Floating supporting structure of seat chassis and seat

Abstract

The utility model discloses a floating supporting structure of a seat chassis and a seat. The floating supporting structure of the seat chassis comprises a cushion supporting frame, a base and an elastic buffering piece. A first matching part is arranged on the cushion supporting frame, and the first matching part is columnar and extends downwards from the bottom of the cushion supporting frame; the base is provided with a columnar second matching part which extends upwards; the first matching part and the second matching part are connected together in a sleeved mode so that the first matching part can move relative to the second matching part in the vertical direction. The elastic buffer piece is arranged between the first matching part and the second matching part so as to apply upward elastic stress to the first matching part; a limiting piece is arranged between the first matching part and the second matching part, and the limiting piece is used for limiting the first matching part to continue to move upwards when the first matching part moves upwards relative to the second matching part to the maximum position. According to the utility model, the comfort and the stability of the seat are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to chair technical field, concretely relates to a floating support structure of seat chassis and seat. BACKGROUND

[0002] The base of traditional seat and the supporting frame of cushion are rigidly matched, when the seat bears the weight of user and dynamic pressure change, it can not provide the user with buffering and adjusting function, when the cushion of user's hip and thigh contacts, the cushion can not float up and down to reduce the impact, in the process of user's changing sitting posture, the rigidly matched cushion supporting frame and base can not adapt to dynamic pressure change, thus, the comfort and stability of seat are greatly affected. SUMMARY

[0003] The utility model discloses a floating support structure of seat chassis and seat, which can realize the self-adaptive floating of the seat cushion supporting frame and the base, and improve the comfort and stability of the seat.

[0004] To achieve the above object, the utility model adopts the following technical scheme:

[0005] The floating support structure of seat chassis comprises a cushion supporting frame, a base and an elastic buffer.

[0006] The first matching part is columnar and extends downward from the bottom of the cushion supporting frame, and the second matching part extends upward and is columnar.

[0007] The elastic buffer is arranged between the first matching part and the second matching part to apply an upward elastic stress to the first matching part.

[0008] A limiting part is arranged between the first matching part and the second matching part to limit the upward movement of the first matching part when it moves upward to the maximum position relative to the second matching part.

[0009] Preferably, the second matching part comprises a guide column extending upward, and the first matching part is provided with a guide groove extending upward from its lower end surface, and the guide column is upwardly connected in the guide groove.

[0010] Preferably, the second matching part comprises an outer peripheral wall located around the guide column, and the outer peripheral wall and the guide column form a groove with an open top, and the first matching part is connected in the groove from top to bottom.

[0011] Preferably, the elastic buffer is a spring or an elastic rubber block sleeved on the periphery of the first fitting part, the lower end of the elastic buffer abuts against the top surface of the outer peripheral wall of the second fitting part, and the upper end abuts against the flange protruding outward from the top of the first fitting part.

[0012] Preferably, the guide column comprises a column body and a wear-resistant bushing sleeved on the outside of the column body, and the outer peripheral surface of the wear-resistant bushing is in contact with the inner wall surface of the guide groove.

[0013] Preferably, the cross section of the guide column and the cross section of the guide groove are matched in shape and are both non-rotational bodies, so as to limit the freedom of relative rotation of the first fitting part and the second fitting part through the guide column and the guide groove.

[0014] Preferably, the bottom of the wear-resistant bushing is provided with a radially outwardly extending flange, and the flange covers the bottom surface of the groove.

[0015] Preferably, the limiting member is a connecting screw, the connecting screw comprises a screw cap, a smooth rod portion extending downward from the bottom surface of the screw cap, and a threaded portion extending downward from the bottom end surface of the smooth rod portion; a through hole extending upward from the top of the guide groove is arranged in the first fitting part, and the portion of the outer peripheral edge of the first fitting part located at the top of the through hole forms a limiting surface; a threaded hole extending downward from the top end of the guide column is arranged on the guide column, the connecting screw passes through the through hole from top to bottom, the screw cap is arranged above the limiting surface, the threaded portion is screwed in the threaded hole, and the smooth rod portion is inserted in the through hole to form a guide mechanism with the through hole.

[0016] Preferably, the lower part of the cushion support frame is fixedly connected with two supports in a detachable manner, a mounting frame is arranged between the two supports, both ends of the mounting frame are respectively inserted in the two supports, a first fitting part is arranged at each end of the mounting frame, a second fitting part is arranged on each side of the base, and the two first fitting parts correspond to the two second fitting parts.

