Hanging type self-attaching friction wheel truss hanging type motor driving hood opening and closing mechanism

Abstract

The invention discloses a suspension type self-fitting friction wheel truss hanging type motor driving hood opening and closing mechanism, which relates to the technical field of massage armchairs, and comprises a fixed hood, an overturning hood and an arc-shaped guide rail. The overturning head cover is opened and closed in a sliding mode along the track through the floating assembly, the floating assembly is composed of a suspension base, a floating bearing frame and a pre-tightening elastic piece, the suspension base is connected with the track in a sliding mode, and the floating bearing frame floats in the direction perpendicular to the track through the elastic piece and drives the friction wheel to be connected with the track in a rolling and pressing mode. The elastic piece provides self-adaptive contact pressure, the outer ring of the friction wheel is made of elastic materials, the driving wheel is driven by the motor, the driven wheel assists in supporting, and the rotating shaft and the track are concentrically arranged. Dynamic attachment of the friction wheel and the rail is achieved through the suspension type floating structure, opening and closing resistance is reduced, clamping stagnation or damage caused by deformation of the hood is avoided, manual / electric dual-mode operation is achieved, and the advantages of being stable in operation, high in deformation resistance, capable of achieving overload protection and the like are achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of massage chairs, and in particular to a hanging self - fitting friction wheel truss - type motor - driven headrest opening and closing mechanism. Background Art

[0002] When using a massage chair, in order to allow users to completely relax physically and mentally, a headrest is usually provided on the massage chair. The headrest is rotatably arranged on the massage chair. Users can rotate the headrest to create a comfortable and quiet space for themselves and prevent light from entering the user's eyes.

[0003] Generally, a massage chair with a rotatable headrest mainly drives the headrest to pivot electrically. The headrest is divided into a fixed headrest and a rotatable headrest. The rotatable headrest pivots relative to the fixed headrest to achieve opening and closing. The inner walls of the fixed headrest and the rotatable headrest are in contact. When the headrest deforms, the resistance is relatively large. Forcibly opening may cause damage to the mechanism or injury to personnel. Summary of the Invention

[0004] The purpose of the present invention is to overcome the disadvantages and deficiencies of the prior art, and provide a hanging self - fitting friction wheel truss - type motor - driven headrest opening and closing mechanism.

[0005] To achieve the above purpose, the present invention provides the following technical solution: A hanging self - fitting friction wheel truss - type motor - driven headrest opening and closing mechanism, including a fixed headrest and a rotatable headrest hinged inside the fixed headrest that can be opened and closed manually or automatically. An arc - shaped guiding track is connected inside the fixed headrest, and a floating component that slides along the arc - shaped guiding track is connected to the rotatable headrest. The floating component includes a suspension base and a floating carrier that can slide relative to each other. The suspension base is slidably connected to the arc - shaped guiding track, and the floating carrier is elastically connected to the suspension base through a pre - tightening elastic member. The floating carrier floats in a direction perpendicular to the tangent of the arc - shaped guiding track. The floating carrier is provided with a friction wheel that is in rolling and pressing contact with the arc - shaped guiding track. The pre - tightening elastic member forces the floating carrier to move towards the arc - shaped guiding track to maintain the contact pressure between the friction wheel and the arc - shaped guiding track. Among them, the suspension base, the floating carrier, and the friction wheel move synchronously along the arc - shaped guiding track with the opening and closing movement of the rotatable headrest.

[0006] As a preferred technical solution of the present invention, a guiding groove is arranged on the outer wall of the rotatable headrest along its opening and closing trajectory, and the suspension base and / or the floating carrier are in sliding guiding cooperation with the inner wall of the guiding groove.

[0007] As a preferred technical solution of the present invention, the middle position on the outside of the fixed headrest bulges and a sliding groove is formed inside, and the arc - shaped guiding track is installed in the sliding groove.

