Chair-type massage machine

Abstract

The present invention provides a chair-type massage machine that allows for easy attachment of armrests to the chair body. [Solution] The chair-type massage machine comprises a chair body 11 including a seat 13, armrests 12 positioned on the left and right sides of the seat 13, a first positioning part 21 and a second positioning part 31 for positioning the armrests 12 relative to the chair body 11, an airbag 18 provided on the armrests 12 for performing massage, and a supply path 50 for supplying air to the airbag 18. The supply path 50 has a connecting part 51 in the middle that can be connected to disconnect the supply path 50, and the first positioning part 21 and the second positioning part 31 are positioned with the connecting part 51 in between in at least one of the front-to-back, up-and-down, and left-to-right directions.

Description

[Technical Field]

[0001] The present invention relates to a chair-type massage machine. [Background Art]

[0002] The following Patent Document 1 discloses a chair-type massage machine. This chair-type massage machine comprises a seat portion that supports the buttocks of a user from below, a backrest portion provided at a rear portion of the seat portion, and armrest portions provided on both left and right sides of lateral portions of the seat portion. The armrest portions are provided with airbags that can be inflated by air pressure, and the airbags massage the arms of the user placed on the armrest portions.

[0003] The armrest portions are detachably attached to left and right lateral portions of the seat portion. Specifically, brackets each having a vertically penetrating through-hole are provided at two front and rear positions on the left and right lateral portions of the seat portion, and downwardly protruding engagement rods are provided at two front and rear positions on the armrest portions. By inserting the two engagement rods into the through-holes of the brackets respectively, the armrest portions can be attached in a state positioned on the left and right lateral portions of the seat portion. [Prior Art Document] [Patent Document]

[0004] [Patent Document 1] Japanese Unexamined Patent Publication No. 2023-40730 [Summary of the Invention] [Problem to be Solved by the Invention]

[0005] In a chair-type massage machine including an airbag in an armrest portion, a pump for supplying air to the airbag is usually provided on the seat portion side (the chair body side). Patent Document 1 does not disclose any connection method between the airbag and the pump when attaching the armrest portions to the left and right lateral portions of the seat portion. The work of attaching the armrest portions to the left and right lateral portions of the seat portion requires not only the attachment of the armrest portions themselves but also the connection between the airbags and the pump, so the complexity of the work can be easily imagined.

[0006] Furthermore, in the chair-type massage machine described in Patent Document 1, attaching the armrests to the left and right sides of the seat requires simultaneously aligning and inserting the two engaging rods of the armrests into the through-holes of the bracket, making the alignment process difficult. In particular, the engaging rods are located on the inside (seat side) of the armrests in the left-right direction, and the brackets are located lower than the seat surface of the seat, making it difficult to see the connection between the two, thus further complicating the alignment process.

[0007] The present invention aims to provide a chair-type massage machine that allows for easy attachment of armrests to the chair body. [Means for solving the problem]

[0008] (1) The chair-type massage machine of this disclosure is The chair body, including the seat, Armrests are positioned on the left and right sides of the aforementioned seat, A first positioning unit and a second positioning unit for positioning the armrest portion relative to the chair body, The aforementioned airbag provided in the armrest and which performs massage, It includes a supply path for supplying air to the airbag, The supply path has a connecting section in the middle that allows the supply path to be disconnected and reconnected. The first positioning portion and the second positioning portion are arranged with the connecting portion in between in at least one of the following directions: front-to-back, up-and-down, and left-to-right. Furthermore, the above statement that "the first positioning unit and the second positioning unit are arranged with the connecting unit in between in at least one of the front-to-back, up-and-down, and left-to-right directions" includes cases where the first positioning unit and the second positioning unit are arranged with the connecting unit in between in two or more directions, not limited to just one of the front-to-back, up-and-down, and left-to-right directions.

[0009] (2) The chair-type massage machine described in (1) above is The first positioning unit is The chair comprises a first positioning pin provided on one of the chair body and the armrest, and a first insertion hole provided on the other of the chair body and the armrest into which the first positioning pin is inserted. The second positioning unit, The chair comprises a second positioning pin provided parallel to the first positioning pin on one of the chair body and the armrest, and a second insertion hole provided on the other of the chair body and the armrest into which the second positioning pin is inserted. The connecting portion comprises a connector pin provided parallel to the first positioning pin on one of the armrest portion and the chair body, and a connector receiving portion provided on the other of the armrest portion and the chair body, having a connector insertion hole into which the connector pin can be inserted.

[0010] (3) In the chair-type massage machine of this disclosure, the chair body includes a seat, Armrests are positioned on the left and right sides of the aforementioned seat, A first positioning unit, a second positioning unit, and a third positioning unit for positioning the armrest portion relative to the chair body, The aforementioned airbag provided in the armrest and which performs massage, It includes a supply path for supplying air to the airbag, The supply path has a connecting section in the middle that allows the supply path to be disconnected and reconnected. The first positioning portion, the second positioning portion, and the third positioning portion are arranged to surround the connecting portion in a side view or a top view.

[0011] (4) In the chair-type massage machine described in (2) above, the first positioning unit is The chair comprises a first positioning pin provided on one of the chair body and the armrest, and a first insertion hole provided on the other of the chair body and the armrest into which the first positioning pin is inserted. The second positioning unit, a second positioning pin provided on one of the chair body and the armrest portion in parallel with the first positioning pin, and a second insertion hole provided on the other of the chair body and the armrest portion into which the second positioning pin is inserted, the third positioning portion includes: a third positioning pin provided on one of the chair body and the armrest portion in parallel with the first positioning pin, and a third insertion hole provided on the other of the chair body and the armrest portion into which the third positioning pin is inserted, the connection portion includes: a connector pin provided on one of the armrest portion and the chair body in parallel with the first positioning pin, and a connector receiving portion provided on the other of the armrest portion and the chair body and having a connector insertion hole into which the connector pin can be inserted.

[0012] (5) In the chair-type massage machine according to any one of (2) or (4) above, a second insertion length of the second positioning pin into the second insertion hole is shorter than a first insertion length of the first positioning pin into the first insertion hole.

