JP2017064050A - Massage machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a massage machine for allowing a treated person not to feel discomfort so much.SOLUTION: A massage machine includes treatment blocks 21, first arms 42, and second arms 52. The treatment blocks 21 are arranged inside a backrest and are movable with respect to the backrest in a height direction of the backrest. Each first arm 42 is driven by the treatment block 21 so as to be rotated with respect to the treatment block 21. Each second arm 52 is arranged beneath the first arm 42 and supported by the first arm 42 in a state where at least one motion between rotation and displacement with respect to the first arm 42 can be performed. Besides, the massage machine includes: first massage balls 41 supported by the first arms 42; and second massage balls 51 supported by the second arms 52.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a massage machine.

  A chair-type massage machine having a plurality of kneading balls is known. The massage machine of patent document 1 which is the example is a treatment block provided in the backrest, a pair of arms supported by the treatment block, a pair of first kneading balls supported by each of the pair of arms, and a pair of arms And a pair of second kneading balls disposed below the first kneading balls. This massage machine is further provided in the treatment block, and controls the strength drive unit that moves the first kneading ball in the front-rear direction of the backrest relative to the second kneading ball, and the control block and the strength drive unit. An apparatus is further provided.

  The control device adjusts the position of the treatment block in the height direction of the backrest so that the treatment site is treated by the first kneading balls and the second kneading balls. The control device further moves the first kneading balls in the front-rear direction under the control of the strength and weakness drive unit, and adjusts the force applied to the user by the first kneading balls.

JP 2013-158629 A

  According to the general shape of the human body, the iliac bone protrudes from the back. For this reason, according to the massage machine, the second kneading balls ride on the iliac bone of the user during the process in which the treatment block moves downward relative to the backrest, and the second kneading balls make strong contact with the user. However, the user may feel uncomfortable.

  An object of the present invention is to provide a massage machine that does not give discomfort to the user.

  One form of the massage machine according to the present invention is provided in a backrest, a treatment block movable with respect to the backrest in the height direction of the backrest, and the treatment block by being driven by the treatment block. A first arm that rotates and a second arm that is provided below the first arm and is supported by the first arm in a state in which at least one of rotation and displacement with respect to the first arm is possible. An arm, a first kneading ball supported by the first arm, and a second kneading ball supported by the second arm.

  Another embodiment of the massage machine according to the present invention is a treatment block that is provided in a backrest and is movable with respect to the backrest in the height direction of the backrest, and the treatment block in a state in which the treatment block can be rotated. A base arm supported by the base arm, a first arm supported by the base arm in a state capable of rotating with respect to the base arm, and a rotation with respect to the first arm provided below the first arm, A second arm supported by the base arm in a state in which at least one movement of displacement is possible, a first kneading ball supported by the first arm, and a second arm supported by the second arm 2 kneading balls.

  The massage machine is less likely to cause discomfort to the user.

The perspective view of the massage machine of Embodiment 1. FIG. The block diagram of the massage machine of FIG. The perspective view of the treatment unit of FIG. The side view of the treatment unit of FIG. The operation | movement figure which shows an example of the use condition of the massage machine of FIG. FIG. 6 is an operation diagram illustrating an example of a state in which a predetermined time has elapsed from FIG. The operation | movement figure which shows another example of the use condition of the massage machine of FIG. The block diagram of the massage machine of Embodiment 2. FIG. The side view of the treatment unit of a modification. The operation | movement figure which shows an example of the use condition of the massage machine of FIG. The side view of the treatment unit of a modification.

(An example of a form that a massage machine can take)
[1] One embodiment of a massage machine according to the present invention is a treatment block provided in a backrest and movable with respect to the backrest in the height direction of the backrest, and the treatment block driven by the treatment block A first arm that rotates relative to the first arm, and is provided below the first arm, and is supported by the first arm in a state in which at least one of rotation and displacement with respect to the first arm is possible. A second arm, a first kneading ball supported by the first arm, and a second kneading ball supported by the second arm.

  In the massage machine, when the second arm operates with respect to the first arm, the second kneading balls move in the front-rear direction with respect to the first kneading balls. Therefore, when the second kneading ball rides on the iliac bone of the user in the process in which the treatment block moves downward relative to the backrest, the second kneading ball moves backward along the shape of the iliac bone. In this way, the second arm operates with respect to the first arm. For this reason, the force by the contact between the second kneading balls and the user is buffered, and the second kneading balls are not likely to come into strong contact with the user. As described above, the massage machine is less likely to cause discomfort to the user.

  [2] According to an example of the massage machine, the massage machine further includes a base arm that is supported by the treatment block in a state in which the treatment block can be rotated and supports the first arm in a state in which the treatment block can be rotated. .

  According to the massage machine, the position of the first kneading balls in the front-rear direction is determined by rotating the basic arm with respect to the treatment block. Therefore, the first arm is supported by the treatment block in a state where the first arm can rotate with respect to the treatment block, and the first arm is rotated with respect to the treatment block, whereby the position of the first kneading balls in the front-rear direction is determined. Compared to the case, the moving range of the first kneading balls in the front-rear direction is wide. For this reason, various massage operations can be formed by the first kneading balls.

  [3] Another embodiment of the massage machine according to the present invention is provided in a backrest, a treatment block movable with respect to the backrest in a height direction of the backrest, and a state capable of rotating with respect to the treatment block A foundation arm supported by the treatment block; a first arm supported by the foundation arm in a state capable of rotating with respect to the foundation arm; and the first arm provided below the first arm. A second arm supported by the base arm in a state capable of at least one of rotation and displacement relative to the first arm, a first kneading ball supported by the first arm, and a support by the second arm A second kneading ball. According to the massage machine, substantially the same effect as that obtained by the massage machines of [1] and [2] can be obtained.

