A home chair with variable length

Abstract

This utility model discloses a variable-length household chair, including a fixed seat plate (1), a plurality of fixed chair legs (2) at the bottom of the fixed seat plate (1), a fixed backrest (3) at the rear side of the fixed seat plate (1), a rotating seat plate (4) connected to at least one side of the fixed seat plate (1) in the width direction, at least one rotating chair leg (5) connected to the bottom of the rotating seat plate (4), a rotating backrest (6) connected to the rear side of the rotating seat plate (4), and a lockable mechanism that can be opened between the rotating backrest (6) and the fixed backrest (3); the locking mechanism includes a pin (7), one end of the pin (7) entering the rotating seat plate (4), the other end of the pin (7) entering the fixed seat plate (1), and a slider (8) connected to the pin (7) at the rear side of the fixed seat plate (1). This utility model has the advantages of variable length and safe use.

Description

Technical Field

[0001] This utility model belongs to the field of household seating, and particularly relates to a household seating with variable length. Background Technology

[0002] In cities with high housing prices, maximizing indoor space is crucial. Almost every household has multiple chairs, each occupying a portion of the room. To accommodate occasional guests, the number of chairs often exceeds the needs of the regular household, causing unnecessary crowding. For example, adjustable-length dining tables exist. In normal use, they are set to a shorter length to reduce space, accommodating four chairs for the regular family. When guests are present, the table is adjusted to a longer length, requiring six chairs, with the extra two taking up additional space. Therefore, it is necessary to develop a variable-length home chair. When fewer seats are needed, it should be smaller to minimize space usage; when more seats are needed, it should be longer to accommodate more people. Utility Model Content

[0003] The purpose of this invention is to provide a household chair with a variable length. This invention has the advantages of variable length and safe use.

[0004] The technical solution of this utility model is as follows: A household chair with variable length includes a fixed seat plate, a plurality of fixed chair legs at the bottom of the fixed seat plate, a fixed backrest at the rear of the fixed seat plate, a rotating seat plate connected to at least one side of the fixed seat plate in the width direction, at least one rotating chair leg connected to the bottom of the rotating seat plate, a rotating backrest connected to the rear of the rotating seat plate, and a locking mechanism that can be opened is provided between the rotating backrest and the fixed backrest.

[0005] In the aforementioned variable-length household chair, rotating seat plates are connected to both sides of the fixed seat plate in the width direction.

[0006] In the aforementioned variable-length home seat, the locking mechanism includes a pin, one end of which enters a rotating seat plate, and the other end of which enters a fixed seat plate. A slider for connecting the pin is provided on the rear side of the fixed seat plate.

[0007] In the aforementioned variable-length home chair, the rear side of the fixed seat plate is provided with a groove that mates with the slider.

[0008] In the aforementioned variable-length home seat, the rear side of the slider is provided with anti-slip texture.

[0009] In the aforementioned variable-length home chair, the bottom surface of the rotating seat plate is connected to the fixed seat plate via a first hinge, the rear side of the rotating backrest is aligned with the rear side of the rotating seat plate, the rear side of the rotating seat plate is provided with a mounting groove, the bottom surface of the mounting groove is aligned with the front side of the rotating backrest, and the bottom surface of the rotating backrest is connected to the bottom surface of the mounting groove via a second hinge.

[0010] In the aforementioned variable-length home chair, a first connecting rod is provided on the wide outward side of the rotating backrest. One end of the first connecting rod is hinged to the rotating backrest, and the other end of the first connecting rod is hinged to a second connecting rod. The second connecting rod is hinged to the rotating seat plate. The hinge axis between the first connecting rod and the rotating backrest, the hinge axis between the first connecting rod and the second connecting rod, and the hinge axis between the second connecting rod and the rotating seat plate are located on the same plane.

[0011] In the aforementioned variable-length home chair, the bottom of the rotating seat plate is connected to two rotating chair legs. The rotating chair legs are connected to the bottom surface of the rotating seat plate via a third hinge. A third connecting rod is provided on one side of the rotating chair leg. One end of the third connecting rod is hinged to the rotating chair leg, and the other end of the third connecting rod is hinged to a fourth connecting rod. The fourth connecting rod is hinged to the bottom surface of the rotating seat plate. The hinge axis between the third connecting rod and the rotating chair leg, the hinge axis between the third connecting rod and the fourth connecting rod, and the hinge axis between the fourth connecting rod and the rotating seat plate are located on the same plane.

