Low-frequency seat vibration exciter and automobile seat

Abstract

The utility model provides a low-frequency seat vibration exciter and an automobile seat. The vibration exciter comprises a shell, and at least one first ventilation opening is formed in the shell; a vibration excitation mechanism is arranged in the shell; comprising a coil, an elastic limiting assembly and a magnetic circuit system, the magnetic circuit system is connected with the shell through an elastic limiting assembly, the magnetic circuit system reciprocates in the first direction under the action of a magnetic field generated by the coil, vibration is generated and conducted through the shell, and meanwhile air in the shell is exchanged with the outside through the first ventilation opening. The first air vent is formed in the shell, so that the interior of the shell is communicated with the outside through the first air vent, and air circulation between the interior of the shell and the outside is achieved through the first air vent by means of the characteristic that the magnetic circuit system reciprocates in the shell in the first direction under the action of a magnetic field generated by the coil to promote air in the shell to flow. Heat is discharged out of the shell in the internal and external gas exchange process, and the service life of the vibration exciter is prevented from being affected by overlarge heat.

Description

Technical Field

[0001] The present application relates to the technical field of automobile parts, and in particular to a low-frequency seat exciter and an automobile seat. Background Art

[0002] Seat vibrators currently on the market generate severe heat when working at full power for a long time, which can affect the service life of the vibrator module. In order to reduce heat generation and increase the life of the vibrator module, R&D personnel often reduce the power to improve the difficulty of severe heat generation. However, after reducing the power, the vibration intensity triggered by the vibrator module will be greatly reduced, which brings a bad experience to users. Utility Model Content

[0003] In a first aspect, the present application provides a low-frequency seat exciter, comprising:

[0004] A shell, wherein the shell is provided with at least one first vent opening connecting the interior of the shell with the outside;

[0005] The excitation mechanism is arranged in the shell; the excitation mechanism comprises a coil, an elastic limiting component and a magnetic circuit system.

[0006] The coil is arranged in the shell and is used to generate a magnetic field after power is turned on; the magnetic circuit system is arranged in the shell and connected to the shell through the elastic limit assembly. The magnetic circuit system reciprocates along the first direction under the action of the magnetic field generated by the coil to generate vibration and conduct it through the shell, while allowing the air inside the shell to be exchanged with the outside through the first vent.

[0007] According to the technical solutions provided in some embodiments of the present application, the shell has a top surface, a bottom surface and side surfaces surrounding its periphery, and the first vent is opened on the top surface and / or the bottom surface and / or at least one of the side surfaces.

[0008] According to the technical solutions provided in some embodiments of the present application, the housing includes a top cover, a shell and a bottom cover connected in sequence, the top cover has the top surface, the bottom cover has the bottom surface, and the shell has the side surface.

[0009] According to the technical solution provided in certain embodiments of the present application, the elastic limiting assembly includes a first elastic member, and the magnetic circuit system is connected to the shell through the first elastic member; the magnetic circuit system and the first elastic member together divide the space inside the shell into a first space and a second space.

[0010] According to the technical solution provided in certain embodiments of the present application, the elastic limit assembly also includes a second elastic part, and the magnetic circuit system is connected to the shell through the first elastic part and the second elastic part distributed along the first direction; the first elastic part, the second elastic part, the magnetic circuit system and the shell together enclose a third space.

[0011] According to the technical solution provided in certain embodiments of the present application, the first elastic member and the second elastic member are sequentially sleeved on the periphery of the magnetic circuit system along the first direction, and the peripheries of the first elastic member and the second elastic member are sequentially fixed to the inner wall of the shell along the first direction.

[0012] According to the technical solution provided in some embodiments of the present application, the coil is fixed on the bottom cover, and the coil has a positive electrode and a negative electrode, and the positive electrode and the negative electrode are used to connect to external electrical components.

[0013] According to the technical solutions provided in some embodiments of the present application, a fixing seat is connected to the outer side of the bottom cover or the top cover.

