Turnover type cushion and seat thereof
By adopting a double-layer flip-up seat cushion, the inner core is wrapped by the inner shaft and outer shell, which solves the safety hazard caused by the exposed rebound mechanism and improves the safety and aesthetics of the seat cushion.
Patent Information
- Application Number
- CN202520669763.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-10
- Publication Date
- 2026-03-03
- Estimated Expiration
- 2035-04-10
AI Technical Summary
The rebound mechanism of existing flip-up seats is exposed, which can easily cause safety hazards such as scratches, abrasions, tripping and pinching to people passing by, and also takes up a lot of space.
The flip-up seat cushion features a double-layer structure. The inner shaft is installed in the inner core, and the inner core and outer shell are flipped by a limited range of rotational movement. The inner core is made of rigid materials such as aluminum plate and steel plate, while the outer shell is foamed and injection molded to form a rubber-coated surface. The inner shaft and the outer shell form an integral wrapping structure to prevent parts from being exposed.
It improves the safety and aesthetics of the seat cushion, reduces safety hazards such as scratches, abrasions and tripping, and does not take up too much space.
Smart Images
Figure CN223958552U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of seat cushion technology, and in particular to a flip-up seat cushion and its seat. Background Technology
[0002] Flip-up seats (also known as retractable seats) automatically flip up and fold back when not in use, freeing up more aisle space for easy access. They are widely used in various meeting places that can accommodate a large number of people, such as large classrooms in schools and training institutions, auditoriums, conference rooms and training rooms in various units, as well as public waiting areas in airports, train stations and hospitals.
[0003] Currently, most commonly used flip-up chairs have exposed flip-up mechanisms, meaning a spring-loaded mechanism is added to the bottom of the seat. When the seat is flipped up, the spring-loaded mechanism faces directly towards the legs of passersby. These mechanisms are generally quite large, taking up considerable seat space. Furthermore, due to mechanical reasons, the spring-loaded mechanism experiences significant stress, and to ensure its load-bearing capacity, it is typically made of metal. Even with padded sides, the bottom spring-loaded mechanism cannot be completely concealed. Therefore, due to these factors, the large and exposed spring-loaded mechanism can easily cause scratches, abrasions, tripping, and pinching injuries to users passing by. Utility Model Content
[0004] In view of the shortcomings of the existing technology, this utility model provides a flip-up cushion and its seat, which is safer.
[0005] To achieve the above objectives, the present invention adopts the following technical solution:
[0006] The first aspect of this utility model provides a flip-up seat cushion, including an inner shaft, an inner core, and a shell for wrapping the inner core. The inner shaft is installed in the inner core, and the inner shaft can drive the inner core and the shell to flip through a limited range of rotational movement.
[0007] Based on the above-mentioned technical means, the flip-up seat cushion of this application is essentially a double-layer structure. The outer shell encloses the inner core and inner shaft to avoid exposing the parts and make the whole structure safer. The inner shaft of this application rotates within a limited range under the action of its own structural characteristics, so that the seat cushion can flip up to meet the needs of human sitting posture, thereby achieving the purpose of sitting posture use and storage.
[0008] Furthermore, the inner core includes an integrally formed core plate and an inner bushing, with the inner shaft installed in the inner bushing.
[0009] Furthermore, reinforcing ribs are installed on the core board.
[0010] Furthermore, the inner shaft has a radial groove on its outer circumferential surface.
[0011] Furthermore, there are at least two grooves distributed along the axial direction of the inner shaft.
[0012] Furthermore, it also includes a torsion spring that matches the groove.
[0013] Furthermore, the outer surface of the outer shell is coated with rubber.
[0014] The second aspect of this utility model provides a seat, including the aforementioned flip-up seat cushion.
[0015] Furthermore, it also includes a chair frame, with a rotatable seat cushion rotatably attached to the frame.
[0016] Furthermore, a cover is installed at the connection between the flip-up seat cushion and the chair frame.
[0017] The beneficial technical effects of this utility model are as follows:
[0018] The flip-up cushion and seat have no exposed parts on the entire outer surface, making them safer and more aesthetically pleasing. When used in public places and when users walk between multiple rows of seats, the safety hazards such as scratches, abrasions and tripping are lower.
