Plastic net cushion

Abstract

The invention relates to the technical field of seat cushions, in particular to a plastic net seat cushion which comprises a seat cushion and a back cushion and further comprises a connecting structure used for connecting the seat cushion and the back cushion, the connecting structure comprises a sleeve strip, an inserting strip and a first locking bolt, the inserting strip is inserted into the sleeve strip in a sliding mode, and the first locking bolt is used for locking the inserting strip and the sleeve strip. One end, far away from the insertion strip, of the sleeve strip is connected with the cushion, and one end, far away from the sleeve strip, of the insertion strip is connected with the back cushion; an extension part is arranged on the side, away from the back cushion, of the seat cushion, the width of the extension part is smaller than that of the seat cushion, and arc-shaped notches are formed in the two sides of the extension part; as the seat cushion and the back cushion are mainly made of two layers of plastic nets, compared with a cloth seat cushion, the plastic nets have better air permeability, are not easy to absorb sweat and breed bacteria, and are convenient to clean; in addition, through the design of a connecting structure, the seat cushion and the back cushion can be conveniently and independently detached and taken down, and the back cushion or the seat cushion can be conveniently and independently cleaned and maintained.

Description

Technical Field

[0001] The invention relates to the technical field of seat cushions, in particular to a plastic net seat cushion. Background Art

[0002] Car seat cushions are the main consumer goods for car owners. It is particularly important to choose a set of comfortable and practical car seat cushions according to the season. Nowadays, cushions made of cloth and leather are more common on the market. For example, the patent with publication number CN 105966287 A discloses a car seat cushion, including a head cushion, a backrest and a cushion body, the head cushion is connected to the backrest, the backrest is connected to the cushion body, the head cushion, the backrest and the cushion body are all made of linen. The cloth material used in the disclosed patent is easy to absorb sweat, and the cloth cushion is inconvenient to clean. In addition, the backrest and the seat cushion are fixedly connected together and cannot be disassembled. When the backrest or the seat cushion needs to be cleaned separately, the backrest or the seat cushion needs to be removed as a whole, which is inconvenient, so it needs to be improved. Summary of the invention

[0003] The object of the present invention is to provide a plastic mesh cushion to solve the problems raised in the above background technology.

[0004] To achieve the above object, the present invention provides the following technical solutions: A plastic net cushion comprises a seat cushion and a back cushion, wherein the seat cushion and the back cushion are connected in one piece, or the seat cushion and the back cushion are detachably connected, an extension portion is provided on a side of the seat cushion away from the back cushion, the width of the extension portion is smaller than the width of the seat cushion, and arc-shaped notches are provided on both sides of the extension portion; when the seat cushion and the back cushion are detachably connected, it also comprises a connecting structure for connecting the seat cushion and the back cushion, the connecting structure comprises a sleeve strip, an insertion strip, and a first locking bolt, the insertion strip is slidably inserted in the sleeve strip, the first locking bolt is used to lock the insertion strip with the sleeve strip, the end of the sleeve strip away from the insertion strip is connected to the seat cushion, and the end of the insertion strip away from the sleeve strip is connected to the back cushion.

