KR20090115339A - Vibrating device - Google Patents

Abstract

PURPOSE: A vibration generator is provided to implement various vibration modes by implementing a plurality of resonant frequencies according to the operation of a first vibrator and a second vibrator. CONSTITUTION: A fixing unit is supported in an upper protector(1) or lower protector(2). Two springs(61,62) are extended from the fixing unit. A bending part is formed in a connection point between two springs and the fixing unit. The bending part is bent with L-shape. A coil is wound around a bobbin of a lower protector. A core(3) generates magnetic flux by the current flowing in the coil. A reactor(8,81) is fixed in the extension part of two springs respectively. The interval between the core and the reactor is changed by the magnetic flux of the core.

Description

Vibration generating device

The present invention relates to a vibration generating device.

Vibration generating device is a device that is mounted to a device such as a terminal and a game machine to deliver a predetermined signal to the user. Representative examples of these vibration generating apparatuses are vibration motors that allow vibrations to be generated by an operation in which a rotor having an eccentric mass rotates.

However, the vibration motor has a problem of durability due to the deterioration of the rotating shaft due to the eccentric load of the rotor and sparks generated from the brush. Due to these problems, there is a problem that the operation reliability of the product is lowered. In addition, there is a problem that the manufacturing cost is increased due to the excessive number of parts. In addition, since only a vibration amount corresponding to a single mode can be obtained, when a plurality of vibration modes are required for a device that requires a vibration generator, a plurality of vibration motors have to be installed.

As an improvement in such a problem, Patent Document 1 and US Patent Publication No. 20070085425 have been disclosed. Patent Document 1 discloses a device that enables a plurality of vibration modes by a single vibration generating device that is linearly operated. However, according to the technique of Patent Document 1, since a plurality of springs and other parts for supporting the weight form a complicated positional relationship with each other, there is a problem that manufacturing is difficult and manufacturing costs are high. In addition, since the positional relationship of the parts is an important factor, there is a problem that vibration does not occur if the parts are not disposed at the proper positions with each other. There is a problem that does not work properly.

The present invention proposes a vibration generating device which solves all of the problems of the prior art described above, the cost required by the fact that the vibration generating device is a small component, the difficulty of the manufacturing process, and the reliability of the operation.

Vibration generating device of the present invention according to one aspect, the protective body; At least two springs supported by the protector and having a portion extending at least linearly after the bending part is engaged; A coil installed at a lower side of the spring; A core generating magnetic flux by a current flowing through the coil; And a reactant fixed to an extended portion of the at least two springs at a position corresponding to the core, the reactant being variable in distance from the core by magnetic flux of the core. According to the present invention, there is an advantage that the vibration of various modes can be obtained as a simple structure.

In the vibration generating device of the present invention according to the aspect, the at least two springs may be supported on the protector by a single fixing portion. In this case, there is an effect that the manufacturing is simple and the price is more inexpensive, such a configuration is a feature that can be implemented in the vibration generating apparatus of the present invention described above.

In the vibration generating device of the present invention according to the aspect, the bending portion is bent in a '┐' shape, thereby the advantage of the structure of the spring is further simplified.

In addition, in the vibration generating device of the present invention according to the above aspect, the coil is installed to correspond to at least two of the at least two springs together in a single structure, or at least two of the at least two springs, respectively By being installed correspondingly, it is possible to implement various spring operating states. The at least two springs may be parallel to each other to implement a simpler structure. In addition, the at least two springs may vibrate in various modes by vibrating at different resonance frequencies.

The present invention according to another aspect, the first vibrating body having a first resonant frequency; A second vibrating body having a second resonant frequency different from the first resonant frequency; And a controller configured to independently supply power to the first vibrating body and the second vibrating body. According to this, it is possible to obtain an advantage that the number of vibration modes that can be realized by a device that is powered and vibrated independently of each other significantly increases.

In addition, in the present invention according to another aspect, the first vibrating body and the second vibrating body has a straight spring, the straight spring may be formed a bending portion bent in a '┐' shape, according to this, vibration Since the structure of the generator is made simple, the production convenience and the number of parts can be reduced.

