Heated ball for massage device

The heating ball for massage devices uses a cartridge heater member and bearing to simplify assembly and reduce costs, addressing the complexity and cost issues of conventional designs.

WO2026089248A1PCT designated stage Publication Date: 2026-04-30CERAGEM CO LTD
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Patent Information

Authority / Receiving Office
WO · WO
Patent Type
Applications
Current Assignee / Owner
CERAGEM CO LTD
Filing Date
2025-08-22
Publication Date
2026-04-30

AI Technical Summary

Technical Problem

Conventional heating balls for thermal massage devices require various machined parts to connect the PTC heater, increasing manufacturing costs and complicating assembly.

Method used

A heating ball design using an easy-to-assemble cartridge heater member and a bearing to rotate the fastening member and cover member, minimizing machined parts and using a snap ring for fixation.

Benefits of technology

The design allows for easy assembly, reduced manufacturing costs, and effective connection of components while maintaining functionality for thermal massage applications.

✦ Generated by Eureka AI based on patent content.

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Abstract

A heated ball for a massage device, according to the present invention, comprises: a fastening member which comprises a cylindrical coupling part having an inner space therein, and a pressing part protruding outward from along the circumferential direction of the coupling part; a cover member which is coupled to the outside of the fastening member; and a cartridge heater member which is inserted into the inner space of the coupling part.
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Description

Heated ball for massage device

[0001] The present invention relates to a heating ball for a massage device, and more specifically, to a heating ball for a massage device that can be easily assembled while reducing manufacturing costs by using an easy-to-assemble cartridge heater member and rotating the fastening member and the cover member through a bearing.

[0002] Thermal massage devices are designed to alleviate acute or chronic pain occurring in the muscle and nerve tissues of the spine, and various types of spinal thermal massage devices are being developed recently.

[0003] The thermal massage device can move along parts of the body to improve blood circulation or relieve momentary muscle stiffness. Additionally, the heat generated by the thermal massage device can apply thermal stimulation to the painful area, thereby improving blood flow to the painful area and alleviating pain.

[0004] A thermal massage device is equipped with a heating ball capable of generating heat to apply thermal stimulation while applying pressure to the user. A PTC heater that heats up when an electric current is applied may be provided in the center of the heating ball. However, conventional heating balls equipped with such a PTC heater have the following problems.

[0005] A heating ball used in a thermal massage device may include a heater that generates heat, a connecting member rotatably coupled to the heater, and a rubber ball coupled to the outside of the connecting member and in contact with the user. The heating ball used in the thermal massage device transfers the heat generated by the heater to the connecting member and the rubber ball to apply thermal stimulation to the user.

[0006] However, conventional heating balls have a problem in that they require various machined parts to rotatably connect the connecting member to the heater while transferring heat from the heater to the connecting member.

[0007] Specifically, various machined parts such as bolts and heat transfer pins were required to firmly fix the PTC heater inside the fastening member while effectively transferring the heat generated from the PTC heater to the fastening member and the rubber ball, and separate machined parts were required to rotatably connect the fastening member and the rubber ball to the heater.

[0008] As such, the use of various machined parts leads to a problem where the manufacturing cost of the heating balls used in thermal massage devices increases. In addition, since the heating balls used in thermal massage devices contain various machined parts, there is a problem where the assembly of the heating balls is not easy.

[0009] The present invention aims to solve the aforementioned problems, and more specifically, relates to a heating ball for a massage device that can be easily assembled while reducing manufacturing costs by using an easy-to-assemble cartridge heater member and rotating the fastening member and cover member through a bearing.

[0010] A heating ball for a massage device according to one embodiment is a heating ball for a massage device used in a massage device, characterized by comprising: a fastening member including a coupling part formed in a tubular shape with an internal space and a pressure part protruding outwardly along the circumferential direction of the coupling part; a cover member coupled to the outside of the fastening member; and a cartridge heater member inserted into the internal space of the coupling part.

