Automotive foot massage device and automobile seat

Abstract

The invention discloses an automotive foot massage device and an automobile seat, and relates to the technical field of automobile seat massage. The foot bottom massage device for the automobile is used for being installed in an automobile seat and comprises a shell, a driving part, a compound gear, a transmission gear assembly and a massage part, the driving part, the compound gear and the transmission gear assembly are arranged in the shell, the massage part is arranged outside the shell, a worm is arranged at the output end of the driving part, the compound gear comprises a worm wheel part and a straight tooth part which are arranged in a stacked mode and connected with each other, and the worm wheel part is connected with the transmission gear assembly. The worm is meshed with the worm gear part, the straight tooth part is meshed with the transmission gear assembly, the transmission gear assembly is in transmission connection with the massage part, and the driving part is used for driving the compound gear to move so as to drive the massage part to move through the transmission gear assembly. The foot massage device for the automobile has the advantage of being small in thickness and can be directly integrated in the automobile seat, the original outline design of the seat cannot be affected, and the leg movement space in the automobile can be prevented from being compressed.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of automobile seat massage, in particular to a vehicle foot massage device and an automobile seat. BACKGROUND

[0002] In the prior art, the foot massage function of an automobile seat is mostly realized by installing a massage core in an independent foot rest on the rear side of the seat. When in use, the user needs to first open the foot rest, and then use the mechanical movement of the massage core installed in the foot rest to exert a massage force on the foot. However, the prior art has the following defects: the independent foot rest structure needs to be separately reserved for installation, which increases the overall thickness of the seat, affects the original contour design of the seat, and may also compress the leg movement space in the vehicle. SUMMARY

[0003] The present application aims to provide a vehicle foot massage device and an automobile seat, which has the advantage of relatively thin thickness, can be directly integrated in the automobile seat, and will not affect the original contour design of the seat, nor compress the leg movement space in the vehicle.

[0004] The embodiment of the present application is implemented as follows: In a first aspect, the present application provides a vehicle foot massage device for installation in an automobile seat, comprising a housing, a driving member, a composite gear and a transmission gear assembly arranged in the housing, and a massage member arranged outside the housing, wherein the output end of the driving member is provided with a worm, the composite gear comprises a worm wheel part and a straight tooth part which are stacked and connected with each other, the worm is engaged with the worm wheel part, the straight tooth part is engaged with the transmission gear assembly, the transmission gear assembly is in transmission connection with the massage member, and the driving member is used to drive the composite gear to move, so as to drive the massage member to move through the transmission gear assembly. The vehicle foot massage device has the advantage of relatively thin thickness, can be directly integrated in the automobile seat, and will not affect the original contour design of the seat, nor compress the leg movement space in the vehicle.

[0005] As an implementable manner, the worm and the worm wheel part form a first plane, the straight tooth part and the transmission gear assembly form a second plane, and the first plane and the second plane are arranged in parallel and spaced apart along the stacking direction of the worm wheel part and the straight tooth part.

[0006] As an implementable mode, the number of the composite gears and the number of the transmission gear assemblies are both two, the two composite gears are symmetrically distributed on opposite sides of the worm along the extension direction of the worm, the two transmission gear assemblies are one-to-one corresponding to the two composite gears, the two transmission gear assemblies are symmetrically distributed along the extension direction of the worm, and are located on the side away from the worm of the corresponding composite gear.

[0007] As an implementable mode, the transmission gear assembly comprises a first spur gear and a second spur gear arranged on the side of the first spur gear away from the composite gear, and the straight tooth part, the first spur gear and the second spur gear are sequentially engaged.

[0008] As an implementable mode, the number of the second spur gears is two, the two second spur gears are symmetrically distributed along the line direction of the straight tooth part and the first spur gear, and the line direction of the two second spur gears is parallel to the extension direction of the worm.

[0009] As an implementable mode, the central shaft of the composite gear is fixedly connected with the shell and rotationally connected with the composite gear, the central shaft of the first spur gear is fixedly connected with the shell and rotationally connected with the first spur gear, and the central shaft of the second spur gear is rotationally connected with the shell and fixedly connected with the massage member.

[0010] As an implementable mode, a through hole is arranged on the shell, the central shaft of the second spur gear passes through the through hole and is fixedly connected with the massage member, a shaft sleeve is arranged on the central shaft of the second spur gear, and the shaft sleeve is located on the side of the second spur gear close to the massage member.

[0011] As an implementable mode, along the stacking direction of the worm gear part and the straight tooth part, gaskets are arranged on opposite sides of the composite gear and the transmission gear assembly.

