Sponge cushion and seat
By setting a recessed structure and non-weight-reducing area on the lower surface of the foam cushion, combined with molded foam material and serpentine springs, the contradiction between high comfort and low cost is resolved, achieving uniform force distribution and improved comfort.
Patent Information
- Application Number
- CN202423083064.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-12
- Publication Date
- 2025-11-25
- Estimated Expiration
- 2034-12-12
AI Technical Summary
Existing technologies struggle to meet consumer demand for high comfort while controlling production costs, especially given the scarcity of high-quality molded foam materials.
Design a foam seat cushion that creates weight-reducing and non-weight-reducing zones by setting multiple recessed structures on the lower surface, and combines molded foam material, thickened sections, and serpentine springs to improve comfort and reduce costs.
It achieves uniform force distribution during support, reduces initial stiffness, enhances the user's softness and envelopment, and reduces weight and cost.
Smart Images
Figure CN223585594U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of furniture, in particular to a sponge cushion and a seat. BACKGROUND
[0002] With the development of the seat industry, the comfort requirements of seats are getting higher and higher, and the structure improvement of improving the sitting feeling of seats is endless, covering various changes from internal filling materials to external coating layers. However, high-quality molded sponge materials that can balance between comfort and cost are still relatively scarce, and how to meet the needs of consumers for high comfort while controlling production costs is still an important challenge for manufacturers.
[0003] Therefore, it is necessary to design a sponge cushion and a seat to solve the above technical problems. CONTENT OF THE INVENTION
[0004] The present application provides a sponge cushion and a seat, which improves the sustained static comfort, breathability, cost reduction and weight reduction.
[0005] According to a first aspect of the embodiments of the present application, a sponge cushion is provided, which comprises a lower surface and an upper surface arranged oppositely; the lower surface is formed with a plurality of recessed structures, the lower surface comprises a central region, a left side region and a right side region arranged side by side in the front-rear direction, and the recessed structures are symmetrically arranged in the left side region and the right side region to form at least two weight reduction regions.
[0006] Further, the central region is a non-weight reduction region.
[0007] Further, the width of the central region is not greater than 80mm, and the material of the sponge cushion is a molded sponge.
[0008] Further, the plurality of recessed structures have a plurality of shapes and are arranged at intervals, each of the recessed structures has at least one inclined edge arranged obliquely relative to the front-rear direction and at least two straight edges arranged in the front-rear direction or the left-right direction; and the angle between the inclined edge and the front-rear direction is 45 degrees.
[0009] Further, the width of the left side region and the right side region is greater than the width of the central region; the lower surface further comprises a left edge region and a right edge region located outside the left side region and the right side region respectively; the left edge region and the right edge region are non-weight reduction regions and their widths are close to the width of the central region.
[0010] Further, the lower surface further comprises a front edge region; the front edge region is arranged at the front of the left side region, the right side region and the center region; the front edge region is a non-weight-reducing region; the width of the front edge region is the same as the width of the sponge seat cushion, and the length of the front edge region is not greater than 75 mm.
[0011] Further, the lower surface further comprises a rear edge region; the rear edge region is arranged at the rear of the left side region, the right side region and the center region; the width of the rear edge region is the same as the width of the sponge seat cushion, and the length of the front edge region is less than the length of the rear edge region.
[0012] Further, the plurality of recessed structures are arranged in a lattice pattern in the left side region and the right side region; the spacing of the plurality of recessed structures in the front-rear direction and the left-right direction is the same; the plurality of recessed structures are the same shape.
[0013] Further, the recessed structure is a square, a rhombus, a rectangle or a circle.
[0014] Further, the recessed structure comprises a bottom surface and a side surface; the connection between the side surface and the lower surface and the bottom surface is provided with a circular arc chamfer; the side surface is arranged inclined relative to the lower surface, and the opening area of the recessed structure on the lower surface is greater than the area of the bottom surface.
[0015] Further, the front of the lower surface is provided with a thickening portion, the width of the thickening portion is the same as the width of the sponge seat cushion; the thickening portion has a structure of high in the middle and low at the front and rear, and the highest point of the thickening portion is arranged in a non-weight-reducing region.
[0016] Further, the center region is also provided with recessed structures, and the recessed structures are symmetrically distributed relative to the center line of the sponge seat cushion.
[0017] Further, part of the recessed structures span the left side region, the right side region and the center region, and part of the recessed structures are arranged only in the left side region or the right side region; wherein the middle part of the recessed structures spanning the three regions protrudes forward relative to the two sides.
[0018] Further, the plurality of recessed structures comprise a zigzag or wave-shaped structure; the middle part of the recessed structures spanning the three regions is a straight section and is arranged in the left-right direction, and the two sides are zigzag or wave-shaped and are arranged as a whole inclined backward; the width of the straight section is greater than the width of the center region.
