Back cover body of massage machine

Abstract

Provided is a back cover for a massage machine, the back cover having a function of being capable of switching to a structure in a posture in which the chest is prevented from bending when a user leans on the backrest, thereby enabling the user to receive massage on the back in a relaxed posture. The back cover body (2) of the massage machine is arranged on the massage machine (1), the massage machine (1) is provided with a backrest part (12), a back massage mechanism (13) for massaging a treated part of a user by using a treatment piece is arranged in the backrest part (12), the back cover body (2) covers the front surface of the backrest part (12), and the back cover body (2) is a long sheet body. The pillow body (3) can be deformed at the upper part of the backrest part (12) by being rolled up, and can be arranged at a position adjacent to the treatment piece (15).

Description

Technical Field

[0001] The present invention relates to a back cover that can be provided on the front surface of the backrest of a massage machine. This application claims priority based on Japanese Application No. 2024-008143 filed on January 23, 2024, and incorporates by reference the entire content described in the above Japanese application. Background Art

[0002] In conventional chair-type massage machines, some chair-type massage machines have a back cover that is arranged in a hanging manner on the front surface of the backrest. For example, Patent Document 1 discloses a chair-type massage machine in which the back cover hangs down and covers the backrest. This back cover is used, for example, to protect the back when feeling strong pressing or the like of a back massage mechanism built in the backrest.

[0003] Patent Document 1: Japanese Unexamined Patent Application Publication No. 2023-083566 ( Figure 1 )

[0004] As described above, when feeling strong pressing or the like of the back massage mechanism, hanging the back cover down to the front surface of the backrest has an effect of sufficiently protecting the back.

[0005] On the other hand, when the treatment member of the back massage mechanism moves downward from the upper side to the user's shoulder, sometimes the shoulder is pressed by the treatment member and the chest moves forward, and the head remains behind, resulting in an "uncomfortable posture" with the chest bent. If such a posture occurs, the user cannot receive effective massage. This situation cannot be improved by using the above-mentioned back cover.

[0006] To avoid this situation, in Patent Document 1, a pillow body on which the head can be placed is provided at the upper part of the backrest. By placing the head on the pillow body, the user can lean on the backrest and relaxingly receive the massage of the back massage mechanism on the back.

[0007] However, if a back cover and a pillow body having the above effects are provided, the number of components increases, that is, the cost increases. In addition, when not using any one or all of the back cover and the pillow body, it is difficult to find a place to store them. Summary of the Invention

[0008] Therefore, in view of the above problems, an object of the present invention is to provide a back cover for a massage machine that has a function of avoiding an unnatural posture such as chest bending when massaging a user and enables the user to receive the massage in a relaxed posture.

[0009] To achieve the above object, the present invention adopts the following technical means.

[0010] The back cover of the massage machine of the present invention, the back cover is provided on the massage machine, the massage machine has a backrest, and a back massage mechanism for massaging a treatment part of a user with a treatment member is built in the backrest, the back cover covers the front surface of the backrest, and is characterized in that the back cover is a strip-shaped sheet body, and can be deformed into a pillow body at the upper part of the backrest by rolling up, and can be arranged at a position adjacent to the treatment member.

[0011] Preferably, the pillow body can be arranged on the upper side of the treatment member and has a size that protrudes more forward than the treatment member, or the pillow body can be arranged to overlap with the front side of the treatment member.

[0012] Preferably, an elastic cushioning material can be accommodated inside the back cover. When the back cover is rolled up and deformed into the wound pillow body, the wound pillow body can have a number of winding turns and / or thickness capable of supporting the back side of the user.

[0013] Preferably, the back cover of the massage machine can be configured such that one surface of the back cover has a first engaging portion and the other surface has a second engaging portion. After the back cover is rolled up into a wound shape, by engaging the first engaging portion with the second engaging portion, it is possible to prevent the wound state of the back cover from loosening and / or position the back cover.

[0014] Preferably, the back cover of the massage machine can be configured such that the back cover has a first engaging portion and the backrest has a third engaging portion. After the back cover is rolled up into a wound shape, by engaging the first engaging portion with the third engaging portion, it is possible to prevent the wound state of the back cover from loosening and / or position the back cover.

[0015] Preferably, the first engaging portion can be a winding fixing band.

[0016] Preferably, the back massage mechanism can have a pair of left and right treatment members for massaging a treatment part of a user, and the winding fixing band can be provided at a middle part in the length direction of the back cover and between the pair of left and right treatment members or on the left and right outer sides of the pair of left and right treatment members.