[0012] In a second aspect, the application provides an automobile seat, which comprises a seat body and the automobile foot massage device described above, the automobile foot massage device is accommodated in the seat body and fixedly connected with the seat body, and a buffer layer is arranged on the automobile foot massage device. The automobile foot massage device has a relatively thin thickness, can be directly integrated in the automobile seat, does not affect the original contour design of the seat, and can avoid compressing the leg space in the automobile.

[0013] As an implementable mode, a supporting plate is arranged on the seat body, the supporting plate is located below the automobile foot massage device, and the supporting plate can be unfolded or folded relative to the seat body, and can support the legs of a user when unfolded.

[0014] The beneficial effects of the embodiments of the present application include: This vehicle foot massage device includes a housing, a driving member, a composite gear, and a transmission gear assembly disposed within the housing, and a massage member disposed outside the housing. A worm is disposed at the output end of the driving member. The composite gear includes a stacked and interconnected worm wheel portion and a spur gear portion. The worm meshes with the worm wheel portion, which meshes with the transmission gear assembly. The transmission gear assembly is in transmission connection with the massage member. The driving member is used to drive the composite gear, which in turn drives the massage member through the transmission gear assembly. The stacked composite gear design and the multi-stage transmission of the worm, worm wheel, and transmission gear assembly achieve a thinner design while ensuring the stability of the massage function. This allows for smooth integration into vehicle seats without affecting the seat's appearance or the interior space, effectively enhancing the comfort and functionality of the vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without creative work.

[0016] Figure 1 This is one of the structural schematic diagrams of the vehicle foot massage device provided in an embodiment of the present application; Figure 2 This is a second structural diagram of the vehicle foot massage device provided in an embodiment of the present application; Figure 3 This is a third structural diagram of the vehicle foot massage device provided in an embodiment of the present application; Figure 4 This is a fourth structural diagram of the vehicle foot massage device provided in an embodiment of the present application; Figure 5 This is one of the structural diagrams of the car seat provided in the embodiment of the present application; Figure 6 The second structural diagram of the car seat provided in the embodiment of the present application; Figure 7 This is the third structural schematic diagram of the car seat provided in the embodiment of the present application.

[0017] Icon: 1 - driving member; 101 - worm; 2 - composite gear; 201 - worm wheel part; 202 - straight tooth part; 3 - first straight gear; 4 - second straight gear; 5 - center shaft of second straight gear; 6 - shaft sleeve; 7 - gasket; 8 - base; 9 - cover; 10 - massage member; 11 - buffer layer; 12 - fastener; 13 - foot massage device for vehicle; 14 - seat body; 15 - supporting plate. DETAILED DESCRIPTION

[0018] To make the objectives, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some but not all of the embodiments of the present application. The components of the embodiments of the present application described and shown in the drawings herein can be arranged and designed in various different configurations. It should be noted that similar reference numerals and letters indicate similar items in the following drawings, thus, once an item is defined in one drawing, it need not be further defined and explained in subsequent drawings.

[0019] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the present application is usually placed, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "horizontal", "vertical" and the like do not mean that the components must be absolutely horizontal or vertical, but can be slightly inclined. The terms "first", "second", "third" and the like are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0020] In the description of the present application, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set", "mount", "connected", "connected" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the connection between two elements inside. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0021] Please refer to Figures 1 to 7The present invention provides an embodiment of a vehicle foot massage device 13 for installation in a vehicle seat. The device comprises a housing, a driving member 1, a composite gear 2, and a transmission gear assembly disposed within the housing, and a massage member 10 disposed outside the housing. The output end of the driving member 1 is provided with a worm 101. The composite gear 2 comprises a worm wheel portion 201 and a spur gear portion 202 that are stacked and interconnected. The worm 101 meshes with the worm wheel portion 201, and the spur gear portion 202 meshes with the transmission gear assembly. The transmission gear assembly is in transmission connection with the massage member 10. The driving member 1 is used to drive the composite gear 2 to move, thereby driving the massage member 10 through the transmission gear assembly. The vehicle foot massage device 13 has the advantage of being relatively thin and can be directly integrated into the vehicle seat. This not only does not affect the original contour design of the seat, but also avoids compressing the leg room in the vehicle.

[0022] It should be noted that the vehicle foot massage device 13 includes a shell, a driving member 1, a compound gear 2, a transmission gear assembly and a massage member 10, wherein the shell serves as the installation base of the device and may include a base 8 and a cover 9 that are interlocked with each other, the interior of which accommodates the driving member 1, the compound gear 2 and the transmission gear assembly, and the outside of which is installed with the massage member 10; the driving member 1, the compound gear 2 and the transmission gear assembly form a transmission chain, which ultimately drives the massage member 10 (such as a massage ball disc) to move to achieve the massage function.