[0019] Further, the recess structure arranged across three regions includes a two-segment linear structure, the recess structure arranged only in the left region or the right region is a linear structure, and the linear structures are both inclined relative to the front-rear direction.
[0020] According to a second aspect of the embodiments of the present specification, a chair is provided, including the sponge cushion and the seat frame of the first aspect, and a plurality of serpentine springs are arranged on the seat frame along the front-rear direction, one of the serpentine springs is arranged below the central region, and the other serpentine springs are symmetrically arranged in the left region and the right region.
[0021] The present application has the following beneficial effects: the groove structure formed by the recess structure can realize uniform stress and reduce initial hardness when supporting, further improve the comfort factor, and improve the softness and wrapping feeling of the user after sitting.
[0022] It should be understood that the above general description and the following detailed description are only exemplary and explanatory, and cannot limit the present specification. BRIEF DESCRIPTION OF DRAWINGS
[0023] The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments consistent with the present specification and serve to explain the principles of the present specification together with the specification.
[0024] Figure 1 is a bottom view of the first embodiment of the sponge cushion of the present application;
[0025] Figure 2 is Figure 1 is a perspective view of the sponge cushion;
[0026] Figure 3 is a side view of the sponge cushion of the present application;
[0027] Figure 4 is a perspective view of the second embodiment of the sponge cushion of the present application;
[0028] Figure 5 is a perspective view of the third embodiment of the sponge cushion of the present application;
[0029] Figure 6 is a perspective view of the fourth embodiment of the sponge cushion of the present application;
[0030] Figure 7 is a perspective view of the fifth embodiment of the sponge cushion of the present application;
[0031] Figure 8 is a perspective view of the sixth embodiment of the sponge cushion of the present application.
[0032] Explanation of Reference Signs:
[0033] 10 - Lower surface; 101 - Central region; 102 - Left side region; 103 - Right side region; 104 - Left edge region; 105 - Right edge region; 106 - Front edge region; 107 - Rear edge region; 108 - Thickened portion;
[0034] 20 - Upper surface;
[0035] 30, 31, 32, 33, 34, 35 - concave structure; 311 - hypotenuse; 312 - straight edge; 301 - bottom surface; 302 - side surface; 303 - rounded chamfer; 331, 341 - straight section; 332 - zigzag shape; 342 - wavy shape. Detailed Implementation
[0036] The technical solutions in the embodiments (or "implementations") of this application will be clearly and completely described herein with reference to the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements.
[0037] If the embodiments of this application contain terms relating to directional indications or positional relationships (such as up, down, left, right, front, back, inside, outside, top, bottom, center, vertical, horizontal, longitudinal, transverse, length, width, counterclockwise, clockwise, axial, radial, circumferential, etc.), such terms are only used to explain the relative positional relationships and movement of the components in a specific posture (as shown in the attached figures); if the specific posture changes, the directional indications or positional relationships will also change accordingly. Furthermore, the terms "first" and "second" used in the embodiments of this application are only for descriptive convenience and should not be construed as indicating or implying relative importance.
[0038] The embodiments described in this specification will now be described in detail.
[0039] Reference Figure 1 , Figure 2 and Figure 3 As shown, this application discloses a sponge seat cushion, which includes a lower surface 10 and an upper surface 20 disposed opposite to each other. The lower surface 10 has a plurality of recessed structures 30. The lower surface 10 includes a central region 101, a left side region 102, and a right side region 103 arranged side-by-side in the front-back direction, as detailed below. Figure 1 The area marked by the middle dashed line.
[0040] The widths of the left region 102 and the right region 103 are greater than the width of the central region 101. The recessed structures 30 are symmetrically arranged in the left region 102 and the right region 103 to form two weight-reduction zones.
[0041] The lower surface 10 further comprises a left edge region 104 and a right edge region 105 located outside the left region 102 and the right region 103 respectively. The lower surface 10 further comprises a front edge region 106 and a back edge region 107. The front edge region 106 is arranged at the front of the left region 102, the right region 103 and the central region 101. The back edge region 107 is arranged at the back of the left region 102, the right region 103 and the central region 101. The back edge region 107 and the front edge region 106 are located at the front and back of the lower surface 10 respectively.
[0042] The width of the front edge region 106 is the same as the width of the sponge seat cushion. The width of the back edge region 107 is the same as the width of the sponge seat cushion. The length of the front edge region 106 is greater than the length of the back edge region 107. The width of the left edge region 104 and the right edge region 105 is close to the width of the central region 101. The left edge region 104, the right edge region 105, the back edge region 107 and the front edge region 106 jointly form a closed annular edge region.
