Seat chassis with leisure function

Abstract

The utility model discloses a seat chassis with a leisure function, which is characterized in that a leisure assembly adjusts the torsion of a torsion spring through a second track seat, a second sliding block and a rotating rod, and comprises a first torsion spring, the second track seat, the second sliding block and the rotating rod; the rotating rod drives the first rail base to move horizontally, and the first rail base drives the second sliding block to move vertically through an inclined plane structure, so that the tightness of the first torsional spring is adjusted, and the hardness, namely the leisure force, of the movable frame or the backrest is adjusted; the structure is simpler, and the manufacturing cost can be reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to furniture technical field, especially a seat chassis with the function of being free from worry. BACKGROUND

[0002] Reference CN219629147U (a seat chassis), it realizes the adjustment of spring elasticity through the cooperation of adjustment assembly and spring assembly, realizes the adjustment of backrest softness, but the structure of adjustment assembly and spring assembly is more complex, leads to the higher manufacturing cost. UTILITY MODEL CONTENTS

[0003] The utility model discloses a seat chassis with the function of being free from worry, and the torsion of the torsional spring is adjusted through the second track seat, the second sliding block and the rotating rod, so that the softness of the movable frame or backrest is adjusted, and the structure is simpler.

[0004] To achieve this purpose, the utility model adopts the following technical scheme:

[0005] A seat chassis with the function of being free from worry, including base frame, box body and movable frame, one end of base frame is hinged with one end of movable frame through first pivot, the other end of movable frame is hinged with one end of box body through second pivot, the other end of box body is hinged with the other end of base frame through third pivot, and the box body is provided with strip-shaped hole matched with the third pivot.

[0006] Further including the function of being free from worry component,

[0007] The function of being free from worry component includes first torsional spring, second track seat, second sliding block and rotating rod,

[0008] The first torsional spring is sleeved on the second pivot, the first end of the first torsional spring abuts against the first face of the second sliding block, and the second end of the first torsional spring abuts against the first pivot,

[0009] The second face of the second sliding block away from the second track seat abuts against the face wall of the box body,

[0010] The rotating rod drives the horizontal movement of the first track seat, and the first track seat drives the vertical movement of the second sliding block in the form of inclined plane, so as to adjust the tightness of the first torsional spring.

[0011] In some embodiments, the second track seat is provided with a first inclined plane, and the second sliding block is provided with a second inclined plane matched with the first inclined plane, and the first inclined plane and the second inclined plane are connected through a track structure.

[0012] In some embodiments, the inclination angle of the first inclined plane is between 30 degrees and 40 degrees.

[0013] In some embodiments, the rotating rod drives the movement of the second track seat through a threaded structure.

[0014] In some embodiments, two first torsion springs are provided, two corresponding second track seats are provided, and two corresponding second sliders are provided, and the two second sliders are provided with two second inclined surfaces;

[0015] The two first inclined surfaces form a V shape.

[0016] In some embodiments, the rotating rod is provided with a positive threaded section and a negative threaded section, one of the second track seats is screwed with the positive threaded section, and the other second track seat is screwed with the negative threaded section.

[0017] In some embodiments, the box body is provided with a cavity capable of accommodating the second track seat and the second slider.

[0018] In some embodiments, an angle adjusting mechanism is further included.

[0019] The angle adjusting mechanism includes a card, the movable frame is provided with a plurality of slots matched with the card, and the angle adjusting of the movable frame is realized by connecting the card to the slots at different positions.

[0020] In some embodiments, the horizontal plate of the box body is provided with a plurality of slots, and the plurality of slots are arranged in a vertical direction.

[0021] In some embodiments, the angle adjusting mechanism includes a first dial, a first rope, a first slider, a first track seat, and a first spring.

[0022] The first dial is connected with one end of the first rope, and the other end of the first rope is connected with the first slider.

[0023] The first slider is connected with the first track seat through a track structure, and the first spring is arranged between the first slider and the first track seat.

[0024] The first slider is connected with the card through a screw.

[0025] The utility model discloses the beneficial effects: the component is adjusted the torsion of torsion spring through the second track seat, the second slider and the rotating rod, thereby adjusting the soft and hard degree of the movable frame or backrest, and the structure is simpler. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 It is one of structural drawings of the seat chassis of the utility model;

[0027] Figure 2 It is the second structural drawing of the seat chassis of the utility model;

[0028] Figure 3 It is one of exploded views of the seat chassis of the utility model;

[0029] Figure 4 It is the second exploded view of the seat chassis of the utility model;

[0030] Figure 5 is a structure diagram of the free component of the utility model;

[0031] Figure 6 is an exploded view of the free component of the utility model;

[0032] Figure 7 is a sectional view of the seat chassis of the utility model, wherein angle adjusting mechanism and height adjusting mechanism are omitted;