[0023] A worm 101 is provided at the output end of the driving member 1, and the composite gear 2 includes a worm wheel portion 201 and a spur tooth portion 202 which are stacked and fixedly connected. The worm wheel portion 201 and the spur tooth portion 202 are coaxially arranged, wherein the worm 101 and the worm wheel portion 201 are meshed with each other to form a worm 101-worm wheel transmission structure; the spur tooth portion 202 is meshed with the transmission gear assembly, and the end of the transmission gear assembly away from the composite gear 2 is transmission-connected to the massage member 10 (such as by gear meshing, eccentric shaft connection, etc.).

[0024] After the driving member 1 (such as a motor) is started, the worm 101 at its output end rotates, which can drive the worm wheel portion 201 meshing with it to rotate, and then the composite gear 2 rotates as a whole; the spur tooth portion 202 rotates synchronously with the worm wheel portion 201, which can drive the driving transmission gear assembly meshing with it to rotate; the transmission gear assembly transmits power to the massage member 10, which can drive the massage member 10 to perform reciprocating motion or rotational motion, thereby achieving massage of the sole of the foot.

[0025] The composite gear 2 utilizes an integrated structure consisting of a stacked worm gear 201 and a spur gear 202. This integrates the vertical transmission from the worm 101 to the worm wheel (the worm 101 is arranged horizontally, and the worm gear 201 is subjected to vertical force) and the horizontal transmission from the spur gear 202 to the transmission gear assembly on the same axis. This reduces the vertical space occupied by the transmission structure (i.e., through the thickness of the seat). Compared to traditional separate gear sets, this design significantly reduces the overall thickness of the device, allowing it to be embedded directly into the interior of a car seat without disrupting the original contours of the seat.

[0026] Because the device is thin, it does not add any extra bulge or thickness to the seat when installed, thus ensuring that leg room is not compressed. This is particularly suitable for small cars or vehicles with limited rear space. When passengers are seated, the seat surface equipped with the vehicle foot massage device 13 remains in a natural state, without any foreign body sensation caused by the presence of the device, thus achieving both massage function and riding comfort.

[0027] The meshing of the worm 101 and the worm wheel 201 has the characteristics of a large transmission ratio and good self-locking performance, which can efficiently transmit the power of the driving member 1 to the composite gear 2, and prevent the massage member 10 from driving the driving member 1 in the reverse direction when the force is applied, thereby preventing the massage force from being attenuated; the meshing of the spur tooth portion 202 and the transmission gear assembly ensures that the power is stably transmitted to the massage member 10, making the massage action uniform and powerful, thereby improving the massage effect.

[0028] The gears mesh together to transmit power, and the stacked design of the composite gear 2 allows the transmission chain to be distributed in a plane (rather than the traditional three-dimensional intersection). This reduces interference between components within the housing and improves the stability and reliability of the device. Furthermore, the compact structure facilitates sealing of the housing, preventing dust and fabric fibers from the seat from entering the device and affecting gear operation, thereby extending its service life.

[0029] In summary, the vehicle foot massage device 13 includes a housing, a drive member 1, a composite gear 2, and a transmission gear assembly disposed within the housing, and a massage member 10 disposed outside the housing. The output end of the drive member 1 is provided with a worm 101. The composite gear 2 includes a worm wheel portion 201 and a spur gear portion 202 that are stacked and interconnected. The worm 101 meshes with the worm wheel portion 201, and the spur gear portion 202 meshes with the transmission gear assembly. The transmission gear assembly is in transmission connection with the massage member 10. The drive member 1 is used to drive the composite gear 2 to move, thereby driving the massage member 10 through the transmission gear assembly. Through the stacked design of the composite gear 2 and the multi-stage transmission of the worm 101, worm wheel, and transmission gear assembly, the stability of the massage function is ensured while achieving a thinner design. It can be smoothly integrated into a car seat without affecting the seat's appearance or the interior space, effectively improving the comfort and functionality of the car.

[0030] As an implementable method, Figure 2 As shown, the worm 101 and the worm wheel 201 form a first plane, and the spur tooth portion 202 and the transmission gear assembly form a second plane. Along the stacking direction of the worm wheel 201 and the spur tooth portion 202, the first plane and the second plane are parallel and spaced apart.

[0031] It should be noted that the meshing area between the worm 101 and the worm wheel 201 forms a first plane, i.e., the virtual plane where the tooth surfaces of the two contact each other. The meshing area between the spur tooth portion 202 and the transmission gear assembly forms a second plane, similarly, the virtual plane where the tooth surfaces of the two contact each other. Because the worm wheel 201 and spur tooth portion 202 of the composite gear 2 are stacked (i.e., stacked up and down along the same axis), when viewed along the stacking direction (or the axial direction of the composite gear 2), the first plane and the second plane are parallel to each other and separated by a certain distance, which is roughly equal to the stacking thickness of the worm wheel 201 and spur tooth portion 202. This layout design allows the transmission of the worm 101 and worm wheel 201 and the transmission of the spur tooth portion 202 and the transmission gear assembly to occur independently within two parallel planes, with power being transmitted vertically through the axially stacked structure of the composite gear 2.