[0013] (6) In the chair-type massage machine according to (4) above, a second insertion length of the second positioning pin into the second insertion hole and a third insertion length of the third positioning pin into the third insertion hole are both shorter than a first insertion length of the first positioning pin into the first insertion hole.

[0014] (7) In the chair-type massage machine according to any one of (1) to (4) above, a fourth insertion length of the connector pin into the connector insertion hole is equal to or shorter than the second insertion length.

[0015] (8) The chair-type massage machine of the present disclosure comprises: a chair body including a seat portion, armrest portions disposed on left and right sides of the seat portion, a first positioning portion and a second positioning portion that position the armrest portions with respect to the chair body, the first positioning portion includes: a first positioning pin provided on one of the chair body and the armrest portion, and a first insertion hole provided on the other of the chair body and the armrest portion into which the first positioning pin is inserted, the second positioning portion includes a second positioning pin provided parallel to the first positioning pin on one of the chair body and the armrest portion, and a second insertion hole provided on the other of the chair body and the armrest portion into which the second positioning pin is inserted, a second insertion length of the second positioning pin into the second insertion hole is shorter than a first insertion length of the first positioning pin into the first insertion hole.

[0016] (9) In the chair-type massage machine according to (8) above, further comprising: an air bag provided on the armrest portion for performing massage; and a supply path for supplying air to the air bag, the supply path has, in the middle thereof, a connecting portion that connects the supply path in a connectable and disconnectable manner, the connecting portion includes: a connector pin provided parallel to the first positioning pin on one of the armrest portion and the chair body; and a connector receiving portion provided on the other of the armrest portion and the chair body and having a connector insertion hole into which the connector pin can be inserted, a fourth insertion length of the connector pin into the connector insertion hole is equal to or shorter than the second insertion length.

[0017] (10) In the chair-type massage machine according to (8) or (9) above, further comprising a third positioning portion that positions the armrest portion with respect to the chair body, the third positioning portion includes a third positioning pin provided parallel to the first positioning pin on one of the chair body and the armrest portion, and a third insertion hole provided on the other of the chair body and the armrest portion into which the third positioning pin is inserted, a third insertion length of the third positioning pin into the third insertion hole is shorter than the first insertion length.

[0018] (11) In any one of the chair-type massage machines described in (1) to (10) above, the first positioning unit includes a biasing member that biases the first positioning pin in a direction that causes it to move away from the first insertion hole, before the first positioning pin is inserted into the first insertion hole and the second positioning pin is inserted into the second insertion hole.

[0019] (12) In the chair-type massage machine described in (11) above, the biasing member is a compression coil spring attached to the outer circumference of the first positioning pin. [Effects of the Invention]

[0020] According to the chair-type massage machine of the present invention, the armrests can be easily attached to the chair body. [Brief explanation of the drawing]

[0021] [Figure 1] Figure 1 is a perspective view of a chair-type massage machine according to an embodiment of the present invention. [Figure 2] Figure 2 is a side view of the armrest base of the chair body as seen through the line A in Figure 1. [Figure 3] Figure 3 is a view taken along arrow C in Figure 2. [Figure 4] Figure 4 is a side view of the armrest as seen through the line B in Figure 1. [Figure 5] Figure 5 is a view taken along arrow D in Figure 4. [Figure 6A] Figure 6A is a cross-sectional view of the prepositioning section in the direction of arrow EE in Figure 1. [Figure 6B] Figure 6B is an enlarged cross-sectional view of section H in Figure 6A. [Figure 7A] Figure 7A is a cross-sectional view of the rear positioning section in the direction of the FF arrow in Figure 1. [Figure 7B] Figure 7B is an enlarged cross-sectional view of section J in Figure 7A. [Figure 8A] Figure 8A is a cross-sectional view showing the connection point of the air supply path of the airbag as seen from the direction of the GG arrow in Figure 1. [Figure 8B] Figure 8B is an enlarged cross-sectional view of section K in Figure 8A. [Figure 9] Figure 9 is an explanatory diagram showing the relationship between the insertion length of the positioning pin in the positioning section and the insertion length of the connector pin in the connection section. [Modes for carrying out the invention]

[0022] Embodiments of this disclosure will be described below with reference to the drawings. Figure 1 is a perspective view of a chair-type massage machine according to an embodiment of the present invention. In the following explanation, the directions "left," "right," "front," and "rear" used in reference to the chair-type massage machine 10 correspond to "left," "right," "front," and "rear" as viewed from the perspective of a user seated in the chair-type massage machine 10.

[0023] The chair-type massage machine 10 of this embodiment has a chair body 11 and an armrest 12 attached to the chair body 11. The chair body 11 has a seat 13 that supports the user's buttocks from below, a backrest 14 that extends upward from the rear of the seat 13, and a footrest 15 provided at the front of the seat 13.

[0024] The backrest 14 is equipped with a massage device 91 that massages the user's waist, back, neck, etc. The massage device 91 is movable vertically along a guide rail 92 that extends vertically and is provided inside the backrest 14. The seat 13 and footrest 15 are also equipped with massage devices (not shown) that massage the user's buttocks, legs, etc.

[0025] Figure 2 is a side view of the armrest base of the chair body as seen through arrow A in Figure 1. Figure 4 is a side view of the armrest as seen through arrow B in Figure 1.

[0026] As shown in Figures 1 and 2, the chair body 11 has armrest bases 16 on both the left and right sides of the seat 13 for attaching the armrests 12. The armrest bases 16 are formed in a roughly rectangular plate shape when viewed from the side, and cover the seat 13 and the space below the seat 13 from the outside in the left-right direction.

[0027] As shown in Figure 1, the armrest portion 12 is attached to the upper part of the left and right armrest bases 16. The armrest portion 12 is formed in a roughly trapezoidal or rhombic shape when viewed from the side. The lower part of the armrest portion 12 overlaps the left and right outer edges of the armrest bases 16, and the upper part overlaps the upper part of the armrest bases 16.

