Lower limb massager

Abstract

The invention provides a lower limb massage machine capable of moving a therapeutic member through simple control. The massage machine for the lower limbs is provided with the following components: treatment components (37, 38) which are used for massaging the lower limbs; and a movement mechanism (23) which is connected to the treatment members (37, 38) and moves the treatment members (37, 38) in the longitudinal direction of the lower limb, the movement mechanism (23) comprising: a rotating shaft (35); a drive unit (36) that rotates the rotating shaft (35); a support frame (22) that supports the rotating shaft (35) so as to be movable in the longitudinal direction of the lower limb; and a link mechanism (66) that connects the rotating shaft (35) and the support frame (22) and that expands and contracts by the rotation of the rotating shaft (35).

Description

(19) State Intellectual Property Office (12) Invention Patent Application (10) Application Publication Number (43) Application Publication Date (21) Application Number 202511907140.1 (22) Application Date 2025.12.17 (30) Priority Data 2024-230049 2024.12.26 JP (71) Applicant Daito Denki Industries, Ltd. Address Osaka Prefecture, Japan (72) Inventor Tetsuya Ishikawa, Shinsaku Shimizu (74) Patent Agency Longtian Intellectual Property Agency Co., Ltd. 72003 Patent Attorney Ma Changyu (51) Int.Cl. A61H 15 / 00 (2006.01) (54) Invention Title Lower Limb Massager (57) Abstract This invention provides a lower limb massager that can move the treatment component through simple control. The lower limb massager includes: a treatment component (37, 38) for massaging the lower limb; and a moving mechanism (23) connected to the treatment component (37, 38) to move the treatment component (37, 38) along the length of the lower limb. The moving mechanism (23) includes: a rotating shaft (35); a drive unit (36) for rotating the rotating shaft (35); a support frame (22) for supporting the rotating shaft (35) so that it can move along the length of the lower limb; and a linkage mechanism (66) for connecting the rotating shaft (35) to the support frame (22) and extending and retracting by rotating the rotating shaft (35). Claims 2 pages, Description 10 pages, Drawings 12 pages, CN 122272346 A 2026.06.26 CN 1 22 27 23 46 A 1. A lower limb massager, comprising: a treatment member for massaging the lower limb; and a moving mechanism connected to the treatment member for moving the treatment member along the length direction of the lower limb, the moving mechanism comprising: a rotating shaft; a drive unit for rotating the rotating shaft; a support frame for supporting the rotating shaft to be movable along the length direction of the lower limb; and a linkage mechanism connecting the rotating shaft to the support frame and extending or retracting by the rotation of the rotating shaft. 2. The lower limb massager according to claim 1, wherein the linkage mechanism comprises: a first linkage member fixed to the rotating shaft and rotating together with the rotating shaft; and a second linkage member, one end of which is freely oscillatingly connected to the first linkage member, and the other end of which is freely oscillatingly connected to the support frame. 3. The lower limb massager according to claim 1 or 2, wherein the treatment component is mounted on the rotating shaft. 4. The lower limb massager according to claim 3, wherein a position adjustment mechanism is provided between the treatment component and the rotating shaft, the position adjustment mechanism adjusting the position of the treatment component in the axial direction of the rotating shaft by rotating the rotating shaft in both directions.5. The lower limb massager according to claim 1 or 2, wherein the moving mechanism has a movable frame supported by the support frame for free movement along the length direction of the lower limb, and the rotating shaft is supported by the movable frame. 6. The lower limb massager according to claim 5, wherein the driving unit is mounted on the movable frame. 7. The lower limb massager according to claim 6, wherein the rotating shaft, the movable frame, and the driving unit are arranged at overlapping positions along the length direction of the lower limb. 8. The lower limb massager according to claim 1 or 2, wherein a plurality of treatment components are respectively provided corresponding to the left and right lower limbs, and the driving unit is arranged between the left and right treatment components. 9. The lower limb massager according to claim 3, wherein a plurality of treatment components are respectively provided corresponding to the left and right lower limbs, and the rotating shaft extends in the left-right direction across the left and right treatment components. 10. The lower limb massager according to claim 1 or 2, wherein the linkage mechanism is arranged at the left-right end of the moving mechanism. 11. The lower limb massager according to claim 2, wherein the first connecting rod member and the second connecting rod member are formed in a plate shape and arranged with the plate surface facing left and right. 12. The lower limb massager according to claim 1 or 2, further comprising a force-applying member that applies force to the treatment member in a direction approaching the lower limb. 13. The lower limb massager according to claim 1 or 2, wherein the treatment member comprises a first treatment member disposed on the side of the lower limb in the left-right direction and a second treatment member disposed on the rear of the lower limb. 14. The lower limb massager according to claim 1 or 2, further comprising: an airbag disposed across the lower limb and opposite the treatment member, inflated by air supply; and a second drive unit that drives the airbag. 15. The lower limb massager according to claim 14, wherein it has a control unit for controlling the drive unit and the second drive unit, the drive unit having an electric motor for generating rotational power of the rotating shaft and a current sensor for detecting the current value of the electric motor, and the control unit causing air to be discharged from the airbag when the current value of the electric motor exceeds a predetermined threshold. Claims 2 / 2 pages 3 CN 122272346 A Lower Limb Massager Technical Field

[0001] The present invention relates to a lower limb massager. Background Art

[0002] A lower limb massager is disclosed in the following Patent Document 1, which is capable of massaging the lower limbs of the human body, specifically from below the knee to near the ankle. This lower limb massager has the function of performing massage while the calf of the lower limb is clamped.A massage mechanism for acupressure massage. The massage mechanism has a treatment component for pressing the calf and a moving mechanism for moving the treatment component up and down along the calf, thereby enabling acupressure massage of the calf over a wide range in the vertical direction.

