CN110367772B

CN110367772B - Plastic cup

Info

Publication number: CN110367772B
Application number: CN201910667775.7A
Authority: CN
Inventors: 不公告发明人
Original assignee: Wuyi Xinyangguang Industry & Trade Co ltd
Current assignee: Wuyi Xinyangguang Industry & Trade Co.,Ltd.
Priority date: 2019-07-23
Filing date: 2019-07-23
Publication date: 2021-07-27
Anticipated expiration: 2039-07-23
Also published as: CN110367772A

Abstract

The invention belongs to the technical field of cup articles, and particularly relates to a plastic cup which comprises a cup body; handles are symmetrically arranged on two sides of the cup body, an opening is formed in the upper end of the cup body, and a flange is arranged on the outer side of the upper end of the cup body; a lantern ring is arranged below the opening; the section of the lantern ring is L-shaped, and the lantern ring can slide up and down along the outer ring of the cup body; the inner side of the handle is provided with an inflatable air bag, the handle is arranged in a hollow manner, and an air hole is formed in the handle and communicated with the inside of the inflatable air bag; the inflatable air bag is communicated with the folding air bag through a first air passage arranged on the cup body; the other end of the folding air bag is connected with the inner wall of the lantern ring; according to the invention, the handle is gripped by the infant to squeeze the inflatable air bag, so that air is introduced into the foldable air bag, the foldable air bag and the lantern ring are matched to slide up and down, the flange is sealed when the infant does not drink water, the lantern ring is moved down when the infant needs to drink water, the flange is opened, the possibility of dust adhesion to the flange is reduced, and a certain safety protection is provided for the healthy growth of the infant.

Description

Plastic cup

Technical Field

The invention belongs to the technical field of cup articles, and particularly relates to a plastic cup.

Background

In daily life, cups are indispensable daily necessities, although there are many kinds of cups on the market, such as thermos cups, ordinary cups, and the like. Although the cups have different shapes, the cups can have approximately the same structure, namely, the cups comprise cup bodies for containing liquid and cup handles which are positioned outside the cup bodies and are integrally arranged with the cup bodies for being held by users. At present, the cup which is widely applied is a plastic cup, because the plastic cup has low cost and high processing speed.

However, with the development of economy and the progress of society, the education of infants is gradually paid more attention to the society, wherein the phenomenon is particularly obvious that the infants are fed into a kindergarten and read to be in a normal state, but the infants grow insufficiently and are extremely easy to be invaded by virus and bacteria, and particularly, if the sanitary control of the plastic cups for drinking by the infants is not enhanced, hidden dangers are buried in the healthy growth of the infants; the invention accordingly provides a plastic cup.

Disclosure of Invention

In order to make up for the defects of the prior art, the invention provides the plastic cup which is simple in structure and convenient to operate, an infant can squeeze the inflatable air bag by gripping the handle, air is led into the foldable air bag, the foldable air bag and the lantern ring slide up and down in a matching mode, the flange is sealed when the infant does not drink water, the lantern ring moves down when the infant needs the infant, the flange is opened, the possibility that dust is adhered to the flange is reduced, and a certain safety protection is provided for the healthy growth of the infant.

