Seat with adaptive seat adjusting structure

Abstract

The utility model discloses a seat with an adaptive seat surface adjusting structure. The seat comprises a seat chassis, a seat surface main body and a position locking assembly, and the seat surface main body is connected to the seat chassis in a sliding manner. The position locking assembly comprises a pulling fastener, a connecting rope, a reset spring and a locking piece. And the pulling fastener is rotationally connected to the chair surface main body. The locking piece is mounted on the connecting part of the chair surface main body, is connected with the pulling and buckling piece through a connecting rope, and can be pulled by the connecting rope to move outwards. According to the utility model, the seat surface main body capable of sliding back and forth is arranged on the seat chassis. Meanwhile, a position locking assembly is arranged on the chair surface main body and used for locking the position of the chair surface main body subjected to sliding adjustment relative to the chair chassis, so that the position adjustment of the chair surface relative to the chair back is realized, the user is fully supported by the waist support, and the legs of the user are prevented from being suspended or bent; and the comfort level of the leg area of the user is improved.

Description

Technical Field

[0001] This utility model belongs to the field of office chair technology, specifically relating to a chair with an adaptive seat adjustment structure. Background Technology

[0002] An office chair is a chair with a backrest that people sit on when working at a desk. For relatively high-end office chairs, they generally provide support for the buttocks, feet, back, and hands. The armrests provide support for the hands, helping to maintain a more comfortable posture and thus improve the comfort of sitting.

[0003] Chinese Patent Publication No. CN213247888U discloses an office chair, which includes: a chair body, which includes a backrest, and the backrest has an adjustment groove opened in the vertical direction; an adjustment block, which is slidably disposed in the adjustment groove; a lumbar support, which is installed on the adjustment block and is disposed opposite to the front or back of the backrest; and an adjustment mechanism, which can drive the adjustment block to slide along the adjustment groove; in this utility model, the chair body includes a backrest, the backrest has an adjustment groove, the adjustment block is slidably disposed in the adjustment groove, and the lumbar support is installed on the adjustment block.

[0004] The aforementioned patent incorporates an adjustable lumbar support to meet the needs of different users. The seat itself is a one-piece structure, with a fixed relative position between the seat surface and the seat base. However, since leg lengths vary among people of different heights, when the seat surface is deep, shorter users or those with shorter legs will find a gap between themselves and the lumbar support when sitting in a normal posture, making it difficult for the lumbar support to provide adequate support. To achieve sufficient lumbar support, users would need to sit towards the backrest, which can easily cause discomfort due to their legs being unsupported. Utility Model Content

[0005] To overcome the shortcomings of existing technology, this utility model provides a seat with an adaptive seat adjustment structure to solve the technical problem that people of different heights have different seat depth requirements when receiving sufficient lumbar support.

[0006] To achieve the above objectives, the specific technical solution of this utility model is as follows:

[0007] A seat with an adaptive seat adjustment structure includes a seat chassis, a seat body, and a position locking assembly. The seat body is slidably connected to the seat chassis.

[0008] The position locking assembly includes a lever, a connecting rope, a return spring, and a locking member. The lever is rotatably connected to the seat body. The locking member is mounted on the connecting part of the seat body and is connected to the lever via a connecting rope, allowing it to move outward when pulled by the rope. The return spring is mounted on one side of the locking member and is used to push the locking member inward.

[0009] The locking component has a snap-fit ​​part. The seat chassis has multiple locking slots that mate with the snap-fit ​​part. The snap-fit ​​part can engage with the locking slot when the locking component moves inward and disengage from the locking slot when it moves outward.

[0010] Furthermore, the locking element is rotatably connected to the seat body. The snap-fit ​​portion is located at the end of the locking element.

[0011] Furthermore, the seat body has a clearance groove that mates with the locking part of the locking component. The locking part passes through the clearance groove and is embedded in the locking groove of the seat chassis. The width of the clearance groove is greater than the width of the locking part.

[0012] Furthermore, a tension spring is provided between the seat body and the seat chassis.

[0013] Furthermore, the main body of the chair seat is divided into a central connecting part and an outer frame part. The connecting part is slidably engaged with the seat chassis. The latching fastener is rotatably connected to the outer frame part.