  [4] According to an example of the massage machine, the second arm is supported by the first arm in a state where the second arm can rotate with respect to the first arm, and the first arm rotates with respect to the base arm. The first rotation center that is the center and the second rotation center that is the rotation center of the second arm with respect to the first arm are provided at different positions.

  When the first rotation center and the second rotation center are provided at the same position, for example, the first arm, the second arm, and the base arm are supported by one shaft. In this case, the load acting on the first kneading balls and the second kneading balls may concentrate on the one shaft, and the deterioration of the shaft may be promoted. On the other hand, according to the massage machine, the shaft connecting the first arm and the base arm in a state where the first arm can rotate with respect to the base arm, and the second arm can rotate with respect to the first arm. In this state, the axis connecting the second arm and the first arm is different. For this reason, the load acting on the first kneading balls and the second kneading balls is dispersed, and the possibility that the deterioration of the shaft is promoted is reduced.

[5] According to an example of the massage machine, the second rotation center is provided in front of the first rotation center.
According to the massage machine, the length of the second arm can be set shorter than the case where the second rotation center is provided behind the first rotation center. For this reason, it can contribute to simplification of the structure of a massage machine.

[6] According to an example of the massage machine, the massage machine further includes an elastic member that applies force to the second arm so that the second kneading ball moves forward.
According to the massage machine, the movement of the second arm relative to the first arm is formed by the elastic member. For this reason, it is not necessary to mount an actuator for operating the second arm, and the configuration of the massage machine is simplified.

  [7] According to an example of the massage machine, the elastic member includes a first end and a second end, and the first arm has a first attachment portion to which the first end is attached. The second arm includes a second attachment portion to which the second end is attached.

  According to the massage machine, since the first attachment portion is provided on the first arm, the first attachment portion and the second attachment portion are compared with the case where the first attachment portion is provided on the treatment block, for example. The distance to is short. That is, the length of the elastic member can be set short. For this reason, it can contribute to simplification of the structure of a massage machine.

[8] According to an example of the massage machine, the elastic member is a tension spring, and the second attachment portion is provided on the side opposite to the second kneading balls with respect to the second rotation center. .
When the elastic member is, for example, a compression spring and the second attachment portion is provided on the second kneading ball side with respect to the second rotation center, it is difficult to secure a space for arranging the elastic member. This is related to the fact that the components of the treatment block are gathered in the space behind the second kneading ball side of the second rotation center of the second arm. On the other hand, according to the massage machine, since the second attachment portion is provided as described in [8] above, it is easy to arrange the elastic member.

  [9] According to an example of the massage machine, a load detection unit that detects a load acting on the second kneading balls, an actuator that operates the second arm with respect to the first arm, And a control device that controls the actuator based on the load detected by the load detection unit.

  According to the massage machine, the actuator is controlled so that the second kneading balls move in the front-rear direction with respect to the first kneading balls based on the load acting on the second kneading balls. The load acting on the second kneading balls has a correlation with the strength with which the second kneading balls contact the user. That is, the position of the second kneading balls in the front-rear direction is determined according to the strength with which the second kneading balls come into contact with the user. For this reason, even if the second kneading balls ride on the iliac bone of the user in the process in which the treatment block moves downward relative to the backrest, the actuator is based on the load acting on the second kneading balls at that time. Is controlled, and the second kneading balls move backward along the shape of the iliac bone. For this reason, the force by the contact between the second kneading balls and the user is buffered, and the second kneading balls are not likely to come into strong contact with the user. As described above, the massage machine is less likely to cause discomfort to the user.

  [10] According to an example of the massage machine, the control device moves the actuator so that the second kneading ball moves backward when the load detected by the load detection unit is equal to or greater than a predetermined load. Control.

  According to the massage machine, since the actuator is controlled as described in [10] above, the load acting on the second kneading balls is unlikely to be larger than the predetermined load. For this reason, the possibility that the second kneading balls come into strong contact with the user is reduced.

  [11] According to an example of the massage machine, the control device controls the actuator so that the moving speed of the second kneading balls increases as the load detected by the load detection unit increases.

  When the moving speed of the second kneading balls is constant, the force due to the contact between the second kneading balls and the user cannot be buffered depending on the magnitude of the load acting on the second kneading balls, The kneading balls may temporarily come into strong contact with the user. On the other hand, according to the massage machine, since the actuator is controlled as described in [11] above, even when the load acting on the second kneading balls is large, the contact between the second kneading balls and the user is performed. The force due to is easily buffered. For this reason, the possibility that the second kneading balls come into strong contact with the user is further reduced.

  [12] According to an example of the massage machine, the first arm rotates so that the first kneading ball is positioned most rearward, and the second kneading ball is positioned most rearward. In a state in which the second arm is operated, the second arm is configured such that the second kneading ball is located behind the first kneading ball.

  According to the massage machine, a state in which the force that the second kneading balls give to the user is smaller than that of the first kneading balls is easily maintained. For this reason, the massage machine is less likely to give discomfort to the user.

(Embodiment 1)
FIG. 1 is an appearance of the massage machine 1. The massage machine 1 is installed on an installation surface (not shown) such as a floor surface, and is driven by electric power supplied from a commercial power source (not shown). The massage machine 1 includes a chair 10, a treatment device 20, a controller 80, and a control device 90.

