Low-frequency vibration exciter for automobile seat

Abstract

The utility model provides an automobile seat low-frequency vibration exciter which comprises a shell, a vibration excitation mechanism is arranged in the shell, and the vibration excitation mechanism is used for generating vibration; the shell comprises a shell body and a first cover body which are sequentially connected, the shell is formed by assembling the shell body and the first cover body, and a first gap is formed in the connecting position of the first cover body and the shell body, so that under the condition that the vibration exciter vibrates at full power, the shell body collides with the first cover body, and then serious noise is generated; the first gap is filled with the first buffer layer, so that collision between the shell and the first cover body due to vibration is prevented, noise is further avoided, and the use experience of a user is improved.

Description

Technical Field

[0001] This application generally relates to the technical field of automotive parts, and specifically relates to an automotive seat low-frequency vibrator. Background Art

[0002] Currently, seat vibrators on the market are all assembled from various components. In order to achieve normal assembly, a certain gap needs to be reserved in the design between various components. Therefore, under full-power vibration, the gaps between various components of the vibrator will have severe relative flapping or knocking, and thus emit serious noise, which gives users a very bad experience. Utility Model Content

[0003] In view of the above-mentioned defects or deficiencies in the prior art, it is desired to provide an automotive seat low-frequency vibrator that can solve the above technical problems.

[0004] This application provides an automotive seat low-frequency vibrator, including:

[0005] A housing, the housing includes a housing body and a first cover connected in sequence, and there is a first gap at the connection between the first cover and the housing body;

[0006] A vibration mechanism, the vibration mechanism is arranged inside the housing body; the vibration mechanism is used to generate vibration;

[0007] A first buffer layer, the first buffer layer is filled in the first gap, and the first buffer layer is used to prevent collision between the housing body and the first cover.

[0008] According to the technical solution provided by this application, the housing body includes a middle frame and a second cover, one side of the middle frame away from the second cover is connected to the first cover, and there is a second gap at the connection between the second cover and the middle frame; the first buffer layer is filled in the second gap, and the first buffer layer is used to prevent collision between the middle frame and the second cover.

[0009] According to the technical solution provided by this application, a fixing seat is arranged on one side of the first cover away from the middle frame, the edge of the first cover is connected to the edge of the fixing seat, and a second buffer layer is arranged between the fixing seat and the first cover, and the second buffer layer is used to prevent collision between the first cover and the fixing seat.

[0010] According to the technical solution provided by this application, the first buffer layer and / or the second buffer layer is a flexible elastic body or an adhesive body or a fusion body generated after ultrasonic welding.

[0011] According to the technical solution provided by the present application, a circuit board is provided on the first cover body. The circuit board is connected with a wire, and the other end of the wire is connected with the excitation mechanism; a third buffer layer is fixedly connected between the circuit board and the first cover body; the wire is fixed on the first cover body.

[0012] According to the technical solution provided by the present application, the third buffer layer is an adhesive body or a hot melt body.

[0013] According to the technical solution provided by the present application, it further includes: a wire harness. One end of the wire harness is connected with an external electrical component, and the other end of the wire harness has a positive electrode and a negative electrode. The positive electrode and the negative electrode extend into the housing and are connected with the circuit board; the end of the wire harness extending into the housing is fixed between the first cover body and the fixing seat. There are third gaps between the wire harness and the fixing seat and the first cover body respectively, and the third gaps are filled with a fourth buffer layer.

[0014] According to the technical solution provided by the present application, a card slot is provided on the first cover body, and the wire is clamped in the card slot.

[0015] According to the technical solution provided by the present application, the housing has a top surface, a bottom surface and a side surface surrounding its outer periphery. The top surface is located on the second cover body, the bottom surface is located on the first cover body, and the side surface is located on the middle frame. First air vents are provided on the top surface and / or the bottom surface and / or at least one of the side surfaces, and second air vents communicating with the first air vents are provided on the fixing seat; third air vents communicating with the first air vents and the second air vents are provided on the second buffer layer.

[0016] According to the technical solution provided by the present application, the diameter of the third air vent is larger than that of the first air vent and the second air vent.

