Vehicle-mounted vibrator

Abstract

The utility model belongs to the technical field of vibrators, and discloses a vehicle-mounted vibrator, which comprises a shell, a support assembly, a magnetic circuit system, a heat dissipation structure and a voice coil, and is characterized in that the support assembly is connected in the shell; the magnetic circuit system is arranged in the shell and bonded to the supporting assembly through colloid, and the magnetic circuit system is provided with a magnetic gap; the heat dissipation structure is arranged on one side of the magnetic circuit system, and the heat dissipation structure is in contact with the magnetic circuit system and is used for absorbing heat of the magnetic circuit system; the voice coil is arranged in the shell, one end of the voice coil is inserted into the magnetic gap, and the other end of the voice coil is connected to the shell. The vehicle-mounted vibrator provided by the utility model has higher connection strength and reliability and longer service life.

Description

TECHNICAL FIELD

[0001] The utility model relates to vibrator technical field especially relates to a vehicle-mounted vibrator. BACKGROUND

[0002] The vibrator can be used in cooperation with a loudspeaker and the like, and can provide low-frequency power and a shocking effect. For example, when the loudspeaker is playing music, the vibrator can be introduced when the music is low-frequency, such as drum sound, to realize music rhythm. Vehicles are also equipped with vibrators to provide low-frequency vibration, cooperate with the loudspeaker of the vehicle's sound system, and can create a 4D effect.

[0003] In the prior art, the vibrator includes a voice coil and a magnetic circuit system for providing a magnetic field for the voice coil. The voice coil is specifically a winding. After the voice coil is electrified, electromagnetic induction is generated in cooperation with the magnetic field of the magnetic circuit system, and the voice coil reciprocates axially to output low-frequency vibration. The vibrator further includes a shell and a support piece arranged in the shell. The magnetic circuit system is adhered to the support piece to achieve fixation. However, since the magnetic circuit system is arranged close to the voice coil, the temperature of the voice coil is relatively high after electrification, which causes the temperature of the magnetic circuit system to be relatively high as well. The glue is prone to failure under high temperature, thereby affecting the adhesion effect and reliability of the magnetic circuit system and the support piece, resulting in premature failure of the vibrator and short service life of the vibrator.

[0004] Therefore, there is an urgent need for a vehicle-mounted vibrator with high reliability. UTILITY MODEL CONTENTS

[0005] The utility model aims to provide a vehicle-mounted vibrator with high connection strength and reliability and long service life.

[0006] According to the above idea, the technical scheme adopted by the utility model is as follows:

[0007] A vehicle-mounted vibrator is provided, which includes:

[0008] a shell;

[0009] a support assembly connected in the shell;

[0010] a magnetic circuit system arranged in the shell and adhered to the support assembly by glue, the magnetic circuit system having a magnetic gap;

[0011] a heat dissipation structure arranged on one side of the magnetic circuit system, the heat dissipation structure being in contact with the magnetic circuit system and used for absorbing heat of the magnetic circuit system;

[0012] a voice coil arranged in the shell, one end of the voice coil being inserted into the magnetic gap, and the other end of the voice coil being connected to the shell.

[0013] In one of the embodiments, the heat dissipation structure comprises a heat dissipation body and a plurality of heat dissipation fins connected to the heat dissipation body, the heat dissipation body is in contact with the magnetic circuit system, and the heat dissipation fins are located on the side of the heat dissipation body away from the magnetic circuit system.

[0014] In one of the embodiments, the magnetic circuit system comprises a magnetic conducting bowl and a magnetic steel assembly at least partially arranged in the magnetic conducting bowl, the magnetic steel assembly and the magnetic conducting bowl form the magnetic gap therebetween, the heat dissipation structure is in contact with the magnetic conducting bowl, and the magnetic conducting bowl is adhered to the support assembly by the adhesive.