  The function of the chair 10 is to support the body. The chair 10 includes a seat 11, a backrest 12 disposed behind the seat 11, a pair of armrests 13 disposed on the side of the seat 11, and an ottoman 14 disposed in front of the seat 11. The backrest 12 includes an opening 12A. The opening 12A is formed in front of the backrest 12 and is covered with a cover 12B. For example, the backrest 12 is attached to the seat 11 so as to be rotatable about a connecting portion with the seat 11. The ottoman 14 is attached to the seat 11 so as to be rotatable about a connecting portion with the seat 11, for example.

  The function of the treatment device 20 is to form various massage operations. The treatment apparatus 20 includes a treatment unit 30 that includes a treatment block 21, a pair of rails 27, and a plurality of kneading balls 41 and 51.

  The function of the treatment block 21 is to drive the treatment unit 30. The treatment block 21 is provided in the backrest 12 and includes a plurality of machine elements. The treatment block 21 is attached to the rail 27 so as to be movable along the rail 27. The rail 27 is provided in the backrest 12 and extends in the height direction of the backrest 12. That is, the treatment block 21 is movable with respect to the backrest 12 in the height direction of the backrest 12.

The treatment unit 30 includes a pair of first kneading ball units 40, a pair of second kneading ball units 50, and a pair of foundation arms 60.
Each first kneading ball unit 40 has a line-symmetric relationship with respect to the center line in the width direction of the chair 10. The first kneading ball unit 40 includes a first kneading ball 41 and a first arm 42. The function of the first kneading balls 41 is to treat the body. The body is treated by the first massaging balls 41 coming into contact with the body. The first kneading balls 41 are attached to the tip of the first arm 42, for example. The function of the first arm 42 is to support the first kneading balls 41. The first arm 42 is rotatably supported by the base arm 60, for example.

  Each second kneading ball unit 50 has a line-symmetric relationship with respect to the center line in the width direction of the chair 10. The second kneading ball unit 50 includes a second kneading ball 51 and a second arm 52. The function of the second kneading balls 51 is to treat the body. The body is treated when the second kneading balls 51 come into contact with the body. The second kneading balls 51 are arranged below the first kneading balls 41 in the height direction of the backrest 12. The second kneading ball 51 is attached to the tip of the second arm 52, for example. The function of the second arm 52 is to support the second kneading balls 51. The second arm 52 is provided below the first arm 42 and is supported by the first arm 42 in a state where the second arm 52 can rotate with respect to the first arm 42.

  Each foundation arm 60 has a line-symmetric relationship with respect to the center line in the width direction of the chair 10. The function of the foundation arm 60 is to support the kneading ball units 40 and 50. The base arm 60 is supported by the treatment block 21 in a state where it can rotate with respect to the treatment block 21. The base arm 60 supports the first arm 42 in a state where it can rotate with respect to itself, for example.

  The function of the controller 80 is to input and output information related to the operation of the massage machine 1. The controller 80 includes, for example, a power button (not shown) for switching the power of the massage machine 1 on and off. The controller 80 is electrically connected to the control device 90. The controller 80 outputs the input information to the control device 90. The function of the control device 90 is to control the treatment block 21 based on information inputted from the controller 80. For example, the control device 90 is provided inside the seat 11.

  FIG. 2 shows an electrical connection relationship of the massage machine 1. The treatment block 21 includes a base portion 22, a vertical drive unit 23, a width drive unit 24, a strength drive unit 25, and a tapping drive unit 26. The function of the base portion 22 is to support the driving units 23 to 26. The base portion 22 is an assembly of a plurality of machine elements and forms a basic skeleton of the treatment block 21.

  The function of the vertical drive unit 23 is to move the kneading balls 41 and 51 with respect to the backrest 12 in the height direction of the backrest 12 (see FIG. 1). The vertical drive unit 23 includes a first rotating shaft (not shown) extending in the width direction of the chair 10 (see FIG. 1), and a motor 23A that is an actuator connected to the first rotating shaft via a plurality of gears. including. The first rotation shaft is rotatably supported by the base portion 22, for example. A plurality of pinions (not shown) are formed on the first rotating shaft. The pinion is meshed with a rack (not shown) formed on the rail 27 so that the pinion can move on the rail 27 (see FIG. 1). When the control device 90 rotates the motor 23 </ b> A, the treatment block 21 moves along the rail 27, and the kneading balls 41, 51 move integrally in the height direction of the backrest 12.

  The function of the width drive unit 24 is to move the kneading balls 41 and 51 with respect to the chair 10 in the width direction of the chair 10. The width driving unit 24 includes a second rotating shaft (not shown) extending in the width direction of the chair 10 and a motor 24A that is an actuator connected to the second rotating shaft via a plurality of gears. The second rotating shaft is, for example, a ball screw, and includes a pair of screw shafts and a pair of nuts. One foundation arm 60 is attached to one nut. The other foundation arm 60 is attached to the other nut. When the control device 90 rotates the motor 24 </ b> A, each nut moves with respect to the screw shaft, and each foundation arm 60 moves in the width direction of the chair 10. For this reason, the kneading balls 41 and 51 move in the width direction of the chair 10. One kneading balls 41 and 51 and the other kneading balls 41 and 51 move in directions opposite to each other in the width direction of the chair 10.

  The function of the strength and weakness drive unit 25 is to move the kneading balls 41 and 51 with respect to the chair 10 in the front-rear direction of the chair 10. The strength and weakness drive unit 25 includes a third rotation shaft 25B (see FIG. 3) extending in the width direction of the chair 10, and a fourth rotation shaft (FIG. 3) for transmitting rotation to the third rotation shaft 25B via a plurality of gears. And a motor 25A that is an actuator connected to the fourth rotation shaft via a plurality of gears. Each foundation arm 60 is fixed to the third rotating shaft 25B, for example. The third rotating shaft 25B is rotatably supported by the base portion 22, for example. When the control device 90 rotates the motor 25A, the third rotation shaft 25B rotates through the fourth rotation shaft and the plurality of gears, and the base arm 60 rotates around the third rotation shaft 25B. For this reason, the 1st arm 42 rotates with respect to the treatment block 21 by driving with the strength drive part 25, and each kneading ball 41 and 51 rotates integrally around the 3rd rotating shaft 25B. That is, the kneading balls 41 and 51 are moved in the front-rear direction of the chair 10, and the strength with which the kneading balls 41 and 51 contact the body is adjusted.