[0017] The beneficial effect of the present application is as follows:

[0018] The present application provides an automotive seat low-frequency exciter, which includes a housing. An excitation mechanism is provided inside the housing, and the excitation mechanism is used to generate vibration; the housing includes a housing body and a first cover body connected in sequence. Since the housing is assembled by the housing body and the first cover body, there is a first gap at the connection between the first cover body and the housing body. When the present exciter vibrates at full power, collisions occur between the housing body and the first cover body, thereby generating serious noise; and in the present application, a first buffer layer is filled in the first gap to prevent collisions between the housing body and the first cover body due to vibration, thereby avoiding the generation of noise and improving the user experience. Description of the Drawings

[0019] Other features, objects, and advantages of the present application will become more apparent from the following detailed description of non-limiting embodiments read in conjunction with the accompanying drawings:

[0020] Figure 1 is a front cross-sectional view of a low-frequency vibrator for an automotive seat provided in the present application;

[0021] Figure 2 is a schematic diagram of a low-frequency vibrator for an automotive seat provided in the present application;

[0022] Figure 3 is an exploded view of a low-frequency vibrator for an automotive seat provided in the present application;

[0023] Figure 4 is a cross-sectional view of the connection part of the wire harness and the bottom plate provided in the present application;

[0024] Figure 5 is a schematic diagram of the connection between the circuit board and the wire harness provided in the present application;

[0025] Figure 6 is a schematic diagram of the first buffer layer at the connection between the middle frame and the second cover plate provided in the present application;

[0026] Figure 7 is a schematic diagram of the first buffer layer at the connection between the middle frame and the first cover plate provided in the present application.

[0027] In the figure: 1. Outer shell; 11. Second cover body; 12. Middle frame; 13. First cover body; 2. First buffer layer; 3. Second buffer layer; 4. Fixed seat; 5. First ventilation port; 6. Second ventilation port; 7. Circuit board; 8. Wire harness; 9. Card slot; 10. Coil; 14. Elastic limit component; 15. Magnetic circuit system; 16. Fourth buffer layer; 17. Wire; 18. Fixed column. Detailed implementation manners

[0028] The following further elaborates on the present application in conjunction with the drawings and embodiments. It can be understood that the specific embodiments described herein are merely for explaining the relevant utility model and do not limit the utility model. Additionally, it should be noted that for the sake of description, only the parts related to the utility model are shown in the drawings.

[0029] It should be noted that, without conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The following will elaborate on the present application in detail with reference to the drawings and embodiments.

[0030] Embodiment 1

[0031] Please refer to Figures 1-7 , a low-frequency vibrator for an automotive seat provided by the present application includes:

[0032] The housing 1, the housing 1 includes a housing body and a first cover 13 connected in sequence, and there is a first gap at the connection between the first cover 13 and the housing body;

[0033] The excitation mechanism, the excitation mechanism is arranged inside the housing body; the excitation mechanism is used to generate vibration;

[0034] The first buffer layer 2, the first buffer layer 2 is filled in the first gap, and the first buffer layer 2 is used to prevent collision between the housing body and the first cover 13.

[0035] Specifically, as Figure 3 shown, the excitation mechanism includes a coil 10, an elastic limiting component 14 and a magnetic circuit system 15; the coil 10 is arranged inside the housing body and is used to generate a magnetic field after being electrified; the magnetic circuit system 15 is arranged inside the housing body and is connected to the housing body through the elastic limiting component 14, and the elastic limiting component 14 plays a role of centering and limiting for the magnetic circuit system 15; the magnetic circuit system 15 makes a reciprocating motion along the first direction under the action of the magnetic field generated by the coil 10 to generate vibration and conduct it through the housing 1. In this embodiment, the first direction is the height direction of the housing 1;

[0036] In some embodiments, there is one elastic limiting component 14, and it is located on the side of the magnetic circuit system 15 close to the first cover plate 13; at this time, the housing 1 is approximately a cuboid structure, the first cover 13 is approximately a rectangular plane structure, the housing body is approximately a rectangular cover structure with one end open, and a frame with a circular opening is connected to the inner wall of the cover, so as to form a cylindrical space inside the housing body; the excitation mechanism is arranged in the cylindrical space; in this embodiment, the first cover 13 is a bottom cover, and the first cover 13 is arranged at the opening of the housing body;

