Fixed row ladder chair

Abstract

The utility model belongs to the technical field of furniture manufacturing, and discloses a fixed row step chair which comprises a back plate, a seat plate assembly, standing feet and a table top, the back plate is used for being attached to the back of a human body, the seat plate assembly comprises a bearing plate and a gravity return structure, the bearing plate is used for providing bearing force, the gravity return structure is connected to the bearing plate, and the standing feet are arranged on the table top. The gravity return structure is used for automatically retracting and resetting the bearing plate upwards, the standing legs are connected to the back plate and the bearing plate and used for supporting the back plate and the seat plate assembly, the table top comprises a table top plate and a book net, and the book net is connected to the table top plate. The strength and the recovery precision are guaranteed through the gravity recovery mechanism, the bearing plate is recovered by gravity, the working stability is high by utilizing the gravity principle, the problems of elastic fatigue and the like are avoided, and the long-term stability of the recovery function is guaranteed; the book net on the table top can store school supplies in a classified mode, the school supplies are convenient to take and keep clean, the table top plate provides a writing operation plane, and diversified requirements are met.

Description

Technical Field

[0001] This utility model belongs to the field of furniture manufacturing technology, and in particular relates to a fixed row of stepped chairs. Background Technology

[0002] In the education sector, fixed tiered benches are essential facilities for students' daily learning in school classrooms, lecture halls, and training institutions. In conference settings, such as corporate annual meetings, academic seminars, and government work meetings, these seats are also widely used to provide seating for attendees. In the performing arts, theaters, auditoriums, and other performance venues rely heavily on fixed tiered benches to meet the seating needs of audiences.

[0003] However, most traditional tiered chairs lack an automatic rotation mechanism, and the seat retraction often relies on manual operation. Manually pushing the seat to rotate affects passage efficiency and user experience. At the same time, the installation corner brackets need to be replaced when adjusting the table height, which is very inconvenient and affects the efficiency of table height adjustment. Utility Model Content

[0004] The purpose of this invention is to provide a fixed row of tiered chairs to solve the problems of existing tiered chairs lacking an automatic rotation mechanism, the seat board retraction often relying on manual operation, manually pushing the seat board to rotate, affecting passage efficiency and user experience, and the need to replace the mounting brackets when adjusting the table height, which is very inconvenient and affects the efficiency of table height adjustment.

[0005] To achieve this objective, the present invention adopts the following technical solution:

[0006] This utility model provides a fixed row of tiered benches, which includes:

[0007] Back panel, designed to fit the human back;

[0008] A seat plate assembly includes a bearing plate and a gravity recovery structure. The bearing plate provides load-bearing capacity, and the gravity recovery structure connects the bearing plate and the foot. The gravity recovery structure is used for the bearing plate to automatically retract and reset itself.

[0009] The foot, connected to the back plate and the support plate, is used to provide support for the back plate and the support plate assembly;

[0010] The desktop includes a tabletop and a book net, the book net being connected to the tabletop and used to store books and other school supplies, the tabletop being connected to the back panel and used for writing operations.

[0011] As an optional technical solution for fixed row tiered benches, it also includes an anti-rotation locking structure, which includes:

[0012] The locking structure includes a hook plate, a hinge, and a first elastic element. The hinge is connected to the foot and is used to connect the hook plate. The hook plate is connected to the hinge and can reciprocate under the action of the hinge. The left and right ends of the first elastic element are respectively connected to the foot and the hook plate, and are used to provide a reset elastic force for the hook plate.

[0013] An extrusion plate, connected to the back plate, is used to push the hook plate to rotate around the hinge.

[0014] A transmission block, connected to the back plate, is used to transmit the pressure generated by the extrusion plate on the back plate to the hook plate.

[0015] As an optional technical solution for fixed row of tiered chairs, the back panel is provided with a second elastic element, the front end of which is connected to the compression plate to provide a restoring force for the back panel.

[0016] As an optional technical solution for fixed row of tiered chairs, the back panel is provided with a receiving groove, and the extrusion plate is inserted into the receiving groove.