  The function of the hitting drive unit 26 is to cause the first massaging ball 41 to form a hitting massage operation. The hitting drive unit 26 is a pair of swing shafts 26B (see FIG. 3) fixed to the first arms 42, a crank shaft (not shown) that rotates eccentrically, and a pair that connects the crank shaft and the swing shaft 26B. And a motor 26A which is an actuator connected to the crankshaft via a plurality of gears. For example, the link converts the rotational motion of the crankshaft into a reciprocating linear motion and transmits the motion to the swing shaft 26B.

  The first kneading ball unit 40 further includes a first support shaft 43 (see FIG. 3) coaxial with a first rotation center RC1 (see FIG. 3) that is a rotation center of the first arm 42 with respect to the base arm 60. . The function of the first support shaft 43 is to connect the first arm 42 and the base arm 60 so that the first arm 42 can rotate with respect to the base arm 60. That is, the first arm 42 is rotatably supported by the base arm 60 via the first support shaft 43. Therefore, when the control device 90 rotates the motor 26A, the swing shaft 26B forms a reciprocating linear motion via the crankshaft and the link, and the first support shaft 43 so that the first arm 42 swings. Rotate around. That is, the first massaging ball 41 forms a hitting massage operation.

  FIG. 3 shows a specific configuration of the treatment unit 30. The second kneading ball unit 50 further includes a second support shaft 53 that is coaxial with the second rotation center RC2 that is the rotation center of the second arm 52 with respect to the first arm 42. The function of the second support shaft 53 is to connect the second arm 52 and the first arm 42 so that the second arm 52 can rotate with respect to the first arm 42. That is, the second arm 52 is rotatably supported by the first arm 42 via the second support shaft 53.

  The second rotation center RC2 is provided at a position different from the first rotation center RC1. Specifically, the second rotation center RC2 is provided in front of the first rotation center RC1 in the front-rear direction of the chair 10 (see FIG. 1). That is, the second support shaft 53 is provided in front of the first support shaft 43 in the front-rear direction of the chair 10.

  The treatment unit 30 further includes an elastic member 70. The function of the elastic member 70 is to apply a force to the second arm 52 so that the second kneading ball 51 moves forward with respect to the first kneading ball 41 in the front-rear direction of the chair 10. The elastic member 70 is, for example, a tension spring, and includes a first end portion 70A and a second end portion 70B. The first arm 42 includes a first attachment portion 44 to which the first end portion 70A of the elastic member 70 is attached. The second arm 52 includes a second attachment portion 54 to which the second end portion 70B of the elastic member 70 is attached. The second attachment portion 54 is provided, for example, on the side opposite to the second kneading balls 51 with respect to the second rotation center RC2. The elastic member 70 gives the second arm 52 a force for pulling the second attachment portion 54 toward the first attachment portion 44 in the front-rear direction of the chair 10.

FIG. 4 shows the operation of the second massaging ball unit 50. FIG. 4 shows a state in which the first arm 42 is rotated so that the first kneading ball 41 is positioned most rearward.
The treatment unit 30 further includes a stopper 45. The function of the stopper 45 is to restrict the rotatable range of the second arm 52 relative to the first arm 42. The stopper 45 is provided, for example, on the first arm 42 and is surrounded by a recess 52 </ b> A formed on the second arm 52. When the stopper 45 comes into contact with a part of the recess 52 </ b> A of the second arm 52, one rotation of the second arm 52 relative to the first arm 42 is restricted. When the stopper 45 comes into contact with another part of the recess 52 </ b> A of the second arm 52, the other rotation of the second arm 52 with respect to the first arm 42 is restricted.

  The second arm 52 rotates relative to the first arm 42 according to the load acting on the second kneading balls 51. The load acting on the second kneading balls 51 is, for example, a reaction force received from the body by the second kneading balls 51 in contact with the body. The elastic member 70 expands and contracts when the second arm 52 rotates with respect to the first arm 42.

  When the load acting on the second kneading balls 51 is substantially zero, the second kneading balls 51 are located in the foremost direction in the front-rear direction of the chair 10 (see FIG. 1). At this time, the stopper 45 is in contact with a part of the recess 52 </ b> A of the second arm 52. That is, the elastic member 70 forms the most contracted state. In addition, the continuous line of FIG. 4 shows the state which the 2nd arm 52 rotated so that the 2nd kneading ball 51 may be located in the forefront.

  As the load acting on the second kneading balls 51 increases, the second kneading balls 51 move backward with respect to the first kneading balls 41 in the front-rear direction of the chair 10. When the load acting on the second kneading balls 51 exceeds a predetermined load, the second kneading balls 51 are located in the rearmost direction in the front-rear direction of the chair 10. At this time, the stopper 45 is in contact with another part of the recess 52 </ b> A of the second arm 52. That is, the elastic member 70 forms the most extended state. The predetermined load depends on the elastic coefficient of the elastic member 70. 4 indicates a state in which the second arm 52 is rotated so that the second kneading ball 51 is positioned most rearward.