The technical scheme adopted by the invention for solving the technical problems is as follows: a plastic cup comprises a cup body; handles are symmetrically arranged on two sides of the cup body, an opening is formed in the upper end of the cup body, and a flange is arranged on the outer side of the upper end of the cup body; a lantern ring is arranged below the opening; the section of the lantern ring is L-shaped, and the lantern ring can slide up and down along the outer ring of the cup body; the inner side of the handle is provided with an inflatable air bag, the handle is arranged in a hollow manner, and an air hole is formed in the handle and communicated with the inside of the inflatable air bag; the inflatable air bag is communicated with the folding air bag through a first air passage arranged on the cup body; the other end of the folding air bag is connected with the inner wall of the lantern ring. When the infant drinking cup is in work, along with the development of economy and the progress of society, the infant education is gradually paid attention to the society, wherein the phenomenon is particularly obvious that the infant is fed into a kindergarten and is read to be in a normal state, the body of the infant grows insufficiently and completely, so the infant is extremely easy to be invaded by virus and bacteria, particularly, if the sanitary control of the plastic cup is not enhanced, the hidden danger is buried in the healthy growth of the infant; according to the foldable air bag, the flange at the upper end of the cup body is sealed by the lantern ring with the L-shaped section, specifically, the inflatable air bag is arranged on the inner side of the handle, when an infant stretches a hand into the handle to tightly hold the handle, the inflatable air bag is extruded at the moment, so that the internal air enters the foldable air bag through the air hole and the first air passage in sequence, the foldable air bag is rapidly expanded after being inflated, the lantern ring connected below is pushed to move downwards, the lantern ring moves downwards to expose the flange of the cup body, and the infant can drink water by contacting the mouth with the flange; if the drinking is finished, the handles on the two sides are squeezed, and at the moment, the gas in the folded air bag returns to the inflated air bag, so that the lantern ring returns to the upper end again to seal the flange; thereby this technical scheme is held the handle through the infant and is extruded the air bag of aerifing for in gas lets in folding gasbag, folding gasbag and lantern ring cooperation slide from top to bottom, realized sealed the flange when not drinking water, make the lantern ring move down again when needing, thereby open the flange, reduce the possibility of flange adhesion dust, provide certain safety protection to infant's healthy growth.

Preferably, at least two swinging plates are hinged above the lantern ring; the adjacent swing plates are connected through elastic sealing bags; an extrusion air bag is arranged below the end part of the swinging plate; the extrusion air bag is used for assisting the swinging plate to seal the upper end of the cup body; according to the invention, the swinging plate is hinged above the lantern ring, when drinking is not needed, the swinging plate can drive the connected elastic sealing bag to seal the upper end of the flange, and meanwhile, the extrusion air bag below the swinging plate can increase the contact area with the flange, so that the extrusion air bag is forcibly inserted into a gap between the flange and the lantern ring to seal the flange in all directions, the sealing property between the swinging plate and the lantern ring is further improved, the possibility of dust adhesion of the flange is further reduced, and a certain safety protection is provided for the healthy growth of infants; when the lantern ring moves downwards under the pushing of the folding air bag, the connected swing plates can be driven to move downwards, so that the swing plates swing along the hinged point, and the flanges are exposed.

Preferably, the middle part of the cup body is bonded with a limiting ring; the limiting ring is elastically arranged, and an annular groove is formed in the limiting ring; one side of the handle close to the cup body is fixedly connected with a sealing film; the space between the sealing film and the outer ring of the cup body is a cavity; the cavity is communicated with the annular groove through a second air passage arranged on the side wall of the cup body; the limiting ring limits the moving range of the sleeve ring, the possibility that the swinging plate is difficult to return due to excessive movement is reduced, meanwhile, the sleeve ring moves downwards to press the limiting ring, so that gas in the limiting ring is pressed, the gas in the annular groove is pressed into the cavity, the gas in the cavity is increased to push the sealing membrane to arch, the sealing membrane further contacts with the hand of an infant, the hand of the infant is fixed to a certain extent by matching with the inflatable air bag, and the phenomenon that a large amount of dust and other impurities are adhered due to falling of the plastic cup caused by unstable holding is reduced.

Preferably, a position corresponding to the upper end of the cup body is fixedly connected with a limit plate; the limiting plate is arranged in a hook shape and is made of elastic materials; according to the invention, the limit plate is arranged, so that the swinging plate can be gradually contacted with the hook-shaped limit plate when moving downwards, and is difficult to move continuously when moving to the lower part, so that the swinging plate is limited on one hand, the possibility that the swinging plate is difficult to return due to excessive movement is reduced, and on the other hand, the end part of the swinging plate can be rapidly moved when contacting by the hook-shaped limit plate, the moving friction is reduced, and the speed of exposing the flange is increased.

Preferably, a groove corresponding to a finger is arranged on the outer side of the inflatable air bag; elastic bulges are arranged on both sides of the groove; the groove arranged on the outer side of the inflatable air bag is just arranged corresponding to the finger, so that the finger can be conveniently gripped; on the other hand can cooperate the elastic bulge that both sides set up to slightly lock the finger, increases the travelling comfort of finger, and the gas cell of holding the department simultaneously is more yielding for inside the gas faster flows into folding gasbag in the gas cell, open the flange rapidly, make the flange expose, when sealing up the flange, do not influence the use of plastics cup.