[0017] As an optional technical solution for fixed row of tiered benches, both the extrusion plate and the transmission block are provided with beveled edges, and the transmission block and the beveled edges of the extrusion plate are in contact.

[0018] As an optional technical solution for fixed row of tiered chairs, the tabletop is provided with straight bars, which are connected to the back panel for adjusting and connecting the tabletop height.

[0019] Beneficial effects

[0020] This utility model provides a fixed tiered chair, which includes a backrest, a seat assembly, legs, and a tabletop. The backrest conforms to the user's back. The seat assembly includes a support plate and a gravity-returning structure. The support plate provides load-bearing capacity, and the gravity-returning structure connects the support plate and the legs, allowing the support plate to automatically retract and return to its original position. The legs connect to the backrest and support plate, providing stable support for the backrest and seat assembly. The tabletop includes a tabletop and a book net. The book net is connected to the tabletop and is used to store books and other school supplies. The tabletop is connected to the backrest and is used for writing and other operations. The gravity-returning mechanism ensures strength and accuracy of the return mechanism. The support plate returns to its original position by gravity, utilizing the principle of gravity for high stability and avoiding problems such as elastic fatigue, ensuring long-term stability of the return function. The book net on the tabletop allows for the categorized storage of school supplies, making them easy to access and keeping the table tidy. The tabletop provides a writing surface, meeting diverse needs. Attached Figure Description

[0021] Figure 1 The diagram shown is a structural schematic of a fixed row of tiered chairs provided in an embodiment. Figure 1 ;

[0022] Figure 2 The diagram shown is a structural schematic of a fixed row of tiered chairs provided in an embodiment. Figure 2 ;

[0023] Figure 3 The diagram shown is a schematic representation of the anti-rotation locking structure provided in the embodiment. Figure 1 ;

[0024] Figure 4 The diagram shown is a schematic representation of the anti-rotation locking structure provided in the embodiment. Figure 2 .

[0025] In the diagram: 1. Back plate; 2. Support plate; 3. Gravity recovery structure; 4. Foot; 5. Tabletop; 6. Hook plate; 7. Hinge; 8. First elastic element; 9. Extrusion plate; 10. Transmission block; 11. Second elastic element; 12. Straight bar. Detailed Implementation

[0026] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, and not all of the structures.

[0027] In the description of this invention, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0028] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0029] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, 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 the present invention. In addition, the terms "first" and "second" are used only for distinction in description and have no special meaning.

[0030] like Figures 1 to 4 As shown, this utility model provides a fixed row of tiered chairs. The fixed row of tiered chairs includes a seat assembly, a backrest 1, legs 4, and a tabletop 5. The backrest 1 has curvature in both the horizontal and vertical directions, forming a 3D curved surface, which better conforms to the human back, enhancing comfort and conforming to ergonomics. The seat assembly includes a support plate 2 and a gravity recovery structure 3. The support plate 2 provides load-bearing capacity, and reinforcing ribs are added to the back of the seat. The gravity recovery structure 3 connects the support plate 2 and the legs 4. 3. Embedded inside the seat plate, not exposed, simple and reliable. Gravity recovery structure 3 is used for the automatic upward retraction and reset of the seat plate 2. When the user stands up, the seat plate 2 can be automatically retracted and reset. The foot 4 is connected to the back plate 1 and the seat plate 2. The foot 4 is integrally die-cast. The front of the foot 4 has a shape with three reinforcing ribs in the middle. The tabletop 5 includes a tabletop and a book net. The book net is connected to the tabletop and is used to store books and other study supplies. The tabletop is connected to the back plate 1 and is used for writing and other operations. The tabletop has a straight bar 12, which is connected to the back plate 1 for adjusting the height of the tabletop.

[0031] The strength and accuracy of the return mechanism are ensured by gravity. The return of the support plate 2 is achieved by gravity, which ensures high working stability by utilizing the principle of gravity and avoids problems such as elastic fatigue, thus ensuring long-term stability of the reset function. The book net on the desktop 5 can be used to classify and store school supplies, making them easy to access and keeping them tidy. The tabletop provides a writing surface, and the tabletop can be adjusted in height to meet diverse needs.