[0032] The first and second planes are parallel and spaced apart, allowing the worm 101-worm gear drive and the spur gear assembly to be layered vertically (i.e., along the thickness of the device), avoiding overlap in the gear meshing areas. Compared to the three-dimensional cross-layout of traditional gear drives, this two-dimensional layered design minimizes the overall thickness of the device, making it more suitable for integration into the limited space of a car seat without compromising the seat's slim design.

[0033] The first and second planes are parallel and spaced apart, ensuring that the meshing between the worm 101 and the worm wheel 201, and the meshing between the spur gear portion 202 and the transmission gear assembly, do not interfere with each other. For example, the axial thrust of the worm 101 does not directly act on the transmission gear assembly, and the radial force of the transmission gear assembly does not affect the meshing accuracy of the worm wheel 201. This isolation reduces friction and vibration between components, minimizing problems such as jamming and abnormal noise, ensuring smoother movement of the massage element 10 and more uniform massage intensity.

[0034] The first plane and the second plane are parallel and spaced apart, and the power is transmitted from the worm 101 (i.e., the first plane) to the worm wheel part 201, then through the stacked structure of the compound gear 2 to the straight tooth part 202 (i.e., the second plane) along the axial direction of the compound gear 2, and finally transmitted to the massage member 10 through the transmission gear assembly, forming a compact transmission chain of "first plane-axial direction of compound gear 2-second plane". The path is short and the direction is clear, reducing the loss of power during transmission (such as energy waste caused by angle deviation), so that the power of the driving member 1 can be more efficiently converted into kinetic energy of the massage member 10, improving the massage effect.

[0035] The layered structure of the first plane and the second plane makes the installation position of each transmission component more clear. For example, the worm 101 and the worm wheel part 201 can be pre-installed in the first plane area, and the straight tooth part 202 and the transmission gear assembly can be pre-installed in the second plane area. When assembling, you only need to align the stacked structure of the compound gear 2 with the two planes to complete the connection, reducing the complex alignment steps. This modular design is suitable for mass production, reducing assembly errors and improving product consistency.

[0036] As an implementable manner, as shown in Figure 1 The number of compound gears 2 and transmission gear assemblies is two, the two compound gears 2 are symmetrically distributed on the opposite sides of the worm 101 along the extension direction of the worm 101, and the two transmission gear assemblies are one-to-one corresponding to the two compound gears 2.

[0037] It should be noted that the number of compound gears 2 and transmission gear assemblies is two, and they are one-to-one corresponding, that is, one compound gear 2 matches one transmission gear assembly. Each compound gear 2 is composed of a worm wheel part 201 and a straight tooth part 202 arranged in layers, and the worm wheel part 201 is engaged with the worm 101, and the straight tooth part 202 is engaged with the corresponding transmission gear assembly. The two compound gears 2 are symmetrically distributed on the opposite sides of the worm 101 along the extension direction of the worm 101 (i.e., the axial direction of the worm 101), for example, when the worm 101 extends horizontally, one compound gear 2 is located on the left side of the worm 101, and the other compound gear 2 is located on the right side of the worm 101, and the two are mirror image distributed with the axial direction of the worm 101 as the symmetry axis. The two transmission gear assemblies are also symmetrically distributed along the extension direction of the worm 101, and each transmission gear assembly is located on the side away from the worm 101 of the corresponding compound gear 2, for example, the transmission gear assembly of the left compound gear 2 is located on the left side of the left compound gear 2, and the transmission gear assembly of the right compound gear 2 is located on the right side of the right compound gear 2, forming a symmetrical chain layout of "worm 101-compound gear 2-transmission gear assembly".

[0038] The two composite gears 2 are symmetrically located on opposite sides of the worm 101. When the worm 101 rotates, the reaction forces exerted by the composite gears 2 on both sides are equal in magnitude and opposite in direction. This counteracts any unilateral force applied to the worm 101 (e.g., in traditional single-gear transmissions, the worm 101 is prone to tilting due to unilateral force). This reduces wear on the worm 101 and the output end of the driver 1, extending the life of the device. Furthermore, the symmetrical force distribution ensures a more stable meshing between the worm wheel portion 201 of the composite gear 2 and the worm 101, preventing an increase in meshing clearance or jamming caused by uneven force distribution.

