Sound wave vibration device having slim structure

Abstract

Disclosed is a sound wave vibration device having a slim structure. The sound wave vibration device according to the present invention is a sound wave vibration device having a slim structure in which a magnet moves according to the amount of current of an acoustic signal applied to a wound coil, the sound wave vibration device being composed of an upper cover and a lower cover so as to have a cylindrical structure. The sound wave vibration device comprises: the magnet, which is installed at a distance from the inner side surface of the upper cover; a plate spring for fastening the magnet and the upper cover; and the wound coil, which is installed at a distance downward from the magnet and generates a magnetic field, corresponding to the acoustic signal, in the magnet, thereby inducing an up-down movement of the magnet. Therefore, the present invention has the effect of minimizing the thickness of a sound wave vibrator and thus increasing the utility of the sound wave vibration device. In addition, the present invention has the effect that vibration patterns for inducing vibrations corresponding to sound wave signals can be induced as up-down movement to strengthen the vibrational force.

Description

Ultrasonic vibration device with a slim structure

[0001] The present invention relates to an ultrasonic vibration device, and more particularly, to an ultrasonic vibration device having a slim structure that can increase the efficiency of ultrasonic vibration by inducing a magnet to vibrate in a vertical direction.

[0002] In general, the various stresses of daily life lead to various ailments such as muscle stiffness, chronic fatigue, and muscle cramps. To relieve these muscle stiffness and nerve fatigue, the number of people receiving massage has been increasing. Traditional massage involves applying pressure to parts of the body using hands or tools.

[0003] As the number of people receiving massages continues to increase, various massage machines are being developed that utilize machines rather than humans to provide the massage. Examples of massage machines include massage chairs, calf massagers, and foot massagers. These massage machines typically utilize vibration driven by motors or actuators. Recently, mats have been developed that incorporate vibration devices within the heated mat to induce both heat and vibration.

[0004] As in the attached registered patent, the sonic vibration heating mat includes at least one heating plate and at least one sonic vibrator, wherein the heating plate generates heat and the sonic vibrator generates vibration. Here, the sonic vibration heating mat generates vibration using the sonic vibrator rather than vibration by a motor. The sonic vibrator generates vibration by converting current into sonic vibration caused by the up-and-down movement of the permanent magnet by applying current to a voice coil located within the magnetic field of a permanent magnet. The vibration generated by the sonic vibrator is transmitted to a user lying on the sonic vibration heating mat, and relaxes the user's mind and body.

[0005] That is, as shown in Fig. 1, the sonic vibration heating mat (1) includes a cover (11), at least one heating plate (12), a temperature sensor (13), a cushion panel (14), at least one sonic vibrator (20), and a control box (15). The cover (11) is a rectangular case with an open lower surface, and a heating plate (12), a temperature sensor (13), a cushion panel (14), at least one sonic vibrator (20), and a control box (15) are arranged inside. The upper surface of the cover (11) that comes into contact with the user's body can be made of artificial leather, natural leather, or the like.

[0006] The heating plate (12) is formed in the shape of a rectangular flat plate that generates heat. The heating plate (12) includes a rectangular flat plate and a heating wire embedded within the rectangular flat plate. The heating wire is a wire that generates heat. Generally, the heating plate (12) is manufactured from a metal with high thermal conductivity to effectively transfer the heat generated from the heating wire. The temperature sensor (13) is placed at the bottom of the heating plate (12) and detects the temperature of the heating plate (12).

[0007] The cushion panel (14) supports the user's body. At least one sonic vibrator (20) is built into the cushion panel (14). The cushion panel (14) includes an upper cushion panel (141) disposed between the heat transfer plate (12) and the sonic vibrator (20) and a lower cushion panel (142) surrounding the sonic vibrator (20). The upper cushion panel (141) is formed in the shape of a rectangular flat plate and is located at the lower portion of the heat transfer plate (12). The lower cushion panel (142) is formed in the shape of a rectangular flat plate and has at least one insertion groove formed at the center into which at least one sonic vibrator (20) is inserted. The lower cushion panel (142) is located at the lower portion of the upper cushion panel (141). The lower cushion panel (142) fixes the sonic vibrator (20) inserted into the insertion groove at the center. The upper cushion panel (141) and the lower cushion panel (142) are manufactured from materials such as urethane foam, expanded polypropylene (EPP), etc.