Preferably, at least two first magnets are circumferentially arranged in the lantern ring; soft magnets are arranged at corresponding positions on the side wall of the cup body; the soft magnet is magnetically attracted with the first magnet; the folding air bag is internally provided with liquid, the outer side of the folding air bag is provided with a jet orifice, and a pressure valve is arranged in the jet orifice; when the plastic cup is used, the interior of the folding air bag is inflated so as to push the lantern ring to fall, and the pushing force is greater than the suction force between the first magnet and the soft magnet; when the plastic cup is used and the lantern ring returns to the upper end, the soft magnet in the flange can be attracted with the magnet I by magnetic force, so that sudden pressure is given to the folding air bag, the pressure is greater than a standard value set by the pressure valve, the pressure valve is opened at the moment, liquid in the flange can be sprayed out in a mist shape, the flange after use is disinfected and cleaned, the cleanness of the flange is improved, and a certain protection effect is provided for the healthy growth of infants.

The invention has the following beneficial effects:

1. according to the invention, the handle is gripped by the infant to squeeze the inflatable air bag, so that air is introduced into the foldable air bag, the foldable air bag and the lantern ring are matched to slide up and down, the flange is sealed when the infant does not drink water, the lantern ring is moved down when the infant needs to drink water, the flange is opened, the possibility of dust adhesion to the flange is reduced, and a certain safety protection is provided for the healthy growth of the infant.

2. According to the invention, the swinging plate is hinged above the lantern ring, when drinking is not needed, the swinging plate can drive the connected elastic sealing bag to seal the upper end of the flange, and the extrusion air bag below the swinging plate can increase the contact area with the flange, so that the swinging plate is forcibly inserted into the gap between the flange and the lantern ring to seal the flange in all directions, the sealing property between the swinging plate and the lantern ring is further improved, the possibility of dust adhesion of the flange is further reduced, and a certain safety protection is provided for the healthy growth of infants.

Drawings

The invention will be further explained with reference to the drawings.

FIG. 1 is a schematic perspective view of the present invention;

FIG. 2 is a front cross-sectional view of the present invention;

FIG. 3 is a schematic view of the working state of the present invention;

FIG. 4 is an enlarged view of a portion of FIG. 3 at A;

in the figure: the air bag type air-conditioning cup comprises a cup body 1, a handle 2, a flange 3, a lantern ring 4, an inflatable air bag 5, a first air passage 6, a folding air bag 7, a swinging plate 8, an elastic sealing bag 9, an extrusion air bag, a limiting ring 11, an annular groove 12, a sealing film 13, a second air passage 14, a limiting plate 15, a groove 16, an elastic bulge 17, a first magnet 18 and soft magnets 19.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.

As shown in fig. 1 to 4, the plastic cup of the present invention comprises a cup body 1; handles 2 are symmetrically arranged on two sides of the cup body 1, an opening is arranged at the upper end of the cup body 1, and a flange 3 is arranged on the outer side of the upper end of the cup body 1; a lantern ring 4 is arranged below the opening; the section of the lantern ring 4 is L-shaped, and the lantern ring 4 can slide up and down along the outer ring of the cup body 1; the inner side of the handle 2 is provided with an inflatable air bag 5, the handle 2 is arranged in a hollow manner, and an air hole is formed in the handle 2 and communicated with the interior of the inflatable air bag 5; the inflatable air bag 5 is communicated with the folding air bag 7 through a first air passage 6 arranged on the cup body 1; the other end of the folding air bag 7 is connected with the inner wall of the lantern ring 4. When the infant drinking cup is in work, along with the development of economy and the progress of society, the infant education is gradually paid attention to the society, wherein the phenomenon is particularly obvious that the infant is fed into a kindergarten and is read to be in a normal state, the body of the infant grows insufficiently and completely, so the infant is extremely easy to be invaded by virus and bacteria, particularly, if the sanitary control of the plastic cup is not enhanced, the hidden danger is buried in the healthy growth of the infant; according to the invention, the flange 3 at the upper end of the cup body 1 is sealed by arranging the lantern ring 4 with the L-shaped section, specifically, the inflatable air bag 5 is arranged on the inner side of the handle 2, when an infant extends a hand into the handle 2 to tightly hold the handle 2, the inflatable air bag 5 is extruded at the moment, so that the gas in the foldable air bag 7 sequentially enters the foldable air bag 7 through the air hole and the first air passage 6, the foldable air bag 7 is rapidly expanded after being inflated, the lantern ring 4 connected below is pushed to move downwards, the lantern ring 4 moves downwards to expose the flange 3 of the cup body 1, and the infant can drink water by contacting the mouth with the flange 3; if the drinking is finished, the handles 2 at the two sides are squeezed, and at the moment, the gas in the folding air bag 7 returns to the inflating air bag 5, so that the lantern ring 4 returns to the upper end to seal the flange 3; this technical scheme is through the infant grip handle 2 extrusion air bag 5 of aerifing for in gaseous letting in folding gasbag 7, folding gasbag 7 and lantern ring 4 cooperation are slided from top to bottom, have realized sealed flange 3 when not drinking water, make lantern ring 4 move down again when needing, thereby open flange 3, reduce the possibility of flange 3 adhesion dust, provide certain safety protection to infant's healthy growth.

