Adjusting device and seat

Abstract

The utility model discloses an adjusting device and a seat. The adjusting device comprises a base, a rear seat, a chassis, a sliding seat, a backrest and an elastic sheet, the rear seat is located behind the base and rotationally connected with the base. The chassis is located above the base and rotationally connected with the base and the rear seat. The sliding seat is located above the chassis, the sliding seat is slidably connected to the chassis in the front-back direction, the sliding seat is connected with the rear seat through a swing arm, and the two ends of the swing arm are rotationally connected with the sliding seat and the rear seat respectively. The backrest is located behind the sliding seat and slidably connected to the rear seat in the vertical direction. Two ends of the elastic sheet are respectively connected with the backrest and the sliding seat; when the backrest is pressed to slide downwards, the rear seat and the chassis rotate relative to the base, the sliding seat slides forwards, and the elastic piece is pressed to deform and provides upward sliding bias force for the backrest. The adjusting device can achieve the effect of self-adaptively adjusting the gravity center and the sitting posture of the human body, safety is enhanced, and the comfort level of a user is improved.

Description

Technical Field

[0001] This utility model relates to the field of seating technology, and in particular to an adjustment device and a seat. Background Technology

[0002] Chairs are an indispensable piece of furniture for people to use when working or resting, serving to support the weight of the body. Existing chairs typically have a spring mechanism that allows for adaptive adjustment, automatically adjusting the backrest angle according to the body's weight. However, this simple spring mechanism provides a poor user experience, offering insufficient comfort and failing to meet user needs. Utility Model Content

[0003] This utility model aims to at least partially solve one of the technical problems in related technologies. To this end, this utility model proposes an adjustment device and a seat.

[0004] In a first aspect, embodiments of the present invention provide an adjusting device, the adjusting device comprising:

[0005] Base;

[0006] The rear seat is located behind the base and is rotatably connected to the base;

[0007] A chassis is located above the base, and the chassis is rotatably connected to both the base and the rear seat.

[0008] A slide block is located above the chassis. The slide block is slidably connected to the chassis in the front-to-back direction. The slide block and the rear seat are connected by a swing arm, and the two ends of the swing arm are rotatably connected to the slide block and the rear seat, respectively.

[0009] A backrest is located behind the slide seat and is slidably connected to the rear seat in the vertical direction.

[0010] A spring sheet, the two ends of which are respectively connected to the backrest and the slide;

[0011] When the backrest is pressed down and slides, the rear seat and the chassis both rotate relative to the base, the slide slides forward, and the spring is deformed by pressure and provides an upward sliding bias force to the backrest.

[0012] According to some embodiments of the present invention, the adjustment device further includes a first shaft and a rotating block. The axis of the first shaft is in the left-right direction. The first shaft passes through the base and is rotatably connected to one end of the rotating block. The other end of the rotating block is rotatably connected to the chassis.

[0013] According to some embodiments of the present invention, the rotating block is provided with a first through hole and a second through hole, the first shaft passes through the first through hole and is rotatably connected to the rotating block, the front side of the chassis extends downward to form a first arm, and the first arm is hinged to the rotating block through the second through hole.

[0014] According to some embodiments of the present invention, the rear side of the chassis extends downward to form a second arm, the second arm tilts backward from top to bottom, and the lower end of the second arm is hinged to the rear seat.

[0015] According to some embodiments of the present invention, the adjustment device further includes a second shaft, the axis of the second shaft being in the left-right direction, the side wall of the base being provided with an arc-shaped through hole, the second shaft passing through the arc-shaped through hole, the second shaft passing through and rotatably connected to the rear seat, and the second shaft passing through and rotatably connected to the swing arm.

[0016] According to some embodiments of the present invention, the adjustment device further includes a third shaft, the axis of which is in the left-right direction, and the third shaft is simultaneously inserted through and rotatably connected to the base and the rear seat.

[0017] According to some embodiments of the present invention, the slide block is provided with an elongated through hole that extends in the front-rear direction, and the chassis is provided with a limiting post that inserts the upper end of the limiting post into the elongated through hole.