[0014] In a second aspect, the present application provides a car seat, comprising foam and a frame, and also comprising a low-frequency seat exciter as described above, wherein the foam has a groove, the fixing seat is fixed to the frame, and the low-frequency exciter has at least a portion extending into the groove so that one side end face of the low-frequency exciter along the first direction contacts the bottom surface of the groove.

[0015] According to the technical solutions provided in certain embodiments of the present application, the contact surface between the foam and the low-frequency seat exciter has a gas passage structure or the contact surface between the low-frequency seat exciter and the foam has a gas passage structure.

[0016] Compared with the prior art, the present application has the following beneficial effects: the present application provides a seat vibrator, comprising a shell, the shell being provided with at least one first vent connecting the inside of the shell with the outside; further comprising an excitation mechanism, the excitation mechanism being arranged in the shell; the excitation mechanism comprising a coil, an elastic limit assembly and a magnetic circuit system, the coil being arranged in the shell and being able to generate a magnetic field after being energized; the magnetic circuit system being arranged in the shell and being connected to the shell through the elastic limit assembly, the magnetic circuit system reciprocating along a first direction under the action of the magnetic field generated by the coil to generate vibration and conduct through the shell, while allowing the air inside the shell to be exchanged with the outside through the first vent; by providing the first vent on the shell, the inside of the shell is connected with the outside through the first vent, and by using the magnetic circuit system to reciprocate along the first direction in the shell under the action of the magnetic field generated by the coil being energized, the characteristic of promoting the flow of air in the shell can be achieved, so that the inside of the shell and the outside can realize gas flow through the first vent, and heat is discharged from the shell during the exchange of internal and external gases, so as to avoid excessive heat generation affecting the service life of the exciter, and there is no need to reduce the power of the exciter, thereby ensuring that the user has a good experience.

[0017] It should be understood that the description of technical features, technical solutions, beneficial effects or similar language in this application does not imply that all features and advantages can be realized in any single embodiment. On the contrary, it is understood that the description of features or beneficial effects means that specific technical features, technical solutions or beneficial effects are included in at least one embodiment. Therefore, the description of technical features, technical solutions or beneficial effects in this specification does not necessarily refer to the same embodiment. Furthermore, the technical features, technical solutions and beneficial effects described in the present embodiment can also be combined in any appropriate manner. Those skilled in the art will understand that the embodiment can be realized without one or more specific technical features, technical solutions or beneficial effects of a specific embodiment. In other embodiments, additional technical features and beneficial effects can also be identified in a specific embodiment that does not embody all embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0019] Figure 1 A schematic diagram of the structure of a low-frequency seat exciter provided in Example 1 of the present application;

[0020] Figure 2 An exploded diagram of a low-frequency seat exciter provided in Example 1 of the present application;

[0021] Figure 3 An enlarged view of part A in the exploded view of a low-frequency seat exciter provided in Example 1 of the present application;

[0022] Figure 4 An enlarged view of part B in the exploded view of a low-frequency seat exciter provided in Example 1 of the present application;

[0023] Figure 5 A schematic structural diagram of a shell of a low-frequency seat exciter provided in Example 1 of the present application;

[0024] Figure 6 A top view of a low-frequency seat exciter provided in Example 1 of the present application;

[0025] Figure 7 A schematic diagram of a side cross-sectional structure of a low-frequency seat exciter provided in Example 1 of the present application;

[0026] Figure 8 An enlarged view of part C in a side cross-sectional structural diagram of a low-frequency seat exciter provided in Example 1 of the present application;

[0027] Fig. 9 A schematic diagram of a cross-sectional structure of a low-frequency seat exciter provided in Example 1 of the present application from a top view;

[0028] Fig.10 A schematic diagram of the internal space structure of a low-frequency seat exciter provided in Example 1 of the present application when a spring is provided;

[0029] Figure 11-13 A schematic diagram of internal gas flow in a working state when a low-frequency seat exciter provided in Example 1 of the present application is provided with a spring;

[0030] Fig.14 A schematic diagram of the internal space structure of a low-frequency seat exciter provided in Example 1 of the present application when two spring waves are provided;

[0031] Figure 15-17 A schematic diagram of internal gas flow in a working state when a low-frequency seat vibrator provided in Example 1 of the present application is provided with two springs;

