CN-122003222-A - Massage unit and chair-type massage machine

Abstract

The massage unit includes a pair of left and right massage members provided on a base, and a driving mechanism for causing the pair of left and right massage members to approach and separate from each other to cause a kneading action on a treatment portion, the pair of left and right massage members being configured to include an arm portion whose base end is supported by the base via the driving mechanism, a support shaft provided on a distal end of the arm portion and on an inner side in a left-right direction so as to intersect a longitudinal direction of the arm portion, a first treatment element supported by the support shaft so as to be movable along the support shaft, and an elastic member for biasing the first treatment element toward an inner side in the left-right direction, the elastic member being elastically deformed in accordance with a load applied to the first treatment element, and the first treatment element being movable toward an outer side in the left-right direction along the support shaft.

Inventors

• SONE YASUSHI
• NAKAMURA TAKASHI
• SHIMIZU SHINSAKU

Assignees

• 大东电机工业株式会社

Dates

Publication Date

20260508

Application Date

20241120

Priority Date

20240416

Claims (8)

1. 1. A massage unit comprises a pair of left and right massage members provided on a base, and a drive mechanism for bringing the pair of left and right massage members closer to or farther from each other to knead a treatment part, The massage members arranged in a pair on the left and right are configured, The device comprises: an arm portion whose base end is supported by the base via the driving mechanism; A support shaft provided at the distal end of the arm portion and on the inner side in the lateral direction so as to intersect the longitudinal direction of the arm portion; A first treatment member supported by the support shaft so as to be movable along the support shaft, and An elastic member for biasing the first treatment element inward in the lateral direction; The elastic member is elastically deformed according to a load applied to the first treatment member, and the first treatment member is movable outward in the left-right direction along the support shaft.
2. 2. The massage unit of claim 1, wherein, The elastic member is a coil spring wound around an outer peripheral surface of the support shaft around an axial center of the support shaft.
3. 3. The massage unit of claim 2, wherein, A recess is formed in the first treatment element, the recess is fitted to the support shaft in a loose fitting state, and a receiving portion in which an elastic member is disposed is provided between the support shaft and the recess.
4. 4. The massage unit of claim 2, wherein, The arm portion is formed with a recess in which the support shaft is disposed and a portion of the first treatment element is slidably fitted, and the accommodation portion in which the elastic member is disposed is provided between the portion of the first treatment element and the recess.
5. 5. The massage unit of claim 1, wherein, The first treatment tool is provided on the inner side in the left-right direction and the second treatment tool is provided on the outer side in the left-right direction at the distal ends of the arm portions of the pair of right-left massage members so as to sandwich the arm portions.
6. 6. The massage unit of claim 5, wherein, The second treatment member is supported by the support shaft in a state in which movement in a direction along an axial center direction of the support shaft is restricted.
7. 7. The massage unit of claim 1, wherein, Has a kneading massage mechanism for kneading the treatment part, The pinch massage mechanism has a pinch treatment member arranged at a distance in the up-down direction with respect to the first treatment member, and the pinch treatment member is swung in the up-down direction by the driving mechanism.
8. 8. A chair-type massage machine having a seat portion and a backrest portion, the massage unit of any one of claims 1 to 7 being provided in the backrest portion.

Description

Massage unit and chair-type massage machine Technical Field The present application relates to a massage unit in which a treatment member moves from the outside in the lateral direction of a treatment portion according to a load, and a chair-type massage machine having the massage unit. The present application claims priority based on japanese patent No. 2024-065901 filed on 4/16/2024, and the entire contents described in the above japanese patent are incorporated herein by reference. Background Conventionally, as a massage device that imparts a massage operation to a treatment portion such as a shoulder portion and a neck portion of a user resting on a backrest portion, a massage device disclosed in patent literature 1 is known. Prior art literature Patent literature Patent document 1 Japanese patent application laid-open No. 2023-115160 Disclosure of Invention A massage unit according to an aspect of the present invention includes a pair of left and right massage members provided on a base, and a driving mechanism for causing the pair of left and right massage members to approach and separate from each other to perform a kneading operation on a treatment portion, wherein the pair of left and right massage members are configured to include an arm portion whose base end is supported by the base via the driving mechanism, a support shaft provided on a distal end of the arm portion and on an inner side in a left-right direction so as to intersect a longitudinal direction of the arm portion, a first treatment element supported by the support shaft so as to be movable along the support shaft, and an elastic member for applying a force to an inner side in the left-right direction of the first treatment element, the elastic member being elastically deformed in accordance with a load applied to the first treatment element, and the first treatment element being movable along the support shaft to an outer side in the left-right direction. Drawings Fig. 1 is a perspective view of a chair-type massage machine having a massage unit according to the embodiment, as viewed from the front left. Fig. 2 is a perspective view of the massage unit according to the embodiment when viewed from the front right. Fig. 3 is an exploded perspective view of the massage unit of the embodiment. Fig. 4 is an exploded perspective view of the massage member of the embodiment. Fig. 5 is a view showing a cross-sectional structure and a use mode of the treatment tool of the first embodiment, that is, the state in which the elastic member is free-length, from the back surface side. Fig. 6 is a view showing a sectional structure and a use mode of the treatment tool of the first embodiment, that is, a state in which the elastic member is elastically deformed, from the back surface side. Fig. 7 is a view showing a cross-sectional structure and a use mode of the treatment tool of the second embodiment, that is, a state in which the elastic member is free-length, from the back surface side. Fig. 8 is a view showing a sectional structure and a use mode of the treatment tool of the second embodiment, that is, a state in which the elastic member is elastically deformed, from the back surface side. Detailed Description < Problem to be solved by the invention > Patent document 1 discloses a massage unit including a treatment tool, an actuator that can expand and contract in a longitudinal direction, and an arm to which the treatment tool is attached at one end, wherein one end of the actuator is attached to the other end of the arm, a first rotation fulcrum that is a rotation fulcrum of the arm is provided in an intermediate portion of the arm, and a positional relationship between the first rotation fulcrum and a second rotation fulcrum that is a rotation fulcrum at the other end of the actuator or a positional relationship between the first rotation fulcrum and the other end of the actuator is fixed, and a pair of left and right rotation shafts that are the first rotation fulcrum can be rotated independently. In recent years, according to some user feedback, when kneading and massaging the neck, the massaging feel is slightly stronger than when massaging the shoulder. In particular, since the width of the treatment portion such as the neck varies in the lateral direction according to the physical constitution of the user, such comments can be easily fed back from the user having a thick neck. However, since the massaging device of patent document 1 sets the interval between the therapeutic elements in accordance with a predetermined therapeutic width, when a therapeutic portion having a narrow width such as the neck is treated, a force pressing the therapeutic portion tends to act in a direction to narrow the interval between the pair of massaging members, and there is a problem that the massaging feel is slightly strong for some users. The present invention has been made in view of the above-described problems, and an object thereof is to provide a ma