[0018] According to some embodiments of this utility model, the spring is L-shaped, one end of the spring is attached to the backrest and fixedly connected to the backrest, and the other end of the spring is rotatably connected to the slide. The adjustment device further includes a fixed base and a fourth shaft. The fixed base is fixedly installed on the upper surface of the slide, and the fourth shaft passes through and is rotatably connected to the fixed base. The axis of the fourth shaft is in the left-right direction. One end of the spring is fixedly connected to the fourth shaft and thus rotatably connected to the slide.

[0019] According to some embodiments of the present invention, the slide extends downward to form a connecting portion, one end of the swing arm is hinged to the connecting portion, and the other end of the swing arm is hinged to the rear seat.

[0020] The adjusting device according to the embodiments of this utility model has at least the following technical effects:

[0021] 1. When a person sits on the slide seat and leans back against the backrest, the backrest slides downwards under the pressure of their own weight. This causes the rear seat and chassis to rotate relative to the base. The spring clips deform under pressure, and the backrest rotates backwards with the rear seat. During this rotation, the rear seat, through the swing arm and spring clips, moves the slide seat forward, allowing the user's back to lean back while the buttocks move forward, preventing the center of gravity from shifting too far back and causing a fall. This also serves to adaptively adjust the sitting posture, improving user comfort. When the person is no longer leaning back, the backrest slides upwards relative to the rear seat under the action of the spring clips. This causes the rear seat and chassis to rotate relative to the base to return to their initial state. During this rotation, the rear seat, through the swing arm, moves the slide seat backwards to its initial position.

[0022] 2. This adjustment device can adaptively adjust the body's center of gravity and sitting posture, enhancing safety and improving user comfort.

[0023] Secondly, embodiments of the present invention also provide a seat, including an adjustment device according to the first aspect of the present invention described above.

[0024] The seat according to this utility model embodiment has at least the following technical effects: When a person sits on the sliding seat and leans back against the backrest, the backrest is pressed down and slides downwards under the person's own weight. Simultaneously, this causes the rear seat and chassis to rotate relative to the base. The spring plate is compressed and deformed, causing the backrest to rotate backwards with the rear seat. During this backward rotation, the rear seat, through the swing arm and spring plate, moves the sliding seat forward, allowing the person's back to lean back while the buttocks move forward, preventing the center of gravity from shifting too far back and causing a fall. This also serves to adaptively adjust the sitting posture, improving user comfort. When the person is no longer leaning against the backrest, the backrest slides upwards relative to the rear seat under the action of the spring plate, simultaneously causing the rear seat and chassis to rotate relative to the base to return to the initial state. During this rotation, the rear seat, through the swing arm, moves the sliding seat backwards to the initial position. This adjustment device can adaptively adjust the person's center of gravity and sitting posture, enhancing safety and improving user comfort.

[0025] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0026] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0027] Figure 1 This is a schematic diagram of the structure of the adjustment device according to some embodiments of the present invention;

[0028] Figure 2 This is an exploded view of the adjusting device according to some embodiments of the present invention;

[0029] Figure 3 This is an exploded view of a portion of the structure of the adjusting device according to some embodiments of the present invention;

[0030] Figure 4 This is a cross-sectional view of the adjustment device according to some embodiments of the present invention;

[0031] Figure 5 This is a schematic diagram of the adjustment device in its initial state according to some embodiments of the present invention;

[0032] Figure 6 This is a schematic diagram of the adjustment device in the backward tilting state according to some embodiments of the present invention;

[0033] Figure 7 This is a schematic diagram of the adjustment device in the backward tilting state according to some embodiments of the present invention;

[0034] Figure 8 This is a cross-sectional view of the adjustment device of some embodiments of the present invention in a rearward tilted position.