[0014] Furthermore, each connecting part of the seat body is provided with a clearance groove. A connector is installed within the clearance groove. The bottom of the connector passes through the clearance groove and is fixed to the seat chassis with screws.

[0015] Furthermore, a guide groove is formed on the opening of the clearance groove. The connector is divided into an upper guide portion and a lower mounting portion. The mounting portion passes through the clearance groove and is fixed to the seat chassis with screws. The two sides of the guide portion abut against the side walls of the guide groove.

[0016] Compared with the prior art, the present invention has the following advantages:

[0017] This invention features a seat surface that can slide back and forth on the seat chassis. A position locking component is also provided on the seat surface to lock the position of the seat surface relative to the seat chassis after sliding adjustment. This allows for adjustment of the seat surface relative to the backrest, ensuring sufficient lumbar support for the user while preventing the user's legs from being suspended or bent, thus improving the comfort of the user's leg area. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the position locking component in this utility model. Figure 1 (Enlarged view of part A in the middle)

[0020] Figure 3 This is a schematic diagram showing the relative positions of the locking component and the main body of the chair seat in this utility model;

[0021] Figure 4 This is a schematic diagram of the structure of the locking component and the seat chassis in the locked state of this utility model.

[0022] Reference numerals: 1. Seat chassis; 2. Seat body; 2-1. Connecting part; 2-2. Outer frame; 3. Position locking assembly; 4. Buckle; 5. Connecting rope; 6. Return spring; 7. Locking part; 8. Snap-fit ​​part; 9. Clearance groove; 10. Tension spring; 11. Clearance slide; 12. Connecting part. Detailed Implementation

[0023] In the description of this utility model, it should be understood that the terms "one end", "the other end", "outer side", "upper side", "inner side", "horizontal", "coaxial", "center", "end", "length", "outer end", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the 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.

[0024] The present invention will be further described below with reference to the accompanying drawings.

[0025] like Figure 1 and 2 As shown, a seat with an adaptive seat adjustment structure includes a seat base 1, a seat body 2, and a position locking assembly 3. The seat body 2 is slidably connected to the seat base 1 and can slide outwards or inwards relative to the seat base 1 to accommodate users of different heights and leg lengths. The position locking assembly 3 is mounted on the seat body 2 and has a locking part 8 rotatably disposed at its bottom. The seat base 1 has multiple locking slots that cooperate with the locking parts 8. When the seat body 2 slides to a designated position, the locking part 8 in the position locking assembly 3 engages with the corresponding locking slot, thereby locking the seat body 2 in place.

[0026] In this embodiment, the main body 2 of the seat is divided into a central connecting portion 2-1 and an outer frame portion 2-2. The connecting portion 2-1 is slidably fitted with the seat base 1. The outer frame portion 2-2 is lined with a mesh fabric (not shown in the figure).

[0027] Specifically, such as Figure 2As shown, the position locking assembly 3 includes a lever 4, a connecting rope 5, a return spring 6, and a locking member 7. The lever 4 is rotatably connected to the outer frame 2-2 of the seat body 2 and can pull the connecting rope 5 outwards during rotation. The locking member 7 is mounted on the connecting portion 2-1 of the seat body 2, and its end can move along a side perpendicular to the sliding direction of the seat body 2 under the pull of the connecting rope 5. A snap-fit ​​portion 8 is provided on the bottom surface of the locking member 7.

[0028] The reset spring 6 is installed on one side of the locking member 7, and its outer end abuts against the connecting part 2-1 of the seat body 2. When the locking member 7 releases the tension of the connecting rope 5, it can push the snap-fit ​​part 8 on the locking member 7 into the locking groove, thereby realizing the position locking of the seat body 2.

[0029] like Figure 3 and 4 As shown, in this embodiment, the locking member 7 is rotatably connected to the connecting portion 2-1 of the seat body 2. The connecting portion 2-1 of the seat body 2 has a clearance groove 9 that mates with the locking member 7's engaging portion 8. Initially, the engaging portion 8 passes through the clearance groove 9 and is embedded in the locking groove of the seat base 1. The width of the clearance groove 9 is greater than the width of the engaging portion 8, allowing the locking member 7's engaging portion 8 to smoothly disengage from the locking groove on the seat base 1 under the pull of the connecting rope 5.