[0003] Prior Art Documents

[0004] Patent Documents

[0005] Patent Document 1: Japanese Patent Application Publication No. 2014-18616

[0006] The lower limb massager described in Patent Document 1 has a moving mechanism, which has a vertical motion slider on which the treatment component is mounted, a feed screw shaft screwed to the vertical motion slider and arranged in the vertical direction, and a motor for rotating the feed screw shaft in both directions. Moreover, the moving mechanism rotates the feed screw shaft in the forward direction by driving the motor, thereby raising the treatment component, and rotates the feed screw shaft in the reverse direction, thereby lowering the treatment component, and by repeatedly performing this forward and reverse rotation, the treatment component moves up and down. Therefore, the lower limb massager described in Patent Document 1 requires monitoring the vertical position of the treatment component using sensors and the like, and frequently rotating the motor in both directions, which may complicate the construction and control. Summary of the Invention

[0007] The object of the present invention is to provide a lower limb massager that can move the treatment component through simple control.

[0008] (1) The lower limb massager of the present invention includes: a treatment component for massaging the lower limb; and a moving mechanism connected to the treatment component to move the treatment component along the length direction of the lower limb, the moving mechanism including: a rotating shaft; a drive unit for rotating the rotating shaft; a support frame for supporting the rotating shaft so that it can move along the length direction of the lower limb; and a linkage mechanism for connecting the rotating shaft to the support frame and extending or retracting by rotating the rotating shaft.

[0009] (2) In (1) above, preferably, the linkage mechanism includes: a first linkage member fixed to the rotating shaft and rotating together with the rotating shaft; and a second linkage member, one end of which is freely oscillatingly connected to the first linkage member, and the other end of which is freely oscillatingly connected to the support frame.

[0010] (3) In (1) or (2) above, preferably, the treatment member is mounted on the rotating shaft.

[0011] (4) In (3) above, preferably, the lower limb massager has a position adjustment mechanism between the treatment member and the rotating shaft, the position adjustment mechanism adjusting the position of the treatment member in the axial direction of the rotating shaft by rotating the rotating shaft in both directions.

[0012] (5) In any of (1) to (4) above, preferably, the moving mechanism has a movable frame supported by the support frame to move freely along the length direction of the lower limb, and the rotating shaft is supported by the movable frame. Instruction manual 1 / 10 page 4 CN 122272346 A

[0013] (6) In (5) above, preferably, the drive unit is installed on the movable frame.

[0014] (7) In (6) above, preferably, the rotating shaft, the movable frame and the drive unit are arranged at a position overlapping in the length direction of the lower limb.

[0015] (8) In any of (1) to (7) above, preferably, a plurality of treatment components are provided corresponding to the left and right lower limbs respectively, and the drive unit is arranged between the left and right treatment components.

[0016] (9) In any of (1) to (8) above, preferably, a plurality of treatment components are provided corresponding to the left and right lower limbs respectively, and the rotating shaft extends in the left and right direction across the left and right treatment components.

[0017] (10) In any of (1) to (9) above, preferably, the linkage mechanism is arranged at the left and right ends of the moving mechanism.

[0018] (11) In (2) above, preferably, the first linkage component and the second linkage component are formed as plates and arranged with the plate surface facing the left and right direction.

[0019] (12) In any of (1) to (11) above, preferably, the lower limb massager further includes a force-applying member that applies force to the treatment member in a direction close to the lower limb.

[0020] (13) In any of (1) to (12) above, preferably, the treatment member includes a first treatment member disposed on the side of the lower limb in the left-right direction and a second treatment member disposed on the rear of the lower limb.

[0021] (14) In any of (1) to (13) above, preferably, the lower limb massager further includes: an airbag disposed across the lower limb and opposite to the treatment member, which inflates by supplying air; and a second drive unit that drives the airbag.

[0022] (15) In (14) above, preferably, the lower limb massager has a control unit that controls the drive unit and the second drive unit. The drive unit has an electric motor that generates rotational power for the rotating shaft and a current sensor that detects the current value of the electric motor. When the current value of the electric motor exceeds a predetermined threshold, the control unit causes air to be discharged from the airbag.

[0023] Effects of the Invention

[0024] According to the lower limb massager of the present invention, the treatment component can be moved by simple control. Brief Description of the Drawings

[0025] FIG1 is a perspective view of the lower limb massager according to the embodiment.

[0026] FIG2 is a perspective view of the upper massage device of the lower limb massager.

[0027] FIG3 is a perspective view showing the state after the front surface cover of the upper massage device is removed.

[0028] FIG4 is a top view showing the interior of the upper massage device.

[0029] FIG5 is a perspective view of the outer treatment component, the rear treatment component, and a part of the moving mechanism.

[0030] Figure 6 is a perspective view showing the lateral treatment component.

[0031] Figure 7 is a top view showing the lateral treatment component and the rear treatment component.

[0032] Figure 8 is a sectional view along line A-A of Figure 7.

[0033] Figure 9A is a side view showing the outer treatment member moved to its upper limit position.

[0034] Figure 9B is a side view showing the outer treatment member moved to its middle position in the vertical direction.

[0035] Figure 9C is a side view showing the outer treatment member moved to its lower limit position.

[0036] Figure 10 is a block diagram showing the control structure of the upper massage device.

[0037] Explanation of reference numerals: Specification 2 / 10 Page 5 CN 122272346 A 10: Lower limb massager 11: Upper massage device 22: Support frame 23: Moving mechanism 34: Movable frame 35: Rotating shaft 36: First drive unit 37: Outer treatment component 38: Rear treatment component 39: Inner treatment component (airbag) 41: Second drive unit 45: Electric motor 55: Force application component 61: Position adjustment mechanism 66: Linkage mechanism 67: First linkage component 68: Second linkage component 75: Control unit 76: Current sensor L: Calf (lower limb) Detailed Description of Embodiments

[0038] Hereinafter, embodiments of the present invention will be described based on the accompanying drawings.

[0039] FIG1 is a perspective view showing the lower limb massager according to the embodiment.

[0040] As shown in FIG1, the lower limb massager 10 is a device for massaging the left and right lower limbs of a user. The lower limb massager 10 has an upper massage device 11 for massaging the calf L that constitutes the lower limb and a lower massage device 12 for massaging the foot F of the lower limb. The lower limb massager 10 of this embodiment performs massage in a position where the calf L is facing up and down.