[0033] Figure 8 is a structure diagram of the angle adjusting mechanism of the utility model;

[0034] Figure 9 is an exploded view of the angle adjusting mechanism of the utility model;

[0035] Figure 10 is a structure diagram of the height adjusting mechanism of the utility model;

[0036] Wherein: 100 - chassis;1 - base frame;2 - box body;21 - column hole;22 - cavity;23 - strip hole;24 - face wall;3 - movable frame;30 - cross plate;31 - slot;4 - angle adjusting mechanism;41 - first paddle;42 - first rope;43 - first sliding block;44 - card;45 - screw;46 - first rail seat;47 - first spring;5 - free component;50 - first torsion spring;501 - first end;502 - second end;51 - second rail seat;511 - first inclined surface;52 - second sliding block;521 - first face;522 - second face;523 - second inclined surface;524 - first screw hole;53 - rotating rod;531 - positive screw thread segment;532 - negative screw thread segment;6 - height adjusting mechanism;61 - second paddle;62 - second rope;63 - cam;64 - support;71 - first rotating shaft;72 - second rotating shaft;73 - third rotating shaft. DETAILED DESCRIPTION

[0037] The utility model will be further explained in detail in connection with the drawings.

[0038] Reference Figures 1 to 7 A seat chassis with free function, the chassis 100 includes base frame 1, box body 2 and movable frame 3;

[0039] The base frame 1 can be assembled below the seat cushion through fastener, and the end of the movable frame 3 is fixedly connected with the backrest;

[0040] One end of the base frame 1 is hinged to one end of the movable frame 3 through a first rotating shaft 71, the other end of the movable frame 3 is hinged to one end of the box body 2 through a second rotating shaft 72, and the other end of the box body 2 is hinged to the other end of the base frame 1 through a third rotating shaft 73, so that the base frame 1, the box body 2 and the movable frame 3 are hinged in sequence, and the base frame 1, the box body 2 and the movable frame 3 are provided with shaft holes matched with the corresponding rotating shafts, wherein, in order to realize that the box body 2 and the movable frame 3 can rotate within a certain range, the box body 2 is provided with a strip-shaped hole 23 matched with the third rotating shaft 73, that is, the shaft hole is the strip-shaped hole 23. In this way, the box body 2 and the movable frame 3 have a certain amount of movement and can rotate appropriately.

[0041] Reference Figure 3 With Figure 4 It also includes a carefree component 5; the carefree component 5 enables the backrest to have a certain self-adaptive and self-adjusting angle, that is, it can appropriately self-adjust its angle according to the size of external force (for example, the weight of the user). For example, for a user who is thin, the force received by the backrest is small, and the adjustment angle is small, and for a user who is strong and robust, the force received by the backrest is large, and the adjustment angle is large. It can automatically adapt and adjust according to users of different weights to improve comfort, which can also be understood as carefree force.

[0042] Reference Figure 5 With Figure 6 The carefree component 5 includes a first torsional spring 50, a second rail seat 51, a second sliding block 52 and a rotating rod 53.

[0043] The first torsional spring 50 is sleeved on the second rotating shaft 72, the first end 501 of the first torsional spring 50 abuts against the first face 521 of the second sliding block 52, and the first face 521 is arranged close to the second rail seat 51, and the second end 502 of the first torsional spring 50 abuts against the first rotating shaft 71;

[0044] The second face 522 of the second sliding block 52 away from the second rail seat 51 abuts against the face wall 24 of the box body 2;

[0045] The rotating rod 53 drives the first rail seat 46 to move horizontally, and the first rail seat 46 drives the second sliding block 52 to move vertically in a slope structure, so as to adjust the tightness of the first torsional spring 50.

[0046] In this way, the first end 501 of the torsional spring is not directly connected with the movable frame 3, but is indirectly connected with the movable frame 3 through the second sliding block 52 and the box body 2, that is, the torsional force of the torsional spring is transmitted to the second sliding block 52, then to the box body 2, and then acts on the movable frame 3.

[0047] When the second sliding block 52 moves close to the box body 2, the torsion amount of the first torsional spring 50 increases, the torsional force increases, and the rotation of the movable frame 3 becomes harder, that is, it is not easy to rotate, and under the same external force, the angle range of rotation is relatively reduced;

[0048] When the second slider 52 moves away from the box body 2, the torsion amount of the torsion spring decreases, the torsion force decreases, the rotation of the movable frame 3 is softer, that is, it is easier to rotate, and under the same external force, the angle range of rotation is relatively increased;

[0049] Therefore, the user can adjust the torsion force of the torsion spring according to needs, thereby adjusting the softness and hardness of the movable frame 3 (freedom force) and adjusting the softness and hardness of the backrest. It can be understood that the change of the freedom force of the backrest of the seat during the rear self-adjustment adapts to the weight or use habit of different users.

