CN219290036U

CN219290036U - Massage chair

Info

Publication number: CN219290036U
Application number: CN202221972555.9U
Authority: CN
Inventors: 张世洪; 王帅帅
Original assignee: Xiamen Comfort Science and Technology Group Co Ltd; Xiamen Healthcare Electronic Co Ltd
Current assignee: Xiamen Comfort Science and Technology Group Co Ltd; Xiamen Healthcare Electronic Co Ltd
Priority date: 2022-07-28
Filing date: 2022-07-28
Publication date: 2023-07-04
Anticipated expiration: 2032-07-28

Abstract

The utility model relates to the field of massage equipment, and particularly discloses a massage chair, which comprises a seat frame, a chair frame, guide rails arranged on two sides of the seat frame, rollers and rotating shafts coaxially arranged on two sides of the chair frame in the width direction, wherein the rollers and the rotating shafts are respectively arranged on the two sides of the chair frame in the width direction; one end of the rotating shaft is rotationally connected with one end of the idler wheel, and the other end of the rotating shaft is fixedly connected with the chair frame; the roller can be in the corresponding guide rail, the end face of one side of the roller, which is far away from the rotating shaft, is in point contact with the guide rail, and the roller is in interference fit with the corresponding guide rail in the axial direction. The utility model solves the problem that the massage chair is easy to shake, and can improve the stability of the massage chair.

Description

Massage chair

Technical Field

The utility model relates to the field of massage equipment, in particular to a massage armchair.

Background

The existing massage chairs can be realized in a plurality of different modes for realizing the zero gravity adjusting angle, wherein one mode is realized by sliding the back frame roller in the back frame guide rail. Because the clearance exists between the back frame roller and the back frame guide rail in the mode at present, the size of the clearance can be adjusted by adopting an elastic piece (a rubber gasket and a spring) in order to improve the stability, when the massage chair is manually pushed out in a static state, obvious shaking can be generated, the feeling of poor stability of the massage chair is generated for a consumer, and the consumer can subjectively think that the quality of the massage chair is poor.

Disclosure of Invention

The technical problems to be solved by the utility model are as follows: provides a massage armchair, which improves the stability of the massage armchair during zero gravity adjustment.

In order to solve the technical problems, the utility model adopts the following technical scheme:

the massage chair comprises a seat frame, a chair frame, rollers and rotating shafts, wherein guide rails are arranged on two sides of the seat frame, and the rollers and the rotating shafts are coaxially arranged and respectively arranged on two sides of the seat frame in the width direction;

one end of the rotating shaft is rotationally connected with one end of the idler wheel, and the other end of the rotating shaft is fixedly connected with the chair frame;

the rollers are slidably arranged in the corresponding guide rails, and each roller comprises a rotating shaft connected with the chair frame and rollers rotatably sleeved at the end parts of the rotating shafts; the end face of one side of the roller, which is far away from the rotating shaft, is in point contact with the guide rail, and the roller is in interference fit with the corresponding guide rail in the axial direction.

Further, the end face is provided with a protrusion in interference fit with the guide rail, and a contact surface in the guide rail, which is in contact with the protrusion, is a curved surface.

Further, the end face is provided with an exhaust hole communicated with two side spaces in the axial direction of the end face, and the exhaust hole and the end face are arranged in a non-coaxial mode.

Further, the roller also comprises a salient point coaxially arranged with the roller;

the roller is in point contact with the axial end surface of the rotating shaft in the axial direction through the convex points.

Further, one side of the axial end face of the roller, which faces the rotating shaft, is provided with a pressing ring which is arranged around the salient point, and the axial height of the pressing ring is smaller than that of the salient point.

Further, the roller comprises a roller body, a connecting cylinder and a connecting part arranged around the outer wall of the connecting cylinder;

the roller body is connected with the connecting cylinder through the connecting part, the roller body is connected with the rotating shaft through the connecting cylinder, and the roller body reciprocates in the guide rail.

Further, the roller comprises reinforcing ribs which are uniformly distributed along the circumferential direction of the connecting cylinder, and the reinforcing ribs are respectively connected with the roller body and the connecting cylinder.

Further, the rollers have a gap between them in the radial direction and the inner wall of the guide rail.

Further, the maximum distance between the two rollers is a first distance, the distance between the two guide rails is a second distance, and the first distance is larger than the second distance.