[0017] Preferably, the length of the winding fixing band can be such that when the back cover is rolled up into the pillow body, the top end of the winding fixing band can reach the backrest and engage with it.

[0018] Effects of the Invention

[0019] The back cover of the massage machine according to the present invention can avoid the unnatural postures of the user and enable the user to receive back massage in a relaxed state by using this back cover. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic perspective view showing when the back cover of the embodiment is set on the massage machine and used as a pillow.

[0021] Figure 2 It is a schematic perspective view showing when used as a back cover.

[0022] Figure 3 It is an enlarged perspective view when switching from the back cover to the pillow for use.

[0023] Figure 4 It is a top view showing the front and back of the back cover.

[0024] Description of reference numerals:

[0025] 1 Massage machine

[0026] 2 Back cover

[0027] 3 Pillow

[0028] 4 Winding fixing belt

[0029] 5 Belt engaging portion

[0030] 6 Back engaging portion

[0031] 7 Upper engaging portion

[0032] 8 Zipper

[0033] 11 Chair

[0034] 12 Backrest

[0035] 13 Back massage mechanism

[0036] 15 Treatment member

[0037] 17 Arm member DETAILED DESCRIPTION OF THE INVENTION

[0038] Hereinafter, an embodiment of the back cover of the massage machine of the present invention will be described with reference to the drawings.

[0039] In the embodiment described below, a plate - type massage machine 1 is taken as an example of the massage machine for description. In addition, the embodiment described below is an example of embodying the present invention, and the structure of the present invention is not limited by this specific example. Further, regarding the drawings, for easy observation, some constituent parts are omitted, or drawn using imaginary lines, etc.

[0040] In addition, directions such as the front-back and left-right directions of the massage machine 1 are as follows Figures 1 to 4 shown. These directions are the same as the directions observed by a user sitting on the chair 11 provided with the massage machine 1. In the following description, the Figures 1 to 4 directions shown are set as the directions for explaining the back cover 2 of the present embodiment of the massage machine 1

[0041] First, the massage machine 1 having a plate shape with the back cover 2 of the present embodiment will be described

[0042] As Figure 1 、 Figure 2 shown, the massage machine 1 of the present embodiment is elongated in the up-down direction and is provided to lean against the backrest of an ordinary chair 11 used in a living room or the like to massage the back of a user sitting on the chair 11

[0043] The massage machine 1 has a plate-shaped housing elongated in the up-down direction. This housing is the backrest 12 arranged along the back (treatment part) of the user. A space elongated in the up-down direction is provided inside the backrest 12 (housing), and a back massage mechanism 13 for massaging the back of the user is accommodated. A seat part 14 is provided at the lower part of the backrest 12

[0044] An opening elongated in the up-down direction is provided on the front surface of the backrest 12 (housing). The treatment member 15 of the back massage mechanism 13 protrudes forward from this opening. The opening is covered without gaps by a covering cloth 16 or the like so that the treatment member 15 of the back massage mechanism 13 does not directly contact the back (neck-shoulder-waist) of the user. In addition, the covering cloth 16 can also cover the entire backrest 12 (massage machine 1)

[0045] As Figure 1 、 Figure 2 shown, the back massage mechanism 13 of the present embodiment has: a treatment member 15 for kneading and massaging the treatment part (neck-shoulder-waist); an arm member 17 having the treatment member 15; a rotary drive shaft (not shown) passing through the proximal end side of the arm member 17; a drive part (not shown) for rotationally driving the rotary drive shaft; a conversion part (not shown) provided at the proximal end of the arm member 17 and converting the rotational driving force of the rotary drive shaft into a kneading massage action

[0046] In addition, a pair of waist air bags 18 are arranged on the left and right sides of the lower part of the backrest 12, and the waist air bags 18 massage the waist of the user. A pair of leg air bags 19 are arranged on the left and right sides of the seat part 14, and the leg air bags 19 massage the legs of the user

[0047] The arm members 17 are provided as a pair, one on the left and one on the right. The arm members 17 protrude forward (towards the user's back side) from the backrest 12 that constitutes the massage machine 1. The arm members 17 in the present embodiment are configured such that the tips protrude in two directions, diagonally forward and upward and diagonally forward and downward, and have a curved shape.

