Combined table and chair

Abstract

The application provides a combined desk and chair, and belongs to the technical field of student tools. The combined desk and chair solves the technical problem of large space occupation and inconvenient use of the existing combined desk and chair. The combined desk and chair comprises a desk and a chair connected as a whole, the chair comprises a chair frame, a seat plate and a backrest support capable of being laid back relative to the chair frame, the chair frame is provided with a seat plate support frame arranged in the front-back direction, the bottom of the seat plate is provided with sliding members close to the left and right sides respectively, the interval between the two sliding members is adjustable, the seat plate is connected to the seat plate support frame through the sliding members and is capable of freely sliding in the front-back direction, the chair further comprises two connecting pieces, the connecting pieces are provided with connecting portions and hinged portions, the two connecting portions are fixed to the left and right sides of the backrest support respectively, the hinged portions are located outside the corresponding connecting portions, the lower end of the hinged portion extends to the lower side of the backrest support and is hinged to the seat plate support frame, and the hinged portions form a space for the seat plate to pass through. The application occupies smaller area and is more stable and convenient to use.

Description

Technical Field

[0001] This invention belongs to the field of student equipment technology and relates to a combination table and chair. Background Technology

[0002] In existing integrated desk and chair products, the positions of the chair and desk are relatively fixed. This integrated combination desk and chair is more stable for both studying and sleeping.

[0003] For example, the applicant previously developed a leisure table and chair with application publication number CN113768292A, which includes a base shared by the table and chair. A set of table support legs is set on the front of the base, and a chair support leg is set on the back of the base. A table board is set on the table support legs, and a chair board is set on the chair support legs. An adjustable backrest is set at the back of the chair board. There are at least two table support legs on the left and right. A reclining board is set between the two table support legs. The reclining board, chair board, and backrest form a leisure bed.

[0004] The aforementioned products can be configured in different ways by adjusting the backrest to meet the needs of students during study and nap time. However, these products require a passageway between the seat and the desk for students to move around, resulting in a larger gap between the seat and desk. This means each product occupies a larger area, limiting the number of integrated desks and chairs that can be placed in a limited classroom space, often making it difficult to meet the number of students. Furthermore, since the seat is directly connected to the backrest, students need to place their feet in front of the seat to stand up properly, making it inconvenient and difficult to use. Therefore, those skilled in the art can consider the following: 1. Since the size of the reserved space affects the front-to-back dimensions of the product, design the distance between the seat and desk to be closer, reducing the size of the passageway, or reducing the size of the desk and seat themselves, thereby reducing the overall size of the product; 2. To facilitate standing up, install a baffle structure under the seat to guide the user's feet to a designated area for easy standing, thus improving convenience. Summary of the Invention

[0005] In view of the above-mentioned problems of existing technology, the present invention provides a combination table and chair. The technical problem to be solved by the present invention is that existing combination table and chair products occupy a lot of space and are not convenient to use.

[0006] The objective of this invention can be achieved through the following technical solutions:

[0007] A combination desk and chair set includes a desk and chair integrated together. The chair includes a chair frame, a seat, and a backrest support that can be reclined relative to the chair frame. The chair frame has a seat support frame arranged in a front-to-back direction. The bottom of the seat is provided with sliding members near the left and right sides, and the distance between the two sliding members is adjustable. The seat is connected to the seat support frame via the sliding members and can slide freely back and forth. The chair also includes two connecting pieces, each having a connecting portion and a hinge portion. The two connecting portions are respectively fixed to the left and right sides of the backrest support frame. The hinge portion is located outside the corresponding connecting portion, and its lower end extends out of the lower side of the backrest support frame and is hinged to the seat support frame. A clearance space is formed between the two hinge portions for the seat to pass through.

