CN218338014U - Waist and back supporting device - Google Patents

Abstract

The utility model relates to a thing to sit on back supports technical field, especially relates to a back strutting arrangement. This back strutting arrangement includes overcoat, inner core and air bag, and the overcoat has the chamber of holding, and inner core and air bag all set up and hold the intracavity. The air bag can correspondingly expand and contract through inflation and deflation, and the outer sleeve and the inner core correspondingly deform, so that the outline of the outer curved surface of the outer sleeve and the outer curved surface of the inner core change. This back of the waist strutting arrangement can change back of the waist strutting arrangement's shape and supporting effect through filling the gassing, makes this back of the waist strutting arrangement can match different use crowds to this back of the waist strutting arrangement simple structure, convenient to carry.

Description

Waist and back supporting device

Technical Field

The utility model relates to a thing to sit on back supports technical field, especially relates to a back strutting arrangement.

Background

Common in the life like take seat such as back office chair or car seat, its back mainly used provides holistic support, generally is difficult to realize more laminating or adaptation support to human back, and long-time sitting can cause the back to appear ache, also can aggravate the emergence of lumbar vertebra disease simultaneously.

Currently, one way to do this is to use a throw pillow or similar device placed behind the back of the back to improve the holding power and thus the fit, such devices being simple in construction and having low manufacturing costs and sales. But is suitable for short-time use, and has the problem of collapse or insufficient supporting force after long-term use, so that the supporting effect of the spinal column and the peripheral area of the waist and the back is relatively poor. When the backrest device is placed on seats such as office chairs and automobile seats, the backrest device is easy to incline and easy to cause soreness of the waist of a human body due to the radian problem of the seats, so that the backrest device cannot be matched with the requirements of most office chairs and automobile seats. The other mode is that a backrest device installed on a backrest of a seat (an office seat, a car seat and the like) is adopted, the backrest device comprises two supporting plates (parts attached to the back of a seated person) which are arranged at left and right intervals, a buffer part is arranged on the rear side of each supporting plate, buffer force is provided for the supporting plates, and the buffer parts are installed on a back plate. The person of taking when using, the back leans on at the backup pad, and the bolster shrink, and the backup pad removes to the backplate direction, and this type of device that backs up's support nature and laminating nature are better, but the structure is complicated relatively, the cost is higher relatively and carry the inconvenience.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

The utility model aims at providing a simple structure, convenient to carry, and can adapt to the back of the seat of different radians and the back strutting arrangement of different use crowds.

(II) technical scheme

In order to achieve the above object, in a first aspect, the present invention provides a lumbar support device, comprising an outer cover, an inner core and an air bag, wherein the outer cover has an accommodating cavity, and the inner core and the air bag are both arranged in the accommodating cavity;

the gas amount in the air bag is increased, and the air bag is expanded and deformed;

the gas amount in the air bag is reduced, and the air bag contracts and deforms;

the shapes of the outer sleeve and the inner core are changed along with the expansion deformation or the contraction deformation of the air bag.

Optionally, the airbag is connected with an inflation/deflation part, the inflation/deflation part comprises an inflation tube, an inflation ball and a deflation structure, one end of the inflation tube is connected with the airbag, the other end of the inflation tube extends out of the outer side of the coat and is communicated with the inflation ball, and the deflation structure is arranged at the connecting end of the inflation ball and the inflation tube or on the inflation tube positioned on the outer side of the coat.

Optionally, an inflatable inner bag is arranged in the air bag, the inflatable inner bag is communicated with the inflation tube, the inflatable inner bag is expanded by squeezing the inflatable ball to support the air bag, gas in the inflatable inner bag is released by operating the deflation structure, the inflatable inner bag contracts, and the air bag contracts along with the inflation.

Preferably, the air release structure is a one-way air release valve.

Optionally, be provided with limit stop on the gas tube, limit stop is located and holds the intracavity and can support at the wall body inboard of overcoat, and the restriction gas tube stretches out the length in the overcoat outside.

Optionally, the airbag is fixed on the outer sleeve by sewing; or

The inner side of the wall body of the coat is provided with a containing pocket, and the air bag is placed in the containing pocket; or

The air bag is detachably fixed on the outer sleeve through a magic tape or a snap fastener.