[0048] Therapeutic members 15 formed in a spherical or wheel shape are provided at the upper tip and the lower tip of the branched arm members 17, respectively. The midpoint in the longitudinal direction of the arm member 17 is used as the base end. A conversion unit for converting to a kneading massage action is provided at the base end of the arm member 17.

[0049] In the back massage mechanism 13, if the pair of left and right arm members 17 are moved closer to or away from each other, the left and right therapeutic members 15 also move closer to or away from each other in the left - right direction. By repeating this action, a kneading massage is performed on the treatment part. In addition, the back massage mechanism 13 can be moved in the up - down direction by the movement drive unit 20.

[0050] As Figure 2 、 Figure 4 shown, the back cover 2 in the present embodiment is a long cloth body (in other words, a strip - shaped sheet body) of the massage machine 1. The massage machine 1 has a back massage mechanism 13 and a backrest 12. The back massage mechanism 13 has a pair of left and right therapeutic members 15, and the backrest 12 houses the back massage mechanism 13 inside.

[0051] The back cover 2 houses an elastic buffer member and the like inside. In order to adjust the intensity of the kneading massage of the therapeutic member 15 (kneading ball 15) on the treatment part, the back cover 2 is provided to hang down on the front surface of the backrest 12 of the massage machine 1, covering the therapeutic member 15.

[0052] The back cover 2 is used to make the contact (pressing) of the therapeutic member 15 during massage softer (weaker) by hanging down along the front surface of the backrest 12 of the massage machine 1 when the user feels that the pressing of the therapeutic member 15 is strong.

[0053] The width of the back cover 2 can be equal to the width of the backrest 12 of the massage machine 1, or narrower than the width of the backrest 12. The width of the back cover 2 can be at least wider than the left - right interval between the pair of therapeutic members 15 arranged. For example, the width of the back cover 2 in the present embodiment is about 30 cm.

[0054] The length of the back cover 2 can be equal to the length of the backrest 12 of the massage machine 1, or slightly shorter than the length of the backrest 12. For example, the length of the back cover 2 in the present embodiment is about 80 cm.

[0055] It should be noted that although in this embodiment, the structure of the back cover 2 exemplifies the above-mentioned shape and size, as long as it is a structure capable of covering the front surface of the backrest 12, it is not limited to the exemplified structure.

[0056] One side of the zipper 8 is provided at the upper end of the back cover 2. In addition, the other side of the zipper 8 is provided at the upper part of the massage machine 1 (backrest 12).

[0057] By engaging one side of the zipper 8 with the other side, the back cover 2 is installed in a hanging state on the front surface of the massage machine 1 (backrest 12). In addition, the back cover 2 can also be set in a fixed state by sewing the upper end of the back cover 2 to the upper end of the backrest 12 or the like.

[0058] As Figure 1 、 Figure 3 shown, the back cover 2 of this embodiment is characterized in that it can be set so that by rolling up the above-mentioned cloth body, it can be deformed (switched) into a pillow body 3 capable of placing the head on the upper part of the backrest 12 of the massage machine 1. In addition, the inner surface (back surface) of the back cover 2 becomes the surface of the pillow body 3 when rolled up.

[0059] A buffer material is accommodated inside the back cover 2. When the user feels that the pressing of the treatment member 15 of the back massage mechanism 13 built in the backrest 12 is strong, the buffer material in the back cover 2 alleviates the pressing to protect the back. In addition, when deformed (switched) into the pillow body 3, the buffer material in the back cover 2 supports and protects the head and neck, for example.

[0060] The lower part (the part that becomes the pillow body 3) on the surface side of the back cover 2 that has accommodated the buffer material can be sewn in a manner divided into a plurality of parts. For example, in this embodiment, as Figure 2 shown, a buffer material is accommodated inside the back cover 2, and from the middle part to the lower part in the length direction on the surface side of the back cover 2, it is sewn (sewing part 2a) in a longitudinally long diamond grid pattern at a prescribed interval.

[0061] That is, the back cover 2 of this embodiment accommodates the buffer material in a plurality of spaces divided into a grid pattern. In addition, for example, the surface side (sewing part 2a) of the back cover 2 can also be sewn into a horizontal decorative pattern at a prescribed interval.

[0062] Thus, by sewing (providing a sewing part 2a) that divides the middle part to the lower part (the position of the pillow body 3) in the length direction of the back cover body 2, when the back cover body 2 is rolled up, the cloth body on the inner surface side is not likely to form wrinkles and can be rolled up smoothly and with a good shape. In addition, when the back cover body 2 is hung down on the front surface against the backrest 12, the sewing (sewing part 2a) of the back cover body 2 becomes a kind of design, improving the aesthetic feeling of the appearance.