[0032] Figure 18-19 Schematic diagram of the connection structure of the coil and wiring harness of a low-frequency seat exciter provided in Example 1 of the present application

[0033] Figure 20-21 A schematic diagram of the connection structure of a wiring harness and a fixing base of a low-frequency seat exciter provided in Example 1 of the present application;

[0034] Fig. 22A schematic structural diagram of an additional opening scheme for the first vent of a low-frequency seat exciter provided in Example 1 of the present application;

[0035] Fig.23 A schematic diagram of the internal space structure of a low-frequency seat exciter provided in Example 2 of the present application when a spring is provided and the bottom cover is not provided with a first vent;

[0036] Figure 24-26 A schematic diagram of internal gas flow in a working state when a low-frequency seat exciter provided in Example 2 of the present application is provided with a spring and the bottom cover is not provided with a first vent;

[0037] Fig. 27 A schematic diagram of the structure of a car seat provided in Example 3 of the present application;

[0038] Fig.28 A schematic diagram of a gas passage structure provided on the foam of a car seat provided in Example 3 of the present application;

[0039] Fig.29 This is a schematic diagram of a gas passage structure provided on a vibration exciter of a car seat provided in Example 3 of the present application.

[0040] The text annotations in the figure represent:

[0041] 1. Shell; 2. Coil; 3. Magnetic circuit system; 4. Elastic limit assembly; 5. Circuit board; 6. Wire harness; 7. Frame; 8. Foam; 11. Bottom cover; 12. Top cover; 13. Shell; 14. Fixed seat; 31. Magnetic sheet; 32. Magnetic steel; 33. U iron; 41. First elastic member; 42. Second elastic member; 101. Bottom vent; 102. Top vent; 103. Middle vent; 104. Base vent; 110. First space; 120. Second space; 130. Third space; 111. Snap-on protrusion; 112. Snap-on hole; 113. Buckle; 114. Connector; 115. Groove; 116. Gas passage structure. DETAILED DESCRIPTION

[0042] In order to enable those skilled in the art to better understand the technical solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings. The description in this section is only exemplary and explanatory and should not have any limiting effect on the protection scope of the present application. Specifically, the described embodiments are only embodiments of a part of the present application, not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work should fall within the scope of protection of the present invention.

[0043] It should be noted that similar reference numerals and letters represent similar items in the following figures, so once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0044] Example 1

[0045] As mentioned in the background technology, in view of the problems in the prior art, this embodiment provides a seat vibrator, including:

[0046] A housing 1, wherein the housing 1 is provided with at least one first vent opening connecting the interior of the housing 1 with the outside;

[0047] The excitation mechanism is arranged in the housing 1; the excitation mechanism includes a coil 2, an elastic limiting component 4 and a magnetic circuit system 3.

[0048] The coil 2 is arranged in the shell 1, and is used to generate a magnetic field after power is turned on; the magnetic circuit system 3 is arranged in the shell 1, and is connected to the shell 1 through the elastic limit component 4. The magnetic circuit system 3 reciprocates along the first direction under the action of the magnetic field generated by the coil 2 to generate vibration and conduct it through the shell 1, while allowing the air inside the shell 1 to be exchanged with the outside through the first vent.

