CN114099103A - Plastic inflatable cushion unit with tenon, plastic hard skeleton unit with groove and connecting device - Google Patents

Abstract

A plastic inflatable cushion unit with tenon, a plastic hard skeleton unit with groove and a connecting device belong to daily necessities for plastic molding and bonding. The invention comprises a buttock plastic inflatable cushion, a back plastic inflatable cushion, a tenon strip, a U-shaped plastic hard skeleton with the same shape as the left end surface and the right end surface of the outer contour of the buttock plastic inflatable cushion after being filled with air, and a U-shaped plastic hard skeleton with the same shape as the left end surface and the right end surface of the outer contour of the back plastic inflatable cushion after being filled with air, wherein the tenon strip is inserted into a groove on the U-shaped plastic hard skeleton, so that the inflatable cushion and the U-shaped plastic hard skeleton are connected into a whole and are tensioned. The inflatable cushion is used after being inflated, so that the problem that the inflatable cushion is unstable in use is solved, and the problem that a rigid part is easy to injure a human body in use is also solved.

Description

Plastic inflatable cushion unit with tenon, plastic hard skeleton unit with groove and connecting device

Technical Field

The present invention belongs to the field of plastic formed and adhered articles for daily use, and is especially suitable for plastic inflated cushion unit with tenon and hard plastic skeleton unit with slot and their connecting device.

Background

There is a need to develop a plastic inflatable cushion unit with tenon, a plastic hard skeleton unit with groove and a connecting device.

The existing device is made of rigid materials and hard connection is adopted among all the parts, the structure has the defects of heavy weight, high cost, inconvenient folding, storage and transportation, rigid connection structure, and troublesome disassembly and assembly because the foldable parts are all pin structures, and is easy to cause injury to human bodies in the using process.

The other device is a light inflatable cushion structure, but the structure is not supported by a hard framework, so that a person who is full of air can not be stable when the person moves on the inflatable cushion, the person who is full of air is easy to fall down when the person moves, and the whole cushion can be scrapped after air leaks from a certain position because the cushion is a whole.

Disclosure of Invention

The invention aims to solve the problems that an inflatable cushion is unstable when in use, a rigid structure device is easy to hurt the body and the like, and further provides a plastic inflatable cushion unit with a tenon, a plastic hard skeleton unit with a groove and a connecting device.

The invention relates to a plastic inflatable cushion unit with a tenon, which comprises a hip plastic inflatable cushion, a back plastic inflatable cushion and a tenon strip, wherein the left view of the upper surface of the left end of the hip plastic inflatable cushion after being inflated is a U-shaped surface of a plane section; the part of the hip plastic inflatable cushion extending to the waist is an arc surface with gradually reduced height, and is bonded with the back plastic inflatable cushion when the height is reduced to be equal to the height of the back plastic inflatable cushion; the front and the back of the part, close to the back inflatable cushion and the hip plastic inflatable cushion, of the back inflatable cushion are respectively provided with a concave hole which is regarded as an inward concave; each inflatable soft cushion is provided with an inflation and deflation hole; vertical tenon strips are respectively bonded at the intersection joints of every two adjacent surfaces at the outer sides of the vertical four walls of the hip plastic inflatable cushion and the back plastic inflatable cushion; the length of the tenon strip is adapted to the height of the corresponding position of the plastic inflatable cushion, and the tenon strip is connected with the groove on the plastic hard skeleton unit with the groove.

The plastic inflatable cushion unit with the tenon also comprises a head plastic inflatable cushion, wherein the head plastic inflatable cushion is bonded on the right end of the back plastic inflatable cushion; the main view of the plastic inflatable cushion of the head is a gradually rising arc surface; the plastic inflatable cushion at the head part is provided with an inflation and deflation hole.

The invention relates to a grooved plastic hard skeleton unit, which comprises a U-shaped plastic hard skeleton with the same shape as the left and right end surfaces of the outer contour of a inflated buttock plastic cushion, and a U-shaped plastic hard skeleton with the same shape as the left and right end surfaces of the outer contour of the inflated back plastic cushion, wherein the vertical part of the U-shaped plastic hard skeleton on the left end surface of the inflated buttock plastic cushion and the right end surface of the inflated back plastic cushion is opposite to the inflated cushion; the groove is connected with the tenon strip on the plastic inflatable cushion unit with the tenon.