In addition, in the present invention according to another aspect, the frequency of the power supplied to the first vibrating body and the second vibrating body is different from each other, or at least three or more rated vibration amount according to the change in the frequency of the power supplied from the controller It may have a, it is possible to meet various requirements required in the vibration generating device.

The vibration generating apparatus according to the present invention can realize various vibration modes while satisfying high reliability, low cost, and convenience of a manufacturing process.

Hereinafter, with reference to the drawings will be described in detail a specific embodiment of the present invention.

<Example 1>

1 is a perspective view of a vibration generating device according to the first embodiment, Figure 2 is an exploded perspective view of the vibration generating device according to the first embodiment.

1 and 2, in the vibration generating apparatus of the first embodiment, a plurality of components for generating vibrations are built into an inner space provided by the upper protector 1 and the lower protector 2.

An elastic body 6 is installed in the internal space as a mechanism for providing a resilient force for generating vibration. The elastic body 6 is supported by the upper protector 1 or the lower protector 2, the fixing part 63 is fixed to the installation position of the elastic body 6, and two extending from the fixing part 63 Springs 61 and 62 are provided. At the point where the springs 61 and 62 and the fixing portion 63 are connected to each other, 'b'-shaped bending portions 64 and 65 are provided so that the springs 61 and 62 refer to the drawings. When enabled, the vibration in the vertical direction is possible. Here, the springs 61 and 62 have a spiral shape as seen in Patent Literature 1 or a shape extending in one direction rather than a zigzag shape. In addition, since the springs 61 and 62 are provided with two springs in a single fixing part 63, the springs 61 and 62 are driven by vibrations of various modes by the independent actions of the springs 61 and 62. I can make it.

Weights 7 and 71 are fixed to the ends of the springs 61 and 62 so that a strong vibration amount is generated during the reciprocating motion of the springs 61 and 62. The weights 7 and 71 are formed with grooves so as to be stably fixed to the ends of the springs 61 and 62, and end portions of the springs 61 and 62 are placed inside the grooves.

Reactants 8 and 81 are fixed to either side of the springs 61 and 62, respectively. The reactant (8) (81) is preferably a magnet, Nd magnet may be used, but is not limited to this, even if the magnetic material such as iron, there is no problem. However, in order to generate a strong suction force in response to the magnetic flux of the core 3, Nd magnet can be preferably used.

In order for the magnetic flux to reach the reactants 8 and 81, a bobbin 5 in which the coil 4 is wound is mounted on the lower protector 2, and a hollow part of the bobbin 5 is mounted on the lower protector 2. The core 3 is drawn out to the outside in the inserted state. The end of the core 3 is aligned with the reactant 8 in the vertical direction. As a result, the magnetic flux generated in the core 3 is applied to the reactant 8 so that the reactant 8 can be pulled downward.

According to the first embodiment, the suction force between the core 3 and the reactants 8 and 81 acts as a bending force of the springs 61 and 62. Then, the springs 61 and 62 are bent downward with respect to the bending portions 64 and 65 that are bent in a '┐' shape. Thereafter, when the magnetic flux of the core 3 is released, the springs 61 and 62 are bent upward by the elastic restoring force accumulated in the springs 61 and 62. As described above, the action of repeatedly bending the springs 61 and 62 to the upper side and the lower side causes the springs 61 and 62 to resonate at a predetermined current frequency, causing a large amount of vibration. As such, the springs 61 and 62 are springs 61 and 62 extending in one direction from one edge of the vibration generating device that is provided in one direction to the other edge thereof. Supported and the other side-the left end relative to the drawing-is caused to vibrate in a way to vibrate up and down. According to such an operation method, since a complicated internal configuration is not required inside the vibration generating device, the reliability of the vibration generating device can be improved.

On the other hand, according to the embodiment, the springs 61 and 62, the reactants 8 and 81 and the weights 7 and 71 are provided in pairs, respectively. Thus, the members provided in pairs vibrate independently of each other. In other words, the first spring 61, the first weight 7, and the first reactant 8 become a first vibrating body having a predetermined resonant frequency as a single structure, and the second spring 62 and the second spring 62. The second weight 71 and the second reactant 81 become a second vibrating body having a predetermined resonance frequency as a single structure. The first vibrating body and the second vibrating body may have different resonance frequencies. As a result, a plurality of resonant frequencies may be implemented according to the operation of the first vibrating body and the second vibrating body, and a plurality of resonant frequencies may be obtained according to the change of the frequency of the applied current of the coil 4. Therefore, it is possible to implement a plurality of vibration modes.

