Anti-stumbling noon break seat

Abstract

The utility model provides an anti-stumbling noon break seat, which relates to the field of desks and chairs and comprises a support, a base and a backrest. The base is fixed on the bracket; the base is provided with a seat surface for bearing a human body; the seat surface is arranged upwards; the backrest is rotatably fixed on the bracket; the backrest is provided with a backrest surface for the back of a human body to lean; the orientation of the backrest surface can be changed along with the rotation of the backrest relative to the bracket; in a normal use state, the backrest surface can face the direction of the seat surface; a telescopic rod is fixedly arranged in the middle of the lower portion of the base. The telescopic direction of the telescopic rod is a direction deviating from the backrest; the tail end of the telescopic rod is provided with a supporting plate assembly used for supporting legs. The anti-stumbling noon break seat provided by the utility model solves the problem that a student is easily stumbled and injured by a noon break seat with a supporting leg structure in the prior art, and can reduce the risk that the student is stumbled by the noon break seat.

Description

Technical Field

[0001] This utility model relates to the field of school desks and chairs, specifically to an anti-tripping lunch break chair. Background Technology

[0002] In the field of educational facilities, desks and chairs are essential tools for students' daily learning, and their design rationality and functionality have a significant impact on students' learning experience and physical health. With the development of educational concepts and the increasing attention to students' physical and mental health, the functional requirements for desks and chairs are no longer limited to meeting basic learning needs, but also need to adapt to students' comfort and health needs in scenarios such as lunch breaks.

[0003] Traditional school desks and chairs typically have fixed backrest angles that cannot be adjusted to suit students' needs, forcing them to slouch over their desks during lunch breaks. Prolonged use of this posture can have numerous adverse effects on students' health, such as compressing the arms and hindering blood circulation, leading to numbness and soreness; it also puts abnormal bending pressure on the cervical and spinal spine, which can accumulate over time and cause postural problems, affecting students' normal physical development.

[0004] To address the shortcomings of traditional school desks and chairs in lunchtime rest functionality, various improved designs have emerged in the market, including a lunchtime rest desk and chair disclosed in Chinese patent application number 202221369145.5 cited in this patent. This lunchtime rest desk and chair improves students' rest conditions to some extent by using telescopic rods connected to a support plate under the desk and chair, combined with a rotating backrest, allowing students to rest in a near-lying position during lunchtime rest. However, in the aforementioned prior art, the telescopic rods are located on two sides under the chair. In actual use, due to the large gap between the two telescopic rods, students may place their feet between them. When both legs are between the two rods, and the student loses balance due to tripping, the student's range of motion is limited. This makes it difficult for the student to quickly adjust their body posture (especially the position of their feet) to maintain balance due to the obstruction of the telescopic rods on both sides, making it easier to fall directly to the ground. In such cases, the injury is often more serious, potentially causing abrasions, sprains, or even fractures, seriously affecting the student's health. Utility Model Content

[0005] To address the aforementioned technical problems, the anti-tripping nap chair provided by this utility model can reduce the risk of students tripping over the nap chair.

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

[0007] The anti-tripping nap chair provided by this utility model includes a frame, a base, and a backrest; the base is fixed on the frame; the base has a seat surface for supporting a human body; the seat surface is arranged facing upwards; the backrest is rotatably fixed on the frame; the backrest has a backrest for the human back to lean against; the backrest can change its orientation as the backrest rotates relative to the frame; in normal use, the backrest can face the direction of the seat surface; a telescopic rod is fixedly installed at the lower center of the base; the telescopic rod extends in the direction away from the backrest; the end of the telescopic rod is provided with a support plate assembly for supporting the legs.

[0008] The anti-tripping nap chair provided by this utility model preferably includes a support plate assembly comprising a fixed tube, a first rotating plate, and a second rotating plate; the fixed tube is fixed to the telescopic rod; the extension direction of the fixed tube is perpendicular to the extension direction of the telescopic rod; the tube axis of the fixed tube is horizontal; the first rotating plate includes a first rotating shaft and a first supporting plate; the first supporting plate is fixed to the first rotating shaft; the first rotating shaft is rotatably fixed inside the fixed tube; the second rotating plate includes a second rotating shaft and a second supporting plate; the second supporting plate is fixed to the second rotating shaft; the second rotating shaft is rotatably fixed inside the fixed tube.