[0032] When in use, the user presses the support plate 2, causing it to rotate downwards and unfold under the force of the gravity recovery structure 3. The user then sits down, and the 3D curved surface of the back panel 1 conforms to the user's back, providing comfortable support. During the sitting process, the reinforcing ribs on the back of the support plate 2 ensure that it has sufficient strength to support the user's weight. The user can write, place study supplies, etc. on the tabletop. The book net can classify and store books and other items, keeping the desktop 5 tidy. When the user gets up, no more pressure is applied to the support plate 2, and the gravity recovery structure 3 comes into play, automatically causing the support plate 2 to retract upwards and return to its initial state, ready for the next user.

[0033] Specifically, the book net uses cold-drawn steel strips as the main frame, supplemented by steel strips to form a mesh structure, and the surface is electrostatic powder coated; the base material of the tabletop is high-density solid wood particleboard, with fireproof board on the surface and injection molding edge sealing; the support plate 2 is made of spun wood veneer formed by special mold.

[0034] In this embodiment, there are two sets of gravity recovery structures 3, located on the left and right sides of the same support base respectively.

[0035] See Figure 3 and Figure 4 In this embodiment, the fixed row of tiered chairs is also equipped with an anti-rotation locking structure. The anti-rotation locking structure consists of a locking structure, a pressing plate 9, and a transmission block 10. The pressing plate 9 is connected to the back panel 1. When subjected to external force, the pressing plate 9 accurately transmits the pressure exerted on the back panel 1 by the pressing plate 9 to the hook plate 6 through the transmission block 10, pushing the hook plate 6 to rotate around the hinge 7. The locking structure includes the hook plate 6, the hinge 7, and the first elastic element 8. The hinge 7 is securely connected to the foot 4 and is used to connect the hook plate 6, so that the hook plate 6... It can rotate flexibly back and forth under its action. The left and right ends of the first elastic element 8 are connected to the foot 4 and the hook plate 6 respectively, providing a reliable reset elastic force for the hook plate 6, ensuring that the hook plate 6 can return to the initial position in time when it is not subjected to external force; the back plate 1 is provided with a second elastic element 11, the front end of the second elastic element 11 is connected to the extrusion plate 9, and is used to provide a reset elastic force for the back plate 1; the back plate 1 is provided with a receiving groove, and the extrusion plate 9 is inserted into the receiving groove; both the extrusion plate 9 and the transmission block 10 are provided with beveled edges, and the beveled edges of the transmission block 10 and the extrusion plate 9 are in contact.

[0036] When in use, when the user's center of gravity is against the back of the support plate 2, the user's back will contact the back panel 1, automatically pressing the compression plate 9. The compression plate 9 pushes the second elastic element 11 to elastically contract. At the same time, the left and right sides of the compression plate 9 will squeeze the transmission block 10. The compression plate 9 slides along the inclined edge of the transmission block 10, causing the transmission block 10 to move to the left and right ends, so that the transmission block 10 squeezes the hook plate 6. Under the pressure, the hook plate 6 rotates around the hinge 7. At the same time, the first elastic element 8 is squeezed and elastically contracted. The rotation of the hook plate 6 causes the bottom end of the hook plate 6 to be placed at the bottom end of the support plate 2, supporting the bottom end of the support plate 2 and preventing the user from accidentally flipping over when the center of gravity is against the back of the support plate 2, thus ensuring the stability of the user's seating. When the user stops applying pressure, the second elastic element 11 pushes the pressing plate 9 back to its original position with its restoring force, and the first elastic element 8 takes effect. With its own restoring force, it drives the hook plate 6 to rotate in the opposite direction, so that it returns to its initial position and releases the lock on the bearing plate 2. At the same time, the top of the hook plate 6 pushes the transmission block 10 back to its original position.

[0037] In this embodiment, there are two sets of anti-rotation locking structures; the first elastic element 8 and the second elastic element 11 can be elastic elements with a certain elasticity, such as springs, which can provide a reset force for the hook plate 6; the hinge 7 can be a hinge seat or other connecting element that allows the hook plate 6 to rotate horizontally; the transmission block is slidably installed on the bottom of the back of the back plate.