In addition, in order to make the resonant frequencies of the first vibrating body and the second vibrating body different, the second weight 71 is smaller than the first weight 7 in the embodiment, but is not limited thereto. The length or material of, the size of the reactant and the material of the reactant, or the distance between the reactant and the core may be different.

The operation of the vibration generating device according to the first embodiment will be described in detail.

3 is a cross-sectional view taken along line II ′ of FIG. 1. 3 is a simplified diagram for explaining the operation of the vibration generating device according to the embodiment, the bobbin and the coil, etc. are not displayed, but it is natural to be mounted.

Referring to FIG. 3, in the inner space of the upper protector 1 and the lower protector 2, the core 3 extends outward while being placed in the hollow portion of the bobbin 5. The magnetic flux generated by the coil 4 by the core 3 reaches the lower side of the reactant 8.

The springs 61 and 62 have bending portions 64 and 65 which are fixed by the lower protector 2 or the upper protector 1 and bent in a '┐' shape, and the bending part 64 65 extends further in one direction. Reactants 8 and 81 are further installed in the extended portion of the spring so that the reactants 8 and 81 are drawn into or pushed out of the spring by interaction with the core 3. In more detail, when the polarity of the magnetic flux generated in the core 3 is in the direction of pulling the reactants 8 and 81, the core 3 sucks the reactants 8 and 81 so that the spring 61 ( At the same time as pulling 62) downward, the elastic force is accumulated in the springs 61 and 62. When the magnetic flux in the core 3 disappears due to the interruption of the current, the springs 61 and 62 move upward by the elastic restoring force accumulated in the springs 61 and 62. By repeating this action, the springs 61 and 62 vibrate up and down, and when the frequency of the current flowing through the coil 4 reaches a predetermined resonance frequency for the vibrating body, the springs 61 and 62 are rotated. In this case, a large amount of vibration is generated.

At this time, it is easy to guess that the vibration amount is further maximized by the weights 7 and 71 fixed to the ends of the springs 61 and 62.

The operation of the vibration generating device according to the first embodiment will be described in time series.

When a current exemplified by a square wave or a sine wave flows in the coil 4, a magnetic circuit is induced in the core 3. The magnetic flux generated in the core 3 reaches the reactants 8 and 81 spaced apart from the end of the core 3 by a certain distance upward, and pulls the reactants 8 and 81 to spring 61. 62 is bent downward. Of course, the action of pulling or pushing the reactants 8 and 81 by the core 3 will depend on the polarity of the magnetic flux generated in the core 3.

The current is illustrated by illustrating square waves. After the reactants 8 and 81 are pulled to the core 3 by a predetermined distance, the current flowing through the coil 4 is cut off to remove the suction force to the reactants 8 and 81. Then, the springs 61 and 62 move upward by the elastic force of the springs 61 and 62 accumulated around the bending parts 64 and 65. In addition, it will be understood that the reactants 8 and 81 also move upward. The above and below movements of the reactants 8, 81 and the springs 61, 62 are repeatedly performed. The vertical and repeated movements of the reactants 8, 81 and the springs 61, 62 cause resonance in the vibrating body when the frequency of the current flowing through the coil 4 matches the resonant frequency of the vibrating body. This causes a large amount of vibration. This may be called the rated vibration amount of the vibration frequency. By the above-described action, the vibration generating device generates vibration in the vertical direction at the rated vibration amount.

On the other hand, the magnetic flux of the core 3 pulls the first reactant 8 and the second reactant 81 together. At this time, when the frequency of the current flowing in the coil 4 is changed, the resonant frequency of the first vibrating body including the first reactant 8 and the second vibrating body including the second reactant 81 are changed. The resonant frequency may include a resonant frequency of the vibrating body including the first reactant 8 and the second reactant 81 together, that is, the first vibrating body and the second vibrating body operating as an integrated vibrometer. .