[0011] The cartridge heater member of the heating ball for a massage device according to one embodiment may include a shaft having an internal space and a cylindrical shape, and a heater inserted into the shaft to generate heat.

[0012] The shaft of the heating ball for a massage device according to one embodiment is inserted into the internal space of the coupling part, and a bearing may be inserted between the outer side of the shaft and the inner side of the internal space of the coupling part.

[0013] The internal space of the coupling portion of the heating ball for a massage device according to one embodiment includes a first space and a second space provided at one or more of one side and the other side of the first space and having a width wider than the width of the first space, and a seating ledge is provided between the first space and the second space, and the bearing can be seated on the seating ledge.

[0014] A heating ball for a massage device according to one embodiment may include a module bracket coupled to the other side of the shaft and a bushing inserted into the other side of the shaft and disposed between the other side of the fastening member and the module bracket.

[0015] The pressing portion of the fastening member of the heating ball for a massage device according to one embodiment includes a plurality of pressing ribs protruding outward along the circumferential direction of the coupling portion, and a spaced-apart space may be formed between the plurality of pressing ribs.

[0016] The pressure rib of the heating ball for a massage device according to one embodiment may include a support that is connected to the coupling part and extends from one side of the coupling part to the other side, and a projection provided at the end of the support that extends from one side of the coupling part to the other side while forming an arc shape or a circular cross-section.

[0017] In the cover member of the heating ball for a massage device according to one embodiment, a through hole is provided that extends from one side of the cover member toward the other side, and a plurality of through holes may be provided along the circumferential direction of the cover member.

[0018] The pressure portion of the fastening member of the heating ball for a massage device according to one embodiment includes a plurality of pressure ribs protruding outwardly along the circumferential direction of the coupling portion, and a spaced-apart space is formed between the plurality of pressure ribs, and when the cover member is coupled to the fastening member, the through hole may be positioned between one of the pressure ribs and another of the pressure ribs.

[0019] In the inner side of the cover member of the heating ball for a massage device according to one embodiment, a plurality of support members are provided that protrude inward along the circumferential direction of the cover member, and the support members can be inserted into a spaced-apart space formed between a plurality of pressure ribs.

[0020] The present invention relates to a heating ball for a massage device, and has the advantage of being easily assembled while reducing manufacturing costs by using an easy-to-assemble cartridge heater member and rotating the fastening member and cover member through a bearing.

[0021] In addition, the present invention has the advantage of being able to assemble easily while reducing manufacturing costs by using a cartridge heater member that allows assembly without bolts and minimizes machined parts, and by fixing the fastening member through a snap ring.

[0022] In addition, the present invention has the advantage of enabling massage while gently applying pressure to the user by positioning the through hole of the cover member between the pressure ribs of the fastening member when the cover member is coupled to the fastening member.

[0023] In addition, the present invention has the advantage of being able to firmly connect the fastening member and the cover member by positioning a plurality of support members provided on the inner side of the cover member in the spaced-apart space formed between a plurality of pressure ribs provided on the fastening member when the cover member is coupled to the fastening member.

[0024] FIG. 1 is a perspective view of a heating ball for a massage device according to an embodiment of the present invention.

[0025] FIG. 2 is an exploded perspective view of a heating ball for a massage device according to an embodiment of the present invention.

[0026] FIG. 3 is a drawing showing a fastening member and a bearing according to an embodiment of the present invention.

[0027] FIG. 4 is a front view of a fastening member according to an embodiment of the present invention.

[0028] FIG. 5 is a perspective view showing a cover member according to an embodiment of the present invention.

[0029] FIG. 6 is a front view of a cover member according to an embodiment of the present invention.

[0030] FIG. 7 is a drawing showing a cartridge heater member and a snap ring according to an embodiment of the present invention.

[0031] FIG. 8 is a side view of a heating ball for a massage device according to an embodiment of the present invention.

[0032] Figure 9 is a cross-sectional view of AA in Figure 8.

[0033] FIG. 10 is a front view of a heating ball for a massage device according to an embodiment of the present invention.