[0028] The armrest portion 12 is equipped with a therapeutic device 18 for massaging the user's arm. Specifically, a groove 12a is formed on the upper part of the armrest portion 12, which is open to the inside (seat portion 13 side) in the left-right direction and extends in the front-back direction, and the therapeutic device 18 is positioned within this groove 12a. The therapeutic device 18 in this embodiment is an airbag. The airbag 18 is inflated by compressed air supplied from a pump 19 (see Figure 8A) provided on the chair body 11. Therefore, by inserting the user's arm into the groove 12a of the armrest portion 12 while seated on the seat portion 13 and inflating the airbag 18, the user's arm can be massaged.

[0029] Figures 2 and 4 show the armrest base 16 and armrest portion 12 located on the left side of the chair-type massage machine 10. The armrest base 16 and armrest portion 12 located on the right side of the chair-type massage machine 10 are mirror images of the left-side armrest base 16 and armrest portion 12 in the left-right direction. Therefore, the left and right armrest bases 16 and armrest portions 12 have the same configuration, differing only in their orientation in the left-right direction.

[0030] In this embodiment, the armrest portion 12 is configured to be detachably attached to the armrest base 16 of the chair body 11. In this embodiment, the armrest portion 12 is attached to the armrest base 16 by lowering the armrest portion 12 from above to below the armrest base 16 and placing the armrest portion 12 on the armrest base 16. Furthermore, by removing the armrest portion 12 from the chair body 11, the packaging size of the chair-type massage machine 10 can be reduced, making it easier to transport the chair-type massage machine 10.

[0031] The chair-type massage machine 10 of this embodiment has a plurality of positioning parts 21, 31, 41 for positioning the armrest part 12 in an appropriate mounting position when attaching the armrest part 12 to the armrest base 16. Each positioning part 21, 31, 41 has an engaged part 22, 32, 42 provided on the armrest base 16 as shown in Figure 2, and an engaged part 23, 33, 43 provided on the armrest part 12 as shown in Figure 4.

[0032] The chair-type massage machine 10 of this embodiment has three positioning parts 21, 31, and 41. Specifically, the chair-type massage machine 10 has a front positioning part 21 located at the very front, a rear positioning part 31 located at the very back, and an intermediate positioning part 41 located between the front positioning part 21 and the rear positioning part 31 in the front-rear direction.

[0033] The rear positioning section 31 is positioned higher than the front positioning section 21. The intermediate positioning section 41 is positioned higher than both the front positioning section 21 and the rear positioning section 31. Therefore, focusing on the vertical position, the front positioning section 21 can also be called the lower positioning section, the intermediate positioning section 41 can also be called the upper positioning section, and the rear positioning section 31 can also be called the intermediate positioning section.

[0034] Figure 3 is a view taken along arrow C in Figure 2. Figure 5 is a view taken along arrow D in Figure 4. As shown in Figures 3 and 5, in the left-right direction, the rear positioning section 31 is positioned further inward than the front positioning section 21. The intermediate positioning section 41 is positioned further inward than both the front positioning section 21 and the rear positioning section 31. In this specification, when describing the positions of multiple positioning sections 21, 31, and 41, a common part is used as the reference point. Specifically, the positions of each positioning section 21, 31, and 41 in this embodiment are described based on the positions P1, P2, and P3 of the openings (insertion ports) in the insertion holes 25, 35, and 45 (described later) that constitute the engaged sections 22, 32, and 42, as shown in Figures 2 and 3.

[0035] The structures of the three positioning sections 21, 31, and 41 will be described in more detail below. Figure 6A is a cross-sectional view of the front positioning section in the direction of arrow EE in Figure 1. Figure 6B is an enlarged cross-sectional view of section H in Figure 6A. As shown in Figures 2, 3, 6A, and 6B, a mounting bracket 24, which constitutes the engaged portion 22 of the front positioning portion 21, is fixed to the left-right outer side surface of the armrest base 16. The mounting bracket 24 protrudes outward in the left-right direction from the left-right outer side surface of the armrest base 16. An insertion hole 25 is formed in the mounting bracket 24. Specifically, the insertion hole 25 is a hole that penetrates the mounting bracket 24 in the vertical direction. However, the insertion hole 25 does not have to penetrate the mounting bracket 24 in the vertical direction; it may be a closed hole that opens at the vertical end face of the mounting bracket 24.

[0036] As shown in Figures 4, 5, 6A, and 6B, a mounting bracket 26, which constitutes the engaging portion 23 of the front positioning portion 21, is fixed to the inner side surface of the armrest portion 12 in the left-right direction. The mounting bracket 26 protrudes inward in the left-right direction from the inner side surface of the armrest portion 12 in the left-right direction. A positioning pin 27, which constitutes the engaging portion 23, is fixed to the mounting bracket 26.

[0037] The positioning pin 27 is formed in a cylindrical shape. The positioning pin 27 is positioned with its axis oriented vertically. The upper end of the positioning pin 27 is fixed to the mounting bracket 26. The positioning pin 27 has a large-diameter portion 27a fixed to the mounting bracket 26 and a small-diameter portion 27b provided below the large-diameter portion 27a and having a smaller outer diameter than the large-diameter portion 27a.

[0038] The positioning pin 27 is inserted into the insertion hole 25 from above. The opening at the upper end of the insertion hole 25, formed on the upper surface of the mounting bracket 24, serves as the entrance (insertion port) for inserting the positioning pin 27. At least a portion of the large-diameter portion 27a of the positioning pin 27 is located inside the insertion hole 25. By inserting the positioning pin 27 into the insertion hole 25, the armrest portion 12 is positioned relative to the armrest base 16.

[0039] Since the positioning pin 27 has a small diameter portion 27b at its tip (lower end), it is easy to align it with the insertion hole 25 and easy to insert into the insertion hole 25. Since at least a part of the large diameter portion 27a of the positioning pin 27 is positioned inside the insertion hole 25, the play of the positioning pin 27 inside the insertion hole 25 can be reduced.

[0040] A compression coil spring 28, which constitutes a biasing member, is attached to the outer circumferential surface of the positioning pin 27. The upper end of the compression coil spring 28 is in contact with the lower surface of the mounting bracket 26 of the engaging portion 23. The lower end of the compression coil spring 28 is in contact with the upper surface of the mounting bracket 24 of the engaged portion 22. The compression coil spring 28 is compressed between the mounting bracket 26 of the engaging portion 23 and the mounting bracket 24 of the engaged portion 22. The compression coil spring 28 biases the positioning pin 27 upward. In other words, the compression coil spring 28 biases the positioning pin 27 in the direction of disengaging it from the insertion hole 25.