[0050] Reference Figure 6 The second rail seat 51 is provided with a first inclined surface 511, and the second slider 52 is provided with a second inclined surface 523 matched with the first inclined surface 511. The first inclined surface 511 and the second inclined surface 523 are connected through a rail structure. For example, the first inclined surface 511 is provided with a concave rail, and the first inclined surface 511 is provided with a convex rail. The concave rail and the convex rail are matched to realize connection and guidance. Through the inclined surface structure, the horizontal movement of the second rail seat 51 is converted into the vertical movement of the second slider 52.

[0051] The inclination angle of the first inclined surface 511 is between 30 degrees and 40 degrees. The inclination angle refers to the included angle between the first inclined surface 511 and the horizontal plane. The inclination angle is set to more easily convert the horizontal movement of the second rail seat 51 into the vertical movement of the second slider 52, that is, the second slider 52 can be driven more easily.

[0052] Reference Figure 6 The rotating rod 53 drives the second rail seat 51 to move through a threaded structure, and the second rail seat 51 is provided with a corresponding threaded hole.

[0053] The first torsion spring 50 can be provided with two, and the corresponding second rail seat 51 is provided with two, for example, opposite or symmetrically arranged. The corresponding second slider 52 is provided with two second inclined surfaces 523, for example, the two second inclined surfaces 523 are arranged oppositely or symmetrically, so that the second slider 52 is roughly in the shape of an isosceles trapezoid; and the two first inclined surfaces 511 form a V-shaped structure, which is beneficial to balance the stress and make the movement more stable.

[0054] Reference Figure 6 The rotating rod 53 is provided with a positive threaded section 531 and a negative threaded section. One of the second rail seats 51 is screwed with the positive threaded section 531, and the other second rail seat 51 is screwed with the negative threaded section. For example, the positive threaded section 531 is a right-handed threaded structure, and the negative threaded section 532 is a left-handed threaded structure. Of course, the opposite arrangement is also possible, so as to enable the two second rail seats 51 to move relatively, for example, to move relatively close and relatively far away, and to realize synchronous driving.

[0055] Reference Figure 5 And Figure 7The box body 2 is provided with a cavity 22 capable of accommodating the second rail seat 51 and the second sliding block 52. The cavity 22 also has a guiding effect, limiting the horizontal movement of the second rail seat 51 and the vertical movement of the second sliding block 52.

[0056] It can be seen that the free component 5 adjusts the hardness of the movable frame 3 or the backrest by adjusting the torsion of the first torsion spring 50, thereby adjusting the degree of freedom (free force), which is simple in structure and conducive to reducing costs. The first torsion spring 50 is sleeved on the second rotating shaft 72, the second rail seat 51 and the second sliding block 52 are arranged in the middle part of the box body 2, and the structure is more compact. It can be understood that the present application provides a new structure with a free function.

[0057] Reference Figure 1 In addition to the above, the angle adjusting mechanism 4 is also included for adjusting the angle of the backrest.

[0058] Reference Figure 8 In addition to the above, Figure 9 The angle adjusting mechanism 4 includes a card 44, and the movable frame 3 is provided with a plurality of slots 31 matched with the card 44. The angle adjustment of the movable frame 3 is achieved by connecting the card 44 to the slots 31 at different positions, thereby achieving the angle adjustment of the backrest.

[0059] The horizontal plate 30 of the box body 2 is provided with a plurality of slots 31 arranged in the vertical direction, for example, four slots 31 are arranged, thereby forming a multi-stage and multi-angle adjustment.

[0060] The angle adjusting mechanism 4 includes a first toggle 41, a first rope 42, a first sliding block 43, a first rail seat 46, and a first spring 47.

[0061] The first toggle 41 is connected to one end of the first rope 42, and the other end of the first rope 42 is connected to the first sliding block 43.

[0062] The first sliding block 43 is connected to the first rail seat 46 through a rail structure, for example, the first rail seat 46 is provided with a T-shaped guide rail, the first sliding block 43 is provided with a T-shaped guide groove, and the first spring 47 is arranged between the first sliding block 43 and the first rail seat 46. The first rail seat 46 can be fixed to the box body 2 by fasteners or the like.

[0063] The first sliding block 43 is connected to the card 44 by a screw 45.

[0064] The first toggle 41 is actuated to pull the first rope 42 and the first sliding block 43 to move, so as to make the card 44 retract backward. When the movable frame 3 or the backrest is adjusted to a preset angle, the first toggle 41 is released, the first spring 47 pushes the first sliding block 43 to extend and reset, and the card 44 is inserted into the corresponding slot 31, thereby achieving the adjustment and limitation of the angle of the backrest.

