KR102604642B1 - Sound wave vibrator - Google Patents

Abstract

According to one embodiment, the sonic vibrator includes a housing; a coil installed in the housing to form a magnetic field in the height direction of the housing by an applied voltage; a moving body capable of vibrating in the height direction of the housing by a magnetic field formed by the coil; a leaf spring installed between the housing and the moving body and elastically deformable according to the movement of the moving body; and a support block installed between the leaf spring and the moving body to separate the moving body from the leaf spring, wherein the height of the support block is set to be equal to or greater than the maximum amplitude of the moving body. , It is possible to prevent the moving body from colliding with the leaf spring during the vibration process of the moving body.

Description

Sound wave vibrator {SOUND WAVE VIBRATOR}

The description below relates to a sound wave oscillator, and according to one embodiment, damage to the leaf spring can be prevented and the cause of noise generation can be eliminated.

A vibrator is a device that periodically reciprocates. For example, one can think of an object hanging on a spring and reciprocating due to the elastic force of the spring, or a weight hanging on a string and reciprocating due to gravity.

A sound wave oscillator, one of several types of oscillators, has attractive and repulsive forces depending on the relationship between the magnetic field formed by a magnet and the magnetic field formed by the coil when a sinusoidal driving signal (voltage) is applied to the coil. It has a structure in which the magnet vibrates up and down by acting alternately.

Such sound wave oscillators can be miniaturized to a small size, and in recent years, various products made using such sound wave oscillators exist. For example, sonic vibrators are applied to various products such as mattresses, cushions, pillows, and various exercise equipment.

KR 10-2179266 B1

The purpose of one embodiment is to provide a sound wave oscillator that can prevent damage to leaf springs and eliminate the cause of noise generation.

According to one embodiment, the sonic vibrator includes a housing; a coil installed in the housing to form a magnetic field in the height direction of the housing by an applied voltage; a moving body capable of vibrating in the height direction of the housing by a magnetic field formed by the coil; a leaf spring installed between the housing and the moving body and elastically deformable according to the movement of the moving body; and a support block installed between the leaf spring and the moving body to separate the moving body from the leaf spring, wherein the height of the support block is set to be equal to or greater than the maximum amplitude of the moving body. , It is possible to prevent the moving body from colliding with the leaf spring during the vibration process of the moving body.

The support block may be formed integrally with the leaf spring.

The leaf spring includes an upper leaf spring located on the upper side of the moving body, and a lower leaf spring located on a lower side of the moving body, and the support block includes an upper plate support block located between the upper spring and the moving body, and It includes a lower plate support block located between a lower plate spring and the moving body, and the central position of the coil may be deviated from the central position between the upper plate support block and the lower plate support block based on the height direction of the housing. .

The housing includes an outer housing that forms the exterior of the sound wave vibrator; and an inner housing installed inside the outer housing and sequentially arranged along the height direction of the outer housing to accommodate the upper plate spring, the upper plate support block, the moving body, the lower plate support block, and the lower plate spring. And, on the inner surface of the inner housing, (i) the coil is shifted to one side along the height direction of the outer housing, and (ii) the coil is disposed in a space in the inner housing where the coil is not located. An excursion block may be installed to support.

The leaf spring has a central portion; an edge portion spaced outward from the central portion; and a connecting portion connecting the central portion and the edge portion to each other, wherein the housing includes: an inner housing provided with an upper step portion capable of accommodating at least a portion of the edge portion; and an end plate fixed to the upper side of the inner housing to prevent the edge portion accommodated in the upper step portion from being separated from the upper step portion.

According to one embodiment, by preventing a moving object vibrating inside the sound wave vibrator from colliding with the leaf spring, damage to the leaf spring can be prevented, thereby improving the durability of the entire sound wave vibrator.

According to one embodiment, the sound wave vibrator prevents the problem of the moving object vibrating inside hitting the leaf spring, thereby eliminating the cause of noise generation, enabling quieter use.