[0017] The seat comprises the floating support structure of the seat base.

[0018] Compared with the prior art, the seat has the following beneficial effects:

[0019] The first fitting part, the second fitting part and the elastic buffer enable the cushion support frame to be floatingly mounted on the base, the cushion can move downward in a self-adapting manner in the moment when a user contacts the seat cushion, and the self-adapting of the height of the cushion is finally realized by increasing the elastic stress of the elastic buffer, so that the impact between the buttocks and the thighs of the user and the seat cushion can be reduced when the buttocks and the thighs of the user contact the seat cushion, and the seat cushion can also perceive the dynamic change of the pressure when the user changes different sitting postures, so that the comfort and stability of the seat are improved. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 is a structural schematic view of the utility model;

[0021] Figure 2 is a sectional view of the utility model;

[0022] Figure 3 is Figure 2 is a structural schematic view of the connecting screw;

[0023] Figure 4 is Figure 2 is a structural schematic view of the wear-resistant bushing;

[0024] Figure 5 is Figure 1 is the A-A sectional view.

[0025] Wherein: 10, the cushion support frame; 12, the mounting frame; 13, the support; 20, the base; 30, the spring; 40, the connecting screw; 41, the nut; 42, the polished rod part; 43, the threaded part; 50, the first matching part; 51, the guide slot; 52, the through hole; 53, the boss; 54, the limiting surface; 55, the flange; 60, the second matching part; 61, the guide column; 611, the column body; 612, the wear-resistant bushing; 613, the threaded hole; 614, the flange; 62, the outer peripheral wall; 63, the recess. DETAILED DESCRIPTION

[0026] In the following, the utility model is further described in combination with the drawings and specific embodiments, and it should be noted that the following described embodiments or technical features can be combined to form new embodiments without conflict. Except for the special description, the materials and equipment used in the embodiments can be purchased from the market. The examples of the embodiments are shown in the drawings, wherein the same or similar reference signs represent the same or similar elements or elements with the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are only used to explain the application and cannot be understood as a limitation on the application.

[0027] In the description of the present application, it should be understood that the terms "upper", "lower", "front", "rear", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only used to facilitate the description of the present application and simplify the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise specified.

[0028] In the description of the present application, it is necessary to point out that, unless otherwise explicitly specified and limited, the terms "connected", "communicated", "connected" should be understood in a broad sense, for example, it can be fixedly connected, it can be connected through an intermediate medium, it can be the internal communication of two elements or the interaction relationship of two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0029] As Figure 1 , 2 , 3, 4, 5, it is a floating support structure of the seat chassis of the utility model, it includes cushion support frame 10, base 20, spring 30, the cushion of the seat is installed on the cushion support frame 10, the base 20 is the part for supporting the whole seat of the seat bottom, the cushion support frame 10 is provided with first matching part 50, first matching part 50 is columnar and extends downward from the bottom of cushion support frame 10;The base 20 is provided with the second matching part 60 that extends upward and is columnar, first matching part 50 and second matching part 60 are sleeved together, so that the sliding fit of the two, that is, first matching part 50 can move relative to second matching part 60 in the up-down direction;Specifically, a guide groove 51 extending upward from the bottom surface of first matching part 50 is provided, and a guide column 61 extending upward is provided on second matching part 60 to match guide groove 51, guide column 61 is inserted into guide groove 51 from bottom to top, first matching part 50 and second matching part 60 form an up-down telescopic mechanism by cooperating with guide column 61 and guide groove 51, so that the cushion support frame 10 has the freedom of up-down movement relative to the base 20, the spring 30 is located between first matching part 50 and second matching part 60, which is used to exert an upward elastic stress on first matching part 50, a connecting screw 40 is further provided between first matching part 50 and second matching part 60, the connecting screw 40 is fixedly connected to one of first matching part 50 and second matching part 60, and is movably connected to the other of first matching part 50 and second matching part 60, to limit the maximum displacement of first matching part 50 relative to second matching part 60 in upward movement, thereby preventing guide column 61 from being separated from the bottom opening of guide groove 51, when the cushion support frame 10 is not subjected to external force, first matching part 50 is in a high position by the elastic stress of spring 30, when the cushion support frame 10 is subjected to downward external force, first matching part 50 extrudes spring 30 downward, and first matching part 50 moves downward relative to second matching part 60.