[0008] The desk is used to place books and stationery, while the chair is for the user to sit on. The integrated design of the desk and chair enhances the overall structural stability. The chair frame provides support for the user's buttocks, while the backrest supports the user's back, allowing for reclining. The chair features a front-to-back seat support frame, with adjustable sliding members on the bottom of the left and right sides of the seat. These sliding members connect to the seat support frame and slide freely back and forth, facilitating stable seat movement. The adjustable spacing of the sliding members during assembly with the seat support frame also helps overcome assembly errors. During normal work or study, the user sits on the forward-extending seat. The user's weight helps maintain a stable position by pressing the seat against the support frame with the sliding members. The front edge of the seat is closer to the desk, maximizing the space between the support frame and the desk for the user to move away from. When the user gets up, their legs naturally swing backward as they straighten, pushing the seat, now free from load, backward. The space initially occupied is used to make way for the user to easily leave the seat, making it convenient and effectively reducing the product's front-to-back dimensions. When the user wants to return to the seat, they can simply slide the seat forward to reset it for normal seating, making operation simple. Two connecting pieces are positioned on the left and right sides of the backrest support, with the connecting part of the piece fixed to the backrest support and the hinged part hinged to the seat support frame. A clearance space is created between the hinged parts for the seat to move backward. This allows the lower end of the connecting piece to extend beyond the backrest support... Eliminating the influence of dimensional errors between the backrest support and the seat position facilitates assembly. In addition, even when the backrest is folded down, there is still enough space between the hinges at the bottom for the seat to pass through. This allows users to get up from the chair while lying down, even if their feet are below the sliding range of the seat, their legs can still smoothly slide the seat backward during the process of getting up. In other words, the seat can slide backward to accommodate the foot position during the process of getting up, so users do not need to deliberately adjust their standing position or straighten the backrest to get out of the seat more conveniently, making it more convenient and comfortable to use.

[0009] In the aforementioned combination table and chairs, the lower end of the hinge is bent forward and hinged to the seat support frame. This design allows for clearer observation of the mating position when the hinge and seat support frame are engaged, facilitating assembly.

[0010] In the aforementioned combination table and chairs, the connecting piece has an outwardly inclined, strip-shaped transition section, with both ends of the transition section connected to the connecting part and the hinge part, respectively. This design ensures that the transition section connects to both the connecting part and the hinge part at obtuse angles, thus guaranteeing the overall structural strength of the connecting piece.

[0011] In the aforementioned combination table and chair, the bottom surface of the seat has a protruding positioning part, and the bottom surface of the positioning part has an oblong adjustment hole. The sliding member is fixed to the positioning part by bolts that pass through the sliding member and the adjustment hole in sequence. This allows the bolts to be loosened, enabling movement along the adjustment hole and thus driving the entire sliding member to move left and right, facilitating the adjustment of the distance between the two sliding members for convenient assembly. Furthermore, the protruding positioning part creates a space between the top of the sliding member and the bottom surface of the seat, allowing the user to insert their fingers into the space on either side when resetting the seat forward, thus preventing finger injury.

[0012] In the aforementioned combination table and chairs, the positioning part is U-shaped, and a nut is embedded within the positioning part, which is circumferentially positioned against the inner side wall of the positioning part. The small end of the bolt is screwed into the nut. In this way, the side of the positioning part can be open to accommodate the nut. The circumferential positioning of the nut ensures smooth engagement with the rotating bolt, eliminating the need to machine threads on the positioning part, saving manufacturing costs and making assembly more convenient.

[0013] In the aforementioned combination table and chair, the sliding member abuts against the surface of the seat support frame. The top of the seat support frame has strip-shaped sliding holes arranged front to back. The bottom of the sliding member has a slider embedded in the sliding holes, with the bottom of the slider extending out of the sliding holes. A bolt is inserted into the frame, and the large end of the bolt can be vertically positioned and abut against the bottom surface of the seat support frame. This design allows the slider and sliding holes to cooperate in constraining and guiding the back-and-forth sliding motion of the seat. The bolt positions and constrains the sliding member to prevent it from dislodging from the seat support frame, ensuring structural stability. The slider's bottom extending out of the sliding holes ensures that the sliding member and seat position are relatively stable, preventing the sliding member from locking with the seat connection and ensuring free sliding.

[0014] In the aforementioned combination table and chairs, the slider is elongated and arranged along the front-to-back direction. This further optimizes the smoothness of the seat's forward and backward sliding, effectively preventing jamming and ensuring user convenience.