[0019] This utility model of a flip-up seat cushion uses a double-layer structure to enclose the inner shaft used for rotation, which not only enables the seat cushion to automatically flip and be stored on the seat back, but also improves the comfort of the seat cushion. Attached Figure Description
[0020] The accompanying drawings, incorporated in and forming part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application. It is obvious that the drawings described below are merely some embodiments of this application, and those skilled in the art can obtain other drawings based on these drawings without inventive effort. In the drawings:
[0021] Figure 1 This is a schematic diagram of the inner core structure shown in one embodiment of this application;
[0022] Figure 2 This is a schematic diagram of the outer shell structure shown in one embodiment of this application;
[0023] Figure 3 This is a schematic diagram of a flip-up seat cushion structure according to an embodiment of this application;
[0024] Figure 4 This is a schematic diagram of the inner bushing and inner shaft connection structure shown in one embodiment of this application;
[0025] Figure 5 This is an exploded view of a seat structure according to an embodiment of this application;
[0026] Figure 6This is a diagram illustrating a seating usage scenario according to an embodiment of this application.
[0027] Figure Labels
[0028] 1: Inner shaft; 2: Inner core; 3: Outer shell; 21: Core plate; 22: Inner shaft sleeve; 23: Reinforcing rib; 11: Slide groove; 4: Torsion spring; 5: Chair frame. Detailed Implementation
[0029] Unless otherwise defined, all technical and / or scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. It should be understood that certain features of this invention (described in the context of separate embodiments for clarity) may also be provided in combination in a single embodiment. Conversely, multiple features of this invention (described in the context of a single embodiment for brevity) may also be provided separately or in any suitable combination or, where appropriate, in any other described embodiment of this invention. Certain features described in the context of various embodiments will not be considered essential features of those embodiments unless the embodiment is inoperable without those elements. The present invention is further illustrated below by specific examples; however, it should be noted that the specific process conditions and results described in the embodiments of this invention are for illustrative purposes only and should not be construed as limiting the scope of protection of this invention. All equivalent changes or modifications made in accordance with the spirit and essence of this invention should be covered within the scope of protection of this invention.
[0030] like Figure 3 As shown, this utility model provides a flip-type seat cushion, including an inner shaft 1, an inner core 2, and a shell 3 for wrapping the inner core 2. The inner shaft 1 is installed in the inner core 2, and the inner shaft 1 can drive the inner core 2 and the shell 3 to flip through a limited range of rotational movement.
[0031] Furthermore, such as Figure 1 As shown, the inner core 2 includes an integrally formed core plate 21 and an inner bushing 22, with the inner shaft 1 installed in the inner bushing 22. To ensure the load-bearing capacity of the cushion, the inner core 2 is made of a rigid material, such as aluminum plate, steel plate, titanium alloy plate, copper plate, nickel plate, zinc plate, and 545 steel. Considering cost, stainless steel and aluminum alloy are preferred materials for the inner core 2. The integral forming method of the inner core 2 includes, but is not limited to, casting and metal welding. Furthermore, to improve the breathability and lightweight of the cushion, based on mechanical principles, multiple ventilation holes can be formed on the core plate 21 without affecting the load-bearing capacity.
[0032] Furthermore, the outer edge of the core plate 21 in this application is smooth, and the size of the inner bushing 22 matches the size of the inner shaft 1, providing both accommodating space for the inner shaft 1 and installation space for components such as connectors, thus ensuring that the inner shaft 1 and the inner bushing 22 are connected together. The connectors in this application include, but are not limited to, bolts and grooved connectors.
[0033] Furthermore, such as Figure 1 As shown, reinforcing ribs 23 are installed on the core plate 21. This application improves the overall stability and load-bearing capacity of the inner core 2 through the reinforcing ribs 23, preventing deformation or damage to the inner core 2 under significant external forces. Furthermore, installing reinforcing ribs 23 at the bottom of the core plate 21 can improve the strength and rigidity of the inner core 2 without significantly increasing the overall weight, which is beneficial for the lightweight improvement of the inner core 2. Moreover, the installation methods of the reinforcing ribs 23 on the core plate 21 include, but are not limited to, welding, bolting, bonding, and combined fixing. The number, installation position, and shape of the reinforcing ribs 23 are set according to actual needs; for example, two streamlined reinforcing ribs 23 are installed at intervals at the connection between the inner bushing 22 and the core plate 21. More preferably, the reinforcing ribs 23 can be triangular, with their width gradually narrowing from near the inner bushing 22 to away from the inner bushing 22.