[0063] As Figure 1 , Figure 3 shown, the size of the pillow body 3 is set to protrude more forward than the treatment member 15 (kneading ball 15) at a position adjacent to the treatment member 13 of the back massage mechanism 13, and the pillow body 3 is configured to be able to elastically support the treatment part (shoulder) and the upper side (neck - head) of the treatment part. The pillow body 3 has a height that protrudes more forward than the position of the treatment member 15 that protrudes forward.

[0064] The pillow body 3 is configured to be able to be arranged above the treatment member 15 by rolling up the back cover body 2. The pillow body 3 is configured to be able to support the head and the neck as the treatment part by rolling up the back cover body 2 with buffering properties. By rolling up the back cover body 2 and arranging the pillow body 3 above the treatment member 15, the position of the treatment member 15 relative to the neck (treatment part) can be adjusted.

[0065] When the back cover body 2 is deformed (switched) into the pillow body 3, the pillow body 3 is configured to be able to support the head and the neck to protect the winding turns and thickness of the head and the neck.

[0066] The width of the pillow body 3 can be at least wider than the width of the head of an average user. The width of the pillow body 3 in this embodiment is about 30 cm. The pillow body 3 has a height that protrudes more forward than the position of the treatment member 15 that protrudes forward. The pillow body 3 can be the length of the part where the neck to the head can be placed. The height of the pillow body 3 (outer diameter when the back cover body 2 is wound) can be, for example, about 15 - 20 cm.

[0067] The height of the pillow body 3 is determined by the number of winding turns when the back cover body 2 is wound into the pillow body 3, the thickness of the cover body 2, the length of the back cover body 2, etc. In addition, the length of the back cover body 2 can match the length of the backrest 12 (massage machine 1).

[0068] For example, the length of the back cover body 2 is set to be able to be wound about three to five turns when deformed into the pillow body 3. In this embodiment, the length of the back cover body 2 is about 80 cm. In addition, the thickness of the cover body 2 is, for example, about 5 - 10 mm (including the thickness of the buffer material). In this embodiment, the thickness of the back cover body 2 is about 5 mm. In this case, the height of the pillow body 3 (outer diameter when the back cover body 2 is wound) is about 15 cm.

[0069] It should be noted that in this embodiment, although the shape, size, etc. of the pillow body 3 are illustrated as above, as long as it is a structure that can support the part from the neck to the shoulders, it is not limited to the illustrated structure. As a method of rolling up the back cover 2, as Figure 1 shown, it can be wound upward with the lower end of the back cover 2 folded toward the front side of the back cover 2. In contrast, it can also be wound upward with the lower end of the back cover 2 folded toward the inner side of the back cover 2.

[0070] According to the back cover 2 of this embodiment provided on the front surface of the backrest 12 of the massage machine 1, by switching the back cover 2 to the pillow body 3, for example, the pillow body 3 supports the user's head. Therefore, it is possible to prevent the following situation: when the treatment member 15 of the back massage mechanism 13 descends from the upper side and moves to the user's shoulder during massage, the shoulder is pressed by the treatment member 15 and the chest moves forward, and the user's head remains in the rear position, and the chest bends and becomes an uncomfortable posture.

[0071] In this way, by rolling up the back cover 2 and switching to the pillow body 3, the user can receive effective massage in a proper posture.

[0072] By rolling up the back cover 2, the pillow body 3 can be arranged so as to overlap with the front weight of the treatment member 15. The pillow body 3 is configured to support the shoulder as the treatment part by rolling up the back cover 2 having cushioning properties.

[0073] As Figure 1 shown by the imaginary line (double-dot dash line), if the back massage mechanism 13 is moved upward and the treatment member 15 is stopped near the shoulder, and the pillow body 3 is arranged so as to overlap (cover) the front weight of the treatment member 15, the shoulder can be supported in the non-massage state.

[0074] Since the treatment member 15 becomes a state that protrudes more forward than the opening of the backrest 12 (housing), by arranging the pillow body 3 to cover the treatment member 15, the pillow body 3 becomes a buffer member that avoids the protruding state of the treatment member 15 in the non-massage state. That is, when not performing massage, by covering the treatment member 15 with the pillow body 3, the treatment part (shoulder) can be protected. In this way, the vertical position of the pillow body 3 can also be arbitrarily changed.