As an embodiment, at least two swinging plates 8 are hinged above the lantern ring 4; the adjacent swing plates 8 are connected through elastic sealing bags 9; an extrusion air bag is arranged below the end part of the swinging plate 8; the extrusion air bag is used for assisting the swinging plate 8 to seal the upper end of the cup body 1; according to the invention, the swinging plate 8 is hinged above the lantern ring 4, when drinking is not needed, the swinging plate 8 can drive the connected elastic sealing bag 9 to seal the upper end of the flange 3, and meanwhile, the contact area between the pressing air bag below the swinging plate 8 and the flange 3 can be increased, so that the pressing air bag is forcibly inserted into a gap between the flange 3 and the lantern ring 4 to seal the flange 3 in all directions, the sealing property between the swinging plate 8 and the lantern ring 4 is further improved, the possibility of dust adhesion of the flange 3 is further reduced, and a certain safety protection is provided for the healthy growth of infants; when the collar 4 moves downwards under the push of the folded airbag 7, the connected swing plate 8 is driven to move downwards, so that the swing plate 8 swings along the hinge point, and the flange 3 is exposed.

As one embodiment, a limit ring 11 is bonded in the middle of the cup body 1; the limiting ring 11 is elastically arranged, and an annular groove 12 is formed in the limiting ring 11; one side of the handle 2 close to the cup body 1 is fixedly connected with a sealing film 13; the space between the sealing film 13 and the outer ring of the cup body 1 is a cavity; the cavity is communicated with the annular groove 12 through a second air passage 14 arranged on the side wall of the cup body 1; the limiting ring 11 limits the moving range of the sleeve ring 4, the possibility that the swinging plate 8 is difficult to return due to excessive movement is reduced, meanwhile, the sleeve ring 4 moves downwards to press the limiting ring, so that gas in the limiting ring is pressed, the gas in the annular groove 12 is pressed into the cavity, the gas in the cavity is increased to push the sealing film 13 to arch, the sealing film further contacts with the hand of an infant, the hand of the infant is fixed to a certain extent by matching with the inflatable air bag 5, and the phenomenon that a large amount of dust and other impurities are adhered due to falling of a plastic cup caused by unstable holding is reduced.

As one embodiment, a position corresponding to the upper end of the cup body 1 is fixedly connected with a limit plate 15; the limiting plate 15 is arranged in a hook shape, and the limiting plate 15 is made of an elastic material; according to the invention, the limit plate 15 is arranged, so that the swinging plate 8 can be gradually contacted with the hook-shaped limit plate 15 when moving downwards, and is difficult to move continuously when moving downwards, so that the swinging plate 8 is limited on one hand, the possibility that the swinging plate 8 is difficult to return due to excessive movement is reduced, and on the other hand, the hook-shaped limit plate 15 can be quickly moved when the end part of the swinging plate 8 is contacted, the moving friction is reduced, and the speed of exposing the flange 3 is increased.

