Polyurethane back cushion

Abstract

The utility model discloses a polyurethane back cushion which comprises a back cushion body, the back cushion body comprises a base plate and a polyurethane cushion, a containing cavity is formed between the base plate and the polyurethane cushion, and a plurality of buffering assemblies are evenly installed in the containing cavity between the base plate and the polyurethane cushion. The buffering assembly comprises springs, rubber columns and supporting plates, the supporting plates are installed at the ends, located on the polyurethane pads, of the rubber columns, and the outer sides of the rubber columns are sleeved with the springs. According to the buffer device, the buffer assembly comprises the spring, the rubber column and the supporting plate, the supporting plate is installed at the end, located on the polyurethane pad, of the rubber column, the spring is sleeved on the outer side of the rubber column, the rubber column is an annular rubber column, the spring is a corrugated spiral spring, and the corrugated spiral spring is adopted, so that a small thickness can be achieved, and a good buffer effect is achieved; and through the combined action of the spring and the rubber column, the buffering effect of the buffering assembly is improved, and the use comfort is improved.

Description

Technical Field

[0001] This utility model relates to the field of polyurethane cushion technology, specifically a polyurethane cushion. Background Technology

[0002] Polyurethane foam is foam with a density of less than 18 kg / m³. 3 The following low-density PU has the characteristic of not easily deforming after long-term use. It is usually processed into cushions. Some people put special lumbar support cushions on their car seats to improve the comfort of passengers when traveling for long periods of time.

[0003] The existing announcement number CN218661481U discloses a non-deformable polyurethane foam backrest for automobiles, relating to the field of automotive supplies. It includes a backrest frame, a polyurethane foam layer installed inside the backrest frame, and a pad cover installed outside the polyurethane foam layer. The pad cover is connected to the backrest frame. The backrest frame contains a lumbar support and a displacement mechanism for moving the lumbar support. One side of the lumbar support extends to the outside of the pad cover. The displacement mechanism includes a connecting block located inside the backrest frame and an adjustment component for moving the connecting block. This non-deformable polyurethane foam backrest for automobiles, through the cooperation of the various components of the displacement mechanism, allows for flexible adjustment of the lumbar support position, thereby improving comfort for different users. Furthermore, the cooperation of the various components of the fixing mechanism facilitates the disassembly and assembly of the lumbar support, making it easy to clean dust or foreign objects from the gap between the lumbar support and the pad cover.

[0004] Existing backrests have poor cushioning performance, resulting in relatively poor comfort. To address this, we propose a polyurethane backrest cushion. Utility Model Content

[0005] The purpose of this invention is to provide a polyurethane cushion to solve the problems in the prior art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a polyurethane cushion, comprising a cushion body, the cushion body comprising a substrate and a polyurethane pad, a receiving cavity being provided between the substrate and the polyurethane pad, and a plurality of buffer components being uniformly installed in the receiving cavity between the substrate and the polyurethane pad; the buffer components comprising a spring, a rubber column and a support plate, the support plate being installed at one end of the rubber column located on the polyurethane pad, and a spring being sleeved on the outside of the rubber column.

[0007] Preferably, the rubber column is an annular rubber column, and the spring is a corrugated helical spring.

[0008] Preferably, the polyurethane pad includes a top backrest, an upper backrest, an arc-shaped limiting part, and a pad body. The pad body has arc-shaped limiting parts on both sides, an upper backrest at the top of the pad body, and a top backrest at the top of the upper backrest.

[0009] Preferably, the thickness of the arc-shaped limiting part is greater than the thickness of the cushion body, the thickness of the outer side of the arc-shaped limiting part is greater than the thickness of the inner side of the arc-shaped limiting part, and the cross-section of the arc-shaped limiting part is an arc-shaped structure.

[0010] Preferably, the front surface of the polyurethane pad is provided with multiple raised strips at equal intervals, and the top backrest, upper backrest, arc-shaped limiting part, pad body and raised strips are an integral structure.

[0011] Preferably, the substrate is made of plastic.

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

[0013] 1. The cushioning assembly includes a spring, a rubber column, and a support plate. The support plate is installed at one end of the polyurethane pad, and a spring is sleeved on the outside of the rubber column. The rubber column is a ring-shaped rubber column, and the spring is a corrugated helical spring. By using a corrugated helical spring, a smaller thickness can be achieved to achieve a better cushioning effect. Through the combined action of the spring and the rubber column, the cushioning effect of the cushioning assembly is improved, and the comfort of use is enhanced.

[0014] 2. The front surface of the polyurethane pad has multiple raised strips at equal intervals. The top backrest, upper backrest, arc-shaped limiting part, pad body and raised strips are integrated into one structure. The raised strips can play a massage role on the one hand, and prevent the body from completely sticking to the backrest and causing the problem of not being breathable on the other hand. Attached Figure Description

[0015] 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:

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2 This is the front view of this utility model;

[0018] Figure 3 This is a cross-sectional view of the present invention;

[0019] Figure 4 This is a schematic diagram of the structure of the buffer assembly of this utility model;

[0020] Figure 5 This is a schematic diagram of the structure of the spring of this utility model.