[0049] like Figure 1 , Figure 6 and Fig. 9As shown, the shell 1 is approximately a rectangular parallelepiped structure, the first direction is the height direction of the shell 1, the coil 2 includes a coil skeleton and a winding, the coil skeleton is a cylindrical structure, has a top and a bottom distributed along the first direction, and its bottom end is fixed to the bottom of the shell 1, and the winding is wound around the coil skeleton; after the coil 2 is energized, the winding generates a first magnetic field corresponding to the direction of the current; the magnetic circuit system 3 includes a magnetic steel 32, the magnetic steel 32 is a cylindrical structure, and can generate a second magnetic field with a fixed direction, and the two ends of the magnetic steel 32 along the first direction are bonded with a magnetic conductive sheet 31 and a U iron 33, the magnetic conductive sheet 31 is a circular planar structure, and is located at one end of the magnetic steel 32 close to the coil 2, and the U iron 33 is approximately a cylindrical structure with a bottom at one end, and the magnetic steel 32 and the magnetic conductive sheet 31 Located in the cylindrical structure of the U-iron 33, there is a magnetic gap between the outer periphery of the magnetic steel 32 and the magnetic conductive sheet 31 and the inner surface of the U-iron 33, and one end of the coil skeleton wrapped with the winding extends into the magnetic gap. The elastic limit component 4 is sleeved on the outer periphery of the U-iron 33 and fixed to the inside of the shell 1. The elastic limit component 4 plays a centering and limiting role on the magnetic circuit system 3, so that the magnetic circuit system 3 always reciprocates along the first direction under the action of the magnetic field generated by the coil 2. Since the heat of the exciter is mainly concentrated in the middle position of the shell 1 when the exciter is working, the first vent is preferentially arranged near the middle of the shell 1 to facilitate the heat dissipation of the exciter; in this embodiment, the coil skeleton and the shell 1 and the elastic limit component 4 and the U-iron 33 and the shell 1 are fixed by bonding.

[0050] During operation, the alternating current generated by the external electrical components passes through the coil 2, and the coil 2 generates a first magnetic field with changing direction. The first magnetic field and the second magnetic field generated by the magnetic circuit system 3 sometimes attract each other and sometimes repel each other, so that the magnetic circuit system 3 reciprocates relative to the coil 2 along the first direction, and also drives the elastic limit component 4 to be stretched / reset. The movement of the magnetic circuit system 3 and the elastic limit component 4 promotes the flow of air in the shell, and the hot air inside the shell 1 is discharged through the first vent, and the cold air from the outside is sucked into the shell 1 through the first vent, thereby realizing heat exchange between the inside of the shell 1 and the outside.

[0051] By opening a first vent on the outer shell 1, the inside of the outer shell 1 is connected with the outside through the first vent, and the magnetic circuit system 3 is used to reciprocate along the first direction in the outer shell 1 under the action of the magnetic field generated by the coil 2, so as to achieve the characteristic of promoting the flow of air in the outer shell, so that gas flow is achieved between the inside of the outer shell 1 and the outside through the first vent, and heat is discharged from the outer shell 1 during the exchange of internal and external gases, so as to avoid excessive heat generation affecting the service life of the exciter.

[0052] In a preferred embodiment, the housing 1 has a top surface, a bottom surface and side surfaces surrounding the periphery thereof, and the first vent is opened on the top surface and / or the bottom surface and / or at least one side surface.

[0053] like Figure 2 and Figure 6 As shown, the housing 1 has a top surface, a bottom surface and four side surfaces. The shape and number of the openings of the first vent are not limited. In the present embodiment, the top surface is provided with four circular top vents 102 in a circular array, the bottom surface is provided with four circular bottom vents 101 in a circular array, and the side surfaces are provided with six rectangular middle vents 103, and each side surface is provided with at least one middle vent 103.

[0054] In a preferred embodiment, the housing 1 includes a top cover 12, a shell 13 and a bottom cover 11 which are connected in sequence. The top cover 12 has a top surface, the bottom cover 11 has a bottom surface, and the shell 13 has side surfaces.

[0055] like Figure 2 and Figure 3-5 As shown, the top cover 12 and the bottom cover 11 are approximately rectangular planar structures, the shell 13 is approximately a rectangular cover structure with openings at both ends, the inner wall of the cover is connected to a frame with a circular opening, so that a cylindrical space is formed inside the shell 13, the coil 2 is arranged on the bottom cover 11, the bottom end of the coil skeleton is fixed to the bottom cover 11, and the U iron 33 is connected to the shell 13 through an elastic limiting component 4; the shell 13, the bottom cover 11 and the top cover 12 can be fixedly connected or detachably connected. In this embodiment, the above three are connected by a detachable The shell 13 is circumferentially provided with snap-in holes 112, and the bottom cover 11 and the top cover 12 are circumferentially provided with snap-in protrusions 111 corresponding to the snap-in holes 112. The bottom cover 11, the shell 13 and the top cover 12 are sequentially combined along the first direction so that the snap-in protrusions 111 are snap-fitted and fixed with the snap-in holes 112 to form the above-mentioned outer shell 1. The detachable connection method is convenient for subsequent disassembly and maintenance when the exciter fails; the first vent is opened on the top cover 12 and / or the bottom cover 11 and / or the shell 13.

