Automobile seat mechanical massage device

Abstract

The application provides a mechanical massage device for a car seat, comprising: a first cycloid structure arranged in a shell assembly, the first cycloid structure having a first abutting side wall; a massage piece rotatably arranged on the shell assembly, a convex part being used for massage; an inner surface of the massage piece being provided with a second cycloid structure, the second cycloid structure having a second abutting side wall; a transmission assembly being arranged in the shell assembly and being matched with the first abutting side wall and the second abutting side wall respectively; the transmission assembly being capable of driving the massage piece to rotate at different speeds relative to the shell assembly when rotating. The characteristics of the cycloid shape structure are utilized, the torque of the massage piece when rotating is increased through the cooperation between the mechanical structures while the rotating speed is reduced; the massage piece is capable of overcoming the resistance to slowly rotate, and the massage function is completed.

Description

Technical Field

[0001] This invention generally relates to the field of massage device technology, and specifically to a mechanical massage device for a car seat. Background Technology

[0002] Existing massagers can be placed on the back of various types of chairs, leg rests, etc.; they can also be used alone to massage the head, arms, etc.

[0003] Existing massage devices all contain motors, which rotate to drive the massage components and perform the massage function. However, most existing motors have relatively high rotation speeds and low torque. When applied to a massage device and the body rests against the surface of the massage components, the motor encounters significant resistance. The torque provided by the motor is insufficient to overcome this resistance and continue the massage. Furthermore, the high rotation speed may also cause discomfort to the user. Utility Model Content

[0004] In view of the above-mentioned defects or deficiencies in the prior art, it is desirable to provide a mechanical massage device for car seats.

[0005] This invention provides a mechanical massage device for car seats, comprising: A housing assembly, wherein a first cycloidal structure is provided within the housing assembly; the first cycloidal structure has a first abutting sidewall; A massage element is rotatably mounted on the housing assembly and partially protrudes from the housing assembly for performing massage; the surface of the massage element near the inner side of the housing assembly is provided with a second cycloidal structure, the second cycloidal structure having a second abutting sidewall; A transmission assembly is installed inside the housing assembly and engages with the first abutting sidewall and the second abutting sidewall respectively; when rotating, the transmission assembly drives the massage element to rotate relative to the housing assembly at an angular velocity less than the rotational angular velocity of the transmission assembly. A driving device, which is connected to the transmission assembly, is used to drive the transmission assembly to rotate.

[0006] According to the technical solution provided by the present invention, the housing assembly includes: The top and bottom housings are detachably connected. The top housing is annular, and the inner edge of the annular top housing abuts against the edge of the massage element and can slide relative to it.

[0007] According to the technical solution provided by the present invention, the first cycloidal structure is a first transmission groove formed inside the bottom housing; the inner sidewall of the first transmission groove forms the first abutting sidewall; The second cycloidal structure is a second transmission groove formed on the side of the massage member near the bottom housing; the inner sidewall of the second transmission groove forms the second abutment sidewall.

[0008] According to the technical solution provided by the present invention, the transmission assembly includes: An eccentric sleeve has a first through hole at a non-central position; the driving end of the driving device is inserted into the first through hole and fixedly connected to the eccentric sleeve. A cycloidal wheel has a second through hole at its center; an eccentric sleeve is rotatably installed in the second through hole; the cycloidal wheel abuts against the side wall of the first transmission groove and the inner side wall of the second transmission groove respectively; The driving device is used to drive the eccentric sleeve to rotate and drive the cycloidal wheel to roll along the side wall of the first transmission groove; the cycloidal wheel interacts with the second transmission groove to drive the massage component to rotate.

[0009] According to the technical solution provided by the present invention, the cycloidal wheel includes a first wheel body and a second wheel body; the first wheel body and the second wheel body are coaxially arranged and fixedly connected to each other; The first wheel has multiple first protrusions; the second wheel has multiple second protrusions; the first protrusions and the second protrusions are staggered relative to each other.