[0035] Icon labels:

[0036] Base 100; Rear seat 110; Swing arm 120; Spring piece 130; Backrest 140; Arc-shaped through hole 150;

[0037] Chassis 200; First arm 210; Second arm 220; Limiting post 230;

[0038] Slide 300; elongated through hole 310; fixed base 320; connecting part 330;

[0039] First shaft 410; second shaft 420; third shaft 430; fourth shaft 440; rotating block 450; first through hole 451; second through hole 452. Detailed Implementation

[0040] The embodiments of this utility model are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0041] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0042] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If "first" or "second" is used in the description, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0043] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0044] The embodiments of this utility model will be further described below with reference to the accompanying drawings.

[0045] According to some embodiments of this utility model, refer to Figures 1 to 8 The adjustment device includes a base 100, a rear seat 110, a chassis 200, a slide 300, a backrest 140, and a spring 130. The rear seat 110 is located behind the base 100 and is rotatably connected to it. The chassis 200 is located above the base 100 and is rotatably connected to both the base 100 and the rear seat 110. The slide 300 is located above the chassis 200 and is slidably connected to it in the front-to-back direction. The slide 300 and the rear seat 110 are connected by a swing arm 120, with both ends of the swing arm 120 rotatably connected to the slide 300 and the rear seat 110, respectively. The backrest 140 is located behind the slide 300 and is slidably connected to the rear seat 110 in the vertical direction. The two ends of the spring piece 130 are connected to the backrest 140 and the slide 300 respectively. When the backrest 140 is pressed and slides downward, the back seat 110 and the chassis 200 rotate relative to the base 100, the slide 300 slides forward, and the spring piece 130 is deformed by pressure and provides an upward sliding bias force to the backrest 140.

[0046] Understandably, referring to Figure 4 and Figure 5At this time, the adjustment device is in its initial state. When a person sits on the slide seat 300 and leans back on the backrest 140, under the weight of the person, the backrest 140 is subjected to pressure and slides downward relative to the rear seat 110, simultaneously causing the rear seat 110 and the chassis 200 to rotate relative to the base 100. That is, the backrest 140 and the rear seat 110... Figure 4 When the middle edge rotates clockwise, the spring 130 is compressed and deformed, and the backrest 140 rotates backward along with the rear seat 110. During the backward rotation, the rear seat 110 drives the slide 300 forward through the swing arm 120 and the spring 130, causing the back of the human body to lean backward while the buttocks move forward. Finally, the adjustment device is located at... Figures 6 to 8 The sliding seat 300 moves forward, causing the user's buttocks to move forward, thus preventing the center of gravity from shifting too far back and causing a fall. It also adaptively adjusts the sitting posture, improving user comfort. When the user is no longer leaning against the backrest 140, the backrest 140 slides upward relative to the rear seat 110 under the action of the spring 130. Simultaneously, it causes the rear seat 110 and the chassis 200 to rotate relative to the base 100 to return to their initial state. During this rotation, the rear seat 110, through the swing arm 120, moves the sliding seat 300 backward to its initial position, meaning the adjustment device is in the adjusted position. Figure 4 and Figure 5 The state.

[0047] This adjustment device can adaptively adjust the body's center of gravity and sitting posture, enhancing safety and improving user comfort.

[0048] Preferred, refer to Figure 4 and Figure 8 The backrest 140 is provided with a slider on the rear side. The slider is slidably connected to the back seat 110 in the up and down direction and can rotate relative to the back seat 110. When the backrest 140 slides in the up and down direction relative to the back seat 110, the backrest 140 also rotates relative to the back seat 110 to avoid them getting stuck together.

[0049] According to some embodiments of this utility model, refer to Figures 1 to 4 The adjustment device also includes a first shaft 410 and a rotating block 450. The axis of the first shaft 410 is oriented left-right. The first shaft 410 passes through the base 100 and is rotatably connected to one end of the rotating block 450. The other end of the rotating block 450 is rotatably connected to the chassis 200, thereby allowing the chassis 200 to rotate relative to the base 100. When the backrest 140 and the rear seat 110 rotate relative to the base 100, since the rear side of the chassis 200 is rotatably connected to the rear seat 110, the rear seat 110 can drive the chassis 200 to rotate. This facilitates the rear seat 110 to drive the slide 300 forward via the swing arm 120, preventing the chassis 200 and the slide 300 from jamming together and thus preventing the slide 300 from moving forward.