[0056] In a preferred embodiment, the elastic limiting assembly 4 includes a first elastic member 41 , and the magnetic circuit system 3 is connected to the shell 13 via the first elastic member 41 ; the magnetic circuit system 3 and the first elastic member 41 together divide the space in the shell 1 into a first space 110 and a second space 120 .

[0057] like Fig.10As shown, the magnetic circuit system 3, the first elastic member 41, the shell 13 and the bottom cover 11 are enclosed together to form a first space 110, and the magnetic circuit system 3, the first elastic member 41, the shell 13 and the top cover 12 are enclosed together to form a second space 120. The heat of the exciter is mainly generated by the current passing through the coil 2, and the heat generated by the coil 2 is mainly concentrated in the first space 110. The first elastic member 41 adopts a spring wave, which has elasticity and can be stretched when subjected to force, and returns to its initial state after releasing the external force. The spring wave can be made of metal material or cloth material, but is not limited to the above materials; when the magnetic circuit system 3 moves toward the two ends of the shell 1, the spring wave can be stretched, and when the magnetic circuit system 3 is not subjected to the first magnetic field, the spring wave can be stretched. When in use, the elastic wave drives the magnetic circuit system 3 back to the initial position; the elastic wave can be made of air-permeable material or have air guide holes, so that the first space 110 and the second space 120 are connected, which is beneficial to the heat exchange between the first space 110 and the second space 120. When the exciter is working, the heat in the first space 110 and the second space 120 is dissipated to the outside through the first vent through the reciprocating motion of the magnetic circuit system 3 along the first direction; when the elastic wave is made of non-air-permeable material or no air guide holes are provided, since most of the components of the magnetic circuit system 3 are made of metal materials, part of the heat is still conducted from the magnetic circuit system 3 to the second space 120, and then dissipated to the outside through the first vent.

[0058] like Figure 11-13 As shown, when the magnetic circuit system 3 moves along the first direction toward the side close to the bottom cover 11, the first space 110 becomes smaller and the second space 120 becomes larger, the heat in the first space 110 is discharged from the shell 1 through the middle air vent 103 and the bottom air vent 101, and the cold air from the outside is sucked into the second space 120 through the top air vent 102; when the magnetic circuit system 3 moves along the first direction toward the side of the top cover 12, the first space 110 becomes larger and the second space 120 becomes smaller, the cold air from the outside is sucked into the first space 110 through the middle air vent 103 and the bottom vent 101, and the heat in the second space 120 is discharged from the shell 1 through the top air vent 102, thereby realizing heat exchange between the inside of the shell 1 and the outside.

[0059] In a preferred embodiment, the elastic limit assembly 4 also includes a second elastic member 42, and the magnetic circuit system 3 is connected to the shell 13 through a first elastic member 41 and a second elastic member 42 distributed along a first direction; the first elastic member 41, the second elastic member 42, the magnetic circuit system 3 and the shell 13 together enclose a third space 130.

