A seat with a rearward tilt-preventing structure

Abstract

The utility model belongs to the technical field of seat, concretely relates to a seat with prevent backward tilt structure, including support, the top of two support is equipped with seat, be provided with cross bar between two support, the bottom of cross bar center end is through bolt and is docked with the top of connecting column, the utility model, when using, the inside of mounting strip is adjusted to screw rod, when screw rod moves upwards, will drive linkage column to move upwards, when linkage column moves upwards, will drive side plate synchronous upshift. When two side plates are respectively connected with corresponding limit slot, at this moment, along with screw rod unceasingly drive linkage column upshift, linkage column will drive cross bar to move upwards through side plate. Finally, screw rod will firmly support cross bar under baffle, at this moment, when student sits on seat and leans back greatly, support rod will support at the rear of seat, thereby can prevent the seat from falling over caused by excessive backward tilt, thereby can prevent student from falling and being injured.

Description

Technical Field

[0001] This utility model belongs to the field of seat technology, specifically relating to a seat with a structure to prevent backward tilting. Background Technology

[0002] Student chairs are specifically designed for use by students in school settings, including study and daily life. Considering the extended periods students spend sitting, student chairs are typically designed according to ergonomic principles to provide comfortable posture support and reduce student fatigue. For example, the height, angle, seat surface, and backrest shape are optimized based on students' body dimensions and posture habits to ensure good support, maintain correct posture, and reduce pressure on the spine, lower back, and neck.

[0003] Currently, most student chairs on the market use a traditional fixed structure design, lacking an effective backward tilt protection mechanism. When a student leans back significantly, the chair's center of gravity shifts backward, easily causing it to lose balance and tip backward. This not only risks student falls and injuries, affecting their physical health, but can also distract other students and disrupt normal teaching order. Utility Model Content

[0004] The purpose of this invention is to provide a seat with an anti-tipping structure, aiming to solve the problem that when construction workers of varying heights attempt to pass through turnstiles for facial recognition, a significant height difference often arises due to the varying vertical distance between the device and the person's face. This height difference may prevent the camera from accurately capturing and clearly identifying the facial features of all individuals, especially when the face deviates from the optimal recognition area, resulting in a significant reduction in recognition accuracy and efficiency.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a seat with a structure to prevent backward tilting, comprising a bracket, a seat mounted on the top of two brackets, a crossbar between the two brackets, the bottom of the center end of the crossbar being bolted to the top of a connecting column, and a support rod welded to the top of the connecting column;

[0006] An anti-slip pad is attached to the other end of the support rod. An installation strip is welded to one side of the outer wall of each bracket. A baffle is welded to the top of the installation strip. The two ends of the crossbar are slidably connected to the corresponding installation strip.

[0007] In order to prevent the crossbar from detaching from the top of the mounting strip when it moves to the top of the mounting strip, as a seat with an anti-tipping structure according to this utility model, preferably, a blocking groove is formed on the surface of the crossbar near both ends, a sliding groove is formed at the end of the crossbar connecting to the bracket, and a limiting groove is formed on the inner walls of both sides of the sliding groove.

[0008] The crossbar is slidably connected to the mounting strip via a groove, the bottom of the blocking groove is connected to the top of the groove, and the baffle is sleeved inside the blocking groove.

[0009] In order to enable the linkage column to move upward and drive the crossbar to move upward, as a seat with an anti-tipping structure according to this utility model, preferably, the mounting strip has a threaded opening at one end near the bottom, one end of the threaded opening is connected to the inner cavity, the inner cavity is also opened inside the mounting strip, the rectangular openings on both sides of the inner cavity extend to the side wall of the mounting strip, a screw is threaded through the threaded opening, a ball is movably fitted at the top of the screw, the top of the ball is movably in contact with the bottom of the linkage column, and a side plate is welded to each side of the linkage column;

[0010] The linkage column is located in the central area of ​​the inner cavity, and the side plate extends to the outside through the rectangular opening of the inner cavity. The extended part of the side plate is engaged with the limiting groove.