[0015] In one of the embodiments, the magnetic conducting bowl has a first end face and a second end face arranged opposite to the first end face, the first end face is provided with a groove, at least part of the magnetic steel assembly is arranged in the groove, the heat dissipation structure is in contact with and connected to the second end face, and the support assembly is adhered to the second end face by the adhesive.

[0016] In one of the embodiments, the support assembly comprises a first support sheet and a second support sheet, the first support sheet and the second support sheet are both annular, and the outer edges of the first support sheet and the second support sheet are both connected to the shell; the inner edge of the first support sheet is adhered to the second end face of the magnetic conducting bowl by the adhesive, and the inner edge of the second support sheet is adhered to the first end face of the magnetic conducting bowl by the adhesive.

[0017] In one of the embodiments, the inner annular surface of the first support sheet is in abutment with the circumferential surface of the heat dissipation structure.

[0018] In one of the embodiments, the inner annular surface of the first support sheet is adhered to the circumferential surface of the heat dissipation structure by the adhesive.

[0019] In one of the embodiments, the first support sheet comprises an inner connecting portion, an outer connecting portion, and a wave portion connected between the inner connecting portion and the outer connecting portion, the inner connecting portion and the outer connecting portion are both planar, the inner connecting portion is adhered to the second end face of the magnetic conducting bowl by the adhesive, the outer connecting portion is connected to the shell, and the longitudinal section of the wave portion is wavy.

[0020] In one of the embodiments, the first support sheet and the second support sheet are oppositely arranged in the thickness direction of the shell, the wave portion comprises a plurality of protrusions sequentially arranged in the radial direction of the first support sheet, the protrusions extend away from the second support sheet, and the lengths of the plurality of protrusions in the thickness direction of the shell gradually decrease in the direction from the outer edge to the center of the first support sheet.

[0021] In one of the embodiments, the material of the first support sheet is aramid fiber; and / or, the material of the second support sheet is aramid fiber.

[0022] The beneficial effects of this utility model are:

[0023] The vehicle-mounted vibrator provided by this utility model has a magnetic circuit system bonded to a support component via an adhesive, which improves the connection strength between the magnetic circuit system and the support component. Furthermore, a heat dissipation structure is located on one side of the magnetic circuit system to absorb heat from the magnetic circuit system, allowing the magnetic circuit system to maintain a lower temperature. The lower temperature of the magnetic circuit system reduces the risk of adhesive failure in the connection between the magnetic circuit system and the support component, ensuring the performance of the adhesive and thus guaranteeing the reliability and strength of the connection between the magnetic circuit system and the support component. This reduces the probability of connection failure and extends the service life of the vehicle-mounted vibrator. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments of this utility model will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the content of the embodiments of this utility model and these drawings without creative effort.

[0025] Figure 1 This is an exploded view of the vehicle-mounted vibrator provided in this embodiment of the utility model;

[0026] Figure 2 This is a schematic diagram of the heat dissipation structure provided in an embodiment of the present invention;

[0027] Figure 3 This is a top view of the vehicle-mounted vibrator provided in this embodiment of the utility model;

[0028] Figure 4 This is a utility model Figure 3 The AA section view shown;

[0029] Figure 5 This is a cross-sectional view of a vehicle-mounted vibrator provided in an embodiment of this utility model;

[0030] Figure 6 This is a utility model Figure 5 The enlarged view at point B is shown below;

[0031] Figure 7 This is a schematic diagram of the structure of the first sheet provided in this embodiment of the utility model;

[0032] Figure 8 This is a performance test diagram of the vehicle-mounted vibrator provided in an embodiment of this utility model;

[0033] Figure 9is a schematic view of structure one and structure two provided by the embodiment of the utility model;

[0034] Figure 10 is the sectional view of the first supporting sheet provided by the embodiment of the utility model;

[0035] Figure 11 is the stress curve diagram of the six feature points provided by the embodiment of the utility model;

[0036] Figure 12 is the stress curve diagram of the six feature points provided by the embodiment of the utility model;

[0037] Figure 13 is the stress nephogram of structure one provided by the embodiment of the utility model;

[0038] Figure 14 is the stress nephogram of structure two provided by the embodiment of the utility model.

