Spring-inners composite pillow

Abstract

The spring-loaded composite pillow comprises a pillow cover and a pillow core arranged in the pillow cover, the pillow core comprises an inner core body, the inner core body comprises an upper foam layer, a lower foam layer and a spring module, the bottom surface of the upper foam layer is concave upward, and the upper spring groove is located in the middle part of the upper foam layer, and a plurality of positioning convex parts are distributed around the upper spring groove; the top surface of the lower foam layer is concave downward, and the lower spring groove is located in the middle part of the lower foam layer, and a plurality of positioning grooves are distributed around the lower spring groove, the upper spring groove and the lower spring groove are combined with each other to form a spring cavity, the spring module is located in the spring cavity, each positioning convex part is adapted to be inserted into a positioning groove, and quick positioning and cooperation between the upper foam layer and the lower foam layer are realized; the top surface of the lower foam layer and the bottom surface of the upper foam layer are bonded and connected by a first water-based glue curing layer, and the surface of the positioning convex part and the groove surface of the positioning groove are bonded and connected by the first water-based glue curing layer, so that the overall structural stability and deformation resistance of the pillow core are improved.

Description

Technical Field

[0001] This utility model relates to the field of pillow technology, specifically to a composite pillow with an internal spring. Background Technology

[0002] A spring pillow is a type of pillow with an internal spring structure, providing unique support and comfort.

[0003] Referring to the pillows provided in patent applications CN201821658926.X and CN202022860695.4, existing spring pillow cores typically include a spring module, an upper cotton layer, and a lower cotton layer. The bottom surface of the upper cotton layer and the top surface of the lower cotton layer are bonded together with an adhesive curing layer, so that the upper spring groove on the bottom surface of the upper cotton layer and the lower spring groove on the top surface of the lower cotton layer combine to form a spring cavity. The spring module is located in the spring cavity, with its two ends abutting against the top surface of the upper spring groove and the bottom surface of the lower spring groove, respectively. This utilizes the elasticity of the spring module to improve the pillow's support performance and comfort. However, the joint surface between the upper and lower cotton layers lacks a positioning structure, making it difficult to achieve rapid alignment during the bonding and assembly process, increasing assembly difficulty, and leading to reduced production efficiency. Utility Model Content

[0004] In order to overcome the shortcomings of the prior art, this utility model provides a composite pillow with an internal spring.

[0005] The technical solution adopted by this utility model to solve its technical problem is:

[0006] A composite pillow with internal springs includes a pillowcase and a pillow core disposed inside the pillowcase. The pillow core includes an inner core body, which includes an upper foam layer, a lower foam layer, and a spring module. The upper foam layer has an upper spring groove located in the middle and a plurality of positioning protrusions distributed around the upper spring groove on its bottom surface facing upward. The upper foam layer has a plurality of ventilation holes communicating with the upper spring groove on its top surface.

[0007] The top surface of the lower foam layer has a downward recessed lower spring groove located in its middle and multiple positioning grooves distributed around the lower spring groove. The upper spring groove and the lower spring groove are combined to form a spring cavity. The spring module is located in the spring cavity and its upper and lower ends abut against the top surface of the upper spring groove and the bottom surface of the lower spring groove, respectively. Each positioning protrusion is adapted to be inserted into a positioning groove. The top surface of the lower foam layer and the bottom surface of the upper foam layer, as well as the groove surface of the positioning groove and the surface of the positioning protrusion, are all bonded together by a first water-based adhesive curing layer.

[0008] In this invention, the pillow further includes an inner core sleeve located between the pillowcase and the pillow core, the inner surface of which is in contact with the surface of the inner core body.

[0009] In this utility model, the inner core sleeve is made of polyester material, and the pillowcase is made of pure cotton material.

[0010] In this utility model, the spring module includes multiple spring modules arranged in an array. Each spring module includes a spring sleeve and an inner core spring disposed within the spring sleeve, with adjacent spring sleeves connected in sequence.

[0011] In this utility model, the spring module further includes an upper fabric piece and a lower fabric piece. The upper and lower ends of the upper fabric piece are bonded to the top surface of the upper spring groove and the top surface of the spring sleeve respectively using a second water-based adhesive curing layer. The upper and lower ends of the lower fabric piece are bonded to the bottom of the spring sleeve and the bottom surface of the lower spring groove respectively using a third water-based adhesive curing layer.

