the transmission rod 56 between the mounting seat 1 52 and the mounting seat 2 53 on the transmission shaft 2 and the telescopic shaft 3. As the speed increases, the counterweight 55 will move outward under the action of centrifugal force. In the process of the counterweight 55 moving outward, the telescopic shaft 3 compression spring 51 can be pulled to move inward of the transmission shaft 2 through the action of the transmission rod 56, so that the telescopic shaft 3 on both sides drives the eccentric mass 4 to move toward the side close to the transmission shaft 2. When the eccentric mass 4 moves toward the side close to the transmission shaft 2, the design of the connecting rod 7 between the extension block 6 at the bottom of the eccentric mass 4 and the transmission shaft 2 can push the extension block 6 to move outward, thereby causing the overall center of gravity of the eccentric mass 4 and the extension block 6 to move outward, thereby achieving the effect of increasing the amplitude.

[0032] When the amplitude needs to be reduced, the speed at which the body 1 drives the transmission shaft 2 to rotate is reduced, and the speed at which the counterweight 55 rotates is also reduced, so that the centrifugal force on the counterweight 55 is also reduced, and the telescopic shaft 3 moves outward under the action of the restoring force of the spring 51, thereby driving the eccentric block 4 to move outward, and under the action of the connecting rod 7, the extension block 6 is contracted toward the inside of the eccentric block 4, so that the overall center of gravity of the eccentric block 4 and the extension block 6 is contracted, thereby achieving the effect of reducing the amplitude.

[0033] In the process of increasing the amplitude, the telescopic shaft 3 and the eccentric mass 4 can also be pulled inward, so that the telescopic shaft 3 and the eccentric mass 4 on the left and right sides are closer to the body 1, so that the center of gravity of the vibration motor is more concentrated during operation, thereby reducing the shaking of the vibration motor itself when increasing the amplitude and improving the stability of the vibration motor installation.

[0034] The above description of the disclosed embodiments will enable one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not limited to the embodiments shown herein but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A vibration motor stepless amplitude adjustable device, comprising a body (1), characterized in that: A transmission shaft (2) is connected to the center of the body (1), and the transmission shaft (2) extends to the left and right sides of the body (1). The left and right sides of the transmission shaft (2) are both connected to telescopic shafts (3) in a limited sliding manner. An eccentric block (4) is fixedly installed on the side of the telescopic shaft (3) away from the transmission shaft (2). A stepless adjustment component (5) is provided between the left and right sides of the transmission shaft (2) and the telescopic shaft (3). The stepless adjustment component (5) is used to steplessly adjust the amplitude of the vibration motor.

2. The vibration motor stepless amplitude adjustable device according to claim 1, characterized in that: The eccentric positions of the eccentric blocks (4) on the telescopic shafts (3) on the left and right sides are the same, so the eccentric blocks (4) on both sides are symmetrically arranged.

3. The vibration motor stepless amplitude adjustable device according to claim 1, characterized in that: The stepless adjustment component (5) comprises: Spring (51), a spring (51) is fixedly connected between one end of the telescopic shaft (3) located inside the transmission shaft (2) and the inner wall of the transmission shaft (2); Mounting seat one (52), the outer periphery of the left and right sides of the transmission shaft (2) is evenly fixedly mounted with mounting seat one (52); A second mounting seat (53), wherein the telescopic shaft (3) is evenly and fixedly mounted with a second mounting seat (53) on the periphery of one side of the inner portion of the transmission shaft (2); Slide grooves (54), wherein the outer periphery of the left and right sides of the transmission shaft (2) is evenly provided with slide grooves (54) aligned with the second mounting seat (53); A counterweight (55) is provided on the outer sides between the first mounting seat (52) and the second mounting seat (53) on the left and right sides; A transmission rod (56) is provided for transmission connection between the inner side of the counterweight block (55) and the mounting seat 1 (52) and the mounting seat 2 (53) on both sides.

4. The vibration motor stepless amplitude adjustable device according to claim 3, characterized in that: The second mounting seat (53) is connected to the inner side of the sliding groove (54) in a limited sliding manner.

5. The vibration motor stepless amplitude adjustable device according to claim 3, characterized in that: The transmission rods (56) are grouped in two, one end of which is hinged to the inner side of the counterweight (55), and the other end of which is unfolded inward and hinged to the mounting seat 1 (52) and the mounting seat 2 (53) on the left and right sides respectively.

6. The vibration motor stepless amplitude adjustable device according to claim 1, characterized in that: The bottoms of the adjacent sides of the eccentric blocks (4) on the left and right sides are both limitedly slidably connected to extension blocks (6), and connecting rods (7) are transmission-connected between the adjacent ends of the extension blocks (6) on the left and right sides and the bottom ends of the left and right sides of the transmission shaft (2), and the connecting rods (7) are obliquely arranged downward from the transmission shaft (2) to the extension blocks (6).

7. The vibration motor stepless amplitude adjustable device according to claim 1, characterized in that: The left and right ends of the machine body (1) are fixedly connected with mounting rings (8), and the left and right sides of the machine body (1) are symmetrically fixedly mounted with protective covers (9) through the mounting rings (8), and the protective covers (9) are wrapped around the outside of the stepless adjustment component (5) and the eccentric block (4).

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