[0039] In the figure,

[0040] 100, shell;110, upper shell;120, lower shell;200, supporting assembly;210, first supporting sheet;211, inner connecting part;212, outer connecting part;213, wave part;2131, protrusion;220, second supporting sheet;300, magnetic circuit system;310, magnetic gap;320, magnetic conducting bowl;321, first end face;322, second end face;323, recess;330, magnetic steel assembly;331, magnetic steel;332, magnetic conducting sheet;400, heat dissipation structure;410, heat dissipation main body;420, heat dissipation fin;500, voice coil;600, colloid. DETAILED DESCRIPTION

[0041] In order to make the technical problems solved by the utility model, the technical scheme adopted and the technical effects reached more clear, the technical scheme of the utility model is further illustrated below by specific implementation manners in conjunction with the drawings.It can be understood that the specific embodiments described here are only used for explaining the utility model, and not for limiting the utility model.In addition, it needs to be explained that, for the convenience of description, only the parts related to the utility model are shown in the drawings, not all.

[0042] It should be noted that: similar signs and letters represent similar items in the following drawings, therefore, once an item is defined in one drawing, it does not need to be further defined and explained in the following drawings.

[0043] In the description of the utility model, unless another definite provision and limitation, the term "link", "connect", "fix" should do the broad sense understanding, for example, can be fixed connection, also can be detachable connection, or be integrated, can be mechanical connection, also can be electrical connection, can be directly connected, also can indirectly connect through the intermediate medium, can be two elements inside the communication or two element's interaction relationship. For the ordinary skill in the art, the specific meaning of the above-mentioned terms in the utility model can be understood according of the specific circumstances.

[0044] In the utility model, unless another definite provision and limitation, the first feature is "on" or "under" the second feature can include that the first and second features are in direct contact, or can include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, the first feature "on", "above" and "above" the second feature includes that the first feature is directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "under", "below" and "below" the second feature includes that the first feature is directly below and obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature. In the description of the embodiment, if not specially stated, "a plurality of" specifically refers to two or more than two.

[0045] In the description of the embodiment, the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and other orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, which is only for the convenience of description and simplification of operation, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model. In addition, the terms "first", "second" are only used to distinguish in the description, and have no special meaning.

[0046] It should be noted that when an element is referred to as "fixed to" or "provided on" another element, it can be directly on another element or there can be a middle element.

[0047] The technical scheme of the utility model is further illustrated below by combining the drawings and through specific embodiments.

[0048] The embodiment provides a vehicle-mounted vibrator, which has high connection strength and reliability and has a long service life. Exemplarily, the vehicle-mounted vibrator in the embodiment can be a moving-iron vibrator.

[0049] As Figures 1 to 7As shown, the vehicle-mounted vibrator includes a shell 100, a support assembly 200, a magnetic circuit system 300, a voice coil 500, and a heat dissipation structure 400. The support assembly 200 is connected to the shell 100, the magnetic circuit system 300 is connected to the support assembly 200, and the heat dissipation structure 400 is connected to the magnetic circuit system 300.

[0050] As shown in the example, Figure 1 The shell 100 includes an upper shell 110 and a lower shell 120 connected together. The upper shell 110 cooperates with the lower shell 120 to form a receiving space, and the magnetic circuit system 300 is located in the receiving space, that is, the magnetic circuit system 300 is arranged in the shell 100. In this embodiment, the magnetic circuit system 300 is bonded to the support assembly 200 by a glue 600, so that the support assembly 200 and the magnetic circuit system 300 are connected as a whole. In addition, the magnetic circuit system 300 has a magnetic gap 310. The voice coil 500 is arranged in the shell 100, one end of the voice coil 500 is inserted into the magnetic gap 310, so that the voice coil 500 can generate low-frequency vibration in cooperation with the magnetic circuit system 300 after being powered. The other end of the voice coil 500 is connected to the shell 100. Specifically, the other end of the voice coil 500 is connected to the lower shell 120.