The invention relates to a grooved plastic hard skeleton unit, which comprises at least three U-shaped plastic hard skeletons, a first soft rope, a second soft rope, a third soft rope, a fourth soft rope, a first hard skeleton supporting rod, a second hard skeleton supporting rod, a third hard skeleton supporting rod and a fourth hard skeleton supporting rod, wherein the three U-shaped plastic hard skeletons are sequentially arranged from left to right; one end of a second soft rope is movably connected with the upper end of a front support arm of the U-shaped plastic hard framework at the right end, and the other end of the second soft rope is movably and tightly connected with the lower end of a front support arm of the middle U-shaped plastic hard framework; one end of a third soft rope is movably connected with the upper end of the rear support arm of the U-shaped plastic hard framework at the left end, and the other end of the third soft rope is movably and tightly connected with the lower end of the rear support arm of the middle U-shaped plastic hard framework; one end of a fourth soft rope is movably connected with the upper end of the rear support arm of the U-shaped plastic hard framework at the right end, and the other end of the fourth soft rope is movably and tightly connected with the lower end of the rear support arm of the middle U-shaped plastic hard framework; one end of the first hard framework supporting rod is movably connected with the lower end of a front support arm of the U-shaped plastic hard framework at the left end, and the other end of the first hard framework supporting rod is movably connected with the lower end of a front support arm of the middle U-shaped plastic hard framework; one end of a second hard framework supporting rod is movably connected with the lower end of a front support arm of the U-shaped plastic hard framework at the right end, and the other end of the second hard framework supporting rod is movably connected with the lower end of a front support arm of the middle U-shaped plastic hard framework; one end of a third hard framework supporting rod is movably connected with the lower end of the rear arm of the U-shaped plastic hard framework at the left end, and the other end of the third hard framework supporting rod is movably connected with the lower end of the rear arm of the middle U-shaped plastic hard framework; one end of the fourth hard framework supporting rod is movably connected with the lower end of the rear arm of the U-shaped plastic hard framework at the right end, and the other end of the fourth hard framework supporting rod is movably connected with the lower end of the rear arm of the middle U-shaped plastic hard framework.

The grooved plastic hard skeleton unit also comprises a leg supporting plate and supporting plate supporting rods, wherein the supporting plate supporting rods are respectively erected on the front supporting arm and the rear supporting arm of the middle U-shaped plastic hard skeleton, and one end of each supporting plate supporting rod is connected with the front supporting arm and the rear supporting arm of the middle U-shaped plastic hard skeleton; the supporting rod of the supporting plate is in an inverted L shape, and the other end of the supporting rod of the supporting plate is connected with the leg supporting plate.

The invention relates to a device formed by connecting a plastic inflatable cushion unit with a tenon and a plastic hard skeleton unit with a groove, which comprises the plastic inflatable cushion unit with the tenon and the plastic hard skeleton unit with the groove; the plastic inflatable cushion unit with the tenon comprises a hip plastic inflatable cushion, a back plastic inflatable cushion and a tenon strip; the grooved plastic hard skeleton unit comprises a U-shaped plastic hard skeleton with the same shape as the left and right end faces of the outer contour of the inflated buttock plastic cushion and a U-shaped plastic hard skeleton with the same shape as the left and right end faces of the outer contour of the inflated back plastic cushion, and vertical tenon strips are respectively bonded at the intersection of every two adjacent surfaces of the outer sides of the vertical four walls of the inflated buttock plastic cushion and the inflated back plastic cushion; the length of the tenon strip is adapted to the height of the corresponding position of the plastic inflatable cushion, the edges of the vertical part of the U-shaped plastic hard framework at the left end surface of the hip plastic inflatable cushion and the right end surface of the back plastic inflatable cushion, which are opposite to the inflatable cushion, are connected with a vertical groove, the edges of two sides of the vertical part of the U-shaped plastic hard framework between the hip plastic inflatable cushion and the back plastic inflatable cushion are respectively connected with a vertical groove, and the length of the grooves is adapted to the length of the vertical part of the U-shaped plastic hard framework; the length of the tenon strip in the vertical direction is smaller than that of the groove in the vertical direction; the tenon strip is connected with the groove in an inserting mode.

The tenon strip is in an equal-interval broken strip type structure; the tenon strip is formed by alternately connecting tenon blocks and tenon connecting strips, the upper end part and the lower end part of the tenon strip are the tenon blocks, and the vertical length of the tenon blocks is smaller than that of the tenon connecting strips between two adjacent tenon blocks; the groove is in an equidistant strip-breaking structure, the groove is formed by alternately connecting groove blocks and groove connecting strips, the upper end part and the lower end part of the groove are both the groove blocks, and the length of the tenon strip is smaller than that of the groove; the tenon block is a dovetail tenon, and the groove block is a dovetail groove; the tenon connecting strip and the groove connecting strip correspond to each other when the tenon block is inserted into the groove block.