[0009] The anti-tripping nap chair provided by this utility model preferably further includes a plurality of fixing bolts; the fixing tube has a plurality of positioning holes in the vertical direction; the first rotating shaft has a first positioning hole in the vertical direction; the second rotating shaft has a second positioning hole in the vertical direction; the fixing bolts are matched with the positioning holes, the first positioning hole, and the second positioning hole; the fixing bolts can be inserted from the positioning hole above the fixing tube, pass through the first positioning hole, and exit from the positioning hole below the fixing tube for fixing; the fixing bolts can be inserted from the positioning hole above the fixing tube, pass through the second positioning hole, and exit from the positioning hole below the fixing tube for fixing.

[0010] The anti-tripping nap chair provided by this utility model preferably has the following features: the first support plate has a first straight plate body; a first arcuate concave plate is provided on the side of the first straight plate body facing away from the telescopic rod; the upper surface of the first arcuate concave plate is concave; the concave surface of the upper surface of the first arcuate concave plate is smoothly connected to the upper surface of the first straight plate body; the second support plate has a second straight plate body; a second arcuate concave plate is provided on the side of the second straight plate body facing away from the telescopic rod; the upper surface of the second arcuate concave plate is concave; the concave surface of the upper surface of the second arcuate concave plate is smoothly connected to the upper surface of the second straight plate body.

[0011] The anti-tripping nap chair provided by this utility model preferably has the first support plate and the second support plate symmetrically fixed on both sides of the telescopic rod.

[0012] This utility model provides an anti-tripping nap chair, relating to the field of school desks and chairs, including a frame, a base, and a backrest; the base is fixed to the frame; the base has a seat surface for supporting a person; the seat surface is upward-facing; the backrest is rotatably fixed to the frame; the backrest has a backrest for the back to lean against; the backrest can change its orientation as the backrest rotates relative to the frame; in normal use, the backrest faces the direction of the seat surface; a telescopic rod is fixedly installed at the lower center of the base; the telescopic rod extends in the direction away from the backrest; the end of the telescopic rod is provided with a support plate assembly for supporting the legs. The anti-tripping nap chair provided by this utility model solves the problem in the prior art where students are easily tripped and injured by nap chairs with leg supports, reducing the risk of students tripping over nap chairs. Attached Figure Description

[0013] The present invention, its features, shape, and advantages will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings. Like reference numerals denote like parts throughout the drawings. The drawings are not intentionally drawn to scale; the focus is on illustrating the gist of the invention.

[0014] Figure 1 This is a schematic diagram of the overall structure of the anti-tripping nap chair provided in Embodiment 1 of this utility model for daily study scenarios.

[0015] Figure 2 This is a schematic diagram of the overall structure of the anti-tripping nap chair provided in Embodiment 1 of this utility model during the lunch break.

[0016] Figure 3 This is a partial structural diagram of the support plate assembly of the anti-tripping nap seat provided in Embodiment 1 of this utility model.

[0017] Figure 4 This is a schematic diagram of the second rotating plate structure of the anti-tripping nap chair provided in Embodiment 1 of this utility model. Detailed Implementation

[0018] The technical solutions of the present utility model will be described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present utility model, and not all of them. Therefore, the detailed description of the embodiments of the present utility model provided in the accompanying drawings is not intended to limit the scope of the claimed utility model, but merely to illustrate selected embodiments of the present utility model. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without inventive effort are within the protection scope of the present utility model.

[0019] Example 1: The anti-tripping nap chair provided in Example 1 of this utility model, such as... Figures 1 to 4 As shown, the device includes a support 1, a base 2, and a backrest 3. The base 2 is fixed to the support 1. The base 2 has a seat surface 21 for supporting a human body. The seat surface 21 is positioned upwards. The backrest 3 is rotatably fixed to the support 1. The backrest 3 has a backrest 31 for the human back to lean against. The backrest 31 can change its orientation as the backrest 3 rotates relative to the support 1. In normal use, the backrest 31 can face the direction of the seat surface 21. A telescopic rod 22 is fixedly installed at the lower center of the base 2. The telescopic rod 22 extends in the direction away from the backrest 3. The end of the telescopic rod 22 is provided with a support plate assembly 4 for supporting the legs.