[0011] In order to enable the support rod to support the rear of the seat, as a seat with an anti-tipping structure according to this utility model, preferably, the support rod is installed obliquely between the connecting column and the anti-slip pad.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] In use, adjust the screw inwards towards the mounting strip. As the screw moves upwards, it drives the connecting column upwards, which in turn moves the side plates upwards simultaneously. Once the two side plates are engaged with their corresponding limit slots, the screw continues to drive the connecting column upwards, which in turn moves the crossbar upwards via the side plates. Finally, the screw secures the crossbar firmly against the bottom of the baffle. When a student leans back significantly in the chair, the support rod will brace against the back of the seat, preventing it from tipping over due to excessive backward tilting. This prevents students from falling and getting injured, and also prevents other students from being distracted and disrupting the normal teaching order. Attached Figure Description

[0014] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0015] Figure 1 is a schematic diagram of the main view structure provided in an embodiment of this application.

[0016] Figure 2 is a schematic diagram of the rear view structure provided in an embodiment of this application.

[0017] Figure 3 is a schematic diagram of the cross-sectional connection structure of the mounting strip provided in an embodiment of this application.

[0018] Figure 4 is a schematic diagram of the screw connection structure provided in the embodiment of this application.

[0019] Figure 5 is a schematic diagram of a partial structure of the crossbar provided in an embodiment of this application.

[0020] In the diagram: 1. Bracket; 2. Seat; 3. Crossbar; 31. Blocking groove; 32. Slide groove; 33. Limiting groove; 4. Connecting column;

[0021] 5. Support rod; 6. Anti-slip pad; 7. Mounting strip; 71. Threaded opening; 72. Inner cavity; 73. Screw; 74. Ball bearing; 75. Connector

[0022] 76. Moving column; 8. Side plate; 9. Baffle. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Please refer to Figures 1-5. The present invention provides the following technical solution: a seat with a structure to prevent backward tilting, including a bracket 1, a seat 2 installed on the top of the two brackets 1, the bracket 1 and the seat 2 constitute the seat involved in the present technical solution, a crossbar 3 is provided between the two brackets 1, the bottom of the center end of the crossbar 3 is connected to the top of the connecting column 4 by bolts, and a support rod 5 is welded to the top of the connecting column 4;

[0025] The other end of the support rod 5 is attached with an anti-slip pad 6. Each bracket 1 has an installation strip 7 welded to one side of its outer wall. The top of the installation strip 7 is welded with a baffle 8. The two ends of the crossbar 3 are slidably connected to the corresponding installation strip 7.

[0026] Preferably, a blocking groove 31 is provided on the surface of the crossbar 3 near both ends, a sliding groove 32 is provided at the connection end of the crossbar 3 and the bracket 1, and a limiting groove 33 is provided on the inner wall of both sides of the sliding groove 32.

[0027] The crossbar 3 is slidably connected to the mounting strip 7 via the sliding groove 32, the bottom of the blocking groove 31 is connected to the top of the sliding groove 32, and the baffle 8 is sleeved inside the blocking groove 31.

[0028] In actual use, when the crossbar 3 moves upward, it will drive the blocking groove 31 to move upward synchronously. When the blocking groove 31 moves to its maximum stroke, it will lock the baffle 8 into its interior. In this way, the baffle 8 will block the blocking groove 31 from moving further upward, thereby preventing the crossbar 3 from detaching from the mounting strip 7.

[0029] Preferably, the mounting strip 7 has a threaded opening 71 near its bottom end, one end of which is connected to the inner cavity 72, which is also located inside the mounting strip 7. The rectangular openings on both sides of the inner cavity 72 extend to the side wall of the mounting strip 7. A screw 73 is threaded through the threaded opening 71. A ball 74 is movably fitted at the top of the screw 73. The top of the ball 74 is in movable contact with the bottom of the linkage column 75. A side plate 76 is welded to each side of the linkage column 75.

[0030] When the crossbar 3 is inserted into the outer wall of the corresponding mounting strip 7 through the sliding groove 32, the connecting column 75 is adjusted upward so that the side plates 76 on both sides of the connecting column 75 are inserted into the limiting groove 33 of the crossbar 3, and thus the crossbar 3 is stably installed on the mounting strip 7.

[0031] The linkage column 75 is located in the central area of ​​the inner cavity 72, and the side plate 76 extends outward through the rectangular opening of the inner cavity 72. The extended part of the side plate 76 engages with the limiting groove 33.