[0050] Preferred, refer to Figures 2 to 4 The rotating block 450 is provided with a first through hole 451 and a second through hole 452, both of which extend through the rotating block 450 in the left-right direction. The first through hole 451 is located below the second through hole 452. The first shaft 410 passes through the first through hole 451 and is rotatably connected to the rotating block 450. The front side of the chassis 200 extends downward to form a first arm 210, which is hinged to the rotating block 450 through the second through hole 452.

[0051] According to some embodiments of this utility model, refer to Figures 2 to 4 The rear side of the chassis 200 extends downward to form a second arm 220. The second arm 220 tilts backward from top to bottom. The upper end of the first arm 210 is fixedly connected to the chassis 200, and the lower end of the second arm 220 is hinged to the rear seat 110. When the rear seat 110 rotates, the rear seat 110 drives the chassis 200 to rotate through the second arm 220, so that the chassis 200 rotates around the base 100 through the first arm 210.

[0052] According to some embodiments of this utility model, refer to Figure 3 , Figure 4 , Figure 7 and Figure 8 The adjustment device also includes a second shaft 420, the axis of which is oriented left-right. An arc-shaped through hole 150 is provided on the side wall of the base 100. The second shaft 420 passes through the arc-shaped through hole 150 and is rotatably connected to the rear seat 110 and the swing arm 120. When the rear seat 110 rotates, it drives the second shaft 420 to move along the extension direction of the arc-shaped through hole 150, thereby driving the swing arm 120 and the slide 300 to move in the front-back direction.

[0053] According to some embodiments of this utility model, refer to Figure 3 , Figure 4 , Figure 7 and Figure 8 The adjustment device also includes a third shaft 430, the axis of which is oriented left and right. The third shaft 430 passes through and is rotatably connected to the base 100 and the rear seat 110. When the backrest 140 moves vertically relative to the rear seat 110, the rear seat 110 rotates relative to the base 100 around the axis of the third shaft 430. This causes the rear seat 110 to drive the second shaft 420 to reciprocate along the extension direction of the arc-shaped through hole 150, thereby driving the swing arm 120 and the slide 300 to move in the front-back direction.

[0054] According to some embodiments of this utility model, refer to Figure 1 and Figure 2The slide block 300 is provided with an elongated through hole 310, which extends in the front-to-back direction. The chassis 200 is provided with a limiting post 230, the upper end of which is inserted into the elongated through hole 310. The slide block 300 moves relative to the chassis 200 in the front-to-back direction, so that the limiting post 230 moves along the extension direction of the elongated through hole 310. The two ends of the elongated through hole 310 can limit the movement range of the limiting post 230.

[0055] According to some embodiments of this utility model, refer to Figures 1 to 3 The spring 130 is L-shaped. One end of the spring 130 is attached to the backrest 140 and is fixedly connected to the backrest 140 by bolts. The other end of the spring 130 is rotatably connected to the slide 300.

[0056] According to some embodiments of this utility model, refer to Figures 1 to 3 The adjustment device also includes a fixed base 320 and a fourth shaft 440. The fixed base 320 is fixedly installed on the upper end face of the slide 300. The fourth shaft 440 passes through and is rotatably connected to the fixed base 320. The axis of the fourth shaft 440 is in the left-right direction. One end of the spring piece 130 is fixedly connected to the fourth shaft 440, thereby rotatably connecting it to the slide 300. When the backrest 140 reclines and moves downward relative to the rear seat 110, the spring piece 130 is compressed. The spring piece 130 drives the fourth shaft 440 to rotate and applies a forward force to the slide 300, thus pushing the slide 300 forward. When the human body leaves the adjustment device, i.e., when the backrest 140 is no longer under backward pressure, the spring piece 130 releases potential energy, thereby pushing the backrest 140 upward, causing the backrest 140 to move upward relative to the rear seat 110. (Refer to...) Figure 2 and Figure 4 The slide 300 extends downward to form a connecting part 330. One end of the swing arm 120 is hinged to the connecting part 330 so as to be rotatably connected to the slide 300. The other end of the swing arm 120 is hinged to the rear seat 110.