[0015] In the aforementioned combination table and chair, the sliding member is plate-shaped and arranged along the front-to-back direction, always covering the front end of the sliding hole. This ensures safety when the user pulls the seat back to its original position, as the front end of the sliding hole is not exposed, preventing the user's fingers from being inserted into the hole and causing injury.

[0016] In the aforementioned combination table and chair, the bottom of the seat has a reinforcing rod that arches downwards along the left-right direction. The seat support frame has a support beam that also runs left-right. The reinforcing rod is located above the support beam, and a gap is left between the lowest point of the reinforcing rod and the support beam along the vertical direction. When the seat slides along the sliding hole to the front end of the hole, the lowest point of the reinforcing rod is in front of and close to the support beam. In this way, the reinforcing rod can improve the structural strength of the entire seat, and the support beam can improve the structural strength of the seat support frame. After the seat extends into place, the user sits on it. After the user's own weight is borne, a small portion of the lowest part of the reinforcing rod can move downwards to a certain extent. This allows this part of the reinforcing rod to form a limiting effect with the support beam behind it. That is, when the user is sitting, the seat is limited to a certain extent and will not slide backwards arbitrarily, making it more stable to use. When it is necessary to get up, the load is removed, and the reinforcing rod returns to its original upward position. The reinforcing rod and the support beam no longer interfere with each other, and the seat can slide backwards normally, ensuring a smooth getting up.

[0017] In the aforementioned combination table and chair, there are multiple reinforcing rods and support beams arranged at intervals along the front-to-back direction, with the spacing between adjacent reinforcing rods matching the spacing between adjacent support beams. This arrangement of multiple reinforcing rods enhances the support strength of the seat and ensures that a particular reinforcing rod acts on the user whether they sit forward or backward, thus guaranteeing the positional stability of the seat while seated.

[0018] Compared with the prior art, the advantages of the present invention are as follows:

[0019] When a user gets up from a lying or studying position, the legs naturally swing backward as the user straightens up. This pushes the seat, which is no longer under load and can slide freely, backward, freeing up space for the user to get out of the seat. This makes the product convenient to use and effectively reduces the front and back dimensions. In addition, the assembly of this table and chair set is also more convenient. Attached Figure Description

[0020] Figure 1 This is a three-dimensional structural diagram of the seat plate extending forward in this embodiment.

[0021] Figure 2 This is a three-dimensional structural diagram of the seat plate in the backward retraction state in this embodiment.

[0022] Figure 3 This is a three-dimensional structural diagram of the backrest support in the folded-down state in this embodiment.

[0023] Figure 4 This is a schematic diagram of the rear view structure in this embodiment.

[0024] Figure 5 yes Figure 4 A schematic diagram of the AA cross section.

[0025] Figure 6 yes Figure 5 The image in section B is not enlarged.

[0026] Figure 7 This is a partial exploded view of the structure in this embodiment.

[0027] Figure 8 yes Figure 7 Enlarged view of section C in the image.

[0028] Figure 9 This is a three-dimensional structural diagram of the base plate in this embodiment.

[0029] Figure 10 yes Figure 9 Enlarged view of part D in the image.

[0030] In the picture, 1. a desk; 2. a chair;

[0031] 3. Chair frame; 31. Seat support frame; 311. Sliding hole; 312. Support beam;

[0032] 4. Seat plate; 41. Positioning part; 411. Adjustment hole; 42. Reinforcing rod;

[0033] 5. Backrest support;

[0034] 6. Sliding component; 61. Sliding block;

[0035] 7. Connecting piece; 71. Connecting part; 72. Hinge part; 73. Clearance space; 74. Transition section;