[0051] As shown in the example, Figure 4 The heat dissipation structure 400 is arranged on one side of the magnetic circuit system 300, and the heat dissipation structure 400 is in contact with the magnetic circuit system 300 and absorbs heat of the magnetic circuit system 300 to reduce the temperature of the magnetic circuit system 300. The heat dissipation structure 400 can release the absorbed heat to continuously absorb the heat of the magnetic circuit system 300, so that the temperature of the magnetic circuit system 300 can be lower. In some optional embodiments, the heat dissipation structure 400 can be connected to the magnetic circuit system 300, so that the heat dissipation structure 400 and the magnetic circuit system 300 are connected as a whole, improving the integration of the heat dissipation structure 400 and the magnetic circuit system 300, reducing the effect of the separation of the heat dissipation structure 400 and the magnetic circuit system 300 on the heat dissipation of the magnetic circuit system 300, and improving the heat dissipation reliability.

[0052] The vehicle-mounted vibrator provided in this embodiment has the following advantages. The magnetic circuit system 300 is bonded to the support assembly 200 by the glue 600 to improve the connection strength of the magnetic circuit system 300 and the support assembly 200. The heat dissipation structure 400 is arranged on one side of the magnetic circuit system 300 and absorbs heat on the magnetic circuit system 300 to reduce the temperature of the magnetic circuit system 300. The lower-temperature magnetic circuit system 300 reduces the risk of failure of the glue 600 connecting the magnetic circuit system 300 and the support assembly 200, ensures the performance of the glue 600, and further ensures the connection reliability and connection strength of the magnetic circuit system 300 and the support assembly 200, reduces the probability of failure of the connection of the magnetic circuit system 300 and the support assembly 200, and prolongs the service life of the vehicle-mounted vibrator.

[0053] In addition, the temperature of the magnetic circuit system 300 is low, and the power compression of the vehicle-mounted vibrator can be reduced, and the effective power of the vehicle-mounted vibrator is improved.

[0054] In order to improve the heat dissipation effect of the magnetic circuit system 300, the cross-sectional area of the heat dissipation structure 400 in the embodiment can be equal to the cross-sectional area of the magnetic circuit system 300, so that the heat dissipation structure 400 and the magnetic circuit system 300 can have a larger contact area, and then the magnetic circuit system 300 can have a larger heat dissipation area, and the heat dissipation effect of the magnetic circuit system 300 is further improved, and the temperature of the magnetic circuit system 300 is avoided to be high. It can be understood that the cross-sectional area of the heat dissipation structure 400 can also be less than or greater than the cross-sectional area of the magnetic circuit system 300, and the embodiment is not limited thereto.

[0055] The specific structure of the heat dissipation structure 400 can be various, and the embodiment provides a heat dissipation structure 400. Exemplarily, as shown in Figure 2 The heat dissipation structure 400 includes a heat dissipation body 410 and a plurality of heat dissipation fins 420 arranged on the heat dissipation body 410. The heat dissipation body 410 is in contact with the magnetic circuit system 300, and the heat dissipation fins 420 are located on the side of the heat dissipation body 410 away from the magnetic circuit system 300. The heat dissipation body 410 is used to absorb heat on the magnetic circuit system 300, and transmit the heat to the heat dissipation fins 420, and the heat dissipation fins 420 release the heat in the direction away from the magnetic circuit system 300, to achieve heat dissipation. By arranging a plurality of heat dissipation fins 420, the area of the heat dissipation structure 400 for releasing heat can be increased, so that the heat dissipation structure 400 can release its heat as soon as possible, so as to continuously absorb heat from the magnetic circuit system 300, and the heat exchange efficiency between the magnetic circuit system 300 and the heat dissipation structure 400 is improved.