[0039] Two transmission gear assemblies are symmetrically located on either side of the device, each driving the massage elements 10 on the corresponding side (e.g., the left transmission gear assembly drives the left half of the massage elements 10, while the right transmission gear assembly drives the right half). This allows the massage elements 10 to be distributed over a wider area, adequately covering both sides of the sole (e.g., both sides of the forefoot and the edge of the arch). Compared to a single transmission structure, this design achieves comprehensive foot massage, avoiding blind spots and improving both comfort and comprehensiveness.

[0040] The symmetrical layout makes the device's overall structure more compact and balances its center of gravity. Because the components extend symmetrically on both sides, rather than being stacked on one side, the dimensions along the extension direction of worm 101 are controllable, allowing it to better fit into the narrow installation space within a car seat (such as the area under the seat). Furthermore, the transmission gear assembly is located on the side of composite gear 2 away from worm 101, avoiding spatial overlap with components such as worm 101 and driver 1, reducing internal interference and facilitating a miniaturized housing design.

[0041] Symmetrical distribution ensures a consistent transmission ratio. The two composite gears 2 receive the same power from the worm 101, which is then transmitted to the massage elements 10 on both sides via the corresponding transmission gear assembly. This ensures that the movement amplitude, frequency, and force of the massage elements 10 on the left and right sides are essentially consistent (for example, achieving the same pressing depth or vibration frequency). This uniformity avoids the problem of excessive or insufficient massage on one side, and improves the coordination of the massage experience.

[0042] As an implementable method, Figure 1 and Figure 2 As shown, the transmission gear assembly includes a first spur gear 3 and a second spur gear 4 arranged on a side of the first spur gear 3 away from the composite gear 2 , and the spur tooth portion 202 , the first spur gear 3 and the second spur gear 4 are meshed in sequence.

[0043] It should be noted that each transmission gear assembly includes a first spur gear 3 and a second spur gear 4, wherein the second spur gear 4 is located on the side of the first spur gear 3 away from the composite gear 2, i.e. the composite gear 2, the first spur gear 3 and the second spur gear 4 are arranged in sequence in the direction away from the worm 101. The straight tooth part 202 of the composite gear 2 is engaged with the first spur gear 3, and the first spur gear 3 is engaged with the second spur gear 4, forming a transmission link of "straight tooth part 202 - first spur gear 3 - second spur gear 4". Both transmission gear assemblies follow this structure and cooperate with the corresponding composite gear 2 to transmit power to the subsequent massage member 10, which will not be described here.

[0044] Through the sequential engagement of the first spur gear 3 and the second spur gear 4, the transmission gear assembly can transmit power in the direction away from the composite gear 2 and the worm 101, prolonging the transmission path. This enables the massage member 10 to be arranged at a more reasonable position according to the foot massage needs (such as covering the front end to the rear end of the foot), rather than being limited to the vicinity of the composite gear 2, thereby expanding the massage range, while avoiding the spatial conflict between the massage member 10 and the internal gear parts.

[0045] The multi-stage spur gear engagement can adjust the transmission ratio through the difference in the number of gear teeth (such as the different number of teeth of the first spur gear 3 and the second spur gear 4). For example, if the output force of the massage member 10 needs to be increased, a speed reduction transmission (i.e. a small gear driving a large gear) can be designed; if the massage frequency needs to be improved, a speed increase transmission (i.e. a large gear driving a small gear) can be designed. This adjustability enables the massage device to adapt to the needs of different users for massage intensity and rhythm, improving the personalization of experience.

[0046] The straight tooth part 202, the first spur gear 3 and the second spur gear 4 are engaged in sequence, dividing the power transmission process into multiple stages, and the load borne by each gear is smaller than that of single-stage transmission, which can reduce the wear of individual gears (such as tooth surface fatigue and deformation). At the same time, multi-stage engagement makes the transmission link more stable, so that even if a gear is slightly displaced due to vibration, it can be compensated by the engagement of the subsequent gears, reducing the risk of transmission interruption and ensuring the continuity of the movement of the massage member 10.

[0047] The first spur gear 3 and the second spur gear 4 are both spur gears, and the contact direction of the tooth surface is parallel to the gear axis when engaged, and the transmission plane (i.e. the plane where the engagement area is located) is parallel to the first plane and the second plane. This design does not increase the space occupation in the thickness direction of the device (i.e. the direction perpendicular to the gear plane), avoiding the thickening of the device caused by multi-stage transmission.

[0048] The straight gear has simple structure and clear meshing relationship. The assembly of the first straight gear 3 and the second straight gear 4 only needs to be aligned and meshed in sequence, without the need for complex angle adjustment. In the later maintenance, if a certain stage gear fails (such as jamming or wear), the corresponding gear can be replaced alone without the need to disassemble the entire transmission assembly, thereby reducing the maintenance cost.