[0008] As a preferred technical solution of the present invention, the suspension base includes a suspension mechanism that slidably cooperates with the arc-shaped guiding track. The suspension mechanism includes a roller group pivotally connected to the suspension base, and the roller group clamps both sides of the lower flange of the arc-shaped guiding track.

[0009] As a preferred technical solution of the present invention, the suspension base includes suspension plates symmetrically arranged on both sides of the floating carrier. The suspension plates are in sliding and guiding cooperation with the floating carrier. The roller group includes a number of suspension rollers pivotally connected to the inner sides of the suspension plates. Arc-shaped extension plates for supporting the suspension rollers are provided on both sides of the arc-shaped guiding track, and the arc-shaped extension plates provide suspension support for the suspension rollers.

[0010] As a preferred technical solution of the present invention, the pre-tightening elastic member is a tension spring symmetrically distributed on both sides of the floating carrier, and both ends of the tension spring are respectively connected to the floating carrier and the suspension base.

[0011] As a preferred technical solution of the present invention, there are two friction wheels, one configured as a driving wheel and the other as a driven wheel. The driving wheel and the driven wheel are pivotally connected to the floating carrier and are spaced apart. Both the driving wheel and the driven wheel are in contact with the inner side of the arc-shaped guiding track, and the driving wheel is driven by a driving motor installed on one side of the floating carrier; or, there are two friction wheels, one configured as a driving wheel and the other as a driven wheel. The driving wheel is rotatably arranged in the floating carrier, and the driven wheel is rotatably installed on the suspension base. Both the driving wheel and the driven wheel are in contact with the inner side of the arc-shaped guiding track, and the driving wheel is driven by a driving motor installed on one side of the floating carrier.

[0012] As a preferred technical solution of the present invention, at least the outer ring part of the friction wheel is an elastic friction layer.

[0013] As a preferred technical solution of the present invention, rotating shafts that rotatably cooperate with the fixed hood are provided on both sides of the flipping hood, and the axis of the rotating shaft coincides with the center of the arc-shaped guiding track.

[0014] As a preferred technical solution of the present invention, arc-shaped grooves that are consistent with the opening and closing path of the flipping hood are provided on both sides of the fixed hood, and guide rods that are slidably installed in the arc-shaped grooves are provided on both sides of the flipping hood.

[0015] In summary, the beneficial effects of the present invention: The dynamic fit between the friction wheel and the track is achieved through the suspended floating structure, reducing the opening and closing resistance, avoiding jamming or damage caused by the deformation of the hood, and having both manual / electric dual-mode operations, with advantages such as stable operation, strong anti-deformation ability, and overload protection. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic structural diagram of the open state of the massage chair hood of the present invention; Figure 2 It is a schematic structural view of the closed state of the massage chair headrest of the present invention; Figure 3 It is a cross-sectional view of the headrest opening and closing mechanism in the present invention; Figure 4 It is a schematic structural view of the floating component in the present invention; Figure 5 It is a schematic structural view of the flip headrest in the present invention; Figure 6 is Figure 5 An enlarged view of the partial A.

[0017] Reference numerals: 1, fixed headrest; 2, flip headrest; 3, arc guide track; 4, floating component; 5, suspension base; 6, floating carrier; 7, friction wheel; 8, guide groove; 9, chute; 10, roller set; 11, suspension plate; 12, suspension roller; 13, arc extension plate; 14, pre-tightening elastic member; 15, drive motor; 16, rotating shaft; 17, arc groove. Detailed implementation manners

[0018] In order to make the technical means, creative features, achieved purposes and effects of the present invention easy to understand, the present invention will be further described below in conjunction with specific embodiments and the accompanying drawings. However, the following embodiments are only the preferred embodiments of the present invention, not all of them. Based on the embodiments in the embodiments, other embodiments obtained by those skilled in the art without creative efforts all fall within the protection scope of the present invention.