[0008] However, since the mat is supported on the ground due to its usage characteristics, installing multiple sonic vibrators in a conventional cushion panel like this poses many challenges in installing the sonic vibrators in the form of pads such as cushions due to their considerable thickness. In other words, there is a need to improve the physical structure of the sonic vibrators for installation inside cushions to increase their usability.

[0009] (Prior art literature)

[0010] Korean Patent No. 10-2179265, date of registration: November 10, 2020, title of invention: 'Sonic vibration heating mat using an acoustic actuator'

[0011]

[0012] The present invention was created to solve such problems, and the purpose of the present invention is to provide a sonic vibration device having a slim structure that can increase the usability of the sonic vibration device by minimizing the thickness of the sonic vibration device.

[0013] Another object of the present invention is to provide a sonic vibration device having a slim structure capable of strengthening vibration force by inducing a vibration pattern of a magnet to induce vibration corresponding to a sonic signal in an up-and-down motion.

[0014] In order to achieve the above object, the present invention provides a slim-structured sonic vibration device in which a magnet flows according to the current amount of an acoustic signal applied to a winding coil, the slim-structured sonic vibration device comprising an upper cover and a lower cover having a predetermined shape and corresponding to each other, a magnet spaced apart from an inner surface of the upper cover; a plate spring for fastening between the magnet and the upper cover; and a winding coil spaced apart from the lower portion of the magnet to form a magnetic field corresponding to an acoustic signal with the magnet to induce an up-and-down movement of the magnet.

[0015] In addition, the magnet is characterized in that the cross-section has a circular or polygonal structure, and the winding coil is wound in a circular or polygonal structure to correspond to the magnet.

[0016] In addition, the winding coil according to the present invention is characterized in that it is a spiral coil having a flat spiral structure so as to be wound horizontally with the magnet.

[0017] In addition, the coil impedance of the winding coil according to the present invention is 4 ohms or 8 ohms, and is characterized in that it is wound corresponding to the diameter of the magnet.

[0018] In addition, the plate spring according to the present invention includes a pressure projection protruding from the inner side, and is characterized in that the pressure projection is bent in a vertical direction when the magnet is inserted and fixed, thereby pressurizing and fixing the side surface of the magnet.

[0019] In addition, the plate spring according to the present invention is characterized in that it forms an annular structure so that a magnet is introduced into the inside, a rib extends to the outer surface of the annular structure to induce a predetermined elastic force, and a fixing groove is provided at the end of the rib to be fastened to the upper cover.

[0020] In addition, according to the present invention, the weight of the magnet (231) and the transverse elasticity coefficient (G) of the plate spring (241) have a proportional relationship, and when the weight of the magnet (231) is 60 g to 80 g, the transverse elasticity coefficient (G) of the plate spring (241) is designed to be 60 X 103 N / mm2 to 70 X 103 N / mm2.

[0021] The slim-structured sonic vibration device proposed in the present invention has the effect of minimizing the thickness of the sonic vibration device, thereby enhancing its usability. Furthermore, it provides the effect of strengthening the vibration force by inducing the magnetic vibration pattern corresponding to the sonic signal through an up-and-down movement.

[0022] Figure 1 is a schematic diagram illustrating a mat equipped with a conventional sonic vibrator.

[0023] Figure 2 is a perspective view illustrating an ultrasonic vibration device having a slim structure according to the present invention.

[0024] Figure 3 is a schematic diagram showing a cross-sectional view of an ultrasonic vibration device having a slim structure according to the present invention.

[0025] Figure 4 is an exploded perspective view of an ultrasonic vibration device having a slim structure according to the present invention.

[0026] Figure 5 is a cross-sectional view for explaining the operation of the present invention.

[0027] Hereinafter, a preferred embodiment of the present invention will be described in detail based on the attached exemplary drawings.

[0028] Figure 2 is a perspective view illustrating a sonic vibration device having a slim structure according to the present invention. As shown, a magnet and a coil are wound inside a housing (200) having a structure of a predetermined shape. The magnet is positioned at the top of the coil and is designed to be connected to a predetermined elastic body to ensure smooth vertical movement.

[0029] The housing (200) may be made of a metal material or may be molded from a polycarbonate material. It is preferable that the magnet be a neodymium magnet capable of increasing the strength of the magnetic force. The magnet is manufactured in a polygonal structure, including a circular shape, and the coil is wound to correspond to the shape of the magnet.

[0030] In addition, the elastic body is composed of 65% manganese material to provide restoring force against the vibration force of the magnet. The elastic body needs to have minimal influence on the magnetic force with the magnet and maintain elasticity without being influenced by the magnetic force.

