Inflatable cushion with air column structure and manufacturing process thereof

Abstract

The invention belongs to the technical field of inflatable cushions, and particularly relates to an inflatable cushion with an air column structure and a manufacturing process of the inflatable cushion. An inflation cavity is formed in the inflatable cushion body, and an inflation nozzle is arranged on the side wall of the inflation cavity. A tie bar is arranged in the inflation cavity; the upper ends of the tie bars are connected with the inner top wall of the inflation cavity, and the lower ends of the tie bars are connected with the inner bottom wall of the inflation cavity; the air column structure comprises an air column film and a stay wire; the upper edge and the lower edge of the air column film are connected to the inner sides of the peripheral side walls of the inflation cavity, and an air column cavity is formed between the air column film and the inner side wall of the inflation cavity. The air column cavity is separated from the inflation cavity; and the two ends of the stay wire are connected with the two opposite sides of the air column film. According to the scheme, the outward bulging degree of the side edge of the inflatable cushion can be effectively controlled; the volume and the weight of the folded inflatable cushion are reduced, so that the inflatable cushion is convenient to store and carry; and the stability and comfort of the inflatable cushion in use are improved.

Description

Technical Field

[0001] The invention belongs to the technical field of inflatable cushions, and particularly relates to an inflatable cushion with an air column structure and a manufacturing process thereof. Background Art

[0002] Inflatable mattresses are common household products. When the thickness of an inflatable mattress is too high, the sides of the mattress tend to bulge, affecting its aesthetics. Existing household inflatable mattresses on the market generally reduce this bulging by adding side walls or side panels. However, these added side walls or side panels are generally quite rigid, and when the height of the inflatable mattress is too high, bulging is still unavoidable. Furthermore, the mattress is prone to side-to-side swaying during use, resulting in poor stability. Furthermore, the presence of the side walls makes the inflatable mattress heavier, less foldable, and bulky when folded, making it difficult to store.

[0003] For this reason, it is necessary to design an inflatable cushion with an air column structure. Summary of the Invention

[0004] In order to solve the above problems existing in the prior art, the present invention provides an inflatable cushion with an air column structure and a manufacturing process thereof.

[0005] The technical solution adopted in the present invention is:

[0006] An inflatable cushion with an air column structure, comprising an inflatable cushion body and an air column structure;

[0007] The inflatable cushion body is provided with an inflatable cavity, and an inflatable nozzle is provided on the side wall of the inflatable cavity; a tensioning bar is provided in the inflatable cavity; the tensioning bars are independent of each other, the upper end of the tensioning bar is connected to the inner top wall of the inflatable cavity, and the lower end of the tensioning bar is connected to the inner bottom wall of the inflatable cavity;

[0008] The air column structure includes an air column membrane and a pull wire; the upper edge and the lower edge of the air column membrane are connected to the inner side of the four side walls of the inflation cavity, and an air column cavity is formed between the air column membrane and the inner side wall of the inflation cavity; the air column cavity is separated from the inflation cavity, and an air column air nozzle is provided on the side wall of the air column cavity; the pull wire is provided in the inflation cavity, and the two ends of the pull wire are connected to the opposite sides of the air column membrane.

[0009] As an alternative or supplement to the above structure: the inflatable cushion body includes a top cloth, a side wall cloth and a bottom cloth; the top cloth is located above the bottom cloth, the side wall cloth is connected between the edges of the top cloth and the bottom cloth, and the inflation cavity is located between the top cloth, the side wall cloth and the bottom cloth.

[0010] As an alternative or supplement to the above structure: the upper end of the tie bar is welded to the top fabric, and the upper end of the tie bar is welded to the bottom fabric.

[0011] As an alternative or supplement to the above structure: the tie bars are O-shaped or I-shaped, and several tie bars are distributed in a rectangular array.

[0012] As an alternative or supplement to the above structure: the vertical sides of each reinforcement are oriented in the same direction or are perpendicular to each other.