[0036] 8. Bolts; 9. Nuts. Detailed Implementation

[0037] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0038] like Figure 1-5 , Figure 7As shown, this combination of desk and chair includes a desk 1 and a chair 2 connected as one unit. The chair 2 includes a chair frame 3, a seat 4, and a backrest support 5 that can be reclined relative to the chair frame 3. The chair frame 3 has a seat support frame 31 arranged in the front-to-back direction. The bottom of the seat 4 is provided with sliding parts 6 near the left and right sides, and the distance between the two sliding parts 6 is adjustable. The seat 4 is connected to the seat support frame 31 through the sliding parts 6 and can slide freely back and forth. The chair 2 also includes two connecting pieces 7. The connecting pieces 7 have connecting parts 71 and hinge parts 72. The two connecting parts 71 are respectively fixed to the left and right sides of the backrest support 5. The hinge parts 72 are located on the outside of the corresponding connecting parts 71. The lower end of the hinge part 72 extends out of the lower side of the backrest support 5 and is hinged to the seat support frame 31. A clearance space 73 is formed between the two hinge parts 72 for the seat 4 to pass through.Desk 1 is used to place books and stationery, while chair 2 is for the user to sit on. The desk 1 and chair 2 are connected as one unit, which improves the structural stability of the entire product. Chair frame 3 is the frame of chair 2. Seat 4 provides direct support for the user's buttocks, and backrest support 5 supports the user's back. When the backrest support 5 is reclined, it is convenient for the user to lie down. By setting seat support frames 31 arranged front and back on chair frame 3, and setting adjustable sliding parts 6 at the bottom of the left and right sides of seat 4, the seat 4 can slide freely back and forth through the sliding parts 6 connected to the seat support frames 31. This facilitates more stable sliding of seat 4. Furthermore, the sliding member 6 can overcome assembly errors by adjusting the spacing when assembling with the seat support frame 31, making assembly easier; and when the user sits on the forward-extending seat 4 during normal work and study, the seat 4 is held in place by the user's own weight through the sliding member 6 and the seat support frame 31, and the front side of the seat 4 is closer to the desk 1, making full use of the space between the seat support frame 31 and the desk 1 for the user to leave; when the user wants to leave the position and gets up, the legs will naturally swing backward during the straightening process, which can push the seat 4, which is no longer affected by the load and can slide freely, backward. The space previously occupied is freed up, allowing users to easily leave the seat, making it convenient and effectively reducing the product's front-to-back dimensions. When the user wants to return to the seat, they can simply slide the seat 4 forward to reset it, making operation simple. Two connecting pieces 7 are positioned on the left and right sides of the backrest support 5, with the connecting portion 71 of the connecting piece 7 fixed to the backrest support 5, and the hinge portion 72 hinged to the seat support frame 31. A clearance space 73 is formed between the hinge portions 72, allowing the seat 4 to move backward and pass through. Thus, the lower end of the connecting piece 7 extends outward from the backrest support. The backrest bracket 5 eliminates the influence of dimensional errors between the backrest bracket 5 and the seat plate 4, facilitating assembly. Furthermore, even when the backrest is folded down, sufficient clearance 73 is still provided between the hinged portions 72 at its bottom for the seat plate 4 to pass through. This allows the user to smoothly slide the seat plate 4 backwards during the process of getting up, even if their footing is below the sliding range of the seat plate 4. In other words, the seat plate 4 slides backwards to accommodate the footing position during the getting-up process, allowing the user to leave the seat more easily without needing to adjust their standing position or straighten the backrest, making it more convenient and comfortable to use. Specifically, the lower end of the hinged portion 72 bends forward and hinges to the seat plate support frame 31. This clearance in the upper structure makes it easier to observe the mating position when the hinged portion 72 and the seat plate support frame 31 are engaged, facilitating assembly. The connecting piece 7 has an outwardly inclined, strip-shaped transition section 74, with both ends of the transition section 74 connected to the connecting portion 71 and the hinged portion 72, respectively. In this way, the transition section 74 is connected to the connecting part 71 and the hinge part 72 at obtuse angles, which helps to ensure the overall structural strength of the connecting piece 7.