[0019] The specific embodiments of the present invention will be described below with reference to the accompanying drawings.

[0020] Such as Figures 1-6A suspended self - fitting friction wheel truss - type motor - driven hood opening and closing mechanism is shown, which includes a fixed hood 1 and a flip - up hood 2 hinged inside the fixed hood 1 that can be opened and closed manually or automatically (the fixed hood 1 and the flip - up hood 2 are relative, and it can also be that the flip - up hood 2 is arranged outside the fixed hood 1). An arc - shaped guiding track 3 is connected inside the fixed hood 1, and a floating assembly 4 that slides along the arc - shaped guiding track 3 is connected to the flip - up hood 2. The floating assembly 4 includes a suspended base 5 and a floating carrier 6 that can slide relative to each other. The suspended base 5 is slidably connected to the arc - shaped guiding track 3, and the floating carrier 6 is elastically connected to the suspended base 5 through a pre - tension elastic member 14. The floating carrier 6 floats along the direction perpendicular to the tangent of the arc - shaped guiding track 3. The floating carrier 6 is provided with a friction wheel 7 that rolls and presses against the arc - shaped guiding track 3. The pre - tension elastic member 14 forces the floating carrier 6 to move towards the arc - shaped guiding track 3 to maintain the contact pressure between the friction wheel 7 and the arc - shaped guiding track 3. Among them, the suspended base 5, the floating carrier 6, and the friction wheel 7 move synchronously along the arc - shaped guiding track 3 with the opening and closing movement of the flip - up hood 2. In this embodiment, the hood opening and closing mechanism can be applied to a massage chair, not limited to the usage scenario, and any product that requires a hood opening and closing mechanism can be used.

[0021] The dynamic fitting of the friction wheel 7 and the track is realized through a suspended floating structure, reducing the opening and closing resistance, avoiding jamming or damage caused by the deformation of the hood, and having both manual / electric dual - mode operations. It has the advantages of stable operation, strong anti - deformation ability, and overload protection. The floating carrier 6 is elastically connected to the suspended base 5 through a pre - tension elastic member 14 (such as a tension spring), enabling the friction wheel 7 to always float along the direction perpendicular to the arc - shaped guiding track 3, dynamically compensating for the deformation of the hood or assembly error, ensuring the constant contact pressure between the friction wheel 7 and the track, and avoiding slipping caused by insufficient pressure or abnormal wear caused by excessive pressure.

[0022] A guiding groove 8 is arranged along the opening and closing trajectory on the outer wall of the flip - up hood 2, and the suspended base 5 and / or the floating carrier 6 are in sliding guiding cooperation with the inner wall of the guiding groove 8 (the guiding part cooperates with the guiding groove, which is prior art, so no specific description is made).

[0023] The middle position on the outside of the fixed hood 1 bulges and a chute 9 is formed inside. The arc - shaped guiding track 3 is installed in the chute 9.

[0024] The suspended base 5 includes a suspension mechanism that slidably cooperates with the arc - shaped guiding track 3. The suspension mechanism includes a roller group 10 pivotally connected to the suspended base 5, and the roller group 10 is clamped on both sides of the lower flange of the arc - shaped guiding track 3.

[0025] The suspension base 5 includes suspension plates 11 symmetrically arranged on both sides of the floating carrier 6. The suspension plates 11 are in sliding and guiding cooperation with the floating carrier 6. The roller group 10 includes a number of suspension rollers 12 pivotally connected to the inner sides of the suspension plates 11. Arc-shaped extension plates 13 for supporting the suspension rollers 12 are provided on both sides of the arc-shaped guiding track 3. The arc-shaped extension plates 13 provide suspension support for the suspension rollers 12. The elastic friction layer on the outer ring of the friction wheel 7 and the truss-mounted suspension roller group 10 of 12 cooperate. When the hood deforms or is impacted by an external force, the elastic friction layer absorbs the deformation energy, and the suspension mechanism disperses the load through the flexible support of the roller group 10 and the arc-shaped extension plates 13, reducing the jamming risk by 90%.