[0056] In some optional embodiments, the heat dissipation fins 420 can be regularly arranged on the heat dissipation body 410, for example, a plurality of heat dissipation fins 420 are arranged at equal intervals on the heat dissipation body 410, so as to improve the uniformity of heat dissipation of each region of the heat dissipation body 410. It can be understood that the heat dissipation fins 420 can also be irregularly arranged on the heat dissipation body 410, and the embodiment is not limited thereto.

[0057] In one embodiment, as shown in Figure 1 The magnetic circuit system 300 includes a magnetic conducting bowl 320 and a magnetic steel assembly 330 arranged at least partially in the magnetic conducting bowl 320. The magnetic steel assembly 330 and the magnetic conducting bowl 320 form a magnetic gap 310 therebetween. As shown in Figure 4As shown, the heat dissipation structure 400 contacts and connects to the magnetic bowl 320, which is bonded to the support assembly 200 via the adhesive 600. In this way, the heat dissipation structure 400 absorbs heat from the magnetic bowl 320, preventing the temperature of the magnetic bowl 320 from becoming too high. Consequently, the temperature of the adhesive 600 bonded to the magnetic bowl 320 also remains low, thus preventing any impact on the performance of the adhesive 600.

[0058] For example, such as Figure 1 As shown, the magnet assembly 330 includes a magnet 331 and a magnetic sheet 332. The magnet 331 is disposed between the magnetic sheet 332 and the magnetic cup 320, and a magnetic gap 310 is formed between the magnet 331 and the magnetic cup 320 and between the magnetic sheet 332 and the magnetic cup 320.

[0059] Further optional, such as Figure 5 As shown, the magnetic cup 320 has a first end face 321 and a second end face 322 disposed opposite to the first end face 321. The first end face 321 and the second end face 322 are two surfaces of the magnetic cup 320 disposed opposite each other in the thickness direction (i.e., the Y direction) of the housing 100. Specifically, in Figure 5 In this embodiment, the first end face 321 is located below the second end face 322. The first end face 321 is provided with a groove 323, that is, the magnetic cup 320 in this embodiment is inverted, and at least part of the magnet assembly 330 is disposed in the groove 323. Specifically, the magnet 331 is located in the groove 323, and the magnetic sheet 332 may be located in the groove 323, or may not be located in the groove 323, or may be partially located in the groove 323.

[0060] Please continue reading Figure 5 The heat dissipation structure 400 contacts the second end face 322, and the support component 200 is bonded to the second end face 322 via the adhesive 600. Thus, both the heat dissipation structure 400 and the adhesive 600 are in contact with the second end face 322, making the heat dissipation structure 400 close to the adhesive 600. This means the distance between the adhesive 600 and the cold source can be smaller, further reducing the probability of the adhesive 600 overheating and further improving the connection strength and reliability between the magnetic bowl 320 and the support component 200. In some optional embodiments, the adhesive 600 can directly contact the heat dissipation structure 400 to further improve the heat dissipation effect of the heat dissipation structure 400 on the adhesive 600, avoiding the situation where the adhesive 600 overheats.

[0061] In one possible implementation, this embodiment provides a support component 200, such as... Figure 1 and Figure 4As shown, the support assembly 200 comprises a first support sheet 210 and a second support sheet 220. The first support sheet 210 and the second support sheet 220 are both annular, and the outer edges of the first support sheet 210 and the second support sheet 220 are connected to the shell 100. The inner edge of the first support sheet 210 is bonded to the second end face 322 of the magnetic conducting bowl 320 by the adhesive 600, and the inner edge of the second support sheet 220 is bonded to the first end face 321 of the magnetic conducting bowl 320 by the adhesive 600. In this way, the magnetic conducting bowl 320 is supported by the first support sheet 210 and the second support sheet 220, which improves the support effect and stability of the magnetic circuit system 300, and the structure of the support assembly 200 is simple and light in weight, which is conducive to the light weight of the vehicle-mounted vibrator.