[0065] ReferenceFigure 3 With Figure 10 Further comprising height adjusting mechanism 6, for triggering the air pressure rod switch, driving the air pressure rod telescopic, realizing the height adjustment of the seat.

[0066] Referring to Figure 10 The height adjusting mechanism 6 comprises a second dial 61, a second rope 62, a cam 63 and a bracket 64.

[0067] The second dial 61 is connected with one end of the second rope 62, the other end of the second rope 62 is connected with the cam 63, the cam 63 is rotatably connected with the bracket 64 through a rotating shaft structure, the bracket 64 can be fixed on the box body 2, the box body 2 is provided with a column hole 21 matched with the air pressure rod. Dial or press the second dial 61, thereby pulling the second rope 62, thereby pulling the cam 63 to rotate to the air pressure rod, thereby triggering the valve of the air pressure rod, thereby controlling the telescopic of the air pressure rod, and further realizing the height adjustment of the seat.

[0068] The above only discloses some embodiments of the present application. For those skilled in the art, without departing from the inventive concept of the present application, a number of modifications and improvements can be made, which are all within the protection scope of the present application.

Claims

1. A seat pan with a free function, characterized in that, It includes base frame (1), box body (2) and movable frame (3); one end of base frame (1) is hinged to one end of movable frame (3) through first rotating shaft (71), the other end of movable frame (3) is hinged to one end of box body (2) through second rotating shaft (72), the other end of box body (2) is hinged to the other end of base frame (1) through third rotating shaft (73), box body (2) is provided with strip-shaped hole (23) matched with third rotating shaft (73); It also includes carefree component (5); The carefree component (5) includes first torsional spring (50), second track seat (51), second sliding block (52) and rotating rod (53); The first torsional spring (50) is sleeved on the second rotating shaft (72), the first end (501) of the first torsional spring (50) abuts against the first face (521) of the second sliding block (52), and the second end (502) of the first torsional spring (50) abuts against the first rotating shaft (71); The second face (522) of the second sliding block (52) away from the second track seat (51) abuts against the face wall (24) of the box body (2); The rotating rod (53) drives the horizontal movement of the first track seat (46), and the first track seat (46) drives the vertical movement of the second sliding block (52) in an inclined surface structure, so as to adjust the tightness of the first torsional spring (50).

2. The seat pan with the eutony function according to claim 1, characterized in that, The second track seat (51) is provided with a first inclined surface (511), and the second sliding block (52) is provided with a second inclined surface (523) matched therewith, and the first inclined surface (511) and the second inclined surface (523) are connected through a track structure.

3. The seat pan with the eutony function according to claim 2, characterized in that, The inclination angle of the first inclined surface (511) is between 30 degrees and 40 degrees.

4. The seat pan with the eutony function according to claim 3, characterized in that, The rotating rod (53) drives the movement of the second track seat (51) through a threaded structure.

5. The seat pan with the eutony function according to claim 4, wherein The first torsional spring (50) is provided with two, and the second track seat (51) is provided with two corresponding, and the second sliding block (52) is provided with two second inclined surfaces (523) corresponding. The two first inclined surfaces (511) form a V-shaped structure.

6. The seat pan with the eutony function according to claim 5, wherein, The rotating rod (53) is provided with a positive threaded section (531) and a negative threaded section (532), one of the second track seats (51) is screwed with the positive threaded section (531), and the other of the second track seats (51) is screwed with the negative threaded section (532).

7. The seat pan with the egress function according to claim 6, wherein, The box body (2) is provided with a cavity (22) capable of accommodating the second track seat (51) and the second sliding block (52).

8. The seat pan with the eutony function according to any one of claims 1 to 7, characterized in that, It also includes angle adjusting mechanism (4); The angle adjusting mechanism (4) includes a card (44), the movable frame (3) is provided with a plurality of insertion grooves (31) matched with the card (44), and the angle adjustment of the movable frame (3) is realized by connecting the insertion grooves (31) at different positions through the card (44).

9. The seat pan with the eutony function according to claim 8, wherein, The horizontal plate (30) of the box body (2) is provided with a plurality of insertion grooves (31), and a plurality of insertion grooves (31) are arranged in the vertical direction.

10. The seat pan with the eutony function according to claim 8, wherein, The angle adjusting mechanism (4) includes first tab (41), first rope body (42), first sliding block (43), first track seat (46) and first spring (47). The first dial (41) is connected with one end of a first rope (42), and the other end of the first rope (42) is connected with a first sliding block (43); The first sliding block (43) is connected with a first track seat (46) through a track structure, and a first spring (47) is arranged between the first sliding block (43) and the first track seat (46); The first sliding block (43) is connected with a card (44) through a screw (45).

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