[0021] In the figure: 1. Cushion body; 11. Base plate; 12. Receiving cavity; 13. Buffer assembly; 14. Polyurethane pad; 131. Spring; 132. Rubber column; 133. Support plate; 141. Top backrest; 142. Upper backrest; 143. Arc-shaped limiting part; 144. Cushion body; 145. Raised strip. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model. Therefore, the following detailed description of the embodiments of this utility model provided in the accompanying drawings is not intended to limit the scope of the claimed utility model, but merely to represent selected embodiments of this utility model.

[0023] Please see Figures 1-5 In this embodiment of the utility model, a polyurethane cushion includes a cushion body 1, which includes a base plate 11 and a polyurethane pad 14. The base plate 11 is made of plastic. A receiving cavity 12 is provided between the base plate 11 and the polyurethane pad 14. A plurality of buffer components 13 are uniformly installed in the receiving cavity 12 between the base plate 11 and the polyurethane pad 14. The buffer component 13 includes a spring 131, a rubber column 132, and a support plate 133. The support plate 133 is installed at one end of the rubber column 132 located on the polyurethane pad 14. The spring 131 is sleeved on the outside of the rubber column 132. The rubber column 132 is an annular rubber column, and the spring 131 is a corrugated helical spring. By using a corrugated helical spring, a smaller thickness can achieve a better cushioning effect. Through the combined action of the spring 131 and the rubber column 132, the cushioning effect of the buffer component is improved, and the comfort of use is improved.

[0024] The polyurethane pad 14 includes a top backrest 141, an upper backrest 142, an arc-shaped limiting part 143, and a pad body 144. Arc-shaped limiting parts 143 are provided on both sides of the pad body 144, and the upper backrest 142 is provided at the top of the pad body 144. The top backrest 141 is provided at the top of the upper backrest 142. The thickness of the arc-shaped limiting part 143 is greater than the thickness of the pad body 144, and the thickness of the outer side of the arc-shaped limiting part 143 is greater than the thickness of the inner side. The cross-section of the arc-shaped limiting part 143 is an arc-shaped structure. Multiple raised strips 145 are evenly spaced on the front surface of the polyurethane pad 14. The top backrest 141, upper backrest 142, arc-shaped limiting part 143, pad body 144, and raised strips 145 are an integrated structure. The raised strips provide a massage effect while preventing the body from completely pressing against the backrest, thus avoiding a lack of breathability.

[0025] The working principle of this utility model is as follows: The buffer assembly 13 includes a spring 131, a rubber column 132, and a support plate 133. The support plate 133 is installed at one end of the polyurethane pad 14. The spring 131 is sleeved on the outside of the rubber column 132. The rubber column 132 is an annular rubber column, and the spring 131 is a corrugated helical spring. By using a corrugated helical spring, a smaller thickness can achieve a better buffering effect. Through the combined action of the spring 131 and the rubber column 132, the buffering effect of the buffer assembly is improved, and the comfort of use is improved.

[0026] 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 polyurethane cushion, comprising a cushion body (1), characterized in that: The cushion body (1) includes a base plate (11) and a polyurethane pad (14). A receiving cavity (12) is provided between the base plate (11) and the polyurethane pad (14). Multiple buffer components (13) are uniformly installed in the receiving cavity (12) between the base plate (11) and the polyurethane pad (14). The buffer component (13) includes a spring (131), a rubber column (132) and a support plate (133). The support plate (133) is installed at one end of the rubber column (132) on the polyurethane pad (14). The spring (131) is sleeved on the outside of the rubber column (132).

2. A polyurethane cushion according to claim 1, characterized in that: The rubber column (132) is an annular rubber column, and the spring (131) is a corrugated helical spring.

3. A polyurethane cushion according to claim 1, characterized in that: The polyurethane pad (14) includes a top backrest (141), an upper backrest (142), an arc-shaped limiting part (143), and a pad body (144). The pad body (144) is provided with arc-shaped limiting parts (143) on both sides, and the upper backrest (142) is provided at the top of the pad body (144). The upper backrest (141) is provided at the top of the upper backrest (142).

4. A polyurethane cushion according to claim 3, characterized in that: The thickness of the arc-shaped limiting part (143) is greater than the thickness of the cushion body (144), the thickness of the outer side of the arc-shaped limiting part (143) is greater than the thickness of the inner side of the arc-shaped limiting part (143), and the cross-section of the arc-shaped limiting part (143) is an arc-shaped structure.

5. A polyurethane cushion according to claim 3, characterized in that: The polyurethane pad (14) has multiple raised strips (145) evenly spaced on its front surface. The top backrest (141), upper backrest (142), arc-shaped limiting part (143), pad body (144) and raised strips (145) are an integral structure.

6. A polyurethane cushion according to claim 1, characterized in that: The substrate (11) is made of plastic.

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