[0043] Figure 1 In the embodiment, the central region 101, the left edge region 104, the right edge region 105, the back edge region 107 and the front edge region 106 are all non-weight-reducing regions. These regions are not provided with recess structures, and the sponge seat cushion has a uniform thickness, which can effectively ensure the structural strength at the edge.
[0044] According to an embodiment of the present application, the width of the central region 101 is not greater than 80 mm, and the length of the front edge region 106 is not greater than 75 mm.
[0045] The recess structure 30 comprises a bottom surface 301 and a side surface 302. The side surface 302 is arranged obliquely relative to the lower surface 10, and the connection between the side surface 302 and the lower surface 10 and the bottom surface 301 is provided with a circular arc chamfer 303. The opening area of the recess structure 30 on the lower surface 10 is greater than the area of the bottom surface 301, that is, the recess structure 30 is a tapered structure. The oblique arrangement of the side surface 302 facilitates injection molding demolding, and the circular arc chamfer 303 can more naturally fit the curves of the human body. The two structures can reduce direct pressure on the human body and provide a smoother and more comfortable contact experience.
[0046] The recess structure 30 has multiple shapes and is arranged at intervals. Each shape of the recess structure 30 has at least one oblique edge 311 arranged obliquely relative to the front-back direction and at least two straight edges 312 arranged along the front-back direction or the left-right direction. In the illustration, the included angle between the oblique edge 311 and the front-back direction is 45 degrees.
[0047] Specifically, the recessed structures 30 include right-angled triangles, parallelograms, and trapezoids, the oblique edges 311 of the right-angled triangles and trapezoids form an angle of 45 degrees with the front-rear direction, and one pair of opposite sides of the parallelogram also form an angle of 45 degrees with the front-rear direction.
[0048] The front part of the lower surface 10 is provided with a thickened part 108, and the width of the thickened part 108 is the same as the width of the sponge cushion. The thickened part 108 has a structure of being high in the middle and low at the front and rear, and the highest point of the thickened part 108 is arranged in the non-weight-reducing area. The thickened part 108 is distributed in the front edge area 106 and a part of the area behind the front edge area 106. When the sponge cushion is placed on the seat, the thickened part 108 makes the sponge cushion have a sitting feeling of being high in the front and low in the rear.
[0049] Figure 4 In the second embodiment shown, the lower surface 10 includes the central area 101, the left side area 102, the right side area 103, the left edge area 104, the right edge area 105, the front edge area 106, and the rear edge area 107 arranged in the same direction as in the above embodiment.
[0050] The recessed structures 31 are circular and arranged in a lattice pattern in the left side area 102 and the right side area 103, that is, a plurality of recessed structures 31 are arranged in rows along the front-rear direction and the left-right direction. The spacing of the recessed structures 31 along the front-rear direction and the left-right direction is the same, the shapes of the recessed structures 31 are the same, and the recessed structures 31 between two adjacent rows form an angle of 45 degrees with the front-rear direction.
[0051] Figure 5 In the third embodiment shown, the recessed structures 32 are square and arranged in a lattice pattern in the left side area 102 and the right side area 103, that is, a plurality of recessed structures 32 are arranged in rows along the front-rear direction and the left-right direction.
[0052] Figure 6 In the fourth embodiment shown, the central area 101 is also provided with recessed structures 33, and the recessed structures 33 are symmetrically distributed with respect to the center line (see the dashed line in FIG. 4) of the sponge cushion. Some of the recessed structures 33 are arranged across the left side area 102, the right side area 103, and the central area 101, and some of the recessed structures 33 are arranged only in the left side area 102 or the right side area 103. The middle part of the recessed structures 33 arranged across the three areas protrudes forward with respect to the two sides. Figure 6
[0053] The recessed structures 33 include a zigzag structure, the middle part of the recessed structures 33 arranged across the three areas is a flat section 331 and arranged along the left-right direction, the two sides are zigzag sections 332 and arranged as a whole to be inclined backward and form an angle of 45 degrees with the front-rear direction, and the width of the flat section 331 is greater than the width of the central area 101.
[0054] Figure 7 In the fifth embodiment shown, the recessed structure 34 is also arranged in the central region 101 and is symmetrically distributed relative to the center line of the sponge cushion. The recessed structure 34 comprises a wave-shaped structure, the middle part of the recessed structure 34 arranged across three regions is a flat section 341 and is arranged along the left-right direction, the two sides are wave-shaped 342 and are arranged as a whole to be inclined backward and form an angle of 45 degrees with the front-back direction, and the width of the flat section 341 is greater than the width of the central region 101.
[0055] Figure 8 In the sixth embodiment shown, the recessed structure 35 is also arranged in the central region 101 and is symmetrically distributed relative to the center line of the sponge cushion. The recessed structure 35 comprises a two-section straight line structure, the recessed structure 35 arranged only in the left region 102 or the right region 103 is a straight line structure, and the straight line structure is inclined relative to the front-back direction and forms an angle of 45 degrees with the front-back direction.