[0020] The anti-tripping nap chair provided in Embodiment 1 of this utility model meets the needs of two different scenarios: daily study and lunch break. In the daily study scenario, the backrest 31 of the backrest 3 remains vertical, and the telescopic rod 22 and the support plate assembly 4 retract to the bottom of the base 2 and are located within the vertical projection range of the base 2. This design makes the overall appearance of the chair no different from that of an ordinary chair, which can be perfectly integrated into the classroom learning environment without taking up extra aisle space or interfering with students' daily study activities. In the lunch break scenario, the backrest 3 can rotate and be fixed relative to the support 1, causing the backrest 31 to tilt backward. The backrest 3 and the support 1 form an obtuse angle that conforms to ergonomics, thereby providing a suitable and comfortable support angle for the student's back. The telescopic rod 22, located in the middle of the bottom of the base 2, extends in the direction away from the backrest 3, thereby moving the support plate assembly 4 to the front of the base 2 (at this time, the backrest 3 is located behind the base 2). In this way, students can take a nap in a lying position with the help of the support plate assembly 4 supporting their feet, the base 2 supporting their buttocks, and the backrest 3 supporting their back. The existing two-telescopic-bar structure has two problems: First, when a student intends to stand from the outside of the two telescopic bars 22, the presence of the two bars severely compresses the effective standing space for the student's feet, forcing the student to first change their center of gravity, shifting it away from the seat's central axis. However, during this shift, the overall center of gravity of the seat and the student is easily unbalanced, causing the seat to tip over. Second, if a student chooses to stand up between the two telescopic bars 22, and encounters situations such as standing up too suddenly, sudden physical discomfort, or sudden external interference that cause them to stumble or lose their balance momentarily, the extremely limited distance between the two telescopic bars cannot provide sufficient emergency movement space for the student to adjust their posture and regain balance in time. In this case, the student is likely to trip due to obstructed feet, resulting in varying degrees of physical injury such as abrasions, sprains, or even fractures. Compared to the traditional two-telescopic-bar design, this utility model uses a single telescopic bar 22 located in the middle of the lower part of the base 2 to fix the support plate assembly 4. From the perspective of human kinesiology and balance principles, when students need to stand up after lunch break, since the telescopic pole 22 is located in the middle of the base 2, the students' legs can naturally and conveniently stand on both sides of the telescopic pole 22. They can smoothly transition from lying down to standing without going through a complicated and tedious process of adjusting their center of gravity and coordinating their limbs. Moreover, if the students lose their balance instantly, there is enough space on both sides of the single telescopic pole 22 for their feet to adjust and maintain their balance. Therefore, the structure provided in this embodiment can reduce the operational difficulty and potential safety risks during the process of getting up.

[0021] The anti-tripping nap chair provided in Embodiment 1 of this utility model solves the problem in the prior art that students are easily tripped and injured by nap chairs with leg structures, and can reduce the risk of students tripping over nap chairs.

[0022] As a preferred embodiment, in this embodiment, the tray assembly 4 includes a fixed tube 41, a first rotating plate 42, and a second rotating plate 43; the fixed tube 41 is fixed to the telescopic rod 22; the extension direction of the fixed tube 41 is perpendicular to the extension direction of the telescopic rod 22; the tube axis of the fixed tube 41 is horizontal; the first rotating plate 42 includes a first rotating shaft 421 and a first support plate; the first support plate is fixed to the first rotating shaft 421; the first rotating shaft 421 is rotatably fixed inside the fixed tube 41; the second rotating plate 43 includes a second rotating shaft 431 and a second support plate; the second support plate is fixed to the second rotating shaft 431; the second rotating shaft 431 is rotatably fixed inside the fixed tube 41. The tray assembly 4 is connected to the telescopic rod 22, which can extend and retract in the direction away from the backrest 3, driving the tray assembly 4 to move as a whole. In daily study scenarios, the first support plate and the second support plate can be rotated to make them flush with the front end of the telescopic rod 22 and below the vertical projection of the base 2, effectively reducing space occupation. When switching to the lunch break scenario, the telescopic rod 22 extends to send the tray assembly 4 to a suitable position. At this time, the student manually operates the first rotating plate 42 and the second rotating plate 43 to rotate them around their respective rotation axes in the fixed tube 41, adjusting the angle of the first support plate and the second support plate so that the support surface faces upward and extends to the front of the telescopic rod 22 to support the student's legs.