[0012] Compared with existing technologies, this utility model features a fixed seat plate with a fixed backrest on its rear side, forming a fixed seat. A rotating seat plate is located on one side of the fixed seat plate, and a rotating backrest is located on the rear side of the rotating seat plate, forming a foldable seat. This provides at least two seats for at least two people, meeting the needs of families with more guests. When there are no guests, the fixed seat remains unchanged, while the side seats fold down, reducing the seat length and minimizing the space occupied in the room. Furthermore, through further structural improvements, connecting rods are installed between the rotating seat plate and the rotating chair legs, and between the rotating seat plate and the rotating backrest; a pin is installed between the rotating backrest and the fixed backrest, increasing the structural stability of the seat in its unfolded state and enhancing safety. Therefore, this utility model has the advantages of variable length and safe use. Attached Figure Description

[0013] Figure 1 This is a perspective view of the present invention from below.

[0014] Figure 2 This is a top-down perspective view of the present invention.

[0015] Figure 3 A top view of the fixed base plate and the rotating base plate at the pin.

[0016] Figure 4 This is a three-dimensional schematic diagram of the present invention in its folded state.

[0017] The markings in the attached diagram are as follows: 1-Fixed seat plate, 2-Fixed chair leg, 3-Fixed backrest, 4-Rotating seat plate, 5-Rotating chair leg, 6-Rotating backrest, 7-Pin, 8-Slider, 9-Slide groove, 10-Anti-slip texture, 11-First hinge, 12-Mounting groove, 13-Second hinge, 14-First connecting rod, 15-Second connecting rod, 16-Third hinge, 17-Third connecting rod, 18-Fourth connecting rod. Detailed Implementation

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments, but this should not be construed as limiting the present invention.

[0019] Example: A home chair with variable length, such as Figure 1 As shown, the chair includes a fixed seat plate 1, four fixed chair legs 2 at the bottom of the fixed seat plate 1, a fixed backrest 3 at the rear of the fixed seat plate 1, rotating seat plates 4 connected to both sides of the fixed seat plate 1 in the width direction, two rotating chair legs 5 connected to the bottom of the rotating seat plate 4, a rotating backrest 6 connected to the rear of the rotating seat plate 4, and a locking mechanism that can be opened is provided between the rotating backrest 6 and the fixed backrest 3.

[0020] The locking mechanism includes a pin 7, one end of which enters the rotating base plate 4, and the other end of which enters the fixed base plate 1. A slider 8 connected to the pin 7 is provided on the rear side of the fixed base plate 1.

[0021] The rear side of the fixed base plate 1 is provided with a sliding groove 9 that cooperates with the slider 8, and the rear side of the slider 8 is provided with anti-slip texture 10.

[0022] The bottom surface of the rotating base plate 4 is connected to the fixed base plate 1 via the first hinge 11. The rear side of the rotating back plate 6 is aligned with the rear side of the rotating base plate 4. The rear side of the rotating base plate 4 is provided with a mounting groove 12. The bottom surface of the mounting groove 12 is aligned with the front side of the rotating back plate 6. The bottom surface of the rotating back plate 6 is connected to the bottom surface of the mounting groove 12 via the second hinge 13.

[0023] The rotating support plate 6 has a first connecting rod 14 on its wide outer side. One end of the first connecting rod 14 is hinged to the rotating support plate 6, and the other end of the first connecting rod 14 is hinged to a second connecting rod 15. The second connecting rod 15 is hinged to the rotating seat plate 4. The hinge axes of the first connecting rod 14 and the rotating support plate 6, the first connecting rod 14 and the second connecting rod 15, and the second connecting rod 15 and the rotating seat plate 4 are located on the same plane, so that the rotating seat plate 4 and the rotating support plate 6 form a self-locking mechanism, resulting in good structural stability.

[0024] The rotating chair leg 5 is connected to the bottom surface of the rotating seat plate 4 via a third hinge 16. A third connecting rod 17 is located on one side of the rotating chair leg 5. One end of the third connecting rod 17 is hinged to the rotating chair leg 5, and the other end is hinged to a fourth connecting rod 18. The fourth connecting rod 18 is hinged to the bottom surface of the rotating seat plate 4. The hinge axes of the third connecting rod 17 and the rotating chair leg 5, the third connecting rod 17 and the fourth connecting rod 18, and the fourth connecting rod 18 and the rotating seat plate 4 are all located on the same plane, creating a self-locking mechanism between the rotating seat plate 4 and the rotating chair leg 5, resulting in good structural stability. The hinge axes of the two third connecting rods 17 and the fourth connecting rod 18 located below the same rotating seat plate 4 are interconnected.