[0041] In addition, in this specification, "calf L" refers to the part of a person's lower limb below the knee and above the ankle. "Foot F" refers to the part below the ankle. In this embodiment, the direction indicated by the arrow line X in FIG1 is called the left-right direction (width direction), the direction indicated by the arrow line Y is called the front-back direction, and the direction indicated by the arrow line Z is called the up-down direction. These directions are consistent with the direction observed from the user who inserts the lower limb into the lower limb massager 10. The lower limb massager 10 of this embodiment performs massage in a position where the calf L is facing approximately up and down.

[0042] As shown in FIG1, the lower limb massager 10 has a housing 13. When viewed from the front and rear, the housing 13 is formed as approximately rectangular or approximately square. Viewed from the left and right sides, the housing 13 is roughly L-shaped, with the lower side longer in the front-rear direction and the upper side longer in the vertical direction. A pair of upper recesses 14, opening forward and upward, are formed on the upper side of the front surface of the housing 13. A pair of lower recesses 15, opening upward, are formed on the lower side of the front surface of the housing 13. The upper and lower recesses 14 on the left are continuous, and the upper and lower recesses 15 on the right are continuous.15 are continuous with each other. Lining material 16 is provided on the inner side of the upper recess 14 and the lower recess 15 on the left and right sides respectively. On the left and right sides of the instruction manual 3 / 10 page 6 CN 122272346 A, the upper recess 14 can be inserted into the left and right calves L of the user respectively, and the lower recess 15 on the left and right sides can be inserted into the left and right feet F respectively.

[0043] Inside the housing 13, an upper massage device 11 is arranged near the upper recess 14, and a lower massage device 12 is arranged near the lower recess 15. The lower massage device 12 adopts a known structure that can massage the left and right sides or back of the feet F. The lower massage device can also be omitted.

[0044] (Structure of the upper massage device)

[0045] FIG2 is a perspective view showing the upper massage device of the lower limb massager.

[0046] As shown in FIG2, the upper massage device 11 has a housing 21 and a plurality of treatment components 37, 38, and 39.

[0047] The housing 21 has a base 26 and a plurality of wall portions 27 and 28. The base 26 is disposed on the rear side of the housing 21 and is generally rectangular when viewed from the rear. The wall portions 27 and 28 protrude forward from the base 26. The wall portions 27 and 28 have left and right wall portions 27 disposed on the left and right sides of the front of the housing 21 and a central wall portion 28 disposed at the left and right center of the front of the housing 21. The base 26 protrudes further downward than the left and right wall portions 27 and the central wall portion 28.

[0048] Recesses 29 opening forward and upward / downward are formed between the left wall portion 27 and the central wall portion 28, respectively, between the right wall portion 27 and the central wall portion 28 of the housing 21. These recesses 29 are correspondingly arranged with the upper recesses 14 on the left and right sides of the housing 13 of the lower limb massager 10, and are configured such that the calf L inserted into the upper recess 14 is also inserted into the recesses 29 of the housing 21. A plurality of treatment members 37, 38, and 39 are arranged inside the recesses 29.

[0049] The housing 21 has a rear cover 21a that forms the back of the base 26 and a front cover 21b that forms the front surface of the base 26 and a plurality of wall portions 27 and 28, which are connected by screws or other connectors.

[0050] FIG3 is a perspective view showing the state after the front surface cover of the upper massage device is removed. FIG4 is a top view showing the inner side of the upper massage device. FIG5 is a perspective view of the outer treatment member, the rear treatment member, and a part of the moving mechanism.

[0051] (Structure of the moving mechanism)

[0052] As shown in Figures 3 and 4, a moving mechanism 23 is provided inside the outer casing 21. This moving mechanism 23 causes a portion of the treatment components 37 and 38 to move up and down along the length direction of the calf L. The moving mechanism 23 has a support frame 22, a movable frame 34, a rotating shaft 35, a first drive unit 36, and a linkage mechanism 66.

[0053] The support frame 22 is fixed inside the outer casing 21. The support frame 22 is fixed to the rear cover 21a of the outer casing 21.The frame 22 is mounted at both ends of the rear cover 21a in the left and right directions. The support frame 22 includes: a support plate 31, which is made of a plate that is bent into a generally L-shape when viewed from above; and a guide rail 32, which is mounted on the support plate 31. The guide rail 32 is made of a rod, which is a round or square rod extending in the vertical direction.

[0054] As shown in Figures 4 and 5, the movable frame 34 is an elongated member formed in the left and right direction. The movable frame 34 has a generally integral length in the left and right direction across the housing 21. The two ends of the movable frame 34 in the left and right directions are supported by the guide rail 32 of the support frame 22 so that it can move freely. Specifically, through holes 34a extending in the vertical direction are formed at both ends of the movable frame 34, and the guide rail 32 slides freely through the through holes 34a. Therefore, the movable frame 34 is configured to be able to move in the vertical direction along the guide rail 32, in other words, it is configured to be able to move along the length direction of the leg L inserted into the recess 29.

[0055] The rotating shaft 35 is disposed on the front side of the movable frame 34. The rotating shaft 35 is disposed at a position (height) overlapping with the movable frame 34 in the vertical direction. The rotating shaft 35 is disposed with its axis horizontal. Specifically, the rotating shaft 35 is disposed with its axis pointing in the left-right direction. The two ends of the rotating shaft 35 in the left-right direction are supported by the movable frame 34. Bearings 42 are provided protruding forward at the two ends of the movable frame 34, and the two ends of the rotating shaft 35 in the left-right direction are supported by the bearings 42 so that they can rotate freely. Therefore, the rotating shaft 35 and the movable frame 34 are supported together by the guide rail 32 so that they can move in the vertical direction.

[0056] The first drive unit 36 ​​rotates the rotating shaft 35. As shown in FIG4, the first drive unit 36 ​​is housed in a receiving member 43 provided in the movable frame 34. The receiving member 43 protrudes forward from the center of the movable frame 34 in the left-right direction. The housing member 43 is disposed inside the central wall portion 28 of the housing 21.