[0034] Figure 11 is a cross-sectional view of BB of Figure 8.

[0035] This specification clarifies the scope of the present invention and explains the principles of the present invention and discloses embodiments so that those skilled in the art can practice the present invention. The disclosed embodiments may be implemented in various forms.

[0036] Expressions such as "comprising" or "may comprise" that may be used in various embodiments of the present invention indicate the existence of the disclosed corresponding function, operation, or component, and do not limit one or more additional functions, operations, or components. Furthermore, in various embodiments of the present invention, terms such as "comprising" or "having" are intended to specify the existence of the features, numbers, steps, operations, components, parts, or combinations thereof described in the specification, and should be understood as not precluding the existence or addition of one or more other features, numbers, steps, operations, components, parts, or combinations thereof.

[0037] When it is stated that a component is "connected or coupled" to another component, it should be understood that the component may be directly connected or coupled to the other component, but that a new component may also exist between the component and the other component. On the other hand, when it is stated that a component is "directly connected" or "directly coupled" to another component, it should be understood that no new component exists between the component and the other component.

[0038] The terms "first," "second," etc., as used in this specification may be used to describe various components, but the components should not be limited by these terms. The terms are used solely for the purpose of distinguishing one component from another.

[0039] The present invention relates to a heating ball for a massage device, and more specifically, to a heating ball for a massage device that can be easily assembled while reducing manufacturing costs by using an easy-to-assemble cartridge heater member and rotating the fastening member and cover member through a bearing.

[0040] A heating ball for a massage device according to an embodiment of the present invention can be used by being coupled to a massage device. Specifically, the heating ball for a massage device according to an embodiment of the present invention is capable of applying pressure to the user while in contact with the user, and the heating ball for a massage device according to an embodiment of the present invention can be coupled to a bracket provided in the massage device. Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the attached drawings.

[0041] A heating ball (100) for a massage device according to an embodiment of the present invention includes a fastening member (110), a cover member (140), and a cartridge heater member (150).

[0042] Referring to FIGS. 1 and 2, the fastening member (110) is intended to support the cover member (140) that comes into contact with the user, and the cartridge heater member (150) may be disposed inside the fastening member (110).

[0043] The above-mentioned fastening member (110) may include a coupling part (120) formed in a tubular shape with an internal space, and a pressing part (130) protruding outward along the circumferential direction of the coupling part (120).

[0044] Referring to FIGS. 3 and 4, the coupling portion (120) of the fastening member (110) is extended in a tubular shape with an internal space, and the cartridge heater member (150) can be inserted into the internal space of the coupling portion (120). Specifically, the coupling portion (120) may be formed in a cylindrical shape with one side and the other side open to the outside.

[0045] Referring to FIGS. 3 and 4, the pressing portion (130) of the fastening member (110) protrudes outward along the circumferential direction of the coupling portion (120), and the cover member (140) can be supported through the pressing portion (130). Additionally, the user can be pressed through the pressing portion (130).

[0046] Referring to FIGS. 1 and 2, the cover member (140) is coupled to the outside of the fastening member (110). The cover member (140) is a part that comes into contact with the user, and the cover member (140) may be a rubber ball made of rubber material. However, the cover member (140) is not limited to rubber material, and the cover member (140) may be made of various materials as long as it can press the user while in contact with the user.

[0047] Referring to FIGS. 5 and 6, the cover member (140) may be formed in a shape that can be coupled to the outside of the fastening member (110). According to an embodiment of the present invention, the cover member (140) may be formed in a ring shape or a donut shape and may have an internal space. One side and the other side of the cover member (140) may be open to the outside.

[0048] According to an embodiment of the present invention, when the cover member (140) is coupled to the outside of the fastening member (110), the fastening member (110) may be placed in the internal space of the cover member (140).

[0049] Referring to FIGS. 2 and FIGS. 7, the cartridge heater member (150) is inserted into the internal space of the coupling part (120). The cartridge heater member (150) may be formed in a tubular shape, and the cartridge heater member (150) may be formed in a shape that can be inserted into the internal space of the coupling part (120).