[0049] As an implementable manner, as shown in Figure 1 The number of the second straight gears 4 is two, and the two second straight gears 4 are symmetrically distributed along the line connecting direction of the straight tooth part 202 and the first straight gear 3. The line connecting direction of the two second straight gears 4 is parallel to the extension direction of the worm 101.

[0050] It should be noted that each transmission gear assembly includes two second straight gears 4, which are symmetrically distributed along the line connecting direction of the straight tooth part 202 and the first straight gear 3 (i.e., the transmission direction of the straight tooth part 202 and the first straight gear 3). At the same time, the line connecting direction of the two second straight gears 4 is parallel to the extension direction of the worm 101, forming a transverse symmetric structure consistent with the direction of the worm 101. Both of the two second straight gears 4 are meshed with the first straight gear 3, that is, the first straight gear 3 simultaneously drives the two symmetrically distributed second straight gears 4, forming a transmission link of “straight tooth part 202-first straight gear 3-two second straight gears 4”, and then the two second straight gears 4 drive the corresponding massage members 10 respectively, which can further expand the massage coverage. In combination with the symmetric layout of the two transmission gear assemblies described above, the overall device can form a multi-massage point distribution of “left-right symmetry + inside-outside symmetry”, which is suitable for the complex physiological structure of the foot bottom to avoid the existence of massage blind area.

[0051] The first straight gear 3 simultaneously drives the two second straight gears 4, disperses the power to two branches, and each second straight gear 4 bears a smaller torque than a single second straight gear 4, which can reduce the risk of tooth surface wear and deformation. At the same time, the symmetric distribution balances the reaction force on the first straight gear 3 (the size of the force on both sides is equal, and the direction is opposite), avoiding the tilting of the gear or the increase of the meshing gap caused by unilateral force, thereby prolonging the overall life of the transmission gear assembly.

[0052] The line connecting direction of the two second straight gears 4 is parallel to the extension direction of the worm 101, so that the transverse size (along the extension direction of the worm 101) of the transmission gear assembly is consistent with the overall layout of the device, avoiding excessive expansion in the direction perpendicular to the worm 101, which can adapt to the narrow installation space in the car seat (such as the area extending along the leg under the seat). At the same time, the symmetric distribution makes the internal structure of the device more regular, which is convenient for the standardized design and mass production of the shell.

[0053] The two second spur gears 4 are driven by the same first spur gear 3, and the symmetrical distribution ensures that the rotation speeds and directions of the two are completely consistent (i.e., the transmission ratio is the same), which can drive the corresponding massage members 10 to realize synchronous movement (such as simultaneous pressing and vibration at the same frequency). Such synchronization avoids the problem of disordered massage rhythm of different parts of the sole and improves the coordination of the massage experience, and is especially suitable for scenarios that require symmetrical acupoint massage (such as symmetrical pressing of the sides of the Yongquan acupoint of the sole).

[0054] As an implementable manner, as shown in Figure 2 The central shaft of the composite gear 2 is fixedly connected with the shell and rotationally connected with the composite gear 2, the central shaft of the first spur gear 3 is fixedly connected with the shell and rotationally connected with the first spur gear 3, and the central shaft 5 of the second spur gear is rotationally connected with the shell and fixedly connected with the massage member 10.

[0055] It should be noted that the central shaft of the composite gear 2 is fixedly connected with the shell (such as the two ends of the central shaft being embedded in the mounting holes of the shell) and rotationally connected with the composite gear 2, that is, the central shaft is fixed and the composite gear 2 rotates freely around the central shaft. This design enables the composite gear 2 to stably rotate around the fixed central shaft under the drive of the worm 101, ensuring that the meshing position of the worm gear part 201 and the worm 101 remains unchanged.

[0056] The central shaft of the first spur gear 3 is also fixedly connected with the shell and rotationally connected with the first spur gear 3, that is, the central shaft is fixed and the first spur gear 3 rotates around the central shaft, ensuring that the meshing relationship between the first spur gear 3 and the straight tooth part 202 of the composite gear 2 and the second spur gear 4 is stable, avoiding transmission misalignment caused by shaft deviation.

[0057] The central shaft 5 of the second spur gear is rotationally connected with the shell, that is, the central shaft 5 of the second spur gear can rotate with the gear of the second spur gear 4, and is fixedly connected with the massage member 10 (such as the one end of the central shaft 5 of the second spur gear being rigidly connected with the bottom of the massage member 10). When the second spur gear 4 rotates, the central shaft 5 of the second spur gear rotates synchronously, thereby driving the massage member 10 to move (such as rotating, reciprocating swinging), realizing the final transmission of power to the massage member 10.