[0057] As shown in FIG5, the first drive unit 36 ​​includes an electric motor 45 and a transmission unit 46 that transmits the output of the electric motor 45 to the rotation shaft 35. The electric motor 45 outputs rotational power from the output shaft 45a. The electric motor 45 rotates the output shaft 45a in both forward and reverse directions. The electric motor 45 is configured such that the output shaft 45a is oriented to the left and right. The electric motor 45 is disposed in front of the rotation shaft 35. The electric motor 45 is disposed at a position (height) that overlaps with the movable frame 34 and the rotation shaft 35 in the vertical direction. Therefore, the movable frame 34, the rotation shaft 35 and the electric motor 45 are compactly constructed in the vertical direction, and the range of movement in the vertical direction can be expanded.

[0058] As shown in FIG5, the transmission unit 46 has a plurality of speed-changing gears 46a. The transmission unit 46 reduces the output of the electric motor 45.The speed is transmitted to the rotating shaft 35. As shown in FIG4, the electric motor 45 and the transmission part 46 are housed and supported by the housing member 43, and are therefore arranged inside the central wall 28 in the housing 21 in the same manner as the housing member 43.

[0059] The linkage mechanism 66 constitutes a lifting mechanism that causes the movable frame 34, the rotating shaft 35, and the first drive part 36 to move up and down. The linkage mechanism 66 connects the rotating shaft 35 to the support frame 22 and extends and retracts between the two. Details about the linkage mechanism 66 will be described later.

[0060] (Structure of the treatment member)

[0061] As shown in FIG2, a plurality of treatment members 37, 38, 39 massage the two calves L inserted into the two recesses 29 of the housing 21. The plurality of treatment components 37, 38, and 39 include: an outer treatment component 37 disposed on the outer side of each calf L in the left-right direction; a rear treatment component 38 disposed on the rear side of each calf L; and an inner treatment component 39 disposed on the inner side of each calf L in the left-right direction.

[0062] (Structure of the outer treatment component)

[0063] As shown in Figures 3 and 4, the outer treatment component 37 is mounted at both ends of the rotation shaft 35 in the left-right direction. The outer treatment component 37 is disposed further inward in the left-right direction than the support frame 22. The outer treatment component 37 has an arm 51 mounted on the rotation shaft 35 and a treatment element 52 mounted on the arm 51. The arm 51 is mounted on the rotation shaft 35 in the left-right direction via a mounting shaft 53 in the up-down direction. Two treatment elements 52 are arranged vertically at the front end of the arm 51 at a position forward of the mounting shaft 53.

[0064] FIG6 is a perspective view showing the outer treatment component.

[0065] As shown in FIG5 and FIG6, the upper and lower treatment components 52 each have a shaft portion 52a and a plurality of roller portions 52b rotatably mounted on the shaft portion 52a. The shaft portion 52a is arranged generally horizontally and extends forward from the front end of the arm 51. More specifically, as shown in FIG4, the shaft portion 52a is slightly inclined and extends forward relative to the front-back direction, with the front side being more inward in the left-right direction (the L side of the calf). The shaft portions 52a of the upper and lower treatment components 52 are arranged generally parallel to each other.

[0066] A plurality of roller portions 52b are arranged axially relative to each shaft portion 52a (3 in the example shown). The roller portions 52b are formed into a disc-shaped or flat spherical shape with an arc-shaped outer circumference. The roller portion 52b provides acupressure massage to the calf L by contacting it (via the inner lining material 16 (see Figure 1)). The shaft portion 52a is located further forward and more inward in the left-right direction; therefore, the treatment member 52 provides acupressure massage from slightly forward of the calf L (in other words, the shin of the leg) towards the rearward direction. However, the treatment member 52 can also be configured to provide acupressure massage to the left and right sides of the calf L from the frontal side.

[0067] Figure 7 is a top view showing the outer and rear treatment members.

[0068] As shown in Figures 4 and 7, the rear end 51a of the arm 51 is subjected to a force applied outward in the left-right direction by the force-applying member 55. Specifically, as described on page 5 / 10 of the specification (CN 122272346 A), a through opening 34b is formed in the movable frame 34, and the rear end 51a of the arm 51 is inserted into this opening 34b. The force-applying member 55, which is composed of a compression coil spring and extends and retracts in the left-right direction, is housed within the opening 34b, and the rear end 51a of the arm 51 is subjected to a force applied outward in the left-right direction by this force-applying member 55. The middle portion of the arm 51 in the front-rear direction is freely oscillating and mounted on the rotation shaft 35 via the mounting shaft 53 in the up-down direction; therefore, the front end of the arm 51 is subjected to a force applied inward in the left-right direction by the force-applying member 55. Therefore, as shown in Figure 7, the treatment element 52 mounted on the front end of the arm 51 is also subjected to a force inward in the left-right direction, i.e., towards the calf L. Thus, the treatment piece 52 is pressed onto the calf L, enabling appropriate acupressure massage.

[0069] FIG8 is a sectional view along line A-A of FIG7.

[0070] As shown in FIG6 and FIG8, a position adjustment mechanism 61 (width adjustment mechanism 61) is provided between the rotation shaft 35 and the outer treatment piece 37 to adjust the position of the outer treatment piece 37 in the left-right direction along the axis of the rotation shaft 35. The position adjustment mechanism 61 has an external threaded member 62 mounted on the outer peripheral surface of the rotation shaft 35 and a nut member 63 screwed into the external threaded member 62. The external threaded member 62 rotates integrally with the rotation shaft 35. When the external threaded member 62 rotates forward together with the rotation shaft 35, the nut member 63 screwed into the external threaded member 62 moves to one side (e.g., the inner side) in the left-right direction. When the external threaded member 62 rotates in the opposite direction together with the rotation shaft 35, the nut member 63 moves to the other side (e.g., the outer side) in the left-right direction. On the left and right sides of the external threaded member 62, a pair of left and right stops 64 are provided on the rotation shaft 35 to restrict the left and right movement of the nut member 63. The nut member 63 can move in the left and right direction within the range between the left and right stops 64.

[0071] A mounting member 65 is mounted on the outer peripheral surface of the nut member 63. The mounting member 65 is mounted on the nut member 63 in a manner that allows it to slide around the axis of the nut member 63. A mounting shaft 53 protrudes from the upper and lower ends of the mounting member 65, and the arm 51 of the outer treatment member 37 is mounted on the mounting shaft 53 in a freely swinging manner. Therefore, if the rotation shaft 35 and the external threaded member 62 are rotated in opposite directions as described above, and the nut member 63 moves in the left and right direction, the outer treatment member 37 can also move in the left and right direction. Thus, the left and right position of the outer treatment member 37 (i.e., the left and right distance between the outer treatment member 37 and the inner treatment member 39) can be adjusted according to the thickness of the calf L.