[0060] like Figure 13-16As shown, the second elastic member 42 also adopts a spring wave. In this embodiment, the magnetic circuit system 3 is connected to the shell 13 through two spring waves. In order to ensure that the exciter can produce a good vibration effect, the exciter needs to work at full power most of the time. Therefore, the reciprocating frequency of the magnetic circuit system 3 along the first direction is higher. The two spring waves can make the exciter have better structural strength than when a single spring wave is set, and thus have a longer service life; when the magnetic circuit system 3 moves toward the bottom cover 11 along the first direction, the first space 110 is squeezed and becomes smaller, and the second space 120 and the third space 130 are enlarged. The hot air in the first space 110 is discharged from the bottom vent 101, and the cold air from the outside enters the second space 120 and the third space 130 from the top vent 102 and the middle vent 103 respectively; when the magnetic circuit system 3 moves to the middle of the shell 1 When the magnetic circuit system 3 moves toward the top cover 12 along the first direction, the first space 110 continues to expand, the second space 120 is squeezed and becomes smaller, and the third space 130 is expanded again, and the cold air from the outside enters the first space 110 from the bottom vent 101, and the hot air in the second space 120 and the third space 130 is discharged from the top vent 102 and the middle vent 103 respectively; when the magnetic circuit system 3 moves toward the top cover 12 along the first direction, the first space 110 continues to expand, the second space 120 is squeezed and becomes smaller, and the third space 130 expands again, and the cold air from the outside enters the first space 110 and the third space 130 from the bottom vent 101 and the middle vent 103 respectively, and the hot air in the second space 120 is discharged from the top vent 102; through the above process, the inside of the shell 1 completes heat exchange with the outside through the first vent, and the heat in the shell 1 is discharged.

[0061] In a preferred embodiment, the first elastic member 41 and the second elastic member 42 are sequentially sleeved on the outer periphery of the magnetic circuit system 3 along the first direction, and the outer peripheries of the first elastic member 41 and the second elastic member 42 are sequentially fixed to the inner wall of the shell 13 along the first direction.

[0062] like Figure 7-8 As shown, one end of the coil 2 away from the magnetic circuit system 3 is bonded to the inner wall of the bottom cover 11; the frame inside the shell 13 has a top and a bottom distributed along the first direction, the U iron 33 has an annular protrusion on the periphery, the annular protrusion has a top and a bottom distributed along the first direction, the inner peripheral edge of the first elastic member 41 is bonded to the top of the annular protrusion of the U iron, and its outer peripheral edge is bonded to the top of the frame of the shell 13; the inner peripheral edge of the second elastic member 42 is bonded to the bottom end of the annular protrusion of the U iron, and its outer peripheral edge is bonded to the bottom end of the frame of the shell 13.

[0063] In a preferred embodiment, the coil 2 is fixed on the bottom cover 11 , and the coil 2 has a positive electrode and a negative electrode, and the positive electrode and the negative electrode are used to connect with external electrical components.

[0064] like Figure 18-21 As shown, a circuit board 5 is provided on the bottom cover 11, the winding is wound around the top of the coil skeleton, and the two free ends of the winding extend and are welded on the circuit board to form positive and negative electrodes; in this embodiment, a wiring harness 6 is also provided on the bottom cover 11, and the wiring harness 6 is used to electrically connect external electrical components to the positive and negative electrodes. In other embodiments of the present application, an electrical connection structure integrated with the bottom cover 11 can also be provided on the bottom cover 11, which is used to connect the positive and negative electrodes and external electrical components; the external electrical parts are power supplies or ECU controllers.

[0065] In a preferred embodiment, a fixing seat 14 is connected to the outer side of the bottom cover 11 or the top cover 12 .

[0066] like Figure 2 As shown, the fixing seat 14 is approximately a rectangular planar structure, and a buckle 113 and a connecting piece 114 are also provided on the fixing seat 14. The buckle 113 can be fixed to the shell 13 to connect the fixing seat 14 to the shell 1. The connecting piece 114 is usually in the form of a clamping piece, a hook, etc., and is used to connect with the seat frame or the lumbar support back plate; when a bottom vent 101 is opened on the bottom cover 12, a base vent 104 is also opened on the fixing seat 14. The number and shape of the openings of the base vent 104 are not limited. Based on the heat dissipation effect, the number of the base vent 104 should not be less than the bottom vent 101, and the position corresponds to the bottom vent 101; as shown in FIG. Fig. 22 As shown, since the coil 2 is the main heat-generating part of the exciter, more first vents are provided near the coil 2, which is more conducive to heat dissipation of the exciter.