[0012] In this utility model, the upper fabric piece is bent downwards on all four sides to form an upper folded edge, and the lower fabric piece is bent upwards on all four sides to form a lower folded edge. The lower folded edge is sewn onto the upper folded edge with a first stitch and / or bonded and fixed to the upper folded edge with a fourth water-based adhesive curing layer. The upper fabric piece, the lower folded edge, the lower fabric piece, and the upper folded edge together form a surrounding cavity for accommodating the spring module.

[0013] In this invention, both the upper and lower fabric pieces are provided with multiple fabric through holes, which are used to allow air to circulate around the cavity.

[0014] In this invention, the lower folded edge is bonded and fixed to the groove surfaces of the upper and lower spring grooves using a fifth water-based adhesive curing layer.

[0015] In this invention, the spring sleeve is made of non-woven fabric or denim.

[0016] In this invention, both the positioning groove and the positioning protrusion are frustum-shaped, wherein the diameter of the positioning protrusion gradually increases from bottom to top, and the diameter of the positioning groove gradually decreases from top to bottom.

[0017] The beneficial effects of this utility model are as follows: This utility model achieves rapid positioning and engagement between the upper and lower foam layers by inserting the positioning protrusion into the positioning groove. Simultaneously, the top surface of the lower foam layer and the bottom surface of the upper foam layer, as well as the groove surface of the positioning groove and the surface of the positioning protrusion, are bonded together using a first water-based adhesive curing layer. This increases the bonding area between the upper and lower foam layers, thereby improving the overall structural stability and deformation resistance of the pillow core and effectively preventing delamination or detachment during use. Furthermore, the spring module is located within the spring cavity and abuts against the top surface of the upper spring groove and the bottom surface of the lower spring groove, allowing the spring module to evenly transmit pressure when subjected to force, improving the pillow's support performance and comfort. At the same time, the design of the ventilation holes further enhances the pillow's breathability, allowing the user to compress the internal space of the spring cavity when resting their head on the corresponding ventilation hole, expelling air from the spring cavity and improving the user experience. Attached Figure Description

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0019] Figure 1 This is a diagram of the internal structure of a composite pillow;

[0020] Figure 2 An exploded view of the pillow filling;

[0021] Figure 3 This is a 3D view of the upper foam layer. 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.

[0023] It should be noted that if any directional indication (such as up, down, left, right, front, back, top, bottom, inside, outside, vertical, horizontal, longitudinal, counterclockwise, clockwise, circumferential, radial, axial, etc.) is involved in the embodiments of this utility model, the directional indication is only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0024] Furthermore, unless otherwise explicitly specified and limited, the terms "set up," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection using welding, a detachable connection using bolts, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0025] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," such descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, features defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this utility model.

[0026] Reference Figure 1-3 A composite pillow with internal springs includes a pillowcase 1 and a pillow core disposed within the pillowcase 1. The pillow core includes an inner core body, which comprises an upper foam layer 2, a lower foam layer 3, and a spring module. The bottom surface of the upper foam layer 2 is recessed upwards, with an upper spring groove 21 located in its middle and a plurality of positioning protrusions 22 distributed around the upper spring groove 21. The top surface of the upper foam layer 2 is provided with a plurality of ventilation holes 23 communicating with the upper spring groove 21. The top surface of the lower foam layer 3 is recessed downwards, with a lower spring groove 3 located in its middle. 1. A plurality of positioning grooves 32 are distributed around the lower spring groove 31. The upper spring groove 21 and the lower spring groove 31 are combined to form a spring cavity. The spring module is located in the spring cavity and its upper and lower ends abut against the top surface of the upper spring groove 21 and the bottom surface of the lower spring groove 31, respectively. Each positioning protrusion 22 is adapted to be inserted into a positioning groove 32. The top surface of the lower foam layer 3 and the bottom surface of the upper foam layer 2, as well as the groove surface of the positioning groove 32 and the surface of the positioning protrusion 22 are bonded together by a first water-based adhesive curing layer.

[0027] This invention achieves positioning and engagement between the upper foam layer 2 and the lower foam layer 3 by inserting the positioning protrusion 22 into the positioning groove 32. Simultaneously, the top surface of the lower foam layer 3 and the bottom surface of the upper foam layer 2, as well as the groove surface of the positioning groove 32 and the surface of the positioning protrusion 22, are bonded together using a first water-based adhesive curing layer. This increases the bonding area between the upper foam layer 2 and the lower foam layer 3, thereby increasing the overall structural stability and deformation resistance of the pillow core and effectively preventing delamination or detachment during use. Furthermore, the spring module is located within the spring cavity and abuts against the top surface of the upper spring groove 21 and the bottom surface of the lower spring groove 31, allowing the spring module to evenly transmit pressure when subjected to force, improving the pillow's support performance and comfort. At the same time, the design of the ventilation holes 23 further enhances the pillow's breathability, allowing the user to compress the internal space of the spring cavity when resting on the pillow at the position corresponding to the ventilation holes 23, expelling air from the spring cavity and improving the user experience.