[0023] To specifically achieve the fixation of the first and second support plates after rotation, this embodiment also includes several fixing bolts; the fixing tube 41 has several positioning holes 411 in the vertical direction; the first rotating shaft 421 has a first positioning hole in the vertical direction; the second rotating shaft 431 has a second positioning hole 4311 in the vertical direction; the fixing bolts are matched with the positioning holes 411, the first positioning hole, and the second positioning hole 4311; the fixing bolts can be inserted from the positioning hole 411 above the fixing tube 41, pass through the first positioning hole, and exit from the positioning hole 411 below the fixing tube 41 for fixation; the fixing bolts can be inserted from the positioning hole 411 above the fixing tube 41, pass through the second positioning hole 4311, and exit from the positioning hole 411 below the fixing tube 41 for fixation. By setting multiple positioning holes 411 on the fixed tube 41, the distance between the first positioning hole and the telescopic rod 22 can be changed by moving along the tube axis of the fixed tube 41, thereby realizing the adjustment of the distance between the first support plate and the telescopic rod 22; by setting the extension direction of the positioning holes 411 at different angles, and cooperating with the first positioning hole (compared to the fixed tube 41 after rotation), the angle between the upper surface of the first support plate and the ground can be changed; in this embodiment, it is preferable to have only one positioning hole 411, one first positioning hole vertically penetrating the first rotating shaft 421, and one second positioning hole 4311 vertically penetrating the second rotating shaft 431. The first positioning hole has two different states of being upside down, that is, the first support plate is in two states of being face up and backside up; when it is necessary to adjust the first support plate to the support state of being face up, the first rotating plate 42 is manually rotated so that the first rotating shaft 421 is in The first support plate rotates within the fixed tube 41. When the first support plate reaches the appropriate position with its front side facing upwards, the first positioning hole on the first rotating shaft 421 is aligned with a positioning hole 411 on the fixed tube 41. At this time, the fixing bolt is vertically inserted into the positioning hole 411 above the fixed tube 41. The fixing bolt passes through the first positioning hole and then exits from the positioning hole 411 below the fixed tube 41. The fixing bolt is then tightened to fix the first rotating shaft 421 in this position, so that the first support plate can stably maintain the support state with its front side facing upwards. If the first support plate is to be switched to the reverse side facing upwards, the fixing bolt is first loosened and pulled out. Then, the first rotating plate 42 is manually rotated so that the first rotating shaft 421 continues to rotate 180° within the fixed tube 41. When the first support plate reaches the reverse side facing upwards position, the first positioning hole will be aligned with another corresponding positioning hole 411 on the fixed tube 41. Insert the fixing bolt again into the positioning hole 411 above the fixing tube 41, pass through the first positioning hole and exit from the positioning hole 411 below, and tighten the fixing bolt to fix the first support plate in the reverse side facing upward. The principle of fixing the second support plate with the front side facing upward and the reverse side facing upward is the same.

[0024] As a preferred embodiment, in this embodiment, the first support plate has a first straight plate body 4221; a first arcuate concave plate 4222 is provided on the side of the first straight plate body 4221 facing away from the telescopic rod 22; the upper surface of the first arcuate concave plate 4222 is concave; the concave surface of the upper surface of the first arcuate concave plate 4222 is smoothly connected to the upper surface of the first straight plate body 4221; the second support plate has a second straight plate body 4321; a second arcuate concave plate 4322 is provided on the side of the second straight plate body 4321 facing away from the telescopic rod 22; the upper surface of the second arcuate concave plate 4322 is concave; the concave surface of the upper surface of the second arcuate concave plate 4322 is smoothly connected to the upper surface of the second ... The smooth transition on the upper surface of plate 4321, along with the concave design of the first and second arc-shaped concave plates 4222 and 4322, better conforms to the natural curve of a student's legs, especially the calves. When a student places their legs on the support plate, the concave surface increases the contact area between the legs and the support plate, preventing excessive local pressure concentration and effectively distributing the pressure on the legs, reducing discomfort caused by prolonged support. On the other hand, during lunch breaks, many students subconsciously worry about slipping off their chairs due to turning over or unconscious limb movements. This underlying anxiety often interferes with their ability to enter a deep, relaxed sleep state. The lateral restraint function of the first and second arc-shaped concave plates 4222 and 4322 allows students to directly feel their bodies being supported and protected, greatly reducing their fear of falling and improving sleep quality.