  As the load acting on the second kneading balls 51 becomes smaller, the second kneading balls 51 move forward with respect to the first kneading balls 41 in the front-rear direction of the chair 10 by the elastic force of the elastic member 70. As described above, the elastic member 70 expands and contracts according to the load acting on the second kneading balls 51, and the second kneading balls 51 move with respect to the first kneading balls 41 in the front-rear direction of the chair 10.

  As shown in FIG. 4, the first arm 42 rotates so that the first kneading ball 41 is located most rearward, and the second arm 52 is arranged so that the second kneading ball 51 is located most rearward. In the rotated state, the second arm 52 is configured such that the second kneading balls 51 are positioned behind the first kneading balls 41. In the state where the first arm 42 is rotated so that the first kneading ball 41 is located at the rearmost position and the second arm 52 is rotated so that the second kneading ball 51 is located at the most front position, The second arm 52 is configured to extend in the height direction of the backrest 12 (see FIG. 1).

With reference to FIGS. 5-7, the effect | action of the massage machine 1 is demonstrated.
A user H who uses the massage machine 1 operates the power button of the controller 80 to turn on the massage machine 1. When the power is set to ON, the massage machine 1 controls the treatment block 21 so that various massage operations are formed based on information input from the controller 80. Below, an example of massage operation is explained.

  As shown in FIG. 5, the control device 90 of the massage machine 1 controls the treatment block 21 so that the treatment unit 30 moves downward from above in the height direction of the backrest 12, for example. Specifically, for example, the strength driving unit 25 is controlled so that the kneading balls 41 and 51 come into contact with the back of the person H to be treated, and the kneading balls 41 and 51 are treated while moving. Various treatment blocks 21 are controlled so as to treat the back of the person H. Accordingly, the back of the user H is stretched while being treated. In this massage operation, for example, the strength driving unit 25 is controlled so that a state in which the first arm 42 is rotated so that the first kneading ball 41 is positioned most rearward or a state close thereto is formed. The

  As shown in FIG. 6, the second massaging ball 51 rides on the iliac bone I of the user H in the process in which the treatment unit 30 moves downward with respect to the backrest 12. At this time, the load acting on the second kneading balls 51 is increased, and the second arm 52 is so moved that the second kneading balls 51 move rearward along the shape of the iliac bone I in the front-rear direction of the chair 10. Rotates relative to the first arm 42. For this reason, even if the second massaging ball 51 rides on the iliac bone I of the user H, the force due to the contact between the second massaging ball 51 and the user H is buffered. It is difficult to make strong contact with the patient H.

  As shown in FIG. 7, the control device 90 controls the treatment block 21 so that the treatment unit 30 treats the neck and shoulders of the user H who is the treatment site, for example. Specifically, for example, the strength driving unit 25 is controlled such that the first kneading balls 41 are in contact with the neck or the periphery thereof, and the second kneading balls 51 are in contact with the shoulder blades or the periphery thereof. Various treatment blocks 21 are controlled so that 41 and 51 treat the neck and shoulders. As a result, the user H is given a massage feeling that rubs the neck and shoulders. In this massage operation, for example, the strength driving unit 25 is controlled so that a state in which the first arm 42 is rotated so that the first kneading ball 41 is positioned most forward or a state close thereto is formed. The

  When the load acting on the second kneading balls 51 in this massage operation increases, the second arm 52 moves the first arm 42 so that the second kneading balls 51 move rearward in the front-rear direction of the chair 10. Rotate against. For this reason, the force by the contact with the 2nd massaging ball 51 and the user H is buffered, and the 2nd massaging ball 51 does not contact the user H strongly.

  Thus, since the 2nd massaging ball 51 moves with respect to the 1st massaging ball 41 according to the load which acts on the 2nd massaging ball 51, the massage machine 1 is treated. It is difficult to make strong contact with the person H. For this reason, the massage machine 1 is unlikely to give discomfort to the user H.

According to the first embodiment, the following effects can be further obtained.
(1) According to the massage machine 1, the first arm 42 is rotatably supported by the base arm 60, and the base arm 60 is rotatably supported by the treatment block 21. For this reason, when the basic arm 60 rotates with respect to the treatment block 21, the position of the 1st kneading ball 41 in the front-back direction is determined. Therefore, when the first arm 42 is rotatably supported by the treatment block 21 and the first arm 42 rotates with respect to the treatment block 21, the position of the first kneading balls 41 in the front-rear direction is determined. Compared with, the movement range of the 1st kneading ball 41 in the front-back direction is wide. For this reason, various massage operations can be formed by the first kneading balls 41.

  (2) When the first rotation center RC1 and the second rotation center RC2 are provided at the same position, for example, the first arm 42, the second arm 52, and the base arm 60 are supported by one shaft. The In this case, the load acting on the first kneading balls 41 and the second kneading balls 51 is concentrated on the one shaft, and the deterioration of the shaft may be promoted. On the other hand, according to the massage machine 1, the first rotation center RC1 and the second rotation center RC2 are provided at different positions. That is, the massage machine 1 includes a first support shaft 43 that supports the first arm 42 and a second support shaft 53 that supports the second arm 52. For this reason, the load which acts on the kneading balls 41 and 51 is dispersed, and the possibility that the deterioration of the support shafts 43 and 53 is promoted is reduced.

  (3) According to the massage machine 1, the second rotation center RC2 is provided in front of the first rotation center RC1 in the front-rear direction of the chair 10. For this reason, compared with the case where 2nd rotation center RC2 is provided back rather than 1st rotation center RC1, the length of the 2nd arm 52 can be set short. For this reason, it can contribute to simplification of the structure of the massage machine 1. FIG.