Optionally, one side of the airbag is in contact with one side of the inner core, the other side of the inner core facing the user.

Optionally, the side of the inner core facing the user has a curved surface matching the back of the human body.

Optionally, an adjusting block is arranged on one side of the airbag, which is far away from the inner core;

the adjusting block is pulled along the up-down direction, and the air bag can be driven to move along the up-down direction relative to the outer sleeve.

Optionally, an opening arranged in the vertical direction is formed in one side wall body, which is in contact with the airbag, of the coat, and a hand of a user can stretch into the opening to drive the airbag to move in the vertical direction relative to the coat.

Optionally, one side of the airbag facing away from the inner core is provided with a holding belt, and two ends of the holding belt are connected with the airbag.

Optionally, the inner core is memory cotton or latex; and/or

The coat is a cloth cover

Optionally, the outer sleeve is provided with a connecting strap for fixing the lumbar support device to the backrest of the piece of seating furniture.

Optionally, the connecting band is divided into two segments, each of the two segments has one end connected to the outer sleeve and the other end connected to each other or to the seat.

Optionally, one end of each of the two connecting bands is connected with each other through a binding, a hook-and-loop fastener, a buckle, a Chinese character 'ri' button or a button.

Optionally, one end of each of the two connecting bands is provided with a male buckle and a female buckle of the buckle respectively, at least one connecting band is provided with a Chinese character 'ri' buckle, and the end of the connecting band provided with the Chinese character 'ri' buckle bypasses the Chinese character 'ri' buckle for adjusting the length of the connecting band.

Optionally, the outer sleeve is provided with a placing opening communicated with the accommodating cavity for placing and taking the inner core and the air bag.

Optionally, the placing opening is connected in a sealing manner through any one of a zipper, a magic tape, a button and a bandage.

(III) advantageous effects

The above technical scheme of the utility model has following advantage: the utility model provides a back strutting arrangement, including overcoat, inner core and air bag, the overcoat has and holds the chamber, and inner core and air bag all set up and are holding the intracavity. The air bag can correspondingly expand and contract through inflation and deflation, and the outer sleeve and the inner core correspondingly deform, so that the outer curved surface contours of the outer sleeve and the inner core change. This back of the waist strutting arrangement can change back of the waist strutting arrangement's shape and supporting effect through filling the gassing, makes this back of the waist strutting arrangement can match different use crowds to this back of the waist strutting arrangement simple structure, convenient to carry.

Drawings

The drawings of the present invention are provided for illustrative purposes only, and the proportion and the number of each component in the drawings are not necessarily consistent with those of actual products.

Fig. 1 is a schematic front view of a lumbar and back support device according to a first embodiment of the present invention;

FIG. 2 is a schematic view of the internal structure of a lumbar support device after being cut (the inflation tube is not cut) according to one embodiment of the present invention;

FIG. 3 is a schematic view of the lumbar-back support device of FIG. 1 at another angle;

FIG. 4 is a schematic view of the lumbar support device shown in FIG. 3 after increasing the amount of gas;

fig. 5 is a schematic structural view of an airbag and an inflation/deflation portion thereof according to a first embodiment of the present invention;

fig. 6 is a schematic structural view of a lumbar support device according to a second embodiment of the present invention;

FIG. 7 is a schematic view of the lumbar support device shown in FIG. 6 after increasing the amount of gas;

fig. 8 is a schematic structural view of an airbag and an inflation/deflation part thereof according to a second embodiment of the present invention;

fig. 9 is a schematic structural view of another lumbar support device according to a second embodiment of the present invention;

fig. 10 is a schematic view showing the construction of one of the air bags of fig. 9 and the inflating and deflating portions thereof;

fig. 11 is a schematic structural view of a lumbar support device according to a third embodiment of the present invention.

In the figure:

1: a jacket;

11: an opening;

12: an accommodating pocket;

13: a placement port;

2: an inner core;

3: an air bag;

31: inflating the inner bag;

32: a regulating block;

33: a grip strap;

4: an inflation/deflation part;

41: an inflation tube;

42: an inflatable ball;

43: a gas release structure;

44: a limit stop block;

5: a connecting belt;

51: inserting and buckling;

52: a Chinese character ri buckle.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "upper", "lower", "left", "right", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.