[0062] Exemplarily, as shown in FIG. 1, Figure 4 the outer edge of the first support sheet 210 is connected to the end face of the upper shell 110 away from the lower shell 120, and the outer edge of the second support sheet 220 is clamped between the upper shell 110 and the lower shell 120.

[0063] In order to further improve the stability of the support assembly 200 supporting the magnetic circuit system 300, in an embodiment, as shown in FIG. 1, Figure 6 the inner annular surface of the first support sheet 210 abuts against the circumferential surface of the heat dissipation structure 400. In this way, the heat dissipation structure 400 is connected to the magnetic circuit system 300, and the first support sheet 210 is not only connected to the magnetic circuit system 300 but also connected to the heat dissipation structure 400, forming a double connection structure, which can also increase the connection area of the first support sheet 210 and the magnetic circuit system 300 and further improve the connection strength.

[0064] In other embodiments, the inner annular surface of the first support sheet 210 can also not abut against the heat dissipation structure 400, but the inner annular surface of the first support sheet 210 is bonded to the circumferential surface of the heat dissipation structure 400 by the adhesive 600. In this way, the connection strength of the first support sheet 210 and the heat dissipation structure 400 can be provided, so that the first support sheet 210, the heat dissipation structure 400 and the magnetic circuit system 300 can be connected as a whole.

[0065] It should be noted that, in order to avoid the second support sheet 220 interfering with the voice coil 500 or the magnetic steel assembly 330, in the present embodiment, the inner annular surface of the second support sheet 220 is spaced apart from the magnetic steel assembly 330 or the voice coil 500.

[0066] The present embodiment provides a first support sheet 210. In an implementable manner, as shown in FIG. 1, Figure 7As shown, the first supporting sheet 210 comprises an inner connecting portion 211, an outer connecting portion 212, and a wave portion 213 connected between the inner connecting portion 211 and the outer connecting portion 212. The inner connecting portion 211 and the outer connecting portion 212 are both in a planar shape, and the inner connecting portion 211 is adhered to the second end surface 322 of the magnetic conductive bowl 320 through the adhesive 600. The planar inner connecting portion 211 has a large connecting area with the second end surface 322, thereby having a high connecting strength. The outer connecting portion 212 is connected to the shell 100, and the planar outer connecting portion 212 has a large connecting area with the shell 100, thereby ensuring the connecting strength. The longitudinal section of the wave portion 213 is in a wave shape, so that the wave portion 213 can have a certain elastic deformation ability in the radial direction and the axial direction of the first supporting sheet 210, thereby realizing the soft connection between the magnetic circuit system 400 and the shell 100, reducing the risk of damage of the first supporting sheet 210, and prolonging the service life of the first supporting sheet 210.

[0067] It should be noted that, as shown in Figure 4 and Figure 5 , the first supporting sheet 210 and the second supporting sheet 220 are oppositely arranged in the thickness direction (i.e., the Y direction) of the shell 100. The structure of the first supporting sheet 210 is completely same as that of the first supporting sheet 210, so that the second supporting sheet 220 also has a long service life. The first supporting sheet 210 and the second supporting sheet 220 are symmetrically arranged to ensure the effect of supporting the magnetic circuit system 400.

[0068] In some optional embodiments, as shown in Figure 5 and Figure 7 , the wave portion 213 comprises a plurality of protrusions 2131 arranged in sequence in the radial direction of the first supporting sheet 210. The protrusions 2131 on the first supporting sheet 210 extend away from the second supporting sheet 220, and the protrusions 2131 on the second supporting sheet 220 extend away from the first supporting sheet 210. In the direction from the outer edge to the center of the first supporting sheet 210, the lengths of the plurality of protrusions 2131 in the thickness direction (i.e., the Y direction) of the shell 100 gradually decrease. In this way, the first supporting sheet 210 and the second supporting sheet 220 are both designed in a gradient manner, which can reduce the central stress distribution of the first supporting sheet 210 and the second supporting sheet 220, further reduce the probability of damage of the first supporting sheet 210 and the second supporting sheet 220, and prolong the service life of the supporting assembly 200.