[0034] Furthermore, such as Figure 4 As shown, the inner shaft 1 has a radially formed groove 11 on its outer circumferential surface, and the flip-up seat cushion also includes a torsion spring 4 that matches the groove 11. Furthermore, the installation position of the torsion spring 4 matches the position of the groove 11. Both ends of the torsion spring 4 are mounted on the inner shaft sleeve 22, and the connecting piece passes through the inner shaft sleeve 22, connects to the inner shaft 1, and is located in the groove 11. The groove 11 serves two purposes: firstly, it changes the direction of the force applied by the torsion spring 4; secondly, during the flipping process of the inner core 2, the torsion spring 4 drives the inner shaft 1 and inner shaft sleeve 22 to rotate, thereby causing the seat cushion to rotate within the path of the groove 11; thirdly, it controls the limited amplitude of rotation, with the length of the groove 11 path determining the amplitude of rotation; and fourthly, the cooperation between the groove 11 and the connecting piece ensures the stability of the seat cushion after flipping.
[0035] Furthermore, there are at least two grooves 11 distributed along the axial direction of the inner shaft 1. The path length and number of grooves 11 in this application are set according to actual needs, for example, the path length of the groove 11 is 1 / 3 of the radial circumference of the outer circumference of the inner shaft 1. The number of grooves 11 in this application matches the number of torsion springs 4, and torsion springs 4 with suitable torque and torque magnitude are selected according to the actual need for the slow rotation of the seat cushion.
[0036] like Figure 2 As shown, further, in order to provide a soft and comfortable sitting feel, the outer shell 3 of this application adopts an integral foam injection molding of the built-in inner core 2. The molding method and the raw materials used are all existing and do not involve any improvement to the process.
[0037] Specifically, the manufacturing process of the outer shell 3 and the seat cushion of this application is as follows:
[0038] This application uses ethylene-vinyl acetate copolymer, thermoplastic polyurethane, thermoplastic elastomer, polyethylene, or polypropylene as plastic raw materials, and physical foaming agents such as carbon dioxide and nitrogen, or chemical foaming agents such as azoformamide and azobisisobutyronitrile, as foaming agent raw materials. The plastic raw materials and foaming agents are mixed in a mixer to ensure that the foaming agent is evenly distributed in the plastic raw materials. The mixed raw materials are added to the barrel of an injection molding machine. Under the shear force of the screw and the action of the heating coil, the raw materials are heated and melted into a molten state. The molten plastic mixture is injected into the mold cavity containing the inner core 2 under high pressure and high speed. Due to the sudden drop in pressure, the supersaturated gas in the melt segregates out, forming a large number of tiny bubbles. The bubbles expand rapidly, filling the entire mold cavity with the plastic melt to form a seat plate with a microporous structure. The mold is equipped with a cooling system, which uses cooling water or cooling air to quickly cool the mold, allowing the plastic product to solidify and shape into the outer shell 3. After the outer shell 3 has completely cooled and solidified, the mold is opened and the finished seat cushion is removed.
[0039] Furthermore, the thickness and size of the outer shell 3 of this application are set according to actual usage requirements, but its thickness can ensure that the inner core 2 and its reinforcing ribs 23 do not protrude outwards.
[0040] Furthermore, the core board 21 of this application has ventilation holes. When the core board 21 is placed in the mold for injection molding, the plastic and foaming agent enter the ventilation holes and form an adhesive state, which can make the core board 21 and the outer shell 3 more firmly bonded, making the core board 21 less likely to be exposed and the overall cushion safer.
[0041] Furthermore, thanks to the foaming agent and plastic raw materials, the outer surface of the outer casing 3 of this application is a rubber-coated surface. The outer casing 3 of this application not only possesses reliable strength that meets standards but also offers a soft and comfortable seating experience. When the cushion automatically flips and rebounds after use, the side of the cushion facing the aisle (i.e., the user) is a rubber-coated surface with moderate firmness, featuring no exposed metal, screw components, or sharp protrusions. The entire cushion has a smooth, rounded shape with a gentle transition. Even if the user passes quickly through the aisle, there are no safety hazards such as scratches, abrasions, or tripping.