[0010] According to the technical solution provided by the present invention, the sidewall of the first transmission groove has a plurality of third protrusions; the sidewall of the second transmission groove has a plurality of fourth protrusions. The number of the first protrusions is less than the number of the third protrusions; The number of the second protrusions is less than the number of the fourth protrusions.

[0011] According to the technical solution provided by the present invention, the portion of the massage member protruding from the housing assembly has two or more massage protrusions.

[0012] According to the technical solution provided by the present invention, the massage protrusion is rotatably mounted on the massage element.

[0013] According to the technical solution provided by the present invention, it also includes: A second housing, wherein the housing assembly is movably mounted within the second housing; A telescopic device is disposed inside the second housing and located between the outer side wall of the housing assembly and the inner side wall of the second housing. It is used to drive the housing assembly, the massage member and the transmission assembly to move relative to the second housing, so that the massage member protrudes out of the second housing or retracts into the second housing.

[0014] According to the technical solution provided by the present invention, the telescopic device includes: An air bag is disposed between the inner wall of the second housing and the outer wall of the housing assembly, and is used to move the housing assembly, the massage component and the transmission component relative to the second housing during the inflation process; A first elastic element is disposed between the inner sidewall of the second housing and the outer sidewall of the housing assembly, and its two ends are respectively connected to the inner sidewall of the second housing and the outer sidewall of the housing assembly, for driving the housing assembly, the massage element and the transmission assembly to retract into the second housing.

[0015] The beneficial effects of this invention are as follows: The housing assembly contains a first cycloidal structure with a first abutting sidewall. A massage element is rotatably mounted on the housing assembly, with a protruding portion for massage. The inner surface of the massage element has a second cycloidal structure with a second abutting sidewall. A transmission assembly is installed within the housing assembly and engages with both the first and second abutting sidewalls. When rotated, the transmission assembly drives the massage element to rotate relative to the housing assembly at different speeds. Utilizing the characteristics of the cycloidal shape, while reducing the rotational speed, the torque of the massage element during rotation is increased through the coordination of the mechanical structures, allowing the massage element to overcome resistance and rotate slowly, thus completing the massage function. Attached Figure Description

[0016] Other features, objects, and advantages of the invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings: Figure 1 A schematic diagram of a chair equipped with a massage device; Figure 2 This is a schematic diagram of the massage device. Figure 3 An exploded view of the massage device; Figure 4 This is a schematic diagram of the back of the massage device; Figure 5 This is a schematic diagram of the drive device. Figure 6 This is a cross-sectional view of the drive unit; Figure 7 This is another schematic diagram of the massage device; Figure 8 This is a front view of the massage piece. Figure 9 This is a front view of the back of the massage piece; Figure 10 This is a schematic diagram of the bottom shell structure; Figure 11This is a schematic diagram of the bottom structure of the housing assembly; Figure 12 This is a cross-sectional view of the telescopic device in its retracted state. Figure 13 This is a cross-sectional view of the telescopic device when it is in the expanded state. Figure 14 A schematic diagram showing a massage protrusion that can be rotatably mounted on a massage component; Figure 15 Cross-sectional view of a massage protrusion rotatably mounted on a massage component; Figure 16 An exploded view of the massage device in another embodiment; Figure 17 This is a schematic diagram of an eccentric sleeve in another implementation method; The components are as follows: 1. Top shell; 2. First transmission groove; 3. Massage component; 4. Second transmission groove; 5. Drive device; 6. Eccentric sleeve; 7. Cycloidal wheel; 8. First through hole; 9. Second through hole; 10. First wheel body; 11. Second wheel body; 12. First protrusion; 13. Second protrusion; 14. Third protrusion; 15. Fourth protrusion; 16. Massage protrusion; 17. Heat dissipation hole; 18. Oil reservoir; 19. Reinforcing rib; 20. Second shell; 21. Air bag; 22. Wire; 23. Bottom shell; 24. First elastic element; 25. Air circuit controller; 26. Air storage device; 27. Air pump; 28. Second elastic element; 29. ​​Third elastic element. Detailed Implementation

[0017] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, only the parts relevant to the invention are shown in the accompanying drawings.