The invention relates to a device formed by connecting a plastic inflatable cushion unit with a tenon and a plastic hard skeleton unit with a groove, which also comprises a rope, wherein the rope is arranged between the front support arm and the rear support arm of the U-shaped plastic hard skeleton on the left side, one end of the rope is connected with the upper end of the front support arm of the U-shaped plastic hard skeleton, the other end of the rope is connected with the upper end of the rear support arm of the U-shaped plastic hard skeleton, and the length of the rope is equal to the length of an opening at the upper end between the front support arm and the rear support arm of the U-shaped plastic hard skeleton.

The invention relates to a device formed by connecting a plastic inflatable cushion unit with a tenon and a plastic hard skeleton unit with a groove, which also comprises a shank positioning sleeve, wherein a shank positioning sleeve is respectively erected in the front concave hole and the rear concave hole of the rear back inflatable cushion and is respectively bonded with the front support arm and the rear support arm of the middle U-shaped plastic hard skeleton, and each shank positioning sleeve is respectively provided with an inflation and deflation hole.

The invention relates to a device formed by connecting a plastic inflatable cushion unit with tenon and a plastic hard skeleton unit with groove, which also comprises a waistband and a handrail, wherein one end of the waistband is fixed on the front support arm of the U-shaped plastic hard skeleton in the middle, and the other end of the waistband is fixed on the rear support arm of the U-shaped plastic hard skeleton in the middle; the outer surfaces of the front and the rear support arms of the U-shaped plastic hard framework on the right side are respectively provided with a handrail which is connected with the support arms of the U-shaped plastic hard framework on the right side.

The invention has the following effects: the invention not only solves the problem that the inflatable cushion without a hard framework is unstable in use, but also solves the problem that the rigid piece without the inflatable cushion is easy to cause injury to human body in use. The invention integrates the advantages of the rigid framework and the inflatable cushion and removes the disadvantages of the rigid framework and the inflatable cushion, thereby realizing the ingenious combination of the two schemes. Because the hard skeleton is made of plastic and the inflatable cushion is made of plastic, the hard skeleton unit and the inflatable cushion unit are convenient to fold and assemble, particularly convenient to disassemble and assemble, light in weight, small in volume after being folded, and certain part can be replaced independently when damaged or leaked.

The plastic inflatable cushion unit with the tenon is composed of a plurality of inflatable cushions, and the structure ensures that the device has the characteristics of small volume, light weight, convenient sale, mailing and transportation, convenient storage, low manufacturing cost, easy realization and convenient popularization under the non-inflated state.

The grooved plastic hard skeleton unit consists of a plurality of U-shaped plastic hard skeletons, and is connected into a triangular stable frame by using soft ropes and hard skeleton supporting rods, the edges of the plastic inflatable cushion unit are tightened by a tongue-and-groove inserting mode, the bottom edges of two adjacent U-shaped plastic hard skeletons are connected into a whole by the hard skeleton supporting rods, and the open ends of the U-shaped plastic hard skeletons at the left side and the right side and the closed end of the middle U-shaped skeleton are tightened by the soft ropes to form a stable triangular structure, so that the stability of the inflatable cushion unit is effectively enhanced.

Drawings

Figure 1 is an overall front view of the plastic inflatable cushion unit with the tenons of the present invention.

Figure 2 is an overall top plan view of the plastic inflatable cushion unit with tenons of the present invention.

Figure 3 is an overall left side view of the plastic inflatable cushion unit with the tenon of the present invention.

Fig. 4 is an overall front view of the grooved plastic hard skeleton unit of the present invention.

Fig. 5 is an overall top view of the grooved plastic rigid skeletal unit of the present invention.

Fig. 6 is an overall bottom view of the slotted plastic hard skeleton unit of the present invention.

FIG. 7 is an overall front view of the device of the present invention formed by joining a plastic inflatable cushion unit with a tongue and a rigid frame unit with a groove.

FIG. 8 is a top plan view of the integral attachment of the tenoned plastic inflatable cushion unit and the grooved plastic rigid frame unit of the present invention.

FIG. 9 is an overall left side view of the device of the present invention connected by a tenon and groove plastic inflatable cushion unit and rigid skeletal unit.