As one embodiment, a groove 16 corresponding to a finger is arranged outside the inflatable air bag 5; elastic protrusions 17 are arranged on two sides of the groove 16; the groove 16 arranged on the outer side of the inflatable air bag 5 is just arranged corresponding to fingers, so that the finger can be conveniently grasped on one hand; on the other hand can cooperate the elastic bulge 17 that both sides set up to lock the finger slightly, increases the travelling comfort of finger, and the gasbag 5 of inflating of department of holding simultaneously is changeed and is out of shape for inside the gas faster flows into folding gasbag 7 in the gasbag 5 of inflating, open flange 3 rapidly, make flange 3 expose, when sealing up flange 3, do not influence the use of plastics cup.

As one embodiment, at least two first magnets 18 are circumferentially arranged inside the lantern ring 4; soft magnets 19 are arranged at corresponding positions on the side wall of the cup body 1; the soft magnet 19 is magnetically attracted with the first magnet 18; the folding air bag 7 is internally provided with liquid, the outer side of the folding air bag 7 is provided with a jet orifice, and a pressure valve is arranged in the jet orifice; when the plastic cup is used, the interior of the folding air bag 7 is inflated so as to push the lantern ring 4 to fall, and the pushing force is larger than the suction force between the first magnet 18 and the soft magnet 19; when the plastic cup is used and the lantern ring 4 returns to the upper end, the soft magnet 19 in the flange 3 and the first magnet 18 are attracted by magnetic force at the moment, so that sudden pressure is applied to the folding air bag 7, the pressure is greater than a standard value set by the pressure valve, the pressure valve is opened at the moment, liquid in the folded air bag is sprayed out in a mist shape, the flange 3 after use is disinfected and cleaned, the cleanness of the flange 3 is improved, and a certain protection is provided for the healthy growth of children.

When the infant drinking cup is in work, along with the development of economy and the progress of society, the infant education is gradually paid attention to the society, wherein the phenomenon is particularly obvious that the infant is fed into a kindergarten and is read to be in a normal state, the body of the infant grows insufficiently and completely, so the infant is extremely easy to be invaded by virus and bacteria, particularly, if the sanitary control of the plastic cup is not enhanced, the hidden danger is buried in the healthy growth of the infant; according to the invention, the flange 3 at the upper end of the cup body 1 is sealed by arranging the lantern ring 4 with the L-shaped section, specifically, the inflatable air bag 5 is arranged on the inner side of the handle 2, when an infant extends a hand into the handle 2 to tightly hold the handle 2, the inflatable air bag 5 is extruded at the moment, so that the gas in the foldable air bag 7 sequentially enters the foldable air bag 7 through the air hole and the first air passage 6, the foldable air bag 7 is rapidly expanded after being inflated, the lantern ring 4 connected below is pushed to move downwards, the lantern ring 4 moves downwards to expose the flange 3 of the cup body 1, and the infant can drink water by contacting the mouth with the flange 3; if the drinking is finished, the handles 2 at the two sides are squeezed, and at the moment, the gas in the folding air bag 7 returns to the inflating air bag 5, so that the lantern ring 4 returns to the upper end to seal the flange 3; this technical scheme is through the infant grip handle 2 extrusion air bag 5 of aerifing for in gaseous letting in folding gasbag 7, folding gasbag 7 and lantern ring 4 cooperation are slided from top to bottom, have realized sealed flange 3 when not drinking water, make lantern ring 4 move down again when needing, thereby open flange 3, reduce the possibility of flange 3 adhesion dust, provide certain safety protection to infant's healthy growth.

The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. A plastic cup, comprising a cup body (1); the method is characterized in that: handles (2) are symmetrically arranged on two sides of the cup body (1), an opening is formed in the upper end of the cup body (1), and a flange (3) is arranged on the outer side of the upper end of the cup body (1); a lantern ring (4) is arranged below the opening; the section of the lantern ring (4) is L-shaped, and the lantern ring (4) can slide up and down along the outer ring of the cup body (1); the inner side of the handle (2) is provided with an inflatable air bag (5), the handle (2) is arranged in a hollow manner, and an air hole is formed in the handle (2) and communicated with the inside of the inflatable air bag (5); the inflatable air bag (5) is communicated with the folding air bag (7) through a first air passage (6) arranged on the cup body (1); the other end of the folding air bag (7) is connected with the inner wall of the lantern ring (4); by arranging the inflatable airbag (5) on the inner side of the handle (2), when an infant stretches a hand into the handle (2) to tightly hold the handle (2), the inflatable airbag (5) is extruded at the moment, so that the gas inside the infant enters the folding airbag (7) through the air hole and the first air passage (6) in sequence, the folding airbag (7) is rapidly expanded after being inflated, the lantern ring (4) connected below is pushed to move downwards, the lantern ring (4) moves downwards to expose the flange (3) of the cup body (1), and the infant can drink water by contacting the mouth with the flange (3); if the drinking is finished, the squeezing of the handles (2) at the two sides is only needed to be released, and at the moment, the gas in the folding air bag (7) returns to the inflating air bag (5), so that the lantern ring (4) returns to the upper end again to seal the flange (3);