[0050] According to an embodiment of the present invention, the internal space of the coupling portion (120) may be formed in a cylindrical shape, and the cartridge heater member (150) may be formed in a cylindrical shape so as to be inserted into the internal space of the coupling portion (120).

[0051] Referring to FIG. 7, the cartridge heater member (150) according to an embodiment of the present invention may include a shaft (151) and a heater (152). The shaft (151) may be formed in a cylindrical shape with an internal space. The shaft (151) may be an external housing of the cartridge heater member (150), and the heater (152) may be disposed in the internal space of the shaft (151).

[0052] The heater (152) may generate heat while being inserted into the shaft (151). The heat generated by the heater (152) is transferred to the shaft (151), and the heat transferred to the shaft (151) may be transferred to the fastening member (110) and the cover member (140).

[0053] Referring to FIG. 7, one side of the shaft (151) may be closed, and the other side of the shaft (151) may be open to the outside. The heater (152) may be inserted into the interior of the shaft (151) through the other side of the shaft (151). Additionally, parts necessary to generate heat may be connected to the heater (152) through the other side of the shaft (151).

[0054] One side of the shaft (151) may be closed, thereby preventing the heater (152) inserted into the internal space of the shaft (151) from coming out.

[0055] According to an embodiment of the present invention, the fastening member (110) may be rotatable with respect to the cartridge heater member (150). Additionally, the cover member (140) may also be rotatable with respect to the cartridge heater member (150).

[0056] Specifically, when the cover member (140) is coupled to the outside of the fastening member (110), the fastening member (110) and the cover member (140) can move as a single unit. If the fastening member (110) is made rotatable with respect to the cartridge heater member (150), the cover member (140), which moves as a single unit with the fastening member (110), can be rotatable with respect to the cartridge heater member (150).

[0057] Referring to FIGS. 8 and 9, a heating ball for a massage device according to an embodiment of the present invention may include a bearing (160) for enabling the fastening member (110) to rotate with respect to the cartridge heater member (150). The bearing (160) may be a member formed in a ring shape.

[0058] Referring to FIG. 9, the shaft (151) of the cartridge heater member (150) is inserted into the internal space of the coupling part (120), and the bearing (160) can be inserted between the outer side of the shaft (151) and the inner side of the internal space of the coupling part (120).

[0059] As the bearing (160) is inserted between the outer side of the shaft (151) and the inner side of the inner space of the coupling part (120), the fastening member (110) can be rotated relative to the cartridge heater member (150). According to an embodiment of the present invention, one or more bearings (160) may be inserted between the outer side of the shaft (151) and the inner side of the inner space of the coupling part (120).

[0060] Referring to FIGS. 3 and FIGS. 9, the internal space of the coupling part (120) according to an embodiment of the present invention may include a first space (121) and a second space (122). The first space (121) may be a space positioned in the center of the internal space of the coupling part (120).

[0061] The width of the first space (121) may be the same as or slightly larger than the width of the shaft (151). By forming the width of the first space (121) to be the same as or slightly larger than the width of the shaft (151), the shaft (151) can be stably inserted into the internal space of the coupling part (120).

[0062] The second space (122) is provided at one or more of the first space (121) and has a width wider than the width of the first space (121). The second space (122) may be provided at one of the first space (121) and the other, and as shown in FIG. 9, the second space (122) may be provided at both the first space (121) and the other.

[0063] The second space (122) may be a space for seating the bearing (160). Specifically, the second space (122) may have a width greater than the width of the first space (121) and the width of the shaft (151). As the width of the second space (122) is greater than the width of the shaft (151), a gap is created between the inner side of the second space (122) and the outer side of the shaft (151), and the bearing (160) can be inserted into the gap.

[0064] Referring to FIGS. 3, 4, and 9, a seating ledge (123) may be provided between the first space (121) and the second space (122), and the bearing (160) may be seated on the seating ledge (123).