[0039] like Figure 5-10As shown, the bottom surface of the seat plate 4 has two protruding positioning parts 41 on each of its left and right sides. The bottom surface of the positioning part 41 has adjustment holes 411 arranged in the left and right direction. The sliding member 6 is fixed to the positioning part 41 by bolts 8 that pass through the sliding member 6 and the adjustment holes 411 in sequence. In this way, when the bolts 8 are loosened, they can move along the adjustment holes 411, thereby driving the entire sliding member 6 to move left and right, which is conducive to adjusting the distance between the two sliding members 6 for easy assembly. In addition, the protrusion of the positioning part 41 can form an accommodating space between the top of the sliding member 6 and the bottom surface of the seat plate 4, which is convenient for the user to insert their fingers into the accommodating space on the left and right sides to operate the reset when dragging the seat plate 4 forward, which helps to prevent finger injury. Specifically, the positioning part 41 is U-shaped, and a nut 9 is embedded in the positioning part 41 and is circumferentially positioned with the inner side wall of the positioning part 41. The small end of the bolt 8 is screwed into the nut 9. In this way, the side of the positioning part 41 can be opened to insert the nut 9. The nut 9 is circumferentially positioned by the positioning part 41, which can ensure smooth cooperation with the rotating bolt 8. There is no need to machine threads on the positioning part 41, saving process costs and making assembly more convenient.

[0040] like Figure 1-10 As shown, the slider 6 is in contact with the surface of the seat support frame 31. The top of the seat support frame 31 has a strip-shaped sliding hole 311 arranged front to back. The bottom of the slider 6 has a slider 61 embedded in the sliding hole 311, with the bottom of the slider 61 extending out of the sliding hole 311. A bolt 8 is inserted on top, and the large end of the bolt 8 can be vertically positioned and abutted against the bottom surface of the seat support frame 31. This facilitates the slider 61 and the sliding hole 311 to constrain and guide the front-to-back sliding motion of the seat plate 4. The bolt 8 can position and constrain the slider 6 to prevent it from dislodging from the seat support frame 31, ensuring structural stability. The bottom of the slider 61 extending out of the sliding hole 311 can prevent the slider 6 from locking with the seat plate 4 connector while ensuring the relative stability of the position of the slider 6 and the seat plate 4, ensuring free sliding. The slider 61 is long and strip-shaped and arranged in the front-to-back direction. This further optimizes the smoothness of the front-to-back sliding of the seat plate 4, effectively avoiding jamming and ensuring user convenience. The slider 6 is plate-shaped and arranged along the front-back direction, and the slider 6 always covers the front end of the sliding hole 311. In this way, when the user pulls the base plate 4 forward to reset, the front end of the sliding hole 311 will not be exposed, which can prevent the user's fingers from being inserted into the sliding hole 311 and causing squeezing injury, thus ensuring the safety of use.

[0041] like Figure 4-8As shown, the bottom of the seat plate 4 has a reinforcing rod 42 that is arranged in the left-right direction and arches downward. The seat plate support frame 31 has a support beam 312 arranged in the left-right direction. The reinforcing rod 42 is located on the support beam 312, and the lowest point of the reinforcing rod 42 leaves a gap with the support beam 312 in the vertical direction. When the seat plate 4 slides along the sliding hole 311 to the front end of the sliding hole 311, the lowest point of the reinforcing rod 42 is located in front of and close to the support beam 312. The reinforcing rod 42 enhances the structural strength of the entire seat plate 4, and the support beam 312 improves the structural strength of the seat plate support frame 31. After the seat plate 4 extends into place, the user sits on it. Under the user's own weight, the lowest part of the reinforcing rod 42 can move downwards to a certain extent, thus allowing this part of the reinforcing rod 42 to form a limiting effect with the rear support beam 312. That is, when the user is seated, the seat plate 4 is limited to a certain extent and will not slide backwards arbitrarily, making it more stable. When it is necessary to get up, the load is removed, allowing the reinforcing rod 42 to return to its original upward position. The reinforcing rod 42 and the support beam 312 no longer interfere with each other, and the seat plate 4 can slide backwards normally, ensuring a smooth getting up. In contrast, the general positioning method used in this field is to set up structures such as limiting slots to position the sliding part 6, which requires manual operation to unlock during reset. After prolonged use, shims can be added between the sliding part 6 and the bottom of the positioning part 41 to adjust the distance between the reinforcing rod 42 and the support beam 312. There are two reinforcing rods 42 and two support beams 312, which are spaced apart in the front-to-back direction. The spacing between adjacent reinforcing rods 42 is the same as the spacing between adjacent support beams 312. This arrangement of multiple reinforcing rods 42 helps to further improve the support strength of the seat plate 4, and at the same time helps to ensure that a certain reinforcing rod 42 is activated whether the user sits forward or backward on the seat plate 4, thereby ensuring the positional stability of the seat plate 4 when seated.