[0031] Fig. 3 is a schematic diagram showing a cross-sectional view of an ultrasonic vibration device having a slim structure according to the present invention. As shown, the housing (200) is composed of an upper cover (211) and a lower cover (213), and is composed of a magnet (231) spaced apart from the inner surface of the upper cover (211), a plate spring (241) for fastening between the magnet (231) and the upper cover (211), and a winding coil (221) spaced apart from the lower side of the magnet (231) to form a magnetic field corresponding to an acoustic signal with the magnet (231) to induce up and down movement of the magnet (231).

[0032] The magnet (231) may be manufactured and molded into a circular cross-section or a polygonal structure including a square structure. Accordingly, the winding coil (221) is wound into a circular or polygonal shape corresponding to the molded structure of the magnet (231), so that the magnetic force induced from the winding coil (221) is sufficiently directed toward the magnet (231).

[0033] In addition, the winding coil (221) is wound horizontally with the magnet (231). The winding coil (221) has a spiral coil structure having a planar helical structure, and the coil impedance is maintained at 4 ohms or 8 ohms. The winding coil (221) is wound horizontally to correspond to the magnetic field area of ​​the magnet (231), and in the embodiment of the present invention, the magnet (231) has a diameter of 50 mm, and the winding diameter of the winding coil (221) is also close to 50 mm. The winding coil (221) can be wound in one stage or in two to three stages, which can be selected depending on the coil impedance and the diameter of the coil.

[0034] Fig. 4 is an exploded perspective view of an ultrasonic vibration device having a slim structure according to the present invention. As shown, a winding coil (221) is wound horizontally on the upper end of the lower cover (213), and the magnet (231) is inserted and fixed into the inner surface of a plate spring (241), and the magnet (231) is fixed by a pressure projection (243) protruding from the inner surface of the plate spring (241). The pressure projection (243) is bent in a vertical direction to press the side surface of the magnet (231) and fix it.

[0035] This is done by overlapping the magnet (231) and the plate spring (241) during the manufacturing process of the plate spring (241), and then pressing the plate spring (241) by means of a press, thereby forcibly fitting the magnet (231) along the inner surface of the plate spring (241), and in this process, the pressing projection (243) is bent.

[0036] The above-mentioned plate spring (241) has a ring-shaped structure so that a magnet (231) is introduced into the inside, and a rib (247) extends to the outer surface of the ring-shaped structure, and a fixing groove (245) is provided at the end of the rib (247). The rib (247) is intended to induce up-and-down vibration of the plate spring (241), and the length of the rib (247) is determined inversely proportional to the weight of the magnet (231), or in proportional to the elastic strength of the plate spring (241).

[0037] This is designed so that when the weight of the magnet (231) is large, the length of the rib (247) is shortened to control the vibration force according to the weight of the magnet (231). In addition, when the elastic strength of the plate spring (241) is high, the length of the rib (247) is increased to provide the vibration force of the magnet (231) so as to provide a smooth vibration force of the magnet (231).

[0038] According to the current applied to the winding coil (221), a magnetic force line is generated around the winding coil (221), and the magnetic force line of the coil and the magnetic field of the magnet (231) cause the magnet (231) to move up and down. Here, as the plate spring (241) fixes the upper cover (211) and the magnet (231) to each other, the up and down movement force of the magnet (231) vibrates the rib (247). This vibration force of the plate spring (241) is transmitted to the upper cover (211), so that the user can feel the vibration force of the magnet (231) corresponding to the sound wave signal.

[0039] Accordingly, this vibration force amplifies the vibration force of the magnet (231) by using the weight of the magnet (231) and the elasticity of the plate spring (241), and the amplification of the vibration force occurs differently depending on the material of the plate spring (241) and the length of the rib (247). For example, when the elastic coefficient of the plate spring (241) is very high or the rib (247) is designed to be short, the vibration force of the magnet (231) is directly transmitted to the upper cover (211) through the rib (247) of the plate spring (241).

[0040] That is, the micro-vibration of the magnet (231) is transmitted to the upper cover (211), and the amplitude of the vibration wave according to the vibration force is low, so the user's perception is reduced. On the other hand, when the hardness of the material of the plate spring (241) is very low or the length of the rib (247) is very long, the vibration force of the magnet (231) is absorbed by the plate spring (241), and the vibration wave is not transmitted to the upper cover (211), so the user's perception is reduced.