4 shows the vibration amount generated in such a vibrating body and the frequency of the current flowing through the coil 4. Referring to FIG. 4, the resonant frequency of the first vibrating body to which the first reactant 8 belongs may be referred to as P1, and the resonant frequency of the vibrating body including both the first vibrating body and the second vibrating body may be referred to as P2. Can be. Of course, the resonance frequency of the first vibrating body may also be included, but the illustration is omitted because of the small amount of vibration itself.

As can be seen from the description, the vibration generating device of the first embodiment passes through the resonant frequency of the vibrating body including the springs 61 and 62 corresponding to the frequency of the current flowing in the coil 4. When the current is matched with the resonant frequency of the vibrating body, the vibrating body resonates to obtain a large amount of vibration. According to the vibration generating device of the first embodiment, the vibration amounts of N1 and N2 at the frequencies f1 and f2 respectively. Can be obtained. This means that in the vibration generating device according to the first embodiment, two rated vibration amounts can be obtained at two different frequencies.

According to this embodiment, two vibration amounts can be obtained by a spring having a bending portion that is bent in a '┐' shape and extended in one direction, thereby obtaining advantages of high reliability, low cost, and convenience of a manufacturing process. Can be. In addition, the vibration is implemented by a simple straight spring, there is an advantage that can implement a variety of vibration modes as a simple overlapping structure.

<Example 2>

The second embodiment is different from that of the first embodiment, and applies a magnetic flux that is controlled separately for each of the reactants 8 and 81. As a result, the vibrating bodies including the reactants 8 and 81 vibrate independently of each other as separate vibrometers. However, the description of the first embodiment is used for the parts without detailed description, and the same reference numerals are assigned to the same components for the same reference numerals.

5 is an exploded perspective view of the vibration generating device according to the second embodiment.

Referring to FIG. 5, magnetic flux is applied to the first reactant 8 to vibrate the first vibrator including the first spring 61, the first reactant 8, and the first weight 7. As a structure to apply, the 1st bobbin 51, the 1st coil 41, and the 1st core 31 are provided. In addition, in order to vibrate the second vibrating body including the first spring 61, the first reactant 8, and the first weight 7, the magnetic flux is applied to the second reactant 81. The second bobbin 52, the second coil 42, and the second core 32 are provided.

Current is applied to the first and second coils 41 and 42 separately, and magnetic fluxes are generated to the first and second cores 31 and 32 separately from each other. The magnetic flux of the cores 31 and 32 may be influenced by an adjacent configuration, but the influence of the cores 31 and 32 may be negligible.

Fig. 6 is a block diagram schematically showing the configuration of the second embodiment.

Referring to FIG. 6, the controller 100 of the vibration generating device transmits a driving signal to the vibrating bodies 103 and 104 via the switches 101 and 102. Here, the switches 101 and 102 may be embedded in the controller 100.

The vibrating bodies 103 and 104 are each composed of a first vibrating body 103 and a second vibrating body 104. The first vibrator 103 includes a first coil 41 and a first core 31, and may suck the first reactant 8 by magnetic flux generated in the first core 31. Can be. The second vibrator 104 includes a second coil 42 and a second core 32, and sucks the second reactant 81 by the magnetic flux generated by the second core 32. can do. Of course, elastic restoring force may be accumulated in the springs 61 and 62, and the spring may reciprocate and generate vibration by the accumulated elastic restoring force.

As a result of this action, the first spring 61 and the second spring 62 may have a vibration state independent of each other. Here, if the switches 101 and 102 are all connected, and the controller 100 supplies only a single frequency of current, it will be easily understood that this is the same as the first embodiment.

According to the second embodiment, various aspects of vibration can be obtained. Hereinafter, the vibration state will be described with reference to the vibration amount N curve compared with the input frequency f shown in FIG. 7.