FIG. 10 is a side view of the overall construction of the gibbs

FIG. 11 is a partial enlarged view of the area A in FIG. 10

FIG. 12 is a front view of the overall construction of the tenon strip

FIG. 13 is a partial enlarged view of the area B in FIG. 12

FIG. 14 is a front view of the overall construction of the tank

FIG. 15 is a partial enlarged view of the area C in FIG. 14

FIG. 16 is a side view of the overall construction of the trough

FIG. 17 is a partial enlarged view of region D in FIG. 16

FIG. 18 is a schematic view of the connection of a tongue and groove

FIG. 19 is a partial enlarged view of the area E in FIG. 18

FIG. 20 is a sectional view taken along line A-A in FIG. 18

Detailed Description

First embodiment, the plastic inflatable cushion unit with tenon of this embodiment is composed of a plastic inflatable cushion for buttocks 1, a plastic inflatable cushion for back 2 and a tenon strip 3. The upper surface of the inflated left end of the hip plastic inflatable cushion 1 is a U-shaped surface 1-2 when viewed from the left, wherein the planar section 1-1 is the main surface; the part of the hip plastic inflatable cushion 1 extending to the waist is an arc surface with gradually reduced height, and is bonded with the back plastic inflatable cushion 2 when the height is reduced to be equal to the height of the back plastic inflatable cushion 2; the back inflatable cushion 2 and the hip plastic inflatable cushion 1 are respectively provided with a concave hole 1-3 at the front and the back near the hip plastic inflatable cushion 1; each inflatable soft cushion is provided with an inflation and deflation hole 10; the crossing joint of every two adjacent surfaces at the outer sides of the vertical four walls of the hip plastic inflatable cushion 1 and the back plastic inflatable cushion 2 is respectively bonded with a vertical tenon strip 3; the length of the tenon strip 3 is adapted to the height of the corresponding position of the plastic inflatable cushion, and the tenon strip 3 is connected with the groove 32 on the plastic hard skeleton unit with the groove.

The second embodiment is different from the first embodiment in that the plastic inflatable cushion unit with the tenon further comprises a head plastic inflatable cushion 5, and the head plastic inflatable cushion 5 is bonded on the right end of the back plastic inflatable cushion 2; the main view of the plastic inflatable cushion 5 of the head is a gradually rising arc surface; the plastic inflatable cushion 5 of the head is provided with an inflation and deflation hole 10. Other components and connection relationships are the same as those in the first embodiment.

In the third embodiment, the grooved plastic hard skeleton unit of the third embodiment comprises a U-shaped plastic hard skeleton 31 having the same shape as the left and right end surfaces of the outer contour of the inflated hip plastic cushion 1, and a U-shaped plastic hard skeleton 31 having the same shape as the left and right end surfaces of the outer contour of the inflated back plastic cushion 2, wherein a vertical groove 32 is connected to the left end surface of the inflated hip plastic cushion 1 and the edge of the opposite side of the inflated back plastic cushion 2 to the vertical part of the U-shaped plastic hard skeleton 31, a vertical groove 32 is connected to the edges of the two sides of the vertical part of the U-shaped plastic hard skeleton 31 between the inflated hip plastic cushion 1 and the inflated back plastic cushion 2, and the length of the groove 32 is adapted to the length of the vertical part of the U-shaped plastic hard skeleton 31; the slot 32 is connected to the tenon 3 of the plastic inflatable cushion unit with tenon.