[0037] Working principle: The housing 1 includes a housing body and a first cover 13 connected in sequence. Since the housing 1 is assembled by the housing body and the first cover 13, during assembly, in order to achieve normal assembly, a certain gap will be reserved between each component. Therefore, there is a first gap at the connection between the first cover 13 and the housing body. When this exciter vibrates at full power, collision occurs between the housing body and the first cover 13, and then serious noise is generated; while in this application, the first buffer layer 2 is filled in the first gap to prevent collision between the housing body and the first cover 13 due to vibration, thereby avoiding noise generation and improving the user experience.

[0038] In some embodiments, the housing body includes a middle frame 12 and a second cover 11. The side of the middle frame 12 away from the second cover 11 is connected to the first cover 13, and there is a second gap at the connection between the second cover 11 and the middle frame 12; the first buffer layer 2 is filled in the second gap, and the first buffer layer 2 is used to prevent collision between the middle frame 12 and the second cover 11.

[0039] Specifically, as Figure 1 andFigure 3 As shown, in some embodiments, there are two elastic limiting components 14, which are located on both sides of the magnetic circuit system 15; at this time, the housing includes a middle frame 12 and a second cover 11; the outer shell 1 is approximately a cuboid structure, the first cover 13 and the second cover 11 are approximately rectangular planar structures, the middle frame 12 is approximately a rectangular cover structure with openings at both ends, and the first cover 13 and the second cover 11 are respectively located at the openings at both ends of the middle frame 12; a cylindrical space is formed inside the middle frame 12, and the excitation mechanism is inside the cylindrical space; in this embodiment, the second cover 11 is the top cover;

[0040] Specifically, during assembly, in order to achieve normal assembly, a certain gap is reserved between each component. Therefore, there is a first gap at the connection between the first cover 13 and the middle frame 12, and a second gap at the connection between the second cover 11 and the middle frame. When this exciter vibrates at full power, the middle frame 12 collides with the first cover 13 and the second cover 11 respectively, thereby generating serious noise; and in this application, a first buffer layer 2 is filled in both the first gap and the second gap to prevent the middle frame 12 from colliding with the first cover 13 and the second cover 11 due to vibration, thereby avoiding the generation of noise and improving the user experience.

[0041] In some embodiments, a fixing seat 4 is provided on the side of the first cover 13 away from the middle frame 12. The edge of the first cover 13 is connected to the edge of the fixing seat 4. A second buffer layer 3 is provided between the fixing seat 4 and the first cover 13, and the second buffer layer 3 is used to prevent collision between the first cover 13 and the fixing seat 4.

[0042] Specifically, as Figure 3 shown, a fixing seat 4 is provided on the side of the first cover 13 away from the middle frame 12. The four edges of the first cover 13 are fixedly connected to the four edges of the fixing seat 4. Since a certain gap is reserved between the first cover 13 and the fixing seat 4, a second buffer layer 3 is provided between the fixing seat 4 and the first cover 13 to prevent collision between the first cover 13 and the fixing seat 4, thereby avoiding the generation of noise and improving the user experience.

[0043] In some embodiments, the first buffer layer 2 and / or the second buffer layer 3 is a flexible elastomer or an adhesive or a welded body generated after ultrasonic welding.

[0044] In some embodiments, the first buffer layer 2 and / or the second buffer layer 3 is a flexible elastomer. The flexible elastomer absorbs and disperses the vibration and impact energy generated during the operation of the device. While avoiding the generation of noise, it reduces the damage to the device components and helps to extend the service life of the device. The flexible elastomer is generally a rubber sheet or a sponge gasket or a non-woven fabric;

[0045] In some embodiments, the first buffer layer 2 and / or the second buffer layer 3 is an adhesive body to adhesively fix two adjacent parts, such as the middle frame 12 and the second cover 11, the middle frame 12 and the first cover 13, together, eliminating the gap between the two parts. When the vibrator vibrates at full power, the parts cannot collide with each other, thereby eliminating noise. Specifically, as Figure 6 and Figure 7 shown, glue is circumferentially applied around the edges on both sides of the middle frame 12, and then the first cover plate 13 and the second cover plate 11 are respectively adhesively bonded to both sides of the middle frame 12. At this time, adhesive bodies are formed between the middle frame 12 and the first cover plate 13 and the second cover plate 11 respectively.