[0028] In this embodiment, the pillow further includes an inner core sleeve 4 located between the pillowcase 1 and the pillow core. The inner surface of the inner core sleeve 4 is fitted to the surface of the inner core body. The inner core sleeve 4 is made of polyester material and is used to wrap the inner core body to further improve the overall stability and structural strength of the pillow, while preventing internal components from shifting or loosening, thereby extending the pillow's service life. Furthermore, the inner core sleeve 4 is provided with a zipper to facilitate opening the opening of the inner core sleeve 4 and inserting the inner core body into it. The zipper is a conventional technology and is therefore not shown in the accompanying drawings.

[0029] In this embodiment, the pillowcase 1 is made of pure cotton, which has the advantages of being skin-friendly, breathable, safe, and durable, providing users with a more comfortable sleep experience. Furthermore, the pillowcase 1 is equipped with a head cover zipper to facilitate opening the pillowcase 1 and inserting the pillow core. Since the head cover zipper is a conventional technology, it is not shown in the accompanying drawings.

[0030] In this embodiment, the spring module includes a plurality of spring modules 5 arranged in an array. Each spring module 5 includes a spring sleeve 51 and an inner core spring 52 disposed within the spring sleeve 51. Adjacent spring sleeves 51 are connected in sequence, for example, adjacent spring sleeves 51 are bonded together with water-based adhesive.

[0031] In this embodiment, the spring module further includes an upper fabric piece 6 and a lower fabric piece 7. The upper and lower ends of the upper fabric piece 6 are bonded to the top surface of the upper spring groove 21 and the top surface of the spring sleeve 51 respectively using a second water-based adhesive curing layer. The upper and lower ends of the lower fabric piece 7 are bonded to the bottom of the spring sleeve 51 and the bottom surface of the lower spring groove 31 respectively using a third water-based adhesive curing layer. This allows the spring module to transmit pressure evenly when subjected to force, reducing the probability of the upper foam layer 2 and the lower foam layer 3 being locally pulled and damaged by the spring module 5, thereby improving the quality of use of the pillow.

[0032] In this embodiment, the upper fabric piece 6 has downward folds on all four sides to form an upper folded edge 61, and the lower fabric piece 7 has upward folds on all four sides to form a lower folded edge 71. The lower folded edge 71 is sewn onto the upper folded edge 61 using a first stitch. The upper fabric piece 6, lower folded edge 71, lower fabric piece 7, and upper folded edge 61 together form a surrounding cavity to accommodate the spring module, thereby further enhancing the mutual positioning quality between the various spring modules 5. The first stitch is not shown in the accompanying drawings. Alternatively, in other embodiments, the lower folded edge 71 may be bonded and fixed to the upper folded edge 61 using a fourth water-based adhesive curing layer, or the lower folded edge 71 may be fixed to the upper folded edge 61 using both the first stitch and the fourth water-based adhesive curing layer.

[0033] In this embodiment, after the spring module is placed into the spring cavity, the lower folded edge 71 can be bonded and fixed to the groove surface of the upper spring groove 21 and the lower spring groove 31 using the fifth water-based adhesive curing layer, thereby achieving a stable installation of the spring module inside the pillow, reducing displacement or shaking of the spring module 5 during use, and improving the reliability of the overall structure.

[0034] In this embodiment, both the upper fabric piece 6 and the lower fabric piece 7 are made of polyester material. Both the upper fabric piece 6 and the lower fabric piece 7 are provided with multiple fabric through holes 10, which are used to allow ventilation around the cavity.

[0035] In this embodiment, the spring sleeve 51 is made of non-woven fabric or denim fabric, preferably denim, which has advantages such as tensile strength, wear resistance, aging resistance and environmental friendliness.

[0036] In this embodiment, the first, second, third, fourth, and fifth water-based adhesive cured layers are formed by curing water-based adhesives. The water-based adhesives need to possess excellent bonding properties and environmentally friendly characteristics to ensure that they release virtually no harmful substances during long-term use of the pillow, while also ensuring a strong bond between the various connecting components. The first, second, third, fourth, and fifth water-based adhesive cured layers are not shown in the accompanying drawings.