[0067] Example 2

[0068] like Figure 23-26 As shown, when only the first air vent is provided on the top cover 12 and the shell 13, and the magnetic circuit system 3 is connected to the shell only through the first elastic member 41, when the magnetic circuit system 3 moves along the first direction toward the side close to the bottom cover 11, the first space 110 becomes smaller, the second space 120 increases, the heat in the first space 110 is discharged from the shell 1 through the middle air vent 103, and the cold air from the outside is sucked into the second space 120 through the top air vent 102; when the magnetic circuit system 3 moves along the first direction toward the side close to the top cover 12, the first space 110 increases, the second space 120 becomes smaller, the cold air from the outside is sucked into the first space 110 through the middle air vent 103, and the heat in the second space 120 is discharged from the shell 1 through the top air vent 102, thereby realizing heat exchange between the inside of the shell 1 and the outside.

[0069] Working principle: the alternating current generated by the external electrical components passes through the coil 2 through the wiring harness 6, and the coil 2 generates a first magnetic field with changing direction. The first magnetic field and the second magnetic field generated by the magnetic circuit system 3 sometimes attract each other and sometimes repel each other, so that the magnetic circuit system 3 reciprocates along the first direction in the shell 1; when the magnetic circuit system 3 moves toward the bottom cover 11, the first space 110 is squeezed and becomes smaller, and the second space 120 and the third space 130 are enlarged. The hot air in the first space 110 is discharged through the bottom vent 101 and the base vent 104 in turn, and the cold air from the outside enters the second space 120 and the third space 130 through the top vent 102 and the middle vent 103 respectively; when the magnetic circuit system 3 moves to the middle position in the shell 1, the first space 110 is enlarged, and the second space 120 and the third space 130 are squeezed. The extrusion becomes smaller, and the cold air from the outside enters the first space 110 through the base vent 104 and the bottom vent 101 in turn, and the hot air in the second space 120 and the third space 130 is discharged through the top vent 102 and the middle vent 103 respectively; when the magnetic circuit system 3 moves toward the top cover 12, the first space 110 continues to expand, the second space 120 is squeezed and becomes smaller, and the third space 130 expands again, and the cold air from the outside enters the first space 110 through the base vent 104 and the bottom vent 101 in turn, and enters the third space 130 through the middle vent 103, and the hot air in the second space 120 is discharged through the top vent, so that the first space 110, the second space 120 and the third space 130 can all generate heat exchange with the outside when the magnetic circuit system 3 moves, which is beneficial to the heat dissipation of the exciter.

[0070] Example 3

[0071] The present embodiment provides a car seat, including foam 8 and a frame 7, and also includes the above-mentioned low-frequency seat exciter, the foam 8 has a groove 115, the fixing seat 14 is fixed to the frame 7, and the low-frequency exciter has at least a portion extending into the groove 115, so that one side end face of the low-frequency exciter along the first direction contacts the bottom surface of the groove 115.

[0072] like Fig. 27 As shown, the fixing seat 14 can be fixedly connected to the bottom cover 11 or the top cover 12, and the inner wall of the groove 115 is consistent with the outer contour of the low-frequency seat exciter, so that the low-frequency seat exciter can be embedded in the groove 115, so that the outer end surface of the fixing seat 14 is in contact with the bottom surface of the groove 115; the fixing seat 14 is fixed to the frame 7, and the vibration can be transmitted through the frame when the exciter is working.

[0073] In a preferred embodiment, the contact surface between the foam 8 and the low-frequency seat exciter has a gas passage structure 116 or the contact surface between the low-frequency seat exciter and the foam 8 has a gas passage structure 116 .

[0074] like Fig.28As shown, the gas passage structure 116 is arranged on the contact surface between the foam 8 and the low-frequency seat exciter, and is a grid-shaped concave structure; Fig.29 As shown, the gas passage structure 116 is arranged on the contact surface between the low-frequency seat exciter and the foam 8, and is in the form of a plurality of cross-shaped protrusions distributed in an array; in the present embodiment, only two structures, namely, grid-shaped depressions and cross-shaped protrusions, are used as examples. In actual use, the gas passage structure 116 is not limited to the above two structures. Any structure that can realize the connection between the first air vent opened on the contact surface between the low-frequency seat exciter and the foam 8 and the outside world may be adopted, which may be in the form of a protrusion, a grid, a horizontal / vertical stripe, or a maze. A qualified gas passage structure 116 is one that can enable the heat inside the low-frequency seat exciter to be exchanged with the outside world through the first air vent on the contact surface when the low-frequency seat exciter moves in the first direction.