[0013] As an alternative or supplement to the above structure: the air column cavity is C-shaped or square ring-shaped, and the air column cavity goes around the two short sides and two long sides of the inflatable cushion body.

[0014] As an alternative or supplement to the above structure: the pull wire includes a transverse pull wire and a longitudinal pull wire that are staggered and crossed with each other; the two ends of the transverse pull wire are connected to the air column membranes on the two long sides of the inflatable cushion body; the two ends of the longitudinal pull wire are connected to the air column membranes on the two short sides of the inflatable cushion body.

[0015] As an alternative or supplement to the above structure: a connecting buckle is welded on the air column membrane, and the pull line is connected to the connecting buckle.

[0016] As an alternative or supplement to the above structure: a process for manufacturing an inflatable cushion with a ring-shaped air column cavity includes the following steps:

[0017] S1. Cut a long strip of air column membrane, weld several connecting buckles to the air column membrane, and then connect the transverse and longitudinal pull wires to the connecting buckles on the air column membrane so that the transverse and longitudinal pull wires form a cross relationship with each other;

[0018] S2. Connect the air column membrane end to end to form a closed loop, and make the perimeter of the air column membrane the same as the perimeter of the side wall cloth, with the side of the air column membrane connected to the horizontal and vertical tension wires facing inward;

[0019] S3. Place the annular air column membrane inside the annular side wall fabric, with the outward side of the air column membrane in contact with the inner side of the side wall fabric. Weld the upper and lower sides of the air column membrane to the side wall fabric, respectively, to form a closed air column cavity between the air column membrane and the middle portion of the side wall fabric. Air flows into and out of the air column cavity only through the air column nozzle.

[0020] S4. Use a single-layer fabric structure or a ring-shaped structure with the ends connected. Weld the lower ends of several tie bars to the base fabric. Place the side wall fabric with the air column membrane welded on the base fabric. Inflate the air column cavity to shape it. Then, weld the upper ends of each tie bar over the transverse and longitudinal tie wires to the top fabric.

[0021] S5. Weld the lower edge of the side wall cloth to the four edges of the bottom cloth; and weld the upper edge of the side wall cloth to the four edges of the top cloth, thereby forming a closed air-filled cavity between the top cloth, the side wall cloth, and the bottom cloth. Air flows in and out of the cavity only through the air nozzle.

[0022] The beneficial effects of the present invention are:

[0023] 1. In this solution, by installing air columns on the inner side of the side wall fabric surrounding the inflatable cavity and pulling them through a pull cord, the outward bulge of the side edges of the inflatable cushion can be effectively controlled without increasing the thickness of the side wall fabric or adding additional structure, thereby improving the aesthetics of the inflatable cushion.

[0024] 2. The side wall fabric of this solution can be made of thin film, without the need to thicken or replace thick materials. This reduces the volume and weight of the inflatable cushion after folding, making it convenient to store and carry;

[0025] 3. The air column structure can effectively reduce the shaking of the inflatable cushion. When the height of the inflatable cushion is large, it can also effectively stabilize the inflatable cushion and improve the comfort of using the inflatable cushion. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the embodiments of this solution or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art.

[0027] Figure 1 This is the exploded structure diagram of the inflatable cushion in this scheme;

[0028] Figure 2 It is a structural diagram of the inflatable cushion in this scheme;

[0029] Figure 3 It is a cross-sectional structural diagram of the inflatable cushion in this scheme.

[0030] In the figure: 1-top cloth; 2-side wall cloth; 3-tension rod; 4-bottom cloth; 5-air column nozzle; 6-inflating nozzle; 7-air column membrane; 8-horizontal tension wire; 9-vertical tension wire. DETAILED DESCRIPTION

[0031] The technical solution in this embodiment will be clearly and completely described below in conjunction with the accompanying drawings. The described embodiments are only a part of the embodiments, not all of them. Based on the embodiments in this solution, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this solution.

[0032] like Figures 1 to 3 As shown, this embodiment designs an inflatable cushion with an air column structure, including an inflatable cushion body and an air column structure.