  (4) According to the massage machine 1, the first arm 42 rotates so that the first kneading ball 41 is positioned most rearward, and the second kneading ball 51 is positioned most rearward. In a state where the arm 52 is rotated, the second arm 52 is configured such that the second kneading ball 51 is positioned behind the first kneading ball 41. According to the configuration of the second arm 52, it is easy to maintain a state in which the force applied to the user H by the second kneading balls 51 is smaller than that of the first kneading balls 41. For this reason, the massage machine 1 is more difficult to give discomfort to the user H.

  (5) According to the massage machine 1, the rotation of the second arm 52 relative to the first arm 42 is formed by the elastic member 70. For this reason, it is not necessary to mount the actuator for rotating the 2nd arm 52, and the structure of the massage machine 1 is simplified.

  (6) According to the massage machine 1, since the first mounting portion 44 is provided on the first arm 42, the first mounting portion 44 is provided as compared with the case where the first mounting portion 44 is provided on the treatment block 21, for example. The distance between the portion 44 and the second attachment portion 54 is short. That is, the length of the elastic member 70 can be set short. For this reason, it can contribute to simplification of the structure of the massage machine 1. FIG.

  (7) When the elastic member 70 is a compression spring, for example, and the second attachment portion 54 is provided on the second kneading ball 51 side with respect to the second rotation center RC2, a space for arranging the elastic member 70 is secured. Hard to do. This is because the components of the treatment block 21 such as the swing shaft 26B are gathered in the space behind the second kneading ball 51 on the second rotation center RC2 side of the second arm 52. Is related. On the other hand, according to the massage machine 1, since the elastic member 70 is a tension spring and the second attachment portion 54 is provided on the side opposite to the second kneading balls 51 with respect to the second rotation center RC2, it is elastic. The member 70 is easy to arrange.

  (8) According to the massage machine 1, the first arm 42 rotates so that the first kneading ball 41 is positioned most rearward, and the second kneading ball 51 is positioned most forward. In a state where the arm 52 is rotated, the second arm 52 is configured to extend in the height direction of the backrest 12. According to the configuration of the second arm 52, when the second kneading ball 51 contacts the user H in the above state, the direction of the force that the second kneading ball 51 receives from the user H and the first The deviation from the direction in which the second kneading balls 51 move is small. For this reason, when the second kneading balls 51 are in strong contact with the user H in the above state, the second kneading balls 51 are likely to move backward in the front-rear direction of the chair 10. For this reason, the possibility that the second kneading balls 51 are in strong contact with the user H in the above state is further reduced.

(Embodiment 2)
The massage machine 1 of Embodiment 2 is different from the massage machine 1 of Embodiment 1 in the points described below, and has substantially the same configuration as the massage machine 1 of Embodiment 1 in other points. In addition, description of the massage machine 1 of Embodiment 2 attaches | subjects the same code | symbol to the structure which is common in the massage machine 1 of Embodiment 1, and abbreviate | omits part or all of description of the structure.

FIG. 8 shows an electrical connection relationship of the massage machine 1. In the massage machine 1 of the second embodiment, the elastic member 70 and the like are omitted from the massage machine 1 of the first embodiment.
The massage machine 1 further includes two load detection units 100. The function of the load detection unit 100 is to detect a load acting on the second kneading balls 51. An example of the load detection unit 100 is a strain sensor. One load detection unit 100 is attached to one second arm 52, for example. The other load detection unit 100 is attached to, for example, the other second arm 52. The load detection unit 100 is electrically connected to the control device 90. Each load detection unit 100 outputs information regarding the detected load to the control device 90.

  The treatment block 21 further includes a pair of rotation drive units 28. The function of the rotation drive unit 28 is to move the second kneading balls 51 with respect to the first kneading balls 41 in the front-rear direction of the chair 10 (see FIG. 1). The rotation drive unit 28 includes a second support shaft 53 (see FIG. 3), and a motor 28A that is an actuator connected to the second support shaft 53 via a plurality of gears and the like. When the control device 90 rotates the motor 28 </ b> A, the second support shaft 53 rotates through a plurality of gears and the like, and the second arm 52 rotates with respect to the first arm 42. For this reason, the second kneading balls 51 move in the front-rear direction of the chair 10.

  The control device 90 controls the rotation drive unit 28 based on the load detected by each load detection unit 100. Specifically, when the control device 90 determines that the load acting on the second kneading balls 51 is greater than or equal to a predetermined load based on the information input from the load detection unit 100, the control device 90 in the longitudinal direction of the chair 10 The corresponding motor 28A is controlled so that the second kneading balls 51 move backward. The predetermined load is stored in advance in a memory (not shown) of the control device 90, for example. On the other hand, after the motor 28A is controlled so that the second kneading balls 51 move backward in the front-rear direction of the chair 10, the difference between the load acting on the second kneading balls 51 and a predetermined load opens. The control device 90 controls the corresponding motor 28A so that the second kneading ball 51 moves forward in the front-rear direction of the chair 10, for example.

  The control device 90 further controls the motor 28 </ b> A so that the moving speed of the second kneading balls 51 increases as the load detected by the load detection unit 100 increases. The relationship between the load acting on the second kneading balls 51 and the moving speed of the second kneading balls 51 is stored in advance in the memory of the control device 90, for example.

According to the second embodiment, in addition to the effects (1) to (4) obtained by the first embodiment, the following effects are further obtained.
(9) According to the massage machine 1, the motor 28 </ b> A is controlled so that the second kneading balls 51 move in the front-rear direction with respect to the first kneading balls 41 based on the load acting on the second kneading balls 51. Is done. The load acting on the second kneading balls 51 has a correlation with the strength with which the second kneading balls 51 come into contact with the user H. That is, the position of the second kneading balls 51 in the front-rear direction is determined according to the strength with which the second kneading balls 51 come into contact with the user H. For this reason, even if the second massaging ball 51 rides on the iliac bone I of the user H in the process in which the treatment unit 30 moves downward with respect to the backrest 12, it acts on the second massaging ball 51 at that time. The motor 28 </ b> A is controlled based on the load to be moved, and the second kneading balls 51 move rearward along the shape of the iliac I. For this reason, the force by the contact with the 2nd massaging ball 51 and the user H is buffered, and the 2nd massaging ball 51 does not contact the user H strongly. Thus, the massage machine 1 is unlikely to give discomfort to the user H.