[0038] The following is a detailed description of the use of a fixed row of tiered benches:

[0039] Locking Ladder Chair: When the user presses the seat plate 2, the seat plate 2 rotates downward and unfolds under the force of the gravity-restoring structure 3, allowing the user to sit down. When the user's center of gravity is against the back of the seat plate 2, the user's back will naturally press against the compression plate 9. This causes the compression plate 9 to push the second elastic element 11 to elastically contract. At the same time, the left and right sides of the compression plate 9 will squeeze the transmission block 10 to slide to the left and right. During the sliding process, the transmission plate will squeeze the hook plate 6. Under the pressure, the hook plate 6 rotates around the hinge 7. At the same time, the first elastic element 8 is squeezed and elastically contracted. The rotation of the hook plate 6 causes the bottom end of the hook plate 6 to be placed at the bottom end of the seat plate 2, supporting and limiting the bottom end of the seat plate 2, preventing accidental tipping when the user's center of gravity is against the back of the seat plate 2, and ensuring the stability of the user's seat.

[0040] Staircase Reset: When the user no longer applies pressure to the seat plate 2, the second elastic element 11 resets its elastic force, which pushes the compression plate 9 to return to its original position. The first elastic element 8 then takes effect, using its own reset elastic force to drive the hook plate 6 to rotate in the opposite direction, returning it to its initial position. At the same time, when the user gets up, since the user no longer applies pressure to the seat plate 2, the gravity recovery structure 3 takes effect, automatically driving the seat plate 2 to retract upwards and reset to its initial state, waiting for the next user to use it.

[0041] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. Those skilled in the art will be able to make various obvious changes, readjustments, and substitutions without departing from the scope of protection of the present invention. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. A fixed row of tiered benches, characterized in that, include: Back panel (1), used to fit the back of the human body; The seat plate assembly includes a bearing plate (2) and a gravity recovery structure (3), wherein the bearing plate (2) is used to provide load-bearing capacity, and the gravity recovery structure (3) is connected to the bearing plate (2) and the foot (4), and the gravity recovery structure (3) is used for the bearing plate (2) to automatically retract upward and reset; The foot (4) is connected to the back plate (1) and the support plate (2) and is used to provide support for the back plate (1) and the support plate assembly; The desktop (5) includes a table panel and a book net, the book net being connected to the table panel and used to store books and learning supplies, the table panel being connected to the back panel (1) and used for writing operations.

2. A fixed row of tiered benches according to claim 1, characterized in that, It also includes an anti-rotation locking structure, which includes: The locking structure includes a hook plate (6), a hinge (7), and a first elastic element (8). The hinge (7) is connected to the foot (4), and the hook plate (6) is connected to the hinge (7). The hook plate (6) can reciprocate under the action of the hinge (7). The left and right ends of the first elastic element (8) are connected to the foot (4) and the hook plate (6) respectively, and are used to provide a reset elastic force for the hook plate (6). The extrusion plate (9), connected to the back plate (1), is used to push the hook plate (6) to rotate around the hinge (7); The transmission block (10) is connected to the back plate (1) and is used to transmit the pressure generated by the extrusion plate (9) on the back plate (1) to the hook plate (6).

3. A fixed row of tiered benches according to claim 2, characterized in that, The back plate (1) is provided with a second elastic element (11), the front end of which is connected to the compression plate (9) to provide a restoring force for the back plate (1).

4. A fixed row of tiered benches according to claim 2, characterized in that, The back plate (1) is provided with a receiving groove, and the extrusion plate (9) is inserted into the receiving groove.

5. A fixed row of tiered benches according to claim 2, characterized in that, Both the extrusion plate (9) and the transmission block (10) have beveled edges, and the beveled edges of the transmission block (10) and the extrusion plate (9) are in contact.

6. A fixed row of tiered benches according to claim 1, characterized in that, The tabletop is provided with a straight bar (12), which is connected to the back plate (1) for adjusting the height of the tabletop.

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