According to one embodiment, the support block that supports the leaf spring of the sonic vibrator is formed integrally with the leaf spring, thereby simplifying the assembly process and improving product quality.

According to one embodiment, the intensity of vibration is strengthened through the coil deviation structure, and as a result, a sound wave oscillator with excellent efficiency can be provided.

According to one embodiment, the upper spring and the lower spring can be easily assembled without a separate bonding process through the structure of the step portion formed in the inner housing, and thus the convenience of assembly and maintenance can be greatly improved.

1 is a perspective view of a sound wave oscillator according to an embodiment.
Figure 2 is an exploded perspective view of a sound wave oscillator according to an embodiment.
Figure 3 is a cross-sectional view of a sound wave oscillator according to an embodiment.
Figure 4 is a bottom perspective view of the outer housing according to one embodiment.
Figure 5 is a bottom perspective view of the inner housing according to one embodiment.
Figure 6 is a diagram showing a shaft according to one embodiment.
Figure 7 is a bottom perspective view of an upper plate spring according to an embodiment.
Figure 8 is a top perspective view of an upper plate spring according to an embodiment.

Hereinafter, embodiments will be described in detail through illustrative drawings. When adding reference numerals to components in each drawing, it should be noted that identical components are given the same reference numerals as much as possible even if they are shown in different drawings. Additionally, when describing an embodiment, if a detailed description of a related known configuration or function is judged to impede understanding of the embodiment, the detailed description will be omitted.

Additionally, in describing the components of the embodiment, terms such as first, second, A, B, (a), and (b) may be used. These terms are only used to distinguish the component from other components, and the nature, sequence, or order of the component is not limited by the term. When a component is described as being "connected," "coupled," or "connected" to another component, that component may be directly connected or connected to that other component, but there is no need for another component between each component. It should be understood that may be “connected,” “combined,” or “connected.”

Components included in one embodiment and components including common functions will be described using the same names in other embodiments. Unless stated to the contrary, the description given in one embodiment may be applied to other embodiments, and detailed description will be omitted to the extent of overlap.

FIG. 1 is a perspective view of a sound wave oscillator according to an embodiment, FIG. 2 is an exploded perspective view of a sound wave oscillator according to an embodiment, and FIG. 3 is a cross-sectional view of a sound wave oscillator according to an embodiment.

Referring to FIGS. 1 to 3 , the sound wave vibrator 100 according to one embodiment may provide vibration to the user through the moving body 140 that vibrates by the magnetic field formed by the coil 180.

In this way, the sound wave oscillator 100, which operates by a magnetic field, can be miniaturized to a small size and can be applied to various products such as mattresses, cushions, pillows, and various exercise equipment. Meanwhile, it should be noted that this is only an example, and the products to which the sonic vibrator 100 is applied are not necessarily limited in this way.

The sonic vibrator 100 includes a housing 110, 120, 130, a moving body 140, a leaf spring 150, 160, a support block 155, 165, a shaft 170, a coil 180, and a deviation block ( 185), it may include an upper bolt 192 and a lower bolt 194.

The housings 110, 120, and 130 may accommodate other components and provide a space for the moving body 140 to vibrate. The housings 110, 120, and 130 may include an outer housing 110, an inner housing 120, and an end plate 130.

The outer housing 110 may form the exterior of the sound wave vibrator 100. The outer housing 110 may include a side surface 111, a flange 112, and a lower surface 113.

The flange 112 of the outer housing 110 is a portion that protrudes outward from the top of the side 111 of the outer housing 110.

The side surface 111 of the outer housing 110 may be spaced apart from the side surface 121 of the inner housing 120. According to this structure, it is possible to prevent the problem of heat generated from the coil 180 installed in the inner housing 120 being directly transferred to the user's hands. Additionally, the coil 180 may be air-cooled using air flowing through the space between the side surface 111 of the outer housing 110 and the side surface 121 of the inner housing 120.

The lower surface 113 of the outer housing 110 may be spaced apart from the lower end of the side surface 121 of the inner housing 120. According to this structure, it is possible to prevent the problem of the downward movement of the moving body 140 being interfered with by the lower surface 113 of the outer housing 110.