[0056] The sponge cushion is made of molded sponge, which is a soft and porous material, thereby increasing the air permeability of the sponge cushion.
[0057] The groove structure formed by the recessed structure 30, 31, 32, 33, 34, 35 can realize uniform stress and reduce the initial hardness when supporting, further improve the comfort factor, and improve the softness and wrapping feeling of the user after sitting.
[0058] The application also discloses a seat, which comprises a sponge cushion and a seat frame. The seat frame is provided with a plurality of serpentine springs along the front-back direction, one of which abuts below the central region 101, and the others are symmetrically arranged in the left region 102 and the right region 103.
[0059] It should be noted that the technical solutions or technical features described in the above embodiments can be combined or supplemented with each other without conflict. The scope of protection of the application is not limited to the precise structures described in the above embodiments and shown in the drawings; any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the application should be included in the scope of protection of the application.
Claims
1. A sponge seat cushion, characterized in that, It includes a lower surface and an upper surface that are positioned opposite each other; The lower surface has multiple recessed structures, including a central region, a left region, and a right region arranged side by side along the front-to-back direction. The recessed structures are symmetrically arranged in the left and right regions to form at least two weight-reducing zones. The central region also has recessed structures, which are symmetrically distributed with respect to the center line of the sponge cushion. Some of the recessed structures span the left, right, and central regions, while others are only located in the left or right region. The central part of the recessed structure, which spans three regions, protrudes forward relative to the two sides.
2. The sponge cushion according to claim 1, characterized in that, The central area is a non-weight-reduction zone.
3. The sponge cushion according to claim 2, characterized in that, The width of the central area is no more than 80mm, and the material of the sponge cushion is molded sponge.
4. The sponge cushion according to claim 2, characterized in that, The plurality of recessed structures have multiple shapes and are spaced apart from each other. Each recessed structure has at least one inclined side that is inclined relative to the front-back direction and at least two straight sides that are arranged along the front-back direction or the left-right direction. The angle between the inclined side and the front-back direction is 45 degrees.
5. The sponge cushion according to claim 1, characterized in that, The width of the left and right regions is greater than the width of the central region; the lower surface also includes a left edge region and a right edge region located outside the left and right regions respectively; the left edge region and the right edge region are non-weight-reduction areas and their width is close to the width of the central region.
6. The sponge cushion according to claim 1, characterized in that, The lower surface also includes a front edge region; the front edge region is located at the front of the left side region, the right side region and the center region; the front edge region is a non-weight-reducing area; the width of the front edge region is the same as the width of the sponge cushion, and the length of the front edge region is no more than 75mm.
7. The sponge cushion according to claim 6, characterized in that, The lower surface also includes a rear edge region; the rear edge region is located at the rear of the left side region, the right side region and the center region; the width of the rear edge region is the same as the width of the sponge cushion, and the length of the front edge region is less than the length of the rear edge region.
8. The sponge cushion according to claim 2, characterized in that, The plurality of recessed structures are distributed in a dot matrix pattern in the left and right regions; the spacing between the plurality of recessed structures is the same in the front-back and left-right directions; the plurality of recessed structures have the same shape.
9. The sponge cushion according to claim 8, characterized in that, The recessed structure is square, rhomboid, rectangular, or circular.
10. The sponge cushion according to claim 1, characterized in that, The recessed structure includes a bottom surface and a side surface; the connection between the side surface and the lower surface and the bottom surface is provided with a rounded chamfer; the side surface is inclined relative to the lower surface, and the opening area of the recessed structure on the lower surface is larger than the area of the bottom surface.
11. The sponge cushion according to claim 1, characterized in that, The lower surface has a thickened section at the front, and the width of the thickened section is the same as the width of the sponge cushion; the thickened section has a structure that is high in the middle and low at the front and back, and the highest point of the thickened section is located in the non-weight reduction area.
12. The sponge cushion according to claim 1, characterized in that, The plurality of recessed knots each include a zigzag or wavy structure; the middle part of the recessed structure, which spans three regions, is a straight section and is arranged in the left-right direction, while the two sides are zigzag or wavy and are inclined backward as a whole; the width of the straight section is greater than the width of the central region.
13. The sponge cushion according to claim 1, characterized in that, The recessed structure spanning three regions includes a two-segment linear structure. The recessed structure located only in the left or right region is a linear structure, and the linear structures are all inclined relative to the front-back direction.
14. A seating arrangement, characterized in that, The device includes a seat frame and a sponge seat cushion as described in any one of claims 1-13. The seat frame is provided with a plurality of serpentine springs along the front-to-back direction, one of the serpentine springs abutting below the central region, and the other serpentine springs are symmetrically arranged in the left and right regions.