[0075] As Figure 4 shown, a pair of left and right winding fixing bands 4 (first engaging portions) are provided on the inner side of the back cover 2, and the pair of winding fixing bands 4 are used to roll up the back cover 2 and engage with the upper part of the backrest 12 of the massage machine 1. The winding fixing bands 4 are provided at the middle part in the length direction of the back cover 2, and are provided between the pair of left and right treatment members 15 or outside the pair of left and right treatment members 15.

[0076] The length of the winding and fixing belt 4 in this embodiment is about 15 cm, and the width is about 2 cm. The winding and fixing belts 4 are respectively installed on the left and right edges of the middle part in the length direction of the back cover 2. Regarding the sewing and fixing position of the winding and fixing belt 4, in this embodiment, the base end of the winding and fixing belt 4 is sewn to the back cover 2 below about 35 cm from the upper part of the back cover 2.

[0077] In the case of the back cover 2, the winding and fixing belt 4 is located on the inner side of the back cover 2. When the back cover 2 is rolled up to become the pillow body 3, the winding and fixing belt 4 is located on the outer side of the pillow body 3. The length of the winding and fixing belt 4 enables its top end to reach the backrest 12 and engage with it.

[0078] In addition, by arranging the installation position of the winding and fixing belt 4 on the inner side of the back cover 2 as described above, the wound back cover 2 can be reliably fixed to become the pillow body 3.

[0079] In addition, in this embodiment, the following structure is illustrated: the winding and fixing belt 4 is arranged in the up-and-down direction (in the direction along the length of the back cover 2), and the winding and fixing belt 4 is engaged with the upper back surface of the backrest 12 to hold the left and right ends of the pillow body 3. However, regarding the installation methods such as the length, number, and sewing position of the winding and fixing belt 4, as long as it can hold the structure of the pillow body 3, it is not limited to the illustrated structure.

[0080] For example, it can also be configured that the winding and fixing belt 4 is arranged in the left-and-right direction (in the direction intersecting (orthogonal) with the length direction of the back cover 2), and the winding and fixing belt 4 is engaged with the upper side surface of the backrest 12 to hold the left and right ends of the pillow body 3.

[0081] A belt engaging portion 5 (buckle 5) is provided at the top end of the winding and fixing belt 4. A back engaging portion 6 (buckle 6) capable of engaging with the belt engaging portion 5 is provided on the inside (back surface) of the back cover 2. When used as the back cover 2, the back engaging portion 6 (buckle 6) is a member for preventing contact with the treatment member 15 and restricting the winding and fixing belt 4.

[0082] If the back cover 2 is rolled up (rolled upward with the lower end of the back cover 2 folded toward the front side of the back cover 2), the inside of the back cover 2 becomes the surface of the pillow body 3, and the winding and fixing belt 4 appears. By engaging the belt engaging portion 5 of the winding and fixing belt 4 with the upper engaging portion 7 (buckle 7) provided on the upper back surface of the massage machine 1 (backrest 12), the pillow body 3 can be held on the upper part of the massage machine 1 (backrest 12).

[0083] A plurality of belt engaging portions 5 (buckles 5) may be provided on the winding fixing belt 4. For example, the belt engaging portions 5 may be provided at the top end and the middle portion in the longitudinal direction of the winding fixing belt 4. By providing a plurality of belt engaging portions 5, the height (vertical position) of the pillow body 3 in the vertical direction can be changed.

[0084] In addition, although in the present embodiment, the engaging portion 5, the back engaging portion 6, and the upper engaging portion 7 are buckles, as long as they are members capable of engaging with the winding fixing belt 4 (for example, hook-and-loop fasteners, etc.), they are not limited to the illustrated members.

[0085] By using the winding fixing belt 4, the belt engaging portion 5, the upper engaging portion 7, etc., the pillow body 3 formed by deforming and winding the back cover 2 can be reliably fixed to the upper part of the backrest 12.

[0086] If the above-mentioned winding fixing belt 4, belt engaging portion 5, back engaging portion 6, etc. are considered as engaging portions for fixing in the state where the back cover 2 is wound, then regarding the engaging portions provided on the back cover 2, a first engaging portion is provided on one surface (for example, the front surface) of the back cover 2, and a second engaging portion is provided on the other surface (the inner surface).