The difference between the grooved plastic hard skeleton unit of the fourth embodiment and the grooved plastic hard skeleton unit of the third embodiment is that the grooved plastic hard skeleton unit of the fourth embodiment comprises at least three U-shaped plastic hard skeletons 31, a first soft rope 33-1, a second soft rope 33-2, a third soft rope 33-3, a fourth soft rope 33-4, a first hard skeleton support rod 34-1, a second hard skeleton support rod 34-2, a third hard skeleton support rod 34-3 and a fourth hard skeleton support rod 34-4, the three U-shaped plastic hard skeletons 31 are sequentially arranged from left to right, a soft rope and a hard skeleton connecting rod are arranged between the U-shaped plastic hard skeletons 31 at the left and right ends and the middle U-shaped plastic hard skeleton 31, one end of the first soft rope 33-1 is actively connected with the upper end of the front arm of the U-shaped plastic hard skeleton 31 at the left end, and the other end of the first soft rope 33-1 is actively tightened with the lower end of the front arm of the middle U-shaped plastic hard skeleton 31 Connecting; one end of a second soft rope 33-2 is movably connected with the upper end of a front support arm of the U-shaped plastic hard framework 31 at the right end, and the other end of the second soft rope 33-2 is movably and tightly connected with the lower end of the front support arm of the middle U-shaped plastic hard framework 31; one end of a third soft rope 33-3 is in active connection with the upper end of the rear arm of the U-shaped plastic hard framework 31 at the left end, and the other end of the third soft rope 33-3 is in active tight connection with the lower end of the rear arm of the U-shaped plastic hard framework 31 in the middle; one end of a fourth soft rope 33-4 is in active connection with the upper end of the rear arm of the U-shaped plastic hard framework 31 at the right end, and the other end of the fourth soft rope 33-4 is in active tight connection with the lower end of the rear arm of the U-shaped plastic hard framework 31 in the middle; one end of the first hard framework supporting rod 34-1 is movably connected with the lower end of a front support arm of the U-shaped plastic hard framework 31 at the left end, and the other end of the first hard framework supporting rod 34-1 is movably connected with the lower end of a front support arm of the middle U-shaped plastic hard framework 31; one end of the second hard skeleton supporting rod 34-2 is movably connected with the lower end of the front support arm of the U-shaped plastic hard skeleton 31 at the right end, and the other end of the second hard skeleton supporting rod 34-2 is movably connected with the lower end of the front support arm of the middle U-shaped plastic hard skeleton 31; one end of a third hard framework supporting rod 34-3 is movably connected with the lower end of the rear arm of the U-shaped plastic hard framework 31 at the left end, and the other end of the third hard framework supporting rod 34-3 is movably connected with the lower end of the rear arm of the middle U-shaped plastic hard framework 31; one end of the fourth hard skeleton supporting rod 34-4 is movably connected with the lower end of the rear arm of the U-shaped plastic hard skeleton 31 at the right end, and the other end of the fourth hard skeleton supporting rod 34-4 is movably connected with the lower end of the rear arm of the middle U-shaped plastic hard skeleton 31. The supporting arms at two sides of the opening end of the adjacent U-shaped plastic hard framework 31 are connected by soft ropes, so that the problem that the soft cushion is unstable is solved, and the problem that a rigid structure is easy to hurt people is also eliminated. In order to improve the overall stability of the U-shaped plastic hard frameworks 31, the two adjacent U-shaped plastic hard frameworks 31 on the left and the right are actively connected by hard framework support rods. So that the whole device becomes a stable whole. Other compositions and connection relationships are the same as those in the third embodiment.

Fifth, the grooved plastic hard skeleton unit of the present embodiment is different from the third or fourth embodiment in that it further includes leg supporting plates 19 and supporting plate supporting rods 26, one supporting plate supporting rod 26 is erected on each of the front and rear supporting arms of the middle U-shaped plastic hard skeleton 31, and one end of each supporting plate supporting rod 26 is connected to the front and rear supporting arms of the middle U-shaped plastic hard skeleton 31; the support plate strut 26 is inverted L-shaped, and the other end of the support plate strut 26 is connected with the leg support plate 19. Other compositions and connection relations are the same as those of the third or fourth embodiment.

The device formed by connecting the plastic inflatable cushion unit with the tenon and the plastic hard skeleton unit with the groove comprises a plastic inflatable cushion unit with the tenon and a plastic hard skeleton unit with the groove; the plastic inflatable cushion unit with the tenon comprises a hip plastic inflatable cushion 1, a back plastic inflatable cushion 2 and a tenon strip 3; the grooved plastic hard skeleton unit comprises a U-shaped plastic hard skeleton 31 with the same shape as the left and right end faces of the outer contour of the inflated buttock plastic cushion 1 and a U-shaped plastic hard skeleton 31 with the same shape as the left and right end faces of the outer contour of the inflated back plastic cushion 2, and vertical tenon strips 3 are respectively bonded at the intersection joints of every two adjacent surfaces of the outer sides of the vertical four walls of the inflated buttock plastic cushion 1 and the inflated back plastic cushion 2; the length of the tenon strip 3 is adapted to the height of the corresponding position of the plastic inflatable cushion, the edges of the vertical part of the U-shaped plastic hard framework 31 on the left end surface of the hip plastic inflatable cushion 1 and the right end surface of the back plastic inflatable cushion 2 opposite to the inflatable cushion are connected with a vertical groove 32, the edges of two sides of the vertical part of the U-shaped plastic hard framework 31 between the hip plastic inflatable cushion 1 and the back plastic inflatable cushion 2 are respectively connected with a vertical groove 32, and the length of the groove 32 is adapted to the length of the vertical part of the U-shaped plastic hard framework 31; the length of the tenon strip 3 in the vertical direction is smaller than that of the groove 32 in the vertical direction; the tenon strip 3 is connected with the groove 32 in an inserting way.