[0057] In this specification, the reference to the term "some embodiments" means that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0058] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. An adjusting device, characterized in that The application relates to a chair, which comprises: a base (100); a backrest (110) located behind the base (100), the backrest (110) being rotationally connected with the base (100); a bottom plate (200) located above the base (100), the bottom plate (200) being rotationally connected with the base (100) and the backrest (110) respectively; a sliding base (300) located above the bottom plate (200), the sliding base (300) being slidingly connected with the bottom plate (200) in the front-back direction, the sliding base (300) and the backrest (110) being connected through a swing arm (120), the swing arm (120) being rotationally connected with the sliding base (300) and the backrest (110) at two ends respectively; a backrest (140) located behind the sliding base (300), the backrest (140) being slidingly connected with the backrest (110) in the up-down direction; a spring plate (130) connected with the backrest (140) and the sliding base (300) at two ends respectively; when the backrest (140) is pressed to slide downward, the backrest (110) and the bottom plate (200) are rotated relative to the base (100), the sliding base (300) slides forward, and the spring plate (130) is deformed under pressure and provides a biasing force for the backrest (140) to slide upward.

2. The adjustment device of claim 1, wherein The adjusting device further comprises a first shaft (410) and a rotating block (450), the first shaft (410) is arranged in the left-right direction, the first shaft (410) is arranged in the base (100), the first shaft (410) is arranged in and rotationally connected with one end of the rotating block (450), and the other end of the rotating block (450) is rotationally connected with the bottom plate (200).

3. The adjustment device of claim 2, wherein, The rotating block (450) is provided with a first through hole (451) and a second through hole (452), the first shaft (410) passes through the first through hole (451) and is rotationally connected with the rotating block (450), and the front side of the bottom plate (200) downwardly extends to form a first arm (210), the first arm (210) is hinged with the rotating block (450) through the second through hole (452).

4. The adjustment device of claim 1, wherein The rear side of the bottom plate (200) downwardly extends to form a second arm (220), the second arm (220) is inclined from top to bottom and rearward, and the lower end of the second arm (220) is hinged with the backrest (110).

5. The adjustment device of claim 1, wherein The adjusting device further comprises a second shaft (420), the second shaft (420) is arranged in the left-right direction, the sidewall of the base (100) is provided with an arc-shaped through hole (150), the second shaft (420) is arranged in the arc-shaped through hole (150), the second shaft (420) is arranged in and rotationally connected with the backrest (110), and the second shaft (420) is arranged in and rotationally connected with the swing arm (120).

6. The adjustment device of claim 1, wherein The adjusting device further comprises a third shaft (430), the third shaft (430) is arranged in the left-right direction, and the third shaft (430) is arranged in and rotationally connected with the base (100) and the backrest (110) simultaneously.

7. The adjustment device of claim 1, wherein The slide (300) is provided with a long hole (310) extending in the front-rear direction, and the chassis (200) is provided with a limiting post (230) with an upper end inserted into the long hole (310).

8. The adjustment device of claim 1, wherein, The elastic sheet (130) is L-shaped, one end of the elastic sheet (130) is attached to the backrest (140) and fixedly connected with the backrest (140), and the other end of the elastic sheet (130) is rotatably connected with the slide (300); the adjusting device further comprises a fixing seat (320) and a fourth shaft (440), the fixing seat (320) is fixedly installed on the upper end surface of the slide (300), the fourth shaft (440) is rotatably connected with the fixing seat (320), the axis direction of the fourth shaft (440) is the left-right direction, and one end of the elastic sheet (130) is fixedly connected with the fourth shaft (440) so as to be rotatably connected with the slide (300).

9. The adjustment device of claim 1, wherein, The slide (300) extends downward to form a connecting portion (330), one end of the swing arm (120) is hingedly connected with the connecting portion (330), and the other end of the swing arm (120) is hingedly connected with the backrest (110).

10. A seat, characterized by The adjusting device comprises the adjusting device as claimed in any one of claims 1 to 9.

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