[0005] Preparation of plastic net in the present invention: First, take 32% of soft low-density LLDPE polyethylene particles, 32% of hard high-density HDPE polyethylene particles, and 32% of high-density PERT polyethylene particles, and then add them into the mixer in turn and mix them evenly; in this way, the three main raw materials reach 96%. The prepared raw materials have the softness and crack resistance of soft LLDPE, the wear resistance and smoothness of hard high-density HDPE, and the high and low temperature resistance, acid and alkali resistance, impact resistance, etc. of high-density PERT. A new material is formed by combining the advantages of Among them, the soft low-density polyethylene model is 7042; the high-density polyethylene model is 5502; the toughened polyethylene model is @PERT; Then, according to the required color, add 2% of masterbatch particles to the mixed solution, then add 0.5% of antioxidant, 0.1% of anti-ultraviolet absorber, and 0.5% of light stabilizer, and stir at a speed of 700 r / min to obtain a mixed material; Next, turn on the screw feeder to transport the mixed material to the hopper of the thermoplastic extruder for plasticization; Among them, the screw extruder is divided into five stages; the first stage is conveying and compression, the temperature is controlled at 150 degrees, then enters the second stage of melting, the temperature is controlled at 200 degrees to fully melt the particles, then enters the third stage of complete melting of the particles and the temperature is controlled at 210 degrees, then enters the fourth stage of mixing, the melted material is fully stirred to rearrange the internal molecular structure to form new properties, the temperature is controlled at 220 degrees, and then enters the fifth stage. The fifth stage is connected to the die to push the hot melt plastic into the die, The temperature of the die head is kept at 220 degrees. The hot melted plastic enters the annular channel in the die head to form an annular structure. The end of the annular channel is connected to the annular mold. The mold is two annular toothed rings inserted together. As the inner and outer rings of the die head rotate in opposite directions, the toothed openings on the mold overlap and separate, so that the plastic strips form a network structure. The plasticized plastic is formed into a mesh through a mold, and then the stretching system pulls the mesh into 50°C water. There is a barrel-shaped structure device in the water that supports the shape. The circumference of the barrel is the width of the mesh. The width of the mesh is maintained at 1.5 meters, and the diameter of the barrel is 49.5 centimeters. After the net is shaped and comes out of the water, it is in the shape of a net sleeve. Then the knife on the stretching system cuts the net sleeve to get a flat net. Then the net is rolled into a specified length by the net collecting machine, cut and removed, and sent to the next inspection and cutting link. It is worth mentioning that the tooth-shaped opening of the mold can be square. In order to make the surface of the plastic mesh bright and comfortable to sit on, the width of the tooth-shaped opening is set to 1.3:1.7. In this way, the mesh size is reduced, the mesh stem is widened, and the smoothness of the mesh surface is increased. The concave of the tooth-shaped opening is deepened to 1.5 mm, and the bottom is changed to an arc shape, which can increase the thickness of the mesh. The arc-shaped design of the bottom changes the surface of the mesh stem into an arc shape, which increases the ventilation effect when multiple layers of mesh overlap.

[0006] Preferably, the seat cushion or back cushion comprises two layers of plastic nets and edging cloth bonded to the edges of the two layers of plastic nets.

[0007] Preferably, it further comprises a first connecting belt, a second connecting belt, and a connecting assembly for connecting the first connecting belt and the second connecting belt, and one end of the first connecting belt is connected to the extension portion.

[0008] Preferably, the connecting assembly includes a fixed seat, an insert block, and a second locking bolt. A slot is provided at one end of the fixed seat, and the insert block is slidably inserted in the slot. A through hole connected to the slot is provided on the top of the fixed seat, and a plurality of threaded grooves are provided on the insert block along its length. The second locking bolt passes through the through hole and is threadedly connected to one of the threaded grooves. The other end of the first connecting band is connected to the insert block, and one end of the second connecting band is connected to the fixed seat.

[0009] Preferably, first straps are provided on both sides of the back cushion.

[0010] Preferably, two second straps are provided on a side of the back cushion away from the seat cushion.

[0011] Preferably, the first binding strap and the second binding strap are both elastic straps.

[0012] Compared with the prior art, the present invention has the following beneficial effects: The plastic net seat cushion, because the seat cushion and the back cushion are mainly made of two layers of plastic nets, the plastic net has better air permeability than a cloth seat cushion, is not easy to absorb sweat and breed bacteria, and is easy to clean; in addition, the design of the connection structure makes it easy to disassemble and remove the seat cushion and the back cushion separately, so that the back cushion or the seat cushion can be cleaned and maintained separately. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0014] Figure 2 It is a structural schematic diagram of the connection structure in the present invention.

[0015] Figure 3 It is a schematic structural diagram of the first connecting belt in the present invention.

[0016] Figure 4 It is a schematic structural diagram of the second connecting belt in the present invention.

[0017] Figure 5 It is a schematic diagram of the structure of the connection component in the present invention.

[0018] The meanings of the numbers in the figure are as follows: 10, cushion; 11, extension portion; 12, arc-shaped notch; 13, first fabric edging; 14, first connecting belt; 140, first circular hole; 141, first cylinder; 142, first nut; 15, second connecting belt; 150, second circular hole; 151, second cylinder; 152, second nut; 20, cushion; 21, second fabric edging; 22, first binding belt; 23, second binding belt; 3, connecting structure; 30, sleeve strip; 300, threaded hole; 31, insert strip; 32, first locking bolt; 4, connecting assembly; 40, fixing seat; 400, through hole; 41, first U-shaped frame; 42, insert block; 420, threaded groove; 43, second U-shaped frame; 44, second locking bolt. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] The present invention provides a technical solution: A plastic mesh cushion, mainly suitable for car seat cushions, see Figure 1-Figure 5 , including a seat cushion 10 and a back cushion 20, and also including a connecting structure 3 for connecting the seat cushion 10 and the back cushion 20; when in use, the seat cushion 10 is placed on the car seat, and the back cushion 20 is placed on the car backrest, and the connecting structure can connect the seat cushion 10 and the back cushion 20 together, so that the entire seat cushion is more stable; after the connecting structure is disassembled, the seat cushion 10 and the back cushion 20 can be separated, so that the seat cushion 10 or the back cushion 20 can be removed separately for cleaning and maintenance.