[0042] The specific embodiments described herein are merely illustrative of the spirit of the invention. Those skilled in the art to which this invention pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of the invention or exceeding the scope defined by the appended claims.

Claims

1. A combination desk and chair set, comprising a desk (1) and a chair (2) integrated together, wherein the chair (2) includes a chair frame (3), a seat (4), and a backrest support (5) that can be reclined relative to the chair frame (3), characterized in that, The chair frame (3) has a seat support frame (31) arranged in the front-to-back direction. The bottom of the seat (4) is provided with sliding parts (6) near the left and right sides. The sliding parts (6) are long strips and arranged in the front-to-back direction. The seat (4) is connected to the seat support frame (31) through the sliding parts (6) and can slide freely back and forth. The chair (2) also includes two connecting pieces (7). The connecting pieces (7) have connecting parts (71) and hinge parts (72). The two connecting parts (71) are respectively fixed to the left and right sides of the backrest bracket (5). The hinge parts (72) are located outside the corresponding connecting parts (71). The lower end of the hinge parts (72) extends out of the lower side of the backrest bracket (5) and is hinged to the seat support frame (31). The two hinge parts (72) form a space between them for the seat (4) to pass through. The seat plate (4) has a protruding positioning part (41) on its bottom surface. The positioning part (41) has an adjustment hole (411) in the waist shape along the left and right direction. The sliding member (6) is fixed to the positioning part (41) by a bolt (8) that passes through the sliding member (6) and the adjustment hole (411) in sequence. The sliding member (6) is in contact with the surface of the seat plate support frame (31). The top of the seat plate support frame (31) has a sliding hole (311) arranged in a strip shape in front and behind. The bottom of the sliding member (6) has a slider (61) embedded in the sliding hole (311). The bottom of the slider (61) extends out of the sliding hole (311). The bolt (8) is inserted on the slider (61) and the large end of the bolt (8) is vertically opposite to the bottom surface of the seat plate support frame (31).

2. The combined table and chairs according to claim 1, characterized in that, The lower end of the hinge (72) bends forward and is hinged to the seat plate support frame (31).

3. The combined table and chairs according to claim 1, characterized in that, The connecting piece (7) has an outwardly inclined strip-shaped transition section (74), the two ends of which are connected to the connecting part (71) and the hinge part (72) respectively.

4. The combined table and chairs according to claim 1, characterized in that, The positioning part (41) is U-shaped, and a nut (9) is embedded in the positioning part (41) and is circumferentially positioned with the inner sidewall of the positioning part (41). The small end of the bolt (8) is screwed into the nut (9).

5. The combined table and chairs according to claim 4, characterized in that, The slider (6) always covers the front end of the sliding hole (311).

6. The combined table and chairs according to claim 1, characterized in that, The bottom of the seat plate (4) has a reinforcing rod (42) that is arranged in the left-right direction and arched downwards. The seat plate support frame (31) has a support beam (312) arranged in the left-right direction. The reinforcing rod (42) is located above the support beam (312), and the lowest point of the reinforcing rod (42) is vertically separated from the support beam (312). When the seat plate (4) slides along the sliding hole (311) to the front end of the sliding hole (311), the lowest point of the reinforcing rod (42) is in front of and close to the support beam (312).

7. The combined table and chairs according to claim 6, characterized in that, There are multiple reinforcing rods (42) and supporting beams (312) arranged at intervals along the front-back direction, and the spacing between adjacent reinforcing rods (42) is the same as the spacing between adjacent supporting beams (312).

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