[0030] In this embodiment, a tension spring 10 is provided between the seat body 2 and the seat base 1. The seat body 2 has a first connecting portion 2-1 that mates with one end of the tension spring 10. The seat base 1 has a second connecting portion 2-1 that mates with the other end of the tension spring 10.

[0031] Initially, the tension spring 10 is in a contracted state, and the seat base 1 slides downward and inward to its limit position under the pull of the tension spring 10. When the locking part 8 of the locking member 7 disengages from the locking groove, the user can slide the seat body 2 outward as needed, and the tension spring 10 stretches and deforms. When the user subsequently adjusts the position of the seat body 2, the seat body 2 can return to its original position under the pull of the tension spring 10.

[0032] like Figure 2 As shown, both connecting parts 2-1 of the seat body 2 are provided with clearance grooves 11. A connector 12 is provided in the clearance groove 11. The bottom of the connector 12 passes through the clearance groove 11 and is fixed to the seat chassis 1 by screws, thereby realizing the sliding fit between the seat body 2 and the seat chassis 1.

[0033] In this embodiment, a guide groove is provided on the opening of the clearance groove 11. The connector 12 is divided into an upper guide portion and a lower mounting portion. The mounting portion passes through the clearance groove 11 and is fixed to the seat base 1 by screws. The two sides of the guide portion abut against the side walls of the guide groove to ensure the stability of the seat body 2 during sliding.

[0034] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A seat with an adaptive seat adjustment structure, comprising a seat chassis (1), a seat body (2), and a position locking assembly (3), characterized in that: The seat body (2) is slidably connected to the seat chassis (1); The position locking assembly (3) includes a buckle (4), a connecting rope (5), a return spring (6), and a locking member (7); the buckle (4) is rotatably connected to the seat body (2); the locking member (7) is installed on the connecting part (2-1) of the seat body (2) and is connected to the buckle (4) by the connecting rope (5), and can move outward under the pull of the connecting rope (5); the return spring (6) is installed on one side of the locking member (7) and is used to push the locking member (7) inward; The locking member (7) is provided with a snap-fit ​​part (8); the seat chassis (1) is provided with a plurality of locking grooves that cooperate with the snap-fit ​​part (8); the snap-fit ​​part (8) can be inserted into the locking groove when the locking member (7) moves inward and disengage from the locking groove when it moves outward.

2. A seat with an adaptive seat adjustment structure according to claim 1, characterized in that: The locking member (7) is rotatably connected to the seat body (2), and the snap-fit ​​part (8) is provided at the end of the locking member (7).

3. A seat with an adaptive seat adjustment structure according to claim 1, characterized in that: The seat body (2) has a clearance groove (9) that cooperates with the locking part (8) of the locking member (7); the locking part (8) passes through the clearance groove (9) and is embedded in the locking groove of the seat chassis (1); the width of the clearance groove (9) is greater than the width of the locking part (8).

4. A seat with an adaptive seat adjustment structure according to claim 1, characterized in that: A tension spring (10) is provided between the seat body (2) and the seat chassis (1).

5. A seat with an adaptive seat adjustment structure according to claim 1, characterized in that: The main body of the seat (2) is divided into a middle connecting part (2-1) and an outer frame part (2-2); the connecting part (2-1) is slidably engaged with the seat chassis (1); the buckle (4) is rotatably connected to the outer frame part (2-2).

6. A seat with an adaptive seat adjustment structure according to claim 5, characterized in that: The connecting part (2-1) of the main body of the seat (2) is provided with a clearance groove (11); a connector (12) is provided in the clearance groove (11); the bottom of the connector (12) passes through the clearance groove (11) and is fixed to the seat chassis (1) by screws.

7. A seat with an adaptive seat adjustment structure according to claim 6, characterized in that: The relief slide (11) has a guide groove on its opening; the connector (12) is divided into an upper guide part and a lower mounting part; the mounting part passes through the relief slide (11) and is fixed to the seat chassis (1) by screws; the two sides of the guide part abut against the two side walls of the guide groove.

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