[0032] In practical use, when the screw 73 moves upward through the threaded port 71, it will cause the ball 74 to abut against the bottom of the connecting post 75, so that the screw 73 can rotate smoothly at the bottom of the connecting post 75 through the ball 74.

[0033] Preferably, the support rod 5 is installed at an angle between the connecting column 4 and the anti-slip pad 6.

[0034] In practical use, the screw 73 is rotated and screwed inwards onto the mounting strip 7 for adjustment. As the screw 73 spirals upwards along the threaded channel 71, its top drives the connecting column 75 to move vertically upwards in sync. When the connecting column 75 moves upwards, the side plate 76 fixed to it also moves upwards in sync. As the side plate 76 rises, it engages with the inner wall of the limiting groove 33. Once both side plates 76 are fully engaged with their corresponding limiting grooves 33, the connection is complete.

[0035] At this time, as the screw 73 continues to rotate, the connecting rod 75 transmits the upward thrust to the crossbar 3 through the side plate 76. Under the continuous drive of the screw 73, the crossbar 3 gradually rises until its top is tightly fitted against the lower surface of the baffle 8. At this point, the axial thrust of the screw 73 and the reaction force of the baffle 8 form a stable clamping force, firmly holding the crossbar 3 against the bottom of the baffle 8.

[0036] When a student sits on seat 2 and leans back significantly, the support rod 5, connected to the bottom of seat 2, contacts the ground through the rubber anti-slip pad 6, forming a stable triangular support structure. At this time, the support rod 5, together with the crossbar 3 and the baffle 8, constitute a stable support frame, limiting the backward tilting angle of seat 2 within a safe range, effectively preventing tipping accidents caused by excessive backward tilting, and providing reliable safety for students.

[0037] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A seat with an anti-tipping structure, comprising a support frame (1), wherein a seat (2) is mounted on the top of two of the supports (1), characterized in that, A crossbar (3) is provided between the two supports (1). The bottom of the center end of the crossbar (3) is connected to the top of the connecting column (4) by bolts. A support rod (5) is welded to the top of the connecting column (4). The other end of the support rod (5) is attached with an anti-slip pad (6). Each bracket (1) has an installation strip (7) welded to one side of its outer wall. The top of the installation strip (7) is welded with a baffle (8). The two ends of the crossbar (3) are slidably connected to the corresponding installation strip (7).

2. A seat with an anti-tipping structure according to claim 1, characterized in that: A blocking groove (31) is provided on the surface of the crossbar (3) near both ends, and a sliding groove (32) is provided at the connection end of the crossbar (3) and the bracket (1). A limiting groove (33) is provided on the inner walls of both sides of the sliding groove (32).

3. A seat with an anti-tipping structure according to claim 2, characterized in that: The crossbar (3) is slidably connected to the mounting strip (7) through the sliding groove (32), the bottom of the blocking groove (31) is connected to the top of the sliding groove (32), and the baffle (8) is sleeved inside the blocking groove (31).

4. A seat with an anti-tipping structure according to claim 1, characterized in that: The mounting strip (7) has a threaded opening (71) at one end near the bottom, and one end of the threaded opening (71) is connected to the inner cavity (72). The inner cavity (72) is also opened inside the mounting strip (7), and the rectangular openings on both sides of the inner cavity (72) extend to the side wall of the mounting strip (7).

5. A seat with an anti-tipping structure according to claim 4, characterized in that: A screw (73) is threaded through the threaded opening (71). A ball (74) is movably fitted at the top of the screw (73). The top of the ball (74) is in movable contact with the bottom of the connecting column (75). A side plate (76) is welded to each side of the connecting column (75).

6. A seat with an anti-tipping structure according to claim 5, characterized in that: The linkage column (75) is located in the central area of ​​the inner cavity (72), and the side plate (76) extends to the outside through the rectangular opening of the inner cavity (72). The extended part of the side plate (76) is engaged with the limiting groove (33).

7. A seat with an anti-tipping structure according to claim 3, characterized in that: The support rod (5) is installed at an angle between the connecting column (4) and the anti-slip pad (6).

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