Universal ball head capable of threading and intelligent massage chair

Abstract

The utility model provides a universal ball head capable of threading and an intelligent massage chair. The universal ball head comprises a hollow shell and a hollow spherical rotating piece arranged in the shell. A base is movably arranged in a movable cavity in a shell, and an elastic piece is arranged between the base and the bottom of the movable cavity; the spherical rotating piece can elastically rotate in the rotating cavity, the spherical rotating piece is clamped and fixed through the elastic force of the elastic piece, hard friction between the spherical rotating piece and the inner wall of the rotating cavity is greatly reduced, and abrasion is reduced; even if the spherical rotating piece and the inner wall of the rotating cavity are abraded, the base can clamp the spherical rotating piece under the action of the elastic piece, and the situation that the spherical rotating piece cannot keep the posture after rotating after rotating is avoided. And the arrangement of the elastic piece enables the spherical rotating piece to have an activity space for moving in the elastic force direction of the elastic piece, so that the situation that the spherical rotating cavity is easily broken and damaged when a user accidentally extrudes or leans against the spherical rotating cavity is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of massage devices, and in particular to a threadable universal ball head and an intelligent massage chair. Background Art

[0002] Universal ball joints are mechanical connection devices that enable multi-angle rotation and are widely used in various mechanical equipment. Current universal ball joints typically consist of a spherical element and a housing with a spherical rotation groove. This rigid, rotatable connection between the spherical element and the spherical rotation groove presents several challenges.

[0003] Take the connection between the hand controller and the bracket base on a massage chair as an example. The hand controller is rotatably connected to the bracket base via a universal ball joint. Since the spherical element and the spherical rotation groove achieve a hard-to-hard rotatable connection, the spherical element can only rotate within the range of the spherical rotation groove, resulting in the following shortcomings:

[0004] 1. In order for the spherical element to maintain its rotational position within the spherical rotation groove, the spherical element and the spherical rotation groove need to be in close contact and have a certain degree of friction. Therefore, after a period of use, the spherical element and the spherical rotation groove will wear out, resulting in the spherical element being unable to maintain the corresponding position after being rotated to a certain angle, and thus making it impossible to adjust the hand controller to the angle that is suitable for the user.

[0005] 2. The spherical element has no additional elastic space within the spherical rotation groove. If the user accidentally squeezes or leans on the hand controller, the spherical rotation groove may easily break, causing damage. Utility Model Content

[0006] In view of this, the purpose of the present invention is to provide a universal ball joint with threadable cable and an intelligent massage chair to solve the above problems.

[0007] The utility model adopts the following scheme:

[0008] The present application provides a threadable universal ball head, comprising a centrally-through shell, a centrally-through spherical rotating member arranged in the shell, a centrally-through base, and a plurality of elastic members; a movable chamber having an upper spherical groove in the shell; the base being movably arranged in the movable chamber, and having a lower spherical groove and forming a rotating chamber with the upper spherical groove; the spherical rotating member being arranged in the rotating chamber; and the elastic member being arranged between the base and the bottom of the movable chamber.

[0009] Furthermore, the spherical rotating part includes a spherical core, a first upper spherical metal part and a first lower spherical metal part arranged on the upper and lower sides of the spherical core, and a metal ball head arranged on the first upper spherical metal part; and a central connecting part is connected to the metal ball head to connect the lower spherical metal part, the spherical core and the first upper spherical metal part.

[0010] Furthermore, the connecting piece is a hollow cup head screw; the head of the hollow cup head screw is placed on the central through hole of the base.

[0011] Furthermore, the metal ball head is formed with an outward extension portion, on which a placement groove for placing a wire connector is provided.

[0012] Furthermore, it also includes a second lower spherical metal part and a second upper spherical metal part; the second lower spherical metal part is arranged in the lower spherical groove and is adapted to the first lower spherical metal part; the second upper spherical metal part is arranged in the upper spherical groove and is adapted to the first upper spherical metal part.

[0013] Furthermore, high-viscosity damping grease is coated inside the rotating cavity and / or on the ball core.

[0014] Furthermore, it also includes a positioning member arranged at the bottom of the active chamber, on which a plurality of positioning grooves are provided; the bottom of the base is circumferentially provided with a plurality of limiting columns corresponding to the positioning grooves; the elastic member is a spring, which is arranged on the positioning grooves and the limiting columns.

[0015] Furthermore, the shell includes an upper shell with a lower opening and a lower shell with an upper opening.

[0016] The utility model also provides an intelligent massage chair, comprising a massage chair body and the threadable universal ball head, which is used for connecting a hand controller and a bracket base to achieve universal adjustment of the hand controller.