The inner housing 120 may be installed inside the outer housing 110. The inner housing 120 provides a space where the moving body 140 and the coil 180 are arranged.

Inside the inner housing 120, an upper plate spring 150, an upper plate support block 155, a moving body 140, a lower plate support block 165, and a lower plate spring 160 are accommodated, which are located in the outer housing 110. It can be arranged sequentially from the top along the height direction. Additionally, a coil 180 and a deviation block 185 may be installed on the inner surface of the inner housing 120.

The inner housing 120 may include a side surface 121, a flange 122, an upper step 124, and a lower step 126.

The flange 122 of the inner housing 120 is a part that protrudes outward from the top of the side 121 of the inner housing 120 and is attached to the flange 112 and/or the end plate 130 of the outer housing 110. can be combined The flange 122 of the inner housing 120 may be located between the flange 112 of the outer housing 110 and the end plate 130, as shown. The two flanges 112 and 122 and the end plate 130 may be assembled to be in close contact with each other through coupling means such as screws (not shown).

The upper step portion 124 is recessed from the flange 122 of the inner housing 120 and can accommodate at least a portion of the edge portion 152 of the upper plate spring 150.

The lower step portion 126 is a portion that protrudes inward from the bottom of the side surface 121 and can support the edge portion of the lower plate spring 160.

According to the structure of the upper step portion 124, the lower step portion 126, and the end plate 130, which will be described later, the moving body 140 and the plate are connected through a simple fitting coupling structure rather than by a coupling method such as bonding. Springs 150 and 160 may be fixed within housings 110, 120 and 130. Therefore, convenience can be significantly increased during assembly and maintenance processes.

By being fixed to the upper side of the inner housing 120, the end plate 130 can prevent the edge portion 152 accommodated in the upper step portion 124 from being separated from the upper step portion 124. The end plate 130 may have a donut shape with a hollow interior so as not to impede the upward movement of the moving body 140. The end plate 130 may have a ring shape with a width corresponding to the flange 122 of the inner housing 120.

The moving body 140 may vibrate in the height direction of the housings 110, 120, and 130 by the magnetic field formed by the coil 180. The moving body 140 may include a magnet 141, an upper magnet protection plate 142, and a lower magnet protection plate 143.

The magnet 141 may be arranged to form a magnetic field in the height direction of the housings 110, 120, and 130. Between the magnet 141 and the coil 180, depending on the relationship between the magnetic field formed by the magnet 141 and the magnetic field formed by the coil when a sinusoidal driving signal (voltage) is applied to the coil 180. In this case, attractive and repulsive forces act alternately. Accordingly, the magnet 141 may vibrate up and down along the height direction of the housings 110, 120, and 130.

The upper magnet protection plate 142 may be located between the upper side of the magnet 141 and the upper plate support block 155. For example, the upper magnet protection plate 142 may have a diameter larger than the diameter of the magnet 141. According to the upper magnet protection plate 142, it is possible to prevent the magnet 141 from being damaged by direct contact with the outside.

The lower magnet protection plate 143 may be located between the lower side of the magnet 141 and the lower plate support block 165. Unless stated to the contrary, it should be noted that the description of the upper magnetic protection plate 142 can also be applied to the lower magnetic protection plate 143.

The leaf springs 150 and 160 are installed between the housings 110, 120, and 130 and the moving body 140 and can be elastically deformed according to the movement of the moving body 140. For example, the leaf springs 150 and 160 may be formed of a material other than a magnetic material, such as a non-ferrous metal or synthetic resin (eg, acetal, PE or PC).

The leaf springs 150 and 160 may include an upper leaf spring 150 located on the upper side of the moving body 140 and a lower leaf spring 160 located on the lower side of the moving body 140.