[0075] This article uses specific examples to illustrate the principles and implementation methods of this application. The description of the above embodiments is only used to help understand the method and its core ideas of this application. The above is only the preferred implementation method of this application. It should be pointed out that due to the limitations of textual expression and the objective existence of infinite specific structures, ordinary technicians in this technical field can make several improvements, modifications or changes without departing from the principles of the present invention, and can also combine the above technical features in an appropriate manner; these improvements, modifications, changes or combinations, or the direct application of the inventive concept and technical solution to other occasions without improvement, should be regarded as the scope of protection of this application.

Claims

1. A low-frequency seat exciter, characterized in that: include: A shell (1), wherein the shell (1) is provided with at least one first vent opening connecting the interior of the shell (1) with the outside; An excitation mechanism, the excitation mechanism being arranged in the housing (1); the excitation mechanism comprising a coil (2), an elastic limiting component (4) and a magnetic circuit system (3); The coil (2) is arranged in the housing (1) and is used to generate a magnetic field after being energized; the magnetic circuit system (3) is arranged in the housing (1) and is connected to the housing (1) via the elastic limit assembly (4); the magnetic circuit system (3) reciprocates along a first direction under the action of the magnetic field generated by the coil (2) to generate vibration and conduct it through the housing (1), while allowing air inside the housing (1) to be exchanged with the outside through the first vent.

2. A low-frequency seat exciter according to claim 1, characterized in that: The housing (1) has a top surface, a bottom surface and side surfaces surrounding the outer circumference thereof, and the first vent is opened on the top surface and / or the bottom surface and / or at least one of the side surfaces.

3. A low-frequency seat exciter according to claim 2, characterized in that: The housing (1) comprises a top cover (12), a shell (13) and a bottom cover (11) which are connected in sequence; the top cover (12) has the top surface, the bottom cover (11) has the bottom surface, and the shell (13) has the side surface.

4. A low-frequency seat exciter according to claim 3, characterized in that: The elastic limiting assembly (4) comprises a first elastic member (41), and the magnetic circuit system (3) is connected to the housing (13) via the first elastic member (41); the magnetic circuit system (3) and the first elastic member (41) together separate the space inside the housing (1) into a first space (110) and a second space (120).

5. A low-frequency seat exciter according to claim 4, characterized in that: The elastic limiting assembly (4) further comprises a second elastic member (42); the magnetic circuit system (3) is connected to the shell (13) via the first elastic member (41) and the second elastic member (42) distributed along the first direction; the first elastic member (41), the second elastic member (42), the magnetic circuit system (3) and the shell (13) together enclose a third space (130).

6. A low-frequency seat exciter according to claim 5, characterized in that: The first elastic member (41) and the second elastic member (42) are sequentially sleeved on the outer periphery of the magnetic circuit system (3) along the first direction, and the outer peripheries of the first elastic member (41) and the second elastic member (42) are sequentially fixed to the inner wall of the housing (13) along the first direction.

7. A low-frequency seat exciter according to claim 3, characterized in that: The coil (2) is fixed on the bottom cover (11), and the coil (2) has a positive electrode and a negative electrode, and the positive electrode and the negative electrode are used to connect to external electrical components.

8. A low-frequency seat exciter according to any one of claims 3 to 7, characterized in that: A fixing seat (14) is connected to the outer side of the bottom cover (11) or the top cover (12).

9. A car seat, comprising foam (8) and a frame (7), characterized in that: It also includes a low-frequency seat exciter as described in any one of claims 1 to 8, wherein the foam (8) has a groove (115), the low-frequency seat exciter is fixed to the frame (7), and the low-frequency seat exciter has at least a portion extending into the groove (115) so that a side end surface of the low-frequency seat exciter along the first direction contacts the bottom surface of the groove (115).

10. The vehicle seat according to claim 9, characterized in that: The contact surface between the foam (8) and the low-frequency seat exciter has a gas passage structure (116), or the contact surface between the low-frequency seat exciter and the foam (8) has a gas passage structure (116).

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