[0033] The inflatable cushion body includes a top cloth 1, a side wall cloth 2 and a bottom cloth 4; the top cloth 1 is located above the bottom cloth 4, the side wall cloth 2 is connected between the edges around the top cloth 1 and the bottom cloth 4, and an inflation cavity is formed between the top cloth 1, the side wall cloth 2 and the bottom cloth 4, and the inflation cavity is located inside the inflatable cushion body. An inflation nozzle 6 with a one-way valve is installed on the side wall cloth 2, and the inflation cavity can be inflated or the air in the inflation cavity can be discharged through the inflation nozzle 6. The top cloth 1, the side wall cloth 2 and the bottom cloth 4 can be made of fabric with a coating (TPU coating or PVC coating) on one side. The coating is located on the inner side of the fabric, so that after the inflatable cushion body is completed, the coating can be located on the inner wall of the inflation cavity.

[0034] Tie bars 3 are also provided in the air-filled cavity. Several tie bars 3 are independent of each other and are distributed in a rectangular array. The upper ends of the tie bars 3 are connected to the inner top wall of the air-filled cavity, and the lower ends of the tie bars 3 are connected to the inner bottom wall of the air-filled cavity. The upper ends of the tie bars 3 are welded to the top cloth 1, and the upper ends of the tie bars 3 are welded to the bottom cloth 4. The tie bars 3 can be made of a film (TPU film or PVC film), or they can be made of a fabric or non-woven fabric with a coating (TPU coating or PVC coating) on one side. The coating on the tie bars 3 faces the coating on the top cloth 1, the side wall cloth 2, and the bottom cloth 4, thereby facilitating hot-melt welding.

[0035] The reinforcement 3 may be in an O-shape, such as Figure 2 As shown, the tie rod 3 can also be in an I-shape (not shown in the figure). When the tie rod 3 is in an O-shape, the pull marks on the top cloth 1 and the bottom cloth 4 are rectangular; and when the tie rod 3 is in an I-shape, the pull marks on the top cloth 1 and the bottom cloth 4 are long strips.

[0036] The vertical sides of each reinforcement 3 are oriented in the same direction (e.g. Figure 3 As shown in the figure), the vertical sides of each reinforcement 3 may also be oriented perpendicular to each other (not shown in the figure).

[0037] The air column structure includes an air column membrane 7 and a pull wire; the upper edge and the lower edge of the air column membrane 7 are connected to the inner side of the four side walls of the inflation cavity, and an air column cavity is formed between the air column membrane 7 and the inner side wall of the inflation cavity; the air column cavity is separated from the inflation cavity, and an air column air nozzle 5 is provided on the side wall of the air column cavity; the pull wire is provided in the inflation cavity, and the two ends of the pull wire are connected to the opposite sides of the air column membrane 7.

[0038] The air column cavity is square ring (such as Figure 2 As shown) or C-shaped, the air column cavity passes through the two short sides and two long sides of the inflatable cushion body.

[0039] The pull cord includes a transverse pull cord 8 and a longitudinal pull cord 9. The transverse pull cord 8 and the longitudinal pull cord 9 are staggered and cross each other. Multiple transverse pull cords 8 can be provided and connected to different positions of the air column membrane 7. Multiple longitudinal pull cords 9 can also be provided and connected to different positions of the air column membrane 7. The two ends of the transverse pull cord 8 are connected to the air column membrane 7 on the two long sides of the inflatable cushion body; the two ends of the longitudinal pull cord 9 are connected to the air column membrane 7 on the two short sides of the inflatable cushion body. The air column membrane 7 is welded with a connecting buckle, and the pull cord is connected to the connecting buckle, thereby realizing the connection between the pull cord and the air column membrane 7.