A seventh embodiment is different from the sixth embodiment in that the tenon strip 3 is in an equidistant strip-broken structure; the tenon strip 3 is formed by alternately connecting tenon blocks 3-2 and tenon connecting strips 3-1, the upper end part and the lower end part of the tenon strip 3 are both the tenon blocks 3-2, and the vertical length of the tenon block 3-2 is less than that of the tenon connecting strip 3-1 between two adjacent sections of tenon blocks; the groove 32 is of an equidistant broken strip type structure, the groove 32 is formed by alternately connecting groove blocks 32-2 and groove connecting strips 32-1, the upper end part and the lower end part of the groove 32 are both the groove blocks 32-2, and the length of the tenon strip 3 is smaller than that of the groove 32; the tenon block 3-2 is a dovetail tenon, and the groove block 32-2 is a dovetail groove; when the tenon block 3-2 is inserted into the groove block 32-2, the tenon connecting strip 3-1 corresponds to the groove connecting strip 32-1 in position; the bottom of each segment of tenon 3-2 is tapered to facilitate the effective insertion and stabilization of each segment of tenon 3-2 in each segment of slot 32-2, and the insertion of the tenon is performed when the cushion is not inflated, and the extraction of the tenon is performed after some gas is released. This arrangement facilitates insertion of the tongue, extraction of the tongue and stabilisation of the assembly so that the tongue does not become dislodged from the slot 32 during use. Other components and connection relationships are the same as those in the sixth embodiment.

Eighth embodiment, the device formed by connecting the plastic inflatable cushion unit with tenon and the plastic hard skeleton unit with groove of the seventh embodiment is different from the seventh embodiment in that the device further comprises a rope 31-1, the rope 31-1 is arranged between the front and rear arms of the left U-shaped plastic hard skeleton 31, one end of the rope 31-1 is connected with the upper end of the front arm of the U-shaped plastic hard skeleton 31, the other end of the rope 31-1 is connected with the upper end of the rear arm of the U-shaped plastic hard skeleton 31, and the length of the rope 31-1 is equal to the length of the opening at the upper end between the front and rear arms of the U-shaped plastic hard skeleton 31. Other components and connection relationships are the same as those in embodiment seven.

Ninth embodiment, the difference between the device formed by connecting the plastic inflatable cushion unit with tenon and the plastic hard skeleton unit with groove of the eighth embodiment is that the device further comprises a shank positioning sleeve 28, wherein a shank positioning sleeve 28 is respectively erected inside the front and rear concave holes 1-3 of the inflatable cushion 2 at the rear back part and is respectively bonded with the front and rear support arms of the middle U-shaped plastic hard skeleton 31, and each shank positioning sleeve 28 is respectively provided with an inflation and deflation hole 10. The other components and the connection relationship are the same as those in embodiment eight.

Tenth embodiment, the difference between the device formed by connecting the plastic inflatable cushion unit with tenon and the plastic hard skeleton unit with groove of the present embodiment and the ninth embodiment is that it further comprises a waist belt 24 and a handrail 25, wherein one end of the waist belt 24 is fixed on the front arm of the middle U-shaped plastic hard skeleton 31, and the other end of the waist belt 24 is fixed on the rear arm of the middle U-shaped plastic hard skeleton 31; the outer surfaces of the front and rear support arms of the right U-shaped plastic hard framework 31 are respectively provided with a handrail 25 and connected with the front and rear support arms of the right U-shaped plastic hard framework 31; other compositions and connection relationships are the same as those in the ninth embodiment.

The invention can be made by plastic blow molding, and then all air cushions are mutually bonded into a use state. The air cushions can be connected by the thread gluing, so that the damaged air cushion can be maintained and replaced conveniently without being scrapped integrally. Particularly, after deflation, each air cushion can be independently retracted, so that the whole package is convenient.

Claims (10)

1. The plastic inflatable cushion unit with the tenon comprises a hip plastic inflatable cushion (1) and a back plastic inflatable cushion (2), and is characterized by further comprising a tenon strip (3), wherein the upper surface of the left end of the hip plastic inflatable cushion (1) after inflation is mainly a U-shaped surface (1-2) of a plane section (1-1); the part of the hip plastic inflatable cushion (1) extending to the waist is an arc surface with gradually reduced height, and is bonded with the back plastic inflatable cushion (2) when the height is reduced to be equal to the height of the back plastic inflatable cushion (2); the front and the back of the position, close to the hip plastic inflatable cushion (1), of the back inflatable cushion (2) are respectively provided with a concave hole (1-3) which is viewed as a concave shape; each inflatable soft cushion is provided with an inflation and deflation hole (10); vertical tenon strips (3) are respectively bonded at the intersection joints of every two adjacent surfaces of the outer sides of the vertical four walls of the hip plastic inflatable cushion (1) and the back plastic inflatable cushion (2); the length of the tenon strip (3) is adapted to the height of the corresponding position of the plastic inflatable cushion, and the tenon strip (3) is connected with a groove (32) on the plastic hard skeleton unit with the groove.