As shown in FIG. 3, the diameter of the upper plate spring 150 is formed to be larger than the diameter of the lower plate spring 160, so that it can be accommodated and assembled in the upper step portion 124 described above. The upper spring 150 and the lower spring 160 may be formed in shapes that are symmetrical to each other, and unless otherwise stated, the description of the upper spring 150 can also be applied to the lower spring 160. put it

The support blocks 155 and 165 may be installed between the leaf springs 150 and 160 and the moving body 140 to keep the moving body 140 spaced apart from the leaf springs 150 and 160. The support blocks 155 and 165 include an upper support block 155 located between the upper plate spring 150 and the moving body 140, and a lower plate supporting block 165 located between the lower plate spring 160 and the moving body 140. ) may include. The upper plate support block 155 and the lower plate support block 165 may be formed in shapes that are symmetrical to each other as shown.

For example, the support blocks 155 and 165 may be formed integrally with the leaf springs 150 and 160. In this way, when the support blocks 155 and 165 are formed integrally with the leaf springs 150 and 160, the convenience of assembly can be increased as the number of assembled parts is reduced, and errors in the manufacturing process can be reduced. In addition, it has the advantage of fundamentally preventing problems such as noise and tolerance due to clearance that may exist between two adjacent parts.

Meanwhile, it should be noted that instead of forming the support blocks 155 and 165 integrally with the leaf springs 150 and 160, it is also possible to form them integrally with a portion of the shaft 170 shown in FIG. 3. However, in this case, within the hollow formed in the moving body 140, the upper part (upper part of the upper support block 155 and the shaft 170) and the lower part (lower part of the lower support block 165 and the shaft 170) Since a structure in which parts) are interlocked must be provided, the difficulty of manufacturing each part increases significantly compared to the illustrated embodiment. In addition, as the difficulty of manufacturing increased, there was a problem that manufacturing tolerances increased more than expected. Therefore, as shown, it is better to provide an upper support block 155 and a lower support block 165 that are fitted in the same shape on both sides around one shaft 170 of a simple shape, in terms of manufacturing cost and effort. can have an advantage.

Meanwhile, it should be noted that the support blocks 155 and 165 and the leaf springs 150 and 160 may be formed as separate parts and assembled.

Meanwhile, the vertical vibration of the moving body 140 is transmitted to the leaf springs 150 and 160 through the support blocks 155 and 165, and the moving body 140 includes the leaf springs 150 and 160 and the support blocks 155, 165) and vibrates in the vertical direction. At this time, the vertical vibration distance (amplitude) depends on various factors (e.g., the length of the connection part 153 (see FIG. 8), the material of the leaf springs 150 and 160, the strength of the voltage applied to the coil 180, and the magnet 141 ) can be determined by the magnetic force strength, etc.).

If the intended amplitude is larger than the vertical width of the support blocks 155 and 165, the edge portion of the upper magnetic protection plate 142 is the most opposite to the surface of the upper plate spring 150 during the upward vibration of the moving body 140. It hits the seat, and during the downward vibration of the moving body 140, the edge of the lower magnet protection plate 143 collides with the edge of the facing surface of the lower plate spring 160, causing noise and damage to the magnet 141. etc. will occur.

To solve this problem, the height of the support blocks 155 and 165 may be set to be equal to or greater than the maximum amplitude of the moving body 140. According to this structure, it is possible to prevent the moving body 140 from colliding with the leaf springs 150 and 160 during the vibration process of the moving body 140.

The shaft 170 penetrates the leaf springs 150 and 160, the support blocks 155 and 165, and the moving body 140, and can ensure that they are aligned in the correct position. At both ends of the shaft 170, upper bolts 192 and lower bolts 194 each have heads with diameters larger than the diameter of the hole formed in the upper plate spring 150 and the diameter of the hole formed in the lower plate spring 160. It can be.

The coil 180 may be installed in the housings 110, 120, and 130 to form a magnetic field in the height direction of the housings 110, 120, and 130 by an applied voltage. For example, the coil 180 may be provided in the form of a wire wound and covered with a protective wrap. The coil 180 may be attached to the inner surface of the inner housing 120 by a bonding method or the like.