[0042] Furthermore, the outer shell 3 of this application has a rubber-coated surface with an ergonomic curved shape. Compared to existing auditorium seats with soft padding installed separately on the seat board, the seat cushion of this application is integrally molded, making it less prone to falling off and damage. Moreover, the surface is made of plastic, making it easier to clean and more suitable for public places.
[0043] like Figure 5 and Figure 6 As shown, this utility model also provides a seat, including the above-mentioned flip-up seat cushion.
[0044] Furthermore, the seat also includes a seat frame 5, to which a flip-up seat cushion is rotatably connected. The seat frame 5 of this application can be any structure with stable support, such as a triangular seat frame 5, etc., and its materials include, but are not limited to, stainless steel, aluminum alloy, iron and zinc alloy, etc., and its forming methods include, but are not limited to, integral molding, splicing and welding, etc.
[0045] Furthermore, this application connects the flip-up seat cushion to the chair frame 5 via the inner shaft 1. Specifically, each end of the inner shaft 1 is provided with a fixing bushing, and the two ends of the inner shaft 1 are rotatably connected to the chair frame 5 through the fixing bushings. The fixing bushings used in this application are existing commercially available products, which are cylindrical mechanical parts, and their structure and specific fixing method will not be described in detail here.
[0046] Furthermore, a cover is installed at the connection point between the flip-up seat cushion and the chair frame 5. This application installs a cover at the connection point between the fixed bushing and the chair frame 5, which fits tightly with the seat cushion shell 3 to prevent users' fingers or other objects from accidentally getting stuck in the seat during use, thus making the seat safer and more reliable. The installation methods for the cover include, but are not limited to, bolt connections and snap-fit connections.
[0047] Furthermore, the seat in this application also includes a backrest, the material of which includes, but is not limited to, plastic, stainless steel, and soft upholstery. The top of the backrest can be provided with a pen slot for placing pens. With the help of the pen slot, the pens are placed more stably and will not easily slip and fall on a person, thus improving safety.
[0048] Furthermore, the seats in this application can be for single or multiple people.
[0049] Furthermore, the flipping mechanism (i.e., inner shaft 1) of the seat cushion in this application is completely built-in, and the flipping mechanism is not visible on the outside of the entire seat cushion. The side of the bottom that flips up towards the user has a soft outer covering and is small in size, so it does not take up too much space, which can reduce safety hazards such as scratches, abrasions, and pinching. The seat in this application is suitable for public areas such as classrooms and waiting halls, as well as public places such as school auditoriums, training institutions, hospitals, airports, train stations, and government service windows.
[0050] The above embodiments are merely illustrative of the principles and effects of this utility model and are not intended to limit the scope of this utility model. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this utility model. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model should still be covered by the claims of this utility model.
Claims
1. A flip-up seat cushion, characterized in that, It includes an inner shaft (1), an inner core (2), and a shell (3) for enclosing the inner core (2). The inner shaft (1) is installed in the inner core (2). The inner shaft (1) can drive the inner core (2) and the shell (3) to rotate through a limited range of rotation.
2. The flip-up seat cushion according to claim 1, characterized in that, The inner core (2) includes an integrally formed core plate (21) and an inner bushing (22), with the inner shaft (1) installed in the inner bushing (22).
3. The flip-up seat cushion according to claim 2, characterized in that, The core board (21) is fitted with reinforcing ribs (23).
4. The flip-up seat cushion according to claim 1, 2 or 3, characterized in that, The inner shaft (1) has a radial groove (11) on its outer circumference.
5. The flip-up seat cushion according to claim 4, characterized in that, There are at least two grooves (11) and they are distributed along the axial direction of the inner shaft (1).
6. The flip-up seat cushion according to claim 5, characterized in that, It also includes a torsion spring (4) that matches the groove (11).
7. The flip-up seat cushion according to claim 1, 2, 3, 5 or 6, characterized in that, The outer surface of the outer shell (3) is coated with rubber.
8. A type of seat, characterized in that, Including the flip-up seat cushion as described in any one of claims 1 to 7.
9. The seat according to claim 8, characterized in that, It also includes a chair frame (5), with a flip-up seat cushion rotatably attached to the chair frame (5).
10. The seat according to claim 9, characterized in that, A cover is installed at the connection between the flip-up seat cushion and the chair frame (5).