[0041] Figure 7A is a cross-sectional view of the rear positioning section in the direction of the FF arrow in Figure 1. Figure 7B is an enlarged cross-sectional view of section J in Figure 7A. As shown in Figures 2, 3, 7A, and 7B, a mounting bracket 34, which constitutes the engaged portion 32 of the rear positioning portion 31, is fixed to the left-right outer side surface of the armrest base 16. The mounting bracket 34 protrudes outward in the left-right direction from the left-right outer side surface of the armrest base 16. An insertion hole 35 is formed in the mounting bracket 34. Specifically, the insertion hole 35 is a hole that penetrates the mounting bracket 34 in the vertical direction. The insertion hole 35 does not have to penetrate the mounting bracket 34 in the vertical direction; it may be a closed hole that opens at the vertical end face of the mounting bracket 34.

[0042] As shown in Figures 4, 5, 7A, and 7B, a mounting bracket 36, which constitutes the engaging portion 33 of the rear positioning portion 31, is fixed to the inner side surface of the armrest portion 12 in the left-right direction. The mounting bracket 36 protrudes inward in the left-right direction from the inner side surface of the armrest portion 12 in the left-right direction. A positioning pin 37, which constitutes the engaging portion 33 of the rear positioning portion 31, is fixed to the mounting bracket 36.

[0043] The positioning pin 37 is formed in a cylindrical shape. The positioning pin 37 is positioned with its axis facing vertically. The upper end of the positioning pin 37 is fixed to the mounting bracket 36. The positioning pin 37 is inserted into the insertion hole 35 from above. This positions the armrest portion 12 relative to the armrest base 16. The opening at the upper end of the insertion hole 35, formed on the upper surface of the mounting bracket 34, serves as the entrance (insertion port) for inserting the positioning pin 37.

[0044] As shown in Figures 7A and 7B, the rear positioning section 31 has a connecting section 38 that connects the armrest section 12 and the armrest base 16. The mounting bracket 36 in the engaging section 33 of the rear positioning section 31 is provided with a hook member 38A that constitutes the connecting section 38. This hook member 38A is pivotably attached to the mounting bracket 36 via a mounting shaft 38B that extends in the front-rear direction.

[0045] A U-shaped curved hook 38A1 is formed at the end of the hook member 38A below the mounting shaft 38B. The lower surface of the hook 38A1 forms a U-shaped curved guide surface. The end of the hook member 38A above the mounting shaft 38B forms an operating part 38A2 for swinging the hook member 38A around the mounting shaft 38B.

[0046] The mounting bracket 34 in the engaged portion 32 of the rear positioning portion 31 is provided with a hook receiving portion 38C that constitutes a connecting portion 38. The hook receiving portion 38C is formed in a substantially horizontal plate shape. The hook 38A1 of the hook member 38A hooks onto the hook receiving portion 38C from below. This restricts the armrest portion 12 from detaching upward from the armrest base 16, and connects the armrest portion 12 and the armrest base 16. The hook member 38A can be switched between a state in which the hook 38A1 is hooked onto the hook receiving portion 38C and a state in which the hook 38A1 is detached from the hook receiving portion 38C by swinging around the mounting shaft 38B.

[0047] Although not shown in the diagram, the hook member 38A is provided with a biasing member that biases the hook 38A1 in the direction of hooking onto the hook receiving portion 38C. When the positioning pin 37 is inserted into the insertion hole 35, the lower surface (guide surface) of the hook 38A1 comes into contact with the hook receiving portion 38C, causing the hook member 38A to swing against the biasing member. Once the hook 38A1 passes over the hook receiving portion 38C, the biasing member causes the hook 38A1 to catch on the hook receiving portion 38C. With the hook 38A1 caught on the hook receiving portion 38C, the hook 38A1 can be released from the hook receiving portion 38C by pressing the operating portion 38A2 of the hook member 38A.

[0048] As shown in Figures 2 to 5, Figure 7A, and Figure 7B, the intermediate positioning section 41 has an engaged portion 42, an engaging portion 43, and a connecting portion 48. These have substantially the same configuration as the engaged portion 32, engaging portion 33, and connecting portion 38 of the rear positioning section 31. Therefore, a detailed explanation of the intermediate positioning section 41 is omitted, and in Figures 7A and 7B, the reference numerals of the corresponding components of the intermediate positioning section 41 are added in parentheses to the reference numerals of the components of the rear positioning section 31.

[0049] Figure 8A is a cross-sectional view showing the connection point of the air supply path of the airbag as seen from the direction of arrow GG in Figure 1. Figure 8B is an enlarged cross-sectional view of section K in Figure 8A. As mentioned above, an airbag 18 is provided in the armrest 12 as a therapeutic device. Compressed air generated by a pump 19 is supplied to this airbag 18. The pump 19 is located below the chair body 11, for example, the seat 13 or the backrest 14. The pump 19 and the airbag 18 are connected by an air pipe 50. The air pipe 50 serves as the supply path for compressed air.

[0050] The air pipe 50 has a connection section 51 in the middle of its longitudinal direction. The connection section 51 has a connector pin 57 and a connector receiving section 54. The connector pin 57 and the connector receiving section 54 can be detachably connected. By detaching the connector pin 57 and the connector receiving section 54, the air pipe 50 can be divided in the middle of its longitudinal direction.

[0051] The connector pin 57 is provided on the armrest portion 12. The connector pin 57 is formed in a cylindrical shape. The connector pin 57 is positioned with its axis oriented in the vertical direction. The connector pin 57 is positioned parallel to the positioning pins 27, 37, and 47 of each positioning portion 21, 31, and 41.

[0052] The connector receiving portion 54 is provided on the armrest base 16. The connector receiving portion 54 has a connector insertion hole 55 that opens upward and into which the connector pin 57 is inserted. The opening at the upper end of the connector insertion hole 55 serves as the insertion port (entrance) when inserting the connector pin 57. By connecting the connector pin 57 to the connector receiving portion 54, the pump 19 and the airbag 18 are connected by the air piping 50, enabling the supply of air from the pump 19 to the airbag 18.