  (10) When the load detected by the load detection unit 100 is equal to or greater than a predetermined load, the control device 90 of the massage machine 1 sets the motor 28A so that the second kneading ball 51 moves backward in the front-rear direction of the chair 10. Control. For this reason, the load acting on the second kneading balls 51 is unlikely to be larger than the predetermined load. For this reason, the possibility that the second kneading balls 51 come into strong contact with the user H is reduced.

  (11) When the moving speed of the second kneading balls 51 is constant, depending on the magnitude of the load acting on the second kneading balls 51, the force due to the contact between the second kneading balls 51 and the user H can be increased. The second kneading balls 51 may temporarily come into strong contact with the user H without being fully buffered. On the other hand, according to the massage machine 1, the motor 28 </ b> A is controlled so that the moving speed of the second kneading balls 51 increases as the load detected by the load detection unit 100 increases. Even when the applied load is large, the force caused by the contact between the second kneading balls 51 and the user H is easily buffered. For this reason, the possibility that the second kneading balls 51 come into strong contact with the user H is further reduced.

(Modification)
The description regarding each said embodiment is an illustration of the form which the massage machine according to this invention can take, and it does not intend restrict | limiting the form. In addition to the above-described embodiments, the massage machine according to the present invention can take a form in which, for example, modifications of the embodiments shown below and at least two modifications not contradicting each other are combined.

  -According to the massage machine 1 of the modification of Embodiment 1, as shown in FIG. 9, the 1st arm 42 rotates so that the 1st kneading ball 41 may be located in the backmost part, and the 2nd kneading ball The second arm 52 is configured to extend in the front-rear direction of the chair 10 in a state in which the second arm 52 is rotated so that 51 is positioned at the foremost position. The smaller angle formed by the direction in which the first arm 42 extends and the direction in which the second arm 52 extends is, for example, 90 ° or an angle close thereto. In addition, the continuous line of FIG. 9 shows the state which the 2nd arm 52 rotated so that the 2nd kneading ball 51 may be located in the foremost, and a dashed-two dotted line shows that the 2nd kneading ball 51 is located in the most back. Shows a state in which the second arm 52 is rotated.

  As shown in FIG. 10, the control device 90 of the massage machine 1 controls the treatment block 21 such that the treatment unit 30 treats the neck and shoulders of the user H who is the treatment site. In this massage operation, for example, the strength driving unit 25 is controlled so that a state in which the first arm 42 is rotated so that the first kneading ball 41 is positioned most forward or a state close thereto is formed. According to the structure of the 2nd arm 52, when the 2nd massaging ball 51 contacts the user H in the above state, the direction of the force that the second massaging ball 51 receives from the user H, and the second The deviation from the direction in which the kneading balls 51 move is small. For this reason, when the second kneading balls 51 are in strong contact with the user H in the above state, the second kneading balls 51 are likely to move backward in the front-rear direction of the chair 10. For this reason, the possibility that the second kneading balls 51 are in strong contact with the user H in the above state is further reduced.

-The 1st attaching part 44 of the modification of Embodiment 1 is provided in the base arm 60. As shown in FIG. The first attachment portion 44 of another modification is provided on the treatment block 21.
-It can change arbitrarily whether the elastic member 70 of Embodiment 1 is a tension spring. According to an example, the elastic member 70 is a compression spring. In this modification, the second attachment portion 54 is provided on the second kneading ball 51 side with respect to the second rotation center RC2, for example. According to this modification, the elastic member 70 gives the second arm 52 a force that pushes the second attachment portion 54 to the opposite side of the first attachment portion 44 in the front-rear direction of the chair 10.

  The control device 90 of the second embodiment can arbitrarily change whether to control the motor 28A so that the moving speed of the second kneading balls 51 increases as the load detected by the load detection unit 100 increases. is there. According to an example, when the load detected by the load detection unit 100 is equal to or greater than a predetermined load, the control device 90 controls the motor 28A so that the moving speed of the second kneading balls 51 is constant.

  -The number of the load detection parts 100 of Embodiment 2 can be changed arbitrarily. According to an example, the massage machine 1 includes one load detection unit 100 attached to one second arm 52. In this modification, the control device 90 controls the rotation drive unit 28 so that each second kneading ball 51 moves integrally in the front-rear direction of the chair 10 based on the load detected by one load detection unit 100. Control. According to another example, the massage machine 1 includes three or more load detection units 100.

-It can change arbitrarily whether the load detection part 100 of Embodiment 2 is a distortion sensor. According to an example, the load detection unit 100 is a pressure sensor.
Whether or not the load detection unit 100 of the second embodiment is attached to the second arm 52 can be arbitrarily changed. According to an example, the load detection unit 100 is attached to the second kneading ball 51. According to another example, the load detection unit 100 is attached to the second support shaft 53.

  -According to the massage machine 1 of a modification, the 2nd arm 52 is supported by the base arm 60 in the state which can be rotated with respect to the 1st arm 42 as FIG. 11 shows. According to this modification, substantially the same effect as the configuration in which the second arm 52 is supported by the first arm 42 in a state where the second arm 52 can rotate with respect to the first arm 42 can be obtained.