[0058] As an implementable manner, as shown in Figures 2 to 4 The shell is provided with a through hole, the central shaft 5 of the second spur gear passes through the through hole and is fixedly connected with the massage member 10, a shaft sleeve 6 is sleeved on the central shaft 5 of the second spur gear, and the shaft sleeve 6 is located on the side of the second spur gear 4 close to the massage member 10.

[0059] It should be noted that the shell is provided with a through hole, the size of the through hole is matched with the size of the center shaft 5 of the second spur gear, the end of the center shaft 5 of the second spur gear away from the second spur gear 4 passes through the through hole, extends to the outside of the shell and is fixedly connected (such as through threaded connection, buckle fixing) with the massage member 10, so that the rotating motion of the second spur gear 4 is transmitted to the massage member 10 outside the shell through the center shaft 5 of the second spur gear. The shaft sleeve 6 (such as wear-resistant plastic or metal sleeve) is sleeved on the center shaft 5 of the second spur gear, the shaft sleeve 6 is located between the second spur gear 4 and the massage member 10, and is located in the through hole of the shell or is close to the inner wall of the shell, that is, the shaft sleeve 6 is clamped between the second spur gear 4 and the shell, so that the direct contact between the center shaft 5 of the second spur gear and the shell is isolated. When the center shaft 5 of the second spur gear rotates with the second spur gear 4, the shaft sleeve 6 forms a friction surface with the shell (or the inner wall of the through hole), rather than the center shaft 5 of the second spur gear directly rubbing the shell. Since the shaft sleeve 6 is usually made of wear-resistant material (such as nylon, brass), its wear rate is much lower than that of the center shaft 5 of the second spur gear or the shell, which can avoid the wear and deformation (such as shaft diameter becoming smaller, surface roughness) of the center shaft 5 of the second spur gear caused by long-term rotation, and also prevents the through hole of the shell from being worn out, thereby ensuring the matching precision of the two.

[0060] As an implementable manner, as shown in the figure, Figure 2 As shown in the figure, along the stacking direction of the worm gear part 201 and the spur gear part 202, the opposite sides of the composite gear 2 and the transmission gear assembly are both provided with gaskets 7.

[0061] It should be noted that, along the stacking direction of the worm gear part 201 and the spur gear part 202 (i.e. the axial direction of the composite gear 2), gaskets 7 (such as annular gaskets 7, flat gaskets 7) are arranged on the opposite sides of the composite gear 2 and the transmission gear assembly (i.e. the two sides close to the top and bottom of the shell). These gaskets 7 are respectively located on the axial sides of the composite gear 2 (i.e. the side of the worm gear part 201 away from the spur gear part 202 and the side of the spur gear part 202 away from the worm gear part 201) and the axial sides of the gears (including the first spur gear 3 and the second spur gear 4) in the transmission gear assembly, and are clamped between the gears and the inner wall of the shell or adjacent components.

[0062] The gaskets 7 are usually made of wear-resistant and elastic materials (such as graphite, rubber, nylon, metal sheet) and have a relatively small thickness, which does not affect the axial arrangement of the gears and mainly plays an isolation and buffering role. When the composite gear 2 and the transmission gear assembly rotate, the axial sides thereof may rub against the inner wall of the shell or adjacent components (such as the end surface of the worm gear part 201 rubbing against the shell when the composite gear 2 rotates). The arrangement of the gaskets 7 can convert direct friction into friction between the gaskets 7 and the gears and between the gaskets 7 and the shell. Since the gaskets 7 are made of wear-resistant materials and have a low friction coefficient, the wear of the end surfaces of the gears and the shell can be significantly reduced, thereby prolonging the service life of the components.

[0063] As shown in the figure, Figures 5 to 7 As shown, the application also provides a car seat, which comprises a seat body 14 and the above-mentioned car foot massage device 13. The car foot massage device 13 is accommodated in the seat body 14 and fixedly connected with the seat body 14. The car foot massage device 13 is covered with a buffer layer 11.

[0064] It should be noted that the car seat comprises a seat body 14 (such as a seat cushion, a backrest, a seat framework, etc.) and a car foot massage device 13. The car foot massage device 13 is integrated in the seat body 14 as a functional component, for example, accommodated in the lower area of the seat body 14 (corresponding to the position where the feet of the rear passengers are placed), and fixedly connected with the seat framework or the spring backboard of the seat body 14 by means of fasteners 12 (such as bolts), clamping pieces (such as buckles), etc., to ensure that the device does not displace during the driving of the car. The surface of the car foot massage device 13 (i.e. the side facing the feet of the passengers) is covered with a buffer layer 11, which can be made of soft and elastic materials such as sponge, memory foam or latex, or can be made of a composite of elastic cloth and wear-resistant cloth. The thickness is moderate, which covers the massage pieces 10 of the massage device and allows the movement (such as protrusion and rotation) of the massage pieces 10 to be transmitted to the feet through the buffer layer 11, while avoiding direct contact of the passengers with the hard device housing or gear components.