[0053] The positional relationships between each positioning part 21, 31, and 41 and the connecting part 51 will be explained below with reference to Figures 2 and 3. As mentioned above, the positions of the positioning parts 21, 31, and 41 are based on the positions P1 to P3 of the upper openings (insertion ports) in the insertion holes 25, 35, and 45. The position of the connecting part 51 is based on the position P4 of the upper opening (insertion port) in the connector insertion hole 55 of the connector receiving part 54.

[0054] As shown in Figure 2, in the front-rear direction, the position P4 of the connecting portion 51 is located between the position P1 of the front positioning portion 21 and the position P2 of the rear positioning portion 31. As shown in Figure 2, in the front-rear direction, the position P4 of the connecting portion 51 is located between the position P2 of the rear positioning portion 31 and the position P3 of the intermediate positioning portion 41.

[0055] As shown in Figure 2, in the vertical direction, the position P4 of the connecting portion 51 is located between the position P1 of the front positioning portion 21 and the position P3 of the intermediate positioning portion 41. As shown in Figure 2, in the vertical direction, the position P4 of the connecting portion 51 is located between the position P2 of the rear positioning portion 31 and the position P3 of the intermediate positioning portion 41.

[0056] As shown in Figure 3, in the left-right direction, the position P4 of the connecting portion 51 is located between the position P1 of the front positioning portion 21 and the position P3 of the intermediate positioning portion 41.

[0057] As shown in Figure 2, in a side view, when line segments are drawn connecting the position P1 of the front positioning section 21, the position P2 of the rear positioning section 31, and the position P3 of the intermediate positioning section 41, these line segments form a triangle R1. In other words, the front positioning section 21, the rear positioning section 31, and the intermediate positioning section 41 are positioned at the vertices of triangle R1. The position P4 of the connecting section 51 is located within the range of triangle R1. Therefore, in a side view, the connecting section 51 is surrounded by the front positioning section 21, the rear positioning section 31, and the intermediate positioning section 41.

[0058] As shown in Figure 3, in a top view, when line segments are drawn connecting the position P1 of the front positioning section 21, the position P2 of the rear positioning section 31, and the position P3 of the intermediate positioning section 41, these line segments form a triangle R2. In other words, the front positioning section 21, the rear positioning section 31, and the intermediate positioning section 41 are positioned at the vertices of triangle R2. The position P4 of the connecting section 51 is located within the range of triangle R2. Therefore, in a top view, the connecting section 51 is surrounded by the front positioning section 21, the rear positioning section 31, and the intermediate positioning section 41.

[0059] As described above, the connecting portion 51 is positioned between multiple positioning portions 21, 31, and 41 in the front-to-back, up-and-down, or left-to-right directions. This arrangement minimizes twisting of the connecting portion 51 caused by wobbling of the armrest portion 12, stabilizes the connection state at the connecting portion 51, and suppresses air leakage from the connecting portion 51. Furthermore, the connecting portion 51 is surrounded by three positioning portions 21, 31, and 41 in a side view or top view. Therefore, similarly to the above, twisting of the connecting portion 51 caused by wobbling of the armrest portion 12 can be minimized, stabilizes the connection state at the connecting portion 51, and suppresses air leakage from the connecting portion 51.

[0060] Figure 9 is an explanatory diagram showing the relationship between the insertion length of the positioning pin in the positioning section and the insertion length of the connector pin in the connection section. In Figure 9, the vertical positions of each positioning part 21, 31, and 41, i.e., the positions P1 to P3 of the insertion holes 25, 35, and 45, and the vertical position of the connecting part 51, i.e., the position P4 of the connector insertion hole 55, are depicted side by side at the same height.

[0061] Figure 9(a) shows the state in which the positioning pins 27, 37, and 47 are inserted into the insertion holes 25, 35, and 45 of the respective positioning parts 21, 31, and 41, and the state in which the connector pin 57 is inserted into the connector insertion hole 55 of the connection part 51.

[0062] Figures 9(b) and 9(c) show the process by which the positioning pins 27, 37, and 47 of each positioning section 21, 31, and 41 are inserted into the insertion holes 25, 35, and 45, and the process by which the connector pin 57 of the connecting section 51 is inserted into the connector insertion hole 55.

[0063] As shown in Figure 9(a), if the insertion length of the positioning pin 27 into the insertion hole 25 of the front positioning section 21 is L1, the insertion length of the positioning pin 37 into the insertion hole 35 of the rear positioning section 31 is L2, and the insertion length of the positioning pin 47 into the insertion hole 45 of the intermediate positioning section 41 is L3, then the relationships L1>L2, L1>L3, and L2=L3 hold.

[0064] Furthermore, if L4 is the insertion length of the connector pin 57 into the connector insertion hole 55 of the connection part 51, then the relationships L2 > L4 and L3 > L4 hold.

[0065] When attaching the armrest portion 12 to the armrest base 16, the positioning pin 27 of the front positioning portion 21 first reaches the insertion hole 25 (see Figure 9(b)). If the positioning pin 27 of the front positioning section 21 is then inserted into the insertion hole 25, the positioning pins 37 and 47 of the rear positioning section 31 and the intermediate positioning section 41 will then reach the insertion holes 35 and 45 (see Figure 9(c)). Furthermore, as the positioning pins 27, 37, and 47 of each positioning section 21, 31, and 41 are inserted into the insertion holes 25, 35, and 45, the connector pin 57 of the connecting section 51 reaches the connector insertion hole 55 and is inserted.

[0066] Therefore, when attaching the armrest portion 12 to the armrest base 16, the position of the armrest portion 12 relative to the armrest base 16 can be determined to some extent by first aligning the positioning pin 27 of the front positioning portion 21 with the insertion hole 25 and inserting it. In this state, the positioning pins 37 and 47 of the rear positioning portion 31 and the intermediate positioning portion 41 can be aligned with the insertion holes 35 and 45 and inserted, making the work easier compared to aligning and inserting all the positioning pins 27, 37, and 47 into the insertion holes 25, 35, and 45 simultaneously.