[0065] The above-mentioned mounting ledge (123) may be a step according to the difference in width between the first space (121) and the second space (122). When the bearing (160) is inserted into the second space (122), the bearing (160) can be mounted on the mounting ledge (123), and the bearing (160) can be supported through the mounting ledge (123).

[0066] Referring to FIGS. 2 and FIGS. 7, a heating ball for a massage device according to an embodiment of the present invention may include a snap ring (170) to prevent the fastening member (110) and the bearing (160) from coming off.

[0067] The snap ring (170) is coupled to one side of the shaft (151) and can support one side of the bearing (160) or one side of the coupling part (120). Referring to FIG. 7, the snap ring (170) may be formed in a ring shape and may include a main body part (171) and a contact part (172).

[0068] The main body (171) may be a part that extends in a ring shape. The main body (171) may be extended in a ring shape, but a point that is not connected to one part may be formed. Specifically, the main body (171) may be formed as an open curve rather than a closed curve as shown in FIG. 7.

[0069] The contact portion (172) may be a portion that protrudes outward from a part of the main body portion (171). The contact portion (172) may be in contact with one side of the bearing (160) or one side of the coupling portion (120). By bringing the contact portion (172) into contact with one side of the bearing (160) or one side of the coupling portion (120), the fastening member (110) and the bearing (160) can be prevented from detaching from the shaft (151).

[0070] Referring to FIGS. 9 and 10, the snap ring (170) according to an embodiment of the present invention is coupled to one side of the shaft (151) and can support one side of the bearing (160). Specifically, the contact portion (172) of the snap ring (170) can support one side of the bearing (160) by contacting one side of the bearing (160).

[0071] By supporting one side of the bearing (160) through the snap ring (170), it is possible to prevent the bearing (160) and the fastening member (110) from coming off the shaft (151).

[0072] In FIGS. 9 and 10, the contact portion (172) of the snap ring (170) is shown to be in contact with one side of the bearing (160), but is not limited thereto. If necessary, the contact portion (172) of the snap ring (170) may be in contact with one side of the coupling portion (120).

[0073] Referring to FIG. 7, a fixing groove (153) to which the snap ring (170) is fixed may be provided on one side of the shaft (151). The fixing groove (153) may be a groove extending in the circumferential direction of the shaft (151), which is formed in a cylindrical shape.

[0074] The ring-shaped snap ring (170) can be inserted into the fixed groove (153), and as the snap ring (170) is inserted into the fixed groove (153), the snap ring (170) can be fixed to the shaft (151).

[0075] Referring to FIGS. 2 and FIGS. 8, a heating ball for a massage device according to an embodiment of the present invention may include a module bracket (180) coupled to the other side of the shaft (151) and a bush (181) inserted into the other side of the shaft (151) and disposed between the other side of the fastening member (110) and the module bracket (180).

[0076] The above module bracket (180) may be a bracket that is coupled to a massage device, and the shaft (151) may be coupled to the module bracket (180). Additionally, the shaft (151) may be formed integrally with the module bracket (180) and coupled to the module bracket (180).

[0077] The bush (181) is positioned between the other side of the fastening member (110) and the module bracket (180). The shaft (151) can be supported through the bush (181), and the fastening member (110) and the module bracket (180) can be prevented from coming into contact through the bush (181).

[0078] As described above, the fastening member (110) may be rotatable with respect to the shaft (151). When the fastening member (110) is rotated with respect to the shaft (151), if the fastening member (110) comes into contact with the module bracket (180), friction may occur and the member may not rotate smoothly.

[0079] The bush (181) is positioned between the other side of the fastening member (110) and the module bracket (180), and by positioning the bush (181) between the other side of the fastening member (110) and the module bracket (180), the fastening member (110) can be prevented from coming into contact with the module bracket (180).

[0080] In the description above and the description to be described later, the term "other side" may refer to the direction from the shaft (151) toward the module bracket (180). Additionally, in the description above and the description to be described later, the term "one side" may refer to the direction opposite to the direction from the shaft (151) toward the module bracket (180).