[0072] If the nut component 63 is restricted from moving in the left and right directions by the left and right stops 64, it is integral with the external thread component 62.Rotation. The mounting member 65 can slide on the outer peripheral surface of the nut member 63, so the rotation of the nut member 63 is not hindered by the mounting member 65, nor is the rotation of the rotation shaft 35 and the external thread member 62. Therefore, after adjusting the left-right position of the outer treatment member 37 by rotating the rotation shaft 35 in the forward or reverse direction, as described later, the outer treatment member 37 and the rear treatment member 38 can be moved up and down by rotating the rotation shaft 35.

[0073] (Structure of the rear treatment member)

[0074] As shown in Figures 4 and 7, the rear treatment member 38 has a roller-shaped treatment element 57 supported by the rotation shaft 35 and capable of free rotation. The treatment element 57 is formed as a disc-shaped or flat spherical shape with an arc-shaped outer peripheral surface. The treatment element 57 of the rear treatment member 38 performs acupressure massage by contacting the back of the calf L (wherein, contact is made via the inner lining material 16). The movable frame 34 is partially bent to the rear to avoid interference with the rear treatment member 38.

[0075] (Structure of the inner treatment member)

[0076] As shown in Figures 2 and 4, the inner treatment member 39 is installed on the left and right sides of the central wall portion 28 in the outer casing 21 of the upper massage device 11. The inner treatment member 39 and the outer treatment member 37 are arranged opposite each other in the left and right direction. Therefore, the inner treatment member 39 and the outer treatment member 37 together clamp the calf L inserted into the recess 29 from both sides in the left and right direction. The inner treatment member 39 in this embodiment is composed of an air bladder. The air bladder is inflated by supplying air. Therefore, the inner treatment member 39 can perform acupressure massage on the inner side of the calf L inserted into the recess 29 of the outer casing 21 in the left and right direction.

[0077] As shown in Figures 9A to 9B, the inner treatment member 39 has a length L1 in the vertical direction that overlaps with or includes the range of movement of the vertically moving outer treatment member 37 (details will be described later). Therefore, acupressure massage can be performed while the calf L is held between the outer treatment component 37 and the inner treatment component 39.

[0078] A second drive unit 41 for driving the inner treatment component 39 is disposed inside the central wall portion 28 of the outer casing 21. The second drive unit 41 is disposed further forward than the first drive unit 36 ​​for rotating the rotating shaft 35. The second drive unit 41 includes a pump 73 for compressed air and a control valve 74 for controlling the supply of compressed air to the inner treatment component 39. The control valve 74 is composed of a solenoid valve, a flow adjustment valve, etc. The control valve 74 is disposed in front of the first drive unit 36, and the pump 73 is disposed below the control valve 74. The inner treatment component (airbag) 39, the control valve 74, and the pump 73 are connected by air hoses (not shown).

[0079] (Structure of the linkage mechanism)

[0080] Hereinafter, the linkage mechanism 66 of the moving mechanism 23 will be described.

[0081] Figures 9A to 9C are side views of the moving mechanism. Specifically, Figure 9A shows the state where the treatment component is moved to the upper limit position, Figure 9B shows the state where the treatment component is moved to the middle position in the vertical direction, and Figure 9C shows the state where it is moved to the lower limit position.

[0082] As shown in Figures 3, 4, and Figures 9A to 9C, the linkage mechanism 66 is disposed between the rotating shaft 35 and the support frame 22, connecting the two. The linkage mechanism 66 extends and retracts between the rotating shaft 35 and the support frame 22. The linkage mechanism 66 is disposed at two locations between the two ends of the rotating shaft 35 and the left and right support frames 22. The linkage mechanism 66 of this embodiment essentially constitutes a crank mechanism.

[0083] The linkage mechanism 66 has a first linkage member 67 and a second linkage member 68. The first linkage member 67 is fixed to the end of the rotating shaft 35. Therefore, the first linkage member 67 rotates together with the rotating shaft 35. One end of the second linkage member 68 is connected to the first linkage member 67, and the other end is connected to the support frame 22.

[0084] The first and second connecting rod members 67 and 68 are both formed of sheet metal. The first and second connecting rod members 67 and 68 are arranged with the sheet metal facing left and right. Viewed from the left and right sides, the first connecting rod member 67 is formed into a circular shape. The side shape of the first connecting rod member 67 is not a perfect circle, but a circle formed by a combination of arcs with different radii of curvature.

[0085] The first connecting rod member 67 is fixed to the rotation axis 35 at a position offset from its center. By forming the first connecting rod member 67 into a circular shape, the gap generated between the first connecting rod member 67 and the support frame 22 can be reduced, and foreign matter can be prevented from entering the gap. The first connecting rod member 67 can be formed into a perfect circle, or it can be formed into a strip plate shape like the second connecting rod member 68 described below.

[0086] The second connecting rod member 68 is formed into a long strip plate shape. One end of the second connecting rod member 68 is freely oscillatingly connected to the first connecting rod member 67 via the second connecting shaft 69. The other end of the second connecting rod member 68 is freely oscillatingly connected to the lower part of the support plate 31 of the support frame 22 via the second connecting shaft 70.

[0087] As shown in FIG7, the support plate 31 is formed in a generally L-shape when viewed from above, having: a first piece 31a, which is disposed on the rear side with the plate surface facing the front-rear direction; and a second piece 31b, which is bent forward from the outer end of the first piece 31a in the left-right direction with the plate surface facing the left-right direction. The second connecting rod member 68 is connected to the front end of the lower part of the second piece 31b via the second connecting shaft 70. As shown in FIG9A to FIG9C, the second connecting shaft 70 is disposed below the rotation shaft 35. The second connecting shaft 70 is disposed at a position overlapping the rotation shaft 35 in the front-rear direction. The second connecting shaft 70 is fixed at a constant position.