For example, the coil 180 may be shifted to one side along the height direction of the outer housing 110 as shown in FIG. 3 . In other words, the central position of the coil 180 is the central position between the upper support block 155 and the lower support block 165 (in other words, the magnet ( 141) can be arranged to be deviated from the center position). For example, the entire height direction length of the coil 180 is smaller than the height direction length of the inner housing 120, and the coil 180 may not be disposed below the inner housing 120.

In this way, if the central position of the coil 180 is arranged to deviate from the central position of the magnet 141, the direction of the force applied to the magnet 141 by the magnetic force formed by the coil 180 is the direction of the magnet 141. It is formed in a direction close to the direction of vibration (up and down), so that a greater force can be applied to the magnet 141 in the direction of vibration. Additionally, compared to the case where the coil is formed to cover the entire inner surface of the inner housing 120, an equal or greater force can be applied to the magnet 141 while reducing the amount of coil material.

Meanwhile, it should be noted that instead of the coil 180, the moving body 140 may be arranged to be deviated in the height direction with respect to the inner housing 120. However, the center position of the moving body 140 is arranged to coincide with the center position of the inner housing 120 so that the moving body 140 can secure the maximum amplitude in the limited internal space of the inner housing 120. It is advantageous in terms of miniaturization and improved vibration performance.

The deviation block 185 may be disposed in a space where the coil 180 is not located within the inner housing 120 to support the coil 180. For example, the deviation block 185 may be formed of a non-magnetic material such as synthetic resin (eg, acetal).

The upper bolt 192 may secure the upper spring 150 so that the upper spring 150 does not separate from the shaft 170.

The lower bolt 194 may secure the lower plate spring 160 so that the lower plate spring 160 does not separate from the shaft 170.

Meanwhile, the upper plate support block 155, the moving body 140, and the lower plate support block 165 are disposed between the upper plate spring 150 and the lower plate spring 160, and as a result, the upper bolt 192 and the lower bolt 194 ), the upper plate spring 150, the upper plate support block 155, the moving body 140, the lower plate support block 165, and the lower plate spring 160 can be prevented from being separated from the shaft 170. In this state, the edge portion of the upper plate spring 150 is inserted into the upper step portion 124 and can be prevented from being separated outward by the end plate 130. According to the above structure, it is possible to assemble the sonic vibrator 100 without using a coupling method such as bonding, and thus the operator's convenience in assembly can be significantly improved.

Figure 4 is a bottom perspective view of the outer housing according to one embodiment, and Figure 5 is a bottom perspective view of the inner housing according to one embodiment.

First, referring to FIG. 4, the outer housing 110 according to one embodiment may include a side surface 111, a flange 112, and a lower surface 113.

A plurality of holes radially spaced apart may be formed on the side surface 111 and the bottom surface 113 of the outer housing 110. Such holes help dissipate heat generated in the coil 180.

Next, referring to FIG. 5 , the inner housing 120 according to one embodiment may include a side surface 121, a flange 122, and a lower step portion 126.

Likewise, a plurality of radially spaced holes may be formed on the side surface 121 of the inner housing 120, and these holes help dissipate heat generated in the coil 180.

Meanwhile, in the case of the inner housing 120, other than the lower step portion 126, the remaining portion of the lower side has an open shape. According to this shape, it is possible to prevent the problem of interference with the movement of the lower plate spring 160 as much as possible and have a superior heat dissipation effect.

Meanwhile, when the outer housing 110 and the inner housing 120 are combined, the holes formed on the side surfaces of each housing 110 and 120 may be arranged to stagger each other when viewed from the side. According to this shape, it is possible to prevent the problem of reducing the durability of the entire acoustic wave oscillator 100 due to forming an unnecessarily large number of holes, while providing relatively uniform radial heat dissipation performance.

Figure 6 is a diagram showing a shaft according to one embodiment.

Referring to FIG. 6, the shaft 170 according to one embodiment may have a cylindrical outer surface. On the inner surface of the shaft 170, an upper female thread portion 171 to which the upper bolt 192 is coupled and a lower female thread portion 172 to which the lower bolt 194 is coupled may be formed.