  In the state where the first arm 42 is rotated so that the first kneading ball 41 is located at the rearmost position, and the second arm 52 is rotated so that the second kneading ball 51 is located at the most rearward position, It can be arbitrarily changed whether or not the second arm 52 is configured such that the second kneading balls 51 are positioned behind the first kneading balls 41. According to an example, the second arm 52 is configured so that the second kneading balls 51 are present at substantially the same position in the front-rear direction of the chair 10 in the above state. According to another example, the second arm 52 is configured so that the second kneading balls 51 are positioned in front of the first kneading balls 41 in the above state.

  -Whether the second rotation center RC2 is provided in front of the first rotation center RC1 in the front-rear direction of the chair 10 can be arbitrarily changed. According to an example, the second rotation center RC2 is provided behind the first rotation center RC1 in the front-rear direction of the chair 10. According to another example, the second rotation center RC2 is provided at substantially the same position as the first rotation center RC1 in the front-rear direction of the chair 10.

  -Whether or not the second rotation center RC2 is provided at a position different from the first rotation center RC1 can be arbitrarily changed. According to an example, the second rotation center RC2 exists coaxially with the first rotation center RC1. According to this modification, the first support shaft 43 and the second support shaft 53 are constituted by, for example, one shaft.

  -According to the massage machine 1 of a modification, the basic arm 60 is abbreviate | omitted from the treatment unit 30. FIG. According to this modification, the first arm 42 is supported by the treatment block 21 in a state where the first arm 42 can rotate with respect to the treatment block 21, for example.

  Whether or not the second arm 52 is supported by the first arm 42 in a state where the second arm 52 can rotate with respect to the first arm 42 can be arbitrarily changed. According to an example, the second arm 52 is supported by the first arm 42 in a state where the second arm 52 can be displaced with respect to the first arm 42. Specifically, the second arm 52 is slidably supported by the first arm 42 in the front-rear direction of the chair 10, for example. For this reason, when the second arm 52 is displaced with respect to the first arm 42, the second kneading balls 51 move in the front-rear direction of the chair 10 with respect to the first kneading balls 41. The elastic member 70 in this modification is, for example, a compression spring. According to another example, the second arm 52 is supported by the first arm 42 in a state in which both the rotation and displacement of the first arm 42 are possible.

According to the massage machine 1 of the modified example, at least one of the width driving unit 24, the strength driving unit 25, and the tapping driving unit 26 is omitted from the treatment block 21.
-According to the massage machine 1 of a modification, at least one of the armrest 13 and the ottoman 14 is omitted from the chair 10.

  The massage machine according to the present invention can be used for various massage machines including home use and business use.

1: Massage machine 12: Backrest 21: Treatment block 28A: Motor (actuator)
41: 1st massaging ball 42: 1st arm 44: 1st attachment part 51: 2nd massaging ball 52: 2nd arm 54: 2nd attachment part 60: Base arm 70: Elastic member 70A: First end portion 70B: Second end portion 90: Control device 100: Load detection unit RC1: First rotation center RC2: Second rotation center

Claims (12)

A treatment block provided in the backrest and movable relative to the backrest in the height direction of the backrest;
A first arm that rotates relative to the treatment block by being driven by the treatment block;
A second arm provided below the first arm and supported by the first arm in a state in which at least one of rotation and displacement with respect to the first arm is possible;
A first kneading ball supported by the first arm;
A massage machine comprising: a second kneading ball supported by the second arm. The massage machine according to claim 1, further comprising a base arm that is supported by the treatment block in a state in which the treatment block can be rotated and supports the first arm in a state in which the treatment block can rotate. A treatment block provided in the backrest and movable relative to the backrest in the height direction of the backrest;
A foundation arm supported by the treatment block in a state capable of rotating with respect to the treatment block;
A first arm supported by the base arm in a state capable of rotating with respect to the base arm;
A second arm provided below the first arm and supported by the base arm in a state in which at least one of rotation and displacement with respect to the first arm is possible;
A first kneading ball supported by the first arm;
A massage machine comprising: a second kneading ball supported by the second arm. The second arm is supported by the first arm in a state capable of rotating with respect to the first arm,
The first rotation center that is the rotation center of the first arm with respect to the base arm and the second rotation center that is the rotation center of the second arm with respect to the first arm are provided at different positions. Item 3. A massage machine according to item 2. The massage machine according to claim 4, wherein the second rotation center is provided in front of the first rotation center. The massage machine according to any one of claims 1 to 5, further comprising an elastic member that applies force to the second arm so that the second kneading ball moves forward. The elastic member includes a first end and a second end;
The first arm includes a first attachment portion to which the first end is attached;
The massage machine according to claim 6, wherein the second arm includes a second attachment portion to which the second end is attached. The elastic member is a tension spring;
The massage machine according to claim 7, wherein the second attachment portion is provided on a side opposite to the second kneading balls with respect to the second rotation center. A load detector for detecting a load acting on the second kneading balls;
An actuator for operating the second arm relative to the first arm;
The massage machine as described in any one of Claims 1-5 further provided with the control apparatus which controls the said actuator based on the said load detected by the said load detection part. The massage machine according to claim 9, wherein the control device controls the actuator so that the second kneading balls move backward when the load detected by the load detection unit is equal to or greater than a predetermined load. The massage machine according to claim 9 or 10, wherein the control device controls the actuator so that the moving speed of the second kneading balls increases as the load detected by the load detection unit increases. In a state where the first arm rotates so that the first kneading ball is positioned most rearward and the second arm is operated so that the second kneading ball is positioned most rearward, The massage machine according to any one of claims 1 to 11, wherein the second arm is configured such that two kneading balls are positioned rearward of the first kneading balls.

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