[0018] It should be noted that, unless otherwise specified, the embodiments and features described in the present invention can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0019] Please refer to Figure 1-3 The present invention provides a mechanical massage device for car seats, comprising: A housing assembly, wherein a first cycloidal structure is provided within the housing assembly; the first cycloidal structure has a first abutting sidewall; refer to Figure 4 Massage component 3 is rotatably mounted on the housing assembly and partially protrudes from the housing assembly for massaging purposes; the surface of the massage component 3 near the inner side of the housing assembly is provided with a second cycloidal structure, the second cycloidal structure having a second abutting sidewall; A transmission assembly is installed inside the housing assembly and engages with the first abutting sidewall and the second abutting sidewall respectively; when rotating, the transmission assembly drives the massage element 3 to rotate relative to the housing assembly at an angular velocity less than the rotational angular velocity of the transmission assembly. Drive unit 5, reference Figure 5-6 The driving device 5 is connected to the transmission assembly and is used to drive the transmission assembly to rotate.

[0020] The drive unit 5 is a flat motor or a regular motor. The drive unit 5 is connected to a wire 22, which is electrically connected to a power source to supply power to the drive unit 5.

[0021] Specifically, the transmission component works in conjunction with both the first and second cycloidal structures to achieve transmission; while reducing the rotational speed, the torque of the massage component during rotation is increased through the cooperation between the mechanical structures; this allows the massage component to overcome resistance and rotate slowly to complete the massage function.

[0022] Further, the housing assembly includes: The top housing 1 and the bottom housing 23 are detachably connected; The top housing 1 is annular, and the inner edge of the annular top housing 1 abuts against the edge of the massage member 3 and can slide relative to it.

[0023] Specifically, such as Figure 3 As shown, the inner edge of the top housing 1 has a stepped groove facing the bottom housing 23, and the edge of the massage member 3 has a circumferential protrusion. This circumferential protrusion abuts against the stepped groove, defining the relative position of the massage member 3 and the top housing 1, and allowing the massage member 3 to rotate relative to the top housing 1.

[0024] In some embodiments, the first cycloidal structure is a first transmission groove 2 formed inside the bottom housing 23; the inner sidewall of the first transmission groove 2 forms the first abutting sidewall. The second cycloidal structure is a second transmission groove 4 formed on the side of the massage member 3 near the bottom housing 23; the inner sidewall of the second transmission groove 4 forms the second abutment sidewall.

[0025] In other embodiments, the first cycloidal structure may consist of multiple columns evenly distributed along the inner wall of the housing assembly. The second cycloidal structure may be a multiple column structure mounted on the inner sidewall of the massage member 3.

[0026] Furthermore, the transmission assembly includes: An eccentric sleeve 6 has a first through hole 8 at a non-central position; the driving end of the driving device 5 is inserted into the first through hole 8 and is fixedly connected to the eccentric sleeve 6. The cycloidal wheel 7 has a second through hole 9 at its center; the eccentric sleeve 6 is rotatably installed in the second through hole 9; the cycloidal wheel 7 abuts against the side wall of the first transmission groove 2 and the inner side wall of the second transmission groove 4 respectively. refer to Figure 3 and Figure 7 The driving device 5 is used to drive the eccentric sleeve 6 to rotate and drive the cycloidal wheel 7 to roll along the inner side wall of the first transmission groove 2; the cycloidal wheel 7 interacts with the second transmission groove 4 to drive the massage component 3 to rotate.

[0027] The outer edge of the eccentric sleeve 6 is circular, and the sidewall edge of the first through hole 8 is also circular; the centers of the two circles do not coincide.

[0028] In another implementation, refer to Figure 16-17 When the drive unit 5 uses a common motor, the eccentric sleeve 6 has an embedding groove to allow the common motor to be partially embedded, saving space; at the same time, the motor housing is at least partially embedded in the housing assembly. Alternatively, the length of the common motor can be reduced before it is installed in the housing assembly.