[0088] As shown in FIG7 and FIG8, the second piece 31b of the support plate 31 and the first connecting rod member 67 are disposed in the left-right direction.Overlapping position. The second link member 68 is disposed on the outer side of the second piece 31b and the first link member 67 in the left and right directions. In this way, the second piece 31b and the first link member 67, which are disposed on the outer side of the support plate 31 in the left and right directions, are disposed in an overlapping position in the left and right directions, thereby making the moving mechanism 23 compact in the left and right directions. In addition, the first link member 67 and the second link member 68 of the link mechanism 66 are made of plates with the plate surface facing the left and right directions, thereby reducing the left and right dimensions of the link mechanism 66 and making the moving mechanism 23 compact in the left and right directions. Specification 7 / 10 pages 10 CN 122272346 A

[0089] (Operation of the moving mechanism)

[0090] Hereinafter, the lifting operation of the moving mechanism 23 will be described with reference to Figures 9A to 9C.

[0091] When the rotating shaft 35 is rotated, as shown in Figures 9A to 9C, the interval between the rotating shaft 35 and the second connecting shaft 70 changes. The rotating shaft 35 is supported by a movable frame 34, whose vertical movement is guided by a guide rail 32 of the supporting frame 22. Therefore, the rotating shaft 35 also moves vertically along the guide rail 32.

[0092] Figure 9A shows the state where the rotating shaft 35 is moved to the upper limit position. At this time, the rotating shaft 35 is farthest from the second connecting shaft 70. Figure 9B shows the state where the rotating shaft 35 is moved to the middle position in the vertical direction. The rotating shaft 35 is at approximately the same height as the first connecting shaft 69. Figure 9C shows the state where the rotating shaft 35 is moved to the lower limit position. At this time, the rotating shaft 35 is closest to the second connecting shaft 70. Therefore, when the rotating shaft 35 is rotated, the linkage mechanism 66 extends and retracts vertically by changing the distance L2 between the rotating shaft 35 and the second connecting shaft 70, and the rotating shaft 35 moves vertically.

[0093] The outer treatment member 37 and the rear treatment member 38 are both mounted on the rotating shaft 35, and therefore move vertically together with the rotating shaft 35. Therefore, the outer treatment member 37 and the rear treatment member 38 move up and down along the calf L, enabling acupressure massage over a wide range of length directions of the calf L.

[0094] The rotating shaft 35 is supported by the movable frame 34 to rotate freely, so the movable frame 34 also moves up and down along with the up and down movement of the rotating shaft 35. Since a first drive unit 36 ​​for driving the rotating shaft 35 is also supported on the movable frame 34, the first drive unit 36 ​​also moves up and down together with the rotating shaft 35.

[0095] FIG10 is a block diagram showing the control structure of the upper massage device.

[0096] The upper massage device 11 has a control unit 75, which controls the operation of the electric motor 45, which serves as the first drive unit 36, and the pump 73 and control valve 74, which serve as the second drive unit 41. In addition, the upper massage device 11 has a current sensor 76 that detects the current value of the electric motor 45. The detected value of the current sensor 76 is input to the control unit 75.

[0097] The control unit 75 includes a processor such as a CPU and a memory such as RAM and ROM. The memory stores programs for controlling the electric motor 45, pump 73, and control valve 74, as well as control data. The control unit 75 controls the operation of the electric motor 45, pump 73, and control valve 74, for example, by executing a pre-set program through the processor. Furthermore, the control unit 75 controls the electric motor 45 based on the detection value (current value) of the current sensor 76. For example, the control unit 75 monitors the current value of the electric motor 45 and controls the operation of the electric motor 45 to bring the current value within a specified range. The control unit 75 can be used only for controlling the upper massage device 11, or it can be used for controlling the entire lower limb massager 10.

[0098] In this embodiment, the control unit 75 monitors the detection value of the current sensor 76. If the detection value exceeds a specified threshold, it determines that an overload has been applied to the electric motor 45 and executes control to reduce the load. Specifically, when the electric motor 45 is driven to move the outer treatment member 37 and the rear treatment member 38 up and down, if the force applied to the calf L is too great, for example, when the outer treatment member 37 and the rear treatment member 38 are pressing the thicker part of the calf L, the electric motor 45 is overloaded. In such cases, in this embodiment, the control unit 75 controls the second drive unit 41 to discharge air from the air bag, which is the inner treatment member 39. As a result, overload on the electric motor 45 can be suppressed, and overheating and damage to the electric motor 45 can be suppressed. In addition, excessive high pressure can be prevented from being applied to the user's lower limbs.

[0099] (Effects of the embodiment)

[0100] (1) The lower limb massager 10 of this embodiment includes: treatment members (outer treatment member 37, rear treatment member 38) for massaging the lower limb (calf L); and a moving mechanism 23 connected to the treatment members 37 and 38 to move the treatment members 37 and 38 along the length of the lower limb. The moving mechanism 23 includes: a rotating shaft 35; a drive unit (first drive unit) 36 for rotating the rotating shaft 35; a support frame 22 for supporting the rotating shaft 35 so that it can move along the length direction of the lower limb L; and a linkage mechanism 66 for connecting the rotating shaft 35 to the support frame 22 and extending and retracting by rotating the rotating shaft 35. According to this structure, by rotating the rotating shaft 35 in one direction, the rotating shaft 35 and the treatment components 37 and 38 can be reciprocated along the length direction of the lower limb L. Therefore, it is possible to prevent the control of the drive unit 36 ​​from becoming complicated.

[0101] (2) In this embodiment, the linkage mechanism 66 includes: a first linkage member 67 fixed to the rotating shaft 35 and rotating together with the rotating shaft 35; and a second linkage member 68, one end of which is freely oscillatingly connected to the first linkage member 67, and the other end of which is connected to the first linkage member 67.The end is freely swinging and connected to the support frame 22. According to this structure, by rotating the rotation shaft 35 in one direction, the first connecting member 67 can be rotated together, and the rotation shaft 35 can be moved up and down relative to the connection between the second connecting member 68 and the support frame 22 (second connecting shaft 70). Therefore, the rotation shaft 35 and the treatment members 37 and 38 can be moved back and forth with a simple structure and control.