According to the shaft 170, the component parts between the upper spring 150 and the lower spring 160, including the magnet 141, can be fastened to each other without forming a female thread directly on the magnet 141, which is difficult to process. You can.

For example, the shaft 170 may be formed integrally with other adjacent parts, for example, the upper support block 155 or the lower support block 165. However, when considering the convenience and manufacturing precision of each component, it may be more advantageous to assemble them into simple shapes as is currently the case.

Figure 7 is a bottom perspective view of an upper plate spring according to an embodiment, and Figure 8 is a top perspective view of an upper plate spring according to an embodiment.

Referring to Figures 7 and 8, the top spring 150 according to one embodiment includes a central portion 151, an edge portion 152 spaced outward from the central portion 151, a connecting portion 153, and a reinforcing portion 154. ) may include.

The connecting portion 153 may connect the central portion 151 and the edge portion 152 to each other. For example, the connection portion 153 may be formed in a curved shape rather than a straight line, so that the overall length may be longer than the distance between the central portion 151 and the edge portion 152. In other words, when there is a right triangle with the distance between the center portion 151 and the edge portion 152 as the “base” and the amplitude of the moving body 140 as the “height,” the connection portion 153 is, It may have a length equal to or greater than the distance of the “hypotenuse” of the above-described right triangle.

For example, the connection portion 153 may have a shape that is bent multiple times. According to this structure, the maximum movable distance of the center portion 151 compared to the edge portion 152 can be further increased. As the maximum moving distance increases in this way, the sonic vibrator 100 can generate stronger vibration.

For example, the thickness of the connecting portion 153 may be thicker than the thickness of the central portion 151 and the edge portion 152.

The reinforcement portion 154 functions to reinforce a portion of the upper plate spring 150 that is vulnerable to fatigue failure. The reinforcement portion 154 can be understood as a portion that protrudes from one or more of the central portion 151, the edge portion 152, and the connecting portion 153. Based on the direction of movement of the moving body 140, the thickness of the portion of the upper plate spring 150 where the reinforcement portion 154 is formed may be thicker than the portion where the reinforcement portion 154 is not formed. According to the reinforcement portion 154, the cross-sectional area of the member can be increased to reduce the load value for repeated loading, and as a result, the durability of the entire top spring 150 can be improved.

The reinforcement portion 154 may include a center side reinforcement portion 1541 and an edge side reinforcement portion 1542.

The central reinforcement portion 1541 may be formed at a portion where the central portion 151 and the connecting portion 153 are connected to each other. For example, the central reinforcement portion 1541 may be formed across the central portion 151 and the connection portion 153. According to the central reinforcement portion 1541, the problem of the connection portion 153 being cut from the central portion 151 can be significantly reduced. The cross-sectional area of the end portion of the central reinforcement portion 1541 toward the central portion 151 may decrease toward the central portion 151.

The edge side reinforcement portion 1542 may be formed at a portion where the edge portion 152 and the connection portion 153 are connected to each other. For example, the edge side reinforcement portion 1542 may be formed across the edge portion 152 and the connection portion 153. According to the edge side reinforcement portion 1542, the problem of the connection portion 153 being cut from the edge portion 152 can be significantly reduced. The cross-sectional area of the end portion of the edge side reinforcement portion 1542 facing the edge portion 152 may decrease toward the edge portion 152.

Meanwhile, as shown in FIG. 8, the center side reinforcement part 1541 and the edge side reinforcement part 1542 are formed to be spaced apart from each other, and the reinforcement part 154 may not be formed between them. According to this structure, the problem of weakening the effect of vibration and wasting material can be prevented as additional material is added to an area where reinforcement is relatively unnecessary (e.g., the central area of the connection portion 153).