2. The plastic inflatable cushion unit with tenon according to claim 1, further comprising a plastic inflatable cushion (5) for the head part, wherein the plastic inflatable cushion (5) for the head part is bonded on the right end of the plastic inflatable cushion (2) for the back part; the main view of the plastic inflatable cushion (5) of the head is an arc-shaped surface which gradually rises; an inflation and deflation hole (10) is arranged on the plastic inflation cushion (5) at the head.

3. The plastic hard skeleton unit with the groove is characterized by comprising a U-shaped plastic hard skeleton (31) with the same shape as the left and right end surfaces of the outer contour of the inflated plastic cushion (1) at the buttocks and a U-shaped plastic hard skeleton (31) with the same shape as the left and right end surfaces of the outer contour of the inflated plastic cushion (2) at the back, a vertical groove (32) is connected with the edge of the vertical part of the U-shaped plastic hard framework (31) on the left end surface of the hip plastic inflatable cushion (1) and the right end surface of the back plastic inflatable cushion (2) opposite to the inflatable cushion, the vertical grooves (32) are respectively connected at the two side edges of the vertical part of the U-shaped plastic hard framework (31) between the hip plastic inflatable cushion (1) and the back plastic inflatable cushion (2), and the length of each groove (32) is matched with that of the vertical part of the U-shaped plastic hard framework (31); the groove (32) is connected with the tenon strip (3) on the plastic inflatable cushion unit with the tenon.

4. The grooved plastic hard skeleton unit of claim 3, comprising at least three U-shaped plastic hard skeletons (31), a first soft rope (33-1), a second soft rope (33-2), a third soft rope (33-3), a fourth soft rope (33-4), a first hard skeleton support rod (34-1), a second hard skeleton support rod (34-2), a third hard skeleton support rod (34-3), and a fourth hard skeleton support rod (34-4), wherein the three U-shaped plastic hard skeletons (31) are arranged in sequence from left to right, the soft rope and the hard skeleton connecting rod are arranged between the U-shaped plastic hard skeletons (31) at the left and right ends and the middle U-shaped plastic hard skeleton (31), one end of the first soft rope (33-1) is actively connected with the upper end of the front supporting arm of the U-shaped plastic hard skeleton (31) at the left end, the other end of the first soft rope (33-1) is in active tight connection with the lower end of the front supporting arm of the middle U-shaped plastic hard framework (31); one end of a second soft rope (33-2) is movably connected with the upper end of the front support arm of the U-shaped plastic hard framework (31) at the right end, and the other end of the second soft rope (33-2) is movably and tightly connected with the lower end of the front support arm of the middle U-shaped plastic hard framework (31); one end of a third soft rope (33-3) is movably connected with the upper end of the rear arm of the U-shaped plastic hard framework (31) at the left end, and the other end of the third soft rope (33-3) is movably and tightly connected with the lower end of the rear arm of the middle U-shaped plastic hard framework (31); one end of a fourth soft rope (33-4) is movably connected with the upper end of the rear arm of the U-shaped plastic hard framework (31) at the right end, and the other end of the fourth soft rope (33-4) is movably and tightly connected with the lower end of the rear arm of the middle U-shaped plastic hard framework (31); one end of a first hard framework supporting rod (34-1) is movably connected with the lower end of a front support arm of the U-shaped plastic hard framework (31) at the left end, and the other end of the first hard framework supporting rod (34-1) is movably connected with the lower end of the front support arm of the middle U-shaped plastic hard framework (31); one end of a second hard framework supporting rod (34-2) is movably connected with the lower end of a front support arm of the U-shaped plastic hard framework (31) at the right end, and the other end of the second hard framework supporting rod (34-2) is movably connected with the lower end of the front support arm of the middle U-shaped plastic hard framework (31); one end of a third hard framework supporting rod (34-3) is movably connected with the lower end of the rear arm of the U-shaped plastic hard framework (31) at the left end, and the other end of the third hard framework supporting rod (34-3) is movably connected with the lower end of the rear arm of the middle U-shaped plastic hard framework (31); one end of a fourth hard framework supporting rod (34-4) is movably connected with the lower end of the rear arm of the U-shaped plastic hard framework (31) at the right end, and the other end of the fourth hard framework supporting rod (34-4) is movably connected with the lower end of the rear arm of the middle U-shaped plastic hard framework (31).

5. The grooved plastic hard skeleton unit according to claim 3 or 4, characterized in that it further comprises leg supporting plates (19) and supporting plate supporting rods (26), one supporting plate supporting rod (26) is erected on each of the front and rear arms of the middle U-shaped plastic hard skeleton (31), and one end of the supporting plate supporting rod (26) is connected with the front and rear arms of the middle U-shaped plastic hard skeleton (31); the supporting plate supporting rod (26) is in an inverted L shape, and the other end of the supporting plate supporting rod (26) is connected with the leg supporting plate (19).