In order to solve the technical problems, the utility model adopts another technical scheme that:

the massage chair comprises a seat frame and a chair frame, wherein guide rails are arranged on two sides of the chair frame, and the massage chair is characterized by also comprising rollers and rotating shafts which are coaxially arranged and respectively arranged on two sides of the seat frame in the width direction;

one end of the rotating shaft is rotationally connected with one end of the roller, and the other end of the rotating shaft is fixedly connected with the seat frame;

the roller can be in the corresponding guide rail, the end face of one side of the roller, which is far away from the rotating shaft, is in point contact with the guide rail, and the roller is in interference fit with the corresponding guide rail in the axial direction.

The utility model has the beneficial effects that: according to the utility model, the roller is in point contact with the guide rail, and is in interference fit with the guide rail in the axial direction, so that the shaking between the seat frame and the chair frame is avoided, and the stability between the back frame and the chair frame body is improved.

Drawings

FIG. 1 is a schematic view of a massage armchair roller and guide rail structure before assembly;

FIG. 2 is a schematic view of the assembled roller and rail structure of a massage chair according to the present utility model;

FIG. 3 is an enlarged view of portion A of FIG. 2;

FIG. 4 is a schematic diagram II of the assembled roller and rail of the massage armchair according to the present utility model;

FIG. 5 is an exploded view of a massage armchair according to the present utility model;

FIG. 6 is a partial cross-sectional view of a massage chair of the present utility model;

FIG. 7 is an enlarged view of portion B of FIG. 6;

FIG. 8 is a cross-sectional view of a roller and rail of the present utility model;

fig. 9 is a second cross-sectional view of the roller and rail of the present utility model.

Description of the reference numerals:

1. a mounting; 2. a chair frame;

3. a guide rail; 30. a contact surface;

4. a roller; 40. an end face; 41. a roller body; 42. a connecting cylinder; 43. a connection part; 44. reinforcing ribs; 45. extending ribs; 46. a protrusion; 47. a bump; 48. a pressing ring; 49. an exhaust hole;

5. a rotating shaft; 51. an axial end face.

Detailed Description

In order to describe the technical contents, the achieved objects and effects of the present utility model in detail, the following description will be made with reference to the embodiments in conjunction with the accompanying drawings.

Referring to fig. 1-9, a massage armchair comprises a seat frame, a chair frame, guide rails arranged on two sides of the seat frame, and rollers coaxially arranged and respectively arranged on two sides of the chair frame in the width direction;

From the above description, the beneficial effects of the utility model are as follows: according to the utility model, the roller is in point contact with the guide rail, and is in interference fit with the guide rail in the axial direction, so that the shaking between the seat frame and the chair frame is avoided, and the stability between the back frame and the chair frame body is improved.

As can be seen from the above description, the roller and the guide rail are in point contact through the contact between the protrusion and the curved surface, so as to reduce the contact area and further reduce the frictional resistance generated when the roller rolls relative to the guide rail.

From the above description, the exhaust hole can reduce the resistance of the roller and the guide rail during installation, and reduce the assembly difficulty.

As can be seen from the above description, the provision of the bump is used for reducing the contact area between the roller and the rotating shaft in the axial direction, and reducing the friction between the roller and the rotating shaft during rolling.

Further, one side of the axial end face of the roller, which faces the rotating shaft, is provided with a pressing ring which is arranged around the salient point, the pressing ring can be pressed on the rotating shaft in the axial direction, and the axial height of the pressing ring is smaller than that of the salient point.

It can be seen from the above description that, since the bump and the rotating shaft rotate relatively, the bump and the rotating shaft are worn after long-time use, and therefore, the axial height of the pressing ring is smaller than that of the bump for abutting against the rotating shaft after the bump is worn, so as to ensure that the roller can always maintain interference fit with the guide rail.

As can be seen from the above description, the roller body and the connecting tube form a complete roller structure, thereby improving the roller strength.

As can be seen from the above description, the provision of the reinforcing ribs is used for improving the connection strength between the connecting tube and the roller body, and improving the bearing force of the roller body.

The above description shows that the above-mentioned clearance is used for reducing the assembly difficulty when the roller is embedded into the guide rail, and for reducing the contact area between the roller and the inner wall of the guide rail, thereby reducing the friction resistance when the roller rolls and ensuring the rolling smoothness of the roller.

According to the above description, the first interval is larger than the second interval, so that the two rollers can be in interference fit with the corresponding guide rails in the axial direction all the time, and even if the rollers wear in the axial direction, the rollers can be always kept in mutual abutting with the guide rails in the axial direction within a certain range, and the stability of the massage armchair is improved.