[0029] Furthermore, the cycloidal wheel 7 includes a first wheel body 10 and a second wheel body 11; the first wheel body 10 and the second wheel body 11 are coaxially arranged and fixedly connected to each other; The first wheel body 10 has a plurality of first protrusions 12; the second wheel body 11 has a plurality of second protrusions 13; the first protrusions 12 and the second protrusions 13 are staggered relative to each other.

[0030] Specifically, such as Figure 3 As shown, the first protrusion 12 and the second protrusion 13 are both cycloidal in shape. The edges of the multiple first protrusions 12 are smoothly connected to form a closed curve with multiple concave and convex features. Similarly, the edges of the multiple second protrusions 13 are also smoothly connected to form a closed curve with multiple concave and convex features.

[0031] Further, refer to Figure 4 , Figure 9 , Figure 10 The sidewall of the first transmission groove 2 has a plurality of third protrusions 14; the sidewall of the second transmission groove 4 has a plurality of fourth protrusions 15. The number of the first protrusions 12 is less than the number of the third protrusions 14; The number of the second protrusion 13 is less than the number of the fourth protrusion 15.

[0032] Based on the above structural design, the cycloidal wheel 7 can roll along the inner sidewall of the cycloidal shape of the first transmission groove 2.

[0033] The specific transmission method is as follows: the drive shaft of the drive device 5 is fixedly connected to the eccentric sleeve 6, driving the eccentric sleeve 6 to rotate eccentrically. Since the outer wall of the eccentric sleeve 6 and the inner wall of the second through hole 9 of the cycloidal wheel 7 can rotate relative to each other, the eccentric sleeve 6 drives the cycloidal wheel 7 to move along the inner wall of the cycloidal shape of the first transmission groove 2 during the eccentric rotation. The trajectory of the center point of the cycloidal wheel 7 is circular.

[0034] During this process, the first protrusion 12 on the first wheel body 10 abuts against the third protrusion 14 of the first transmission groove 2 and generates an interaction force, causing the cycloidal wheel 7 to rotate relative to the eccentric sleeve 6, thereby achieving the effect of deceleration.

[0035] Combining the two motion modes mentioned above, the actual motion state of the cycloidal wheel 7 is rolling along the inner wall of the first transmission groove 2, which reduces the rotational speed and increases the torque.

[0036] The second wheel 11 and the second transmission groove 4 are driven by the same transmission method, utilizing the force generated between the second protrusion 13 and the fourth protrusion 15 to rotate the massage element 3. During the transmission process, the rotation speed of the massage element 3 is lower than that of the cycloidal wheel 7, which can achieve a further deceleration effect.

[0037] Further, refer to Figure 8 The massage member 3 has two or more massage protrusions 16 protruding from the housing assembly. These massage protrusions 16 are evenly distributed along the surface of the massage member 3. The massage protrusions 16 contact the human body and perform a massage function during rotation.

[0038] Further, refer to Figure 14-15 The massage protrusion 16 is rotatably mounted on the massage element 3. During the massage process, it can reduce friction with the contact surface and improve the comfort of the massage.

[0039] Further, refer to Figure 10 The first housing 1 has multiple heat dissipation holes 17. The heat dissipation holes 17 can improve the airflow between the inside and outside of the first housing 1 and accelerate the heat dissipation inside the first housing 1.

[0040] To reduce resistance during transmission, the inner side of the first housing 1 also has multiple oil reservoirs 18 for storing lubricating oil. The lubricating oil can reduce friction between the various structures, thereby reducing transmission resistance.

[0041] Because the force required to be applied to the body during a massage is significantly greater than the force needed for transmission between structures, the massage component 3 needs to have a large torque to achieve the massage effect. Furthermore, since forces are reciprocal, the first housing 1 itself needs sufficient structural strength to provide the torque.

[0042] Therefore, refer to Figure 11 The outer surface of the first housing 1 has reinforcing ribs 19. Multiple reinforcing ribs 19 are interconnected to enhance the structural strength of the first housing 1. In this embodiment, the reinforcing ribs 19 include multiple cylindrical structures and multiple strip structures.