[0025] As a preferred embodiment, in this case, the first support plate and the second support plate are symmetrically fixed on both sides of the telescopic rod 22. The symmetrical arrangement of the first and second support plates ensures that the center of gravity of the student and the chair as a whole is stable near the central axis when the student supports their legs through the first and second support plates respectively, thus creating a safe and stable lunch break environment for the student.

[0026] In summary, this utility model provides an anti-tripping nap chair, relating to the field of school desks and chairs, including a frame, a base, and a backrest; the base is fixed to the frame; the base has a seat surface for supporting a person; the seat surface is upward-facing; the backrest is rotatably fixed to the frame; the backrest has a backrest for the back to lean against; the backrest can change its orientation as the backrest rotates relative to the frame; in normal use, the backrest faces the direction of the seat surface; a telescopic rod is fixedly installed at the lower center of the base; the telescopic rod extends in the direction away from the backrest; the end of the telescopic rod is provided with a support plate assembly for supporting the legs. The anti-tripping nap chair provided by this utility model solves the problem in the prior art where students are easily tripped and injured by nap chairs with leg supports, reducing the risk of students tripping over nap chairs.

[0027] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. Any equivalent structural transformations made based on the contents of the present utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of the present utility model.

Claims

1. A trip-proof lunch break chair, characterized in that, The chair comprises a support, a base and a backrest. The base is fixed on the support, and has a seat surface for bearing a human body, the seat surface being upwardly arranged; The backrest is rotatably fixed on the support, and has a backrest surface for the human body to lean against, the backrest surface being capable of changing its orientation with the rotation of the backrest relative to the support; In a normal use state, the backrest surface is capable of facing the direction of the seat surface; A telescopic rod is fixedly arranged at a middle position below the base, and the telescopic direction of the telescopic rod is away from the backrest; An end of the telescopic rod is provided with a supporting plate assembly for supporting a leg.

2. The stumble-proof lunch seat according to claim 1, wherein The supporting plate assembly comprises a fixed tube, a first rotating plate and a second rotating plate; The fixed tube is fixed on the telescopic rod, and the extension direction of the fixed tube is perpendicular to the telescopic direction of the telescopic rod, and the tube axis of the fixed tube is horizontal; The first rotating plate comprises a first rotating shaft and a first supporting plate, and the first supporting plate is fixed on the first rotating shaft; The first rotating shaft is rotatably fixed in the fixed tube; The second rotating plate comprises a second rotating shaft and a second supporting plate, and the second supporting plate is fixed on the second rotating shaft; The second rotating shaft is rotatably fixed in the fixed tube.

3. The stumble-proof lunch seat according to claim 2, wherein A plurality of fixing bolts are further included; A plurality of positioning holes are vertically arranged on the fixed tube; A first positioning hole is vertically arranged on the first rotating shaft; A second positioning hole is vertically arranged on the second rotating shaft; The fixing bolts are matched with the positioning holes, the first positioning hole and the second positioning hole; The fixing bolts are inserted from the positioning holes above the fixed tube, pass through the first positioning hole and are fixed by being inserted from the positioning holes below the fixed tube; The fixing bolts are inserted from the positioning holes above the fixed tube, pass through the second positioning hole and are fixed by being inserted from the positioning holes below the fixed tube.

4. The anti-trip lunch chair according to claim 2, wherein The first supporting plate has a first straight plate body, and a first arc concave plate is arranged on the side of the first straight plate body away from the telescopic rod; The upper surface of the first arc concave plate is concave, and the upper surface of the first arc concave plate is smoothly and transitionally connected with the upper surface of the first straight plate body; The second supporting plate has a second straight plate body, and a second arc concave plate is arranged on the side of the second straight plate body away from the telescopic rod; The upper surface of the second arc concave plate is concave; The upper surface of the second arc concave plate is smoothly and transitionally connected with the upper surface of the second straight plate body.

5. The stumble-proof lunch seat according to claim 2, wherein The first supporting plate and the second supporting plate are symmetrically fixed on the two sides of the telescopic rod.

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