at least two swinging plates (8) are hinged above the lantern ring (4); the adjacent swing plates (8) are connected through elastic sealing bags (9); an extrusion air bag is arranged below the end part of the swinging plate (8); the extrusion air bag is used for assisting the swinging plate (8) to seal the upper end of the cup body (1); through articulating swing board (8) above lantern ring (4), when not needing to drink water, swing board (8) can drive continuous elastic sealing bag (9) and seal flange (3) upper end, simultaneously swing board (8) below extrusion gasbag can increase with the area of contact of flange (3), thereby fill in the space between flange (3) and lantern ring (4) by force, carry out all-round sealed to flange (3), further improved the leakproofness between swing board (8) and lantern ring (4), further reduce the possibility of flange adhesion dust, provide safety protection to infant's healthy growth; when the lantern ring (4) moves downwards under the pushing of the folding air bag (7), the connected swinging plate (8) is driven to move downwards, so that the swinging plate (8) swings along a hinge point, and the flange (3) is exposed;

a limiting ring (11) is bonded in the middle of the cup body (1); the limiting ring (11) is elastically arranged, and an annular groove (12) is arranged in the limiting ring (11); one side of the handle (2) close to the cup body (1) is fixedly connected with a sealing film (13); the space between the sealing film (13) and the outer ring of the cup body (1) is a cavity; the cavity is communicated with the annular groove (12) through a second air passage (14) arranged on the side wall of the cup body (1); the moving range of the lantern ring (4) is limited through the limiting ring (11), the possibility that the swinging plate (8) is difficult to return due to excessive movement is reduced, meanwhile, the lantern ring (4) moves downwards to extrude the limiting ring, so that gas in the limiting ring is pressed, the gas in the annular groove (12) is pressed into the cavity, the gas in the cavity is increased to push the sealing film (13) to arch, the sealing film further contacts with the hand of an infant, the hand of the infant is fixed by matching with the inflatable air bag (5), the phenomenon that the plastic cup falls due to unstable holding and a large amount of dust and sundries are adhered is reduced;

at least two first magnets (18) are circumferentially arranged in the lantern ring (4); soft magnets (19) are arranged at corresponding positions on the side wall of the cup body (1); the soft magnet (19) is magnetically attracted with the first magnet (18); the folding air bag (7) is internally provided with liquid, the outer side of the folding air bag (7) is provided with a jet orifice, and a pressure valve is arranged in the jet orifice; when the plastic cup is used, the interior of the folding air bag (7) is inflated so as to push the lantern ring (4) to fall, and the pushing force is greater than the suction force between the first magnet (18) and the soft magnet (19); when the plastic cup is used and the lantern ring (4) returns to the upper end, the soft magnet (19) in the flange (3) is attracted with the first magnet (18) by magnetic force, so that the folding air bag (7) is suddenly pressurized, the pressure is greater than a standard value set by the pressure valve, the pressure valve is opened, the liquid in the folding air bag is sprayed out in a mist shape, the flange (3) after use is disinfected and cleaned, the cleanness of the flange (3) is improved, and the protection is provided for the healthy growth of infants;

a limiting plate (15) is fixedly connected to the corresponding position of the upper end of the cup body (1); the limiting plate (15) is arranged in a hook shape, and the limiting plate (15) is made of elastic materials;

a groove (16) corresponding to a finger is arranged on the outer side of the inflatable air bag (5); elastic bulges (17) are arranged on both sides of the groove (16).