[0102] (3) In this embodiment, the treatment members 37 and 38 are mounted on the rotation shaft 35. Therefore, the treatment members 37 and 38 can be moved directly together with the rotation shaft 35 by rotating the rotation shaft 35.

[0103] (4) In this embodiment, the lower limb massager 10 has a position adjustment mechanism 61 between the treatment members 37 and 38 and the rotation shaft 35. The position adjustment mechanism 61 adjusts the position of the treatment member (outer treatment member) 37 in the axial direction of the rotation shaft 35 by rotating the rotation shaft 35 in both directions. According to this structure, by rotating the rotating shaft 35, not only can the rotating shaft 35 and the treatment member 37 be moved in the length direction of the lower limb, but the position or width of the treatment member 37 along the axial direction of the rotating shaft 35 can also be adjusted.

[0104] In addition, in the technology described in Patent Document 1, the treatment member is raised by rotating the feed screw (rotating shaft) in the forward direction, and the treatment member is lowered by rotating the feed screw in the reverse direction. That is, in order to move the treatment member in both the upward and downward directions, both the forward and reverse rotation of the feed screw are required (in other words, both the forward and reverse rotation of the electric motor). In contrast, the lower limb massager 10 of this embodiment can move the treatment member 37 in both the upward and downward directions by rotating the rotating shaft 35 in only one direction, and the rotation in the other direction can be used for position or width adjustment of the treatment member 37 along the axial direction of the rotating shaft 35.

[0105] (5) In this embodiment, the moving mechanism 23 has a movable frame 34 supported by a support frame 22 for free movement along the length direction of the lower limb, and the rotating shaft 35 is supported by the movable frame 34. With this structure, the rotating shaft 35 can be supported by the support frame 22 via the movable frame 34 for free movement along the length direction of the lower limb.

[0106] (6) In this embodiment, the drive unit (first drive unit) 36 is mounted on the movable frame 34. Therefore, the drive unit 36 ​​(electric motor 45, transmission unit 46) can also move along the length direction of the lower limb with the rotating shaft 35, without needing to fix the drive unit 36 ​​in a constant position. Therefore, space for fixing is not required, which helps to make the lower limb massager more compact.

[0107] (7) In this embodiment, the rotating shaft 35, the movable frame 34, and the drive unit 36 ​​(especially the electric motor 45) are arranged in a position that overlaps in the length direction of the lower limb. Therefore, the rotating shaft 35 can be compactly configured in the length direction of the lower limb.The movable frame 34 and the drive unit 36 ​​enable the range of movement in this direction to be expanded.

[0108] (8) In this embodiment, a plurality of treatment components 37 and 38 are provided corresponding to the left and right lower limbs, and the drive unit 36 ​​is arranged between the left and right treatment components 37 and 38. According to this structure, by effectively utilizing the space between the left and right lower limbs to arrange the drive unit 36, the lower limb massager 10 can be made compact. In addition, in this embodiment, since a second drive unit 41 (pump 73, control valve 74) is also arranged between the left and right treatment components 37 and 38, the lower limb massager 10 can be made compact.

[0109] (9) In this embodiment, a plurality of treatment components 37 and 38 are provided corresponding to the left and right lower limbs (calves L), and the rotation axis 35 extends in the left and right direction across the left and right treatment components 37 and 38. According to this structure, the left and right treatment components 37 and 38 can be moved along the length direction of the lower limb L by rotating a single rotating shaft 35. Furthermore, according to the specification page 9 / 10, CN 122272346 A, the left and right treatment components 37 and 38 can be mounted on a single rotating shaft 35.

[0110] (10) In this embodiment, the linkage mechanism 66 is disposed at the left and right ends of the moving mechanism 23. With this structure, the size of the lower limb massager 10 in the front-back or up-down direction can be suppressed. Furthermore, the rotating shaft 35 extends across the left and right treatment components 37 and 38 in the left and right direction, and the linkage mechanism 66 is disposed at both ends of the rotating shaft 35. With this structure, the linkage mechanisms 66 on both sides can be moved by rotating a single rotating shaft 35, allowing the rotating shaft 35 and the left and right treatment components 37 and 38 to move along the length direction of the lower limb L.

[0111] (11) In this embodiment, the first link member 67 and the second link member 68 of the linkage mechanism 66 are formed in the shape of plates and are arranged with the plate surface facing the left and right directions. With such a structure, the width of the linkage mechanism 66 in the left and right directions can be reduced, and even when the linkage mechanism 66 is arranged on the left and right sides of the moving mechanism 23, the size of the lower limb massager 10 in the left and right directions can be suppressed.

[0112] (12) In this embodiment, the lower limb massager 10 also has a force-applying member 55 that applies force to the treatment member (outer treatment member) 37 in the direction close to the lower limb. According to this structure, since the thickness of the lower limb varies depending on the position in the length direction, when the treatment member 37 is moved in the length direction of the lower limb, the treatment member 37 may leave the lower limb. However, in this embodiment, since the treatment member 37 is applied force by the force-applying member 55, it can reliably contact the lower limb. In addition, by applying force through the force-applying member 55, the therapeutic member 37 is pressed onto the lower limb L, which can effectively perform acupressure massage.

[0113] (13) In this embodiment, the treatment components 37 and 38 include a first treatment component (outer treatment component) 37 disposed on the side of the lower limb in the left-right direction and a second treatment component (rear treatment component) 38 disposed on the rear of the lower limb. With such a structure, massage can be performed on both the side and rear of the lower limb in the left-right direction.

[0114] (14) In this embodiment, the lower limb massager 10 also includes: an airbag (inner treatment component) 39 disposed on the lower limb and opposite to the treatment component (outer treatment component) 37, which is inflated by air supply; and a second drive unit 41 that drives the airbag 39. According to this structure, massage can be performed with the lower limb clamped from both sides using the treatment component 37 and the airbag 39. The airbag 39 can be formed relatively long in the length direction of the lower limb, so that even without moving up and down like the treatment component 37, a wide range of massage can be performed in the length direction of the lower limb.