[0046] Among them, the adhesive body can be a flexible glue 16. The flexible glue 16 can not only absorb acoustic wave vibrations and reduce structural noise, but also, as an adhesive, enhance the bonding strength between materials and improve the stability of the overall structure. Once cured, the buffer layer formed by the flexible glue 16 is not easy to fall off or be damaged, reducing the maintenance frequency; and it is lighter than some traditional buffer materials, which helps to achieve the lightweight design of the product.

[0047] Among them, the adhesive body can be a hard glue 16. The hard glue 16 can not only absorb acoustic wave vibrations and reduce structural noise, but also the hard glue 16 usually has a fast curing time, which can improve the production and assembly efficiency; and the performance of the hard glue 16 is stable after curing, durable in the long term, and not easy to age.

[0048] Among them, the adhesive body can be a double-sided tape.

[0049] In some embodiments, the first buffer layer 2 and / or the second buffer layer 3 is a welded body generated after ultrasonic welding. Specifically, the method of ultrasonic welding can fuse the molecular layers formed by the mutual friction of the surfaces of two adjacent parts (such as the middle frame and the second cover 11, the middle frame and the first cover 13) to form a welded body, so as to eliminate the gap between the two parts. When the vibrator vibrates at full power, the parts cannot collide with each other, thereby eliminating noise; the ultrasonic welding speed is fast, which can significantly improve the production efficiency; the joint strength after welding is high, ensuring the durability and reliability of the product.

[0050] In certain embodiments, a circuit board 7 is provided on the first cover 13. The circuit board 7 is connected with a wire 17, and the other end of the wire 17 is connected with the excitation mechanism; a third buffer layer is fixedly connected between the circuit board 7 and the first cover 13, and the wire 17 is fixed on the first cover 13.

[0051] Specifically, as Figure 5As shown, a circuit board 7 is further provided on the first cover 13. The circuit board 7 is connected to the coil 10 through a wire 17 to form positive and negative electrodes. Since the circuit board 7 is separately fixed on the first cover 13, there is a gap between the circuit board 7 and the first cover 13. Under full-power vibration conditions, serious noise will be generated. Therefore, a third buffer layer is fixedly connected between the circuit board 7 and the first cover 13 to eliminate the gap between the circuit board 7 and the first cover 13, prevent collisions between the first cover 13 and the circuit board 7 during vibration, and thus avoid generating noise and improve the user experience.

[0052] Optionally, the wire 17 is fixed on the first cover 13 by glue.

[0053] In some embodiments, the third buffer layer is an adhesive body or a hot melt body.

[0054] In some embodiments, the third buffer layer is an adhesive body to bond and fix the circuit board 7 and the first cover 13 together, eliminating the gap between the bottom plate and the circuit board 7. When the present vibrator vibrates at full power, the parts cannot collide with each other, thereby eliminating noise. In this embodiment, the third buffer layer is flexible glue 16 or hard glue 16 or double-sided tape.

[0055] In some embodiments, the third buffer layer is a hot melt body. In this embodiment, fixing posts 18 are provided on the first cover plate 13, and first through holes corresponding to the fixing posts 18 are provided on the circuit board 7. The circuit board 7 is sleeved on the fixing posts 18 through the first through holes. At this time, the fixing posts 18 are melted by a hot melt method to form a hot melt body between the circuit board 7 and the first cover plate 13 to fix the circuit board 7 and the first cover 13 together, eliminating the gap between the first cover 13 and the circuit board 7. When the present vibrator vibrates at full power, the parts cannot collide with each other, thereby eliminating noise. Hot melt welding can provide very high connection strength, ensuring a firm combination between the circuit board 7 and the first cover plate 13 and capable of withstanding large forces and vibrations.