In the description of the present invention, it should also be noted that, unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood as a specific case by those skilled in the art.

Example one

Referring to fig. 1 and 2, an embodiment of the present invention provides a lumbar and back support device, which includes an outer sleeve 1, an inner core 2, and an air bag 3, wherein the outer sleeve 1 has a holding cavity, and the inner core 2 and the air bag 3 are both disposed in the holding cavity. The airbag 3 can be expanded and contracted correspondingly through inflation and deflation. When the airbag 3 is inflated to deform, the airbag 3 further presses the outer cover 1 and the inner core 2, and the outer cover 1 and the inner core 2 deform accordingly, so that the outer curved profiles of the outer cover 1 and the inner core 2 change accordingly in inflation (see the state from fig. 3 to fig. 4). When the bag 3 is deformed by the released gas, the support of the outer cover 1 and the inner core 2 by the bag 3 is weakened, and the deformation of the outer cover 1 and the inner core 2 caused by the previous extrusion is recovered to a certain extent, so that the outer curved surface profile of the outer cover 1 and the inner core 2 is changed correspondingly to be contracted (see the state changed from fig. 4 to fig. 3). This back of the body strutting arrangement fills the gas change back of the body strutting arrangement's shape and supporting effect (the big support nature of air bag inflation is stronger more), makes back of the body strutting arrangement can match different use crowds to this back of the body strutting arrangement simple structure, it is the same with traditional pillow basically when carrying, it is comparatively convenient to carry. Compared with the existing backrest device (provided with the left and right support plates arranged at intervals), the backrest device has the advantages that the cost is reduced, the portability is greatly improved, and the backrest device can be used as a substitute of the traditional backrest device to a certain degree in terms of functionality.

Fig. 1 is a front view of the lumbar-back support device, and the broken line shows the structure of the airbag 3 and the inflation tube 41 inside the cover 1. Fig. 2 is a cross-sectional view of the lumbar-back support device in order to show the structural relationship between the inner core 2 and the air bag 3 and the outer cover 1.

In some preferred embodiments, the airbag 3 is located at a middle position in the vertical direction of the accommodating chamber, and the deformation degree decreases from the position of the airbag 3 to the periphery when the airbag is expanded and deformed.

Although in some embodiments, the air bag 3 can be inflated and deflated after being taken out, or can be inflated by a separate inflator after a hole is reserved in the coat 1, and a deflation port (sealed by an openable sealing cover) or a one-way deflation valve is arranged on the air bag 3 for deflation, the adjustment is relatively inconvenient.

In a preferred embodiment, the airbag 3 is connected with an inflation/deflation portion 4, the inflation/deflation portion 4 comprises an inflation tube 41, an inflation ball 42 and a deflation structure 43, one end of the inflation tube 41 is connected with the airbag 3, and the other end extends out of the coat 1 and is communicated with the inflation ball 42. Generally, the inflation tube 41 is provided to pass through a through hole or a slit on the outer sleeve 1, which is not limited in particular. The deflate structure 43 is provided on the inflatable ball 42 or the inflatable tube 41. The airbag 3 can be inflated by squeezing the inflatable ball 42, so that the airbag 3 is expanded and deformed. The gas of the airbag 3 can be discharged through the gas discharge structure 43, so that the airbag 3 undergoes contraction deformation. The venting structure 43 may be a releasable cover structure that releases the air when the cover is released. The one-way air release valve can be pressed or rotated to realize air release (the pressing air release or the rotating air release is selected according to the structure of the one-way air release valve). More preferably, the deflating structure 43 is a one-way deflating valve and is arranged on the inflating tube 41 located outside the suit 1.

In order to ensure both the strength of the airbag 3 and the supporting effect of the gas on the airbag 3, in some preferred embodiments, as shown in fig. 5, an inflatable inner bag 31 is provided in the airbag 3, the inflatable inner bag 31 is communicated with an inflation tube 41, the inflatable inner bag 31 is expanded by pressing an inflatable ball 42, the airbag 3 is supported, the gas in the inflatable inner bag 31 is discharged through a discharge structure 43, the inflatable inner bag 31 is contracted, and the airbag 3 is contracted. With the structure, the strength of the mechanism can be considered emphatically by the airbag 3, the inflatable inner bag 31 can adopt a soft material as the inner bag, the shape change response is sensitive during inflation, and the airbag can be better filled with gas and has no folds and can provide more uniform support for the airbag 3. In one embodiment, the airbag 3 and the inflatable inner bag 31 may be made of TPU (thermoplastic polyurethane elastomer) materials, respectively.