[0065] As an implementable manner, as shown in Figure 7 As shown, the seat body 14 is provided with a supporting plate 15 located below the car foot massage device 13. The supporting plate 15 can be unfolded or folded relative to the seat body 14. When the supporting plate 15 is unfolded, it can support the legs of the user.

[0066] It should be noted that the seat body 14 is provided with a supporting plate 15, which is installed below the car foot massage device 13 (i.e. close to the side of the seat bottom). It is usually connected with the seat framework or the front end frame of the seat body 14 by means of hinges, slide rails or other structures, and can rotate or slide relative to the seat body 14 around the connection point to switch between the unfolded and folded states. When the supporting plate 15 is folded, it can be attached to the back of the seat body 14 or stored below the seat cushion, without occupying extra space and keeping the layout of the car neat. When the supporting plate 15 is unfolded, one end thereof extends outward to form an inclined or horizontal support plane. When the user lies in a lying position on the rear seat, the supporting plate 15 located on the front seat is below the user's legs, which is used to lift the user's shanks and feet, so that the car foot massage device 13 can massage the feet.

[0067] The above description is merely an optional embodiment of the present application and is not intended to limit the present application. Various modifications and variations are possible for those skilled in the art. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application shall be included within the scope of protection of the present application.

[0068] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any appropriate manner unless there is any contradiction. In order to avoid unnecessary repetition, this application will not further describe various possible combinations.

Claims

1. A car foot massage device for installation in a car seat, characterized in that: It includes a shell, a driving member, a composite gear and a transmission gear assembly arranged in the shell, and a massage member arranged outside the shell, a worm is provided at the output end of the driving member, the composite gear includes a worm wheel portion and a spur tooth portion which are stacked and connected to each other, the worm is engaged with the worm wheel portion, the spur tooth portion is engaged with the transmission gear assembly, the transmission gear assembly is connected to the massage member, and the driving member is used to drive the composite gear to move, so as to drive the massage member to move through the transmission gear assembly.

2. The vehicle foot massage device according to claim 1, characterized in that: The worm and the worm wheel portion form a first plane, the spur tooth portion and the transmission gear assembly form a second plane, and along a stacking direction of the worm wheel portion and the spur tooth portion, the first plane and the second plane are parallel and spaced apart.

3. The vehicle foot massage device according to claim 1, characterized in that: There are two of the compound gears and the transmission gear assemblies. The two compound gears are symmetrically distributed on opposite sides of the worm along the extension direction of the worm. The two transmission gear assemblies are arranged in a one-to-one correspondence with the two compound gears. The two transmission gear assemblies are symmetrically distributed along the extension direction of the worm and are located on the side of the corresponding compound gear away from the worm.

4. The vehicle foot massage device according to claim 1, characterized in that: The transmission gear assembly includes a first spur gear and a second spur gear disposed on a side of the first spur gear away from the composite gear. The spur tooth portion, the first spur gear, and the second spur gear are meshed in sequence.

5. The vehicle foot massage device according to claim 4, characterized in that: There are two second spur gears, and the two second spur gears are symmetrically distributed along the connecting line between the spur tooth portion and the first spur gear. The connecting line between the two second spur gears is parallel to the extending direction of the worm.

6. The vehicle foot massage device according to claim 4, characterized in that: The central axis of the composite gear is fixedly connected to the housing and is rotationally connected to the composite gear. The central axis of the first spur gear is fixedly connected to the housing and is rotationally connected to the first spur gear. The central axis of the second spur gear is rotationally connected to the housing and is fixedly connected to the massage part.

7. The vehicle foot massage device according to claim 4, characterized in that: The shell is provided with a through hole, the central axis of the second spur gear passes through the through hole and is fixedly connected to the massage piece. The central axis of the second spur gear is sleeved with a shaft sleeve, and the shaft sleeve is located on the side of the second spur gear close to the massage piece.

8. The vehicle foot massage device according to claim 1, characterized in that: Along a stacking direction of the worm gear portion and the spur gear portion, washers are provided on opposite sides of the composite gear and the transmission gear assembly.

9. A car seat, characterized in that: It comprises a seat body and the vehicle foot massage device according to any one of claims 1 to 8, wherein the vehicle foot massage device is accommodated in the seat body and fixedly connected to the seat body, and the vehicle foot massage device is covered with a buffer layer.

10. The vehicle seat according to claim 9, characterized in that A supporting plate is provided on the seat body and is located below the vehicle foot massage device. The supporting plate can be unfolded or retracted relative to the seat body and can support the user's legs when unfolded.

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