[0043] Furthermore, it also includes: Second housing 20, wherein the housing assembly is movably installed within the second housing 20; A telescopic device is disposed inside the second housing 20 and located between the outer side wall of the housing assembly and the inner side wall of the second housing 20. The telescopic device is used to drive the housing assembly, the massage member 3 and the transmission assembly to move relative to the second housing 20, so that the massage member 3 protrudes out of the second housing 20 or retracts into the second housing 20.

[0044] Further, refer to Figure 12-13 The telescopic device has an expanded state and a contracted state, including: An air bag 21 is disposed between the inner side wall of the second housing 20 and the outer side wall of the housing assembly, and is used to move the housing assembly, the massage component 3 and the transmission assembly relative to the second housing 20 during the inflation process; The first elastic element 24 is disposed between the inner sidewall of the second housing 20 and the outer sidewall of the housing assembly, and its two ends are respectively connected to the inner sidewall of the second housing 20 and the outer sidewall of the housing assembly, for driving the housing assembly, the massage element 3 and the transmission assembly to retract into the second housing 20.

[0045] In some embodiments, it further includes: a second elastic member 28 disposed at the middle position of the top housing 1, and a third elastic member 29 disposed between the top housing 1 and the second housing 20.

[0046] When the massage element 3, transmission assembly, and drive device 5 protrude from the second housing 20 under the action of the telescopic device, the second elastic element 28 and the third elastic element 29 are compressed; when the telescopic device does not exert force on the massage element 3, transmission assembly, and drive device 5, the second elastic element 28 and the third elastic element 29 will drive the massage element 3, transmission assembly, and drive device 5 to retract into the second housing 20 and complete the reset.

[0047] The surface of the second elastic element 28 has a smooth friction layer, which is used to generate relative sliding with the massage element 3 to reduce friction and prevent the massage element 3 from wearing the faceplate during rotation.

[0048] The air bag 21 can be an enclosed air bag, consisting of at least one air bladder unit; for example, an annular air bag or a C-shaped air bag. The first elastic element 24 is a tension spring.

[0049] The air bag 21 is connected in sequence to the air circuit controller 25, the air storage device 26, and the air pump 27 via an air pipe.

[0050] The working process includes: initially, the housing assembly and the massage element 3 are all located inside the second housing 20; the air pump 27 drives the gas to move, and the gas enters the air bag 21 through the air storage device 26 and the air circuit controller 25; the air bag 21 expands and drives the housing assembly and the massage element 3 to move as a whole, so that the massage element 3 protrudes out of the second housing 20; the drive device 5 drives the eccentric sleeve 6 to rotate, which in turn drives the cycloidal wheel 7 to move, and finally makes the massage element 3 rotate to realize the massage function.

[0051] When massage is not needed, the air circuit controller 25 controls the air bag 21 to deflate, and the second elastic element 28 and the third elastic element 29 drive the massage element 3, the transmission assembly and the drive device 5 to retract into the second housing 20.

[0052] The above description is merely a preferred embodiment of the present invention and an explanation of the technical principles employed. Those skilled in the art should understand that the scope of the invention is not limited to the specific combination of the above-described technical features, but also includes other technical solutions formed by arbitrary combinations of the above-described technical features or their equivalents without departing from the inventive concept. For example, technical solutions formed by substituting the above-described features with (but not limited to) technical features with similar functions disclosed in this invention.

Claims

1. A mechanical massage device for car seats, characterized in that, include: A housing assembly, wherein a first cycloidal structure is provided within the housing assembly; The first cycloidal structure has a first abutting sidewall; Massage component (3), which is rotatably mounted on the housing assembly and partially protrudes from the housing assembly for massaging; the massage component (3) has a second cycloidal structure on its surface near the inner side of the housing assembly, and the second cycloidal structure has a second abutting sidewall; A transmission assembly is installed inside the housing assembly and engages with the first abutting sidewall and the second abutting sidewall respectively; when rotating, the transmission assembly drives the massage element (3) to rotate relative to the housing assembly at an angular velocity less than the rotational angular velocity of the transmission assembly. A drive device (5) is connected to the transmission assembly and is used to drive the transmission assembly to rotate.