In order to keep the outer portion of the lumbar support device clean, in some preferred embodiments, as shown in fig. 5, a limit stop 44 is provided on the inflation tube 41, and the limit stop 44 is located in the receiving cavity and can abut against the inner side of the wall body of the jacket 1 to limit the length of the inflation tube 41 extending outside the jacket 1. The limit stop 44 may be a protruding block integrated with the inflation tube 41, or may be a ring block capable of sliding along the inflation tube 41, and the maximum length of the inflation tube 41 extending outside the jacket 1 can be adjusted by adjusting the position of the ring block.

To further improve comfort, one side of the airbag 3 is in contact with one side of the core 2, and the other side of the core 2 faces the user. That is, the airbag 3 transmits the supporting force to the user through the inner core 2, the shape change is smoother, and the use experience is better. Of course, the user can select the use surface according to the requirement, and the use surface is not limited herein. More preferably, the side of the inner core 2 facing the user has a curved surface matching with the waist and back of the human body, for example, a concave curved surface for wrapping experience, so that the inner core can better fit with the waist and back of the human body in use.

In some preferred embodiments, the inner core 2 is made of soft elastic material such as memory cotton or latex, and the shape of the inner core is matched with the accommodating cavity of the outer sleeve 1, and the inner core is completely filled in the outer sleeve 1. Preferably, the outer sleeve 1 is a cloth sleeve.

In some embodiments with the inflation/deflation part 4, the outer cover 1 may not be provided with a special placing opening, for example, the inner core 2 and the air bag 3 are wrapped on the outer cover 1 and then the outer cover 1 is directly sewed and closed. Of course, it is relatively inconvenient to replace the inner core 2 and the air bladder 3 in this embodiment.

In order to facilitate the removal of the inner core 2 and the air bag 3, in a preferred embodiment, referring to fig. 2, a placing opening 13 communicating with the accommodating cavity is provided on the outer sleeve 1 for removing the inner core 2 and the air bag 3. In some embodiments, the placement port 13 may be an open port structure. A zipper (see fig. 2), a hook and loop fastener, a button, or a strap may be provided at the placing port 13 to close or open the placing port 13 when necessary. Preferably, the placing opening 13 is provided at the lower side of the casing 1. Compared with the embodiment of the coat 1 without a placing opening, the embodiment has the advantages that the assembly and the replacement of the inner core 2 and the air bag 3 are more convenient. The outer sleeve 1 is also easy to clean.

In order to better fix the position of the lumbar support device relative to the backrest of the piece of seating furniture, in some preferred embodiments, as shown in fig. 2-4, a connecting strap 5 is provided on the casing 1 for fixing the lumbar support device to the backrest of the piece of seating furniture.

In one embodiment, the two ends of the connecting band 5 are respectively connected with the outer sleeve 1, and a ring structure is formed between the connecting band and the outer sleeve 1 and is directly sleeved on the backrest of the seat. Preferably, the connecting band 5 is made of elastic material, such as elastic band.

In another embodiment, the connecting band 5 has a two-piece structure, and each of the two pieces of connecting band 5 has one end connected to the outer sleeve 1 and the other end connected to the outer sleeve 1 to form a ring structure.

For the above-mentioned two sections of connecting bands 5, preferably, the two sections of connecting bands 5 are connected at one end by binding, hook and loop fastener, insert buckle 51, and buckle 52 or button. More preferably, as shown in fig. 2 to 4, the two connecting bands 5 are connected at their ends by a plug 51, which facilitates the detachment and connection. In another preferred embodiment, the two connecting bands 5 are connected at one end by a Chinese character 'ri' button 52, so that the length adjustment is convenient. Of course, in other embodiments, the two connecting bands 5 are directly connected to the backrest of the seat by binding or the like.