[0040] Example 2

[0041] Based on the structure of Example 1, when the shape of the air column cavity is annular, the manufacturing process of the inflatable cushion includes the following steps:

[0042] S1. Cut a long strip of air column membrane 7 of appropriate length, weld several connecting buckles to the air column membrane 7, and then connect the transverse pull wire 8 and the longitudinal pull wire 9 to the connecting buckles on the air column membrane 7, so that the transverse pull wire 8 and the longitudinal pull wire 9 form a mutually intersecting relationship; this step and step S2 can be prepared or prefabricated in advance because the materials involved are small in volume and occupy a small area, thereby improving production efficiency.

[0043] S2. Connect the end to end of the air column membrane 7 to form a closed loop, and make the circumference of the air column membrane 7 the same as the circumference of the side wall cloth 2, and make the side of the air column membrane 7 connected to the horizontal tension line 8 and the longitudinal tension line 9 face inward; the head and tail ends of the air column membrane 7 can be cut obliquely so that the head and tail ends are inclined to the length direction of the air column membrane 7, or the head and tail ends of the air column membrane 7 can be cut into a zigzag shape; so that after the air column membrane 7 is inflated, it is not easy to cause tearing at the connection between the head and tail of the air column membrane 7.

[0044] S3. Place the annular air column membrane 7 on the inner side of the annular side wall cloth 2, with the outward side of the air column membrane 7 in contact with the inner side of the side wall cloth 2, and weld the upper and lower sides of the air column membrane 7 to the side wall cloth 2 respectively, so that a closed air column cavity is formed between the air column membrane 7 and the middle part of the side wall cloth 2, and the air flow enters and exits the air column cavity only through the air column nozzle 5; in this step, since the materials of the side wall cloth 2 and the air column membrane 7 involved are relatively small in volume and occupy a small area, they can also be prepared or prefabricated in advance to improve production efficiency.

[0045] S4 and the reinforcement 3 are made of a single-layer fabric structure, and the upper and lower ends of the reinforcement 3 are bent to form a C-shaped structure; the reinforcement 3 is connected end to end to form a ring structure, that is, an O-shaped structure; the lower ends of several reinforcements 3 are welded to the base fabric 4, and the side wall fabric 2 after welding the air column membrane 7 is placed on the base fabric 4, and the air column cavity is inflated and shaped, and the upper end of each reinforcement 3 is passed over the horizontal tension wire 8 and the longitudinal tension wire 9 and welded to the top fabric 1. Since the fabric area of the top fabric 1 and the base fabric 4 is large and occupies a large area, the pre-inflation and shaping of the air column cavity can speed up production efficiency, reduce the probability of spatial interference between the reinforcement 3 and the horizontal tension wire 8 and the longitudinal tension wire 9, reduce the rework rate and the occupation of the work station, and help improve production efficiency.

[0046] S5. Weld the lower edge of the side wall cloth 2 to the four edges of the bottom cloth 4; weld the upper edge of the side wall cloth 2 to the four edges of the top cloth 1, thereby forming a closed inflation cavity between the top cloth 1, the side wall cloth 2 and the bottom cloth 4, and the air flow enters and exits the inflation cavity only through the inflation nozzle 6.

[0047] The above embodiments are merely examples for the purpose of illustrating the present invention clearly and are not intended to limit the embodiments. It is not necessary and impossible to enumerate all embodiments here. Obvious changes or modifications derived therefrom are still within the scope of protection of this technology.

Claims

1. An inflatable cushion with an air column structure, characterized in that: It includes an inflatable cushion body and an air column structure; An inflatable cavity is provided in the main body of the inflatable cushion, and an inflatable air nozzle (6) is provided on the side wall of the inflatable cavity; a tensioning bar (3) is provided in the inflatable cavity; the tensioning bars (3) are independent of each other, the upper end of the tensioning bar (3) is connected to the inner top wall of the inflatable cavity, and the lower end of the tensioning bar (3) is connected to the inner bottom wall of the inflatable cavity; The air column structure comprises an air column membrane (7) and a pull wire; the upper edge and the lower edge of the air column membrane (7) are connected to the inner sides of the surrounding side walls of the inflation cavity, and an air column cavity is formed between the air column membrane (7) and the inner side wall of the inflation cavity; the air column cavity is separated from the inflation cavity, and an air column air nozzle (5) is provided on the side wall of the air column cavity; the pull wire is provided in the inflation cavity, and the two ends of the pull wire are connected to the opposite sides of the air column membrane (7).