[0026] The pre-tightening elastic members 14 are tension springs symmetrically distributed on both sides of the floating carrier 6. The two ends of the tension springs are respectively connected to the floating carrier 6 and the suspension base 5.

[0027] There are two friction wheels 7, one configured as a driving wheel and the other as a driven wheel. The driving wheel and the driven wheel are pivotally connected to the floating carrier 6 and are spaced apart from each other. Both the driving wheel and the driven wheel are in contact with the inner side of the arc-shaped guiding track 3. The driving wheel is driven by a driving motor 15 installed on one side of the floating carrier 6; or, there are two friction wheels 7, one configured as a driving wheel and the other as a driven wheel. The driving wheel is rotatably arranged inside the floating carrier 6, and the driven wheel is rotatably installed on the suspension base 5. Both the driving wheel and the driven wheel are in contact with the inner side of the arc-shaped guiding track 3. The driving wheel is driven by a driving motor 15 installed on one side of the floating carrier 6.

[0028] The driving wheel (motor-driven) and the driven wheel (following) form a bilateral envelope contact with the arc-shaped guiding track 3, increasing the effective friction contact area. Under the same contact pressure, the total frictional force is increased, allowing the system to transmit a larger torque without slipping.

[0029] At least the outer ring part of the friction wheel 7 is an elastic friction layer, which can be only the outermost circle, or the whole is made of a soft material. In this embodiment, the soft material can be rubber or silica gel or other materials that are prone to deformation under external force, have a low hardness and a high elasticity.

[0030] On both sides of the flipping hood 2, there are rotating shafts 16 that are rotatably matched with the fixed hood 1. The axis of the rotating shaft 16 coincides with the center of the arc-shaped guiding track 3. On both sides of the fixed hood 1, there are arc-shaped grooves 17 that are consistent with the opening and closing path of the flipping hood 2. On both sides of the flipping hood 2, there are guide rods that are slidably installed in the arc-shaped grooves 17. In this embodiment, the design that the axis of the rotating shaft 16 coincides with the center of the arc-shaped guiding track 3, combined with the path constraint of the guide rods of the flipping hood 2 and the arc-shaped grooves 17 of the fixed hood 1, eliminates the radial offset during the opening and closing process, with a small movement trajectory deviation, ensuring the smoothness of the hood opening and closing action.

[0031] The basic principles, main features and advantages of the present invention have been shown and described above. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and the descriptions in the specification are only preferred examples of the present invention and are not used to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of the present invention claimed is defined by the appended claims and their equivalents.

Claims

1. A suspended self-adhering friction wheel truss-suspended motor-driven hood opening and closing mechanism, comprising a fixed hood (1) and a flip hood (2) hinged to the inner side of the fixed hood (1) and capable of being opened and closed manually or automatically, characterized in that: The fixed head cover (1) is connected to an arc-shaped guide track (3), and the flip head cover (2) is connected to a floating component (4) that slides along the arc-shaped guide track (3). The floating component (4) includes a suspension base (5) and a floating support frame (6) that can slide relative to each other. The suspension base (5) is slidably connected to the arc-shaped guide track (3), and the floating support frame (6) is elastically connected to the suspension base (5) via a pre-tightening elastic member (14). The floating support frame (6) is moved along a direction perpendicular to the arc-shaped guide track. (3) floating in the tangential direction, the floating carrier (6) and / or the suspension base (5) are provided with a friction wheel (7) rolling and pressingly contacting with the arc guide track (3), the preload elastic member (14) forces the floating carrier (6) to move in the direction of the arc guide track (3) to maintain the contact pressure between the friction wheel (7) and the arc guide track (3), wherein the suspension base (5), the floating carrier (6) and the friction wheel (7) move synchronously along the arc guide track (3) with the opening and closing movement of the flip head cover (2).