[0056] In some embodiments, it further includes: a wire harness 8. One end of the wire harness 8 is connected to an external electrical component, and the other end of the wire harness 8 has a positive electrode and a negative electrode. The positive electrode and the negative electrode extend into the housing 1 and are connected to the circuit board 7. The end of the wire harness 8 extending into the housing is fixed between the first cover 13 and the fixing seat 4, and there are third gaps between the wire harness 8 and the fixing seat 4 and the first cover 13 respectively, and the third gaps are filled with a fourth buffer layer.

[0057] Specifically, such as Figure 2 、 Figure 4 and Figure 5As shown, the vibrator further includes a wire harness 8. One end of the wire harness 8 is connected to an external electrical component, and the other end of the wire harness 8 has a positive electrode and a negative electrode. The positive electrode and the negative electrode extend into the housing 1 and are connected to the circuit board 7, so that the external electrical component is electrically connected to the positive and negative electrodes of the circuit board 7. Since there are third gaps between the end of the wire harness 8 extending into the housing 1 and the fixed seat 4 and the first cover 13 respectively, in order to prevent the wire harness 8 from colliding with the housing 1 and generating noise, a fourth buffer layer 16 is filled in the third gap to eliminate noise. In this application, the fourth buffer layer is an adhesive body to fixedly connect the wire harness 8 to the fixed seat 4 and the first cover 13 respectively.

[0058] In this embodiment, the external electrical part is a power supply or an ECU controller.

[0059] In some embodiments, a card slot 9 is provided on the first cover 13, and the wire is clamped in the card slot 9.

[0060] Specifically, as shown in the figure, a card slot 9 is provided on the first cover 13, and the wire is clamped in the card slot 9 to fixedly connect the wire to the first cover plate 13 and prevent the wire from moving inside the housing 1 and generating noise.

[0061] In some embodiments, the housing 1 has a top surface, a bottom surface and a side surface surrounding its outer periphery. The top surface is located on the second cover 11, the bottom surface is located on the first cover 13, and the side surface is located on the middle frame 12. A first vent 5 is provided on the top surface and / or the bottom surface and / or at least one side surface, and a second vent 6 communicating with the first vent 5 is provided on the fixed seat 4. A third vent communicating with the first vent 5 and the second vent 6 is provided on the second buffer layer 3.

[0062] Specifically, as Figure 3 shown, the housing 1 has a top surface, a bottom surface and four side surfaces. The opening shape and number of the first vents 5 are not limited. In this embodiment, four circular first vents 5 are provided on the top surface in an annular array, four circular first vents 5 are provided on the bottom surface in an annular array, and six rectangular first vents 5 are provided on the side surface. By providing the first vents 5 on the housing 1 in this application, the inside of the housing 1 is communicated with the outside through the first vents 5, and the magnetic circuit system 15 reciprocates in the housing 1 along the first direction under the action of the magnetic field generated by the coil 10, which can achieve the characteristic of promoting the air flow inside the housing 1, so that the inside of the housing 1 is communicated with the outside through the first vents 5 for gas flow, and the heat is discharged from the housing 1 during the internal and external gas exchange process, avoiding excessive heat generation and affecting the service life of the vibrator.

[0063] Specifically, since the fixed seat 4 is fixedly connected to the first cover plate 13, in order to ensure sufficient gas flow between the inside of the housing 1 and the outside, a second ventilation port 6 is provided on the fixed seat 4. The number of the second ventilation ports 6 is the same as that of the first ventilation ports 5 and they correspond to the first ventilation ports 5 one by one, thereby enabling gas flow between the inside and the outside of the housing 1.

[0064] Meanwhile, the second buffer layer 3 is located between the fixed seat 4 and the first cover plate 13. In order to ensure sufficient gas flow between the inside of the housing 1 and the outside while eliminating noise, a third ventilation port communicating with the first ventilation port 5 and the second ventilation port 6 is provided on the second buffer layer 3. The number of the third ventilation ports is the same as that of the first ventilation ports 5 and they correspond to the first ventilation ports 5 and the second ventilation ports 6 one by one, thereby enabling gas flow between the inside and the outside of the housing 1.