[0021] The seat cushion 10 or the back cushion 20 in this embodiment includes two layers of plastic nets and edging cloths bonded to the edges of the two layers of plastic nets.

[0022] Specifically, the edging cloth bonded to the edges of the two layers of plastic nets on the seat cushion 10 is the first fabric edging 13 ; the edging cloth bonded to the edges of the two layers of plastic nets on the back cushion 20 is the second fabric edging 21 .

[0023] Specifically, the connection structure 3 includes a sleeve strip 30, an insertion strip 31, and a first locking bolt 32. The insertion strip 31 is slidably inserted in the sleeve strip 30. The first locking bolt 32 is used to lock the insertion strip 31 with the sleeve strip 30. Specifically, a plug hole is provided on one side of the sleeve strip 30 close to the insertion strip 31. The insertion strip 31 is slidably inserted in the plug hole of the sleeve strip 30. A threaded hole 300 communicating with the plug hole is provided on the top of the sleeve strip 30. The first locking bolt 32 is threadedly connected to the threaded hole 300. One end of the sleeve strip 30 away from the insert strip 31 is connected to the seat cushion 10, and one end of the insert strip 31 away from the sleeve strip 30 is connected to the back cushion 20; both the sleeve strip 30 and the insert strip 31 are made of plastic, and one end of the sleeve strip 30 away from the insert strip 31 passes through the edging cloth on the seat cushion 10 and is integrally connected to one layer of the plastic net on the seat cushion 10; one end of the insert strip 31 away from the sleeve strip 30 passes through the edging cloth on the back cushion 20 and is integrally connected to one layer of the plastic net on the back cushion 20.

[0024] First straps 22 are provided on both sides of the back cushion 20 . The first straps 22 are sewn to the edge cloth of the back cushion 20 by needle and thread. The back cushion 20 can be easily tied to the backrest of the car through the two first straps 22 .

[0025] Two second straps 23 are provided on one side of the back cushion 20 away from the seat cushion 10. The second straps 23 are sewn to the edging cloth of the back cushion 20 by needle and thread. The two second straps 23 can be tied to the headrest of the car to keep the upper part of the entire back cushion 20 in close contact with the car backrest as much as possible.

[0026] Furthermore, in this embodiment, the first binding strap 22 and the second binding strap 23 are both elastic bands.

[0027] In actual production, the surface of the cushion body can be made smooth to prevent the cushion from causing greater wear and tear on the car seat.

[0028] Since the seat cushion 10 and the back cushion 20 are mainly made of two layers of plastic mesh, the plastic mesh is less likely to block the heating effect of the car seat than a cloth seat cushion, has better air permeability, and is easier to clean than a cloth seat cushion.

[0029] An elongated portion 11 is provided on one side of the seat cushion 10 away from the back cushion 20 . The width of the elongated portion 11 is smaller than the width of the seat cushion 10 . Arc-shaped notches 12 are provided on both sides of the elongated portion 11 .

[0030] When the seat cushion 10 is placed on the car seat, the extension portion 11 can be bent to the front side of the car seat, so that the front side of the seat cushion 10 will not contact the calf of the person and make the calf feel uncomfortable when driving.

[0031] The design of the arc-shaped notch 12; when the extension portion 11 is bent, the edge of the connection between the seat cushion 10 and the extension portion 11 will not be tilted, and people are not likely to get their legs caught when getting on and off the vehicle, which greatly improves the practicality of the device.

[0032] Traditionally, in order to make the extension portion 11 better fit the front side of the car seat, a strip is directly provided on the extension portion 11, and then the strip is tied to the crossbeam under the car seat cushion. When the seat cushion needs to be removed, a person needs to squat on the ground, then lower his head to look at the bottom of the car seat to find the position where the strip is tied, and then loosen the strip. Since the bottom of the car seat is not easy to see clearly, every time the seat cushion is removed, a person needs to squat on the ground, then lower his head to look at the bottom of the car seat to find the position where the strip is tied, and then loosen the strip, which is very inconvenient.

[0033] In order to solve this technical problem, the following technical solution is designed: It also includes a first connecting belt 14, a second connecting belt 15, and a connecting assembly 4 for connecting the first connecting belt 14 and the second connecting belt 15. One end of the first connecting belt 14 is connected to the extension part 11. Specifically, one end of the first connecting belt 14 is sewn to the edging cloth at the extension part 11 by needle and thread.