[0067] When the positioning pins 27, 37, and 47 of all the positioning parts 21, 31, and 41 are inserted into the insertion holes 25, 35, and 45, the position of the armrest part 12 relative to the armrest base 16 is almost determined, so the connector pin 57 of the connection part 51 can be automatically aligned and inserted into the connector insertion hole 55, and the previously separated supply path 50 can be connected.

[0068] As shown in Figure 9(b), the compression coil spring 28 attached to the positioning pin 27 of the front positioning section 21 comes into contact with the upper surface of the mounting bracket 24 after the positioning pin 27 is started to be inserted into the insertion hole 25, and is compressed as the positioning pin 27 is inserted into the insertion hole 25. The compression coil spring 28 applies a biasing force to the armrest section 12 in the direction that moves the positioning pin 27 away from the insertion hole 25, i.e., upward, and elastically supports the armrest section 12 from below. Therefore, it is possible to suppress the forceful insertion of the positioning pin 27 into the insertion hole 25 due to the load of the armrest section 12.

[0069] As shown in Figure 9(c), the compression coil spring 28 is compressed before the positioning pins 37 and 47 of the rear positioning section 31 and the intermediate positioning section 41 are inserted into the insertion holes 35 and 45, and elastically supports the armrest section 12 from below. This makes it easier to align the positioning pins 37 and 47 with the insertion holes 35 and 45. In addition, the compression coil spring 28 can prevent the positioning pins 37 and 47 from being forcefully inserted into the insertion holes 35 and 45 due to the load of the armrest section 12.

[0070] As shown in Figure 7B, when the positioning pins 37 and 47 of the rear positioning section 31 and the intermediate positioning section 41 are inserted into the insertion holes 35 and 45, the lower surfaces of the hooks 38A1 and 48A1 of the hook members 38A and 48A come into contact with the hook receiving sections 38C and 48C. The hook members 38A and 48A swing as the hooks 38A1 and 48A1 move over the hook receiving sections 38C and 48C and catch on the lower surfaces of the hook receiving sections 38C and 48C. This connects the armrest section 12 to the armrest base 16.

[0071] To remove the armrest 12 from the armrest base 16, the hook members 38A and 48A are swung by pressing the operating parts 38A2 and 48A2, thereby detaching the hooks 38A1 and 48A1 from the hook receiving parts 38C and 48C. This releases the connection at the connecting part 38, allowing the armrest 12 to be removed upward from the armrest base 16.

[0072] (Other embodiments) In the above embodiment, positioning pins 27, 37, 47 (engaging parts 23, 33, 43) of a plurality of positioning parts 21, 31, 41 were provided on the armrest part 12, and insertion holes 25, 35, 45 (engaged parts 22, 32, 42) were provided on the armrest base 16 (chair body 11). However, the embodiment is not limited to this, and all or some of the positioning pins 27, 37, 47 may be provided on the armrest base 16, and all or some of the insertion holes 25, 35, 45 may be provided on the armrest part 12.

[0073] In the above embodiment, the connector pin 57 of the connecting portion 51 was provided on the armrest portion 12 and the connector insertion hole 55 (connector receiving portion 54) was provided on the armrest base 16. However, the connector pin 57 of the connecting portion 51 may be provided on the armrest base 16 and the connector insertion hole 55 (connector receiving portion 54) may be provided on the armrest portion 12.

[0074] The positioning pins 27, 37, and 47 are arranged parallel to each other. This "parallelism" does not need to be actual parallelism, but may include slight inclination within an error range (approximately ±3°). In other words, the positioning pins 27, 37, and 47 may be slightly inclined to the extent that they can be inserted into the insertion holes 25, 35, and 45 without twisting. Furthermore, the positioning pins 27, 37, and 47 and the insertion holes 25, 35, and 45 do not have to be oriented vertically; they may be oriented horizontally, or oriented in a direction that is inclined relative to both the vertical and horizontal directions.

[0075] The insertion length L2 of the positioning pin 37 into the insertion hole 35 of the rear positioning section 31 and the insertion length L3 of the positioning pin 47 into the insertion hole 45 of the intermediate positioning section 41 do not have to be the same. Also, the insertion length L2 or L3 and the insertion length L4 of the connector pin 57 into the connector insertion hole 55 of the connecting section 51 may be the same.

[0076] The chair-type massager 10 may have two or more positioning parts. For example, the chair-type massager 10 may have only a front positioning part 21 and a rear positioning part 31. The connecting part 51 may be surrounded by multiple positioning parts 21, 31, 41 in a side view only or in a top view only. The connecting part 51 may be sandwiched on both sides by two positioning parts 21, 31, 41 in only one of the front-to-back, left-to-right, or up-and-down directions.

[0077] The compression coil spring 28 of the front positioning section 21 does not necessarily have to be attached to the outer circumference of the positioning pin 27, and may be provided at a position away from the positioning pin 27. Furthermore, the biasing member 28 is not limited to a compression coil spring, but may be of other forms such as a leaf spring. The armrest portion 12 may be provided on one side of the seat portion 13, not just both the left and right sides.

[0078] (Effects of the embodiment) (1) The chair-type massage machine 10 of the above embodiment comprises a chair body 11 including a seat 13, armrests 12 arranged on the left and right sides of the seat 13, and a first positioning part (front positioning part) 21 and a second positioning part (for example, a rear positioning part 31 or an intermediate positioning part 41) for positioning the armrests 12 relative to the chair body 11. The first positioning part 21 comprises a first positioning pin 27 provided on one of the chair body 11 and the armrest 12, and a first insertion hole 25 provided on the other of the chair body 11 and the armrest 12 into which the first positioning pin 27 is inserted. The second positioning part 31 or 41 comprises a second positioning pin 37 or 47 provided on one of the chair body 11 and the armrest 12 parallel to the first positioning pin 27, and a second insertion hole 35 or 45 provided on the other of the chair body 11 and the armrest 12 into which the second positioning pin 37 or 47 is inserted. The second insertion length L2 or L3 of the second positioning pin 37 or 47 into the second insertion hole 35 or 45 is shorter than the first insertion length L1 of the first positioning pin 27 into the first insertion hole 25.