[0025] Folding method: includes the following steps,

[0026] (1) Move the pin 7 to the side of the fixed plate 3 by the slider 8. Separate the pin 7 from the rotating plate 6. Slightly press down the hinge of the first link 14 and the second link 15 to release the self-locking between the rotating plate 6 and the rotating seat plate 4. Then rotate the rotating plate 6 to the upper side of the rotating seat plate 4.

[0027] (2) Slightly pull up the hinge of the third link 17 and the fourth link 18 to release the self-locking between the rotating chair leg 5 and the rotating seat plate 4, and then rotate the rotating chair leg 5 to the underside of the rotating seat plate 4.

[0028] (3) Lower the rotating seat plate 4. Under the action of gravity, the rotating seat plate 4 remains vertical and fits against the wide side of the fixed seat plate 1, as shown in the final state. Figure 4 As shown.

[0029] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", etc., indicate the orientation or positional relationship based on the orientation 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.

Claims

1. A home chair with variable length, characterized in that: The fixed seat plate (1) is provided with a plurality of fixed chair legs (2) at the bottom of the fixed seat plate (1), a fixed backrest (3) is provided on the rear side of the fixed seat plate (1), a rotating seat plate (4) is connected to at least one side of the width of the fixed seat plate (1), at least one rotating chair leg (5) is connected to the bottom of the rotating seat plate (4), a rotating backrest (6) is connected to the rear side of the rotating seat plate (4), and a locking mechanism that can be opened is provided between the rotating backrest (6) and the fixed backrest (3).

2. The variable-length household chair according to claim 1, characterized in that: Rotating seat plates (4) are connected to both sides of the fixed seat plate (1) in the width direction.

3. The variable-length household chair according to claim 1, characterized in that: The locking mechanism includes a pin (7), one end of which enters the rotating seat plate (4), and the other end of which enters the fixed seat plate (1). The rear side of the fixed seat plate (1) is provided with a slider (8) that connects to the pin (7).

4. The variable-length household chair according to claim 3, characterized in that: The rear side of the fixed base plate (1) is provided with a groove (9) that cooperates with the slider (8).

5. The variable-length household chair according to claim 3, characterized in that: The slider (8) has anti-slip texture (10) on its rear side.

6. The variable-length household chair according to claim 1, characterized in that: The bottom surface of the rotating seat plate (4) is connected to the fixed seat plate (1) via the first hinge (11). The rear side of the rotating back plate (6) is aligned with the rear side of the rotating seat plate (4). The rear side of the rotating seat plate (4) is provided with a mounting groove (12). The bottom surface of the mounting groove (12) is aligned with the front side of the rotating back plate (6). The bottom surface of the rotating back plate (6) is connected to the bottom surface of the mounting groove (12) via the second hinge (13).

7. The variable-length household chair according to claim 1, characterized in that: The rotating support plate (6) has a first connecting rod (14) on its wide outer side. One end of the first connecting rod (14) is hinged to the rotating support plate (6), and the other end of the first connecting rod (14) is hinged to a second connecting rod (15). The second connecting rod (15) is hinged to the rotating seat plate (4). The hinge axis between the first connecting rod (14) and the rotating support plate (6), the hinge axis between the first connecting rod (14) and the second connecting rod (15), and the hinge axis between the second connecting rod (15) and the rotating seat plate (4) are located on the same plane.

8. The variable-length household chair according to claim 1, characterized in that: The bottom of the rotating seat plate (4) is connected to two rotating chair legs (5). The rotating chair legs (5) are connected to the bottom surface of the rotating seat plate (4) through a third hinge (16). A third connecting rod (17) is provided on one side of the rotating chair leg (5). One end of the third connecting rod (17) is hinged to the rotating chair leg (5), and the other end of the third connecting rod (17) is hinged to a fourth connecting rod (18). The fourth connecting rod (18) is hinged to the bottom surface of the rotating seat plate (4). The hinge axis between the third connecting rod (17) and the rotating chair leg (5), the hinge axis between the third connecting rod (17) and the fourth connecting rod (18), and the hinge axis between the fourth connecting rod (18) and the rotating seat plate (4) are located on the same plane.

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