[0081] The pressing portion (130) of the fastening member (110) according to an embodiment of the present invention may include a plurality of pressing ribs (131) that protrude outward along the circumferential direction of the coupling portion (120).

[0082] Referring to FIGS. 3 and 4, the pressure rib (131) protrudes outward from the coupling part (120), and the pressure rib (131) may extend from one side of the coupling part (120) to the other side. The coupling part (120) may be provided with a plurality of pressure ribs (131), and a space may be formed between the plurality of pressure ribs (131).

[0083] According to an embodiment of the present invention, the user can be pressed through the pressure rib (131) when performing a massage. Referring to FIGS. 3 and 4, the pressure rib (131) may include a base (132) and a projection (133).

[0084] The base (132) is connected to the coupling part (120) and extends from one side of the coupling part (120) to the other side. The base (132) is formed in a column shape and can protrude outward from the coupling part (120). Referring to FIG. 4, the width of the base (132) can become narrower as it goes outward from the coupling part (120) and then widen again.

[0085] The above-mentioned projection (133) may be provided at the end of the base (132) and may extend from one side to the other of the coupling part (120) while forming an arc shape or a circular cross-section. The projection (133) provided at the end of the base (132) may be formed in a cylindrical shape, thereby enabling the user to be pressed through the projection (133).

[0086] The cross-section of the above-mentioned protrusion (133) can form an arc shape or a circular cross-section, and as the cross-section of the above-mentioned protrusion (133) is formed in an arc shape or a circular shape, the user can be gently pressed through the above-mentioned protrusion (133).

[0087] Referring to FIGS. 6 and FIGS. 10, the cover member (140) may be provided with a through hole (141) that extends from one side of the cover member (140) toward the other side. A plurality of through holes (141) may be provided along the circumferential direction of the cover member (140).

[0088] Referring to FIG. 11, when the cover member (140) is coupled to the fastening member (110), the through hole (141) may be positioned between one of the pressure ribs (131) and another of the pressure ribs (131). Alternatively, the pressure rib (131) may be positioned between one of the through hole (141) and another of the through hole (141).

[0089] Specifically, the through hole (141) and the pressure rib (131) may be alternately arranged along the circumferential direction of the fastening member (110) and the cover member (140), and may be arranged in the order of the through hole (141) - the pressure rib (131) - the through hole (141) - the pressure rib (131).

[0090] In this way, by alternately arranging the through hole (141) and the pressure rib (131) along the circumferential direction of the fastening member (110) and the cover member (140), it is possible to perform a massage while gently applying pressure to the user through the fastening member (110) and the cover member (140).

[0091] Specifically, when the user is pressed through the pressure rib (131) of the fastening member (110), the cover member (140) can be easily pressed by the through hole (141) of the cover member (140) which is positioned on both sides of the pressure rib (131).

[0092] When applying pressure to the user through the pressure rib (131) of the fastening member (110), the user can be gently pressured as the cover member (140) is easily pressed by the through hole (141) of the cover member (140).

[0093] In the inner side of the cover member (140) according to an embodiment of the present invention, a plurality of support members (142) protruding inward along the circumferential direction of the cover member (140) may be provided.

[0094] Referring to FIG. 5 and FIG. 11, when the cover member (140) is coupled to the fastening member (110), the support member (142) can be inserted into the spaced-out space formed between the plurality of pressure ribs (131).

[0095] When the cover member (140) is coupled to the fastening member (110), the support member (142) is inserted into the space formed between the plurality of pressure ribs (131), thereby enabling the fastening member (110) and the cover member (140) to be firmly coupled.

[0096] As the fastening member (110) and the cover member (140) are firmly joined, the fastening member (110) and the cover member (140) can rotate as a single unit without shaking of the fastening member (110).

[0097] The heating ball for a massage device according to the embodiment of the present invention described above has the following effects.

[0098] The heating ball for a massage device according to an embodiment of the present invention has the advantage of being easily assembled while reducing manufacturing costs by using an easy-to-assemble cartridge heater member and rotating the fastening member and the cover member through a bearing.