[0017] By adopting the above technical solution, the utility model can achieve the following technical effects:

[0018] The utility model provides a threadable universal ball head, which is provided with a base movably arranged in an active chamber within a shell, and an elastic member is provided between the base and the bottom of the active chamber; so that the spherical rotating member can not only rotate elastically in the rotating chamber, but also use the elastic force of the elastic member to clamp and fix the spherical rotating member, greatly reducing the hard friction between the spherical rotating member and the inner wall of the rotating chamber, reducing wear; at the same time, even if the spherical rotating member and the inner wall of the rotating chamber are worn, the base will clamp the spherical rotating member under the action of the elastic member, preventing the spherical rotating member from being unable to maintain its posture after rotation. The provision of the elastic member provides the spherical rotating member with a movable space to move along the elastic force direction of the elastic member, avoiding the situation where the spherical rotating chamber is easily broken and damaged due to inadvertent squeezing or leaning by the user. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without creative work.

[0020] Figure 1 This is a schematic diagram of the exploded structure of a threadable universal ball joint according to an embodiment of the present invention;

[0021] Figure 2 This is a schematic diagram of the internal structure of a universal ball joint that can be threaded. Figure 1 ;

[0022] Figure 3 This is a schematic diagram of the internal structure of a universal ball joint that can be threaded. Figure 2 ;

[0023] Figure 4 This is a schematic structural diagram of a spherical rotating part of a threadable universal ball joint according to an embodiment of the present invention;

[0024] Figure 5 This is a schematic structural diagram of multiple rotation postures of a spherical rotating part of a threadable universal ball joint according to an embodiment of the present invention;

[0025] Icons: cup head screw 1, lower shell 2, positioning part 3, elastic part 4, base 5, second lower spherical metal part 6, hollow cup head screw 7, gasket 8, first lower spherical metal part 9, ball core 10, first upper spherical metal part 11, metal ball head 12, second upper spherical metal part 13, decorative part 14, upper shell 15, wire 16, limiting groove 17, limiting protrusion 18, positioning groove 19, limiting column 20. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the utility model for which protection is sought, but merely represents the selected embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0027] Example

[0028] Combine Figures 1 to 5 As shown, this embodiment provides a threadable universal ball head, including a hollow shell, a hollow spherical rotating member arranged in the shell, a hollow base 5, and a plurality of elastic members 4; the shell has an active chamber with an upper spherical groove; the base 5 is movably arranged in the active chamber, and is provided with a lower spherical groove and forms a rotating chamber with the upper spherical groove; the spherical rotating member is arranged in the rotating chamber; the elastic member 4 is arranged between the base 5 and the bottom of the chamber.

[0029] By movably setting a base 5 in the inner chamber of the shell and disposing an elastic member 4 between the base 5 and the bottom of the movable chamber, the spherical rotating member can not only rotate elastically in the rotating chamber, but also use the elastic force of the elastic member 4 to clamp and fix the spherical rotating member, greatly reducing the hard friction between the spherical rotating member and the inner wall of the rotating chamber and reducing wear. At the same time, even if the spherical rotating member and the inner wall of the rotating chamber are worn, the base 5 will clamp the spherical rotating member under the action of the elastic member 4, preventing the spherical rotating member from being unable to maintain its posture after rotation. The provision of the elastic member 4 provides the spherical rotating member with room to move along the elastic force of the elastic member 4, preventing the spherical rotating chamber from being broken and damaged due to inadvertent squeezing or leaning by the user.

[0030] In this embodiment, the housing comprises an upper housing 15 with a lower opening and a lower housing 2 with an upper opening. The upper housing 15 and the lower housing 2 are connected by a cup-head screw 1. An upper chamber with an upper spherical groove is formed within the upper housing 15, while a lower chamber is formed within the lower housing 2. The upper and lower chambers enclose the movable chamber. A base 5 is movably mounted within the movable chamber. The base 5 is provided with a lower spherical groove that mates with the upper spherical groove. The rotation chamber is formed between the upper and lower spherical grooves. The spherical rotating member is movably mounted within the rotation chamber. Four elastic members 4 are springs and are circumferentially disposed between the base 5 and the bottom wall of the lower chamber. These elastic members 4 provide an upward force to the base 5, forcing the lower spherical groove toward the upper spherical groove. This force, in turn, clamps the spherical rotating member within the rotation chamber. The arrangement of the elastic members 4 provides downward elastic space for the base 5 to move. It not only reduces the hard friction between the spherical rotating part and the inner wall of the rotating cavity and reduces wear; in the event of wear, the base 5 will also clamp the spherical rotating part under the elastic force of the elastic part 4; and when the spherical rotating part is under pressure, the base 5 can overcome the elastic force of the elastic part 4 and move downward, thereby avoiding the rotating cavity from rupturing and causing damage.

[0031] like Figure 1 and Figure 4 Specifically, in this embodiment, the spherical rotating member includes a core 10, a first upper spherical metal member 11 and a first lower spherical metal member 9 disposed above and below the core 10, and a metal ball head 12 disposed on the first upper spherical metal member 11. The first lower spherical metal member 9, the core 10, the first upper spherical metal member 11, and the metal ball head 12 are arranged sequentially from bottom to top and connected to the metal ball head 12 via a central connecting member, thereby forming a single unit. The connecting member is a hollow cup head screw 7, and the metal ball head 12 has a central hole for passing an installation wire 16. The metal ball head 12 has an internal thread that matches the hollow cup head screw 7. A gasket 8 is disposed between the head of the hollow cup head screw 7 and the first lower spherical metal member 9. The metal ball head 12 has an outwardly extending portion with a slot for accommodating a wire connector. The upper shell 15 is further connected to a decorative piece 14 to improve the aesthetics of the spherical rotating piece.