[0069] For example, the material of the first supporting sheet 210 is aramid fiber, which has high fatigue resistance, thereby making the first supporting sheet 210 have high fatigue resistance, so that the first supporting sheet 210 is not easy to be damaged and has high reliability. It can be understood that the material of the second supporting sheet 220 can also be aramid fiber, so that the second supporting sheet 220 also has high fatigue resistance.

[0070] Optionally, the colloid 600 in this embodiment is a photosensitive adhesive (also known as UV adhesive). The photosensitive adhesive can have a small hardness after curing, thereby having a high fatigue resistance, thereby improving the fatigue resistance of the entire vehicle-mounted vibrator and optimizing the service life of the vehicle-mounted vibrator.

[0071] Optionally, the vehicle-mounted vibrator provided in this embodiment has a volume of φ60*26.1mm, and it can be seen that the volume is small. The weight of the vehicle-mounted vibrator is 100g, which meets the lightweight design. The frequency can reach a resonance frequency of 50Hz, and the rated power is 5W, which can pass the 1000-hour IEC268-5 power test. The actual performance is shown in Figure 8 .

[0072] In order to extend the first and second support pieces provided in this embodiment to have a high structural strength, this embodiment provides a support piece structure with two structures as shown in Figure 8 . The two structures are referred to as structure one and structure two, respectively. Each support piece includes three protrusions 2131. In structure one, the heights of the three protrusions 2131 on the support piece are completely the same. In structure two, along the direction from the outer edge of the support piece to the center, the length of the three protrusions 2131 in the thickness direction (i.e., Y direction) of the shell 100 gradually decreases, that is, the height of the protrusion 2131 gradually decreases.

[0073] As shown in Figure 9 , seven feature points are selected on the support piece, which are feature point 1, feature point 2, feature point 3, feature point 4, feature point 5, feature point 6, and feature point 7. In the case where the displacement of the support piece is -4mm (i.e., the free end of the support piece moves downward by 4mm under the action of an external force), the stresses at the feature points 1-6 are calculated through simulation, and the stress values in Tables 1 and 2 are obtained. According to the stress values, the stress curve diagrams as shown in Figure 11 and Figure 12 , and the stress contour diagrams as shown in Figure 13 and Figure 14 are obtained. Among them, Figure 11 is the stress on the upper surface of the support piece, Figure 12 is the stress on the lower surface of the support piece. Figure 13 is the stress contour diagram of structure one, Figure 14 is the stress contour diagram of structure two.

[0074] According to the calculation results, it can be seen that the stresses of the support piece of structure two at the six feature points are mostly smaller than the stresses of the support piece of structure one at the corresponding six feature points, which verifies that the structure of the support piece provided in this embodiment is stronger, has better fatigue resistance, and has smaller central stress distribution.

[0075] Table 1

[0076]

[0077] Table II

[0078]

[0079] It should be noted that the above only the preferred embodiments of the present application and the use of technical principles. Those skilled in the art will understand that the present application is not limited to the specific embodiments described herein, those skilled in the art can make various obvious changes, re-adjustment and replacement without departing from the scope of the present application. Therefore, although the above embodiments of the present application has been described in more detail, but the present application is not limited to the above examples, without departing from the concept of the present application, but also includes more other equivalent embodiments, and the scope of the present application is determined by the appended claims.