[0079] With this configuration, when attaching the armrest 12 to the chair body 11, the armrest 12 can be positioned relative to the chair body 11 by first inserting the first positioning pin 27 into the first insertion hole 25, and then inserting the second positioning pin 37 or 47 into the second insertion hole 35 or 45. Therefore, it is not necessary to simultaneously align both the first positioning pin 27 and the second positioning pin 37 or 47 with the insertion holes 25, 35 or 45, simplifying the positioning of the armrest portion 12 relative to the chair body 11 and facilitating the process of attaching the armrest portion 12 to the chair body 11.

[0080] (2) In the above embodiment, the chair-type massage machine 10 further comprises an airbag 18 provided on the armrest portion 12 for performing massage, and a supply path (air piping) 50 for supplying air to the airbag 18. The supply path 50 has a connecting portion 51 in the middle that can be connected to disconnect the supply path 50. The connecting portion 51 comprises a connector pin 57 provided on one of the armrest portion 12 and the chair body 11 parallel to the first positioning pin 27, and a connector receiving portion 54 provided on the other of the armrest portion 12 and the chair body 11, having a connector insertion hole 55 into which the connector pin 57 can be inserted. The fourth insertion length L4 of the connector pin 57 into the connector insertion hole 55 is the same as or shorter than the second insertion length L2 or L3.

[0081] With this configuration, the connector pin 57 of the connecting portion 51 is inserted into the connector insertion hole 55 at the same time as or after inserting the second positioning pin 37 or 47 into the second insertion hole 35 or 45, following the insertion of the first positioning pin 27 into the first insertion hole 25. Therefore, the connector pin 57 can be inserted into the connector insertion hole 55 when the armrest portion 12 is fully or partially positioned on the chair body 11. As a result, the armrest portion 12, including the connection of the supply path 50, can be easily attached to the chair body 11.

[0082] (3) In the above embodiment, the first positioning portion 21 and the second positioning portion 31 or 41 are arranged with the connecting portion 51 in between in at least one of the front-rear direction, up-down direction, and left-right direction. With this configuration, the armrest portion 12 is positioned on the chair body 11 by the first positioning portion 21 and the second positioning portion 31 or 41 on both sides of the connection portion 51 in any one of the front-to-back, up-and-down, and left-to-right directions, so that the connection of the connection portion 51 in the supply path 50, that is, the connection between the connector pin 57 and the connector receiving portion 54, can be made more reliable and stable. As a result, the attachment of the armrest portion 12 to the chair body 11, including the connection of the supply path 50, can be made even easier. In addition, since the connection state of the supply path 50 at the connection portion 51 is stabilized by the first and second positioning portions 21, 31 or 41, air leakage at the connection portion 51 can be suppressed. In addition, in the chair-type massage machine 10 of this disclosure, any two of the three positioning portions 21, 31, and 41 may be arranged on either side of the connection portion in only one of the front-to-back, up-and-down, and left-to-right directions. Alternatively, any two of the three positioning parts 21, 31, and 41 may be positioned on either side of the connecting part 51 in any two of the following directions: front-to-back, up-and-down, and left-to-right. Alternatively, any two of the three positioning parts 21, 31, and 41 may be positioned on either side of the connecting part 51 in any of the following directions: front-to-back, up-and-down, and left-to-right.

[0083] (4) In the above embodiment, the chair further includes a third positioning part (for example, an intermediate positioning part 41 or a rear positioning part 31) for positioning the armrest part 12 relative to the chair body 11. The third positioning part 41 or 31 includes a third positioning pin 47 or 37 provided on one of the chair body 11 and the armrest part 12 parallel to the first positioning pin 27, and a third insertion hole 45 or 35 provided on the other of the chair body 11 and the armrest part 12 into which the third positioning pin 47 or 37 is inserted. The third insertion length L3 or L2 of the third positioning pin 47 or 37 relative to the third insertion hole 45 or 35 is shorter than the first insertion length L1.

[0084] With this configuration, when attaching the armrest 12 to the chair body 11, the first positioning pin 27 is first inserted into the first insertion hole 25, and then the second and third positioning pins 37 and 47 are inserted into the second and third insertion holes 35 and 45, thereby positioning the armrest 12 relative to the chair body 11. Therefore, it is not necessary to align the first positioning pin 27 and the second and third positioning pins 37 and 47 into the insertion holes 25, 35, and 45 simultaneously, simplifying the positioning of the armrest 12 relative to the chair body 11 and making the process of attaching the armrest 12 to the chair body 11 easier. In addition, the first to third positioning parts 21, 31, and 41 allow for more reliable and stable positioning of the armrest 12 relative to the chair body 11.

[0085] (5) In the above embodiment, the first positioning portion 21, the second positioning portion 31 or 41, and the third positioning portion 41 or 31 are arranged to surround the connecting portion 51 in a side view or a top view. With this configuration, the armrest portion 12 is positioned on the chair body 11 by the three positioning portions 21, 31, and 41 around the connection portion 51, so that the connection of the connection portion 51 in the supply path 50, that is, the connection between the connector pin 57 and the connector receiving portion 54, can be made more reliable and stable. As a result, the attachment of the armrest portion 12 to the chair body 11, including the connection of the supply path 50, can be made even easier. In addition, since the connection state of the supply path 50 at the connection portion 51 is stabilized by the first to third positioning portions 21, 31, and 41, air leakage at the connection portion 51 can be suppressed.

[0086] (6) In the above embodiment, the first positioning unit 21 includes a biasing member (compression coil spring 28) that biases the first positioning pin 27 in the direction of disengaging from the first insertion hole 25 before the first positioning pin 27 is inserted into the first insertion hole 25 and the second positioning pin 37 or 47 is inserted into the second insertion hole 35 or 45. With this configuration, the biasing member 28 elastically supports the armrest portion 12, making it easier to align the second positioning pin 37 or 47 with the second insertion hole 35 or 45, and preventing the second positioning pin 37 or 47 from being forcefully inserted into the second insertion hole 35 or 45 due to the load of the armrest portion 12.

[0087] (7) In the above embodiment, the biasing member 28 is a compression coil spring attached to the outer circumference of the first positioning pin 27. This configuration allows the biasing force of the compression coil spring 28 to act directly on the first positioning pin 27.