[0032] In this embodiment, there is also a positioning member 3 arranged at the bottom of the active chamber, on which a plurality of positioning grooves 19 are provided; the bottom of the base 5 is circumferentially provided with a plurality of limiting columns 20 corresponding to the positioning grooves 19; the spring is arranged on the positioning grooves 19 and the limiting columns 20 to achieve positioning and fixation of the spring.

[0033] In this embodiment, a second lower spherical metal part 6 and a second upper spherical metal part 13 are also included. The second lower spherical metal part 6 is disposed in the lower spherical groove and is adapted to fit with the first lower spherical metal part 9. The second upper spherical metal part 13 is disposed in the upper spherical groove and is adapted to fit with the first upper spherical metal part 11. Specifically, a limiting groove 17 is provided on the lower spherical groove and the upper spherical groove, and a limiting protrusion 18 is provided on the second lower spherical metal part 6 and the second upper spherical metal part 13 that is adapted to fit with the limiting groove 17 to achieve positioning and prevent the second lower spherical metal part 6 and the second upper spherical metal part 13 from rotating on the lower spherical groove and the upper spherical groove. In this embodiment, the first upper spherical metal part 11 and the first lower spherical metal part 9 are copper sheets, while the second lower spherical metal part 6 and the second upper spherical metal part 13 are iron sheets. The provision of spherical metal parts can reduce wear and increase service life. The head of the hollow cup head screw 7 is placed on the central through hole of the base 5 to play a role in rotation limiting. When the spherical rotating part rotates, the head of the hollow cup head screw 7 contacts the side wall of the central through hole of the base 5 to achieve a limiting effect.

[0034] Preferably, high-viscosity damping grease is coated inside the rotating cavity and / or on the ball core 10, which can ensure that the resistance force felt by the user is stable when the user rotates, thereby improving the user experience.

[0035] The present invention also provides an intelligent massage chair comprising a massage chair body and a threadable universal ball joint for connecting a hand controller to a support base 5 to enable universal adjustment of the hand controller. The threadable universal ball joint provides a flexible connection between the hand controller and the support base 5, enabling universal adjustment, allowing the hand controller to be easily adjusted to a desired angle or posture.

[0036] The above are only preferred implementations of the present invention. The protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention fall within the protection scope of the present invention.

[0037] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0038] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of this utility model, "plurality" means two or more, unless otherwise specifically defined.

[0039] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection; direct connection, indirect connection through an intermediate medium, internal communication between two components, or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0040] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

Claims

1. A threadable universal ball joint, comprising a hollow housing and a hollow spherical rotating member disposed in the housing, characterized in that: It also includes a base with a central hole and multiple elastic parts; the shell has an active chamber with an upper spherical groove; the base is movably arranged in the active chamber, and is provided with a lower spherical groove and forms a rotating chamber with the upper spherical groove; the spherical rotating part is arranged in the rotating chamber; the elastic part is arranged between the base and the bottom of the active chamber.

2. The threadable universal ball joint according to claim 1, characterized in that: The spherical rotating part includes a spherical core, a first upper spherical metal part and a first lower spherical metal part arranged on the upper and lower sides of the spherical core, and a metal ball head arranged on the first upper spherical metal part; a central connecting part is connected to the metal ball head to connect the lower spherical metal part, the spherical core and the first upper spherical metal part.

3. The threadable universal ball joint according to claim 2, characterized in that: The connecting piece is a hollow cup head screw; the head of the hollow cup head screw is placed on the central through hole of the base.

4. The threadable universal ball joint according to claim 2, characterized in that: The metal ball head is formed with an outward extension portion, on which a placement groove for placing a wire connector is provided.

5. The threadable universal ball joint according to claim 2, characterized in that: It also includes a second lower spherical metal part and a second upper spherical metal part; the second lower spherical metal part is arranged in the lower spherical groove and is adapted to the first lower spherical metal part; the second upper spherical metal part is arranged in the upper spherical groove and is adapted to the first upper spherical metal part.

6. The threadable universal ball joint according to claim 2, characterized in that: High-viscosity damping grease is coated inside the rotating cavity and / or on the ball core.

7. The threadable universal ball joint according to any one of claims 1 to 6, characterized in that: It also includes a positioning member arranged at the bottom of the active chamber, on which a plurality of positioning grooves are arranged; the bottom of the base is circumferentially provided with a plurality of limiting columns corresponding to the positioning grooves; the elastic member is a spring, which is arranged on the positioning grooves and the limiting columns.

8. The threadable universal ball joint according to claim 7, characterized in that: The shell includes an upper shell with a lower opening and a lower shell with an upper opening.

9. An intelligent massage chair, comprising a massage chair body, characterized in that: It also includes a threadable universal ball head as described in any one of claims 1 to 8, which is used to connect the hand controller and the bracket base to achieve universal adjustment of the hand controller.

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