[0034] The connecting assembly 4 includes a fixed seat 40, an insert block 42, and a second locking bolt 44. A slot is provided at one end of the fixed seat 40, and the insert block 42 is slidably inserted in the slot. A through hole 400 connected to the slot is provided on the top of the fixed seat 40. A plurality of thread grooves 420 are provided on the insert block 42 along its length direction. The second locking bolt 44 passes through the through hole 400 and is threadedly connected to one of the thread grooves 420. The other end of the first connecting belt 14 is connected to the insert block 42, and one end of the second connecting belt 15 is connected to the fixed seat 40.

[0035] Specifically, the plug block 42 is fixedly connected to a second U-shaped frame 43 at one side away from the fixing seat 40, and a first round hole 140 and a first round column 141 are provided on the first connecting belt 14 away from the seat cushion 10. The first round column 141 is bonded to the first connecting belt 14, and also includes a first nut 142 threadably adapted to the first round column 141. The first connecting belt 14 is located on one side of the first cylinder 141 and passes through the second U-shaped frame 43, then goes back to allow the first cylinder 141 to pass through the first circular hole 140 on the first connecting belt 14, and then the first nut 142 is threadedly connected to the first cylinder 141, so that the first connecting belt 14 and the second U-shaped frame 43 can be connected.

[0036] The first U-shaped frame 41 is fixedly connected to the side of the fixing seat 40 away from the plug block 42. The second connecting belt 15 is provided with a second circular hole 150 and a second cylindrical column 151. The second cylindrical column 151 is bonded to the second connecting belt 15 and also includes a second nut 152 threadably adapted to the second cylindrical column 151. The second connecting belt 15 is located on one side of the second cylinder 151 and passes through the first U-shaped frame 41, then goes back to allow the second cylinder 151 to pass through the second round hole 150 on the second connecting belt 15, and then the second nut 152 is threadedly connected to the second cylinder 151, so that the second connecting belt 15 can be connected to the first U-shaped frame 41.

[0037] When in use, the end of the second connecting belt 15 away from the first U-shaped frame 41 is tied to the crossbeam at the bottom of the car seat. After the seat cushion is placed on the car seat, the extension portion 11 is bent to fit the front side of the car seat, and then the plug block 42 is inserted into the fixing seat 40. Then, the second locking bolt 44 is tightened to fix the plug block 42 and the fixing seat 40, and the seat cushion can be fixed. When the seat cushion needs to be removed, squat down and reach your hand to the bottom of the car seat, then loosen the second locking bolt 44, pull the plug block 42 out of the fixing seat 40, and then loosen the first locking bolt 32, pull the insert strip 31 out of the sleeve strip 30, and the seat cushion can be removed from the car seat. This solves the technical problem that in the prior art, since the bottom of the car seat is not easy to see clearly, every time the seat cushion is removed, a person needs to squat on the ground, then lower his head to look at the bottom of the car seat to find the position where the strip is tied, and then the strip can be loosened.

[0038] It is worth noting that the mesh holes of the plastic net in the present invention can be circular, or rectangular, square, diamond, hexagonal, cross, triangular or other polygonal holes; of course, the seat cushion in the present invention is designed separately from the back cushion and can also be used on seats and benches.