In another embodiment, as shown in fig. 2-4, the two connecting bands 5 are matched with each other through the insertion buckle 51 and the buckle 52, so that not only the connection of the two connecting bands 5 can be conveniently realized, but also the length adjustment can be conveniently carried out. Specifically, one end of each of the two connecting bands 5 is connected to the male buckle and the female buckle of the insert buckle 51, and the male buckle and the female buckle are matched to conveniently connect the two connecting bands 5, so that the two connecting bands are convenient to detach. In the present embodiment, the connection band 5 with the buckle 52 is wound around the male buckle and then wound around the buckle 52, and the length adjustment of the connection band 5 is realized through the buckle 52, so as to realize the length adjustment of the whole connection band 5.

It should be noted that the insert buckle 51 and the buckle 52 are both common structures of the existing backpack strap, and are not described herein again.

Example two

Referring to fig. 6 to 8, the second embodiment is basically the same as the first embodiment, and the same parts are not repeated herein, except: the airbag 3 and the coat 1 have a height adjusting structure, and in one embodiment, an adjusting block 32 is arranged on one side of the airbag 3, which is far away from the inner core 2. Be equipped with on overcoat 1 and be the opening 11 that the direction was arranged from top to bottom, the regulating block 32 stretches out the outside of overcoat 1 through opening 11, follows the upper and lower direction and stimulates regulating block 32, can drive the relative overcoat 1 of gasbag 3 and move along the upper and lower direction to adjust the support height of gasbag 3. After the adjustment is in place, the airbag 3 is clamped at the position after the adjustment by the inner core 2 and the outer sleeve 1, so that the limit is realized. In a specific embodiment, the opening 11 is a reserved slot formed in the jacket 1, and the adjusting block 32 extends out of the jacket 1 through the opening 11 and can move up and down along the opening 11. Fig. 7 is a view showing a variation of the air bladder 3 of fig. 6 after being filled with more air.

In still another embodiment, referring to fig. 9 and 10, an opening 11 is formed in a side wall of the outer cover 1 contacting the airbag 3 in a vertical direction, and a hand of a user can extend into the opening 11 to push the airbag 3 to move in the vertical direction relative to the outer cover 1.

In order to facilitate the holding and pushing of the airbag 3, in a preferred embodiment, a holding band 33 is disposed on a side of the airbag 3 away from the inner core 2, two ends of the holding band 33 are connected to the airbag 3, a hand of a user can extend between the airbag 3 and the holding band 33, and the holding band 33 is held to drive the airbag 3 to move.

In some embodiments, opening 11 also serves as an access port for removing core 2 and air bladder. In this embodiment, the outer casing may not be provided with a separate inlet and outlet.

EXAMPLE III

The third embodiment is basically the same as the first embodiment, and the same parts are not described again, except for: the air bag 3 and the coat 1 are fixedly connected. In general, it is preferable that the airbag 3 be located in the middle region in the left-right direction and in the middle region or near the lumbar support device in the up-down direction. This location arrangement can be sufficient for relatively many group uses. There are of course some products that are specifically required, for example, the airbag 3 may be fixed by selecting any position where it can be fixed.

In one embodiment, the bag 3 is secured to the cover 1 by stitching, for example, a circle around the perimeter, or by providing an extension piece around the perimeter of the bag 3 and stitching the extension piece to the cover 1.

In still another embodiment, referring to fig. 11, the inner side of the wall of the coat 1 is provided with a receiving pocket 12, and the airbag 3 is placed in the receiving pocket 12 to realize the connection and fixation with the coat 1.

In another embodiment, the airbag 3 is detachably fixed on the outer cover by means of a hook and loop fastener. The magic tape and the snap button are both of the existing structure and are not described in detail herein.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art will understand that: each embodiment does not include only one independent technical solution, and in the case of no conflict between the solutions, the technical features mentioned in the respective embodiments may be combined in any manner to form other embodiments as will be understood by those skilled in the art.