[0037] In this embodiment, the upper foam layer 2 and the lower foam layer 3 are made of MDI foam, which is durable and environmentally friendly. Furthermore, both the positioning groove 32 and the positioning protrusion 22 are frustum-shaped, with the diameter of the positioning protrusion 22 gradually increasing from bottom to top, and the diameter of the positioning groove 32 gradually decreasing from top to bottom. This design facilitates the insertion of the positioning protrusion 22 into the positioning groove 32, and also facilitates demolding of the upper foam layer 2 and the lower foam layer 3 during the foaming process.

[0038] The above description is only a preferred embodiment of the present utility model. Any technical solution that achieves the purpose of the present utility model by essentially the same means shall fall within the protection scope of the present utility model.

Claims

1. A composite pillow with internal springs, comprising a pillowcase (1) and a pillow core disposed within the pillowcase (1), the pillow core comprising an inner core body, the inner core body comprising an upper foam layer (2), a lower foam layer (3) and a spring module, characterized in that: The bottom surface of the upper foam layer (2) is recessed upwards with an upper spring groove (21) located in the middle and a plurality of positioning protrusions (22) distributed around the upper spring groove (21). The top surface of the upper foam layer (2) is provided with a plurality of vent holes (23) communicating with the upper spring groove (21). The top surface of the lower foam layer (3) is recessed downwards, with a lower spring groove (31) located in the middle and a plurality of positioning grooves (32) distributed around the lower spring groove (31). The upper spring groove (21) and the lower spring groove (31) are combined to form a spring cavity. The spring module is located in the spring cavity and its upper and lower ends abut against the top surface of the upper spring groove (21) and the bottom surface of the lower spring groove (31) respectively. Each positioning protrusion (22) is adapted to be inserted into a positioning groove (32). The top surface of the lower foam layer (3) and the bottom surface of the upper foam layer (2) are bonded together with the groove surface of the positioning groove (32) and the surface of the positioning protrusion (22) by a first water-based adhesive curing layer.

2. The composite pillow with an internal spring according to claim 1, characterized in that: The pillow also includes an inner core sleeve (4) located between the pillowcase (1) and the pillow core, the inner surface of which is in contact with the surface of the inner core body.

3. A composite pillow with an internal spring according to claim 2, characterized in that: The inner core cover (4) is made of polyester, and the pillowcase (1) is made of pure cotton.

4. A composite pillow with an internal spring according to any one of claims 1-3, characterized in that: The spring module includes multiple spring modules (5) arranged in an array. Each spring module (5) includes a spring sleeve (51) and an inner core spring (52) disposed within the spring sleeve (51). Adjacent spring sleeves (51) are connected in sequence.

5. A composite pillow with an internal spring according to claim 4, characterized in that: The spring module also includes an upper fabric piece (6) and a lower fabric piece (7). The upper and lower ends of the upper fabric piece (6) are bonded to the top surface of the upper spring groove (21) and the top of the spring sleeve (51) respectively using a second water-based adhesive curing layer. The upper and lower ends of the lower fabric piece (7) are bonded to the bottom of the spring sleeve (51) and the bottom surface of the lower spring groove (31) respectively using a third water-based adhesive curing layer.

6. A composite pillow with an internal spring according to claim 5, characterized in that: The upper fabric piece (6) is bent downwards on all four sides to form an upper folded edge (61), and the lower fabric piece (7) is bent upwards on all four sides to form a lower folded edge (71). The lower folded edge (71) is sewn onto the upper folded edge (61) with a first stitch and / or the lower folded edge (71) is bonded and fixed onto the upper folded edge (61) with a fourth water-based adhesive curing layer. The upper fabric piece (6), the lower folded edge (71), the lower fabric piece (7), and the upper folded edge (61) together form a surrounding cavity for accommodating the spring module.

7. A composite pillow with an internal spring according to claim 5, characterized in that: Both the upper fabric piece (6) and the lower fabric piece (7) are provided with multiple fabric through holes (10), which are used to allow air to circulate around the cavity.

8. A composite pillow with an internal spring according to claim 5, characterized in that: The lower folded edge (71) is bonded and fixed to the groove surfaces of the upper spring groove (21) and the lower spring groove (31) using the fifth water-based adhesive curing layer.

9. A composite pillow with an internal spring according to claim 5, characterized in that: The spring sleeve (51) is made of non-woven fabric or denim.

10. A composite pillow with an internal spring according to any one of claims 1-3, characterized in that: Both the positioning groove (32) and the positioning protrusion (22) are frustum-shaped. The diameter of the positioning protrusion (22) gradually increases from bottom to top, while the diameter of the positioning groove (32) gradually decreases from top to bottom.

Images