2. The inflatable cushion with an air column structure according to claim 1, characterized in that: The inflatable cushion body comprises a top cloth (1), a side wall cloth (2) and a bottom cloth (4); the top cloth (1) is located above the bottom cloth (4), the side wall cloth (2) is connected between the edges of the top cloth (1) and the bottom cloth (4), and the inflation cavity is located between the top cloth (1), the side wall cloth (2) and the bottom cloth (4).

3. The inflatable cushion with an air column structure according to claim 2, characterized in that: The upper end of the tie bar (3) is welded to the top cloth (1), and the upper end of the tie bar (3) is welded to the bottom cloth (4).

4. The inflatable cushion with an air column structure according to claim 3, characterized in that: The tie bars (3) are in an O-shape or an I-shape, and a plurality of tie bars (3) are distributed in a rectangular array.

5. The inflatable cushion with an air column structure according to claim 4, characterized in that: The vertical sides of each tie bar (3) are oriented in the same direction or are perpendicular to each other.

6. The inflatable cushion with an air column structure according to any one of claims 2 to 5, characterized in that: The air column cavity is C-shaped or square ring-shaped, and the air column cavity winds around two short sides and two long sides of the inflatable cushion body.

7. The inflatable cushion with an air column structure according to claim 6, characterized in that: The pull wires include transverse pull wires (8) and longitudinal pull wires (9) that are staggered and crossed with each other; the two ends of the transverse pull wires (8) are connected to the air column membranes (7) on the two long sides of the inflatable cushion body; and the two ends of the longitudinal pull wires (9) are connected to the air column membranes (7) on the two short sides of the inflatable cushion body.

8. The inflatable cushion with an air column structure according to claim 7, characterized in that: A connecting buckle is welded on the air column membrane (7), and the pull line is connected to the connecting buckle.

9. The inflatable cushion with an air column structure according to claim 8, characterized in that: The manufacturing process of an inflatable cushion with a ring-shaped air column cavity includes the following steps: S1, cutting a long strip of air column membrane (7), welding a number of connecting buckles to the air column membrane (7), and then connecting the transverse pull line (8) and the longitudinal pull line (9) to the connecting buckles on the air column membrane (7), so that the transverse pull line (8) and the longitudinal pull line (9) form a mutually intersecting relationship; S2, connecting the air column membrane (7) end to end to form a closed loop, and making the perimeter of the air column membrane (7) the same as the perimeter of the side wall cloth (2), and facing inwards the side of the air column membrane (7) connected to the transverse tension wire (8) and the longitudinal tension wire (9); S3, placing the annular air column membrane (7) on the inner side of the annular side wall cloth (2), with the outward side of the air column membrane (7) in contact with the inner side of the side wall cloth (2), and respectively welding and fixing the upper side and the lower side of the air column membrane (7) to the side wall cloth (2), so that a closed air column cavity is formed between the air column membrane (7) and the middle part of the side wall cloth (2), and air flows in and out of the air column cavity only through the air column nozzle (5); S4, the lacing bars (3) are selected to be a single-layer fabric structure or a ring structure connected end to end, the lower ends of several lacing bars (3) are welded to the base fabric (4), the side wall fabric (2) after the air column membrane (7) is welded is placed on the base fabric (4), the air column cavity is inflated and shaped, and the upper ends of each lacing bar (3) are passed over the transverse tension line (8) and the longitudinal tension line (9) and welded to the top fabric (1); S5. The lower edge of the side wall cloth (2) is welded to the four edges of the bottom cloth (4); the upper edge of the side wall cloth (2) is welded to the four edges of the top cloth (1), thereby forming a closed air-filled cavity between the top cloth (1), the side wall cloth (2) and the bottom cloth (4), and air flows in and out of the air-filled cavity only through the air nozzle (6).

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