Furthermore, the technical solutions described in the foregoing embodiments may be modified or some of the technical features may be equivalently replaced without departing from the scope of the present invention, and the essence of the corresponding technical solutions does not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims (18)

1. A waist back strutting arrangement which characterized in that:

the inflatable air bag comprises a coat, an inner core and an air bag, wherein the coat is provided with an accommodating cavity, and the inner core and the air bag are arranged in the accommodating cavity;

the gas amount in the airbag bag is increased, and the airbag bag is expanded and deformed;

the gas amount in the airbag bag is reduced, and the airbag bag is contracted and deformed;

the shapes of the outer cover and the inner core are changed along with the expansion deformation or the contraction deformation of the airbag.

2. The lumbar back support device of claim 1, wherein:

the air-bag is connected with and fills gassing portion, it includes gas tube, inflatable ball and gassing structure to fill gassing portion, the one end of gas tube with the air-bag is connected, and the other end stretches out extremely the outside of overcoat, and with the inflatable ball intercommunication, the gassing structure sets up inflatable ball with the link of gas tube or being located the overcoat outside on the gas tube.

3. The lumbar support device of claim 2, wherein:

be equipped with in the air bag and aerify the inner bag, aerify the inner bag with the gas tube intercommunication through the extrusion the inflatable ball makes aerify the inner bag inflation, prop up the air bag emits through operation gassing structure aerify the interior gas of bag, aerify the inner bag shrink, the air bag is along with the shrink.

4. The lumbar-back support device according to claim 2 or 3, wherein:

the air release structure is a one-way air release valve.

5. The lumbar back support device of claim 2, wherein:

be provided with limit stop on the gas tube, limit stop is located hold the intracavity and can support the wall body inboard of overcoat, the restriction the gas tube stretches out the length in the overcoat outside.

6. The lumbar support device of claim 1, wherein:

the air bag is fixed on the outer sleeve through sewing; or alternatively

The inner side of the wall body of the coat is provided with an accommodating pocket, and the air bag is placed in the accommodating pocket; or

The air bag is detachably fixed on the outer sleeve through a magic tape or a snap fastener.

7. The lumbar support device of claim 1, wherein:

one side of the airbag is in contact with one side of the inner core, and the other side of the inner core faces a user.

8. The lumbar back support device of claim 7, wherein:

one side of the inner core facing the user is provided with a curved surface matched with the waist and the back of the human body.

9. The lumbar support device of claim 1, wherein:

an adjusting block is arranged on one side of the air bag, which is far away from the inner core;

be equipped with the opening that is upper and lower direction and arrange on the overcoat, the regulating block passes through the opening stretches out the outside of overcoat is followed upper and lower direction pulling the regulating block can drive the air bag is relative the overcoat is followed upper and lower direction and is removed.

10. The lumbar back support device of claim 1, wherein:

the overcoat with be equipped with the opening that the orientation was arranged from top to bottom on the lateral wall body of gasbag contact, user's hand can stretch into the opening drives the gasbag is relative the overcoat removes along upper and lower direction.

11. The lumbar back support device of claim 10, wherein:

the air bag deviates from one side of the inner core is provided with a holding belt, and two ends of the holding belt are connected with the air bag.

12. The lumbar support device of claim 1, wherein:

the inner core is memory cotton or latex; and/or

The outer sleeve is a cloth sleeve.

13. The lumbar back support device of claim 1, wherein:

the outer sleeve is provided with a connecting belt used for fixing the waist and back supporting device on the backrest of the seat.

14. The lumbar support device of claim 13, wherein:

the connecting band divide into two sections, two sections the connecting band all respectively have one end with the overcoat is connected, other end interconnect or connect in on the thing to sit on.

15. The lumbar support device of claim 14, wherein:

one end of each of the two sections of connecting bands is connected through binding, magic tape, eye-splice, chinese character buckle or button.

16. The lumbar support device of claim 14, wherein:

two sections connecting band interconnect's one end is equipped with the pin thread and the box of eye-splice respectively, at least one of them section be equipped with the japanese letter on the connecting band and detain, be equipped with the tip of the connecting band that the japanese letter was detained is walked around the japanese letter is detained, is used for adjusting the length of connecting band.

17. The lumbar back support device of claim 1, wherein: the outer sleeve is provided with a placing opening communicated with the accommodating cavity and used for placing and taking the inner core and the air bag.

18. The lumbar support device of claim 17, wherein: the placing opening is connected in a sealing mode through any one of a zipper, a magic tape, a button and a bandage.

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