[0065] In some embodiments, the diameter of the third ventilation port is larger than that of the first ventilation port 5 and the second ventilation port to prevent the reduction of heat dissipation efficiency.

[0066] The above description is only the preferred embodiments of the present application and the explanation of the applied technical principles. Those skilled in the art should understand that the scope of the utility model involved in the present application is not limited to the technical solutions formed by the specific combination of the above technical features, and should also cover other technical solutions formed by any combination of the above technical features or their equivalent features without departing from the inventive concept. For example, the technical solutions formed by mutually replacing the above features with the technical features (but not limited to) having similar functions disclosed in the present application.

Claims

1. A low-frequency exciter for a car seat, characterized in that: Comprising: A housing (1), the housing (1) includes a housing body and a first cover (13) connected in sequence, and there is a first gap at the connection between the first cover (13) and the housing body; An excitation mechanism, the excitation mechanism is arranged inside the housing body; the excitation mechanism is used to generate vibration; A first buffer layer (2), the first buffer layer (2) is filled in the first gap, and the first buffer layer (2) is used to prevent collision between the housing body and the first cover (13).

2. The low-frequency exciter for an automotive seat according to claim 1, characterized in that The housing body includes a middle frame (12) and a second cover (11), one side of the middle frame (12) away from the second cover (11) is connected to the first cover (13), and there is a second gap at the connection between the second cover (11) and the middle frame (12); the second gap is filled with the first buffer layer (2), and the first buffer layer (2) is used to prevent collision between the middle frame (12) and the second cover (11).

3. The low-frequency exciter for vehicle seat according to claim 2, wherein, A fixing seat (4) is arranged on one side of the first cover (13) away from the middle frame (12), the edge of the first cover (13) is connected to the edge of the fixing seat (4), and a second buffer layer (3) is arranged between the fixing seat (4) and the first cover (13), and the second buffer layer (3) is used to prevent collision between the first cover (13) and the fixing seat (4).

4. The low-frequency exciter for a car seat according to claim 3, characterized in that: The first buffer layer (2) and / or the second buffer layer (3) is a flexible elastomer or an adhesive or a welded body generated after ultrasonic welding.

5. The low-frequency exciter for an automotive seat according to claim 3, characterized in that, A circuit board (7) is arranged on the first cover (13), the circuit board (7) is connected with a wire (17), and the other end of the wire (17) is connected to the excitation mechanism; a third buffer layer is fixedly connected between the circuit board (7) and the first cover (13); the wire (17) is fixed on the first cover (13).

6. The low-frequency exciter for vehicle seat according to claim 5, characterized in that, The third buffer layer is an adhesive or a hot melt body.

7. The low-frequency vibration exciter for a car seat according to claim 6, characterized in that: Further comprising: A wire harness (8), one end of the wire harness (8) is connected to an external electrical component, the other end of the wire harness (8) has a positive electrode and a negative electrode, the positive electrode and the negative electrode extend into the housing (1) and are connected to the circuit board (7); the end of the wire harness (8) extending into the housing (1) is fixed between the first cover (13) and the fixing seat (4), there are third gaps between the wire harness (8) and the fixing seat (4) and the first cover (13) respectively, and the third gaps are filled with a fourth buffer layer (16).

8. The low-frequency vibration exciter for a car seat according to claim 7, characterized in that: A card slot (9) is arranged on the first cover (13), and the wire (17) is clamped in the card slot (9).

9. The low-frequency exciter for an automotive seat according to claim 3, characterized in that, The housing (1) has a top surface, a bottom surface, and side surfaces surrounding its outer periphery. The top surface is located on the second cover body (11), the bottom surface is located on the first cover body (13), and the side surfaces are located on the middle frame (12). A first ventilation opening (5) is provided on the top surface and / or the bottom surface and / or at least one of the side surfaces. A second ventilation opening (6) communicating with the first ventilation opening (5) is provided on the fixed seat (4); a third ventilation opening communicating with the first ventilation opening (5) and the second ventilation opening (6) is provided on the second buffer layer (3).

10. The low-frequency exciter for an automotive seat according to claim 9, characterized in that, The diameter of the third ventilation opening is larger than that of the first ventilation opening (5) and the second ventilation opening (6).

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