For example, the reinforcement parts 1541 and 1542 are biased closer to the inside (i.e., closer to the large curvature part) than the outside of the bent part of the connection part 153, based on the width direction of the connection part 153. can be located (see Figure 8). According to this structure, material consumption can be reduced in preparation for the case where material is reinforced across the entire width direction of the connecting portion 153. In addition, this structure is designed to selectively reinforce the weakest part (i.e., the part where stress is most concentrated) in consideration of the notch effect, so that substantially all of the connection portion 153 in the width direction is The product lifespan can be expected to improve to a level similar to that of reinforcement. Furthermore, as the cross-sectional area of the connection portion 153 becomes wider, the intensity of the vibration formed by the sound wave vibrator 100 becomes weaker. By reducing this negative effect as much as possible, the sound wave vibrator 100 under the same conditions The driving efficiency can be improved.

Unless otherwise stated, the description of the upper spring 150 may also be applied to the lower spring 160. The lower plate spring 160 may also include the above-described central portion, edge portion, connection portion, and reinforcement portion. A detailed description of the lower plate spring 160 will be omitted.

As described above, although the embodiments have been described with limited drawings, various modifications and variations can be made by those skilled in the art from the above description. For example, the described techniques may be performed in a different order than the described method, and/or components of the described structure, device, etc. may be combined or combined in a form different from the described method, or may be used with other components or equivalents. Appropriate results can be achieved even if replaced or substituted by .

100: Sonic oscillator
110: outer housing
111: side
112: Flange
113: If you do
120: inner housing
121: side
122: Flange
124: Upper step part
126: Lower step part
130: End plate
140: moving body
141: magnet
142: Upper magnetic protection plate
143: Lower magnetic protection plate
150: Top spring
151: Central part
152: Edge part
153: connection part
154: reinforcement part
1541: Central side reinforcement part
1542: Edge side reinforcement part
155: Top support block
160: Lower plate spring
165: Lower plate support block
170: shaft
171: Upper female thread part
172: Lower female thread part
180: coil
185: Deviation block
192: upper bolt
194: lower bolt

Claims (5)

housing;
a coil installed in the housing to form a magnetic field in the height direction of the housing by an applied voltage;
a moving body capable of vibrating in the height direction of the housing by a magnetic field formed by the coil;
a leaf spring installed between the housing and the moving body and elastically deformable according to the movement of the moving body; and
It includes a support block installed between the leaf spring and the moving body to separate the moving body from the leaf spring,
The height of the support block is set to be equal to or greater than the maximum amplitude of the moving body, thereby preventing the moving body from colliding with the leaf spring during the vibration of the moving body,
The leaf spring includes an upper leaf spring located on the upper side of the moving body and a lower leaf spring located on the lower side of the moving body,
The support block is located between the upper plate spring and the moving body, but is formed integrally with or separate from the upper plate spring, and the upper plate support block is located between the lower plate spring and the moving body, but is integral with or separate from the lower plate spring. It includes a lower plate support block formed,
The central position of the coil is deviated from the central position between the upper plate support block and the lower plate support block based on the height direction of the housing,
The housing is,
An outer housing forming the exterior of the sound wave oscillator; and
Installed on the inside of the outer housing and sequentially arranged along the height direction of the outer housing, it includes an inner housing accommodating the upper plate spring, the upper plate support block, the moving body, the lower plate support block, and the lower plate spring; ,
On the inner surface of the inner housing, (i) the coil is shifted to one side along the height direction of the outer housing, and (ii) is disposed in a space where the coil is not located within the inner housing to support the coil. A sound wave oscillator, characterized in that an excursion block is installed to do this. According to claim 1,
Each of the upper spring and the lower spring,
central part;
an edge portion spaced outward from the central portion; and
It includes a connection part connecting the central part and the edge part to each other,
The inner housing is provided with an upper step portion capable of accommodating at least a portion of the edge portion of the upper plate spring,
An end plate is fixed to the upper side of the inner housing to prevent the edge portion accommodated in the upper step portion from being separated from the upper step portion,
A sound wave vibrator having a lower stepped portion that protrudes inward from a lower side of the inner housing and supports an edge portion of the lower plate spring. delete delete delete