Referring to fig. 1 to 9, a first embodiment of the present utility model is as follows:

the massage chair comprises a seat frame 1 and a chair frame 2, wherein guide rails 3 are arranged on two sides of the seat frame 1, the massage chair comprises the seat frame 1 and the chair frame 2, the guide rails 3 are arranged on two sides of the seat frame 1, rollers 4 which are coaxially arranged and respectively arranged on two sides of the chair frame 2 in the width direction and rotating shafts 5 which are coaxially arranged with the rollers 4 are also included; the rollers 4 are slidably arranged in the corresponding guide rails 3, and the rollers 4 comprise rollers 4 rotatably sleeved at the end parts of the rotating shafts 5; the end surface 40 of the roller 4 on the side far away from the rotating shaft 5 is in point contact with the guide rail 3, and the roller 4 is respectively in interference fit with the corresponding guide rail 3 in the axial direction. Preferably, two rollers 4 are respectively disposed on two sides of the seat frame 2 in the width direction, and four rollers 4 may be disposed on two sides of the seat frame 2 in pairs for further improving stability.

In this embodiment, the end surface 40 has a protrusion 46 in interference fit with the guide rail 3, and the contact surface 30 in the guide rail 3 contacting with the protrusion 46 is a curved surface, specifically, the curved surface may be a plane or a cambered surface protruding toward a side away from the rotating shaft 5. Preferably, the projections 46 are conical, and in other equivalent embodiments, the projections 46 may be hemispherical projections 46 or arcuate projections 46; the projection 46 is arranged coaxially with the roller 4.

In the present embodiment, the end face 40 has the vent hole 49 communicating with both side spaces in the axial direction of the end face 40, and the vent hole 49 is disposed non-coaxially with the end face 40. Specifically, the axis of the vent hole 49 and the axis of the boss 46 are parallel to each other, and the axis of the vent hole 49 and the axis of the boss 46 are not coaxially disposed.

In this embodiment, the roller 4 further includes a bump 47 coaxially disposed with the roller 4; because the roller 4 rolls relative to the guide rail 3 and rotates synchronously with the rotating shaft 5, in order to reduce the rotation resistance between the roller 4 and the rotating shaft 5, the roller 4 is in point contact with the axial end surface 51 of the rotating shaft 5 through the salient point 47 in the axial direction, so that the contact area between the rotating shaft 5 and the roller 4 in the axial direction is reduced, and the effect of reducing the rotation resistance is achieved while the tight connection between the rotating shaft 5 and the roller 4 is ensured.

In this embodiment, the side of the roller 4 facing the axial end surface 51 of the rotating shaft 5 has the pressing ring 48 surrounding the protruding point 47, in the initial state, the axial height of the pressing ring 48 is smaller than the axial height of the protruding point 47, and as the service life of the roller 4 is prolonged, the protruding point 47 will wear under long-time friction with the rotating shaft 5 and gradually reduce the axial height of the protruding point 47, when the wear reaches a certain degree, the height of the pressing ring 48 will be equal to or smaller than the axial height of the protruding point 47, and at this time, the pressing ring 48 will press against the axial end surface 51 of the rotating shaft 5. Preferably, the bumps 47 are cone-like, cone-like or hemispherical. In addition, the pressing ring 48 is further used for strengthening the roller 4, so that the rotating shaft 5 is prevented from penetrating the roller 4 due to insufficient wall thickness of the roller 4.

In this embodiment, the roller 4 includes a roller body 41, a connecting cylinder 42 coaxially arranged with the roller body 41, a connecting portion 43 arranged around the connecting cylinder 42, at least two reinforcing ribs 44 uniformly distributed along the circumferential direction of the connecting cylinder 42, and the reinforcing ribs 44 are perpendicular to the axis of the connecting cylinder 42; the roller body 41 is connected with the rotating shaft 5 through a connecting cylinder 42. One side of the roller body 41, which is far away from the protrusion 46 in the axial direction, is connected with the connecting cylinder 42 through the extending rib 45, and the extending rib 45 has a reversed-C structure, specifically, the extending rib 45 protrudes outwards gradually near the protrusion 46 in the axial direction of the connecting cylinder 42, so as to form a reversed-C structure, and be used for further enhancing the connection strength between the connecting cylinder 42 and the roller body 41. The reinforcing rib 44 is centrally disposed between the extending rib 45 and both ends of the connecting portion 43 in the axial direction of the connecting cylinder 42, so that the roller body 41 has a better bearing capacity.