2. The suspended self-adhering friction wheel truss-suspended motor-driven hood opening and closing mechanism according to claim 1 is characterized in that: The outer wall of the flip head cover (2) is provided with a guide groove (8) along its opening and closing track, and the suspension base (5) and / or the floating support frame (6) are slidingly guided in cooperation with the inner wall of the guide groove (8).

3. The suspended self-adhering friction wheel truss-suspended motor-driven hood opening and closing mechanism according to claim 1 or 2, characterized in that: The fixed head cover (1) is raised at a central position on the outside and forms a slide groove (9) on the inside, and the arc-shaped guide track (3) is installed in the slide groove (9).

4. The suspended self-adhering friction wheel truss-suspended motor-driven hood opening and closing mechanism according to claim 1 is characterized in that: The suspension base (5) comprises a suspension mechanism that is slidably matched with the arc-shaped guide track (3), and the suspension mechanism comprises a roller group (10) pivotally connected to the suspension base (5), and the roller group (10) is clamped on both sides of the lower flange of the arc-shaped guide track (3).

5. The suspended self-adhering friction wheel truss-suspended motor-driven hood opening and closing mechanism according to claim 4 is characterized in that: The suspension base (5) includes suspension plates (11) symmetrically arranged on both sides of the floating support frame (6), and the suspension plates (11) cooperate with the floating support frame (6) in a sliding guide manner. The roller group (10) includes a plurality of suspension rollers (12) pivotally connected to the inner side of the suspension plate (11). Arc extension plates (13) supporting the suspension rollers (12) are provided on both sides of the arc guide track (3), and the arc extension plates (13) provide suspension support for the suspension rollers (12).

6. The suspended self-adhering friction wheel truss-suspended motor-driven hood opening and closing mechanism according to claim 1, characterized in that: The preload elastic member (14) is a tension spring symmetrically distributed on both sides of the floating bearing frame (6), and the two ends of the tension spring are respectively connected to the floating bearing frame (6) and the suspension base (5).

7. The suspended self-adhering friction wheel truss-suspended motor-driven hood opening and closing mechanism according to claim 1 is characterized in that: The friction wheels (7) are provided with two, one is configured as a driving wheel and the other is configured as a driven wheel, the driving wheel and the driven wheel are pivotally connected to the floating carrier (6) and are arranged at an interval, the driving wheel and the driven wheel are both in contact with the inner side of the arc-shaped guide track (3), and the driving wheel is driven by a driving motor (15) installed on one side of the floating carrier (6); or, the friction wheels (7) are provided with two, one is configured as a driving wheel and the other is configured as a driven wheel, the driving wheel is rotatably arranged in the floating carrier (6), and the driven wheel is rotatably installed on the suspension base (5), the driving wheel and the driven wheel are both in contact with the inner side of the arc-shaped guide track (3), and the driving wheel is driven by a driving motor (15) installed on one side of the floating carrier (6).

8. The suspended self-adhering friction wheel truss-suspended motor-driven hood opening and closing mechanism according to claim 1, characterized in that: At least the outer ring portion of the friction wheel (7) is an elastic friction layer.

9. The suspended self-adhering friction wheel truss-suspended motor-driven hood opening and closing mechanism according to claim 1, characterized in that: Rotating shafts (16) that are rotatably matched with the fixed head cover (1) are provided on both sides of the flip head cover (2), and the axis of the rotating shaft (16) coincides with the center of the arc-shaped guide track (3).

10. The suspended self-adhering friction wheel truss-suspended motor-driven hood opening and closing mechanism according to claim 9, characterized in that: The fixed head cover (1) is provided with arc grooves (17) on both sides which are consistent with the opening and closing path of the flip head cover (2), and the flip head cover (2) is provided with guide rods which are slidably installed in the arc grooves (17) on both sides.

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