[0099] In addition, the heating ball for a massage device according to an embodiment of the present invention has the advantage of being easy to assemble while reducing manufacturing costs by using a cartridge heater member that can be assembled without bolts and minimizes processed parts, and by fixing the fastening member through a snap ring.

[0100] In addition, the heating ball for a massage device according to an embodiment of the present invention has the advantage of being able to perform massage while gently applying pressure to the user by positioning the through hole of the cover member between the pressure ribs of the fastening member when the cover member is coupled to the fastening member.

[0101] In addition, the heating ball for a massage device according to an embodiment of the present invention has the advantage of being able to firmly connect the fastening member and the cover member by arranging a plurality of support members provided on the inner side of the cover member in the spaced-apart space formed between a plurality of pressure ribs provided on the fastening member when the cover member is coupled to the fastening member.

[0102] As such, the present invention has been described with reference to an embodiment illustrated in the drawings; however, this is merely illustrative, and those skilled in the art will understand that various modifications and variations of the embodiments are possible therefrom. Accordingly, the true scope of technical protection of the present invention should be determined by the technical spirit of the appended claims.

Claims

1. In a heating ball for a massage device used in a massage device, A fastening member comprising a connecting portion having a tubular shape with an internal space, and a pressing portion protruding outwardly along the circumferential direction of the connecting portion; A cover member coupled to the outside of the above-mentioned fastening member; A heating ball for a massage device characterized by including a cartridge heater member inserted into the internal space of the above-mentioned coupling portion.

2. In Paragraph 1, The above cartridge heater member is, A shaft having an internal space and formed in a cylindrical shape, and A heating ball for a massage device characterized by including a heater that generates heat while being inserted into the shaft.

3. In Paragraph 2, The above shaft is inserted into the internal space of the above coupling part, and A heating ball for a massage device characterized by having a bearing inserted between the outer side of the shaft and the inner side of the internal space of the coupling part.

4. In Paragraph 3, The internal space of the above-mentioned coupling part includes a first space and a second space provided at one or more of one side and the other side of the first space and having a width wider than the width of the first space. A heating ball for a massage device, characterized in that a seating ledge is provided between the first space and the second space, and the bearing is seated on the seating ledge.

5. In Paragraph 2, A module bracket coupled to the other side of the shaft, and A heating ball for a massage device, characterized by including a bushing inserted into the other side of the shaft and disposed between the other side of the fastening member and the module bracket.

6. In Paragraph 1, The pressing portion of the above-mentioned fastening member is, It includes a plurality of pressure ribs protruding outward along the circumferential direction of the above-mentioned joint, and A heating ball for a massage device characterized by having a spaced-apart space formed between a plurality of pressure ribs.

7. In Paragraph 6, The above-mentioned pressure rib is, A support that is connected to the above-mentioned joint and extends from one side of the above-mentioned joint to the other side, and A heating ball for a massage device, characterized by including a projection provided at the end of the above-mentioned base and extending from one side of the connecting part to the other while forming an arc-shaped or circular cross-section.

8. In Paragraph 1, The above cover member is provided with a through hole formed by a hole extending from one side of the cover member toward the other side, and A heating ball for a massage device, characterized in that the above-mentioned through holes are provided in plurality along the circumferential direction of the cover member.

9. In Paragraph 8, The pressing portion of the above-mentioned fastening member is, It includes a plurality of pressure ribs protruding outward along the circumferential direction of the above-mentioned joint, and a spaced-apart space is formed between the plurality of pressure ribs. A heating ball for a massage device, characterized in that when the cover member is coupled to the fastening member, the through hole is positioned between one of the pressure ribs and another of the pressure ribs.

10. In Paragraph 9, On the inner side of the above-mentioned cover member, a plurality of support members are provided that protrude inward along the circumferential direction of the above-mentioned cover member, and A heating ball for a massage device, characterized in that the above-mentioned support member is inserted into a spaced-apart space formed between a plurality of pressure ribs.

Citation Information

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