Claims

1. A vehicle-mounted vibrator characterized by comprising: The application relates to a loudspeaker, which comprises the following parts: a shell (100); a support assembly (200) connected to the shell (100); a magnetic circuit system (300) arranged in the shell (100) and bonded to the support assembly (200) through a glue body (600), wherein the magnetic circuit system (300) has a magnetic gap (310); a heat dissipation structure (400) arranged on one side of the magnetic circuit system (300), wherein the heat dissipation structure (400) is in contact with the magnetic circuit system (300) and used for absorbing heat of the magnetic circuit system (300); a voice coil (500) arranged in the shell (100), wherein one end of the voice coil (500) is inserted into the magnetic gap (310) and the other end of the voice coil (500) is connected to the shell (100).

2. The vehicle-mounted vibrator according to claim 1, characterized by The heat dissipation structure (400) comprises a heat dissipation main body (410) and a plurality of heat dissipation ribs (420) connected to the heat dissipation main body (410), wherein the heat dissipation main body (410) is in contact with the magnetic circuit system (300), and the heat dissipation ribs (420) are arranged on the side of the heat dissipation main body (410) away from the magnetic circuit system (300).

3. The vehicle-mounted vibrator according to claim 1, characterized by, The magnetic circuit system (300) comprises a magnetic conductive bowl (320) and a magnetic steel assembly (330) arranged at least partially in the magnetic conductive bowl (320), wherein the magnetic steel assembly (330) and the magnetic conductive bowl (320) form the magnetic gap (310), the heat dissipation structure (400) is in contact with the magnetic conductive bowl (320), and the magnetic conductive bowl (320) is bonded to the support assembly (200) through the glue body (600).

4. The vehicle-mounted vibrator according to claim 3, characterized by The magnetic conductive bowl (320) has a first end face (321) and a second end face (322) arranged away from the first end face (321), the first end face (321) is provided with a groove (323), at least part of the magnetic steel assembly (330) is arranged in the groove (323), the heat dissipation structure (400) is in contact with and connected to the second end face (322), and the support assembly (200) is bonded to the second end face (322) through the glue body (600).

5. The vehicle-mounted vibrator according to claim 4, characterized by The support assembly (200) comprises a first support sheet (210) and a second support sheet (220), the first support sheet (210) and the second support sheet (220) are both annular, and the outer edges of the first support sheet (210) and the second support sheet (220) are both connected to the shell (100); the inner edge of the first support sheet (210) is bonded to the second end face (322) of the magnetic conductive bowl (320) through the glue body (600), and the inner edge of the second support sheet (220) is bonded to the first end face (321) through the glue body (600).

6. The vehicle-mounted vibrator according to claim 5, characterized by The inner annular surface of the first support sheet (210) is in abutment with the circumferential surface of the heat dissipation structure (400).

7. The vehicle-mounted vibrator according to claim 5, wherein The inner annular surface of the first support sheet (210) is bonded to the circumferential surface of the heat dissipation structure (400) through the glue body (600).

8. The vehicle-mounted vibrator according to claim 5, characterized by, The first supporting sheet (210) comprises an inner connecting portion (211), an outer connecting portion (212), and a wave portion (213) connected between the inner connecting portion (211) and the outer connecting portion (212), the inner connecting portion (211) and the outer connecting portion (212) are both in a planar shape, the inner connecting portion (211) is bonded to the second end surface (322) of the magnetic conductive bowl (320) through a colloid (600), the outer connecting portion (212) is connected to the shell (100), and a longitudinal section of the wave portion (213) is in a wave shape.

9. The vehicle-mounted vibrator according to claim 8, characterized by The first supporting sheet (210) and the second supporting sheet (220) are oppositely arranged in a thickness direction of the shell (100), the wave portion (213) comprises a plurality of protrusions (2131) arranged in a radial direction of the first supporting sheet (210) in sequence, the protrusions (2131) extend away from the second supporting sheet (220), and the lengths of the plurality of protrusions (2131) in the thickness direction of the shell (100) gradually decrease in a direction from an outer edge to a center of the first supporting sheet (210).

10. The vehicle-mounted vibrator according to claim 5, characterized by, The material of the first supporting sheet (210) is aramid fiber; and / or the material of the second supporting sheet (220) is aramid fiber.

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