Referring to FIG. 7, the frequency-vibration curve of the first vibrator 103 is indicated by reference numeral 201, the frequency-vibration curve of the second vibrator 104 is indicated by reference numeral 202, and the first The frequency-vibration curve of an embodiment can be indicated by reference numeral 203. Therefore, by operating only the first vibrating body, the vibration amount of maximum N3 can be obtained with respect to the f3 frequency, and by operating only the second vibrating body, the vibration amount of the maximum N4 with respect to the f4 frequency can be obtained. As compared with the first embodiment, the vibration amount of N1 and N2, that is, the rated vibration amount in two cases can be obtained, and thus, there are advantages of obtaining four vibrations in total.

In addition, according to the second embodiment, by varying the operating frequency of the vibrating body, there is an advantage that can implement a variety of frequencies. For example, one oscillator may operate at a resonant frequency and the other may obtain another frequency-vibration curve by varying the operating frequency, and frequency-vibration according to various other combinations. Of course, a curve can be obtained.

According to the second embodiment, in addition to the advantages of the first embodiment, it is possible to obtain an advantage that can implement a variety of vibration modes.

The spirit of the present invention is not limited to the embodiments described above, and those skilled in the art who understand the spirit of the present invention can easily suggest other embodiments falling within the scope of the same idea by adding, changing, deleting, and adding components. It may be said that this is also included within the scope of the present invention.

For example, if there is no problem that the coil is seated on the lower protector, the coil wound without installing a separate bobbin may be seated on the lower protector as it is.

In addition, in the above embodiment, the configuration that includes two vibrating bodies including a spring, but not limited to this may include three or more. Thus, even if the vibrating body is contained in a single vibration generating device will be included in the spirit of the present invention. In addition, the vibration generating device of the present invention has the advantage that the structure of the vibrating body can be conveniently added in parallel, there is an advantage that can easily implement a vibration generating device that implements more various vibration modes.

In addition, in the above embodiment, the spring is described as extending from a single fixing portion, but is not limited to this, the spring may be fixed to the lower protector and the upper protector individually. However, when it is fixed with a single fixed portion, it is expected that the convenience of manufacturing will be increased and the price will be more affordable.

The present invention, while being high reliability, low cost, convenience of the manufacturing process is satisfied, by implementing a variety of vibration modes by a single vibration generating device, there is an advantage that the user can use more conveniently.

1 is a perspective view of a vibration generating device according to a first embodiment.

2 is an exploded perspective view of the vibration generating device according to the first embodiment;

3 is a cross-sectional view of II ′ of FIG. 1.

4 is a diagram of the frequency of the amount of vibration generated in the vibrating body and the current flowing through the coil according to the first embodiment;

5 is an exploded perspective view of the vibration generating device according to the second embodiment.

Fig. 6 is a block diagram schematically showing the configuration of the second embodiment.

7 is a diagram of the frequency of the amount of vibration generated in the vibrating body and the current flowing through the coil according to the first embodiment;

Claims (11)

Protector; At least two springs supported by the protector and having a portion extending at least linearly after the bending part is engaged; A coil installed at a lower side of the spring; A core generating magnetic flux by a current flowing through the coil; And Vibration generating device is fixed to the extended portion of each of the at least two springs in a position corresponding to the core, the reaction body is variable in distance to the core by the magnetic flux of the core. The method of claim 1, And the at least two springs are supported by the protector by a single fixing part. The method of claim 1, The bending unit is a vibration generating device which is bent in a '┐' shape. The method of claim 1, The coil is provided with at least two of the at least two springs correspondingly installed in a single structure, or corresponding to at least two of the at least two springs, respectively. The method of claim 1, The at least two springs are vibration generating apparatus parallel to each other. The method of claim 1, The at least two springs vibration device vibrating at different resonant frequencies. A first vibrating body having a first resonant frequency; A second vibrating body having a second resonant frequency different from the first resonant frequency; And Vibration generating device including a controller for supplying power to the first vibrating body and the second vibrating body independently of each other. The method of claim 7, wherein The first vibrating body and the second vibrating body, the vibration generating device having a straight spring. The method of claim 8, The straight spring is a vibration generating device is formed with a bending portion is bent in the '┐' shape. The method of claim 7, wherein And a frequency of power supplied to the first vibrator and the second vibrator. The method of claim 7, wherein The vibration generating device, the vibration generating device having at least three or more rated vibration amount in accordance with the change in the frequency of the power supplied from the controller.

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