[0087] If it is this structure, after the back cover 2 is wound into a wound shape, by engaging the first engaging portion and the second engaging portion, the wound state of the back cover 2 can be prevented from loosening, and the positioning of the back cover 2 can be carried out together.

[0088] For example, when winding upward in a state where the lower end of the back cover 2 is folded toward the inner side of the back cover 2 and the second engaging portion (for example, a buckle) is engaged with the first engaging portion (for example, a buckle), this engaging portion becomes the inner side of the back cover 2, that is, the rear side of the pillow body 3, and the aesthetics is good.

[0089] Alternatively, a first engaging portion such as the winding fixing belt 4 may be provided on the other surface of the back cover 2, and a third engaging portion such as the back engaging portion 6 may be provided at the upper end of the backrest 12, and the first engaging portion and the third engaging portion are engaged after the back cover 2 is wound.

[0090] As the engaging portion, as described above, various forms of members such as buckles, hook-and-loop fasteners, and belts can be adopted.

[0091] As described above, according to the back cover 2 of the present embodiment provided in the massage machine 1, when the user leans on the backrest 12, the pillow body 3 supports the back side of the user (for example, the user's head, neck, and shoulders), and can prevent the user's chest from bending in such a posture, so that the user can receive back massage in a relaxed posture.

[0092] In addition, this embodiment can also be understood as providing a pillow body 3 formed by winding a cloth body, allowing the cloth body to hang down on the front surface of the backrest 12, and being able to be switched into a back cover 2 that covers the front surface of the backrest 12.

[0093] Furthermore, the embodiments disclosed herein should be considered illustrative in all respects and not restrictive. In particular, in the embodiments disclosed herein, matters not explicitly stated, such as operating conditions, operation conditions, dimensions and weights of components, etc., do not depart from the scope generally implemented by those skilled in the art, and matters that can be easily conceived by those skilled in the art are adopted.

[0094] For example, in view of the treatment range, the length of the arm member 17 of the back massage mechanism 13, the inclination angle of the arm member 17 relative to the rotation drive shaft, the separation distance between the left and right arm members 17, etc. can be appropriately changed. In addition, regarding the form and engagement method of the winding fixing band 4, various methods can be adopted.

Claims

1. A back cover of a massage machine, the back cover being provided on the massage machine, the massage machine having a backrest, and a back massage mechanism for massaging a treatment part of a user by using a treatment member being built in the backrest, the back cover covering a front surface of the backrest, wherein, the back cover is a strip-shaped sheet body and can be deformed into a pillow body at an upper part of the backrest by being rolled up, and can be disposed at a position adjacent to the treatment member.

2. The back cover of the massage machine according to claim 1, wherein, the pillow body is disposed above the treatment member and has a size that protrudes more forward than the treatment member, or the pillow body is disposed so as to overlap with the front side of the treatment member.

3. The back cover of the massage machine according to claim 2, wherein, an elastic cushioning material is accommodated inside the back cover, when the back cover is rolled up to be deformed into the wound pillow body, the wound pillow body has a number of winding turns and / or a thickness capable of supporting the back side of the user.

4. The back cover of the massage machine according to any one of claims 1 to 3, wherein, the back cover of the massage machine is configured such that one surface of the back cover has a first engaging portion and the other surface has a second engaging portion, and after the back cover is rolled up into a wound shape, by engaging the first engaging portion with the second engaging portion, it is possible to prevent the wound state of the back cover from becoming loose and / or position the back cover.

5. The back cover of the massage machine according to any one of claims 1 to 3, wherein, the back cover of the massage machine is configured such that the back cover has a first engaging portion and the backrest has a third engaging portion, and after the back cover is rolled up into a wound shape, by engaging the first engaging portion with the third engaging portion, it is possible to prevent the wound state of the back cover from becoming loose and / or position the back cover.

6. The back cover of the massage machine according to claim 4, wherein, the first engaging portion is a winding fixing band.

7. The back cover of the massage machine according to claim 6, wherein, the back massage mechanism has a pair of left and right treatment members for massaging a treatment part of a user, the winding fixing band is provided at a middle part in the length direction of the back cover and is provided between the pair of left and right treatment members or on the left and right outer sides of the pair of left and right treatment members.

8. The back cover of the massage machine according to claim 6, wherein, the length of the winding fixing band is such that when the back cover is rolled up to become the pillow body, the tip of the winding fixing band can reach the backrest and engage with it.

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