[0115] (15) In this embodiment, the lower limb massager 10 has a control unit 75 that controls the drive unit 36 ​​and the second drive unit 41. The drive unit 36 ​​has an electric motor 45 that generates rotational power for the rotating shaft 35 and a current sensor 76 that detects the current value of the electric motor 45. When the current value of the electric motor 45 exceeds a predetermined threshold, the control unit 75 discharges air from the airbag 39. According to this structure, for example, when the load on the electric motor 45 becomes too large due to the strong pressure of the treatment member 37 on the lower limb, the current value flowing through the electric motor 45 becomes high. Therefore, by discharging the air from the airbag 39, the control unit 75 can reduce the force of the treatment member 37 pressing on the lower limb and reduce the load on the electric motor 45. In addition, since the current sensor 76 is provided for controlling the electric motor 45, for example, it is not necessary to separately provide a load sensor that detects the load applied to the treatment members 52 and 57, a rotation sensor that detects the rotation speed of the rotating shaft, etc., and the load on the electric motor 45 can be reduced. However, the lower limb massager 10 of this embodiment may also have the load sensor and rotation sensor described above.

[0116] The embodiments have been described above, but it should be understood that various changes in manner and details can be made without departing from the spirit and scope of the claims.

[0117] For example, in the above embodiment, the linkage mechanism 66 is composed of two linkage members, a first linkage member 67 and a second linkage member 68, but it may also have other linkage members.

[0118] The lower limb massager 10 is used in a posture with the lower limbs facing up and down, but it may also be used in other directions, such as a posture with the lower limbs facing forward and backward. In this case, the outer treatment member 37 and the rear treatment member 38 move in the forward and backward direction along the length of the lower limb. Specification 10 / 10 pages 13 CN 122272346 A Figure 1 Specification Drawings 1 / 12 pages 14 CNFigure 2 of 122272346 A (Instruction Manual Appendix 2 / 12, Page 15) Figure 3 of 122272346 A (Instruction Manual Appendix 3 / 12, Page 16) Figure 4 of 122272346 A (Instruction Manual Appendix 4 / 12, Page 17) Figure 5 of 122272346 A (Instruction Manual Appendix 5 / 12, Page 18) Figure 6 of 122272346 A (Instruction Manual Appendix 6 / 12, Page 19) Figure 7 of 122272346 A (Instruction Manual Appendix 7 / 12, Page 20) Figure 8 of 122272346 A (Instruction Manual Appendix 8 / 12, Page 21) Figure 9A of 122272346 A (Instruction Manual Appendix 9 / 12, Page 22) Figure 9B of 122272346 A (Instruction Manual Appendix 10 / 12, Page 23) Figure 9C of 122272346 A (Instruction Manual Appendix 11 / 12, Page 24) 122272346 A Figure 10 Description of the drawings 12 / 12 Page 25 CN 122272346 A Abstract The present invention provides a lower limb massager capable of moving treatment members through simple control. The lower limb massager consists of: members treatment (37, 38) for massaging lower limbs; the length direction of the lower limbs, the moving mechanism (23) comprises: a rotating shaft (35); a drive unit (36) for rotating the rotating shaft (35); a support frame (22) supports the rotating shaft (35) such that therotating shaft is movable along the length direction of the lower limbs; and a link mechanism (66) connecting the rotating shaft (35) and the support frame (22), expanding and contracting by rotation of the rotating shaft (35).

Claims

1. A lower limb massager, wherein, have: Therapeutic components for massaging the lower limbs; and A movable mechanism, connected to the treatment component, allows the treatment component to move along the length of the lower limb. The moving mechanism has: Rotation axis; The drive unit rotates the rotating shaft. A support frame supports the rotation axis so that it can move along the length of the lower limb; and A linkage mechanism connects the rotating shaft to the support frame, allowing it to extend and retract via the rotation of the rotating shaft.

2. The lower limb massager according to claim 1, wherein, The linkage mechanism includes: A first connecting rod component is fixed to the rotation axis and rotates together with the rotation axis; and The second link member is connected to the first link member at one end and to the support frame at the other end.

3. The lower limb massager according to claim 1 or 2, wherein, The treatment component is mounted on the rotating shaft.

4. The lower limb massager according to claim 3, wherein, A position adjustment mechanism is provided between the treatment component and the rotating shaft. The position adjustment mechanism adjusts the position of the treatment component in the axial direction of the rotating shaft by rotating the rotating shaft in both directions.

5. The lower limb massager according to claim 1 or 2, wherein, The moving mechanism has a movable frame supported by the support frame, allowing it to move freely along the length of the lower limb. The rotation axis is supported by the movable frame.

6. The lower limb massager according to claim 5, wherein, The drive unit is mounted on the movable frame.

7. The lower limb massager according to claim 6, wherein, The rotating shaft, the movable frame, and the drive unit are arranged at positions that overlap in the length direction of the lower limb.

8. The lower limb massager according to claim 1 or 2, wherein, The therapeutic components are provided in multiples corresponding to the left and right lower limbs. The drive unit is disposed between the left and right treatment components.

9. The lower limb massager according to claim 3, wherein, The therapeutic components are provided in multiples corresponding to the left and right lower limbs. The rotation axis extends in the left-right direction across the left and right treatment components.

10. The lower limb massager according to claim 1 or 2, wherein, The linkage mechanism is located at the left and right ends of the moving mechanism.

11. The lower limb massager according to claim 2, wherein, The first link member and the second link member are formed in the shape of plates and are arranged with the plate surfaces facing left and right.

12. The lower limb massager according to claim 1 or 2, wherein, It also has a force-applying component that applies force to the treatment component in a direction close to the lower limb.

13. The lower limb massager according to claim 1 or 2, wherein, The treatment component includes a first treatment component disposed on the lateral part of the lower limb in the left-right direction and a second treatment component disposed on the posterior part of the lower limb.

14. The lower limb massager according to claim 1 or 2, wherein, It also has: An airbag, positioned across the lower limb and opposite the treatment component, inflates upon supply of air; and The second drive unit drives the airbag.

15. The lower limb massager according to claim 14, wherein, It has a control unit that controls the drive unit and the second drive unit. The drive unit includes an electric motor that generates rotational power for the rotating shaft and a current sensor that detects the current value of the electric motor. When the current value of the electric motor exceeds a predetermined threshold, the control unit causes air to be expelled from the airbag.

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