[0041] In the present invention, the magnet (231) has a diameter of 50 mm, a thickness of 5 mm, and a weight of 70 g, and the corresponding plate spring (241) is a plate spring made of 65 Mn and has a transverse elastic modulus (G) of 60 X 103 N / mm2 to 70 X 103 N / mm2. In addition, the ribs (247) are configured in four pieces and are set to a protruding length relative to the radius (R) of the magnet (231).

[0042] The weight of the magnet (231) applied in the present invention is approximately 70g, and since the material of the magnet, for example, a ferrite material, or a mega ferrite or neodymium magnet, can be used, the transverse elasticity coefficient (G) of the plate spring (241) is determined according to the weight of the magnet regardless of the material of the magnet. Accordingly, when the weight of the magnet (231) is 60g to 80g, the transverse elasticity coefficient (G) of the plate spring (241) should be designed to be 60 X 103 N / mm2 to 70 X 103 N / mm2.

[0043] Meanwhile, the magnet (231) is fixed along the inner surface of the plate spring (241) and is screw-connected to the upper cover (211) through a fixing groove (245) provided at the end of the rib (247). In addition, the magnet (231) is installed at a distance of approximately 3 mm to 5 mm from the winding coil (221), thereby securing a space corresponding to the vibration width of the magnet (231).

[0044] Figure 5 is a cross-sectional view for explaining the operation of the present invention. As shown in , when current flows counterclockwise on a plane in the winding coil (221), a magnetic field is generated in the left coil counterclockwise and in the right coil clockwise from the front of the drawing. Accordingly, since the magnet (231) has the N pole at the bottom and the S pole at the top, the magnet (231) generates an upward repulsive force. On the other hand, When the direction of the current flowing to the winding coil (221) changes as shown in , the magnetic force lines of the coil located on the left in the cross-section are generated in a clockwise direction in the direction of the drawing, and the coil located on the right is generated in a counterclockwise direction in the direction of the drawing. Accordingly, as the magnet (231) maintains the N pole downward in the drawing, an attractive force acts between the winding coil (221) and the magnet (231). In this way, the magnet (231) vibrates in the up-and-down direction according to the sound signal applied to the winding coil (221), thereby forming a vibration force by the sound signal.

Claims

1. In a slim-structured sonic vibration device in which magnet movement occurs according to the amount of current of an acoustic signal applied to a winding coil, It is composed of an upper cover (211) and a lower cover (213) having an arbitrary shape structure, and a magnet (231) installed spaced apart from the inner side of the upper cover (211); A plate spring (241) for fastening between the magnet (231) and the upper cover (211); An ultrasonic vibration device having a slim structure, characterized by comprising a winding coil (221) installed spaced apart from the lower portion of the magnet (231) to form a magnetic field corresponding to an acoustic signal with the magnet (231) and induce up-and-down movement of the magnet (231).

2. In paragraph 1, An ultrasonic vibration device having a slim structure, characterized in that the magnet (231) has a circular or polygonal cross-section, and the winding coil (221) is wound in a circular or polygonal structure to correspond to the magnet (231).

3. In paragraph 1, An ultrasonic vibration device having a slim structure, characterized in that the above-mentioned winding coil (221) is a spiral coil having a flat spiral structure so as to be wound horizontally with the magnet (231).

4. In paragraph 3, An ultrasonic vibration device having a slim structure characterized in that the coil impedance of the above-mentioned winding coil (221) is 4 ohms or 8 ohms and is wound corresponding to the diameter of the magnet (231).

5. In paragraph 1, An ultrasonic vibration device having a slim structure, characterized in that the above-mentioned plate spring (241) includes a pressure projection (243) protruding toward the inner side, and when the magnet (231) is inserted and fixed, the pressure projection (243) is bent in the vertical direction to pressurize and fix the side surface of the magnet (231).

6. In paragraph 1, An ultrasonic vibration device having a slim structure, characterized in that the above-mentioned plate spring (241) forms an annular structure so that a magnet (231) is introduced into the inside, a rib (247) extends to the outer surface of the annular structure to induce a predetermined elastic force, and a fixing groove (245) is provided at the end of the rib (247) to be fastened to the upper cover (211).

7. In any one of paragraphs 1 to 6, An ultrasonic vibration device having a slim structure, characterized in that the weight of the magnet (231) and the transverse elasticity coefficient (G) of the plate spring (241) have a proportional relationship, and when the weight of the magnet (231) is 60 g to 80 g, the transverse elasticity coefficient (G) of the plate spring (241) is designed to be 60 X 103 N / mm2 to 70 X 103 N / mm2.

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