2. The mechanical massage device for a car seat according to claim 1, characterized in that, The housing assembly includes: A detachable top housing (1) and a bottom housing (23); The top housing (1) is annular, and the inner edge of the annular top housing (1) abuts against the edge of the massage element (3) and can slide relative to it.

3. A mechanical massage device for a car seat according to claim 2, characterized in that, The first cycloidal structure is a first transmission groove (2) opened inside the bottom housing (23); the inner sidewall of the first transmission groove (2) forms the first abutting sidewall; The second cycloidal structure is a second transmission groove (4) opened on the side of the massage member (3) near the bottom housing (23); the inner sidewall of the second transmission groove (4) forms the second abutment sidewall.

4. The mechanical massage device for a car seat according to claim 1, characterized in that, The transmission assembly includes: An eccentric sleeve (6) has a first through hole (8) at a non-central position on it; the driving end of the driving device (5) is inserted into the first through hole (8) and is fixedly connected to the eccentric sleeve (6); Cycloidal wheel (7), with a second through hole (9) at its center; eccentric sleeve (6) is rotatably installed in the second through hole (9); cycloidal wheel (7) abuts against the side wall of the first transmission groove (2) and the inner side wall of the second transmission groove (4); The driving device (5) is used to drive the eccentric sleeve (6) to rotate and drive the cycloidal wheel (7) to roll along the side wall of the first transmission groove (2); the cycloidal wheel (7) interacts with the second transmission groove (4) to drive the massage component (3) to rotate.

5. A mechanical massage device for a car seat according to claim 4, characterized in that, The cycloidal wheel (7) includes a first wheel body (10) and a second wheel body (11); the first wheel body (10) and the second wheel body (11) are coaxially arranged and fixedly connected to each other; The first wheel body (10) has a plurality of first protrusions (12); the second wheel body (11) has a plurality of second protrusions (13); the first protrusions (12) and the second protrusions (13) are offset from each other.

6. A mechanical massage device for a car seat according to claim 5, characterized in that, The sidewall of the first transmission groove (2) has a plurality of third protrusions (14); the sidewall of the second transmission groove (4) has a plurality of fourth protrusions (15). The number of the first protrusions (12) is less than the number of the third protrusions (14); The number of the second protrusion (13) is less than the number of the fourth protrusion (15).

7. A mechanical massage device for a car seat according to claim 1, characterized in that, The portion of the massage element (3) protruding from the housing assembly has two or more massage protrusions (16).

8. A mechanical massage device for a car seat according to claim 7, characterized in that, The massage protrusion (16) is rotatably mounted on the massage element (3).

9. A mechanical massage device for a car seat according to any one of claims 1-8, characterized in that, Also includes: A second housing (20), wherein the housing assembly is movably mounted within the second housing (20); The telescopic device is disposed inside the second housing (20) and located between the outer side wall of the housing assembly and the inner side wall of the second housing (20), for driving the housing assembly, the massage member (3) and the transmission assembly to move relative to the second housing (20), so that the massage member (3) protrudes out of the second housing (20) or retracts into the second housing (20).

10. A mechanical massage device for a car seat according to claim 9, characterized in that, The telescopic device includes: An air bag (21) is disposed between the inner side wall of the second housing (20) and the outer side wall of the housing assembly, and is used to drive the housing assembly, the massage component (3) and the transmission assembly to move relative to the second housing (20) during the inflation process; The first elastic element (24) is disposed between the inner sidewall of the second housing (20) and the outer sidewall of the housing assembly, and its two ends are respectively connected to the inner sidewall of the second housing (20) and the outer sidewall of the housing assembly, for driving the housing assembly, the massage element (3) and the transmission assembly to retract into the second housing (20).

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