[0088] Although embodiments have been described above, it should be understood that various modifications to the form and details are possible without departing from the spirit and scope of the claims. [Explanation of Symbols]

[0089] 10: Chair-type massage machine 11: Chair body 12: Armrest 13: Seat part 18: Airbag (therapeutic device) 19: Pump 21: Front positioning section (first positioning section) 25: Insertion hole (first insertion hole) 27: Positioning pin (first positioning pin) 28: Compression coil spring (biasing member) 31: Rear positioning section (second and third positioning sections) 35: Insertion holes (second and third insertion holes) 37: Positioning pin (second or third positioning pin) 41: Intermediate positioning section (second or third positioning section) 45: Insertion hole (second or third insertion hole) 47: Positioning pin (second or third positioning pin) 50: Air piping (supply route) 51: Connection part 54: Connector receptacle 55: Connector insertion hole 57: Connector pins

Claims

1. The chair body, including the seat, Armrests are positioned on the left and right sides of the aforementioned seat, A first positioning unit and a second positioning unit for positioning the armrest portion relative to the chair body, The aforementioned airbag provided in the armrest and which performs massage, It includes a supply path for supplying air to the airbag, The supply path has a connecting section in the middle that allows the supply path to be disconnected and reconnected. A chair-type massage machine in which the first positioning unit and the second positioning unit are arranged with the connecting unit in between in at least one of the front-to-back direction, up-and-down direction, and left-to-right direction.

2. The first positioning unit is The chair comprises a first positioning pin provided on one of the chair body and the armrest, and a first insertion hole provided on the other of the chair body and the armrest into which the first positioning pin is inserted. The second positioning unit is The chair comprises a second positioning pin provided parallel to the first positioning pin on one of the chair body and the armrest, and a second insertion hole provided on the other of the chair body and the armrest into which the second positioning pin is inserted. The chair-type massage machine according to claim 1, wherein the connecting portion comprises a connector pin provided parallel to the first positioning pin on one of the armrest portion and the chair body, and a connector receiving portion provided on the other of the armrest portion and the chair body, having a connector insertion hole into which the connector pin can be inserted.

3. The chair body, including the seat, Armrests are positioned on the left and right sides of the aforementioned seat, A first positioning unit, a second positioning unit, and a third positioning unit for positioning the armrest portion relative to the chair body, The aforementioned airbag provided in the armrest and which performs massage, It includes a supply path for supplying air to the airbag, The supply path has a connecting section in the middle that allows the supply path to be disconnected and reconnected. A chair-type massage machine in which the first positioning section, the second positioning section, and the third positioning section are arranged to surround the connecting section in a side view or a top view.

4. The first positioning unit is The chair comprises a first positioning pin provided on one of the chair body and the armrest, and a first insertion hole provided on the other of the chair body and the armrest into which the first positioning pin is inserted. The second positioning unit is The chair comprises a second positioning pin provided parallel to the first positioning pin on one of the chair body and the armrest, and a second insertion hole provided on the other of the chair body and the armrest into which the second positioning pin is inserted. The third positioning unit is The chair comprises a third positioning pin provided parallel to the first positioning pin on one of the chair body and the armrest, and a third insertion hole provided on the other of the chair body and the armrest into which the third positioning pin is inserted. The chair-type massage machine according to claim 3, wherein the connecting portion comprises a connector pin provided on one of the armrest portion and the chair body parallel to the first positioning pin, and a connector receiving portion provided on the other of the armrest portion and the chair body, having a connector insertion hole into which the connector pin can be inserted.

5. The chair-type massage machine according to claim 2, wherein the second insertion length of the second positioning pin into the second insertion hole is shorter than the first insertion length of the first positioning pin into the first insertion hole.

6. The chair-type massage machine according to claim 4, wherein the second insertion length of the second positioning pin into the second insertion hole and the third insertion length of the third positioning pin into the third insertion hole are shorter than the first insertion length of the first positioning pin into the first insertion hole.

7. The chair-type massage machine according to claim 5 or 6, wherein the fourth insertion length of the connector pin into the connector insertion hole is the same as or shorter than the second insertion length.

8. The chair body, including the seat, Armrests are positioned on the left and right sides of the aforementioned seat, It comprises a first positioning unit and a second positioning unit for positioning the armrest portion relative to the chair body, The first positioning unit is The chair comprises a first positioning pin provided on one of the chair body and the armrest, and a first insertion hole provided on the other of the chair body and the armrest into which the first positioning pin is inserted. The second positioning unit is The chair comprises a second positioning pin provided parallel to the first positioning pin on one of the chair body and the armrest, and a second insertion hole provided on the other of the chair body and the armrest into which the second positioning pin is inserted. A chair-type massage machine in which the second insertion length of the second positioning pin into the second insertion hole is shorter than the first insertion length of the first positioning pin into the first insertion hole.

9. The system further comprises an airbag provided in the armrest for massage, and a supply path for supplying air to the airbag, The supply path has a connecting section in the middle that allows the supply path to be disconnected and reconnected. The connecting portion comprises a connector pin provided parallel to the first positioning pin on one of the armrest portion and the chair body, and a connector receiving portion provided on the other of the armrest portion and the chair body, having a connector insertion hole into which the connector pin can be inserted. The chair-type massage machine according to claim 8, wherein the fourth insertion length of the connector pin into the connector insertion hole is the same as or shorter than the second insertion length.

10. The chair further comprises a third positioning unit for positioning the armrest relative to the chair body, The third positioning unit is The chair comprises a third positioning pin provided parallel to the first positioning pin on one of the chair body and the armrest, and a third insertion hole provided on the other of the chair body and the armrest into which the third positioning pin is inserted. The chair-type massage machine according to claim 8 or 9, wherein the third insertion length of the third positioning pin into the third insertion hole is shorter than the first insertion length.

11. The chair-type massage machine according to any one of claims 2, 4 to 6, 8, and 9, wherein the first positioning portion includes a biasing member that biases the first positioning pin in a direction toward disengaging from the first insertion hole when the first positioning pin is inserted into the first insertion hole and the second positioning pin is not yet inserted into the second insertion hole.

12. The chair-type massage machine according to claim 11, wherein the biasing member is a compression coil spring attached to the outer circumference of the first positioning pin.

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