[0030] It should be pointed out that the above-mentioned spring 30 of the utility model is arranged between first matching part 50 and second matching part 60, which is used to play the role of elastic buffering, and the spring 30 can also be replaced by other elastic buffering members, for example, a rubber block with elasticity.

[0031] When the user's buttocks and thighs contact the seat cushion, the seat cushion will move downward with the seat cushion support frame 10. As the seat cushion support frame moves downward, the compression of the spring 30 increases, and the elastic stress of the spring 30 applied to the first fitting part 50 also increases, until the elastic stress of the spring 30 and the weight of the user are balanced. Through the first fitting part 50, the second fitting part 60, and the elastic buffer, the seat cushion support frame 10 is floatingly installed on the base 20. When the user's buttocks and thighs contact the seat cushion, the seat cushion can move downward automatically, and as the elastic stress of the elastic buffer increases, the height of the seat cushion is finally adapted, thereby reducing the impact between the user's buttocks, thighs, and the seat cushion when the user's buttocks and thighs contact the seat cushion, and the seat cushion can also perceive the dynamic change of the pressure when the user changes different sitting postures, thus improving the comfort and stability of the seat.

[0032] In some embodiments, the first fitting part 50 and the second fitting part 60 can be sleeved with each other, or the guide column 61 can be arranged on the first fitting part 50, and the guide groove 51 can be arranged on the second fitting part 60.

[0033] In the preferred embodiment, the second fitting part 60 includes an outer peripheral wall 62 surrounding the guide column 61, and a top-opened groove 63 is formed between the outer peripheral wall 62 and the guide column 61. The part of the first fitting part 50 surrounding the guide groove 51 is embedded in the groove 63 from top to bottom. By inserting the part of the first fitting part 50 outside the guide groove 51 into the groove 63, the groove 63 and the first fitting part 50 can be further matched with each other to avoid the deflection of the first fitting part 50 when moving up and down relative to the second fitting part 60. The spring 30 is sleeved around the first fitting part 50, and the lower end thereof abuts against the top surface of the outer peripheral wall 62 of the second fitting part 60, and the upper end thereof abuts against the flange 55 protruding outward from the top of the first fitting part 50. When the elastic buffer is an elastic rubber block, the elastic rubber block can be arranged in a sleeve structure, and is sleeved around the first fitting part 50, and the upper and lower ends thereof abut against the flange 55 and the top surface of the outer peripheral wall 62, respectively.

[0034] The guide column 61 comprises a column body 611 and a wear-resistant bushing 612, the column body 611 is a plastic part integrally formed with the second matching part 60 and the base 20, the wear-resistant bushing 612 is made of metal, the wear-resistant bushing 612 is sleeved on the outside of the column body 611, the outer peripheral surface of the wear-resistant bushing 612 is in contact with the inner wall surface of the guide groove 51, the relative movement of the first matching part 50 and the second matching part 60 is guided, the wear-resistant bushing 612 enhances the wear resistance of the guide column 61, improves the service life of the seat, and in the case of wear of the wear-resistant bushing 612, the new wear-resistant bushing 612 can be replaced to ensure the stability of the floating support structure.

[0035] The cross section of the guide column 61 matches the cross section shape of the guide groove 51, and the cross sections of the two are set as non-rotating bodies, specifically, the cross section of the outer peripheral surface of the wear-resistant bushing 612 and the cross section shape of the guide groove 51 are set as special shapes, avoiding the relative rotation of the guide column 61 and the guide groove 51, thereby limiting the freedom of relative rotation of the first matching part 50 and the second matching part 60 through the cooperation of the guide column 61 and the guide groove 51, and improving the stability of the floating of the cushion support frame 10.

[0036] In addition, a flange 614 extending radially outward is arranged at the bottom of the wear-resistant bushing 612, the flange 614 covers the bottom surface of the groove 63, preventing the lower end surface of the first matching part 50 from colliding with the bottom surface of the groove 63, thereby providing better protection for the second matching part 60.