6. The device formed by connecting the plastic inflatable cushion unit with the tenon and the plastic hard skeleton unit with the groove comprises the plastic inflatable cushion unit with the tenon and the plastic hard skeleton unit with the groove; the plastic inflatable cushion unit with the tenon comprises a hip plastic inflatable cushion (1), a back plastic inflatable cushion (2) and a tenon strip (3); the grooved plastic hard skeleton unit comprises a U-shaped plastic hard skeleton (31) with the same shape as the left and right end surfaces of the outer contour of the inflated buttock plastic cushion (1) and a U-shaped plastic hard skeleton (31) with the same shape as the left and right end surfaces of the outer contour of the inflated back plastic cushion (2), and is characterized in that a vertical tenon strip (3) is respectively bonded at the intersection joint of every two adjacent surfaces of the outer sides of the vertical four walls of the inflated buttock plastic cushion (1) and the inflated back plastic cushion (2); the length of the tenon strip (3) is adapted to the height of the corresponding position of the plastic inflatable cushion, a vertical groove (32) is connected with the edges of the vertical part of the U-shaped plastic hard skeleton (31) at the left end surface of the hip plastic inflatable cushion (1) and the right end surface of the back plastic inflatable cushion (2) opposite to the inflatable cushion, two vertical grooves (32) are respectively connected with the edges of the two sides of the vertical part of the U-shaped plastic hard skeleton (31) between the hip plastic inflatable cushion (1) and the back plastic inflatable cushion (2), and the length of each groove (32) is adapted to the length of the vertical part of the U-shaped plastic hard skeleton (31); the length of the tenon strip (3) in the vertical direction is smaller than that of the groove (32) in the vertical direction; the tenon strip (3) is connected with the groove (32) in an inserting way.

7. The device for connecting a plastic inflatable cushion unit with a tenon and a plastic hard framework unit with a slot according to claim 6, wherein the tenon strips (3) are in an equally-spaced strip-breaking structure; the tenon strip (3) is formed by alternately connecting tenon blocks (3-2) and tenon connecting strips (3-1), the upper end part and the lower end part of the tenon strip (3) are both the tenon blocks (3-2), and the vertical length of the tenon blocks (3-2) is smaller than that of the tenon connecting strips (3-1) between two adjacent tenon blocks; the groove (32) is in an equidistant strip-breaking structure, the groove (32) is formed by alternately connecting groove blocks (32-2) and groove connecting strips (32-1), and the upper end part and the lower end part of the groove (32) are both the groove blocks (32-2); the length of the tenon strip (3) is less than that of the groove (32); the tenon block (3-2) is a dovetail tenon, and the groove block (32-2) is a dovetail groove; when the tenon block (3-2) is inserted into the groove block (32-2), the tenon connecting strip (3-1) corresponds to the groove connecting strip (32-1).

8. The apparatus as claimed in claim 7, further comprising a rope (31-1), wherein the rope (31-1) is disposed between the front and rear arms of the left U-shaped rigid plastic frame (31), one end of the rope (31-1) is connected to the upper end of the front arm of the U-shaped rigid plastic frame (31), the other end of the rope (31-1) is connected to the upper end of the rear arm of the U-shaped rigid plastic frame (31), and the length of the rope (31-1) is equal to the length of the opening at the upper end between the front and rear arms of the U-shaped rigid plastic frame (31).

9. The device for connecting a plastic inflatable cushion unit with a tenon and a plastic hard skeleton unit with a slot according to claim 6, 7 or 8, characterized in that the device further comprises a shank positioning sleeve (28), wherein a shank positioning sleeve (28) is respectively erected in the front and rear concave holes (1-3) of the inflatable cushion (2) at the rear back part and is respectively bonded with the front and rear support arms of the U-shaped plastic hard skeleton (31) at the middle part, and each shank positioning sleeve (28) is provided with an inflation and deflation hole (10).

10. The apparatus of claim 9, further comprising a waist belt (24) and a handrail (25), wherein one end of the waist belt (24) is fixed to the front arm of the middle U-shaped rigid plastic frame (31), and the other end of the waist belt (24) is fixed to the rear arm of the middle U-shaped rigid plastic frame (31); the outer surfaces of the front and the rear supporting arms of the U-shaped plastic hard framework (31) on the right side are respectively provided with a handrail (25) which is connected with the front and the rear supporting arms of the U-shaped plastic hard framework (31) on the right side.

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