[0039] Preparation of plastic net in the present invention: First, take 32% of soft low-density LLDPE polyethylene particles, 32% of hard high-density HDPE polyethylene particles, and 32% of high-density PERT polyethylene particles, and then add them into the mixer in turn and mix them evenly; in this way, the three main raw materials reach 96%. The prepared raw materials have the softness and crack resistance of soft LLDPE, the wear resistance and smoothness of hard high-density HDPE, and the high and low temperature resistance, acid and alkali resistance, impact resistance, etc. of high-density PERT. A new material is formed by combining the advantages of Among them, the soft low-density polyethylene model is 7042; the high-density polyethylene model is 5502; the toughened polyethylene model is @PERT; Then, according to the required color, add 2% of masterbatch particles to the mixed solution, then add 0.5% of antioxidant, 0.1% of anti-ultraviolet absorber, and 0.5% of light stabilizer, and stir at a speed of 700 r / min to obtain a mixed material; Next, turn on the screw feeder to transport the mixed material to the hopper of the thermoplastic extruder for plasticization; Among them, the screw extruder is divided into five stages; the first stage is conveying and compression, the temperature is controlled at 150 degrees, then enters the second stage of melting, the temperature is controlled at 200 degrees to fully melt the particles, then enters the third stage of complete melting of the particles and the temperature is controlled at 210 degrees, then enters the fourth stage of mixing, the melted material is fully stirred to rearrange the internal molecular structure to form new properties, the temperature is controlled at 220 degrees, and then enters the fifth stage. The fifth stage is connected to the die to push the hot melt plastic into the die, The temperature of the die head is kept at 220 degrees. The hot melted plastic enters the annular channel in the die head to form an annular structure. The end of the annular channel is connected to the annular mold. The mold is two annular toothed rings inserted together. As the inner and outer rings of the die head rotate in opposite directions, the toothed openings on the mold overlap and separate, so that the plastic strips form a network structure. The plasticized plastic is formed into a mesh through a mold, and then the stretching system pulls the mesh into 50°C water. There is a barrel-shaped structure device in the water that supports the shape. The circumference of the barrel is the width of the mesh. The width of the mesh is maintained at 1.5 meters, and the diameter of the barrel is 49.5 centimeters. After the net is shaped and comes out of the water, it is in the shape of a net sleeve. Then the knife on the stretching system cuts the net sleeve to get a flat net. Then the net is rolled into a specified length by the net collecting machine, cut and removed, and sent to the next inspection and cutting link. It is worth mentioning that the tooth-shaped opening of the mold can be square. In order to make the surface of the plastic mesh bright and comfortable to sit on, the width of the tooth-shaped opening is set to 1.3:1.7. In this way, the mesh size is reduced, the mesh stem is widened, and the smoothness of the mesh surface is increased. The concave of the tooth-shaped opening is deepened to 1.5 mm, and the bottom is changed to an arc shape, which can increase the thickness of the mesh. The arc-shaped design of the bottom changes the surface of the mesh stem into an arc shape, which increases the ventilation effect when multiple layers of mesh overlap.

Claims

1. A plastic mesh cushion, comprising a seat cushion (10) and a back cushion (20), characterized in that: The seat cushion (10) and the back cushion (20) are connected in an integral manner, or the seat cushion (10) and the back cushion (20) are detachably connected, an extension portion (11) is provided on a side of the seat cushion (10) away from the back cushion (20), the width of the extension portion (11) is smaller than the width of the seat cushion (10), and arc-shaped notches (12) are provided on both sides of the extension portion (11); when the seat cushion (10) and the back cushion (20) are detachably connected, a support for connecting the seat cushion (10) and the back cushion (20) is also included. A connection structure (3) of a cushion (20), the connection structure (3) comprising a sleeve strip (30), an insertion strip (31), and a first locking bolt (32), the insertion strip (31) being slidably inserted in the sleeve strip (30), the first locking bolt (32) being used to lock the insertion strip (31) with the sleeve strip (30), one end of the sleeve strip (30) away from the insertion strip (31) being connected to the seat cushion (10), and one end of the insertion strip (31) away from the sleeve strip (30) being connected to the back cushion (20).

2. A plastic mesh cushion according to claim 1, characterized in that: A seat cushion (10) or a back cushion (20) comprises two layers of plastic nets and an edge binding cloth bonded to the edges of the two layers of plastic nets.

3. A plastic mesh cushion according to claim 1, characterized in that: It also comprises a first connecting belt (14), a second connecting belt (15), and a connecting assembly (4) for connecting the first connecting belt (14) and the second connecting belt (15); one end of the first connecting belt (14) is connected to the extension portion (11).

4. A plastic mesh cushion according to claim 3, characterized in that: The connecting assembly (4) comprises a fixing seat (40), an insert block (42), and a second locking bolt (44); a slot is provided at one end of the fixing seat (40), the insert block (42) is slidably inserted in the slot, a through hole (400) is provided at the top of the fixing seat (40) and is communicated with the slot, a plurality of thread grooves (420) are provided on the insert block (42) along its length direction, the second locking bolt (44) passes through the through hole (400) and is threadedly connected to one of the thread grooves (420), the other end of the first connecting belt (14) is connected to the insert block (42), and one end of the second connecting belt (15) is connected to the fixing seat (40).

5. The plastic mesh seat cushion according to claim 1, characterized in that: First binding straps (22) are provided on both sides of the back cushion (20).

6. A plastic mesh cushion according to claim 5, characterized in that: Two second binding straps (23) are provided on a side of the back cushion (20) away from the seat cushion (10).

7. A plastic mesh cushion according to claim 6, characterized in that: The first binding belt (22) and the second binding belt (23) are both elastic belts.

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