[0037] The connecting screw 40 described above serves as a limiting piece, which specifically comprises a nut 41, a light rod part 42 extending downward from the bottom surface of the nut 41, and a threaded part 43 extending downward from the bottom end surface of the light rod part 42. The first matching part 50 is internally provided with a through hole 52 extending upward from the top of the guide groove 51, and the portion of the first matching part 50 located at the outer periphery of the top of the through hole 52 forms a limiting surface 54. The first matching part 50 can be integrally provided as a cylindrical shape, and a boss 53 is arranged protruding on the inner wall surface thereof. The portion below the boss 53 forms the guide groove 51, and the through hole 52 extends from the upper surface of the boss 53 to the lower surface. The upper surface of the boss 53 is the limiting surface 54 described above. The guide column 61 is provided with a threaded hole 613 extending downward from the top end thereof. The connecting screw 40 passes through the through hole 52 from top to bottom, with the nut 41 placed above the limiting surface 54, and the threaded part 43 screwed in the threaded hole 613, and the light rod part 42 placed in the through hole 52. The light rod part 42 and the through hole 52 form a guide mechanism, which further guides the relative movement of the first matching part 50 and the second matching part 60 upward and downward, thereby improving the stability of the floating of the cushion support frame 10.

[0038] The utility model discloses a floating support structure of seat base, which comprises a seat base, a floating support frame and a base, wherein the floating support frame is arranged on the seat base, and the base is arranged on the floating support frame.

[0039] The utility model discloses a floating support structure of seat base, which comprises a seat base, a floating support frame and a base, wherein the floating support frame is arranged on the seat base, and the base is arranged on the floating support frame.

[0040] Finally, it should be noted that: the above-mentioned embodiment is only optional embodiment of the utility model, and cannot be used to limit the range of the utility model protection, and any non-essential change and replacement made by the person skilled in the art on the basis of the utility model all belong to the range of the utility model required protection.

Claims

1. A floating support structure for a seat pan, characterised in that, The seat cushion support frame, the base, and the elastic buffer; The first matching part is in the shape of a column and extends downward from the bottom of the seat cushion support frame, and the second matching part extends upward and is in the shape of a column. The elastic buffer is arranged between the first matching part and the second matching part to apply an elastic stress upward to the first matching part. The first matching part and the second matching part are provided with a limiting part for limiting the upward movement of the first matching part when the first matching part moves upward relative to the second matching part to the maximum position.

2. The floating support structure of a seat pan as claimed in claim 1, wherein, The second matching part includes a guide column extending upward, and the first matching part is provided with a guide groove extending upward from the lower end surface thereof, and the guide column is upwardly inserted into the guide groove.

3. A floating support structure for a seat pan as claimed in claim 2, wherein, The second matching part includes an outer peripheral wall located at the periphery of the guide column, and the outer peripheral wall and the guide column form a groove with an open top, and the first matching part is downwardly inserted into the groove.

4. The floating support structure of a seat pan according to claim 3, wherein The elastic buffer is a spring or an elastic rubber block arranged at the periphery of the first matching part, and the lower end of the elastic buffer abuts against the top surface of the outer peripheral wall of the second matching part, and the upper end thereof abuts against the flange outwardly protruding from the top of the first matching part.

5. The floating support structure of a seat pan according to claim 3, wherein The guide column includes a column body and a wear-resistant bushing arranged at the periphery of the column body, and the outer peripheral surface of the wear-resistant bushing is in contact with the inner wall surface of the guide groove.

6. A floating support structure for a seat pan as claimed in claim 5, wherein, The cross section of the guide column matches the cross section of the guide groove and is a non-rotational body, so as to limit the freedom of relative rotation of the first matching part and the second matching part through the guide column and the guide groove.

7. A floating support structure for a seat pan as claimed in claim 6, wherein, The bottom of the wear-resistant bushing is provided with a radially outwardly extending flange, and the flange covers the bottom surface of the groove.

8. The floating support structure of a seat pan as set forth in claim 2, wherein The limiting part is a connecting screw, which includes a nut, a light rod portion extending downward from the bottom surface of the nut, and a threaded portion extending downward from the bottom end surface of the light rod portion.

9. The floating support structure of a seat pan as set forth in claim 1, wherein, The lower end of the guide column is provided with a threaded hole extending downward from the top end thereof, the connecting screw passes through the through hole from top to bottom, the nut of the connecting screw is arranged above the limiting surface, the threaded portion is screwed into the threaded hole, and the light rod portion is inserted into the through hole to form a guide mechanism with the through hole.

10. A seat, characterized by The seat cushion support frame is downwardly and detachably connected with two supports, and a mounting frame is arranged between the two supports. The floating support structure includes the seat bottom of any one of claims 1-9. The floating support structure includes the seat bottom of any one of claims 1-9.

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