In the present embodiment, the roller 4 has a gap a between the inner wall of the guide rail 3 in the radial direction.

In the present embodiment, the maximum distance between the two rollers 4 is a first distance b, and the distance between the two guide rails 3 is a second distance c, and the first distance b is larger than the second distance c.

In the present embodiment, the difference between the first pitch b and the second pitch c is less than twice the axial height of the projections 46. The difference between the first spacing b and the second spacing c is within this range, and the roller 4 is made easy to assemble while ensuring that an interference fit between the roller 4 and the guide rail 3 is maintained.

The working principle of the embodiment is as follows:

the roller 4 is pressed against the inner wall of the guide rail 3 in the axial direction, and the roller 4 rolls relative to the guide rail 3 along with the sitting posture of the human body, so that the chair frame 2 moves relative to the seat frame 1.

The second embodiment of the utility model is as follows:

the structure of the guide rail 3 and the roller 4 in this embodiment is the same as that of the first embodiment, but the difference between this embodiment and the first embodiment is that the guide rail 3 is disposed on the seat frame 2 and the roller 4 is disposed on the seat frame 1.

Specifically, the massage armchair in the embodiment comprises a seat frame 1 and a chair frame 2, wherein guide rails 3 are arranged on two sides of the chair frame 2, and the massage armchair further comprises rollers 4 which are coaxially arranged and respectively arranged on two sides of the seat frame 1 in the width direction and a rotating shaft 5 which is coaxially arranged with the rollers 4; one end of the rotating shaft 5 is rotationally connected with one end of the roller 4, and the other end of the rotating shaft 5 is fixedly connected with the seat frame 1; the rollers 4 can be in the corresponding guide rails 3, the end surface 40 of the roller 4 on the side far away from the rotating shaft 5 is in point contact with the guide rails 3, and the rollers 4 are respectively in interference fit with the corresponding guide rails 3 in the axial direction.

The working principle of the embodiment is as follows:

the roller 4 is pressed against the inner wall of the guide rail 3 in the axial direction, and the guide rail 3 always moves relative to the roller 4 and relative to the seat frame 1 along with the human sitting posture adjustment, so that the chair frame 2 moves relative to the seat frame 1.

The foregoing description is only illustrative of the present utility model and is not intended to limit the scope of the utility model, and all equivalent changes made by the specification and drawings of the present utility model, or direct or indirect application in the relevant art, are included in the scope of the present utility model.

Claims

1. The massage chair comprises a seat frame and a chair frame, wherein guide rails are arranged on two sides of the seat frame, and the massage chair is characterized by also comprising rollers and rotating shafts which are coaxially arranged and respectively arranged on two sides of the chair frame in the width direction; one end of the rotating shaft is rotationally connected with one end of the idler wheel, and the other end of the rotating shaft is fixedly connected with the chair frame;

2. The massage armchair of claim 1, wherein the end surface is provided with a protrusion in interference fit with the guide rail, and a contact surface in the guide rail, which is in contact with the protrusion, is a curved surface.

3. The massage armchair of claim 1, wherein said end face has vent holes communicating with spaces on both sides of said end face in an axial direction, said vent holes being disposed non-coaxially with said end face.

4. The massage armchair of claim 1, wherein one end of the roller further comprises a bump coaxially arranged with the roller;

5. The massage armchair of claim 4, wherein a side of the roller facing the axial end face of the rotating shaft is provided with a pressing ring arranged around the protruding point, the pressing ring can be pressed on the rotating shaft in the axial direction, and the axial height of the pressing ring is smaller than that of the protruding point.

6. The massage armchair according to claim 1, wherein the roller comprises a roller body, a connecting cylinder and a connecting part arranged around the outer wall of the connecting cylinder;

7. The massage armchair of claim 6, further comprising reinforcing ribs uniformly distributed along the circumference of the connecting cylinder, wherein the reinforcing ribs are respectively connected with the roller body and the connecting cylinder.

8. A massaging chair as claimed in claim 1, wherein said rollers have a gap between them in a radial direction and an inner wall of said guide rail.

9. The massage armchair of claim 1, wherein a maximum distance between two of said rollers is a first distance, and a distance between two of said rails is a second distance, said first distance being greater than said second distance.

10. The massage chair comprises a seat frame and a chair frame, wherein guide rails are arranged on two sides of the chair frame, and the massage chair is characterized by also comprising rollers and rotating shafts which are coaxially arranged and respectively arranged on two sides of the seat frame in the width direction;